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Lateral entrance type backlight module and display device

An edge-type backlight and module technology, applied in the field of edge-type backlight modules and display devices, can solve the problems of complex structure of display devices and the like

Pending Publication Date: 2016-08-31
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a side-entry backlight module and a display device, which are used to solve the problem that the structure of the display device with anti-peeping function is relatively complicated in the prior art

Method used

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  • Lateral entrance type backlight module and display device
  • Lateral entrance type backlight module and display device
  • Lateral entrance type backlight module and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0032] Mode 1, the angle α and the angle β satisfy the formula β=(180°−α) / 2.

[0033] Such as figure 2 As shown, when the included angle α and included angle β in the micro-triangular prism structure satisfy this formula, the prism sheet 3 can make most of the finally emitted rays approach the normal o direction of its light-emitting surface 32, that is, the prism sheet 3 The viewing angle of the outgoing light of the edge-lit backlight module of the present application can be near the range perpendicular to the light exiting surface.

[0034] Mode 2, the angle α and the angle β satisfy the formula β>(180°−α) / 2.

[0035] Such as image 3 As shown, when the included angle α and included angle β in the micro-triangular prism structure satisfy this formula, the prism sheet 3 can make most of the finally emitted light tilt toward the side where the light bar 2 is located, that is, the prism sheet 3 The viewing angle of the outgoing light of the edge-lit backlight module of the...

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Abstract

The invention relates to the technical field of display, and discloses a lateral entrance type backlight module and a display device. The lateral entrance type backlight module comprises a light guide plate, lamp bars arranged along the light incident side of the light guide plate and a prism lens located on one side of the light emitting face of the light guide plate, wherein the prism lens comprises a light incident face and a light emitting face opposite to the light incident face, the light incident face faces the light guide plate, a plurality of micro triangular prism structures are arrayed and distributed on the light incident face, the bottom of each micro triangular prism structure is an acute triangle, and each micro triangular prism structure comprises a first side face facing the side where the lamp bars are located and a second side face facing the side opposite to the side where the lamp bars are located. The visual angle of emergent ray of the lateral entrance type backlight module is narrow, the lateral entrance type backlight module can be used for anti-peeping display of the display device and the structure of the lateral entrance type backlight module is simple.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an edge-type backlight module and a display device. Background technique [0002] With the development of society, people are becoming more and more aware of personal privacy and commercial secrets. Therefore, anti-peeping technology for display devices, which are necessities of life, has emerged as the times require. At present, the anti-peeping technology commonly used for display devices is to add viewing angle control mechanisms to existing display devices, such as adding 3M anti-peeping films or some active optical components. However, the existing display devices that have added viewing angle control mechanisms The structure is often complicated and the cost is high; therefore, there is an urgent need for an anti-peeping display product with a simple structure in the market. Contents of the invention [0003] The invention provides a side-entry backlight module and a di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357G09F9/00
CPCG02F1/133615G09F9/00
Inventor 陈家洛解晓丽马骋徐善飞
Owner BOE TECH GRP CO LTD
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