Radiation imagery chemistry: process – composition – or product th – Radiation modifying product or process of making – Screen other than for cathode-ray tube
Patent
1997-02-28
2000-02-15
McPherson, John A.
Radiation imagery chemistry: process, composition, or product th
Radiation modifying product or process of making
Screen other than for cathode-ray tube
430321, 445 24, G02B 520
Patent
active
060250976
ABSTRACT:
A method for creating a color filter on a display screen that allows better and more efficient adhesion of color pigment crystals to the screen display structure. In one embodiment, the present invention creates a color filter on a glass substrate having a pixel-defining structure. The present embodiment first creates a color filter slurry by mixing a polyvinyl alcohol solution with a color crystal pigment. The color filter slurry is then applied onto the interior surface of the display screen. The slurry is then dried. The dried color filter slurry is then exposed to an UV light from the exterior side of the display screen. The UV light exposes the color filter slurry through a photomask and through the display screen. The excess layer of color filter slurry is then removed, leaving behind a color filter of desired transmission wavelength such that light having similar wavelength are substantially transmitted and light of wavelengths different from said color pigment crystals are substantially filtered out by absorption.
REFERENCES:
patent: 4392077 (1983-07-01), Libman
patent: 5212575 (1993-05-01), Kojima et al.
patent: 5559397 (1996-09-01), Tsuruoka et al.
patent: 5606462 (1997-02-01), Tsuruoka et al.
Candescent Technologies Corporation
McPherson John A.
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