THIN-FILM TRANSISTOR ARRAY SUBSTRATE, ORGANIC LIGHT-EMITTING DISPLAY INCLUDING THE SAME, AND METHOD OF MANUFACTURING THE SAME
First Claim
1. A thin-film transistor array substrate comprising:
- a thin-film transistor comprising an active layer, a gate electrode, a source electrode, and a drain electrode;
a lower electrode of a capacitor formed of the same layer as the active layer;
an upper electrode of the capacitor formed on the lower electrode;
a first insulation layer formed between the lower and upper electrodes, and formed between the active layer and the gate electrode, wherein a gap is formed outside the lower electrode;
a second insulation layer formed on the first insulation layer and having the same etching surface as the first insulation layer in the gap;
a bridge formed of the same material as at least one of the source and drain electrodes, wherein the bridge at least partially fills the gap;
a pixel electrode formed of the same material as the upper electrode; and
a third insulation layer covering the source and drain electrodes, wherein an opening is defined in the third insulation layer, and wherein at least part of the pixel electrode is formed in the opening.
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Accused Products
Abstract
A thin-film transistor array substrate is disclosed. In one embodiment, the substrate includes: i) a thin-film transistor including an active layer, and gate, source and drain electrodes, ii) a lower electrode of a capacitor, iii) an upper electrode of the capacitor formed on the lower electrode iv) a first insulation layer between the lower and upper electrodes, and between the active layer and the gate electrode, and having a gap outside the lower electrode. The substrate may further include i) a second insulation layer formed on the first insulation layer and having the same etching surface as the first insulation layer in the gap, ii) a bridge formed of the same material as the source and drain electrodes, and filling a part of the gap and iii) a third insulation layer covering the source and drain electrodes and exposing a pixel electrode.
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Citations
29 Claims
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1. A thin-film transistor array substrate comprising:
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a thin-film transistor comprising an active layer, a gate electrode, a source electrode, and a drain electrode; a lower electrode of a capacitor formed of the same layer as the active layer; an upper electrode of the capacitor formed on the lower electrode; a first insulation layer formed between the lower and upper electrodes, and formed between the active layer and the gate electrode, wherein a gap is formed outside the lower electrode; a second insulation layer formed on the first insulation layer and having the same etching surface as the first insulation layer in the gap; a bridge formed of the same material as at least one of the source and drain electrodes, wherein the bridge at least partially fills the gap; a pixel electrode formed of the same material as the upper electrode; and a third insulation layer covering the source and drain electrodes, wherein an opening is defined in the third insulation layer, and wherein at least part of the pixel electrode is formed in the opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An organic light-emitting display comprising:
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a thin-film transistor comprising an active layer, a gate electrode, a source electrode, and a drain electrode; a lower electrode of a capacitor formed of the same layer as the active layer; an upper electrode of the capacitor formed on the lower electrode; a first insulation layer formed between the lower and upper electrodes, and formed between the active layer and the gate electrode, wherein a gap is formed outside the lower electrode; a second insulation layer formed on the first insulation layer and having the same etching surface as the first insulation layer; a bridge formed of the same material as the source and drain electrodes, wherein the bridge at least partially fills the gap; a pixel electrode formed of the same material as the upper electrode; a third insulation layer covering the source and drain electrodes, wherein an opening is defined in the third insulation layer, and wherein at least part of the pixel electrode is formed in the opening; an organic light-emitting layer formed on the pixel electrode; and a counter electrode formed on the organic light-emitting layer. - View Dependent Claims (17, 18, 19)
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20. A method of manufacturing a thin-film transistor array substrate, the method comprising:
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forming a semiconductor layer on a substrate and forming an active layer of a thin-film transistor and a lower electrode of a capacitor by patterning the semiconductor layer; forming a first insulation layer, forming a first metal layer on the first insulation layer, and forming an etch stop layer corresponding to the lower electrode and a gate electrode corresponding to a portion of the active layer based on patterning the first metal layer; forming a second insulation layer, and etching the first and second insulation layers such that a gap exposing the etch stop layer and an opening exposing a portion of the active layer are formed; forming a second metal layer, and forming a bridge filing a portion of the gap and source and drain electrodes substantially filling the opening of the active layer based on patterning the second metal layer; forming a third metal layer, and forming a pixel electrode and an upper electrode of the capacitor based on patterning the third metal layer; and forming a third insulation layer, and forming an opening which exposes the pixel electrode. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification