Sensor embedded display panel and electronic device
A sensor embedded display panel includes a substrate, a light emitting element on the substrate and including an emission layer; and a photoelectric element on the substrate. The photoelectric element includes a light absorbing layer. The light absorbing layer at least partially overlaps the emission layer in a horizontal direction extending in parallel to an upper surface of the substrate. The light emitting element and the photoelectric element each include a separate portion of a first common auxiliary layer that extends on tops of the emission layer and the light absorbing layer and a separate portion of a second common auxiliary layer that extends on bottoms of the emission layer and the light absorbing layer. The photoelectric element further includes an auxiliary layer that has a thickness corresponding to one of a red wavelength spectrum, a green wavelength spectrum, or a blue wavelength spectrum.
1. A sensor embedded display panel, comprising:
a substrate;
a light emitting element on the substrate, the light emitting element including an emission layer; and
a photoelectric element on the substrate, the photoelectric element including a light absorbing layer, the light absorbing layer at least partially overlapping the emission layer in a horizontal direction extending in parallel to an upper surface of the substrate,
wherein each of the light emitting element and the photoelectric element include
a separate portion of a first common auxiliary layer that extends on both a top of the emission layer and a top of the light absorbing layer, and
a separate portion of a second common auxiliary layer that extends on both a bottom of the emission layer and a bottom of the light absorbing layer,
wherein the photoelectric element includes a first sensor pixel configured to convert incident light of a red wavelength spectrum into a first electrical signal, a second sensor pixel configured to convert incident light of a green wavelength spectrum into a second electrical signal, and a third sensor pixel configured to convert incident light of a blue wavelength spectrum into a third electrical signal, and
wherein the first sensor pixel includes a first auxiliary layer that has a first thickness, the second sensor pixel includes a second auxiliary layer that has a second thickness, and the third sensor pixel includes a third auxiliary layer that has a third thickness, the second thickness smaller than the first thickness, the third thickness smaller than the second thickness.
2. The sensor embedded display panel of claim 1 , wherein
the light absorbing layer is configured to absorb incident light of a combination of the red wavelength spectrum, the green wavelength spectrum, and the blue wavelength spectrum.
3. The sensor embedded display panel of claim 1 , wherein
each of the first auxiliary layer, the second auxiliary layer, and the third auxiliary layer is between the first common auxiliary layer and the light absorbing layer.
4. The sensor embedded display panel of claim 1 , wherein
each of the first auxiliary layer, the second auxiliary layer, and the third auxiliary layer is between the second common auxiliary layer and the light absorbing layer.
5. The sensor embedded display panel of claim 1 , wherein
the first sensor pixel includes a first color filter configured to selectively transmit incident light of the red wavelength spectrum, the second sensor pixel includes a second color filter configured to selectively transmit incident light of the green wavelength spectrum, and the third sensor pixel includes a third color filter configured to selectively transmit incident light of the blue wavelength spectrum.
6. The sensor embedded display panel of claim 1 , wherein
the light emitting element and the photoelectric element each further include
a separate portion of a common electrode that is configured to apply a common voltage to the light emitting element and the photoelectric element, and
a pixel electrode facing the common electrode, and
the first common auxiliary layer is below the common electrode, and
the second common auxiliary layer is on the pixel electrode.
7. The sensor embedded display panel of claim 1 , wherein
the sensor embedded display panel includes a display area configured to display an image and a non-display area that is a portion of a total area of the sensor embedded display panel that excludes the display area, and
the photoelectric element is located in the non-display area.
8. The sensor embedded display panel of claim 7 , further comprising:
a plurality of first sub-pixels configured to display a red color and including a first light emitting element;
a plurality of second sub-pixels configured to display a green color and including a second light emitting element; and
a plurality of third sub-pixels configured to display a blue color and including a third light emitting element,
wherein the first sub-pixels, the second sub-pixels, and the third sub-pixels are located in the display area.
9. The sensor embedded display panel of claim 8 , wherein
the photoelectric element is between at least two of
a first sub-pixel of the plurality of first sub-pixels,
a second sub-pixel of the plurality of second sub-pixels, or
a third sub-pixel of the plurality of third sub-pixels.
10. The sensor embedded display panel of claim 8 , further comprising:
a plurality of fourth sub-pixels including a fourth light emitting element configured to emit light of an infrared wavelength spectrum,
wherein the photoelectric element is configured to further absorb incident light of the infrared wavelength spectrum.
11. The sensor embedded display panel of claim 1 , wherein
the light absorbing layer includes an organic material.
12. The sensor embedded display panel of claim 1 , wherein
the emission layer includes an organic light emitting material, a quantum dot, a perovskite, and any combination thereof.
13. A display device including the sensor embedded display panel according to claim 1 .
14. The sensor embedded display panel of claim 1 , wherein the emission layer is directly between the first common auxiliary layer and the second common auxiliary layer, such that the first common auxiliary layer is directly above the emission layer and the second common auxiliary layer is directly beneath the emission layer.
15. An image sensor, comprising:
a substrate; and
a photoelectric element on the substrate, the photoelectric element including a light absorbing layer that is configured to absorb light of a combination of a red wavelength spectrum, a green wavelength spectrum, and a blue wavelength spectrum,
wherein the photoelectric element includes
a first common auxiliary layer at a top of the light absorbing layer, and
a second common auxiliary layer at a bottom of the light absorbing layer,
wherein the photoelectric element further includes a first sensor pixel configured to convert incident light of the red wavelength spectrum into a first electrical signal, a second sensor pixel configured to convert incident light of the green wavelength spectrum into a second electrical signal, and a third sensor pixel configured to convert incident light of the blue wavelength spectrum into a third electrical signal, and
wherein the first sensor pixel includes a first auxiliary layer that has a first thickness, the second sensor pixel includes a second auxiliary layer that has a second thickness, and the third sensor pixel includes a third auxiliary layer that has a third thickness, the second thickness smaller than the first thickness, the third thickness smaller than the second thickness.
16. The image sensor of claim 15 , wherein
each of the first auxiliary layer, the second auxiliary layer, and the third auxiliary layer is between the first common auxiliary layer and the light absorbing layer.
17. The image sensor of claim 15 , wherein
each of the first auxiliary layer, the second auxiliary layer, and the third auxiliary layer is between the second common auxiliary layer and the light absorbing layer.
18. The image sensor of claim 15 , wherein
the first sensor pixel includes a first color filter configured to selectively transmit incident light of the red wavelength spectrum, the second sensor pixel includes a second color filter configured to selectively transmit incident light of the green wavelength spectrum, and the third sensor pixel includes a third color filter configured to selectively transmit incident light of the blue wavelength spectrum.