Custom-Cut Stretched Bar LCD Modules — Technical Capability Overview

For Engineering, Procurement & Project Teams Evaluating Non-Standard Panel Sizes

Reference product: 28.6" Custom LCD Module for Smart Retail Shelves (Model: G286HAN01.0)Manufacturer: HITULCD (Shenzhen Hantu Jiashi Technology Co., Ltd.)

1. About This Product Line

The G286HAN01.0 is a 28.6" ultra-wide stretched bar LCD module, produced by precision-cutting a standard 32" a-Si TFT-LCD mother panel down to a 3.56:1 aspect ratio (1920×540). It is representative of HITULCD's broader custom panel-cutting program, which allows OEMs, system integrators, and shelf/signage manufacturers to source bar-format displays in sizes that do not exist as standard panel SKUs — without commissioning a full custom cell from the glass fab.

This document answers the technical due-diligence questions we most commonly receive from overseas engineering and procurement teams before they commit to a cutting project.

2. Cutting Process & Design Feasibility

Cutting methodFor most stretched-bar conversions (including this 28.6" module), we recommend precision mechanical wheel scribing + controlled breaking, which is well-proven for straight-line cuts on standard a-Si TFT glass and offers the best cost-to-quality ratio for volume programs. For projects requiring tighter dimensional tolerance, cuts close to active circuitry, or irregular/non-linear cut lines, we switch to ultrafast laser cutting (picosecond/femtosecond class), which produces a smaller heat-affected zone and lower micro-crack risk at a higher unit cost. Your project engineer will confirm which method fits your tolerance and volume requirements at quotation stage.

Trace and circuit clearanceEvery cutting line is planned against the donor panel's Gate/Source driver layout and active TFT array before tooling begins, so the cut plane does not intersect functional circuitry. Where a target dimension would encroach on the Gate/Source trace area, we will flag this during feasibility review and propose the nearest viable dimension, or recommend an alternative source panel with a more suitable native layout.

What we need from you to confirm feasibilityTo run a cutting feasibility assessment, please provide:

• Target outline dimensions and required tolerance (±mm)

• Preferred active area / viewing window, if constrained by your enclosure

• Mounting or bezel constraints (mechanical drawing, if available)

• Expected order volume and target unit cost range

• Application environment (indoor/outdoor, temperature range, vibration/shock exposure)

We will return a cutting feasibility report indicating: recommended cutting method, source panel selection, expected active area after edge trim, and preliminary NRE/sample lead time.

Edge quality standardPost-cut edges are inspected against an internal edge-flatness and micro-crack acceptance standard prior to sealing. Edge chipping beyond spec, chatter marks, or visible sub-surface cracking are rejected at this stage — before any sealing or lamination work is performed, to avoid carrying a defective edge into later assembly.

3. Reliability & Edge Sealing

Sealing processEvery cut edge is treated with a secondary edge-sealing process (UV-cure resin dispensing) applied along the exposed glass edge and polarizer boundary. This restores a moisture and liquid-crystal containment barrier at the cut line, which is otherwise the most vulnerable point on a stretched panel. Dispensing parameters (bead width, cure profile) are adjusted per panel thickness and cut geometry.

Reliability testingCut-and-sealed modules are validated using our standard qualification battery — testing tier (consumer-grade vs. industrial-grade) is agreed with the customer based on end-use environment:

• Temperature/Humidity Cycling — double 85 (85°C / 85% RH) high-temp/high-humidity soak

• Thermal Shock — high/low temperature cycling

• Structural Drop Test — per packaging and mounting configuration

Test reports and benchmark data from prior cutting programs of comparable size/aspect ratio are available for review under NDA — please specify your target environment (operating temperature range, expected duty cycle, indoor/outdoor) so we can share the most relevant comparison data.

Optical performance at the seal lineA correctly executed cut-and-seal process should show no light leakage or color shift (Mura) at the edge under normal viewing conditions. This is verified visually and, for tighter optical specs, via luminance mapping across the edge zone during incoming quality control (IQC) and outgoing quality control (OQC). Any edge-zone Mura identified during trial production is addressed by adjusting seal dispensing parameters before the design is released to volume.

4. Cost, Yield & Lead Time

NRE and samplingCutting-tool setup and process qualification for a new custom dimension typically carries a one-time NRE charge, quoted per project based on cut complexity (straight cut vs. multi-edge/laser), panel source, and tolerance requirements. A first sample run (e.g., 20 pcs) is standard practice to validate dimensional accuracy, edge integrity, and optical performance before committing to tooling for volume. Exact NRE and sample lead time are confirmed at the feasibility/quotation stage once your target drawing is reviewed — as a general guide, mechanical-cut projects sample faster than laser-cut projects due to simpler process setup.

Expected yield at volumeYield in mass production depends on cut geometry, tolerance tightness, and proximity to active circuitry, and is confirmed after the trial run based on real process data — we do not quote a blanket number before seeing your specific dimensions. Simpler straight-line cuts on non-critical areas run at higher, more predictable yields than cuts near the Gate/Source boundary or laser cuts with tight tolerance.

MOQStandard-spec modules carry an MOQ as low as 1 unit; a custom cutting program (new dimension, tooling, or sealing profile) has a separate MOQ confirmed at quotation, since it needs to justify the tooling and qualification investment. Standard lead time is 2–3 weeks; custom-cut projects typically run 4–6 weeks including feasibility, sampling and sign-off.

5. Supplier Snapshot

Next Step

To start a formal feasibility review for your project, please send:

1. Target dimensions and tolerance (drawing if available)

2. Application and environmental requirements

3. Estimated annual volume

Our engineering team will return a written cutting feasibility assessment, recommended process route, and sample quotation — typically within 2–3 business days.

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