DISPLAY DEVICE AND METHOD FOR PRODUCTION THEREOF

• US 20100277684A1
• Filed: 07/10/2008
• Published: 11/04/2010
• Est. Priority Date: 10/22/2007
• Status: Abandoned Application

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Fukushima, Hiroshi, Takatani, Tomoo
• Application Number:
  US12/681,949
• Publication Number:
  US 20100277684A1
• Time in Patent Office: Days
• US Class Current: 349/158
• CPC Class Codes: G02F 1/133331 Cover glasses
• CPC Class Codes: G02F 2202/28 Adhesive materials or arrangements
• CPC Class Codes: H10K 50/8426 Peripheral sealing arrangements, e.g. adhesives, sealants
• CPC Class Codes: H10K 59/8722 Peripheral sealing arrangements, e.g. adhesives, sealants

Abstract

The present invention provides a display device in which the adhesive for bonding the display panel and the substrate to each other is prevented from remaining as an uncured portion, and a method for production thereof. The present invention provides: a display device comprising a display panel, a substrate disposed on a display side, and an adhesive layer via which the display panel and the substrate are bonded to each other, wherein the adhesive layer contains a cationically polymerized resin; and the method for production thereof. The adhesive layer more preferably has a refractive index corresponding to that of a member adjacent to the adhesive layer.

Claims

1. A display device, comprising:

a display panel;

a substrate disposed on a display side; and

an adhesive layer via which the display panel and the substrate are bonded to each other,

wherein the adhesive layer contains a cationically polymerized resin.

2. The display device according to claim 1,

wherein the adhesive layer is colorless and transparent.

3. The display device according to claim 1,

wherein the adhesive layer has a refractive index corresponding to a refractive index of a member adjacent to the adhesive layer.

4. The display device according to claim 1,

wherein the adhesive layer further contains a radically polymerized resin.

5. The display device according to claim 1,

wherein the cationically polymerized resin is formed by thermal curing.

6. The display device according to claim 1,

wherein the substrate has a light shielding portion at an area to which the adhesive layer is attached.

7. The display device according to claim 1,

wherein the substrate is a cover substrate.

8. The display device according to claim 1,

wherein the display panel is a liquid crystal display panel or an organic electroluminescent display panel.

9. A method for producing the display device according to claim 1, comprising:

applying an adhesive, which is a material of the adhesive layer, to at least one of the display panel and the substrate;

irradiating light to the adhesive; and

bonding the display panel and the substrate to each other via the light-irradiated adhesive.

10. The method for producing the display device according to claim 9, further comprising

irradiating light to the adhesive again after bonding the display panel and the substrate to each other.

11. The method for producing the display device according to claim 10, comprising:

the first irradiation step of light to the adhesive applied to at least one of the display panel and the substrate;

the bonding step of the display panel and the substrate to each other after the first irradiation step; and

the second irradiation step of light to the adhesive again after the bonding step.

12. The method for producing the display device according to claim 9, further comprising

heating the adhesive after bonding the display panel and the substrate to each other.

13. The method for producing the display device according to claim 12, comprising:

the first irradiation step of light to the adhesive applied to at least one of the display panel and the substrate;

the bonding step of the display panel and the substrate to each other after the first irradiation step; and

the heating step of the adhesive after the bonding step.