Evaporation mask, method of fabricating organic electroluminescent device using the same, and organic electroluminescent device
AssigneeSamsung NEC Mobile Display Co., Ltd.
InventorsKoji Shigemura, Chang Ho Kang
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Abstract
An evaporation mask, a method of manufacturing an organic electroluminescent device using the evaporation mask, and an organic electroluminescent device manufactured by the method are provided. The evaporation mask is formed of a thin film and is drawn taut by application of tension. The evaporation mask includes at least one mask unit, the mask unit including a plurality of main apertures, and a plurality of first dummy apertures formed adjacent to outermost ones of the main apertures in a direction in which tension is applied to the evaporation mask.
Claims51
An evaporation mask formed of a thin film, wherein the evaporation mask is drawn taut by application of tension and comprises:
- at least one mask unit, comprising:
- a plurality of main apertures, and
- a plurality of first dummy apertures formed adjacent to outermost ones of the main apertures in a direction in which tension is applied to the evaporation mask.
An evaporation mask formed of a thin film, wherein the evaporation mask is drawn taut by application of tension, the evaporation mask comprising:
- at least two mask units each having at least one main aperture;
- and
- at least one second dummy aperture formed outside and adjacent to the mask units located at the outermost sides in the direction in which tension is applied to the evaporation mask.
A method of manufacturing an organic electroluminescent (EL) device, the method comprising:
- forming first electrodes on a substrate;
- disposing an evaporation mask to form an organic film over the substrate, the evaporation mask drawn taut by application of tension and having at least one mask unit, the mask unit comprising a plurality of main apertures and a plurality of first dummy apertures formed adjacent to outermost ones of the main apertures in a direction in which tension is applied to the evaporation mask;
- forming the organic film comprising an effective luminescent area to cover at least the first electrodes by evaporating an organic material containing an organic luminescent material through the main apertures, and forming a first dummy pattern area outside the effective luminescent area through the first dummy apertures;
- forming second electrodes on the organic film so that the effective luminescent area is formed at an area where the first and second electrodes overlap;
- and
- sealing the resulting structure.
A method of manufacturing an organic EL device, the method comprising:
- forming first electrodes for an organic EL device on a substrate;
- disposing an evaporation mask to form an organic film over the substrate, the evaporation mask drawn taut by application of tension and including at least two mask units each comprising a plurality of main apertures and a plurality of second dummy apertures formed outside and adjacent to outermost ones of the mask units in a direction in which tension is applied to the evaporation mask;
- forming the organic film comprising an effective luminescent area to cover at least the first electrodes by evaporating an organic material containing an organic luminescent material through the main apertures of each of the mask units;
- forming second electrodes on the organic film so that the effective luminescent area is formed at an area where the first and second electrodes overlap;
- and
- sealing the resulting structure.
A method of manufacturing an organic EL device, the method comprising:
- forming first electrodes on a substrate in a predetermined pattern;
- forming an organic film comprising an effective luminescent area to cover at least the first electrodes by evaporating an organic material containing an organic luminescent material;
- disposing an evaporation mask to form second electrodes over the organic film, the evaporation mask drawn taut by application of tension and comprising a plurality of main apertures and a plurality of dummy apertures formed adjacent to outermost ones of the main apertures in a direction in which tension is applied to the evaporation mask;
- forming the second electrodes through the main apertures so that the effective luminescent area is formed at an area where the first and second electrodes overlap, and forming a second dummy pattern area outside the effective luminescent area through the first dummy apertures;
- and
- sealing the resulting structure.
A method of manufacturing an organic EL device, the method comprising:
- forming first electrodes for an organic EL device on a substrate;
- forming an organic film comprising an effective luminescent area to cover at least the first electrodes by evaporating an organic material containing an organic luminescent material;
- disposing an evaporation mask to form second electrodes over the organic film, the evaporation mask drawn taut by application of tension and comprising at least two mask units comprising a plurality of main apertures and a plurality of second dummy apertures formed outside and adjacent to outermost ones of the mask units in a direction in which tension is applied to the evaporation mask;
- forming the second electrodes through the main apertures of each of the mask units so that the effective luminescent area is formed at an area where the first and second electrodes overlap;
- and
- sealing the resulting structure.
An organic EL device comprising:
- a substrate;
- an effective luminescent area formed by sequentially stacking first electrodes, an organic film including an organic luminescent layer, and second electrodes on the substrate, wherein the organic film emits light at the area where the first and second electrodes overlap;
- a terminal unit formed on the edge of the substrate outside the effective luminescent area, the terminal unit having a first electrode terminal connected to the first electrodes and a second electrode terminal connected to the second electrodes;
- a sealing unit formed on the substrate so as to expose the terminal unit and seal at least the effective luminescent area;
- and
- a dummy pattern area formed outside of the effective luminescent area.
An evaporation mask formed of a thin film, wherein the evaporation mask is drawn taut by application of tension, the evaporation mask comprising:
- at least one mask unit comprising:
- at least one main aperture, and
- at least one first dummy aperture formed adjacent to an outermost at least one main aperture in a direction in which tension is applied to the evaporation mask.
A mask unit for an evaporation mask, comprising:
- a main aperture;
- and
- a dummy aperture;
- wherein the dummy aperture prevents the main aperture from being deformed by tension applied to the evaporation mask.
Dependencies are inferred from the claim text.