Method of making a display screen for a color television display

Details Method of making a display screen for a color television display Method of making a display screen for a color television display

1979-02-26

1981-01-13

Welsh, John D.

Radiation imagery chemistry: process, composition, or product th

Producing cathode-ray tube or element thereof

Using specific control or specific modification of exposure,...

430 25, 430 28, 430 42, 430 35, 430942, 430 53, 427 68, G03G 1301

Patent

active

042450209

ABSTRACT:
A method of making a display screen for a color television display tube in which a photoconductive layer on the window portion of the tube is provided with a uniform charge which may be either positive or negative. A charge pattern is then formed on that layer by scanning it with an electron beam passing through an apertured color selection electrode. The energy of the beam is such that the average depth of penetration of the electrons is greater than the thickness of the photoconductive layer so that the charge disappears at the regions struck by the beam. The remaining charge pattern is developed with a suspension of charged phosphor particles. By repeating this process, patterns of red, green and blue luminescent phosphor particles can be successively provided to form the display screen. It is also possible to scan the layer simultaneously or successively by three electron beams and to develop the resultant charge pattern with a light-absorbing pigment.

REFERENCES:
patent: 4065306 (1977-12-01), Ross et al.
patent: 4095134 (1978-06-01), Stirk

Affiliated with

Also associated with

Rating

Method of making a display screen for a color television display does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of making a display screen for a color television display, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of making a display screen for a color television display will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2231893