Non-ruggedized COTS display packaging for severe environment applications

• US 20050285990A1
• Filed: 06/25/2004
• Published: 12/29/2005
• Est. Priority Date: 06/25/2004
• Status: Active Grant

• Current Assignee: Northrop Grumman Systems Corporation (Northrop Grumman Corporation)
• Original Assignee: Litton Systems Incorporated (Northrop Grumman Corporation)
• Inventors: Saxena, Ragini, Loo, Thomas, Havelka, Steven E., Bong, Ban S., Scappaticci, Albert V.
• Granted Patent: US 7,173,678 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 2201/503 Arrangements improving the resistance to shock
• CPC Class Codes: G04G 9/0041 Illumination devices
• CPC Class Codes: G06F 1/1601 Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays constructional details related to flat displays integrated in a portable computer, e.g. laptop, handheld computer G06F1/1637; constructional details related to television receivers H04N5/64
• CPC Class Codes: G09F 9/30 in which the desired character or characters are formed by combining individual elements panels comprising a number of electrodes in a single cell controlling light arriving from an independent light source, e.g. electro-optical or magneto-optical cell, G02F1/00

Abstract

A modular display assembly comprising a light emitting or transmitting display panel and a glass panel wherein: the display and glass panel are separated from each other by a frame assembly; and the display is coupled to the frame assembly by at least one elastic isolator.

Claims

1. A modular display assembly comprising a light emitting or transmitting display subassembly and a glass panel wherein:

the display subassembly comprises a light emitting display or a combination of a transmitting display and a backlight;

the display subassembly and glass panel are separated from or held in contact with each other by a frame assembly; and

the display subassembly is coupled to the frame assembly by at least one elastic isolator.

2. The assembly of claim 1 wherein the at least one elastic isolator has a thermal conductivity, thickness, and cross sectional area in contact with the frame assembly sufficient to conduct any heat generated by the display to the frame assembly such that the display stays within operational temperature limits.

3. The assembly of claim 2 wherein the display is a commercial off the shelf flat form and/or panel display.

4. The assembly of claim 3 wherein the glass panel and frame are coupled together via mating beveled edges, flexible bonding material, angle clamps, or captivating grooves.

5. The assembly of claim 4 wherein the frame assembly comprises a plate/chassis and a frame, and the display is coupled to the frame via the plate, and the frame is coupled to the glass panel.

6. The display assembly of claim 5 wherein the plate, frame and glass panel form are all conductive and form a Faraday cage around the display.

7. The assembly of claim 6 wherein the display is positioned relative to the glass panel by the frame.

8. The display assembly of claim 6 wherein the display subassembly is fastened to the plate via the at least one plastic isolator.

9. The display assembly of claim 6 wherein the display subassembly is fastened to the frame via the at least one plastic isolator.

10. The display assembly of claim 6 wherein one or more circuit boards comprising control circuits for the display are coupled to the plate/chassis on a side opposite the display subassembly.

11. The display assembly of claim 10 wherein the assembly has a thickness of 1 inch.

12. The display assembly of claim 1 wherein the assembly has a packaging density of 0.02 lbs per cubic inch.

13. The display assembly of claim 1 wherein the assembly is able to withstand continuous operating and storage temperatures from −

55 C to 100 C per MIL-STD-810 and sustained 3-axis shock and vibration up to 40 g'"'"'s per MIL-STD-810.

14. A modular display assembly comprising a light emitting or transmitting display subassembly and a glass panel formed by:

obtaining COTS flat form and/or panel display;

placing the display in a sub-frame, and, for light transmitting technologies, using the sub-frame to couple the display to a diffuser and backlight assembly;

coupling the framed display to a plate/chassis via one or more elastic isolators;

enclosing the framed display in a fully conductive outer housing comprising a metal rear plate/chassis, conductively coated cover glass, and a conductively coated or metal frame/bezel; and

coupling control circuits as to the plate/chassis and enclosing them via one or more conductively coated or metal covers.

15. The display assembly of claim 14 wherein the assembly is able to withstand continuous operating and storage temperatures from −

55 C to 100 C per MIL-STD-810 and sustained 3-axis shock and vibration up to 40 g'"'"'s per MIL-STD-810.

16. A method of forming a modular display comprising a light emitting or transmitting display subassembly and a glass panel, the method comprising:

obtaining COTS flat form and/or panel display;

placing the display in a sub-frame, and, for light transmitting technologies, using the sub-frame to couple the display to a diffuser and backlight assembly;

coupling the framed display to a plate/chassis via one or more elastic isolators;

enclosing the framed display in a fully conductive outer housing comprising a metal rear plate/chassis, conductively coated cover glass, and a conductively coated or metal frame/bezel; and

coupling control circuits as to the plate/chassis and enclosing them via one or more conductively coated or metal covers.

17. The method of claim 16 wherein coupling the framed display to a plate/chassis via one or more elastic isolators comprises selecting and arranging the one or more isolators to have a thermal conductivity, thickness, and cross sectional area in contact with the framed display sufficient to conduct any heat generated by the display to the rear plate/chassis such that the display stays within operational temperature limits.

18. The method of claim 17 comprising mounting the display in a vehicle.

19. The method of claim 18 wherein the display, when coupled to the vehicle, is able to withstand continuous operating and storage temperatures from −

55 C to 100 C per MIL-STD-810 and sustained 3-axis shock and vibration up to 40 g'"'"'s per MIL-STD-810.