{"id":3327,"date":"2025-07-21T15:09:16","date_gmt":"2025-07-21T15:09:16","guid":{"rendered":"https:\/\/shanyosnap.com\/what-is-light-guide-film-lgf\/"},"modified":"2025-10-30T10:09:19","modified_gmt":"2025-10-30T10:09:19","slug":"what-is-light-guide-film-lgf","status":"publish","type":"post","link":"https:\/\/shanyosnap.com\/fr\/what-is-light-guide-film-lgf\/","title":{"rendered":"Qu'est-ce qu'un film guide de lumi\u00e8re (LGF) ?"},"content":{"rendered":"

LGF<\/strong><\/em><\/a> is a thin film that guides the light generated by side-emitting or right-angle LEDs to areas that require backlight. The film is placed directly under the graphics cover layer and above the circuit layer so that the light will not be blocked by any circuit traces or tactile devices. The film can be cut into any pattern or shape in the switch. Multiple LGF films can be used in one application to provide discrete backlighting for different graphic features. Different colors of LEDs can be used to achieve unique lighting effects, or white LEDs can be used to illuminate different printed graphics on the cover layer.<\/p>\n

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Since LGF is only a conduit for the light generated by the LED, the film must be adjacent to the right-angle LED. The placement of the LED in the switch depends on several factors and will be determined by the Shanyo engineering team.<\/p>\n

When to use (and not to use) the light guide film as the backlight of the switch<\/h2>\n

Although LGF is usually a more expensive backlight option (compared to other backlight options), it has the following advantages\uff1a<\/p>\n