Microperforated Keycaps for Durable Hidden Backlit Glyphs
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Solution Overview
Problem
Conventional keyboards suffer from durability issues due to painted or coated keycaps that wear off easily, lack aesthetic appeal, and provide a low-quality tactile experience, especially in low-light conditions.
Innovation Solution
Keycaps with microperforations and embedded light sources that allow glyphs to appear or disappear selectively, using materials like metal for durability and a unified appearance, and a one-way visibility layer for enhanced aesthetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If keycaps are made thin and inexpensive using plastic with painted or coated glyphs, then manufacturing cost is reduced, but durability deteriorates as glyphs rub off or become unreadable over time
Solution Approach 1:
The keycap is divided into multiple layers: a base keycap structure and a separate one-way visibility layer with microperforations. This segmentation allows the glyph-forming perforations to be integrated into a durable layered construction rather than applied as a separate coating, preventing wear and rubbing off while maintaining manufacturing feasibility.
Solution Approach 2:
The keycap employs a composite structure combining a base keycap material with a one-way visibility layer containing microperforations. This composite approach creates a durable, multi-functional keycap where the layered construction enhances both longevity and visual characteristics without significantly increasing manufacturing complexity.
2Ease of manufacture
If keycaps are made thin and inexpensive using plastic, then manufacturing cost is reduced, but perceived quality deteriorates as tactile feedback and timbre are inferior
Solution Approach 1:
The keycap employs a composite structure combining a base keycap material with a one-way visibility layer containing microperforations. This composite approach creates a durable, multi-functional keycap where the layered construction enhances both longevity and visual characteristics without significantly increasing manufacturing complexity.
3Illumination intensity
If backlighting is added to illuminate glyphs in low light conditions, then visibility is improved, but energy consumption increases
Solution Approach 1:
The one-way visibility layer dynamically changes its optical properties based on lighting conditions. In ambient light, it reflects light to hide the perforations and create a uniform appearance. When backlit, it allows light transmission to reveal the glyph pattern, enabling adaptive visibility that responds to environmental lighting without requiring additional energy-intensive illumination systems.
Solution Approach 2:
The one-way visibility layer exhibits dynamic optical characteristics that change based on light direction and intensity. It transitions between a light-reflecting state that conceals perforations in ambient light and a light-transmitting state that reveals glyphs when backlit, providing adaptive visual behavior that optimizes visibility while minimizing energy consumption.
4Reliability
If a one-way visibility layer with microperforations is added to keycaps, then aesthetic appearance and durability are improved, but device complexity increases
Solution Approach 1:
The one-way visibility layer is integrated directly onto the keycap surface, merging the aesthetic function with the structural element. This integration combines multiple functions (durability, aesthetics, and optical control) into a single unified component rather than adding separate independent elements, thereby reducing overall system complexity while achieving enhanced performance.
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 solution provides high durability, customizable glyphs, and a refined appearance, enhancing user experience with improved tactile feedback and visibility in various lighting conditions.
Implementation Method 1
an array of lights attached to the bottom surface of the keycap, wherein each single light of the array of lights illuminates a single respective perforation of the array of perforations
Implementation Method 2
a one-way visibility layer for enhanced aesthetics
Data Source
AI summary
Keyboards and other electronic input devices have a key or keys with glyphs that are invisible to an unaided human eye in a first condition, such as when an underlying display attached to the key is not emitting light. The glyphs are visible through the key or keys when the display emits light. A one-way visibility layer or structure obscures the visibility of the display when viewed from above, but when the display emits light, the light penetrates through the one-way visibility layer, such as by passing through an array of microperforations in the key, and is visible to an onlooker.