Touch panel, display device with the same, and method for manufacturing the display device

Abstract

A display device is provided with a touch panel includes: a base substrate; a first transparent electrode layer located on the base substrate; an ultrasonic wave guiding layer located on the first transparent electrode layer; a second transparent electrode layer located on the ultrasonic wave guiding layer; an ultrasonic wave transmitting unit and an ultrasonic wave receiving unit located on the second transparent electrode layer; and a protecting layer located on the second transparent electrode layer.

1 . A touch panel comprising:
 a base substrate;   a first transparent electrode layer located, on the base substrate;   an ultrasonic wave guiding layer located on the first transparent electrode layer;   a second transparent electrode layer located on the ultrasonic wave guiding layer;   an ultrasonic wave transmitting unit and an ultrasonic wave receiving unit located on the second transparent electrode layer; and   a protecting layer located on the second transparent electrode layer.   
   
   
       2 . The touch panel of  claim 1 ,
 wherein the ultrasonic wave transmitting unit comprises X-axis transmitting units located along an edge of the base substrate, and Y-axis transmitting units located along another edge adjacent to the edge along which the X-axis transmitting units are located, and   the ultrasonic wave receiving unit comprises an X-axis receiving unit formed along another edge opposite to the X-axis transmitting units, and a Y-axis receiving unit formed along another edge opposite to the Y-axis transmitting units.   
   
   
       3 . The touch panel of  claim 1 , wherein the ultrasonic wave guiding layer is made of a material including at least one of ZnO, Al-doped ZnO (AZO), and polyvinylidenefluoride (PVDF). 
   
   
       4 . A display device comprising:
 a display panel that has a plurality of pixels and display an image; and   a touch panel located on a front surface of the display panel,   
     wherein the touch panel comprises:
 a base substrate; 
 a first transparent electrode layer located on the base substrate; 
 
     an ultrasonic wave guiding layer located on the first transparent electrode layer;
 a second transparent electrode layer located on the ultrasonic wave guiding layer; 
 an ultrasonic wave transmitting unit and an ultrasonic wave receiving unit located on the second transparent electrode layer; and 
 a protecting layer located on the second transparent electrode layer. 
 
   
   
       5 . The display device of  claim 4 ,
 wherein the ultrasonic wave transmitting unit comprises X-axis transmitting units located along an edge of the base substrate, and Y-axis transmitting units located along another edge adjacent to the edge along which the X-axis transmitting units are located, and   the ultrasonic wave receiving unit comprises an X-axis receiving unit located along another edge opposite to the X-axis transmitting units, and a Y-axis receiving unit located along another edge opposite to the Y-axis transmitting units.   
   
   
       6 . The display device of  claim 4 , wherein the ultrasonic wave guiding layer is made of a material including at least one of ZnO, Al-doped ZnO (AZO), and polyvinylidenefluoride (PVDF). 
   
   
       7 . The display device of  claim 4 ,
 wherein the display panel comprises a first display panel located on the rear side thereof and a second display panel that is located on the front side thereof and is bonded to the first display panel, and   the touch panel is located on the front surface of the second display panel.   
   
   
       8 . The display device of  claim 7 , further comprising a backlight assembly located on the rear surface of the first display panel. 
   
   
       9 . The display device of  claim 8 , wherein the backlight assembly comprises:
 a light source substrate;   a driving circuit unit located on the light source substrate;   an anode connected to the driving circuit unit;   an organic layer located on the anode; and   a cathode located on the organic layer.   
   
   
       10 . The display device of  claim 9 , wherein the base substrate, the first display panel, the second display panel, and the light source substrate are made of a ceramic material to have rigidity. 
   
   
       11 . The display device of  claim 9 , wherein the base substrate, the first display panel, the second display panel, and the light source substrate are made of a plastic material to have flexibility. 
   
   
       12 . The display device of  claim 9 ,
 wherein the organic layer is divided into a plurality of regions corresponding to the pixels of the display panel, respectively, and   the driving circuit unit drives the plurality of regions of the organic layer to individually emit light.   
   
   
       13 . The display device of  claim 12 , wherein the divided regions of the organic layer emit three primary color light components. 
   
   
       14 . The display device of  claim 8 , further comprising:
 a first polarizer attached between the rear surface of the first display panel and the backlight assembly; and   a second polarizer attached between the front surface of the second display panel and the touch panel.   
   
   
       15 . The display device of  claim 8 , further comprising an additional polarizer attached between the rear surface of the first display panel and the backlight assembly,
 wherein a polarizer is used as the base substrate of the touch panel.   
   
   
       16 . The display device of  claim 8 , wherein the second display panel and the base substrate of the touch panel are integrated into a whole. integrally formed. 
   
   
       17 . A method of manufacturing a display device, comprising:
 providing a mother display panel;   providing a mother touch panel of a front surface of the mother display panel; and   providing a plurality of display panels each having a touch panel attached thereto by cutting the mother touch panel together with the mother display panel.   
   
   
       18 . The method of  claim 17 ,
 wherein the mother display panel comprises a first mother display panel located on the rear side thereof and a second mother display panel that is located on the front side thereof and is bonded to the first mother display panel,   a first polarizer is attached to the rear surface of the first mother display panel and a second polarizer is attached to the front surface of the second mother display panel, and   the mother touch panel is located on the front surface of the second polarizer.   
   
   
       19 . The method of  claim 18 , wherein the touch panel comprises:
 a base substrate attached to the second polarizer;   a first transparent electrode layer located on the base substrate;   an ultrasonic wave guiding layer located on the first transparent electrode layer;   a second transparent electrode layer located on the ultrasonic wave guiding layer;   an ultrasonic wave transmitting unit and an ultrasonic wave receiving unit located on the second transparent electrode layer; and   a protecting layer located on the second transparent electrode layer.   
   
   
       20 . The method of  claim 18 , wherein the touch panel comprises:
 a first transparent electrode layer located on the second polarizer;   an ultrasonic wave guiding layer located on the first transparent electrode layer;   a second transparent electrode layer located on the ultrasonic wave guiding layer;   an ultrasonic wave transmitting unit and an ultrasonic wave receiving unit located on the second transparent electrode layer; and   a protecting layer located on the second transparent electrode layer.   
   
   
       21 . The method of  claim 18 , wherein the second polarizer having the mother touch panel attached thereto is attached to the rear surface of the second mother display panel. 
   
   
       22 . The method of  claim 18 , wherein the mother touch panel is attached to the second polarizer attached to the rear surface of the second mother display panel. 
   
   
       23 . The method of  claim 18 , further comprising:
 providing a mother backlight assembly on the first polarizer; and   providing a plurality of display panels each having a touch panel and a backlight assembly attached thereto by cutting the mother backlight assembly together with the mother display panel and the mother touch panel in a mother display panel cutting process.   
   
   
       24 . The method of  claim 23 , wherein the first polarizer having the mother backlight assembly attached thereto is attached to the rear surface of the first mother display panel. 
   
   
       25 . The method of  claim 23 , wherein the mother backlight assembly is attached to the first polarizer attached to the rear surface of the first mother display panel. 
   
   
       26 . The method of  claim 23 , wherein the backlight assembly comprises:
 a light source substrate;   a driving circuit unit located on the light source substrate;   an anode connected to the driving circuit unit;   an organic layer located on the anode; and   a cathode located on the organic layer.   
   
   
       27 . The method of  claim 17 , further comprising providing a backlight assembly on the rear surface of the display panel. 
   
   
       28 . The method of  claim 17 , wherein the mother display panel is cut by any one of a water jet method, a wheel scriber method, and a laser cutting method. 
   
   
       29 . A method of manufacturing a display device, comprising:
 providing a mother display panel;   providing a mother backlight assembly on a rear surface of the mother display panel;   providing a plurality of display panels each having a backlight assembly attached thereto by cutting the mother backlight assembly together with the mother display panel; and   providing a touch panel on a front surface of the display panel.   
   
   
       30 . The method of  claim 29 , wherein the backlight assembly comprises:
 a light source substrate;   a driving circuit unit located on the light source substrate;   an anode connected to the driving circuit unit;   an organic layer located on the anode; and   a cathode located on the organic layer.   
   
   
       31 . The method of  claim 29 ,
 wherein the mother display panel comprises a first mother display panel located on the rear side thereof and a second mother display panel that is located on the front side thereof and is bonded to the first mother display panel,   a first polarizer is attached to the rear surface of the first mother display panel and a second polarizer is attached to the front surface of the second mother display panel, and   the mother backlight assembly is located on the rear surface of the first polarizer.   
   
   
       32 . The method of  claim 31 , wherein the first polarizer having the mother backlight assembly attached thereto is attached to the rear surface of the first mother display panel. 
   
   
       33 . The method of  claim 31 , wherein the mother backlight assembly is attached to the first polarizer attached to the rear surface of the first mother display panel. 
   
   
       34 . The method of  claim 31 , wherein the touch panel comprises:
 a base substrate attached to the second polarizer;   a first transparent electrode layer located on the base substrate;   an ultrasonic wave guiding layer located on the first transparent electrode layer;   a second transparent electrode layer located on the ultrasonic wave guiding layer;   an ultrasonic wave transmitting unit and an ultrasonic wave receiving unit located on the second transparent electrode layer; and   a protecting layer located on the second transparent electrode layer.   
   
   
       35 . The method of  claim 31 , wherein the touch panel comprises:
 a first transparent electrode layer located on the second polarizer;   an ultrasonic wave guiding layer located on the first transparent electrode layer;   a second transparent electrode layer located on the ultrasonic wave guiding layer;   an ultrasonic wave transmitting unit and an ultrasonic wave receiving unit located on the second transparent electrode layer; and   a protecting layer located on the second transparent electrode layer.   
   
   
       36 . The method of  claim 29 , wherein the mother display panel is cut by any one of a water jet method, a wheel scriber method, and a laser cutting method.