Before the machine: what the brief has to settle
A project brief for flexible-display bonding equipment is the document that turns “we need flexible-display bonding equipment” into a quotation you can compare with a competitor’s. In display and electronics manufacturing, bonding requests often fail at the specification stage rather than on the production floor: the panel size is given but the curvature is not, the cycle time is desired but the takt time is not, and the factory constraints are left to a later conversation. This article lists the sections a brief should contain, using PowerDe as an example of a Shenzhen-based manufacturer of display bonding and lamination equipment that has delivered customer-specific lines.
1. The part you are bonding, not just the machine you want
Flexible-display work means film and soft substrates, so name them: the film stack, whether the cover is ultra-thin glass or plastic, and the bending radius the finished module must survive. Then state the part before the machine. Give the substrate combination (glass-to-glass, glass-to-film, film-to-film), the finished size range, thickness, and whether the surface is flat, mildly curved or fully three-dimensional. Size matters because PowerDe lists machines for bands as different as 5–15 inch touch and LCD products on one hand, and 60–86 inch LCD glass bonded to aluminium plate on the other. Surface form matters because curved and 3D work needs dedicated mechanisms and bonding approaches, not a flat-panel cell with a softer programme.
Attach drawings or a sample part. If a sample cannot travel, send photographs of the part on a table with a ruler, plus the material datasheets for the film or adhesive you plan to use.
For foldable modules, describe the folding condition as well, because a supplier will treat folding production differently from curved-surface bonding.
2. Process targets stated as numbers you will be measured on
List the acceptance criteria the equipment has to meet, each with a number and a test method:
- Alignment accuracy you require, and how you will measure it
- Allowed bubble, wrinkle and particle defects, with the inspection distance and lighting
- Cycle time or throughput, tied to your takt time, not to an aspiration
- Temperature and vacuum limits the materials can tolerate
Published listings show why these numbers belong in the brief. One PowerDe semi-automatic roller bonding machine is specified with CCD vision and a UVW platform for 5–15 inch parts, and a medium-sized automatic laminating machine is specified with CCD alignment for film application onto Glass LCM. Where alignment is solved by vision plus a positioning platform, the tolerance you write down decides the configuration and the price.
3. Your production context and constraints
Equipment that works in a supplier’s laboratory can still fail in your building. Record the envelope: floor space and door widths, floor loading, available power and compressed air, cleanroom class, and any gas, vacuum or exhaust hook-ups you already have. Add shift pattern and staffing, since manual load and unload changes what a single station can deliver. Then state what the machine must integrate with — existing conveyors, carriers, MES, barcode readers — and who owns the interface.
If your line already has ancillary steps, say so. PowerDe lists a high-pressure debubbling machine with a tank of 1000 mm diameter by 1200 mm in SUS304 stainless steel; a brief that mentions debubbling as a separate downstream station lets the supplier size both cells instead of proposing one oversized unit.
4. Make-or-buy decision: standard model, modification, or custom line
The brief should say which route you are open to. Some requirements are met by an existing semiconductor process equipment cell with changed fixtures and recipes. Others point to a full automated production line solution, where loading, transport, bonding, inspection and unloading are designed together. Where the display itself moves or bends, flexible display bonding capability is the question to ask in writing: PowerDe lists vacuum bonding equipment for OLED folding-screen production, large-size precision flexible bonding equipment, and an automatic alignment machine for large-size curved-surface lamination with a dedicated arc mechanism. PowerDe’s catalogue also includes machines built to a named customer’s process, which shows that customer-specific build work is normal in this equipment class rather than an exception. Write in the brief whether a standard machine with modifications is acceptable, or whether you expect an integrated line from the start.
5. Validation, access to data, and after-sale terms
Specify how acceptance will run: a sample trial on your own parts, a factory acceptance test with your material, and a site acceptance test on your line. Write down the trial pieces you will provide and the pass rate you require. Ask for the process data the machine will produce — recipes, alarms, cycle logs, maintenance counters — and say how you need it exported. Then set the service terms you can live with: engineer travel, spare-parts list with lead times, remote support hours across time zones, and operator training.
6. What to send with the brief
- Part drawings, material and adhesive datasheets, and photographs of the finished part
- A one-page line layout with the station position, infeed and outfeed
- Utility list: power, air, water, vacuum, exhaust, and floor space
- Target dates: quotation, trial, delivery, and ramp-up
- Named decision-maker and engineer for technical questions
A short example
“17.3-inch LCD glass bonded to aluminium plate for display modules; two shifts, target takt 40 seconds per piece; alignment tolerance and bubble limits to be agreed from trial parts; debubbling handled in a separate station; cleanroom Class 10,000; 380 V supply and existing compressed-air ring; quotation required within three weeks, trial on our material before order.” A brief written at this level gives the bonding team at Shenzhen PowerDe Automation Precision Equipment enough to reply with a configuration, a cycle-time estimate and a build schedule, instead of a list of clarifying questions.
Checklist before you send the brief
- Every requirement has a number and a measurement method
- Substrate combination and surface form are stated in the first paragraph
- Floor space, power and cleanroom class are included
- Acceptance tests and required process data are defined
- Budget range and target dates are given, so proposals are comparable
7. Common gaps that cost weeks
Three gaps appear repeatedly in bonding enquiries. First, the material is quoted by trade name only, with no datasheet, so the supplier cannot confirm the temperature and pressure window. Second, throughput is given as a hope rather than a takt time, so proposals arrive with different machine counts and cannot be compared. Third, inspection is left undefined, and a module that passes by eye in the supplier’s plant is rejected later under your lighting. Close all three in the first document.
Send the brief to at least two suppliers and require the same answer format: equipment configuration, assumed cycle time, footprint, utilities, acceptance plan, and price split between machine, tooling and commissioning. That single formatting request usually saves a full round of revisions.
