| 摘要 |
The present invention provides a scan method of a touch signal. The different scan pulse signals with an amount corresponding to a plurality of driving lines are employed to perform scan simultaneously, and a corresponding coding is performed to each scan pulse signal; meanwhile, each of a plurality of receiving lines synchronously receives all the scan pulse signals, and a control chip is employed to decode the receiving signal received by each receiving line to determine the sources of the different signal segments in the receiving signal; as the finger touches, it is determined that the driving line corresponding to the number of the scan pulse signal is touched by the finger, and with combination of the receiving line corresponded with the receiving signal of the signal segment, of which the signal value becomes smaller, an touch position is acquired. The method can decrease an occupied period of performing scan to a touch signal by an In Cell touch control display device to increase the period of display signal scan for urging the In Cell touch control display device to be developed with higher resolution. |
| 主权项 |
1. A scan method of a touch signal, comprising steps of:
step 1, providing a touch display panel; the touch display panel comprises m horizontal driving lines which are parallel with one another and sequentially aligned, and n vertical receiving lines which are parallel with one another and sequentially aligned, wherein both m, n are integers larger than 2; step 2, employing a signal generator to simultaneously generate a different scan pulse signals to perform scan to the a driving lines simultaneously, wherein 2≦a≦m, and a falling edge of the scan pulse signal corresponding to the previous driving line and a rising edge of the scan pulse signal corresponding to the next driving line are simultaneously generated, and a corresponding coding is performed to each scan pulse signal; as the a scan pulse signals perform scan to the a driving lines simultaneously, all the receiving lines synchronously receives all the scan pulse signals provided by the a driving lines to make that each receiving line receives a receiving signal of the same signal value; step 3, employing a control chip to decode the receiving signal received by each receiving line to acquire numbers of different scan pulse signals corresponding to different signal segment in the receiving signal; step 4, as a finger touches the touch display panel, according to the numbers of the signal segment, of which the signal value becomes smaller, it is determined that the driving line corresponding to the number of the scan pulse signal is touched by the finger, and with combination of the receiving line corresponded with the receiving signal of the signal segment, of which the signal value becomes smaller, an touch position is acquired. |
