Display apparatus
Methods and devices for a display apparatus. In one aspect, a display apparatus includes a display device including a transparent layer, a display integrated circuit layer including one or more display control circuits, and a shielding layer between the transparent layer and the display integrated circuit layer, a near-infrared (NIR) light source and a visible light source, and a detector device including a detector integrated circuit layer including one or more detector control circuits, where a surface of the detector device contacts a surface of the display device, and a photodetector electrically coupled to at least one detector control circuit and including a detection region positioned to receive NIR light propagating from a front side of the display device to a back side of the display device along a path, where the shielding layer includes a filter region positioned in the path.
1. A display apparatus comprising:
a display device having a front side and a back side opposite the front side, the display device comprising:
a transparent layer;
a display integrated circuit layer comprising one or more display control circuits, wherein each display control circuit of the one or more display control circuits is configured to control a respective pixel of a plurality of pixels of the display device; and
a shielding layer located between the transparent layer and the display integrated circuit layer; and
a near-infrared (NIR) light source configured to direct NIR light to the transparent layer and a visible light source configured to direct visible light to the transparent layer; and
a detector device located at the back side of the display device, the detector device comprising:
a detector integrated circuit layer comprising one or more detector control circuits, wherein a surface of the detector device contacts a surface of the display device; and
a photodetector electrically coupled to at least one detector control circuit of the one or more detector control circuits, the photodetector comprising a detection region, the detection region being positioned to receive NIR light propagating from the front side of the display device to the back side of the display device along a path,
wherein the shielding layer comprises a filter region positioned in the path, and wherein the display integrated circuit layer including the one or more display control circuits is positioned such that the MR light propagating from the front side of the display device to the back side of the display device passes through the one or more display control circuits of the display integrated circuit layer before entering the photodetector.
2. The display apparatus of claim 1 , wherein the photodetector comprises germanium or germanium-silicon.
3. The display apparatus of claim 1 , wherein the NIR light source is electrically coupled to at least one display control circuit of the one or more display control circuits.
4. The display apparatus of claim 1 , wherein the MR light source is electrically coupled to at least one detector control circuit of the one or more detector control circuits.
5. The display apparatus of claim 1 , wherein the one or more display control circuits comprise TFTs, CMOS transistors, or a combination thereof.
6. The display apparatus of claim 1 , wherein the one or more detector control circuits comprise TFTs, CMOS transistors, or a combination thereof.
7. The display apparatus of claim 1 , wherein the visible light source comprises an array of visible organic light-emitting diodes, visible micro-light emitting diodes, or a combination thereof.
8. The display apparatus of claim 1 , wherein the NIR light source comprises an array of NIR organic light-emitting diodes, NIR micro-light emitting diodes, or a combination thereof.
9. The display apparatus of claim 1 , wherein the NIR light source is integrated with the display device.
10. The display apparatus of claim 1 , wherein the NIR light source is integrated with the detector device.
11. The display apparatus of claim 1 , further comprising a growth or a bonding interface between the display device and the detector device.
12. The display apparatus of claim 1 , wherein the photodetector comprises a plurality of pixels, and wherein each pixel of the plurality of pixels comprises at least two switches configured to convert the NIR light propagating from the front side of the display device to the back side of the display device to an electrical signal.
13. A display apparatus comprising:
a display device having a front side and a back side opposite the front side, the display device comprising:
a transparent layer;
a shielding layer arranged between the transparent layer and the back side of the display device, the shielding layer comprising a filter region;
a NIR light source configured to direct NIR light to the transparent layer; and
a detector device comprising:
a detector integrated circuit layer comprising one or more detector control circuits; and
a photodetector electrically coupled to at least one detector control circuit of the one or more detector control circuits, wherein the detector integrated circuit layer is arranged between the photodetector and the display device, such that NIR light propagating from the front side of the display device to the back side of the display device enters the photodetector through the one or more detector control circuits of the detector integrated circuit layer.
14. The display apparatus of claim 13 , wherein the display device further comprises a display integrated circuit layer comprising one or more display control circuits.
15. The display apparatus of claim 14 , wherein the display device further comprises a visible light source electrically coupled to at least one display control circuit of the one or more display control circuits, wherein the visible light source is configured to direct visible light to the transparent layer.
16. The display apparatus of claim 15 , wherein the NIR light directed by NIR light source to the transparent layer is not overlapped with visible light directed by the visible light source to the transparent layer within the transparent layer.
17. The display apparatus of claim 13 , wherein a detection region of the photodetector is aligned with the filter region in a vertical direction.
18. The display apparatus of claim 13 , wherein the NIR light source is integrated with the display device or the detector device.
19. The display apparatus of claim 13 , further comprising a backlight module under the display device, wherein the display device further comprises a liquid crystal layer below the transparent layer, wherein the detector device is between the display device and the backlight module.
20. The display apparatus of claim 13 , wherein the photodetector comprises a plurality of pixels, and wherein each pixel of the plurality of pixels comprises at least two switches configured to convert the NIR light propagating from the front side of the display device to the back side of the display device to an electrical signal.