Liquid crystal display and display

• US 8,558,965 B2
• Filed: 04/13/2012
• Issued: 10/15/2013
• Est. Priority Date: 12/26/2005
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Corporation of America (Panasonic Holdings Corporation)
• Original Assignee: Hitachi Displays Limited (Japan Display Incorporated), Panasonic Liquid Crystal Display Company Limited (Panasonic Holdings Corporation)
• Inventors: Fukuda, Koichi
• Primary Examiner(s): Vu, Phu
• Application Number:
  US13/446,331
• Publication Number:
  US 20120194769A1
• Time in Patent Office: 550 Days
• Field of Search: 349 58- 60
• US Class Current: 349/60
• CPC Class Codes: G02F 1/1333 Constructional arrangements; Manufacturing methodsG02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/133528 Polarisers
• CPC Class Codes: G02F 1/1339 Gaskets; Spacers; Sealing of cells
• CPC Class Codes: G02F 2201/50 Protective arrangements

Abstract

A hand-held electronic device includes a liquid crystal display device having a first substrate, a second substrate bonded to the first substrate, with liquid crystal material held between the first substrate and the second substrate, and an upper polarizing plate affixed to the second substrate. A protective member is disposed over the upper polarizing plate, and an adhesive member is disposed between the protective member and the upper polarizing plate without an air layer between the protective member and the upper polarizing plate. The protective member is configured as a protective cover of the hand-held electronic device.

Claims

1. A hand-held electronic device comprising:

a liquid crystal display device comprising a first substrate, a second substrate bonded to the first substrate, liquid crystal material held between the first substrate and the second substrate, and an upper polarizing plate affixed to the second substrate;

a protective member disposed over the upper polarizing plate; and

an adhesive member disposed between the protective member and the upper polarizing plate and without an air layer between the protective member and the upper polarizing plate;

wherein the protective member is configured as a protective cover of the hand-held electronic device; and

wherein a thickness of the protective member is 0.2 mm to 1.0 mm.

2. A hand-held electronic device according to claim 1, wherein a surface pencil hardness of the protective member is at least 3H.

3. A hand-held electronic device according to claim 1, wherein an upper surface of the second substrate is bonded to a sheath of the hand-held electronic device.

4. A hand-held electronic device according to claim 1, wherein an upper surface of the upper polarizing plate is bonded to a sheath of the hand-held electronic device.

5. A hand-held electronic device according to claim 1, wherein a thickness of the second substrate is no greater than 0.5 mm.

6. A hand-held electronic device according to claim 3, wherein a surface pencil hardness of the protective member is 3H or harder.

7. A hand-held electronic device according to claim 2, wherein an upper surface of the second substrate is bonded to a sheath of the hand-held electronic device.

8. A hand-held electronic device according to claim 6, wherein an upper surface of the upper polarizing plate is bonded to a sheath of the hand-held electronic device.

12. A hand-held electronic device according to claim 1, wherein no air layer is present between the protective member and a display area of the liquid crystal display device.

14. A hand-held electronic device according to claim 2, wherein the protective member is a resin member.

9. A hand-held electronic device comprising:

a liquid crystal display device comprising a TFT substrate;

a counter substrate bounded to the TFT substrate, and a polarizing plate disposed over the counter substrate;

a protective member disposed over the polarizing plate; and

an adhesive member disposed between the protective member and the polarizing plate and without an air layer between the protective member and the polarizing plate;

wherein the protective member is configured as a protective cover of the hand-held electronic device; and

wherein a thickness of the protective member is 0.2 mm to 1 mm.

10. A hand-held electronic device according to claim 9, wherein a thickness of the counter substrate is no greater than 0.5 mm.

11. A hand-held electronic device according to claim 9, wherein a surface pencil hardness of the protective member is 3H or harder.

13. A hand-held electronic device according to claim 9, wherein no air layer is present between the protective member and a display area of the liquid crystal display device.

15. A hand-held electronic device according to claim 11, wherein the protective member is a resin member.