Organic EL display device with a multi-layered, resin-based planarization film
AssigneeSharp Kabushiki Kaisha
InventorsHiroshi Sugimoto, Tohru Sonoda
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Abstract
An organic EL display device (10) includes: an insulating substrate (20); a first planarizing film (21) formed on the insulating substrate (20) and made of a resin; a first electrode (13) formed on the first planarizing film (21); an organic EL layer (17) formed on the first electrode (13); a second electrode (14) formed on the organic EL layer (17); and a second planarizing film (22) formed between the first electrode (13) and the first planarizing film (21), and covering the first planarizing film (21). The second planarizing film (22) is made of a resin having a lower hygroscopic property than the resin forming the first planarizing film (21).
Claims7
An organic EL display device, comprising:
- an insulating substrate;
- a planarizing film formed on the insulating substrate and made of a resin;
- a first electrode formed on the planarizing film;
- an organic EL layer formed on the first electrode;
- a second electrode formed on the organic EL layer;
- and
- an interlayer film formed between the first electrode and the planarizing film, and covering the planarizing film, wherein
- a thickness of the planarizing film is larger than that of the interlayer film,
- the interlayer film is made of a resin having a lower hygroscopic property than the resin forming the planarizing film,
- the interlayer film is formed so as to confine water contained in the planarizing film,
- the interlayer film covers an upper surface and side surfaces of the planarizing film, and
- the planarizing film covers a TFT.
A method for manufacturing an organic EL display device, comprising at least the steps of:
- forming, on an insulating substrate, a planarizing film made of a resin;
- forming, on the planarizing film, an interlayer film made of a resin having a lower hygroscopic property than the resin forming the planarizing film, so as to cover the planarizing film, wherein
- a thickness of the planarizing film is larger than that of the interlayer film,
- the interlayer film is formed so as to confine water contained in the planarizing film,
- the interlayer film covers an upper surface and side surfaces of the planarizing film, and
- the planarizing film covers a TFT;
- forming a first electrode on the interlayer film so that the interlayer film is placed between the first electrode and the planarizing film;
- forming an organic EL layer on the first electrode;
- and
- forming a second electrode on the organic EL layer.
Dependencies are inferred from the claim text.