Patent US5563470A successfully refreshed from Google Patents.
US5563470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tiled panel display assembly
Assignee: Cornell Research Foundation Inc
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Filing: 1994-08-31
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Granted: 1996-10-08
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Expires: 2014-08-31
Abstract
Abstract A panel display includes a common substrate on which a plurality of small display tiles are mounted in an array and electrically interconnected to replicate a large area panel. Each tile includes a plurality of contact pads which are aligned with corresponding contact pads on the substrate. Solder joints between corresponding contact pads mechanically align and secure the tiles on the substrate, and provide electrical connections therebetween. Selected substrate contact pads are electrically interconnected to provide electrical connections between adjacent tiles.
Inventors
- 👤 Che-Yu Li
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:07
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/02; H01J9/18; H01J9/185; H01J29/00; H01J29/02; H01J29/028; H01J29/92; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/123; H01J31/125; H01J2201/00; H01J2201/30; H01J2201/304; H01J2329/00; H01J2329/86; H01J2329/8625; H01J2329/863; H10; H10K; H10K59/00; H10K59/10; H10K59/18; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T156/1092; Y10T29/00; Y10T29/49; Y10T29/49002
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
194 words
A panel display, comprising: a base having a relatively large top surface area; a plurality of display tiles, each display tile having a top surface and a bottom surface, the top surface of each tile being relatively small with respect to said base top surface area, said plurality of tiles having a total top surface area substantially equal to said base top surface area; a second array of locator contacts on the bottom surface of each display tile, said contacts being precisely positioned for accurately locating each display tile on said base; a first array of locator contacts on the top surface of said base, said first array of contacts being precisely positioned for receiving and accurately locating said display tile on said base; and connector joints for mechanically interconnecting said second array of tile locator contacts with corresponding locator contacts of said first array, said joints being selected to provide a predetermined, uniform vertical spacing between each said tile and said base and to mechanically secure said tiles on said base, with selected joints providing electrical connections between selected contacts on said display tiles and said substrate to thereby electrically interconnect said tiles.
Claim 2
Dependent Claim
194 words
A panel display, comprising: a base having a relatively large top surface area; a plurality of display tiles, each display tile having a top surface and a bottom surface, the top surface of each tile being relatively small with respect to said base top surface area, said plurality of tiles having a total top surface area substantially equal to said base top surface area; a second array of locator contacts on the bottom surface of each display tile, said contacts being precisely positioned for accurately locating each display tile on said base; a first array of locator contacts on the top surface of said base, said first array of contacts being precisely positioned for receiving and accurately locating said display tile on said base; and connector joints for mechanically interconnecting said second array of tile locator contacts with corresponding locator contacts of said first array, said joints being selected to provide a predetermined, uniform vertical spacing between each said tile and said base and to mechanically secure said tiles on said base, with selected joints providing electrical connections between selected contacts on said display tiles and said substrate to thereby electrically interconnect said tiles.
Claim 3
Dependent Claim
13 words
The display of claim 1, wherein said connector joints comprise a reflowable material.
Claim 4
Dependent Claim
11 words
The display of claim 1, wherein said connector joints comprise solder.
Claim 5
Dependent Claim
21 words
The display of claim 1, wherein each display tile includes emitter means electrically connected to corresponding contacts of said second array.
Claim 6
Dependent Claim
25 words
The display of claim 4, wherein each said display tile further includes a via connecting said emitter means to selected contacts in said second array.
Claim 7
Dependent Claim
31 words
The display of claim 4, wherein each said display tile further includes connector leads on an outer surface thereof to connect said emitter means to selected contacts in said second array.
Claim 8
Dependent Claim
18 words
The display of claim 1, wherein each of said plurality of display tiles incorporates an individual display screen.
Claim 9
Dependent Claim
16 words
The display of claim 1, further including a single display screen covering said plurality of tiles.
Claim 10
Dependent Claim
17 words
The display of claim 1, wherein each display tile includes a thin film transistor active matrix display.
Claim 11
Dependent Claim
26 words
The display of claim 9, wherein said active matrix display includes electrodes, and electrical interconnects on said tiles electrically connecting selected electrodes to corresponding tile contacts.
Claim 12
Dependent Claim
18 words
The display of claim 10, wherein said electrical interconnects comprise connector leads on exterior surfaces of said tiles.
Claim 13
Dependent Claim
28 words
The display of claim 1, further including metallized electrical interconnects extending between selected locator contacts on the top surface of said substrate for electrically interconnecting adjacent display tiles.
Claim 14
Dependent Claim
19 words
The display of claim 1, wherein said locator contacts of said first and second arrays comprise metal contact pads.
Claim 15
Dependent Claim
15 words
The display of claim 13, wherein each said metal contact pad comprises plural metal layers.
Claim 16
Dependent Claim
42 words
The display of claim 1 wherein each said connector joint comprises reflowable solder secured to a corresponding locator contact, said solder being sized to provide uniform equilibrium solder joint heights when said solder is reflowed to join said tiles to said substrate.
Claim 17
Dependent Claim
30 words
The display of claim 15, wherein said first array of contacts on said substrate includes plural groups of substrate metal contact pads, one group for each of said display tiles.
Claim 18
Dependent Claim
37 words
The display of claim 16, wherein said second array of contacts on each tile includes a plurality of tile metal contact pads, each tile being positioned for alignment with a corresponding group of substrate metal contact pads.
Claim 19
Dependent Claim
19 words
The display of claim 17, wherein reflowable solder joints connect and align corresponding tile and substrate metal contact pads.
Claim 20
Dependent Claim
14 words
The display of claim 1, wherein said connector joint comprises a conductive adhesive material.
Claim 21
Dependent Claim
171 words
A high yield large area display panel comprising: a base having a top surface with a relatively large top surface area; a plurality of small area display tiles, each selected for its display characteristics and each having a top surface and a bottom surface, the top surface of each tile being smaller in area than said base top surface; an array of base locator contacts on said top surface of said base, said base locator contacts being positioned for receiving and accurately locating said display tiles on said base; an array of tile locator contacts on the bottom surface of each of said display tiles, said tile locator contacts being precisely positioned for alignment with corresponding base locator contacts for accurately locating each display tile on said base; and connector joints for interconnecting said base locator contacts with corresponding said tile locator contacts to bond said plurality of tiles on said base, said connector joints being reflowable to passively align said tile locator contacts with said base locator contacts during reflow.
Claim 22
Dependent Claim
171 words
A high yield large area display panel comprising: a base having a top surface with a relatively large top surface area; a plurality of small area display tiles, each selected for its display characteristics and each having a top surface and a bottom surface, the top surface of each tile being smaller in area than said base top surface; an array of base locator contacts on said top surface of said base, said base locator contacts being positioned for receiving and accurately locating said display tiles on said base; an array of tile locator contacts on the bottom surface of each of said display tiles, said tile locator contacts being precisely positioned for alignment with corresponding base locator contacts for accurately locating each display tile on said base; and connector joints for interconnecting said base locator contacts with corresponding said tile locator contacts to bond said plurality of tiles on said base, said connector joints being reflowable to passively align said tile locator contacts with said base locator contacts during reflow.
Claim 23
Dependent Claim
19 words
The display panel of claim 20, wherein said reflowable connector points electrically and mechanically interconnect said tiles and base.
Claim 24
Dependent Claim
45 words
The display panel of claim 20, wherein a first selected group of the reflowable connector joints electrically interconnects said tiles and base and a second selected group of the reflowable connector joints provides mechanical support but not an electrical connection between said tiles and base.
Claim 25
Dependent Claim
29 words
The display panel of claim 20, wherein at least one display tile has a side surface and at least one tile side locator contact located on said side surface.
Claim 26
Dependent Claim
25 words
The display panel of claim 23, further including a second connector joint for interconnecting said tile side locator contact with a selected base locator contact.
Claim 27
Dependent Claim
15 words
The display panel of claim 20, wherein said display tiles are liquid crystal display elements.
Claim 28
Dependent Claim
13 words
The display panel of claim 20, wherein said display tiles are field emitters.
Claim 29
Dependent Claim
16 words
The display panel of claim 20, wherein said display tiles incorporate active matrix thin film transistors.
Claim 30
Dependent Claim
13 words
The display panel of claim 20, wherein said base is a transparent substrate.
Claim 31
Dependent Claim
13 words
The display panel of claim 20, wherein said base is an opaque substrate.
Claim 32
Dependent Claim
171 words
A high yield large area display panel comprising: a base having a top surface with a relatively large top surface area; a plurality of small area liquid crystal display tiles, each selected for its display characteristics and each having a top surface and a bottom surface, the top surface of each tile being smaller in area than said base top surface; an array of base locator contacts on said top surface of said base, said base locator contacts being positioned for receiving and accurately locating said display tiles on said base; an array of tile locator contacts on the bottom surface of each of said display tiles, said tile locator contacts being precisely positioned for alignment with corresponding base locator contacts for accurately locating each display tile on said base; connector joints for interconnecting said base locator contacts with corresponding tile locator contacts to bond said plurality of tiles on said base, said connector joints being reflowed to passively align said tile locator contacts with said base locator contacts during reflow.
Claim 33
Dependent Claim
171 words
A high yield large area display panel comprising: a base having a top surface with a relatively large top surface area; a plurality of small area liquid crystal display tiles, each selected for its display characteristics and each having a top surface and a bottom surface, the top surface of each tile being smaller in area than said base top surface; an array of base locator contacts on said top surface of said base, said base locator contacts being positioned for receiving and accurately locating said display tiles on said base; an array of tile locator contacts on the bottom surface of each of said display tiles, said tile locator contacts being precisely positioned for alignment with corresponding base locator contacts for accurately locating each display tile on said base; connector joints for interconnecting said base locator contacts with corresponding tile locator contacts to bond said plurality of tiles on said base, said connector joints being reflowed to passively align said tile locator contacts with said base locator contacts during reflow.
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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) | 1999-10-08 | 2000-04-08 | 2000-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-10-08 | 2004-04-08 | 2004-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-10-08 | 2008-04-08 | 2008-10-08 | $7700.00 | Window Closed / Lapsed |