28" Stretched Bar TFT LCD Module (P280IVN01.2)

Technical & Sourcing Brief for OEM Engineers, Procurement Managers & Project Leads

1. Product Snapshot

This module is a precision-cut ("stretched") panel derived from a standard-size TFT glass, purpose-built for bar-format applications such as shelf-edge displays, kiosk signage strips, vending/gas-terminal indicators, and instrument-panel bars in industrial equipment.

2. Engineering Feasibility — Cutting Process

Customers evaluating a custom bar-format cut naturally ask how the mother glass is processed and whether functional circuitry is at risk. Our standard workflow addresses this directly:

• Cutting method selection: For straight-edge, rectangular bar cuts we default to mechanical scribe-and-break (wheel cutting) for cost efficiency on standard tolerances (±0.3mm typical). For tighter tolerances, curved edges, or cuts running close to the active array, we switch to ultra-fast laser cutting (UV/picosecond laser), which minimizes heat-affected zone and micro-crack propagation. The recommendation is made per-drawing, not assumed — send us your target dimensions and we'll specify which process applies.

• Gate/Source & TFT array clearance: Every custom-cut proposal starts with a DFM (Design-for-Manufacturability) review against the mother-glass layout to confirm the cut line does not intersect active Gate/Source traces or the TFT array. To run this review we typically need:

• Target cut dimensions with tolerance (±) and datum reference

• Mechanical drawing (DWG/DXF/STEP) showing mounting holes, bezel, or housing interface

• Preferred display orientation and viewing direction

• Any keep-out zones required by your enclosure design

• Edge quality standard: Post-cut edges are inspected against an internal standard for edge chipping, micro-crack length, and flatness (typically controlled within tens of microns); panels outside tolerance are rejected before assembly.

3. Reliability & Edge Sealing

Cutting a panel from its original size creates a new, unsealed glass edge — this is the question every serious industrial buyer asks first.

• Sealing process: Cut edges receive a secondary sealing process (UV-cure dispensing / edge sealant application) to restore moisture and liquid-crystal leakage protection at the new edge. This is applied and cured under controlled conditions before final module assembly, not as an afterthought.

• Reliability testing: Cut-and-sealed modules are qualified against the same environmental battery as our standard product line, scaled to consumer-grade or industrial-grade requirements depending on your application:

• Double-85 (85°C / 85% RH) high-temp/high-humidity soak

• High/low temperature cycling (thermal shock)

• Mechanical drop / structural shock testing We can share test reports and pass/fail benchmark data from comparable cut-panel programs on request — this is normally provided during the DFM review stage, before you commit to tooling.

• Optical performance at the sealed edge: Known failure modes for cut panels are light leakage and Mura (color shift / non-uniformity) near the seal line. Our process controls dispensing width and cure profile specifically to keep the active viewing area free of these effects; edge inspection is part of standard outgoing QC, not a sampling-only check.

4. Cost, Yield & Program Timeline

• NRE & sampling: Custom cutting programs carry a one-time NRE (tooling/process qualification) fee, scoped once we've confirmed the cut is feasible via DFM review. First-article samples (typical batch: 20 pcs) are generally available within 2–4 weeks of drawing confirmation — final timing depends on whether laser or mechanical cutting is used.

• Mass production yield: Yield on qualified cut programs is generally comparable to standard product lines once the process is locked in from the sample run; exact figures depend on cut geometry (straight vs. contoured) and proximity to the active array, and we'll give you a program-specific number after DFM sign-off rather than a generic estimate.

• MOQ & production capacity: Standard-spec MOQ is as low as 1 unit; custom-cut, brightness, or bezel configurations carry an adjusted MOQ confirmed at quotation. Production capacity supports prototype, small-batch, and volume programs at 12,000+ units/month.

5. Commercial Terms

6. Recommended Next Step for Your Team

To move from inquiry to a firm DFM feasibility answer, please send:

1. Target cut dimensions + tolerance

2. Mechanical drawing (DWG/DXF/STEP) or enclosure interface reference

3. Application environment (temp range, IP requirement, indoor/outdoor)

4. Expected annual volume / program stage (prototype vs. production)

Our engineering team will return a cutting-method recommendation, sealing spec, and indicative NRE/sample lead time within your DFM review.

Contact: chenhua@hitulcd.com | +86 186 8232 8732 | Send Inquiry