Non-ruggedized COTS display packaging for severe environment applications

• US 7,173,678 B2
• Filed: 06/25/2004
• Issued: 02/06/2007
• Est. Priority Date: 06/25/2004
• Status: Expired due to Fees

• Current Assignee: Northrop Grumman Systems Corporation (Northrop Grumman Corporation)
• Original Assignee: Northrop Grumman Corporation
• Inventors: Saxena, Ragini, Loo, Thomas, Havelka, Steven E., Bong, Ban S., Scappaticci, Albert V.
• Primary Examiner(s): Dudek; James A.
• Application Number:
  US10/877,334
• Publication Number:
  US 20050285990A1
• Time in Patent Office: 956 Days
• Field of Search: 349/58, 349/60
• 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 for enclosing a light emitting or transmitting display subassembly, comprising:

a solid base plate formed out of an electrically and thermally conductive material;

a frame formed out of a material providing impact resistance and thermal and electrical conductivity fixedly attached to the base plate around the periphery, forming a cavity, the frame having an opening;

a glass panel fixedly attached to the frame at the opening for enclosing the cavity; and

an elastic isolator having thermal conductivity fastening the display subassembly to the solid base plate.

2. The assembly of claim 1 wherein the elastic isolator has a thermal conductivity, thickness, and cross-sectional area in contact with the frame and base plate, sufficient to conduct heat generated by the display subassembly to the base plate so that the display stays within operational temperature limits.

3. The assembly of claim 2 wherein the display subassembly is a commercial off the shelf flat display.

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

5. The display assembly of claim 4 wherein the plate, frame and glass panel are all electrically conductive and form a Faraday cage around the display subassembly.

6. The assembly of claim 5 wherein the display subassembly is positioned relative to the glass panel in the frame.

7. The display assembly of claim 5 wherein the display subassembly is fastened to frame via the at least one plastic isolator.

8. The display assembly of claim 5 wherein one or more circuit boards comprising control circuits for the display assembly are coupled to the base plate on a side opposite the side to which the display subassembly is attached.

9. The display assembly of claim 2 wherein the display subassembly 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.