Active matrix type liquid crystal display device having particular positioning reference pattern and fabrication method thereof
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United States of America Patent
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-
Jun 1, 2004
Grant Date -
Dec 19, 2002
app pub date -
Apr 9, 2002
filing date -
Apr 17, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
In an in-plane switching (IPS) mode active matrix type liquid crystal display device, data lines 24 supplied with data signals, common electrode wiring portions 26a and 26b applied with a reference voltage, a common electrode 26, pixel electrodes corresponding to pixels to be displayed, scanning lines 28 supplied with scan signals and TFT's 50 are provided on an active element substrate 11. The common electrode wiring portions 26a and 26b are formed by using a first metal layer, extend in parallel to the scanning line and connected to a common electrode potential at a peripheral portion thereof. Protruded portions 299a and 299b are formed in at least one of the common electrode wiring portions 26a and 26b in such a way that the protruded portions are positioned on both sides of the data line 24 to be formed later. Unevenness of display of the display device is reduced and the aperture ratio thereof is improved.
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