WO1994018694B1 - Flat panel device with internal support structure and/or raised black matrix - Google Patents

Flat panel device with internal support structure and/or raised black matrix

Info

Publication number
WO1994018694B1
WO1994018694B1 PCT/US1994/000602 US9400602W WO9418694B1 WO 1994018694 B1 WO1994018694 B1 WO 1994018694B1 US 9400602 W US9400602 W US 9400602W WO 9418694 B1 WO9418694 B1 WO 9418694B1
Authority
WO
WIPO (PCT)
Prior art keywords
spacer
faceplate
backplate
flat panel
ceramic
Prior art date
Application number
PCT/US1994/000602
Other languages
French (fr)
Other versions
WO1994018694A1 (en
Filing date
Publication date
Priority claimed from US08/012,542 external-priority patent/US5589731A/en
Priority claimed from US08/188,856 external-priority patent/US5477105A/en
Application filed filed Critical
Priority to DE69430568T priority Critical patent/DE69430568T3/en
Priority to EP94908603A priority patent/EP0683920B2/en
Priority to JP51805294A priority patent/JP3595336B2/en
Priority to AU61634/94A priority patent/AU6163494A/en
Publication of WO1994018694A1 publication Critical patent/WO1994018694A1/en
Publication of WO1994018694B1 publication Critical patent/WO1994018694B1/en

Links

Abstract

A flat panel device (300) includes a spacer (308) for providing internal support. The spacer can be made of ceramic or glass-ceramic. Spacer surfaces exposed within the flat panel device are treated to reduce secondary emissions and prevent charging of the spacer surfaces. A light-emitting structure contains a main section (302), a pattern of dark ridges (314) situated along the main section, and a plurality of electron-activated light-emissive regions (313) situated in spaces between the ridges. The dark ridges extend further away from the main section than the light-emissive regions to form a raised black matrix. When the light-emitting structure is used in an optical display, the raised black matrix contacts spacers (308) and, in so doing, protects the light-emissive regions from being damaged. The light-emitting structure can be formed according to various techniques of the invention.

Claims

- 67 -
AMENDED CLAIMS
[received by the International Bureau on 24 August 1994 (24.08.94); original claims 27, 28, 31, 33 and 37 amended; remaining claims unchanged (4 pages)]
23. A device as in Claim 19, further comprising an electrically conductive trace extending from each electrode to a location outside an active region of the device, wherein material is selectively removed from at least one of the traces to establish the desired voltages on the electrodes.
24. A device as in Claim 1, further comprising second edge metallization situated between a second edge surface of the spacer and the faceplate such that the edge metallization forms an electrical connection between the spacer and faceplate.
25. A device as in Claim 24, wherein a resistive coating is formed on the spacer surfaces, the edge metallization being electrically connected to the resistive coating.
26. A device as in Claim 25, wherein the interface between the edge metallization and the resistive coating is at a constant distance from an interior surface of the backplate.
27. A flat panel device comprising: a faceplate; a backplate connected to the faceplate to form a sealed enclosure; means for emitting light from the flat panel device; and a spacer wall situated within the enclosure and supporting the backplate and the faceplate against forces acting in a direction toward the enclosure, wherein the spacer wall is made of ceramic, ceramic reinforced glass, or metal coated with an insulating layer.
28. A flat panel device comprising: - 68 -
a faceplate a backplate connected to the faceplate to form a sealed enclosure; means for emitting light from the flat panel device; and a spacer situated within the enclosure and supporting the backplate and the faceplate against forces acting in a direction toward the enclosure, wherein the spacer is made of ceramic reinforced glass or metal coated with an insulating layer.
29. A flat panel device comprising: a faceplate; a backplate connected to the faceplate to form a sealed enclosure; means for emitting light from the flat panel device; and a spacer structure situated within the enclosure and supporting the backplate and the faceplate against forces acting in a direction toward the enclosure, a plurality of spacer structure holes being formed through the spacer structure.
30. A device as in any of Claims 1 through 29, wherein the means for emitting light further comprises: a field emitter cathode; and a light emissive structure formed over the faceplate.
31. A method for assembling a flat panel device, comprising the steps of: mounting a ceramic or glass-ceramic spacer wall between a backplate and faceplate; and sealing the backplate and faceplate together to encase the spacer wall in an enclosure. - 69 -
32. A method as in Claim 31, further comprising the step of mounting an addressing grid within the enclosure, a plurality of addressing grid holes being formed in the addressing grid.
33. A method as in Claim 31 or 32, wherein the sealing step further comprises the step of attaching a top wall, a bottom wall, and two side walls between the face¬ plate and backplate.
34. A method as in Claim 33, further comprising the step of aligning the spacer wall.
35. A method as in Claim 34, wherein the aligning step further comprises the steps of: forming a notch in the addressing grid; and placing the spacer wall in the notch.
36. A method as in Claim 34, wherein: the sealing step further comprises the step of attaching a top wall, bottom wall and two side walls between the faceplate and backplate; and the aligning step further comprises the steps of: forming a notch in the top wall or the bottom wall, and placing the spacer wall in the notch.
37. A method for assembling a flat panel device, comprising the steps of: mounting a ceramic or glass-ceramic spacer structure between a backplate and faceplate, a plurality of spacer structure holes being formed through the spacer structure; and sealing the backplate and faceplate together to encase the spacer structure in an enclosure. - 70 -
38. A method as in Claim 37, further comprising the steps of: drilling holes in sheets of ceramic or glass- ceramic material; and attaching the sheets of ceramic or glass-ceramic material together to form the spacer structure.
39. A method for assembling a flat panel device, comprising the steps of: mounting a spacer between a backplate and faceplate; treating surfaces of the spacer to prevent or minimize charge buildup on the spacer surfaces; coating an edge surface of the spacer with edge metallization such that the edge metallization forms
PCT/US1994/000602 1993-02-01 1994-02-01 Flat panel device with internal support structure and/or raised black matrix WO1994018694A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE69430568T DE69430568T3 (en) 1993-02-01 1994-02-01 FLAT SCREEN WITH INTERNAL STRUCTURE
EP94908603A EP0683920B2 (en) 1993-02-01 1994-02-01 Flat panel device with internal support structure
JP51805294A JP3595336B2 (en) 1993-02-01 1994-02-01 Flat panel device with spacer
AU61634/94A AU6163494A (en) 1993-02-01 1994-02-01 Flat panel device with internal support structure and/or raised black matrix

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US012,542 1993-02-01
US08/012,542 US5589731A (en) 1992-04-10 1993-02-01 Internal support structure for flat panel device
US18885794A 1994-01-31 1994-01-31
US08/188,856 US5477105A (en) 1992-04-10 1994-01-31 Structure of light-emitting device with raised black matrix for use in optical devices such as flat-panel cathode-ray tubes
US188,857 1994-01-31
US188,856 1994-01-31

Publications (2)

Publication Number Publication Date
WO1994018694A1 WO1994018694A1 (en) 1994-08-18
WO1994018694B1 true WO1994018694B1 (en) 1994-09-29

Family

ID=27359648

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1994/000602 WO1994018694A1 (en) 1993-02-01 1994-02-01 Flat panel device with internal support structure and/or raised black matrix

Country Status (5)

Country Link
EP (1) EP0683920B2 (en)
JP (1) JP3595336B2 (en)
AU (1) AU6163494A (en)
DE (1) DE69430568T3 (en)
WO (1) WO1994018694A1 (en)

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