Double-Sided Impedance-Controlled FPC for Display Connectors

Product Overview

As a critical "signal bridge" between the motherboard and display, this double-sided impedance-controlled flexible printed circuit (FPC) is specifically engineered for display connector scenarios. Its core value lies in solving stability challenges during high-speed signal transmission, ensuring high-definition, low-latency video signals and precise touch signal response. It serves as a key component for display modules in various smart devices.

Premium Material Selection

• Core Substrate: Adopts Panasonic RF775 polyimide film, featuring excellent high-temperature resistance (long-term operating temperature above 200℃), aging resistance, and insulation performance. It maintains structural stability even in harsh environments such as humidity and vibration.
• Conductive Layer: Equipped with TG320 adhesive-free rolled copper foil. Compared with traditional adhesive copper foil, it offers lower conductive loss, higher signal transmission efficiency, and extends the flexible bending life of the FPC to meet the frequent assembly and usage needs of devices.

Ultra-Thin Structure & Flexible Supply

• Ultra-Thin Design: With an overall thickness of only 0.2mm and a two-layer circuit structure, it achieves lightweight integration without compromising impedance control accuracy or mechanical strength. It can be easily embedded in narrow installation spaces such as smartphones and portable displays.
• Specifications & Supply: Single-piece size is 168×117mm, compatible with the interface layout of mainstream display modules. It adopts a batch supply mode of 2 pieces per batch, catering to both small-batch trial production and medium-batch production needs, reducing customers' inventory and procurement costs.

Key Features & Specifications

Key Feature	Technical Specification	Core Advantage
Surface Finish	ENIG (Electroless Nickel Immersion Gold)	Enhances oxidation resistance and solderability, reduces contact resistance during long-term use, and ensures stable interface connection.
Outer Copper Thickness	35μm	Minimizes signal attenuation during transmission, adapts to high-definition video (e.g., 4K) and high-speed touch signal transmission, avoiding signal distortion.
Circuit Precision	Min. line width/spacing: 4/4mil; Min. via size: 0.25mm	Supports high-density circuit layout, adapts to multi-signal channel design of display modules, and reduces circuit interference.
HDI Design	Mechanical via density: 2 holes/cm²	Meets wiring needs of high-integration display devices, optimizes circuit signal paths, and reduces crosstalk risk.
Solder Mask & Silkscreen	Yellow solder mask + White silkscreen	Clear silkscreen marks facilitate positioning and inspection during production assembly; yellow solder mask improves appearance recognition and scratch resistance.
Via Protection	Overlay-covered vias	Isolates external dust and moisture from eroding vias, extends product service life, and improves reliability in harsh environments.

Rigorous Testing & Certification

Before delivery, the product undergoes three core tests to ensure stability in different application scenarios:

• Impedance Test: Full-link impedance control accuracy of ±10%, matching the impedance requirements of display modules and motherboards to avoid signal reflection.
• Insulation Resistance Test: Under high-temperature and high-humidity conditions (85℃/85%RH), insulation resistance ≥10¹⁰Ω to prevent circuit short circuits.
• Mechanical Durability Test: After 1000 bending tests (bending radius 1mm), the circuit conductivity remains normal, adapting to bending needs during device assembly and use.

Wide Application Fields

With excellent signal transmission performance and environmental adaptability, the product is widely used in:

• Consumer Electronics: Display and touch modules of smartphones, tablets, and OLED portable displays.
• Automotive Electronics: Signal interfaces for in-vehicle central control navigation and instrument panel displays.
• Communication Equipment: Display connectors for 5G base station supporting displays and portable 5G terminals.
• Industrial Automation: Industrial touch screens and display control modules of automation equipment.