Radiation imagery chemistry: process – composition – or product th – Radiation modifying product or process of making – Screen other than for cathode-ray tube
Patent
1998-08-12
2000-03-14
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, 430394, 349107, G02F 11335
Patent
active
06037084&
ABSTRACT:
The method includes patterning red, green and blue pixels (R, G, B) on a substrate. A transparent positive type photoresist is coated on the color pixels. A first exposure is performed by an illumination using a photomask having an opening aligned to the red pixels (R). Next, the photomask is relatively shift to a position such that the opening is aligned to the green pixels (g). Then, a second exposure is carried out to expose the positive photoresist. Similarly, the photomask is also shift such that the opening is aligned to the blue pixels. Subsequently, the positive photoresist is exposed by the illumination by using the photomask. The positive photoresist is exposed by controlling the intensity of the illumination, exposure time or the combination thereof. Then, the positive photoresist is developed by conventional manner. Subsequently, a color filter plate with multi-gap for LCD is formed.
REFERENCES:
patent: 4632514 (1986-12-01), Ogawa et al.
Research Disclosure 40987, "One Resist Layer with Several Functions Using Different Thickness in Pearl-less LCD", May 1998.
Lu Yong-Hong
Ting Dai-Liang
Industrial Technology Research Institute
McPherson John A.
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