Polarity Based Driving Patents (Class 349/37)
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Patent number: 8390750Abstract: In a liquid crystal display device where pixel electrodes and counter electrodes are arranged on one substrate in a stacked manner by way of an insulation layer, it is possible to lower a drive voltage while maintaining optical transmissivity. Pixels each of which includes a first pixel electrode, a second pixel electrode and a counter electrode are arranged on a substrate in a matrix array. A first pixel electrode and a second pixel electrode in one pixel include a plurality of comb-teeth portions respectively. The first pixel electrode and the second pixel electrode are alternately arranged on the same layer in an opposed manner with a gap defined between the comb-teeth portion of the first pixel electrode and the comb-teeth portion of the second pixel electrode. The first and second pixel electrodes and the counter electrode are arranged in a stacked manner with an insulation layer sandwiched therebetween.Type: GrantFiled: September 3, 2009Date of Patent: March 5, 2013Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventor: Kikuo Ono
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Patent number: 8368829Abstract: A liquid crystal display device includes a plurality of pixels each including a first subpixel and a second subpixel having liquid crystal layers to which mutually different voltages are applicable, and two switching elements that are provided for the first and second subpixels, respectively. The device further includes a plurality of storage capacitor trunks electrically connected to respective storage capacitor counter electrodes of either the first subpixels or the second subpixels of the pixels through storage capacitor lines.Type: GrantFiled: May 31, 2012Date of Patent: February 5, 2013Assignee: Sharp Kabushiki KaishaInventors: Masae Kitayama, Fumikazu Shimoshikiryoh
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Pixels having polarity extension regions for multi-domain vertical alignment liquid crystal displays
Patent number: 8339529Abstract: A multi-domain vertical alignment liquid crystal display that does not require physical features on the substrate (such as protrusions and ITO slits) is disclosed. Each pixel of the MVA LCD is subdivided into color components, which are further divided into color dots. The color components include polarized extension regions that extend between color dots of neighboring color components (and neighboring pixels). The voltage polarity of the color dots and polarized extension regions are arranged so that fringe fields in each color dot causes multiple liquid crystal domains in each color dot. Specifically, the color dots and polarity extension regions of the display are arranged so that neighboring polarized elements have opposite polarities.Type: GrantFiled: September 12, 2011Date of Patent: December 25, 2012Assignee: Hiap L. Ong and Kyoritsu Optronics Co., Ltd.Inventor: Hiap L. Ong -
Patent number: 8330694Abstract: The liquid crystal display apparatus includes a liquid crystal modulation element including first and second electrode, a liquid crystal layer disposed between the first and second electrodes, a first alignment film disposed between the first electrode and the liquid crystal layer, and a second alignment film disposed between the second electrode and the liquid crystal layer. The apparatus further includes a controller that respectively provides first and second electric potentials to the first and second electrodes such that a sign of an electric field generated in the liquid crystal layer is cyclically inverted in a modulation operation state. The controller respectively provides third and fourth electric potentials to the first and second electrodes such that the sign of the electric field is fixed in a state other than the modulation operation state. The apparatus can avoid an influence by cumulated charged particles without adding a new member.Type: GrantFiled: June 4, 2008Date of Patent: December 11, 2012Assignee: Canon Kabushiki KaishaInventor: Masayuki Abe
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Publication number: 20120307170Abstract: A barrier driving circuit includes a barrier driving section that supplies drive signals to two or more liquid crystal barriers that are adjacent to each other and to be placed into a closed state among a plurality of liquid crystal barriers. The plurality of liquid crystal barriers are disposed side-by-side and each of the liquid crystal barriers is switchable between an open state and the closed state. The drive signals supplied to the two or more liquid crystal barriers have respective polarities that are same with respect to one another.Type: ApplicationFiled: May 24, 2012Publication date: December 6, 2012Applicant: Sony CorporationInventors: Yuichi Inoue, Chiaki Kanai
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Publication number: 20120300146Abstract: A display panel is provided and includes gate lines, source lines, and pixel units. Each gate line extends in a first direction, while each source line extends in a second direction interlacing with the first direction. The pixel units are arranged to form a display array. Each pixel unit is coupled to three sequentially disposed gate lines and three sequentially disposed source lines. Each pixel unit includes pixels. For each pixel unit, the pixels between any set of the two adjacent gate lines are coupled to different gate lines and different source lines. For each pixel unit, the pixels between one set of the two adjacent source lines are coupled to the same gate line and different source lines, and the pixels between the other set of the two adjacent source lines are coupled to different gate lines and different source lines.Type: ApplicationFiled: May 26, 2011Publication date: November 29, 2012Applicant: CHIMEI INNOLUX CORPORATIONInventors: Hirofumi WATSUDA, Norio OKU
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Patent number: 8319918Abstract: A multi-domain vertical alignment liquid crystal display that does not require physical features on the substrate (such as protrusions and ITO slits) is disclosed. Each pixel of the MVALCD is subdivided into color components, which are further divided into color dots. The polarity of the color dots are arranged so that fringe fields from adjacent color dots causes multiple liquid crystal domains in each color dot. Specifically, the color dots of a pixel are arranged so that each color dot of a first polarity has four neighboring pixels of a second polarity. Thus, a checkerboard pattern of polarities is formed. Furthermore, the checkerboard pattern is extended across multiple pixels in the MVALCD. In addition, many display unit include multiple pixel designs to improve color distribution or electrical distribution.Type: GrantFiled: October 17, 2011Date of Patent: November 27, 2012Assignees: Kyoritsu Optronics Co., Ltd.Inventor: Hiap L. Ong
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Publication number: 20120293736Abstract: A display apparatus includes a plurality of pixels. At least one of the pixels includes a gate line, a data line, a first storage line spaced apart from the gate line, a second storage line spaced apart from the gate line and the first storage line, first and second switching devices electrically connected to the gate line and the data line, a first liquid crystal capacitor connected to the first switching device and including the liquid crystal layer as its dielectric substance, a second liquid crystal capacitor connected to the second switching device and including the liquid crystal layer as its dielectric substance, a first storage capacitor connected between the first switching device and one of the first and second storage lines, and a second storage capacitor connected between the second switching device and a remaining one of the first and second storage lines.Type: ApplicationFiled: November 28, 2011Publication date: November 22, 2012Inventors: KWANG-CHUL JUNG, Chongchul Chai, Kyoungju Shin, Joon-Chul Goh, Young-Soo Yoon
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Patent number: 8300165Abstract: A liquid crystal display includes a pixel group including a first pixel having a first thin film transistor and a second pixel having a second thin film transistor. A gate line provides a driving signal to a gate of the first and second thin film transistors. A first storage capacitor line is arranged substantially parallel with the gate line and adjacent to one side of the first pixel. A second storage capacitor line is arranged substantially parallel with the gate line and adjacent to an opposite side of the first pixel. The liquid crystal display includes a first storage capacitor arranged in the first pixel and connected between the first thin film transistor and the first storage capacitor line. A second storage capacitor is arranged in the second pixel and is connected between the second thin film transistor and the second storage capacitor line.Type: GrantFiled: August 22, 2008Date of Patent: October 30, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Ryoichi Yokoyama, Michiru Senda
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Publication number: 20120268675Abstract: A multi-domain vertical alignment liquid crystal display using fringe field amplification is disclosed. Each pixel is subdivided into color dots. Further more each pixel contains extra-planar fringe field amplifiers that separate the color dots of a pixel. The voltage polarity of the color dots and extra-planar fringe field amplifiers are arranged so that fringe fields in each color dot causes multiple liquid crystal domains in each color dot. Specifically, the color dots and the extra-planar fringe field amplifiers are arranged so that neighboring polarized elements have opposite polarities. The performance of the display is further enhanced by using a sliced common electrode having common electrode slices over the color dots.Type: ApplicationFiled: December 30, 2011Publication date: October 25, 2012Inventors: Hiap L. Ong, Juishu Chou
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Patent number: 8294651Abstract: A liquid crystal display (LCD) is provided. The LCD includes a display panel and a voltage supply device (VSD). The display panel includes a plurality of scan lines, a plurality of data lines disposed substantially perpendicularly with the scan lines, and a plurality of pixels. The pixels are respectively electrically connected with the corresponding data line and the corresponding scan line, and are arranged in an array. Each of the pixels includes a common line and a compensation line, wherein the common line is located in the transparent area to receive a common voltage, and the compensation line is located in the reflection area to receive a stable voltage. The VSD is coupled to the compensation line of each of the pixels for continuously and correspondingly providing the stable voltage to the compensation line of each of the pixels.Type: GrantFiled: July 24, 2009Date of Patent: October 23, 2012Assignee: Au Optronics CorporationInventors: Ching-Huan Lin, Hsiang-Lin Lin, Shih-Chia Hsu, Sheng-Chao Liu, Kuang-Hsiang Liu
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Patent number: 8289459Abstract: In accordance with one embodiment of the present invention, a first pixel of an LCD panel is driven via a first scan line to a first pixel voltage during a first scan period and to a second pixel voltage during a second scan period. Also, a second pixel is driven via the first scan line and a second scan line to the first pixel voltage during the first scan period.Type: GrantFiled: February 1, 2008Date of Patent: October 16, 2012Assignee: Chimei Innolux CorporationInventors: Chang-Hao Yang, Yung Shun Yang, Chung Kuang Wei
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Patent number: 8264637Abstract: Example embodiments relate to a photonic crystal optical filter, a reflective color filter using the photonic crystal optical filter, a display apparatus using the reflective color filter, and a method of manufacturing the reflective color filter. The photonic crystal optical filter may include a transparent substrate; a barrier layer formed on the transparent substrate; and a photonic crystal layer formed on the barrier layer. The photonic crystal layer may have a structure in which a first material having a relatively high refractive index and a second material having a relatively low refractive index are periodically arranged so as to reflect light having a wavelength band corresponding to a photonic band gap.Type: GrantFiled: August 12, 2009Date of Patent: September 11, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Eun-hyoung Cho, Jin-seung Sohn, Seock-hwan Kang, Hae-sung Kim, Xianyu Wenxu
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Patent number: 8264627Abstract: A liquid crystal display panel including a data line, a first, a second and a third scan line, a first, a second and a third switch, and a first, a second and a third pixel electrode is provided. These scan lines are sequentially disposed next to each other. Each switch has a control end, an input end and an output end. These control ends are respectively coupled to these scan lines. These input ends are coupled to the data line. These output ends are respectively coupled to the pixel electrodes. A first extending electrode of the first pixel electrode is near the second pixel electrode, a second extending electrode of the second pixel electrode is near the third pixel electrode, and a third extending electrode of the third pixel electrode is near the first extending electrode.Type: GrantFiled: November 26, 2008Date of Patent: September 11, 2012Assignee: Wintek CorporationInventors: I-Fang Wang, Wen-Chun Wang
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Patent number: 8253897Abstract: A multi-domain vertical alignment liquid crystal display that does not require physical features on the substrate (such as protrusions and ITO slits) is disclosed. Each pixel of the MVA LCD is subdivided into color components, which are further divided into color dots. The polarities of the color dots are arranged so that fringe fields in each color dots causes multiple liquid crystal domains in each color dot. Specifically, the color dots of a pixel are arranged so that each color dot of a first polarity has four neighboring pixels of a second polarity. Thus, a checkerboard pattern of polarities is formed. Furthermore, the checkerboard pattern is extended across multiple pixels in the MVA LCD. In addition, many display unit include multiple pixel designs to improve color distribution or electrical distribution. Furthermore, many display units interleave the pixels.Type: GrantFiled: July 9, 2011Date of Patent: August 28, 2012Assignees: Kyoritsu Optronics Co., LtdInventor: Hiap L. Ong
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Patent number: 8248345Abstract: A display apparatus and a method for displaying an image are provided. The display apparatus includes a pixel array, a polarity (POL) signal generator, and a drive circuit. The pixel array which includes a plurality of pixels is configured to display a plurality of frames of the image. The POL signal generator is configured to generate a plurality of POL signals. The drive circuit is configured to adjust the frames of the image according to the POL signals, and output the frames to the pixel array.Type: GrantFiled: April 14, 2008Date of Patent: August 21, 2012Assignee: AU Optronics Corp.Inventors: Ken-Ming Chen, Chi-Mao Hung
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Patent number: 8223284Abstract: A liquid crystal device 10 of the present invention includes conductive films 81a, 81b for storage capacitors, i.e., a first conductive film 81a and a second conductive film 81b, which are connected to two adjacent pixel electrodes 44a, 44b, respectively, via contact sections 70a, 70b formed through a second insulating film 62. The part of a storage capacitor 83 located below the conductive films 81a, 81b is divided into a first capacitor line 83a arranged below the first conductive film 81a and a second capacitor line 83b arranged below the second conductive film 81b.Type: GrantFiled: July 29, 2008Date of Patent: July 17, 2012Assignee: Sharp Kabushiki KaishaInventors: Akane Sugisaka, Fumikazu Shimoshikiryoh
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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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Patent number: 8212950Abstract: A liquid crystal display panel includes a first and second substrates which are opposite, and further includes scanning lines, data lines, pixel electrodes and switches, intersection of two adjacent scanning lines and data lines forming a pixel region. The pixel electrodes are disposed in pixel regions. Each pixel electrode crosses one data line and includes a first and second sub-pixel electrodes which are electrically connected to each other; the first and second sub-pixel electrodes are arranged on two sides of the data line; there is a gap between the first and second sub-pixel electrodes, and the data line is configured in the gap. A problem that conventional liquid crystal display panel has a complex manufacture process, leaks light at a dark state and has a low penetrability can be solved, thereby improving yield of the products.Type: GrantFiled: March 25, 2010Date of Patent: July 3, 2012Assignee: Infovision Optoelectronics (Kunshan) Co., Ltd.Inventors: Yanbing Qiao, Te-Chen Chung, Liufei Zhou
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Patent number: 8208081Abstract: Each pixel includes first and second subpixels and two switching elements provided for those subpixels. Each subpixel includes a liquid crystal capacitor and a storage capacitor. The storage capacitor counter electrodes of the first and second subpixels are electrically independent. A storage capacitor counter voltage applied to each storage capacitor counter electrode by way of its associated storage capacitor line has a first period (A) with a first waveform during one vertical scanning period. The first waveform oscillates between multiple voltage levels in a first cycle time (PA) that is an integral number of times (and at least four times) as long as one horizontal scanning period (H). Each of the voltage levels has a flat portion with a duration TP. While the two switching elements are ON, a display signal voltage is applied to the respective subpixel electrodes and respective storage capacitor electrodes of the first and second subpixels.Type: GrantFiled: August 13, 2007Date of Patent: June 26, 2012Assignee: Sharp Kabushiki KaishaInventors: Masae Kitayama, Fumikazu Shimoshikiryoh
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Publication number: 20120140135Abstract: A liquid crystal display module (1) includes a liquid crystal display panel (2) to which a voltage whose polarity is changed in a predetermined cycle for display driving is applied, and an optical sheet (14). A conductive member (18) is disposed between the liquid crystal display panel (2) and the optical sheet (14). The conductive member (18) is connected to a grounding portion. Therefore, even if a voltage whose polarity is reversed is applied to a common electrode of the liquid crystal display panel (2), the effect of an electric field variation on the optical sheet can be reduced.Type: ApplicationFiled: April 8, 2010Publication date: June 7, 2012Applicant: SHARP KABUSHIKI KAISHAInventors: Shinsuke Yokonuma, Kazunori Minoura
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Patent number: 8174543Abstract: A display device driving circuit includes: a grayscale signal output circuit, grayscale signal lines, a grayscale voltage output circuit, grayscale voltage lines, a digital-analog conversion circuit, a first to third switches. The grayscale signal output circuit outputs complementary signals as a digital grayscale signal. The grayscale signal lines receive the complementary signals. The grayscale voltage output circuit outputs analog grayscale voltages. The grayscale voltage lines receive the analog grayscale voltages. The digital-analog conversion circuit selects and outputs one of the analog grayscale voltages in response to the complementary signals. The first switch shuts off a first connection path between the grayscale signal output circuit and the digital-analog conversion circuit. The second switch shuts off a second connection path between the grayscale voltage output circuit and the digital-analog conversion circuit.Type: GrantFiled: July 8, 2008Date of Patent: May 8, 2012Assignee: Renesas Electronics CorporationInventor: Koushirou Yanai
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Publication number: 20120105494Abstract: A liquid crystal display (LCD) panel is disclosed. The LCD panel includes a plurality of pixels arranged in rows and columns, a first sub gate-line coupled to first row-pixels that are adjacent to a lower side of the first sub gate-line, a second sub gate-line coupled to second row-pixels that are adjacent to an upper side of the second sub gate-line, a plurality of gate-lines between the first sub gate-line and the second sub gate-line, a plurality of even data-lines coupled to first column-pixels that are adjacent to the even data-lines, and a plurality of odd data-lines coupled to second column-pixels that are adjacent to the odd data-lines. Here, each gate-line of the plurality of gate lines is coupled to first row-pixels that are adjacent to a lower side of the gate-line and second row-pixels that are adjacent to an upper side of the gate-line.Type: ApplicationFiled: May 9, 2011Publication date: May 3, 2012Inventors: Seung-Kyu Lee, Dong-Hoon Lee, Chul-Ho Kim, Jin-Woo Park
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Patent number: 8169556Abstract: Disclosed is an LCD comprising a plurality of data lines extending in a first direction, a plurality of gate lines extending in a second direction defining with the plurality of data lines a plurality of pixel areas arranged in a matrix configuration and supplying a gate signal to at least two rows of the pixel areas simultaneously. Thin film transistors are connected to the plurality of gate lines and the plurality of data lines. Also disclosed is a driving method for an LCD including a thin film transistor substrate including pixel areas arranged in a matrix form with a gate line extending in a first direction and a data line extending in a second direction, along with a backlight providing the TFT substrate with light of three primary colors. In the method, the three primary colors are sequentially provided in one frame period and at least two rows of pixel areas and simultaneously provided with a common gate signal.Type: GrantFiled: August 28, 2009Date of Patent: May 1, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Joon-hak Oh, Cheol-woo Park, Chong-chul Chai
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Patent number: 8169555Abstract: A liquid crystal display device includes a first substrate having a first electrode and a second electrode, a second substrate, a liquid crystal interposed between the first substrate and the second substrate, pixels each having a transmissive portion for performing a transmissive display and a reflective portion for performing a reflective display, and a driving circuit driving the pixels. Here, a third electrode is disposed in the second substrate opposed to the first substrate with the liquid crystal interposed therebetween. The first electrode is disposed in the transmissive portion along with the second electrode and is also disposed in the reflective portion along with the third electrode. The driving circuit is provided to independently apply potentials to the second electrode and the third electrode.Type: GrantFiled: September 18, 2007Date of Patent: May 1, 2012Assignee: Sony CorporationInventors: Masashi Mitsui, Norio Koma, Tomohide Onogi, Yasuo Segawa
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Publication number: 20120099040Abstract: Disclosed is a segmented liquid crystal modulator panel apparatus and method for driving the same that overcomes electrical cross-talk associated with capacitive coupling to a common electrode. Each modulator segment may be divided into subsegments and driven substantially synchronously and out-of-phase. The field-polarity insensitive LC materials yield a substantially identical optical response for each subsegment, while allowing current on the common electrode to flow between the subsegments, thereby reducing power consumption and decreasing response times.Type: ApplicationFiled: October 22, 2011Publication date: April 26, 2012Applicant: REALD INC.Inventors: Michael G. Robinson, Terry W. Norton
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Patent number: 8115878Abstract: A TFT array substrate includes a plurality of scanning lines, a plurality of data lines and a plurality of pixel regions. Each pixel region includes a pixel electrode, a first TFT, a pull alignment electrode, a second TFT, a first and second push alignment electrodes, so that when a voltage is applied to the TFT array substrate, a transverse pull electric field is formed between the pixel electrode and the pull alignment electrode, and transverse push electric fields are formed respectively between the first push alignment electrode and the pixel electrode and between the second push alignment electrode and the pixel electrode. Accordingly, liquid crystal molecules of the TFT array substrate can respond quickly and it is not necessary to configure bumps on a color filter substrate, thereby improving contrast ratio, simplifying manufacture process and reducing costs.Type: GrantFiled: April 28, 2010Date of Patent: February 14, 2012Assignee: Infovision Optoelectronics (Kunshan) Co., Ltd.Inventors: Te-Chen Chung, Xia Huang, Yanbing Qiao, Liufei Zhou, Yu-Wen Chiu
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Patent number: 8115719Abstract: Provided is an electro-optical device including: pixel electrodes provided in intersections of gate lines and data lines; counter electrodes provided to face the pixel electrodes with an electro-optical material interposed therebetween; and storage capacitors each of which one end is connected to each of the pixel electrodes, wherein, if data line signals supplied to the pixel electrodes via the data lines correspond to writing of a positive polarity with respect to the potential of the counter electrodes, the potential of the other end of each of the storage capacitors is changed to a high potential side after the data line signals are written and, if the data line signals correspond to writing of a negative polarity with respect to the potential of the counter electrodes, the potential of the other end of each of the storage capacitors is held at a constant level before and after the data line signals are written.Type: GrantFiled: April 23, 2009Date of Patent: February 14, 2012Assignee: Sony CorporationInventor: Shin Fujita
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Publication number: 20120033147Abstract: A multi-domain vertical alignment liquid crystal display that does not require physical features on the substrate (such as protrusions and ITO slits) is disclosed. Each pixel of the MVALCD is subdivided into color components, which are further divided into color dots. The polarity of the color dots are arranged so that fringe fields from adjacent color dots causes multiple liquid crystal domains in each color dot. Specifically, the color dots of a pixel are arranged so that each color dot of a first polarity has four neighboring pixels of a second polarity. Thus, a checkerboard pattern of polarities is formed. Furthermore, the checkerboard pattern is extended across multiple pixels in the MVALCD. In addition, many display unit include multiple pixel designs to improve color distribution or electrical distribution.Type: ApplicationFiled: October 17, 2011Publication date: February 9, 2012Applicants: Kyoritsu Optronics Co., Ltd.Inventor: Hiap L. Ong
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Publication number: 20120032934Abstract: Voltage consumption during flashing of a frame is suppressed. Under a state in which an image is written and held, when a waveform of low voltage at low frequency is applied to the whole surface of a bistable liquid crystal display panel, the liquid crystal molecules are inclined to some extent, if not to the state vertical to a substrate, and the frame displays gray close to white. After that, when the voltage application is stopped, the image displayed before the application appears because the orientation state of the bistable liquid crystal display panel is not broken. By utilizing this phenomenon, a state of applying the waveform of low voltage at low frequency and a non-application state are repeated at a given time interval, and hence the frame can be flashed with low power consumption.Type: ApplicationFiled: April 27, 2010Publication date: February 9, 2012Inventors: Masafumi Hoshino, Shinichi Nogawa, Hisayuki Hirayama
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Patent number: 8107026Abstract: A multi-domain vertical alignment liquid crystal display that does not require physical features on the substrate (such as protrusions and ITO slits) is disclosed. Each pixel of the MVA LCD is subdivided into color components, which are further divided into color dots. The drive component areas, i.e. where switching elements and storage capacitors are located, are converted to associated dots by adding an electrode that can be electrically biased. The voltage polarity of the color dots and associated dots are arranged so that fringe fields in each color dot causes multiple liquid crystal domains in each color dot. Specifically, the color dots and associated dots of a pixel are arranged so that associated dots have opposite polarity as compared to neighboring color dots.Type: GrantFiled: May 30, 2008Date of Patent: January 31, 2012Assignee: Hiap L. Ong and Kyoritsu Optronics, Co., LtdInventor: Hiap L. Ong
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Patent number: 8107031Abstract: A multi-domain vertical alignment liquid crystal display that does not require physical features on the substrate (such as protrusions and ITO slits) is disclosed. Each pixel of the MVA LCD is subdivided into color components, which are further divided into color dots. The drive component areas, i.e. where switching elements and storage capacitors are located, are converted to associated dots by adding an electrode that can be electrically biased. The voltage polarity of the color dots and associated dots are arranged so that fringe fields in each color dot causes multiple liquid crystal domains in each color dot. Specifically, the color dots and associated dots of a pixel are arranged so that associated dots have opposite polarity as compared to neighboring color dots.Type: GrantFiled: May 30, 2008Date of Patent: January 31, 2012Assignees: Kyoritsu Optronics Co., Ltd.Inventor: Hiap L. Ong
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Patent number: 8107030Abstract: A multi-domain vertical alignment liquid crystal display that does not require physical features on the substrate (such as protrusions and ITO slits) is disclosed. Each pixel of the MVA LCD is subdivided into color components, which are further divided into color dots. The drive component areas, i.e. where switching elements and storage capacitors are located, are converted to associated dots by adding an electrode that can be electrically biased. The voltage polarity of the color dots and associated dots are arranged so that fringe fields in each color dot causes multiple liquid crystal domains in each color dot. Specifically, the color dots and associated dots of a pixel are arranged so that associated dots have opposite polarity as compared to neighboring color dots.Type: GrantFiled: May 21, 2007Date of Patent: January 31, 2012Assignees: Kyoritsu Optronics Co., Ltd.Inventor: Hiap L. Ong
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Patent number: 8094255Abstract: A multi-domain vertical alignment liquid crystal display that does not require physical features on the substrate (such as protrusions and ITO slits) is disclosed. Each pixel of the MVA LCD is subdivided into color components, which are further divided into color dots. The drive component areas, i.e. where switching elements and storage capacitors are located, are converted to associated dots by adding an electrode that can be electrically biased. The voltage polarity of the color dots and associated dots are arranged so that fringe fields in each color dot causes multiple liquid crystal domains in each color dot. Specifically, the color dots and associated dots of a pixel are arranged so that associated dots have opposite polarity as compared to neighboring color dots.Type: GrantFiled: May 30, 2008Date of Patent: January 10, 2012Assignee: Hiap L. Ong and Kyoritsu Optronics Co., Ltd.Inventor: Hiap L. Ong
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Pixels Having Polarity Extension REgions For Multi-Domain Vertical Alignment Liquid Crystal Displays
Publication number: 20120002126Abstract: A multi-domain vertical alignment liquid crystal display that does not require physical features on the substrate (such as protrusions and ITO slits) is disclosed. Each pixel of the MVA LCD is subdivided into color components, which are further divided into color dots. The color components include polarized extension regions that extend between color dots of neighboring color components (and neighboring pixels). The voltage polarity of the color dots and polarized extension regions are arranged so that fringe fields in each color dot causes multiple liquid crystal domains in each color dot. Specifically, the color dots and polarity extension regions of the display are arranged so that neighboring polarized elements have opposite polarities.Type: ApplicationFiled: September 12, 2011Publication date: January 5, 2012Applicant: Hiap L. Ong and Kyoritsu Optronics Co., Ltd.Inventor: Hiap L. Ong -
Patent number: 8089570Abstract: A liquid crystal display according to an exemplary embodiment of the present invention includes a first and second substrate facing each other, a liquid crystal layer interposed between the substrates, a plurality of gate lines disposed on the first substrate, configured to transmit a gate signal, at least one data line disposed on the first substrate, configured to transmit a data signal, a plurality of power supplying lines disposed on the first substrate, a plurality of switching elements variously connected to the gate lines, data lines, and power supplying lines, a plurality of pixel electrodes connected to the switching elements, wherein corresponding pixel electrodes are separated from each other.Type: GrantFiled: March 29, 2010Date of Patent: January 3, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Sung-Woon Kim, Hee-Seop Kim, Hyang-Yul Kim, Joo-Nyung Jang, Soon-Joon Rho, Hwa-Sung Woo, Cheol Shin, Dong-Chul Shin
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Patent number: 8049827Abstract: A thin film transistor array substrate includes an insulating substrate, a plurality of scan lines, an insulating layer, a plurality of data lines, and a plurality of pixels arranged in an array of rows and columns. The pixels in each row are aligned in a row direction, the pixels in each column are aligned in a column direction, and the pixels are separated from each other by the scan lines and the data lines. Each pixel includes a thin film transistor and a pixel electrode. The pixel electrode has at least one opening that extends from the periphery to the inside of the pixel electrode and at least one extension part that extends in the row direction into an opening of a neighboring pixel electrode in the same row. Each of the scan lines alternately controls one of the pixel electrodes in a first row and one of the pixel electrodes in a second row immediately adjacent to the first row.Type: GrantFiled: December 12, 2008Date of Patent: November 1, 2011Assignee: Wintek CorporationInventors: Wen-Chun Wang, Chin-Chang Liu, I Fang Wang
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Publication number: 20110255020Abstract: A method of driving pixels of a liquid crystal display, a pixel driving device, and a liquid crystal display having the same are provided. The liquid crystal display includes a liquid crystal panel and a pixel driving device, wherein the pixel driving device selectively outputs driving signals having different polarity permutations based on the structure of the display units in the liquid crystal panel.Type: ApplicationFiled: April 15, 2011Publication date: October 20, 2011Inventors: Chun-Lin Yu, Kuan-Hung Liu, Wen-Fa Hsu
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Patent number: 8040472Abstract: A multi-domain vertical alignment liquid crystal display that does not require physical features on the substrate (such as protrusions and ITO slits) is disclosed. Each pixel of the MVALCD is subdivided into color components, which are further divided into color dots. The polarity of the color dots are arranged so that fringe fields from adjacent color dots causes multiple liquid crystal domains in each color dot. Specifically, the color dots of a pixel are arranged so that each color dot of a first polarity has four neighboring pixels of a second polarity. Thus, a checkerboard pattern of polarities is formed. Furthermore, the checkerboard pattern is extended across multiple pixels in the MVALCD. In addition, many display unit include multiple pixel designs to improve color distribution or electrical distribution.Type: GrantFiled: June 25, 2009Date of Patent: October 18, 2011Assignee: Hiap L. Ong and Kyoritsu Optronics, Co., Ltd.Inventor: Hiap L. Ong
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Patent number: 8035634Abstract: A driving circuit includes a plurality of scanning lines, a plurality of data lines, a plurality of capacitor lines, pixels, a scanning line driving circuit, a capacitor line driving circuit, a first capacitive signal output circuit, and a data line driving circuit. Each of the pixels includes a pixel switching element, a pixel capacitor, and a storage capacitor. The capacitor line driving circuit supplies a first capacitive signal to the capacitor line when the one scanning line is selected, and changes a voltage value of the first capacitive signal when a scanning line, located a predetermined number of scanning lines away from the one scanning line, is selected. The first capacitive signal output circuit adjusts and outputs a voltage of the first capacitive signal when the one scanning line is selected. The data line driving circuit supplies the pixels with data signals of voltages corresponding to gray scale levels.Type: GrantFiled: August 6, 2007Date of Patent: October 11, 2011Assignee: Sony CorporationInventor: Katsunori Yamazaki
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Patent number: 8031300Abstract: Provided is a liquid crystal device including: a plurality of data lines and a plurality of scanning lines which cross each other; switching elements which are provided in correspondence with intersections between the data lines and the scanning lines; pixel electrodes connected to the switching elements; pixels configured in correspondence with the pixel electrodes; an image display region configured by the plurality of pixels; a first substrate having at least the switching elements; a second substrate which faces the first substrate; and liquid crystal interposed between the first substrate and the second substrate, wherein light incident from the first substrate is modulated by the liquid crystal, a light-shielding film is provided on a light incident side of at least the switching elements of the first substrate, and at least a portion corresponding to the image display region of the second substrate includes only a transparent layer which transmits light incident to the liquid crystal.Type: GrantFiled: December 22, 2006Date of Patent: October 4, 2011Assignee: Seiko Epson CorporationInventor: Shinji Kamijima
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Patent number: 8031278Abstract: A multi-domain vertical alignment liquid crystal display that does not require physical features on the substrate (such as protrusions and ITO slits) is disclosed. Each pixel of the MVA LCD is subdivided into color components, which are further divided into color dots. The drive component areas, i.e. where switching elements and storage capacitors are located, are converted to associated dots by adding an electrode that can be electrically biased. The voltage polarity of the color dots and associated dots are arranged so that fringe fields in each color dot causes multiple liquid crystal domains in each color dot. Specifically, the color dots and associated dots of a pixel are arranged so that associated dots have opposite polarity as compared to neighboring color dots.Type: GrantFiled: May 30, 2008Date of Patent: October 4, 2011Assignee: Hiap L. Ong and Kyoritsu Optronics Co., Ltd.Inventor: Hiap L. Ong
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Patent number: 8027006Abstract: A multi-domain vertical alignment liquid crystal display that does not require physical features on the substrate (such as protrusions and ITO slits) is disclosed. Each pixel of the MVALCD is subdivided into color components, which are further divided into color dots. The polarity of the color dots are arranged so that fringe fields from adjacent color dots causes multiple liquid crystal domains in each color dot. Specifically, the color dots of a pixel are arranged so that each color dot of a first polarity has four neighboring pixels of a second polarity. Thus, a checkerboard pattern of polarities is formed. Furthermore, the checkerboard pattern is extended across multiple pixels in the MVALCD. In addition, many display unit include multiple pixel designs to improve color distribution or electrical distribution.Type: GrantFiled: June 26, 2009Date of Patent: September 27, 2011Assignees: Kyoritsu Optronics Inc., Ltd.Inventor: Hiap L. Ong
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Patent number: 8026988Abstract: A multi-domain vertical alignment liquid crystal display that does not require physical features on the substrate (such as protrusions and ITO slits) is disclosed. Each pixel of the MVA LCD is subdivided into color components, which are further divided into color dots. The drive component areas, i.e. where switching elements and storage capacitors are located, are converted to associated dots by adding an electrode that can be electrically biased. The voltage polarity of the color dots and associated dots are arranged so that fringe fields in each color dot causes multiple liquid crystal domains in each color dot. Specifically, the color dots and associated dots of a pixel are arranged so that associated dots have opposite polarity as compared to neighboring color dots.Type: GrantFiled: May 30, 2008Date of Patent: September 27, 2011Assignee: Hiap L. Ong and Kyoritsu Optronics, Co., Ltd.Inventor: Hiap L. Ong
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Pixels having polarity extension regions for multi-domain vertical alignment liquid crystal displays
Patent number: 8018537Abstract: A multi-domain vertical alignment liquid crystal display that does not require physical features on the substrate (such as protrusions and ITO slits) is disclosed. Each pixel of the MVA LCD is subdivided into color components, which are further divided into color dots. The color components include polarized extension regions that extend between color dots of neighboring color components (and neighboring pixels). The voltage polarity of the color dots and polarized extension regions are arranged so that fringe fields in each color dot causes multiple liquid crystal domains in each color dot. Specifically, the color dots and polarity extension regions of the display are arranged so that neighboring polarized elements have opposite polarities.Type: GrantFiled: January 23, 2008Date of Patent: September 13, 2011Assignees: Kyoritsu Optronics Co., Ltd.Inventor: Hiap L. Ong -
Publication number: 20110193842Abstract: A liquid crystal display (LCD) and methods of driving same. In one embodiment, the LCD) includes a plurality of gate lines, {Gn}, spatially arranged along a row direction; a plurality of data lines, {Dm}, spatially arranged along a column direction perpendicular to the row direction, and a plurality of pixels, {Pn,m}, spatially arranged in the form of a matrix, where m=1, 2, . . . , M, n=1, 2, . . . , N, and M and N are positive integers.Type: ApplicationFiled: February 11, 2010Publication date: August 11, 2011Applicant: AU OPTRONICS CORPORATIONInventors: Yu-Cheng Tsai, Kuo-Hsien Lee, Chao-Liang Lu, Jing-Tin Kuo
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Patent number: 7986376Abstract: It is possible to realize a driver circuit which exhibits low power consumption and high image quality in a liquid crystal display device used in miniaturized portable equipment. In a liquid crystal display device which includes a liquid crystal display element and a liquid crystal driver circuit, the liquid crystal driver circuit is mounted on one side of a liquid crystal display panel. The liquid crystal driver circuit can output counter electrode voltages of two systems and hence, the liquid crystal driver circuit can select a first mode in which the first counter voltage and the second counter voltage have the opposite polarities from each other and a second mode in which the first counter voltage and the second counter voltage have the same polarity. Due to such constitution, while driving the liquid crystal display device in the first mode, the second mode is selected depending on a video signal thus realizing power saving.Type: GrantFiled: November 14, 2008Date of Patent: July 26, 2011Assignee: Hitachi Displays, Ltd.Inventors: Taku Saito, Shuuichirou Matsumoto
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Patent number: 7982219Abstract: A pixel array includes scan lines, data lines, and pixels. Each pixel arranged in the nth row includes a first sub-pixel, a second sub-pixel, and a third sub-pixel. In the first sub-pixel, a first gate and a first drain of a first transistor are connected to the (n?1)th scan line and a first pixel electrode, respectively. In the second sub-pixel, a second gate of a second transistor is connected to the nth scan line, and a second drain is connected to a second pixel electrode and a first source of the first transistor. In the third sub-pixel, a third gate of a third transistor is connected to the (n+1)th scan line, a third drain is connected to a third pixel electrode and a second source of the second transistor, and a third source is connected to one of the data lines.Type: GrantFiled: October 8, 2009Date of Patent: July 19, 2011Assignee: Au Optronics CorporationInventors: Jing-Tin Kuo, Kuo-Hsien Lee
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Publication number: 20110169799Abstract: A liquid crystal display includes a liquid crystal layer disposed between first and second substrates. A gate line transmits gate signals; a first data line transmits data voltages; a first voltage line alternately transmits a first voltage and a second voltage that is than greater than the first voltage; a first switching element is connected to the gate line and the first data line; a second switching element is connected to the gate line and the first voltage line; a first pixel electrode is connected to the first switching element; and a second pixel electrode is connected to the second switching element. The first pixel electrode and the second pixel electrode form a liquid crystal capacitor along with the liquid crystal layer, and at least one of the first voltage and the second voltage is variable.Type: ApplicationFiled: July 19, 2010Publication date: July 14, 2011Applicant: Samsung Electronics Co., Ltd.Inventors: Hyun-Sik YOON, Hee-Bum Park, Seung-Soo Baek, Dong-Gyu Kim, Gwon-Heon Ryu
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Patent number: 7978271Abstract: A multi-domain liquid crystal display includes a first and a second transparent substrates, a liquid crystal layer interposed between them, a common electrode, a first and a second metal layers, a first and a second dielectric layer, multiple pixel electrodes and multiple auxiliary electrodes. The second metal layer is formed on the first dielectric layer, and the second dielectric layer is formed on the first dielectric layer and covers the second metal layer. The pixel electrodes are formed on the second dielectric layer, each of the pixel electrodes having at least one opening to divide itself into a plurality of sections. The auxiliary electrodes are formed on the second dielectric layer, and each of the auxiliary electrodes extends into the opening of the pixel electrode. The second metal layer is hollowed out at a position overlapping the auxiliary electrode to form at least one opening.Type: GrantFiled: June 5, 2008Date of Patent: July 12, 2011Assignee: Wintek CorporationInventors: Wen-Chun Wang, Chin-Chang Liu