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Image display device and display method for image display device

專利號
US10867572B2
公開日期
2020-12-15
申請人
Panasonic Liquid Crystal Display Co., Ltd.(JP Hyogo)
發(fā)明人
Tatsuo Itoman; Satoshi Hirotsune
IPC分類
G09G3/36
技術(shù)領(lǐng)域
writing,pixel,row,line,in,driver,22a1,crystal,display,data
地域: Himeji

摘要

An image display device includes: a display; gate signal lines including a first pixel row and a second pixel row; a gate driver; data signal lines; a source driver; and a controller that determines whether the second pixel row has correlation with the first pixel row in an image. When determining that the second pixel row has the correlation with the first pixel row, the controller causes the source driver to supply the data voltage corresponding to the first pixel row, causes the gate driver to supply the gate signal to write the data voltage in the first pixel row, and causes the gate driver to supply the gate signal to write the data voltage corresponding to the first pixel row in the second pixel row.

說明書

The example in which the writing processing is performed every three lines in each frame is described above, but the present disclosure is not limited to the example. For example, when the writing processing is performed every N (N is an integer of 1 or more) line in each frame, the drive frequency for each pixel row becomes 60/N, and the power consumption can be reduced. In this way, the power consumption can be reduced by performing thinning-out drive (an example of the low power drive).

However, in driving the liquid crystal panel, image quality degradation is generated by a voltage drop due to a charge loss such as leakage of data (gradation) voltage in pixel capacitance (liquid crystal capacitance). Specifically, a change in hue, generation of ghosting or flicker can be cited. In the above method, because of a long interval for performing the writing processing on the pixel row, there is a risk of generating the image quality degradation due to the charge loss such as the leakage. That is, coexistence of prevention of the image quality deterioration and the reduction of the power consumption can hardly be achieved in the liquid crystal display device of the comparative example.

For this reason, the inventor of the present disclosure intensively studied a liquid crystal display device capable of achieving the coexistence of the prevention of the image quality degradation and the reduction of the power consumption in the liquid crystal panel. As a result, the inventor created the following liquid crystal display device.

權(quán)利要求

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