Electronic device having a color filter and method of forming the same

Patent metadata

Field	Value
Publication number	US-10033974-B2
Application number	US-201514797656-A
Country	US
Kind code	B2
Filing date	Jul 13, 2015
Priority date	Aug 29, 2014
Publication date	Jul 24, 2018
Grant date	Jul 24, 2018

Abstract

An electronic device is provided. The electronic device includes a first inorganic color filter including a first surface on which light is incident and a second surface opposite the first surface; and a first organic color filter disposed on the first surface of the first inorganic color filter.

First claim

What is claimed is:

1. An electronic device comprising:
a first inorganic color filter including a first surface on which light is incident and a second surface opposite the first surface;
a first organic color filter disposed on the first surface of the first inorganic color filter;
a second inorganic color filter disposed between the first inorganic color filter and the first organic color filter; and
an intermediate organic color filter disposed between the first inorganic color filter and the second inorganic color filter,
wherein a first color filter thickness of the first organic color filter in a direction orthogonal to the first surface is less than a first inorganic filter thickness of the first inorganic color filter,
wherein an intermediate filter thickness of the intermediate organic color filter in the direction orthogonal to the first surface is less than the first color filter thickness of the first organic color filter, and
wherein the first inorganic color filter includes a plurality of layers.

2. The electronic device according to claim 1 , further comprising
a second organic color filter disposed on the second surface of the first inorganic color filter.

3. The electronic device according to claim 2 , wherein a second color filter thickness of the second organic color filter in the direction orthogonal to the first surface is less than the first color filter thickness of the first organic color filter.

4. The electronic device according to claim 1 , wherein a second inorganic filter thickness of the second inorganic color filter in the direction orthogonal to the first surface is greater than the intermediate filter thickness of the intermediate organic color filter.

5. The electronic device according to claim 1 , further comprising
a buffer layer disposed under the first inorganic color filter.

6. The electronic device according to claim 1 , further comprising
a planarization layer disposed on the first organic color filter.

7. An electronic device, comprising:
a substrate including a first pixel area and a second pixel area;
a first organic color filter disposed on the first pixel area of the substrate;
a second organic color filter disposed on the second pixel area of the substrate; and
an inorganic color filter disposed between the substrate and the second organic color filter,
wherein a progress direction of light penetrating the inorganic color filter is a direction orthogonal to the substrate,
wherein the inorganic color filter includes a plurality of layers, and
wherein a first level of a first lower surface of the first organic color filter in a first substrate direction toward the substrate is the same as a second level of a second lower surface of the inorganic color filter in the first substrate direction.

8. The electronic device according to claim 7 , wherein a second organic filter thickness of the second organic color filter is less than a first organic filter thickness of the first organic color filter in an orthogonal direction orthogonal to the substrate.

9. The electronic device according to claim 7 , further comprising
a metal pattern disposed between the inorganic color filter and the first organic color filter.

10. The electronic device according to claim 9 , wherein a metal pattern thickness of the metal pattern in an orthogonal direction orthogonal to the substrate decreases as a distance in a direction parallel to the substrate increases from the inorganic color filter.

11. The electronic device according to claim 9 , wherein the first organic color filter and the second organic color filter extend over and on the metal pattern.

12. The electronic device according to claim 11 , wherein a second side surface of the second organic color filter directly contacts a first side surface of the first organic color filter over and on the metal pattern.

13. The electronic device according to claim 7 , wherein a second upper surface level of a second upper surface of the second organic color filter in a second substrate direction away from the substrate is the same as a first upper surface level of a first upper surface of the first organic color filter in the second substrate direction.

14. An electronic device comprising:
a substrate including a green pixel area, a blue pixel area, and a red pixel area;
a red organic filter disposed on the substrate in the red pixel area;
a green organic filter disposed on the substrate in the green pixel area;
a blue organic filter disposed on the substrate in the blue pixel area; and
an inorganic color filter disposed between the substrate and at least one of the red organic filter, the green organic filter, and the blue organic filter,
wherein the inorganic color filter includes a plurality of layers, and
wherein a first level of a first lower surface of the inorganic color filter in a first substrate direction toward the substrate is the same as a second level of a second lower surface of the at least one of the red organic filter, the green organic filter, and the blue organic filter that does not have the inorganic color filter, in the first substrate direction.

15. The electronic device according to claim 14 , wherein the inorganic color filter is disposed between the substrate and two of the red organic filter, the green organic filter, and the blue organic filter so as to be shared between the two.

16. The electronic device according to claim 14 , wherein the substrate includes a plurality of green pixel areas, a plurality of blue pixel areas, and a plurality of red pixel areas, wherein the plurality of green pixel areas are arranged in diagonal directions.

17. The electronic device according to claim 16 , wherein the plurality of red pixel areas are arranged between the plurality of green pixel areas in a horizontal direction.

18. The electronic device according to claim 17 , wherein the plurality of red pixel areas are arranged only between the plurality of green pixel areas in the horizontal direction.

19. The electronic device according to claim 14 , wherein the substrate includes a plurality of pixel areas arranged in an array, and the plurality of pixel areas comprises a plurality of green pixel areas, a plurality of blue pixel areas, and a plurality of red pixel areas, wherein:
the plurality of green pixel areas are arranged in diagonal directions in the array,
the plurality of red pixel areas are arranged between the plurality of green pixel areas in even numbered horizontal lines of the array, and
the plurality of blue pixel areas are arranged between the plurality of green pixel areas in odd numbered horizontal lines of the array.

20. The electronic device according to claim 14 , wherein the substrate includes a plurality of pixel areas arranged in an array, and the plurality of pixel areas comprises a plurality of green pixel areas, a plurality of blue pixel areas, and a plurality of red pixel areas, wherein:
the plurality of red pixel areas, the plurality of green pixel areas, and the plurality of blue pixel areas are arranged in columns of the array respectively.

21. The electronic device according to claim 14 , wherein a first upper surface level of a first upper surface in a second substrate direction of the at least one of the red organic filter, the green organic filter, and the blue organic filter having the inorganic color filter is the same as a second upper surface level of a second surface in the second substrate direction of another of the at least one of the

Assignees

• Choi Ha Kyu
• Moon Chang Rok
• Lee June Taeg
• Kim Hyung Jun
• Samsung Electronics Co Ltd

Inventors

• Choi Ha-Kyu
• Moon Chang-Rok
• Lee June-Taeg
• Kim Hyung-Jun

Classifications

• G02B5/201

  in the form of arrays · CPC title

• G02B5/20 Primary

  Filters (polarising elements G02B5/30) · CPC title

• H01L27/14621

  Electricity · mapped topic

• H04N9/045 Primary

  Electricity · mapped topic

• H10F39/8063

  Microlenses · CPC title