公开(公告)号：US12248227B2

公开(公告)日：2025-03-11

申请号：US18439314

申请日：2024-02-12

Applicant: Japan Display Inc.

Inventor： Takayuki Imai ,  Kojiro Ikeda ,  Takeo Koito

IPC: G02F1/29

Abstract: In a method for driving an optical element including a first liquid crystal cell, the first liquid crystal cell includes a first substrate on which first and second transparent electrodes are arranged in a first direction, a second substrate on which third and fourth transparent electrodes are arranged in a second direction, and a first liquid crystal layer between the first substrate and the second substrate, and the method includes the steps of inputting a first signal to the first transparent electrode, inputting a second signal having a phase difference of π with respect to the first signal to the second transparent electrode, inputting a third signal having a phase difference of α with respect to the first signal to the third transparent electrode, and inputting a fourth signal having a phase difference of π with respect to the third signal to the fourth transparent electrode.

公开(公告)号：US11587519B1

公开(公告)日：2023-02-21

申请号：US17873677

申请日：2022-07-26

Applicant: Japan Display Inc.

Inventor： Takayuki Imai ,  Kentaro Okuyama

IPC: G09G3/36

Abstract: A display device includes: first and second substrates with a liquid crystal therebetween; pixel electrodes and a common electrode provided to the first or second substrate; a light source including first to third light sources; and an image processor generating a signal to be provided to each pixel based on an input image signal. A frame period includes a first subframe period in which the first light source is on, a second subframe period in which the second light source is on, a third subframe period in which the third light source is on, and a fourth subframe period in which one or more of the first to third light sources are on. The image processor divides a gradation value into two values smaller than the gradation value, allocates one of the two values to the fourth subframe period, and allocates the other value to the other first subframe period.

公开(公告)号：US09728137B2

公开(公告)日：2017-08-08

申请号：US14812214

申请日：2015-07-29

Applicant: Japan Display Inc.

Inventor： Takayuki Imai ,  Norio Nakamura

IPC: G09G3/30 ,  G09G3/3283 ,  G09G5/18

CPC classification number: G09G3/3233 ,  G09G3/3283 ,  G09G5/18 ,  G09G2310/08 ,  G09G2320/0646 ,  G09G2330/021 ,  G09G2330/023

Abstract: According to one embodiment, a display device includes a display panel in which pixel units are arranged, and a controller configured to generate image signals by multiplying display data externally supplied to each line by a luminosity adjustment factor, to supply the generated image signals to the pixel units, to accumulate power consumption of each line, and to execute black insertion if the accumulated power consumption is determined to be greater than power consumption of one previous display frame by a predetermined value, wherein the luminosity adjustment factor is acquired by substituting the power consumption of one previous frame to a decreasing function, and a display pattern including a plurality of continuing black display lines is synchronized with supply of the image signals and is displayed moving the same direction of a screen scanning direction of the display panel during the black insertion.

公开(公告)号：US11630338B2

公开(公告)日：2023-04-18

申请号：US17335450

申请日：2021-06-01

Applicant: Japan Display Inc.

Inventor： Takayuki Imai ,  Takeo Koito

IPC: G02F1/1334 ,  G09G3/36

Abstract: According to one embodiment, a display device includes a display panel, a third transparent substrate, a light-emitting element, and a modulation element. The display panel includes a first transparent substrate, a second transparent substrate, a first liquid crystal layer of a polymer dispersed type held. The third transparent substrate has a first end portion. The light-emitting element is opposed to the first end portion. The modulation element includes a fourth transparent substrate and a fifth transparent substrate disposed between the light-emitting element and the first end portion, a second liquid crystal layer, and control electrodes for applying voltage to the second liquid crystal layer.

公开(公告)号：US11170712B2

公开(公告)日：2021-11-09

申请号：US16376095

申请日：2019-04-05

Applicant: JAPAN DISPLAY INC.

Inventor： Takayuki Imai ,  Norio Nakamura

IPC: G09G3/3233 ,  G09G3/3283 ,  G09G5/18

Abstract: According to one embodiment, a display device includes a display panel in which pixel units are arranged, and a controller configured to generate image signals by multiplying display data externally supplied to each line by a luminosity adjustment factor, to supply the generated image signals to the pixel units, to accumulate power consumption of each line, and to execute black insertion if the accumulated power consumption is determined to be greater than power consumption of one previous display frame by a predetermined value, wherein the luminosity adjustment factor is acquired by substituting the power consumption of one previous frame to a decreasing function, and a display pattern including a plurality of continuing black display lines is synchronized with supply of the image signals and is displayed moving the same direction of a screen scanning direction of the display panel during the black insertion.

公开(公告)号：US10509268B2

公开(公告)日：2019-12-17

申请号：US15943890

申请日：2018-04-03

Applicant: Japan Display Inc.

Inventor： Tae Kurokawa ,  Kentaro Okuyama ,  Takayuki Imai

IPC: G02F1/1343 ,  G02F1/1334 ,  G02F1/1335 ,  G09G3/34

Abstract: According to an aspect, a display device includes: a first translucent substrate; a second translucent substrate facing the first translucent substrate; a liquid crystal layer including polymer dispersed liquid crystal sealed between the first translucent substrate and the second translucent substrate; at least one light emitter facing at least one of a side surface of the first translucent substrate or a side surface of the second translucent substrate; and a display controller that controls transmittance of light passing through the first translucent substrate and the second translucent substrate. A non-light-emitting period in which the at least one light emitter does not emit light is provided between a plurality of light-emitting periods in which the at least one light emitter emits light.

公开(公告)号：US11875759B2

公开(公告)日：2024-01-16

申请号：US17336670

申请日：2021-06-02

Applicant: Japan Display Inc.

Inventor： Shunsuke Noichi ,  Takayuki Imai

IPC: G09G3/36

CPC classification number: G09G3/3696 ,  G09G2300/0426 ,  G09G2300/0452 ,  G09G2310/0202

Abstract: According to one embodiment, a display device includes a display panel including pixels arranged in a matrix, a common electrode, a pixel electrode disposed for each of the pixels, and a liquid crystal layer containing a polymer and liquid crystal molecules, a light source, and a controller controlling a voltage between the common electrode and the pixel electrode, and controlling an operation of the light source. The controller applies a voltage corresponding to an image component to write the image component between the common electrode and the pixel electrode in order from the pixel located on an opposite side to the light source in a first period, and turns on the light source to display an image corresponding to the written image component on the display panel in the first period.

公开(公告)号：US11726372B2

公开(公告)日：2023-08-15

申请号：US17499078

申请日：2021-10-12

Applicant: Japan Display Inc.

Inventor： Yuuichi Kanesaka ,  Koichi Nagao ,  Tomohide Oohira ,  Takayuki Imai

IPC: G02F1/1345 ,  G02F1/1343

CPC classification number: G02F1/13452 ,  G02F1/134309

Abstract: According to one embodiment, a liquid crystal device includes a first liquid crystal cell, a second liquid crystal cell, a first flexible wiring board including a first terminal and connected to the first liquid crystal cell, a second flexible wiring board including a second terminal and connected to the second liquid crystal cell, and a circuit board including a first connector connected to the first terminal and a second connector connected to the second terminal. The first flexible wiring board and the second flexible wiring board are arranged without overlapping each other in plan view. A first distance from an edge of the circuit board to the first connector and a second distance from the edge to the second connector are different from each other.

公开(公告)号：US20180292690A1

公开(公告)日：2018-10-11

申请号：US15943890

申请日：2018-04-03

Applicant: Japan Display Inc.

Inventor： Tae Kurokawa ,  Kentaro Okuyama ,  Takayuki Imai

IPC: G02F1/1343 ,  G02F1/1334 ,  G09G3/36

CPC classification number: G02F1/1343 ,  G02F1/1334 ,  G02F1/133615 ,  G02F1/133621 ,  G02F2001/133622 ,  G09G3/3413 ,  G09G3/342 ,  G09G2310/0235 ,  G09G2310/024

Abstract: According to an aspect, a display device includes: a first translucent substrate; a second translucent substrate facing the first translucent substrate; a liquid crystal layer including polymer dispersed liquid crystal sealed between the first translucent substrate and the second translucent substrate; at least one light emitter facing at least one of a side surface of the first translucent substrate or a side surface of the second translucent substrate; and a display controller that controls transmittance of light passing through the first translucent substrate and the second translucent substrate. A non-light-emitting period in which the at least one light emitter does not emit light is provided between a plurality of light-emitting periods in which the at least one light emitter emits light.

公开(公告)号：US12050386B2

公开(公告)日：2024-07-30

申请号：US18336193

申请日：2023-06-16

Applicant: Japan Display Inc.

Inventor： Yuuichi Kanesaka ,  Koichi Nagao ,  Tomohide Oohira ,  Takayuki Imai

IPC: G02F1/1345 ,  G02F1/1343 ,  G02F1/1347

CPC classification number: G02F1/13452 ,  G02F1/134309 ,  G02F1/1347

Abstract: According to one embodiment, a liquid crystal device includes a first liquid crystal cell, a second liquid crystal cell, a first flexible wiring board including a first terminal and connected to the first liquid crystal cell, a second flexible wiring board including a second terminal and connected to the second liquid crystal cell, and a circuit board including a first connector connected to the first terminal and a second connector connected to the second terminal. The first flexible wiring board and the second flexible wiring board are arranged without overlapping each other in plan view. A first distance from an edge of the circuit board to the first connector and a second distance from the edge to the second connector are different from each other.