Backlight source and display device

Abstract

The invention provides a backlight source. The backlight source comprises a back board, a reflecting sheet arranged in the back board, a light guide board arranged above the reflecting sheet, and a plurality of optical membranes arranged above the light guide board. At least one through hole penetrating through the reflecting sheet, the light guide board and the optical membranes at the same time is formed in edge areas of the reflecting sheet, the light guide board and the optical membranes. The back board is provided with positioning columns penetrating through the through holes. Each positioning column comprises a positioning column body and an elastic material layer arranged on the side face of the positioning column body. Correspondingly, the invention further provides a display device. According to the backlight source and the display device, the possibility of deformation of the light guide board, the optical membranes and the reflecting sheet can be reduced in the high-temperature and high-humidity test.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight source and a display device including the backlight source. Background technique [0002] The liquid crystal display includes a display panel and a backlight. The backlight includes a reflector, a light guide plate and several optical films. When the backlight is shaken, the reflector, the light guide plate and the optical film will move relative to each other, resulting in Wear and tear between them will affect the light output effect of the backlight. [0003] In order to solve this problem, the prior art proposes a method of fixing the optical film through a fixing column. For example, the patent publication No. 102798035A discloses a liquid crystal display device and its backlight module, such as figure 1 As shown, a perforation 131 is provided at a corner of the optical film 13 , and the optical film 13 is sleeved on the fixing post 14 by using the perforation ...

AI Technical Summary

Problems solved by technology

However, high-temperature and high-humidity tests are required in the production process of liquid crystal displays. During the test process, the optical film, light guide plate and reflector are prone to expand and squeeze the fixing column, thereby causing deformation. If the hole diameter of the perforation is increased to provide expansion space, then there will be a collision between each diaphragm and the fixed column

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