Share Email Print
cover

Proceedings Paper

High-brightness and high-resolution projection CRT
Author(s): Zulun Lin; Jianbo Cheng; Kangcheng Qi; Quan Jian; Guogao Huang
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

A new 3-in. projection CRT that YAG(Y3Al5O12) single crystal is used for the substrate of the phosphor screen has been developed. This phosphor screen has a number of unusual properties. The substrate has a very high coefficient of thermal conductivity and a high transparency. To obtain matched sealing, a low melting point solder has been developed to combine the substrate with the glass envelope. An electrostatic-electromagnetic focusing electron gun with large emitting current and high-resolution is developed. As a result, beam spot diameters of 0.065 mm and 0.080 mm are achieved at cathode currents of 0.5 and 1 mA, respectively. The focusing luminance is 1.4 X 105 cd/m2 for green phosphor-screen at cathode current of 1 mA and the anode voltage of 29 KV. The focusing luminances of red phosphor-screen and blue phosphor screen are 6.4 X 104 cd/m2 and 8 X 103 cd/m2 at cathode current of 1 mA, respectively. Thus, the projection TV set using these projection tubes has achieved high-brightness, high-resolution and high-contrast image display.

Paper Details

Date Published: 18 August 1998
PDF: 7 pages
Proc. SPIE 3560, Display Devices and Systems II, (18 August 1998); doi: 10.1117/12.319661
Show Author Affiliations
Zulun Lin, Univ. of Electronic Science and Technology of China (China)
Jianbo Cheng, Univ. of Electronic Science and Technology of China (China)
Kangcheng Qi, Univ. of Electronic Science and Technology of China (China)
Quan Jian, Univ. of Electronic Science and Technology of China (China)
Guogao Huang, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 3560:
Display Devices and Systems II
Shou-Qian Ding; Bao Gang Wu, Editor(s)

© SPIE. Terms of Use
Back to Top