公开(公告)号：US20190064559A1

公开(公告)日：2019-02-28

申请号：US16106537

申请日：2018-08-21

Applicant: Japan Display Inc.

Inventor： Tsutomu HARADA ,  Daichi SUZUKI ,  Kazuhiko SAKO ,  Naoyuki TAKASAKI ,  Kazunari TOMIZAWA

IPC: G02F1/13357 ,  G09G3/34 ,  G09G3/36 ,  F21V8/00

Abstract: According to an aspect, a display device includes: a display panel including a display area provided with pixels; an illuminator including an illumination area configured to emit light to the display panel such that the display area is illuminated from one surface side of the display panel; and a liquid crystal dimming panel overlapping the display panel, and including a dimming area configured to be adjusted in transmittance of the light emitted to another surface side of the display panel through the display area. The illumination area includes first segment regions configured such that luminance levels thereof are individually adjusted. The dimming area includes second segment regions configured such that the light transmittances thereof are individually adjusted. Each of the first segment regions overlaps more than one of the second segment regions. Each of the second segment regions overlaps more than one of the pixels.

公开(公告)号：US20160300522A1

公开(公告)日：2016-10-13

申请号：US15084523

申请日：2016-03-30

Applicant: Japan Display Inc.

Inventor： Naoyuki TAKASAKI ,  Kazuhiko SAKO ,  Tsutomu HARADA

IPC: G09G3/20

CPC classification number: G09G3/342 ,  G09G2320/0285 ,  G09G2320/0646 ,  G09G2330/023 ,  G09G2360/16

Abstract: The signal processing unit 20 includes a pixel index value calculating unit that calculates a pixel index value based on an input signal for each pixel 48, a chunk determining unit that performs consecutiveness determination which determines whether or not a pixel 48, having a pixel index value between an upper boundary value and a lower boundary value is consecutive from the starting pixel, and determines consecutive pixels as a chunk, a chunk index value calculating unit that calculates a chunk index value, a region index value calculating unit that calculates a region index value of a target region, and a light irradiation amount deciding unit that compares the chunk index value with the region index value, and decides the irradiation amount of the light of the light source unit in the target region based on the one by which the irradiation amount of the light is increased.

Abstract translation: 信号处理单元20包括：像素指标值计算单元，其基于每个像素48的输入信号计算像素索引值;块确定单元，执行连续性确定，其确定具有像素索引值的像素48 在上边界值和下边界值之间，从起始像素连续起来，并且确定连续像素作为块，计算块指数值的块指数值计算单元，计算区域索引值的区域索引值计算单元 以及光照射量决定单元，其将块指标值与区域指标值进行比较，并且基于照射量决定目标区域中的光源单元的光的照射量 的光增加了。

公开(公告)号：US20150317934A1

公开(公告)日：2015-11-05

申请号：US14697820

申请日：2015-04-28

Applicant: Japan Display Inc.

Inventor： Naoyuki TAKASAKI ,  Tsutomu HARADA ,  Susumu KIMURA

IPC: G09G3/34

CPC classification number: G09G3/3426 ,  G09G3/3413 ,  G09G2320/062 ,  G09G2320/0626 ,  G09G2320/0646 ,  G09G2360/16

Abstract: A display device includes an image display panel whose display is controlled by an image signal, a backlight which includes light sources and lights the image display panel from behind, and a display control section which calculates, based on the image signal, the required luminance value of the backlight for each divided area of the image display panel, calculates a tentative lighting level of each light source based on luminance distribution information for the backlight stored previously and the required luminance values, sets the lighting level of a first light source whose tentative lighting level exceeds an upper limit to the upper limit, determines the lighting level of a second light source whose tentative lighting level does not exceed the upper limit, based on the lighting level of the first light source, luminance distribution information, and required luminance value, and controls the backlight by the lighting levels.

Abstract translation: 一种显示装置，包括：图像显示面板，其显示由图像信号控制，背光源包括光源，并从后面点亮图像显示面板;以及显示控制部，其基于图像信号计算所需亮度值 对于图像显示面板的每个分割区域的背光源，基于先前存储的背光的亮度分布信息和所需亮度值来计算每个光源的暂定点亮电平，设定其初始照明的第一光源的点亮电平 电平超过上限的上限，基于第一光源的亮度，亮度分布信息和要求的亮度值，确定暂定照明电平不超过上限的第二光源的点亮电平， 并通过照明级别控制背光。