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A black background liquid crystal display with a bright picture and its manufacturing process

A liquid crystal display, black background technology, applied in instruments, nonlinear optics, optics, etc., can solve the problems of inability to achieve the use effect, poor contrast, etc., and achieve the effects of low power consumption, good contrast, and low price

Active Publication Date: 2017-02-08
亚世光电(集团)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the contrast of ordinary normally black LCD monitors is very poor without backlight, and the use effect cannot be achieved.

Method used

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  • A black background liquid crystal display with a bright picture and its manufacturing process
  • A black background liquid crystal display with a bright picture and its manufacturing process
  • A black background liquid crystal display with a bright picture and its manufacturing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] When the LED backlight is turned off, such as figure 2 shown.

[0024] S light and P light are natural light with different vibration directions. When the display is driven without voltage, the liquid crystal molecules are parallel to the upper and lower substrates of the glass, and the upper and lower liquid crystal molecules form a 90-degree or 240-degree twist. When the light passes through the upper polarizer, the P light is absorbed, and the S light passes through the liquid crystal to become P light. Polarizer compensation, the light is absorbed by the lower polarizer, showing a black background without reflection effect.

[0025] When the voltage is driven, the liquid crystal molecules are perpendicular to the upper and lower substrates. When the light passes through the upper polarizer 1, the P light is absorbed, and the S light passes through the upper polarizer 1, the liquid crystal layer 4, and the lower polarizer 5. The light passes through the upper and l...

Embodiment 2

[0027] When the LED backlight is turned on, the display principle is as follows: image 3 Shown:

[0028] When the display is driven without voltage, the liquid crystal molecules are parallel to the upper and lower substrates of the glass, and the upper and lower liquid crystal molecules form a 90-degree or 240-degree twist to compensate with the upper and lower polarizers. When the light passes through the lower polarizer 5, the P light is absorbed, and the S light passes through. The liquid crystal layer 4 becomes P light, and the light is absorbed by the upper polarizer, showing a black opaque effect.

[0029] When driven by voltage, the liquid crystal molecules are perpendicular to the upper and lower substrates, the light passes through the DBEF-A diaphragm 6, the light passes through the lower polarizer 5, the P light is absorbed, the S light passes through the lower polarizer 5, the liquid crystal layer 4, and the upper polarizer Sheet 1, forms the graphic display of t...

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PUM

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Abstract

A liquid crystal display with a black background and a bright picture and its manufacturing process utilize the existing LCD production process and the characteristic of selective light reflection of DBEF-A to produce a liquid crystal display with a bright picture with a black background. Compared with the existing technology, the beneficial effects of the present invention are: when there is no backlight, the background is black, showing bright and reflective patterns, the patterns are clear, and the contrast is good; when the backlight is turned on, the background is black, and the pattern of the color of the backlight is displayed, High Brightness. It can achieve good contrast with or without backlight, the picture is clear, and achieve the effect of low power consumption, energy saving, and power saving; the bright picture display under the black background can make TN mode, STN mode, and TN mode The background is whiter, the contrast is higher, and the price is lower; the STN mode has a wider viewing angle and more display content.

Description

technical field [0001] The invention relates to the technical field of displays, in particular to a liquid crystal display. Background technique [0002] A liquid crystal display is a widely used flat-panel display, featuring low power consumption, thin profile, light weight, and low driving voltage. The liquid crystal display itself cannot emit light, and relies on the modulation of external light to achieve display. Conventional liquid crystal display methods include TN display mode suitable for low-channel drive and STN display mode suitable for high-channel drive. Liquid crystal displays are divided into positive display with light background and dark picture and negative display with dark background and light text picture. Negative display type liquid crystal display (especially liquid crystal display with black background) has higher contrast. However, when there is no backlight, the contrast of ordinary normally black liquid crystal displays is very poor, and the us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1335G02F1/1333
Inventor 李翠新侯英光李晓娜
Owner 亚世光电(集团)股份有限公司