Simple antireflection coatings for cathode ray tube and other display devices

Joachim Szczyrbowski; Stephan Roegels; Klaus Hartig

doi:10.1117/12.22378

1 December 1990 Simple antireflection coatings for cathode ray tube and other display devices

Joachim Szczyrbowski, Stephan Roegels, Klaus Hartig

Proceedings Volume 1323, Optical Thin Films III: New Developments; (1990) https://doi.org/10.1117/12.22378
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

Abstract

Some interference filter with antireflecting, antistatic and contrast enhancing effects were investigated both by computer simulations and experimentally. The aim was to prepare such coatings for TV cathode ray tubes and display devices on large scale by magnetron sputteritig. To avoid large values of the thicknesses of the individual films ( high preparation cost) and to achieve the antistatic and contrast enhancing effect an electrical conducting and light absorbing layer is embedded between insulating, non-absorbing films. For the mechanical durability a hard material as TiN, ZrN or HfN was taken into account. Good results were obtained with TiN. As an example, the obtained total thickness of a three layer filter with a light ref lectance lower or equal 0.4 % and a light transmission of 30 % was about 100 mu. The sheet resistivity for this filter is of about 300 Ohm. For a conventional dielectric filter with the same antireflecting result the total thickness is usually of about 250 nm. Finally, two, three and five layer filters were successfully prepared on an industrial sputtering coater.

Citation Download Citation

Joachim Szczyrbowski, Stephan Roegels, and Klaus Hartig "Simple antireflection coatings for cathode ray tube and other display devices", Proc. SPIE 1323, Optical Thin Films III: New Developments, (1 December 1990); https://doi.org/10.1117/12.22378

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