Donor film and methods for fabricating patterned organic electroluminescent devices using the same
AssigneeSamsung Mobil Display Co., Ltd.
InventorTae-Woo Lee
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Abstract
A donor film has a soft polymer film and a transfer layer to be transferred which is formed on the soft polymer film. When fabricating a patterned organic electroluminescent device using the donor film for thin film transfer, the transfer layer is transferred even with a small amount of energy due to good adhesion between the transfer layer of the donor film and an acceptor film, and multiple layers, such as organic small molecular and polymer layers in addition to a metal layer, may be simultaneously transferred, while eliminating a need of a photothermal conversion layer.
Claims23
A method for fabricating an organic electroluminescent device, the method comprising:
- forming an anode on a substrate;
- forming a first organic layer on the anode;
- preparing a donor film comprising a polymer film patterned in an uneven shape having a protruding region and a recessed region and a transfer layer formed on the polymer film;
- and
- forming a patterned layer on the first organic layer by allowing the protruding region of the transfer layer to contact with the first organic layer and applying at least one of heat, light, electricity and pressure to the donor film for transferring the transfer layer onto the first organic layer.
A method for fabricating an organic electroluminescent device, the method comprising:
- forming an anode on a substrate;
- forming a first organic layer on the anode;
- and
- preparing a donor film comprising a polymer film patterned in an uneven shape having a protruding region and a recessed region and a transfer layer formed on the polymer film, the polymer film having a thickness of 0.5 mm or greater, a ratio of a width of a protruding region to a width of a recessed region being greater than or equal to 0.1, a width-to-height ratio of the protruding region being greater than or equal to 0.2;
- and
- forming a patterned layer on the first organic layer by allowing the protruding region of the transfer layer to contact with the first organic layer and applying at least one of heat, light, electricity and pressure to the donor film for transferring the transfer layer onto the first organic layer.
A donor film, comprising:
- a polymer film patterned in an uneven shape having a protruding region and a recessed region;
- and
- a transfer layer formed on the polymer film.
Dependencies are inferred from the claim text.