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Side-entry backlight module with protection covers

A side-entry backlight and protective cover technology, which is applied in the field of side-entry backlight modules, can solve the problems of lower product assembly yield, damage to the light guide device 7, and stopper falling off, so as to reduce light energy loss and reduce The number of grains and the effect of improving taste

Inactive Publication Date: 2016-02-17
HEYI INTELLIGENT TECH SHENZHEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, there will be a certain gap between the side-entry light bar and the Light Guide Plate (LGP). For this reason, a stopper is generally placed on the PCB to prevent the LGP from moving and damaging the LED, such as figure 1 As shown, the gap between the LED device 6 and the light guide device 7 is generally more than 0.5mm, resulting in a decrease in the light efficiency of the LED device 6 by more than 10% (compared to the situation of zero gap between the LED device 6 and the light guide device 7); On the other hand, if the stopper 8 is placed on the side-entry light bar 5 where the LED device 6 is located, the stopper 8 will easily fall off and the stopper 8 will partially damage the light guide device 7, reducing the yield rate of product assembly.

Method used

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  • Side-entry backlight module with protection covers
  • Side-entry backlight module with protection covers
  • Side-entry backlight module with protection covers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: figure 2 The schematic structural diagram of the side-entry backlight module with a protective cover provided by the embodiment of the present invention, it can be clearly seen from the figure that the side-entry backlight module with a protective cover provided by this embodiment includes a light guide plate 4, A light bar and a protective cover 3, the light bar includes a plurality of light sources 2, each light source 2 is provided with a protective cover 3, the protective cover 3 is fixedly installed on the light bar, and the light source 2 is arranged on a corresponding protective cover In the cover 3, the end of the protective cover 3 away from the light bar is provided with a light outlet opening, and the end of the protective cover 3 with the light outlet opening is closely arranged on the light incident surface of the light guide plate 4, wherein the The light source 2 is an LED element, and the light bar also includes a PCB board 1 on which the lig...

Embodiment 2

[0027] Embodiment 2: The difference from Embodiment 1 is that the fixing method of the protective cover 3 and the PCB board 1 is as follows: the PCB board 1 is provided with openings, and the protective cover 3 is provided with openings corresponding to the openings. A positioning post matched with the hole, the positioning post cooperates with the opening to fix the protective cover 3 on the PCB 1 .

[0028] In this embodiment, the distance from the light source 2 in the protective cover 3 to the light incident surface of the light guide plate 4 is 0.2mm, the protective cover 3 is made of plastic or metal material, and each protective cover 3 is made of The metal square body hollowed out in the middle forms the cover body of the protective cover 3 . Other features are the same as those in Embodiment 1, and will not be repeated here.

Embodiment 3

[0029] Embodiment 3: Different from Embodiments 1 and 2, this embodiment does not limit the number of protective covers 3 and light sources 2 to multiples. When a single protective cover 3 and light source 2 are used as a single light-emitting unit, multiple The above-mentioned light-emitting units forming a light bar can also realize the present application. Other features are the same as those in Embodiment 1, and will not be repeated here.

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Abstract

The invention relates to the field of backlight modules, and discloses a side-entry backlight module with protection covers. The side-entry backlight module comprises a light guide plate, a light bar and protection covers, wherein the light bar comprises multiple light sources, one light source is provided with one protection cover, the protection covers are fixedly arranged on the light bar, the light source is arranged in the corresponding protection cover, one end, away from the light bar, of the protection cover is provided with a light outlet, and one end, having the light outlet, of the protection cover is tightly attached to the light incident surface of the light guide plate. The side-entry backlight module with protection covers, disclosed by the invention, can be easily arranged on the light incident surface of the LGP (light guide plate), and can effectively separate a LED component from the LGP, and the protection covers can transmit light emitted from the LED component to the light incident surface of the LGP in high energy efficiency moe, and improve the light-emitting curve of the LED component.

Description

technical field [0001] The invention relates to the field of backlight modules, in particular to a side-entry backlight module with a protective cover. Background technique [0002] Liquid crystal display is the most widely used display product at present. A common liquid crystal display is mainly composed of a liquid crystal panel and a backlight module. The liquid crystal panel itself does not emit light, and the light source of the panel is provided by the backlight module. Today's TVs have higher and higher requirements for appearance, and the requirements for the thickness of the TV set are getting thinner and thinner, which also makes side-lit backlight TVs become mainstream. In the prior art, there will be a certain gap between the side-entry light bar and the Light Guide Plate (LGP). For this reason, a stopper is generally placed on the PCB to prevent the LGP from moving and damaging the LED, such as figure 1 As shown, the gap between the LED device 6 and the light ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357
CPCG02F1/133615
Inventor 曹谦余亚军苏文华姚键潘柏宇王冀
Owner HEYI INTELLIGENT TECH SHENZHEN CO LTD
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