Organic light emitting display device and method of fabricating the same
First Claim
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1. A method of fabricating an organic light emitting diode (OLED) display, the method comprising:
- providing a substrate;
forming a thin film transistor including a semiconductor layer, a gate electrode, a source electrode and a drain electrode on a transistor region of the substrate;
forming a scan line when forming the gate electrode on a metal line region of the substrate;
forming a common power supply line and a data line when forming the source electrode and the drain electrode;
forming a passivation layer over an entire surface of the substrate including the thin film transistor;
forming a first electrode to overlap the scan line, the common power supply line and/or the data line;
forming a pixel defining layer on at least the first electrode, creating an opening portion in the pixel defining layer using a backside exposure technique to expose a portion of a surface of the first electrode;
forming an organic layer including at least an organic emission layer on the portion of the surface of the first electrode; and
forming a second electrode on the organic layer.
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Abstract
A method of fabricating an organic light emitting diode (OLED) display is provided. According to the method, a first electrode overlaps a scan line, a common power supply line and/or a data line. A pixel defining layer (PDL) is etched by backside exposure so that an aperture ratio of the OLED may be enhanced.
42 Citations
20 Claims
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1. A method of fabricating an organic light emitting diode (OLED) display, the method comprising:
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providing a substrate;
forming a thin film transistor including a semiconductor layer, a gate electrode, a source electrode and a drain electrode on a transistor region of the substrate;
forming a scan line when forming the gate electrode on a metal line region of the substrate;
forming a common power supply line and a data line when forming the source electrode and the drain electrode;
forming a passivation layer over an entire surface of the substrate including the thin film transistor;
forming a first electrode to overlap the scan line, the common power supply line and/or the data line;
forming a pixel defining layer on at least the first electrode, creating an opening portion in the pixel defining layer using a backside exposure technique to expose a portion of a surface of the first electrode;
forming an organic layer including at least an organic emission layer on the portion of the surface of the first electrode; and
forming a second electrode on the organic layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An organic light emitting diode (OLED) display, comprising:
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a substrate;
a thin film transistor formed on a transistor region of the substrate, the thin film transistor including a semiconductor layer, a gate electrode, a source electrode and a drain electrode;
a scan line formed in a same layer as the gate electrode, when the gate electrode is formed in a metal line region of the substrate;
a common power supply line and a data line formed in the same layer as the source electrode and the drain electrode, when the source electrode and drain electrode are formed;
a first electrode overlapping the scan line, the common power supply line, and/or the data line;
a pixel defining layer defining an opening portion, the pixel defining layer formed on the first electrode, the opening portion exposing a portion of a surface of the first electrode;
an organic layer formed on an exposed portion of the first electrode and including at least an organic emission layer; and
a second electrode formed on the organic layer. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. An organic light emitting diode comprising:
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a substrate;
a thin film transistor formed on the substrate;
a scan line formed on the substrate;
a common power supply line formed on the substrate;
a data line formed on the substrate;
a first electrode overlapping the scan line, the common power supply line, and/or the data line;
a pixel defining layer defining an opening portion, the opening portion formed using a backside exposure technique;
an organic layer formed on an exposed portion of the first electrode, the organic layer including at least an organic emission layer; and
a second electrode formed on the organic layer. - View Dependent Claims (19, 20)
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Specification
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Current AssigneeSamsung Display Company Limited (Samsung Electronics Co. Ltd.)
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Original AssigneeSamsung Mobile Display Company Limited (Samsung Electronics Co. Ltd.)
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InventorsOh, Sang-Hun
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current313/504
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CPC Class CodesH10K 50/805 ElectrodesH10K 59/121 characterised by the geomet...H10K 59/122 Pixel-defining structures o...H10K 59/131 Interconnections, e.g. wiri...H10K 59/805 ElectrodesH10K 71/00 Manufacture or treatment sp...
