Display apparatus, display module, and electronic device
The resolution of a display apparatus having a light detection function is increased. The display apparatus includes a light-emitting device and a light-emitting and light-receiving device. The light-emitting device includes a first pixel electrode, a first light-emitting layer, and a common electrode; the light-emitting and light-receiving device includes a second pixel electrode, a second light-emitting layer, an active layer, and the common electrode; the active layer includes an organic compound; the first light-emitting layer is positioned between the first pixel electrode and the common electrode; the second light-emitting layer and the active layer are each positioned between the second pixel electrode and the common electrode; the light-emitting device has a function of emitting light of a first color; and the light-emitting and light-receiving device has a function of emitting light of a second color and a function of receiving light of the first color. The light-emitting and light-receiving device functions as both a light-emitting device and a light-receiving device, whereby a pixel can have a light-receiving function without an increase in the number of subpixels included in the pixel. Furthermore, the pixel can be provided with a light-receiving function without a reduction in the resolution of the display apparatus or a reduction in the aperture ratio of each subpixel.
1 . A display apparatus comprising:
a light-emitting device; and
a light-emitting and light-receiving device,
wherein the light-emitting device comprises a first pixel electrode, a first light-emitting layer, and a common electrode,
wherein the light-emitting and light-receiving device comprises a second pixel electrode, a second light-emitting layer, an active layer, and the common electrode,
wherein the first light-emitting layer is positioned between the first pixel electrode and the common electrode,
wherein the second light-emitting layer and the active layer are each positioned between the second pixel electrode and the common electrode,
wherein the first light-emitting layer comprises a first light-emitting material configured to emit light of a first color,
wherein the second light-emitting layer comprises a second light-emitting material configured to emit light of a second color,
wherein a wavelength of the light of the first color is shorter than a wavelength of the light of the second color, and
wherein the active layer is configured to absorb light having a wavelength shorter than the wavelength of the light of the second color.
2 . The display apparatus according to claim 1 , wherein the active layer comprises an organic compound.
3 . The display apparatus according to claim 1 , wherein the second color is red.
4 . A display apparatus comprising:
m (m is an integer greater than or equal to 2) light-emitting devices; and
n (n is an integer greater than m) light-emitting and light-receiving devices,
wherein each of the m light-emitting devices comprises a first pixel electrode, a first light-emitting layer, and a common electrode,
wherein each of the n light-emitting and light-receiving devices comprises a second pixel electrode, a second light-emitting layer, an active layer, and the common electrode,
wherein the first light-emitting layer is positioned between the first pixel electrode and the common electrode,
wherein the second light-emitting layer and the active layer are each positioned between the second pixel electrode and the common electrode,
wherein the first light-emitting layer comprises a first light-emitting material configured to emit light of a first color,
wherein the second light-emitting layer comprises a second light-emitting material configured to emit light of a second color,
wherein a wavelength of the light of the first color is shorter than a wavelength of the light of the second color, and
wherein the active layer is configured to absorb light having a wavelength shorter than the wavelength of the light of the second color.
5 . The display apparatus according to claim 4 , wherein the active layer comprises an organic compound.
6 . The display apparatus according to claim 4 , wherein the second color is red.
7 . The display apparatus according to claim 4 , wherein the m and the n satisfy n=2m.
8 . A display apparatus comprising:
p (p is an integer greater than or equal to 2) first light-emitting devices;
q (q is an integer greater than or equal to 2) second light-emitting devices; and
r (r is an integer greater than p and greater than q) light-emitting and light-receiving devices,
wherein each of the p first light-emitting devices comprises a first pixel electrode, a first light-emitting layer, and a common electrode,
wherein each of the r light-emitting and light-receiving devices comprises a second pixel electrode, a second light-emitting layer, an active layer, and the common electrode,
wherein each of the q second light-emitting devices comprises a third pixel electrode, a third light-emitting layer, and the common electrode,
wherein the first light-emitting layer is positioned between the first pixel electrode and the common electrode,
wherein the second light-emitting layer and the active layer are each positioned between the second pixel electrode and the common electrode,
wherein the third light-emitting layer is positioned between the third pixel electrode and the common electrode,
wherein the first light-emitting layer comprises a first light-emitting material configured to emit light of a first color,
wherein the second light-emitting layer comprises a second light-emitting material configured to emit light of a second color,
wherein the third light-emitting layer comprises a third light-emitting material configured to emit light of a third color,
wherein each of a wavelength of the light of the first color and a wavelength of the light of the third color is shorter than a wavelength of the light of the second color, and
wherein the active layer is configured to absorb light having a wavelength shorter than the wavelength of the light of the second color.
9 . The display apparatus according to claim 8 , wherein the active layer comprises an organic compound.
10 . The display apparatus according to claim 8 , wherein the second color is red.
11 . The display apparatus according to claim 8 , wherein the p and the r satisfy r=2p.
12 . The display apparatus according to claim 8 , wherein the p, the q, and the r satisfy r=p+q.