-
公开(公告)号：US11774814B2
公开(公告)日：2023-10-03
申请号：US17521110
申请日：2021-11-08
Applicant: Japan Display Inc.
Inventor： Kaoru Ito , Akihiko Fujisawa
IPC: G02F1/1362 , G04G21/08 , G06F3/041 , G06F3/044
CPC classification number: G02F1/136218 , G02F1/136286 , G04G21/08 , G06F3/0412 , G06F3/044
Abstract: According to one embodiment, a display device includes a plurality of detection electrodes, a first shield electrode and a second shield electrode. The plurality of detection electrodes are disposed in a peripheral area surrounding a display area configured to display an image. The first shield electrode is disposed on a first substrate and in at least the peripheral area, the first shield electrode having a predetermined fixed potential. The second shield electrode is disposed on a second substrate and in at least the peripheral area, the second shield electrode having the predetermined fixed potential. The first shield electrode and the second shield electrode are disposed, in a plan view, on a side of the display area with respect to each of the detection electrodes.
-
公开(公告)号：US11762496B2
公开(公告)日：2023-09-19
申请号：US17674517
申请日：2022-02-17
Applicant: Japan Display Inc.
Inventor： Akihiko Fujisawa , Daichi Abe , Kaoru Ito
CPC classification number: G06F3/04164 , G06F3/0418 , G06F3/0446 , G06F3/04166 , G06V40/1306
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.
-
公开(公告)号：US11656724B2
公开(公告)日：2023-05-23
申请号：US17406397
申请日：2021-08-19
Applicant: Japan Display Inc.
Inventor： Akihiko Fujisawa , Kaoru Ito , Daichi Abe
IPC: G06F3/044 , G06F3/041 , G04G21/08 , G02F1/1333
CPC classification number: G06F3/044 , G02F1/13338 , G04G21/08 , G06F3/0412
Abstract: According to one embodiment, a display device includes a first substrate, a second substrate opposing the first substrate, a liquid crystal layer, at least one first detection electrode disposed in a display area and a plurality of second detection electrodes disposed in a peripheral area. In a display period in which images are displayed on the display area, a predetermined voltage is applied to the first detection electrode to drive the liquid crystal layer, and in a period in which the liquid crystal layer is not driven, the first detection electrode is set to a state of being not electrically connected to anywhere or being connected to a predetermined potential with an impedance of 50 kΩ or higher.
-
公开(公告)号：US11269469B2
公开(公告)日：2022-03-08
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.
-
公开(公告)号：US11740753B2
公开(公告)日：2023-08-29
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 , G02F1/1362
CPC classification number: G06F3/0448 , G02F1/1339 , G02F1/13338 , G02F1/136286 , G06F2203/04107
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.
-
Patent Agency Ranking
公开(公告)号：US11567615B2
公开(公告)日：2023-01-31
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.
-
公开(公告)号：US11262867B2
公开(公告)日：2022-03-01
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.
-
公开(公告)号：US11899883B2
公开(公告)日：2024-02-13
申请号：US17947559
申请日：2022-09-19
Applicant: Japan Display Inc.
Inventor： Akihiko Fujisawa , Kaoru Ito
IPC: G06F3/041 , G06F3/044 , G02F1/1333 , G02F1/1343 , G04G17/04 , G04G21/08
CPC classification number: G06F3/0418 , G02F1/13338 , G02F1/134309 , G04G17/04 , G04G21/08 , G06F3/044 , G06F3/0412 , G06F3/04166 , G06F2203/04107
Abstract: According to one embodiment, a display device includes a display area, a plurality of sensor electrodes and a shield electrode. The display panel includes a first substrate, a second substrate opposed to the first substrate, a liquid crystal layer sealed between the first substrate and the second substrate, a pixel electrode, and a counter-electrode. The plurality of sensor electrodes are arranged to surround the display area. The shield electrode is arranged between the plurality of sensor electrodes and the pixel electrode or the counter-electrode located closest to a boundary between the display area and a non-display area surrounding the display area, in planar view. A predetermined reference voltage is applied to the shield electrode.
-
公开(公告)号：US11687207B2
公开(公告)日：2023-06-27
申请号：US17672234
申请日：2022-02-15
Applicant: Japan Display Inc.
Inventor： Akihiko Fujisawa , Teppei Yamada , Kaoru Ito
IPC: G06F3/044 , G06F3/041 , G06V40/13 , G06V10/147
CPC classification number: G06F3/0446 , G06F3/0445 , G06F3/0448 , G06F3/04166 , G06V10/147 , G06V40/1306
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.
-
公开(公告)号：US11899880B2
公开(公告)日：2024-02-13
申请号：US17989851
申请日：2022-11-18
Applicant: Japan Display Inc.
Inventor： Kaoru Ito , Akihiko Fujisawa
CPC classification number: G06F3/041662 , G06F3/044 , G06F3/0412
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.
-
-
-
-
-
-
-
-
-
Search Results
11
records
(took 0.015 seconds)
