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LED (Light Emitting Diode) display device heat dissipation uniformity detection method, detection device and detection system

A display device and detection method technology, applied to static indicators, instruments, etc., can solve the problems of high cost, low detection efficiency, small application range, etc., and achieve the effect of improving the manufacturing process and simple and effective detection and evaluation

Active Publication Date: 2014-08-13
XIAN NOVASTAR TECH
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Problems solved by technology

In the prior art, there are mainly two types of heat dissipation uniformity detection: (1) using an infrared thermometer, but it requires two-dimensional scanning, row by column, resulting in low detection efficiency; (2) using an infrared thermal imager, But its scope of application is small and the cost is high

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  • LED (Light Emitting Diode) display device heat dissipation uniformity detection method, detection device and detection system
  • LED (Light Emitting Diode) display device heat dissipation uniformity detection method, detection device and detection system
  • LED (Light Emitting Diode) display device heat dissipation uniformity detection method, detection device and detection system

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Embodiment Construction

[0014] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0015] Please refer to figure 1 , which is an application schematic diagram of an LED display screen heat dissipation uniformity detection system according to an embodiment of the present invention. Such as figure 1 As shown, the LED display screen heat dissipation uniformity detection system 100 includes a computer 110 installed with a heat dissipation analysis software 111 and an image acquisition device such as an area array camera 130 connected to the computer 110 by signals. More specifically, the computer 110 is connected to the LED display control system ( figure 1 not shown in); the area array camera 130 is used to take pictures of the display screen of the LED display screen 300 (that is, image acquisition), and has the adva...

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Abstract

The invention relates to an LED (Light Emitting Diode) display device heat dissipation uniformity detection method, an LED display device heat dissipation uniformity detection device and an LED display device heat dissipation uniformity detection system. The detection method comprises the following steps: controlling an LED display device to display monochromatic pictures; shooting monochromatic pictures displayed by the LED display device for multiple times at preset time intervals to obtain a plurality of detection images corresponding to different moments; analyzing the plurality of detection images to extract brightness values of a plurality of LED lamp points in each detection image and calculating to obtain brightness variation information of the plurality of LED lamp points; and evaluating the heat dissipation uniformity of the LED display device according to the distribution condition of the brightness variation information of the plurality of LED lamp points. According to the LED display device heat dissipation uniformity detection method, by utilizing the characteristics of LED brightness change and temperature correlation, and combining with an image shooting and image analyzing technology, the distribution condition of the brightness variation information of all LED lamp points in the LED display device is obtained, thus the temperature distribution condition during displaying of the LED display device is indirectly obtained, and the purpose of heat dissipation uniformity detection is achieved.

Description

technical field [0001] The invention relates to the technical field of display screen detection, in particular to a detection method, a detection device and a detection system for the uniformity of heat dissipation of an LED display device. Background technique [0002] Due to the uneven heat dissipation caused by the production process, the physical characteristics of the device and the circuit design, various display devices generally have different forms of display defects, and these display defects will have varying degrees of impact on the display effect. Therefore, in the development and production process of the display screen, it is necessary to detect whether the heat dissipation of the product is uniform. In the prior art, there are mainly two types of heat dissipation uniformity detection: (1) using an infrared thermometer, but it requires two-dimensional scanning, row by column, resulting in low detection efficiency; (2) using an infrared thermal imager, But its...

Claims

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Application Information

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IPC IPC(8): G09G3/00
Inventor 袁胜春宗靖国王伙荣赵星梅杨城
Owner XIAN NOVASTAR TECH
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