Micro LED and Reflective Display Panel Overlap
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Solution Overview
Problem
Reflective displays face challenges in adaptability and display quality due to reliance on external light sources, leading to poor performance in varying environmental conditions such as dim lighting or high directivity of environmental light.
Innovation Solution
A display apparatus combining a reflective display panel with a micro light-emitting diode panel, where the micro LED panel provides a light source and has a visible light transmittance greater than 50%, reducing light energy loss and enhancing display quality by acting as an auxiliary light source or display panel in different operational modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a reflective display panel is used to eliminate the need for a light source module, then the compactness and portability are improved, but the display quality and adaptability to environmental conditions deteriorate
Solution Approach 1:
The patent combines a reflective display panel and a transmissive display panel into a single integrated display apparatus. The reflective panel provides power-saving functionality in bright environments, while the transmissive panel ensures visibility in dim conditions. Both panels are positioned in front of the same liquid crystal layer, allowing the system to adapt to different environmental lighting conditions without compromising compactness.
Solution Approach 2:
The display apparatus is designed to perform multiple functions using a shared liquid crystal layer. The same liquid crystal layer can be driven in reflection mode for power saving and in transmission mode for visibility in low light. This multi-functional design eliminates the need for separate light sources while maintaining adaptability across different environmental conditions.
2Use of energy by stationary object
If a reflective display panel relies on external light sources, then the power consumption is reduced, but the display quality and image clarity deteriorate in dim lighting conditions
Solution Approach 1:
The display apparatus dynamically switches between reflection mode and transmission mode based on environmental lighting conditions. In bright environments, the reflective mode is activated for power saving. In dim conditions, the transmissive mode is activated to ensure adequate display quality. This dynamic adaptation resolves the contradiction between power consumption and display quality across different operating conditions.
3Illumination intensity
If the micro light-emitting diode panel has high light emission for auxiliary lighting, then the display quality in dim conditions is improved, but the light energy loss increases
Solution Approach 1:
The micro light-emitting diode panel serves dual purposes: it provides auxiliary illumination to improve display quality in dim conditions, and simultaneously acts as a light source for the transmissive display mode. By utilizing the same LED light for both illumination and display functions, the system reduces overall energy loss compared to using separate light sources.
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 combination increases operational adaptability and improves overall display quality by reducing light energy loss and enhancing light energy utilization, ensuring better image clarity across various environmental conditions.
Implementation Method 1
a micro light-emitting diode panel overlapped with the reflective display panel, where the micro LED panel provides a light source
Implementation Method 2
visible light transmittance of the micro light-emitting diode panel is higher than 50%, reducing light energy loss
Implementation Method 3
A reflective display displays an image by reflecting external environmental light
Data Source
AI summary
A display apparatus including a reflective display panel and a micro light-emitting diode panel is provided. The display apparatus has a display surface and the reflective display panel has a reflective surface. The micro light-emitting diode panel is overlapped with the reflective display panel and includes a driving circuit layer and a plurality of light-emitting diode devices. The driving circuit layer is positioned between the reflective display panel and the display surface. The micro light-emitting diode devices are electrically bonded to the driving circuit layer. The display surface and the reflective surface are respectively disposed on two opposite sides of the micro light-emitting diode devices and the transmittance of the micro light-emitting diode panel within a wavelength range of visible light is higher than 50%.