Light Emitting Panel with Grooved Reflective Layer for Lower Light Loss
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Solution Overview
Problem
Existing display technologies for Mini/Micro LEDs suffer from significant light losses due to inefficiencies in light reflection and transmission between the reflective layer and optical film, leading to reduced light utilization rates.
Innovation Solution
A light emitting panel design featuring a reflective layer with grooves arranged in an array, where devices are located within the grooves, and a first optical film directly contacts at least partial areas of the reflective layer, minimizing light loss by optimizing the reflective layer's structure and contact with the optical film.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a reflective layer is used to improve light reflection, then light utilization rate is improved, but light loss occurs due to inefficient reflection and transmission between the reflective layer and optical film
Solution Approach 1:
The groove structure acts as an intermediary between the reflective layer and the optical film, enabling efficient light transfer. The groove allows light reflected from the reflective layer to be directed and coupled into the optical film, reducing light loss while maintaining high light utilization rate.
Solution Approach 2:
The groove structure with curved sidewalls helps to converge and redirect light rays. The curvature of the groove sidewalls optimizes the light path from the reflective layer to the optical film, improving both reflection efficiency and light transmission.
2Ease of manufacture
If devices are placed directly on the base, then device integration is simple, but light reflection and convergence efficiency is reduced
Solution Approach 1:
The base surface is segmented into groove structures that accommodate individual devices. Each groove acts as an independent light management unit, allowing devices to be integrated simply while each groove optimizes light reflection and convergence for its associated device.
3Ease of operation
If the optical film is positioned away from the reflective layer, then device placement is easier, but light contact and transmission efficiency decreases
Solution Approach 1:
The groove structure serves as an intermediary that bridges the optical film and reflective layer. It enables direct contact between these two components at critical light interaction points, maximizing light transmission efficiency while still allowing easy device placement in the groove areas.
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 significantly reduces light loss, enhancing light utilization efficiency by reflecting and converging light effectively, thereby improving the overall performance of Mini/Micro LED display products.
Implementation Method 1
a reflective layer located on a side of the base, and the reflective layer includes a plurality of grooves arranged in an array
Implementation Method 2
the sidewall of the groove is configured to reflect and converge light emitted by the device
Data Source
AI summary
The present application provides a light emitting panel, a preparation method thereof, and a light emitting apparatus, which relate to the field of display technology. The light emitting panel includes a base; a reflective layer located on a side of the base, the reflective layer includes a plurality of grooves arranged in an array; a plurality of devices located in the grooves and electrically connected to the base; a first optical film located on a side of the reflective layer facing away from the base, the orthographic projection of the first optical film on the base covers the orthographic projection of the reflective layer on the base, and at least partial areas of the reflective layer are in direct contact with the first optical film.