Tiled Display Pixel Layout for Bezel-Less Color Conversion
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Solution Overview
Problem
Existing display devices face challenges in achieving a bezel-less design while maintaining high yield and efficient light emission, particularly in the integration of color conversion patterns and light-emitting elements.
Innovation Solution
A display device design incorporating a substrate with emission and non-emission areas, featuring a color conversion pattern in the emission area and a light-emitting element connected to a transistor, with a color filter and insulating layer to enhance light transmission, and a bezel-less structure achieved by separating transistors and signal lines from the emission area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If transistors and signal lines are integrated in the emission area, then device functionality is complete, but bezel-less design and light transmission are compromised
Solution Approach 1:
The substrate is divided into distinct emission area and non-emission area, with transistors and signal lines segregated to the non-emission area. This spatial segmentation allows the emission area to remain clear for light transmission, achieving bezel-less design while maintaining complete device functionality through proper functional zoning.
Solution Approach 2:
The patent utilizes vertical layering to separate different functional components. Transistors and signal lines are positioned in lower layers or dedicated non-emission zones, while the emission area remains optically clear. This dimensional separation resolves the conflict between functional integration and optical performance.
2Manufacturing precision
If color conversion patterns are added to convert wavelength bands, then color accuracy is improved, but manufacturing complexity and process difficulty increase
Solution Approach 1:
The patent employs quantum dot materials with precisely controlled size parameters to achieve wavelength conversion. By adjusting the size of quantum dots, different emission wavelengths are obtained, enabling accurate color conversion. This parameter-based approach provides a systematic method for achieving color accuracy while maintaining manufacturing feasibility through established colloidal quantum dot fabrication processes.
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 design improves yield and enables a bezel-less display with efficient light emission through color conversion, enhancing visual performance and reducing structural limitations.
Implementation Method 1
the color conversion pattern is configured to convert a wavelength band of light incident from the light emitting element
Data Source
AI summary
A display device includes a substrate including an emission area and a non-emission area, a pixel circuit layer above the substrate, and including a transistor and a signal line in the non-emission area, and a color conversion pattern in the emission area, a light emitting element above the color conversion pattern, and electrically connected to the transistor, an insulating layer covering the light emitting element, and a pad above the insulating layer, and electrically connected to the signal line, wherein the color conversion pattern is configured to convert a wavelength band of light incident from the light emitting element.