THIN FILM TRANSISTOR SUBSTRATE AND ORGANIC LIGHT-EMITTING DISPLAY USING THE SAME
First Claim
1. A thin film transistor substrate, comprising:
- a substrate;
a lower gate electrode arranged over the substrate;
a semiconductor layer arranged over the substrate and overlapping the lower gate electrode, the semiconductor layer including a channel region interposed between a source region and a drain region; and
an upper gate electrode arranged over the semiconductor layer and overlapping the semiconductor layer and the lower gate electrode, wherein at least one of the lower gate electrode and the upper gate electrode is perforated by a through hole.
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Accused Products
Abstract
A thin film transistor substrate that includes a substrate, a lower gate electrode arranged on the substrate, a semiconductor layer arranged on the substrate and overlapping the lower gate electrode, the semiconductor layer including a channel region interposed between a source region and a drain region, and an upper gate electrode arranged on the substrate and overlapping the semiconductor layer, the upper gate electrode being arranged on an opposite side of the semiconductor layer than the lower gate electrode, wherein at least one of the lower gate electrode and the upper gate electrode is perforated by an aperture to reduce a parasitic capacitance between the upper and lower gate electrodes.
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Citations
20 Claims
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1. A thin film transistor substrate, comprising:
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a substrate; a lower gate electrode arranged over the substrate; a semiconductor layer arranged over the substrate and overlapping the lower gate electrode, the semiconductor layer including a channel region interposed between a source region and a drain region; and an upper gate electrode arranged over the semiconductor layer and overlapping the semiconductor layer and the lower gate electrode, wherein at least one of the lower gate electrode and the upper gate electrode is perforated by a through hole. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An organic light-emitting display apparatus comprising a plurality of pixels over a substrate, wherein each of the pixels comprises:
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a switching thin film transistor arranged over the substrate; a driving thin film transistor arranged over the substrate and electrically connected to the switching thin film transistor; a pixel electrode connected to the driving thin film transistor; an emission layer arranged over the pixel electrode; and an opposite electrode facing the pixel electrode, the emission layer being interposed between the pixel electrode and the opposite electrode, wherein the driving thin film transistor comprises; a lower gate electrode arranged over the substrate; a semiconductor layer arranged over the substrate and overlapping the lower gate electrode, the semiconductor layer including a channel region interposed between a source region and a drain region; and an upper gate electrode arranged over the semiconductor layer and overlapping the semiconductor layer and the lower gate electrode, wherein at least one of the lower gate electrode and the upper gate electrode is perforated by an aperture. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification