Touch panels and driving control methods thereof, touch display devices

Abstract

The disclosure is provided with a touch panel and driving control method thereof, and a touch display device. The touch panel includes: a first electrode, a second electrode, and a third electrode. The first electrode, the second electrode, and the third electrode are insulated from each other. The first electrode and the second electrode are crosswise arranged to form a touch film layer, and the second electrode and the third electrode are crosswise arranged to form a fingerprint identification film layer.

What is claimed is: 
     
         1 . A touch panel, comprising:
 a first electrode, a second electrode, and a third electrode;   wherein the first electrode, the second electrode and the third electrode are insulated from each other, the first electrode and the second electrode are crosswise arranged to form a touch film layer, and the second electrode and the third electrode are crosswise arranged to form a fingerprint identification film layer.   
     
     
         2 . The touch panel according to  claim 1 , wherein the first electrode is a touch driving electrode, the third electrode is a fingerprint driving electrode, and the second electrode is a common inductive electrode of the touch film layer and the fingerprint identification film layer, or
 the first electrode is a touch inductive electrode, the third electrode is a fingerprint inductive electrode, and the second electrode is a common driving electrode of the touch film layer and the fingerprint identification film layer.   
     
     
         3 . The touch panel according to  claim 1 , wherein the fingerprint identification film layer is correspondingly arranged in a preset target area of the touch panel, and the preset target area is a partial area or an entire area of the touch panel. 
     
     
         4 . The touch panel according to  claim 3 , wherein a line width of the second electrode corresponding to the preset target area is smaller than a first threshold, and a central spacing of adjacent second electrodes corresponding to the preset target area is less than a second threshold. 
     
     
         5 . The touch panel according to  claim 4 , wherein the line width of the second electrode corresponding to the preset target area ranges from 3 μm to 5 μm, and the central spacing of adjacent second electrodes corresponding to the preset target area ranges from 8 μm to 12 μm. 
     
     
         6 . The touch panel according to  claim 3 , wherein the second electrode corresponding to the preset target area has a hollow pattern. 
     
     
         7 . The touch panel according to  claim 1 , wherein the second electrode is arranged between a film layer in which the first electrode is located and a film layer in which the third electrode is located. 
     
     
         8 . The touch panel according to  claim 1 , further comprising: a display film layer provided with a plurality of illuminating sub-pixels arranged in an array; wherein an orthographic projection of an electrode pattern of the fingerprint identification layer on the touch film layer does not overlap with an orthographic projection of the illuminating sub-pixels of the display film layer on the touch film layer. 
     
     
         9 . A method of driving and controlling a touch panel, the touch panel comprising:
 a first electrode, a second electrode, and a third electrode;   wherein the first electrode, the second electrode, and the third electrode are insulated from each other, and the first electrode and the second electrode are crosswise arranged to form a touch film layer, and the second electrode and the third electrode are crosswise arranged to form a fingerprint identification film layer;   the method comprising:   in a touch mode, a plurality of first electrodes being loaded with first driving signals sequentially, a plurality of second electrodes being loaded with first inductive signals simultaneously;   when switching to a fingerprint identification mode, a plurality of third electrodes being loaded with second driving signals sequentially, and the plurality of second electrodes being loaded with second inductive signals simultaneously;   or,   in a touch mode, a plurality of second electrodes being loaded with first driving signals sequentially, a plurality of first electrodes being loaded with first inductive signals simultaneously;   when switching to a fingerprint identification mode, the plurality of second electrodes being loaded with second driving signals sequentially, a plurality of third electrodes being loaded with second inductive signals simultaneously.   
     
     
         10 . A touch display device, comprising a touch panel, the touch panel including:
 a first electrode, a second electrode, and a third electrode;   wherein the first electrode, the second electrode, and the third electrode are insulated from each other, and the first electrode and the second electrode are crosswise arranged to form a touch film layer, and the second electrode and the third electrode are crosswise arranged to form a fingerprint identification film layer.