Display device
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsHongyong Zhang, Satoshi Teramoto
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Abstract
The present invention provides an active matrix type display device having a high aperture ratio and a required auxiliary capacitor. A source line and a gate line are overlapped with part of a pixel electrode. This overlapped region functions to be a black matrix. Further, an electrode pattern made of the same material as the pixel electrode is disposed to form the auxiliary capacitor by utilizing the pixel electrode. It allows a required value of auxiliary capacitor to be obtained without dropping the aperture ratio. Also, it allows the electrode pattern to function as a electrically shielding film for suppressing the cross-talk between the source and gate lines and the pixel electrode.
Claims1
An active matrix type display device, comprising:
- an electrode pattern made of a conductive film disposed between source and gate lines and a pixel electrode;
- and
- an auxiliary capacitor formed between said electrode pattern and said pixel electrode.
Dependencies are inferred from the claim text.