公开(公告)号：US20140368559A1

公开(公告)日：2014-12-18

申请号：US14185489

申请日：2014-02-20

Applicant: Panasonic Liquid Crystal Display Co., Ltd.

Inventor： Sachiko YAMAZAKI ,  Yoshihisa OOISHI

IPC: G09G3/36 ,  G09G3/34

CPC classification number: G09G3/3614 ,  G09G2320/0673

Abstract: A liquid crystal display device includes: a first image signal generating unit for acquiring an image signal and for generating a first image signal in which at least a part of the pixel drive values are reduced; a second image signal generating unit for acquiring the image signal and for generating a second image signal in which at least a part of the pixel drive values are increased; a display signal selection unit for selecting one of the first image signal and the second image signal as a display signal; and a polarity control unit for controlling a polarity of the display signal. The polarity control unit inverts the polarity of the display signal. The display signal selection unit selects the first image signal in a frame immediately before the inversion and selects the second image signal in a frame immediately after the inversion.

Abstract translation: 液晶显示装置包括：第一图像信号生成单元，用于获取图像信号并产生其中至少一部分像素驱动值被减小的第一图像信号; 第二图像信号生成单元，用于获取图像信号并产生其中至少一部分像素驱动值增加的第二图像信号; 显示信号选择单元，用于选择第一图像信号和第二图像信号之一作为显示信号; 以及极性控制单元，用于控制显示信号的极性。 极性控制单元使显示信号的极性反转。 显示信号选择单元在反转之前的帧中选择第一图像信号，并且在反转之后的帧中选择第二图像信号。

公开(公告)号：US20130169615A1

公开(公告)日：2013-07-04

申请号：US13724912

申请日：2012-12-21

Applicant: Panasonic Liquid Crystal Display Co., Ltd.

Inventor： Takahiro KOBAYASHI ,  Yoshio UMEDA ,  Hideki ABE ,  Takayuki TAJIRI ,  Yoshihisa OOISHI ,  Shinji YASUKAWA

IPC: G09G3/36

CPC classification number: G09G3/36 ,  G09G3/3614 ,  G09G3/3648 ,  G09G2320/041 ,  G09G2320/0626 ,  G09G2360/16

Abstract: A liquid crystal display device includes: a liquid crystal display unit that displays, for each of frames, an image based on an input image signal; a drive unit that applies a voltage based on the input image signal to pixels of the liquid crystal display unit; and a control unit that controls an amplitude of the voltage applied to the pixels. The drive unit applies, in one of the frames, a voltage of the same polarity to the pixels connected to one of the source signal lines. The control unit includes: a temperature-information acquiring unit that acquires temperature information of the drive unit; and a filter unit that acquires high-frequency and low-frequency components of the input image signal in a substantial extending direction of the source signal lines. The control unit controls the amplitude of the applied voltage using the temperature information and an output value of the high-frequency component.

Abstract translation: 一种液晶显示装置，包括：液晶显示单元，对于每个帧，基于输入图像信号显示图像; 驱动单元，其将基于所述输入图像信号的电压施加到所述液晶显示单元的像素; 以及控制单元，其控制施加到像素的电压的幅度。 驱动单元在一个帧中施加与连接到源信号线之一的像素具有相同极性的电压。 控制单元包括：温度信息获取单元，其获取驱动单元的温度信息; 以及滤波器单元，其在所述源极信号线的大致延伸方向上获取所述输入图像信号的高频和低频分量。 控制单元使用温度信息和高频分量的输出值来控制施加电压的幅度。