Image capturing module and electrical apparatus
An image capturing module including a substrate, a plurality of light emitting devices, a sensor, and a transparent colloid curing layer is provided. The light emitting devices and the sensor are disposed on the substrate and are respectively electrically connected to the substrate. The transparent colloid curing layer is disposed on the substrate and covers the sensor and the light emitting devices. At least one trench is provided at a side of the transparent colloid curing layer opposite to the sensor. The at least one trench is located between the sensor and the light emitting devices, and a depth of the at least one trench is less than a thickness of the transparent colloid curing layer. An electrical apparatus is also provided.
1. An image capturing module, comprising:
a substrate;
a plurality of light emitting devices, disposed on the substrate and electrically connected to the substrate;
a sensor, disposed on the substrate and electrically connected to the substrate; and
a transparent colloid curing layer, disposed on the substrate and covering the sensor and the light emitting devices, wherein at least one trench is formed on a surface of the transparent colloid curing layer opposite to the sensor, the at least one trench is located between the sensor and the light emitting devices, and a depth of the at least one trench is less than a thickness of the transparent colloid curing layer.
2. The image capturing module as claimed in claim 1 , further comprising:
a plurality of adhesive layers, respectively disposed between the light emitting devices and the substrate and between the sensor and the substrate.
3. The image capturing module as claimed in claim 1 , wherein the at least one trench has two inclined surfaces, and a supplementary angle of an angle included between one of the two inclined surfaces that is closer to the corresponding light emitting devices and the surface of the transparent colloid curing layer opposite to the sensor is in a range from 30 degrees to 45 degrees.
4. The image capturing module as claimed in claim 3 , wherein the at least one trench is a V-shaped trench, the at least one trench is filled with a transparent material, and a refractive index of the transparent material is greater than a refractive index of the transparent colloid curing layer.
5. The image capturing module as claimed in claim 1 , wherein the at least one trench is a U-shaped trench, the depth of the at least one trench is greater than a distance from light emitting surfaces of the respective light emitting devices to the surface of the transparent colloid curing layer opposite to the sensor.
6. The image capturing module as claimed in claim 5 , wherein a width of the at least one trench, a distance from one of the light emitting devices corresponding to the at least one trench to the at least one trench, and a distance from the sensor to the at least one trench are all one third of a distance from the one of the light emitting devices corresponding to the at least one trench to the sensor.
7. The image capturing module as claimed in claim 1 , wherein the at least one trench is in a shape of an inverted trapezoid, the depth of the at least one trench is less than a distance from light emitting surfaces of the respective light emitting devices to the surface of the transparent colloid curing layer opposite to the sensor.
8. The image capturing module as claimed in claim 1 , wherein the at least one trench is a U-shaped trench or a trench in a shape of an inverted trapezoid, the at least one trench is filled with a transparent material, and a refractive index of the transparent material is less than a refractive index of the transparent colloid curing layer.
9. The image capturing module as claimed in claim 1 , further comprising:
an optical collimator, disposed on the sensor and located between the transparent colloid curing layer and the sensor.
10. The image capturing module as claimed in claim 1 , further comprising:
a plurality of connecting wires, respectively connecting the sensor and the substrate and connecting the light emitting devices and the substrate; and
at least one wall structure, surrounding the sensor and the light emitting devices.
11. The image capturing module as claimed in claim 1 , further comprising:
a cover plate, disposed on the transparent colloid curing layer and covering the at least one trench, wherein a light transmitting medium in the at least one trench includes air.
12. The image capturing module as claimed in claim 1 , wherein the substrate has a metal ring located between an upper surface and a lower surface of the substrate and surrounding a sensing region of the sensor.
13. An electrical apparatus, comprising:
an image capturing module, comprising:
a substrate;
a plurality of light emitting devices, disposed on the substrate and electrically connected to the substrate;
a sensor, disposed on the substrate and electrically connected to the substrate; and
a transparent colloid curing layer, disposed on the substrate and covering the sensor and the light emitting devices, wherein at least one trench is formed on a surface of the transparent colloid curing layer opposite to the sensor, the at least one trench is located between the sensor and the light emitting devices, and a depth of the at least one trench is less than a thickness of the transparent colloid curing layer;
an infrared band-pass filter layer, disposed on the transparent colloid curing layer; and
a display device, disposed on the infrared band-pass filter layer.
14. The electrical apparatus as claimed in claim 13 , wherein the image capturing module further comprises a plurality of adhesive layers, and the adhesive layers are respectively disposed between the light emitting devices and the substrate and between the sensor and the substrate.
15. The electrical apparatus as claimed in claim 13 , wherein the at least one trench has two inclined surfaces, and a supplementary angle of an angle included between one of the two inclined surfaces that is closer to the corresponding light emitting devices and the surface of the transparent colloid curing layer opposite to the sensor is in a range from 30 degrees to 45 degrees.
16. The electrical apparatus as claimed in claim 15 , wherein the at least one trench is a V-shaped trench, the at least one trench is filled with a transparent material, and a refractive index of the transparent material is greater than a refractive index of the transparent colloid curing layer.
17. The electrical apparatus as claimed in claim 13 , wherein the at least one trench is a U-shaped trench, the depth of the at least one trench is greater than a distance from light emitting surfaces of the respective light emitting devices to the surface of the transparent colloid curing layer opposite to the sensor.
18. The electrical apparatus as claimed in claim 17 , wherein a width of the at least one trench, a distance from one of the light emitting devices corresponding to the at least one trench to the at least one trench, and a distance from the sensor to the at least one trench are all one third of a distance from the one of the light emitting devices corresponding to the at least one trench to the sensor.
19. The electrical apparatus as claimed in claim 13 , wherein the at least one trench is in a shape of an inverted trapezoid, the depth of the at least one trench is less than a distance from light emitting surfaces of the respective light emitting devices to the surface of the transparent colloid curing layer opposite to the sensor.
20. The electrical apparatus as claimed in claim 13 , wherein the at least one trench is a U-shaped trench or a trench in a shape of an inverted trapezoid, the at least one trench is filled with a transparent material, and a refractive index of the transparent material is less than a refractive index of the transparent colloid curing layer.
21. The electrical apparatus as claimed in claim 13 , wherein the image capturing module further comprises an optical collimator disposed on the sensor and located between the transparent colloid curing layer and the sensor.
22. The electrical apparatus as claimed in claim 13 , wherein the image capturing module further comprises a plurality of connecting wires and at least one wall structure, the connecting wires respectively connect the sensor and the substrate and connect the light emitting devices and the substrate, and the at least one wall structure surrounds the sensor and the light emitting devices.
23. The electrical apparatus as claimed in claim 13 , wherein the light emitting devices are infrared light emitting devices.
24. The electrical apparatus as claimed in claim 13 , further comprising:
a hard coating layer, disposed between the display device and the infrared band-pass filter layer.
25. The electrical apparatus as claimed in claim 13 , wherein the infrared band-pass filter layer allows a light beam whose wavelength is within a range from 800 nm to 940 nm to pass through, and filters out a light beam whose wavelength is not within the range from 800 nm to 940 nm.
26. The electrical apparatus as claimed in claim 13 , wherein the substrate has a metal ring located between an upper surface and a lower surface of the substrate and surrounding a sensing region of the sensor.