Optoelectronics

Seica LED sensor option for the pilot line launched

10th June 2021
Alex Lynn

Following the boost to energy saving and today’s improved design technology, the LED type components really replaced almost any other light source. LED modules can be found in any market sector, starting from automotive, bringing production levels of this type of boards to unconceivable amounts.

Need for accurate testing

Typically we talk about simple boards from a circuitry point of view, but requiring an accurate testing. Approximations and compromises can be made, however, the only way to ensure the quality of the product is the functional testing, along with the characterisation of each LED through dedicated sensors. For productions of consistent codes, assembled in large volumes, it is possible to implement dedicated but definitely expensive test fixtures.

In all the other instances, the flying probe platform comes in, providing to date a test speed which meets the pace of the production output.

Implementation features

  • Need to test Led board panels up to 1500 mm length.
  • The system can be managed both in-line or as a stand-alone test station.
  • A flying prober with ‘LED SENSOR’ option can be perfectly integrated into a high-volume automatic production line.
  • Configuration with four electrical probes and two FEASA sensors.
  • SPLIT TEST available for boards exceeding 600 mm length.
  • External automatic conveyors to support the D.U.T. (both incoming and outgoing).
  • Timely verification of positioning, colour, saturation and intensity parameters for each LED.
  • Power pads required on the whole board.
  • Power supplied via flying probes.

Benefits:

  • Effective testing of the board and characterisation of the main components.
  • Possibility of a stable and reliable inspection downstream of the production.
  • Fast and reliable programming, possibility of ICT test on the circuitry.
  • The SPLIT TEST function allows to test the panel by steps, having it conveyed consistently with the test execution.
  • Streamlined handling of relevant size panels.
  • Improved quality of the finished product.
  • Consistent quality control of the incoming components.

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