Integrated Solvent Wiping + In-Situ Plasma Activation System for High-Reliability Display Bonding
The OL-QX17 by Olian Automatic Equipment Co., Ltd. is a semi-automatic, single-station cleaning system engineered specifically for the pre-bond surface preparation of edge-conductive (EC) terminals on rigid LCD panels up to 15.6 inches in diagonal size. It addresses one of the most critical failure points in display module manufacturing—poor ACF (Anisotropic Conductive Film) adhesion—by delivering a dual-stage cleaning process: precision solvent-based mechanical wiping followed immediately by low-temperature atmospheric plasma activation.
Unlike simple cloth-wipe stations or standalone plasma cleaners, the OL-QX17 integrates both technologies into a single, synchronized motion cycle, ensuring that the freshly wiped surface is activated before recontamination can occur—a key factor in achieving consistent, high-yield bonding in automotive, medical, and industrial display applications.
Cleaning Principle & Process Sequence
The machine operates on a linear rightward motion platform that carries the panel under a fixed cleaning head assembly. The full cycle is as follows:
Manual Loading: The operator places the bare (unbonded) LCD panel onto the vacuum-equipped worktable, aligning it using mechanical guides. The terminal edge to be cleaned must face the cleaning head.
Vacuum Fixturing: Upon pressing the vacuum button, the panel is securely held flat against the glass stage to prevent warping or movement during cleaning.
Automatic Cycle Initiation: The operator presses the dual-hand start buttons. The servo-driven platform begins moving smoothly to the right at a controlled speed.
Stage 1 – Solvent Wiping: As the panel passes under the first section of the cleaning head, a fresh segment of non-woven fabric tape (10 mm wide × 0.4 mm thick) is pressed against the terminal area with adjustable force (0.1–0.4 MPa). Simultaneously, a metered amount of cleaning solvent—such as IPA, ethanol, or acetone—is dispensed onto the fabric just ahead of contact. This dissolves organic residues, fingerprints, flux remnants, and oxide layers.
Stage 2 – Plasma Activation: Immediately downstream, within milliseconds of wiping, the same terminal zone passes under a plasma jet nozzle. A high-frequency discharge ionizes ambient air or process gas, generating reactive species (oxygen radicals, ions, UV photons) that:
Remove trace molecular contaminants
Break C–H bonds on surface polymers
Increase surface energy (verified by water contact angle <30°)
Create hydroxyl (–OH) groups for superior ACF wetting
Cycle Completion & Unloading: The platform reaches its end position. The cleaning head retracts. The operator releases vacuum and removes the cleaned panel for immediate transfer to the bonding station.
The entire sequence takes approximately 8–15 seconds, depending on panel length and settings.
Key Components & Specifications
Non-Woven Fabric Roll: Standard dimensions: 10 mm (width) × 50 m (length) × 0.4 mm (thickness) Material: Low-lint, solvent-resistant polyamide or cellulose blend Feed mechanism: Stepper-controlled advance, minimum 2 mm per cycle, user-adjustable via HMI
Plasma System:
Nozzle: Custom-designed spray-type plasma emitter
Electrode: Tungsten-alloy core, rated for 3,000 hours of operation
Discharge Copper Core: High-conductivity copper electrode, also rated 3,000 hours
Power Supply: Integrated high-voltage RF generator (frequency and power not specified in doc; assumed standard 10–30 kHz, 50–200 W range)
Cooling: Passive or forced-air (implied by industrial design)
⚠️ Note: Plasma consumable life (3,000 hours) is indicative and may vary based on duty cycle, ambient humidity, and gas composition.
Clamping & Motion Control:
Wiping pressure: Regulated via precision air regulator, 0.1–0.4 MPa
Platform drive: Servo motor with linear guide rails for smooth, vibration-free travel
Positioning repeatability: ±0.1 mm (inferred from industrial-grade components)
Safety & Diagnostics:
Emergency Stop (EMO): Hardwired safety circuit; cuts servo power and activates mechanical brake
Error Alarms: Triggered for fabric feed failure, plasma ignition fault, or motion obstruction
Status Indication: Three-color tower light (green = ready, yellow = running, red = fault) + audible buzzer
Warning Labels: Applied at pinch points, high-voltage zones, and solvent reservoir areas
1 comment so far
足球贝贝Posted on1:14 上午 - 11 月 24, 2025
又到年底了,真快!