MODULAR LED DISPLAY STRUCTURE WITH CONNECTING EDGE BANDING TO CONNECT EACH OTHER

• US 20120019490A1
• Filed: 07/23/2010
• Published: 01/26/2012
• Est. Priority Date: 07/23/2010
• Status: Abandoned Application

• Current Assignee: APA Electronic Co., Ltd.
• Original Assignee: APA Electronic Co., Ltd.
• Inventors: Huang, Hsien-Jung
• Application Number:
  US12/842,551
• Publication Number:
  US 20120019490A1
• Time in Patent Office: Days
• US Class Current: 345/205
• CPC Class Codes: G09F 9/301 flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
• 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: G09G 2300/026 Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 3/32 semiconductive, e.g. using light-emitting diodes [LED]
• CPC Class Codes: H05K 1/142 Arrangements of planar printed circuit boards in the same plane, e.g. auxiliary printed circuit insert mounted in a main printed circuit
• CPC Class Codes: H05K 1/189 characterised by the use of a flexible or folded printed circuit H05K3/326 takes precedence
• CPC Class Codes: H05K 2201/10106 Light emitting diode [LED]
• CPC Class Codes: H05K 2201/2009 Reinforced areas, e.g. for a specific part of a flexible printed circuit

Abstract

A modular LED (Light Emitting Diode) display structure includes full-color LED units to be arranged in a matrix on a flexible PCB, and plurality of protective plates to protect connection between the full-color LED units and the transmission line of the flexible PCB. Also, the edge of the display has a connecting edge banding with a hook to form a track thereunder. The hook can clip the track of another LED module plate for connection to develop a lager LED display. Moreover, by a hanger connecting to the connecting edge banding to simplify the suspending of the LED display. Furthermore, each full-color LED units has a driving chip to enhance the resolution of the LED display.

Claims

1. A LED (Light Emitting Diode) display structure having a plurality of LED module plates connected each other, each LED module plate comprising:

a flexible PCB (printed circuit board), with a first side and a second side, and having at least one transmission line on first side and a pair of power supply through holes to receive a supply voltage;

a plurality of full-color LED units, disposed on the first side of the flexible PCB, and connected electrically to the transmission line of the flexible PCB and received the supply voltage;

a plurality of protective plates, pasted on the second side of the flexible PCB corresponding to the full-color LED units, wherein each protective plate is slightly border than the full-color LED unit to protect connection between the full-color LED units and the transmission line; and

at least one connecting edge banding, disposed on an edge of one of the flexible PCB, comprising a hook to form a track thereunder;

wherein the hook clips the track of another LED module plate for connection.

2. The LED display structure of claim 1, wherein the second side of the flexible PCB comprising:

at least one input port, electrically connected to the transmission line to receive a controlling signal and transmit to the full-color LED units; and

an output port, electrically connected to the transmission line to receive the controlling signal and transmit to another LED module plate.

3. The LED display structure of claim 1, wherein the full-color LED unit includes a red LEC chip, a green LED chip, a blue LED chip and a driving chip.

4. The LED display structure of claim 3, wherein the full-color PCB further includes a current limiting resistor electrically connected to the driving chip.

5. The LED display structure of claim 1, wherein the hook only slide in the track along a lengthwise direction of the connecting edge banding.

6. The LED display structure of claim 1, wherein the protective plate is made of plastic.

7. The LED display structure of claim 1, further comprises a hanger connected to the connecting edge banding to suspend the LED module plate.

8. The LED display structure of claim 1, wherein the full-color LED units are arranged on the flexible PCB in a matrix, and the transmission line is arranged to-and-fro to connect the full-color LED units.

9. The LED display structure of claim 8, wherein the transmission line divides the flexible PCB into two areas, which defined a positive area and a negative area;

wherein each full-color LED unit is attached across the positive area and the negative area.

10. The LED display structure of claim 9, wherein the pair of the power supply through holes attached in the positive area and the negative area respectively.

11. The LED display structure of claim 10, further comprises a conductive connecting element to connect the power supply through holes of the LED module plates, which located on the same areas of the flexible PCB.

12. A LED (Light Emitting Diode) module plate, comprising:

a flexible PCB (printed circuit board), with a first side and a second side, and having at least one transmission line on first side and a pair of power supply through holes to receive a supply voltage;

a plurality of full-color LED units, disposed on the first side of the flexible PCB in a matrix, and connected electrically to the transmission line of the flexible PCB and received the supply voltage; and

wherein the transmission line is arranged to-and-fro to connect the full-color LED units to divide the flexible PCB into two areas, which defined a positive area and a negative area;

wherein the pair of the power supply through holes attached in the positive area and the negative area respectively and each full-color LED unit is attached across the positive area and the negative area;

a plurality of protective plates, pasted on the second side of the flexible PCB corresponding to the full-color LED units, wherein each protective plate is slightly border than the full-color LED unit to protect connection between the full-color LED units and the trace.

13. The LED module plate of claim 12, wherein the second side of the flexible PCB comprising:

at least one input port, electrically connected to the transmission line to receive a controlling signal and transmit to the full-color LED units; and

an output port, electrically connected to the transmission line to receive the controlling signal and transmit to another LED module plate.

14. The LED module plate of claim 12, wherein the full-color LED unit includes a red LEC chip, a green LED chip, a blue LED chip and a driving chip.

15. The LED module plate of claim 14, wherein the full-color PCB further includes a current limiting resistor electrically connected to the driving chip.

16. The LED module plate of claim 12, wherein the protective plate is made of plastic.