Display panel bonding device and correction apparatus

Patent metadata

Field	Value
Publication number	US-12396147-B2
Application number	US-202217713431-A
Country	US
Kind code	B2
Filing date	Apr 5, 2022
Priority date	Apr 28, 2020
Publication date	Aug 19, 2025
Grant date	Aug 19, 2025

Abstract

A display panel bonding device and a correction apparatus and method thereof. The correction apparatus includes: a fixture assembly including a first fixture and a second fixture coordinating with each other. The first fixture is provided with a first alignment mark, the second fixture is provided with a second alignment mark, and alignment between the first fixture and the second fixture is achieved via the first alignment mark and the second alignment mark; and an image acquisition assembly configured to acquire a first image of the first alignment mark of the first fixture and a second image of the second alignment mark of the second fixture respectively. The first image and the second image are used for acquiring an alignment parameter of the first alignment mark and the second alignment mark to correct alignment between the first fixture and the second fixture.

First claim

What is claimed is:

1. A correction apparatus comprising:
a fixture assembly comprising a first fixture and a second fixture coordinating with each other, wherein the first fixture is provided with a first alignment mark, the second fixture is provided with a second alignment mark, and alignment between the first fixture and the second fixture is achieved via the first alignment mark and the second alignment mark; and
an image acquisition assembly comprising a first image acquisition unit configured to acquire a first image of the first alignment mark of the first fixture and a second image acquisition unit configured to acquire second image of the second alignment mark of the second fixture, wherein a first image acquisition unit and the second image acquisition unit are aligned on a straight line between the first fixture and the second fixture, and the first image and the second image are used for acquiring an alignment parameter of the first alignment mark and the second alignment mark to correct the alignment between the first fixture and the second fixture.

2. The correction apparatus according to claim 1 , wherein the first fixture comprises a first plane, on which the first alignment mark is provided, the second fixture comprises a second plane, on which the second alignment mark is provided, and the first plane and the second plane are respectively axisymmetric or centrosymmetric figures.

3. The correction apparatus according to claim 1 , further comprising:
a first displacement platform configured to assemble and drive at least one of the first fixture or the second fixture to move to achieve the alignment between the first fixture and the second fixture.

4. The correction apparatus according to claim 3 , further comprising:
a processing module, configured to process the first image and the second image to acquire the alignment parameter of the first alignment mark and the second alignment mark, and adjust the first displacement platform according to the alignment parameter so as to align the first alignment mark and the second alignment mark.

5. The correction apparatus according to claim 4 , wherein the first displacement platform has a displacement accuracy error equal to or less than 3 μm.

6. The correction apparatus according to claim 1 , wherein a first shooting direction of the first image acquisition unit faces the first alignment mark and a second shooting direction of the second image acquisition unit faces the second alignment mark, and the first shooting direction is opposite to the second shooting direction.

7. The correction apparatus according to claim 6 , further comprising:
a second displacement platform, located between the first image acquisition unit and the second image acquisition unit and configured to assemble and drive at least one of the first image acquisition unit or the second acquisition unit to move to achieve alignment between the first image acquisition unit and the second acquisition unit and alignment between the first image acquisition unit and the second acquisition unit and the fixture assembly.

8. The correction apparatus according to claim 7 , wherein the second displacement platform has a displacement accuracy error equal to or less than 5 μm.

9. The correction apparatus according to claim 3 , further comprising:
a bonding member base adapted to replace the first fixture installed on the first displacement platform and accommodate a curved cover glass; and
a display module base adapted to replace the second fixture base installed on the first displacement platform and accommodate a display module.

10. The correction apparatus according to claim 3 , wherein the first displacement platform is further configured to:
drive the first fixture moving within a first plane; and
drive the second fixture moving within a second plane, wherein the first plane is set parallel to the second plane.

11. The correction apparatus according to claim 6 , wherein the second displacement platform further comprises:
a first fixing arm and a second fixing arm, the first fixing arm and the second fixing arm are symmetrically set about the second platform, the first image acquisition unit installed on the first fixing arm, and the second image acquisition unit installed on the second fixing arm, and the first image acquisition unit and the second image acquisition are arranged up and down.

12. The correction apparatus according to claim 1 , wherein the first alignment mark and the second alignment mark are figures, a center point of the first alignment mark coincides with a center point of the first plane, and a center point of the second alignment mark coincides with a center point of the second plane.

13. The correction apparatus according to claim 1 , wherein the first alignment mark has the same shape as the second alignment mark.

14. The correction apparatus according to claim 1 , wherein the first alignment mark comprises at least two crossed first grooves and the second alignment mark comprises at least two crossed second grooves.

Assignees

• Kunshan Govisionox Optoelectronics Co Ltd

Inventors

• Zhang Qi
• Yang Shuo
• Yang Bin
• Yuan Yahong
• Gu Chunxiao
• Zhu Chaoyue

Classifications

• Y10T29/49131

  by utilizing optical sighting device · CPC title

• G06F1/181

  Enclosures (for portable computers G06F1/1613) · CPC title

• H05K13/0812

  the monitoring devices being integrated in the mounting machine, e.g. for monitoring components, leads, component placement · CPC title

• G02B27/32

  Fiducial marks and measuring scales within the optical system · CPC title

• G12B5/00

  Adjusting position or attitude, e.g. level, of instruments or other apparatus, or of parts thereof (levels per se G01C9/00); Compensating for the effects of tilting or acceleration, e.g. for optical apparatus · CPC title