US Patent 10984969 Uniform illumination of keys on a flexible substrate
Patent 10984969 was granted and assigned to Apple (company) on April, 2021 by the United States Patent and Trademark Office.
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Systems and methods for providing illumination to illuminable portions of keys associated with a keyboard are described. A key disposed on a flexible substrate includes a light guide positioned below a keycap. The light guide includes one or more light extraction features to produce a substantially uniform light distribution of light from a light emitting element at an illuminable portion of the key. In one embodiment, a light emitting element is positioned on the flexible substrate and is optically coupled to the light guide. In another embodiment, a light emitting element is positioned below the flexible substrate and is optically coupled to the light guide via an optical interface.
US Patent 10984969 Uniform illumination of keys on a flexible substrate
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