Patent ID: 7538753

Claim:
A display device comprising: a pixel portion where pixels are arranged in matrix of m rows by n columns; a source driver circuit, wherein the source driver circuit comprises a first scanning circuit which outputs at least n stages of sampling pulses and includes n switches, and wherein the first scanning circuit is configured to operate so that a first operation in which sampling pulses are sequentially outputted from the first stage up to the n-th stage is performed and a second operation in which sampling pulses are sequentially outputted from the a-th (a is a natural number and 1<a≦n) stage up to the b-th (b is a natural number and a≦b≦n) stage is performed; a gate driver circuit, wherein the gate driver circuit comprises a second scanning circuit which outputs at least m stages of row selection pulses and includes m switches, and wherein the second scanning circuit is configured to operate so that a first operation in which row selection pulses are sequentially outputted from the first stage up to the m-th stage is performed and a second operation in which row selection pulses are sequentially outputted from the c-th (c is a natural number and 1<c≦m) stage up to the d-th (d is a natural number and c≦d≦m) stage is performed, wherein the a-th (a is a natural number and 1<a≦n) switch is provided at an input terminal of the a-th stage and the a-th switch selects an input of a start pulse in the second operation, wherein the c-th (c is a natural number and 1<c≦m) switch is provided at an input terminal of the c-th stage and the c-th switch selects an input of a start pulse in the second operation, wherein an image by the first operation remains at the second operation except from the a-th stage to the b-th stage and from the c-th stage to the d-th stage, and wherein each of the n switches except for a first switch is configured to select an input between a start pulse and an output pulse of the previous stage.