Display device
View Patent ↗A display device includes a first substrate, an organic EL layer formed on the first substrate and curved in each pixel, and color filters disposed in the respective pixels, and curved to match the organic EL layer. With this configuration, a change in the chromaticity and brightness of the display device depending on a viewing angle of a user is reduced.
1. A display device comprising:
a first substrate having a first side;
a plurality of lower electrodes on the first side of the first substrate, each of the lower electrodes having a first curved portion in a cross sectional view;
an organic EL layer on one of the lower electrodes;
an upper electrode covering the organic EL layer;
a second substrate having a second side facing the first side;
a plurality of second curved portions on the second side of the second substrate, one of which is curved to match the first curved portion of the lower electrode in a cross sectional view;
a color filter on the plurality of second curved portions, and between the plurality of second curved portions and the upper electrode; and
a black matrix between adjacent second curved portions among the second curved portions on the second substrate; wherein
a distance between a lower surface of the black matrix and the first side is greater than a distance between the one of the plurality of second curved portions and the first side.
2. The display device according to claim 1 ,
wherein the organic EL layer has a light emitting surface that emits light to a side corresponding to a display surface of the display device,
the first curved portion of the lower electrode is curved to concave the light emitting surface, and
the second curved portion on the second substrate is curved to convex the color filter.
3. The display device according to claim 1 ,
wherein the width of the one of the plurality of second curved portions is smaller than that of the first curved portion in a plan view.
4. The display device according to claim 2 ,
wherein lower ends of each of the plurality of second curved portions are positioned lower than an upper end of the first curved portion in a cross sectional view.
5. The display device according to claim 1 , further comprising:
an insulating layer on the first substrate; and
an insulating layer on the second substrate,
wherein
the insulating layer on the second substrate includes the plurality of second curved portions,
the insulating layer on the first substrate includes a third curved portion, and
the first curved portion curved to match the third curved portion is formed on the third curved portion.
6. The display device according to claim 1 , further comprising:
a filler between the color filter and the upper electrode.