Backlight module, production method thereof and display device

A technology of backlight module and back frame, which is applied to identification devices, lighting devices, fixed lighting devices, etc., can solve the problems of large loss and affect the utilization rate of light, and achieve the effect of reducing loss and improving utilization rate of light.

Active Publication Date: 2013-04-17
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In the backlight module in the prior art, when the light emitted by the LED02 is directed to the side of the light guide plate 05, there is a gap D between the two, and there is an air medium in the gap D, and there is also a gap between the light guide plate 05 and the reflection sheet 06. There is also an air medium in the gap d. Therefore, when the light emitted by LED02 propagates inside the backlight module, the light needs to pass through more media, resulting in a greater loss of light at the interface between two adjacent media. , affecting the utilization of light

Method used

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  • Backlight module, production method thereof and display device
  • Backlight module, production method thereof and display device
  • Backlight module, production method thereof and display device

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Embodiment Construction

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0043] Such as figure 2 and image 3 As shown, the backlight module provided by the present invention includes:

[0044] There is a back frame 3 with a recessed portion 32, such as image 3 As shown, the bottom plate 31 of the recessed portion 32 has dots 4, and the bottom plate 31 of the recessed portion 32 is prepared from a reflective plate or the surface of the bottom plate 31 facing the recessed portion is reflective. For example, reflective particles ...

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Abstract

The invention relates to the technical field of display and discloses a backlight module. The backlight module comprises a back frame with a recessed part, a light emitting diode (LED) light tube group and a light guide plate, wherein the bottom plate of the recessed part is provided with a net point, the bottom plate of the recessed part is made of a plate material with a reflecting layer, the LED light tube group is installed on the side of the recessed part of the back frame, the light guide plate is located in the recessed part of the back frame, and the light guide plate, the back frame and the LED light tube group are integrated through the injection molding. The light guide plate, the back frame and the LED light tube group are integrated through the injection molding, the light emitted by an LED transmits to the light guide plate directly, the light which is reflected by the bottom plate of the recessed part transmits to the light guide plate, when the light emitted by the LED light tube group transmits in the backlight module, the light transmits to few mediums, the loss of the light in the backlight module is reduced, and the light utilization rate is improved. The invention also provides a display device with the backlight module and a preparation method of the backlight module.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight module, a preparation method thereof, and a display device. Background technique [0002] In the field of display technology, every time the light emitted by the light source in the backlight module of the display device passes through a dielectric material, a certain loss will occur. In addition to the conversion efficiency problem, the Fresnel interface loss will mainly occur, that is , when light passes through one medium and reaches another medium, reflection losses at the interface of the two media occur. [0003] The overall light loss of the light emitted by the light source of the backlight module is about 30%~50%, and the loss of light is mainly caused by two aspects: one is the loss of light when the light is transmitted in each medium, and the other is the loss of light in the adjacent The loss of reflection at the interface between two media. Among them...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/00F21V17/10F21V19/00G09F9/35F21Y101/02
Inventor 赵扬李萌周振东
Owner BOE TECH GRP CO LTD
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