Liquid crystal panel, liquid crystal display, and method for manufacturing a yellow-dye polarizer

Patent metadata

Field	Value
Publication number	US-10585306-B2
Application number	US-201715570237-A
Country	US
Kind code	B2
Filing date	Jul 26, 2017
Priority date	Jul 6, 2017
Publication date	Mar 10, 2020
Grant date	Mar 10, 2020

Abstract

An LC panel stacked with a blue backlight module is disclosed. The LC panel includes first and second yellow-dye polarizers, and further includes a first substrate, an LC layer, and a second substrate which are sequentially stacked-up. The first yellow-dye polarizer is sandwiched between the LC layer and the first substrate. The second yellow-dye polarizer is sandwiched between the second substrate and the LC layer, or is disposed on the surface of the second substrate where is far from the LC layer. The polarization direction of the first yellow-dye polarizer is perpendicular to the polarization direction of the second yellow-dye polarizer. The blue backlight module provides a blue backlight source irradiating through the displaying image of the LC panel. An LCD and a method for manufacturing a yellow-dye polarizer are disclosed. The utilization efficiency of the blue backlight source is maximized, and the degree of polarization thereof is drastically increased.

First claim

What is claimed is:

1. A liquid crystal panel, oppositely stacked with a blue backlight module, wherein the liquid crystal panel comprises a first yellow-dye polarizer, a second yellow-dye polarizer, a first substrate, a liquid crystal layer, and a second substrate, wherein the first substrate, the liquid crystal layer, and the second substrate are stacked-up in sequence; the first yellow-dye polarizer is sandwiched between the liquid crystal layer and the first substrate; the second yellow-dye polarizer is sandwiched between the second substrate and the liquid crystal layer, or is disposed on a surface of the second substrate that is far from the liquid crystal layer; a polarization direction of the first yellow-dye polarizer is perpendicular to a polarization direction of the second yellow-dye polarizer; and the blue backlight module provides a blue backlight source irradiating through a displaying image of the liquid crystal panel;
wherein the first substrate comprises a plurality of quantum-dot units that are arranged in an array, the quantum-dot units comprising a red quantum-dot unit and a green quantum-dot unit; and the blue backlight source is provided to face the first substrate and transmits blue light that irradiates the red quantum-dot unit and the green quantum-dot unit, such that the red quantum-dot unit and the green quantum-dot unit receive and convert a first portion of the blue light from the blue backlight source into red light and green light, respectively, while a second portion of the blue light from the blue backlight source is allowed to directly transmit through the first substrate and subsequently transmits through the first and second yellow-dye polarizers to project out of the second substrate as blue light;
wherein each of the first yellow-dye polarizer and the second yellow-dye polarizer comprises a dichroism yellow-dye compound, a polymerizable liquid crystal monomer, a photoinitiator, and a photo-stabilizer; and
wherein each absorption wavelength range of the first yellow-dye polarizer and the second yellow-dye polarizer is exactly consistent with the region of the light-emitting wavelength of the blue backlight module.

2. The liquid crystal panel of claim 1 , wherein the dichroism yellow-dye compound comprises one or more of an azo compound, an anthraquinone compound, and a naphthalimide compound.

3. A liquid crystal display, comprising a blue backlight module and a liquid crystal panel, wherein the liquid crystal panel comprises a first yellow-dye polarizer, a second yellow-dye polarizer, a first substrate, a liquid crystal layer, and a second substrate, wherein the first substrate, the liquid crystal layer, and the second substrate are stacked-up in sequence; the first yellow-dye polarizer is sandwiched between the liquid crystal layer and the first substrate; the second yellow-dye polarizer is sandwiched between the second substrate and the liquid crystal layer, or is disposed on a surface of the second substrate that is far from the liquid crystal layer; a polarization direction of the first yellow-dye polarizer is perpendicular to a polarization direction of the second yellow-dye polarizer, the blue backlight module provides a blue backlight source irradiating through a displaying image of the liquid crystal panel, and the blue backlight module is oppositely stacked with the liquid crystal panel;
wherein the first substrate comprises a plurality of quantum-dot units that are arranged in an array, the quantum-dot units comprising a red quantum-dot unit and a green quantum-dot unit; and the blue backlight source is provided to face the first substrate and transmits blue light that irradiates the red quantum-dot unit and the green quantum-dot unit, such that the red quantum-dot unit and the green quantum-dot unit receive and convert a first portion of the blue light from the blue backlight source into red light and green light, respectively, while a second portion of the blue light from the blue backlight source is allowed to directly transmit through the first substrate and subsequently transmits through the first and second yellow-dye polarizers to project out of the second substrate as blue light;
wherein each of the first yellow-dye polarizer and the second yellow-dye polarizer comprises a dichroism yellow-dye compound, a polymerizable liquid crystal monomer, a photoinitiator, and a photo-stabilizer; and
wherein each absorption wavelength range of the first yellow-dye polarizer and the second yellow-dye polarizer is exactly consistent with the region of the light-emitting wavelength of the blue backlight module.

4. The liquid crystal panel of claim 3 , wherein the dichroism yellow-dye compound comprises one or more of an azo compound, an anthraquinone compound, and a naphthalimide compound.

Assignees

• Shenzhen China Star Optoelect

Inventors

• Yan Chunqiu
• Chen Zhenxia
• Chen Lixuan
• Chen Hsiao Hsien
• Lee Yung-Jui

Classifications

• G02F1/133533 Primary

  Colour selective polarisers (G02F1/1347 takes precedence) · CPC title

• G02F1/133514

  Colour filters · CPC title

• G02B5/3025

  Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state (G02B5/3008, G02B5/3016 take precedence) · CPC title

• G02F2202/36

  Micro- or nanomaterials · CPC title

• G02F2202/043

  pleochroic · CPC title