Organic EL display device and manufacturing method thereof
View Patent ↗An organic EL display device manufacturing method that allows the reliability of the organic EL display device having undergone a defect repair process to be improved. Manufacturing method for organic EL display device, method including an organic EL element substrate formation step of forming at least one organic EL element on an organic EL element substrate, the organic EL element including an organic EL film, an anode electrode, reflection electrode that form a first conductive film provided below the organic EL film, a cathode electrode that forms a second conductive film provided above the to organic EL film, resin sealing step of providing a thermoplastic sealing resin to cover the upper side of the organic EL element, defect detection step of detecting a defect in the organic EL element, and defect elimination step of eliminating the defect detected in the defect detection step by irradiating the defect with a laser beam.
1. An organic EL display device comprising:
an organic EL element substrate on which at least one organic EL element is formed, the organic EL element including an organic EL film, a first conductive film provided below the organic EL film, and a second conductive film stacked on the organic EL film; and
a thermoplastic sealing resin that covers the upper side of the organic EL element,
wherein an opening is formed in the second conductive film where the organic EL element is present, and
the edge of the opening is raised toward not only the side where the sealing resin is present but also the side where the organic EL film is present and hence thicker than the second conductive film.
2. The organic EL display device according to claim 1 ,
wherein at least part of the edge on the side where the organic EL film is present is covered with the sealing resin.
3. The organic EL display device according to claim 2 ,
wherein the portion of the organic EL film that is in the vicinity of the opening is removed, and
the portion of the organic EL film is filled with the sealing resin in such a way that the sealing resin is interposed between the first conductive film and the second conductive film.
4. The organic EL display device according to claim 1 ,
wherein the sealing resin has a desiccating agent capability.
5. The organic EL display device according to claim 1 ,
wherein the sealing resin has thermoplasticity in which the sealing resin solidifies at room temperature, whereas softening at a temperature within a predetermined range outside room temperature.
6. The organic EL display device according to claim 5 ,
wherein the sealing resin softens at a temperature within a range from 50 to 250 degrees inclusive.
7. The organic EL display device according to claim 1 ,
further comprising a sealing substrate that covers the upper side of the organic EL element and the sealing resin,
wherein a plurality of organic EL elements that emit light in different colors are formed on the organic EL element substrate.
8. The organic EL display device according to claim 1 ,
further comprising a sealing substrate to which the sealing resin that covers the upper side of the organic EL element is attached,
wherein a plurality of organic EL elements that emit light in different colors are formed on the organic EL element substrate.
9. The organic EL display device according to claim 7 ,
wherein the first conductive film is a conductive film that reflects the light emitted from the organic EL film upward, and
the second conductive film is a transparent conductive film that transmits the light emitted from the organic EL film.