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公开(公告)号：US20190361567A1
公开(公告)日：2019-11-28
申请号：US16532072
申请日：2019-08-05
Applicant: Japan Display Inc.
Inventor： Takafumi SUZUKI , Shota HOSAKA , Koji NOGUCHI , Yasuyuki TERANISHI
Abstract: A force detection apparatus includes: a force detector that includes an electrode and a conductor facing the electrode across a first and a second layers and outputs a force signal value before correction; and a force detection controller outputting a force signal value after correction having a linear relationship with a force. In a first range of force in which the first layer is deformed and the second layer is not deformed, the force detection controller calculates the force signal value after correction, based on a product of the force and a first constant. In a second range of force in which the first and second layers are deformed, the force detection controller calculates the force signal value after correction, based on a sum of a product of a threshold and the first constant and a product of a difference between the force and the threshold and a second constant.
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公开(公告)号：US20180348950A1
公开(公告)日：2018-12-06
申请号：US15963264
申请日：2018-04-26
Applicant: Japan Display Inc.
Inventor： Takayuki NAKANISHI , Naoki TAKADA , Shota HOSAKA
CPC classification number: G06F3/0416 , G06F3/0412 , G06F3/044 , G06F2203/04107 , G06F2203/04108
Abstract: A detection device and a display device include first electrodes, second electrodes, a detector, and a coupling circuit. The first electrodes are disposed side by side in a first direction and a second direction intersecting the first direction. The second electrodes are disposed on the side facing the first electrodes and extend in the second direction. The detector receives a first detection signal output from the second electrodes based on changes in capacitance between the first electrodes and the second electrodes or a second detection signal output from the first electrodes based on changes in capacitance in the first electrodes.
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公开(公告)号：US20230072065A1
公开(公告)日：2023-03-09
申请号：US17988367
申请日：2022-11-16
Applicant: Japan Display Inc.
Inventor： Takayuki NAKANISHI , Naoki TAKADA , Fumitaka GOTOH , Shota HOSAKA
IPC: G06F3/044 , H03K17/96 , G06F3/041 , H03K17/955
Abstract: A proximity sensor is arranged with a first electrode input with a first signal, a second electrode input with a second signal different from the first signal, a third electrode arranged closer to the first electrode than the second electrode, and the second signal has a reverse phase of the first signal.
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公开(公告)号：US20190171326A1
公开(公告)日：2019-06-06
申请号：US16261015
申请日：2019-01-29
Applicant: Japan Display Inc.
Inventor： Takafumi SUZUKI , Shota HOSAKA , Yosuke NAKAMORI
IPC: G06F3/041 , F21V8/00 , G02F1/1343 , G06F3/044 , H01L27/32
CPC classification number: G06F3/0414 , G02B6/0046 , G02B6/0055 , G02F1/13338 , G02F1/134363 , G02F2001/134372 , G06F3/0412 , G06F3/0416 , G06F3/044 , G06F2203/04105 , G06F2203/04108 , H01L27/323 , H01L51/5206 , H01L51/5221
Abstract: According to an aspect, a force detection apparatus includes: a first electrode facing an input surface to which an object to be detected applies a force; a second electrode facing the first electrode across a first layer deformable by the force; a conductor facing the second electrode across a second layer deformable by the force; and a force detection controller calculates a force signal value indicating the force, based on a first influence amount and a second influence amount, the first influence amount being an amount of influence added by the force to first capacitance between the first electrode and the second electrode, and the second influence amount being an amount of influence added by the force to second capacitance between the second electrode and the conductor.
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公开(公告)号：US20180095587A1
公开(公告)日：2018-04-05
申请号：US15722560
申请日：2017-10-02
Applicant: Japan Display Inc.
Inventor： Hayato KURASAWA , Naoki TAKADA , Shota HOSAKA , Toshihiko TANAKA , Chihiro TANAKA , Taiki KASAI
CPC classification number: G06F3/0416 , G06F3/0412 , G06F3/044 , G06F2203/04107 , G06F2203/04108 , G09G3/3648 , G09G3/3655
Abstract: A display apparatus includes a first substrate, a second substrate, a display functional layer, first electrodes, second electrodes, third electrodes, and a drive circuit. The second substrate faces the first substrate. The display functional layer is provided between the first substrate and the second substrate and used to display an image in a display area. The first electrodes are provided in the display area between the first substrate and the second substrate. The second electrodes are provided, facing the first electrodes, in the display area on the surface of the second substrate. The third electrodes are provided in a frame area on the outer side of the display area. The drive circuit supplies a first drive signal to at least one of the first electrodes and the second electrodes.
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Patent Agency Ranking
公开(公告)号：US20180032209A1
公开(公告)日：2018-02-01
申请号：US15661248
申请日：2017-07-27
Applicant: Japan Display Inc.
Inventor： Takafumi SUZUKI , Shota HOSAKA , Koji NOGUCHI , Yasuyuki TERANISHI
CPC classification number: G06F3/0418 , G01L1/14 , G01L1/146 , G06F3/0414 , G06F3/0416 , G06F3/044 , G06F2203/04108
Abstract: A force detection apparatus includes: a force detector that includes an electrode and a conductor facing the electrode across a first and a second layers and outputs a force signal value before correction; and a force detection controller outputting a force signal value after correction having a linear relationship with a force. In a first range of force in which the first layer is deformed and the second layer is not deformed, the force detection controller calculates the force signal value after correction, based on a product of the force and a first constant. In a second range of force in which the first and second layers are deformed, the force detection controller calculates the force signal value after correction, based on a sum of a product of a threshold and the first constant and a product of a difference between the force and the threshold and a second constant.
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公开(公告)号：US20210382571A1
公开(公告)日：2021-12-09
申请号：US17410475
申请日：2021-08-24
Applicant: Japan Display Inc.
Inventor： Takayuki NAKANISHI , Naoki TAKADA , Fumitaka GOTOH , Shota HOSAKA
IPC: G06F3/044 , H03K17/96 , G06F3/041 , H03K17/955
Abstract: A proximity sensor is arranged with a first electrode input with a first signal, a second electrode input with a second signal different from the first signal, a third electrode arranged closer to the first electrode than the second electrode, and the second signal has a reverse phase of the first signal.
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公开(公告)号：US20200285333A1
公开(公告)日：2020-09-10
申请号：US16881300
申请日：2020-05-22
Applicant: Japan Display Inc.
Inventor： Takayuki NAKANISHI , Naoki TAKADA , Fumitaka GOTOH , Shota HOSAKA
IPC: G06F3/044 , H03K17/96 , G06F3/041 , H03K17/955
Abstract: A proximity sensor is arranged with a first electrode input with a first signal, a second electrode input with a second signal different from the first signal, a third electrode arranged closer to the first electrode than the second electrode, and the second signal has a reverse phase of the first signal.
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9.发明申请公开(公告)号：US20190339805A1
公开(公告)日：2019-11-07
申请号：US16511793
申请日：2019-07-15
Applicant: Japan Display Inc.
Inventor： Takafumi SUZUKI , Shota HOSAKA , Yosuke NAKAMORI
IPC: G06F3/041 , G06F3/044 , G02F1/1333 , G02F1/1343
Abstract: A force detection apparatus is provided and includes a first electrode facing an input surface to which an object to be detected applies force, and configured to be supplied with a reference potential; a second electrode and a third electrode facing the first electrode; a first conductor arranged between the first electrode, and the second and third electrodes, and configured to be supplied with a drive signal; a first dielectric layer arranged between the first electrode and the first conductor; and a second dielectric layer arranged between the first conductor, and the second and third electrodes, wherein the second electrode is configured to be supplied with the reference potential, and wherein a signal that is same as the drive signal is supplied in synchronization with the drive signal to the third electrode.
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10.发明申请公开(公告)号：US20180039367A1
公开(公告)日：2018-02-08
申请号：US15665761
申请日：2017-08-01
Applicant: Japan Display Inc.
Inventor： Takafumi SUZUKI , Shota HOSAKA , Yosuke NAKAMORI
IPC: G06F3/041 , G02F1/1333 , G06F3/044 , G02F1/1343
CPC classification number: G06F3/0414 , G02F1/13338 , G02F1/1343 , G06F3/0412 , G06F3/0416 , G06F3/044
Abstract: According to an aspect, a force detection apparatus includes: a first electrode facing an input surface to which an object to be detected applies force, and configured to be supplied with a drive signal; a conductor facing the first electrode, and supplied with a reference potential; a second electrode and a third electrode arranged between the first electrode and the conductor; a first dielectric layer arranged between the first electrode, and the second electrode and the third electrode; and a second dielectric layer arranged between the second electrode and the third electrode, and the conductor. The second electrode is supplied with the reference potential. A signal that is the same as the drive signal is supplied in synchronization with the drive signal to the third electrode.
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