Switching circuitry for touch sensitive display
First Claim
1. A circuit for switching an integrated touch screen between different modes, comprising:
- one or more switches configured to switch a data line, a sense line, and a drive line between a first configuration associated with a display mode and a second configuration associated with a touch mode, wherein during the touch mode, the data line is coupled to receive a common voltage and the drive line is configured to stimulate one or more drive regions during the touch mode, the data line, sense line, and drive line being distinct lines.
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Accused Products
Abstract
A circuit for switching an LCD between display and touch modes is disclosed. The circuit can include one or more switches configured to switch one or more drive, sense, and data lines in LCD pixels according to the mode. During touch mode, the circuit switches can be configured to switch one or more drive lines to receive stimulation signals, one or more sense lines to transmit touch signals, and one or more data lines to transmit residual data signals. During display mode, the circuit switches can be configured to switch one or more drive lines and sense lines to receive common voltage signals and one or more data lines to receive data signals. The circuit can be formed around the border of the LCD chip or partially or fully on a separate chip.
67 Citations
26 Claims
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1. A circuit for switching an integrated touch screen between different modes, comprising:
- one or more switches configured to switch a data line, a sense line, and a drive line between a first configuration associated with a display mode and a second configuration associated with a touch mode, wherein during the touch mode, the data line is coupled to receive a common voltage and the drive line is configured to stimulate one or more drive regions during the touch mode, the data line, sense line, and drive line being distinct lines.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A touch sensitive display switchable between different modes, the device comprising:
- a display pixel having a drive line, a sense line, and a data line, the drive line, sense line, and data line being distinct lines; and
a circuit having one or more switches configured to switch the data line and drive line between a display mode and a touch mode, wherein in the touch mode, the data line is coupled to receive a common voltage and the drive line is configured to stimulate one or more drive regions during the touch mode. - View Dependent Claims (11, 12, 13, 14, 15, 16)
- a display pixel having a drive line, a sense line, and a data line, the drive line, sense line, and data line being distinct lines; and
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17. A method for switching between different modes in a touch sensitive display, comprising:
- providing a plurality of pixels in a touch sensitive display having a display mode and a touch mode; and
switching a data line, a sense line, and a drive line between the display mode and the touch mode, wherein in the touch mode, the data line is coupled to receive a common voltage and the drive line is configured to stimulate one or more drive regions during the touch mode, the data line, sense line, and drive line being distinct lines. - View Dependent Claims (18, 19)
- providing a plurality of pixels in a touch sensitive display having a display mode and a touch mode; and
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20. An integrated touch screen switchable between different modes, comprising:
- a plurality of pixels having different modes including a touch mode and a display mode; and
a circuit comprising at least one switch configured to switch at least one of a drive line, a sense line, or a data line between the display mode and the touch mode, wherein the data line, drive line, and sense line are distinct lines and the at least one switch is configured to couple the data line to receive a common voltage in the touch mode and at least one switch configured to couple the drive line to stimulate one or more drive regions during the touch mode.
- a plurality of pixels having different modes including a touch mode and a display mode; and
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21. A touch sensitive display having a display mode and a touch mode comprising:
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at least a first and second drive region;
each drive region having a plurality of pixels having data lines and common electrodes, the plurality of pixels in each of the first and second drive regions having the common electrodes thereof coupled together;at least a first sense region disposed between the first and second drive regions;
the first sense region having a plurality of pixels having data lines and common electrodes and sense lines distinct from the data lines, the plurality of pixels in the first sense region having the common electrodes thereof coupled together;a plurality of drive lines coupling the common electrodes of the first and second drive regions together while bypassing the common electrodes of the first sense region; the data lines of the first and second drive regions coupled to receive a common voltage during the touch mode. - View Dependent Claims (22, 23, 24, 25, 26)
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Specification