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1. (WO2018104831) DISPLAY DEVICE AND METHOD FOR OPERATING THE SAME

Pub. No.:    WO/2018/104831    International Application No.:    PCT/IB2017/057561
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Sat Dec 02 00:59:59 CET 2017
IPC: G09G 3/20
G06F 3/041
G06F 3/044
G09G 3/3266
G09G 3/36
Applicants: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventors: TAKAHASHI, Kei
Title: DISPLAY DEVICE AND METHOD FOR OPERATING THE SAME
Abstract:
A display device which achieves both a high-accuracy sensing operation and smooth input in a touch sensor unit is provided. The display device includes a display unit and the touch sensor unit. The touch sensor unit performs a touch sensing operation when the display unit does not perform a display image rewriting operation; thus, a highly accurate sensing operation is possible. A gate driver of the display unit includes a first circuit and a second circuit. The second circuit includes a plurality of shift registers. Only a display image of a region that needs to be rewritten can be rewritten. The first circuit is a shift register and designates a shift register from the plurality of shift registers included in the second circuit to operate. In the case where an image in the entire display region does not need to be rewritten, the time assigned for the sensing operation of the touch sensor unit increases, leading to the smooth input.