Color Panel Dummy Element Oxidation Protection
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Solution Overview
Problem
Display apparatuses with color conversion elements suffer from oxidization and deterioration, leading to reliability issues and stains in the display area, affecting the display quality and reliability.
Innovation Solution
A color panel with a substrate having a display area and a non-display area, featuring a color filter layer and a color conversion layer containing quantum dots or light-scattering particles, along with a dummy element in the non-display area to prevent deterioration and minimize stains, and a light-shielding member between the substrate and the color conversion layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If color conversion elements (quantum dots) are arranged in the display area to improve color gamut and light efficiency, then display quality is improved, but oxidization and deterioration occur leading to stains and reliability errors
Solution Approach 1:
The patent divides the color conversion elements into functionally distinct groups: real pixel elements (first, second, third elements) that convert light for display, and dummy elements (fourth element) that do not convert light but serve protective and reference functions. This segmentation allows the dummy elements to sacrifice themselves to oxidation rather than the valuable color conversion elements in the display area.
Solution Approach 2:
The dummy element acts as an intermediary or sacrificial component between the light-shielding member and the real color conversion elements. It absorbs oxidative damage and environmental stress that would otherwise affect the functional quantum dots, thereby protecting the display quality while maintaining reliability.
2Illumination intensity
If color conversion elements are arranged at the edge of the display area, then color gamut is improved, but stains and deterioration occur more frequently in these regions
Solution Approach 1:
The patent applies local quality by placing dummy elements specifically at the edge regions of the display area where stains and deterioration are most problematic. These dummy elements have different functional properties (no light conversion) compared to the real pixel elements, creating a localized protective zone that prevents stains from spreading to the display area while maintaining color gamut improvement.
3Reliability
If dummy elements are added to the color conversion layer to prevent deterioration, then reliability is improved, but device complexity increases
Solution Approach 1:
The dummy elements serve multiple functions simultaneously: they act as sacrificial components that absorb oxidation, provide reference patterns for manufacturing alignment, and create protective barriers against stain propagation. This multi-functionality allows a single structural addition to address multiple reliability issues without proportionally increasing complexity.
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 the display characteristics and reliability of the color panel by minimizing oxidization and deterioration of the color conversion elements, thereby improving the overall performance and reducing stains in the display area.
Implementation Method 1
a color conversion layer arranged on the color filter layer and including a plurality of quantum dots or light-scattering particles, wherein the plurality of quantum dots are to convert the incident light into converted light of a particular wavelength band, different from the wavelength band of the incident light
Implementation Method 2
the light-scattering particles are to transmit the incident light
Data Source
AI summary
According to one or more embodiments, a color panel includes: a substrate including a display area and a non-display area at least partially surrounding the display area, the display area including a plurality of pixel areas; a color filter layer arranged on the substrate to transmit incident light of a particular wavelength band; and a color conversion layer arranged on the color filter layer and including a plurality of quantum dots to convert the incident light into light of a particular wavelength band and to output the converted light, wherein the color conversion layer includes a dummy element that is apart from the display area and is arranged in the non-display area.