COMPACT ANCHOR FOR EMS DISPLAY ELEMENTS
This disclosure provides systems, methods and apparatus for shutter-based EMS light modulators controlled by electrode actuators that include a compact anchor. The compact anchor includes four sides. Each of the four sides includes a lower wall, while only three of the sides include a lower shelf, upper wall and eave. That is, a first side includes a lower wall having an upper surface that is substantially the same thickness as the material forming the lower wall.
1 . An apparatus, comprising:
a light obstructing component suspended over a substrate;
an anchor, formed from a structural material, including:
a first side including a first wall oriented substantially normal to the substrate and a surface furthermost from the substrate having a width defined by the width of an eave extending outward from the wall; and
a second side including a second wall oriented substantially normal to the substrate and a surface furthermost form the substrate having a width defined substantially by the thickness of the second wall; and
an actuator capable of moving the light obstructing component, the actuator including a beam electrode coupled at one end to the anchor and extending along the second side of the anchor.
2 . The apparatus of claim 1 , wherein a height of the first side of the anchor along a dimension substantially normal to the substrate is substantially greater than a height of the second side of the anchor along the same dimension.
3 . The apparatus of claim 1 , wherein the beam electrode is suspended over the substrate by a height greater than a height of the second side.
4 . The apparatus of claim 1 , wherein the first wall of the first side includes a lower wall and an upper wall joined by a surface oriented substantially parallel to the substrate
5 . The apparatus of claim 1 , wherein the anchor further includes a floor.
6 . The apparatus of claim 5 , further comprising a gap in the flop of the anchor adjacent a base of the second wall.
7 . The apparatus of claim 6 , wherein a closest horizontal distance between a portion of the beam electrode extending alongside the second side of the anchor and an edge of the gap furthest from the beam electrode is about 3 μm.
8 . The apparatus of claim 1 , wherein a horizontal distance between a portion of the beam electrode extending alongside the second side of the anchor and an outer surface the second wall is less than about 3 μm.
9 . The apparatus of claim 1 , further comprising:
a display;
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.
10 . The apparatus of claim 9 , further comprising:
a driver circuit configured to send at least one signal to the display; and
a controller configured to send at least a portion of the image data to the driver circuit.
11 . The apparatus of claim 9 , 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.
12 . The apparatus of claim 9 , further comprising:
an input device configured to receive input data and to communicate the input data to the processor.
13 . A method of forming a display apparatus, comprising:
providing a substrate;
forming a light obstructing component suspended over the substrate;
forming an anchor from a structural material, the anchor including:
a first side including a first wall oriented substantially normal to the substrate and a surface furthermost from the substrate having a width defined by the width of an eave extending outward from the wall; and
a second side including a second wall oriented substantially normal to the substrate and a surface furthermost form the substrate having a width defined substantially by the thickness of the second wall; and
forming an actuator capable of moving the light obstructing component, the actuator including a beam electrode coupled at one end to the anchor and extending along the second side of the anchor.
14 . The method of claim 13 , wherein a height of the first side of the anchor along a dimension substantially normal to the substrate is substantially greater than a height of the second side of the anchor along the same dimension.
15 . The method of claim 13 , wherein the beam electrode is suspended over the substrate by a height greater than a height of the second side.
16 . The method of claim 13 , wherein the first wall of the first side includes a lower wall and an upper wall joined by a surface oriented substantially parallel to the substrate
17 . The method of claim 13 , wherein the anchor further comprises a floor.
18 . The method of claim 17 , further comprising forming a gap in the flop of the anchor adjacent a base of the second wall.
19 . The method of claim 18 , wherein a closest horizontal distance between a portion of the beam electrode extending alongside the second side of the anchor and an edge of the gap furthest from the beam electrode is about 3 μm.
20 . The method of claim 13 , wherein a horizontal distance between a portion of the beam electrode extending alongside the second side of the anchor and an outer surface the second wall is less than about 3 μm.