System and method of driving an array of optical elements

• US 20050264474A1
• Filed: 08/06/2005
• Published: 12/01/2005
• Est. Priority Date: 08/07/2000
• Status: Abandoned Application

• Current Assignee: Rodger H. Rast
• Original Assignee: Rodger H. Rast
• Inventors: Rast, Rodger H.
• Application Number:
  US11/197,939
• Publication Number:
  US 20050264474A1
• Time in Patent Office: Days
• US Class Current: 345/55
• CPC Class Codes: G09G 2300/0809 Several active elements per pixel in active matrix panels
• CPC Class Codes: G09G 2310/0272 Details of drivers for data electrodes, the drivers communicating data to the pixels by means of a current
• CPC Class Codes: G09G 3/00 Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
• CPC Class Codes: G09G 3/03 specially adapted for displays having non-planar surfaces, e.g. curved displays
• CPC Class Codes: G09G 3/14 Semiconductor devices, e.g. diodes
• CPC Class Codes: G09G 3/3216 using a passive matrix
• CPC Class Codes: G09G 3/3283 in which the data driver supplies a variable data current for setting the current through, or the voltage across, the light-emitting elements

Abstract

A system and/or method for controlling a display array without the use of row and column drivers. The display elements within the system are configured to maintain an active address signal in response to a received signal containing serially encoded display settings. Each display element is loaded with an address of where it is located within the array. The display elements then extract the display information from the signal upon matching the address, wherein they output the correct display setting for their position within the array. An optical programming method is described for setting the address of the display elements in-situ.

Claims

1. A method of controlling a display element, comprising the steps of:

programming a memory within a display element to a first address corresponding to the position of the display element within an array of other display elements;

detecting a match between said first address and a second address contained within a data signal that is received in parallel by display elements within the array;

loading a predetermined number of bits of display data from the data signal in response to said match; and

outputting said number of bits to a optical element driver which controls the intensity and/or color of at least one optical element within the display element in response to said bits.

2. A method as recited in claim 1, wherein said data signal is extracted from a two lead power bus coupled to the display element on which the data signal has been superimposed for receipt by the display element.

3. A method as recited in claim 1, wherein the at least one optical element comprises one light emitting diode (LED) of a desired color, or multiple LEDs of at least one color.

4. A method of driving display elements, comprising:

generating a display signal containing a series of display settings in a pattern from which a display element address may be determined;

transmitting said signal to an array of synchronous display element;

receiving said signal within a synchronous display element;

detecting an address match for the display element within the signal;

extracting the display setting from the signal for the display element; and

outputting a display setting in response to the extracted display setting.

5. A method of programming an array address within an element of an array, comprising:

configuring display elements with an optical detector;

configuring display elements with a non-volatile section of memory for retaining an address;

optically coupling a programming array to the array of display elements;

engaging the address programming for the displaying elements; and

loading the address embedded within the signal in response to the detection of sufficient light input.

6-82. -82. (canceled)