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US 2014/0210776 A1Published application
Touch panel display device and touch panel controller
AssigneeRenesas SP Drivers Inc.
InventorsTsuyoshi Kuroiwa, Tatsuya Ishii
Life of this patent
Estimating the term…
Abstract
A common touch panel controller is used for performing touch detection by driving both a touch panel superimposed on a display panel of a touch panel display portion for display, and a touch sensor superimposed on a touch key pattern of a touch key input portion for buttons. A control circuit capable of switching detection characteristics of a detection circuit common to the both in accordance with detection from the touch panel display portion and detection from the touch key input portion is adopted in the touch panel controller.
Claims20
A touch panel display device comprising:
- a touch panel display portion;
- a touch key input portion;
- and
- a touch panel controller that performs touch detection by driving the touch panel display portion and the touch key input portion,
- wherein the touch panel display portion includes a dot matrix-type display panel and a touch panel which are disposed so as to overlap each other, the touch panel having intersection capacitances formed in a matrix at intersecting portions of a plurality of first driving electrodes and a plurality of first detection electrodes,
- the touch key input portion includes a touch key pattern and a touch sensor which are disposed so as to overlap each other, the touch sensor having intersection capacitances at intersecting portions of a second driving electrode and second detection electrodes,
- the touch panel controller includes
- driving terminals which are individually connected to the first driving electrodes and the second driving electrode,
- detection terminals which are individually connected to the first detection electrodes and a portion of which is connected in common to the second detection electrodes,
- driving circuits that provide driving voltages to the driving terminals in a predetermined order,
- detection circuits that form detection signals by potential changes appearing in the plurality of detection terminals in synchronization with driving of the driving terminals, and
- a control circuit capable of switching detection characteristics of the detection circuits in accordance with detection from the touch panel display portion and detection from the touch key input portion.
9 more elements
A touch panel controller that performs touch detection by driving a touch panel display portion and a touch key input portion,
- wherein the touch panel display portion includes a dot matrix-type display panel and a touch panel which are disposed so as to overlap each other, the touch panel having intersection capacitances formed in a matrix at intersecting portions of a plurality of first driving electrodes and a plurality of first detection electrodes,
- the touch key input portion includes a touch key pattern and a touch sensor which are disposed so as to overlap each other, the touch sensor having intersection capacitances at intersecting portions of a second driving electrode and second detection electrodes,
- the touch panel controller includes
- driving terminals which are individually connected to the first driving electrodes and the second driving electrode,
- detection terminals which are individually connected to the first detection electrodes and a portion of which is connected in common to the second detection electrodes,
- driving circuits that provide driving voltages to the driving terminals in a predetermined order,
- detection circuits that form detection signals by potential changes appearing in the plurality of detection terminals in synchronization with driving of the driving terminals, and
- a control circuit capable of switching detection characteristics of the detection circuits in accordance with detection from the touch panel display portion and detection from the touch key input portion.
5 more elements
A touch panel display device comprising:
- a touch panel display portion;
- a touch key input portion;
- and
- a touch panel controller that performs touch detection by driving the touch panel display portion and the touch key input portion,
- wherein the touch panel display portion includes a dot matrix-type display panel and a touch panel which are disposed so as to overlap each other, the touch panel having intersection capacitances formed in a matrix at intersecting portions of a plurality of first driving electrodes and a plurality of first detection electrodes,
- the touch key input portion includes a touch key pattern and a touch sensor which are disposed so as to overlap each other, the touch sensor having intersection capacitances at intersecting portions of a second driving electrode and second detection electrodes,
- the touch panel controller includes
- driving terminals which are individually connected to the first driving electrodes and the second driving electrode,
- detection terminals which are individually connected to the first detection electrodes and the second detection electrodes,
- driving circuits that provide driving voltages to the driving terminals in a predetermined order,
- detection circuits that form detection signals by potential changes appearing in the plurality of detection terminals in synchronization with driving of the driving terminals, and
- a control circuit that controls operations of the driving circuit and the detection circuit.
9 more elements
A touch panel controller that performs touch detection by driving a touch panel display portion and a touch key input portion,
- wherein the touch panel display portion includes a dot matrix-type display panel and a touch panel which are disposed so as to overlap each other, the touch panel having intersection capacitances formed in a matrix at intersecting portions of a plurality of first driving electrodes and a plurality of first detection electrodes,
- the touch key input portion includes a touch key pattern and a touch sensor which are disposed so as to overlap each other, the touch sensor having intersection capacitances at intersecting portions of a second driving electrode and second detection electrodes,
- the touch panel controller includes
- driving terminals which are individually connected to the first driving electrodes and the second driving electrode,
- detection terminals which are individually connected to the first detection electrodes and the second detection electrodes,
- driving circuits that provide driving voltages to the driving terminals in a predetermined order, and
- detection circuits that form detection signals by potential changes appearing in the plurality of detection terminals in synchronization with driving of the driving terminals.
4 more elements
A touch panel display device comprising:
- a touch panel display portion;
- a touch key input portion;
- and
- a touch panel controller that performs touch detection by driving the touch panel display portion and the touch key input portion,
- wherein the touch panel display portion includes a dot matrix-type display panel and a touch panel which are disposed so as to overlap each other, the touch panel having intersection capacitances formed in a matrix at intersecting portions of a plurality of first driving electrodes and a plurality of first detection electrodes,
- the touch key input portion includes a touch key pattern and a touch sensor which are disposed so as to overlap each other, the touch sensor having intersection capacitances at intersecting portions of a second driving electrode and second detection electrodes,
- the touch panel controller includes
- detection terminals which are individually connected to the first detection electrodes and the second detection electrodes,
- driving terminals which are individually connected to the first driving electrodes and a portion of which is connected in common to the second driving electrode,
- driving circuits that provide driving voltages to the driving terminals in a predetermined order,
- detection circuits that form detection signals by potential changes appearing in the plurality of detection terminals in synchronization with driving of the driving terminals, and
- a control circuit that controls operations of the driving circuit and the detection circuit.
9 more elements
A touch panel controller that performs touch detection by driving a touch panel display portion and a touch key input portion,
- wherein the touch panel display portion includes a dot matrix-type display panel and a touch panel which are disposed so as to overlap each other, the touch panel having intersection capacitances formed in a matrix at intersecting portions of a plurality of first driving electrodes and a plurality of first detection electrodes,
- the touch key input portion includes a touch key pattern and a touch sensor which are disposed so as to overlap each other, the touch sensor having intersection capacitances at intersecting portions of a second driving electrode and second detection electrodes,
- the touch panel controller includes
- detection terminals which are individually connected to the first detection electrodes and the second detection electrodes,
- driving terminals which are individually connected to the first driving electrodes and a portion of which is connected in common to the second driving electrode,
- driving circuits that provide driving voltages to the driving terminals in a predetermined order, and
- detection circuits that form detection signals by potential changes appearing in the plurality of detection terminals in synchronization with driving of the driving terminals.
4 more elements
Dependencies are inferred from the claim text.