Display device and electoric device having the same
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorAya Miyazaki
Life of this patent
Estimating the term…
Abstract
It is an object of the present invention to provide a display device where power consumption can be suppressed and the number of gray scales can be increased without a scanning line driver circuit on both sides of a pixel portion. In a display device having a scanning line driver circuit, a shift register included in the scanning line driver circuit has 4m-stage (m is a natural number) flip-flop circuits in every m scanning lines, and a signal which selects the scanning line in a first half period of one scanning line selection period and a signal which selects the scanning line in a second half period of the one scanning line selection period are output to the scanning line by another start pulse.
Claims24
A display device comprising:
- a scanning line driver circuit;
- and
- a plurality of scanning lines electrically connected to the scanning line driver circuit,
- wherein 4k-stage (k is a natural number) flip-flop circuits corresponding to each of the plurality of scanning lines are provided in a shift register included in the scanning line driver circuit.
A display device comprising:
- a scanning line driver circuit;
- and
- m (m is a natural number of greater than or equal to 2) scanning lines electrically connected to the scanning line driver circuit,
- wherein 4k-stage (k is a natural number) flip-flop circuits corresponding to each of first to (m−1)-th scanning lines are provided, and at least one-stage flip-flop circuit corresponding to m-th scanning line is provided, in a shift register included in the scanning line driver circuit.
A display device comprising:
- a plurality of pixels:
- a signal line driver circuit electrically connected to the plurality of pixels;
- a scanning line driver circuit electrically connected to the plurality of pixels;
- and
- a plurality of scanning lines electrically connected to the scanning line driver circuit,
- wherein 4k-stage (k is a natural number) flip-flop circuits corresponding to each of the plurality of scanning lines are provided in a shift register included in the scanning line driver circuit.
A display device comprising:
- a plurality of pixels:
- a signal line driver circuit electrically connected to the plurality of pixels;
- a scanning line driver circuit electrically connected to the plurality of pixels;
- and
- m (m is a natural number of greater than or equal to 2) scanning lines electrically connected to the scanning line driver circuit,
- wherein 4k-stage (k is a natural number) flip-flop circuits corresponding to each of first to (m−1)-th scanning lines are provided, and at least one-stage flip-flop circuit corresponding to m-th scanning line is provided, in a shift register included in the scanning line driver circuit.
Dependencies are inferred from the claim text.