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Transparent liquid crystal display device

A technology of transparent liquid crystal display and liquid crystal layer, used in static indicators, instruments, nonlinear optics, etc., can solve the problems of low contrast, insufficient black state, unable to solve transparent display, etc., and achieve the effect of high contrast and high transparency

Active Publication Date: 2013-09-11
SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] but figure 2 In the transparent liquid crystal display device shown in the prior art, the light from the backlight 200 passes through the light guide plate 203 and enters the transparent liquid crystal display device evenly, which can improve the brightness of the image. panel, so when the image is to display a black state, and the brightness of the back ambient light is high, the black state in the image is not black enough due to the existence of the back ambient light, which seriously reduces the contrast of the display
That is, the technical problem that the information image on the liquid crystal panel also has a high contrast ratio cannot be solved in the prior art.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0050] Please refer to image 3 (For ease of drawing, only the structure of one pixel unit is shown in the embodiment of the present invention), the transparent liquid crystal display device in the embodiment of the present invention has a plurality of pixel units, and the transparent liquid crystal display device includes:

[0051] A first liquid crystal layer 303, and a first polarizer 301 located above the first liquid crystal layer 303;

[0052] a transparent light guide plate 305 located below the first liquid crystal layer 303;

[0053] A backlight 300 located on one side of the transparent light guide plate 305, a second polarizer 311 is arranged between the backlight 300 and the transparent light guide plate 305;

[0054] The second liquid crystal layer 307 is disposed below the transparent light guide plate 305 , and a third polarizer 309 is disposed below the second liquid crystal layer 307 .

[0055] Wherein, the first liquid crystal layer 303 and the second liqui...

example 1

[0059] In Example 1 of the present invention, the first polarizer 301 is set to allow the polarized light in the P direction to pass; different from the first polarizer 301, the second polarizer 311 and the third polarizer 309 are set to Polarized light in the S direction, which is perpendicular to the P direction, is allowed to pass.

[0060] The inventor found that, in Example 1 of the present invention, after the light from the backlight 300 passes through the second polarizer 311, only the polarized light in the S direction remains. When no voltage is applied to the first liquid crystal layer 303, the backlight 300 The polarized light in the S direction is deflected by 90 degrees after passing through the first liquid crystal layer 303, and becomes the polarized light in the P direction, which can pass through the first polarizer 301; when a voltage is applied to the first liquid crystal layer 303, the backlight The polarized light in the S direction in the source 300 is n...

example 2

[0087] Please continue to refer image 3 , in Example 2 of the present invention, different from Example 1, the first polarizer 301 is set to allow the polarized light in the P direction to pass through, and the second polarizer 311 is set to allow the polarized light in the S direction to pass through, the The third polarizer 309 is configured to allow polarized light in the P direction to pass through.

[0088] When no voltage is applied to the first liquid crystal layer 303 of the pixel unit, no matter whether a voltage is applied to the second liquid crystal layer 307, the light in the backlight 300 can pass through the first polarizer 301 of the pixel unit and enter the user’s Line of sight, the pixel units are all displayed in a white state; when a voltage is applied to the first liquid crystal layer 303 of the pixel unit and no voltage is applied to the second liquid crystal layer 307 of the pixel unit, the light in the backlight 300 and the ambient light are uniform. ...

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Abstract

The invention discloses a transparent liquid crystal display device. The transparent liquid crystal display device is provided with a plurality of pixel units, and comprises a first liquid crystal layer, a first polaroid positioned at the upper part of the first liquid crystal layer, a transparent light guide plate positioned at the lower part of the first liquid crystal layer, a backlight source on one side of the transparent light guide plate and a second liquid crystal layer arranged at the lower part of the transparent light guide plate, wherein a second polaroid is arranged between the backlight source and the transparent light guide plate; and a third polaroid is arranged at the lower part of the second liquid crystal layer. The transparent liquid crystal display device provided by the invention has the advantages that the transparent liquid crystal display device can be simply and efficiently controlled; and the higher contrast degree and the better transparent display effect are realized.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a transparent liquid crystal display device. Background technique [0002] Liquid crystal displays are widely used in various fields due to their small size, light weight, and low radiation. [0003] The liquid crystal display panel is the most important component of the liquid crystal display. The working principle of the liquid crystal display is: by changing the voltage applied to the liquid crystal layer to change the deflection angle of the liquid crystal molecules, thereby controlling the rotation direction and polarization state of polarized light, so as to realize the change of the display state of the liquid crystal display. [0004] Please refer to figure 1 The structure of the existing liquid crystal display panel mainly includes: an array substrate 10; a color filter substrate 12 arranged opposite to the array substrate 10; a liquid crystal layer 11 located bet...

Claims

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Application Information

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IPC IPC(8): G02F1/1335G02F1/1347G02F1/133
Inventor 楼均辉马骏霍思涛任娇燕
Owner SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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