Backlight module and liquid crystal display device

Abstract

The back light module consists of one frame, one reflecting sheet, at least one lamp tube, one diffusion board, several optical diaphragms and at least one support member. The reflecting sheet is configured in the bottom of the frame, the lamp tube is configured inside the frame and over the reflecting sheet, the diffusion board is configured on the frame and located over the lamp tube, the optical diaphragms are configured on the diffusion board, and the support member on the reflecting sheet includes two support parts to support the diffusion board and the lamp tube separately.

Description

technical field [0001] The present invention relates to a backlight module (Back Light Module) and a liquid crystal display (Liquid Crystal Display, LCD), and in particular to a backlight module and a backlight module capable of simultaneously supporting a diffuser plate and a lamp tube to avoid deformation of both. LCD Monitor. Background technique [0002] In order to adapt to the modern lifestyle, the volume of video or image devices is becoming thinner and thinner. Although the traditional cathode ray display (CRT) still has its advantages, due to the structure of the internal electronic cavity, the display is bulky and takes up space, and there are still problems such as radiation damage to the eyes when displaying. Therefore, flat panel displays developed in conjunction with optoelectronic technology and semiconductor manufacturing technology, such as liquid crystal displays (LCDs), organic light emitting displays (OLEDs) or plasma displays (Plasma Display Panels, PDP...

AI Technical Summary

Problems solved by technology

[0007] If used as figure 1 Although the shown backlight module 100 can support the diffuser plate 108 to avoid warping and deformation of the diffuser plate 108, however, this structure cannot support the lamp tube 106. When the size of the liquid crystal display panel is larger, the lamp tube The size of 106 will also increase accordingly, so that the lamp tube 106 is easily warped and deformed due to insufficient rigidity, thereby affecting the optical characteristics of the backlight module 100

[0008] On the other hand, if the backlight module 200 shown in FIG. 2 is used, although the lamp tube 206 can be supported to avoid warping and deformation of the lamp tube 206, this structure cannot support the diffuser plate 208. When the liquid crystal When the size of the display panel is larger, the size of the diffuser 208 will also be larger, so that the diffuser 208 is prone to warping and deformation due to insufficient rigidity or thermal expansion, which will also affect the optical characteristics of the backlight module 200

Images