Display device
View Patent ↗A display device includes a light transmitting substrate in which pixels are arranged, the pixels having a light transmitting region that transmits external light and a light emitting region in which a light emitting element is disposed; a first light blocking layer that is disposed in the light emitting region and blocks the external light; a thin film transistor that is disposed on the first light blocking layer and controls a light emission of the light emitting element; a first insulating layer that covers an active layer of the thin film transistor; a second light blocking layer that is disposed on the first insulating layer so as to cover the thin film transistor and blocks the external light; and a first light blocking wall that is connected to the first light blocking layer and the second light blocking layer and blocks the external light.
1. A display device, comprising:
a light transmitting substrate in which pixels are arranged, each of the pixels having a light transmitting region that transmits external light and a light emitting region in which a light emitting element is disposed;
a first light blocking layer that is disposed in the light emitting region and blocks the external light;
a thin film transistor that is positioned above the first light blocking layer, is arranged on a side opposite to the light transmitting substrate of the first light blocking layer, and controls a light emission of the light emitting element;
a first insulating layer that covers an active layer of the thin film transistor;
a second light blocking layer that is positioned above the first insulating layer, and is arranged on a side opposite to the light transmitting substrate of the first insulating layer so as to cover the thin film transistor and blocks the external light; and
a first light blocking wall that extends from the second light blocking layer towards the light transmitting substrate to directly connect the first light blocking layer and the second light blocking layer and block the external light.
2. The display device according to claim 1 , wherein the first light blocking wall covers a side surface of the first insulating layer positioned on a side of the light transmitting region in the pixel.
3. The display device according to claim 2 , wherein:
the light transmitting substrate includes wiring connected to a drain or a source of the thin film transistor;
the wiring is disposed on the first insulating layer that is disposed on the first light blocking layer; and
the second light blocking layer covers the wiring.
4. The display device according to claim 3 , further comprising:
a second light blocking wall that is connected to the first light blocking layer and the second light blocking layer, covers a side surface of the first insulating layer on which the wiring is disposed, and blocks the external light.
5. The display device according to claim 4 , wherein the second light blocking layer and the second light blocking wall are integrally formed.
6. The display device according to claim 4 , further comprising:
a third light blocking wall that is connected to the first light blocking layer and the second light blocking layer, covers a side surface of the first insulating layer opposite to the first light blocking wall, and blocks the external light,
wherein the light transmitting region of the pixel is surrounded by the first light blocking wall and the second light blocking wall in the pixel, and surrounded by the third light blocking wall in a pixel adjacent to the pixel.
7. The display device according to claim 2 , further comprising:
a third light blocking wall that is connected to the first light blocking layer and the second light blocking layer, covers a side surface of the first insulating layer opposite to the first light blocking wall, and blocks the external light.
8. The display device according to claim 7 , wherein the second light blocking layer and the third light blocking wall are integrally formed.
9. The display device according to claim 2 , wherein:
the first light blocking layer includes a metal, and
the first light blocking wall covers an end portion of the first light blocking layer.
10. The display device according to claim 2 , wherein the second light blocking layer includes at least one of (i) a second insulating layer that is disposed on the first insulating layer or (ii) a defining layer that is disposed on the second insulating layer and includes an opening in which a light emitting layer of the light emitting element is provided.
11. The display device according to claim 1 , wherein the first light blocking wall penetrates the first insulating layer in the light emitting region.
12. The display device according to claim 11 , further comprising:
a fourth light blocking layer that is connected to the first light blocking wall, and surrounds the active layer of the thin film transistor together with the first light blocking wall.
13. The display device according to claim 1 , wherein the second light blocking layer and the first light blocking wall are integrally formed.
14. The display device according to claim 1 , further comprising:
a driver circuit that is disposed around a display region of the light transmitting substrate on which the pixels are arranged and drives the thin film transistor; and
a fifth light blocking wall that is disposed on the light transmitting substrate, surrounds the display region and the driver circuit, and blocks the external light.