Electro-optic device and electronic apparatus
An electro-optic device includes a shift register and another circuit. Source and drain regions of transistors in the shift register contain the same kind of impurity as that contained in the source and drain regions of transistors in the other circuit and contain a higher concentration of the impurity than a concentration of the impurity in the source and drain regions of transistors in the other circuit.
1. An electro-optic device comprising:
a substrate;
a plurality of data lines and a plurality of scanning lines arranged on the substrate such that the data lines intersect the scanning lines;
a plurality of pixel units arranged for pixels corresponding to intersections between the data lines and the scanning lines; and
an image signal supply circuit including a shift register that sequentially outputs transferred signals and another circuit that supplies image signals to the pixel units via the data lines in response to the sequentially output transferred signals output from the shift register, the shift register including a plurality of first transistors each including a first semiconductor layer having a first source region and a first drain region, the other circuit including a plurality of second transistors each including a second semiconductor layer having a second source region and a second drain region, wherein
the second source and drain regions contain the same kind of impurity as that contained in the first source and drain regions and contain a higher concentration of the impurity than a concentration of the impurity in the first source and drain regions,
wherein the other circuit includes:
an enable circuit that shapes the waveforms of the sequentially output transferred signals using a plurality of enable signals to output the resultant signals as shaped signals; and
a sampling circuit that samples the image signals in response to the shaped signals or signals based on the shaped signals to supply the sampled signals to the data lines.
2. An electronic apparatus comprising the electro-optic device according to claim 1 .
3. An electro-optic device comprising:
a substrate;
a plurality of data lines and a plurality of scanning lines arranged on the substrate such that the data lines intersect the scanning lines;
a plurality of pixel units arranged for pixels corresponding to intersections between the data lines and the scanning lines; and
an image signal supply circuit including a shift register that sequentially outputs transferred signals and another circuit that supplies image signals to the pixel units via the data lines in response to the sequentially output transferred signals, the shift register including a plurality of first transistors each including a first semiconductor layer having a first channel region, a first source region, a first drain region, and first LDD regions formed such that one of the first LDD regions is disposed between the first channel region and the first source region and the other is disposed between the first channel region and the first drain region, the other circuit including a plurality of second transistors each including a second semiconductor layer having a second channel region, a second source region, a second drain region, and second LDD regions formed such that one of the second LDD regions is disposed between the second channel region and the second source region and the other is disposed between the second channel region and the second drain region, wherein
the second LDD regions contain the same kind of impurity as that contained in the first LDD regions and contain a higher concentration of the impurity than a concentration of the impurity in the first LDD regions,
wherein the other circuit includes:
an enable circuit that shapes the waveforms of the sequentially output transferred signals using a plurality of enable signals to output the resultant signals as shaped signals; and
a sampling circuit that samples the image signals in response to the shaped signals or signals based on the shaped signals to supply the sampled signals to the data lines.