Inspecting tool for inspecting micro LED array panel

Patent metadata

Field	Value
Publication number	US-12546649-B2
Application number	US-202118719842-A
Country	US
Kind code	B2
Filing date	Dec 16, 2021
Priority date	Dec 16, 2021
Publication date	Feb 10, 2026
Grant date	Feb 10, 2026

Abstract

An inspecting tool for inspecting a micro LED array panel ( 00 ) comprises: an optical collector group ( 01 ) configured to collect light emitted from a micro LED array included in the micro LED array panel ( 00 ): an image detector ( 02 ) connected with the optical collector group ( 01 ) to receive the light collected by the optical collector group ( 01 ) and to capture an image of the micro LED array: and. a light measuring device ( 03 ) electrically connected with the optical collector group ( 01 ) to receive the light collected by the optical collector group ( 01 ) and to measure the light emitted from one or more portions of the micro LED array. The optical collector group ( 01 ) comprises a first optical collector ( 101 ) connected with the image detector ( 02 ) and a second optical collector ( 102 ) electrically connected with the light measuring device ( 03 ); the first optical collector ( 101 ) and the second optical collector ( 102 ) are configured on a fixture element ( 104 ); and, the fixture element ( 104 ) is rotatable at any direction. This inspecting tool can increase the image accuracy.

First claim

The invention claimed is:

1 . An inspecting tool for inspecting a micro light emitting diode (LED) array panel, comprising:
an optical collector group configured to collect light emitted from a micro LED array included in the micro LED array panel; an image detector connected with the optical collector group to receive the light collected by the optical collector group, and configured to capture an image of the micro LED array; and a light measuring device electrically connected with the optical collector group to receive the light collected by the optical collector group, and configured to measure the light emitted from one or more portions of the micro LED array; wherein, the optical collector group is disposed above the micro LED array panel for collecting the light emitted from any position of the micro LED array; the optical collector group comprises a first optical collector and a second optical collector;
wherein, the first optical collector is connected with the image detector; and, the second optical collector is electrically connected with the light measuring device; wherein, the first optical collector and the second optical collector is configured on a fixture element; and, the fixture element is rotatable at any direction.

2 . The inspecting tool for inspecting the micro LED array panel according to claim 1 , wherein, the first optical collector is disposed above and vertically aligned with the micro LED array via rotating the fixture element; and, the first optical collector is configured to direct the light emitted from the micro LED array to the image detector.

3 . The inspecting tool for inspecting the micro LED array panel according to claim 2 , wherein, the second optical collector is disposed above and opposite to the micro LED array via rotating the fixture element; and, the second optical collector is configured to collect the light emitted from one or more portions of the micro LED array.

4 . The inspecting tool for inspecting the micro LED array panel according to claim 3 , wherein, a detecting area of the first optical collector is not less than a light emitting area of the micro LED array.

5 . The inspecting tool for inspecting the micro LED array panel according to claim 4 , wherein, a detecting area of the second optical collector is larger than the light emitting area of the micro LED array.

6 . The inspecting tool for inspecting the micro LED array panel according to claim 4 , wherein, the detecting area of the second optical collector is less than or equal to the light emitting area of the micro LED array.

7 . An inspecting system for inspecting the micro LED array panel at least comprised an inspecting tool according to claim 1 .

8 . The inspecting system according to claim 7 , wherein, the inspecting system further comprises a sample stage, for supporting the micro LED array panel.

Assignees

• Jade Bird Display Shanghai Ltd

Inventors

• Xu Chenchao
• Yue Yang
• Li Qiming

Classifications

• G01J1/0403

  Mechanical elements; Supports for optical elements; Scanning arrangements · CPC title

• G01J2001/4252

  for testing LED's · CPC title

• G01J1/04

  Optical or mechanical part {supplementary adjustable parts} · CPC title

• G01J1/0228

  Control of working procedures; Failure detection; Spectral bandwidth calculation · CPC title

• G01J1/0422 Primary

  using light concentrators, collectors or condensers · CPC title