DUAL CONFIGURATION FOR DISPLAY DATA LINES
First Claim
1. A display device switchable between a display mode and a touch mode, the device comprising:
- at least a first and second drive region, each having a plurality of display pixels having storage capacitors connected together along first and second, different directions by first and second common voltage lines;
a sense region positioned between the first and second drive regions, the sense region having a plurality of display pixels having storage capacitors connected together along the first and second directions by third and fourth common voltage lines,the first common voltage lines of the first drive region electrically bypassing the sense region to couple to the first common voltage lines of the second drive region;
each display pixel of the sense region having a data line configured to transmit a display data signal and a sense line configured to transmit a touch signal, the sense line coupled to a touch circuit, and the sense line being distinct from the data line;
a switch configured to switch the data line between a first configuration associated with a display mode and a second configuration associated with a touch mode; and
wherein in the second configuration, the data lines of at least some of the display pixels of the sense region are coupled to the sense line, the sense line being coupled to a touch circuit in order to sense a touch or near touch on the device.
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Abstract
A display having data lines that can be configured between a display mode and a touch mode is disclosed. The display can have sense regions for sensing a touch or near touch on the display during the touch mode. These same regions can display graphics or data on the display during the display mode. During display mode, the data lines in the sense regions can be configured to couple to display circuitry in order to receive data signals from the circuitry for displaying. During touch mode, the data lines in the sense regions can be configured to couple to corresponding sense lines in the regions, which in turn can couple to touch circuitry, in order to transmit touch signals to the circuitry for sensing a touch or near touch. Alternatively, during touch mode, the data lines in the sense regions can be configured to couple to ground in order to transmit residual data signals to ground for discarding.
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Citations
21 Claims
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1. A display device switchable between a display mode and a touch mode, the device comprising:
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at least a first and second drive region, each having a plurality of display pixels having storage capacitors connected together along first and second, different directions by first and second common voltage lines; a sense region positioned between the first and second drive regions, the sense region having a plurality of display pixels having storage capacitors connected together along the first and second directions by third and fourth common voltage lines, the first common voltage lines of the first drive region electrically bypassing the sense region to couple to the first common voltage lines of the second drive region; each display pixel of the sense region having a data line configured to transmit a display data signal and a sense line configured to transmit a touch signal, the sense line coupled to a touch circuit, and the sense line being distinct from the data line; a switch configured to switch the data line between a first configuration associated with a display mode and a second configuration associated with a touch mode; and wherein in the second configuration, the data lines of at least some of the display pixels of the sense region are coupled to the sense line, the sense line being coupled to a touch circuit in order to sense a touch or near touch on the device. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A display device having a display mode and a touch mode, comprising:
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at least a first and second drive region, each having a plurality of display pixels having storage capacitors connected together along first and second, different directions by first and second common voltage lines; a sense region positioned between the first and second drive regions, the sense region having a plurality of display pixels having storage capacitors connected together along the first and second directions by third and fourth common voltage lines; each of the plurality of display pixels of the sense region having a data line and a distinct sense line; the first common voltage lines of the first drive region electrically bypassing the sense region to couple to the first common voltage lines of the second drive region; and wherein at least some of the data lines of the plurality of display pixels of the sense region are configured to couple to ground during a touch mode for reducing parasitic capacitance created by the data line. - View Dependent Claims (8, 9, 10, 11)
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12. A display device having a display mode and a touch mode, comprising:
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a plurality of pixels, each of the plurality of pixels having a data line and a sense line, the sense line being distinct from the data line, wherein some of the data lines are configured to couple to a touch circuit to sense touch or near touch on the device during the touch mode and others of the data lines are configured to couple to ground during the touch mode for reducing parasitic capacitance created by the data line; and the display device further comprising at least one switch configured to couple the sense lines of at least some of the pixels to receive a common voltage during the display mode. - View Dependent Claims (13, 14, 15)
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16. A method for configuring a display device having a display mode and a touch mode, the method comprising:
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for a touch mode, switching some of a plurality of data lines corresponding to a plurality of pixels of the device to couple to a plurality of sense lines of the device and others of the plurality of data lines of the device to couple to ground, the plurality of sense lines being distinct from the some and the others of the plurality of data lines; and for the display mode, coupling the sense lines of at least some of the pixels to receive a common voltage during the display mode. - View Dependent Claims (17, 18, 19)
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20. A method for switching a display device between a display mode and a touch mode, the display device having a plurality of pixels with sense lines and data lines, the data lines being distinct from the sense lines, the method comprising:
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determining whether a mode signal is associated with a display mode or a touch mode for a display device; for the determined mode signal associated with the display mode, coupling the data lines of the plurality of pixels of the display device to a display circuit of the display device; and for the determined mode signal associated with the touch mode; and coupling at least some of the data lines to ground and decoupling the some of the data lines from the display circuitry. - View Dependent Claims (21)
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Specification