# US 5,703,432 A · Screen structure of a cathode-ray tube

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- Number: US 5,703,432 A
- Document ID: US5703432A
- Status: Granted
- Kind: A
- Application number: 08/645,276
- Filed: 1996-05-13
- Granted: 1997-12-30
- Earliest claimed: 1995-06-21
- Assignees: Samsung Display Devices Co., Ltd.
- Inventors: Bong-kwon Jeong
- Web page: https://patentgrep.com/patent/US5703432A

## CPC

- H01J 29/327: {Black matrix materials}
- H01J 1/62: Luminescent screens; Selection of materials for luminescent coatings on vessels
- H01J 29/185: {measures against halo-phenomena}
- H01J 29/187: {screens with more than one luminescent material (as mixtures for the treatment of the screens) (for several superimposed luminescent layers H01J29/26; for adjacent dots or lines of different luminescent material H01J29/32)}
- H01J 29/32: with adjacent dots or lines of different luminescent material, e.g. for colour television
- H01J: ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS (spark-gaps H01T; electric arc lamps H05B31/00; particle accelerators H05H)

## Abstract

A screen structure of a cathode-ray tube includes color filters of three R, G and B colors arranged individually on the inside of the panel, black matrixes between each color filter, a complex phosphor which mixes phosphors of the R, G and B three primary colors in equal proportion on the front side, black matrixes and color filters being spread on the front side, to maintain the most suitable repeatability of images, namely the most suitable color purity and brightness character, demonstrating an easy formation of the screen.

## Claims

### Claim 1

A screen structure for a cathode-ray tube comprising:
red, green, and blue color filters arranged on the screen;
black matrixes disposed between the color filters; and
a complex phosphor comprising at least two phosphors selected from a group consisting of red, green, and blue phosphors in substantially equal proportion spread on the color filters and the black matrixes.

### Claim 2 (depends on 1)

The screen structure for a cathode-ray tube according to claim 1 wherein the complex phosphor comprises red, green, and blue phosphors.

### Claim 3 (depends on 1)

The screen structure for a cathode-ray tube according to claim 1 wherein the complex phosphor comprises green and blue phosphors.