Patent ID: 11947754
Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 17:
18. The display device in claim 11, wherein when the capacitive touch screen is not touched, the charge in the corresponding touch detection region detected through the plurality of touch sensing units is:

Q1=Ci*Vcom

wherein Q1 is the charge when the plurality of touch detection regions are not touched, Ci is a capacitance value of a reference capacitor, and Vcom is a potential of a common electrode of an array substrate or a potential of one of the plurality of common electrode lines; and
the output voltage read through the plurality of reading unit is:

Vout1=Ci*Vcom/Cf 

wherein, Vout1 is the output voltage of the plurality of read units when the plurality of touch detection regions are not touched, and Cf is a feedback capacitance of an integrator.