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US 5,959,598 AGranted
Pixel buffer circuits for implementing improved methods of displaying grey-scale or color images
AssigneeThe Regents of the University of Colorado
InventorDouglas J. McKnight
Life of this patent
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Abstract
A device such as a display device or a spatial light modulator can store pixel data in a plurality of small circuits coupled to pixel mirrors and simultaneously drive these pixel mirrors a frame at a time. This device is particularly beneficial for implementing improved image quality techniques which can convert binary images to grey-scale images and/or separate red, green and blue images into color images and displaying those images using the natural process of integration which occurs when a person views images at sufficiently high rates.
Claims26
A device, comprising:
- a substrate having a first surface;
- a plurality of driving electrodes arranged on said first surface of the substrate;
- and
- a plurality of circuits arranged on said substrate and respectively coupled to said plurality of driving electrodes, for receiving and storing image data and for driving said plurality of driving electrodes a frame at a time synchronous with a switching signal;
- wherein each of said plurality of circuits comprises:
- a first switch coupled to a gate signal and a data line for receiving a pixel datum of said image data and outputting said pixel datum in accordance with said gate signal,
- a first inverter coupled to said first switch for receiving said pixel datum;
- a second switch coupled to a clock signal and said first inverter, and
- a second inverter coupled to said second switch and to a respective one of said plurality of driving electrodes, wherein said pixel datum is transmitted from said first inverter to said second inverter synchronous with said clock signal, and outputs said pixel datum to said respective one of the plurality of driving electrodes.
6 more elements
A device comprising:
- a substrate having a first surface;
- a plurality of driving electrodes arranged on said first surface of the substrate;
- and
- a plurality of circuits arranged on said substrate and respectively coupled to said plurality of driving electrodes, for receiving and storing image data and for driving said plurality of driving electrodes a frame at a time synchronous with a switching signal;
- wherein each of said plurality of circuits comprises:
- a first switch coupled to a gate signal and a data line for receiving a pixel datum of said image data and outputting said pixel datum in accordance with said gate signal,
- a capacitance means coupled to said first switch for receiving and storing said pixel datum,
- a second switch coupled to a clock signal and said first inverter, and
- an inverter coupled to said second switch and to a respective one of said plurality of driving electrodes, wherein said pixel datum is transmitted from said capacitor means to said inverter synchronous with said clock signal, and which outputs said pixel datum to said respective one of the plurality of driving electrodes.
6 more elements
A device, comprising:
- a substrate having a first surface;
- a plurality of driving electrodes arranged on said first surface of the substrate;
- and
- a plurality of circuits arranged on said substrate and respectively coupled to said plurality of driving electrodes, for receiving and storing image data and for driving said plurality of driving electrodes a frame at a time synchronous with a switching signal;
- wherein each of said plurality of circuits comprises:
- a first switch coupled to a gate signal and a data line for receiving a pixel datum of said image data and outputting said pixel datum in accordance with said gate signal,
- a capacitance means coupled to said first switch for receiving and storing said pixel datum,
- a second switch coupled to a global pull-up signal and said capacitance means, and
- an electrode driver coupled to said second switch and to a respective one of said plurality of driving electrodes, wherein said pixel datum is transmitted from said capacitor means to said electrode driver synchronous with said global pull-up signal, and which outputs said pixel datum to said respective one of the plurality of driving electrodes.
6 more elements
Dependencies are inferred from the claim text.