Touch Lighting Keyswitch Structure for Light Leakage Isolation
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Solution Overview
Problem
Conventional illuminated touch modules suffer from light leakage between operation buttons, making assembly difficult and failing to provide a preferred user experience due to ineffective light isolation.
Innovation Solution
A touch lighting keyswitch design featuring a circuit board with sheltering components and light guiding components that utilize bridging portions between light guide bodies to absorb and reflect light beams, preventing leakage and allowing for easy assembly, along with a touch lighting function key bar that provides distinct illumination modes for standby and actuated buttons.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If light guide units are monolithically integrated with each other, then assembly is simplified, but light leakage between adjacent buttons cannot be effectively prevented
Solution Approach 1:
The patent divides the light guide structure into multiple independent light guide bodies, each corresponding to a specific button. These segmented light guide bodies are spaced apart from each other, preventing light from one button from leaking into adjacent buttons while maintaining individual control and functionality.
Solution Approach 2:
The patent introduces light-shielding components as intermediary elements positioned between adjacent light guide bodies. These shielding components act as mediators that block light propagation between neighboring light guide bodies, effectively preventing light leakage while allowing the light guide bodies to remain closely spaced for structural integrity.
2Object-affected harmful factors
If light guide units are spaced from each other by a preset distance, then light leakage is prevented, but assembly becomes difficult
Solution Approach 1:
The patent introduces light-shielding components as intermediary elements positioned between adjacent light guide bodies. These shielding components act as mediators that block light propagation between neighboring light guide bodies, effectively preventing light leakage while allowing the light guide bodies to remain closely spaced for structural integrity.
Solution Approach 2:
The patent combines multiple light guide bodies and light-shielding components into an integrated assembly structure. This merging approach allows the components to be pre-positioned and aligned during manufacturing, simplifying the overall assembly process while maintaining the necessary spacing and shielding between light guide bodies.
3Object-affected harmful factors
If a single light guide unit is used per button, then light isolation is improved, but device complexity increases
Solution Approach 1:
The patent divides the light guide structure into multiple independent light guide bodies, each corresponding to a specific button. These segmented light guide bodies are spaced apart from each other, preventing light from one button from leaking into adjacent buttons while maintaining individual control and functionality.
Solution Approach 2:
The patent designs a standardized light guide body structure that can be replicated across multiple buttons. This universal design approach, combined with repeated light-shielding components, maintains light isolation for each button while reducing overall design complexity through pattern repetition and modular construction.
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
The design effectively prevents light leakage between buttons, ensuring preferred light isolation and easy assembly, while providing a backlight function in standby mode and an interaction illumination effect when buttons are pressed, enhancing the design texture of the touch lighting keyswitch and keyboard.
Implementation Method 1
The first light guiding component is disposed between the circuit board and the first sheltering component, and adapted to guide the first illumination beam passing through the character hole
Implementation Method 2
The second light guiding component is disposed between the second sheltering component and the first sheltering component, and adapted to guide the second illumination beam transmitting towards the opening when the first illumination beam passes through the character hole and the opening
Implementation Method 3
utilize bridging portions between light guide bodies to absorb and reflect light beams, preventing leakage
Implementation Method 4
utilize bridging portions between light guide bodies to absorb and reflect light beams, preventing leakage
Data Source
AI summary
A touch lighting keyswitch can be changed to a touch lighting function key bar includes a circuit board, a first sheltering component, a first light guiding component, a second sheltering component and a second light guiding component. The circuit board has a first light unit and a second light unit respectively emitting a first illumination beam and a second illumination beam. The first sheltering component has a character hole. The first light guiding component is disposed between the circuit board and the first sheltering component and adapted to guide the first illumination beam passing through the character hole. The second sheltering component is disposed above the first sheltering component, and has an opening relevant to the character hole. The second light guiding component is disposed between the first sheltering component and the second sheltering component and adapted to guide the second illumination beam passing through the opening.