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US5600383A Expired / Lapsed US ⏱️ 0.0 years remaining

Multi-level deformable mirror device with torsion hinges placed in a layer different from the torsion beam layer

Assignee: Texas Instruments Inc
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Filing: 1995-06-07
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Granted: 1997-02-04
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Expires: 2015-06-07
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Abstract

Abstract A bistable deformable mirror device (DMD) pixel architecture is disclosed, wherein the torsion hinges are placed in a layer different from the torsion beam layer. This results in pixels which can be scaled to smaller dimensions while at the same time maintaining a large fractional active area, an important consideration for bright, high-density displays such as are used in high-definition television applications.

Inventors

  • 👤 Larry J. Hornbeck

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-10 02:03
CPC Classifications
G; G02; G02B; G02B26/00; G02B26/08; H; H04; H04N; H04N9/00; H04N9/12; H04N9/31; H04N9/3141; G02B26/0816; G02B26/0833; G02B26/0841; G09; G09F; G09F9/00; G09F9/30; G09F9/37; G09F9/372; H04N9/3102; Y; Y10; Y10S; Y10S359/00; Y10S359/90

Claims Analysis

Total Claims: 21
Claim 1
Independent Claim 103 words
A spatial light modulation device said device comprising: a base layer; a beam layer; a beam support post; a hinge supported by said base layer and connected to said rotatable layer by said beam support post wherein said hinge allows said rotatable area to move within a defined motion with respect to said base layer, said hinge lying in a plane separate from the plane of said rotatable layer; a hinge gap between said base layer and said hinge allowing for movement of said hinge; and a beam gap between said hinge and said beam layer allowing for movement of said beam layer.
Claim 2
Dependent Claim 103 words
A spatial light modulation device said device comprising: a base layer; a beam layer; a beam support post; a hinge supported by said base layer and connected to said rotatable layer by said beam support post wherein said hinge allows said rotatable area to move within a defined motion with respect to said base layer, said hinge lying in a plane separate from the plane of said rotatable layer; a hinge gap between said base layer and said hinge allowing for movement of said hinge; and a beam gap between said hinge and said beam layer allowing for movement of said beam layer.
Claim 3
Dependent Claim 25 words
The device set forth in claim 1 wherein said base layer includes discrete areas for providing signals for controlling said rotation of said rotatable layer.
Claim 4
Dependent Claim 14 words
The device set forth in claim 2 wherein said discrete areas include address electrodes.
Claim 5
Dependent Claim 15 words
The device set forth in claim 3 wherein said discrete areas further include address circuitry.
Claim 6
Dependent Claim 29 words
The device set forth in claim 2 further including a substrate layer containing control circuitry; and interconnection structure for communicating signals from said control circuitry to said discrete areas.
Claim 7
Dependent Claim 16 words
The device set forth in claim 5 wherein said control circuitry is constructed using CMOS technology.
Claim 8
Dependent Claim 15 words
The device set forth in claim 1, wherein said hinge gap is an air gap.
Claim 9
Dependent Claim 15 words
The device set forth in claim 1, wherein said beam gap is an air gap.
Claim 10
Dependent Claim 134 words
An array of pixels, each pixel individually rotatable into at least two states, said array comprising: a base structure for supporting all of said pixels of said array, said array being maintained in a plane separate from the plane of said base; each said pixel defining a surface area, each said pixel being connected to an end of a beam support post and an intermediate portion which is supported by said base structure and connected to each said pixel through an opposite end of said beam support post, said intermediate portion is separated from said base structure by a hinge gap and from each said pixel by a beam gap and positioned therebetween for connecting said base structure to each said pixel by allowing each said pixel to deform with respect to said base.
Claim 11
Dependent Claim 134 words
An array of pixels, each pixel individually rotatable into at least two states, said array comprising: a base structure for supporting all of said pixels of said array, said array being maintained in a plane separate from the plane of said base; each said pixel defining a surface area, each said pixel being connected to an end of a beam support post and an intermediate portion which is supported by said base structure and connected to each said pixel through an opposite end of said beam support post, said intermediate portion is separated from said base structure by a hinge gap and from each said pixel by a beam gap and positioned therebetween for connecting said base structure to each said pixel by allowing each said pixel to deform with respect to said base.
Claim 12
Dependent Claim 26 words
The device set forth in claim 9 further comprising a HDTV system and wherein said array is the visual display of a high density television receiver.
Claim 13
Dependent Claim 24 words
The device set forth in claim 9 wherein said base structure includes discrete areas for providing signals for controlling said rotation of said pixels.
Claim 14
Dependent Claim 14 words
The device set forth in claim 11 wherein said discrete areas include address electrodes.
Claim 15
Dependent Claim 15 words
The device set forth in claim 12 wherein said discrete areas further include address circuitry.
Claim 16
Dependent Claim 29 words
The device set forth in claim 12 further including a substrate layer containing control circuitry; and interconnection structure for communicating signals from said control circuitry to said discrete areas.
Claim 17
Dependent Claim 16 words
The device set forth in claim 14 wherein said control circuitry is constructed using CMOS technology.
Claim 18
Dependent Claim 25 words
The device set forth in claim 9 further comprising a display system wherein said array is a portion of a visual display of said system.
Claim 19
Dependent Claim 26 words
The device set forth in claim 9 further comprising a printer system wherein said array is a portion of an imaging system of said printer system.
Claim 20
Dependent Claim 15 words
The device set forth in claim 7, wherein said hinge gap is an air gap.
Claim 21
Dependent Claim 15 words
The device set forth in claim 7, wherein said beam gap is an air gap.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2000-02-04 2000-08-05 2001-02-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2004-02-04 2004-08-05 2005-02-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2008-02-04 2008-08-05 2009-02-04 $7700.00 Window Closed / Lapsed

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