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公开(公告)号：US11854299B2
公开(公告)日：2023-12-26
申请号：US17500147
申请日：2021-10-13
发明人： Hirofumi Kato , Makoto Uchida , Takanori Tsunashima , Takashi Nakamura , Akio Takimoto , Takao Someya , Tomoyuki Yokota
IPC分类号： G06V40/13 , G06V40/12 , A61B5/1172 , G06F21/32 , G06V40/145
CPC分类号： G06V40/1324 , A61B5/1172 , G06F21/32 , G06V40/1341 , G06V40/1365 , G06V40/145
摘要： A detection device includes a plurality of optical sensors arranged in a detection area, a light source configured to emit light that is emitted to an object to be detected and is detected by the optical sensors, and a processor configured to perform processing based on outputs from the optical sensors. The processor is configured to determine, based on the outputs of the respective optical sensors obtained at a cycle of a predetermined period, an optical sensor an output of which is to be employed from among the optical sensors.
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公开(公告)号：US11888080B2
公开(公告)日：2024-01-30
申请号：US17358950
申请日：2021-06-25
发明人： Hirofumi Kato , Takanori Tsunashima , Makoto Uchida , Takashi Nakamura , Akio Takimoto , Takao Someya , Tomoyuki Yokota
IPC分类号： H01L31/12 , G01J1/04 , G01J1/42 , H01L27/146 , H01L31/167 , G06V40/13 , G06T1/00 , G06V40/14 , G06V40/10 , G06V40/70 , G06V40/12
CPC分类号： H01L31/12 , G01J1/0492 , G01J1/4228 , G06T1/0007 , G06V40/1318 , H01L27/14612 , H01L27/14621 , H01L27/14636 , H01L31/167 , A61B2562/0233 , G06V40/1341 , G06V40/14 , G06V40/15 , G06V40/70
摘要： A detection device is provided. The detection device includes a sensor base; a plurality of photoelectric conversion elements that are provided in a detection area of the sensor base and are configured to receive light incident thereon and output signals corresponding to the received light; a plurality of switching elements provided in the respective photoelectric conversion elements; a plurality of gate lines that are coupled to the switching elements and extend in a first direction; a first light source configured to emit first light having a first maximum emission wavelength; and a second light source configured to emit second light having a second maximum emission wavelength.
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公开(公告)号：US11436859B2
公开(公告)日：2022-09-06
申请号：US17233650
申请日：2021-04-19
申请人： Japan Display Inc.
IPC分类号： G06V40/13
摘要： A fingerprint detection device includes a substrate, a plurality of photoelectric conversion elements that are provided to the substrate and each output a signal corresponding to light emitted thereto, a plurality of signal lines coupled to the photoelectric conversion elements, a detection circuit that is electrically coupled to the photoelectric conversion elements through the signal lines, and a signal line selection circuit that switches the number of the signal lines to be coupled to the one detection circuit.
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公开(公告)号：US11386860B2
公开(公告)日：2022-07-12
申请号：US17238962
申请日：2021-04-23
申请人： Japan Display Inc.
发明人： Hirofumi Kato
IPC分类号： G09G3/36 , G09G3/34 , G02F1/1343 , G02F1/1368 , G02F1/1334 , G02F1/137 , G02F1/1362 , F21V8/00
摘要： According to one embodiment, a display device includes a display panel including a display area where first drive areas and second drive areas are alternately disposed, and display function layers which include first display function layers and second display function layers and which are changed to a transparent state and a scattering state, and a control unit. The control unit applies a drive voltage to the first display function layers, in a first field period. The control unit applies the drive voltage to the second display function layers, in a second field period. A polarity of the drive voltage in the first field period is different from a polarity of the drive voltage in the second field period.
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公开(公告)号：US20160231497A1
公开(公告)日：2016-08-11
申请号：US15011936
申请日：2016-02-01
申请人： Japan Display Inc.
发明人： Hirofumi Kato
IPC分类号： F21V8/00 , G09G3/32 , G09G3/34 , G02F1/13 , G02F1/1334
CPC分类号： G02B6/0035 , G02B6/0083 , G02F1/1326 , G02F1/1334 , G02F1/1336 , G02F1/133615 , G02F2001/133601 , G09G3/3406 , G09G3/3473 , G09G2320/0646
摘要： A display apparatus includes an image display panel, a light source device, and a control device. The light source device includes a light source that emits light and a light guide member arranged on the back surface side of the panel as seen from the display surface, receives the light via its side surface with respect to its surface facing the panel, and has divided areas arranged in a direction in which the light travels. Each area includes a light modulation layer brought in a light transmission state or in a light scattering state. The control device brings the layers in the scattering state in respective scattering control periods temporally different from each other. When bringing a light modulation layer in the scattering state, the control device controls the light source device with a drive pattern based on a distance between the side surface and the corresponding area.
摘要翻译： 显示装置包括图像显示面板，光源装置和控制装置。 光源装置包括发光部的光源和从显示面观察配置在面板的背面侧的导光部件，通过其相对于面向面板的面的侧面接收光，并具有 沿着光行进的方向排列的分割区域。 每个区域包括带有光透射状态或光散射状态的光调制层。 控制装置使各层在各个时间上彼此不同的散射控制周期中处于散射状态。 当将光调制层带入散射状态时，控制装置基于侧表面和对应区域之间的距离以驱动图案来控制光源装置。
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公开(公告)号：US11719573B2
公开(公告)日：2023-08-08
申请号：US17010413
申请日：2020-09-02
申请人： Japan Display Inc.
发明人： Hitoshi Tanaka , Masahiro Tada , Takashi Nakamura , Hiroshi Mizuhashi , Fumitaka Gotoh , Hirofumi Kato
IPC分类号： G01J1/44 , H03K17/693 , G01K7/16 , H03K17/687 , H03K19/20 , H01L29/786
CPC分类号： G01J1/44 , G01K7/16 , H03K17/6872 , H03K17/693 , H03K19/20 , H01L29/78633 , H01L29/78675
摘要： Provided are a substrate, an organic material layer provided above the substrate at a position overlapping at least a detection region, a plurality of detection electrodes provided between the substrate and the organic material layer in a direction orthogonal to the substrate, a first switching element provided to each of the detection electrodes, a plurality of gate lines coupled with some first switching elements and extending in a first direction, a plurality of signal lines coupled with some first switching elements and extending in a second direction intersecting the first direction, and a drive circuit configured to supply gate drive signals having potentials determined for the respective gate lines based on a predetermined code to the respective first switching elements through the gate lines.
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公开(公告)号：US11687196B2
公开(公告)日：2023-06-27
申请号：US17951296
申请日：2022-09-23
申请人： Japan Display Inc.
发明人： Hirofumi Kato , Ayato Kitamura
CPC分类号： G06F3/0421 , G06V40/13 , G09G3/3611
摘要： A detection device includes: optical sensors; switching elements, gate lines, and signal lines corresponding to the optical sensors; a detection circuit that is supplied with signals from the optical sensors through the signal lines; and a signal line selection circuit for switching a coupling state between the signal lines and the detection circuit. A drive signal is supplied to the gate lines row by row to bring the switching elements belonging to a predetermined row into a coupled state. The signal line selection circuit couples the signal lines to the detection circuit column by column in a predetermined order in a reading period of the predetermined row. A reset potential is supplied to the optical sensors and the signal lines belonging to the predetermined row after completion of the reading period of the predetermined row and before start of the reading period of a row next to the predetermined row.
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公开(公告)号：US10816843B2
公开(公告)日：2020-10-27
申请号：US16244213
申请日：2019-01-10
申请人： Japan Display Inc.
发明人： Hirofumi Kato
IPC分类号： G02F1/1334 , F21V8/00 , G09G3/34 , G09G3/36 , G02F1/1343 , G02F1/1368 , G02F1/137 , G02F1/1362
摘要： According to one embodiment, a display device includes a display panel including a display area where first drive areas and second drive areas are alternately disposed, and display function layers which include first display function layers and second display function layers and which are changed to a transparent state and a scattering state, and a control unit. The control unit applies a drive voltage to the first display function layers, in a first field period. The control unit applies the drive voltage to the second display function layers, in a second field period. A polarity of the drive voltage in the first field period is different from a polarity of the drive voltage in the second field period.
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公开(公告)号：US11915096B2
公开(公告)日：2024-02-27
申请号：US17885716
申请日：2022-08-11
申请人： Japan Display Inc.
发明人： Hirofumi Kato
CPC分类号： G06K7/1417 , G06V40/1318
摘要： According to an aspect, a detection system includes: a sensor provided with a plurality of photosensors in a detection area; a controller configured to control the sensor; and a data storage configured to store correction value data including correction values for detection values of the photosensors and identification codes of a plurality of the sensors in such a manner that the identification codes are associated one-to-one with the correction value data. The controller is configured to acquire the correction value data corresponding to the identification code of the sensor from the data storage and correct the detection values of the photosensors based on the acquired correction value data.
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公开(公告)号：US10573256B2
公开(公告)日：2020-02-25
申请号：US16352152
申请日：2019-03-13
申请人： Japan Display Inc.
发明人： Hirofumi Kato
IPC分类号： G09G3/34 , G02F1/1335 , F21V8/00 , G02F1/13 , G02F1/1334 , G02F1/1343 , G02F1/137 , G09G3/36
摘要： In a display device, an image display panel updates an image in a frame cycle including an image scanning period and a vertical blanking period, a light modulation layer is disposed at a back of the panel and switched to a scattering or transmission state depending on an electric field applied, a light source emits light which enters the light modulation layer from its side and travels therethrough, electrodes are formed according to divided areas of the light modulation layer arranged in a direction of the light and apply the electric field to the light modulation layer, and a controller drives the electrodes in synchronization with image scanning to switch the divided areas to the scattering state in order during the image scanning period, and drives the electrodes according to distances from the side to control the scattering state on the individual divided areas during the vertical blanking period.
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