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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

Active Publication Date: 2021-04-13
CHENGDU VISTAR OPTEOLECTRONICS CO LTD
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Problems solved by technology

[0004] However, micro-LEDs are prone to damage when they are peeled off from the original substrate. Therefore, the brightness of the micro-light-emitting diode display needs to be tested after the production is completed. The process of light-emitting diode display has been completed, which increases the difficulty of repairing micro-light-emitting diode displays

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  • Micro light emitting diode detection device and method
  • Micro light emitting diode detection device and method
  • Micro light emitting diode detection device and method

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Embodiment Construction

[0039] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0040] Such as figure 1 As shown, in the prior art, the original substrate 10 can be selected from a sapphire substrate, a silicon substrate, a silicon carbide substrate or a gallium nitride substrate, and a micro light emitting diode 20 is arranged on the original substrate 10, or, a plurality of micro light emitting diodes 20 are arranged on the o...

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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.

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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Application Information

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IPC IPC(8): G01R31/26G01M11/00G01J1/00
CPCG01R31/2635G01M11/00G01J1/00G01R31/26G01R31/2844G01R31/2843G01R31/2837G01R31/2825
Inventor 夏继业
Owner CHENGDU VISTAR OPTEOLECTRONICS CO LTD
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