Semi-transparent Reflective Layers in Mirror Display Assembly
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Solution Overview
Problem
Mirror display devices face a poor reflection effect when used in reflection mode, as existing technologies fail to effectively manage light polarization and transmission, impacting the clarity and effectiveness of the reflection function.
Innovation Solution
A display assembly comprising polarizers, liquid crystal panels, and semi-transparent reflective layers is used, where the layers are strategically arranged to control light polarization and transmission, enhancing reflectivity by ensuring that light is appropriately filtered and reflected, with the semi-transparent reflective layers integrated with the polarizers to improve reflectivity and maintain display functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a mirror display device uses conventional display structures without specialized reflective layers, then the device structure remains simple, but the reflection effect is poor and clarity is insufficient
Solution Approach 1:
The patent divides the display structure into multiple functional layers: a first liquid crystal panel for display function, a second liquid crystal panel as light-transmitting control panel, and semi-transparent reflective layers positioned between them. This segmentation allows each layer to perform its specific function optimally, achieving clear reflection while maintaining display capability.
Solution Approach 2:
The semi-transparent reflective layers are integrated within the stacked structure of the liquid crystal panels and polarizers. The reflective layers are positioned between the first and second liquid crystal panels, nesting them within the overall display assembly structure. This nested configuration enables the reflection function to be embedded within the existing display structure without requiring a completely separate system.
2Reliability
If the device uses conventional polarizer arrangements without optimized angles, then the manufacturing process is simpler, but light transmission and reflection control are insufficient
Solution Approach 1:
The patent specifies precise angular parameters for the polarizers: the transmission axis of the first polarizer is at 0 degrees, the second polarizer is at 45 degrees, and the third polarizer is at 90 degrees. These specific parameter values enable optimal light transmission and reflection control, ensuring reliable performance while maintaining manufacturability through standardized angular configurations.
3Manufacturing precision
If the semi-transparent reflective layers have high reflectivity, then the reflection effect improves, but light transmission to the display panel is reduced
Solution Approach 1:
The patent employs semi-transparent reflective layers with specific optical properties that provide localized reflection enhancement. The layers are positioned at specific locations between the liquid crystal panels and are designed to reflect light in the reflection mode while allowing sufficient transmission for display mode. This local quality approach ensures that reflection quality is improved without excessively compromising overall 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
The solution achieves a reflectivity range of 40% to 70% during reflection, providing a clear and effective mirror-like reflection while maintaining display functionality, with improved imaging quality and reduced influence from the backlight source.
Implementation Method 1
a first semi-transparent reflective layer and a second semi-transparent reflective layer located on two sides of the light-transmitting control panel, respectively... light reflected by the second semi-transparent reflective layer faces the third polarizer... a reflectivity of the first semi-transparent reflective layer toward the third polarizer and a reflectivity the first semi-transparent reflective layer toward the first polarizer are each not less than 30%
Implementation Method 2
a first polarizer, a first liquid crystal panel, a second polarizer, a second liquid crystal panel and a third polarizer laminated one on another sequentially... a difference between an angle of a transmission axis of the first polarizer and an angle of a transmission axis of the second polarizer is 90 degrees, and the angle of the transmission axis of the first polarizer and an angle of a transmission axis of the third polarizer are the same
Implementation Method 3
a first liquid crystal panel, a second liquid crystal panel... one of the first liquid crystal panel and the second liquid crystal panel is a display panel, and the other is a light-transmitting control panel... controlling a region, corresponding to the target display region, of the light-transmitting control panel to keep light in an original polarization state
Data Source
AI summary
The present disclosure provides a display assembly, a display device and a method for controlling the display device. The display assembly includes a first polarizer, a first liquid crystal panel, a second polarizer, a second liquid crystal panel and a third polarizer laminated one on another sequentially. One of the first liquid crystal panel and the second liquid crystal panel is a display panel, and the other is a light-transmitting control panel. The display assembly further includes a first semi-transparent reflective layer and a second semi-transparent reflective layer located on two sides of the light-transmitting control panel, respectively.