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公开(公告)号：US20240257551A1
公开(公告)日：2024-08-01
申请号：US18632630
申请日：2024-04-11
Applicant: Japan Display Inc.
Inventor： Tadayoshi KATSUTA
IPC: G06V40/13 , G06V40/145 , G09G3/3225 , G09G3/3266 , H01L27/146
CPC classification number: G06V40/1318 , G09G3/3225 , G09G3/3266 , H01L27/14603 , G06V40/145 , G09G2310/0286 , H01L27/14643
Abstract: A detection device includes a plurality of detection elements arranged in a matrix having a row-column configuration in a detection area, a plurality of scan lines each coupled to the detection elements arranged in a first direction, a drive circuit configured to drive the scan lines, a plurality of output signal lines each coupled to the detection elements arranged in a second direction different from the first direction, and a detection circuit configured to be supplied with detection signals from the detection elements through the output signal lines.
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公开(公告)号：US20240063231A1
公开(公告)日：2024-02-22
申请号：US18235146
申请日：2023-08-17
Applicant: Japan Display Inc.
Inventor： Tadayoshi KATSUTA
IPC: H01L27/12 , G09G3/3233 , G09G3/20
CPC classification number: H01L27/124 , G09G3/3233 , G09G3/2096 , G09G2330/027 , G09G2320/0247 , G09G2320/046
Abstract: A display device includes a pixel, a scanning line, a signal line, and a drive circuit configured to be supplied with a first power supply voltage signal of a positive value and a second power supply voltage signal of a negative value. The drive circuit includes: a gate driver configured to supply a scanning signal to the scanning line; a signal line selection circuit configured to supply a pixel signal to the signal line; and a display control circuit. The display control circuit is configured to, at first time in a power-off sequence, supply the first power supply voltage signal to the scanning line, supply a GND potential to the common electrode, and supply an adjustment potential of a positive value to the signal line. The display control circuit is configured to supply the GND potential to the scanning line at second time after the first time.
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公开(公告)号：US20240062734A1
公开(公告)日：2024-02-22
申请号：US18235994
申请日：2023-08-21
Applicant: Japan Display Inc.
Inventor： Tadayoshi KATSUTA
IPC: G09G3/36
CPC classification number: G09G3/3677 , G09G2310/061 , G09G2320/0247 , G09G2320/046 , G09G2330/022
Abstract: A display device includes: a pixel, a scanning line, a signal line, and a drive circuit. The drive circuit includes: a gate driver configured to supply a scanning signal to a scanning line; a signal line selection circuit configured to supply a pixel signal to a signal line; and a display control circuit. The drive circuit includes: a first switch circuit configured to be turned on at first time in a power-off sequence to supply a first power supply voltage signal to the scanning line; a second switch circuit configured to be turned on at the first time to supply a GND potential to the signal line; and a reset circuit configured to maintain an ON state of the first and second switch circuits after control on the gate driver and the signal line selection circuit is stopped at second time after the first time.
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公开(公告)号：US20230282657A1
公开(公告)日：2023-09-07
申请号：US18197229
申请日：2023-05-15
Applicant: Japan Display Inc.
Inventor： Tadayoshi KATSUTA
IPC: H01L27/146 , G06V40/13
CPC classification number: H01L27/14612 , G06V40/1318 , H01L27/14643
Abstract: A detection device includes a sensor area in which a plurality of detection elements each comprising a photoelectric conversion element are arranged in a detection region, a drive circuit configured to supply a plurality of drive signals to the detection elements, and a detection circuit configured to process a detection signal output from each of the detection elements.
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公开(公告)号：US20230053241A1
公开(公告)日：2023-02-16
申请号：US17886903
申请日：2022-08-12
Applicant: Japan Display Inc.
Inventor： Tadayoshi KATSUTA , Yoshitaka OZEKI
IPC: H01L27/146
Abstract: A detection device includes a plurality of detection elements that are arranged in a matrix having a row-column configuration in a detection area, and each comprise a photoelectric conversion element to which a reverse bias voltage is configured to be applied when detection is performed, and an initialization circuit configured to apply an initialization voltage higher than the reverse bias voltage to the photoelectric conversion element before the reverse bias voltage is applied to the photoelectric conversion element.
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Patent Agency Ranking
公开(公告)号：US20230027962A1
公开(公告)日：2023-01-26
申请号：US17960368
申请日：2022-10-05
Applicant: Japan Display Inc.
Inventor： Tadayoshi KATSUTA , Hiroshi MIZUHASHI
Abstract: A display device with is touch detection function is provided and includes display area where electrodes are arranged in matrix having first and second directions crossing above substrate; common electrodes provided so as to face pixel electrodes; pixel signal lines each coupled to pixel electrodes, extending in first direction; control device for performing image display control and including drive signal generator and source driver; single first wire to which both display drive voltage and touch drive signal are supplied from drive signal generator, and selection switches for selecting common electrodes, wherein the drive signal generator includes first and second voltage generators for generating first and second voltages, and switching circuit for switching between first and second voltages, and wherein selection switches each coupled to single first wire via first coupling conductor and coupled to common electrode via second coupling conductor are arranged in frame area along single first wire, and are overlapped by single first wire that is supplied with display drive voltage from drive signal generator and that is supplied with touch drive signal from drive signal generator.
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公开(公告)号：US20220246645A1
公开(公告)日：2022-08-04
申请号：US17728278
申请日：2022-04-25
Applicant: Japan Display Inc.
Inventor： Tadayoshi KATSUTA
IPC: H01L27/12 , G02F1/1362
Abstract: According to an aspect, an array substrate includes a first scan line, a second scan line, and a signal line. A semiconductor film has a coupling portion coupling one end of a first linear portion to one end of a second linear portion. Another end of the first linear portion of the semiconductor film and another end of the second linear portion of the semiconductor film are coupled to the signal line. In a plan view, the semiconductor film is disposed between the first scan line and the second scan line, the first linear portion intersects two first gate electrodes, and the second linear portion intersects two second gate electrodes.
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公开(公告)号：US20220238578A1
公开(公告)日：2022-07-28
申请号：US17714478
申请日：2022-04-06
Applicant: Japan Display Inc.
Inventor： Tadayoshi KATSUTA
IPC: H01L27/146 , A61B5/1172
Abstract: A detection device includes: a substrate; photoelectric conversion elements provided to the substrate; transistors; and signal lines each of which is between adjacent photoelectric conversion elements. Each detection element includes one of the photoelectric conversion element and the transistors adjacent to the photoelectric conversion element. A first signal line among the signal lines is between the photoelectric conversion element of a first detection element and the photoelectric conversion element of a second detection element adjacent to one side of the first detection element and is coupled to the first detection element and the second detection element. A second signal line among the signal lines is between the photoelectric conversion element of the first detection element and the photoelectric conversion element of a third detection element adjacent to another side of the first detection element and is coupled to the first detection element and the third detection element.
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公开(公告)号：US20220164054A1
公开(公告)日：2022-05-26
申请号：US17666640
申请日：2022-02-08
Applicant: Japan Display Inc.
Inventor： Hayato KURASAWA , Hiroshi MIZUHASHI , Tadayoshi KATSUTA
Abstract: A display device includes a substrate, first electrodes, lines, pixel electrodes, a display functional layer, a common electrode, second electrodes, and a controller. The first electrodes are opposed to the second electrodes with a space therebetween, and an insulating layer is provided between the common electrode and the first and second electrodes. During the display periods, in response to a control signal from the controller, the pixel electrodes are supplied with a pixel signal through the lines, and the common electrode is supplied with a common signal. During the sensing period, in response to the control signal from the controller, the lines are supplied with a first drive signal to generate a magnetic field. The first electrodes are supplied with a second drive signal to generate electrostatic capacitance between themselves and the second electrodes in response to the control signal from the controller, synchronously or asynchronously with the display periods.
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公开(公告)号：US20220115424A1
公开(公告)日：2022-04-14
申请号：US17494918
申请日：2021-10-06
Applicant: Japan Display Inc.
Inventor： Tadayoshi KATSUTA , Yoshitaka OZEKI
IPC: H01L27/146 , G06K9/00
Abstract: According to an aspect, a detection device includes: a substrate; a plurality of photodiodes arranged on the substrate; an insulating film that covers the photodiodes; and a conductive layer provided on the insulating film. Each photodiode includes a plurality of first regions, in each of which a p-type semiconductor layer, an i-type semiconductor layer, and an n-type semiconductor layer are stacked such that the p-type semiconductor layer is directly in contact with the i-type semiconductor layer and the i-type semiconductor layer is directly in contact with the n-type semiconductor layer. The i-type semiconductor layers in the first regions are separated from one another in a plan view. The n-type semiconductor layers in the first regions are separated from one another in the plan view. The conductive layer is coupled to each of the n-type semiconductor layers in the first regions through a contact hole provided in the insulating film.
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