Image capture apparatus, electronic apparatus, and in-cell display apparatus

Patent metadata

Field	Value
Publication number	US-11256122-B2
Application number	US-202016892703-A
Country	US
Kind code	B2
Filing date	Jun 4, 2020
Priority date	Jun 14, 2018
Publication date	Feb 22, 2022
Grant date	Feb 22, 2022

Abstract

An image capture apparatus is illustrated, which has an image capture element and an optical component layer. The image capture element has a plurality of pixel regions. The optical component layer comprises a microstructure layer and a spatial filter formed on the image capture element in a first direction. The microstructure layer has micro lenses formed on a surface of the microstructure layer. The spatial filter has at least one translucent substrate and at least one light shielding structure, and the light shielding structure has a light absorbing/reflective layer and a reflective layer in the first direction stacked to each other. The light absorbing/reflective layer is another one light reflective layer or a light absorbing layer.

First claim

What is claimed is:

1. An image capture apparatus, comprising:
an image capture element having a plurality of pixel regions; and
an optical component layer, comprising a microstructure layer and a spatial filter formed on the image capture element in a first direction, wherein the microstructure layer has a plurality of micro lenses formed on a surface of the microstructure layer, and the spatial filter comprises:
at least one translucent substrate; and
at least one light shielding structure, the light shielding structures is formed in the translucent substrate, wherein the light shielding structure comprises a light absorbing/reflective layer and a reflective layer in the first direction stacked to each other;
wherein the light absorbing/reflective layer has a plurality of first openings in a second direction perpendicular to the first direction, the reflective layer has a plurality of second openings in the second direction, each of the first openings is corresponding to one of the pixel regions, one of the second openings and one of the micro lenses in the first direction, wherein the light absorbing/reflective layer is another one light reflective layer or a light absorbing layer;
wherein a distance HC between the reflective layer and the light absorbing/reflective layer in the first direction satisfies “HC≤π((WM/2) 2 +H 2 )/2H”, WM is a width or diameter of the micro lens in the second direction, H is a thickness of the micro lens MR in the first direction, and HC is larger than or equal to 0.

2. The image capture apparatus of claim 1 , wherein the light absorbing/reflective layer is formed on or under the reflective layer, the first opening has a width W 1 in the second direction, the second opening has a width W 2 in the second direction, and the first opening and the second opening satisfy “W 2 ≤W 1 ”.

3. The image capture apparatus of claim 1 , wherein the first opening and the second opening satisfy “0.2W 1 ≤W 2 ≤0.8W 1 ”.

4. The image capture apparatus of claim 1 , wherein the distance HC between the reflective layer and the light absorbing/reflective layer in the first direction satisfies “HC≤π((WM/2) 2 +H 2 )/4H”.

5. The image capture apparatus of claim 1 , wherein the reflective layer and the light absorbing/reflective layer are formed by one or combination of a deposition process, an etching process and photography process.

6. The image capture apparatus of claim 1 , wherein the reflective layer and the light absorbing/reflective layer are adhered to each other.

7. The image capture apparatus of claim 1 , further comprising:
a cover plate, formed on the microstructure layer; and
a surface plasma resonance layer, formed on the cover plate.

8. The image capture apparatus of claim 1 , wherein the light absorbing/reflective layer is the light absorbing layer, the light absorbing layer is formed by a structure of light absorbing walls and yet another one reflective layer surrounded by the light absorbing walls in directions perpendicular to the first direction.

9. The image capture apparatus of claim 1 , wherein the light absorbing/reflective layer is the other one reflective layer, and the light shielding structure further comprises at least one light absorbing wall formed on one edge side of the translucent substrate in the second direction.

10. The image capture apparatus of claim 1 , the light absorbing/reflective layer is the other one reflective layer, and the light shielding structure further comprises a light absorbing layer formed between the two reflective layers in the first direction.

11. The image capture apparatus of claim 1 , wherein an area of the first opening and an area of the second opening are less than a projection area of the micro lens and a sensing area of the pixel regions, and the sensing area of the pixel regions is larger than the projection area of the micro lens, wherein the sensing area of the pixel regions is an area formed by centers of the four adjacent pixel regions.

12. The image capture apparatus of claim 1 , further comprising:
a first adhesion layer and a second adhesion layer; and
a frame, wherein bottom sides of the frame are adhered to top sides of the microstructure layer via the second adhesion layer, top sides of the frame are adhered to bottom sides of a cover plate via the first adhesion layer, and projection of the second adhesion layer on the cover plate falls within the projection of the frame on the cover plate.

13. An electronic apparatus, comprising:
a hardware circuit; and
at least one image capture apparatus, electrically connected to the hardware circuit and comprising:
an image capture element having a plurality of pixel regions; and
an optical component layer, comprising a microstructure layer and a spatial filter formed on the image capture element in a first direction, wherein the microstructure layer has a plurality of micro lenses formed on a surface of the microstructure layer, and the spatial filter comprises:
at least one translucent substrate; and
at least one light shielding structure, the light shielding structures is formed in the translucent substrate, wherein the light shielding structure comprises a light absorbing/reflective layer and a reflective layer in the first direction stacked to each other;
wherein the light absorbing/reflective layer has a plurality of first openings in a second direction perpendicular to the first direction, the reflective layer has a plurality of second openings in the second direction, each of the first openings is corresponding to one of the pixel regions, one of the second openings and one of the micro lenses in the first direction, wherein the light absorbing/reflective layer is another one light reflective layer or a light absorbing layer;
wherein a distance HC between the reflective layer and the light absorbing/reflective layer in the first direction satisfies “HC≤π((WM/2) 2 +H 2 )/2H”, WM is a width or diameter of the micro lens in the second direction, H is a thickness of the micro lens MR in the first direction, and HC is larger than or equal to 0.

14. An in-cell display apparatus, comprising:
a plurality of image capture apparatuses comprised in a thin film transistor layer, and each of the image capture apparatuses comprising:
an image capture element having a plurality of pixel regions; and
an optical component layer, comprising a spatial filter disposed on the image capture element in a first direction, and the spatial filter comprises:
at least one translucent substrate; and
at least one light shielding structure, the light shielding structures is formed in the translucent substrate, wherein the light shielding structure comprises a light absorbing/reflective layer and a reflective layer in the first direction stacked to each other;
wherein the light absorbing/reflective layer is another one light reflective layer or a light absorbing layer.

15. The in-cell display apparatus of claim 14 , further comprising:
a backlight module;
the thin film transistor layer, disposed on the backlight module;
a liquid crystal layer, disposed on the thin film transistor layer and having liquid crystals controlled by transistors of the thin film transistor layer; and
a color filter layer, having a plurality of color filter film disposed corresponding to the liquid crystals.

16. The in-cell display apparatus of claim 14 , wherein the optical component layer further comprises a microstructure layer which has a plurality of micro lenses formed on a surface of the microstructure layer, wherein the light absorbing/reflective layer has a plurality of first openin

Assignees

• Gingy Technology Inc

Inventors

• Lin Hao-Xiang
• Wu Jen-Chieh
• Yang Kuo-Wen
• Yu Chih-Chiang

Classifications

• G02B5/008

  Surface plasmon devices (diffractive gratings with a pitch less than or comparable to the wavelength G02B5/1809; surface plasmons in integrated optics G02B6/1226; optical analysis of materials by means of surface plasmons G01N21/553) · CPC title

• G02F1/13338 Primary

  Input devices, e.g. touch panels · CPC title

• G02B5/003

  Light absorbing elements · CPC title

• G02F1/13318 Primary

  Circuits comprising a photodetector · CPC title

• G02F1/133514

  Colour filters · CPC title