Reflective Panel Light Control for Display Luminance
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Solution Overview
Problem
Display devices with layered panels face luminance deterioration due to the inclusion of reflective panels, which can cause issues with light transmission and reflection, affecting image quality and power consumption.
Innovation Solution
A display device configuration featuring a display panel with a phase delay plate and polarizing plate, combined with a reflective panel that uses charged particles and transparent electrodes to selectively transmit or reflect light, minimizing luminance loss and improving contrast by controlling the location of charged particles based on electric fields.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a reflective panel is included in the layered display device, then light reflection capability is improved, but luminance deteriorates due to light transmission issues
Solution Approach 1:
The display device is divided into distinct functional panels: a display panel for image generation and a separate reflective panel for light reflection. This segmentation allows each panel to optimize its specific function without compromising the other, resolving the contradiction between light reflection capability and luminance maintenance.
Solution Approach 2:
The reflective panel is positioned specifically above the display panel to provide localized light reflection enhancement. This local quality approach ensures that light reflection is improved in the reflective panel area while the display panel maintains its luminance characteristics, preventing overall luminance deterioration.
2Illumination intensity
If charged particles are used in the reflective panel, then light reflection is enhanced, but device complexity increases due to additional components
Solution Approach 1:
The reflective panel with charged particles is merged with the display panel to form an integrated layered display device. This combination allows the charged particles to be utilized efficiently for light reflection enhancement while sharing common structural elements and control mechanisms, thereby reducing overall device complexity despite the addition of functional components.
Solution Approach 2:
The reflective panel serves multiple functions: it reflects light to enhance display visibility, contains charged particles for electro-optical modulation, and integrates with the display panel structure. This multi-functionality reduces the need for separate components, thereby managing device complexity while achieving enhanced light reflection.
3Loss of energy
If transparent electrodes are used to control charged particles, then light transmission is improved, but manufacturing precision requirements increase
Solution Approach 1:
Transparent electrodes in the form of thin films are used in the reflective panel. These thin film electrodes provide sufficient electrical conductivity to control charged particles while maintaining high light transmission properties. The thin film structure reduces manufacturing complexity and precision requirements compared to bulk electrode materials.
Solution Approach 2:
The reflective panel employs composite material structures combining transparent electrode materials with charged particle suspensions. This composite approach allows the electrodes to provide both electrical functionality and optical transparency, reducing the need for separate components and simplifying manufacturing while maintaining light transmission.
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 effectively suppresses luminance deterioration and enhances image contrast by selectively managing light transmission and reflection, reducing power consumption and improving the lifespan of the display panel.
Implementation Method 1
charged particles in the space, the charged particles reflecting light
Implementation Method 2
The display panel may include a phase delay plate and a polarizing plate that are sequentially layered in the upward direction on a path through which the image is displayed
Implementation Method 3
The display panel may include a phase delay plate and a polarizing plate that are sequentially layered in the upward direction on a path through which the image is displayed
Implementation Method 4
The display panel may further include an organic light emitting element that emits light corresponding to a pixel area to form the image
Data Source
AI summary
A display device includes a display panel configured to display an image in an upward direction and a reflective panel on the display panel, the reflective panel configured to selectively transmit or reflect light with respect to an area corresponding to the image.