Backlight and display

A backlight and light source technology, applied in the field of display, can solve the problems of poor transparency of the light guide plate, the inability to apply transparent display, and large size of the ordinary light guide plate

Inactive Publication Date: 2012-09-19
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the dots are made by screen printing, their size is relatively large, which also leads to poor transparency of the light guide plate.
In addition, in order to improve the uniformity and light effici...

Method used

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  • Backlight and display

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Embodiment Construction

[0017] The backlight source proposed by the present invention is described in detail as follows with reference to the accompanying drawings and embodiments.

[0018] The core idea of ​​the present invention is: by using the liquid crystal as the dot control of the light guide plate, and by adding and removing electricity, the liquid crystal on the patterned electrode can be in a light-scattering state and a transparent state, so that a balance between backlight and transparency can be found. Dot, as the backlight source of the display, can realize the transparency of the backlight source for transparent display, especially transparent TFT-LCD display.

[0019] like figure 1 As shown, a backlight source of a display according to an embodiment of the present invention includes: a light guide plate 1, a light source 3 arranged on one side of the light guide plate 1, a lamp reflector 3 arranged around the light source 2, and a substrate 4 and a The liquid crystal layer 5 between ...

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PUM

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Abstract

The invention discloses a backlight and a display and relates to the technical field of displays. The backlight comprises a transparent light guide plate, a light source arranged at one side of the light guide plate and light reflecting plates externally arranged around the light source; the backlight further comprises a transparent base and a liquid crystal layer arranged between the base and the light guide plate; the liquid crystal of the liquid crystal layer is PDLC (polymer dispersed liquid crystal) or PNLC (polymer network liquid crystal); a first transparent electrode layer is arranged on the base, and a second transparent electrode layer corresponding to the first transparent electrode layer is arranged below the light guide plate. The backlight source can find a variable balance point between the backlight and the transparent part by taking the liquid crystal as network point control; and different network point distributions can be adjusted in the common backlight in a transparent display and the transparent display.

Description

technical field [0001] The present invention relates to the technical field of displays, in particular to a backlight which can be used for transparent display or can be switched between two modes of transparent display and normal display, and a display using the backlight. Background technique [0002] In Thin Film Transistor-Liquid Crystal Display (TFT-LCD) display, the backlight source is very important. The backlight source is a light source located behind the liquid crystal display (LCD), because the LCD itself does not emit light, it displays Graphics or characters are the result of its modulation of light, and the luminous effect of the backlight will directly affect the visual effect of the liquid crystal display module. Samsung and others have introduced an LCD display with a transparent display, which can be used for window display, etc., which utilizes external ambient light as the backlight of the LCD. Because the common LCD backlight is opaque and difficult to ...

Claims

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Application Information

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IPC IPC(8): F21S8/00F21V8/00F21V23/00G02F1/13357
Inventor 张卓曾庆慧
Owner BOE TECH GRP CO LTD
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