Silver Alloy Reflective Layer for Heat-Resistant Display Panels
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Solution Overview
Problem
Silver-based reflective layers in display panels suffer from poor chemical resistance, heat resistance, and weather resistance, limiting their application due to high electrochemical mobility.
Innovation Solution
A reflective display panel with a silver alloy layer composed of silver, zinc, and antimony, where the silver alloy layer is deposited using a sputtering target with a specific atomic percentage composition, enhancing heat resistance and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If pure silver is used as the reflective layer, then high reflectivity is achieved, but chemical resistance, heat resistance, and weather resistance deteriorate
Solution Approach 1:
The patent applies composite materials by creating a silver alloy layer combining silver (96.5-99.9 at%), zinc (0.1-3.0 at%), and antimony (0.1-3.0 at%). This composite alloy structure maintains high reflectivity from the silver component while zinc and antimony provide improved chemical resistance, heat resistance, and weather resistance, resolving the contradiction between optical performance and environmental durability.
Solution Approach 2:
The patent applies parameter changes by precisely controlling the atomic percentages of silver, zinc, and antimony within specific ranges. By adjusting these compositional parameters, the alloy achieves optimal balance between reflectivity (maintained through high silver content) and resistance properties (enhanced through controlled zinc and antimony content), thereby resolving the technical contradiction.
2Illumination intensity
If pure silver is used as the reflective layer, then high reflectivity is achieved, but electrochemical mobility increases causing durability issues
Solution Approach 1:
The patent uses composite materials by forming a silver alloy where zinc and antimony components reduce the electrochemical mobility of silver. The specific composition ranges (silver 96.5-99.9 at%, zinc 0.1-3.0 at%, antimony 0.1-3.0 at%) create a stable alloy structure that maintains high reflectivity while significantly improving electrochemical stability and preventing degradation.
3Reliability
If silver alloy with additional elements is used, then heat resistance and weather resistance are improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies parameter changes by defining specific atomic percentage ranges for each element (silver 96.5-99.9 at%, zinc 0.1-3.0 at%, antimony 0.1-3.0 at%). These controlled parameter specifications enable consistent manufacturing with improved heat and weather resistance, while the clear range definitions help manage manufacturing complexity through standardized compositional guidelines.
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 silver alloy layer exhibits improved heat resistance and optical stability, maintaining reflectivity and durability even in harsh environments, thus addressing the limitations of pure silver reflective layers.
Implementation Method 1
A sputtering target in the disclosure is adapted to deposit the silver alloy layer
Data Source
AI summary
A reflective display panel including a pixel structure is provided. The pixel structure has a reflective area and includes an active device, an insulation layer, and a reflective layer. The insulation layer is located above the active device. The reflective layer is disposed on the insulation layer and located in the reflective area. The reflective layer includes a silver alloy layer. A material of the silver alloy layer include silver with an atomic percentage greater than 96.5%, zinc with an atomic percentage greater than or equal to 0.1% and less than or equal to 2.0%, and antimony with an atomic percentage greater than or equal to 0.1% and less than or equal to 1.5%. A sputtering target adapted to deposit the silver alloy layer is further provided. A material of the sputtering target include silver with the atomic percentage greater than 96.5%, zinc with the atomic percentage greater than or equal to 0.1% and less than or equal to 2.0%, and antimony with the atomic percentage greater than or equal to 0.1% and less than or equal to 1.5%.