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Method, device and system for correcting LED display device

A technology of a display device and a correction method, which is applied to static indicators, instruments, etc., can solve problems such as increased difficulty in point positioning, inaccurate point positioning, and affecting color correction efficiency, achieving accurate point positioning results and improving correction efficiency.

Pending Publication Date: 2021-11-12
XIAN NOVASTAR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the small dot pitch on the LED unit board, it makes the color correction of the LED display screen or LED display box spliced ​​by the LED unit board, such as brightness correction or brightness chromaticity correction. The LED light points in the bright correction image are relatively dense, which increases the difficulty of point positioning in the subsequent image processing process. In severe cases, it will cause inaccurate point positioning, which will affect the efficiency of color correction.

Method used

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  • Method, device and system for correcting LED display device
  • Method, device and system for correcting LED display device
  • Method, device and system for correcting LED display device

Examples

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no. 1 example

[0032] A calibration method for an LED display device provided by the first embodiment of the present invention, for example, is suitable for using figure 1 A calibration system 10 for an LED display device is shown. Such as figure 1 As shown, the calibration system 10 includes: a host computer 11 installed with calibration software, a display controller 13 and an image acquisition device 17, which can be used to perform color calibration such as brightness calibration or brightness chromaticity calibration on the LED display device 100 to be calibrated. Furthermore, if Figure 2A As shown, the LED display device 100 is an LED display box, which includes a plurality of LED unit boards 101 spliced ​​together and a display control card 103 electrically connected to the plurality of LED unit boards 101; but the implementation of the present invention The example is not limited to this, and the LED display device 100 can also be composed of multiple Figure 2A The shown LED dis...

no. 2 example

[0052] see Figure 8 An embodiment of the present invention provides a calibration device 80 for an LED display device. The LED display device includes a plurality of LED unit boards spliced ​​together and a display control card electrically connected to the plurality of LED unit boards (such as Figure 2A and Figure 2B shown), each of the LED unit boards includes a circuit board and a plurality of COB-type LED modules arranged on the circuit board so that the plurality of COB-type LED modules of the plurality of LED unit boards together form a COB type LED module array, each of the COB type LED modules includes a plurality of LED pixels that are independently controlled, and each of the LED pixels includes a plurality of different color LEDs; the calibration device 80 includes: including: a display control module 81 , an acquisition control module 83 and a coefficient generation module 85 .

[0053] Wherein, the display control module 81 is, for example, used to send an im...

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Abstract

The embodiment of the invention relates to a method, a device and a system for correcting an LED (Light Emitting Diode) display device, which adopt a specific lightening control mode for the LED display device using a COB (Chip On Board) type LED module as a light emitting unit. In other words, LEDs with the same color in a plurality of LED pixels in the COB type LED modules at the designated positions in the COB type LED module array are controlled to be lightened every time, but the LED pixels of the COB type LED modules at the peripheral positions adjacent to the COB type LED modules at the designated positions in the COB type LED module array are not controlled to be lightened; therefore, as the pixel point spacing of the LED display device, such as an LED display screen or an LED display box body, becomes smaller and smaller, a more accurate point positioning result can still be obtained, and the correction efficiency can be further improved.

Description

technical field [0001] The invention relates to the technical field of display calibration, in particular to a calibration method for an LED display device, a calibration device for an LED display device, and a calibration system for an LED display device. Background technique [0002] With the rapid development of the LED industry, LED displays, as a flat panel display device, are widely used in various occasions of daily life. The reason why LED display is widely used and developed rapidly is inseparable from its own advantages. These advantages include: high brightness, low working voltage, low power consumption, free assembly, large screen, long life , low failure rate, impact resistance, stable performance, high visibility, and easy matching with integrated circuits. Based on semiconductor technology that has been booming for decades, LED display has a series of advantages such as adjustable brightness range, safety and environmental protection, energy saving, bright c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32
CPCG09G3/32G09G2320/0271G09G2320/0626
Inventor 杨城来浩坤殷雷刘宝华樊兴旺
Owner XIAN NOVASTAR TECH
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