DETECTION ELEMENT AND A WEARABLE DEVICE OF BIOLOGICAL SUBCUTANEOUS FEATURE INCLUDING THE SAME
A detection element of biological subcutaneous features and a wearable device thereof are provided. The element for detecting biological subcutaneous features has a substrate, a light-detecting semiconductor chip, a grid structure, and a cover. The light-detecting semiconductor chip is located on the substrate for detecting red light or near-infrared light signals. The grid structure including a plurality of opaque light-absorbing blocking walls is located on the light-detecting semiconductor chip for blocking side light and increasing the proportion of near-vertical incident light. The cover is located on the grid structure and serves as a protection lid. The wearable device for detecting biological subcutaneous features has more than one light source of red light or near-infrared light and a plurality of detection elements. The arrangement of the opaque light-absorbing blocking walls that are parallel to each other are substantially parallel to the light-emitting directions of the light source.
1 . A detection element of biological subcutaneous features, comprising:
a substrate;
a light-detecting semiconductor chip is located on the substrate and is configured to detect intensity of red light or near-infrared light;
a grid structure is located on the light-detecting semiconductor chip; and
a cover is located between the grid structure and on the light-detecting semiconductor chip to protect a light incident surface of the detection element.
2 . The detection element of biological subcutaneous features as claimed in claim 1 , wherein the light-detecting semiconductor chip is made of silicon-based semiconductor material or III-V semiconductor material.
3 . The detection element of biological subcutaneous features as claimed in claim 1 , wherein the grid structure is configured to block side light and increase a proportion of near-vertical incident light.
4 . The detection element of biological subcutaneous features as claimed in claim 1 , wherein the grid structure comprises a plurality of opaque blocking walls that are parallel to each other, wherein an aspect ratio of the opaque blocking walls ranges from 1:1 to 100:1.
5 . The detection element of biological subcutaneous features as claimed in claim 1 , wherein the grid structure is composed of a plurality of opaque blocking walls that are parallel to each other, wherein a height of the opaque blocking walls ranges from 100 μm to 1000 μm, a width of the opaque blocking walls ranges from 30 μm to 100 μm, and a spacing of the opaque blocking walls ranges from 50 μm to 600 μm.
6 . The detection element of biological subcutaneous features as claimed in claim 1 , wherein the grid structure is formed directly on the light-detecting semiconductor chip using molding, cutting or etching.
7 . The detection element of biological subcutaneous features as claimed in claim 6 , wherein the grid structure is produced separately and attached onto the light-detecting semiconductor chip using an adhesive material, or affixed onto the light-detecting semiconductor chip with a clasp.
8 . The detection element of biological subcutaneous features as claimed in claim 1 , wherein the grid structure is made of opaque materials such as black resin, black silicone, and silicon substrate.
9 . The detection element of biological subcutaneous features as claimed in claim 1 , wherein the plurality of opaque blocking walls that are parallel to each other of the grid structure have an arrangement design with equal spacing.
10 . The detection element of biological subcutaneous features as claimed in claim 1 , wherein the plurality of opaque blocking walls that are parallel to each other of the grid structure have an arrangement with gradually sparse spacing.
11 . The detection element of biological subcutaneous features as claimed in claim 1 , wherein the plurality of opaque blocking walls that are parallel to each other of the grid structure have an arrangement with gradually dense spacing.
12 . The detection element of biological subcutaneous features as claimed in claim 1 , wherein the cover is made of materials that are substantially transparent to red light or near-infrared light, such as transparent resin, transparent silicone, or transparent glass.
13 . A wearable device for detecting biological subcutaneous features, comprising:
a light source of red light or near-infrared light, and
a plurality of detection elements of biological subcutaneous features;
wherein at least one detection element of biological subcutaneous features has a grid structure, the grid structure has a plurality of opaque blocking walls that are parallel to each other, an arrangement direction of the opaque blocking walls is generally parallel to an emission direction of light emitted by the light source.
14 . The wearable device for detecting biological subcutaneous features as claimed in claim 13 , wherein the plurality of detection elements of biological subcutaneous features are arranged around the light source of red light or near-infrared light.
15 . A wearable device for detecting biological subcutaneous features, comprising:
a light source of red light and near-infrared light, and
a plurality of detection elements of biological subcutaneous features;
wherein at least one detection element of biological subcutaneous features has a grid structure, the grid structure has a plurality of opaque blocking walls that are parallel to each other, an arrangement direction of the opaque blocking walls is generally parallel to an emission direction of light emitted by the light source.
16 . The wearable device for detecting biological subcutaneous features as claimed in claim 15 , wherein the plurality of detection elements of biological subcutaneous features are arranged around the light source of red light and near-infrared light.
17 . A wearable device for detecting biological subcutaneous features, comprising:
a light source of red light or near-infrared light, and
a plurality of detection elements of biological subcutaneous features as claim 1 .
18 . The wearable device for detecting biological subcutaneous features as claimed in claim 17 , wherein the plurality of detection elements of biological subcutaneous features are arranged around the light source of red light or near-infrared light.
19 . A wearable device for detecting biological subcutaneous features, comprising:
a light source of red light and near-infrared light, and
a plurality of detection elements of biological subcutaneous features as claim 1 .
20 . The wearable device for detecting biological subcutaneous features as claimed in claim 19 , wherein the plurality of detection elements of biological subcutaneous features are arranged around the light source of red light and near-infrared light.