Keyboard device and method of manufacturing the same

By integrating flip-chip LEDs and reflectors inside the keyboard keys, the design solves the problems of complex structure and uneven brightness in existing keyboard backlight modules. It achieves independent backlight control at the key level and simplifies manufacturing, making it suitable for thin and high-response electronic input devices.

CN120748953BActive Publication Date: 2025-11-21SHENZHEN YOUCAIJIA TECH CO LTD
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Patent Information

Application Number
CN202511165162.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-08-20
Publication Date
2025-11-21
Estimated Expiration
2045-08-20

AI Technical Summary

Technical Problem

Existing keyboard backlight modules have complex structures, occupy a large space, have uneven brightness, are difficult to control key by key, and have complex manufacturing processes, which is not conducive to the development of thin and light designs.

Method used

The design combines flip-chip LEDs with reflectors, with each button serving as an independent light-emitting unit. The LEDs are encapsulated inside the buttons using flip-chip technology, and the reflectors are used to improve the concentration and uniformity of light, eliminating the need for light guide plates and centralized light sources.

Benefits of technology

It achieves independent light emission control at the button level, improves luminous efficiency and structural integration, simplifies manufacturing process, and is suitable for thin and high-response electronic input devices.

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Abstract

The application relates to the technical field of integrating light source elements on a printed circuit board, and provides a keyboard device and a manufacturing method thereof. The keyboard device comprises a keyboard base and a plurality of keys. At least one key comprises a packaging portion and a reflecting portion, and the reflecting portion is arranged at the bottom of the packaging portion. A light emitting chip is arranged in a flip-chip mode inside the packaging portion, a light emitting surface of the light emitting chip faces the reflecting portion, and a conductive structure is formed on the light emitting chip. The conductive structure is partially exposed outside the packaging portion. When a user presses the key, the conductive structure is electrically connected with a printed circuit board, so that the light emitting chip is driven to emit light, and each key functions as an independent light emitting unit. The application realizes the highly-integrated light emitting design in the key, improves the backlight uniformity, and simplifies the structure manufacturing process.
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