METHOD OF TESTING PROPERTY OF LED

摘要

PURPOSE: A property test method of a light emitting diode (LED) is provided to reduce a cycle time for a test and to test lots of LEDs in the same time by not purchasing multiple expensive devices. CONSTITUTION: A tray having an LED which is production completed is successively loaded in a loading unit (S10). A transfer part separates one tray located on the uppermost portion or lowest portion and transfers it to an optical property test part in the state the tray having the LED under the test is loaded in the loading part. A lens radiates and an optical property test is executed in the state that an optical parabolic lens attached to the lower side of a test module is connected to the LED in the tray after the test module descends (S30). The test module ascends to a top dead point and the tray is transferred to an electrical characteristic test part by the transfer part and an electrical characteristic test is executed during a predetermined time (S40,S50). [Reference numerals] (AA) Successively loading a tray having LED in a loading unit; (BB) Separating one tray from a loading part and transferring it to an optical property test part; (S30) Executing optical property tests of LED in the tray in order after the test module descends; (S30-1,S50-1) Preventing the deformation of the tray by mounting the tray in a tray deformation correcting member and clamping it with a clamper; (S40) Tray having LED for which the optical property tests are completed is transferred to an electrical characteristic test part by the transfer part; (S50) Electrical characteristic test part executes an electrical characteristic test for the electrical characteristic of the LED in the tray; (S60) Unloading the tray having the LED for which the electrical characteristic test is completed