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Backlight module and display device

A backlight module and backplane technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of vignetting and bright corners, and achieve the effect of preventing thermal expansion.

Active Publication Date: 2020-04-17
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for a narrow bezel display device, if the above-mentioned side-type backlight module is used, the two corners on the light guide plate 10 need to be cut to match the bent part on the back plate 30, which will result in dark corners and bright corners. horn

Method used

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  • Backlight module and display device

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Embodiment Construction

[0020] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0021] Aiming at the technical problem in the prior art that the light guide plate and the light bar are fixed and limited by bending the back plate in the backlight module, bright corners and dark corners are easily generated, the present invention provides a backlight module with a structure Simple, it can ensure the distance between the light guide plate and the LED, and at the same time prevent bright and dark corners.

[0022] Such as figure 2 As shown, the backlight module provided by the present invention includes: a light guide plate 100, a back plate and a light bar 300, the back plate includes a first side 200 opposite to the light incident surface of the light guide plate 100, and the light The strip 30...

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Abstract

The invention provides a backlight module and a display device. The backlight module comprises a light guide plate, a back plate and a lamp bar. The back plate comprises a first side face opposite to the light inlet face of the light guide plate, and the lamp bar is fixed to the first side face of the back plate. A limiting pillar structure used for limiting the space between the lamp bar and the light guide plate to a predetermined value is arranged between the first side face of the back plate and the light inlet face of the light guide plate. In the backlight module, the limiting pillar structure is arranged between the light guide plate and the lamp bar to conduct fixing and limiting on the light guide plate and the lamp bar so as to ensure the distance between the light guide plate and the lamp bar and prevent the lamp colliding phenomenon caused by heating expansion of the light guide plate. Compared with the manner that a back plate is bent in the prior art, the size of the limiting pillar structure can be designed according to needs, the light guide plate does not need to be grooved, and the problems of bright corners and dark corners can be avoided.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight module and a display device. Background technique [0002] A liquid crystal display (LCD, Liquid Crystal Display) is a commonly used flat panel display at present, and a backlight module is an important part of the liquid crystal display, which is used to provide a light source for the liquid crystal panel when the liquid crystal display is working. With the advancement of LED technology, high-power LEDs (Light Emitting Diodes) are gradually used in backlight sources. [0003] Backlight modules are divided into side-type backlight modules and direct-type backlight modules according to the incident position of the light source. The direct type backlight module is to install the LED (Light Emitting Diode) behind the liquid crystal panel to directly form a surface light source for the liquid crystal panel; while the side type backlight module is to set multiple LED lig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13357
CPCG02F1/133615G02F1/133607
Inventor 袁静
Owner BOE TECH GRP CO LTD
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