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Light guide plate, backlight module with light guide plate and processing method of light guide plate

A backlight module and light guide plate technology, which is applied in the field of light guide plates, can solve problems such as difficult standardization and inability to control the quality of light guide plates, and achieve the effects of reducing impact, avoiding total reflection, and improving light uniformity

Active Publication Date: 2017-04-05
苏州茂立光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is difficult to standardize, and the quality of mass-produced light guide plates cannot be controlled

Method used

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  • Light guide plate, backlight module with light guide plate and processing method of light guide plate
  • Light guide plate, backlight module with light guide plate and processing method of light guide plate
  • Light guide plate, backlight module with light guide plate and processing method of light guide plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] figure 1 It is a schematic structural diagram of the backlight module 200 according to Embodiment 1 of the present invention. As shown in the figure, the backlight module 200 includes a light bar 210 and a light guide plate 100 . The light bar 210 has at least one light source 212 . The light guide plate 100 includes a plate body 110 and a positioning groove 120 . The plate body 110 has a light exit surface 112 , a light incident side 114 adjacent to the light exit surface 112 , and a positioning side 116 adjacent to the light exit surface 112 and the light incident side 114 . The positioning slot 120 is located on the positioning side 116 and adjacent to the light incident side 114 . When assembling the backlight module 200, the positioning groove 120 of the light guide plate 100 can be used to engage the fixing member 222 (such as a positioning post) of the back plate 220, so that the light guide plate 100 is not easy to change due to moisture absorption or thermal...

Embodiment 2

[0068] Figure 4 It is a schematic structural diagram of a backlight module 200a according to Embodiment 2 of the present invention. As shown in the figure, the backlight module 200a includes a light bar 210 and a light guide plate 100a. The light guide plate 100 a has a positioning groove 120 , a light emitting surface 112 , a light incident side 114 and a positioning side 116 . its with figure 1 The difference between the related embodiments is that: the light guide plate 100a further includes a protruding portion 130 (also called a lug). The protruding portion 130 is adjacent to the light incident side 114 , and the positioning groove 120 is located on the protruding portion 130 .

[0069] Figure 5 for Figure 4 A partial enlarged view of the light guide plate 100a. Also refer to Figure 4 and Figure 5 , in this embodiment, the protrusion 130 has a top surface 132 opposite to the positioning side 116 , and the positioning groove 120 is located on the top surface 1...

Embodiment 3

[0072] Figure 6 It is a schematic structural diagram of a light guide plate 100b according to Embodiment 3 of the present invention. The light guide plate 100b has a positioning groove 120 , a light emitting surface 112 , a light incident side 114 , a positioning side 116 and a protruding portion 130 . and Figure 4 The light guide plate 100 a is different in that: the two sides of the protruding portion 130 of the light guide plate 100 b are respectively adjacent to the light incident side 114 and the positioning side 116 . That is to say, the protruding portion 130 is located at the corner of the light guide plate 100b.

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PUM

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Abstract

The invention discloses a light guiding plate, a backlight module with the light guiding plate and a machining method of the light guiding plate. The backlight module comprises a lamp bar and the light guiding plate, the lamp bar is provided with at least one light source, the light guiding plate is provided with a light outgoing surface, a light incoming side face, a positioning side face and a positioning groove, and the positioning groove is provided with a plurality of transverse grains. The light guiding plate comprises a plate body and the positioning groove, the plate body is provided with the light outgoing surface, the light incoming side face and the positioning side face which are all connected adjacently, the positioning groove is located in the positioning side face and adjacent to the light incoming side face, and the positioning groove is provided with the transverse grains. The machining method of the light guiding plate includes the steps that the light guiding plate is provided; the light incoming side of the light guiding plate is determined; the positioning groove is formed in the adjacent side of the light incoming side; cast milling is performed on the positioning groove so that the positioning groove is provided with the transverse grains. Light can pass the transverse grains of the positioning groove so that total reflection of the light on the positioning groove can be damaged, and the problem that interference is formed on the positioning groove in the aspect of optical design can be effectively solved.

Description

technical field [0001] The invention relates to a light guide plate used in a TV screen, in particular to a light guide plate with positioning grooves near the light incident side, a backlight module with the light guide plate and a processing method for the light guide plate. Background technique [0002] In the backlight module, since the light guide plate will expand and shrink due to moisture absorption, in order to avoid the distance between the light-emitting diode (LED) and the light guide plate after expansion and contraction, the two sides of the light guide plate near the light incident side of the LED (commonly known as heaven and earth) are generally placed. line) to make a positioning groove, and use the positioning column of the frame and the back plate to engage with the positioning groove to position the light guide plate. In this way, even if the light guide plate expands, it will not affect the distance between the LED and the light guide plate. [0003] H...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/00F21S8/00F21V8/00F21V19/00F21Y115/10
CPCF21S8/00F21V19/001G02B6/0088
Inventor 高铭圳林佳鸿陈家伦许琇玲陈明威潘彦霖
Owner 苏州茂立光电科技有限公司
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