Method for testing heat dissipation uniformity of led display device
A technology of a display device and a detection method, applied in static indicators, instruments, etc., can solve the problems of high cost, low detection efficiency, and small application range, and achieve the effect of improving the manufacturing process
Active Publication Date: 2016-06-29
XIAN NOVASTAR TECH
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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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[0011] 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.
[0012] 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 area camera 130 connected to the computer 110 by signal. 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 advantage of a single acquisition of a larger p...
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The invention relates to a method for detecting the uniformity of heat dissipation of an LED display device, which comprises the steps of: controlling the LED display device to display the first, second and third monochromatic images; The first, second and third monochrome pictures displayed by the LED display device are shot once to obtain a plurality of first, second and third detection images corresponding to different moments; After all shooting is completed, the multiple first, second and third detection images are respectively analyzed and processed to obtain the brightness attenuation of multiple first color, multiple second color and multiple third color LED light spots information; and evaluating the heat dissipation uniformity of the LED display device according to the distribution of the brightness attenuation information of the plurality of first, second and third color LED light points. The present invention utilizes the temperature-related characteristics of LED brightness attenuation to indirectly obtain the temperature distribution of the LED display device when displaying, thereby achieving the purpose of detecting the uniformity of heat dissipation.
Description
technical field [0001] The invention relates to the technical field of display screen detection, in particular to a detection method 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 application range is small and the cost is...
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IPC IPC(8): G09G3/32G09G3/00
Inventor 袁胜春杨城朱海天赵小明宗靖国
Owner XIAN NOVASTAR TECH