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US 9,436,324 B2Granted
Electronic device including touch-sensitive display and method of detecting touches
AssigneeBlackBerry Limited
InventorsAmit Pal Singh, Christopher Ying Wai Ho
Life of this patent
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Abstract
A touch-sensitive display includes first electrodes and second electrodes coupled to a first controller to detect touches by self-capacitance touch sensing. The touch-sensitive display also includes third electrodes coupled to a second controller to detect touches by mutual-capacitance touch sensing utilizing the third electrodes and the second electrodes. The first electrodes are different from the third electrodes.
Claims11
A touch-sensitive display comprising:
- common electrodes of a display and second electrodes coupled to a first controller to detect touches by mutual-capacitance touch sensing, wherein the second electrodes include fingers joined at ends thereof to provide a generally U-shaped electrode on the touch-sensitive display;
- third electrodes disposed between the fingers of the second electrodes such that one of the third electrodes disposed between the fingers of two different, consecutive second electrodes that each comprises at least two fingers joined together, the third electrodes and the second electrodes coupled to a second controller to detect touches by self-capacitance touch sensing utilizing the third electrodes and the second electrodes when the touch-sensitive display is operating in a low power condition;
- wherein the third electrodes are wider at a first end than a second end such that the third electrodes are shaped to, by the at least one controller, identify a location of a touch along a length of at least one of the third electrodes when the touch-sensitive display is operating in the low power condition, and to detect a gesture to identify a direction of the gesture along a length of at least one of the fingers of the second electrodes during detection of touches by self-capacitance touch sensing when the touch-sensitive display is operating in the low power condition;
- wherein the common electrodes are not utilized during self-capacitance touch sensing when the touch-sensitive display is operating in the low power condition;
- and
- wherein the at least one controller comprises a touch controller coupled to the second electrodes to detect touches when the second electrodes are utilized to detect touches by mutual-capacitance touch sensing, and a display controller is coupled to the common electrodes to drive the common electrodes when the common electrodes are utilized to detect touches, and wherein the touch controller is coupled to the third electrodes to detect touches when the third electrodes are utilized to detect touches by self-capacitance touch sensing.
3 more elements
A method comprising:
- detecting touches by mutual-capacitance touch sensing utilizing common electrodes coupled to a display controller and utilized to display information and second electrodes coupled to a touch controller of a touch-sensitive display, which second electrodes each include at least two fingers joined at ends thereof to provide a generally U-shaped electrode on the touch-sensitive display;
- detecting touches by self-capacitance touch sensing utilizing the second electrodes and utilizing third electrodes of the touch-sensitive display when the touch-sensitive display is operating in a low power condition, which third electrodes are disposed between the fingers of the second electrodes that each comprises at least two fingers joined together such that one of the third electrodes disposed between the fingers of two different, consecutive second electrodes, the third electrodes and the second electrodes;
- wherein the third electrodes are wider at a first end than a second end such that the third electrodes are shaped to, by the at least one controller, identify a location of a touch along a length of at least one of the third electrodes when the touch-sensitive display is operating in the low power condition, and to detect a gesture to identify a direction of the gesture along a length of at least one of the fingers of the second electrodes during detection of touches by self-capacitance touch sensing when the touch-sensitive display is operating in the low power condition;
- wherein the common electrodes are not utilized during self-capacitance touch sensing when the touch-sensitive display is operating in the low power condition;
- and
- wherein the at least one controller comprises a touch controller coupled to the second electrodes to detect touches when the second electrodes are utilized to detect touches by mutual-capacitance touch sensing, and a display controller is coupled to the common electrodes to drive the common electrodes when the common electrodes are utilized to detect touches, and wherein the touch controller is coupled to the third electrodes to detect touches when the third electrodes are utilized to detect touches by self-capacitance touch sensing.
3 more elements
Dependencies are inferred from the claim text.