Method for producing an organic el display device
View Patent ↗A method includes: forming, in a first substrate, a display area in which a plurality of pixels including an organic EL light-emitting layer are arrayed; forming, in a second substrate, a plurality of opening areas respectively located in correspondence with the plurality of pixels and a light-blocking area that demarcates the plurality of opening areas; providing a dam material such that the dam material encloses the display area; dripping a filler material to an area enclosed by the dam material; and attaching the first substrate and the second substrate to each other, and fusing together dripped portions of the filler material, thereby bonding the both substrates to each other. The both substrates are attached to each other while being positionally aligned such that borders between the dripped portions of the filler material that is generated by the fusion are located in an area corresponding to the light-blocking area.
1. A method for producing an organic EL display device, comprising:
forming a plurality of pixels including an organic EL light-emitting layer on a substrate;
forming an inorganic film located above the organic EL light-emitting layer and covering the plurality of pixels;
dripping an organic material at a plurality of portions on the inorganic film by use of a jet dispenser or an inkjet device, the organic material being in contact with the inorganic film; and
forming an organic layer by fusing the organic material, the organic layer overlapping the plurality of pixels,
wherein the plurality of pixels has a plurality of sub pixels,
a plurality of opening areas is located in the plurality of sub pixels respectively,
light from the organic EL light-emitting layer is transmitted through each of the plurality of opening areas,
a light-blocking layer demarcating the plurality of sub pixels is located above the organic layer,
the light-blocking layer has a first region and a second region,
the first region surrounds one of the pixels,
the second region is located inside the first region and demarcates the opening areas included in the one of the pixels,
the plurality of portions includes two portions adjacent each other,
the organic layer includes a border at which the organic material of the two portions are fused together, and
the border overlaps the first region and does not overlap the second region in a planar view.
2. The method for producing an organic EL display device according to claim 1 , wherein the inorganic film is made of SiN.
3. The method for producing an organic EL display device according to claim 1 , wherein the organic material is made of a resin.
4. The method for producing an organic EL display device according to claim 3 , wherein the organic material is made of a thermosetting resin.
5. The method for producing an organic EL display device according to claim 1 , wherein the organic material is dripped at a dripping pitch shorter than or equal to 100 μm.
6. The method for producing an organic EL display device according to claim 1 , wherein the substrate includes a display area in which the plurality of pixels is arrayed, and the organic layer overlaps an entirety of the display area and an outside of the display area continuously in a planar view.
7. The method for producing an organic EL display device according to claim 1 , wherein the one of the pixels has four sub pixels,
the second region has a first part and a second part,
the first part runs in a first direction, and
the second part intersects the first part and runs in a second direction different form the first direction.
8. The method for producing an organic EL display device according to claim 7 , wherein the organic material is dripped at an intersecting portion where the first part and the second part intersect each other.
9. The method for producing an organic EL display device according to claim 1 , wherein the one of the pixels has a plurality of sub pixels arranged in a first direction, and
the second region has a plurality of parts arranged in the first direction and running in a second direction different from the first direction.
10. The method for producing an organic EL display device according to claim 1 , wherein the one of the pixels has a first sub pixel, a second sub pixel, and a third sub pixel arranged in a first direction in this order, and
the organic material is dripped at an opening area of the second sub pixel.