Display Screen Addressing System

• US 20080211748A1
• Filed: 10/08/2003
• Published: 09/04/2008
• Est. Priority Date: 10/10/2002
• Status: Abandoned Application

• Current Assignee: Newstep
• Original Assignee: INANOV Company
• Inventors: Peyre, Jean-Francois, Favreau, Jean-Chretien, Mauger, Matthieu
• Application Number:
  US10/530,605
• Publication Number:
  US 20080211748A1
• Time in Patent Office: Days
• US Class Current: 345/77
• CPC Class Codes: G06F 3/1446 display composed of modules, e.g. video walls
• CPC Class Codes: G09G 2320/0626 for control of overall brightness
• CPC Class Codes: G09G 2360/144 the light being ambient light
• CPC Class Codes: G09G 3/006 Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays testing individual LED's G01R31/2635; testing lamps G01R31/44; testing of optical features of LCD displays G02F1/1309
• CPC Class Codes: G09G 3/2088 with use of a plurality of processors, each processor controlling a number of individual elements of the matrix

Abstract

A display device comprising individual elements wherein the placement, on each element, of an electronic microcircuit capable of recognizing its address among those of other microcircuits connected in parallel to the common addressing electrodes, recording the brightness data sent to its address and modulating the brightness of its display element according to the data received.

Claims

1. A display device comprising individual elements wherein the placement, on each element, of an electronic microcircuit capable of recognizing its address among those of other microcircuits connected in parallel to the common addressing electrodes, recording the brightness data sent to its address and modulating the brightness of its display element according to the data received.

2. The device of claim 1, wherein it includes one display element and one microcircuit per elementary color point of the image.

3. The device of claim 1, wherein each microcircuit manages several color points or elementary points adjacent to the image on one or more addresses.

4. The device of claim 1, wherein the individual addresses are engraved on a microcircuit during its manufacture and remain visible for optical reading of this said address during assembly of the display screen.

5. The device of claim 1, wherein the individual addresses are written electrically in a non-volatile memory area of the microcircuit during assembly of the display screen.

6. The device of claim 1, wherein the display screen is divided into several addressing areas controlled independently and simultaneously so as to reduce the frequency of the addressing signals.

7. The device of claim 1, wherein each microcircuit can record, in addition to its individual address and in a preset order, the addresses of one or more display elements, adjacent or otherwise, and is capable, if it detects the transmission of one of said recorded addresses, of counting the number of brightness data sent in series and without a new address, and loading after this counting the data which is addressed to it.

8. The device of claim 1, wherein the microcircuit has means enabling it to detect that the user has touched or pressed the screen close to the corresponding display element and means to send this information back, with its individual address, to the common addressing and power supply electrodes.

9. The device of claim 1, wherein the microcircuit has means enabling it to correct the modulation of its display element according to a local measurement, for example of the current, or a correction coefficient sent by the addressing system.

10. The device of claim 1, wherein the microcircuit has means enabling it to recognize certain preset global addresses and then to place itself in a preset test mode.