Edge type backlight module capable of strengthening local cooling

Abstract

The invention discloses an edge type backlight module capable of strengthening local cooling. The part next to at least one incident side edge, of the backplane of the backlight module is provided with a locally strengthened cooling region; and the surface of the locally strengthened cooling region is provided with a strengthened heat-conducting coating and a three-dimensional cooling configuration, thus the heat can be distributed evenly so as to reduce the temperature and the heat exchange area can be increased. Therefore, by adopting the edge type backlight module capable of strengthening local cooling, the influence of high temperature on the chroma and brightness of the light-emitting device can be avoided, the uniformity of the chroma and brightness of the integral liquid crystal display module can be improved and the light-extraction efficiency can be increased.

Description

【Technical field】 [0001] The invention relates to a side-entry backlight module with locally enhanced heat dissipation, in particular to a side-entry backlight module with a locally enhanced heat dissipation area including a reinforced heat conduction coating and a three-dimensional heat dissipation configuration. 【Background technique】 [0002] Liquid crystal display (liquid crystal display, LCD) is a flat panel display device (flat panel display, FPD) that uses the characteristics of liquid crystal materials to display images. Power consumption and other advantages have become mainstream products in the entire consumer market. However, the liquid crystal material of the liquid crystal display cannot emit light by itself, and an external light source must be provided. Therefore, a backlight module is additionally provided in the liquid crystal display to provide the required light source. [0003] Generally speaking, backlight modules can be divided into two types: side-ty...

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Problems solved by technology

[0007] However, there is still a problem in the above-mentioned two kinds of existing side-type backlight modules 90, that is, during the heat dissipation process through the backplane 91, the area of ​​the backplane 91 close to the light source group 95, that is, The area of ​​the back plate 91 adjacent to the side wall portion 911 (that is, the area corresponding to the area of ​​the back plate 91 shown by the arrow) exhibits a phenomenon of uneven temperature distribution because of its certain length: in this area of ​​the back plate 91 The temperature near the central part is relatively high, while the temperature relatively close to the two sides is relatively low, that is, the phenomenon of heat accumulation will occur near the central part in the area of ​​the back plate 91, and also cause the light source group adjacent to the central part The heat dissipation effect of the light-emitting device 951 of 95 is poor, so that the light-emitting device 951 (LED) is affected by high temperature, resulting in uneven chromaticity and luminance, resulting in uneven luminance and chromaticity of the overall liquid crystal display , affecting the visual effect of the client on the product

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