公开(公告)号：US10121420B2

公开(公告)日：2018-11-06

申请号：US15421554

申请日：2017-02-01

申请人： Japan Display Inc.

发明人： Hirofumi Kato

IPC分类号： G09G3/34 ,  G02F1/1334 ,  G02F1/1343 ,  G02F1/13 ,  G09G3/36 ,  G02F1/137

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.

公开(公告)号：US10283060B2

公开(公告)日：2019-05-07

申请号：US16154256

申请日：2018-10-08

申请人： Japan Display Inc.

发明人： Hirofumi Kato

IPC分类号： G02F1/13 ,  G09G3/34 ,  G09G3/36 ,  G02F1/137 ,  G02F1/1334 ,  G02F1/1343

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.

公开(公告)号：US09804317B2

公开(公告)日：2017-10-31

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： G09G5/02 ,  F21V8/00 ,  G02F1/13 ,  G02F1/1334 ,  G09G3/34

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.

公开(公告)号：US09721503B2

公开(公告)日：2017-08-01

申请号：US14753733

申请日：2015-06-29

申请人： Japan Display Inc.

发明人： Hirofumi Kato ,  Takayuki Nakanishi ,  Tatsuya Yata

IPC分类号： G09G3/3233

CPC分类号： G09G3/3233 ,  G09G2300/0842 ,  G09G2320/0233 ,  G09G2320/0276 ,  G09G2320/029 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2320/0673

摘要： According to one embodiment, a display device includes a plurality of pixels arranged in a matrix on a substrate, each including a luminescent element and a drive transistor configured to supply current to the luminescent element for light emission, and a panel characteristics correction unit configured to correct for display a video signal supplied from outside, to be supplied to a respective one of the pixels, and the panel characteristics correction unit includes an EL characteristics correction unit configured to correct the video signal with inverse luminescent characteristics of the luminescent element, and a TFT characteristics correction unit configured to correct the video signal with inverse drive characteristics of the drive transistor.

公开(公告)号：US12045421B2

公开(公告)日：2024-07-23

申请号：US18196252

申请日：2023-05-11

申请人： Japan Display Inc.

发明人： Hirofumi Kato ,  Ayato Kitamura

IPC分类号： G06V40/13 ,  G06F3/042 ,  G09G3/36

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.

公开(公告)号：US12035476B2

公开(公告)日：2024-07-09

申请号：US17718919

申请日：2022-04-12

申请人： Japan Display Inc.

发明人： Hirofumi Kato ,  Yoshitaka Kojima

IPC分类号： H05K1/18

CPC分类号： H05K1/181 ,  H05K1/189 ,  H05K2201/10151

摘要： A detection device includes a sensor substrate provided with a plurality of photosensors, a control board provided with a control circuit configured to control the photosensors, and a flexible printed circuit board provided with wiring configured to electrically couple the sensor substrate to the control board. The flexible printed circuit board is provided with a plurality of cutting indication lines for changing a length between the sensor substrate and the flexible printed circuit board.

公开(公告)号：US11017737B2

公开(公告)日：2021-05-25

申请号：US17028374

申请日：2020-09-22

申请人： Japan Display Inc.

发明人： Hirofumi Kato

IPC分类号： G02F1/1334 ,  G09G3/34 ,  G09G3/36 ,  G02F1/1343 ,  G02F1/1368 ,  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.

公开(公告)号：US10453403B2

公开(公告)日：2019-10-22

申请号：US15846782

申请日：2017-12-19

申请人： Japan Display Inc.

发明人： Hirofumi Kato

IPC分类号： G09G3/34 ,  G02F1/1334 ,  G02F1/137 ,  G02F1/1343 ,  G02F1/1335 ,  G09G3/36 ,  G09G3/20

摘要： According to one embodiment, a display device includes a display panel, a light source unit, and a controller which controls the display panel and the light source unit, wherein the controller applies scattering voltage between a common electrode and a first pixel electrode in a first area and between the common electrode and a second pixel electrode in a second area, and a liquid crystal layer scatters light in a first display color in the first area, and scatters light in a second display color different from the first display color in the second area.