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公开(公告)号：US20160299279A1
公开(公告)日：2016-10-13
申请号：US15093027
申请日：2016-04-07
Applicant: Japan Display Inc.
Inventor： Toshinori Uehara , Hayato Kurasawa , Masashi Mitsui
IPC: F21V8/00
CPC classification number: G02B6/0061 , G02B6/0036 , G02B6/004 , G02B6/0055 , G02B6/0065
Abstract: According to one embodiment, a display device includes a display panel, a light source, a lightguide, and reflective elements. The lightguide includes a first end facing the light source, a first surface opposed to the display panel, and a second surface. The reflective elements are disposed inside the lightguide, the elements configured to reflect light passing through the first end to spread in the lightguide and to transmit the light through the first surface. Reflective elements are arranged to be apart from the first or second surface with a certain distance and has a reflective surface facing the first surface and projects toward the second surface, the reflective surface is inclined such that the light from the first end can be irradiated to the first surface.
Abstract translation: 根据一个实施例，显示装置包括显示面板，光源，光导和反射元件。 光导包括面向光源的第一端，与显示面板相对的第一表面和第二表面。 反射元件设置在光导内部，元件被配置为反射通过第一端的光，以在光导中扩散并透射光穿过第一表面。 反射元件被布置成与第一或第二表面分开一定距离并且具有面向第一表面的反射表面并且朝向第二表面突出，反射表面倾斜使得来自第一端的光可以照射到 第一个表面。
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公开(公告)号：US11893194B2
公开(公告)日：2024-02-06
申请号：US17951172
申请日：2022-09-23
Applicant: Japan Display Inc.
Inventor： Koichi Miyasaka , Yoshikatsu Imazeki , Yoichi Kamijo , Shuichi Osawa , Toshinori Uehara
IPC: G06F3/044 , G06V40/13 , G02F1/1333 , G02F1/1343
CPC classification number: G06F3/0446 , G02F1/13338 , G02F1/134309 , G06V40/1306
Abstract: According to an aspect, a detection device includes: drive electrodes; detection electrodes; and dummy electrodes in a floating state. The drive electrodes include a first electrode extending in a first direction, and a second electrode disposed at a predetermined interval from the first electrode in a second direction intersecting the first direction. The detection electrodes include a third electrode extending in the second direction. The dummy electrodes include a fourth electrode disposed at a predetermined interval from the third electrode in the first direction. The first electrode includes a first extension part, a second extension part, and a first coupling part. The second electrode includes a third extension part, a fourth extension part, and a second coupling part. The third electrode includes a fifth extension part, a sixth extension part, and a third coupling part. The fourth electrode includes a seventh extension part, and an eighth extension part.
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公开(公告)号：US11562595B2
公开(公告)日：2023-01-24
申请号：US17187101
申请日：2021-02-26
Applicant: Japan Display Inc.
Inventor： Fumihito Shibano , Hiroshi Mizuhashi , Toshinori Uehara , Kimiyo Nonoyama , Hayato Kurasawa
Abstract: A fingerprint sensor is provided and includes substrate; sensor electrodes on substrate; first switches coupled to sensor electrodes; organic layer covering sensor electrodes; control line drive circuit in first direction; signal line drive circuit in second direction orthogonal to first direction; signal lines coupled to first switches; control lines coupling first switches to control line drive circuit; sensor drive electrode surrounding sensor electrodes; second switches between signal line drive circuit and signal lines; and first number of third switches between signal line drive circuit and first number of second switches, wherein distance of sensor drive electrode from surface of substrate is larger than distance of sensor electrodes from surface of substrate, and wherein first number is less than number of all second switches.
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公开(公告)号：US11073930B2
公开(公告)日：2021-07-27
申请号：US16741857
申请日：2020-01-14
Applicant: Japan Display Inc.
Inventor： Hiroshi Mizuhashi , Hayato Kurasawa , Yoshitoshi Kida , Toshinori Uehara , Takayuki Nakanishi
Abstract: A display device comprises a first power supply line supplying a first potential, a second power supply line supplying a second potential, a third power supply line supplying a touch driving signal, and a display unit including a plurality of sub-pixels. The display unit comprises a plurality of first electrodes respectively provided in the plurality of sub-pixels and electrically connected to the first power supply line, a second electrode provided to be common among the plurality of sub-pixels and electrically connected to the second power supply line, a light emitting layer provided between the first electrode and the second electrode, a plurality of third electrodes electrically connected to the third power supply line, and a signal control circuit supplying a signal synchronized with a touch driving signal to the second electrode in a period in which a touch driving signal is supplied to the plurality of third electrodes.
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公开(公告)号：US10977472B2
公开(公告)日：2021-04-13
申请号：US16139337
申请日：2018-09-24
Applicant: Japan Display Inc.
Inventor： Yuji Suzuki , Toshinori Uehara , Hayato Kurasawa
Abstract: According to an aspect, a detection device includes: an insulating substrate including a plurality of detection electrodes; a transmission conductor disposed adjacent to the detection electrodes; a drive signal generator coupled to the transmission conductor; and a detector coupled to the detection electrodes. The drive signal generator generates a detection drive signal and supplies the detection drive signal to the transmission conductor. The detector detects a detection signal corresponding to a change in capacitance in the detection electrodes.
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Patent Agency Ranking
公开(公告)号：US10969920B2
公开(公告)日：2021-04-06
申请号：US16371946
申请日：2019-04-01
Applicant: Japan Display Inc.
Inventor： Hayato Kurasawa , Toshinori Uehara , Yuji Suzuki
Abstract: According to an aspect, a display device includes: a first substrate; a second substrate facing the first substrate; a display function layer between the first substrate and the second substrate and displaying an image; first electrodes in a detection region of the first substrate; second electrodes in the detection region above the second substrate; a first electrode selection circuit in a peripheral region outside the detection region of the first substrate; and a second electrode selection circuit in a region overlapping with the peripheral region above the second substrate. The first electrode selection circuit selects some of the first electrodes, and supplies detection drive signals having phases determined on the basis of a certain code to the selected first electrodes. The second electrode selection circuit selects some of the second electrodes on the basis of a certain code, and couples the selected second electrodes to a single output signal line.
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公开(公告)号：US10963663B2
公开(公告)日：2021-03-30
申请号：US16845911
申请日：2020-04-10
Applicant: Japan Display Inc.
Inventor： Fumihito Shibano , Hiroshi Mizuhashi , Toshinori Uehara , Kimiyo Nonoyama , Hayato Kurasawa
Abstract: A fingerprint sensor is provided and includes a substrate; sensor electrodes arranged in a matrix on the substrate; switches coupled to the sensor electrodes; a control line drive circuit; a signal line drive circuit; signal lines coupling the signal line drive circuit to the sensor electrodes through the switches; control lines transmitting a selection signal to the switches from the control line drive circuit; and a sensor drive electrode surrounding the matrix of the sensor electrodes, wherein a distance of the sensor drive electrode from a surface of the substrate is larger than a distance of the sensor electrodes from the surface of the substrate.
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公开(公告)号：US10713462B2
公开(公告)日：2020-07-14
申请号：US16261063
申请日：2019-01-29
Applicant: Japan Display Inc.
Inventor： Hayato Kurasawa , Toshinori Uehara , Hiroshi Mizuhashi
IPC: G06K9/00
Abstract: A fingerprint detection device includes: a substrate having a first surface and a second surface on an opposite side of the first surface, the first surface serving as a detection surface configured to detect unevenness of an object in contact or in proximity; a detection electrode provided on the second surface side of the substrate and configured to detect unevenness of a finger in contact or in proximity on the basis of an electrostatic capacitance change; and a drive circuit provided on the second surface side of the substrate and configured to supply a drive signal to the detection electrode.
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公开(公告)号：US20200150810A1
公开(公告)日：2020-05-14
申请号：US16741857
申请日：2020-01-14
Applicant: Japan Display Inc.
Inventor： Hiroshi Mizuhashi , Hayato Kurasawa , Yoshitoshi Kida , Toshinori Uehara , Takayuki Nakanishi
Abstract: A display device comprises a first power supply line supplying a first potential, a second power supply line supplying a second potential, a third power supply line supplying a touch driving signal, and a display unit including a plurality of sub-pixels. The display unit comprises a plurality of first electrodes respectively provided in the plurality of sub-pixels and electrically connected to the first power supply line, a second electrode provided to be common among the plurality of sub-pixels and electrically connected to the second power supply line, a light emitting layer provided between the first electrode and the second electrode, a plurality of third electrodes electrically connected to the third power supply line, and a signal control circuit supplying a signal synchronized with a touch driving signal to the second electrode in a period in which a touch driving signal is supplied to the plurality of third electrodes.
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公开(公告)号：US10460143B2
公开(公告)日：2019-10-29
申请号：US15464642
申请日：2017-03-21
Applicant: Japan Display Inc.
Inventor： Toshinori Uehara , Hiroshi Mizuhashi , Toshio Soya
IPC: G06F3/041 , G06K9/00 , G02F1/133 , G02F1/1333 , G02F1/1362 , G02F1/1368 , G06F3/044 , G06K9/20
Abstract: According to one embodiment, a sensor-equipped display device includes a scanning line, a signal line, a pixel switch, a pixel electrode, a first common electrode, a detection electrode, a current mirror circuit, and an integrator. The integrator includes an operational amplifier including an inverting input terminal and a noninverting input terminal.
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