Organic light-emitting display device and method for fabricating the same
AssigneeLG Display Co., Ltd.
InventorJungyeon Kim
Life of this patent
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Abstract
Provided is an OLED device that includes an adhesive film having a network and a method for fabricating the same. The OLED device includes: a protective layer covering an organic light-emitting element on a substrate; a metal layer on the protective layer; and an adhesive film between the metal layer and the protective layer to attach the metal layer to the protective layer. The adhesive film includes a first adhesive layer composed of first polymers having a network structure, and a second adhesive layer composed of second polymers having a network structure and moisture absorbent. The network structure of the first polymers is bonded with the network structure of the second polymers at an interface between the first adhesive layer and the second adhesive layer.
Claims20
An organic light-emitting display (OLED) device comprising:
- a protective layer covering an organic light-emitting element on a substrate;
- a metal layer on the protective layer;
- and
- an adhesive film between the metal layer and the protective layer and configured to attach the metal layer and the protective layer, the adhesive film comprising:
- a first adhesive layer composed of first polymers having a network structure, and a second adhesive layer composed of second polymers having a network structure and moisture absorbent, and
- wherein the first polymers and the second polymers are bonded with the network structure at a contact surface of the first adhesive layer and the second adhesive layer, and
- wherein a deformation degree of the second polymers is larger than that of the first polymers.
A display panel comprising:
- an insulation layer covering an organic light-emitting element on a substrate;
- a lower attaching member on the insulation layer and composed of first polymers bonded with one another in a network structure;
- and
- an upper attaching member on the lower attaching member and composed of moisture absorbent and second polymers bonded with one another in a network structure, and
- wherein the first polymers and the second polymers are cross-linked in a network structure at an interface between the lower attaching member and the upper attaching member to increase adhesion between the lower attaching member and the upper attaching member, such increased adhesion of the cross-linked network structure being sufficient to suppress physical stress at the interface caused by expansion of the moisture absorbent.
A method for fabricating a display device, the method comprising:
- attaching a first adhesive film composed of first polymers, a second adhesive film composed of second polymers and moisture absorbent, and a metal film above and below;
- forming a sealing layer in which a bonding structure of each of the first polymers and the second polymers is modified by irradiating UV rays to the first adhesive film and the second adhesive film attached;
- and
- attaching the sealing layer to an array substrate on which an organic light-emitting layer is formed,
- wherein the forming the sealing layer comprises forming a network structure by cross-linking between the first polymers and the second polymers at an interface between the first adhesive film and the second adhesive film.
Dependencies are inferred from the claim text.