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Liquid crystal display colour-temp. automatic regulation systemand method

A liquid crystal display and color temperature adjustment technology, applied to static indicators, instruments, etc., can solve the problems of unsatisfactory color adjustment of liquid crystal display, narrow viewing angle of liquid crystal display, low production capacity, etc.

Inactive Publication Date: 2005-12-21
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the color adjustment of liquid crystal display (LCD) has been unsatisfactory. This is because the color adjustment of LCD should take into account the ambient light source and the properties of liquid crystal display, and the viewing angle of liquid crystal display is narrow. An optimal viewing angle and color accuracy are not easy
[0004] And because the production line cannot be required to adjust the three primary colors of R, G, and B for each LCD like sample design in production, if the above method is adopted, the production capacity will be very low and will not meet customer requirements

Method used

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  • Liquid crystal display colour-temp. automatic regulation systemand method
  • Liquid crystal display colour-temp. automatic regulation systemand method
  • Liquid crystal display colour-temp. automatic regulation systemand method

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Embodiment Construction

[0012] First explain the terms involved in this embodiment

[0013] R value: Red value, which is the red value of the three primary colors.

[0014] G value: the Green value, which is the green value of the three primary colors.

[0015] B value: the Blue value, which is the blue value of the three primary colors.

[0016] PWM: Pulse Width Modulation.

[0017] This embodiment adopts Chroma 7120 color analyzer, but other color analyzers can also be used in actual production. Chroma 7120 is equipped with a sensor similar to the CIE1931 color matching function, which can accurately measure the light energy emitted by the LCD panel. Users can freely switch between three different chromaticity coordinate systems, including xyY (xy: chromaticity coordinate value, Y: brightness value).

[0018] In this embodiment, the requirements 5700K, 9300K, and 6500K proposed by customers are taken as examples. For example, under the color temperature standard of TCO99, the abscissa value of...

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Abstract

The system includes following parts: multiple liquid crystal display (LCD) to be carried out color temperature adjustment, color analyzer for converting displayed frame to specific value of color temperature, VGA signal generator for supplying normal full white frame, and a PC for analyzing information and adjusting color temperature of LCD. Probe of the color analyzer is reached to central position of LCD to be tested, and present information of color temperature is transferred to the color analyzer. Through RS-232 asynchronous transceiver, communication program at bottom layer executes data exchange and communication between LCD and PC. Data are stored in electronic spreadsheet for convenient to carried out data statistics, saving operation time and raising efficiency.

Description

【Technical field】 [0001] The invention relates to a display color temperature automatic adjustment technology, in particular to a system and method which can complete color temperature adjustment in a relatively short time by using the technology when producing liquid crystal displays. 【Background technique】 [0002] Color temperature is a unit of measurement used to measure the color of light or light source, expressed in K (Kelvin). Among them, the color temperature of blue is higher, about 8000K to 10000K, which is called "cool tone" (Cool tone); while the color temperature of red is lower, about 2000K to 3000K, called "warm tone" (Warm tone) . When the display leaves the factory, the manufacturer will adjust the picture according to the color temperature and two different tones of cold and warm according to the customer's requirements. The picture of warm tones is bright and the picture of cool tones is soft. [0003] The LCD monitors produced now have the above-mentio...

Claims

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Application Information

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IPC IPC(8): G09G3/36
Inventor 赖京州黄光良
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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