Dual-Surface Display Structure With Switchable Light Scattering
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Solution Overview
Problem
Current display devices with self-luminous light emitters have complex structures that are costly to manufacture and maintain, limiting their yield and functionality, particularly in switching between different display modes such as front, rear, and dual-surface displays.
Innovation Solution
A display device structure featuring a light emitter on a first light-transmissive substrate with a second light-transmissive substrate facing it, surrounded by light-shielding layers and light output sections that can switch between transmissive and scattering states, allowing for a thinner, simpler design capable of front, rear, and dual-surface displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a complex structure is used to enable multiple display modes, then functionality is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent implements dynamic switching between front, rear, and dual-surface display modes by making the light output sections switchable between transmissive and scattering states. This dynamic capability allows a single device structure to perform multiple display functions, resolving the contradiction between versatility and complexity by using controllable state changes rather than multiple fixed structures
Solution Approach 2:
The light output sections are designed to serve multiple functions: they can operate in transmissive state for front display mode, scattering state for rear display mode, and combinations thereof for dual-surface mode. This multi-functionality eliminates the need for separate structures for each display mode, reducing overall device complexity while maintaining versatility
2Adaptability or versatility
If a complex structure with multiple layers is used to achieve display functionality, then display mode versatility is improved, but manufacturing cost and difficulty increase
Solution Approach 1:
The patent divides the display device into distinct functional layers: first and second light-transmissive substrates, light-shielding layers, and switchable light output sections. This segmentation allows each component to be optimized and manufactured independently, then assembled together, simplifying the overall manufacturing process while enabling complex display mode switching functionality
Solution Approach 2:
The switchable light output sections use controllable scattering/transmissive states to achieve multiple display modes without requiring multiple physical layers for each mode. This dynamic approach reduces the number of manufacturing steps and layers compared to static multi-mode designs, improving ease of manufacture and yield
3Manufacturing precision
If light-shielding layers are added to control light emission, then display precision is improved, but device complexity increases
Solution Approach 1:
The light-shielding layers are positioned specifically around the light emitters and light output sections where light control is needed, rather than covering the entire device. This localized approach provides precise light emission control for display functionality while minimizing the overall structural complexity and material usage
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 structure enables efficient light emission control, allowing for high-functional displays that can be manufactured at low cost with high yield, supporting multiple display modes and efficient light reflection and scattering for improved light extraction efficiency.
Implementation Method 1
a first light output section between the first light-shielding layer and the first portion and switchable between a transmissive state and a scattering state
Data Source
AI summary
A display device includes a light emitter located on a first light-transmissive substrate, a second light-transmissive substrate facing the first light-transmissive substrate, a first light-shielding layer located on the first light-transmissive substrate and located away from the light emitter, a second light-shielding layer located on the second light-transmissive substrate and located away from a first portion facing the first light-shielding layer, a first light output section between the first light-shielding layer and the first portion and switchable between a transmissive state and a scattering state, and a second light output section between the second light-shielding layer and a second portion located on the first light-transmissive substrate and facing the second light-shielding layer. The second light output section is switchable between the transmissive state and the scattering state.