Large scale LED display

• US 8,803,766 B2
• Filed: 03/21/2011
• Issued: 08/12/2014
• Est. Priority Date: 12/11/2007
• Status: Expired due to Fees

• Current Assignee: ADTI Media, LLC140
• Original Assignee: ADTI Media, LLC140
• Inventors: Kline, Daniel S., Shankle, Matthew W., Cox, David F., Lee, James C., Sarcia, Sam R.
• Primary Examiner(s): HERNANDEZ, JESUS J
• Application Number:
  US13/052,839
• Publication Number:
  US 20110215992A1
• Time in Patent Office: 1,240 Days
• Field of Search: None
• US Class Current: 345/46
• CPC Class Codes: G09F 27/008 Sun shades, shades, hoods or louvres on electronic displays to minimise the effect of direct sun light on the display
• CPC Class Codes: G09F 9/3026 Video wall, i.e. stackable semiconductor matrix display modules video wall control systems G06F3/1446, G09G2300/026
• CPC Class Codes: G09F 9/33 being semiconductor devices, e.g. diodes
• CPC Class Codes: G09G 2380/06 Remotely controlled electronic signs other than labels
• CPC Class Codes: G09G 3/2074 using sub-pixels
• CPC Class Codes: G09G 3/22 using controlled light sources

Abstract

A large scale LED display has a cable and rigid link support structure for a number of LED modules. The cable and rigid link support structure is flexible but has sufficient structural integrity to prevent misalignment of the pixel modules. The LED modules are removable from the support structure individually and as a group so as to facilitate repair of the display. The LED modules are rugged so as to withstand harsh outdoor conditions and they provide sufficient luminescence for use in sunlight.

Claims

1. A segment of LED modules for use in a display, comprising:

a first electrical connector fixedly attached to a first end of a slave segment of the segment, wherein the segment includes a single master LED module and the slave segment, wherein the slave segment includes a plurality of slave LED modules, wherein the single master LED module controls the slave LED modules of the slave segment;

a second electrical connector fixedly attached to a second end of the slave segment of the segment;

a plurality of slave LED modules connected between the first electrical connector and the second electrical connector, the slave LED modules being connected end to end by at least one cable that carries power and data to each of the slave LED modules, wherein the at least one cable is connected to the first electrical connector and the second electrical connector, wherein the single master LED module of the segment is connected to the first electrical connector and provides power and data to each of the slave LED modules of the slave segment through the at least one cable, wherein another single master LED module of another segment is connected to the second electrical connector; and

a further cable connected directly between the first connector and the second connector for carrying data between the first and second connectors, wherein the further cable is disposed in an aligned direction with the at least one cable, wherein the further cable provides data directly between the single master LED module of the segment and the another single master LED module of another segment,

wherein each slave LED module and each single master LED module has its own separate housing that supports a plurality of LEDs.

2. The segment of LED modules according to claim 1, wherein each slave LED module includes a housing with a back wall having a channel formed therein for the further cable to pass therethrough under the slave LED module housing.

6. The segment of LED modules according to claim 1, wherein a plurality of segments form a large LED display, and wherein the plurality of segments of LED modules are configured so that the master LED modules from different segments are in a same row and are in multiple rows.

7. The segment according to claim 1, wherein the segment is adjacent to the another segment, but the single master LED module of the segment is not adjacent to the another single master LED module of the another segment.

8. The segment according to claim 1, wherein the single master LED module is directly connected to the first electrical connector, and wherein the other single master LED module is directly connected to the second electrical connector.

9. The segment according to claim 1, wherein the segment and the another segment are placed end to end in a row or a column of a large LED display.

10. The segment according to claim 1, wherein a slave LED module in a first segment is not a slave LED module in a second segment, and wherein the slave LED module in the first segment is not a master LED module in the first segment or the second segment.

11. The segment according to claim 1, wherein the further cable passes through the slave segment, but communicatively bypasses the slave LED modules of the slave segment to provide direct communication between the single master LED module of the segment and the another single master LED module of another segment.

12. The segment according to claim 1, wherein slave LED modules are spaced by rigid links between cables supporting the slave LED modules, wherein the rigid links are formed by injection molding around the cables.

13. The segment according to claim 1, wherein the first electrical connector and the second electrical connector have respective housings that are separate from the housings of the slave LED modules.

14. The segment according to claim 1, wherein the second electrical connector provides direct electrical connection between the single master LED module of the segment and the another single master LED module of the another segment.

15. The segment according to claim 1, wherein the connection between the single master LED module of the segment and a first slave LED module of the segment can fail without affecting the connection between the single master LED module of the segment and the second slave LED module of the segment.

16. The segment according to claim 1, wherein the single master LED module of the segment extracts data intended for the single master LED module of the segment and the slave LED modules of the segment.

17. The segment according to claim 1, wherein the single master LED module has more heat sink fins than a slave LED module of the same segment.

18. The segment according to claim 1, wherein the segments are disposed end to end in a column so that master LED modules aligned in multiple rows of a large LED display, wherein all of the LED modules in a particular segment are removable only as a group.

19. The segment according to claim 1, wherein the segments are disposed end to end in a column so that master LED modules aligned in multiple rows of a large LED display, wherein each segment is removable from the large LED display independent of the other segments.

20. The segment according to claim 1, wherein the further cable is disposed in an aligned direction with the at least one cable.

3. A segment of LED modules for use in a display, comprising:

a first electrical connector fixedly attached to a first end of a slave segment of the segment, wherein the segment includes a single master LED module and the slave segment, wherein the slave segment includes a plurality of slave LED modules, wherein the single master LED module controls the slave LED modules of the slave segment;

a second electrical connector fixedly attached to a second end of the slave segment of the segment;

a plurality of slave LED modules connected between the first electrical connector and the second electrical connector, the slave LED modules being connected end to end by at least one cable that carries power and data to each of the slave LED modules, wherein the at least one cable is connected to the first electrical connector and the second electrical connector, wherein the single master LED module of the segment is connected to the first electrical connector and provides power and data to each of the slave LED modules of the slave segment through the at least one cable, wherein another single master LED module of another segment is connected to the second electrical connector; and

a further cable connected directly between the first connector and the second connector for carrying data between the first and second connectors, wherein the further cable is disposed in an aligned direction with the at least one cable, wherein the further cable provides data directly between the single master LED module of the segment and the another single master LED module of another segment,

wherein each slave LED module and each single master LED module has its own separate housing that supports a plurality of LEDs which comprise one or more red LEDs, one or more green LEDs and one or more blue LEDs.

4. The segment of LED modules according to claim 3, wherein a front surface of the housing includes a plurality of sunshade protrusions, each protrusion extending outwardly above one or more of the plurality of LEDs.

5. The segment of LED modules according to claim 4, wherein each of the plurality of LEDs has an individual sunshade protrusion extending outwardly above the LED.