Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1995-10-02
1997-02-25
Powell, Mark R.
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
359214, 361699, 361701, 361718, 349161, H05K 720, G02F 1133
Patent
active
056063415
ABSTRACT:
In a laptop computer, CPU-generated heat is thermally conducted passively to a radiator-like element disposed behind the LCD, which uses the heat to warm the LCD. The CPU is surrounded by a liquid-tight housing containing a biphase coolant. A first tube in fluid communication with an outlet port in the housing conveys heat-vaporized coolant to an input port on the radiator. The coolant flows through a plurality of columns formed in the radiator-like element, transferring heat and condensing in the process. The transferred heat is radiated to the LCD, which is desirably warmed in the process. The condensed coolant is conducted from an export port in the radiator-like element through a second tube to an input port in the housing. A pressure sensor may be included to provide a coolant pressure drop signal that can be used to shutdown the CPU in the event of a coolant leak.
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Kaufman Michael A.
NCR Corporation
Powell Mark R.
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