US5784256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable computer having a circuit board including a heat-generating IC chip and a metal frame supporting the circuit board
Assignee: Toshiba Corp
•
Filing: 1996-12-03
•
Granted: 1998-07-21
•
Expires: 2016-12-03
Abstract
Abstract A portable electronic apparatus comprising a housing having a bottom, a metal frame provided in the housing, a circuit board supported by the frame, and an IC chip secured to the circuit board. The circuit board has a first surface extending substantially parallel to the bottom of the housing and a second surface opposing the first surface. The IC chip is adhered to the first surface of the circuit board and generating heat while operating. The apparatus further comprises a metal cover arranged on the first surface of the circuit board and covering the IC chip, and a metal shield plate covering the first surface of the circuit board and the metal cover. The frame has a heat-receiving part which contacts the second surface of the circuit board and which is located near the IC chip. A first thermally conductive elastic sheet is interposed between the cover and the IC chip, and a second thermally conductive elastic sheet is interposed between the cover and the shield plate.
Inventors
- 👤 Hiroshi Nakamura
- 👤 Yuji Nakajima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:22
CPC Classifications
G; G06; G06F; G06F1/00; G06F1/16; G06F1/1613; G06F1/1633; G06F1/1675; G06F1/1683; G06F1/1615; G06F1/1616; G06F1/1635; G06F1/1637; G06F1/1647; G06F1/165; G06F1/1656; G06F1/20; G06F1/203; H; H05; H05K; H05K1/00; H05K1/02; H05K1/0201; H05K1/0203; H05K1/0204; H10; H10W; H10W40/00; H10W40/60; H10W40/611; H10W42/00; H05K2201/00; H05K2201/09; H05K2201/09009; H05K2201/09054; H05K2201/10; H05K2201/10227; H05K2201/10409; H05K2201/10416; H05K2201/10613; H05K2201/10621; H05K2201/10681; H05K2201/20; H05K2201/2036; H05K2203/00; H05K2203/15; H05K2203/1572; H10W40/20; H10W40/231; H10W40/233; H10W40/235; H10W40/237; H10W40/242; H10W72/00; H10W72/851; H10W72/874; H10W72/877; H10W90/00; H10W90/701; H10W90/721; H10W90/724; H10W90/731; H10W90/736
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
91 words
A portable computer comprising: a portable computer body containing a metal frame, data-inputting means and means for processing data received by said data-inputting means; a circuit board supported by said metal frame; an IC chip mounted on said circuit board and generating heat while operating said metal frame having a heat-receiving part receiving heat generated by said IC chip; and a heat pipe supported by said metal frame and thermally connected to said heat-receiving part of said metal frame, for dissipating heat transmitted from said IC chip to said heat-receiving part.
Claim 2
Dependent Claim
91 words
A portable computer comprising: a portable computer body containing a metal frame, data-inputting means and means for processing data received by said data-inputting means; a circuit board supported by said metal frame; an IC chip mounted on said circuit board and generating heat while operating said metal frame having a heat-receiving part receiving heat generated by said IC chip; and a heat pipe supported by said metal frame and thermally connected to said heat-receiving part of said metal frame, for dissipating heat transmitted from said IC chip to said heat-receiving part.
Claim 3
Dependent Claim
43 words
The portable computer according to claim 1, wherein said metal frame has a heat-radiating part located remote from said heat-receiving part, and said heat pipe has a first end and a second end coupled to said heat-receiving part and said heat-radiating part, respectively.
Claim 4
Dependent Claim
20 words
The portable computer according to claim 2, wherein the heat-radiating part of said metal frame has a number of fins.
Claim 5
Dependent Claim
40 words
The portable computer according to claim 1, wherein said circuit board has a first surface and a second surface facing away from the first surface and facing said heat-receiving part, and said IC chip is mounted on said first surface.
Claim 6
Dependent Claim
54 words
The portable computer according to claim 4, wherein said circuit board has a number of through holes in that part on which said IC chip is mounted, and each of said through holes has a first end and a second end which open to the first and second surfaces of said circuit board, respectively.
Claim 7
Dependent Claim
22 words
The portable computer according to claim 1, further comprising a metal cover supported by said circuit board and covering said IC chip.
Claim 8
Dependent Claim
31 words
The portable computer according to claim 5, further comprising a thermally conductive soft member interposed between the second surface of said circuit board and the heat-receiving part of said metal frame.
Claim 9
Dependent Claim
47 words
The portable computer according to claim 5, wherein said IC chip has a number of leads, a number of pads are provided on the first surface of said circuit board and connected to said leads, and a chip cover covers junctions between said leads and said pads.
Claim 10
Dependent Claim
23 words
The portable computer according to claim 1, wherein said body has a housing supported by said metal frame and covering said metal frame.
Claim 11
Dependent Claim
118 words
A portable computer comprising: a body containing a metal frame, data-inputting means and means for processing data received by said data-inputting means; a circuit board supported by said metal frame and having a first surface and a second surface facing away from the first surface; and an IC chip mounted on the first surface of said circuit board and generating heat while operating, wherein said metal frame has a heat-receiving part contacting the second surface of said circuit board, for receiving heat from said IC chip through said circuit board, and a heat pipe supported by said metal frame, and said heat pipe is designed to dissipate heat transmitted from said IC chip to said heat receiving part.
Claim 12
Dependent Claim
118 words
A portable computer comprising: a body containing a metal frame, data-inputting means and means for processing data received by said data-inputting means; a circuit board supported by said metal frame and having a first surface and a second surface facing away from the first surface; and an IC chip mounted on the first surface of said circuit board and generating heat while operating, wherein said metal frame has a heat-receiving part contacting the second surface of said circuit board, for receiving heat from said IC chip through said circuit board, and a heat pipe supported by said metal frame, and said heat pipe is designed to dissipate heat transmitted from said IC chip to said heat receiving part.
Claim 13
Dependent Claim
43 words
The portable computer according to claim 10, wherein said metal frame has a heat-radiating part located remote from said heat-receiving part, and said heat pipe has a first end and a second end coupled to said heat-receiving part and said heat-radiating part, respectively.
Claim 14
Dependent Claim
23 words
The portable computer according to claim 10, wherein said body has a housing supported by said metal frame and covering said metal frame.
Claim 15
Dependent Claim
96 words
A portable computer comprising: a housing having an upper surface; a keyboard mounted on the upper surface of said housing; a metal frame fixed in place within said housing; a circuit board supported by said metal frame; an IC chip mounted on said circuit board and generating heat while operating, said metal frame having a heat-receiving part receiving heat generated by said IC chip; and a heat pipe supported by said metal frame and thermally connected to said heat-receiving part of said metal frame, for dissipating heat transmitted from said IC chip to said heat-receiving part.
Claim 16
Dependent Claim
96 words
A portable computer comprising: a housing having an upper surface; a keyboard mounted on the upper surface of said housing; a metal frame fixed in place within said housing; a circuit board supported by said metal frame; an IC chip mounted on said circuit board and generating heat while operating, said metal frame having a heat-receiving part receiving heat generated by said IC chip; and a heat pipe supported by said metal frame and thermally connected to said heat-receiving part of said metal frame, for dissipating heat transmitted from said IC chip to said heat-receiving part.
Claim 17
Dependent Claim
43 words
The portable computer according to claim 13, wherein said metal frame has a heat-radiating part located remote from said heat-receiving part, and said heat pipe has a first end and a second end coupled to said heat-receiving part and said heat-radiating part, respectively.
Claim 18
Dependent Claim
20 words
The portable computer according to claim 14, wherein the heat-radiating part of said metal frame has a number of fins.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-07-20 | 2002-01-19 | 2002-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-07-20 | 2006-01-19 | 2006-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-07-20 | 2010-01-19 | 2010-07-21 | $7700.00 | Window Closed / Lapsed |