MEMS shutter assemblies for high-resolution displays
This disclosure provides systems, methods and apparatus for generating images using dual-shutter shutter assemblies. Such shutter assemblies include two shutters that move over a common aperture to selectively obstruct the passage of light there through. In the closed position, portions of one of the shutters overlaps a portion of the other shutter to provide such light obstruction without the two shutters needing to come into contact.
1. An apparatus, comprising:
a first light obstructing component configured to be moved with respect to an aperture to selectively obstruct passage of light through the aperture; and
a second light obstructing component configured to be moved with respect to the same aperture as the first light blocking component to selectively obstruct the passage of light through the aperture;
a first electrostatic actuator configured to selectively move the first light blocking component into a first open position; and
a second electrostatic actuator configured to selectively move the second light blocking component into a second open position,
wherein:
when both the first and second light obstructing components are in a closed position, the first and second light obstructing components together block substantially all of the light passing through the aperture, and a first portion of the first light obstructing component extends over a first portion of the second light blocking component and substantially abuts a second portion of the second light blocking component, and wherein the first and second light blocking components include light blocking portions that extend over at least parts of their respective electrostatic actuators when the first and second light blocking components are in their respective open positions.
2. The apparatus of claim 1 , further comprising a third actuator positioned between the first and second light blocking components configured to selectively move at least one of the first and second light blocking components into the closed position.
3. The apparatus of claim 1 , wherein portions of the first and second light blocking components form opposing electrodes of a third actuator, such that when a potential difference is applied across the first and second light blocking components, the first and second light blocking components are drawn together into the closed position.
4. The apparatus of claim 1 , wherein the first and second actuators are configured to operate independently of one another.
5. The apparatus of claim 1 , wherein each of the first and second light blocking components includes a proximal light blocking level and a distal light blocking level.
6. The apparatus of claim 5 , wherein the portion of the first light blocking component that extends over the first portion of the second light blocking component is a portion of the distal light blocking level of the first light blocking component, the first portion of the second light blocking component is a portion of the proximal light blocking level of the second light blocking component, and the second portion of the second light blocking component is a portion of the distal light blocking level of the second light blocking component.
7. The apparatus of claim 1 , further comprising:
a display including the EMS display element;
a processor that is configured to communicate with the display, the processor being configured to process image data; and
a memory device that is configured to communicate with the processor.
8. The apparatus of claim 7 , further comprising:
a driver circuit configured to send at least one signal to the display; and wherein
the processor is further configured to send at least a portion of the image data to the driver circuit.
9. The apparatus of claim 7 , further comprising:
an image source module configured to send the image data to the processor, wherein the image source module comprises at least one of a receiver, transceiver, and transmitter.
10. The apparatus of claim 7 , further comprising:
an input device configured to receive input data and to communicate the input data to the processor.