Transparent Display Transmittance Control for Sharper Images
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Solution Overview
Problem
Transparent display devices suffer from deteriorated sharpness and visibility due to light transmission, limiting their effectiveness in various applications.
Innovation Solution
A display device design that includes a first polarizing plate, a transmittance adjusting member with a liquid crystal layer and transparent electrodes, and a second polarizing plate, allowing for adjustable light transmittance without being limited by pixel size or arrangement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If light transmission is increased for transparency, then visibility of objects behind the display is improved, but image sharpness and visibility deteriorate
Solution Approach 1:
The patent applies a transmittance adjusting member with liquid crystal layers that can dynamically change the light transmittance of the transparent display device. By controlling the liquid crystal orientation through applied voltages, the display can switch between high transmittance mode (for viewing objects behind) and low transmittance mode (for displaying sharp images), resolving the contradiction between transparency and image quality
Solution Approach 2:
The patent changes the optical parameters of the display system by introducing phase films with specific retardation values and polarizing plates with controlled transmission axes. By adjusting the phase difference and polarization states, the system optimizes both light transmittance and image sharpness under different operating conditions
2Manufacturing precision
If transmittance adjusting member is added to control light, then image visibility is improved, but device complexity increases
Solution Approach 1:
The transmittance adjusting member serves multiple functions simultaneously: it controls light transmittance, maintains display transparency, and enables sharp image display. The liquid crystal layer and phase films work together to provide both switching capability and optical compensation, reducing the need for separate components and simplifying the overall structure
Solution Approach 2:
The patent nests the transmittance adjusting member within the existing display structure, placing liquid crystal layers and phase films between the polarizing plates and display panel. This nested arrangement integrates the transmittance control function without adding external bulky components, maintaining a compact and simple device structure
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
Enhances image sharpness and visibility while reducing power consumption by dynamically controlling light transmittance through the use of a transmittance adjusting member.
Implementation Method 1
a liquid crystal layer positioned on the first transparent electrode
Implementation Method 2
the transmittance adjusting member includes a first transparent electrode, a liquid crystal layer positioned on the first transparent electrode, and a second transparent electrode positioned on the liquid crystal layer
Implementation Method 3
the transmittance adjusting member includes a first phase film and a second phase film positioned on the first phase film
Implementation Method 4
a first polarizing plate, a transmittance adjusting member disposed on the first polarizing plate, and a second polarizing plate disposed on the transparent display panel
Data Source
AI summary
Discussed is a display device capable of enhancing the sharpness and visibility of images implemented on the display device by adjusting light transmittance. The display device can include a first polarizing plate, a transmittance adjusting member disposed on the first polarizing plate, a transparent display panel disposed on the transmittance adjusting member and having a light emitting element, and a second polarizing plate disposed on the transparent display panel.