ORGANIC ELEMENT AND MANUFACTURING METHOD THEREOF
First Claim
1. An organic EL display panel comprising:
- a substrate;
anode electrodes set on the substrateline-state banks defining a line-state region and comprising a fluorine resin set on the substrate;
hole transport layers arranged in matrix state on the substrate, the hole transport layers being set in the line-state region;
a line-state interlayer set in the line-state region;
a line-state organic EL layer set in the line-state region; and
cathode electrodes provided on the organic EL layer;
wherein the line-state banks contain a fluorine resin;
a fluorine concentration of the fluorine resin gradually changes along a thickness direction of the line-state banks; and
the fluorine concentration at a top of each of the line-state banks is higher than the fluorine concentration at a bottom surface thereof.
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Abstract
An organic EL display panel having a functional layer with a uniform film thickness is provided. The organic EL display panel of the present invention contains an anode electrode set on a substrate; line-state banks set on the substrate on which the anode electrode is set and defining a line-state region; a hole transport layers arranged in matrix state on the substrate, the hole transport layer being set in the line-state region; a line-state interlayer set in the line-state region; a line-state organic EL layer set in the line-state region; and a cathode electrode provided on the organic EL layer, and the bank contains a fluorine resin.
68 Citations
20 Claims
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1. An organic EL display panel comprising:
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a substrate; anode electrodes set on the substrate line-state banks defining a line-state region and comprising a fluorine resin set on the substrate; hole transport layers arranged in matrix state on the substrate, the hole transport layers being set in the line-state region; a line-state interlayer set in the line-state region; a line-state organic EL layer set in the line-state region; and cathode electrodes provided on the organic EL layer; wherein the line-state banks contain a fluorine resin; a fluorine concentration of the fluorine resin gradually changes along a thickness direction of the line-state banks; and the fluorine concentration at a top of each of the line-state banks is higher than the fluorine concentration at a bottom surface thereof. - View Dependent Claims (2, 3, 4, 5, 7, 8)
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3. The organic EL display panel according to claim 1, further comprising insulating inorganic films, wherein
a material of the hole transport layers comprises tungsten oxide (WOx), molybdenum oxide (MoOx), vanadium oxide (VOx) or a combination of them; - and
the insulating inorganic films protrude from the line-state banks into the line-state region and are in contact with a bottom surface of the line-state interlayer.
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4. The organic EL display panel according to claim 1 further comprising second banks defining two or more pixel regions in the line-state region, wherein
a material of the hole transport layers comprises polyethylenedioxythiophene; -
the pixel regions define the hole transport layers; the second banks each have a groove connecting the pixel regions with each other; and heights of the second banks from the substrate are smaller than heights of the line-state banks from the substrate.
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5. The organic EL display panel according to claim 1 further comprising second banks defining two or more pixel regions in the line-state region, wherein
a material of the hole transport layers contains comprises tungsten oxide (WOx), molybdenum oxide (MoOx), vanadium oxide (VOx) or a combination of them; -
the pixel regions define the line-state interlayer and the organic EL layer; the second banks each have a groove connecting the pixel regions with each other; and heights of the second banks from the substrate are smaller than heights of the line-state banks from the substrate.
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7. The organic EL display panel according to claim 1, wherein the fluorine concentration at the top of each of the line-state banks is 5 to 10 atom % and the fluorine concentration at the bottom surface thereof is 0 to 3 atom %.
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8. The organic EL display panel according to claim 1, wherein the line-state banks are in a forward tapered shape.
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6. (canceled)
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9. A manufacturing method of an organic EL display panel comprising:
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forming anode electrodes on a substrate; forming line-state banks comprising a fluorine resin and defining a line-state region on the substrate so as to expose the anode electrodes; forming matrix-state hole transport layers on the substrate, a material of the hole transport layers comprising polyethylenedioxythiophene; forming a line-state interlayer in the line-state region; applying an ink comprising an organic EL material and a solvent to the line-state region with ink-jet, dispenser, nozzle coating, intaglio printing or letterpress printing to form a line-state organic EL layer in the line-state region; and forming cathode electrodes on the organic EL layer, wherein a fluorine concentration of the fluorine resin gradually changes along a thickness direction of the line-state banks; and
the fluorine concentration at a top of each of the line-state banks is higher than the fluorine concentration at a bottom surface thereof. - View Dependent Claims (10, 11, 12, 13)
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14. A manufacturing method of an organic EL display panel comprising:
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forming anode electrodes on a substrate; forming matrix-state hole transport layers on the substrate, a material of the hole transport layers comprising tungsten oxide (WOx), molybdenum oxide (MoOx), vanadium oxide (VOx) or a combination of them; forming line-state banks comprising a fluorine resin and defining a line-state region on the substrate so as to expose the hole transport layers; forming a line-state interlayer in the line-state region; applying an ink comprising an organic EL material and a solvent to the line-state region with ink-jet, dispenser, nozzle coating, intaglio printing or letterpress printing to form a line-state organic EL layer in the line-state region; and forming cathode electrodes on the organic EL layer, wherein a fluorine concentration of the fluorine resin gradually changes along a thickness direction of the line-state banks; and
the fluorine concentration at a top of each of the line-state banks is higher than the fluorine concentration at a bottom surface thereof. - View Dependent Claims (15, 16, 17, 18)
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19. An organic EL element comprising a substrate, an anode electrode formed on the substrate, an organic EL layer formed on the anode electrode, and a bank defining a region of the organic EL layer, wherein
the bank comprises a fluorine resin and a fluorine concentration of the fluorine resin gradually changes along a thickness direction of the bank, and the fluorine concentration at a top of the bank is higher than the fluorine concentration at a bottom surface of the bank.
Specification