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Backlight module

A technology of backlight module and back frame, which is applied in the direction of identification devices and instruments, and can solve problems affecting display quality and optical film wrinkles

Active Publication Date: 2020-12-08
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the existing backlight module, the optical film will expand and contract due to temperature changes, which may cause the optical film to abut against the side of the back frame and cause wrinkles, thereby affecting the display quality.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0062] figure 1 It is a schematic diagram of the appearance of the display device 1 with the backlight module 100 according to an embodiment of the present invention. figure 2 for figure 1 A schematic cross-sectional view of the display device 1 taken along line A-A. see figure 1 and figure 2 , the display device 1 includes a backlight module 100 and a display panel 200 . The backlight module 100 includes a back frame 110 , an upper frame 120 and a support plate 130 . The back frame 110 is combined with the upper frame 120 , and the support plate 130 is located in a space S between the back frame 110 and the upper frame 120 .

[0063] The back frame 110 has a base plate 111 and at least one limiting wall 112 connected to the base plate 111 (such as figure 2The illustrated first limiting wall 1121). The first limiting wall 1121 stands on the upper surface 111 a of the bottom plate 111 , and the first limiting wall 1121 is adjacent to the first edge L1 of the bottom pl...

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Abstract

A backlight module includes a back frame, an upper frame and a support plate. The back frame has a bottom plate and a first positioning wall. The first positioning wall is standing on a upper surface of the bottom plate and adjacent to a first edge of the bottom plate. In the vertical projection direction of the bottom plate, there is a gap between the vertical projection of an outer surface of the first positioning wall and the vertical projection of the first edge of the bottom plate. An accommodating portion is formed between the outer surface of the first positioning wall and the first edge of the bottom plate. The upper frame has a top cover and a retaining wall. The retaining wall connects a lower surface of the top cover. At least a portion of the retaining wall is located outside the outer surface of the first positioning wall and the retaining wall abuts the back frame. The retaining wall extends into the accommodating portion. The support plate is located in a space between the bottom plate and the top cover, wherein an upper surface of the first positioning wall is not beyond an extended surface of an upper surface of the support plate.

Description

technical field [0001] The invention relates to a backlight module, in particular to a backlight module with a narrow frame. Background technique [0002] The current display device design trend is developing from the previous bulky and heavy appearance to thinner and lighter, and the thickness of the frame of the backlight module is gradually tending to the design of the narrow frame, which makes the size of the frame of the backlight module smaller and in the same Under the size display device, the area of ​​the display screen that can be watched by the display panel is larger, and the visual effect is better. [0003] Generally speaking, in the existing backlight module, the upper frame is disposed on the back frame, and the optical film is located in the space between the top cover of the upper frame and the bottom plate of the back frame. However, for the existing backlight module, due to the expansion and contraction of the optical film due to temperature changes, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09F9/00
CPCG09F9/00
Inventor 郭汉斌郑文琳
Owner AU OPTRONICS CORP
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