Display device and manufacturing method
View Patent ↗The invention provides a display apparatus comprising: a plurality of thin film transistors; a protective film formed on the thin film transistor; a plurality of pixel electrodes formed on the protective film and electrically connected with the thin film transistors; a partition wall layer partitioning the pixel electrodes adjacent to each other, the partition wall layer including a main exposure portion exposing the pixel electrode and a sub-exposure portion protruded and extended from the main exposure portion whereby the problem of non-uniform coating of ink in the corners of pixel electrodes is overcome.
1. A display apparatus comprising:
a plurality of thin film transistors;
a protective film formed on the thin film transistor;
a plurality of pixel electrodes formed on the protective film and electrically connected with the thin film transistors;
a light-emitting layer formed on the pixel electrode,
a partition wall layer partitioning the pixel electrodes adjacent to each other, the partition wall layer including a main recess portion exposing the pixel electrode and a sub recess portion protruded from the main recess portion, wherein the main and sub recess portion contains at least one portion of the light-emitting layer respectively;
wherein at least a part of the pixel electrode is contacted with the light-emitting layer at the sub recess portion.
2. The display device as set forth in claim 1 , wherein the area of the sub recess portion is within a range of about 5˜15% of that of the main recess portion.
3. The display device as set forth in claim 1 , wherein the sub recess portion has a plane form containing at least one of a straight line and a curved line.
4. The display device as set forth in claim 1 , wherein the partition wall layer is formed in such a way that the partition wall layer is spaced apart from the pixel electrode in at least a part of the sub recess portion and is formed on the same layer as the pixel electrodes.
5. The display device as set forth in claim 1 , wherein the protective film is exposed through at least a part of the sub recess portion.
6. The display device as set forth in claim 5 , wherein the exposed portion of the protective film is covered with the light-emitting layer.
7. The display device as set forth in claim 1 , wherein the pixel electrode is formed in the shape of a rectangle having a long side and a short side, at least one corner of the rectangle having a curved shape.
8. The display device as set forth in claim 1 , wherein the pixel electrode is formed in the shape of a rectangle having a long side and a short side.
9. The display device as set forth in claim 1 , wherein the sub recess portion comprises a stepped portion formed in at least a part of an edge of the partition wall layer.
10. The display device as set forth in claim 1 , wherein the sub recess portion comprises a stepped portion formed in any one edge of the partition wall layer, and the light-emitting layer emitting a same color is formed on the pixel electrodes adjacent to each other with the stepped portion placed in-between.
11. The display device as set forth in claim 1 , wherein a depressed portion is formed in at least a part of the partition wall layer.
12. The display device as set forth in claim 11 , wherein the light-emitting layers are formed on the pixel electrodes adjacent to the depressed portion to emit different colors from each other.
13. The display device as set forth in claim 1 , further comprising a common electrode formed on the light-emitting layer.
14. The display device as set forth in claim 1 , wherein the pixel electrode has an oval shape.
15. The display device as set forth in claim 1 , wherein a material of the partition wall layer in the main recess portion is the same as a material of the partition wall layer in the sub recess portion.