Array substrate for liquid crystal display device and method of fabricating the same
A technology for liquid crystal display devices and array substrates, which can be applied in the photoengraving process of the pattern surface, the manufacture of semiconductor/solid-state devices, optics, etc., and can solve the problems of reduction of storage capacitance and reduction of aperture ratio.
Active Publication Date: 2008-04-23
LG DISPLAY CO LTD
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Problems solved by technology
However, in this case, since the thickness of the insulating layer made of an organic insulating material is greater than that of an insulating layer made of an inorganic insulating material, the storage capacitance is reduced with the same area of the storage electrode.
In order to have the same storage capacitance, the aperture ratio is reduced due to the larger area of the electrodes
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[0028] Reference will now be made in detail to the preferred embodiments, examples of which are illustrated in the accompanying drawings.
[0029] figure 2 is a plan view of one pixel region of an array substrate for an LCD device including an organic semiconductor layer according to the present invention.
[0030] Such as figure 2 As shown, a gate line 146 , a data line 110 , a TFT “Tr”, a pixel electrode 123 and a storage capacitor “StgC” are formed on the substrate 101 . The substrate 101 may be one of a glass plate and a plastic plate. The gate line 146 and the data line 110 cross each other to define a pixel region 'P'. The TFT "Tr" is formed at the intersection of the gate line 146 and the data line 110 and is connected to the pixel electrode 123 . The TFT “Tr” includes a source 113 , a drain 118 , a gate 149 and an organic semiconductor layer 128 . The source electrode 113 extends from the data line 110 and is separated from the drain electrode 118 . The organic s...
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An array substrate for a liquid crystal display device includes a data line formed on a substrate including a pixel region; a source electrode extending from the data line; a drain electrode separated from the source electrode; a pixel electrode contacting the drain electrode and formed of a transparent conductive material in the pixel region; an organic semiconductor layer on the source and drain electrodes; a first gate insulating layer of an organic insulating material on the organic semiconductor layer; a second gate insulting layer of an inorganic insulating material on entire surface of the substrate including the first gate insulating layer; a gate line formed on the second gate insulating layer and crossing the data line to define the pixel region; and a gate electrode on the second gate insulating layer extending from the gate line and corresponding to the organic semiconductor layer.
Description
technical field [0001] The present invention relates to a liquid crystal display (LCD) device, and more particularly, to an array substrate for an LCD device having a semiconductor layer made of an organic semiconductor material. Background technique [0002] LCD devices have been widely used as a substitute for cathode ray tube type display devices due to their light weight, thin thickness, and low power consumption characteristics. [0003] The LCD device displays images using optical anisotropy and polarization characteristics of liquid crystal molecules. The thin and long shape of the liquid crystal molecules causes their alignment to be directional. Therefore, the alignment direction of the liquid crystal molecules can be controlled by applying an electric field to them. In particular, LCD devices including thin film transistors (TFTs) as switching elements (referred to as active matrix LCD (AM-LCD) devices) have high resolution and excellent characteristics of displa...
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IPC IPC(8): G02F1/1362G03F7/00H01L21/00H10N10/856
CPCH01L51/0541H01L51/0529G02F1/1362G02F2202/02H01L51/0036H10K85/113H10K10/474H10K10/464G02F1/136
Inventor 梁埈荣
Owner LG DISPLAY CO LTD