Touch screen and manufacturing method thereof, display device

1. A touch screen comprising:

a plurality of first transparent electrodes and a plurality of second transparent electrodes disposed on a substrate;

first conductive layers disposed on two sides of the first transparent electrodes and connected in parallel with the first transparent electrodes, and/or second conductive layers disposed on two sides of the second transparent electrodes and connected in parallel with the second transparent electrodes;

wherein one set of the first transparent electrodes and the second transparent electrodes are touch driving electrodes, the other set are touch sensing electrodes, and the first conductive layers and the second conductive layers are metal layers or alloy layers; and

wherein the first conductive layers comprise a plurality of first electrodes, the first transparent electrodes are slit-like, and projections of slits of the first transparent electrodes overlap with projections of slits between the first electrodes of the first conductive layers on the substrate.

2. The touch screen of claim 1 , wherein the first transparent electrodes extend in a first direction and the second transparent electrodes extend in a second direction intersecting the first direction.

3. The touch screen of claim 2 , wherein the first transparent electrodes are broken into a plurality of first transparent sub-electrodes at intersection areas with the second transparent electrodes; and adjacent first transparent sub-electrodes are connected through conductive sheets.

4. The touch screen of claim 2 , wherein the first transparent electrodes and the second transparent electrodes are formed by connecting in series a plurality of diamond shaped sub-electrodes respectively; or

the first transparent electrodes and the second transparent electrodes are formed by connecting in series a plurality of rectangular sub-electrodes respectively; or

the second transparent electrodes are strip-like electrodes.

5. The touch screen of claim 1 , wherein the first transparent electrodes and the second transparent electrodes extend in a first direction and are arranged by coupling without any intersection, crossover and joint therebetween.

6. The touch screen of claim 5 , wherein the first transparent electrodes are provided with a plurality of hollowed-out areas of regular pattern, which are non-closed hollowed-out areas with openings at edges of the first transparent electrodes;

the second transparent electrodes comprise a plurality of sub-electrodes disposed at hollowed-out areas of the first transparent electrodes, each of the sub-electrodes is connected by a wire adjacent to the first transparent electrodes, and the wire is connected with corresponding sub-electrodes through an opening at an edge of the first transparent electrodes and is insulated from the first transparent electrodes.

7. The touch screen of claim 1 , wherein the plurality of first electrodes from the first conductive layers in a first direction; and

the second conductive layers comprise a plurality of second electrodes extending in a second direction intersecting the first direction.

8. The touch screen of claim 7 ,

wherein the second transparent electrodes are slit-like, and projections of slits of the second transparent electrodes overlap with projections of slits between the second electrodes on the substrate.

9. The touch screen of claim 8 , wherein the first conductive layers further comprise a plurality of third electrodes extending in the second direction to make the first conductive layers to be grid-like first conductive layers; and

the second conductive layers further comprise a plurality of fourth electrodes extending in the first direction to make the second conduct layers to be grid-like second conductive layers.

10. The touch screen of claim 9 , wherein the first transparent electrodes are grid-like, and hollowed-out areas in the grid-like first transparent electrodes overlap with projections, on the substrate, of hollowed-out areas in the grid-like first conductive layers; and

the second transparent electrodes are grid-like, and hollowed-out areas in the grid-like second transparent electrodes overlap with projections, on the substrate, of hollowed-out areas in the grid-like second conductive layers.

11. The touch screen of claim 1 , wherein the first conductive layers are formed of metallic copper, metallic aluminum, metallic molybdenum or metallic neodymium or an alloy containing at least two metals of metallic copper, metallic aluminum, metallic molybdenum or metallic neodymium;

the second conductive layers are formed of metallic copper, metallic aluminum, metallic molybdenum or metallic neodymium or an alloy containing at least two metals of metallic copper, metallic aluminum, metallic molybdenum or metallic neodymium.

12. The touch screen of claim 1 , further comprising:

first leads for connecting the first transparent electrodes with a signal source for providing signals to the first transparent electrodes; and

second leads for connecting the second transparent electrodes with another signal source for providing signals to the second transparent electrodes;

wherein the first conductive layers further comprise parts on two sides of the first lead and connected in parallel with the first lead; and

the second conductive layers further comprise parts on two sides of the second lead and connected in parallel with the second lead.

13. A display device comprising the touch screen of claim 1 , wherein the first conductive layers and the second conductive layers in the touch screen are located in areas corresponding to black matrix in the touch screen.

14. The display device of claim 13 , wherein the first transparent electrodes are slit-like, and slits of the first transparent electrodes overlap with projections of slits between the first electrodes in the vertical direction; the second transparent electrodes are slit-like, and slits of the second transparent electrodes overlap with projections of slits between the second electrodes in the vertical direction; the slits in the first transparent electrodes and the slits in the second transparent electrodes correspond to transmitting areas of pixels in the display device;

or,

the first transparent electrodes are grid-like, and slits of the first transparent electrodes overlap with projections of slits between the first electrodes and the third electrodes in the vertical direction; the second transparent electrodes are grid-like, and slits of the second transparent electrodes overlap with projections of slits between the second electrodes and the fourth electrodes in the vertical direction; the slits in the first transparent electrodes and the slits in the second transparent electrodes correspond to transmitting areas of pixels in the display device.

15. A manufacturing method of a touch screen comprising:

forming a plurality of first transparent electrodes and a plurality of second transparent electrodes on a substrate; and

forming first conductive layers connected in parallel with the first transparent electrodes on two sides of the first transparent electrodes, and/or forming second conductive layers connected in parallel with the second transparent electrodes on two sides of the second transparent electrodes;

wherein the first conductive layers and the second conductive layers are metal layers or alloy layers; and

wherein the first conductive layers comprise a plurality of first electrodes, the first transparent electrodes are slit-like, and projections of slits of the first transparent electrodes overlap with projections of slits between the first electrodes of the first conductive layers on the substrate.

16. The method of claim 15 , wherein

forming the first transparent electrodes extending in a first direction and the second transparent electrodes extending in a second direction intersecting the first direction on the substrate at the same time, the first transparent electrodes being broken into a plurality of first transparent sub-electrodes at intersection areas with the second transparent electrodes;

forming the first conductive layers and the second conductive layers, on the substrate formed with the first transparent electrodes and the second transparent electrodes, in areas where the first transparent sub-electrodes and the second transparent electrodes are located respectively;

forming an insulation layer on the substrate formed with the first conductive layers and the second conductive layers at intersection areas of the second conductive layers and the first conductive layer; and

forming a conductive sheet connected with two adjacent first transparent sub-electrodes on the substrate formed with the insulation layer and on the insulation layer at the intersection areas;

or,

forming the first conductive layers arranged in a first direction and the second conductive layers arranged in a second direction intersecting the first direction on the substrate at the same time, the first conductive layers being broken at intersection areas with the second conductive layers;

forming the first transparent electrodes and the second transparent electrodes, on the substrate formed with the first conductive layers and the second conductive layers, in areas where the first conductive layers and the second conductive layers are located respectively, the first transparent electrodes being broken into a plurality of first transparent sub-electrodes at intersection areas with the second transparent electrodes;

forming an insulation layer on the substrate formed with the first transparent electrodes and the second transparent electrodes and on the second transparent electrodes at intersection areas with the first transparent electrodes; and

forming a conductive sheet connected with two adjacent first transparent sub-electrodes on the substrate formed with the insulation layer and on the insulation layer at the intersection areas.

17. The method of claim 16 , further comprising, before forming of the first conductive layers and the second conductive layers on the first transparent electrodes and the second transparent electrodes respectively and before forming of the first transparent electrodes and the second transparent electrodes: forming the first conductive layers and the second conductive layers at areas to be formed with the first transparent electrodes and the second transparent electrodes respectively; or

after forming of the first conductive layers and the second conductive layers and after forming of the first transparent electrodes and the second transparent electrodes on the first conductive layers and the second conductive layers respectively: forming the first conductive layers and the second conductive layers again on the first transparent electrodes and the second transparent electrodes respectively.

18. The method of claim 15 , wherein:

forming the first transparent electrodes arranged in a first direction on the substrate;

forming the first conductive layers on the substrate formed with the first transparent electrodes and in areas where the first transparent electrodes are located;

forming an insulation layer on the substrate formed with the first transparent electrodes and the first conductive layers at intersection areas of the first transparent electrodes and second transparent electrodes to be formed;

forming the second transparent electrodes arranged in a second direction intersecting the first direction on the substrate formed with the insulation layer; and

forming the second conductive layers on the substrate formed with the second transparent electrodes and in areas where the second transparent electrodes are located;

or,

forming the first conductive layers on the substrate;

forming the first transparent electrodes on the substrate formed with the first conductive layers and in areas where the first conductive layers are located;

forming an insulation layer on the substrate formed with the first transparent electrodes and the first conductive layers at intersection areas of the first transparent electrodes and second transparent electrodes to be formed;

forming the second conductive layers intersecting the first conductive layers on the substrate formed with the insulation layer and on the insulation layer; and

forming the second transparent electrodes on the substrate formed with the second conductive layers and in areas where the second conductive layers are located.

19. The method of claim 15 , wherein:

forming the first transparent electrodes and the second transparent electrodes arranged in a same direction on the substrate, the first transparent electrodes and the second transparent electrodes being arranged by coupling without any intersection, crossover and joint therebetween;

forming the first conductive layers and the second conductive layers on the substrate formed with the first transparent electrodes and the second transparent electrodes and in areas where the first transparent electrodes and the second transparent electrodes are located;

or,

forming the first conductive layers and the second conductive layers arranged in a first direction on the substrate at the same time, the first conductive layers and the second conductive layers being arranged by coupling without any intersection, crossover and joint therebetween;

forming the first transparent electrodes and the second transparent electrodes on the substrate formed with the first conductive layers and the second conductive layers in areas where the first conductive layers and the second conductive layers are located respectively.

20. The method of claim 15 , wherein, while forming the first transparent electrodes and/or second transparent electrodes, first leads for connecting the first transparent electrodes to a signal source and second leads for connecting the second transparent electrodes to another signal source are formed, the first conductive layers are formed on two sides of the first leads, and the second conductive layers are formed on two sides of the second leads.