Projecting capacitive touch sensing device, display panel, and image display system
View Patent ↗The present invention relates to a projecting capacitive touch sensing device, display panel, and image display system. The projecting capacitive touch sensing comprises an array of a plurality of sensing units, each sensing unit including: a first electrode made of a sensing material, at least one second electrode made of a sensing material and being disposed around the peripheral of the first electrode, at least one first sensing axis electrically connected to the first electrode, and at least one second sensing axis electrically connected to the second electrodes. The first electrode is quadrangle, while the second electrodes are triangular-shaped. The first electrode and the plurality of second electrodes are arranged to form a rectangular, and a non-sensing area is defined between the first electrode and the second electrodes.
1. A projecting capacitive touch sensing device which comprises a plurality arrangements of sensing units, wherein each sensing unit comprises:
a first electrode made of a sensing material, wherein the first electrode is square-shaped;
a set of second electrodes having a plurality of second electrodes made of the sensing material and being disposed around the peripheral of the first electrode, wherein the second electrodes are triangular-shaped;
a third electrode made of the sensing material, wherein the third electrode is square-shaped;
a set of fourth electrodes having a plurality of fourth electrodes made of sensing material and being disposed around the peripheral of the third electrode, wherein the fourth electrodes are triangular-shaped;
a first sensing axis electrically connected to the first electrode and the third electrode; and
a second sensing axis electrically connected to the second electrodes and the fourth electrodes,
wherein the first electrode and the second electrodes are arranged to form a quadrangle, and the third electrode and the fourth electrodes are arranged to form a quadrangle directly next to the quadrangle formed by the first and the second electrodes;
a non-sensing area is defined between the first electrode and the second electrode.
2. The touch sensing device of claim 1 , wherein the first electrode is rhombic-shaped and the second electrodes are right triangular-shaped, wherein each hypotenuse of the second electrodes are arranged opposite to one side of the first electrode such that the second electrodes are disposed along with the first electrode to form a rectangular-pattern.
3. The touch sensing device of claim 1 , wherein the set of second electrodes includes a first triangular-shaped second electrode, a second triangular-shaped second electrode, a third triangular-shaped second electrode, and a fourth triangular-shaped second electrode, wherein the first triangular-shaped second electrode is disposed on the upper left side of the first electrode, the second triangular-shaped second electrode is disposed on the lower left side of the first electrode, the third triangular-shaped second electrode is disposed on the upper right side of the first electrode, and the fourth triangular-shaped second electrode is disposed on the lower right side of the first electrode.
4. The touch sensing device of claim 3 , wherein the shape of the first triangular-shaped second electrode and the shape of the second triangular-shaped second electrode become narrower from left to right.
5. The touch sensing device of claim 3 , wherein the shape of the third triangular-shaped second electrode and the shape of the fourth triangular-shaped second electrode become narrower from right to left.
6. The touch sensing device of claim 1 , wherein the plurality of sensing units are arranged vertically.
7. The touch sensing device of claim 1 , wherein the plurality of sensing units are arranged horizontally.
8. The touch sensing device of claim 1 , wherein the first electrode and the second electrode are made of transparent and conductive ITO or IZO.
9. A display panel having a projecting capacitive touch sensing device which comprises a plurality of arrangements sensing units, wherein each sensing unit comprises:
a first electrode made of a sensing material, wherein the first electrode is square-shaped;
a set of second electrodes having a plurality of second electrodes made of the sensing material and being disposed around the peripheral of the first electrode, wherein the second electrodes are triangular-shaped;
a third electrode made of the sensing material, wherein the third electrode is square-shaped;
a set of fourth electrodes having a plurality of fourth electrodes made of sensing material and being disposed around the peripheral of the third electrode, wherein the fourth electrodes are triangular-shaped;
a first sensing axis electrically connected to the first electrode and the third electrode; and
a second sensing axis electrically connected to the second electrode and the fourth electrodes,
wherein the first electrode and the second electrodes are arranged to form a rectangular-pattern, and the third electrode and the fourth electrodes are arranged to form a quadrangle directly next to the quadrangle formed by the first and the second electrodes; a non-sensing area is defined between the first electrode and the second electrode.
10. The display panel of claim 9 , wherein the first electrode is rhombic-shaped and the second electrodes are right triangular-shaped, wherein each hypotenuse of the second electrodes are arranged opposite to one side of the first electrode such that the four second electrodes are disposed along with the first electrode to form a rectangular-pattern.
11. The display panel of claim 9 , wherein the set of second electrodes includes a first triangular-shaped second electrode, a second triangular-shaped second electrode, a third triangular-shaped second electrode, and a fourth triangular-shaped second electrode, wherein the first triangular-shaped second electrode is disposed on the upper left side of the first electrode, the second triangular-shaped second electrode is disposed on the lower left side of the first electrode, the third triangular-shaped second electrode is disposed on the upper right side of the first electrode, and the fourth triangular-shaped second electrode is disposed on the lower right side of the first electrode.
12. The display panel of claim 11 , wherein the shape of the first triangular-shaped second electrode and the shape of the second triangular-shaped second electrode become narrower from left to right.
13. The display panel of claim 11 , wherein the shape of the third triangular-shaped second electrode and the shape of the fourth triangular-shaped second electrode become narrower from right to left.
14. The display panel of claim 9 , wherein the plurality of sensing units are arranged vertically.
15. The display panel of claim 9 , wherein the plurality of sensing units are arranged horizontally.
16. An image display system, comprising the display panel of claim 9 and a power supply coupled to the display panel to provide it with electricity.
17. The image display system of claim 16 , wherein the image display system is a mobile phone, digital camera, PDA, electronic dictionary, notebook computer, desktop computer, television, GPS receiver, automotive display, aircraft display, digital photo frame, or portable DVD player.