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公开(公告)号：US20210193061A1
公开(公告)日：2021-06-24
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：US20210142746A1
公开(公告)日：2021-05-13
申请号：US17152733
申请日：2021-01-19
Inventor： Satoshi HIROTSUNE , Katsuji TANAKA
IPC: G09G3/36 , G02F1/1362 , G02F1/1333 , G02F1/13357
Abstract: A liquid crystal display device is disclosed utilizing two or more display panels stacked on top of each other. In a dual panel configuration, the first display panel may be comprised of color pixels and the second display panel may be comprised of contrast pixels. The color pixel in the first display panel has a corresponding contrast pixel in the second display panel wherein said contrast pixel is larger in terms of length and in size than the corresponding color pixel. The liquid crystal display device may also switch to a mode that uses an expansion method of contrast pixels to reduce image displacement. Further disclosed is a configuration where the relative position of the first display panel and the second display panel may be adjusted to align the corresponding color and contrast pixels when viewing the display in oblique angles.
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公开(公告)号：US10937376B2
公开(公告)日：2021-03-02
申请号：US16162349
申请日：2018-10-16
Inventor： Satoshi Hirotsune , Katsuji Tanaka
IPC: G09G3/20 , G09G3/36 , G02F1/1362 , G02F1/1333 , G02F1/13357
Abstract: A liquid crystal display device is disclosed utilizing two or more display panels stacked on top of each other. In a dual panel configuration, the first display panel may be comprised of color pixels and the second display panel may be comprised of contrast pixels. The color pixel in the first display panel has a corresponding contrast pixel in the second display panel wherein said contrast pixel is larger in terms of length and in size than the corresponding color pixel. The liquid crystal display device may also switch to a mode that uses an expansion method of contrast pixels to reduce image displacement. Further disclosed is a configuration where the relative position of the first display panel and the second display panel may be adjusted to align the corresponding color and contrast pixels when viewing the display in oblique angles.
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公开(公告)号：US20210041742A1
公开(公告)日：2021-02-11
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：US10884296B2
公开(公告)日：2021-01-05
申请号：US16413136
申请日：2019-05-15
Inventor： Tetsuo Fukami
IPC: G02F1/1343 , G02F1/1362 , G09F9/302 , G09F9/46 , G02F1/1368 , G09G3/36
Abstract: A display device comprises: a display panel in which a plurality of pixels are arranged in a matrix form, wherein the plurality of pixels include a plurality of first pixels and a plurality of second pixels arrayed at a pitch different from an array pitch of the plurality of first pixels, and a number of the plurality of first pixels is different from a number of the plurality of second pixels.
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Patent Agency Ranking
公开(公告)号：US20200272009A1
公开(公告)日：2020-08-27
申请号：US16784705
申请日：2020-02-07
Inventor： Teruhisa NAKAGAWA
IPC: G02F1/1362 , G02F1/1368
Abstract: A liquid crystal display device comprising: a first liquid crystal display panel; and a second liquid crystal display panel opposed to the first liquid crystal display panel, wherein each of the first liquid crystal display panel and the second liquid crystal display panel includes a video signal line, a scanning line, a transistor provided in each pixel, and a pixel electrode provided in each pixel, and at least one of the video signal line, the scanning line, a semiconductor layer of the transistor, and the pixel electrode is patterned in an identical shape in the first liquid crystal display panel and the second liquid crystal display panel.
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公开(公告)号：US11579479B2
公开(公告)日：2023-02-14
申请号：US17456331
申请日：2021-11-23
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：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：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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