PIXEL OF A LIQUID CRYSTAL PANEL, METHOD OF FABRICATING THE SAME AND DRIVING METHOD THEREOF
First Claim
1. A method of fabricating a pixel structure of a liquid crystal display panel, comprising:
- forming a polysilicon layer over a first substrate;
patterning the polysilicon layer to form a polysilicon island, wherein the polysilicon island has an active device region and a storage capacitor region;
implanting ions into the storage capacitor region of the polysilicon island to form a bottom electrode;
forming a gate-insulating layer over the polysilicon island;
forming a gate over the gate insulating layer within the active device region and forming a top electrode over the gate insulating layer within the storage capacitor region;
implanting ions into the active device region of the polysilicon island using the gate as an implant mask to form a source and a drain;
forming an insulating layer over the gate-insulating layer to cover the gate and the top electrode;
forming a pixel electrode over the insulating layer, wherein the pixel electrode is electrically connected to the drain and the bottom electrode;
providing a second substrate;
forming an electrode film over the second substrate, wherein the electrode film and the top electrode are electrically connected to a common electrode; and
forming a liquid crystal layer between the first substrate and the second substrate.
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Abstract
A method of fabricating a pixel of a liquid crystal display panel is described. A polysilicon island having an active device region and a storage capacitor region is formed over a first substrate. A bottom electrode is formed by implanting ions into the storage capacitor region of the polysilicon island. A gate-insulating layer is formed over the polysilicon island. A gate and a top electrode are formed over the gate-insulating layer. A source and a drain are formed in the polysilicon island. An insulating layer is formed over the gate-insulating layer. A pixel electrode is formed over the insulating layer and electrically connected with the drain and the bottom electrode. A second substrate having an electrode film thereon is provided. The electrode film and the top electrode are electrically connected to a common electrode. A liquid crystal layer is formed between the first and the second substrate.
30 Citations
16 Claims
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1. A method of fabricating a pixel structure of a liquid crystal display panel, comprising:
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forming a polysilicon layer over a first substrate;
patterning the polysilicon layer to form a polysilicon island, wherein the polysilicon island has an active device region and a storage capacitor region;
implanting ions into the storage capacitor region of the polysilicon island to form a bottom electrode;
forming a gate-insulating layer over the polysilicon island;
forming a gate over the gate insulating layer within the active device region and forming a top electrode over the gate insulating layer within the storage capacitor region;
implanting ions into the active device region of the polysilicon island using the gate as an implant mask to form a source and a drain;
forming an insulating layer over the gate-insulating layer to cover the gate and the top electrode;
forming a pixel electrode over the insulating layer, wherein the pixel electrode is electrically connected to the drain and the bottom electrode;
providing a second substrate;
forming an electrode film over the second substrate, wherein the electrode film and the top electrode are electrically connected to a common electrode; and
forming a liquid crystal layer between the first substrate and the second substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A pixel structure for a liquid crystal display panel, comprising:
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a first substrate;
a single-type low temperature polysilicon thin film transistor disposed over the first substrate;
a pixel structure disposed over the first substrate and electrically connected to the single-type low temperature polysilicon thin film transistor;
a storage capacitor disposed over the first substrate, wherein one of the terminals of the storage capacitor is electrically connected to the single-type low temperature polysilicon thin film transistor and the storage capacitor is regarded as a symmetrical capacitor related to the single-type low temperature polysilicon thin film transistor;
a second substrate disposed over the first substrate;
an electrode film disposed on the second substrate;
a liquid crystal layer disposed between the first substrate and the second substrate; and
a liquid crystal capacitor disposed between the first substrate and the second substrate, wherein one of the terminals of the liquid crystal capacitor is electrically connected to the single-type low temperature polysilicon thin film transistor while the other terminal of the liquid crystal capacitor and the other terminal of the storage capacitor are electrically connected to a common electrode. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification