Integrated touch panel for a TFT display
First Claim
1. A touch screen configured to perform both a display and a touch sensing functionality comprising:
- a plurality of pixels, each pixel including a storage capacitor comprising a first electrode and a second electrode;
one or more opaque display elements used to perform the display functionality of the touch screen; and
a plurality of common lines made from a non-transparent conductor, connected to the first electrode of one or more of the plurality of pixels and positioned at a different layer in the touch screen than the opaque display elements such that the opaque display elements substantially overlap the common lines,wherein the first electrodes connected to the common lines are used for both the display and touch sensing functionalities of the touch screen.
1 Assignment
0 Petitions
Accused Products
Abstract
This relates to displays for which the use of dual function capacitive elements does not result in any decreases of the aperture of the display. Thus, touch sensitive displays that have aperture ratios that are no worse than similar non-touch sensing displays can be manufactured. More specifically, this relates to placing touch sensing opaque elements so as to ensure that they are substantially overlapped by display related opaque elements, thus ensuring that the addition of the touch sensing elements does not substantially reduce the aperture ratio. The touch sensing display elements can be, for example, common lines that connect various capacitive elements that are configured to operate collectively as an element of the touch sensing system.
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Citations
36 Claims
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1. A touch screen configured to perform both a display and a touch sensing functionality comprising:
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a plurality of pixels, each pixel including a storage capacitor comprising a first electrode and a second electrode; one or more opaque display elements used to perform the display functionality of the touch screen; and a plurality of common lines made from a non-transparent conductor, connected to the first electrode of one or more of the plurality of pixels and positioned at a different layer in the touch screen than the opaque display elements such that the opaque display elements substantially overlap the common lines, wherein the first electrodes connected to the common lines are used for both the display and touch sensing functionalities of the touch screen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A digital media player including a touch screen configured to perform both a display and a touch sensing functionality, comprising:
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a plurality of pixels, each pixel including a storage capacitor comprising a first electrode and a second electrode; one or more opaque display elements used to perform the display functionality of the touch screen; and a plurality of common lines made from a non-transparent conductor, connected to the first electrode of one or more of the plurality of pixels and positioned at a different layer in the touch screen than the opaque display elements such that the opaque display elements substantially overlap the common lines, wherein the first electrodes connected to the common lines are used for both the display and touch sensing functionalities of the touch screen.
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14. A mobile telephone including a touch screen configured to perform both a display and a touch sensing functionality, comprising:
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a plurality of pixels, each pixel including a storage capacitor comprising a first electrode and a second electrode; one or more opaque display elements used to perform the display functionality of the touch screen; and a plurality of common lines made from a non-transparent conductor, connected to the first electrode of one or more of the plurality of pixels and positioned at a different layer in the touch screen than the opaque display elements such that the opaque display elements substantially overlap the common lines, wherein the first electrodes connected to the common lines are used for both the display and touch sensing functionalities of the touch screen.
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15. A touch screen configured to perform both a display and a touch sensing functionality, comprising:
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a plurality of pixels including a plurality of sets of pixels, each set of pixels comprising two or more pixels; a plurality of common electrodes, each common electrode serving as a storage capacitor electrode for a respective set of pixels; one or more opaque display elements used to perform the display functionality of the touch screen; and a plurality of common lines made from a non-transparent conductor, connected to the plurality of common electrodes and positioned at a different layer in the touch screen than the opaque display elements such that the opaque display elements substantially overlap the common lines, wherein the common electrodes are used for both the display and touch sensing functionalities of the touch screen. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A method for manufacturing a touch screen configured to perform both a display and a touch sensing functionality comprising:
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forming a plurality of pixels, each pixel including a storage capacitor comprising a first electrode and a second electrode; forming one or more opaque display elements used to perform the display functionality of the touch screen; forming a plurality of common lines from a non-transparent conductor, the common lines being positioned at a different layer in the touch screen than the opaque display elements such that the opaque display elements substantially overlap the common lines; and connecting respective ones of the plurality of common lines to one or more of the first electrodes of the plurality of pixels, wherein the first electrodes connected to the common lines are used for both the display and touch sensing functionalities of the touch screen. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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30. A method for manufacturing a touch screen configured to perform both a display and a touch sensing functionality including:
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forming a plurality of pixels including a plurality of sets of pixels, each set of pixels comprising two or more pixels; forming a plurality of common electrodes, each common electrode serving as a storage capacitor electrode for a respective set of pixels; forming one or more opaque display elements used to perform the display functionality of the touch screen; forming a plurality of common lines from a non-transparent conductor and positioned at a different layer in the touch screen than the opaque display elements such that the opaque display elements substantially overlap the common lines; and connecting the plurality of common lines to the plurality of common electrodes, wherein the common electrodes are used for both the display and touch sensing functionalities of the touch screen. - View Dependent Claims (31, 32, 33, 34, 35)
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36. A personal computer including a touch screen configured to perform both a display and a touch sensing functionality, comprising:
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a plurality of pixels, each pixel including a storage capacitor comprising a first electrode and a second electrode; one or more opaque display elements used to perform the display functionality of the touch screen; and a plurality of common lines made from a non-transparent conductor, connected to the first electrode of one or more of the plurality of pixels and positioned at a different layer in the touch screen than the opaque display elements such that the opaque display elements substantially overlap the common lines, wherein the first electrodes connected to the common lines are used for both the display and touch sensing functionalities of the touch screen.
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Specification