LIQUID CRYSTAL DISPLAY REORDERED INVERSION
First Claim
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1. A method of updating rows of pixels in a display panel, the method comprising:
- assigning each row of pixels in the display panel to one of a plurality of update sets each update set including a sequence of rows such that each row in the sequence is separated from a next row in the sequence by at least one row;
applying a common voltage to a set of electrodes in the display panel, the applied voltage adapted to switch between two voltage levels at a constant frequency; and
updating the pixels in the rows of an update set each time the voltage applied to the electrodes switches voltage levels.
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Abstract
Methods and apparatus for switching the voltages supplied to the electrodes of pixels disposed within a liquid crystal display device. By reducing the frequency associated with an alternating voltage supplied to a first set of liquid crystal electrodes, the power required to drive the liquid crystal display device can be reduced. At the same time, a reordered schedule for updating rows of pixels in the liquid crystal display device can provide improved image quality.
59 Citations
30 Claims
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1. A method of updating rows of pixels in a display panel, the method comprising:
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assigning each row of pixels in the display panel to one of a plurality of update sets each update set including a sequence of rows such that each row in the sequence is separated from a next row in the sequence by at least one row; applying a common voltage to a set of electrodes in the display panel, the applied voltage adapted to switch between two voltage levels at a constant frequency; and updating the pixels in the rows of an update set each time the voltage applied to the electrodes switches voltage levels. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of updating rows of pixels in a display panel, the method comprising:
alternating between updating the pixels in a plurality of even rows and updating the pixels in a plurality of odd rows until the pixels in all rows in the display panel have been updated. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A display apparatus comprising:
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an array of pixels arranged into a plurality of rows, each pixel including a common electrode and an individually addressable pixel electrode, the common electrodes tied to a common alternating voltage source; a first module connected to the array of pixels and adapted to reorder a row update sequence such that alternating groups of even rows and groups of odd rows are updated; and a second module connected to the array of pixels and adapted to reorder a gate pulse sequence, wherein the gate-pulse sequence is adapted to select the rows in a group corresponding to the reordered row update sequence. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. A method of performing inversion in a liquid crystal display device, the method comprising:
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receiving a video feed adapted to progressively update rows of pixels within the liquid crystal display device; reordering the video feed such that a designated quantity of rows is first stored within a memory buffer, the designated quantity of rows containing the same number of even rows as odd rows, and the video feed being reordered so that the even rows are updated before the odd rows; and creating a gate pulse sequence adapted to select the rows corresponding to the reordered video feed. - View Dependent Claims (23, 24, 25, 26, 27)
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28. A mobile telephone including a display apparatus, the display apparatus comprising:
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an array of pixels arranged into a plurality of rows, each pixel including a common electrode and an individually addressable pixel electrode, the common electrodes tied to a common alternating voltage source; a first module connected to the array of pixels and adapted to reorder a row update sequence such that alternating groups of even rows and groups of odd rows are updated; and a second module connected to the array of pixels and adapted to reorder a gate pulse sequence, wherein the gate-pulse sequence is adapted to select the rows in a group corresponding to the reordered row update sequence.
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29. A media player including a display apparatus, the display apparatus comprising:
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an array of pixels arranged into a plurality of rows, each pixel including a common electrode and an individually addressable pixel electrode, the common electrodes tied to a common alternating voltage source; a first module connected to the array of pixels and adapted to reorder a row update sequence such that alternating groups of even rows and groups of odd rows are updated; and a second module connected to the array of pixels and adapted to reorder a gate pulse sequence, wherein the gate-pulse sequence is adapted to select the rows in a group corresponding to the reordered row update sequence.
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30. A personal computer including a display apparatus, the display apparatus comprising:
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an array of pixels arranged into a plurality of rows, each pixel including a common electrode and an individually addressable pixel electrode, the common electrodes tied to a common alternating voltage source; a first module connected to the array of pixels and adapted to reorder a row update sequence such that alternating groups of even rows and groups of odd rows are updated; and a second module connected to the array of pixels and adapted to reorder a gate pulse sequence, wherein the gate-pulse sequence is adapted to select the rows in a group corresponding to the reordered row update sequence.
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Specification