Electrochromic Layer for Dynamic Display Privacy
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Solution Overview
Problem
Conventional display devices with plug-in privacy protection films suffer from reduced transmittance, impaired display effects, increased thickness, and higher costs, which compromise privacy and user experience.
Innovation Solution
A display device incorporating an electrochromic device layer that switches between different transmittance modes based on an applied electrical field, allowing for higher transmittance in wide view angle mode and lower transmittance in narrow view angle mode for privacy protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a plug-in privacy protection film is used, then privacy protection is achieved, but transmittance of the display screen is lowered
Solution Approach 1:
The patent employs electrochromic devices that can dynamically change their optical parameters (transmittance) in response to electrical signals. The electrochromic device layer switches between different transmittance states (high transmittance for wide view angle mode, low transmittance for narrow view angle mode) to provide privacy protection without permanently reducing display quality.
Solution Approach 2:
The patent transforms the static privacy protection approach into a dynamic system. The electrochromic device layer can be switched between different transmittance modes based on user needs and viewing conditions, allowing the display to adapt between privacy protection mode and normal display mode seamlessly.
2Object-affected harmful factors
If a plug-in privacy protection film is used, then privacy protection is achieved, but display effect is influenced
Solution Approach 1:
The electrochromic device layer provides dynamic control over privacy protection. When in wide view angle mode, the electrochromic devices maintain high transmittance for optimal display effects. When privacy protection is needed, the system switches to narrow view angle mode with low transmittance, thus adapting privacy protection to viewing conditions rather than compromising display quality permanently.
Solution Approach 2:
The patent changes the optical parameters of the display screen dynamically through electrochromic devices. By controlling the transmittance parameter of the electrochromic layer, the system can provide privacy protection when needed while maintaining excellent display effects during normal usage, thus resolving the contradiction between privacy protection and display quality.
3Object-affected harmful factors
If a plug-in privacy protection film is used, then privacy protection is achieved, but total thickness is increased
Solution Approach 1:
The patent merges the privacy protection function with the display screen structure itself. The electrochromic device layer is integrated into the display device, combining the display function and privacy protection function into a single integrated system, eliminating the need for separate plug-in films and reducing overall thickness.
Solution Approach 2:
The electrochromic device layer serves multiple functions: it acts as both a display component and a privacy protection mechanism. By integrating privacy protection functionality into the display structure, the patent eliminates the need for additional separate privacy films, thereby reducing total thickness while maintaining privacy protection capabilities.
4Object-affected harmful factors
If a plug-in privacy protection film is used, then privacy protection is achieved, but use cost is raised
Solution Approach 1:
The patent combines the privacy protection function with the display screen manufacturing process. The electrochromic device layer is integrated into the display device structure, allowing privacy protection functionality to be built-in during manufacturing rather than requiring separate plug-in films, thus reducing overall manufacturing complexity and cost.
Solution Approach 2:
The electrochromic device layer provides multi-functionality, serving both as a display component and a privacy protection mechanism. This integration eliminates the need for separate privacy protection products, reducing the number of components and potentially lowering manufacturing and usage costs compared to multiple separate films.
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 electrochromic device layer enhances transmittance in wide view angle mode without affecting normal display and reduces viewing angle in narrow view angle mode for privacy protection, offering flexible mode switching and broader application scenarios.
Implementation Method 1
an electrochromic device layer disposed on a side surface of the encapsulation layer away from the light emitting device layer
Data Source
AI summary
The present invention discloses a display device and a manufacturing method thereof, the display device includes: an underlay substrate; a circuit layer disposed on a side surface of the underlay substrate; a light emitting device layer disposed on a side surface of the circuit layer away from the underlay substrate; an encapsulation layer covering a side surface of the light emitting device layer away from the circuit layer and at least one short side surface of the light emitting device layer; and an electrochromic device layer disposed on a side surface of the encapsulation layer away from the light emitting device layer.