Touch screen liquid crystal display
First Claim
1. A touch screen comprising a display with integral touch sensing, the touch screen comprising:
- a first plurality of pixels, each having first and second electrodes and a common terminal, the common terminal of the first plurality of pixels electrically connected together along a first direction and configurable for providing a common voltage in a display mode of operation and for providing a stimulation signal in a touch sensing mode of operation;
a second plurality of pixels each having first and second electrodes and a common terminal, the common terminal of the second plurality of pixels electrically connected together along a second direction and configurable for providing a common voltage in the display mode of operation and for providing a touch sensing signal in the touch sensing mode of operation;
a plurality of data lines for transmitting display data; and
a plurality of switches, operative in the display mode of operation, for connecting the plurality of data lines to the first electrodes of the first plurality of pixels and the first electrodes of the second plurality of pixels;
a first group of the first plurality of pixels;
a first group of the second plurality of pixels disposed adjacent the first group of the first plurality of pixels;
a second group of first plurality of pixels adjacent the first group of the second plurality of pixels; and
a second group of the second plurality of pixels adjacent the second group of the first plurality of pixels.
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Accused Products
Abstract
Disclosed herein are liquid-crystal display (LCD) touch screens that integrate the touch sensing elements with the display circuitry. The integration may take a variety of forms. Touch sensing elements can be completely implemented within the LCD stackup but outside the not between the color filter plate and the array plate. Alternatively, some touch sensing elements can be between the color filter and array plates with other touch sensing elements not between the plates. In another alternative, all touch sensing elements can be between the color filter and array plates. The latter alternative can include both conventional and in-plane-switching (IPS) LCDs. In some forms, one or more display structures can also have a touch sensing function. Techniques for manufacturing and operating such displays, as well as various devices embodying such displays are also disclosed.
720 Citations
20 Claims
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1. A touch screen comprising a display with integral touch sensing, the touch screen comprising:
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a first plurality of pixels, each having first and second electrodes and a common terminal, the common terminal of the first plurality of pixels electrically connected together along a first direction and configurable for providing a common voltage in a display mode of operation and for providing a stimulation signal in a touch sensing mode of operation; a second plurality of pixels each having first and second electrodes and a common terminal, the common terminal of the second plurality of pixels electrically connected together along a second direction and configurable for providing a common voltage in the display mode of operation and for providing a touch sensing signal in the touch sensing mode of operation; a plurality of data lines for transmitting display data; and a plurality of switches, operative in the display mode of operation, for connecting the plurality of data lines to the first electrodes of the first plurality of pixels and the first electrodes of the second plurality of pixels; a first group of the first plurality of pixels; a first group of the second plurality of pixels disposed adjacent the first group of the first plurality of pixels; a second group of first plurality of pixels adjacent the first group of the second plurality of pixels; and a second group of the second plurality of pixels adjacent the second group of the first plurality of pixels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification