Liquid crystal display panel and method for manufacturing the same

• US 20050280765A1
• Filed: 06/20/2005
• Published: 12/22/2005
• Est. Priority Date: 06/18/2004
• Status: Active Grant

• Current Assignee: InnoLux Corporation
• Original Assignee: Innolux Display Corporation (InnoLux Corporation)
• Inventors: Hsiao, Kun-Hsing, Wu, Jia-Yi, Liu, Yun-Szu
• Granted Patent: US 7,443,481 B2
• Time in Patent Office: Days
• US Class Current: 349/153
• CPC Class Codes: G02F 1/1341 Filling or closing of cells

Abstract

A liquid crystal display panel (1) includes an upper substrate (300) and a lower substrate (100) opposite to each other, a liquid crystal layer (200) interposed between the upper and lower substrates. A plate sealing adhesive (400) is applied to an interface between the upper plate and the lower plate, and encircling the liquid crystal layer. The plate sealing adhesive defines an opening (403) therein; and an electrically conductive adhesive (500) is applied in the opening. A method for manufacturing the liquid crystal display panel is also disclosed. The plate sealing adhesive can be evenly distributed.

Claims

1. A liquid crystal display panel, comprising:

an upper plate and a lower plate;

a liquid crystal layer interposed between the upper plate and the lower plate;

a plate sealing adhesive applied to an interface between the upper plate and the lower plate, and encircling the liquid crystal layer, the plate sealing adhesive defining an opening therein; and

an electrically conductive adhesive applied in the opening.

2. The liquid crystal display panel as recited in claim 1, wherein the plate sealing adhesive comprises an ultraviolet curing adhesive.

3. The liquid crystal display panel as recited in claim 2, wherein the ultraviolet curing adhesive is an acrylic resin.

4. The liquid crystal display panel as recited in claim 1, wherein the plate sealing adhesive is made of a heat curing adhesive.

5. The liquid crystal display panel as recited in claim 4, wherein the heat curing adhesive is an epoxy resin.

6. The liquid crystal display panel as recited in claim 1, wherein the plate sealing adhesive comprises a mixture of an ultraviolet curing adhesive and a heat curing adhesive.

7. The liquid crystal display panel as recited in claim 1, wherein the plate sealing adhesive comprises a plurality of reinforcement members.

8. The liquid crystal display panel as recited in claim 7, wherein the reinforcement members comprises a plurality of glass fibers.

9. The liquid crystal display panel as recited in claim 1, wherein the electrically conductive adhesive comprises a plurality of gold particles.

10. The liquid crystal display panel as recited in claim 1, wherein the electrically conductive adhesive comprises an ultraviolet curing adhesive.

11. The liquid crystal display panel as recited in claim 10, wherein the ultraviolet curing adhesive is an acrylic resin.

12. The liquid crystal display panel as recited in claim 1, wherein the electrically conductive adhesive comprises a heat curing adhesive.

13. The liquid crystal display panel as recited in claim 12, wherein the heat curing adhesive is an epoxy resin.

14. The liquid crystal display panel as recited in claim 1, wherein the electrically conductive adhesive comprises a combination of an ultraviolet curing adhesive and a heat curing adhesive.

15. The liquid crystal display panel as recited in claim 1, wherein the electrically conductive adhesive is arranged at a corner of the lower plate.

16. The liquid crystal display panel as recited in claim 1, wherein the electrically conductive adhesive is arranged around an edge of the lower plate.

17. A method for manufacturing a liquid crystal display panel, comprising:

providing an upper plate and a lower plate;

applying a plate sealing adhesive on the lower plate, the applied plate sealing adhesive defining an opening;

applying an electrically conductive adhesive on the lower plate, with at least a portion of the electrically conductive adhesive being applied to the opening so as to fill the opening;

attaching the upper plate to the lower plate; and

curing the plate sealing adhesive.

18. The method as recited in claim 17, wherein the plate sealing adhesive is arranged along edge portions of the lower plate.

19. The method as recited in claim 17, wherein the plate sealing adhesive is cured by an ultraviolet curing process.

20. The method as recited in claim 17, wherein the plate sealing adhesive is cured by a heat curing process.

21. A liquid crystal display panel, comprising:

an upper plate and a lower plate;

a liquid crystal layer interposed between the upper plate and the lower plate;

a plate sealing adhesive applied to an interface between the upper plate and the lower plate, and encircling the liquid crystal layer, the plate sealing adhesive essentially extending continuously along a periphery of the liquid crystal display panel while defining a gap therein; and

an electrically conductive adhesive filling the gap and joining the upper plate and the lower plate to isolate the interior liquid crystal layer from an exterior.