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公开(公告)号：US11340500B2
公开(公告)日：2022-05-24
申请号：US16776044
申请日：2020-01-29
Applicant: Panasonic Liquid Crystal Display Co., Ltd.
Inventor： Teruhisa Nakagawa
IPC: G02F1/1368 , G02F1/1339 , G02F1/1362
Abstract: A liquid crystal display device, comprising: a first substrate; a second substrate disposed opposite to the first substrate; a liquid crystal layer; and a spacer, wherein the first substrate includes a first pixel row, a second pixel row, a first source line and a second source line that extend in the second direction, a first gate line that extends in the first direction between the first pixel row and the second pixel row, a first thin film transistor to which the first source line, and the first gate line are electrically connected, and a second thin film transistor to which the second source line, and the first gate line are electrically connected, and the spacer is disposed so as to overlap with at least a portion of the first thin film transistor and at least a portion of the second thin film transistor in plan view.
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公开(公告)号：US11328680B2
公开(公告)日：2022-05-10
申请号：US17096418
申请日：2020-11-12
Inventor： Hideyuki Nakanishi , Katsuhiro Kikuchi , Takenobu Nishiguchi , Tatsuo Itoman
IPC: G09G3/36
Abstract: An image processing device that generates a second output image signal output to a second liquid crystal panel that is disposed to be superposed on a first liquid crystal panel, includes: a first corrector that generates a gamma correction signal in which a gradation value of an input image signal is corrected; a detector that receives the gamma correction signal and detects an image region brighter than surroundings as a first high-frequency portion from the gamma correction signal; and a second corrector that receives the gamma correction signal and a detection result of the detector and performs correction to decrease the gradation value of the first high-frequency portion in the gamma correction signal. The second output image signal is generated based on the gamma correction signal corrected by the second corrector.
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公开(公告)号：US11287922B2
公开(公告)日：2022-03-29
申请号：US17120837
申请日：2020-12-14
Inventor： Shinya Hashimoto
IPC: G06F3/041 , H05K1/11 , G06F3/044 , G06F1/16 , H05K1/02 , G02F1/1333 , G02F1/1343 , H05K3/36
Abstract: A display device includes a display panel, and an electrostatic capacitive type touch panel which is formed in an overlapping manner with the display panel. A plurality of X electrodes and a plurality of Y electrodes intersecting with the X electrodes. A first signal line supplies signals to the X electrodes, a second signal line supplies signals to the Y electrodes, and the first signal line and the second signal line are formed on a flexible printed circuit board. A dummy electrode is formed adjacent to an electrode portion of each X electrode and electrode portion of each Y electrode, the dummy electrode does not overlap the X electrode and the Y electrode, and the dummy electrode does not electrically connect with the first and second signal lines.
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公开(公告)号：US11209684B2
公开(公告)日：2021-12-28
申请号：US17076702
申请日：2020-10-21
Inventor： Ryosuke Yabuki
IPC: G02F1/1333 , G02F1/1345
Abstract: A liquid crystal display device includes: first and second liquid crystal cells; first and second circuit boards connected to the first and second liquid crystal cells through first and second flexible wiring boards, respectively; a frame disposed on an opposite side to the first liquid crystal cell with respect to the second liquid crystal cell; and a holder that holds the first circuit board and the second circuit board. The first circuit board and the second circuit board are disposed on an opposite side to the second liquid crystal cell with respect to the frame. The second circuit board is located closer to the frame than the first circuit board, and the holder sandwiches the first circuit board, and stores the second circuit board between the frame and the holder.
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公开(公告)号：US11170738B2
公开(公告)日：2021-11-09
申请号：US16694363
申请日：2019-11-25
Inventor： Hideyuki Nakanishi , Toshikazu Koudo , Katsuhiro Kikuchi
Abstract: A display device according to present disclosure comprising: a first display panel that displays a first image; a second display panel disposed on a back surface side of the first display panel to display a second image; and an image processor that acquires input image data and generates first image data corresponding to the first image and second image data corresponding to the second image based on the input image data, wherein the image processor includes a first filter circuit that performs first low-pass filter processing on the input image data, and the first filter circuit reduces a degree of the first low-pass filter processing when input gradation of the input image data is less than first gradation as compared with a case that the input gradation is greater than or equal to the first gradation.
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Patent Agency Ranking
公开(公告)号：US11163391B2
公开(公告)日：2021-11-02
申请号：US16826307
申请日：2020-03-23
Inventor： Toshiyuki Aoyama , Tetsuo Fukami , Daisuke Kajita , Kazushige Takagi
Abstract: Provided is a display panel including: a plurality of pixel electrodes divided into a plurality of groups; and a plurality of common electrodes arranged at a ratio of one to a plurality of pixel electrodes included in one of the plurality of groups. Each of a plurality of sensor electrode lines overlaps with corresponding one of a plurality of data signal lines in plan view. The plurality of sensor electrode lines and each of the plurality of common electrodes overlap each other in plan view. The each of the plurality of common electrodes is electrically connected to the plurality of sensor electrode lines. At least one insulating film is formed between each of a region between the data signal lines and the sensor electrode lines, a region between the sensor electrode lines and the common electrodes, and a region between the common electrodes and the pixel electrodes.
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公开(公告)号：US11156875B2
公开(公告)日：2021-10-26
申请号：US16704538
申请日：2019-12-05
Inventor： Noboru Kunimatsu , Chikae Matsui , Hidehiro Sonoda , Yuko Matsumoto , Shoichi Uchino , Masaki Matsumori , Yasushi Tomioka
IPC: G02F1/1337 , G02F1/1343 , G02F1/1368 , H01L27/12 , C09K19/56
Abstract: A liquid crystal display device includes a TFT substrate having a first alignment film and an opposing substrate having a second alignment film with liquid crystals sandwiched therebetween. One of the first and second alignment films, comprises a first polyimide produced via polyamide acid ester containing cyclobutane as a precursor and a second polyimide produced via polyamide acid as a precursor. The polyamide acid has a higher polarity than that of the polyamide acid ester. The one of the first and second alignment films is responsive to photo-alignment. A first side of the one of the first and second alignment films is adjacent to the liquid crystals, and a second side thereof is closer to one of the TFT substrate and the counter substrate than the first side. The first side contains more of the first polyimide and less of the second polyimide than the second side.
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公开(公告)号：US11132967B2
公开(公告)日：2021-09-28
申请号：US16790261
申请日：2020-02-13
Inventor： Hideyuki Nakanishi , Toshikazu Koudo , Katsuhiro Kikuchi
Abstract: A liquid crystal display device having a plurality of display panels disposed in a superposed manner, comprising: a first display panel that displays a first image; a second display panel disposed on a back surface side of the first display panel to display a second image; and an image processor that generates first image data for the first image and second image data for the second image based on the input image data, wherein the image processor includes: a differential filter that performs differential filter processing on a luminance signal calculated from the input image data and outputs a differential detection value; a background level detection circuit that detects a background level using the luminance signal; a gain determination circuit that determines a filter gain using the differential detection value and the background level; and a low-pass filter that performs low-pass filter processing using the filter gain.
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公开(公告)号：US11119368B2
公开(公告)日：2021-09-14
申请号：US16781756
申请日：2020-02-04
Inventor： Teruhisa Nakagawa
IPC: G02F1/1343 , G02F1/1368
Abstract: A liquid crystal display panel having a plurality of pixels arrayed in a matrix, the liquid crystal display panel comprising: a plurality of first signal lines; a transistor provided in each of the plurality of pixels; and a pixel electrode provided in each of the plurality of pixels, wherein, in each of the plurality of pixels, the pixel electrode includes a first pixel electrode and a second pixel electrode that are separated across the first signal line corresponding to the pixel and a bridge electrode that extends over the first signal line and connects the first pixel electrode and the second pixel electrode, the first pixel electrode has a plurality of first line electrodes extending in a first direction, and the second pixel electrode has a plurality of second line electrodes extending in a second direction different from the first direction.
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公开(公告)号：US11081071B2
公开(公告)日：2021-08-03
申请号：US16709570
申请日：2019-12-10
Inventor： Toshikazu Koudo
IPC: G09G3/36
Abstract: A liquid crystal display device that displays an input video signal, the liquid crystal display device comprising: a first liquid crystal display panel and a second liquid crystal display panel disposed to be laminated; a gamma corrector that generates a corrected video signal by performing gamma correction decided depending on a first control signal input from an outside with respect to the video signal; a first video signal generator that generates a first video signal for the first liquid crystal display panel using the corrected video signal; and a second video signal generator that generates a second video signal for the second liquid crystal display panel using the first video signal.
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