Liquid crystal cell panel including substrates having corner patterns

Patent metadata

Field	Value
Publication number	US-9954008-B2
Application number	US-201615006259-A
Country	US
Kind code	B2
Filing date	Jan 26, 2016
Priority date	Mar 13, 2015
Publication date	Apr 24, 2018
Grant date	Apr 24, 2018

Abstract

A liquid crystal cell panel includes a first substrate from which is formed a thin film transistor array substrate, the first substrate including a plurality of unit cells and test terminals which respectively correspond to the unit cells, and a second substrate which faces the first substrate and from which is formed a color filter substrate. The first substrate further includes a first cutting pattern at each of a plurality of corners thereof, and the second substrate includes a second cutting pattern at each of a plurality of corners thereof, the second cutting patterns corresponding one-to-one with the first cutting patterns. Corresponding first and second cutting patterns cross each other in a plan view, and the crossing first and second cutting patterns expose a test terminal adjacent to the crossing first and second cutting patterns to outside the liquid crystal cell panel.

First claim

What is claimed is:

1. A liquid crystal cell panel, comprising:
a first substrate from which is formed a thin film transistor array substrate, the first substrate comprising:
a plurality of unit cells in which a pixel region is defined;
test terminals which respectively correspond to the unit cells; and
a first cutting pattern at each of a plurality of corners of the first substrate, the test terminals respectively adjacent to the first cutting patterns; and

a second substrate which faces the first substrate and from which is formed a color filter substrate, the second substrate comprising a second cutting pattern at each of a plurality of corners thereof, the second cutting patterns in one-to-one correspondence with the first cutting patterns of the first substrate,
wherein
corresponding first and second cutting patterns cross each other in a plan view, and
the crossing first and second cutting patterns expose a test terminal adjacent to the crossing first and second cutting patterns to outside the liquid crystal cell panel.

2. The liquid crystal cell panel of claim 1 , wherein the first and second substrates have a substantially same polygonal shape respectively defined by the cutting patterns thereof and remaining sides thereof.

3. The liquid crystal cell panel of claim 2 , wherein each of the first and second substrates have an octagonal shape.

4. The liquid crystal cell panel of claim 2 , wherein the facing first and second substrates have a vertically or laterally symmetrical relationship with each other in a plane.

5. The liquid crystal cell panel of claim 4 , wherein
the vertically symmetrical relationship is a relationship in which when the first substrate is vertically inverted in the plane, the first substrate corresponds to the second substrate, and
the laterally symmetrical relationship is a relationship in which when the first substrate is laterally inverted in the plane, the first substrate corresponds to the second substrate.

6. The liquid crystal cell panel of claim 2 , wherein an angle formed by the crossing first and second cutting patterns is an obtuse angle.

7. The liquid crystal cell panel of claim 1 , wherein
the first substrate further comprises a pixel electrode, and
the second substrate further comprises a common electrode.

8. The liquid crystal cell panel of claim 7 , wherein each of the plurality of unit cells comprises:
a plurality of gate lines,
a plurality of data lines, and
a plurality of thin film transistors.

9. The liquid crystal cell panel of claim 8 , wherein the test terminal comprises:
a gate line terminal connected to the plurality of gate lines,
a data line terminal connected to the data lines, and
a common voltage terminal connected to the common electrode.

10. The liquid crystal cell panel of claim 1 , further comprising a liquid crystal layer between the first substrate facing the second substrate.

11. The liquid crystal cell panel of claim 10 , wherein the liquid crystal layer is a liquid crystal material layer of one of the first and second substrates in a non-facing state with the other one of the first and second substrates.

12. A method of manufacturing a liquid crystal cell panel, comprising:
forming an alignment film on a first substrate from which a thin film transistor array substrate is formed or a second substrate from which a color filter substrate is formed,
the first substrate comprising:
a plurality of unit cells in which a pixel region is defined;
a first cutting pattern at each of a plurality of corners thereof, and
test terminals respectively corresponding to the first cutting patterns, the test terminals respectively connected to the unit cells,

the second substrate comprising:
a second cutting pattern at each of a plurality of corners thereof, the second cutting patterns corresponding one-to-one with the first cutting patterns;

forming a seal pattern and a spacer on the first substrate or the second substrate which includes the alignment film thereon;
dropping liquid crystal material on the first substrate or the second substrate which includes the seal pattern thereon;
assembling the substrate including the liquid crystal dropped thereon among the first and second substrates with the remaining substrate among the first and second substrates to form the liquid crystal cell panel in which corresponding first and second cutting patterns to cross each other in a plan view to expose a test terminal adjacent thereto; and
testing the liquid crystal cell panel for defects through the exposed test terminal which is adjacent to the crossing first and second cutting patterns.

13. The method of claim 12 , wherein the first and second substrates have a substantially same polygonal shape respectively defined by the cutting patterns thereof and remaining sides thereof.

14. The method of claim 13 , wherein each of the first and second substrates have an octagonal shape.

15. The method of claim 13 , wherein the first and second substrates assembled with each other have a vertically or laterally symmetrical relationship with each other in a plane.

16. The method of claim 15 , wherein
the vertically symmetrical relationship is a relationship in which when the first substrate is vertically inverted in the plane, the first substrate corresponds to the second substrate, and
the laterally symmetrical relationship is a relationship in which when the first substrate is laterally inverted in the plane, the first substrate corresponds to the second substrate.

17. The method of claim 15 , wherein an angle formed by the crossing first and second cutting patterns is an obtuse angle.

18. The method of claim 12 , wherein the testing the liquid crystal cell panel for defects comprises an on/off inspection apparatus applying a direct current voltage to the exposed test terminal which is adjacent to the crossing first and second cutting patterns.

19. The method of claim 12 , wherein the testing the liquid crystal cell panel for defects is performed before separating the unit cells of liquid crystal cell panel from each other to respectively form display cells from the separated unit cells.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Jun-Hee
• Kim Eoksu
• Kim Wonjin
• Park Juyong
• WOO Jungchul
• Lee Hyunwook

Classifications

• G02F2001/136254

  Physics · mapped topic

• G02F1/1309 Primary

  Repairing; Testing · CPC title

• G02F2001/13415

  Physics · mapped topic

• G02F2201/56

  Substrates having a particular shape, e.g. non-rectangular · CPC title

• G02F1/1341

  Filling or closing of cells · CPC title