# US 4,395,244 A · Method of making a display panel

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- Number: US 4,395,244 A
- Document ID: US4395244A
- Status: Granted
- Kind: A
- Application number: 06/253,993
- Filed: 1981-04-13
- Granted: 1983-07-26
- Earliest claimed: 1979-06-22
- Inventors: David Glaser
- Web page: https://patentgrep.com/patent/US4395244A

## CPC

- H01J 9/261: {the vessel being for a flat panel display (for flat discharge lamps H01J9/268)}
- H01J: ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS (spark-gaps H01T; electric arc lamps H05B31/00; particle accelerators H05H)

## Abstract

A method of making a display panel comprising a transparent rigid substrate and an electrode structure held against the rigid substrate by means of a flexible backing comprises the steps of sandwiching the electrode structure between the transparent rigid substrate and flexible backing, sealing the backing to the substrate and evacuating the atmosphere from the sealed sandwich structure. The atmospheric air pressure causes the flexible backing to uniformly press the electrode structure against the transparent rigid substrate. A suitable gas atmosphere and getter device is also disclosed.

## Claims

### Claim 1

A method of manufacturing a display panel, comprising the steps of
positioning an electrode structure against one face of a rigid, glass pane having a window area,
positioning a substantially impervious, flexible sheet over said electrode structure,
sealing said sheet to said pane along a continuous area surrounding said electrode structure, and
reducing the pressure in the space between said sheet and said pane in which said electrode structure is located below the pressure on the external side of said sheet to press said electrode structure against said pane.

### Claim 2 (depends on 1)

A method according to claim 1, comprising the additional step of
covering the exposed surface of said flexible sheet with a protective cover.

### Claim 3 (depends on 2)

A method according to claim 2, wherein the step of covering comprises
potting the exposed surface of said flexible sheet in expanded plastic foam.

### Claim 4 (depends on 1)

A method according to claim 1, wherein said electrode structure is a self-standing assemblage, comprising
assembling said electrode structure prior to the step of positioning said structure against said pane.

### Claim 5 (depends on 1)

A method according to claim 1, comprising the additional step of
positioning a compressible blanket between said electrode structure and said flexible sheet prior to said step of sealing said flexible sheet to said pane.

### Claim 6

A method of manufacturing a flat-panel display, comprising the steps of
positioning an electrode structure against one face of a rigid panel over a window area in said panel,
positioning a getter rearwardly of said panel,
positioning a melleable, gas-impervious metal foil sheet over said getter and said electrode structure
sealing said sheet to said panel throughout a continuous area surrounding said electrode structure and said getter,
pumping gas out of the space between said panel and said fail sheet,
backfilling said space with one or more noble gases while maintaining the pressure in said space below atmospheric pressure, and then
operating said getter to remove reactive gases from said space and to further reduce the pressure therein.

### Claim 7

A method of manufacturing a flat-panel display, comprising the steps of
positioning an electrode structure against one face of a rigid panel over a window area in said panel,
positioning a porous, compressible blanket over said electrode structure,
positioning a getter rearwardly of said panel,
positioning a malleable, gas-impervious metal foil sheet over said blanket and said getter and said electrode structure,
sealing said sheet to said panel throughout a continuous area surrounding said electrode structure and said getter,
pumping gas out of the space between said panel and said fail sheet,
backfilling said space with one or more nobel gases while maintaining the pressure in said space below atmospheric pressure, and then
operating said getter to remove reactive gases from said space and to further reduce the pressure therein.