TOUCH INPUT DEVICE
First Claim
1. A display device with touch sensor input, the display device comprising an array display pixels or an array of display sub-pixels with groups of sub-pixels together defining respective display pixels, the device comprising:
- a display layer; and
a touch sensor input device over the display layer for enabling a touch input to the device, wherein the touch sensor input device comprises;
a first and second array of electrodes, the electrodes in the first array being orthogonal to the electrodes in the second array; and
a capacitor sensing arrangement for sensing an electrode capacitance signal which varies in the presence of the touch input,wherein the electrode capacitance signals for groups of the electrodes in each array are combined in order to derive respective individual sense signals,wherein the pitch of the electrodes of the first and second array is the same as a pixel or sub-pixel pitch of the display device.
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Accused Products
Abstract
A touch sensor input device includes a first and second array of electrodes, the electrodes in the first array being orthogonal to the electrodes in the second array. A capacitor sensing arrangement senses an electrode capacitance signal which varies in the presence of a touch input. The capacitance signals for groups of electrodes in each array are combined in order to derive respective individual sense signals. This arrangement has electrodes with a finer resolution than the sensing resolution, and this gives improved ability to sense accurately the position of the touch input.
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Citations
13 Claims
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1. A display device with touch sensor input, the display device comprising an array display pixels or an array of display sub-pixels with groups of sub-pixels together defining respective display pixels, the device comprising:
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a display layer; and a touch sensor input device over the display layer for enabling a touch input to the device, wherein the touch sensor input device comprises; a first and second array of electrodes, the electrodes in the first array being orthogonal to the electrodes in the second array; and a capacitor sensing arrangement for sensing an electrode capacitance signal which varies in the presence of the touch input, wherein the electrode capacitance signals for groups of the electrodes in each array are combined in order to derive respective individual sense signals, wherein the pitch of the electrodes of the first and second array is the same as a pixel or sub-pixel pitch of the display device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification