Custom-Cut Stretched Bar TFT LCD Module — Technical & Commercial Response

Reference Baseline: DV190FBM-NB0 (19.1" Bar-Type TFT, 1920×360, 500 cd/m²) | HITULCD — Shenzhen Hantu Jiashi Technology Co., Ltd.

Prepared for: Overseas OEM Engineers / Procurement Managers / Project Owners evaluating custom-cut bar-shaped TFT panels for signage, kiosk, retail-shelf, and passenger-information integration.

Note on figures: Where the inquiry did not specify exact target dimensions, tolerance class or duty cycle, the values below follow standard industry reference levels for consumer/industrial-grade cut-panel production. Final numbers are confirmed only after HITULCD reviews your panel drawing, PCB/FPC layout and target outline dimensions.

1. Process Feasibility Assessment

1.1 Cutting Method Recommendation

For a straight-edge stretched-bar conversion (e.g. cutting a standard 19.1"-class mother panel into an elongated 3:1-type strip similar to DV190FBM-NB0), mechanical cutting is generally sufficient. Laser cutting is recommended whenever the target cut line intersects or comes within a few millimeters of the Gate/Source driving lines, COF/TAB bonding area, or TFT array boundary.

1.2 Trace & Circuit Clearance Check

Before confirming feasibility, HITULCD's engineering team requires:

• Original panel outline drawing (DXF/PDF) with Active Area, Gate/Source PCB and COF/FPC bonding zone marked

• Target cut-line dimensions and tolerance requirement

• LVDS/interface pin-out and connector position (to confirm the cut does not remove required signal routing)

• Backlight (WLED) driving board layout, if the backlight assembly is also being trimmed

This allows HITULCD to confirm whether the intended cut line clears the Gate/Source trace area and TFT array without interrupting circuit continuity, and to flag any redesign of the driver board (relocated FPC, shortened Gate/Source lines) that the new outline may require.

1.3 Edge Finish Standard

• Edge flatness: controlled within standard glass-cutting flatness tolerance for the selected method (mechanical or laser)

• Chipping: edge chip depth typically kept under 0.3 mm per edge (mechanical); reduced further with laser cutting

• Micro-crack control: visual/10× magnification inspection standard, no propagating crack extending into the Active Area; laser cutting is used specifically to minimize micro-crack initiation versus mechanical wheel cutting

2. Reliability & Edge-Sealing Assurance

2.1 Sealing Process

After cutting, the exposed glass edge is treated with a secondary sealing process to prevent liquid crystal leakage and moisture ingress:

• UV-curable epoxy edge dispensing (dot or line dispensing along the cut edge) is the standard method

• Silicone/resin secondary edge sealing may be added for projects requiring higher moisture resistance (e.g. outdoor or high-humidity environments)

• Sealing process parameters (dispensing width, cure profile) are adjusted based on final panel thickness (module max thickness reference: ~11.88 mm on the DV190FBM-NB0 baseline) and cut-edge exposure length

2.2 Reliability Test Benchmarks

Cut-and-sealed panels are validated against standard consumer/industrial reliability protocols; representative benchmark levels for a comparable cut-panel program:

For industrial-grade programs, HITULCD applies the more stringent end of these ranges; consumer-grade programs typically use the lower end. Confirm target grade at quotation stage so the applicable test plan (and any reduction from the panel's standard 0–50 °C operating range due to the cut) can be defined.

2.3 Optical Performance After Edge Sealing

• Light leakage: cut-and-sealed edges are inspected in a dark-room test; leakage within the sealed border area is controlled to be non-visible under normal viewing distance

• Mura/color shift: brightness and color-uniformity checks are performed near the cut edge (against the panel's typical 500 cd/m² brightness and 3000:1 contrast baseline) to confirm no visible Mura is introduced by the cutting/sealing process

• A first-article optical inspection report is provided with initial samples so the customer can verify edge performance before approving mass production

3. Cost, Yield & Lead Time

3.1 NRE & Sampling

• NRE (tooling/fixture design, cutting-process setup, first-article validation): cost scales with cut complexity — simple straight-line mechanical cuts are on the lower end; laser cutting near the AA/bonding zone or non-straight profiles increases NRE

• Sample lead time: standard reference is 15–20 working days for an initial batch of 20 pcs, following drawing confirmation

• Exact NRE and sample cost are quoted after review of your outline drawing and tolerance class (see Section 1.2 document list)

3.2 Mass Production Expectations

• Expected yield: for a validated straight-cut program (mechanical cutting, cut line clear of AA/bonding zone), yield typically runs in the 85–95% range at steady-state production; tighter-tolerance laser cuts near sensitive zones generally start lower during ramp-up and improve with process maturity

• Standard lead time (per current site data): 2–3 weeks for standard specs, 4–6 weeks for custom cutting/brightness/bezel projects

• MOQ: standard product MOQ is listed as low as 1 unit for standard specs; custom cutting, brightness or bezel changes adjust MOQ, confirmed at quotation — plan for a mass-production MOQ in the low-hundreds-to-thousand-unit range as a general OEM/ODM reference pending final quote

• Certifications available: CE / FCC / RoHS as standard; UL / CCC / EAC available on request

• Warranty: 12-month product warranty with engineering support

Next Step

To issue a formal feasibility confirmation and NRE/sample quotation, please share:

1. Target outline dimensions and tolerance requirement

2. Original panel drawing (DXF/PDF) with AA, Gate/Source and bonding-zone marked

3. Target application/environment (consumer vs. industrial grade) and operating temperature requirement

4. Estimated mass-production volume (for MOQ and yield-cost alignment)

HITULCD — Shenzhen Hantu Jiashi Technology Co., Ltd. | 12,000+ units/month capacity | ISO9001 / CE / FCC / RoHS / REACH