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Liquid crystal display device and method for improving picture flash and image persistence

A technology for liquid crystal display devices and screens, which is applied to identification devices, static indicators, instruments, etc., and can solve problems such as flickering screens and after-image screens after shutdown

Active Publication Date: 2012-11-28
龙星显示科技股份有限公司
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] The above-mentioned prior technology only quickly releases the residual charge after the power switch is turned off, and cannot solve the phenomenon of screen flickering and power-off afterimage during normal display or standby

Method used

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  • Liquid crystal display device and method for improving picture flash and image persistence
  • Liquid crystal display device and method for improving picture flash and image persistence
  • Liquid crystal display device and method for improving picture flash and image persistence

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Embodiment Construction

[0032] First, please refer to figure 2 , is a schematic diagram of a liquid crystal panel with improved screen flickering and image sticking in the present invention, wherein the liquid crystal display device 1 in this embodiment includes a liquid crystal panel 2 with n pixels and a control panel that can control the display content of the liquid crystal panel 2 Video controller (not shown in picture). The video controller of the liquid crystal display device 1 uses p=n−m, p=n+m, p=n (where n>>m) pixels to display a normal picture. At the same time, the video controller is used to make the normal picture reciprocate between p and n pixels, for example, moving 1 pixel every 5 minutes so that the human eyes cannot detect the change.

[0033] Illustrate with an embodiment, when the liquid crystal panel 2 in a liquid crystal display device 1 has 3,000,000 (n) picture element (pixels), and the video controller of the present invention uses p picture element (being p picture eleme...

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Abstract

The invention provides a liquid crystal display device and a method for improving picture flash and image persistence. The device comprises a liquid crystal panel with N pixels, and a video controller capable of controlling display content of the liquid crystal panel; and the video controller displays a normal picture in modes that p is equal to n-m, p is equal to n+m and p is equal to n (n is more than m), and makes the normal picture reciprocate between p, n p and n pixels.

Description

technical field [0001] The present invention relates to a liquid crystal display device and method, in particular to a liquid crystal display device and method capable of improving picture flicker and picture sticking. Background technique [0002] In the known liquid crystal display devices, image sticking generally exists, and the sticking phenomenon is caused by the residual charge in the liquid crystal capacitor of each pixel that has not been released. In particular, when the liquid crystal display is turned off, there will usually be residual charge in the liquid crystal capacitor, which will result in the generation of afterimages after the power off. At the same time, if these charges cannot be completely discharged before the next activation of the liquid crystal display, it will cause the liquid crystal display panel to flicker for a short time after the display is turned on again. In addition, if the bias voltage of the common electrode (Vcom) of the liquid cryst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36G09G3/34G09F9/35G02F1/133
Inventor 林德雄林庆华宋政勋
Owner 龙星显示科技股份有限公司
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