Display apparatus and manufacturing method therefor
First Claim
1. A display apparatus comprising:
- a first substrate;
an organic EL device comprising a first electrode which is formed on said first substrate, an organic EL layer which is formed on said first electrode, and a second electrode which is formed on said organic EL layer;
a first inorganic insulating film which is formed on said organic EL device, sealing said organic EL layer; and
a second substrate which is formed on said first inorganic insulating film,wherein the material and the thickness of said first substrate and said second substrate are set such that the neutral axis when a bending stress is applied is located in the vicinity of the interface between said first inorganic insulating film and said second substrate, andwherein the rigidity of said first substrate and the rigidity of said second substrate are identical to each other.
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Accused Products
Abstract
A display apparatus including a substrate 22; an organic EL device including an electrode 24 which is formed on the substrate 22, an organic EL layer 26 which is formed on the electrode 24, and an electrode 30 which is formed on the organic EL layer 26; an inorganic insulating film 34 which is formed on the organic EL device, sealing the organic EL layer; and a substrate 38 which is formed on the inorganic insulating film 34, wherein the material and the thickness of the substrate 22 and the substrate 38 are set such that the neutral axis when a bending stress is applied is located in the vicinity of the interface between the inorganic insulating film 34 and the substrate 38. By configuring such a display apparatus, occurrence of cracks in the inorganic insulating film is prevented, and the organic EL device can be effectively protected against moisture and oxygen. As a result, the reliability of the display apparatus can be improved.
20 Citations
21 Claims
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1. A display apparatus comprising:
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a first substrate; an organic EL device comprising a first electrode which is formed on said first substrate, an organic EL layer which is formed on said first electrode, and a second electrode which is formed on said organic EL layer; a first inorganic insulating film which is formed on said organic EL device, sealing said organic EL layer; and a second substrate which is formed on said first inorganic insulating film, wherein the material and the thickness of said first substrate and said second substrate are set such that the neutral axis when a bending stress is applied is located in the vicinity of the interface between said first inorganic insulating film and said second substrate, and wherein the rigidity of said first substrate and the rigidity of said second substrate are identical to each other. - View Dependent Claims (3, 4, 5, 6)
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2. A display apparatus comprising:
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a first substrate; an organic EL device comprising a first electrode which is formed on said first substrate, an organic EL layer which is formed on said first electrode, and a second electrode which is formed on said organic EL layer; a first inorganic insulating film which is directly formed on said organic EL device, sealing said organic EL layer; and a second substrate which is formed on said first inorganic insulating film, wherein the rigidity of said first substrate and the rigidity of said second substrate are identical to each other. - View Dependent Claims (14, 15, 16, 17)
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7. A display apparatus comprising:
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a first substrate; an organic EL device comprising a first electrode which is formed on said first substrate, an organic EL layer which is formed on said first electrode, and a second electrode which is formed on said organic EL layer; a first inorganic insulating film which is formed on said organic EL device, sealing said organic EL layer; and a second substrate which is formed on said first inorganic insulating film, wherein the material and the thickness of said first substrate and said second substrate are set such that the neutral axis when a bending stress is applied is located in the vicinity of the interface between said first inorganic insulating film and said second substrate, and wherein said neutral axis is located between the location on said fast substrate side corresponding to 40% of the thickness of said first substrate from the interface of said inorganic insulating film on said first substrate side, and the location on said second substrate side corresponding to 40% of the thickness of said second substrate from the interface of said inorganic insulating film on said second substrate side. - View Dependent Claims (18, 19, 20, 21)
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8. A manufacturing method for a display device, comprising:
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forming a first electrode on a first substrate; forming an organic EL layer on said first electrode; forming a second electrode on said organic EL layer; forming a first inorganic insulating film so as to seal said organic EL layer; and forming, on said first inorganic insulating film, a second substrate in which the material and the thickness are set such that the neutral axis when a bending stress is applied is located in the vicinity of the interface with said first inorganic insulating film, wherein in said forming of the second substrate, said second substrate is formed so as to have the same rigidity as that of said first substrate. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification