Systems and methods of actuating MEMS display elements
First Claim
1. A display apparatus, comprising:
- an array comprising a plurality of MEMS display elements; and
an array controller connected to said array, said array controller configured to write a frame of data to the array in a two-portion write operation by applyinga first potential to each of said MEMS display elements during a first portion of a frame data write operation, said first potential corresponding to a first display state for each of said MEMS display elements that is opposite of a second display state, the first display state of each of said MEMS display elements being based on the second display state of each respective MEMS display element, anda second potential to each of said MEMS display elements during a second portion of the frame data write operation, said second potential corresponding to the second display state, the second display state being opposite the first display state for each of said MEMS display elements, the second display state displaying the frame of data on the array after the write operation is completed.
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Accused Products
Abstract
Apparatus and methods of actuating MEMS display elements are disclosed. The disclosed embodiments can be incorporated into other drive schemes for MEMS display elements. In one embodiment, an apparatus for controlling a MEMS display element to display a frame of video data, said MEMS display element comprising a portion of an array of MEMS display elements, includes an array controller configured to assert a potential difference on said MEMS display element during a first portion of a frame display write process to place the MEMS display element in a first display state, and to assert a potential difference on said MEMS display element during a second portion of the frame display write process to place the MEMS display element in a second display state to display the frame of the video data, where the first display state is different from the second display state. In another embodiment, an array controller asserts a large potential difference across a MEMS display element to affect charge build up and an offset voltage level. In another embodiment, an array controller asserts a series of pulses to rapidly switch the MEMS display element between states to overcome adverse conditions that may affect the operation of the MEMS display element.
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Citations
13 Claims
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1. A display apparatus, comprising:
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an array comprising a plurality of MEMS display elements; and an array controller connected to said array, said array controller configured to write a frame of data to the array in a two-portion write operation by applying a first potential to each of said MEMS display elements during a first portion of a frame data write operation, said first potential corresponding to a first display state for each of said MEMS display elements that is opposite of a second display state, the first display state of each of said MEMS display elements being based on the second display state of each respective MEMS display element, and a second potential to each of said MEMS display elements during a second portion of the frame data write operation, said second potential corresponding to the second display state, the second display state being opposite the first display state for each of said MEMS display elements, the second display state displaying the frame of data on the array after the write operation is completed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A display apparatus, comprising:
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means for modulating light to display a frame of data; and means for performing a two-portion write operation to display the frame of data on the light modulating means, said write operation comprising applying a first potential to the light modulating means during a first portion of a frame data write operation to place the light modulating means in a first display state, the first display state being based on a second display state and opposite the second display state; and applying a second potential to the light modulating means during a second portion of the frame data write operation to place the light modulating means in the second display state, the second different display state being opposite the first display state for each of the light modulating means, wherein the frame of data is displayed when the light modulating means are in the second display state. - View Dependent Claims (11, 12, 13)
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Specification