Integrated touch screen
First Claim
1. A touch screen having an integrated display, the touch screen comprising:
- a plurality of display pixels, each having a corresponding circuit element;
a plurality of drive lines, each including at least a first conductive layer connected to at least a first plurality of circuit elements of the display pixels, the first conductive layer connecting the first plurality of circuit elements to one another along both a positive and a negative first direction and a positive and a negative second direction;
a plurality of sense lines including at least a second plurality of circuit elements of the display pixels; and
a plurality of touch pixels, each touch pixel is formed by ones of the first plurality of circuit elements and ones of the second plurality of circuit elements that are adjacent the ones of the first plurality of circuit elements.
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Accused Products
Abstract
Displays with touch sensing circuitry integrated into the display pixel stackup are provided. Circuit elements, such as touch signal lines, such as drive lines and sense lines, grounding regions, in the display pixel stackups can be grouped together to form touch sensing circuitry that senses a touch on or near the display. An integrated touch screen can include multi-function circuit elements that can operate as circuitry of the display system to generate an image on the display, and can also form part of a touch sensing system that senses one or more touches on or near the display. The multi-function circuit elements can be, for example, capacitors in display pixels that can be configured to operate as storage capacitors/electrodes, common electrodes, conductive wires/pathways, etc., of the display circuitry in the display system, and that may also be configured to operate as circuit elements of the touch sensing circuitry.
174 Citations
23 Claims
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1. A touch screen having an integrated display, the touch screen comprising:
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a plurality of display pixels, each having a corresponding circuit element; a plurality of drive lines, each including at least a first conductive layer connected to at least a first plurality of circuit elements of the display pixels, the first conductive layer connecting the first plurality of circuit elements to one another along both a positive and a negative first direction and a positive and a negative second direction; a plurality of sense lines including at least a second plurality of circuit elements of the display pixels; and a plurality of touch pixels, each touch pixel is formed by ones of the first plurality of circuit elements and ones of the second plurality of circuit elements that are adjacent the ones of the first plurality of circuit elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A touch screen having an integrated display, the touch screen comprising:
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a plurality of display pixels, each having a corresponding circuit element; a plurality of drive lines, each including a first conductive layer connected to at least a first plurality of circuit elements of the display pixels, the first conductive layer connecting the first plurality of circuit elements to one another along both a positive and a negative first direction and a positive and a negative second direction; a plurality of sense lines disposed transverse to the drive lines and including at least a second plurality of circuit elements of the display pixels; a plurality of touch pixels formed by adjacent ones of the plurality of drive lines and the plurality of sense lines; the plurality of display pixels including; a first pixel type which includes the first conductive layer connected to the corresponding circuit element of the first pixel type and electrically connected to at least to an adjacent first pixel type along (1) a positive first direction, (2) a negative first direction, (3) a positive second direction and (4) a negative second direction, the plurality of drive lines including at least pixels of the first pixel type and the plurality of sense lines including at least pixels of the first pixel type; and a second pixel type which includes the first conductive layer connected to the corresponding circuit element of the second pixel type and electrically connected at least to an adjacent second pixel type along all but one or all but two of;
(1) the positive first direction, (2) the negative first direction, (3) the positive second direction and (4) the negative second direction; andwherein each of the plurality of drive lines includes circuit elements of the display pixels arranged along the positive and negative first direction and the positive and negative second direction. - View Dependent Claims (12, 13)
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14. A touch screen integrated with a display, the touch screen comprising:
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a plurality of display pixels arranged along first and second directions; a plurality of drive lines including some of the plurality of display pixels disposed along the first direction; a plurality of sense lines including others of the plurality of display pixels disposed along the second direction, crossing the first direction; a plurality of touch or near-touch responsive pixels formed by the plurality of drive lines and the plurality of sense lines; each of the plurality of drive lines including first groups of circuit elements of the plurality of display pixels; each of the plurality of sense lines including a second group of circuit elements of the plurality of display pixels; a conductive layer interconnecting at least some of the circuit elements of one of the first groups along, or substantially parallel to, at least the first and the second directions within a first region defined by a portion of at least one of the plurality of drive lines; the conductive layer further interconnecting at least some of the circuit elements of the second group along, or substantially parallel to, at least the second direction within a second region defined by at least a portion of at least one of the plurality of sense lines; the first region and the second region electrically disconnected in the conductive layer; and a drive tunnel conducting layer electrically connecting at least some circuit elements of a first of the first groups with circuit elements of a second of the first groups, the drive tunnel conducting layer electrically bypassing circuit elements of the second group of circuit elements. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification