Micro-LED Display Panel Double-Sided Emission
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Solution Overview
Problem
The high cost of double-sided display devices is due to the requirement of two separate display panels, which can be mitigated by achieving double-sided display in a single micro light-emitting diode (Micro-LED) display panel.
Innovation Solution
A Micro-LED display panel is designed with light-emitting elements arranged in a matrix, where first and second light-emitting elements have opposite emitting directions, allowing for double-sided display without the need for two separate panels, by stacking electrodes and semiconductor layers to direct light emission appropriately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two separate display panels are laminated back-to-back to achieve double-sided display, then double-sided display function is realized, but manufacturing cost increases
Solution Approach 1:
The light-emitting elements are segmented into two types: first light-emitting elements for emitting light in a first direction, and second light-emitting elements for emitting light in a second direction. This segmentation allows each element to be optimized for its specific emission direction, enabling double-sided display functionality within a single panel structure.
Solution Approach 2:
Different regions of the display panel have different light emission properties. The first light-emitting elements are configured to emit light primarily in the first direction, while the second light-emitting elements emit light primarily in the second direction. This local differentiation of emission characteristics enables the single panel to achieve double-sided display without requiring two complete separate panels.
2Ease of manufacture
If a single display panel is used for double-sided display, then manufacturing cost is reduced, but light emission directionality becomes complex
Solution Approach 1:
The light-emitting elements are divided into two distinct types with different emission directions. First light-emitting elements are designed to emit light in the first direction, while second light-emitting elements are designed to emit light in the second direction. This segmentation simplifies the overall design by using standardized element structures with predetermined emission characteristics.
Solution Approach 2:
Instead of attempting to make each light-emitting element emit light in all directions or using complex optical systems to redirect light, the invention inverts the approach by designing elements that emit light in specific opposite directions. This inversion simplifies the optical design while achieving the double-sided display function.
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 configuration enables cost-effective double-sided display in a single panel, improving luminous efficiency and reducing production costs while maintaining high resolution and low energy consumption.
Implementation Method 1
a micro light-emitting diode display panel, including a plurality of light-emitting elements arranged in a matrix, the plurality of light-emitting elements each including a first electrode, a semiconductor layer, and a second electrode
Implementation Method 2
the semiconductor layer includes a first semiconductor layer, an active layer, and a second semiconductor layer; the first semiconductor layer, the active layer, and the second semiconductor layer are sequentially stacked up along a direction from the first electrode to the second electrode
Data Source
AI summary
The present disclosure provides a Micro LED display panel and a display device, which can realize a double-sided display in a single display panel to save cost. The Micro LED display panel includes a plurality of light-emitting elements in a matrix. Each light-emitting element includes a first electrode, a second electrode, and a semiconductor layer, which are stacked up, and the semiconductor layer is sandwiched between the first and second electrodes. The semiconductor layer includes a first semiconductor layer, an active layer, and a second semiconductor layer, which are stacked up along a direction from the first electrode to the second electrode. The light-emitting elements include a plurality of first and second light-emitting elements, the first light-emitting elements have a first emitting direction from the first electrode to the second electrode, and the second light-emitting elements have a second emitting direction from the second electrode to the first electrode.