EQUALIZING PARASITIC CAPACITANCE EFFECTS IN TOUCH SCREENS
First Claim
1. A touch screen comprising:
- a plurality of display pixels with stackups that each include a first element and a second element, the first element disposed in a first material layer of the stackups and the second element disposed in a second material layer of the stackups, wherein the plurality of display pixels includes;
a first display pixel including a third element connected to the first element, the third element contributing to a first parasitic capacitance of the first display pixel, the third element disposed in a third material layer of the stackups, different from the first material layer and the second material layer; and
a second display pixel lacking the third element and including a fourth element, the fourth element contributing to a second parasitic capacitance of the second display pixel such that the first and second parasitic capacitances are substantially equal.
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Accused Products
Abstract
Reduction of the effects of differences in parasitic capacitances in touch screens is provided. A touch screen can include multiple display pixels with stackups that each include a first element and a second element. For example, the first element can be a common electrode, and the second element can be a data line. The display pixels can include a first display pixel including a third element connected to the first element, and the third element can contribute to a first parasitic capacitance between the first and second elements of the first display pixel, for example, by overlapping with the second element. The touch screen can also include a second display pixel lacking the third element. The second display pixel can include a second parasitic capacitance between the first and second elements of the second display pixel. The first and second parasitic capacitances can be substantially equal, for example.
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Citations
24 Claims
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1. A touch screen comprising:
a plurality of display pixels with stackups that each include a first element and a second element, the first element disposed in a first material layer of the stackups and the second element disposed in a second material layer of the stackups, wherein the plurality of display pixels includes; a first display pixel including a third element connected to the first element, the third element contributing to a first parasitic capacitance of the first display pixel, the third element disposed in a third material layer of the stackups, different from the first material layer and the second material layer; and a second display pixel lacking the third element and including a fourth element, the fourth element contributing to a second parasitic capacitance of the second display pixel such that the first and second parasitic capacitances are substantially equal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for generating an image on a touch screen including a plurality of display pixels, the method comprising:
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operating a first display pixel of the plurality of display pixels to display the image, the plurality of display pixels having stackups that each include a first element and a second element, the first element disposed in a first material layer of the stackups and the second element disposed in a second material layer of the stackups, the first display pixel including; a third element connected to the first element, the third element contributing to a first parasitic capacitance of the first display pixel, the third element disposed in a third material layer of the stackup of the first display pixel, different from the first material layer and the second material layer; and operating a second display pixel of the plurality of display pixels to display the image, the second display pixel lacking the third element and including a fourth element, the fourth element contributing to a second parasitic capacitance of the second display pixel such that the first and second parasitic capacitances are substantially equal. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A touch screen comprising:
a plurality of display pixels with stackups that each include a first element and a second element, wherein the plurality of display pixels includes; a first display pixel including a third element connected to the first element, the third element contributing to a first parasitic capacitance of the first display pixel; a second display pixel lacking the third element and including a fourth element, the fourth element contributing to a second parasitic capacitance of the second display pixel such that the first and second parasitic capacitances are substantially equal; and a third display pixel electrically connected to the first display pixel via the third element of the first display pixel. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A method for generating an image on a touch screen including a plurality of display pixels, the method comprising:
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operating a first display pixel of the plurality of display pixels to display the image, the plurality of display pixels having stackups that each include a first element and a second element, the first display pixel including a third element, the third element connected to the first element, the third element contributing to a first parasitic capacitance of the first display pixel; operating a second display pixel of the plurality of display pixels to display the image, the second display pixel lacking the third element, the second display pixel including a fourth element, the fourth element contributing to a second parasitic capacitance of the second display pixel such that the first and second parasitic capacitances are substantially equal; and operating a third display pixel of the plurality of display pixels to display the image, the third display pixel electrically connected to the first display pixel via the third element of the first display pixel. - View Dependent Claims (21, 22, 23, 24)
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Specification