Display device and method of manufacturing the same
First Claim
1. A display device, comprising:
- a substrate having a pixel region, a transistor region and a capacitor region;
a transistor arranged within the transistor region of the substrate; and
a capacitor arranged within the capacitor region of the substrate, wherein the capacitor comprises;
a lower electrode arranged on the substrate;
a gate insulating layer arranged on the lower electrode; and
an upper electrode arranged on the gate insulating layer and overlapping the lower electrode, the upper electrode including a first conductive layer and a second conductive layer arranged on the first conductive layer, wherein the first conductive layer is opaque,wherein the first conductive layer of the upper electrode comprises an impurity,the transistor comprises a gate electrode that includes a second conductive layer arranged on a first conductive layer, the first conductive layer comprising an impurity; and
a concentration of the impurity within the first conductive layer of the gate electrode is lower than that of the concentration of the impurity within the first conductive layer of the lower electrode.
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Abstract
A display device and a method of manufacturing the same. In one embodiment, a display device includes a substrate having a pixel region, a transistor region and a capacitor region, a transistor arranged within the transistor region of the substrate and a capacitor arranged within the capacitor region of the substrate, wherein the capacitor includes a lower electrode arranged on the substrate, a gate insulating layer arranged on the lower electrode and an upper electrode arranged on the gate insulating layer and overlapping the lower electrode, the upper electrode includes a first conductive layer and a second conductive layer arranged on the first conductive layer, wherein the first conductive layer is opaque.
32 Citations
16 Claims
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1. A display device, comprising:
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a substrate having a pixel region, a transistor region and a capacitor region; a transistor arranged within the transistor region of the substrate; and a capacitor arranged within the capacitor region of the substrate, wherein the capacitor comprises; a lower electrode arranged on the substrate; a gate insulating layer arranged on the lower electrode; and an upper electrode arranged on the gate insulating layer and overlapping the lower electrode, the upper electrode including a first conductive layer and a second conductive layer arranged on the first conductive layer, wherein the first conductive layer is opaque, wherein the first conductive layer of the upper electrode comprises an impurity, the transistor comprises a gate electrode that includes a second conductive layer arranged on a first conductive layer, the first conductive layer comprising an impurity; and a concentration of the impurity within the first conductive layer of the gate electrode is lower than that of the concentration of the impurity within the first conductive layer of the lower electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A display device, comprising:
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a substrate having a pixel region, a transistor region and a capacitor region; a transistor arranged within the transistor region of the substrate and including a gate insulating layer interposed between a gate electrode and an active layer; and a capacitor arranged within the capacitor region of the substrate, wherein the capacitor comprises; a lower electrode arranged directly on a same layer and being comprised of a same material as the active layer of the transistor; and an upper electrode arranged directly on a same layer and being comprised of same materials as the gate electrode of the transistor, wherein the gate insulating layer is also interposed between the upper electrode and the lower electrode, wherein each of the gate electrode and the upper electrode are comprised of a first conductive layer and a second conductive layer arranged on the first conductive layer, the first conductive layer being opaque and having a thickness in the range of about 200 to 700 Å
, wherein an opening is arranged in the second conductive layer of the upper electrode of the capacitor to expose the first conductive layer, wherein the first conductive layer of the upper electrode and the lower electrode of the capacitor are doped with a same impurity, the first conductive layer being comprised of at least one of chrome and molybdenum. - View Dependent Claims (15, 16)
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Specification