With Different Alignments On Opposite Substrates Patents (Class 349/128)
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Patent number: 7999909Abstract: An in-plane switching mode liquid crystal display device includes a first substrate including a pixel electrode in a pixel region, a second substrate facing the first substrate and including a common electrode, a first alignment layer on the pixel electrode, a second alignment layer on the common electrode, a first ferroelectric liquid crystal layer on the first alignment layer and including a first spontaneous polarization, a second ferroelectric liquid crystal layer on the second alignment layer and including a second spontaneous polarization, a rotational direction of the first ferroelectric liquid crystal layer with respect to the first alignment layer being different from a rotational direction of the second ferroelectric liquid crystal layer with respect to the second alignment layer, and a twisted nematic liquid crystal layer between the first and second ferroelectric liquid crystal layers.Type: GrantFiled: July 22, 2010Date of Patent: August 16, 2011Assignee: LG Display Co., Ltd.Inventor: Su-Seok Choi
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Publication number: 20110149209Abstract: A liquid crystal display device comprising, a first substrate, a second substrate, a liquid crystal layer provided between the substrates, a first alignment film provided on the liquid crystal layer side surface of the first substrate, and a second alignment film provided on the liquid crystal layer side surface of the second substrate, wherein the liquid crystal layer includes liquid crystal molecules with negative dielectric anisotropy, the first alignment film and the second alignment film align the liquid crystal molecules substantially vertically to the alignment film surfaces and align the liquid crystal molecules near the first alignment film and the second alignment film such that alignment directions of the liquid crystal molecules near the first and second alignment films are perpendicular to each other, and the first alignment film and the second alignment film are photo-alignment films made of a material having a photosensitive group.Type: ApplicationFiled: March 2, 2011Publication date: June 23, 2011Applicant: Sharp Kabushiki KaishaInventor: Koichi MIYACHI
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Publication number: 20110128474Abstract: A reflective liquid crystal panel including a first substrate, a first alignment layer, a second substrate, a second alignment layer, a liquid crystal layer and a reflection layer is provided. The first alignment layer disposed on the first substrate has a first alignment direction. The second substrate is opposite to first substrate. The second alignment disposed on the second substrate has a second alignment direction, wherein an included angle between the first alignment direction and the second alignment direction is substantially between 68 degrees and 85 degrees. The liquid crystal layer is disposed between the first substrate and the second substrate. The first alignment layer and the second alignment layer align the liquid crystal so that the liquid crystal layer has a twisted angle, wherein the twisted angle and the included angle are substantially the same. The reflection layer is disposed between the second alignment layer and the second substrate.Type: ApplicationFiled: July 1, 2010Publication date: June 2, 2011Applicant: HIMAX DISPLAY, INC.Inventors: Yuet Wing Li, Kuan-Hsu Fan-Chiang
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Patent number: 7944528Abstract: In an LCD apparatus, a non-effective display region disposed between pixel electrodes and a light leakage region disposed on the pixel electrodes are covered by means of a light-leakage preventing layer and by overlapping color filters of a color filter substrate, thereby preventing the light from being leaked through the non-effective display region and the light leakage region. Accordingly, it is possible to prevent brightness of the light from being decreased and images displayed through the LCD apparatus from being deteriorated in quality.Type: GrantFiled: January 15, 2008Date of Patent: May 17, 2011Assignee: Samsung Electronics Co., Ltd.Inventor: Young-Kyu Jang
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Patent number: 7944529Abstract: A transflective liquid crystal display device with improved display quality in which the liquid initial alignment direction of the liquid crystal layer is in a direction perpendicular to the extending direction of a clearance between the counter electrode of a transmission portion and a counter electrode of a reflection portion or in a direction within a range of ±2° in the clockwise direction perpendicular to the extending direction of the clearance in a case where the liquid crystal layer comprises positive type liquid crystals, or the liquid crystal initial alignment direction of the liquid crystal layer is in a direction parallel with the extending direction of a clearance, or a direction within a range of ±2° in the clockwise direction relative to the extending direction of the clearance in a case where the liquid crystal layer comprises negative type liquid crystals.Type: GrantFiled: October 7, 2010Date of Patent: May 17, 2011Assignee: Hitachi Displays, Ltd.Inventors: Takahiro Ochiai, Toshio Miyazawa, Masahiro Maki, Tohru Sasaki, Masateru Morimoto
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Patent number: 7936436Abstract: The present invention lowers leaking of light at the time of performing a black display of VA-type liquid crystal display device and, at the same time, prevents lowering of a numerical aperture. In a liquid crystal display device having a liquid crystal display panel which sandwiches a liquid crystal material between a first substrate having a pixel electrode and a second substrate having a counter electrode, the second substrate includes an orientation control projection which is formed by forming a conductive film on the second substrate, by forming an insulation film on the conductive film and, thereafter, by patterning the insulation film, and a light shielding layer which is formed by patterning the conductive film using the orientation control projection as a mask.Type: GrantFiled: November 4, 2009Date of Patent: May 3, 2011Assignee: Hitachi Displays, Ltd.Inventors: Takahiro Ochiai, Tohru Sasaki
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Patent number: 7924381Abstract: A method for producing a liquid crystal display device including a first irradiation step for realizing alignment of liquid crystals in a first azimuth direction on a first alignment layer by obliquely irradiating the first substrate, a second irradiation step for realizing alignment of liquid crystals in a second azimuth direction by obliquely irradiating a region of the first substrate where irradiation has not been conducted in the first irradiation step with rays in an azimuth direction that is 180 degrees different from an azimuth direction of irradiation in the first irradiation step, a third irradiation step for realizing alignment of liquid crystals in a third azimuth direction on a second alignment layer by obliquely irradiating the second substrate, and a sticking step of sticking together the first and second substrates such that the first azimuth direction and the third azimuth direction are perpendicular to each other.Type: GrantFiled: August 21, 2008Date of Patent: April 12, 2011Assignee: Sharp Kabushiki KaishaInventors: Hidefumi Yoshida, Tsutomu Seino, Yasutoshi Tasaka
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Patent number: 7916256Abstract: A liquid crystal display device including a pair of substrates, a first alignment layer formed on one substrate and a second alignment layer formed on the other substrate, and a plurality of pixels, each having four different alignment regions. The first alignment layer is treated to define two different pretilt directions for the liquid crystal molecules within the four alignment regions, wherein the two different pretilt directions are opposite each other and both extend in a generally parallel direction to a first boundary defined between two regions in which the two different pretilt directions are defined, and said second alignment layer defines another two different pretilt directions within the four alignment regions, wherein the two different pretilt directions are opposite each other and both extend in a generally parallel direction to a second boundary defined between two regions in which the another two different pretilt directions are defined.Type: GrantFiled: August 21, 2008Date of Patent: March 29, 2011Assignee: Sharp Kabushiki KaishaInventors: Hidefumi Yoshida, Tsutomu Seino, Yasutoshi Tasaka
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Publication number: 20110063554Abstract: A liquid crystal display device including a pair of substrates in a spaced relationship with one another. A pair of alignment films are provided, one alignment film being formed on each substrate such that the alignment films face one another. A liquid crystal layer, including plural liquid crystals, is inserted between the pair of alignment films, wherein the alignment films impart a given pre-tilt angle to the liquid crystals. The alignment films are composed of a material containing at least two types of polymers having a prescribed initial alignment and different alignment variation rates in response to ultraviolet ray irradiation. The pre-tilt angle being adjusted, without rubbing the alignment films, through ultraviolet exposure of the alignment films.Type: ApplicationFiled: November 18, 2010Publication date: March 17, 2011Applicant: SHARP KABUSHIKI KAISHAInventors: Hidefumi Yoshida, Yasutoshi Tasaka, Takashi Sasabayashi, Yohei Nakanishi, Kenji Okamoto
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Patent number: 7884906Abstract: It is an object of the present invention to provide a substrate for liquid crystal display by means of which a generation of air bubbles in a liquid crystal layer after charging a liquid crystal can be prevented, and a liquid crystal display having a good display quality level can be obtained at a high yield, and to provide a liquid crystal display unit provided with such substrate for liquid crystal display. The present invention is directed to a substrate for liquid crystal display, comprising a projection for controlling alignments of liquid crystal molecules, wherein a slit is provided in the projection for controlling alignments of liquid crystal molecules.Type: GrantFiled: May 26, 2005Date of Patent: February 8, 2011Assignee: Sharp Kabushiki KaishaInventors: Masayuki Tsuji, Toshihide Tsubata, Yuhko Hisada
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Publication number: 20110025967Abstract: In a method of forming a liquid crystal display device, a black matrix is disposed on a substrate including a switching element formed thereon, a color filter is disposed on the switching element, a pixel electrode is electrically connected to the switching element, and a first alignment layer is disposed on the pixel electrode, to form a first substrate. A second substrate including a second alignment layer is formed. At least one of the first alignment layer and the second alignment layer includes a reactive mesogen. A liquid crystal layer is interposed between the first substrate and the second substrate. A light is irradiated onto the second substrate to provide pretilt angles of liquid crystal molecules of the liquid crystal layer.Type: ApplicationFiled: April 21, 2010Publication date: February 3, 2011Applicant: SAMSUNG ELECTRONICS CO., LTDInventors: Ji-Won SOHN, Joo-Seok YEOM, Jeong-Uk HEO, Ho-Yun BYUN, Jung-Hun LEE, Na-Young SHIN
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Patent number: 7872717Abstract: A liquid crystal display device having vertical alignment films formed on pixel electrodes of a thin film transistor substrate and a common electrode of a common electrode substrate, and horizontal alignment films formed in a shape of plural belts on the vertical alignment films. The horizontal alignment film of the thin film transistor substrate and the horizontal alignment film of the common electrode substrate are substantially perpendicular to each other. Accordingly, a liquid crystal layer interposed between the two substrates includes a splay area, a homeotropic area, and hybrid area, wherein the hybrid area is disposed around the splay area and the homeotropic area. Since the hybrid area serves as an alignment transition seed, the liquid crystal molecules of the splay area can be easily changed to have a band alignment. Therefore, it is possible to decrease an alignment transition voltage and to enhance an alignment transition speed.Type: GrantFiled: October 6, 2005Date of Patent: January 18, 2011Assignee: Samsung Mobile Display Co., Ltd.Inventors: Tae-Hyeog Jung, Kee-Doo Kim, Hae-Jin Heo
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Patent number: 7839472Abstract: Disclosed herein is a liquid crystal device including: first and second substrates which face each other; a liquid crystal layer interposed between the first substrate and the second substrate; a reflection display region which is provided in one region of a sub-pixel configuring a control unit of a driving display by the first and second substrates with the liquid crystal layer interposed therebetween and performs a display by reflected light; a transmission display region which is provided in the other region of the sub-pixel and performs a display transmitted light; a layer thickness adjustment film which is provided on the second substrate in correspondence with the reflection display region and defines the thickness of the liquid crystal layer to be different from that in the transmission display region; and an alignment film which is provided between the second substrate and the liquid crystal layer so as to cover the layer thickness adjustment film and is subjected to a rubbing process, wherein theType: GrantFiled: October 30, 2007Date of Patent: November 23, 2010Assignee: Sony CorporationInventor: Hiroshi Wada
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Patent number: 7834964Abstract: A transflective liquid crystal display device with improved display quality in which the liquid initial alignment direction of the liquid crystal layer is in a direction perpendicular to the extending direction of a clearance between the counter electrode of a transmission portion and a counter electrode of a reflection portion or in a direction within a range of ±2° in the clockwise direction perpendicular to the extending direction of the clearance in a case where the liquid crystal layer comprises positive type liquid crystals, or the liquid crystal initial alignment direction of the liquid crystal layer is in a direction parallel with the extending direction of a clearance, or a direction within a range of ±2° in the clockwise direction relative to the extending direction of the clearance in a case where the liquid crystal layer comprises negative type liquid crystals.Type: GrantFiled: June 29, 2007Date of Patent: November 16, 2010Assignee: Hitachi Displays, Ltd.Inventors: Takahiro Ochiai, Toshio Miyazawa, Masahiro Maki, Tohru Sasaki, Masateru Morimoto
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Publication number: 20100283953Abstract: A liquid crystal display apparatus including a pair of substrates having electrodes and vertical alignment layers. A liquid crystal having a negative anisotropy of dielectric is inserted between the substrates. Each substrate has linearly arranged alignment control structures for controlling the alignment of the liquid crystal. The alignment control structures are formed in the form of projections or slits. Each alignment control structure is formed of a plurality of constituent units. In addition, means for forming a boundary of alignment of liquid crystal (singular point in director field) to control the liquid crystal located on the alignment control structures.Type: ApplicationFiled: July 21, 2010Publication date: November 11, 2010Applicant: SHARP KABUSHIKI KAISHAInventors: Takahiro Sasaki, Arihiro Takeda, Katsufumi Ohmuro, Hideo Chida, Yoshio Koike, Kimiaki Nakamura, Kunihiro Tashiro
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Publication number: 20100283952Abstract: A VA-mode liquid crystal display device which includes a pair of alignment sustaining layers 34a and 34b formed by a photopolymerized material on surfaces of a pair of vertical alignment films 32a and 32b which are closer to a liquid crystal layer, and a cruciform opening 22a provided only in a counter electrode. When a predetermined voltage is applied across the liquid crystal layer, four liquid crystal domains are formed such that the azimuths of the directors of the respective liquid crystal domains are different from one another and form an angle of about 45? relative to the polarization axes of a pair of polarizing plates. When no voltage is applied across the liquid crystal layer, the pretilt azimuths of liquid crystal molecules included in regions respectively corresponding to the four liquid crystal domains are regulated by the alignment sustaining layers 34a and 34b.Type: ApplicationFiled: September 18, 2008Publication date: November 11, 2010Inventors: Yoshito Hashimoto, Hiroyuki Ohgami, Masumi Kubo, Masayuki Soga
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Patent number: 7830482Abstract: A method for manufacturing a transflective LCD panel having a transmissive region and a reflective region includes steps of providing an upper substrate and a lower substrate in parallel, forming a first alignment film on the upper substrate, forming a reflective layer on the reflective region of the lower substrate, forming an first insulating layer to cover the reflective layer and the lower substrate, forming a second insulating layer to cover the first insulating layer, forming positive and negative driving electrodes wrapped in the second insulating layer, forming a coplanar second alignment film to cover the second insulating layer, packaging the upper substrate and the lower substrate, and filling liquid crystal molecules.Type: GrantFiled: February 15, 2010Date of Patent: November 9, 2010Assignee: Au Optronics CorporationInventors: Tzu-Yuan Lin, Chun-Hung Chiang, Fu-Cheng Hsieh, Po-Chang Wu, Ren-Hung Huang, Jin-Jei Wu, Chih-Ming Chang, Po-Lun Chen
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Patent number: 7817234Abstract: A liquid crystal display panel comprising a first substrate, a second substrate and a liquid crystal layer is provided. The first substrate has an active device array, a pixel electrode layer and a plurality of first alignment patterns. Each first alignment pattern has at least a first shrinking area. The width of the first shrinking area is smaller than that of the other area of the first alignment pattern. The second substrate is disposed above the first substrate and has an electrode layer and a plurality of second alignment patterns. The second alignment patterns and the first alignment patterns are staggered. The liquid crystal layer is disposed between the first substrate and the second substrate. The present invention can provide better dynamic pictures.Type: GrantFiled: August 1, 2005Date of Patent: October 19, 2010Assignee: Chunghwa Picture Tubes, Ltd.Inventor: Meng-Feng Hung
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Publication number: 20100259712Abstract: A display device includes a lower polarizing plate, an array substrate, an opposite substrate, a liquid crystal layer and an upper polarizing plate. The array substrate includes a pixel electrode and a lower alignment layer. The pixel electrode has a planar-type electrode portion and a plurality of branch electrode portions extended from the planar-type electrode portion in a first direction, which is formed at about 45 degrees with respect to a first polarization axis. The lower alignment layer is formed on the pixel electrode to be aligned in the first direction. The opposite substrate includes a planar-type common electrode facing the pixel electrode and an upper alignment layer. The upper alignment layer is formed on the common electrode to be aligned in an opposite direction of the first direction.Type: ApplicationFiled: April 6, 2010Publication date: October 14, 2010Inventors: Youn-Hak Jeong, Yeon-Sik Ham, Yeon-Mun Jeon, Keun-Chan Oh, Kang-Woo Kim, Hee-Hwan Lee
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Publication number: 20100253869Abstract: A pixel array including first scan lines, second scan lines, data lines, and sub-pixels is provided. Each sub-pixel includes a first switch, a second switch, a first pixel electrode electrically connected to the first switch, a second pixel electrode electrically connected to the second switch, a third switch, and common lines connected with each other and disposed under the first and the second pixel electrode. The first and the second switch are electrically connected to the same first scan line and data line. The first scan line is located between the first and second pixel electrode. The third switch is electrically connected to the second scan line and the first pixel electrode and has a floating terminal. The floating terminal is capacitively coupled to the second pixel electrode to form a first capacitor and capacitively coupled to the common line under the second pixel electrode to form a second capacitor.Type: ApplicationFiled: July 16, 2009Publication date: October 7, 2010Applicant: Au Optronics CorporationInventors: Tien-Lun Ting, Chieh-Wei Chen, Chih-Haw Wang, Chung-Yi Chiu, Wen-Hao Hsu, Jenn-Jia Su
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Patent number: 7800724Abstract: The present invention provides a liquid crystal display (“LCD”) panel and manufacturing method thereof. The LCD panel in accordance with the present invention includes a lower substrate including a thin film transistor and a pixel electrode, an upper substrate including a common electrode facing the lower substrate, a liquid crystal layer formed between the upper and lower substrates, and an alignment layer formed of an inorganic substance containing silicon (Si), oxygen (O), and carbon (C) on the upper and lower substrates. The transmittance of light through the LCD panel is high and is practically independent of the deposition temperature of the SiOC alignment layer over a wide range of deposition temperatures. The deposition of the alignment layer can be performed over a wide range of deposition temperatures while maintaining high levels of light transmission.Type: GrantFiled: December 4, 2007Date of Patent: September 21, 2010Assignees: Samsung Electronics Co., Ltd., Pusan National UniversityInventors: Soon-Joon Rho, Jang-Sub Kim, Baek-Kyun Jeon, Hee-Keun Lee, Jae-Chang Kim, Tae-Hoon Yoon, Phil-Kook Son, Jeung-Hun Park
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Liquid crystal display panel having ion trap structure and liquid crystal display including the same
Patent number: 7800723Abstract: Disclosed is a liquid crystal display panel having an ion trap structure and a liquid crystal display including the same. The liquid crystal display panel has an opening area and a non-opening area and includes a first substrate, a second substrate that faces the first substrate, and a liquid crystal layer interposed between the first and the second substrates. The first substrate includes a plurality of unit pixels and a first alignment film having a first area and a second area. The first area of the first alignment film is disposed on the opening area, the second area is disposed on the non-opening area, and the second area is thinner than the first area.Type: GrantFiled: December 17, 2007Date of Patent: September 21, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Yun Jang, Seung Ju Lee, Seung Hee Lee, Joon Hyung Park, Myeong-Ha Kye, Kyoung Jin Lee -
Publication number: 20100231833Abstract: A liquid crystal display apparatus including a pair of substrates having electrodes and vertical alignment layers. A liquid crystal having a negative anisotropy of dielectric is inserted between the substrates. Each substrate has linearly arranged alignment control structures for controlling the alignment of the liquid crystal. The alignment control structures are formed in the form of projections or slits. Each alignment control structure is formed of a plurality of constituent units. In addition, means for forming a boundary of alignment of liquid crystal (singular point in director field) to control the liquid crystal located on the alignment control structures.Type: ApplicationFiled: May 19, 2010Publication date: September 16, 2010Applicant: SHARP KABUSHIKI KAISHAInventors: Takahiro Sasaki, Arihiro Takeda, Katsufumi Ohmuro, Hideo Chida, Yoshio Koike, Kimiaki Nakamura, Kunihiro Tashiro
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Patent number: 7791699Abstract: The present invention provides a VA mode LCD having a wide viewing angle without forming cutouts or protrusions in the common electrode. A thin film transistor drives a pixel electrode having a cutout and a direction control electrode connected to the thin film transistor overlaps the pixel electrode's cutout. A coupling electrode is connected to the direction control electrode overlapping the pixel electrode allowing the direction control electrode voltage to be maintained higher than the pixel electrode voltage.Type: GrantFiled: June 16, 2006Date of Patent: September 7, 2010Assignee: Samsung Electronics Co., Ltd.Inventor: Kyoung-Ju Shin
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Patent number: 7787088Abstract: An in-plane switching mode liquid crystal display device includes a first substrate including a pixel electrode in a pixel region, a second substrate facing the first substrate and including a common electrode, a first alignment layer on the pixel electrode, a second alignment layer on the common electrode, a first ferroelectric liquid crystal layer on the first alignment layer and including a first spontaneous polarization, a second ferroelectric liquid crystal layer on the second alignment layer and including a second spontaneous polarization, a rotational direction of the first ferroelectric liquid crystal layer with respect to the first alignment layer being different from a rotational direction of the second ferroelectric liquid crystal layer with respect to the second alignment layer, and a twisted nematic liquid crystal layer between the first and second ferroelectric liquid crystal layers.Type: GrantFiled: June 23, 2005Date of Patent: August 31, 2010Assignee: LG Display Co., Ltd.Inventor: Su-Seok Choi
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Patent number: 7786969Abstract: In an OCB liquid crystal display device, a gradation voltage of a video signal is set to be lower than a black display optimum voltage, and a reverse transition prevention voltage is set to be higher than the black display optimum voltage and to be lower than a maximum applied voltage, and as the gradation voltage of the video signal becomes low, the reverse transition prevention voltage is set to be high.Type: GrantFiled: November 28, 2006Date of Patent: August 31, 2010Assignee: Toshiba Matsushita Display Technology Co., Ltd.Inventors: Shigesumi Araki, Kazuhiro Nishiyama, Mitsutaka Okita, Daiichi Suzuki
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Publication number: 20100201930Abstract: The present invention provides a nematic liquid crystal composition suitable for a bistable nematic liquid crystal display. A bistable nematic liquid crystal display having a wide nematic phase temperature range and operating temperature range can be obtained by using a nematic liquid crystal composition comprising at least 20% by weight of a specific liquid crystal compound (A) having a polar group and 5 to 50% by weight of a specific liquid crystal compound (B) not having a polar group, along with comprising, in the compound (B), at least 3% by weight of a specific liquid crystal compound having a alkenyl group.Type: ApplicationFiled: May 16, 2008Publication date: August 12, 2010Applicants: DIC CORPORATION, NEMOPTICInventors: Hidetoshi Nakata, Takeshi Kuriyama, Kiyofumi Takeuchi, Haruyoshi Takatsu, Daniel Stoenescu, Jean-Claude Dubois, Ivan Dozov
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Patent number: 7773165Abstract: The liquid crystal display includes a thin film transistor (TFT) panel including a pixel electrode in a rectangular shape having a transverse length longer than a longitudinal length, the pixel electrode including a first domain divider and having upper and lower half portions arranged symmetrically with respect to a transverse long axis passing through a center of the pixel electrode, a common electrode panel including a common electrode facing the pixel electrode, the common electrode including a second domain divider arranged parallel with the first domain divider, and a liquid crystal layer interposed between the TFT panel and the common electrode panel.Type: GrantFiled: December 5, 2006Date of Patent: August 10, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Ji-won Sohn, Mee-hye Jung, Nak-cho Choi, Ho-yun Byun, Seon-ah Cho, Sik-young Jo
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Patent number: 7773180Abstract: A liquid crystal display and a method for fabricating the same are disclosed, which can yield maximum liquid crystal efficiency from all areas within the pixels by orienting the liquid crystals in a manner that the liquid crystals are twisted by 90° in an area above the electrodes and twisted by 180° in an area in-between the electrodes. The liquid crystal display device includes, a pixel electrode insulated from a counter electrode having a plurality of slits on a first substrate, a second substrate facing into and adhered to the first substrate and having a liquid crystal layer formed therebetween, and an orientation layer formed on each inner surface of the first substrate and the second substrate, wherein one orientation layer is oriented to be twisted by 90° from above the pixel electrode and the other orientation layer is oriented to be twisted by 180° from above the slit.Type: GrantFiled: November 12, 2008Date of Patent: August 10, 2010Assignee: LG. Display Co., Ltd.Inventors: Hyun Kyu Lee, Seung Chan Choi
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Patent number: 7764346Abstract: A liquid crystal display device comprising: a peripheral electrode 31 that is formed around the outside of a display region 1a on a liquid crystal panel 1 and that generates an orientation state that is equivalent to that of the display region 1a; and an inverted electrode 32 that is formed around the outside of the peripheral electrode 31 and that generates an orientation state that has polarity opposite to that of the display region 1a; wherein the peripheral electrode 31 and the inverted electrode 32 have bipectinate construction and are arranged on both sides of a non-oriented buffer region 33. Orientation defects that are generated in a seal are trapped inside the buffer region 33 due to the existence of the peripheral electrode 31 and inverted electrode 32 that have different growth directions, so the orientation defects do not intrude into the display region 1a.Type: GrantFiled: September 7, 2007Date of Patent: July 27, 2010Assignee: Fujitsu LimitedInventors: Shinji Tadaki, Yoshinori Kiyota, Toshiaki Yoshihara, Hironori Shiroto, Tetsuya Makino, Keiichi Betsui
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Patent number: 7760312Abstract: A liquid crystal display having a viewing angle which is controllable in side directions without forming a white sub-pixel is disclosed. The vertical alignment type liquid crystal display has a display screen including a plurality of pixels. Each pixel includes a display control region in which an alignment of liquid crystal molecules is controlled such that the liquid crystal molecules are disposed in an inclined orientation with respect to the display screen when a control voltage is applied, and a viewing angle control region in which the alignment of the liquid crystal molecules is controlled such that the liquid crystal molecules are disposed in a first side orientation or in a second side orientation when a control voltage is applied. The control voltage is applied through a viewing angle control line separated from the display control region.Type: GrantFiled: December 27, 2006Date of Patent: July 20, 2010Assignee: LG. Display Co., Ltd.Inventor: Nagayama Kazuyoshi
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Patent number: 7760292Abstract: A view angle controlling LCD comprises a first panel part that has a first group of electrodes and a first liquid crystal layer driven by a first vertical electric field. The first group of electrodes includes a pixel electrode and a common electrode to generate the first vertical electric field. The view angle controlling LCD device further comprises a second panel part deposited on the first panel part that has a second group of electrodes and a second liquid crystal layer panel driven to have slope angle from the horizontal alignment condition by a second vertical electric field. The second group of electrodes includes a first electrode and a second electrode to generate the second vertical electric field.Type: GrantFiled: June 27, 2006Date of Patent: July 20, 2010Assignee: LG. Display Co., Ltd.Inventors: Hyun Suk Jin, Sun Hwa Lee, Hyun Seok Jang
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Patent number: 7760300Abstract: A sample for measuring an alignment axis for a liquid crystal display, a method of manufacturing the sample, and a method of measuring an alignment axis are disclosed. The sample includes a first substrate, a first alignment layer positioned on the first substrate, and a second alignment layer. The second alignment layer is positioned on the first alignment layer, and has an anisotropy more than an anisotropy of the first alignment layer.Type: GrantFiled: June 28, 2007Date of Patent: July 20, 2010Assignee: LG Display Co., Ltd.Inventors: Yong Sung Ham, Ha Young Lee, Byung Geol Kim
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Publication number: 20100141882Abstract: A liquid crystal display panel including a first substrate, a second substrate and a liquid crystal layer is provided. The first substrate includes a plurality of first unit regions, and each of the first unit regions includes at least a pixel region. A plurality of first alignment patterns are disposed in each of the pixel regions, wherein a width of the first alignment patterns in at least one first unit region is different from a width of the first alignment patterns in other first unit regions adjacent to the at least one first unit region. The second substrate is disposed opposite to the first substrate. The liquid crystal layer is disposed between the first substrate and the second substrate.Type: ApplicationFiled: March 25, 2009Publication date: June 10, 2010Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventor: Yui-Chen Liu
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Patent number: 7728934Abstract: A method for fabricating a liquid crystal display (LCD) is provided. The method includes the steps stated below. At first, providing an LCD panel including a first substrate, a second substrate and a liquid crystal layer therebetween. The liquid crystal layer includes several photo-sensitive monomers and several liquid crystal molecules. The LCD panel has at least a first pixel and a second pixel. Afterwards, correspondingly driving the first pixel and the second pixel by the first voltage and the second voltage. At last, applying a ultra-violet source onto the LCD panel to enable several photo-sensitive monomers to polymerize several alignment polymers on the first substrate and the second substrate.Type: GrantFiled: December 8, 2005Date of Patent: June 1, 2010Assignee: AU Optronics Corp.Inventor: Hao-Yu Chang
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Patent number: 7728804Abstract: A liquid crystal display device includes a thin film transistor arranged at crossings of gate lines and data lines; a pixel electrode connected to each thin film transistor; a common electrode arranged on a second substrate; a layer of liquid crystal material provided between the first and second substrates; a protrusion arranged on the common electrode for controlling an orientation of the liquid crystal molecules within the layer of liquid crystal material; and a common voltage generator applying an AC common voltage to the common electrode, wherein a polarity of the common voltage is inverted every predetermined period.Type: GrantFiled: May 30, 2003Date of Patent: June 1, 2010Assignee: LG Display Co., Ltd.Inventors: Sung Chul Park, Do Sung Kim
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Publication number: 20100110351Abstract: A liquid crystal display includes pixels, each pixel including a transmissive region and a reflective region. The transmissive region has a liquid crystal layer having a homogeneous alignment, and the reflective region has a liquid crystal layer having a hybrid alignment. In the transmissive region, an alignment layer, a common electrode, and a pixel electrode are on a same side of the liquid crystal layer. In the reflective region, an alignment layer, a common electrode, and a reflective pixel electrode are on a same side of the liquid crystal layer. The alignment layer of the reflective region has an alignment direction that is different from that of the alignment layer of the transmissive region.Type: ApplicationFiled: November 3, 2008Publication date: May 6, 2010Inventors: Hyang-Yul Kim, Zhibing Ge, Seung-Hee Lee, Shin-Tson Wu, Wang-Yang Li, Chung-Kuang Wei
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Patent number: 7705942Abstract: A liquid crystal display panel includes a first substrate, a second substrate, and a liquid crystal layer formed between the first substrate and second substrate. The second substrate has an active region, a sealant surrounding the active region, and a spacer wall located between the active region and the sealant. Additionally, the spacer wall is used to prevent the liquid crystal layer from being contaminated by the sealant and to support the first substrate.Type: GrantFiled: March 20, 2008Date of Patent: April 27, 2010Assignee: Himax Technologies LimitedInventor: Bing-Jei Liao
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Patent number: 7688407Abstract: A liquid crystal display with transmissive region and reflective region is provided. The display comprises an upper substrate and a lower substrate, which is settled in parallel with the upper substrate. A reflective layer is located on the reflective region of the lower substrate and an insulation layer covers the reflective layer and the lower substrate. Positive and negative driving electrodes are chiastically settled on the insulation layer. A first alignment film is positioned on the inner surface of the upper substrate, and the alignments of the first alignment film on the transmissive region and reflective region are different. A second alignment film covers the insulation layer, the positive and negative electrodes. A liquid crystal layer is located between the first alignment film and the second alignment film.Type: GrantFiled: May 12, 2006Date of Patent: March 30, 2010Assignee: AU Optronics CorporationInventors: Tzu-Yuan Lin, Chun-Hung Chiang, Fu-Cheng Hsieh, Po-Chang Wu, Ren-Hung Huang, Jin-Jei Wu, Chih-Ming Chang, Po-Lun Chen
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Publication number: 20100066960Abstract: A liquid crystal device comprises a first alignment surface which induces a high pretilt greater than 45° but less than 90°; a typical value is 85°. The pretilt has a component parallel to the surface pointing in a predetermined direction. A second alignment surface induces a low pretilt which is less than 45° but greater than 0°; a typical pretilt is 5°. The low pretilt has a component parallel to the second surface which also points in the predetermined direction. A layer of crystal material is disposed in between the first and second surfaces. A novel liquid crystal mode is thus provided and is referred to as the “splay-twist mode”. Such a device may be used in a switchable public/private display.Type: ApplicationFiled: October 25, 2007Publication date: March 18, 2010Inventors: Nathan James Smith, Benjamin John Broughton
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Patent number: 7679703Abstract: A liquid crystal display device according to the present invention includes: a vertical alignment liquid crystal layer; first and second electrodes arranged on one surface of first and second substrates to face the liquid crystal layer; and first and second alignment films arranged on the first and second electrodes, respectively, in contact with the liquid crystal layer. The first alignment film has been subjected to an optical alignment treatment by obliquely irradiating a first alignment film material, having a photosensitive wavelength within the wavelength range of 250 nm to 380 nm, with light including the photosensitive wavelength. The device further includes: a metal layer arranged between the first alignment film and the first substrate; and a first resin layer arranged between the metal layer and the first alignment film.Type: GrantFiled: September 28, 2006Date of Patent: March 16, 2010Assignee: Sharp Kabushiki KaishaInventors: Yoshito Hashimoto, Masumi Kubo, Akihiro Yamamoto
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Patent number: 7675598Abstract: An image display device includes a display panel, and a barrier including a plurality of transmissive portions and a plurality of blocking portions on the display panel, wherein the plurality of transmissive portions and the plurality of blocking portions are arranged in a matrix, wherein 3Nth rows and (3N?1)th rows include the plurality of transmissive portions and the plurality of blocking portions, N being a positive integer, (3N?2)th rows include the plurality of transmissive portions excluding the plurality of blocking portions, , and the transmissive and blocking portions are alternately arranged.Type: GrantFiled: December 26, 2006Date of Patent: March 9, 2010Assignee: LG Display Co., Ltd.Inventor: Hyung-Ki Hong
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Patent number: 7670654Abstract: A bistable nematic liquid crystal display device includes two cell walls enclosing a layer of a nematic liquid crystal material, means for applying an electric field across at least some of the layer, and means for inducing local planar alignments of said liquid crystal material at an inner surface of each cell wall. The local planar alignments are oriented to each other at an angle greater than 0° and less than 90°. The device also includes means for selectively masking an alignment effect of either of the local planar alignments by applying a unidirectional electric field pulse of suitable magnitude and duration to stabilise the device in one of two different homeoplanar configurations determined by the polarity of the pulse.Type: GrantFiled: March 23, 2006Date of Patent: March 2, 2010Assignee: Hewlett-Packard Development Company, L.P.Inventor: David Sikharulidze
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Patent number: 7663720Abstract: The present invention provides a liquid crystal display device which can decrease lowering of light utilization efficiency attributed to a light absorption axis of an alignment film. A liquid crystal display device includes a liquid crystal display panel and a backlight arranged on a back surface of the liquid crystal display panel. The liquid crystal display panel includes liquid crystal, and a first substrate and a second substrate arranged to face each other in an opposed manner with the liquid crystal therebetween. The first substrate is arranged between the second substrate and the backlight. The first substrate includes a first polarizer and a first alignment film arranged between the first polarizer and the liquid crystal. The second substrate includes a second polarizer and a second alignment film arranged between the second polarizer and the liquid crystal.Type: GrantFiled: February 21, 2008Date of Patent: February 16, 2010Assignee: Hitachi Displays, Ltd.Inventor: Chikae Matsui
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Publication number: 20100033656Abstract: The present invention relates to a liquid crystal display, comprising a lower alignment film formed on a lower substrate; an upper alignment film formed on an upper substrate; a liquid crystal layer sandwiched between the lower and upper substrates; a phase compensation film adhered on the outer surface of the upper substrate; and a polarizer adhered on the phase compensation film wherein the lower alignment film has an alignment angle of ?10 to 20° with respect to a horizontal line, the upper alignment film has an alignment angle of 40 to 55° with respect to a horizontal line, the liquid crystal layer has a phase delay value (d?n) of 0.24-0.27 ?m, the phase compensation film has a phase compensation function of ?/4 and also has an optical axis making 140-146° with a horizontal line, and the polarizer has a absorption axis making 120 to 122.5° with a horizontal line.Type: ApplicationFiled: August 21, 2009Publication date: February 11, 2010Inventors: Dong Hae SUH, Young Il PARK, Hee Cheol KIM, Hwan Su SHIM, Won Geon LEE
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Patent number: 7656465Abstract: Fine electrode patterns pattern-formed in the shape of fine teeth of a comb bilaterally symmetrical with respect to band-shaped portions are formed at even intervals in a pixel electrode, and band-shaped dielectric layers are pattern-formed at even intervals to cover the fine electrode patterns in a display pixel. By the existence of the dielectric layer and the fine electrode patterns complementing this, a portion formed with this layer and the fine electrode patterns is a high threshold voltage region, and relatively, a low threshold voltage region where the dielectric layer does not exist is formed. By the aforementioned construction, it becomes possible to improve a delay in response speed at low gray levels and increase the speed of halftone response, whereby a very reliable image display having moving image performance almost equal to that of a CRT is realized.Type: GrantFiled: October 14, 2005Date of Patent: February 2, 2010Assignee: Sharp Kabushiki KaishaInventors: Arihiro Takeda, Shingo Kataoka, Kimiaki Nakamura, Hideaki Tsuda, Takahiro Sasaki, Kazuya Ueda, Masahiro Ikeda, Katsunori Misaki, Naoto Kondo, Akira Komorita
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Publication number: 20100020281Abstract: A liquid crystal panel according to an exemplary embodiment of the present invention includes a substrate, and a pixel electrode arranged on the substrate. The pixel electrode includes a first subpixel electrode and a second subpixel electrode separated from each other, and the second subpixel electrode includes a first electrode part disposed above the first subpixel electrode and a second electrode part disposed below the first subpixel electrode and connected to the first electrode part. At least one first notch is arranged on at least one edge of the first subpixel electrode or the second subpixel electrode.Type: ApplicationFiled: February 20, 2009Publication date: January 28, 2010Applicant: Samsung Electronics Co., Ltd.Inventors: Mee-Hye Jung, Bong-Sung Seo, Young-Gu Kim, Ki-Won Kim, Min-Sik Jung, Byoung-Hun Sung
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Patent number: 7633563Abstract: An optical element is disclosed. The optical element may include a container having a holding chamber; a polarized or conductive and transparent first liquid filled in the holding chamber; a liquid crystal filled in the holding chamber and not mutually mixing with the first liquid; first and second electrodes applying an electric field to the first liquid; and voltage application means for applying voltage between the first electrode and the second electrode.Type: GrantFiled: April 2, 2007Date of Patent: December 15, 2009Assignee: Sony CorporationInventors: Tadahiro Ohishi, Kazuhiro Tanaka
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Patent number: 7633586Abstract: A display is provided for switching between a narrow or private viewing mode and a wide or public viewing mode. The display comprises a display device which is controlled to provide display of a desired image or sequence of images. This is associated with a liquid crystal device having at least one liquid crystal layer whose molecules are switchable between a first state providing a first angular viewing range and a second state providing a second angular viewing range which is within and smaller than the first angular viewing range. With the molecules in the second state, the device at least partially blocks light propagating towards part of the first angular viewing range outside the second angular viewing range. The or each liquid crystal layer is in contact with at least one alignment surface, the or each of which comprises a uniform non-patterned alignment surface.Type: GrantFiled: April 19, 2005Date of Patent: December 15, 2009Assignee: Sharp Kabushiki KaishaInventors: Robert Winlow, Zabbie J. Acosta, Martin D. Tillin, Paul Bonnett, Diana U. Kean, Grant Bourhill, Michel Sagardoyburu, Emma Jayne Walton, Koji Yabuta, Hiroshi Fukushima, Tomoo Takatani
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Patent number: 7630040Abstract: A liquid crystal display (200) includes a first base plate (202), a second base plate (220), a liquid crystal layer (238) located between the first base plate and the second base plate, and two alignment films (210, 228). The two alignment films are respectively positioned on inner surfaces of the first base plate and the second base plate. Each alignment film is a film of oriented carbon nanotubes (212, 230). An oriented direction of the carbon nanotubes on the first base plate is perpendicular to that of the carbon nanotubes on the second base plate. A manufacturing method for the liquid crystal display is also disclosed.Type: GrantFiled: June 21, 2006Date of Patent: December 8, 2009Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Liang Liu, Kai-Li Jiang, Shou-Shan Fan