Mass-production LED test device for mass production

• US 20060226848A1
• Filed: 03/30/2005
• Published: 10/12/2006
• Est. Priority Date: 03/30/2005
• Status: Abandoned Application

• Current Assignee: YoungTek Electronics Corp.
• Original Assignee: YoungTek Electronics Corp.
• Inventors: Chen, Kuei-Pao, Lai, Tsan-Hsiung
• Application Number:
  US11/092,878
• Publication Number:
  US 20060226848A1
• Time in Patent Office: Days
• US Class Current: 324/501
• CPC Class Codes: G01R 31/013 Testing passive components testing relays G01R31/3278; testing electrical windings, e.g. inductors G01R31/72
• CPC Class Codes: G01R 31/2635 Testing light-emitting diodes, laser diodes or photodiodes

Abstract

A mass-production LED test device includes a control module, at least one integrating sphere module electrically connected to the control module and at least one test board corresponding to at the least one integrating sphere module. The integrating sphere module has an electrical output entrance, an optical output entrance and an optical input entrance. The test board has a plurality of pads to which a plurality of LEDs are electrically connected, respectively, for supplying required current of each LED. The optical input entrance of the integrating sphere module defines a predetermined measure for containing a predetermine amount of the LEDs at one time. The integrating sphere module has a plurality of probes corresponding to the predetermine amount of the LEDs, thereby to test the electrical character of each LED by a manner of one by one.

Claims

1. A mass-production LED test device comprising:

a control module including a central processing unit with a programmable logic controller, and a signal interface unit electrically connected to the central processing unit;

at least one integrating sphere module electrically connected to the signal interface unit of the control module, and the integrating sphere module having an electrical output entrance, an optical output entrance and an optical input entrance; and

at least one test board corresponding to the integrating sphere module, and the test board having a plurality of pads to which a plurality of LEDs are electrically connected, respectively, for supplying required input and output of current of each LED;

wherein the optical input entrance of the integrating sphere module defines a predetermined measure for containing a predetermine amount of the LEDs at one time;

wherein the integrating sphere module has a plurality of probes corresponding to the predetermine amount of the LEDs, thereby to test the electrical character of each LED by a manner of one by one.

2. The mass-production LED test device as claimed in claim 1, wherein the signal interface unit includes a RS 485 signal interface, and the integrating sphere module is electrically connected to the control module via the RS 485 signal interface.

3. The mass-production LED test device as claimed in claim 1, wherein the test board is electrically connected to at least one steady current source for providing fixed current to each LED.

4. The mass-production LED test device as claimed in claim 1, wherein the test board is electrically connected to a predetermine amount of steady current sources for providing fixed current to the corresponding predetermine amount of the LEDs.

5. The mass-production LED test device as claimed in claim 1, wherein the control module, which electrically connects the test board, further includes a software module for controlling each LED on the test board in on-state via the software module in turn.

6. The mass-production LED test device as claimed in claim 5, wherein the predetermined amount of the LEDs contained under the integrating sphere module are controlled in on-state one by one, when the LEDs are tested with their optical character.

7. The mass-production LED test device as claimed in claim 5, wherein the software module includes a plurality of automatic execution and classification conditions.

8. The mass-production LED test device as claimed in claim 1, wherein the control module further has at least one manual operation unit for setting some execution and classification conditions in a manual manner.

9. The mass-production LED test device as claimed in claim 1, wherein the control module includes a complete-optical region photoelectric test machine, YTSD02.

10. The mass-production LED test device as claimed in claim 1, further includes a motor unit electrically connected to the control module and the integrating sphere module, so as to drive the integrating sphere module for horizontal and vertical moves.

11. The mass-production LED test device as claimed in claim 10, wherein the motor unit includes a serve motor or a stepper motor.