Display panels and display apparatuses having the same
View Patent ↗A display panel ( 100 ) and a display apparatus ( 1000 ) having the same. The display panel ( 100 ) is provided with a preset area ( 101 ), a transmitting sensor ( 201 ) and a receiving sensor ( 202 ) of a time-of-flight device ( 200 ) are adapted to be provided on a non-display side of the preset area ( 101 ), and light emitted from the transmitting sensor ( 201 ) is adapted to be transmitted from the preset area ( 101 ) to a display side of the display panel ( 100 ), and be reflected by a to-be-detected object on the display side back to a non-display side of the display panel ( 100 ), so as to be received by the receiving sensor ( 202 ). The display panel ( 100 ) includes a substrate layer ( 11 ), an organic light-emitting device layer ( 12 ), and an anti-reflection layer ( 13 ), where the organic light-emitting device layer ( 12 ) is provided on a display side of the substrate layer ( 11 ); and the anti-reflection layer ( 13 ) includes one or more layers and is provided between the substrate layer ( 11 ) and the organic light-emitting device layer ( 12 ), and at least part of the anti-reflection layer ( 13 ) is disposed opposite to the preset area ( 101 ) in a thickness direction of the display panel ( 100 ).
1. A display panel, wherein the display panel is provided with a preset area, a transmitting sensor and a receiving sensor of a time-of-flight device are adapted to be provided on a non-display side of the preset area, and light emitted from the transmitting sensor is adapted to be transmitted from the preset area to a display side of the display panel, and be reflected by a to-be-detected object on the display side back to a non-display side of the display panel, so as to be received by the receiving sensor, the display panel comprising:
a substrate layer;
an organic light-emitting device layer provided on a display side of the substrate layer; and
an anti-reflection layer comprising one or more anti-reflection layers and provided between the substrate layer and the organic light-emitting device layer, at least part of the anti-reflection layer being disposed opposite to the preset area in a thickness direction of the display panel, wherein at least one of the one or more anti-reflection layers is made of polyimide.
2. The display panel according to claim 1 , wherein one of the one or more anti-reflection layers is a preset thin film layer, and the preset thin film layer is disposed immediately adjacent to the substrate layer.
3. The display panel according to claim 2 , wherein the display panel comprises only the preset thin film layer as the anti-reflection layer, and the display panel further comprises a buffer layer disposed immediately adjacent to a display side of the preset thin film layer.
4. The display panel according to claim 3 , wherein the light emitted from the transmitting sensor has a wavelength of 940 nm, the substrate layer comprises polyimide and has a refractive index of 1.945, the buffer layer has a refractive index of 1.467, the preset thin film layer has a refractive index of 1.625 or 1.691, and the preset thin film layer has a thickness of 235 nm.
5. The display panel according to claim 1 , wherein a projection of at least one of the one or more anti-reflection layers in the thickness direction of the display panel completely covers the substrate layer.
6. The display panel according to claim 1 , wherein a projection of at least one of the one or more anti-reflection layers in the thickness direction of the display panel exactly covers the preset area.
7. The display panel according to claim 1 , wherein a refractive index n x of the anti-reflection layer satisfies:
n−0.2≤n x ≤n+0.2, wherein n=(n 1 ×n 2 ){circumflex over ( )}(½), n 1 is a refractive index of a film layer immediately adjacent to a non-display side of a corresponding anti-reflection layer, and n 2 is a refractive index of a film layer immediately adjacent to a display side of the corresponding anti-reflection layer.
8. The display panel according to claim 1 , wherein a thickness d x of the anti-reflection layer satisfies:
d−50 nm≤d x ≤d+50 nm, wherein d x =λ/4, and λ is a wavelength of the light emitted from the transmitting sensor.
9. The display panel according to claim 1 , wherein an extinction coefficient k of the anti-reflection layer satisfies: k≤1.
10. The display panel according to claim 1 , wherein the organic light-emitting device layer comprises an electron transport layer, and at least one of the one or more anti-reflection layers is made of the same material as that of the electron transport layer.
11. A display apparatus, comprising:
a display panel provided with a preset area; and
a time-of-flight device comprising a transmitting sensor and a receiving sensor both provided on a non-display side of the preset area, wherein light emitted from the transmitting sensor is transmitted from the preset area to a display side of the display panel, and is reflected by a to-be-detected object on the display side back to a non-display side of the display panel, so as to be received by the receiving sensor,
wherein the display panel comprises:
a substrate layer;
an organic light-emitting device layer provided on a display side of the substrate layer; and
an anti-reflection layer comprising one or more anti-reflection layers and provided between the substrate layer and the organic light-emitting device layer, at least part of the anti-reflection layer being disposed opposite to the preset area in a thickness direction of the display panel, wherein at least one of the one or more anti-reflection layers is made of polyimide.
12. The display apparatus according to claim 11 , wherein one of the one or more anti-reflection layers is a preset thin film layer, and the preset thin film layer is disposed immediately adjacent to the substrate layer.
13. The display apparatus according to claim 12 , wherein the display panel comprises only the preset thin film layer as the anti-reflection layer, and the display panel further comprises a buffer layer disposed immediately adjacent to a display side of the preset thin film layer.
14. The display apparatus according to claim 13 , wherein the light emitted from the transmitting sensor has a wavelength of 940 nm, the substrate layer comprises polyimide and has a refractive index of 1.945, the buffer layer has a refractive index of 1.467, the preset thin film layer has a refractive index of 1.625 or 1.691, and the preset thin film layer has a thickness of 235 nm.
15. The display apparatus according to claim 11 , wherein a projection of at least one of the one or more anti-reflection layers in the thickness direction of the display panel completely covers the substrate layer.
16. The display apparatus according to claim 11 , wherein a projection of at least one of the one or more anti-reflection layers in the thickness direction of the display panel exactly covers the preset area.
17. The display apparatus according to claim 11 , wherein a refractive index n x of the anti-reflection layer satisfies:
n−0.2≤n x ≤n+0.2, wherein n=(n 1 ×n 2 ){circumflex over ( )}(½), n 1 is a refractive index of a film layer immediately adjacent to a non-display side of a corresponding anti-reflection layer, and n 2 is a refractive index of a film layer immediately adjacent to a display side of the corresponding anti-reflection layer.
18. The display apparatus according to claim 11 , wherein a thickness d x of the anti-reflection layer satisfies:
d−50 nm≤d x ≤d+50 nm, wherein d x =λ/4, and λ is a wavelength of the light emitted from the transmitting sensor.
19. The display apparatus according to claim 11 , wherein an extinction coefficient k of the anti-reflection layer satisfies: k≤1.