What TFT LCD sizes does XUNRUI manufacture?

We produce TFT LCD modules from 0.96 inch to 27 inch. The most requested sizes are 1.8, 2.1, 3.5, 4.3, 5.0, 5.5, 7.0, 8.0, 9.0, 10.1, 11.6, 13.3 and 15.6 inch, in standard, round, bar and square formats.

What is the MOQ for a customized TFT LCD project?

After sample approval we offer a one-time small-batch trial run of 5 to 500 units to validate mass-production feasibility. Customized mass production then requires a minimum order quantity of over 1,000 units.

Which parameters of a TFT display can be customized?

Size, module thickness, backlight brightness, FPC flat cable length and pin-out, interface type, and touch panel size and shape can all be customized. We also supply capacitive and resistive touch panels, AV/VGA/HDMI/LVDS driver boards, adapter boards and glass cover plates.

How does XUNRUI control TFT LCD quality?

Every batch passes IQC incoming inspection, glass inspection, FOG inspection with aging, finished-product inspection with aging, and OQC outgoing inspection before shipment. Our management system is certified to ISO 9001 and ISO 14001.

Should I choose a capacitive or resistive touch TFT LCD?

Capacitive touch suits consumer-grade, medical and smart-home interfaces that need multi-touch and a glass cover. Resistive touch suits industrial and outdoor equipment operated with gloves or a stylus, or exposed to water droplets and electrical noise.

Industrial Display Engineering

China 4 Inch Capacitive LCD Screen Supplier & Factory

High-precision PCAP touch integration, square 480×480 and customized resolutions, high brightness, and extended life cycles engineered by Shenzhen Xunrui Optoelectronics for smart automation, industrial instrumentation, and medical HMIs.

Featured Standard & Capacitive LCD Solutions

Explore our precision-engineered small-to-medium TFT modules integrated with Projected Capacitive (PCAP) and Resistive touch arrays.

Custom 10.1 inch 1024×600 TN TFT LCD display with resistive touch panel

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Custom 8 inch TFT LCD module 800×1280 MIPI 31pin interface 480nit IPS screen

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Custom 8 inch 1280×720 LVDS 1000nit High Brightness IPS TFT LCD Module

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Custom 2 inch 176×220 MCU 45pin interface 220nit TN TFT LCD Module

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China 8 inch 800×600 RGB 50pin 350nit TN TFT LCD Display

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China 7 inch 1024×600 LVDS 40pin interface 350nit IPS TFT LCD module

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China 4.3 inch 800×480 IPS TFT LCD Module with resistive touch panel

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Custom 23.8 inch 1920×1080 IPS TFT LCD display with capacitive touch panel

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Industry Whitepaper & Market Insights

The Evolution of 4-Inch Capacitive LCD Screens in Smart Interfaces

How miniaturized high-pixel-density IPS panels and multi-touch projected capacitive sensing are reshaping human-machine interfaces across high-reliability sectors.

Transition to 1:1 Aspect Ratio

The market has seen an explosive shift toward square 4-inch displays (480×480 resolution). Driven by smart home switch panels (such as 86-type junction box wall switches), smart thermostats, and industrial rotary dials, the square format maximizes visual interface density without consuming excessive vertical or horizontal enclosure space.

Optical Bonding & Outdoor Legibility

Traditional air bonding leaves an air gap prone to internal reflection, moisture condensation, and Newton rings. Modern 4-inch capacitive modules utilize LOCA or OCA full lamination, combining 800+ nit high-efficiency backlights with anti-reflective (AR) and anti-fingerprint (AF) chemical treatments to deliver readable interfaces in direct sunlight.

Noise Immunity (CS/RS EMC Standards)

Industrial deployment requires projected capacitive touch controllers (such as FocalTech, Goodix, or ILITEK) to withstand harsh electrical fast transients and radiated EMI. Modern custom FPC designs incorporate integrated ground shielding layers to ensure accurate 5-point gesture tracking even with thick cover lenses or wet gloved operations.

Procurement Intelligence

Global Procurement Demand & Sourcing Bottlenecks

Navigating the engineering hurdles faced by Tier-1 OEM/ODM buyers when integrating compact touch display assemblies.

Supply Chain Obsolescence Management

Consumer display glass iterations can obsolete a design in 12–18 months. Xunrui guarantees an industrial lifecycle of 5 to 7+ years on critical active matrix glass, Driver ICs, and backlight diodes, supported by Last Time Buy (LTB) notices and pin-compatible successor paths.

Flexible Tooling & Trial Run Feasibility

Bypassing standard high MOQ requirements, we provide an iterative prototype cycle with pilot runs between 5 to 500 units. This enables product development teams to run drop tests, thermal chamber validation, and FCC/CE certification before investing in full production runs.

Total Cost of Ownership (TCO) Optimization

Direct Chinese factory-level integration of TFT array cutting, FOG (Film on Glass) bonding, and automated PCAP module assembly cuts intermediary markups, providing an optimal price-to-performance ratio while strictly conforming to ISO 9001 and ISO 14001 specifications.

2,000,000+

Monthly Module Production Capacity

5-Stage

Rigorous Quality Gate Inspections

5 - 500 Pcs

NPI Pilot Run Batch Support

ISO 9001

Certified Factory QA Standards

Macro Sector Deployments

Engineering-Grade Industrial Display Solutions

Tailoring optical characteristics, mechanical durability, and touch firmware to extreme operational parameters.

Smart Home & Building Automation

Square 4" and rectangular IPS displays tailored for multi-functional smart switch hubs, HVAC thermostats, and access control terminals. Engineered with ultra-wide 80/80/80/80 viewing angles, seamless black bezel cover glass printing, and low standby power dissipation.

Industrial Instruments & Edge HMIs

Built for harsh manufacturing plant floors subjected to extreme thermal loads (-20°C to +70°C). Custom Cover Lens thicknesses up to 3mm chemically strengthened glass (IK08 impact resistance) capable of operating with industrial nitrile, leather, or surgical gloves.

Medical Diagnostic Equipment

Engineered for portable infusion pumps, handheld patient monitors, and point-of-care laboratory equipment. Features high electromagnetic immunity (IEC 60601-1-2 standards), anti-bacterial coatings, and liquid rejection algorithms to ignore saline or blood droplets.

Electric Vehicle & Micro-Mobility

Compact instrumentation for e-bikes, two-wheeler dashboards, and commercial telematics terminals. Equipped with sunlight-readable 1000+ nit backlights, UV-resistant polarizers to prevent solar blackening, and wide operating ranges from -30°C to +80°C.

Reliability Assurance

Localized Support, Stringent Compliance & Quality Control

Factory-direct accountability backed by internationally recognized quality systems and end-to-end technical support.

5-Stage Quality Gate Framework

Every 4-inch display assembly undergoes IQC raw glass analysis, automated optical inspection (AOI) during FOG bonding, 48-hour thermal aging under load, finished optical testing, and rigorous OQC pre-shipment sampling to guarantee zero dead-pixel standards.

Global Environmental Compliance

All display stacks, driver boards, and adhesive layers are certified to RoHS, REACH, CE, and FCC directives. Manufactured in our ISO 9001 and ISO 14001 certified Shenzhen facility, providing complete material traceability declarations for North American and European imports.

Direct Engineering Integration

Eliminate distributor communication lag. Our hardware, firmware, and optical engineers work directly with your embedded development team to debug RGB/MIPI/SPI driver timing, touch I²C interrupt mappings, and custom FPC mechanical routing.

Next-Gen Display Architecture

Technology Roadmap: Future Innovations in Small-Format Displays

Discover how Xunrui is integrating next-generation display architectures to meet tomorrow's smart interface demands.

Mini-LED Local Dimming

Migrating next-gen 4" industrial displays toward localized mini-LED backlight matrices. This technology yields contrast ratios exceeding 100,000:1 with ultra-deep black levels while significantly curbing power consumption in battery-operated medical and IoT field devices.

Integrated Haptic Feedback

Moving beyond basic visual interaction, our advanced PCAP research incorporates piezoelectric actuators directly behind the cover lens, offering localized physical tactile clicks that confirm user inputs in high-vibration automotive and mission-critical medical applications.

On-Cell & In-Cell Touch Integration

Transitioning from discrete Out-Cell (sensor glass lamination) to In-Cell architectures where capacitive sensing circuits are integrated directly within the TFT pixel array, cutting module thickness by up to 35% and dramatically boosting optical transmission.

Knowledge Base & FAQ

Frequently Asked Engineering & Procurement Questions

Detailed technical answers to common integration queries for custom capacitive display projects.

What interfaces are available for a China 4-inch capacitive LCD screen?

Our 4-inch capacitive modules support multiple interface topologies depending on your host processor. Standard square 480×480 panels typically utilize RGB 24-bit, MIPI DSI (2-lane), or SPI+RGB. The capacitive touch screen controller (PCAP) communicates over an I²C interface (with interrupt and reset pins) or via USB conversion boards for x86 and Linux industrial computers.

Can capacitive touch screens operate reliably with thick gloves or water droplets?

Yes. Standard consumer-grade PCAP settings struggle with water and thick insulation. However, at Xunrui, we program industrial touch controller firmware (e.g., ILITEK, FocalTech) with specific mutual-capacitance algorithms and custom drive parameters to support up to 5mm cover glass operation, wet finger rejection, and compatibility with heavy nitrile or leather work gloves.

What is the typical NPI lead time for custom display samples and FPC tooling?

Upon signing off on the 2D CAD and FPC schematic drawings:

Custom FPC / Backlight Tooling: 12 to 18 working days.
Custom Cover Glass (Silk screening & shaping): 15 to 20 working days.
Prototype Assembly & Optical Calibration: 5 to 7 working days.

Total sample delivery typically ranges within 3 to 4 weeks.

What are the differences between Optical Bonding (OCA/LOCA) and Air Bonding?

Air Bonding adheres only the perimeter of the touch sensor to the TFT frame with double-sided tape, leaving an air gap that can cause reflections in bright environments. Optical Bonding (OCA/LOCA) fills the gap completely with an optical adhesive matching the refractive index of glass (n≈1.5). This eliminates internal reflections, boosts contrast by up to 400%, prevents condensation, and enhances mechanical shock resistance.

What minimum order quantity (MOQ) applies to customized 4-inch display projects?

To assist customers through prototype validation and field trials, we support one-time small-batch engineering pilot runs of 5 to 500 units. Once the design is validated, full mass production orders require an MOQ of 1,000 units. Standard off-the-shelf catalog models carry no strict MOQ.

How does Xunrui guarantee long-term product availability for industrial devices?

We partner directly with leading industrial glass foundries (such as BOE, Innolux, and HannStar). We select industrial roadmap panels with guaranteed production lifespans of 5 to 7+ years. If an upstream wafer component or LED driver is sunset, we issue formal EOL/LTB notifications at least 6 to 12 months in advance and develop drop-in compatible solutions.