Flat Screen Device with Transparent Protection Housing

• US 20100302473A1
• Filed: 08/26/2008
• Published: 12/02/2010
• Est. Priority Date: 08/31/2007
• Status: Active Grant

• Current Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Original Assignee: Thales SA
• Inventors: Poveda, Stephane, Laret, Daniel, Laluque, Laurent
• Granted Patent: US 8,462,290 B2
• Time in Patent Office: Days
• US Class Current: 349/58
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/133311 Environmental protection, e.g. against dust or humidity
• CPC Class Codes: G02F 1/133331 Cover glasses
• CPC Class Codes: G02F 1/133334 Electromagnetic shields
• CPC Class Codes: G02F 2201/503 Arrangements improving the resistance to shock
• CPC Class Codes: G02F 2201/54 Arrangements for reducing warping-twist
• CPC Class Codes: G02F 2202/28 Adhesive materials or arrangements

Abstract

The display device comprises a display screen comprising a bonding surface and a mechanical structure. The display device also comprises a glass protective casing consisting of two sheets of glass and inserts. This protective casing is bonded to the structure beneath the second sheet of glass. The screen is bonded to the inside of the protective casing on only one of the two sheets.

The invention proposes a compact protective device for a flat screen which is applied essentially to liquid crystal matrix screens comprising light-emitting diode light. The preferred field of application is that of screens used for aviation.

Claims

1. A display device comprising a display screen comprising a bonding surface and a mechanical structure, wherein the display device also comprises:

a first sheet of glass situated between the observer and the screen,

a second sheet of glass, both sheets being flat and parallel with one another, the rear face of each sheet defined as being the side of the light source of the device,

and inserts placed between the first and the second sheet of glass;

the assembly of the first sheet of glass, the second sheet of glass and the inserts forming a protective casing;

the thickness of the casing obtained being greater than the thickness of the screen;

the screen being bonded on the whole of its surface to only one of the two sheets over the central portion of the face inside the casing.

2. The display device as claimed in claim 1, wherein the periphery of the rear face of the second sheet of the casing is bonded with a layer of adhesive to the inside of the rigid mechanical structure.

3. The display device as claimed in claim 2, wherein the second sheet of protective glass of the casing is also a heater consisting of a glass substrate.

4. The display device as claimed in claim 1, wherein the first sheet of protective glass of the casing comprises an electromagnetic shield for the screen.

5. The display device as claimed in claim 2, wherein the screen is fixed by a layer of adhesive to the inside of the casing on the rear face of the first sheet of protective glass.

6. The display device as claimed in claim 2, wherein the screen is fixed by a layer of adhesive to the inside of the casing on the front face of the second sheet of protective glass.

7. The display device as claimed in claim 5 or 6, wherein the mechanical structure comprises a bottom and the display device at least one post providing the connection between the casing and the bottom.

8. The display device as claimed in claim 7, wherein the post is transparent.

9. The display device as claimed in claim 2, wherein the screen is a liquid crystal matrix and the display device comprises at least one light source placed between the bottom and the screen.