Impact-resistant film for flat display panel, and flat display panel

• US 7,005,794 B2
• Filed: 08/25/2004
• Issued: 02/28/2006
• Est. Priority Date: 02/25/2002
• Status: Expired due to Fees

• Current Assignee: Asahi Glass Company, Limited (AGC, Inc.), Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Asahi Glass Company, Limited (AGC, Inc.), Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Wachi, Hiroshi, Watanabe, Hiroshi, Moriwaki, Ken, Miyako, Takeomi, Kumamoto, Shigemi
• Primary Examiner(s): Williams, Joseph
• Assistant Examiner(s): QUARTERMAN, KEVIN J
• Application Number:
  US10/924,777
• Publication Number:
  US 20050077826A1
• Time in Patent Office: 552 Days
• Field of Search: 313/484, 313/485, 313/489, 313/493, 313/582, 428/220, 428/317.7, 428/354, 428/213
• US Class Current: 313/489
• CPC Class Codes: B32B 17/06 comprising glass as the main or only constituent of a layer, next to another layer of a specific material
• CPC Class Codes: B32B 17/10018 comprising only one glass sheet
• CPC Class Codes: B32B 2307/212 Electromagnetic interference shielding
• CPC Class Codes: B32B 2307/412 Transparent
• CPC Class Codes: B32B 2307/56 Damping, energy absorption
• CPC Class Codes: B32B 2369/00 Polycarbonates
• CPC Class Codes: B32B 2457/20 Displays, e.g. liquid crystal displays, plasma displays
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/36 comprising polyesters
• CPC Class Codes: B32B 27/40 comprising polyurethanes
• CPC Class Codes: B32B 7/022 Mechanical properties
• CPC Class Codes: B32B 7/12 using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: C03C 17/3405 with at least two coatings of organic materials C03C17/36, C03C17/42 take precedence
• CPC Class Codes: G02B 1/105 Protective coatings
• CPC Class Codes: G02B 1/11 Anti-reflection coatings
• CPC Class Codes: G02B 1/14 Protective coatings, e.g. hard coatings
• CPC Class Codes: H01J 11/34 Vessels, containers or parts thereof, e.g. substrates
• CPC Class Codes: H01J 5/08 provided with coatings on the walls thereof; Selection of materials for the coatings luminescent coatings H01J1/62

Abstract

An impact-resistance film which is bondable to a front glass of a flat display panel main body that includes a first layer on the front glass side of the flat display panel that is made of a transparent synthetic resin having a shear modulus of from 1×10³ Pa to 1×10⁶ Pa. The film includes a second layer on the viewer'"'"'s side of the first layer that is made of a transparent synthetic resin having a shear modulus of at least 1×10⁸ Pa and includes a third layer on the viewer'"'"'s side of the second layer that is made of a transparent synthetic resin having a shear modulus of at least 1×10⁶ Pa and less than 1×10⁸ Pa.

Claims

1. An impact-resistant film for a flat display panel, which is bondable to a front glass of a flat display panel main body, said film comprising:

a first layer on the front glass side of the flat display panel main body, said first layer made of a transparent synthetic resin having a shear modulus of from 1×

10³ Pa to 1×

10⁶ Pa and having a thickness within a range of from 1 to 4 mm, and

a second layer on a viewer'"'"'s side of the first layer said second layer made of a transparent synthetic resin having a sheer modulus of at least 1×

10⁸ Pa and having a thickness within a range of from 0.05 to 3 mm.

2. The impact-resistant film for a flat display panel according to claim 1, wherein the second layer is laminated on the viewer'"'"'s side surface of the first layer.

3. The impact-resistant film for a flat display panel according to claim 1, wherein the first layer is made of a resin material having an adhesive property, to be directly bonded on the front glass of the flat display panel.

4. The impact-resistant film for a flat display panel according to claim 1, wherein at least one layer selected from the group consisting of an electromagnetic wave shielding layer, a near infrared absorption layer and an antireflection layer, and an adhesive layer bonding such layers, are laminated on the viewer'"'"'s side of the second layer.

5. A flat display panel having the impact-resistant film for a flat display panel as defined in claim 1 bonded on its front glass directly or via a transparent adhesive layer.

6. The impact-resistant film for a flat display panel according to claim 1, wherein the first layer is made of a film.

7. The impact-resistant film for a flat display panel according to claim 1, wherein the total thickness of the first layer and the second layer is from 3 to 7 mm.

8. An impact-resistant film for a flat display panel, which is bondable to a front glass of a flat display panel main body, said film comprising:

a first layer on the front glass side of the flat display panel main body, said first layer made of a transparent synthetic resin having a shear modulus of from 1×

10³ Pa to 1×

10⁶ Pa and having a thickness within a range of from 1 to 4 mm,

a second layer on the viewer'"'"'s side of the first layer, said second layer made of a transparent synthetic resin having a shear modulus of at least 1×

10⁸ Pa, and

a third layer on the viewer'"'"'s side of the second layer, said third layer made of a transparent synthetic resin having a shear modulus of at least 1×

10⁶ Pa and less than 1×

10⁸ Pa.

9. The impact-resistant film for a flat display panel according to claim 8, wherein the thickness of the second layer is within a range of from 0.05 to 3 mm and the thickness of the third layer is within a range of from 0.05 to 2 mm.

10. The impact-resistant film for a flat display panel according to claim 8, wherein the first layer, the second layer and the third layer are laminated sequentially.

11. The impact-resistant film for a flat display panel according to claim 8, wherein the first layer is made of a resin material having an adhesive property, to be directly bonded on the front glass of the flat display panel.

12. The impact-resistant film for a flat display panel according to claim 8, wherein at least one layer selected from the group consisting of an infrared absorption layer, an electromagnetic wave shielding layer and an antireflection layer, and an adhesive layer bonding such layers, are laminated on the viewer'"'"'s side of the third layer.

13. A flat display panel having the impact-resistant film for a flat display panel as defined in claim 8 bonded on its front glass directly or via a transparent adhesive layer.