Flat panel display anode plate having isolation grooves

Details Flat panel display anode plate having isolation grooves Flat panel display anode plate having isolation grooves

1995-06-07

1999-02-16

Bradley, P. Austin

Electric lamp or space discharge component or device manufacturi

Process

Electrode making

445 24, H01J 9227, H01J 920

Patent

active

058713832

ABSTRACT:
A grooved anode plate 40 for use in a field emission flat panel display device comprises a transparent planar substrate 42 having a plurality of electrically conductive, parallel stripes 46 comprising the anode electrode of the device, which are covered by phosphors 48.sub.R, 48.sub.G and 48.sub.B. In one embodiment, grooves 50, having generally straight sidewalls, are formed in the upper surface of planar substrate 42 at the interstices of conductors 46. In a second embodiment, grooves 50', which provide a substantial undercutting of the material of substrate 42' adjacent the edges of conductors 46', are formed in the upper surface of planar substrate 42' at the interstices of conductors 46'. A substantially opaque, electrically insulating material 52 is affixed to substrate 42 in the grooves 50 formed between conductors 46, acting as a barrier to the passage of ambient light into and out of the device. The grooves 50 in the surface of substrate 42 and the electrical insulating quality of opaque material 52 increase the electrical isolation of conductive stripes 46 from one another, reducing the risk of breakdown due to increased leakage current. Opaque material 52 preferably comprises glass having impurities dispersed therein, wherein the impurities may include one or more organic dyes, selected to provide relatively uniform opacity over the visible range of the electromagnetic spectrum. Alternatively, the impurities may include the black oxide of a transition metal such as cobalt. Two methods of fabricating grooved anode plate 40 are disclosed.

REFERENCES:
patent: 3755704 (1973-08-01), Spindt et al.
patent: 4940916 (1990-07-01), Borel et al.
patent: 5194780 (1993-03-01), Meyer
patent: 5225820 (1993-07-01), Clerc
patent: 5520562 (1996-05-01), Wallace et al.
patent: 5558554 (1996-09-01), Finklea et al.

Affiliated with

Also associated with

Rating

Flat panel display anode plate having isolation grooves does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Flat panel display anode plate having isolation grooves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flat panel display anode plate having isolation grooves will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2057678