Display device and method of manufacturing the same
A display device includes: a base layer; a circuit layer on the base layer; and an element layer on the circuit layer and comprising a plurality of light emitting elements and a plurality of light receiving elements, the element layer including: a pixel definition layer having a light emitting opening defined therethrough to correspond to the light emitting elements and a light receiving opening defined therethrough to correspond to the light receiving elements; a disconnected spacer layer adjacent to the light receiving opening on the pixel definition layer; and a common layer commonly in the light emitting elements and the light receiving elements and partially disconnected around the light receiving elements due to the disconnected spacer layer.
1 . A display device comprising:
a base layer;
a circuit layer on the base layer; and
an element layer on the circuit layer and comprising light-emitting elements and light-receiving elements, the element layer comprising:
a pixel definition layer having light-emitting opening defined therethrough to correspond to the light-emitting elements and a light-receiving opening defined therethrough to correspond to the light-receiving elements;
a disconnected spacer layer adjacent to the light-receiving opening on the pixel definition layer, and comprising disconnected spacers spaced apart from each other and at least partially surrounding the light-receiving opening in plan view; and
a common layer commonly in the light-emitting elements and the light-receiving elements and partially disconnected around the light-receiving elements due to the disconnected spacers and not disconnected in an area between the disconnected spacers.
2 . The display device of claim 1 , wherein the common layer comprises a common cathode electrode commonly connected to the light-emitting elements and the light-receiving elements, and partially disconnected due to the disconnected spacer layer around the light-receiving elements.
3 . The display device of claim 2 , wherein the common layer further comprises a hole control layer and an electron control layer, which are between the pixel definition layer and the common cathode electrode.
4 . The display device of claim 1 , wherein the light-emitting elements comprise red light-emitting elements, green light-emitting elements, and blue light-emitting elements, each of the light-receiving elements being between two green light-emitting elements adjacent to each other in a first direction and between one red light-emitting element and one blue light-emitting element that is adjacent to one red light-emitting element in a second direction perpendicular to the first direction.
5 . The display device of claim 4 , wherein the disconnected spacer layer comprises:
a first disconnected spacer between a first side of each one of the light-receiving elements and one of the two green light-emitting elements; and
a second disconnected spacer between a second side of the one of the light-receiving elements and another of the two green light-emitting elements, and
wherein the first disconnected spacer is spaced apart from the second disconnected spacer in the first direction.
6 . The display device of claim 5 , wherein the common layer comprises a connection portion that electrically connects first common portions respectively corresponding to the light-emitting elements to second common portions respectively corresponding to the light-receiving elements, and
wherein the connection portion comprises:
a first connection portion adjacent to one of the red light-emitting elements and between the first and second disconnected spacers; and
a second connection portion adjacent to one of the blue light-emitting elements and between the first and second disconnected spacers.
7 . The display device of claim 4 , wherein the disconnected spacer layer comprises:
a first disconnected spacer between a first side of one of the light-receiving elements and the one of the red light-emitting elements; and
a second disconnected spacer between a second side of the one of the light-receiving elements and the one of the blue light emitting element light-emitting elements, and
wherein the first disconnected spacer is spaced apart from the second disconnected spacer in the second direction.
8 . The display device of claim 7 , wherein the common layer comprises a connection portion that electrically connects first common portions respectively corresponding to the light-emitting elements to second common portions respectively corresponding to the light-receiving elements, and
wherein the connection portion comprises:
a first connection portion adjacent to one of the two green light-emitting elements and between the first and second disconnected spacers; and
a second connection portion adjacent to the other of the two green light-emitting elements and between the first and second disconnected spacers.
9 . The display device of claim 1 , wherein the element layer further comprises an undercut layer between the pixel definition layer and the disconnected spacer layer, and having an edge inside an edge of the disconnected spacer layer such that a gap is defined between the disconnected spacer layer and the pixel definition layer to surround the undercut layer.
10 . The display device of claim 9 , wherein the undercut layer comprises a metal material or a transparent conductive material.
11 . The display device of claim 1 , wherein the element layer further comprises a main spacer layer on the pixel definition layer and spaced apart from the disconnected spacer layer.
12 . The display device of claim 11 , wherein the disconnected spacer layer has a height that is greater than a height of the main spacer layer.
13 . The display device of claim 12 , wherein the common layer is partially disconnected by the disconnected spacer layer without being disconnected by the main spacer layer.
14 . The display device of claim 1 , wherein the disconnected spacer layer is integral with the pixel definition layer.
15 . A display device comprising:
a base layer;
a circuit layer on the base layer; and
an element layer on the circuit layer and comprising light-emitting elements and light-receiving elements, the element layer comprising:
a pixel definition layer defining a light-emitting opening defined therethrough to correspond to the light-emitting elements, and a light-receiving opening defined therethrough to correspond to the light-receiving elements;
a disconnected spacer layer adjacent to the light-receiving opening on the pixel definition layer; and
a common layer commonly in the light-emitting elements and the light-receiving elements, and partially disconnected around the light-receiving elements due to the disconnected spacer layer,
wherein the pixel definition layer comprises:
sub-sidewalls defining the light-receiving opening; and
corner portions defined by two sub-sidewalls connected to each other and adjacent to each other among the sub-sidewalls, and
wherein the disconnected spacer layer comprises disconnected spacers respectively adjacent to the sub-sidewalls.
16 . The display device of claim 15 , wherein the disconnected spacers are spaced apart from each other in an area adjacent to the corner portions, and
wherein the common layer comprises connection portions between the disconnected spacers and electrically connecting a first common portion corresponding to the light-emitting elements to second common portions respectively corresponding to the light-receiving elements.
17 . The display device of claim 15 , wherein the light-receiving opening has a quadrangular shape,
wherein the sub-sidewalls comprise first, second, third, and fourth sub-sidewalls, and
wherein the disconnected spacer layer comprises first, second, third, and fourth disconnected spacers respectively adjacent to the first, second, third, and fourth sub-sidewalls.
18 . The display device of claim 17 , wherein the pixel definition layer further comprises main sidewalls defining the light-emitting opening, and
wherein lengths of the sub-sidewalls are different from lengths of the main sidewalls.
19 . The display device of claim 18 , wherein the first, second, third, and fourth disconnected spacers comprise:
a first disconnected sidewall adjacent to the sub-sidewalls; and
a second disconnected sidewall adjacent to the main sidewalls, and
wherein the first disconnected sidewall has a length that is different from a length of the second disconnected sidewall.
20 . The display device of claim 18 , wherein the first, second, third, and fourth disconnected spacers comprise a trapezoidal shape in a plan view.
21 . The display device of claim 15 , wherein the light-receiving opening has a quadrangular shape,
wherein the sub-sidewalls comprise first, second, third, and fourth sub-sidewalls, and
wherein the disconnected spacer layer comprises:
a first disconnected spacer adjacent to the first and second sub-sidewalls connected to each other via a first corner portion; and
a second disconnected spacer adjacent to the third and fourth sub-sidewalls connected to each other via a second corner portion.
22 . The display device of claim 21 , wherein the first disconnected spacer and the second disconnected spacer are spaced apart from each other.
23 . The display device of claim 22 , wherein the common layer comprises a connection portion that electrically connects first common portions respectively corresponding to the light-emitting elements to second common portions respectively corresponding to the light-receiving elements, and
wherein the connection portion comprises:
a first connection portion adjacent to a third corner portion where the first and fourth sub-sidewalls are connected to each other and between the first and second disconnected spacers; and
a second connection portion adjacent to a fourth corner portion where the second and third sub-sidewalls are connected to each other and between the first and second disconnected spacers.
24 . A display device comprising:
a base layer;
a circuit layer on the base layer; and
an element layer on the circuit layer and comprising light-emitting elements and light-receiving elements, the element layer comprising:
a pixel definition layer defining a light-emitting opening defined therethrough to correspond to the light-emitting elements, and a light-receiving opening defined therethrough to correspond to the light-receiving elements;
a disconnected spacer layer adjacent to the light-receiving opening on the pixel definition layer; and
a common layer commonly in the light-emitting elements and the light-receiving elements, and partially disconnected around the light-receiving elements due to the disconnected spacer layer,
wherein the disconnected spacer layer comprises a disconnected spacer adjacent to the light-receiving elements,
wherein the common layer comprises a connection portion that electrically connects first common portions respectively corresponding to the light-emitting elements to second common portions respectively corresponding to the light-receiving elements,
wherein one end and another end of the disconnected spacer are spaced apart from each other by a predetermined distance and face each other, and
wherein the connection portion is at the one end and the other end of the disconnected spacer.