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US 8,283,860 B2Granted
Organic light emitting display device and method of fabricating the same
AssigneeSamsung Display Co., Ltd.
InventorSang-Hun Oh
Life of this patent
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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.
Claims11
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,
- wherein a width between parallel and facing edges of the opening portion corresponds to a distance between facing edges of the common power supply line and the data line, and
- wherein at least one of the scan line, the data line, or the common power supply line is configured to define a portion of a mask for forming the opening portion;
- 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.
10 more elements
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, wherein a width between parallel and facing edges of the opening portion corresponds to a distance between facing edges of the common power supply line and the data line;
- 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.
8 more elements
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, wherein at least one of the scan line, the data line, or the common power supply line is configured to define a portion of a mask for forming the opening portion;
- 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.
8 more elements
Dependencies are inferred from the claim text.