China home appliance electronic switches Manufacturer, Supplier, Factory

Tiantai Electronics is a leading China non-tactile membrane keypad manufacturer. Non-tactile membrane keypad with water proof IP66 and 3M back adhesive, pitch 1.0mm with 3 non-tactile sliver ink pads keys and LCD window.

Acrylic PMMA Graphic Overlay, also known as polymethyl methacrylate overlay, is an important plastic polymer material with a PMMA backing, which has the advantages of light weight, not easy to break, better transparency, easy to shape and process, and easy to colour. Its widely used in Architecture, advertising, transport, medicine, lighting industrials.

Tiantai Electronics is a leading China tactile switch keyboard manufacturer and supplier. A custom tactile switch keyboard, or custom membrane switch keypad, is a very versatile electronic component. Constructed of one single membrane switch or multiple membrane switches, they usually have a durable custom graphic overlay on top, providing resistance to a wide range of chemicals while also displaying custom graphics printing and text.

As a professional high quality flat membrane switch manufacturer, you can rest assured to buy flat membrane switch from Tiantai Electronics and we will offer you the best after-sale service and timely delivery. This flat membrane switches have 4 layers including graphic overlay, circuit spacer, circuit and back adhesive with connector.

Tiantai Electronics is a leading China digital printing non-tactile membrane switch manufacturer and supplier. Digital printing non-tactile membrane switch which ensures the switch remains touch-sensitive even after long time use. This technology has revolutionized the way we interact with electronic devices, making it possible to use even the slightest touch to operate any device.

The membrane switch keyboard is a popular subcategory of membrane technology, designed for reliability, cost-effectiveness, and ease of use. Constructed from flexible yet durable polyester and polycarbonate materials, the membrane switch is overlaid with legends and graphics for clear, custom labeling. The core function relies on opening and closing an electrical circuit via layered flexible sheets; when a user presses a key, the circuit is completed momentarily, rapidly registering input and minimizing contact bounce issues seen in older mechanical contacts. This type of keyboard is especially common as membrane keypads in household appliances such as washing machines, microwaves, air conditioners, remote controls, and smart home panels, where moisture and dust resistance are paramount. They are also widely used in point-of-sale (POS) systems, kiosks, copying machines, industrial HMI panels, medical devices, automotive consoles, vending machines, printers, and telecommunications equipment, highlighting their extensive role in both consumer and industrial environments. Critical components of a membrane switch keyboard include several precision-made layers, each serving a dedicated purpose to deliver reliable, long-term performance in high-use environments: Graphic Overlay – This uppermost layer forms the visible user interface and is often coated with durable, UV-resistant graphic inks to prevent fading. It is constructed from flexible polyester or polycarbonate for flexibility and longevity, often featuring customized icons, branding, or backlighting window openings for control panel integration. Domes – Domes are integral to tactile membrane keypads, providing a physical response or ‘snap’ when pressed. Plastic (polyester or polycarbonate) is common for most consumer goods, while metal domes are used for higher precision and longer service life. Dome size, shape (such as four-legged, triangular, round, or oblong), and material directly influence tactility, key travel, and actuation force. Spacer – The spacer maintains circuit separation and defines travel distance for each keystroke. It contains punctured holes (die-cut windows) directly beneath each keypad position to permit contact between the overlay and the conductive circuit layer, preserving the reliability of the switch actuation. Circuit Layer – The circuitry, often produced via screen printing (with silver, carbon, or copper-based conductive inks) or photochemical etching, forms the functional heart of the device. Advanced designs may use printed circuit boards (PCBs) for enhanced complexity and durability, allowing for double-layer or multi-layer circuits to accommodate complex functionalities, such as multi-zone lighting or integrated sensors. Circuit Terminal – A flat ribbon cable or flexible tail connects the membrane keypad to the main controller, ensuring quick and secure integration with embedded systems, PLCs, microcontrollers, or PCBs.