Heat-seal connectors-also known as "zebra connectors," heat-seal bonding connectors, or conductive strips-are a novel type of circuit interconnection material. They bond electronic display devices to circuits and are widely used to connect liquid crystal displays (LCDs) with printed circuit boards (PCBs) or touch panels. Key features include ease of use, flexibility, an ultra-thin profile, and reliable performance; they not only establish electrical continuity between components but also enable the design of thinner, lighter display devices.
This connection method is widely used in calculators, telephones, game consoles, electronic desk calendars, handheld computers, and other devices.
Models are specified by the number of lines (pins), center-to-center spacing (pitch), and length (e.g., 1018/210: pins=10, pitch=1.8mm, length=210mm). The minimum pitch is 0.2mm; various specifications and shapes can be manufactured, with a standard length of 210mm.
The conductive mechanism involves a PET film substrate printed with a mixture of conductive carbon and silver pastes according to specific requirements. A special anisotropic conductive adhesive is then applied, and the connector is heat-pressed onto the electrode contact points of the LCD and PCB.
Conductivity is <20Ω/square (at 25°C), and insulation resistance is >100MΩ (at 25°C). The operating temperature range is -35°C to 70°C, and the peel strength (T-peel) is >450gf/cm (strength can be increased upon customer request).
Application parameters include a heat-sealing temperature of 130°C–200°C (as displayed on the heat-sealing machine), a bonding time of 3–5 seconds, and a pressure of 1.0–2.0 bar. The shelf life exceeds one year.
