Patent · US Expired

Method of manufacturing the luminescent screen of a display device

US5069733A · kind A · utility

4Cited by

5References

13Claims

0Family size

Assignee

Nokia Unterhaltungselektronik GmbH · DE

Inventors

Eberhard Nill · Eßlingen, DE
Kurt M. Tischer · Wissen, DE

Key dates

Filing date	Jun 29, 1989
Grant date	Dec 3, 1991
Priority date	—
Expiry date	Jun 29, 2009

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41M1/34
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method of manufacturing luminescent screens (2) for, e.g., color picture tubes is described. It uses a printing apparatus with heated printing blocks (3) and tampons (4). The printing inks (D) consist of a mixture of a hot-melt adhesive and the respective luminescent materials. The printing inks are printed from the printing blocks directly on the inside of the faceplate (1) of the color picture tube. It is also possible to first print a black matrix (M) of a ceramic glass color.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.