Reflective Light-Emitting Display with Moth-Eye Anti-Reflection
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Solution Overview
Problem
Conventional liquid crystal display devices face challenges in providing a highly convenient and reliable solution for displaying images, especially in bright environments, due to limitations in light management and reflection reduction.
Innovation Solution
A display device comprising a display panel with a control portion that generates and supplies first and second data to a pixel, where the first display element is reflective and the second is light-emitting, with an optical element directing light to enhance image brightness and reduce external light reflection, and a moth-eye structure on the surface to minimize surface reflection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light-emitting display element is used, then image visibility in dark environments is improved, but external light reflection increases in bright environments
Solution Approach 1:
The display element is divided into two separate elements: a light-emitting display element for dark environments and a reflective display element for bright environments. Each element is independently controlled by separate pixel circuits, allowing the system to segment the display function to optimize performance under different lighting conditions without the harmful reflection issue affecting the entire display.
Solution Approach 2:
The display device dynamically switches between light-emitting and reflective display modes based on ambient light conditions. The control portion detects environmental light levels and automatically activates the appropriate display element type, making the display adaptive to changing conditions and eliminating the static trade-off between brightness and reflection.
2Use of energy by moving object
If a reflective display element is used, then power consumption is reduced, but image brightness is insufficient in dark environments
Solution Approach 1:
The display is segmented into light-emitting and reflective regions with independent pixel circuits. The reflective display element handles power-efficient display in bright conditions, while the light-emitting display element provides sufficient brightness in dark conditions when activated by the control portion based on ambient light detection.
Solution Approach 2:
The display device achieves multi-functionality by integrating both light-emitting and reflective display capabilities in a single device. The control portion manages both display element types, allowing the system to universally handle various lighting conditions while optimizing power consumption and image brightness for each specific scenario.
3Productivity
If optical elements are added to direct light, then light management efficiency is improved, but device complexity increases
Solution Approach 1:
The optical elements are merged with the display element structure itself, with the light-emitting display element and reflective display element integrated into a unified display panel architecture. The control portion coordinates both elements, merging control functions to manage light efficiently without requiring separate complex control systems for each display type.
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 solution provides a novel display device that is highly convenient and reliable, offering improved image brightness and reduced reflection, enabling effective light management and enhanced visibility in bright conditions.
Implementation Method 1
The first region has a function of directing light which enters a region overlapping with the second display element to the first display element
Implementation Method 2
a moth-eye structure on the surface to minimize surface reflection
Data Source
AI summary
A display device includes a display panel and a control portion. The control portion has a function of receiving image data, and a function of generating and supplying first data and second data on the basis of the image data. The display panel includes a pixel and an optical element. The pixel includes a first display element and a second display element. The second display element includes a region adjacent to the first display element. The optical element includes a first region overlapping with the second display element. The first region has a function of directing light which enters a region overlapping with the second display element to the first display element. The first display element is a reflective display element. The second display element is a light-emitting element.