Manufacture of color filters by incremental exposure method

Details Manufacture of color filters by incremental exposure method Manufacture of color filters by incremental exposure method

1996-01-16

1997-06-24

Rosasco, S.

Radiation imagery chemistry: process, composition, or product th

Radiation modifying product or process of making

Screen other than for cathode-ray tube

430 20, G03F 900

Patent

active

056415958

ABSTRACT:
A method for making color filters containing a color matrix with at least three desired colored layers comprising the steps of: (a) forming a positive energy-accumulable photoresist layer on a transparent electrically conductive substrate; (b) pre-conditioning the energy-accumulable photoresist layer to form at least three regions of different initial levels of exposure energy, from a highest to a lowest; (c) using a developer solution to develop and remove the region of the photoresist layer with the highest level of initial exposure energy to thereby cause a corresponding area of the electrically conductive substrate underlying the photoresist to be uncovered; (d) electrodepositing a photo-curable resin of a desired color and a predetermined exposure energy required for curing onto the uncovered area of the substrate; (e) overall-exposing the photoresist layer to a light source so as to impart an incremental exposure energy to all regions of the photoresist layer; (f) using a developer solution to develop and remove the region of the photoresist layer which has accumulatively attained the full exposure energy in step (e) and uncover a corresponding area on the substrate; (g) electrodepositing a photo-curable resin of another desired color onto the uncovered area of the substrate formed in step (f); and (h) repeating steps (e) through (g) until all the desired colored layers are selectively developed on the substrate. The incremental exposure energy is provided in step (e) such that: (i) it enables a region with a next highest initial exposure energy to attain full exposure energy, and (ii) it equals to or exceeds the exposure energy required for curing the photo-curable resin to thereby, at the same time, cause the photo-curable resin to become hardened.

REFERENCES:
patent: 4786148 (1988-11-01), Sekimura et al.
patent: 4812387 (1989-03-01), Suzuki et al.
patent: 4820619 (1989-04-01), Sanada et al.
patent: 4837098 (1989-06-01), Shimamura et al.
patent: 5085973 (1992-02-01), Shimizu et al.
patent: 5214541 (1993-05-01), Yamasita et al.
patent: 5214542 (1993-05-01), Yamasita et al.
patent: 5385795 (1995-01-01), Yuasa et al.
patent: 5399449 (1995-03-01), Tanimoto et al.

Affiliated with

Also associated with

Rating

Manufacture of color filters by incremental exposure method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Manufacture of color filters by incremental exposure method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Manufacture of color filters by incremental exposure method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-148251