Organic electroluminescence display device
View Patent ↗An organic electroluminescence display device includes a substrate; a thin film transistor that is formed on the substrate; a light emitting region that has a lower electrode, a light emitting layer, and an upper electrode formed for each of a plurality of pixels arranged in a matrix shape on the thin film transistor; and a contact hole that is formed on the outside of the light emitting region in one corner portion of the pixel and connects the thin film transistor and the lower electrode for each pixel in a plan view. Only one pair of pixels of four pixels that share an intersection point of boundaries of the pixels arranged in the matrix shape, which are arranged in a diagonal manner have the contact holes at the corner portions having the intersection point.
1. An organic electroluminescence display device comprising:
a substrate;
a thin film transistor that is formed on the substrate;
a light emitting region that has a lower electrode, a light emitting layer, and an upper electrode formed for each of a plurality of pixels arranged in a matrix shape on the thin film transistor; and
contact holes, each of which is formed on the outside of the light emitting region in one corner portion of the pixel and connects the thin film transistor and the lower electrode for each pixel in a plan view,
wherein the plurality of pixels include a first pixel, a second pixel, and a third pixel,
the first pixel includes a first contact hole at a first corner portion,
the second pixel is adjacent to the first pixel in a first direction and includes a second contact hole at a second corner portion that is offset from the first corner portion in a second direction,
the third pixel is adjacent to the first pixel in the second direction and includes a third contact hole at a third corner portion that is offset from the first corner portion in the first direction, wherein the third corner portion is offset from the second corner portion in the second direction,
the first corner portion has a first boundary perpendicular to the first direction and a second boundary parallel to the first direction,
the second corner portion has a third boundary perpendicular to the first direction and a fourth boundary parallel to the first direction,
the third corner portion has a fifth boundary perpendicular to the second direction and a sixth boundary parallel to the second direction,
the first boundary and the third boundary share an interface with respect to the first pixel and the second pixel, respectively, and
the second boundary and the fifth boundary share an interface with respect to the first pixel and the third pixel, respectively; and
wherein each pixel has only one contact hole.
2. The organic electroluminescence display device according to claim 1 ,
wherein the first direction is perpendicular to the second direction.
3. The organic electroluminescence display device according to claim 1 ,
wherein the light emitting region is an L shape in a plan view.
4. The organic electroluminescence display device according to claim 1 ,
wherein the light emitting region is a rectangular shape in a plan view.
5. The organic electroluminescence display device according to claim 1 ,
wherein the light emitting region is a triangular shape in a plan view.