Drive scheme for a display
First Claim
Patent Images
1. A method for addressing a plurality of display elements comprising:
- applying a first potential to a segment electrode of a first display element;
applying a second potential different from the first potential to a segment electrode of a second display element;
applying a third potential to a common electrode of both display elements for a selected duration;
wherein a potential difference produced across the first and second display elements during the selected duration has an amplitude and duration greater than a response threshold of the first display element and less than a response threshold of the second display element, wherein the response threshold of the first display element is based at least in part on the first potential applied to the segment electrode of the first display element, and wherein the response threshold of the second display element is based at least in part on the second potential applied to the segment electrode of the second display element; and
wherein the potential difference across the first display element during the selected duration has an amplitude outside of a first hysteresis window of the first display element and wherein the potential difference across the second display element during the selected duration has an amplitude outside a second hysteresis window of the second display element.
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Abstract
This disclosure provides systems, methods and apparatus for writing a display image to a display having an array of pixels according to a selected driving sequence. In one aspect, display elements in a row are driven using a tall and narrow voltage pulse. This allows display elements of a row to be driven in a shorter line time.
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Citations
22 Claims
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1. A method for addressing a plurality of display elements comprising:
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applying a first potential to a segment electrode of a first display element; applying a second potential different from the first potential to a segment electrode of a second display element; applying a third potential to a common electrode of both display elements for a selected duration; wherein a potential difference produced across the first and second display elements during the selected duration has an amplitude and duration greater than a response threshold of the first display element and less than a response threshold of the second display element, wherein the response threshold of the first display element is based at least in part on the first potential applied to the segment electrode of the first display element, and wherein the response threshold of the second display element is based at least in part on the second potential applied to the segment electrode of the second display element; and wherein the potential difference across the first display element during the selected duration has an amplitude outside of a first hysteresis window of the first display element and wherein the potential difference across the second display element during the selected duration has an amplitude outside a second hysteresis window of the second display element. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A display apparatus comprising:
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a plurality of display elements including at least a first and second display element; and a driver circuit configured to; generate a first pulse characterized by a parameter having a value greater than a response threshold of the first display element and less than a response threshold of the second display element, wherein the response threshold of the first display element is based at least in part on a first hold voltage applied to the first display element, and wherein the response threshold of the second display element is based at least in part on a second hold voltage applied to the second display element; and apply the first pulse to the plurality of display elements, wherein the pulse has an amplitude outside of a first hysteresis window of the first display element and outside a second hysteresis window of the second display element. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A display apparatus comprising:
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means for generating a first pulse characterized by a parameter having a value greater than a response threshold of a first display element and less than a response threshold of a second display element, wherein the response threshold of the first display element is based at least in part on a first hold voltage applied to the first display element, and wherein the response threshold of the second display element is based at least in part on a second hold voltage applied to the second display element; and means for applying the first pulse to the first display element and the second display element, wherein the pulse has an amplitude outside of a first hysteresis window of the first display element and outside a second hysteresis window of the second display element. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A method for addressing a plurality of display elements, the method comprising:
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setting each segment electrode voltage in a line of display elements to one of first and second different voltage levels; strobing a common electrode of the line of display elements with a voltage pulse; wherein the common electrode voltage pulse has an amplitude and duration such that when applied to a display element with a segment voltage at the first level the display element does not actuate, and when applied to a display element with a segment voltage at the second level the display element does actuate, and further wherein the common electrode voltage pulse has an amplitude that would actuate both elements if applied for a sufficiently long duration. - View Dependent Claims (22)
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Specification