Liquid crystal display panel comprising quantum rods and liquid crystal molecules wherein long axes of the quantum rods and liquid crystal molecules are in the same direction and method of forming the same

Patent metadata

Field	Value
Publication number	US-9835891-B2
Application number	US-201514787351-A
Country	US
Kind code	B2
Filing date	Oct 15, 2015
Priority date	Aug 17, 2015
Publication date	Dec 5, 2017
Grant date	Dec 5, 2017

Abstract

The present invention proposes an LCD panel and a method for forming the same. The LCD panel includes an isolator disposed between two adjacent liquid crystal units. Liquid crystal molecules of red liquid crystal units and green liquid crystal units are mixed with quantum rods (QRs) of corresponding colors. The red liquid crystal units correspond to a position of the red pixels, the green liquid crystal units correspond to a position of the green pixels. The QRs and liquid crystal molecules have long axes and directions of the long axes of QRs and liquid crystal molecules are the same.

First claim

What is claimed is:

1. A liquid crystal display (LCD) panel, comprising:
a first substrate, comprising:
a first base substrate;
an isolation layer, disposed on the first base substrate, comprising a plurality of isolators; and
a first polarizer, disposed on an external side of the first substrate;

a second substrate, disposed opposite to the first substrate, comprising a switch array layer, data lines and scan lines surrounding a plurality of pixel units comprising red, green and blue pixels, the switch array layer comprising a plurality of thin film transistors;
a second polarizer, disposed on an external side of the second substrate; and
a liquid crystal layer, comprising one or more red liquid crystal units, one or more green liquid crystal units and one or more blue liquid crystal units, wherein one of the isolators is disposed between two adjacent liquid crystal units;
wherein liquid crystal molecules of the red liquid crystal units and green liquid crystal units are mixed with quantum rods (QRs) of corresponding colors; the red liquid crystal units correspond to a position of the red pixels, the green liquid crystal units correspond to a position of the green pixels, and the blue liquid crystal units correspond to a position of the blue pixels; the QRs and liquid crystal molecules have long axes and directions of the long axes of QRs and liquid crystal molecules are the same,
wherein when the TFTs are closed, the QRs, along with the liquid crystal molecules, align in a twisted manner spanning from the second substrate to the side of the first substrate; under light of a backlight source, the polarization direction of the second polarizer is the same as the long axes of the QRs close to the side of the second substrate; the QRs rotate with the liquid crystal molecules, so that the direction of the long axes of the QRs close to the side of the first substrate is the same as the polarization direction of the first polarizer; the LCD panel is in a first state of brightness, and
wherein spacers are disposed on the first substrate; the material of the spacers is the same as the isolators.

2. The LCD panel of claim 1 , wherein the liquid crystal molecules of the red liquid crystal units are mixed with red QRs; the liquid crystal molecules of the green liquid crystal units are mixed with green QRs; the liquid crystal molecules of the blue liquid crystal units are mixed with blue QRs; the backlight source emits white light to the LCD panel.

3. The LCD panel of claim 1 , wherein the liquid crystal molecules of the red liquid crystal units are mixed with red QRs; the liquid crystal molecules of the green liquid crystal units are mixed with green QRs; the liquid crystal molecules of the blue liquid crystal units are not mixed with QRs; a backlight source emits blue light to the LCD panel.

4. The LCD panel of claim 1 , wherein when the TFTs are not fully opened, the QRs, along with the liquid crystal molecules, align in a twisted manner spanning from the second substrate to the side of the first substrate; under the light of the backlight source, the polarization direction of the second polarizer and the long axes of the QRs close to the side of the second substrate form a set angle; the QRs turn with the liquid crystal molecules, so that the long axes of the QRs close to the side of the first substrate and the polarization direction of the first polarizer form a set angle; the LCD panel is in a second state of brightness.

5. The LCD panel of claim 4 , wherein when the TFTs are fully opened, the QRs, along with the liquid crystal molecules, turn to align perpendicularly to the first substrate spanning from the second substrate to the side of the first substrate; under the light of the backlight source, the polarization direction of the second polarizer is perpendicular to the long axes of the QRs close to the second substrate, while the long axes of the QRs close to the first substrate is perpendicular to the polarization direction of the first polarizer; the LCD panel is in a third state of brightness;
wherein the first state of brightness is larger the second state of brightness, and the second state of brightness is larger than the third state of brightness.

6. The LCD panel of claim 1 further comprising a color resist layer, disposed on the first base substrate, comprising a red color film, a green color film, and a blue color film.

7. The LCD panel of claim 6 further comprising a black matrix between two adjacent color films.

8. A liquid crystal display (LCD) panel, comprising:
a first substrate, comprising:
a first base substrate; and
an isolation layer, disposed on the first base substrate, comprising a plurality of isolators;

a second substrate, disposed opposite to the first substrate, comprising data lines and scan lines surrounding a plurality of pixel units comprising red, green and blue pixels; and
a liquid crystal layer, comprising one or more red liquid crystal units, one or more green liquid crystal units and one or more blue liquid crystal units, wherein one of the isolators is disposed between two adjacent liquid crystal units;
wherein liquid crystal molecules of the red liquid crystal units and green liquid crystal units are mixed with quantum rods (QRs) of corresponding colors; the red liquid crystal units correspond to a position of the red pixels, the green liquid crystal units correspond to a position of the green pixels, and the blue liquid crystal units correspond to a position of the blue pixels; the QRs and liquid crystal molecules have long axes and directions of the long axes of QRs and liquid crystal molecules are the same.

9. The LCD panel of claim 8 , wherein the liquid crystal molecules of the red liquid crystal units are mixed with red QRs; the liquid crystal molecules of the green liquid crystal units are mixed with green QRs; the liquid crystal molecules of the blue liquid crystal units are mixed with blue QRs; a backlight source emits white light to the LCD panel.

10. The LCD panel of claim 8 , wherein the liquid crystal molecules of the red liquid crystal units are mixed with red QRs; the liquid crystal molecules of the green liquid crystal units are mixed with green QRs; the liquid crystal molecules of the blue liquid crystal units are not mixed with QRs; a backlight source emits blue light to the LCD panel.

11. The LCD panel of claim 8 , wherein the second substrate further comprises a switch array layer comprising a plurality of thin film transistors (TFTs); a second polarizer is disposed on an external side of the second substrate, and a first polarizer is disposed on an external side of the first substrate;
when the TFTs are closed, the QRs, along with the liquid crystal molecules, align in a twisted manner spanning from the second substrate to the side of the first substrate; under the light of the backlight source, the polarization direction of the second polarizer is the same as the long axes of the QRs close to the side of the second substrate; the QRs rotate with the liquid crystal molecules, so that the direction of the long axes of the QRs close to the side of the first substrate is the same as the polarization direction of the first polarizer; the LCD panel is in a first state of brightness;
when the TFTs are not fully opened, the QRs, along with the liquid crystal molecules, align in a twisted manner spanning from the second substrate to the side of the first substrate; under the light of the backlight source, the polarization direction of the second polarizer and the long axes of the QRs close to the side of the second substrate form a set angle; the QRs turn with the liquid crystal molecules, so that the long axes of the QRs close to the si

Assignees

• Shenzhen China Star Optoelect

Inventors

• Liu Guohe

Classifications

• G02F1/133528

  Polarisers · CPC title

• G02F1/1368

  in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} · CPC title

• G02F2001/133614

  Physics · mapped topic

• G02F2001/13398

  Physics · mapped topic

• G02F2001/133531

  Physics · mapped topic