Tiled Display Shared Color Conversion Layer for Seamless Panels
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Solution Overview
Problem
Existing display devices face challenges in improving external visibility and process productivity in tiled display devices.
Innovation Solution
A tiled display device comprising a first panel and a second panel with a shared layer containing a color conversion part that changes the wavelength of light, and includes a first color part, a second color part, and a third color part, with each part overlapping the panels in a plan view, and a bank structure enclosing emission areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If separate white panels are used for each display element, then display quality is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
Multiple white panels (PNL1, PNL2, PNL3) are merged into a single integrated panel structure that shares common components including the color conversion layer (CCL), electrode patterns (ETP), and encapsulation structures. This consolidation maintains high display quality while reducing manufacturing complexity and cost compared to producing and assembling separate white panels for each display element.
Solution Approach 2:
The shared white panel serves multiple functions simultaneously: it acts as the substrate for multiple display elements, provides common electrode patterns for driving multiple pixels, supports a shared color conversion layer, and offers unified encapsulation protection. This multi-functionality eliminates the need for separate specialized panels for each display element.
2Manufacturing precision
If separate color conversion layers are used for each display element, then color accuracy is improved, but manufacturing complexity increases
Solution Approach 1:
Multiple color conversion layers (CCL1, CCL2, CCL3) corresponding to different display elements are merged into a single integrated color conversion layer structure. This shared CCL maintains color accuracy for each display element while significantly simplifying manufacturing compared to producing and aligning separate color conversion layers for each element.
Solution Approach 2:
The shared color conversion layer acts as an intermediary between the common white panel and the individual display elements. It receives light from the white panel and converts it to the appropriate wavelengths for each display element, maintaining color accuracy without requiring separate color conversion components for each element.
3Reliability
If multiple separate panels are assembled, then display performance is improved, but assembly precision requirements increase
Solution Approach 1:
Multiple display elements are integrated into a single panel assembly rather than being assembled as separate panels. This approach maintains high display performance while reducing the number of assembly interfaces, thereby lowering the overall assembly precision requirements and reducing potential misalignment issues.
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
Enhances external visibility and improves process productivity by allowing for a wider display surface and efficient light emission with different colors, suitable for applications like outdoor billboards.
Implementation Method 1
a color conversion part (CCL)... The color conversion part (CCL) may change a wavelength of light provided from the first panel (PNL1) and the second panel (PNL2)
Data Source
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AI summary
A tiled display device (TDD) may include a first panel (PNL1) including a first display element layer (DPL1); a second panel (PNL2) including a second display element layer (DPL2); and a shared layer (100) including a color conversion part (CCL). The shared layer (100) may include a first portion and a second portion. The first portion may overlap with the first panel (PNL1) in a plan view. The second portion may overlap with the second panel (PNL2) in a plan view. The color conversion part (CCL) may change a wavelength of light provided from the first panel (PNL1) and the second panel (PNL2).