Device integrating an image sensor and a display screen
A device includes a display screen and an image sensor. A first electromagnetic shielding layer permeable to light is arranged between active portions of the display screen and active portions of the image sensor.
1. A device comprising: a display screen and an image sensor, wherein a first electromagnetic shielding layer permeable to light is arranged between active portions of the display screen and active portions of the image sensor, wherein the image sensor comprises a fingerprint sensor made of an organic material, and wherein said first electromagnetic shielding layer is made of a transparent conductive polymer.
2. The device according to claim 1 , wherein the first electromagnetic shielding layer is intended to be coupled to a ground of the device.
3. The device according to claim 1 , further comprising a second electromagnetic shielding layer, intended to be coupled to a ground of the device, is arranged between the image sensor and an electronic board.
4. The device according to claim 1 , wherein said first electromagnetic shielding layer has a thickness smaller than 10 μm.
5. The device according to claim 4 , wherein the said electromagnetic shielding layer made of the transparent conductive polymer, is full plate.
6. The device according to claim 1 , wherein said first electromagnetic shielding layer integrates a network of silver nanowires.
7. The device according to claim 1 , wherein a surface area of said first electromagnetic shielding layer corresponds at least to an opposite surface area between the display screen and the image sensor.
8. The device according to claim 1 , wherein said first electromagnetic shielding layer is arranged between an optical filter and a support of the display screen.
9. The device according to claim 1 , wherein said first electromagnetic shielding layer is arranged between an optical filter and an encapsulation layer of the image sensor.
10. The device according to claim 1 , wherein said first electromagnetic shielding layer is integrated to an optical filter interposed between the image sensor and the display screen.
11. The device according to claim 1 , wherein said first electromagnetic shielding layer is formed between an insulating support of the display screen and a substrate from which screen components are formed.
12. The device according to claim 1 , wherein said first electromagnetic shielding layer is formed between a substrate from which screen components are formed and a buffer layer separating the substrate from a semiconductor stack forming transistors.
13. The device according to claim 1 , wherein said first electromagnetic shielding layer is formed between a transparent layer defining electrodes of photodiodes of the image sensor and an overlying encapsulation layer.
14. A cell phone comprising one or more of the devices according to claim claim 1 .
15. A smart watch comprising one or more of the devices according to claim 1 .
16. A touch pad comprising one or more of the devices according to claim claim 1 .
17. A computer comprising one or more of the devices according to claim claim 1 .
18. The device according to claim 1 , wherein the transparent conductive polymer is a mixture of poly(3,4-ethylenedioxythiophene) and sodium polystyrene sulfonate.
19. A device comprising:
a display screen having active portions;
a fingerprint image sensor having active portions; and
a transparent conductive polymer layer arranged between the active portions of the display screen and the active portions of the fingerprint image sensor,
wherein the transparent conductive polymer layer provides electromagnetic shielding between the active portions of the display screen and the active portions of the fingerprint image sensor while being permeable to light to allow the fingerprint image sensor to capture light.