Micro light emitting diode detection device and method

A technology of micro-LEDs and detection devices, applied in diode testing, measuring devices, photometry and other directions, can solve the problems of easy breakage, increase the difficulty of repairing micro-LED displays, etc., and achieve the effect of reducing the difficulty of repairing
CN112649711AActive Publication Date: 2021-04-13CHENGDU VISTAR OPTEOLECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
CHENGDU VISTAR OPTEOLECTRONICS CO LTD
Publication Date
2021-04-13

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Abstract

The invention provides a micro light emitting diode detection device and method, and belongs to the technical field of display. The micro light emitting diode detection device is used for detecting a micro light emitting diode which arranged on an original substrate; the bottom part, far away from the original substrate, of the micro light emitting diode comprises an electrode region and a non-electrode region; and the electrode region is provided with a first contact and a second contact. The detection device comprises a detection substrate and a detection circuit, wherein a bonding layer is arranged on the detection substrate, and the bonding layer is used for being bonded with an original substrate during testing; and the detection circuit comprises an electrode set arranged on the bonding layer, the electrode set comprises a first electrode and a second electrode, the first electrode is used for making contact with a first contact of the micro-light-emitting diode during testing, and the second electrode is used for making contact with a second contact of the micro-light-emitting diode during testing. According to the micro light emitting diode detection device and the method provided by the invention, the repair difficulty of a micro light emitting diode display can be reduced.
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Description

technical field

[0001] The invention relates to the field of display technology, in particular to a detection device and method for a micro light-emitting diode. Background technique

[0002] Micro-light-emitting diode display is a display that integrates a high-density micro-sized LED array on an original substrate to realize image display; it is widely used because of its high quality, thin body, and low energy consumption, and has become a display mainstream in the installation.

[0003] In the manufacturing process of micro-light-emitting diode displays, it is usually necessary to grow multiple micro-light-emitting diodes on the original substrate (such as sapphire substrate) by molecular epitaxy, and these micro-light-emitting diodes can form a Micro-LED array; The lift-off technology peels the micro-LEDs from the original substrate, and uses a transfer head to transfer the micro-LEDs to a predetermined position on the receiving substrate and binds them to the receivin...

Claims

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