Liquid crystal display device with high aperture ratio having a metal layer and a storage electrode entirely overlapped with a common electrode
First Claim
1. An in-plane switching (IPS) mode liquid crystal display(LCD) device, comprising:
- first and second substrates;
a plurality of gate lines and data lines arranged horizontally and vertically to define a plurality of pixel regions on the first substrate;
a switching device, having a gate electrode, a semiconductor layer and source and drain electrodes, at each crossing of the gate lines and the data lines;
a passivation film on an entire surface of the first substrate including the switching device;
a common electrode and a pixel electrode arranged in an alternating pattern at an upper portion of the passivation film, wherein the pixel electrode is connected to the drain electrode to generate an in-plane electric field between the common and pixel electrodes by an signal from the drain electrode;
at least one metal layer on a same layer as the gate line; and
at least one first storage electrode on a same layer as the data line and overlapping the metal layer;
a liquid crystal layer between the first and second substrates,wherein the metal layer and the first storage electrode are disposed below the common electrode so that the metal layer and the first storage electrode are entirely overlapped with the common electrode.
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Accused Products
Abstract
Disclosed is an in-plane switching (IPS) mode liquid crystal display (LCD) device having an increased aperture ratio by overlapping a storage capacitor on a lower end of an electrode. The (IPS) mode liquid crystal display device (LCD) device includes first and second substrates; a gate line and a data line arranged horizontally and vertically to define a plurality of pixel regions on the first substrate; a switching device, having a gate electrode, a semiconductor layer and source and drain electrodes, at a crossing of the gate line and the data line; a passivation film on an entire surface of the first substrate including the switching device; a common electrode and a pixel electrode alternately disposed at an upper portion of the passivation film and generating an in-plane electric field, wherein at least one of the common and pixel electrodes has a first storage capacitor at its lower end; and a liquid crystal layer between the first and second substrates.
37 Citations
18 Claims
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1. An in-plane switching (IPS) mode liquid crystal display(LCD) device, comprising:
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first and second substrates; a plurality of gate lines and data lines arranged horizontally and vertically to define a plurality of pixel regions on the first substrate; a switching device, having a gate electrode, a semiconductor layer and source and drain electrodes, at each crossing of the gate lines and the data lines; a passivation film on an entire surface of the first substrate including the switching device; a common electrode and a pixel electrode arranged in an alternating pattern at an upper portion of the passivation film, wherein the pixel electrode is connected to the drain electrode to generate an in-plane electric field between the common and pixel electrodes by an signal from the drain electrode; at least one metal layer on a same layer as the gate line; and at least one first storage electrode on a same layer as the data line and overlapping the metal layer; a liquid crystal layer between the first and second substrates, wherein the metal layer and the first storage electrode are disposed below the common electrode so that the metal layer and the first storage electrode are entirely overlapped with the common electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for fabricating an in-plane switching (IPS) mode liquid crystal display (LCD) device, comprising:
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preparing first and second substrates; forming at least one first storage capacitor on the first substrate; forming a passivation film on the first substrate with at least one storage capacitor formed thereon; forming a common electrode and a pixel electrode at a region on the passivation film corresponding to the storage capacitor, the pixel electrode being connected to the drain electrode to generate an in-plane electric field between the common and pixel electrodes by an signal from the drain electrode; and forming a liquid crystal layer between the first and second substrates, wherein the storage capacitor includes at least one metal layer on a same layer as the gate line and at least one first storage electrode on a same layer as the data line and overlapping the metal layer, the metal layer and the first storage electrode are disposed below the common electrode so that the metal layer and the storage electrode are entirely overlapped with the common electrode. - View Dependent Claims (18)
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Specification