Display device with touch panel
View Patent ↗The display device with a touch panel includes: a display panel; and a touch panel formed to be overlaid on the display panel, in which: the touch panel includes X electrodes and Y electrodes which intersect the X electrodes; the X electrodes and the Y electrodes include intersection portions at which the X electrodes and the Y electrodes intersect each other, and electrode portions each formed between the intersection portions; and either the electrode portions of the X electrode or the electrode portion of the Y electrodes are smaller in area than another thereof so that a capacitance of one line of the X electrodes and a capacitance of one line of the Y electrodes are equal to each other. The display device with a touch panel has a large S/N ratio and a high detection sensitivity.
1. A display device with a touch panel, comprising:
a display panel; and
a touch panel formed to be overlaid on the display panel,
wherein the touch panel includes:
X electrodes which extend in the same direction; and
Y electrodes which extend in a direction different from the direction of the X electrodes,
wherein the X electrodes and the Y electrodes respectively include:
intersection portions each formed where the X electrodes and the Y electrodes overlap each other; and
electrode portions each formed between the intersection portions, and
wherein the electrode portions of one of the X electrodes and the Y electrodes are smaller in area than the other thereof so that a capacitance of one line of the X electrodes and a capacitance of one line of the Y electrodes are equal to each other.
2. A display device with a touch panel according to claim 1 , further comprising a dummy electrode placed close to one of the electrode portions that is smaller in area.
3. A display device with a touch panel according to claim 1 , wherein either the X electrodes or the Y electrodes are made of a transparent conductive film.
4. A display device with a touch panel according to claim 1 , wherein both of the X electrodes and the Y electrodes are made of transparent conductive films that sandwich an insulating film.
5. A display device with a touch panel according to claim 2 ,
wherein both the X electrodes and the Y electrodes are made of transparent conductive films that sandwich an insulating film, and
wherein the dummy electrode is made of a transparent conductive film that is formed in a same layer as the electrode portions which is smaller in area.
6. A display device with a touch panel, comprising:
a display panel; and
a touch panel bonded onto the display panel,
wherein the display panel has longer sides and shorter sides,
wherein the touch panel includes:
X electrodes; and
Y electrodes which intersect the X electrodes,
wherein the X electrodes are formed along the longer sides whereas the Y electrodes are formed along the shorter sides,
wherein the X electrodes and the Y electrodes respectively include:
intersection portions each formed where the X electrodes and the Y electrodes overlap each other; and
individual electrodes each formed between the intersection portions and being wider than the intersection portions, and
wherein each of the individual electrodes of the X electrodes is smaller in area than each of the individual electrodes of the Y electrodes.
7. A display device with a touch panel according to claim 6 , further comprising dummy electrodes which are formed close to the individual electrodes of the X electrodes.
8. A display device with a touch panel according to claim 6 , wherein either the X electrodes or the Y electrodes are made of a transparent conductive film.
9. A display device with a touch panel according to claim 6 , wherein both of the X electrodes and the Y electrodes are made of transparent conductive films that sandwich an insulating film.
10. A display device with a touch panel according to claim 7 ,
wherein both the X electrodes and the Y electrodes are made of transparent conductive films that sandwich an insulating film, and
wherein the dummy electrodes is made of a transparent conductive film that is formed in a same layer as the X electrodes.
11. A display device with a touch panel, comprising:
a display panel; and
a touch panel placed on the display panel,
wherein the touch panel includes:
X electrodes; and
Y electrodes which intersect the X electrodes,
wherein the X electrodes and the Y electrodes respectively include:
intersection portions each formed where the X electrodes and the Y electrodes overlap each other; and
individual electrodes each formed between the intersection portions and being wider than the intersection portions,
wherein a number of the individual electrodes of the X electrodes is n and a number of the individual electrodes of the Y electrodes is m, and
wherein a ratio between an area of the individual electrodes of the X electrodes and an area of the individual electrodes of the Y electrodes is m:n.
12. A display device with a touch panel according to claim 11 , further comprising dummy electrodes which are formed close to the individual electrodes of the X electrodes and are supplied a floating potential.
13. A display device with a touch panel according to claim 11 , wherein either the X electrodes or the Y electrodes are made of a transparent conductive film.
14. A display device with a touch panel according to claim 11 , wherein both of the X electrodes and the Y electrodes are made of transparent conductive films that sandwich an insulating film.
15. A display device with a touch panel according to claim 12 ,
wherein both the X electrodes and the Y electrodes are made of transparent conductive films that sandwich an insulating film, and
wherein the dummy electrodes each are made of a transparent conductive film that is formed in a same layer as the X electrodes.