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公开(公告)号：US20230205345A1
公开(公告)日：2023-06-29
申请号：US18118309
申请日：2023-03-07
Applicant: Japan Display Inc.
Inventor： Akihiko FUJISAWA , Kaoru ITO , Daichi ABE
CPC classification number: G06F3/0412 , G04G21/08 , G06F3/0416 , G06F3/044
Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a display area, at least one first sensor electrode, a second sensor electrode and a detection circuit. The second substrate is opposed to the first substrate. The display area displays an image. The first sensor electrode is disposed in a peripheral area surrounding the display area. The second sensor electrode is disposed at a position overlapping the first sensor electrode in planar view. The detection circuit is electrically connected to the first sensor electrode. The second sensor electrode is set to a state of being electrically connected to nothing or a state of being biased by resistance of 50 kΩ or greater. The second sensor electrode is larger in area than the first sensor electrode.
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公开(公告)号：US20250012713A1
公开(公告)日：2025-01-09
申请号：US18763030
申请日：2024-07-03
Applicant: Japan Display Inc.
Inventor： Kaoru ITO , Akihiko FUJISAWA , Daichi ABE
Abstract: According to an aspect, a detection device includes: a sensor panel having a detection region provided with sensors that are arranged two-dimensionally and each of which is configured to detect light and generates an output corresponding to a degree of detected light; and a light source having point light sources that are arranged in a light emitting region provided corresponding to the detection region. Each point light source is turned on and the outputs from the sensors are received in first detection processing. Each point light source is turned on at a luminance different from the luminance in the first detection processing and the outputs from the sensors are received in second detection processing. The luminance of the point light source in the second detection processing is based on a relation between the luminance of the point light source and the outputs from the sensors in the first detection processing.
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公开(公告)号：US20230289002A1
公开(公告)日：2023-09-14
申请号：US18119561
申请日：2023-03-09
Applicant: Japan Display Inc.
Inventor： Daichi ABE , Akihiko FUJISAWA
IPC: G06F3/041 , G02F1/1362
CPC classification number: G06F3/0412 , G02F1/136218 , G06F2203/04101
Abstract: According to one embodiment, a display device includes a display area for displaying an image, a plurality of detection electrodes and a movable electrode. The plurality of detection electrodes are disposed in a peripheral area surrounding the display area. The movable electrode is disposed in such a way as to surround the detection electrodes and is movable around the detection electrodes. The movable electrode has a length corresponding to a length of each of the detection electrodes in a peripheral direction.
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公开(公告)号：US20240414827A1
公开(公告)日：2024-12-12
申请号：US18735991
申请日：2024-06-06
Applicant: Japan Display Inc.
Inventor： Kaoru ITO , Akihiko FUJISAWA , Daichi ABE
Abstract: A detection apparatus includes a sensor, a detection circuit, and a light source configured to emit light in a first color, a second color, and a third color. The detection circuit acquires a first output, a second output, and a third output that are outputs of the sensor corresponding to a period when the light in the first color is emitted, a period when the light in the second color is emitted, and a period when the light in the third color is emitted, respectively. The detection circuit adjusts at least two or more of the first, second, and third outputs based on adjustment coefficients derived so as to equalize a fourth output, a fifth output, and a sixth output. The fourth, fifth, and sixth outputs are outputs obtained when the sensor is directly irradiated with the light in the first, second, and third colors from the light source, respectively.
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公开(公告)号：US20230305500A1
公开(公告)日：2023-09-28
申请号：US18124117
申请日：2023-03-21
Applicant: Japan Display Inc.
Inventor： Kaoru ITO , Akihiko FUJISAWA , Daichi ABE
CPC classification number: G04G21/08 , G06F3/04164 , G06F3/041662 , G06F3/0443 , G06F3/0412
Abstract: According to one embodiment, a display device includes a display area, a peripheral area and a plurality of detection electrodes. The display area includes a display element. The peripheral area surrounds the display area. The plurality of detection electrodes are arranged in the peripheral area. The plurality of detection electrodes are each electrically connected to at least one other detection electrode that is not adjacent thereto.
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Patent Agency Ranking
公开(公告)号：US20210303124A1
公开(公告)日：2021-09-30
申请号：US17217058
申请日：2021-03-30
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：US20250012631A1
公开(公告)日：2025-01-09
申请号：US18761798
申请日：2024-07-02
Applicant: Japan Display Inc.
Inventor： Kaoru ITO , Akihiko FUJISAWA , Daichi ABE
Abstract: According to an aspect, a detection device includes: sensors each of which includes a photodiode configured to detect light and is configured to generate an output corresponding to a degree of the detected light; and a detection circuit configured to receive the output of each sensor. The photodiode has an anode to which a reference potential is applied and a cathode to which a reset potential higher than the reference potential is applied. Each sensor is configured to generate the output corresponding to the degree of the light detected by the photodiode after the reset potential is applied to the cathode and before the reset potential is applied to the cathode again. The outputs of the sensors are received in a first period and a second period after the first period. The reference potential and the reset potential in the first period are different from those in the second period.
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公开(公告)号：US20240395832A1
公开(公告)日：2024-11-28
申请号：US18671231
申请日：2024-05-22
Applicant: Japan Display Inc.
Inventor： Akihiko FUJISAWA , Kaoru ITO , Daichi ABE , Tomoyuki ISHIHARA
IPC: H01L27/146 , H01L27/15
Abstract: A detection device includes a planar detection device includes 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 on which a plurality of objects to be detected are mounted, the light-transmitting mounting substrate being disposed between the planar detection device and the light source device.
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公开(公告)号：US20240328855A1
公开(公告)日：2024-10-03
申请号：US18603479
申请日：2024-03-13
Applicant: Japan Display Inc.
Inventor： Kaoru ITO , Akihiko FUJISAWA , Daichi ABE
CPC classification number: G01J1/44 , G01J1/08 , G01J2001/446 , G01J2001/448
Abstract: According to an aspect, a detection device includes: a planar detection device including photodetection elements; point light sources provided correspondingly to the photodetection elements; a light directivity control element disposed between the point light sources and the photodetection elements; and a detection circuit electrically coupled to the photodetection elements. Each point light source corresponds to at least one of the photodetection elements. In a light amount setting mode, the point light sources are lit up at different light amounts; the photodetection elements output sensor values corresponding to the different light amounts; the sensor values that are detected are compared with a preset target sensor value; and light amounts for detection of the point light sources are set. In a detection mode, the point light sources are lit up at the set light amounts for detection; and the photodetection elements output sensor values corresponding to the light amounts for detection.
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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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