Process for manufacturing a luminescent display screen that feat

Details Process for manufacturing a luminescent display screen that feat Process for manufacturing a luminescent display screen that feat

1996-04-08

1998-03-10

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

Electrode making

427 68, H01J 9227

Patent

active

057254079

ABSTRACT:
A process is described for the manufacture of a luminescent screen that eliminates image distorting or crosstalk effects resulting from secondary and back-scattered electrons that end up in adjoining sub-pixels. An unusually thick (ca. 70 microns) black matrix is first formed on the substrate surface and is given a tapered cross-sectional shape such that it is smaller at its top surface than at the substrate surface. Said tapered profile may be achieved through a screen-on process or by an overetching process. This is followed by the deposition of a transparent conductive layer, such as ITO, onto which the various layers of different phosphors that make up the sub-pixels of the display are deposited by means of electrophoresis.

REFERENCES:
patent: 4243735 (1981-01-01), Kobale et al.
patent: 4325002 (1982-04-01), Kobale et al.
patent: 4485158 (1984-11-01), Harper
patent: 4670296 (1987-06-01), Akiba

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