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A color coordinate calibration method, device and system

A calibration method and a technology for calibrating devices, which are applied to static indicators, instruments, etc., can solve problems such as display screen color differences, spectrum differences, and fluorescent glues that are not exactly the same, so as to ensure consistency and reduce color tone differences.

Active Publication Date: 2019-07-30
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the display screens still use liquid crystal display screens. This kind of flat screen is a passive light-emitting screen. The blue light chip is added with yellow fluorescent glue to synthesize white light. Because the wavelength of the blue light chip used in LED products has a certain fluctuation range, and the amount of fluorescent glue in each product is not completely the same due to the error of the dispensing machine, so each The spectrum of each LED product is different
At present, the control tolerance of the color coordinates of LED backlights in the domestic industry is 0.03. This range is very large, which leads to poor consistency of display effects between terminal displays.
However, there is currently no effective method to solve the problem of color tone differences between terminal display screens

Method used

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  • A color coordinate calibration method, device and system
  • A color coordinate calibration method, device and system
  • A color coordinate calibration method, device and system

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0108] In this embodiment, the mobile terminal includes a display screen, and the color coordinates of the display screen are calibrated at the maximum brightness level, including:

[0109] Step 500, the server controls the mobile terminal to enter the calibration mode.

[0110]In this step, the server sends a calibration command to the mobile terminal. After receiving the calibration command, the terminal controls the display to display a white screen at a default color temperature level, and sets the brightness level of the backlight of the display screen to the maximum brightness level.

[0111] Step 501. After the mobile terminal enters the calibration mode, the server controls the color analyzer to detect the color coordinates of the display screen of the mobile terminal.

[0112] Step 502 , the server judges whether the color coordinates of the display screen are within the target color coordinate area, if so, then end the process; if not, continue to execute step 503 . ...

no. 2 example

[0120] In this embodiment, the mobile terminal includes two display screens, namely screen A and screen B, and the color coordinates of the display screens are calibrated at the maximum brightness level, including:

[0121] Step 600, the server controls the mobile terminal to enter the calibration mode.

[0122] In this step, the server sends a calibration command to the mobile terminal. After receiving the calibration command, the terminal controls both screen A and screen B to display a white screen under the default color temperature level, and sets the brightness level of the backlight of screen A and screen B to the maximum brightness. grade.

[0123] Step 601. After the mobile terminal enters the calibration mode, the server controls the color analyzer to detect the color coordinates of the display screen of the mobile terminal.

[0124] Step 602 , the server judges whether the distance between the color coordinates of screen A and screen B is less than or equal to a pr...

no. 3 example

[0131] In this embodiment, the mobile terminal includes two display screens, namely screen A and screen B, and the color coordinates of the display screens are calibrated at three different brightness levels, including:

[0132] Step 700, the server controls the mobile terminal to enter the calibration mode.

[0133] In this step, the server sends a calibration command to the mobile terminal. After receiving the calibration command, the terminal controls both screen A and screen B to display a white screen under the default color temperature level, and sets the brightness level of the backlight of screen A and screen B to the maximum brightness. grade.

[0134] Step 701. After the mobile terminal enters the calibration mode, the server controls the color analyzer to detect the color coordinates of the display screen of the mobile terminal.

[0135] Step 702, the server judges whether the distance between the color coordinates of screen A and screen B is less than or equal to ...

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Abstract

The embodiment of the present invention discloses a color coordinate calibration method, device and system. The color coordinate calibration method includes: controlling the terminal to enter the calibration mode; after the terminal enters the calibration mode, acquiring the color coordinates of the display screen of the terminal; When it is determined that the color coordinates of the display screen need to be calibrated, determine a default color temperature level corresponding to at least one preset brightness level of the display screen, and send the default color temperature level corresponding to the at least one preset brightness level to the terminal. This application realizes the calibration of the color coordinates of the display screen by adjusting the default color temperature level corresponding to at least one preset brightness level of the display screen, which reduces the color tone difference between the display screens of the terminals, thereby ensuring that the display screens of the terminals The consistency of the display effect between.

Description

technical field [0001] The invention relates to terminal technology, in particular to a color coordinate calibration method, device and system. Background technique [0002] At present, most of the display screens still use liquid crystal display screens. This kind of flat screen is a passive light-emitting screen. The blue light chip is added with yellow fluorescent glue to synthesize white light. Because the wavelength of the blue light chip used in LED products has a certain fluctuation range, and the amount of fluorescent glue in each product is not completely the same due to the error of the dispensing machine, so each The spectrum of each LED product is different. At present, the control tolerance of the color coordinates of LED backlights in the domestic industry is 0.03. This range is very large, which leads to poor consistency of display effects between terminal display screens. However, there is currently no effective method to solve the problem of color tone dif...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36
CPCG09G3/36G09G2320/0666G09G2320/0693
Inventor 王剑平杨定洲
Owner ZTE CORP
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