Micro LED Display Panel Reflective Layer With Non-Overlapping Electrodes
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Solution Overview
Problem
Micro LED display panels face challenges in achieving high light-emitting efficiency due to the uniform light emission in all directions, requiring a special design to focus light towards the light-emitting side while maintaining normal panel function.
Innovation Solution
A display panel structure is designed with a base substrate, light-emitting elements, electrodes, a reflective layer, and voltage signal lines, where the reflective layer covers the light-emitting elements on the backlight side to reflect light towards the emission side, and extension parts of the electrodes are connected to the voltage signal lines without overlapping the reflective layer to ensure proper voltage signal input.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a reflective layer is added to improve light-emitting efficiency, then light is reflected toward the light-emitting side, but the structure becomes more complex and may interfere with electrode connections
Solution Approach 1:
The reflective layer is integrated with the base substrate to form a unified structure, eliminating the need for separate reflective components and reducing overall structural complexity while maintaining light reflection functionality
Solution Approach 2:
The base substrate serves dual functions: as the structural foundation of the display panel and as the reflective layer for redirecting light, thereby combining multiple functions into a single component and reducing device complexity
2Productivity
If the reflective layer covers the entire light-emitting element, then light reflection is maximized, but electrode connections are blocked
Solution Approach 1:
The reflective layer is segmented into multiple regions: a first reflective region that covers the light-emitting element for maximum light reflection, and a second reflective region with openings that allow electrode connections to pass through while maintaining reflection functionality in other areas
Solution Approach 2:
Different regions of the reflective layer have different properties: the first reflective region provides full coverage for optimal light reflection, while the second reflective region contains openings specifically positioned to allow electrode connections, creating local variations in reflectivity to satisfy different functional requirements
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 enhances light-emitting efficiency by effectively reflecting light towards the emission side while ensuring the normal operation of the electrodes, thereby improving the overall performance of the micro LED display panel.
Implementation Method 1
the first reflective layer covers the light-emitting element so that the light emitted by the light-emitting element to the backlight side may be reflected toward a light-emitting side
Data Source
AI summary
Provided are display panel and display device. Display panel includes base substrate; light-emitting element located on base substrate; first electrode and second electrode both electrically connected to light-emitting element, both located on side of light-emitting element facing base substrate or on side of light-emitting element facing away from base substrate and both providing voltage signals for light-emitting element; first reflective layer located on side of light-emitting element facing base substrate, and with direction perpendicular to base substrate as projection direction, first reflective layer covering light-emitting element; and voltage signal line located on side of light-emitting element facing base substrate. First electrode and second electrode respectively include first extension part and second extension part, at least one of which is connected to voltage signal line and does not overlap first reflective layer. First electrode and second electrode normally receive voltage signals, and light-emitting efficiency of display panel is improved.