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Chaosheng Electronics China | Full Set of Core Technologies: Large Film Switches, Fused Film Screens, Display Silver Wires, Ultra Large Flexible FPCs
Release time:
2026-08-16 18:13
Large sized flexible silver wire PETFPC Extra large carbon wire PETFPC Extra large carbon wire+silver wire PETFPC Touch screen flexible silver wire FPC Touch screen flexible carbon oil line FPC Film switch PET silver wire FPC Film switch PET silver oil circuit FPC Film switch PET carbon oil circuit FPC Large size film switch PET carbon oil circuit FPC Ultra large size thin film switch flexible FPC
China Chaosheng Electronics | A complete set of core technologies including large film switches, fused film screens, silver wires for display screens, and ultra large flexible FPCs
Large sized flexible silver wire PETFPC
Extra large carbon wire PETFPC
Extra large carbon wire+silver wire PETFPC
Touch screen flexible silver wire FPC
Touch screen flexible carbon oil line FPC
Film switch PET silver wire FPC
Film switch PET silver oil circuit FPC
Film switch PET carbon oil circuit FPC
Large size film switch PET carbon oil circuit FPC
Ultra large size thin film switch flexible FPC
1、 Core hard power of ultra large flexible FPC circuit board
1. Extreme specification parameters
1. Maximum processing surface size * * 3000mm * 1100mm * *, ultra long roll to roll R2R flexible sheet can achieve a single strip length of 5m and a total roll length of 200m; conventional width 250-750mm customization
2. Board layer: Single layer to 60 layer multi-layer soft board, 3-60 layer soft hard combination HDI arbitrary order blind buried hole FPC
3. Substrate: PI non adhesive flexible substrate, DuPont original polyimide material, ultra-thin 0.10mm ultra-thin flexible board
2. Precision process technology
1. * * Laser drilling accuracy ± 5 μ m * *, minimum micropore 76 μ m; Precision etching line width/spacing ≤ 25 μ m, fine circuit 15-38 μ m
2. Fully automated production line: automatic film sticking, laser drilling, electroplating, forming, AOI optical inspection, defect detection rate>99.5%
3. Bending life ≥ 100000 times, temperature resistance -40 ℃~160 ℃, supporting high-frequency mixed pressure, buried copper, buried resistance, and special structure of ceramic beads
4. Exclusive large-size production equipment: exposure, screen printing, etching, pressing, testing equipment suitable for processing 2600mm ultra large board surface
3. Applicable direction
Industrial control screen, new energy vehicle central control, 800G optical module cable, AI server internal soft cable, curved display screen cable, large equipment control panel
2、 Large scale membrane switch (silver paste conductive line FPC composite process)
1. Two mature process routes
1. PET silver paste silk screen film switch**
PET polyester based screen printing of nano conductive silver paste to produce silver wire circuits and insulation ink layering barriers; The minimum line width is 0.1mm, and multiple layers are stacked to achieve matrix buttons. The button pressing life can reach 1 million times, and it supports IP67 waterproof and salt spray resistant industrial standards for 48 hours.
2. FPC substrate high-end film switch**
PI flexible soft board etched copper foil circuit, locally silver paste reinforced contacts; It can directly SMT surface mount components, LED indicator lights, surface mount resistors, and has a soft hard composite reinforcement structure that adapts to curved shells and repeated bending conditions. It is widely used in car and medical equipment control panels.
2. Advantages of customizing oversized sizes
Can produce full board ultra long industrial panel switches, breaking free from the size constraints of conventional small button panels, and integrating the panel and FPC lead out cables into one.
3、 Fusion screen (thin film touch composite screen body) technology
The essence of a fused film screen is an integrated process of flexible thin film touch layer and display panel bonding**
1. Bottom layer PET silver wire conductive touch film, screen printed nano silver gate circuit to achieve capacitive touch sensing;
2. Adopting OCA optical adhesive for full lamination, eliminating air layers, anti glare, and low reflectivity;
3. Integrated touch signal output with ultra large FPC flexible cable hot pressing bonding;
4. Support irregular, curved large screens, and long strip device touch panels, resistant to high temperature bending, suitable for industrial control, home appliances, and equipment consoles.
4、 Display screen silver wire (core process of nano silver conductive wiring)
1. Two major silver wire preparation schemes
1. Screen printed silver paste circuit (thin film switch/touch film)**
Using Panasonic and high-end nano silver conductor paste, screen printing to form touch electrodes and lead out silver wires; Advantages: Suitable for ultra large and wide film, controllable cost, and uniform and stable line impedance.
2. FPC etched silver coating fine silver wire**
The surface of the copper circuit on the flexible PI board is electroplated with thick silver, which is used for the binding area of the display screen, FPC gold fingers, and screen bonding pins. It is anti-oxidation, low contact impedance, and suitable for high-frequency signal transmission.
2. Key technical indicators of silver wire
-Ultra fine silver wire with a line width of 25-100 μ m;
-The bending resistant silver layer does not crack or peel off;
-Low impedance, uniform pressure drop for large screen touch, no blind spots for touch.
5、 The entire product application track
New energy vehicle central control panel, industrial large operation console, medical equipment panel, commercial large screen touch, 800G optical module FPC cable, AI computing power server flexible interconnect board, home appliance curved touch panel, large mechanical equipment thin film button assembly.
6、 Can be equipped with one-stop service
Large size FPC sampling - mass production, SMT surface mount, DIP plug-in, PCBA whole board processing, thin film switch panel, fused film touch screen, customized silver paste conductive film, and development of HDI soft board combining software and hardware.
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