Patent ID: 9563312
Date: 2017-02-07
CPC Classifications: G02F,G06F,G09G

Claim:
1. A display panel having a touch function, comprising: a first substrate; a second substrate disposed oppositely to the first substrate; and a liquid crystal layer disposed between the first substrate and the second substrate; wherein, first substrate includes multiple scanning lines, multiple data lines, and multiple pixel units defined by the scanning lines and the data lines crossing and insulating with each other; each pixel unit includes a liquid crystal capacitor, a first switch, a second switch, and a first storage capacitor; wherein, a control terminal of the first switch is connected with a first controller through a first control line; an input terminal of the first switch is connected with the liquid crystal capacitor; an output terminal of the first switch is connected with the first storage capacitor; wherein, a control terminal of the second switch is connected with a signal controller through a signal control line; an input terminal of the second switch is connected with a common electrode; an output terminal of the second switch is respectively connected with the liquid crystal capacitor and the first storage capacitor; and when a picture change rate is lower than a preset rate value, the signal controller control a turn-off time of the second switch to be increased, and the first controller control the first switch to be turned on in order to increase the quantity of electric charge for maintaining a voltage of the liquid crystal capacitor.