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Non-uniform backlight sheet liquid crystal display uniformity degree compensation method and display

A technology of liquid crystal display and compensation method, applied in the direction of image reproducer, static indicator, instrument, etc. of solid-state color display device, can solve the problems of chromaticity and brightness difference, doubt about product quality, increase manufacturing cost, etc., to ensure The effect of uniformity, raw material selection flexibility, and production cost reduction

Active Publication Date: 2012-09-19
DYNASCAN TECH
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  • Abstract
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Problems solved by technology

[0011] When there are so many classifications of backlight dies or unit cells, whether it is stocking raw materials or purchasing management, it will cause major troubles to inventory. Correspondingly, this kind of procurement and management troubles will also greatly increase manufacturing costs in disguise and increase working hours needlessly. , the price of the product has skyrocketed; the more serious problem is: although the brightness and chromaticity of each LCD monitor "in itself" are uniform, when displayed in a store, etc., even if two monitors of the same brand are side by side, it may still be due to the selected Different classifications of backlight LEDs lead to differences in chromaticity and brightness, which not only causes a major problem on the finished tube, but also makes consumers doubt the quality of the product

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  • Non-uniform backlight sheet liquid crystal display uniformity degree compensation method and display
  • Non-uniform backlight sheet liquid crystal display uniformity degree compensation method and display
  • Non-uniform backlight sheet liquid crystal display uniformity degree compensation method and display

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Embodiment Construction

[0041] The foregoing and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of preferred embodiments with accompanying drawings. And in the present invention, the backlight panel can not only be composed of LED1, LED2, . . . LEDn, etc., but can also be formed by mixing cold cathode tubes (CCFL) and LEDs. Moreover, the above-mentioned LEDs can be LED modules composed of R, G, and B crystal grains, or white LEDs (such as blue LEDs mixed with fluorescent powder) or white LEDs mixed with RGB LEDs.

[0042] Because the three basic colors of each unit cell position all utilize the image signal (S r , S g , S b ) separately controls the light transmittance of each sub-unit cell, and forms a point light source as if composed of three basic colors by passing through the brightness of each color of each sub-unit cell. As mentioned above, even if the filter can be considered uniform, due to the uneven...

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Abstract

The invention relates to a non-uniform backlight sheet liquid crystal display uniformity degree compensation method; by choosing all unit cells which can reach a unified standard used as a virtual primitive color, the relation of tristimulus values between all the unit cells and the virtual primitive color are calculated and is recorded as compensation data; when the display is operated, the input image signal respectively carries out arithmetic conversion by the compensation data operators according to the applied nit cell position, so as to obtain the compensation image signal of the corresponding unit cell; therefore, all the unit cells show the same chromaticity and brightness when corresponding to the same image signal, so as to keep the whole display to have uniform chromaticity andbrightness; the products on the whole production line can be even defined to the same virtual primitive color, so as to lead the quality of all displays to be uniform.

Description

【Technical field】 [0001] The invention relates to a method for compensating the uniformity of a display, in particular to a method for compensating the uniformity of a liquid crystal display with a non-uniform backlight and the display. 【Background technique】 [0002] The liquid crystal display mainly includes the backlight panel at the rear and the liquid crystal module at the front. Since the image display of the liquid crystal display uses the backlight in the backlight panel to penetrate the color filter (color-filter) at the front, so that the image corresponding to the front LCD module Three basic color elements (primary colors) of red, green and blue are formed at the position of each liquid-crystal valve in the group; and then the voltage between the electrodes on the front and rear sides of each liquid-crystal valve is controlled by electrical signals to change the color between them. The light transmittance of liquid crystal, for the sake of explanation, here is ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36H04N9/30H04N9/73
CPCG09G2320/0242G09G3/3611G09G2320/0233G09G3/2003
Inventor 王遵义
Owner DYNASCAN TECH
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