Display panel including receiving portion in sealing member and fabrication method thereof

Patent metadata

Field	Value
Publication number	US-10048544-B2
Application number	US-201514983794-A
Country	US
Kind code	B2
Filing date	Dec 30, 2015
Priority date	May 18, 2015
Publication date	Aug 14, 2018
Grant date	Aug 14, 2018

Abstract

A display panel includes a first display substrate including a display area and a non-display area which is at a periphery of the display area, a second display substrate facing the first display substrate, a display device in the display area between the first and second display substrates and including a first electrode, an optical layer including an optical layer material, and a second electrode, and a sealing member which is disposed in the non-display area and attaches the first and second display substrates to each other. The sealing member defines a sealing portion thereof which restricts movement of the display area optical layer material to outside the display area, and a receiving portion thereof in which the optical layer material is receivable.

First claim

What is claimed is:

1. A display panel comprising:
a first display substrate including a display area and a non-display area which is at a periphery of the display area;
a second display substrate facing the first display substrate;
a display device disposed in the display area between the first display substrate and the second display substrate, the display device including a first electrode, an optical layer including an optical layer material, and a second electrode; and
a sealing member which is disposed in the non-display area to border the display area and attaches the first display substrate and the second display substrate to each other,
wherein the sealing member comprises:
a sealing portion which prevents the optical layer material of the optical layer from moving outside the display area; and
a plurality of receiving portions disconnected from each other and defining closed spaces in the sealing portion.

2. The display panel as claimed in claim 1 , wherein for a reference volume of the optical layer material defined for the display area, an entirety of the receiving portions receives an amount of the optical layer material in a range of about 2 volume percent to about 10 volume percent with respect to the reference volume.

3. The display panel as claimed in claim 2 , wherein the sealing member defines two to ten of the receiving portions.

4. The display panel as claimed in claim 3 , wherein each of the receiving portions receives the optical layer material in an amount of about 1 volume percent of the reference volume of the optical layer material defined for the display area.

5. The display panel as claimed in claim 1 , wherein the sealing member includes a photo curable material or a thermo curable material.

6. The display panel as claimed in claim 1 , wherein the optical layer comprises a plurality of liquid crystals.

7. The display panel as claimed in claim 6 , wherein the first electrode is disposed in the first display substrate and the second electrode is disposed in the second display substrate.

8. The display panel as claimed in claim 1 , wherein a volume of a receiving portion among the plurality of receiving portions is connected to a volume of the display area.

9. A method for manufacturing a display panel comprising:
providing a first display substrate by forming a thin film transistor on a first base substrate, the first display substrate including a display area and a non-display area which is at a periphery of the display area;
forming a first electrode on the first display substrate, the first electrode contacting the thin film transistor in the first display substrate;
forming a second electrode in a second display substrate including a second base substrate;
disposing an optical layer including an optical layer material, in the display area and between the first electrode which is on the first display substrate and the second electrode which is on the second display substrate; and
attaching the first display substrate and the second display substrate to each other using a sealing member in the non-display area and between the first and second display substrates,
wherein the sealing member comprises:
a sealing portion which prevents the optical layer material of the optical layer from moving outside the display area; and
a plurality of receiving portions disconnected from each other and defining closed spaces in the sealing portion.

10. The method as claimed in claim 9 , with respect to a reference volume of the optical layer material defined for the display area,
further comprising:
measuring a volume of the optical layer material in the display area; and
determining whether a volume of the display area optical layer material exceeds the reference volume thereof.

11. The method as claimed in claim 10 , further comprising redistributing the display area optical layer material if the volume of the display area optical layer material exceeds the reference volume thereof.

12. The method as claimed in claim 11 , wherein the redistributing of the display area optical layer material comprises:
connecting a volume of the display area to a volume of a receiving portion among the plurality of receiving portions by removing a portion of the sealing member at the border of the display area, the portion of the sealing member defining the receiving portion, and
moving an amount of the display area optical layer material to the receiving portion of which the volume thereof is connected to the volume of the display area.

13. The method as claimed in claim 9 , wherein with respect to a reference volume of the optical layer material defined for the display area, an entirety of the plurality of receiving portions receives the optical layer material in a range of about 2 volume percent to about 10 volume percent of the reference volume.

14. The method as claimed in claim 13 , wherein the sealing member defines two to ten of the receiving portions.

15. The method as claimed in claim 14 , wherein each of the receiving portions receives the optical layer material in an amount of about 1 volume percent of the reference volume of the optical layer material defined for the display area.

16. The method as claimed in claim 9 , wherein the optical layer comprises a plurality of liquid crystals.

17. The method as claimed in claim 16 , wherein the first electrode is disposed in the first display substrate and the second electrode is in the second display substrate.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Jun Hee
• Kim Eok Su
• Kim Won Jin
• Park Ju Yong
• Woo Jung Chul
• Lee Sun Hee
• Lee Hyun Wook

Classifications

• G02F1/1341

  Filling or closing of cells · CPC title

• G02F1/1339 Primary

  Gaskets; Spacers; Sealing of cells · CPC title

• G02F1/0107

  Gaskets, spacers or sealing of cells; Filling and closing of cells · CPC title

• G02F1/161

  Gaskets; Spacers; Sealing of cells; Filling or closing of cells · CPC title