| 摘要 |
This invention provides a liquid crystal display device having high display quality by preventing rays of light diffracted at an end part of a light shielding layer because such rays are irradiated to a semiconductor layer and invite fluctuation of TFT characteristics. To completely cut off the rays of light 117 diffracted at an end part of a third light shielding layer 108, a gate electrode 104 and a second light shielding portion 106 cover a semiconductor layer 103. In consequence, the irradiation of the rays of diffracted light can be prevented, fluctuation of TFT characteristics can be avoided and satisfactory display images can be acquired.
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