Display panel
View Patent ↗Provided is an organic EL display panel including pixels that are arranged in a matrix. Each of the pixels includes a plurality of unit pixels. Each of the pixels includes a red unit pixel and a blue unit pixel. The red unit pixel and the blue unit pixel are arranged side by side in a row direction. In pixels adjacent to each other in the row direction among the pixels, unit pixels are arranged in at least one of manners as follows: red unit pixels are adjacent to each other; and blue unit pixels are adjacent to each other.
1. A display panel comprising pixels that are arranged in a matrix, each of the pixels including a plurality of unit pixels,
wherein each of the pixels includes:
a first unit pixel representing a color; and
a second unit pixel representing a color different from the color of the first unit pixel,
the first unit pixel and the second unit pixel are arranged side by side in a first direction,
in pixels adjacent to each other in the first direction among the pixels, unit pixels are arranged as follows: first unit pixels are adjacent to each other; and second unit pixels are adjacent to each other,
each of the unit pixels includes, stacked above a substrate of the display panel, a planarizing film, an anode, a cathode, and an organic EL light-emitting layer made of an organic EL material and interposed between the anode and the cathode, the organic EL light-emitting layer being a printed film and being spaced from the planarizing film,
in pixels adjacent to each other in a second direction intersecting the first direction on a surface of the display panel, first unit pixels are arranged adjacent to each other and second unit pixels are arranged adjacent to each other, such that the light-emitting layers of the first unit pixels are connected in the second direction and the light-emitting layers of the second unit pixels are connected in the second direction,
the display panel further comprises a line isolator extending in the second direction, provided on and in contact with the planarizing film, the line isolator continuously provided in the second direction between the light-emitting layers of each of the unit pixels adjacent to each other in the first direction, the line isolator electrically and physically isolating the light-emitting layers of each of the adjacent unit pixels in the first direction, and
a width of the line isolator between the adjacent unit pixels having a same color is smaller than a width of the line isolator between the adjacent unit pixels having different colors.
2. The display panel according to claim 1 ,
wherein the first unit pixel represents a first color that is any one of red, blue, and green,
the second unit pixel represents a second color that is any one of red, blue, and green and is different from the first color, and
each of the pixels further includes a third unit pixel representing a third color that is any one of red, blue, and green and is different from the first color and the second color.
3. The display panel according to claim 1 , wherein the planarizing film extends beneath the line isolator.
4. The display panel according to claim 1 , wherein
in each of the unit pixels, the planarizing film is provided on and in contact with the substrate, and the anode, the organic EL light-emitting layer and the cathode are provided on the planarizing film in this order.
5. The display panel according to claim 2 , wherein
the first unit pixels are adjacent to each other in the first direction and the second unit pixels are adjacent to each other in the first direction,
a width of the line isolator in the first direction provided between the adjacent first pixels is smaller than a width of the line isolator in the first direction provided between the first unit pixel and the third unit pixel; and
the width of the line isolator in the first direction provided between the adjacent first pixels is smaller than a width of the line isolator in the first direction provided between the second unit pixel and the third unit pixel.
6. The display panel according to claim 5 , wherein the width of the line isolator in the first direction provided between the first unit pixel and the third unit pixel is different from the width of the line isolator in the first direction provided between the second unit pixel and the third unit pixel.
7. The display panel according to claim 1 , wherein the line isolator comprises a layer of a liquid-repellent material provided between the adjacent unit pixels in the first direction.
8. The display panel according to claim 1 , wherein the first direction is perpendicular to the second direction.
9. A display panel comprising pixels that are arranged in a matrix, each of the pixels including a plurality of unit pixels,
wherein each of the pixels includes:
a first unit pixel representing a color; and
a second unit pixel representing a color different from the color of the first unit pixel,
the first unit pixel and the second unit pixel are arranged side by side in a first direction,
in pixels adjacent to each other in the first direction among the pixels, unit pixels are arranged as follows: first unit pixels are adjacent to each other; and second unit pixels are adjacent to each other,
each of the unit pixels includes, stacked above a substrate of the display panel, a planarizing film, an anode, a cathode, and an organic EL light-emitting layer made of an organic EL material and interposed between the anode and the cathode, the organic EL light-emitting layer being a printed film and being spaced from the planarizing film,
in pixels adjacent to each other in a second direction intersecting the first direction on a surface of the display panel, first unit pixels are arranged adjacent to each other and second unit pixels are arranged adjacent to each other, such that the light-emitting layers of the first unit pixels are connected in the second direction and the light-emitting layers of the second unit pixels are connected in the second direction,
the display panel further comprises a line isolator extending in the second direction, provided on and in contact with the planarizing film, the line isolator continuously provided in the second direction between the light-emitting layers of each of the unit pixels adjacent to each other in the first direction, the line isolator electrically isolating each of the adjacent unit pixels in the first direction, and
a width of the line isolator between the adjacent unit pixels having a same color is smaller than a width of the line isolator between the adjacent unit pixels having different colors.
10. The display panel according to claim 9 , wherein the line isolator comprises a portion that electrically and physically isolates the light-emitting layers of each of the adjacent unit pixels in the first direction.
11. The display panel according to claim 9 , wherein the line isolator electrically and physically isolates, completely, the light-emitting layers of each of the adjacent unit pixels in the first direction.
12. The display panel according to claim 9 , wherein the line isolator continuously provided in the second direction between the light-emitting layers of each of the unit pixels adjacent to each other in the first direction is a single line isolator.