Application Engineering

How to Choose a TFT LCD for Medical Devices

2026-09-29 · 7 min read · DISEA Engineering

Medical displays are judged on things consumer screens are not: consistent greyscale, wide viewing angle for a team around a bed, a surface that survives hospital disinfectants, immunity to the RF environment of an operating theatre, and a guaranteed supply for the ten-year life of the device. Here is the checklist we work through with medical OEMs.

Image quality: greyscale before colour

Diagnostic-adjacent displays (patient monitors, infusion pumps, ventilators, analysers) live or die on legibility of numbers and trends, not on colour saturation. Ask for:

Cleanability and ingress protection

The front surface is touched constantly and wiped with aggressive disinfectants. A chemically strengthened cover glass bonded to the panel gives a flat, sealed surface that can be wiped without liquid ingress, and survives alcohol and chlorine based cleaners that would craze a plastic film. Bonded designs also remove the internal air gap where condensation forms when a cold device enters a humid room.

EMC and safety context

Medical equipment must meet IEC 60601-1-2. A display is not only a potential emitter — it is also a large aperture that can couple RF into sensitive analog front ends. Specify:

Lifetime, obsolescence and PCN

A device with a ten-year service life cannot absorb a silent panel change in year three. Before qualifying a module, get in writing:

Our medical programme customers run under ISO 13485:2016 and receive PCN notices plus a documented drop-in replacement path.

Sizing and integration

Typical medical formats: 2.4–5″ for portable and handheld instruments, 7–10.1″ for bedside monitors and infusion pumps, 12.1–21.5″ for carts, analysers and surgical displays. Where the mainboard sits away from the panel, LVDS with a shielded cable is the safe choice; where everything is on one board, MIPI DSI keeps the stack-up simple.

Modules commonly used in medical equipment

IPS modules in the 7–15.6″ range commonly used for bedside monitors, pumps and analysers.
Part No.SizeResolutionTypeBrightnessInterfaceTouchOp. temp.
DS-T101BFHA-0110.1"1920x1200IPS1200 cd/m²LVDS 2CHANNEL 8BIT 45PIN TBD.—-20-70
DS-T070BAHA-027.0"1024x600IPS1000 cd/m²8/6 bit LVDS—-20-70
DS-T070BAHA-047.0"1024x600IPS1000 cd/m²24BIT RGB—-20-70
DS-T070SWHWA-017.0"800x480IPS1000 cd/m²LVDS 6/8bit 20PIN—-30-85
DS-T101HIEWA-0110.1"1280x800IPS1000 cd/m²LVDS 6/8bit 40PIN—-30-85
DS-T101HIEWA-0310.1"1280x800IPS1000 cd/m²LVDS 6/8bit 40PIN—-30-80
DS-T104QXHA-0310.4"1024x768IPS1000 cd/m²LVDS 6/8bit 30PIN TBD.—-20-70
DS-T121BIHA-0112.1"1280x800IPS1000 cd/m²LVDS 8bit 40PIN TBD.—-20-70

Frequently asked questions

Do you manufacture under ISO 13485?

Yes — ISO 13485:2016, alongside ISO 9001:2015 (TÜV), IATF 16949:2016 for automotive and ISO 14001:2015. Certificates and validity dates are published on our certifications page.

Can you guarantee long-term supply for a medical device?

Yes. We support long-term supply agreements, last-time-buy windows and formal PCN notice, and we document pin-compatible migration paths when a panel generation changes.

What brightness do medical displays need?

Indoor ward and OR use is typically 250–500 cd/m². Surgical displays viewed under intense theatre lighting, or equipment used on brightly lit carts near windows, benefit from 700–1,000 cd/m² with AR treatment.

Do you provide optical bonding and custom cover glass?

Yes — OCA/OCR full lamination, custom cover glass with AR/AG/AF treatment, silk printing and shape, all handled in-house as part of the ODM flow.

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