Display Device Color Adjustment Pattern Stepped Structure
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display devices suffer from insufficient color purity due to inadequate wavelength filtering, leading to inaccurate image representation, and are prone to pixel electrode failures despite using color adjustment patterns with sufficient thickness.
Innovation Solution
A display device design incorporating a color adjustment pattern with a wavelength absorption pattern and a wavelength conversion pattern on an insulating substrate, where the wavelength conversion pattern converts the center wavelength of incident light, and a pixel electrode is electrically connected to a switching element via a contact hole, preventing open circuit failures by forming a stepped portion along the sidewall.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a color filter is used to achieve primary colors by absorbing partial wavelength bands, then color display is enabled, but color purity is insufficient
Solution Approach 1:
The color filter is divided into multiple layers with each layer responsible for absorbing specific wavelength bands. This segmentation allows more precise control over which wavelengths are transmitted, thereby improving color purity and image representation accuracy.
Solution Approach 2:
Different regions of the color filter are designed with different absorption characteristics. The first color filter layer absorbs specific wavelength bands while the second color filter layer absorbs different wavelength bands, creating local variations in optical properties to achieve high color purity.
2Measurement precision
If a color adjustment pattern with sufficient maximum thickness is used, then color purity is improved, but pixel electrode floating failure occurs
Solution Approach 1:
The color adjustment pattern is designed with a stepped structure that extends in the vertical dimension. The first stepped portion and second stepped portion create height variations that provide electrical connection paths for the pixel electrode while maintaining the overall thickness for color purity.
Solution Approach 2:
The pixel electrode is designed to nest within the stepped structure of the color adjustment pattern. The electrode follows the contour of the stepped portions, allowing it to be electrically connected to the switching element while passing through the color adjustment pattern without causing floating failures.
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 enhances color purity and prevents pixel electrode open circuit failures, ensuring improved display quality and reliability.
Implementation Method 1
a wavelength absorption pattern which is disposed on the insulating substrate and selectively transmits a predetermined wavelength band of the incident light
Implementation Method 2
a wavelength conversion pattern which is disposed directly on the wavelength absorption pattern and converts a center wavelength of the incident light from a light source
Data Source
AI summary
A provided is a display device. The display device in which a plurality of pixels comprising a first pixel for displaying a first color is defined, the display device comprises: an insulating substrate; and a color adjustment pattern which is disposed in a first pixel on the insulating substrate, emits incident light by adjusting the color of the incident light, and has a first stepped portion formed on at least a part of an edge.