MEMS DISPLAY

• US 20090213449A1
• Filed: 05/04/2009
• Published: 08/27/2009
• Est. Priority Date: 12/09/2003
• Status: Active Grant

• Current Assignee: Snaptrack Incorporated (Qualcomm, Inc.)
• Original Assignee: IDC, LLC
• Inventors: Chui, Clarence, Mignard, Marc, Mathew, Mithran C.
• Granted Patent: US 7,864,402 B2
• Time in Patent Office: Days
• US Class Current: 359/290
• CPC Class Codes: G02B 26/001 based on interference in an adjustable optical cavity interference filters G02B5/28; devices or arrangements using multiple reflections in spectrometry or monochromators G01J3/26
• CPC Class Codes: G09G 2300/06 Passive matrix structure, i.e. with direct application of both column and row voltages to the light emitting or modulating elements, other than LCD or OLED
• CPC Class Codes: G09G 2310/0267 Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays
• CPC Class Codes: G09G 2310/0297 Special arrangements with multiplexing or demultiplexing of display data in the drivers for data electrodes, in a pre-processing circuitry delivering display data to said drivers or in the matrix panel, e.g. multiplexing plural data signals to one D/A converter or demultiplexing the D/A converter output to multiple columns
• CPC Class Codes: G09G 3/2074 using sub-pixels
• CPC Class Codes: G09G 3/2081 with combination of amplitude modulation and time modulation space and time error diffusion G09G3/2066
• CPC Class Codes: G09G 3/3466 based on interferometric effect

Abstract

A displaying apparatus that includes a plurality of electromechanical system elements arranged in rows. The electromechanical system elements of each of the rows are further arranged in subrows. The subrows of each row are electrically connected. Certain of the electromechanical system elements have a hysteresis stability window that is nested with another hysteresis stability window of certain others of the electromechanical system elements. A method of manufacturing a displaying apparatus that includes forming a plurality of electromechanical system elements arranged in rows. The electromechanical system elements of each of the rows are further arranged in subrows. The subrows of each row are electrically connected. Certain of the electromechanical system elements have a hysteresis stability window that is nested with another hysteresis stability window of certain others of the electromechanical system elements.

Claims

1. A displaying apparatus comprising:

a plurality of electromechanical system elements arranged in rows, wherein the electromechanical system elements of each of the rows are further arranged in subrows and wherein the subrows of each row are electrically connected; and

wherein certain of the electromechanical system elements have a hysteresis stability window that is nested with another hysteresis stability window of certain others of the electromechanical system elements.

2. The apparatus of claim 1, wherein the plurality of electromechanical system elements have a plurality of hysteresis stability windows, ranging from a widest hysteresis stability window and a narrowest hysteresis stability window.

3. The apparatus of claim 1, wherein the certain of the electromechanical system elements and the certain others of the electromechanical system elements have differing spring constants for deflectable portions of the elements to effect differing hysteresis stability windows.

4. The apparatus of claim 1, wherein the certain of the electromechanical system elements and the certain others of the electromechanical system elements have differing film thicknesses to effect differing hysteresis stability windows.

5. The apparatus of claim 1, wherein the certain of the electromechanical system elements and the certain others of the electromechanical system elements have differing damping forces caused by air between movable mirrors and fixed mirrors in respective electromechanical system elements to effect differing hysteresis stability windows.

6. The apparatus of claim 1, wherein the certain of the electromechanical system elements and the certain others of the electromechanical system elements have differing masses of movable mirrors in respective electromechanical system elements to effect differing hysteresis stability windows.

7. The apparatus of claim 1, wherein the certain of the electromechanical system elements and the certain others of the electromechanical system elements have differing materials in respective electromechanical system elements to effect differing hysteresis stability windows.

8. The apparatus of claim 1, wherein the certain of the electromechanical system elements and the certain others of the electromechanical system elements have differing geometries in respective electromechanical system elements to effect differing hysteresis stability windows.

9. The apparatus of claim 1, wherein the plurality of electromechanical system elements comprise a plurality of interferometric modulators.

10. The apparatus of claim 1, additionally comprising:

a plurality of resistors, each of the resistors connected to a respective one of the subrows, a respective one of the resistors for each of the subrows of each row having a different resistance from the resistors connected to other subrows of the row, wherein the plurality of electromechanical system elements and the plurality of resistors constitute a display; and

a processor that is configured to communicate with the display, the processor being configured to process image data.

11. A method of manufacturing a displaying apparatus, the method comprising:

forming a plurality of electromechanical system elements arranged in rows, wherein the electromechanical system elements of each of the rows are further arranged in subrows, wherein the subrows of each row are electrically connected, and wherein certain of the electromechanical system elements have a hysteresis stability window that is nested with another hysteresis stability window of certain others of the electromechanical system elements.

12. The method of claim 11, wherein the plurality of electromechanical system elements have a plurality of hysteresis stability windows, ranging from a widest hysteresis stability window and a narrowest hysteresis stability window.

13. The apparatus of claim 11, wherein the certain of the electromechanical system elements and the certain others of the electromechanical system elements have differing spring constants for deflectable portions of the elements to effect differing hysteresis stability windows.

14. The apparatus of claim 11, wherein the certain of the electromechanical system elements and the certain others of the electromechanical system elements have differing film thicknesses to effect differing hysteresis stability windows.

15. The apparatus of claim 11, wherein the certain of the electromechanical system elements and the certain others of the electromechanical system elements have differing damping forces caused by air between movable mirrors and fixed mirrors in respective electromechanical system elements to effect differing hysteresis stability windows.

16. The apparatus of claim 11, wherein the certain of the electromechanical system elements and the certain others of the electromechanical system elements have differing masses of movable mirrors in respective electromechanical system elements to effect differing hysteresis stability windows.

17. The apparatus of claim 11, wherein the certain of the electromechanical system elements and the certain others of the electromechanical system elements have differing materials in respective electromechanical system elements to effect differing hysteresis stability windows.

18. The apparatus of claim 11, wherein the certain of the electromechanical system elements and the certain others of the electromechanical system elements have differing geometries in respective electromechanical system elements to effect differing hysteresis stability windows.

19. A method of manufacturing a displaying apparatus, the method comprising:

forming a plurality of electromechanical system elements arranged in rows, wherein the electromechanical system elements of each of the rows are further arranged in subrows, and wherein the subrows of each row are electrically connected; and

forming a plurality of resistors, each of the resistors connected to a respective one of the subrows, a respective one of the resistors for each of the subrows of each row having a different resistance from the resistors connected to other subrows of the row.

20. A method of displaying data, the method comprising:

receiving an image data signal; and

controlling a plurality of electromechanical system elements based, at least in part, upon the image data signal;

wherein the plurality of electromechanical system elements are arranged in rows, wherein the electromechanical system elements of each of the rows are further arranged in subrows, wherein the subrows of each row are electrically connected, and wherein the plurality of electromechanical system elements are connected to a plurality of resistors, each of the resistors connected to a respective one of the subrows, a respective one of the resistors for each of the subrows of each row having a different resistance from the resistors connected to other subrows of the row.