Superhigh-resolution electron gun for color display CRT

Hsing-Yao Jim Chen; Sen-Su Tsai

doi:10.1117/12.131294

27 October 1992 Superhigh-resolution electron gun for color display CRT

Hsing-Yao Jim Chen, Sen-Su Tsai

Proceedings Volume 1815, Display Technologies; (1992) https://doi.org/10.1117/12.131294
Event: International Symposium on Optoelectronics in Computers, Communications, and Control, 1992, Hsinchu, Taiwan

Abstract

There have been a few new trends for CRT electron gun design in recent years. First, beacause of the rapid improveznts in computer speed and uznory size, more elaborate and accurate computer modeling programs for electron gun design have develope . (1, 2, 3) More and more design engineers rely on the uses of computer modeling to do the design work. Even the US Patent Office has recently started to accept computer modeling results as interchangeable with actual test results. Second, for the high resolution color CRT eletron gun, most companies chose to adopt the COTY(4,5,6) type counon lens design which drastically reduces the aberration coefficient of the main lens. Third, for the best uniform spot performance over the whole sceen of an inline color cRT, a dynamic focusing and dynamic qiiadrupole lens are required. The above mentioned second and third items involve the asynnetric optics design. Most of the tiu, conventional intuitive thinking is not good enough for design optmization. This paper presents a new computer-'designed super high-resolution color electrn gun which asytanetric main lens and dynamic quadrupole region. We also present two cases of the nasured spot performance which are compared to our computer modeling prediction of the sa. design. This indicates that in the current range (from 100 uA to 400 uA) the high—resolution color display is most likely to be used, and the predicted 5% spot size is almost identical to the tested results

Citation Download Citation

Hsing-Yao Jim Chen and Sen-Su Tsai "Superhigh-resolution electron gun for color display CRT", Proc. SPIE 1815, Display Technologies, (27 October 1992); https://doi.org/10.1117/12.131294

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KEYWORDS

CRTs

Computer simulations

Display technology

Data modeling

Dubnium

Monochromatic aberrations

Lens design

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