Display device having light-emitting elements including metals
First Claim
1. A display device comprising:
- a plurality of light-emitting elements aligned on a TFT substrate in a formation of a matrix, the plurality of light-emitting elements each having a flat surface portion and including an anode, a light-emitting layer arranged on the anode, and a cathode arranged on the light-emitting layer;
an insulation layer formed on the TFT substrate and under the light emitting element;
a tilted metal which is provided on a peripheral area surrounding the flat surface portion of each of the plurality of light-emitting elements and has a tilt angle against the flat surface portion of each of the plurality of light-emitting elements; and
an optical waveguide layer which is arranged on the cathode and includes a first layer and a second layer on the first layer, a first refraction index of the first layer being larger than a second refraction index of the second layer,wherein the tilted metal is provided on a surface of a slope of a bank that is provided on the insulation layer,wherein the bank covers an edge of the anode and has an opening exposing a part of a surface of the anode,wherein the optical waveguide layer is arranged directly above the part of the surface of the anode,wherein a width of a cross section of the bank becomes smaller as the cross section comes farther away from a surface of the TFT substrate,wherein a sealing film is placed on the plurality of light-emitting elements, the optical waveguide layer, the tilted metal, and the TFT substrate,wherein the light emitting element emits light in a direction from the TFT substrate to the sealing film, andwherein a first distance between the TFT substrate and a first top surface of the optical waveguide layer is smaller than a second distance between a second top surface of the bank and the TFT substrate.
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Accused Products
Abstract
A display device includes a plurality of light-emitting elements aligned on a TFT substrate in a formation of a matrix. The plurality of light-emitting elements each have a flat surface portion and including a light-emitting layer, an anode, and a cathode, an insulating layer formed on the TFT substrate and under the light emitting element, and a tilted metal surface provided on a peripheral area surrounding the flat surface portion of the light-emitting element and having a tilt angle with respect to the flat surface portion of the light-emitting element. The tilted metal surface is provided on a surface of a slope of a bank that is provided on the insulation layer, and a width of a cross-section of the bank becomes smaller as the cross section comes farther away from a surface of the TFT substrate. A counter substrate is placed on the TFT substrate.
40 Citations
20 Claims
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1. A display device comprising:
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a plurality of light-emitting elements aligned on a TFT substrate in a formation of a matrix, the plurality of light-emitting elements each having a flat surface portion and including an anode, a light-emitting layer arranged on the anode, and a cathode arranged on the light-emitting layer; an insulation layer formed on the TFT substrate and under the light emitting element; a tilted metal which is provided on a peripheral area surrounding the flat surface portion of each of the plurality of light-emitting elements and has a tilt angle against the flat surface portion of each of the plurality of light-emitting elements; and an optical waveguide layer which is arranged on the cathode and includes a first layer and a second layer on the first layer, a first refraction index of the first layer being larger than a second refraction index of the second layer, wherein the tilted metal is provided on a surface of a slope of a bank that is provided on the insulation layer, wherein the bank covers an edge of the anode and has an opening exposing a part of a surface of the anode, wherein the optical waveguide layer is arranged directly above the part of the surface of the anode, wherein a width of a cross section of the bank becomes smaller as the cross section comes farther away from a surface of the TFT substrate, wherein a sealing film is placed on the plurality of light-emitting elements, the optical waveguide layer, the tilted metal, and the TFT substrate, wherein the light emitting element emits light in a direction from the TFT substrate to the sealing film, and wherein a first distance between the TFT substrate and a first top surface of the optical waveguide layer is smaller than a second distance between a second top surface of the bank and the TFT substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A display device including:
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a plurality of light-emitting elements aligned on a TFT substrate in a formation of a matrix, at least one of the plurality of light-emitting elements having a flat surface portion and including an anode, a light-emitting layer arranged on the anode, and a cathode arranged on the light-emitting layer; an insulation layer formed on the TFT substrate and under the light emitting element; a first metal which is provided on a surface of a slope of a first bank that is provided on the insulation layer; a second metal which is provided on a surface of a slope of a second bank that is provided on the insulation layer; a predetermined layer which is arranged on the cathode and includes a first layer made of an organic material and a second layer made of an inorganic material on the first layer, wherein the flat surface portion of the at least one of the plurality of light-emitting elements is arranged between the first metal and the second metal, wherein the first and second banks cover an edge of the anode and have an opening exposing a part of a surface of the anode, wherein the predetermined layer is arranged directly above the part of the surface of the anode, wherein a width of a cross section of each of the first and the second banks becomes smaller as the cross section comes farther away from a surface of the TFT substrate, wherein a sealing film is placed on the plurality of light-emitting elements, the predetermined layer, the first metal, the second metal, and the TFT substrate, wherein the light emitting element emits light in a direction from the TFT substrate to the sealing film, wherein a first distance between the TFT substrate and a first top surface of the predetermined layer being smaller than a second distance between a second top surface of the first bank and the TFT substrate. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A display device comprising:
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a plurality of light-emitting elements aligned on a TFT substrate in a formation of a matrix, at least one of the plurality of light-emitting elements having a flat surface portion and including an anode, a light-emitting layer arranged on the anode, and a cathode arranged on the light-emitting layer; an insulation layer formed on the TFT substrate and under the light emitting element; a metal is provided on a surface of an insulation bank that is provided on the insulation layer; a predetermined electrode is provided directly above the metal; a predetermined layer arranged on the cathode, a first distance between the TFT substrate and a first top surface of the predetermined layer being smaller than a second distance between a second top surface of the insulation bank and the TFT substrate, wherein the insulation bank covers an edge of the anode and has an opening exposing a part of a surface of the anode, wherein the predetermined layer arranged directly above the part of the surface of the anode, wherein each of the insulation bank and the first metal surrounds the flat surface portion of the at least one of the plurality of light-emitting elements in plan view, wherein a width of a cross section of the insulation bank becomes smaller as the cross section comes farther away from a surface of the TFT substrate, wherein a sealing film is placed on the plurality of light-emitting elements, the predetermined layer, the metal, and the TFT substrate, and wherein the light emitting element emits light in a direction from the TFT substrate to the sealing film. - View Dependent Claims (17, 18, 19, 20)
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Specification