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Liquid crystal material color domain widening device

A liquid crystal material, color gamut technology, applied in nonlinear optics, instruments, optics, etc., can solve the problems of difficult preparation, high cost, and complex structure of wide color gamut light sources, and achieve excellent color gamut widening devices. The effect of small constraints and simple device structure

Pending Publication Date: 2018-09-04
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a liquid crystal material color gamut widening device in order to solve the problems of difficult preparation, complex structure and high cost of the existing wide color gamut light source

Method used

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  • Liquid crystal material color domain widening device
  • Liquid crystal material color domain widening device
  • Liquid crystal material color domain widening device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as image 3 (a) shows a structural diagram of a liquid crystal material color gamut widening device. The polarizing and polarizing device 1 uses a polarizer, and the angle of the light transmission axis is 0 degrees. Under this benchmark, the first liquid crystal layer 21 adopts a liquid crystal cell structure, wherein Including glass substrate 211, alignment layer (the material of the alignment layer described in the present invention is polyimide) 212, liquid crystal layer 213, alignment layer 214, glass substrate 215, and the alignment direction of liquid crystal molecules at both substrates is 0 degree direction, the liquid crystal molecules are left-handedly twisted by adding a chiral agent, and the twist angle is 720 degrees. The liquid crystal material is 5CB liquid crystal, and the thickness of the liquid crystal layer is set to 13.5 microns (that is, the thickness of the liquid crystal layer). The second liquid crystal layer 31 adopts a liquid crystal cell ...

Embodiment 2

[0033] The other structures of the device in this embodiment are the same as in Embodiment 1, except that the twist angle of the liquid crystal molecules in the first liquid crystal layer and the second liquid crystal layer is changed to 540 degrees, and the twist direction is still left-handed in the first liquid crystal layer, and the twist angle in the second liquid crystal layer is still the same. The second liquid crystal layer rotates right.

[0034] Figure 4 (a) is the transmittance spectrum of the liquid crystal material color gamut widening device, in this transmittance spectrum, there is no obvious transmittance peak, and the color gamut widening effect is very poor, Figure 4 (b) is a color gamut diagram obtained when the liquid crystal material color gamut widening device is combined with a KSF-LED backlight LCD panel, and the color gamut coverage area is 104.2% NTSC.

Embodiment 3

[0036] Other structures of the device in this embodiment are the same as those in Embodiment 1, except that the direction of the transmission axis of the analyzer and polarizer is changed to the direction of 0 degrees.

[0037] Figure 5 (a) is the transmittance spectrum of the liquid crystal material color gamut widening device. From the transmittance spectrum, it can be seen that the device not only has no color gamut enhancement effect, but will reduce the color gamut of the display, Figure 5 (b) is a color gamut diagram obtained when the liquid crystal material color gamut widening device is combined with a KSF-LED backlight LCD panel, and the color gamut coverage area is 82.4% NTSC.

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Abstract

The invention discloses a liquid crystal material color domain widening device which comprises a bias initiation polarization device, a first liquid crystal layer, a second liquid crystal layer and abias detection polarization device in sequence in the light path direction in parallel. The angle of the light-permeable axis direction of the bias initiation polarization device is 0 degree. On the basis, the orientation angle of liquid crystal molecules in the first liquid crystal layer is 0 degree, and the distortion angle of the liquid crystal molecules is 720 degrees; the orientation angle ofliquid crystal molecules in the second liquid crystal layer is 0 degree, and the distortion angle of the liquid crystal molecules is 720 degrees. The liquid crystal material color domain widening device is simpler in structure on the premise of realizing the same color domain widening effect and is a more excellent color domain widening device without the view angle problem.

Description

technical field [0001] The invention relates to a color gamut widening device composed of a liquid crystal material and a polarizing device, which can be applied to display devices and light source spectrum control. Background technique [0002] In recent years, high color gamut light sources have become a research hotspot. The color gamut of a light source depends on the luminous quality of the light source, including the position of the luminous peak in the spectrum and the full width at half maximum of the luminous peak. The position of the luminous peak determines the color of the color. The closer the peak position is to the wavelength range of the three primary colors of red, green and blue, the better the color rendering characteristics of the light source. The full width at half maximum of the luminescence peak determines the purity of the color. The narrower the full width at half maximum of the luminescence peak, the purer the color, and the color of the light sourc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1335
CPCG02F1/133528G02F1/133536G02F1/133531G02F1/133548
Inventor 孙玉宝牛瑞张弛马红梅
Owner HEBEI UNIV OF TECH
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