ARRAY SUBSTRATE AND DISPLAY DEVICE AND METHOD FOR MAKING THE ARRAY SUBSTRATE
First Claim
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1. An array substrate comprising:
- a substrate;
a first TFT on the substrate, the first TFT being a metal oxide TFT; and
a second TFT on the substrate, the second TFT being a low-temperature poly silicon TFT, the second TFT comprising a poly-silicon semiconductor layer, a buffer layer, a gate, and a gate insulator layer stacked on the substrate in that order, and a source electrode and a drain electrode passing through both the buffer layer and the gate insulator layer and coupled to the metal oxide semiconductor layer of the second TFT;
wherein the first TFT comprises a buffer layer, a gate, a gate insulator layer and a metal oxide semiconductor layer stacked on the substrate in that order, and a source electrode and a drain electrode separately positioned on the gate insulator layer and coupled to the metal oxide semiconductor layer of the first TFT;
the metal oxide semiconductor layer partially covers the source electrode and the drain electrode of the first TFT.
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Abstract
An array substrate includes a substrate, and a first TFT and a second TFT on the substrate. The second TFT is a low-temperature poly silicon TFT. The first TFT includes a buffer layer, a gate, a gate insulator layer, and a metal oxide semiconductor layer stacked on the substrate in that order. A source electrode and a drain electrode are separately positioned on the gate insulator layer and coupled to the metal oxide semiconductor layer of the first TFT. The metal oxide semiconductor layer partially covers the source electrode and the drain electrode.
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Citations
19 Claims
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1. An array substrate comprising:
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a substrate; a first TFT on the substrate, the first TFT being a metal oxide TFT; and a second TFT on the substrate, the second TFT being a low-temperature poly silicon TFT, the second TFT comprising a poly-silicon semiconductor layer, a buffer layer, a gate, and a gate insulator layer stacked on the substrate in that order, and a source electrode and a drain electrode passing through both the buffer layer and the gate insulator layer and coupled to the metal oxide semiconductor layer of the second TFT; wherein the first TFT comprises a buffer layer, a gate, a gate insulator layer and a metal oxide semiconductor layer stacked on the substrate in that order, and a source electrode and a drain electrode separately positioned on the gate insulator layer and coupled to the metal oxide semiconductor layer of the first TFT;
the metal oxide semiconductor layer partially covers the source electrode and the drain electrode of the first TFT. - View Dependent Claims (2, 3, 4, 5)
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6. An array substrate comprising:
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a substrate; a switch TFT on the substrate, the switch TFT being a metal oxide TFT; a driving TFT on the substrate, the driving TFT being a metal oxide TFT; and a poly silicon TFT on the substrate, the poly silicon TFT comprising a poly-silicon semiconductor layer, a buffer layer, a gate, and a gate insulator layer stacked on the substrate in that order, and a source electrode and a drain electrode passing through both the buffer layer and the gate insulator layer and coupled to the metal oxide semiconductor layer of the second TFT, wherein the switch TFT comprises a buffer layer, a gate, a gate insulator layer and a metal oxide semiconductor layer stacked on the substrate in that order, and a source electrode and a drain electrode separately positioned on the gate insulator layer and coupled to the metal oxide semiconductor layer of the switch TFT;
the metal oxide semiconductor layer of the switch TFT covers the source electrode and the drain electrode of the switch TFT; andwherein the driving TFT comprises a buffer layer, a gate, a gate insulator layer and a metal oxide semiconductor layer stacked on the substrate in that order, and a source electrode and a drain electrode separately positioned on the gate insulator layer and coupled to the metal oxide semiconductor layer of the driving TFT;
the metal oxide semiconductor layer of the driving TFT covers the source electrode and the drain electrode of the driving TFT. - View Dependent Claims (7, 8, 9, 10)
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11. A display device comprising:
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an array substrate comprising; a substrate; a first TFT on the substrate, the first TFT being a metal oxide TFT; and a second TFT on the substrate, the second TFT being a low-temperature poly silicon TFT, the second TFT comprising a poly-silicon semiconductor layer, a buffer layer, a gate, and a gate insulator layer stacked on the substrate in that order, and a source electrode and a drain electrode passing through both the buffer layer and the gate insulator layer and coupled to the metal oxide semiconductor layer of the second TFT; wherein the first TFT comprises a buffer layer, a gate, a gate insulator layer and a metal oxide semiconductor layer stacked on the substrate in that order, and a source electrode and a drain electrode separately positioned on the gate insulator layer and coupled to the metal oxide semiconductor layer of the first TFT;
the metal oxide semiconductor layer partially covers the source electrode and the drain electrode. - View Dependent Claims (12, 13, 14, 15)
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16. A method for making an array substrate comprising:
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forming a poly-silicon semiconductor layer on a substrate; forming a buffer layer on the poly-silicon semiconductor layer and the substrate; depositing a first metal layer and patterning the first metal layer to form a first gate electrode and a second gate electrode, the first gate electrode corresponding to the poly-silicon semiconductor layer; forming a gate insulator layer covering the first gate electrode and the second gate electrode; defining a first hole and a second hole passing through the buffer layer and the gate insulator layer to expose the poly-silicon semiconductor layer; depositing a second metal layer on the gate insulator layer and patterning the second metal layer to form a first source electrode in the first hole and a first drain electrode in the second through hole, a second source electrode and a second drain electrode on the gate insulator layer; and depositing a metal oxide layer on the gate insulator layer and patterning the metal oxide layer to form a metal oxide semiconductor layer coupled to the second source electrode and the second drain electrode. - View Dependent Claims (17, 18, 19)
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Specification