Radiation imagery chemistry: process – composition – or product th – Radiation modifying product or process of making – Screen other than for cathode-ray tube
Patent
1999-02-10
2000-08-29
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
G02B 520, G02F 11335
Patent
active
061106259
ABSTRACT:
The invention relates to a method for manufacturing color filters utilizing a color electrodeposition coating which contains an anionic electrodeposition resin having a low acid value. Said method comprises coating a layer of positive photoresist onto a transparent electrically conductive substrate, exposing the substrate under a photomask or photomasks to form regions of different initial levels of exposure energy, exposing the entire surface of the substrate through an energy-incrementing way to, progressively, allow all regions of the substrate to achieve an energy sufficient to completely expose the photoresist on each corresponding region, developing stepwise each region with a same developer solution to cause the electrically conductive substrate of the corresponding region uncovered, electrodepositing said region with a color electrodeposition coating containing an anionic electrodeposition resin having a low acid value to finish the pixel arrangements of the desired colors and completely exposing the substrate. The low acid value anionic electrodeposition resin utilized in the invention has an acid value of 1 to 70 mg KOH/g. The method of the invention shows the advantages of having a high degree of freedom in pattern figures and a wide process window. Moreover, the manufacture color filters of large surface and the perfect yield rate of products are possible.
REFERENCES:
patent: 5186801 (1993-02-01), Matsumura et al.
patent: 5478681 (1995-12-01), Yamasita et al.
patent: 5641595 (1997-06-01), Hsieh et al.
patent: 5645970 (1997-07-01), Cheng et al.
Cheng Hua-Chi
Cheng Shu-Huei
Hsieh Pao-Ju
Jan Ming-Shiang
Kuwahara Hajime
Industrial Technology Research Institute
McPherson John A.
Sumitomo Chemical Company Ltd.
LandOfFree
Methods for manufacturing color filters does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Methods for manufacturing color filters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods for manufacturing color filters will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1247920