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1. CN102822728 - Liquid crystal display device and television receiving apparatus

官庁 中華人民共和国
出願番号 201180016083.8
出願日 29.03.2011
公開番号 102822728
公開日 12.12.2012
特許番号 102822728
特許付与日
公報種別 A
CPC
G09G 3/3426
G02F 2001/133601
出願人 Sharp KK
発明者 Kohashikawa Seiji
代理人 qiu zhongkuang
発明の名称
(EN) Liquid crystal display device and television receiving apparatus
(ZH) 液晶显示装置及电视接收装置
要約
(EN)
Disclosed is a liquid crystal display device (1) provided with a liquid crystal panel (13) for displaying an input video signal, a backlight (10) for irradiating the liquid crystal panel, a light source light emission control unit for controlling light emission of the backlight (10), and a region detection unit (11c) for detecting a parallel movement region (13T) that moves parallel within video shown by the input video signal. The parallel movement region (13T) means, for example, a region in which video is panned and scrolled and a telop region. The light source light emission control unit is exemplified by a control CPU (15) and a light source drive unit (16). The control CPU (15) performs light emission control of light-emitting regions (10a-10g) by controlling the light source drive unit (16), the light emission control including intermittent control. Regarding the light-emitting region (10g) corresponding to the parallel movement region (13T), the intermittent control is performed only on the light-emitting region (10g), or performed on the light-emitting region (10g) so that the light-out period thereof becomes longer than those of the other light-emitting regions (10a-10f). Consequently, regarding a display region having a high possibility that video breaks down, the breakdown of the video can be prevented from being emphasized by the intermittent control of a light source.

(ZH)

本发明的液晶显示装置(1)具备:液晶面板(13),该液晶面板对输入视频信号进行显示;背光源(10),该背光源对液晶面板进行照射;光源发光控制部,该光源发光控制部进行背光源(10)的发光控制;以及区域检测部(11c),该区域检测部对输入视频信号所示出的视频中进行平行移动的平行移动区域(13T)进行检测。平行移动区域(13T)是指例如视频的全景区域、滚动条区域、字幕区域。光源发光控制部可以例示为控制CPU(15)和光源驱动部(16)。控制CPU(15)通过对光源驱动部(16)进行控制,实行包含了间歇控制的各发光区域(10a~10g)的发光控制。对于与平行移动区域(13T)对应的发光区域(10g),只对其发光区域实行该间歇控制,或者对其发光区域(10g)实行该间歇控制使得与其他发光区域(10a~10f)相比该发光区域的熄灭期间更长。根据本发明,对于视频很可能出现缺陷的显示区域,通过光源的间歇控制能不强调视频的缺陷。