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公开(公告)号：US20230017680A1
公开(公告)日：2023-01-19
申请号：US17947398
申请日：2022-09-19
Applicant: Japan Display Inc.
Inventor： Akihiko FUJISAWA , Kaoru ITO , Tsutomu HARADA , Takayuki NAKANISHI
Abstract: According to one embodiment, a display device includes a display panel and a ring-shaped electrode. The display panel includes a display area for displaying an image, a plurality of first electrodes arranged to surround the display area, and at least one second electrode arranged to surround the plurality of first electrodes. The ring-shaped electrode is arranged on the display panel and is arranged at a position overlapping with the second electrode in planar view. The ring-shaped electrode includes a protruding portion overlapping with at least one of the plurality of first electrodes in planar view.
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公开(公告)号：US20220229531A1
公开(公告)日：2022-07-21
申请号：US17714250
申请日：2022-04-06
Applicant: Japan Display Inc.
Inventor： Akihiko FUJISAWA
Abstract: According to one embodiment, a display device includes a display part, a plurality of sensor electrodes and a controller. The display part is configured to display an image. The plurality of sensor electrodes are arranged to surround the display part. The controller is electrically connected to the sensor electrodes, and is configured to detect an object close to or contacting the sensor electrodes. The controller drives at least one of the sensor electrodes as a detection electrode and drives at least one of the sensor electrodes as a drive electrode.
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公开(公告)号：US20210103361A1
公开(公告)日：2021-04-08
申请号：US17061959
申请日：2020-10-02
Applicant: Japan Display Inc.
Inventor： Akihiko FUJISAWA , Teppei YAMADA , Kaoru ITO
Abstract: A technology that can make the touch detection results at corner portions proper is proposed. A display device includes a display panel, a sensor substrate formed on the display panel, and plural drive electrodes and plural detection electrodes extended in a direction so as to intersect with the plural drive electrodes on the sensor substrate. Among the plural drive electrodes, any of the lengths of N first drive electrodes (where N represents the number), which are continuously adjacent to one another, is shorter than any of the lengths of the other drive electrodes. An area where at least one drive electrode among the N first drive electrodes and at least one detection electrode overlap each other is larger than the area of an intersectional portion where any of the other drive electrodes and any of the other detection electrodes overlap each other.
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公开(公告)号：US20240397219A1
公开(公告)日：2024-11-28
申请号：US18672934
申请日：2024-05-23
Applicant: Japan Display Inc.
Inventor： Akihiko FUJISAWA , Kaoru ITO , Daichi ABE
Abstract: A detection device includes a planar detection device comprising a plurality of photodetection elements arranged in a planar configuration, a light source device disposed so as to face the planar detection device, and a light-transmitting mounting substrate that is disposed between the planar detection device and the light source device and configured to mount a plurality of objects to be detected.
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公开(公告)号：US20230169788A1
公开(公告)日：2023-06-01
申请号：US17992048
申请日：2022-11-22
Applicant: Japan Display Inc.
Inventor： Takaaki KONO , Akihiko FUJISAWA
IPC: G06V40/13 , G06V10/145 , H04N25/78
CPC classification number: G06V40/1318 , G06V40/1329 , G06V10/145 , H04N25/78
Abstract: A detection device includes a sensor area provided with a plurality of detection elements each comprising a photoelectric conversion element in a detection area, and a detector configured to detect a potential difference between a voltage generated in a first detection element and a voltage generated in a second detection element adjacent to the first detection element in the detection area.
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Patent Agency Ranking
公开(公告)号：US20230088935A1
公开(公告)日：2023-03-23
申请号：US17989851
申请日：2022-11-18
Applicant: Japan Display Inc.
Inventor： Kaoru ITO , Akihiko FUJISAWA
Abstract: A liquid crystal display device includes a liquid crystal layer provided between a first substrate and a second substrate, a detection electrode configured to detect an external proximity object, a plurality of pixels overlapping the detection electrode in plan view, and a detection circuit configured to detect a detected capacitance value generated in the detection electrode. A liquid crystal capacitance value generated between each of the pixels and the detection electrode includes a first capacitance value at a first gradation and a second capacitance value at a second gradation smaller than the first gradation, and the detection circuit corrects the detected capacitance value based on a ratio between number of pixels with the first gradation and number of pixels with the second gradation out of the pixels.
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公开(公告)号：US20220236835A1
公开(公告)日：2022-07-28
申请号：US17579708
申请日：2022-01-20
Applicant: Japan Display Inc.
Inventor： Kaoru ITO , Akihiko FUJISAWA
IPC: G06F3/044 , G02F1/1339 , G02F1/1333
Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a sealant, a first electrode, an insulating film and a second electrode. The sealant bonds the first substrate and the second substrate and is provided in a peripheral area surrounding a display area. The first electrode is provided on the first substrate in the peripheral area. The insulating film covers the first electrode. The second electrode is provided on the second substrate in the peripheral area. The sealant contains a conductive member. At least one of the first electrode and the second electrode includes a plurality of fine line portions in an area where the first electrode, the insulating film, the sealant, and the second electrode are overlapped in planar view.
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公开(公告)号：US20220229515A1
公开(公告)日：2022-07-21
申请号：US17577492
申请日：2022-01-18
Applicant: Japan Display Inc.
Inventor： Akihiko FUJISAWA , Kaoru ITO , Daichi ABE
Abstract: According to one embodiment, a display device includes a first substrate, a second substrate opposed to the first substrate, detection electrodes provided to surround a display area where an image is displayed, and a common electrode provided over an entire surface of the display area. The common electrode includes a first lead wiring line that extends to a peripheral area around the display area, along a boundary part between a first detection electrode, which is one of the detection electrodes, and a second detection electrode adjacent to the first detection electrode. A capacitance formed between the first lead wiring line and the first detection electrode is substantially equal to a capacitance formed between the first lead wiring line and the second detection electrode.
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公开(公告)号：US20220171516A1
公开(公告)日：2022-06-02
申请号：US17674517
申请日：2022-02-17
Applicant: Japan Display Inc.
Inventor： Akihiko FUJISAWA , Daichi ABE , Kaoru ITO
Abstract: A technology which can improve the accuracy of touch detection is proposed. A display device includes: a touch panel including plural drive electrodes and plural detection electrodes; plural peripheral wirings; and plural switching elements each of which is disposed between a detection electrode and the corresponding peripheral wiring and that is connected to the detection electrode and the corresponding peripheral electrode. The touch panel executes detection by means of a mutual detection scheme using the plural drive electrodes and the plural detection electrodes. In a condition in which a predefined voltage is applied to the peripheral wirings when the plural switching elements are in an off-state, the voltages of the drive electrodes are changed, and subsequently a condition in which the changes of the voltages of the drive electrodes can be detected from the peripheral wirings is set, and the switching elements are turned from off to on.
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公开(公告)号：US20220171500A1
公开(公告)日：2022-06-02
申请号：US17672234
申请日：2022-02-15
Applicant: Japan Display Inc.
Inventor： Akihiko FUJISAWA , Teppei YAMADA , Kaoru ITO
Abstract: A display device is provided and includes display panel; sensor substrate formed on display panel; and M drive electrodes and detection electrodes extended in direction so as to intersect with M drive electrodes, wherein among M drive electrodes, any of lengths of N first drive electrodes, which are continuously adjacent to one another, is shorter than any of lengths of other N second drive electrodes which are continuously adjacent to one another, and number of detection electrodes which intersect with N first drive electrodes is larger than number of detection electrodes which intersect with N second drive electrodes.
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