Interdigited (comb-shaped) Electrodes Patents (Class 349/141)
  • Patent number: 10809579
    Abstract: A liquid crystal display includes: a first substrate; a pixel electrode on the first substrate and including a first subpixel electrode and a second subpixel electrode which are separated from each other; a second substrate facing the first substrate; a common electrode on the second substrate; and a liquid crystal layer between the first substrate and the second substrate, in which the first subpixel electrode includes a first plate-shaped portion and a plurality of first branch electrodes extended from the first plate-shaped portion, the second subpixel electrode includes a second plate-shaped portion surrounds the first branch electrodes and a plurality of second branch electrodes extended from the second plate-shaped portion, and a difference between a first voltage applied to the first subpixel electrode and a common voltage applied to the common electrode is larger than a difference between a second voltage applied to the second subpixel electrode and the common voltage.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: October 20, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hak Sun Chang, Cheol Shin, Jae-Soo Jang, Ki Chul Shin, Jang Wi Ryu, Ho Kil Oh, Ka Eun Kim, Se Hyun Lee, Hyo Ju Jung
  • Patent number: 10802353
    Abstract: A liquid crystal display device according to FFS technology is provided, which sufficiently provides a common electrode with common electric potential and improves an aperture ratio of pixels. A pixel electrode is formed of a first layer transparent electrode. A common electrode made of a second layer transparent electrode is formed above the pixel electrode interposing an insulation film between them. The common electrode in an upper layer is provided with a plurality of slits. The common electrode extends over all the pixels in a display region. An end of the common electrode is disposed on a periphery of the display region and connected with a peripheral common electric potential line that provides a common electric potential Vcom. There is provided neither an auxiliary common electrode line nor a pad electrode, both of which are provided in a liquid crystal display device according to a conventional art.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: October 13, 2020
    Assignee: Japan Display Inc.
    Inventors: Tomohide Onogi, Yasuo Segawa
  • Patent number: 10802320
    Abstract: The present display device includes a liquid crystal panel having a liquid crystal layer between an array substrate and a facing substrate. The array substrate has an electrode layer having an upper electrode and a lower electrode facing each other in a Z direction, and an opening including a plurality of slits extending in an X direction is formed in the upper electrode and the lower electrode. The liquid crystal layer is provided on the electrode layer, liquid crystal molecules in vicinity regions on one side and the other side of the opening which face each other in a width direction of each slit are oriented as rotating in reverse to each other, and the facing substrate has a conductive layer.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: October 13, 2020
    Assignee: Japan Display Inc.
    Inventor: Toshiharu Matsushima
  • Patent number: 10802329
    Abstract: A color filter, a display apparatus, and a method for preparing the color filter. The color filter comprises: a substrate, black matrices formed on the substrate; color layers formed on the substrate, wherein the color layers comprise red pixel layers (R), green pixel layers (G), blue pixel layers (B), and transparent pixel layers (W); a planarization layer (OC) formed above the color layers and the black matrices; and columnar layers (PS) formed on the planarization layer (OC) and located above the black matrices. The transparent pixel layers (W) are covered in the red pixel layers (R), the green pixel layers (G) and the blue pixel layers (B) by the red pixel layers (R), the green pixel layers (G) and the blue pixel layers (B), respectively.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: October 13, 2020
    Assignees: TUNGHSU (KUNSHAN) DISPLAY MATERIAL CO., LTD., TUNGHSU OPTOELECTRONICS TECHNOLOGY CO., LTD., TUNGHSU GROUP CO., LTD.
    Inventor: Yihau Shiau
  • Patent number: 10795218
    Abstract: A display substrate may include a base substrate having a plurality of pixel areas; and a pixel electrode in each of the pixel areas. The pixel electrode may include a vertical stem portion extending in a first direction; a horizontal stem portion extending from the vertical stem portion in a second direction intersecting the first direction; a plurality of main branch portions extending from at least one of the vertical stem portion and the horizontal stem portion in an inclined manner; and a sub-branch portion extending from at least one of the plurality of main branch portions.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: October 6, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kyusu Ahn, Haeryeong Park, Dongil Yoo
  • Patent number: 10784329
    Abstract: A display apparatus includes: a thin-film transistor including a source electrode, a drain electrode, and a gate electrode; a data line in a layer different from the source electrode, the drain electrode, and the gate electrode, wherein the data line is configured to transmit a data signal; and a shield layer between the data line and a component of the thin-film transistor.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: September 22, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yangwan Kim, Wonkyu Kwak, Jaedu Noh, Jaeyong Lee
  • Patent number: 10782556
    Abstract: A display device in which ambient light reflections, for example, from IPS or FFS type displays are reduced by a circular polariser (e.g., linear polariser combined with external quarter waveplate) to make the light circular polarized, as it traverses the multiple reflective layers between the polariser and LC layer, and then an internal quarter waveplate converts the light back to linear polarisation before it enters the LC, so the display can operate as normal, while the circular polariser absorbs unwanted reflections of ambient light from within the display.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: September 22, 2020
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Nathan James Smith, Kiyoshi Minoura, Akira Sakai, Yuichi Kawahira
  • Patent number: 10782571
    Abstract: The disclosure provides the COA-type array substrate, which is realized by all or part of the outer edge of the color-resisting units are located on the first metal layer and/or the second metal layer, which is used for padding to reduce the topography difference at the outer edge position of the color-resisting units, so that the thickness of the photoresist coated on which is reduced to be easily removed by the exposure and development when the transparent conductive layer is patterned; in addition, both the first metal layer and the second metal layer have a reflective property, so that the exposure effect can be enhanced and the photoresist coated on which; the COA-type array substrate of the disclosure can eliminate or reduce the metal oxide residue at which through the above two effects and prevent the electrical signal of the pixel electrode from being uncontrollable.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: September 22, 2020
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Wu Cao
  • Patent number: 10781992
    Abstract: To facilitate lead wiring layout corresponding to an increase in the number of individual electrodes of the liquid crystal element in a vehicle headlamp system. The vehicle headlamp system that selectively performs light irradiation towards the periphery of its own vehicle includes a light source, a liquid crystal element, and a lens. The liquid crystal element includes a plurality of first individual electrode parts, a plurality of second individual electrode parts, and a first lead wiring part. The first lead wiring part includes a plurality of first individual wirings each of which is connected to one of the plurality of first individual electrode parts, and a plurality of second individual wirings each of which is connected to one of the plurality of second individual electrode parts and arranged through a gap formed between the adjacent first individual electrode parts in the first direction.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: September 22, 2020
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventors: Yasuo Toko, Tomohide Mano, Hiroshi Tozuka
  • Patent number: 10782568
    Abstract: The invention discloses an alignment method of a liquid crystal display panel including the following steps: assembling a color filter substrate, an array substrate and a liquid crystal layer into a liquid crystal display panel; applying a first alignment voltage to a common electrode line layer of the array substrate, applying a second alignment voltage to a common electrode layer of the color filter substrate, and a predetermined voltage difference existed between the first alignment voltage and the second alignment voltage; performing alignment to the liquid crystal layer of the liquid crystal display panel by the predetermined voltage difference, to make liquid crystal molecules in the liquid crystal layer arranged with a preset tilt angle; and irradiating the liquid crystal layer with an ultraviolet ray. The effect of alignment can be improved, the dependence of liquid crystal alignment on the data line can be reduced, and improves the product yield.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: September 22, 2020
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Xiaowen Lv, Pojen Chiang
  • Patent number: 10777585
    Abstract: To provide a display device with excellent display quality, in a display device including a signal line, a scan line, a transistor, a pixel electrode, and a common electrode in a pixel, the common electrode is included in which an extending direction of a region overlapping with the signal line differs from an extending direction of a region overlapping with the pixel electrode in a planar shape and the extending directions intersect with each other between the signal line and the pixel electrode. Thus, a change in transmittance of the pixel can be suppressed; accordingly, flickers can be reduced.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: September 15, 2020
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Daisuke Kubota, Ryo Hatsumi
  • Patent number: 10775673
    Abstract: The present application provides a pixel structure and an array substrate. The pixel structure includes: a pixel structure, which includes: an electronic switching device; a pixel electrode electrically connected to the electronic switching device, in which the pixel electrode includes a plurality of sub-pixel electrode regions, and the transmittances of the plurality of sub-pixel electrode regions are different; a gate line disposed on a lateral side of the pixel electrode and electrically connected to the electronic switching device; and a data line disposed on another lateral side of the pixel electrode and electrically connected to the electronic switching device.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: September 15, 2020
    Assignees: HKC CORPORATION LIMITED, CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Zeyao Li
  • Patent number: 10768491
    Abstract: An array substrate and a manufacture method thereof, a display panel and a display device. The array substrate includes pixel units. Each pixel unit includes a pixel electrode and a common electrode, which are respectively includes first pixel electrode strips and first common electrode strips that are arranged substantially in parallel in parallel in a first direction, each first common electrode strip overlaps at least one first pixel electrode strip. Each pixel unit includes at least one pixel unit sub-area, which has a sub-area symmetry axis, the first pixel electrode strip and the first common electrode strip are respectively arranged with respect to the sub-area symmetry axis symmetrically. On either side of the sub-area symmetry axis, the first common electrode strip is farther away from or closer to the sub-area symmetry axis than the at least one first pixel electrode strip that the each first common electrode strip overlaps.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: September 8, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., CHONGQING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Peng Li, Jungho Park, Heecheol Kim, Jaikwang Kim
  • Patent number: 10768495
    Abstract: A display device includes: a plurality of video lines and a plurality of scanning lines provided over an insulating base material; a light shielding film overlapping with the plurality of video lines and the plurality of scanning lines; a pixel electrode and a common electrode provided in a sub-pixel region surrounded by the plurality of video lines and the plurality of scanning lines in plan view; a liquid crystal layer driven by an electric field generated between the pixel electrode and the common electrode; and a first insulating layer provided between the pixel electrode and the common electrode. The common electrode is provided between the first insulating layer and the liquid crystal layer, and has an opening overlapping with the plurality of video lines and the plurality of scanning lines and overlapping with the pixel electrode. In a light transmission region surrounded by the light shielding film, a shape of the pixel electrode is a linear shape without a branching portion.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: September 8, 2020
    Assignee: Japan Display Inc.
    Inventor: Mitsutaka Okita
  • Patent number: 10762820
    Abstract: System and method for improving displayed image quality of an electronic display that displays a first image frame by applying a first voltage to a display pixel and a second image frame directly before the first image frame by applying a second voltage to the display pixel. A display pipeline is communicatively coupled to the electronic display and receives first image data corresponding with the first image frame, where the image data includes a first grayscale value corresponding with the display pixel. Additionally the display pipeline determines an inversion balancing grayscale offset based at least in part on the first grayscale value when polarity of the first voltage and polarity of the second voltage are the same and determines magnitude of the first voltage by applying the inversion balancing grayscale offset to the first grayscale value to reduce likelihood of a perceivable luminance spike when displaying the first image frame.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: September 1, 2020
    Assignee: Apple Inc.
    Inventors: Christopher P. Tann, Taesung Kim, Sandro H. Pintz
  • Patent number: 10754207
    Abstract: A liquid crystal display device includes an upper substrate and a lower substrate; and a liquid crystal layer sandwiched between the upper and lower substrates. The lower substrate includes a pixel electrode, a first auxiliary capacitance electrode, and a second auxiliary capacitance electrode for one pixel, and one or two auxiliary capacitance lines for one pixel line including pixels. The two auxiliary capacitive electrodes are electrically connected to different auxiliary capacitance lines. Each of the first auxiliary capacitance electrode and the second auxiliary capacitance electrode and the pixel electrode overlap each other in a plan view. The first auxiliary capacitance electrode and the second auxiliary capacitance electrode differ from each other in shape in a display region of each of the pixels. The shape of the first auxiliary capacitance electrode in a first pixel is identical to the shape of the second auxiliary capacitance electrode in a second pixel adjacent to the first pixel.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: August 25, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yosuke Iwata, Mitsuhiro Murata, Takuma Tomotoshi, Satoshi Matsumura
  • Patent number: 10739652
    Abstract: A display panel is disclosed, which includes: a substrate including a display region and a border region; plural scan lines disposed on the display region; plural data lines disposed on the display region, crossing with the scan lines to define plural pixel units and including adjacent first and second data lines; a first common line disposed on the display region and crossing with the data lines; and a first common pad disposed in one of the pixel units on the display region, electrically connecting to the first common line, and disposed between the first and second data line, wherein first and second minimum distances between the first common pad and the first and second data lines are different.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: August 11, 2020
    Assignee: INNOLUX CORPORATION
    Inventors: Yi-Ling Yu, Chun-Liang Lin, Chia-Hao Tsai
  • Patent number: 10725345
    Abstract: The displacement between a TFT substrate and a counter substrate and the cut of an alignment film caused by a columnar spacer are prevented. A liquid crystal display device includes: a TFT substrate including a scanning line extending in a first direction, a picture signal line extending in a second direction, a pixel electrode formed in a region surrounded by the scanning line and the picture signal line, and a common electrode formed as opposed to the pixel electrode through an insulating film; a counter substrate disposed as opposed to the TFT substrate and having a spacer; and a liquid crystal sandwiched between the substrates. A common metal interconnection is formed to cover the picture signal line or the scanning line, and stacked on the common electrode. A through hole is formed on the common metal interconnection. The tip end of the spacer is disposed inside the through hole.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: July 28, 2020
    Assignee: Japan Display Inc.
    Inventors: Masateru Morimoto, Saori Sugiyama, Motoharu Miyamoto
  • Patent number: 10712621
    Abstract: A liquid crystal display device includes a substrate, and a pixel electrode disposed on the substrate, the pixel electrode including a first stem electrode that extends in a first direction, a second stem electrode that extends in a second direction perpendicular to the first direction and intersects with the first stem electrode, a plurality of branch electrodes, the branch electrodes extending obliquely to the first direction and the second direction from the first stem electrode and the second stem electrode, a first connection electrode that connects distal ends of some of the branch electrodes to each other, extends in the first direction and intersects with the second stem electrode, and a first edge electrode that is connected to one distal end of the second stem electrode and extends in the first direction.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: July 14, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Se Hyun Lee, Hak Sun Chang, Cheol Shin
  • Patent number: 10705397
    Abstract: A liquid crystal display device includes: a plurality of scan lines and signal lines on one of a pair of substrates arranged to be opposed to each other with a liquid crystal layer sandwiched therebetween, the scan lines and signal lines extending in different directions; and an orientation film, pixel electrode, insulating layer and common electrode, the orientation film being rubbed in a rubbing direction having a given inclination with respect to a pixel arrangement direction. The pixel electrode is partitioned by the scan lines and signal lines and has subpixels made up of first and second regions. The first region has a plurality of slit-shaped openings having a given inclination in a first direction with respect to the rubbing direction. The second region has a plurality of slit-shaped openings having a given inclination in a second direction with respect to the rubbing direction.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: July 7, 2020
    Assignee: Japan Display Inc.
    Inventors: Daisuke Ito, Hideyuki Omori
  • Patent number: 10698277
    Abstract: To provide a semiconductor device, a liquid crystal display device, and an electronic device which have a wide viewing angle and in which the number of manufacturing steps, the number of masks, and manufacturing cost are reduced compared with a conventional one. The liquid crystal display device includes a first electrode formed over an entire surface of one side of a substrate; a first insulating film formed over the first electrode; a thin film transistor formed over the first insulating film; a second insulating film formed over the thin film transistor; a second electrode formed over the second insulating film and having a plurality of openings; and a liquid crystal over the second electrode. The liquid crystal is controlled by an electric field between the first electrode and the second electrode.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: June 30, 2020
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hajime Kimura
  • Patent number: 10690974
    Abstract: A liquid crystal display device includes a thin film transistor substrate having a pixel region and a frame region, and a color filter substrate. The frame region includes a first metal wire that surrounds the outside of the pixel region, and a second metal wire that is formed so as to surround the outside of the first metal wire. The first metal wire has at least one slit at an area overlapping with a seal material.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: June 23, 2020
    Assignee: Japan Display Inc.
    Inventors: Kenji Kitajima, Ryouhei Suzuki
  • Patent number: 10684521
    Abstract: A display device including: a first substrate; a gate line extending along a first direction on the first substrate; a data line disposed on the first substrate, insulated from the gate line, and extending along a second direction that intersects the first direction; a gate electrode protruding from the gate line; a source electrode extending from the data line; a drain electrode spaced apart from the source electrode; a pixel electrode electrically connected to the drain electrode; and a storage electrode spaced apart from the gate line and the gate electrode. The drain electrode includes a first overlap portion overlapping the gate electrode and a second overlap portion overlapping the storage electrode, and the second overlap portion overlaps at least a part of the pixel electrode.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: June 16, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Donghee Shin, Hyungjin Song, Byoungsun Na, Yoomi Ra, Soohong Cheon
  • Patent number: 10684517
    Abstract: The liquid crystal display device includes an island-shaped first semiconductor film 102 which is formed over a base insulating film 101 and in which a source 102d, a channel forming region 102a, and a drain 102b are formed; a first electrode 102c which is formed of a material same as the first semiconductor film 102 to be the source 102d or the drain 102b and formed over the base insulating film 101; a second electrode 108 which is formed over the first electrode 102c and includes a first opening pattern 112; and a liquid crystal 110 which is provided over the second electrode 108.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: June 16, 2020
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hajime Kimura
  • Patent number: 10670930
    Abstract: A liquid crystal display preventing a light leakage is disclosed. The liquid crystal display includes gate lines and data lines disposed to cross over each other, a common line crossing over the data lines and disposed in parallel with the gate lines, a dummy data line crossing over the gate lines and disposed in parallel with the data lines, a dummy pixel electrode disposed in a dummy area formed by an outermost data line of the data lines, the dummy data line and first and second gate lines adjacent to each other among the gate lines; a pixel electrode disposed in a pixel area between first and second data lines adjacent to each other among the data lines and the first and second gate lines; and a common electrode disposed to overlap the pixel electrode and the dummy pixel electrode. The dummy pixel electrode is connected to the common line.
    Type: Grant
    Filed: November 26, 2017
    Date of Patent: June 2, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Seonghun Jeong, Hyuck Choi, Haye Kim, Minkyu Chun, Kangil Kim
  • Patent number: 10663814
    Abstract: A liquid crystal panel includes pixel electrodes and a common electrode. The common electrode is disposed to overlap the pixel electrodes. A wire is connected to the common electrode. The common electrode includes a first region and a second region. The first region includes first openings. The second region includes second openings. The second region is located farther away from a point of connection with the wire than the first region. The second openings are smaller in area than the first openings.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: May 26, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Szu-Chi Huang, Junichi Morinaga, Katsuya Ogawa
  • Patent number: 10656481
    Abstract: A liquid crystal display device is disclosed. The liquid crystal display device includes a display panel that includes four sides. One of the four sides has a cut edge. The display panel includes a display region in which an image is to be displayed; a non-display region that surrounds the display region and that includes a non-light transmitting layer that restricts light transmission therethrough; and a plurality of slits disposed in the non-light transmitting layer. An edge of the non-light transmitting layer is co-planar with the cut edge. The plurality of slits are parallel to the cut edge.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: May 19, 2020
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Ryouichi Ootsu, Hiroaki Iwato
  • Patent number: 10656482
    Abstract: A channel layer is formed of an oxide semiconductor. A first insulating film is provided on the channel layer, a source line, and a drain electrode, and includes a drain contact hole which reaches the drain electrode. A pixel electrode is provided on the first insulating film, includes a connection conductive layer which is connected to the drain electrode by the drain contact hole, and is formed of a transparent conductive material. The pixel electrode is covered with a second insulating film. A common electrode is provided on the second insulating film, includes an opening which faces the pixel electrode in a thickness direction, and is formed of a transparent conductive material. A metal layer, in conjunction with a part of the common electrode, forms a laminated structure, and includes a light-shield part which overlaps the channel layer at least partially in plan view.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: May 19, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shinji Kawabuchi, Naruhito Hoka, Kazushi Yamayoshi, Akihiko Hosono, Kenichi Miyamoto
  • Patent number: 10649285
    Abstract: This invention discloses a pixel structure comprising: a scan line, and a data line, being crossed with the scan line to define a pixel unit. The pixel unit comprises a pixel electrode including a main body portion and a peripheral portion; a pixel driving element; and a common electrode disposed in an overlay structure with the pixel electrode. The common electrode forms a storage capacitor with the pixel electrode, and includes an outside portion adjacent to the data or scan line. The pixel electrode further includes an extension portion located outside the peripheral portion. The extension portion electrically connects the peripheral portion and forms an evading hole therebetween. The outside portion of the common electrode corresponds to the evading hole. The present invention further discloses a liquid crystal display panel. This invention has advantages of increasing the capacity of the storage capacitor and improving the parasitic capacitance and dark veins.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: May 12, 2020
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Yanxi Ye
  • Patent number: 10649287
    Abstract: In this display device, an electrode layer for an upper electrode and a lower electrode is formed on an array substrate via a dielectric film, one of the upper electrode and the lower electrode is a pixel electrode, the other thereof is a common electrode, and an opening portion for generating horizontal electric field in a liquid crystal layer is formed in accordance with a shape of the electrode layer in a plan view. A CF substrate has a light-shielding film (BM) including a lateral BM portion. The opening portion has a plurality of slits in an X direction, and an end portion of an outermost slit in a Y direction is concealed by the lateral BM portion overlapped in a Z direction.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: May 12, 2020
    Assignee: Japan Display Inc.
    Inventor: Toshiharu Matsushima
  • Patent number: 10642103
    Abstract: According to one embodiment, a display device includes first and second substrates, and liquid crystal layer. The first substrate includes first and second electrodes. The second electrode includes comblike electrodes extending in parallel to a first direction and tapered toward tips thereof, and a connecting portion which connects the comblike electrodes. An initial alignment direction is parallel to the first direction or a direction orthogonal to the first direction. The comblike electrode includes a first part having sides each form a first angle with the first direction, and a second part having sides each form a second angle with the first direction, the second angle being greater than the first angle.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: May 5, 2020
    Assignee: Japan Display Inc.
    Inventor: Toshiharu Matsushima
  • Patent number: 10642115
    Abstract: Examples of liquid crystal display devices are described herein. In an example, a liquid crystal display device comprises a first substrate, a second substrate, and a liquid crystal layer therebetween. The second substrate comprises a plurality of source lines, a plurality of gate lines crossing the plurality of source lines, and a plurality of pixels in a matrix arrangement. A pixel from the plurality of pixels being defined by two adjacent source lines and two adjacent gate lines. A pixel electrode formed in the pixel comprises a plurality of slits. The plurality of slits includes a first set of slit segments extending in a first direction, and a second set of slit segments extending in a second direction. Further, a first light blocking member extends along a common boundary area of the first set of slit segments and the second set of slit segments.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: May 5, 2020
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventor: Teruhisa Nakagawa
  • Patent number: 10627682
    Abstract: A liquid crystal display device includes a first substrate having a plurality of pixel regions; thin film transistors on the first substrate; a first electrode electrically connected to each of the thin film transistors and in each of the plurality of pixel regions; a passivation layer on the first electrode; a second electrode on the passivation layer and defining an opening in each of the plurality of pixel regions corresponding to the first electrode; a liquid crystal layer on the second electrode; and a second substrate on the liquid crystal layer.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: April 21, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Song-Yi Jeong, Won-Taeck Kim
  • Patent number: 10620489
    Abstract: According to one embodiment, a liquid crystal display device comprises first and second substrates, a sealing member, and a liquid crystal layer. The first substrate includes an image display area, a peripheral area, a common electrode, a scanning line, a signal line, a switching element, a pixel electrode, and first and second electrodes. At least a part of the first electrode is formed of a metal material and is closer to the liquid crystal layer than the scanning and signal lines. The first voltage is applied to the first electrode and the second voltage is applied to the second electrode. Ions in the liquid crystal layer are trapped by an electric field formed between the first and second electrodes.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: April 14, 2020
    Assignee: Japan Display Inc.
    Inventor: Hideki Shiina
  • Patent number: 10615179
    Abstract: A more convenient and highly reliable semiconductor device which has a transistor including an oxide semiconductor with higher impact resistance used for a variety of applications is provided. A semiconductor device has a bottom-gate transistor including a gate electrode layer, a gate insulating layer, and an oxide semiconductor layer over a substrate, an insulating layer over the transistor, and a conductive layer over the insulating layer. The insulating layer covers the oxide semiconductor layer and is in contact with the gate insulating layer. In a channel width direction of the oxide semiconductor layer, end portions of the gate insulating layer and the insulating layer are aligned with each other over the gate electrode layer, and the conductive layer covers a channel formation region of the oxide semiconductor layer and the end portions of the gate insulating layer and the insulating layer and is in contact with the gate electrode layer.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: April 7, 2020
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Shunpei Yamazaki
  • Patent number: 10599905
    Abstract: Disclosed is a fingerprint detection circuit and a display device. The fingerprint detection circuit comprises at least one fingerprint detection unit, the fingerprint detection unit comprising a switch transistor and a sensor capacitor, the fingerprint detection unit further comprising an output amplification element and a data input terminal for receiving a data signal, wherein a control terminal of the output amplification element is coupled with a terminal of the sensor capacitor, an output terminal of the output amplification element functions as an output terminal of the fingerprint detection unit, an input terminal of the output amplification element is coupled with the data input terminal, the output amplification element is configured for amplifying and outputting a current input to the output amplification element via the data input terminal.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: March 24, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Haisheng Wang, Xue Dong, Hailin Xue, Xiaochuan Chen, Xiaoliang Ding, Yingming Liu, Shengji Yang, Weijie Zhao, Hongjuan Liu, Wei Liu, Changfeng Li, Pengpeng Wang
  • Patent number: 10591767
    Abstract: A display device in which ambient light reflections, for example, from IPS or FFS type displays are reduced by a circular polariser (e.g., linear polariser combined with external quarter waveplate) to make the light circular polarized, as it traverses the multiple reflective layers between the polariser and LC layer, and then an internal quarter waveplate converts the light back to linear polarisation before it enters the LC, so the display can operate as normal, while the circular polariser absorbs unwanted reflections of ambient light from within the display.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: March 17, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Nathan James Smith, Hywel Hopkin, Kiyoshi Minoura, Akira Sakai, Benjamin John Broughton
  • Patent number: 10587866
    Abstract: A reconfigurable parallax barrier panel comprising an electro-optic material has a first region, a second region and a first compensation region. First electrodes are addressable to define, in the first region of the panel, a parallax barrier array selected from a plurality of predetermined parallax barrier arrays, and second electrodes are addressable define, in the second region of the panel, independently of the first parallax barrier array, a parallax barrier array selected from the plurality of predetermined parallax barrier arrays. Electrodes of the first compensation region are addressable to define, dependent on the first parallax barrier array and on the second parallax barrier array, at least one slit and/or at least one barrier between the first region and the second region.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: March 10, 2020
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Nathan James Smith, Hywel Hopkin, Takehiro Murao, Ryoh Kikuchi
  • Patent number: 10578930
    Abstract: A liquid crystal display device including a first substrate including a first display electrode and a second display electrode that is disposed opposite the first display electrode with an insulator interposed between the first display electrode and the second display electrode, a second substrate disposed opposite the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate. In each pixel, the first display electrode includes a plurality of first openings, and the second display electrode includes a plurality of second openings disposed corresponding to positions of the plurality of first openings.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: March 3, 2020
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Koji Mimura
  • Patent number: 10580805
    Abstract: Provided is a display apparatus including a substrate and a semiconductor layer including first and second semiconductor layers. A first gate insulating layer is formed on the semiconductor layer. A first gate wiring overlapping the first semiconductor layer is formed on the first gate insulating layer. A second gate insulating layer is formed on the first gate wiring. A second gate wiring overlapping the second semiconductor layer is formed on the second gate insulating layer. A third gate insulating layer covers the second gate wiring. A driving voltage line intersecting the first and second gate wirings is formed on the third gate insulating layer. A data line intersecting the first and second gate wirings is formed on the third gate insulating layer. A short circuit protection area is formed between the first gate wiring, the second gate wiring, the driving voltage line and the data line.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: March 3, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyo Jin Kim, Won Kyu Lee, Seung Gyu Tae
  • Patent number: 10578932
    Abstract: According to an aspect, a liquid crystal display device includes: a first substrate and a second substrate that face each other; a liquid crystal layer provided between the first substrate and the second substrate; and a first electrode and a second electrode provided between the first substrate and the liquid crystal layer. The first electrode includes: at least an electrode base portion that extends in a first direction; and a plurality of comb-shaped portions that protrude from the electrode base portion at a fixed distance away from each other, and extend in a second direction different from the first direction. Each comb-shaped portion has a coupling portion layered on or under the electrode base portion.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: March 3, 2020
    Assignee: Japan Display Inc.
    Inventors: Masaya Tamaki, Toshiharu Matsushima
  • Patent number: 10571736
    Abstract: A method for manufacturing an array substrate and an array substrate are disclosed. The method comprises the steps of forming a plurality of control electrodes on a baseplate, and forming a color-resist region between two adjacent control electrodes, wherein the color-resist region is a first color-resist region, a second color-resist region, a third color-resist region, and a fourth color-resist region in sequence; forming a first color-resist in the first color-resist region, forming a second color-resist in the second color-resist region, and forming a third color-resist in the third color-resist region; and coating the baseplate on which the control electrodes, the first color-resist, the second color-resist, and the third color-resist are formed and the fourth color-resist region with a transparent photoresist so as to form a flat layer. In the method according to the present disclosure, the production efficiency of the array substrate can be improved.
    Type: Grant
    Filed: September 6, 2015
    Date of Patent: February 25, 2020
    Assignees: Shenzhen China Star Optoelectronics Technology Co., Ltd., Wuhan China Star Optoelectronics Technology Co., Ltd.
    Inventor: Xing Ming
  • Patent number: 10571749
    Abstract: According to one embodiment, a liquid crystal display device includes second substrates, a light-shielding layer, and a liquid crystal layer. The first substrate includes pixel electrodes, a common electrode, and subpixel areas each including area in which the pixel electrode is present and a second area in which the pixel electrode is not present. Each of the subpixel areas includes first and second sides. The first area includes an axial area and branch areas. The second area includes a gap area between the adjacent branch areas. The axial area includes a projection portion projecting to the second side and in alignment with the gap area, and overlaps the light-shielding layer.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: February 25, 2020
    Assignee: Japan Display Inc.
    Inventor: Toshiharu Matsushima
  • Patent number: 10573264
    Abstract: According to one embodiment, a display device comprises first and second substrates and a liquid crystal layer. The first substrate includes a pixel electrode and a common electrode. The second substrate is opposed to the first substrate. The liquid crystal layer is between the first substrate and the second substrate. A frame frequency for rewriting a voltage of the pixel electrode is 80 Hz or more. A liquid crystal material contained in the liquid crystal layer has negative dielectric anisotropy. Product ?nd of a gap d between the first substrate and the second substrate and refractive anisotropy ?n of the liquid crystal material is less than 0.33 ?m. The gap d is more than 2 ?m and less than 3 ?m.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: February 25, 2020
    Assignee: Japan Display Inc.
    Inventors: Takenori Hirota, Jin Hirosawa, Hidemasa Yamaguchi, Yasuhiro Takahashi
  • Patent number: 10571754
    Abstract: The present disclosure provides a liquid crystal display device including a plurality of pixels arranged in an array, each of the pixels comprising: a first pixel region and a second pixel region aligned vertically with the first pixel region. Any two adjacent pixels in the same row have structures being mirror-symmetric with respect to each other. And, for any two adjacent rows of pixels, a structure of the mth pixel in the (N+1)th row and a structure of the (m+1)th pixel in the Nth row are the same, where N and M are natural numbers.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: February 25, 2020
    Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., LTD.
    Inventor: Wenying Li
  • Patent number: 10564463
    Abstract: To improve sensing sensitivity of a touch panel. A touch panel-attached display device includes an active matrix substrate 1, a counter substrate, and a liquid crystal layer. On the active matrix substrate 1, a TFT (display control element) 42, a first insulating film 44, a plurality of pixel electrodes 31, a second insulating film 46, and a counter electrode 21 are laminated in order. In the active matrix substrate 1, a control unit which detects a touch position by supplying a touch driving signal to a plurality of counter electrodes 21, and a touch sensor wiring 22 which is formed between the first insulating film 44 and the second insulating film 46, which connects the control unit and the counter electrode 21, and which is for supplying the touch driving signal from the control unit to the counter electrode 21, are also formed.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: February 18, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tetsuya Yamashita, Yoshihito Hara
  • Patent number: 10551706
    Abstract: The present invention is intended to control the color temperature of white exhibited by a liquid crystal display device. White is produced when light waves emitted through pixels associated with three colors of red, green, and blue have maximum intensities. The amounts of light emitted through the respective pixels are controlled by differentiating the shapes of the pixel electrodes disposed at the respective pixels from one another. Thus, the color temperature of white is controlled. Otherwise, the shapes of interceptive films disposed at the respective pixels are differentiated from one another in order to control light waves emitted through the respective pixels. Thus, the color temperature of white is controlled. The interceptive film may be shaped like the pixel electrode. Otherwise, the interceptive film may be realized with an interceptive pattern other than that of the pixel electrode or one of openings bored in a black matrix.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: February 4, 2020
    Assignees: Japan DIsplay Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Ikuko Mori, Munenori Motooka, Ryutaro Oke, Kazunori Ojima, Kikuo Ono
  • Patent number: 10551681
    Abstract: A liquid crystal panel includes: a first substrate including multiple pixel electrodes; a liquid crystal layer; and a second substrate. The domains in the display unit region located in an nth row are arranged in an order of a first domain, a second domain, a third domain, and a fourth domain. Each of the pixel electrodes is provided with multiple fine slits parallel to the alignment vectors of the respective domains. Each of the pixel electrodes includes a region where the fine slits do not exist, at both ends of the pixel electrode parallel to the row direction and at one or both of ends of the pixel electrode parallel to the column direction. A portion having a largest width of the region where the fine slits do not exist is included in one or both of the ends of the pixel electrode parallel to the row direction.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: February 4, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Fumikazu Shimoshikiryoh, Shinichi Terashita, Kouichi Watanabe
  • Patent number: 10551694
    Abstract: According to one embodiment, a liquid crystal device includes a first substrate including a first electrode and a second electrode, a second substrate, a liquid crystal layer, and the second electrode is located on a side of the liquid crystal layer with respect to the first electrode and includes a first opening, the first opening is formed into a polygonal shape including a base portion and at least one projecting portion projecting from the base portion along a first direction, a width of the base portion along the first direction is greater than a width of the projecting portion along the first direction, and the liquid crystal layer exhibits transparency while no voltage being applied and scattering property while voltage being applied.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: February 4, 2020
    Assignee: Japan Display Inc.
    Inventors: Kojiro Ikeda, Masaaki Kabe, Shinichiro Oka, Chikyu Nakaoka
  • Patent number: 10551704
    Abstract: Provided is an active matrix substrate that includes a substrate, a thin film transistor, an electrode layer, and a second insulating film. The thin film transistor is provided on the substrate and includes an oxide semiconductor layer, a gate electrode, and source and drain electrodes. The oxide semiconductor layer includes a first region as a channel region. The electrode layer is level with the gate electrode, is provided in a different region from the thin film transistor, and includes a first end. The second insulating film is provided between the substrate and the electrode layer and includes a second end at a more retreated position than the first end of the electrode layer. The oxide semiconductor layer further includes a second region having lower resistance than the first region. The electrode layer is electrically coupled, at the first end, to the second region of the oxide semiconductor layer.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: February 4, 2020
    Assignee: JOLED INC.
    Inventors: Eri Matsuo, Tomoatsu Kinoshita, Motohiro Toyota, Yasunobu Hiromasu