Liquid crystal display panel comprising alignment molecules having a core portion, a polarity portion, and a tail portion

Patent metadata

Field	Value
Publication number	US-9448438-B2
Application number	US-201414204431-A
Country	US
Kind code	B2
Filing date	Mar 11, 2014
Priority date	Sep 11, 2013
Publication date	Sep 20, 2016
Grant date	Sep 20, 2016

Abstract

A liquid crystal display panel including a first display substrate, a second display substrate coupled to and spaced apart from the first display substrate, and a liquid crystal layer disposed between the first and second display substrates. The first and second display substrates include inorganic layers containing an inorganic silicon-based material. The liquid crystal layer includes alignment molecules vertically aligned with respect to the inorganic layers, and liquid crystal molecules vertically aligned between the inorganic layers. A manufacturing method of the liquid crystal display panel includes surface-treating the inorganic layers to vertically align the liquid crystal molecules.

First claim

What is claimed is:

1. A liquid crystal display panel comprising:
a first display substrate comprising:
a first base substrate;
pixel electrodes disposed on the first base substrate; and
a first inorganic layer covering the pixel electrodes and comprising an inorganic silicon-based material;

a second display substrate comprising:
a second base substrate spaced apart from the first base substrate;
a common electrode disposed on the second base substrate; and
a second inorganic layer disposed on the common electrode and comprising the inorganic silicon-based material; and

a liquid crystal layer comprising:
alignment molecules vertically aligned with respect to the first inorganic layer and the second inorganic layer; and
liquid crystal molecules vertically aligned between the first inorganic layer and the second inorganic layer,

wherein the alignment molecules comprise:
a core portion;
a polarity portion connected to a first end of the core portion; and
a tail portion connected to an opposing second end of the core portion.

2. The liquid crystal display panel of claim 1 , wherein the inorganic silicon-based material comprises at least one of silicon oxide and silicon nitride.

3. The liquid crystal display panel of claim 1 , wherein each of the first and second inorganic layers has a thickness of about 1 nm to about 1000 nm.

4. The liquid crystal display panel of claim 1 , wherein the first display substrate further comprises:
signal lines; and
thin film transistors, each of which is connected to a corresponding one of the signal lines and a corresponding one of the pixel electrodes.

5. The liquid crystal display panel of claim 4 , wherein at least one of the first display substrate and second display substrate further comprises spacers configured to maintain a cell gap between the first display substrate and the second display substrate.

6. The liquid crystal display panel of claim 5 , wherein the spacers are disposed on the first base substrate, and the first inorganic layer covers the spacers.

7. The liquid crystal display panel of claim 5 , wherein each of the spacers overlaps with a corresponding one of the thin film transistors.

8. The liquid crystal display panel of claim 1 , wherein each of the first display substrate and the second display substrate further comprises a reactive mesogen bonded to the first inorganic layer and second inorganic layer.

9. The liquid crystal display panel of claim 1 , wherein:
the core portion comprises biphenyl, benzene, or cyclohexane;
the polarity portion comprises a hydroxyl group or an amino group; and
the tail portion comprises alkyl groups connected to each other one after another.

Assignees

• Samsung Display Co Ltd

Inventors

• Park Heungshik
• Bae Jihong
• Kim Sujin
• Shin Kichul
• Yoon Jooyoung
• Lee Hyeokjin
• Choi Suk

Classifications

• G02F1/13378

  by treatment of the surface, e.g. embossing, rubbing or light irradiation (G02F1/133711, G02F1/133734, G02F1/133753 take precedence) · CPC title

• G02F1/1337 Primary

  Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers · CPC title

• G02F2001/133742

  Physics · mapped topic

• G02F1/133742

  for homeotropic alignment · CPC title