Ning AN, Hai BI, Yi LI, Cheng XU. High precision correction and positioning of the substrate for display ink printing[J]. Optics and Precision Engineering, 2024, 32(24): 3580
- Optics and Precision Engineering
- Vol. 32, Issue 24, 3580 (2024)
Fig. 1. System hardware module layout top view
Fig. 2. Workflow of vision system
Fig. 3. Calibration board array pattern
Fig. 4. Calculate the camera mounting angle
Fig. 5. Multi-camera installation position calibration structure
Fig. 6. Multi-camera installation position calibration principle calculation
Fig. 7. Flow chart of substrate correction and positioning algorithm
Fig. 8. Substrate plane coordinate system
Fig. 9. E-paper display ink printing filling device
Fig. 10. Different point light sources illuminate the Mark
Fig. 11. Camera is mounted for deflection angle calibration
Fig. 12. Algorithm extracts the center coordinates of Mark
Fig. 13. Angle deviation of the rotary table rotating at 20"
Fig. 14. Ink drop print pixel pit test
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Table 1. Multi-camera installation position deviation
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Table 2. Angle deviation of the rotary table rotating at 200"
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Table 3. Ink drop printing position deviation
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Table 4. Ink drop printing repeat localization deviation
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