Methods for making display

• US 7,538,756 B2
• Filed: 12/17/2004
• Issued: 05/26/2009
• Est. Priority Date: 12/17/2004
• Status: Expired due to Fees

• Current Assignee: Eastman Kodak Company
• Original Assignee: Eastman Kodak Company
• Inventors: Tredwell, Timothy J., Kerr, Roger S.
• Primary Examiner(s): LEWIS, DAVID LEE
• Application Number:
  US11/016,459
• Publication Number:
  US 20060132477A1
• Time in Patent Office: 1,621 Days
• Field of Search: 345/104, 345/107, 345156-184, 345/10
• US Class Current: 345/104
• CPC Class Codes: G09G 2310/02 Addressing, scanning or driving the display screen or processing steps related thereto
• CPC Class Codes: G09G 3/001 using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background slide projectors per se G03B23/00 = 42 HP
• CPC Class Codes: G09G 3/06 using controlled light sources
• CPC Class Codes: G09G 3/3208 organic, e.g. using organic light-emitting diodes [OLED]
• CPC Class Codes: H01L 33/20 with a particular shape, e.g. curved or truncated substrate

Abstract

Methods for forming a display using imaging elements are provided. In one method, a first surface is provided and imaging elements are provided on the first surface. The imaging elements are positionally aligned and a location order is determined for the imaging elements. Wherein the imaging elements each comprise: a wireless communication circuit adapted to detect a wireless communication signal and to generate a control signal; an illumination circuit having an illumination element, said illumination circuit being adapted so that the illumination element generates light at an intensity that is based upon the control signal. A body is provided containing the wireless communication circuit and the light source; wherein the body occupies a space that is less than about five cubic millimeters.

Claims

1. A method for forming a display using imaging elements adapted to generate light, the method comprising the steps of:

providing a first surface;

providing a plurality of imaging elements on the first surface; and

determining location information for each of the imaging elements, wherein each of the imaging elements includes;

an individual wireless communication circuit adapted to detect a wireless communication signal and to generate a control signal;

an illumination circuit having an illumination element, said illumination circuit being adapted so that the illumination element generates light at an intensity that is based upon the control signal; and

a body containing the wireless communication circuit and the light source;

wherein said body occupies a space that is less than about five cubic millimeters.

2. The method of claim 1, wherein the step of providing a first surface comprises providing a first surface of a flexible material having recesses therein adapted to receive the imaging elements, and wherein the step of providing imaging elements on the first surface further comprises binding the imaging elements to the surface by applying a fluidic slurry containing a carrier fluid and the imaging elements to the first surface that the imaging elements can bind to the recesses.

3. The method of claim 1, wherein the step of providing a first surface comprises providing a first surface of a web of a flexible material and wherein the step of providing imaging elements comprises applying a fluidic slurry containing a carrier fluid and the imaging elements to the first surface;

and wherein the step of providing the imaging elements on the first surface comprises modifying the fluid so that the fluid holds the imaging elements on the first surface.

4. The method of claim 1, wherein the step of providing a first surface comprises providing a first surface of a web of a flexible material, wherein the step of providing imaging elements comprises applying a fluidic slurry containing a carrier fluid and imaging elements to distribute said imaging elements on the first surface and joining a second surface to hold the imaging elements to between the first surface and the second surface.

5. The method of claim 1, further comprising the steps of providing, in at least one layer, on the first surface a first electrical conductor adapted to engage a first portion of the imaging elements, and a second electrical conductor adapted to engage a second portion of the imaging elements, with an insulator therebetween so that electrical energy can be applied from the first conductor to the second conductor and to the imaging elements.

6. The method of claim 1, further comprising the steps of providing on the first surface a power supply circuit adapted to provide power to the imaging elements.

7. The method of claim 6, further comprising the steps of forming on the first surface, an electrical power supply capable of storing electrical power.

8. The method of claim 1, wherein the location information comprises data that associates individual ones of the imaging elements with particular locations on the display so that the location information can be used to transmit wireless signals to selected imaging elements in the display so that said imaging elements can be selectively actuated to form an image.

9. The method of claim 6, wherein the power circuit is adapted to provide power from an external source to the imaging elements.

10. The method of claim 6, wherein said power supply circuit comprises a fluid provided around the imaging elements, said fluid being adapted to provide a difference of potential across electrically conductive portions of the imaging elements.

11. The method of claim 6, wherein the power circuit incorporates an antenna to receive wireless signals and conversion circuits to convert received signals into a source of sufficient electrical power to allow the imaging elements to emit a desired amount of light wherein the step of providing imaging elements on the first surface.

12. The method of claim 1, further comprising the step of positionally aligning the imaging elements on the surface.

13. The method of claim 1, wherein the imaging elements are adapted to positionally respond to an applied electromagnetic field further comprising a step of positionally aligning the imaging elements by an electromagnetic field adapted to align the imaging elements in a preferred orientation.

14. The method of claim 1, wherein the step of providing a first surface comprises the step of applying a liquid slurry having imaging elements therein to the first surface so that the imaging elements are bound to the surface.

15. The method of claim 1, wherein the step of providing a first surface comprises a providing the mixture of a surface forming material and imaging elements and using the mixture to form a surface.

16. The method of claim 1, wherein the first surface is adapted with cavities shaped to receive the imaging elements.

17. The method of claim 1, wherein the step of providing a first surface comprises applying a coating of a binding material having imaging elements therein said binding material being adapted to secure the imaging elements to said first surface.

31. The method of claim 16, wherein the fluid is processed to form the surface.

18. A method for forming a display, the method comprising the steps of:

providing a slurry comprising a plurality of imaging elements in a fluid each imaging element being adapted to cause a radiation sensor to sample radiation and to individually transmit a wireless signal indicating the amount of radiation in the sample and with each imaging element further being adapted to individually receive a wireless signal having an illumination value therein and to generate a control signal causing an illumination element to generate light at an intensity that is determined based upon the control signal;

said plurality being adequate in number for sampling an irradiance pattern with sufficient resolution to allow a discernable image to be assembled based upon the samples;

using said slurry to provide a plurality of individual imaging elements across an image capture area of a surface; and

associating each imaging element with location information so that signals from each imaging element can be assembled to form an image of the light that is incident upon the imaging element.

19. The method of claim 18, wherein the step of using said slurry to provide a plurality of individual imaging elements across an image capture area of a surface comprises the step of:

magnetically orienting a plurality of said individual imaging elements and fixing the individual imaging elements in the oriented arrangement.

20. The method claim 18, wherein the step of magnetically orienting said plurality of said individual imaging elements comprises the step of providing relative motion between a magnet and said surface.

21. The method of claim 18, wherein the step of associating comprises directing energy at a point on the surface so that an imaging element at that location will generate a signal and using the signal generated by the imaging element at the location as a reference point for determining the location information for other imaging elements on said surface.

22. The method of claim 18, wherein the step of associating comprises directing energy at an arrangement of locations on the surface so that an imaging element at those locations will generate a signal and using the signal generated by the imaging element at each location to determine the location information for that imaging element.

23. The method of claim 18, further comprising the step of causing the imaging elements to sample light incident thereon for a sample period, wherein the associating step comprises the steps of:

directing a wireless signal to a sequence of locations on the surface adapted to cause an imaging element on the surface to provide a wireless signal indicative of the exposure of the imaging element to the energy; and

associating with each received wireless signal with location information that is determined based upon the location at which the wireless signal is directed.

24. The method of claim 23, wherein the energy directed at each location is constant and wherein each imaging element is adapted to provide said wireless signal with indicative of the energy level sensed by the each imaging element, with the method further comprising the step of determining the relative sensitivity of each imaging element based upon the sensed energy level.

25. The method of claim 24, further comprising the steps of directing energy at one other point on the surface and using a signal from said imaging element at said reference point and at least one other signal from a second said imaging element at the other point for locating at least a second reference point so that the first and second reference points can be used to locate the other imaging elements.

26. The method claim 18, wherein the step of associating comprises:

determining location information for each imaging element; and

transmitting differentiable location data to said imaging element, so that a signal transmitted by said imaging element has at least the identification data and a data value representing the amount of radiation in a sample.

27. The method of claim 18, wherein said surface is partially reflective.

28. The method of claim 18, wherein the step of said surface has cavities thereon adapted to receive the imaging elements and wherein said dispensing fluid carries the imaging elements so that substantially all of the cavities receive a imaging element.

29. The method of claim 28, wherein the cavities are adapted to receive the imaging elements and to position the imaging elements in a desired orientation.

30. The method of claim 18, wherein said fluid is adapted to hold the imaging elements to a surface.

32. A method for assigning positional coordinates to an imaging element in a grouping of imaging elements comprising the steps of:

identifying a first reference imaging element at a first coordinate reference point, a second reference imaging element at a second coordinate reference point, and a third reference imaging element at a third coordinate reference point;

prompting another imaging element to emit at least one locator signal;

receiving said locator signal and locator signals from at least each of said first, second, and third reference imaging elements; and

applying a triangulation calculation to identify the positional coordinates of the imaging element relative to said first, second, and third coordinate reference points.