This application claims all benefits accruing under 35 U.S.C. §119 from China Patent Application No. 201210304610.1, filed on Aug. 24, 2012 in the China Intellectual Property Office, the content of which is hereby incorporated by reference in its entirety. This application is related to commonly-assigned applications entitled, “CARBON NANOTUBE TOUCH PANEL AND TOUCH DISPLAY APPARATUS USING SAME” filed ______ (Atty. Docket No. US46684), “CARBON NANOTUBE TOUCH PANEL HAVING TWO CARBON NANOTUBE FILMS” filed ______ (Atty. Docket No. US46691), “CARBON NANOTUBE TOUCH PANEL HAVING AT LEAST TWO CARBON NANOTUBE FILMS” filed ______ (Atty. Docket No. US46692), “CARBON NANOTUBE TOUCH PANEL AND METHOD FOR MAKING SAME” filed ______ (Atty. Docket No. US46693), “TOUCH PANEL AND TOUCH DISPLAY APPARATUS USING SAME” filed ______ (Atty. Docket No. US46695), and “TOUCH PANEL AND TOUCH DISPLAY APPARATUS USING SAME” filed ______ (Atty. Docket No. US46960).
1. Technical Field
The present disclosure relates to touch sensing technologies, and more particularly, to a touch panel with at least one carbon nanotube (CNT) film and a touch display apparatus using the touch panel.
2. Description of Related Art
Touch display apparatuses normally include a display assembly and a touch panel attached to the display assembly. Carbon nanotube (CNT) touch panels are widely used because of the durability of CNT touch panels. A CNT touch panel includes a plurality of carbon nanotubes arranged in parallel on a substrate. However, conductivity of the carbon nanotubes decrease as a length of the CNT unit increases. This characteristic is a limit in design, and making a CNT touch panel with a large size is problematic.
What is needed is to provide a means that can overcome the above-described limitations.
The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of at least one embodiment. In the drawings, like reference numerals designate corresponding parts throughout the various views.
Reference will be made to the drawings to describe various embodiments.
Referring to
Each of the first sub-panel 11a and the second sub-panel 11b includes a touch sensing region 110, a first side region 111, a second side region 112, a third side region 113, a fourth side region 114 and a flexible printed circuit (FPC) 115. The touch sensing region 110 is located in a main central region of the CNT sub-panel 11a or 11b. The first side region 111, the second side region 112, a third side region 113, and the fourth side region 114 are connected four sides of the touch sensing region 110 respectively. The first side region 111, the second side region 112, a third side region 113, and the fourth side region 114 are arranged end to end to form a periphery region surrounding the touch sensing region 110. The FPC 115 is mounted on and electrically connected to an edge of the second side region 112. The first side region 111 and the third side region 113 are located adjacent to two opposite ends of the touch sensing region 110. The second side region 112 and the fourth side region 114 are located adjacent to the other two opposite ends of the touch sensing region 110.
The first side region 111 of the first sub-panel 11a covers the first side region 111 of the second sub-panel 11b, such that the touch sensing region 110 of the first sub-panel 11a and the touch sensing region 110 of the second sub-panel 11b are joined via the first side region 111 of the first sub-panel 11a. In detail, the first side region 111 of the second sub-panel 11b includes a supporting portion 1110 and a connection portion 1112 connected between the supporting portion 1110 and the touch sensing region 110 of the second sub-panel 11b. The first side region 111 of the first sub-panel 11a is positioned on the supporting portion 1110 and adhered to the supporting portion 1110 by an adhesive layer 116. The touch sensing region 110 of the first sub-panel 11a, the first side region 111 of the first sub-panel 11a and the touch sensing region 110 of the second sub-panel 11b are positioned on a same plane. Moreover, the second side region 112 of the first sub-panel 11a and the second side region 112 of the second sub-panel 11b are positioned on the same plane and joined, and the fourth side region 114 of the first sub-panel 11a and the fourth side region 114 of the second sub-panel 11b are positioned on the same plane and joined.
Each of the first sub-panel 11a and the second sub-panel 11b further includes a base 12 and a plurality of connection wires 14. The CNT film 13 is positioned on the base 12 and covers the touch sensing region 110. Referring to
The plurality of connection wires 14 are positioned on the periphery region surrounding the touch sensing region 110 and are electrically coupled between the CNT film 13 and the FPC 115. Each connection wire 14 includes a first electrode 141 electrically connected to the CNT film 13, a second electrode 143 electrically connected to the FPC 115, and a first connection portion 142 connected between the first electrode 141 and the second electrode 143. In the embodiment, the first electrodes 141 are positioned on the first side region 111 and the third side region 113, and the second electrodes 142 are positioned on the second side region 112. Moreover, the first electrodes 141 positioned on the first side region 111 are arranged along the second direction Y one by one, the first electrodes 141 positioned on the third side region 113 are arranged along the second direction Y one by one, and the second electrodes 142 positioned on the second side region 112 are arranged along the first direction X one by one.
Referring also to
Each of the first sub-panel 21a and the second sub-panel 21b includes a touch sensing region 110, a first side region 211, a second side region 212, a third side region 213, a fourth side region 214 and a flexible printed circuit (FPC) 215. The touch sensing region 210 is located in a main central region of the CNT sub-panel 21a or 21b. The first side region 211, the second side region 212, a third side region 213, and the fourth side region 214 are connected four sides of the touch sensing region 210 respectively, and The first side region 211, the second side region 212, a third side region 113, and the fourth side region 214 are arranged end to end to form a periphery region surrounding the touch sensing region 210. The FPC 215 is mounted on and electrically connected to an edge of the second side region 212. The first side region 211 and the second side region 212 are located adjacent to two opposite ends of the touch sensing region 210. The third side region 213 and the fourth side region 214 are located adjacent to the other two opposite ends of the touch sensing region 210.
The first side region 211 of the first sub-panel 21a covers the first side region 211 of the second sub-panel 21b, such that the touch sensing region 210 of the first sub-panel 21a and the touch sensing region 210 of the second sub-panel 21b are joined via the first side region 211 of the first sub-panel 21a.
Each of the first sub-panel 21a and the second sub-panel 21b further includes a base 22 and a plurality of connection wires 24. The CNT film 23 is positioned on the base 22 and covers the touch sensing region 210. Referring also to
The plurality of connection wires 24 are positioned on the periphery region surrounding the touch sensing region 210 and are electrically coupled between the CNT film 23 and the FPC 215. Each connection wire 24 includes a first electrode 241 electrically connected to the CNT film 23, a second electrode 243 electrically connected to the FPC 215, and a first connection portion 242 connected between the first electrode 241 and the second electrode 243. In the second embodiment, the first electrodes 241 are positioned on the third side region 213 and the fourth side region 214, and the second electrodes 242 are positioned on the second side region 212. Moreover, the first electrodes 241 positioned on the third side region 213 are arranged along the second direction Y, the first electrodes 141 positioned on the fourth side region 214 are arranged along the second direction Y, and the second electrodes 242 positioned on the second side region 212 are arranged along the first direction X.
Referring to
Referring to
In the embodiment, the transparent conductive layer 37 is a second CNT film. Referring to
Referring to
Both of the first CNT film 33 and the transparent conductive layer 37 cover the touch sensing region 310. The plurality of first connection wires 34 are positioned on the periphery region surrounding the touch sensing region 310 and are electrically coupled between the first CNT film 33 and the FPC 315. The plurality of second connection wires 36 are positioned on the periphery region surrounding the touch sensing region 310 and are electrically coupled between the transparent conductive layer 37 and the FPC 315.
Each first connection wire 34 includes a first electrode 341 electrically connected to the first CNT film 33, a second electrode 343 electrically connected to the FPC 315, and a first connection portion 342 connected between the first electrode 341 and the second electrode 343. In the embodiment, the first electrodes 341 are positioned on the first side region 311 and the third side region 313, and the second electrodes 342 are positioned on the second side region 312. In the embodiment, the first side region 311 has a first electrode 341 arranged along the second direction Y, and the first electrode 311 of the first side region 311 extends from an end of the first side region 311 to the opposite end of the first side region 311. The third side region 313 has a plurality of first electrodes 341 arranged along the second direction Y. The second side region 312
Each second connection wire 36 includes a third electrode 361 electrically connected to the transparent conductive layer 37, a fourth electrode 363 electrically connected to the FPC 315, and a second connection portion 362 connected between the third electrode 361 and the fourth electrode 363. In the embodiment, the third electrodes 361 are positioned on the second side region 312 and the fourth side region 314, and the fourth electrodes 363 are positioned on the second side region 312. In the embodiment, the second side region 312 includes a plurality of third electrodes 361 arranged along the first direction X. The fourth side region 314 has a third electrode 361 extending along the first direction X, and the third electrode 361 of the fourth side region 314 extends from an end of the fourth side region 314 to the opposite end of the fourth side region 314.
It is to be understood that even though numerous characteristics and advantages of the present embodiments have been set forth in the foregoing description, together with details of the structures and functions of the embodiments, the disclosure is illustrative only; and that changes may be made in detail, especially in the matters of shape, size, and arrangement of parts, within the principles of the embodiments, to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Number | Date | Country | Kind |
---|---|---|---|
2012103046101 | Aug 2012 | CN | national |