MULTI-MODE VOLTAGES FOR TOUCHSCREENS
First Claim
1. An integrated touch screen device comprising:
- a touch screen including a plurality of display pixels;
a multi-mode power system that selects a first voltage mode corresponding a display phase, the first voltage mode including a first voltage level for each of one or more voltages of the touch screen, and selects a second voltage mode corresponding to a touch sensing phase, the second voltage mode including a second voltage level for each of the one or more voltages, each second voltage level being different than the corresponding first voltage level;
a display system that updates an image displayed by the display pixels during the display phase, wherein each of the one or more voltages are applied to the touch screen at the corresponding first voltage level during the updating of the image; and
a touch sensing system that senses touch during a touch sensing phase, wherein each of the one or more voltages are applied to the touch screen at the corresponding second voltage level during the sensing of touch.
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Accused Products
Abstract
Operating touch screens by applying more than one voltage modes, including a first voltage mode corresponding to a display phase and a second voltage mode corresponding to a touch sensing phase, is provided. An integrated touch screen device can include a multi-mode power system that can select a first voltage mode corresponding a display phase and a second voltage mode corresponding to a touch sensing phase. Each of one or more voltages can be applied to the touch screen at the corresponding first voltage level during the updating of the image. A touch sensing system can sense touch during a touch sensing phase. Each of one or more voltages can be applied to the touch screen at the corresponding second voltage level during the sensing of touch.
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Citations
20 Claims
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1. An integrated touch screen device comprising:
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a touch screen including a plurality of display pixels; a multi-mode power system that selects a first voltage mode corresponding a display phase, the first voltage mode including a first voltage level for each of one or more voltages of the touch screen, and selects a second voltage mode corresponding to a touch sensing phase, the second voltage mode including a second voltage level for each of the one or more voltages, each second voltage level being different than the corresponding first voltage level; a display system that updates an image displayed by the display pixels during the display phase, wherein each of the one or more voltages are applied to the touch screen at the corresponding first voltage level during the updating of the image; and a touch sensing system that senses touch during a touch sensing phase, wherein each of the one or more voltages are applied to the touch screen at the corresponding second voltage level during the sensing of touch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of operating an integrated touch screen device including a touch screen with a plurality of display pixels, the method comprising:
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selecting a first voltage mode corresponding a display phase, the first voltage mode including a first voltage level for each of one or more voltages of the touch screen; updating an image displayed by the display pixels during the display phase, wherein each of the one or more voltages are applied to the touch screen at the corresponding first voltage level during the updating of the image; selecting a second voltage mode corresponding to a touch sensing phase, the second voltage mode including a second voltage level for each of the one or more voltages, each second voltage level being different than the corresponding first voltage level; and sensing touch during a touch sensing phase, wherein each of the one or more voltages are applied to the touch screen at the corresponding second voltage level during the sensing of touch. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification