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Backlight module and manufacture method thereof

A technology of backlight module and manufacturing method, which is applied in the directions of optics, light guide, light source, etc., can solve the problems of small area of ​​metal reflector, high process difficulty, difficult insertion process, etc. The effect of simple process

Inactive Publication Date: 2011-04-20
BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the traditional design, each LED is attached to the LED attachment strip with a special process such as welding, and then the entire LED attachment strip is placed in a metal reflector. Since the LED attachment strip is flexible and relatively long Long, plus the inner area of ​​the metal reflector is small, the insertion process is relatively difficult, the process is difficult, and the positioning accuracy is poor, thus introducing many bad pictures

Method used

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  • Backlight module and manufacture method thereof
  • Backlight module and manufacture method thereof
  • Backlight module and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 As shown, this embodiment provides a backlight module, which includes a light guide plate 1 , a light source 2 , and an optical film 4 .

[0027] In this embodiment, the light guide plate is quadrilateral, and the groove is provided at at least one corner of the light guide plate. Correspondingly, a light emitting source is embedded in the groove of the light guide plate. The light source is a light emitting diode, referred to as LED.

[0028] Further, the grooves are arranged at the four corners of the light guide plate.

[0029] Because the light source is arranged at the four corners of the light guide plate, the liquid crystal display with the backlight module has good picture uniformity, and its uniformity can reach 80% (taking the 14.1 "product as an example, the liquid crystal display of the traditional design method Uniformity is 70%, the following are 14.1" products as an example).

[0030] Further, chamfered surfaces are provided at the fou...

Embodiment 2

[0035] This embodiment provides another backlight module, the structure of which is basically the same as that of the backlight module in Embodiment 1, except that the structure of the light guide plate is different.

[0036] Such as figure 2 As shown, in this embodiment, one side of the light guide plate is provided with a wave-shaped groove 5, and each LED is embedded in each groove, and the light-emitting surface of the LED is opposite to the trough of the groove.

[0037] It should be pointed out that the number of grooves depends on the length of the side of the light guide plate and the width of the grooves.

[0038] In this embodiment, the number of grooves is: N=(L / 5D, L / D), where N is a natural number;

[0039] Wherein, L is the side length of the light guide plate, and D is the minimum width of a groove.

[0040] In this embodiment, 10 grooves are provided on one side of the light guide plate, correspondingly, 10 LEDs are used.

[0041] Such as image 3 As shown...

Embodiment 3

[0050] This embodiment provides a method for manufacturing a backlight module, and the method for manufacturing the backlight module includes steps:

[0051] S10, cutting grooves around the light guide plate;

[0052] S11. Embedding a light emitting source in the groove.

[0053] In the method for manufacturing the backlight module, the light source is embedded in the groove, the assembly process of the light source is simple, the positioning is accurate, the production efficiency is improved, and the traditional lamp metal reflector does not need to be designed, thereby greatly reducing the cost.

[0054] Further, the grooves are cut out around the light guide plate as follows:

[0055] A groove is cut in at least one corner of the light guide plate.

[0056] In the manufacturing method of the backlight module, a groove is cut at least one corner of the light guide plate.

[0057] Cutting a groove at least one corner of the light guide plate is specifically:

[0058] cutt...

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Abstract

The invention discloses a backlight module and a manufacture method thereof, relating to the field of liquid crystal displays and solving the problems of complicated assembly process and inaccurate positioning of a luminous source of the backlight module in the traditional technology. The backlight module comprises a light guide plate, wherein the periphery of the light guide plate is provided with a groove and the luminous source is embedded in the groove. The manufacture method of the backlight module comprises the steps of cutting the groove at the periphery of the light guide plate; and embedding the luminous source into the groove. The invention can be used for manufacturing the liquid crystal display.

Description

technical field [0001] The invention relates to a liquid crystal display, in particular to a backlight module and a manufacturing method thereof. Background technique [0002] Currently, liquid crystal displays are widely used in various daily necessities and office supplies, such as computers, mobile phones, bulletin boards, and the like. [0003] The liquid crystal display includes components such as a liquid crystal display panel and a backlight module (abbreviated as BLU). Diaphragm. [0004] In the backlight module of a traditional liquid crystal display, one side (or both sides) of the light guide plate is a light source, and the light emitted by it passes through the light incident surface of the light guide plate, and then passes through the diffusion sheet, prism sheet, protective sheet, etc. The backlight module is injected from the optical film. [0005] In the traditional design, each LED is attached to the LED attachment strip with a special process such as w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/00F21V8/00F21V19/00G02F1/13357F21Y101/02
Inventor 陈岩
Owner BEIJING BOE OPTOELECTRONCIS TECH CO LTD