Patent ID: 11928282
Assignee: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 7:
8. A touch display device, wherein the touch display device comprises a touch panel and a touch panel driving apparatus configured for executing the operations comprising:
inputting a first scanning signal to each of the first touch electrodes at a same time, and receiving a first sensing signal of each of the second touch electrodes to determine a suspected column according to the first sensing signal;
inputting a second scanning signal to each of the second touch electrodes at a same time, and receiving a second sensing signal of each of the first touch electrodes to determine a suspected row according to the second sensing signal;
determining a suspected touch region according to the suspected column and the suspected row; and
sequentially inputting a third scanning signal row by row to each of the first touch electrodes in the suspected touch region, and receiving a third sensing signal of each of the second touch electrodes in the suspected touch region to determine a touch position according to the third sensing signal;
wherein when the suspected row is one suspected row and the suspected column is one suspected column, the operation of determining the suspected touch region according to the suspected column and the suspected row comprises:
adding a first preset value to a row number where the suspected row is located to obtain a first target row number;
subtracting a second preset value from a row number where the suspected row is located to obtain a second target row number;
adding a third preset value to a column number where the suspected column is located to obtain a first target column number;
subtracting a fourth preset value from a column number where the suspected column is located to obtain a second target column number; and
determining a region surrounded by the first target row number, the second target row number, the first target column number and the second target column number as the suspected touch region.