With Particular Switching Device Patents (Class 349/41)
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Patent number: 8217872Abstract: The present invention provides a liquid crystal display device including an active matrix substrate with improved characteristics and providing high-contrast between black and white displays.Type: GrantFiled: December 26, 2008Date of Patent: July 10, 2012Assignee: Sharp Kabushiki KaishaInventors: Ryohki Itoh, Satoshi Horiuchi, Takaharu Yamada
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Publication number: 20120169955Abstract: An exemplary embodiment of the present invention provides a liquid crystal display including: a first insulating substrate; a light blocking member positioned on the first insulating substrate and having a frame portion defining openings for pixels; a step compensated pattern positioned on the first insulating substrate and in one of the openings; a second insulating substrate facing the first insulating substrate; a first electrode formed on the first insulating substrate in the same layer as a second domain dividing unit; a second electrode facing the first electrode and disposed in the same layer as the first domain dividing unit; and a liquid crystal layer interposed between the first electrode and the second electrode, wherein the step compensated pattern overlaps the first domain dividing unit or the second domain dividing unit.Type: ApplicationFiled: December 2, 2011Publication date: July 5, 2012Inventors: Ji-Sun Kim, Bong Hyun You, Chong-Chul Chai, Yeong-Keun Kwon, Mi-Seon Seo
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Publication number: 20120147282Abstract: Provided is a liquid crystal display to provide improved transmittance and visibility includes a first substrate; a first switching element and a second switching element formed on the first substrate configured to be switched by the same signal; a first subpixel electrode connected to the first switching element; a second subpixel electrode connected to the second switching element; a third switching element connected to the second switching element; a third subpixel electrode connected to the third switching element; a second substrate; a common electrode formed on the second substrate; and a liquid crystal layer formed between the first substrate and the second substrate.Type: ApplicationFiled: June 28, 2011Publication date: June 14, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyoung Ju SHIN, Hak Sun CHANG, Yong Hwan SHIN
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Patent number: 8199091Abstract: Gamma voltage conversion device includes a gamma voltage conversion circuit, an amplifier, and a gamma voltage adjusting circuit. The gamma voltage conversion circuit generates a first gamma voltage conformed to a first gamma curve according to a grey level. The amplifier includes a first input end receiving the first gamma voltage, a second end, and an output end. The amplifier outputs the first or a second gamma voltage conformed to a second gamma curve according to the grey level according to the first and the second ends of the amplifier. The gamma voltage adjusting circuit coupled between the second input end and the output end of the amplifier controls the amplifier to output the first or the second gamma voltage as the gamma driving voltage according to the grey level and a gamma curve selection signal.Type: GrantFiled: February 16, 2009Date of Patent: June 12, 2012Assignee: AU Optronics Corp.Inventors: Ming-Dou Ker, Shao-Chi Chen, Yu-Hsuan Li
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Patent number: 8199266Abstract: A pixel structure electrically connected to a data line and a scan line, and including a first and a second active device, a first and a second pixel electrode, and a first and a second capacitance electrode is provided. The first pixel electrode electrically connected to the first active device includes a first and a second electrode block electrically connected to each other. The second pixel electrode electrically connected to the second active device is electrically insulated from the first pixel electrode and separates the first and the second electrode block. The first pixel electrode respectively forms a first and a second capacitor with the first and the second capacitance electrode. The second pixel electrode respectively forms a third and a fourth capacitor with the first and the second capacitance electrode. The first and the second capacitor have different capacitances. The third and the fourth capacitor have different capacitances.Type: GrantFiled: March 16, 2008Date of Patent: June 12, 2012Assignee: Au Optronics CorporationInventors: Jenn-Jia Su, Ting-Wei Su, Wen-Hao Hsu
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Publication number: 20120133855Abstract: A liquid crystal display (LCD) is provided that includes: a first substrate; a gate line formed on the first substrate; a data line intersecting the gate line to define a pixel; a thin-film transistor (TFT) connected to the gate line and the data line and formed in the pixel; a sustain electrode line including a first sustain electrode that passes through the pixel, so as to divide the pixel into a first region and a transparent second region, and a second sustain electrodes that extend perpendicularly from the first sustain electrode; and a first pixel electrode connected to the TFT, disposed in the first region.Type: ApplicationFiled: April 19, 2011Publication date: May 31, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sang-Woo WHANGBO, Yong-Su LEE, Doo-Hee JUNG, Cheol-Gon LEE
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Publication number: 20120127386Abstract: A multi-channel semiconductor device comprises a plurality of buffer groups each comprising at least one output buffer, a plurality of pad groups each comprising at least one output pad, and a channel switching portion that controls connection between the plurality of buffer groups and the plurality of pad groups. One of the pad groups outputs an output signal of one of the buffer groups in a first operation mode and sequentially outputs output signals of all of the buffer groups in a second operation mode.Type: ApplicationFiled: November 25, 2011Publication date: May 24, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jae-wook Kwon, Chang-ho An, Ki-won Seo, Sung-ho Lee
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Patent number: 8184223Abstract: A first pixel electrode (17a), a second pixel electrode (17b), a third pixel electrode (17c), and a fourth pixel electrode (17d) are provided in a pixel (100); the first pixel electrode (17a) is connected to a data signal line (15x) via a first transistor (12a), the second pixel electrode (17b) is connected to the data signal line (15x) via a second transistor (12b), and the first transistor (12a) and the second transistor (12b) are connected to the same scanning signal line (16x); the first pixel electrode (17a) is connected to the third pixel electrode (17c) via a capacitor, and the second pixel electrode (17b) is connected to the fourth pixel electrode (17d) via a capacitor; one of two storage capacitor wires (18p, 18q) forms a capacitance with the first pixel electrode (17a), and the other one of the two storage capacitor wires (18p, 18q) forms a capacitance with the second pixel electrode (17b); and one of the two storage capacitor wires (18p, 18q) receives a storage capacitor wire signal, and the otherType: GrantFiled: December 26, 2008Date of Patent: May 22, 2012Assignee: Sharp Kabushiki KaishaInventor: Toshihide Tsubata
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Patent number: 8179511Abstract: A liquid crystal panel and a fabrication method thereof are provided. The liquid crystal panel includes: a gate line and a data line crossing each other to define a pixel; a thin film transistor including: a gate electrode connected to the gate line; a semiconductor layer formed on the gate electrode; a source electrode connected to the data line; a drain electrode; a gate insulating layer between the gate electrode and the drain electrode and between the gate line and the drain electrode; and a compensating parasitic capacitor between the gate line and the drain electrode for compensating a parasitic capacitance between the gate electrode and the drain electrode; and a pixel electrode connected to the drain electrode.Type: GrantFiled: June 13, 2006Date of Patent: May 15, 2012Assignee: LG Display Co., Ltd.Inventors: Moon Soo Kang, Hyung Ho Ahn
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Publication number: 20120113344Abstract: A display apparatus includes a light generating part and a display panel. The display panel includes a first substrate, and a second substrate facing the first substrate. The second substrate includes a plurality of pixel units including a sensor sensing the light generated from the light generating part and reflected from an object disposed on the display panel, and a pixel. The display panel further includes a light blocking member which is positioned at a position corresponding to an area in which the sensor is disposed and prevents the light generated from the light generating part from being directly incident to the sensor. The light blocking member is disposed on the first substrate.Type: ApplicationFiled: January 17, 2012Publication date: May 10, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sungryul KIM, Daecheol KIM, Woongkwon KIM, Ki-Hun JEONG, Sungjin MUN, Jung Suk BANG, Byeonghoon CHO, Kun-Wook HAN
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Patent number: 8168981Abstract: A display substrate includes; a gate line disposed on a substrate, a first insulating layer disposed on the substrate including the gate line, the first insulating layer including an opening part extended in a direction crossing the gate line, a data line disposed on the first insulating layer and an inner surface of the opening part, the data line extending in a direction substantially parallel with an extension direction of the opening part, a protective layer disposed on the first insulating layer and the data line, a switching element electrically connected to the gate line and the data line and a pixel electrode electrically connected to the switching element.Type: GrantFiled: December 31, 2008Date of Patent: May 1, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Seong-Kweon Heo, Chun-Gi You
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Patent number: 8169559Abstract: In an array substrate and a method of manufacturing the array substrate, an array substrate includes a first switching element, a second switching element, a third switching element and a fourth switching element. The first switching element is electrically connected to a first data line. The second switching element is electrically connected to a second data line adjacent to the first data line. The third switching element is electrically connected to a data power line interposed between the first and second data lines. The fourth switching element is electrically connected to a gate power line receiving a voltage having different polarity from a voltage applied to the data power line. Therefore, light transmittance, opening ratio and display quality are improved.Type: GrantFiled: February 3, 2009Date of Patent: May 1, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Hwa-Sung Woo, Joo-Nyung Jang, Cheol Shin, Yoon-Sung Um, Mi-Jeong Song
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Patent number: 8164701Abstract: In a liquid crystal display (LCD) device having a thin film transistor (TFT), the TFT includes a source electrode, a drain electrode and a semiconductor layer. At least one of the source electrode and drain electrode includes a first layer including copper and a second layer forming an oxide layer and covering the first layer. The semiconductor layer has a substantially linear current-voltage relationship with said source electrode or drain electrode including said first and second layers, when a voltage is applied between the semiconductor layer and said source electrode or drain electrode.Type: GrantFiled: August 13, 2009Date of Patent: April 24, 2012Assignee: Advanced Interconnect Materials, LLC.Inventors: Junichi Koike, Hideaki Kawakami
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Patent number: 8159625Abstract: An active matrix substrate including a substrate, a plurality of scan lines, a plurality of data lines, a plurality of independent common line patterns, and a plurality of pixels is provided. The scan lines, data lines, and common line patterns are disposed on the substrate. The pixels are arranged in array on the substrate, wherein each pixel is electrically connected to corresponding scan line and data line, and the common line patterns are distributed under each pixel. Each pixel includes a plurality of active components and a plurality of pixel electrodes. Each of the pixel electrodes is electrically connected to corresponding scan line and data line through different active components. The capacitance coupling effect between each of the pixel electrodes and common line patterns are different. Additionally, an inspection method for the active matrix substrate and a liquid crystal display having the active matrix substrate are further provided.Type: GrantFiled: November 3, 2006Date of Patent: April 17, 2012Assignee: Au Optronics CorporationInventors: Wei-Kai Huang, Ying-Tsang Liu, Chen-Shun Tsai, Jeng-Shin Chen, Yu-Chieh Lin
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Publication number: 20120086880Abstract: First and second polarizers are disposed in cross-Nichol configuration. A liquid crystal cell is disposed between the two polarizers and establishes vertical alignment in a state of no voltage application. An even number of optical films having optical anisotropy and disposed between the liquid crystal cell and first polarizer. A retardation of the liquid crystal cell is in a range between 300 nm and 1500 nm; and each optical film satisfies nx>n?z, an in-plane retardation is smaller than 300 nm, a thickness direction retardation is in a range between 50 nm and 300 nm, an angle between an in-plane slow axis of the optical film disposed nearest to the first polarizer and an absorption axis of the first polarizer is smaller than 45°, and the slow axes of mutually adjacent optical films are perpendicular to each other.Type: ApplicationFiled: December 16, 2011Publication date: April 12, 2012Applicant: STANLEY ELECTRIC CO., LTD.Inventor: Yoshihisa IWAMOTO
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Patent number: 8154678Abstract: The present invention provides a display device which can display characters clearly and display images smoothly. An area gray scale method is adopted and a configuration of one pixel is changed depending on a mode, by selecting one or more display regions in each pixel. When characters are needed to be displayed clearly, one pixel is configured by selecting a stripe arrangement. Thus, clear display can be conducted. When images are needed to be displayed, one pixel is configured by selecting an indented state. Thus, smooth display can be conducted.Type: GrantFiled: February 23, 2011Date of Patent: April 10, 2012Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hajime Kimura, Shunpei Yamazaki
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Publication number: 20120081627Abstract: A display panel includes a first substrate including a plurality of pixels, a second substrate facing the first substrate, and a liquid crystal layer disposed between the first and second substrates. Each pixel includes a data line, a gate line insulated from the data line, a first signal line insulated from the data line, a second signal line insulated from the data line, a switching device connected to the data line and the gate line, a first pixel electrode connected to the switching device, and a second pixel electrode connected either the first signal line or the second signal line. The display panel displays an image according to an electric field generated between the first and second pixel electrodes.Type: ApplicationFiled: May 12, 2011Publication date: April 5, 2012Inventors: Se Hyoung Cho, Woo-Sung Sohn, Donggyu Kim
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Patent number: 8144276Abstract: An LC-based optical device compensates for differences in optical path lengths of polarization components of input beam. As a result, PDL and PMD of the optical device are reduced. The compensation mechanism may be a glass plate that is disposed in an optical path of a polarization component so that the optical path length of that polarization component can be made substantially equal to the optical path length of the other polarization component that traverses through a half-wave plate. Another compensation mechanism is a birefringent displacer that has two sections sandwiching a half-wave plate, wherein the two sections are of different widths and the planar front surface of the birefringent displacer can be positioned to be non-orthogonal with respect to the incident input light beam.Type: GrantFiled: May 29, 2009Date of Patent: March 27, 2012Assignee: Oclaro (North America), Inc.Inventors: Xuefeng Yue, Ruibo Wang
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Patent number: 8130333Abstract: An electric optical device includes a transistor that includes a semiconductor layer having a source region connected to a data line, a drain region connected to a pixel electrode, and a channel region, and a gate electrode, a first light blocking film that is formed to be wider than the gate electrode and that is connected to the gate electrode via a first contact hole which is opened in a first insulating film disposed on the gate electrode, and a second light blocking film that is provided between the semiconductor layer and a substrate and is connected to the first light blocking film via a second contact hole which is opened to penetrate the first insulating film, a gate insulating film, and a second insulating film.Type: GrantFiled: March 4, 2011Date of Patent: March 6, 2012Assignee: Seiko Epson CorporationInventor: Takafumi Egami
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Publication number: 20120038843Abstract: A liquid crystal display according to an exemplary embodiment of the present invention includes: a first substrate and an opposing second substrate; a first pixel electrode and a second pixel electrode disposed in a pixel area, on the first substrate, and including a plurality of branch electrodes; and a liquid crystal layer interposed between the first and second electrodes. Branches electrode of the first pixel electrode and the second pixel electrode are interlaced. The first pixel electrode has an extension disposed adjacent to the center of the pixel area, and a minimum distance between the extension and the adjacent branch electrode is different from an average minimum between the adjacent branch electrodes.Type: ApplicationFiled: June 8, 2011Publication date: February 16, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Mee-Hye JUNG, Doo-Hwan YOU, Young-Hoon YOO, Woo-Sung SOHN, Sung-Hoon KIM, Jae-Yong SHIN, Se-Hyoung CHO, Hye-Seok NA, Hong-Jo PARK, Hyang-Yul KIM
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Patent number: 8115883Abstract: An object is to provide a display device with excellent display characteristics, where a pixel circuit and a driver circuit provided over one substrate are formed using transistors which have different structures corresponding to characteristics of the respective circuits. The driver circuit portion includes a driver circuit transistor in which a gate electrode layer, a source electrode layer, and a drain electrode layer are formed using a metal film, and a channel layer is formed using an oxide semiconductor. The pixel portion includes a pixel transistor in which a gate electrode layer, a source electrode layer, and a drain electrode layer are formed using an oxide conductor, and a semiconductor layer is formed using an oxide semiconductor. The pixel transistor is formed using a light-transmitting material, and thus, a display device with higher aperture ratio can be manufactured.Type: GrantFiled: August 23, 2010Date of Patent: February 14, 2012Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Junichiro Sakata, Masashi Tsubuku, Kengo Akimoto, Miyuki Hosoba, Masayuki Sakakura, Yoshiaki Oikawa
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Publication number: 20120026420Abstract: In one embodiment, first and second driver circuits are arranged interposing a matrix of pixels. A timing control circuit is electrically connected with the first and second driver circuits. The first driver circuit including a first sequential circuit is electrically connected with the odd scanning lines, and supplies scanning signals to the odd signal lines in order. The second driver circuit including a second sequential circuit is electrically connected with the even scanning lines, and supplies the scanning signals to the even scanning lines in order. The timing control circuit generates first and second synchronization signals, and supplies the first synchronization signal to the first driver circuit and the second synchronization signal to the second driver circuit. The first and second driver circuits supply the scanning signals to the scanning lines in order for every line upon receiving the first synchronization signal and the second synchronization signal from the timing control circuit.Type: ApplicationFiled: July 22, 2011Publication date: February 2, 2012Applicant: Toshiba Mobile Display Co., Ltd.Inventor: Akihiko SAITOH
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Publication number: 20120013817Abstract: A liquid crystal display device includes a substrate, a gate line, first and second data lines, a first power line, first, second, third and fourth switching elements, and first, second, third and fourth pixel electrodes. The first switching element is connected to the gate line and the first data line. The second switching element is connected to the gate line and the first power line. The third switching element is connected to the gate line and the second data line. The fourth switching element is connected to the gate line and the first power line. The first to fourth pixel electrodes are connected to the first to fourth switching elements, respectively. Thus, a light leakage may be prevented and an aperture ratio of a display substrate may be enhanced.Type: ApplicationFiled: June 8, 2011Publication date: January 19, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Dong-Gyu KIM, Hye-Seok NA, Mee-Hye JUNG, Dong-Hyeon KI, Se-Hyoung CHO
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Publication number: 20120008058Abstract: In a display apparatus, each pixel includes a gate line, a storage line spaced apart from the gate line, and a data line crossing the gate line. The pixel includes a switching device connected to the gate line and the data line, a protective layer provided with an opening formed therethrough in an area where the gate line and the storage line are arranged adjacent to each other, and a pixel electrode arranged on the protective layer to be connected to the switching device and overlapped with the storage line. The opening is overlapped either the gate line or the storage line. Thus, a direct-current electric field is formed between the gate line and the storage line corresponding to an area where the opening in the protective layer is formed, and impurity ions are trapped by the direct-current electric field.Type: ApplicationFiled: April 19, 2011Publication date: January 12, 2012Inventors: Sungwoon KIM, Joonyung Jang
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Patent number: 8094253Abstract: Disclosed herein is a driving method of a display device. The display device includes display elements arranged in a form of a two-dimensional matrix and each have a driving circuit and a light emitting section. The driving circuit includes a driving transistor having a gate electrode and source/drain regions and a capacitance section, and a current flowing through the light emitting section via the source/drain regions of the driving transistor. The driving method includes the step of performing a first writing process, a second writing process, and then setting the gate electrode of the driving transistor in a floating state. A current corresponding to a value of a voltage retained in the capacitance section for retaining a voltage of the gate electrode of the driving transistor with respect to a source region of the driving transistor flows through the light emitting section, so that the light emitting section emits light.Type: GrantFiled: January 3, 2011Date of Patent: January 10, 2012Assignee: Sony CorporationInventors: Tomoaki Handa, Naobumi Toyomura, Hideki Sugimoto, Katsuhide Uchino
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Patent number: 8094252Abstract: A method of driving a display apparatus formed by arranging display devices each having a driving circuit and a current-driven type light emitting portion, the method comprising the steps of: performing a threshold voltage cancelling process in units of a display device row in which a predetermined reference voltage is applied to a gate electrode of a driving transistor of Q×N display devices configuring groups of display device rows and a predetermined driving voltage is applied to one source/drain region of the Q×N display devices so as to change the electric potential of the other source/drain region toward an electric potential calculated by subtracting a threshold voltage of the driving transistor from the reference voltage during a period TQ; and sequentially performing a writing process, in which video signals are applied to the gate electrodes of the driving transistor of N display devices configuring the display device row, Q times.Type: GrantFiled: September 15, 2010Date of Patent: January 10, 2012Assignee: Sony CorporationInventors: Tomoaki Handa, Tetsuro Yamamoto, Hideki Sugimoto, Katsuhide Uchino
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Patent number: 8089574Abstract: An active matrix substrate includes a transistor, a pixel electrode, a drain lead electrode connected with the drain electrode of the transistor, and a contact hole connecting the drain lead electrode and the pixel electrode. A non-electrode through-bore portion is created on the drain lead electrode, and an opening of the contact hole crosses the through-bore portion. As a result, any changes or decreases in the contact area between the drain lead electrode and the pixel electrode may be prevented or reduced significantly, while the open area ratio can be improved.Type: GrantFiled: July 28, 2006Date of Patent: January 3, 2012Assignee: Sharp Kabushiki KaishaInventors: Toshihide Tsubata, Yoshihiro Okada, Atsushi Ban, Toshinori Sugihara
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Publication number: 20110304789Abstract: A liquid crystal display includes a gate line, a data line crossing the gate line and insulated from the gate line, a common voltage line separated from the gate line and the data line, where the common voltage line transfers a predetermined voltage, a first switching element connected to the gate line and the data line, a second switching element connected to the gate line and the data line, a first liquid crystal capacitor connected to the first switching element, a second liquid crystal capacitor connected to the second switching element and at least two decompressing switching elements connected to the second switching element and the common voltage line.Type: ApplicationFiled: January 7, 2011Publication date: December 15, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kwang-Chul JUNG, Chong-Chul CHAI, Joon-Chul GOH, Young-Soo YOON
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Patent number: 8072405Abstract: The present invention provides a liquid crystal display device which can recover a charge stored in a liquid crystal display panel without using an exteriorly mounted part such as a coil thus achieving the low power consumption. A display device includes a liquid crystal display panel having a plurality of pixels, a plurality of video lines which apply a video voltage to the plurality of pixels, and a drive circuit which supplies the video voltage to the plurality of video lines. In such a display device, the liquid crystal display panel has a common electrode to which a first voltage and a second voltage having a potential higher than a potential of the first voltage are alternately applied.Type: GrantFiled: April 24, 2009Date of Patent: December 6, 2011Assignee: Hitachi Displays, Ltd.Inventors: Shigeyuki Nishitani, Hideo Sato
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Patent number: 8068190Abstract: In a photosensor in the pixel region of an active matrix substrate, the potential of a storage node is read out to output wiring as sensor circuit output, the potential of the storage node having changed in accordance with the amount of light received by a photodetection element in a sensing period, the sensing period being from when a reset signal (RS) is supplied until when a readout signal (RW) is supplied. A sensor startup period whose length is greater than or equal to the length of the sensing period is provided after a sensor data unnecessary period in which the sensor circuit output is not necessary, and furthermore before a valid sensor data period in which the sensor circuit output is necessary, and the sensor circuit output is read out in the valid sensor data period from the photosensor to which the reset signal was applied in the sensor startup period.Type: GrantFiled: June 2, 2009Date of Patent: November 29, 2011Assignee: Sharp Kabushiki KaishaInventors: Kazuhiro Maeda, Ichiro Shiraki, Hiromi Katoh, Kouji Kumada
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Publication number: 20110267554Abstract: A liquid crystal display includes first and second gate lines arranged in parallel to each other and sequentially transmitting a gate voltage, a data line crossing the first and second gate lines and transmitting a data voltage, a pixel electrode constituted by first and second sub-pixel electrodes and electrically disconnected from each other, a first switching element connected to the first gate line, the data line, and the first sub-pixel electrode, a second switching element connected to the first gate line, the data line, and the second sub-pixel electrode, a third switching element connected to the first sub-pixel electrode across a charge-sharing capacitor, and a fourth switching element connected to the second gate line and the second sub-pixel electrode and connected to the first sub-pixel electrode across the charge-sharing capacitor.Type: ApplicationFiled: July 12, 2011Publication date: November 3, 2011Inventors: Young-Chol Yang, JianGang Lu, Seung-Hoon Lee
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Publication number: 20110267553Abstract: A liquid crystal display device includes: first and second substrates facing and spaced apart from each other; a gate line and a data line on the first substrate, the gate line and the data line crossing each other to define a pixel region; a thin film transistor and a pixel electrode in the pixel region on the first substrate, the thin film transistor connected to the gate line and the data line, the pixel electrode connected to the thin film transistor; a common electrode on the second substrate, the common electrode facing the pixel electrode; at least one first reset electrode and at least one second reset electrode on one of the first and second substrates, the at least one first reset electrode and the at least one second reset electrode spaced apart from each other; and a bi-stable chiral splay nematic liquid crystal layer between the first and second substrates, the bi-stable chiral splay nematic liquid crystal layer having bi-stable states of a splay state as an initial state and a ?-twist state, wheType: ApplicationFiled: May 3, 2011Publication date: November 3, 2011Inventors: Dong-Guk Kim, Wook-Sung KIM
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Publication number: 20110249209Abstract: A LCD device that includes a gate driver transferring a plurality of gate signals to a plurality of gate lines, a gate driver transferring a plurality of gate signals to a plurality of data lines, and a pixel unit including a plurality of pixels arranged in a matrix form. The pixel unit includes a plurality of pixel pairs in each of which two corresponding pixels included in two neighboring pixel columns, respectively, and in the same pixel row, from among the plurality of pixels, are connected in common to a corresponding data line of the plurality of data lines and a corresponding gate line of the plurality of gate lines, and wherein a gate signal transferred to a predetermined pixel row through a corresponding gate line is transferred to a pixel on one side and a pixel on the other side from among a plurality of pixel pairs included in two pixel rows different from the predetermined pixel row, thereby controlling a switching operation.Type: ApplicationFiled: October 21, 2010Publication date: October 13, 2011Applicant: SAMSUNG MOBILE DISPLAY CO., LTD.Inventor: Byoung-Ick KO
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Publication number: 20110249210Abstract: A liquid crystal display device includes a plurality of pixels at intersections of a plurality of row lines and a plurality of column lines, wherein each pixel includes a switching transistor, and pixel and common electrodes that induce an in-plane electric field; a plurality of gate lines each connected to the pixels on each row line; a plurality of data lines each connected to the pixels on each column line; and a plurality of common lines each connected to the common electrodes of the pixels alternately located on neighboring two row lines per one column line.Type: ApplicationFiled: December 28, 2010Publication date: October 13, 2011Inventors: Sai-Chang YUN, Seung-Ho Heo, You-Sung Nam, Yong-Hwa Park, Dae-Seok Oh
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Publication number: 20110234933Abstract: The invention relates to an active matrix liquid crystal display device which uses a switching device to control a pixel, and an object is to provide a liquid crystal display device which has an excellent viewing angle property and high brightness and a fabrication method of the same. A TFT substrate has a structure which reduces the film thickness of a protective insulating film in a control capacitance part in which control capacitance is formed and the film thickness of a protective insulating film in an auxiliary capacitance part in which auxiliary capacitance is formed thinner than the film thickness of a protective insulating film which covers a TFT and the other elements.Type: ApplicationFiled: June 6, 2011Publication date: September 29, 2011Applicant: Sharp Kabushiki KaishaInventors: Yoshio Kurosawa, Shuntaro Kosugi
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Patent number: 8026990Abstract: A method of compensating performance of a thin film transistor including a gate electrode, source and drain electrodes that are spaced apart from each other and insulated from the gate electrode, and an active layer to form a channel between the source and drain electrodes, includes applying a negative voltage to the gate electrode to compensate deterioration of the active layer.Type: GrantFiled: October 10, 2008Date of Patent: September 27, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Tae-Hyung Hwang, Hyung-Il Jeon, Nikulin Ivan
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Publication number: 20110228187Abstract: A liquid crystal display panel includes a first substrate, a second substrate, a first electrode, a second electrode, a third electrode, an isolating layer, and a conductor. The first electrode is disposed between the first substrate and the isolating layer, on which the conductor is disposed. Each of the second and third electrodes is disposed on the second substrate and includes a contact surface. The second and third electrodes are not in contact with each other and are separated by a gap. The conductor is disposed in accordance with the location of the gap.Type: ApplicationFiled: May 30, 2011Publication date: September 22, 2011Inventors: Jeng-Fang Wu, Yi-Pai Huang, Ting-Jui Chang, Wei-Lung Liao, Shui-Chih Lien
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Publication number: 20110221989Abstract: A Liquid Crystal Display (LCD) device and a method of manufacturing the same are provided. The liquid crystal molecules are inclined and rearranged in a radial shape by patterning upper and lower electrodes across and apart from each other on dummy pixels disposed on a black matrix formed in a non-display area of an LCD device and applying an electric field to a liquid crystal layer via the upper and lower electrodes. Thus, ion impurities in the non-display area can be prevented from dispersing to a display area, thereby improving edge part stains of the LCD device.Type: ApplicationFiled: January 11, 2011Publication date: September 15, 2011Applicant: Samsung Mobile Display Co., Ltd.Inventors: Dae-Won LEE, Kyung-Min Park
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Publication number: 20110221990Abstract: A display device that prevents occurrence of a phenomenon where a boundary portion of a pixel region becomes dark, and a method of manufacturing the same.Type: ApplicationFiled: March 11, 2011Publication date: September 15, 2011Applicant: SAMSUNG MOBILE DISPLAY CO. LTD.Inventors: Jae-Young Lee, Seong-Jun Lee, Yi Li, Ju-Yeon Seo
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Publication number: 20110221988Abstract: A liquid crystal display includes first and second substrates, and a liquid crystal layer disposed therebetween. First and second gate lines are disposed on the first substrate. First and second data lines, and a power line are disposed on the first substrate. A first switching element is connected to the first gate line and the first data line, a second switching element is connected to the first gate line and the power line, a third switching element is connected to the second gate line and the second data line, a first pixel electrode is connected to the first switching element, a second pixel electrode is connected to the second switching element, a third pixel electrode is connected to the second switching element, and a fourth pixel electrode is connected to the third switching element, and a gate-on voltage can be simultaneously applied to the first and second gate lines.Type: ApplicationFiled: October 7, 2010Publication date: September 15, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Se-Hyoung Cho, Dong-Gyu Kim, Mee-Hye Jung, Dong-Hyeon Ki, Seung-Soo Baek, Hye-Seok Na
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Patent number: 8018546Abstract: The present invention provides a display device which can display characters clearly and display images smoothly. An area gray scale method is adopted and a configuration of one pixel is changed depending on a mode, by selecting one or more display regions in each pixel. When characters are needed to be displayed clearly, one pixel is configured by selecting a stripe arrangement. Thus, clear display can be conducted. When images are needed to be displayed, one pixel is configured by selecting an indented state. Thus, smooth display can be conducted.Type: GrantFiled: February 23, 2011Date of Patent: September 13, 2011Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hajime Kimura, Shunpei Yamazaki
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Patent number: 8018541Abstract: An array substrate for IPS mode LCD device includes first and second gate lines on a substrate including first and second pixel regions; a first common connection pattern in an upper side of each of the first and second pixel regions; first and second outmost common electrodes extending from the first common connection pattern; first and second data lines crossing the first and second gate lines, the first and second pixel regions adjacent to each other along the first and second data lines; a TFT connected to the first gate line and the first data line pixel electrodes; a pixel connection pattern connected to the drain electrode common electrodes alternately arranged with the pixel electrodes; and a second common connection pattern at a lower side of the pixel regions and connected to the second outmost common electrode.Type: GrantFiled: September 17, 2009Date of Patent: September 13, 2011Assignee: LG Display Co., Ltd.Inventors: Min-Jic Lee, Seung-Chan Shin
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Patent number: 8018548Abstract: A liquid crystal display device includes a liquid crystal display panel PNL including a pair of mutually opposed substrates, a display section which is composed of a plurality of matrix-arrayed display pixels, and a peripheral region surrounding the display section, a driving circuit, which drives the display pixels, a controller which controls the driving circuit, and a power supply circuit which supplies power to the driving circuit and the controller, wherein the controller and the power supply circuit are built in a 1-chip system IC and are disposed on the peripheral region.Type: GrantFiled: January 18, 2008Date of Patent: September 13, 2011Assignee: Toshiba Matsushita Display Technology Co., Ltd.Inventors: Kazuaki Igarashi, Hisanori Futaki
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Publication number: 20110216259Abstract: A display panel includes a first substrate, a second substrate facing the first substrate, and a liquid crystal layer. The first substrate includes a plurality of pixels, each having at least one gray scale expression unit to express at least two gray scales. The liquid crystal layer is interposed between the first and second substrates and subject to a phase transition depending on a voltage generated in relation to the gray scale expression unit. The gray scale expression unit includes a data line, a gate line crossing the data line and insulated from the data line, a switching device connected to the data line and the gate line, a first pixel electrode connected to the switching device, at least one coupling capacitor connected to the first pixel electrode in parallel, and at least one second pixel electrode connected to the first pixel electrode in parallel through the coupling capacitor.Type: ApplicationFiled: August 10, 2010Publication date: September 8, 2011Applicant: Samsung Electronics Co., Ltd.Inventors: Youngeun JO, Kyoungju Shin, Nakcho Choi, Sangil Kim, Chongchul Chai, Meehye Jung, Hee-Keun Lee
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Publication number: 20110216260Abstract: A display device includes a plurality of gate lines arranged substantially parallel to each other in a first direction; a plurality of charge share gate lines arranged substantially parallel to each other in the first direction; a plurality of data lines arranged substantially parallel to each other in a second direction, wherein the second direction is substantially perpendicular to the first direction; and a plurality of pixels arranged in a matrix form in along the first direction and the second direction and each of the plurality of pixels which includes a first switching element and a second switching element, wherein the a first gate line of the plurality of gate lines is electrically connected to the first switching element included in one individual pixel of the plurality of pixels, and the a second gate line of the plurality of gate lines is electrically connected to the second switching element included in the individual pixel of the plurality of pixels.Type: ApplicationFiled: December 9, 2010Publication date: September 8, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kee-Bum PARK, Si Hyun AHN, Kyong Sik CHOI, Seon-Kyoon MOK, Eun CHO
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Patent number: 8004625Abstract: An active matrix substrate is provided, which includes a substrate, a plurality of scan lines, data lines, pixel unites, and pre-charge components. The scan lines, data lines and pixel units are all disposed on the substrate. The pixel units are electrically connected with the corresponding scan lines and data lines. Each pixel unit includes an active device and a pixel electrode. The active devices are electrically connected with the scan lines, the data lines and the pixel electrodes. Each pre-charge component is electrically connected with one of the scan lines and two adjacent pixel electrodes controlled by the next scan line. When the pre-charge component is turned on via the scan line electrically connected therewith, the two adjacent pixel electrodes electrically connected with each pre-charge component have the same voltage level so that the two adjacent pixel units are pre-charged.Type: GrantFiled: June 25, 2008Date of Patent: August 23, 2011Assignee: Wintek CorporationInventor: I-Fang Wang
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Publication number: 20110194043Abstract: An optical switching device includes an array of liquid crystal macropixels, wherein each macropixel includes at least two liquid crystal subpixels. The subpixels may be controlled together to act as a single polarizing pixel, or independently to act as multiple polarizing pixels. When the switching device processes a WDM having a wide channel spacing, the subpixels are controlled together, and when the switching device processes a WDM having a narrow channel spacing, each subpixel is controlled independently.Type: ApplicationFiled: April 18, 2011Publication date: August 11, 2011Inventor: Giovanni Barbarossa
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Publication number: 20110194031Abstract: An active matrix substrate of the present invention for use in a liquid crystal panel includes a scanning signal line (16x), a data signal line (15x), and a transistor (12a) connected to the scanning signal line (16x) and the data signal line (15x), with first and second pixel electrodes (17a and 17b) provided in each pixel (101), one of the pixel electrodes (17a) being connected to the data signal line (15x) via the transistor (12a). The active matrix substrate includes first and second capacitor electrodes (37a and 38a) electrically connected to the pixel electrode (17a), capacitors being formed between the capacitor electrodes (37a and 38a) and the other pixel electrode (17b), respectively. This makes it possible to improve yields of manufacture of capacitively-coupled pixel-division type active matrix substrates and liquid crystal panels including the same.Type: ApplicationFiled: July 23, 2009Publication date: August 11, 2011Applicant: SHARP KABUSHIKI KAISHAInventor: Toshihide Tsubata
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Publication number: 20110187952Abstract: A display circuit adapted for a display device and the display device are provided. The display device comprises a gate drive device, a data drive device and the display circuit. The display circuit comprises at least one display unit which has four pixels. Each of the pixels has two sub-pixels, each of which has a transistor coupled to a pixel electrode. The transistors of the two sub-pixels of each of pixels are cascaded to electrically connect to the data drive device. The transistors of the two sub-pixels of each of pixels are electrically connected to the gate drive device, respectively, to receive signals, provided from the gate drive device, as switching signals for determining whether a data voltage provided by the data drive device is received or not.Type: ApplicationFiled: December 6, 2010Publication date: August 4, 2011Inventors: Chao Liang LU, Jing-Tin Kuo, Keng-Ming Chen, Yu-Cheng Tsai, Chi-Mao Hung
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Publication number: 20110176080Abstract: An electro-optic device including: a plurality of pixels disposed corresponding to a plurality of colors; and a drive circuit adapted to drive the pixels, wherein the drive circuit drives the pixels based on a drive voltage set for each of the colors in accordance with a mixture ratio between the colors, and a drive pattern provided in accordance with the drive voltage and adapted to designate one of switching ON and OFF of the pixels at each of sub-fields constituting a frame in accordance with a grayscale level, and the drive voltages are set so that a voltage range of the drive voltage is different between the pixel corresponding to at least one of the colors and the pixel corresponding to another of the colors, the colors having respective proportions of mixture different from each other.Type: ApplicationFiled: January 12, 2011Publication date: July 21, 2011Applicant: SEIKO EPSON CORPORATIONInventor: Takashi TOYOOKA