Touch Panel Border Color Diversification via Optical Compensation
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Solution Overview
Problem
Existing touch panels face challenges in diversifying border colors beyond single shades like black or white, as pigments and dyes used for color adjustment are not easily mixed and can discolor under high manufacturing temperatures, leading to defective products.
Innovation Solution
Incorporating an optical compensation layer between the plate and the border, which adjusts the border color through optical interference, allowing for various color appearances without altering the ink or photo resist color, thus enabling color diversification and maintaining product integrity at higher temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If pigment or dye is added to ink or photo resist to adjust border color, then color diversification is achieved, but manufacturing reliability deteriorates due to discoloration under high temperature
Solution Approach 1:
The patent introduces an optical compensation layer as an intermediary between the ink layer and the viewing side. This layer has specific optical properties (refractive index, thickness) that interact with the light reflected from the colored border, creating the appearance of different colors without requiring the ink itself to contain temperature-sensitive dyes. The optical compensation layer mediates between the stable black/white ink and the desired diverse color appearance, solving the contradiction by decoupling color stability from color diversity.
Solution Approach 2:
The patent utilizes optical interference and light reflection principles to achieve color changes. By controlling the thickness and refractive index of the optical compensation layer, different wavelengths of light are enhanced or suppressed, creating the perception of different colors (e.g., blue, green, red) from a fundamentally stable ink layer. This approach enables color diversification without introducing temperature-sensitive materials.
2Adaptability or versatility
If pigment or dye is added to ink or photo resist to adjust border color, then color diversification is achieved, but manufacturing complexity increases due to additional processes and mixing requirements
Solution Approach 1:
The optical compensation layer serves as a mediator that simplifies the manufacturing process. Instead of requiring complex mixing and matching of pigments and dyes to achieve different colors, the process uses a standard ink formulation combined with an optical compensation layer of varying thicknesses or materials. This intermediary approach reduces manufacturing complexity while maintaining color diversification capabilities.
Solution Approach 2:
The patent achieves color diversification by changing physical parameters of the optical compensation layer (thickness, refractive index) rather than changing the chemical composition of the ink. This parameter-based approach simplifies manufacturing because it allows color variation through physical control (e.g., deposition thickness) rather than complex chemical formulation and mixing processes.
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 optical compensation layer effectively changes the border color, enhancing the touch panel's appearance and increasing production yield by preventing discoloration issues, allowing for a wider range of color options without compromising manufacturing processes.
Implementation Method 1
the optical compensation layer is disposed on the border and is located between the plate and the border
Data Source
AI summary
The present disclosure provides a touch panel including a plate, a sensing layer, a border, and an optical compensation layer, wherein the plate has an upper surface and a lower surface opposite to the upper surface, wherein the lower surface is planned with a conducting wire region and a sensing region. The border is overlaid on the conducting wire region, and the sensing layer is disposed in the sensing region. An optical compensation layer is disposed on the border, and is located between the plate and the border. The border has a first color, which appears as a second color if a user sees the border through the optical compensation layer, and thus achieves diversification of the border color.