Method for inspecting and eliminating liquid-crystal display device ghost image

A technology of liquid crystal display and detection method, which is applied to static indicators, instruments, transistors, etc., can solve the problems of high manufacturing cost, ineffective detection and elimination of liquid crystal display ghost effect, technical difficulties, etc. Excellent display quality, simple algorithm effect

Inactive Publication Date: 2007-06-20
ARIMA COMP
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Problems solved by technology

[0005] Although the improvements in the hardware of liquid crystal displays have greatly shortened the reaction time causing the ghost effect, the price is that manufacturers have to pay higher manufacturing costs.
On the other hand, there is an increasing demand for large-size LCDs in the market, but it is technically extremely difficult to manufacture large-size, short-response-time LCDs because the ghost effect of large-size LCDs cannot be eliminated
However, there is currently no method on the market that can effectively detect and eliminate the ghosting effect of liquid crystal displays

Method used

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  • Method for inspecting and eliminating liquid-crystal display device ghost image
  • Method for inspecting and eliminating liquid-crystal display device ghost image
  • Method for inspecting and eliminating liquid-crystal display device ghost image

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Embodiment Construction

[0021] (1) Detection method of ghost effect

[0022] In order to improve the ghosting effect, the method provided by the present invention must effectively detect and identify the pixels in the image input data that cause the ghosting effect. However, the ghost effect is a visual phenomenon and has different changes for different observers; when a fast-moving image is displayed on a liquid crystal display, two different types of effects can be observed: the trail effect ) and the blinking effect. Both of these effects are caused by the slower response time of the transistor, and both can be considered ghost effects. The present invention provides the theory behind the causes of these two effects, and will use this theory as a guide to find ways to detect and identify pixels that cause ghost effects.

[0023] Please refer to FIG. 1 , which is a schematic diagram of the method for detecting ghost effect according to the present invention, wherein the horizontal axis is time, a...

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Abstract

A method for detecting and eliminating ghost effect of liquid crystal display includes calculating out product of human visual sense holding time and maximum color variation speed to obtain threshold, calculating out density grade change-amount of pixel key element on liquid crystal display, comparing said threshold with said density grade change-amount, detecting and eliminating ghost effect by making said threshold be greater than density grade change-amount.

Description

technical field [0001] The present invention relates to a method for detecting and eliminating the ghosting effect of a liquid crystal display, in particular to a thin film transistor liquid crystal display. Background technique [0002] Liquid Crystal Displays (LCDs) have been widely used in desktop computer screens, notebook computer screens, televisions and other types of display devices. With the development of its manufacturing technology, the application range of liquid crystal displays and the quality of the products made. It will continue to grow and develop in the future. [0003] However, compared with conventional cathode ray tube (CRT) displays or the recent plasma (Plasma) displays, the biggest disadvantage of liquid crystal displays in use is that they have a slower response time, which is caused by the liquid crystal display. caused by the structural elements of the display. [0004] All pixels of a liquid crystal display are generated by color filters, each...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/136G02F1/133H01L29/786
Inventor 李昭桦吴钟大周小松郭宗杰
Owner ARIMA COMP
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