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LED display bad point point inspection system

A technology of LED display and spot inspection system, applied in static indicators, instruments, etc., can solve the problems of short transmission distance, unstable signal, and difficulty in correct feedback of the number of dead pixels and coordinates of LED display, so as to achieve the transmission distance. The effect of long distance and stable transmission signal

Active Publication Date: 2016-12-28
SHENZHEN DICOLOR OPTOELECTRONICS
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AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a kind of LED dead point inspection system, aiming at solving the short transmission distance and unstable signal of the LED dead point inspection system in the prior art, which makes it difficult to correctly feed back the transmitted data to the LED display screen. The problem of the number of dead pixels and coordinates

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  • LED display bad point point inspection system

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Embodiment Construction

[0014] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0015] refer to figure 1 , a functional block diagram of an LED dead pixel inspection system provided by an embodiment of the present invention.

[0016] A kind of LED display screen dead point point inspection system, communicates with host computer 5, comprises LED display screen 1, LED light 12 of LED display screen 1 is driven by constant current LED drive chip 11 with full-screen real-time silent error detection function; LED display The screen inspection system also includes: a data collection module 2 that collects and enhances the data inspected by the constant current LED driver chip 11, and its input terminal is connected to the output terminal of the LED display screen 1; the data transmitted by the data collection module 2 is i...

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Abstract

The invention relates to the technical field of LED display screen detection, in particular to a LED display screen dead point inspection system. In this LED display bad point inspection system, the data collection module is used to collect and enhance the data inspected by the constant current LED driver chip with full-screen real-time silent error detection function, and the inspection module intercepts the data transmitted by the data collection module Batch processing, storage and collection, and then using the RS485 bus for transmission, the main control module receives the data transmitted by the point inspection module through the RS485 bus. Utilize the advantages of RS485 bus to transmit signals, so the LED display screen dead point inspection system provided by the present invention has the advantages of long transmission distance and stable transmission signal, and the transmitted data can correctly feed back the number and coordinates of dead points in the LED display screen .

Description

technical field [0001] The invention relates to the technical field of LED display screen detection, in particular to a LED display screen dead point inspection system. Background technique [0002] At present, LED displays have been used in large billboards. The LED display is composed of thousands of LED pixels, and each pixel is composed of multiple LED lights of different colors. The failure of any LED will affect the overall display effect of the LED display. Among them, the LED most often occurs The two types of faults are open-circuit faults and short-circuit faults, collectively referred to as bad points. [0003] Therefore, in order to ensure the normal display effect of the LED display, it is necessary to regularly or irregularly check the bad points of the LED display. [0004] The existing technology provides a constant current LED driver chip with full-screen real-time silent error detection function (such as MBI5039). LED lights for inspection. In addition,...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/00
Inventor 徐陈爱赵立刚周杰张利民薛群峰
Owner SHENZHEN DICOLOR OPTOELECTRONICS