Metal Oxide Keycap Patterning for Faster Backlit Character Formation
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Solution Overview
Problem
The manufacturing process of light-transmitting keycaps for backlit keyboards is tedious and lengthy, requiring the spraying of paint and subsequent laser engraving to create characters or graphic symbols, which is time-consuming and material-intensive.
Innovation Solution
Doping metal oxides into the keycap main body and irradiating specific regions with an energy beam to create opaque and light-transmitting regions, eliminating the need for paint and laser engraving, and allowing light-emitting members to display characters or graphics through the keycap.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If paint spraying and laser engraving are used to create light-transmitting regions, then characters or graphics can be displayed, but manufacturing time and process complexity increase significantly
Solution Approach 1:
Metal oxides are doped into the keycap main body during the initial manufacturing process, preparing the material in advance for subsequent light-transmitting region formation. This preliminary doping eliminates the need for separate paint spraying steps, reducing manufacturing time while maintaining character display precision
Solution Approach 2:
The invention extracts and removes the unnecessary intermediate steps of paint spraying and traditional laser engraving. By directly forming light-transmitting regions through selective irradiation of metal oxide-doped areas, the process eliminates redundant operations while achieving the same character display effect
2Manufacturing precision
If multiple processing steps (paint spraying, laser engraving, adhesive coating) are used, then light-transmitting regions are formed, but manufacturing process complexity increases
Solution Approach 1:
The invention merges the functions of paint spraying, pattern formation, and protective coating into a single integrated process. Metal oxides are doped during keycap manufacturing, and selective irradiation simultaneously creates the light-transmitting patterns and defines character regions, eliminating the need for separate processing steps and reducing overall process complexity
Solution Approach 2:
The metal oxide doping serves multiple functions: it provides the base material for light-transmitting region formation, enables selective irradiation processing, and creates the character patterns directly. This multi-functional approach replaces multiple specialized processing steps with a single versatile method
3Loss of information
If traditional laser engraving on painted surfaces is used, then characters are visible, but material usage and waste increase
Solution Approach 1:
The invention changes the fundamental parameter of how light-transmitting regions are created. Instead of removing material through engraving or adding paint layers, the method uses selective irradiation to transform the optical properties of metal oxide-doped areas, directly creating visible characters without material waste
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
This method significantly reduces the manufacturing time and material usage, while enhancing the keycap's durability and aesthetic appeal by forming light-transmitting regions with varying transmittancies through different energy beam wavelengths.
Implementation Method 1
The light-transmitting region is formed by irradiating a portion of the opaque region with an energy beam
Data Source
AI summary
A keycap includes a keycap main body and multiple metal oxides. The metal oxides are doped in the keycap main body and forms an opaque region and a light-transmitting region in the keycap main body. The light-transmitting region is formed by irradiating a portion of the opaque region with an energy beam. A transmittancy of the light-transmitting region is greater than a transmittancy of the opaque region. A manufacturing method of the keycap is also disclosed.