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Backlight module and its working method and display device

A backlight module, light technology, applied in lighting devices, optics, light guides, etc., can solve the problem of low flexibility

Active Publication Date: 2018-10-23
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although this method of pasting the anti-spy sheet can play a good anti-spy effect, its flexibility is not high

Method used

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  • Backlight module and its working method and display device
  • Backlight module and its working method and display device
  • Backlight module and its working method and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0047] Figure 4 A schematic structural diagram of a display device provided in Embodiment 2 of the present invention, as shown in Figure 4 As shown, the display device includes: a display panel 7 and a backlight module (consisting of a light guide plate 1, a shading plate 2 and a collimated light source 3), wherein the backlight module is located at the back of the display panel to provide backlight for the display panel, the The backlight module adopts the backlight module in the first embodiment above, and the specific content can refer to the description in the first embodiment above, and will not be repeated here.

[0048] Embodiment 2 of the present invention provides a display device, the display device includes a backlight module, the backlight module includes a light guide plate, a light shielding plate and a collimated light source, wherein the light shielding plate is located between the light guide plate and the collimated light source, and the light guide plate ...

Embodiment 3

[0050] Figure 5 A flow chart of a working method of a backlight module provided in Embodiment 3 of the present invention, as shown in Figure 5 As shown, wherein the backlight module adopts the backlight module in the above-mentioned embodiment one, the specific content can refer to the description in the above-mentioned embodiment one, the working method of the backlight module includes:

[0051] Step S1. When entering the anti-peeping display mode, align the shading area on the visor with the corresponding diffusion dots on the light guide plate. The collimated light source generates collimated light and irradiates it vertically to the visor, and the collimated light passes through it in sequence Light-transmissive areas and collimated light-exit areas between the diffuser dots.

[0052] Step S2. When entering the normal display mode, the shading area on the shading plate is misaligned with the corresponding diffusion dots on the light guide plate, the collimated light sou...

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PUM

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Abstract

The invention discloses a backlight module, its working method and a display device. The backlight module includes: a light guide plate, a shading plate and a collimated light source, wherein the light shading plate is located between the light guide plate and the collimated light source, and the light guide plate includes : Transparent main body and several diffusion dots formed on the transparent main body, a light-transmitting area and several light-shielding areas are formed on the light-shielding plate, the light-shielding area corresponds to the diffusion dots on the light guide plate one by one, and the collimated light source is used to generate collimated light, and make the collimated light shine vertically to the visor. In the present invention, the user can adjust the relative position of the shading plate and the light guide plate according to the actual needs, so that the shading area on the shading plate and the corresponding diffusion dots on the light guide plate are directly aligned or misplaced, so as to realize the anti-peeping display mode and normal display mode switching.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight module, a working method thereof, and a display device. Background technique [0002] With the advancement of technology, portable display devices are becoming more and more popular. For example, people usually use mobile phones or tablet computers to read, study or communicate with text messages when they are riding or waiting for a bus. The content displayed on the mobile phone or tablet computer may be peeped by the neighbors, and the information may be leaked, resulting in the privacy not being protected and causing inconvenience to the user. At present, the privacy of one's own privacy is usually protected by pasting anti-spy sheets on the display device in the market. [0003] Although this method of pasting the anti-spy sheet can play a good anti-spy effect, its flexibility is not high. Once the user wishes to view the display device normally, the privacy-pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/00G02B26/00
CPCG02B6/0041G02B26/00G02B5/0215G02B5/201G02B6/0043G02B6/005G02B27/30F21K9/61F21Y2115/10G02B6/0025G02B27/0955G02F1/1335
Inventor 王鑫杜建华
Owner BOE TECH GRP CO LTD