Semiconductor Industry-Wide Optical Dimension Measurement Solution – Sinowon Vision Measuring Machine Covers Wafer, Package, and Jig 3D Precision Inspection

The semiconductor industry comprises many segments – upstream wafer substrates, midstream package components, and downstream equipment jigs – each with widely different workpiece sizes, materials, and inspection parameters. Yet they share common core needs: micron-level precision, non-contact non-destructive inspection, and simultaneous 2D planar + 3D height/flatness measurement. Traditional single-function equipment lacks the adaptability to cover the entire chain. Mixed devices produce incompatible data and complicate line management.

Sinowon, with 20 years of expertise in precision optical measurement, has developed a hybrid line laser Vision Measuring Machine (OMM). With a standard vision module and a customizable line laser scanning module, it delivers an integrated optical dimension measurement solution covering the entire semiconductor chain – unifying 2D contours, full-field flatness, step height, and thickness difference for wafers, ceramic substrates, lead frames, jigs, and BGA balls. It has become the versatile precision inspection platform for semiconductor QC, in-process full inspection, and incoming material verification.

I. Full Coverage of Workpieces and Measurable Parameters

(A) Upstream – Wafers and Substrates
Workpieces: silicon wafers, SiC wafers, alumina ceramic trays, carrier rings, vacuum adsorption spacers.

• 2D vision: wafer outer diameter, notch dimensions, tray through-hole diameter, pitch, slot dimensions, concentricity, edge parallelism.
• 3D laser: tray full-field flatness, spacer overall thickness uniformity, step height, warpage, local depression height.

(B) Midstream – Chip Package Components
Workpieces: BGA packaged chips, lead frames, IGBT modules, ceramic package substrates, molded housings, solder ball arrays.

• 2D vision: lead pitch, solder ball planar diameter, housing length/width, positioning hole dimensions, slot gaps, chamfer, profile tolerance.
• 3D laser: individual ball height, housing step difference, layer stack height, package surface flatness, molded part warpage.

(C) Downstream – Equipment Jigs and Parts
Workpieces: prober positioning discs, vacuum chamber small parts, electrodes, sealing rings, insulation spacers, positioning jig bases.

• 2D vision: disc inner/outer diameters, through-holes, mounting slot dimensions, concentricity, edge perpendicularity.
• 3D topography: jig contact surface full-field flatness, support step height, sealing ring thickness uniformity, electrode protrusion height.

II. Targeted Solutions for Semiconductor Pain Points

1. Wafers and substrates – full-field flatness hard to cover, contact scratches silicon
Silicon wafer surface circuits are easily scratched. Traditional gauges take only a few points, missing edge and center warpage on trays. Line laser scanning completes full-surface non-contact inspection of the entire tray with millions of 3D points, fully reconstructing flatness without physical contact – protecting high-value substrates.

2. Chip packaging – micro solder balls and multi-lead parts are time-consuming and error-prone
A single BGA chip contains dozens to hundreds of balls. Manual measurement is slow, and lead pitch/ball height readings suffer from human error, causing batch quality issues. The fully automatic OMM matches the drawing coordinate system and completes all ball planar dimensions and heights in one run – under 30 seconds per chip – with automatic statistical analysis of height range, eliminating human error.

3. Jigs – large discs and irregular shapes are difficult to fixture, 2D/3D require separate runs
Semiconductor positioning discs and large ceramic trays are regular but large. Standard vision worktables have limited size and cannot measure planar dimensions and flatness simultaneously. Sinowon`s gantry OMM features a large-travel transparent worktable with adjustable supports. Large discs are placed stably without complex fixtures. 2D vision and 3D laser run synchronously – one program outputs all data without two separate machine runs.

4. Industry-wide – dispersed data cannot meet traceability requirements
Different brands produce non-uniform data formats; manual compilation is inefficient and cannot integrate with MES/ERP. Sinowons proprietary software manages 2D and 3D data uniformly, supporting custom report templates with automatic export to Excel, PDF, and CSV – directly integrable with factory digital systems. Every batchs data is permanently stored, meeting stringent traceability and audit standards.

III. Core Hardware Technology Supporting Optical Dimension Measurement

• Natural marble base with high temperature stability, reducing environmental interference. Full closed-loop servo drive, repeat positioning ≤0.3 μm, suitable for ±1~±5 μm tolerances.
• Dual measurement modules – vision unit (telecentric lens + multi-lighting) and external line laser unit; switchable between vision-only, laser-only, and hybrid synchronous modes.
• Multi-mode lighting: coaxial, low-angle ring, contour backlight – four independently adjustable groups for silicon, ceramic, metal, molded, and reflective materials – eliminating edge errors from reflection and shadows.
• Industrial-grade line laser with optimized noise reduction for reflective ceramics and silicon; height stability accuracy 0.5 μm with no data distortion in full-field scanning.
• Worktable with standard mounting holes for custom disc supports, wafer fixtures, and lead frame carriers, reducing loading/unloading time.

IV. Digital Software Features for Semiconductor QC

• CAD import (DXF, IGS, STEP) – automatic feature recognition and one-click program generation – no dedicated programming staff.
• 3D contour map visualization – out-of-tolerance flatness/height areas highlighted in red for intuitive defect location.
• SPC statistical analysis – automatic collection of batch data, calculation of CPK, mean, range, standard deviation – real-time monitoring with early warning of process drift.
• Permission hierarchy (operator, QC engineer, administrator) – non-tamperable data – compliant with semiconductor quality system audits.

V. Industry Application Summary

As semiconductors move toward miniaturization, higher precision, and higher integration, dimensional tolerances are tightening, and single-function equipment can no longer meet production needs. Sinowon`s hybrid line laser OMM leverages integrated optical dimension measurement – one machine covering wafers, packages, and jigs across 2D contours, 3D flatness, and step height. With four core capabilities – non-contact non-destructive measurement, full-field 3D scanning, automated batch operation, and digital traceability – it provides a one-stop solution for all dimension control pain points. The system supports customizable travel, laser precision, and tooling – suitable for laboratory incoming inspection, production full inspection, and outgoing QC. It is the preferred OMM for semiconductor manufacturers upgrading precision quality control.

For specialized semiconductor inspection solutions, visit www.sinowon.com.