Touch sensor arrangements for organic light-emitting diode displays
First Claim
1. A display, comprising:
- an array of organic light-emitting diodes;
a thin-film encapsulation layer that encapsulates the organic light-emitting diodes;
capacitive touch sensor electrodes on the thin-film encapsulation layer;
control lines that convey touch sensor signals, wherein the thin-film encapsulation layer is interposed between the capacitive touch sensor electrodes and the control lines; and
a patterned black masking layer having clear openings that are aligned with the array of organic light-emitting diodes, wherein the capacitive touch sensor electrodes comprise a grid of conductive lines and wherein the conductive lines are covered by the patterned black masking layer.
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Accused Products
Abstract
Displays such as organic light-emitting diode displays may be provided with touch sensing capabilities. A touch sensor may be formed from electrodes located on a thin-film encapsulation layer or one or more sides of a polarizer. A single-sided or double-sided touch sensor panel may be attached to the upper or lower surface of a polarizer. Control circuitry may be used to provide control signals to light-emitting diodes in the display using a grid of control lines. The control lines and transparent electrode structures such as indium tin oxide structures formed on a thin-film encapsulation layer or polarizer may be used as electrodes for a touch sensor. Displays may have active regions and inactive peripheral portions. The displays may have edge portions that are bent along a bend axis that is within the active region to form a borderless display. Virtual buttons may be formed on the bent edge portions.
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Citations
14 Claims
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1. A display, comprising:
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an array of organic light-emitting diodes; a thin-film encapsulation layer that encapsulates the organic light-emitting diodes; capacitive touch sensor electrodes on the thin-film encapsulation layer; control lines that convey touch sensor signals, wherein the thin-film encapsulation layer is interposed between the capacitive touch sensor electrodes and the control lines; and a patterned black masking layer having clear openings that are aligned with the array of organic light-emitting diodes, wherein the capacitive touch sensor electrodes comprise a grid of conductive lines and wherein the conductive lines are covered by the patterned black masking layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14)
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8. A display, comprising:
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an array of organic light-emitting diodes; a thin-film encapsulation layer that encapsulates the organic light-emitting diodes; capacitive touch sensor electrodes on the thin-film encapsulation layer; a polarizer; a layer of adhesive between the polarizer and the capacitive touch sensor electrodes, wherein the capacitive touch sensor electrodes comprise patterned transparent conductive structures on the thin-film encapsulation layer that are covered by the layer of adhesive; control lines that are coupled to the organic light-emitting diodes; and display and touch sensor control circuitry that is configured to generate control signals that are conveyed over the control lines to the light-emitting diodes and that is configured to gather touch sensor capacitance signals from the patterned transparent conductive structures on the thin-film encapsulation layer and from at least some of the control lines, wherein at least some of the thin-film encapsulation layer is interposed between the control lines and the patterned transparent conductive structures.
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Specification