Image device and method of manufacturing the same
View Patent ↗An image device which includes reflowed color filters. Reflowed color filters may be formed by heat treating preliminary color filters. When preliminary color filters are reflowed, color filters of different colors may be formed continuous with each other. Contiguous color filters in an image device may reduce manufacturing costs, maximize optical efficiency, minimize noise, and/or minimize crosstalk.
1. A method for manufacturing an image device, the method comprising the steps of:
forming a first color filter melted at a first temperature on a pixel array substrate;
after forming the first color filter, forming a second color filter melted at a second temperature in adjacent to a lateral side of the first color filter;
after forming the second color filter, forming a third color filter melted at a third temperature in adjacent to lateral sides of the first color filter; and
forming micro lenses formed on the first to third color filters,
wherein the third temperature is lower than the second temperature and the second temperature is lower than the first temperature.
2. The method as claimed in claim 1 , wherein the first to third temperatures correspond to 120° C. to 140° C.
3. The method as claimed in claim 1 , wherein the step of forming the first color filter comprises:
forming a first color filter layer on the pixel array substrate;
forming a first preliminary color filter by patterning the first color filter layer; and
hardening the first preliminary color filter.
4. A method for manufacturing an image device, the method comprising the steps of:
forming a first color filter melted at a first temperature on a pixel array substrate;
forming a second color filter melted at a second temperature in adjacent to a lateral side of the first color filter;
forming a third color filter melted at a third temperature in adjacent to lateral sides of the first color filter; and
forming micro lenses formed on the first to third color filters,
wherein the step of forming the second color filter comprises:
forming a second preliminary color filter spaced apart from a lateral side of the first color filter by a first interval;
forming the second color filter by melting the second preliminary color filter at the second temperature lower than the first temperature; and
hardening the second color filter.
5. The method as claimed in claim 4 , wherein the second preliminary color filter has a height higher than that of the first color filter.
6. The method as claimed in claim 5 , wherein the second preliminary color filter has a height proportional to the first interval.
7. The method as claimed in claim 1 , wherein the step of forming the third color filter comprises:
forming a third preliminary color filter spaced apart from a lateral side of the first color filter by a second interval;
forming the third color filter by melting the third preliminary color filter at the third temperature lower than the first and second temperatures; and
hardening the third color filter.
8. The method as claimed in claim 7 , wherein the third preliminary color filter has a height higher than that of the first color filter.
9. The method as claimed in claim 8 , wherein the third preliminary color filter has a height proportional to the second interval.
10. The method as claimed in claim 1 , wherein heights of the first to third color filters are substantially identical to each other when measured from a surface of the pixel array substrate.
11. The method as claimed in claim 1 , wherein the micro lenses formed on the first to third color filters are interconnected to each other.
12. A method for manufacturing an image device, the method comprising the steps of:
forming a first color filter having a first melting temperature and a first height on a pixel array substrate;
forming a second color filter member on the pixel array substrate spaced apart from the first color filter by a first interval, in which the second color filter member has a second melting temperature lower than the first melting temperature and a second height higher than the first color filter;
forming a second color filter by selectively melting the second color filter member at the second melting temperature, in which the second color filter makes contact with the first color filter and has the first height;
forming a third color filter member on the pixel array substrate spaced apart from the second color filter by a second interval, in which the third color filter member has a third melting temperature lower than the second melting temperature and a third height higher than the second color filter member;
forming a third color filter by selectively melting the third color filter member at the third melting temperature, in which the third color filter makes contact with the second color filter and has the first height; and
forming micro lenses formed on the first to third color filters.
13. The method as claimed in claim 12 , wherein the first to third melting temperatures correspond to 120° C. to 140° C.
14. The method as claimed in claim 12 , wherein the second and third heights are proportional to the first and second intervals.
15. The method as claimed in claim 7 , wherein the first to third temperatures correspond to 120° C. to 140° C.
16. The method as claimed in claim 7 , wherein the step of forming the first color filter comprises:
forming a first color filter layer on the pixel array substrate;
forming a first preliminary color filter by patterning the first color filter layer; and
hardening the first preliminary color filter.