Luminous Keyboard Key Illumination Uniformity
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Solution Overview
Problem
Conventional luminous keyboards lack the ability to control the illumination of individual keys, resulting in unsatisfactory luminance uniformity.
Innovation Solution
A luminous keyboard design featuring top-view light-emitting elements and a light guide plate system that allows for independent control of each key's illumination, with light beams being divided and guided to specific regions of the keycap to achieve enhanced luminance uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional luminous keyboards use illumination modules with light guide plates, then the keyboard provides luminous function, but the luminance uniformity across keycaps is unsatisfactory
Solution Approach 1:
The patent divides the illumination system into independent key-level units. Each keycap has its own light-emitting element (LED or EL element) positioned directly beneath it, allowing individual control and optimization of light distribution for each key, thereby achieving uniform luminance across all keys.
Solution Approach 2:
The patent implements localized illumination by placing light-emitting elements directly under each keycap rather than using a centralized illumination module. This allows each key to have optimized light distribution characteristics tailored to its specific position and requirements, improving overall luminance uniformity.
2Adaptability or versatility
If conventional luminous keyboards use centralized illumination modules, then the structure is simpler, but individual key illumination control is not achievable
Solution Approach 1:
The illumination system is segmented into independent key-level units, with each keycap having its own light-emitting element. This segmentation enables individual key illumination control while distributing the system complexity across multiple simple, identical units rather than one complex centralized module.
Solution Approach 2:
Each keycap assembly is designed to be self-contained with its own light-emitting element, allowing each key to independently control its illumination without relying on a centralized control system. This simplifies the control architecture while enabling individual key adaptability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise control over the illumination of individual keys, significantly improving luminance uniformity by directing light beams to specific areas of the keycap.
Implementation Method 1
The top-view light-emitting element is located under the key structure and inserted into the light guide plate opening, and emits a light beam
Implementation Method 2
a second-portion beam of the light beam is introduced into the light guide plate through the switch circuit board and guided to a second region of the key structure by the light guide plate
Data Source
AI summary
A luminous keyboard includes a key structure, a supporting plate, a switch circuit board, a light guide plate and a top-view light-emitting element. The supporting plate includes an opening. The top-view light-emitting element emits a light beam. The supporting plate is located under the key structure. The switch circuit board is located over the supporting plate. The light guide plate is located under the supporting plate and includes a light guide plate opening. The top-view light-emitting element is inserted into the opening. After the light beam is transmitted through the opening, a first-portion beam of the light beam is transmitted through the switch circuit board and projected to a first region of the key structure. A second-portion beam of the light beam is sequentially blocked by the switch circuit board, introduced into the light guide plate, and guided to a second region of the key structure.