Touch sensor, display with touch sensor, and method for generating position data
First Claim
1. A display device with a touch sensor, the display device comprising:
- an active-matrix substrate including multiple pixel electrodes that are arranged in matrix on a first surface thereof; and
a transparent counter electrode, which is opposed to the first surface of the active-matrix substrate,wherein the transparent counter electrode is used not only as a common electrode for display purpose but also as a location sensing transparent conductive film, andwherein the display device further includes;
a driving circuit configured to supply a voltage or current to the transparent counter electrode for display purposes;
a location sensing circuit configured to detect currents flowing from multiple points on the transparent counter electrode; and
a switching circuit configured to switch between driving the pixels of the display device for display purposes and location sensing by selectively connecting electrically one of the driving and location sensing circuits to the transparent counter electrode.
2 Assignments
0 Petitions
Accused Products
Abstract
A display device with a touch sensor according to the present invention includes an active matrix substrate 4A and a transparent counter electrode 7. On a first surface of the active matrix substrate, multiple pixel electrodes are arranged in matrix. The transparent counter electrode is opposed to the first surface of the active matrix substrate. The display device further includes a first circuit, a second circuit and a switching circuit. The first circuit supplies a voltage or a current to the transparent counter electrode for display purposes. The second circuit detects currents flowing from a number of points on the transparent counter electrode. And the switching circuit selectively connects electrically one of the first and second circuits to the transparent counter electrode.
148 Citations
19 Claims
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1. A display device with a touch sensor, the display device comprising:
- an active-matrix substrate including multiple pixel electrodes that are arranged in matrix on a first surface thereof; and
a transparent counter electrode, which is opposed to the first surface of the active-matrix substrate,wherein the transparent counter electrode is used not only as a common electrode for display purpose but also as a location sensing transparent conductive film, and wherein the display device further includes; a driving circuit configured to supply a voltage or current to the transparent counter electrode for display purposes; a location sensing circuit configured to detect currents flowing from multiple points on the transparent counter electrode; and a switching circuit configured to switch between driving the pixels of the display device for display purposes and location sensing by selectively connecting electrically one of the driving and location sensing circuits to the transparent counter electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- an active-matrix substrate including multiple pixel electrodes that are arranged in matrix on a first surface thereof; and
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10. A display device with a touch sensor, the display device comprising:
- a first substrate including multiple scanning electrodes that are arranged on a first surface thereof; and
a second substrate including multiple pixel data electrodes that are opposed to the first surface of the first substrate,wherein the pixel data electrodes are used not only as data electrodes for display purpose but also as location sensing transparent conductive films, and wherein the display device further includes; a driving circuit configured to supply a voltage or current to each of said data electrodes for display purposes; a location sensing circuit configured to detect currents flowing from multiple points on each of said data electrodes; and a switching circuit configured to switch between driving the pixels of the display device for display purposes and location sensing by selectively connecting electrically one of the driving and location sensing circuits to the pixel data electrodes. - View Dependent Claims (11, 12, 13, 14)
- a first substrate including multiple scanning electrodes that are arranged on a first surface thereof; and
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15. A display device with a touch sensor, the display device comprising:
- a first substrate including a first group of electrodes that are arranged on a first surface thereof; and
a second substrate including a second group of electrodes that are opposed to the first surface of the first substrate,wherein the electrodes of the first group are used not only as electrodes for display purpose but also as location sensing transparent conductive films, and wherein the display device further includes; a driving circuit configured to supply a voltage or current to each of said electrodes of the first group for display purposes; a location sensing circuit configured to detect currents flowing from multiple points on each of said electrodes of the first group; and a switching circuit configured to switch between driving the pixels of the display device for display purposes and location sensing by selectively connecting electrically one of the driving and location sensing circuits to the electrode of the first group. - View Dependent Claims (16, 17, 18, 19)
- a first substrate including a first group of electrodes that are arranged on a first surface thereof; and
Specification