US 11,789,562 B2
Touch screen detection chip combination and terminal device
Weiping Liu, Guangdong (CN); Shen Chia Huang, Guangdong (CN); and Hepeng Su, Guangdong (CN)
Assigned to FOCALTECH ELECTRONICS, LTD., Guangdong (CN)
Appl. No. 17/440,288
Filed by FOCALTECH ELECTRONICS, LTD., Guangdong (CN)
PCT Filed Mar. 4, 2020, PCT No. PCT/CN2020/077692
§ 371(c)(1), (2) Date Sep. 17, 2021,
PCT Pub. No. WO2020/192371, PCT Pub. Date Oct. 1, 2020.
Claims priority of application No. 201910223151.6 (CN), filed on Mar. 22, 2019.
Prior Publication US 2022/0147218 A1, May 12, 2022
Int. Cl. G06F 3/041 (2006.01)
CPC G06F 3/04166 (2019.05) 10 Claims
OG exemplary drawing
 
1. A touch screen detection chip combination, comprising a master detection chip and a slave detection chip, wherein
the master detection chip and the slave detection chip are configured to process touch signals of different regions of a touch screen;
the master detection chip is connected to the slave detection chip;
the master detection chip is configured to control the slave detection chip to perform touch signal process on the touch screen;
each of the master detection chip and the slave detection chip is arranged with a potential pin;
the master detection chip is configured to receive a first potential via the potential pin of the master detection chip, and the slave detection chip is configured to receive a second potential via the potential pin of the salve detection chip;
the first potential is different from the second potential;
each of the master detection chip and the slave detection chip is arranged with a start signal output pin, a start signal input pin, a clock signal output pin, and a clock signal input pin;
the start signal output pin of the master detection chip is connected to a middle position between the master detection chip and the slave detection chip adjacent to the master detection chip, and then is connected to the start signal input pin of the master detection chip and the start signal input pin of the slave detection chip, the master detection chip is configured to perform touch detection after receiving a start signal, and the slave detection chip performs touch detection after receiving a start signal; and
the clock signal output pin of the master detection chip is connected to a middle position between the master detection chip and the slave detection chip adjacent to the master detection chip, and then is connected to the clock signal input pin of the master detection chip and the clock signal input pin of the slave detection chip, the master detection chip performs touch detection after receiving a clock signal, and the slave detection chip performs touch detection at a same frequency as the master detection chip after receiving a clock signal.