US 9,436,314 B2 · Display device

Abstract

A display device is configured in a display state to allow the common electrode to function as an electrode for display and a scanning electrode for a touch panel, to which a common voltage and a first scanning pulse voltage are supplied, and to allow a detection circuit to detect a touched position based on the voltage detected by the first and the second detection electrodes. In a display stop state, the first detection electrode is configured to function as a temporary scanning electrode, and the detection circuit is configured to supply a second scanning pulse voltage to the first detection electrode so as to detect existence of a swipe based on the voltage detected by the second detection electrode.

Claims11

Dependent claims

A display device comprising:

a display panel including an array substrate and a counter substrate;
a pixel electrode between the array substrate and the counter substrate;
a common electrode between the array substrate and the counter substrate;
and
a detection circuit;
wherein
the display panel has a detection electrode,
the detection circuit includes a first switch element, a second switch element, an integration circuit, and a pulse voltage circuit outputting the pulse voltage,
in the first mode, the common electrode is supplied a common voltage for display,
in the second mode, the first switch connects between the detection electrode and the pulse voltage circuit for supplying a pulse voltage to the detection electrode, and the second switch connects between the detection electrode and the integration circuit for detecting a voltage of the detection electrode.

7 more elements

Dependencies are inferred from the claim text.

Display device

Life of this patent

Display device

Life of this patent

Abstract

Claims11