Piezoelectric Viewing Angle Control Layer for OLED Displays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display technologies, such as OLED and LCD, face challenges in dynamically adjusting the viewing angle to accommodate diverse usage environments, leading to suboptimal performance in terms of light output path control.
Innovation Solution
Incorporating a viewing angle control layer with piezoelectric elements and transparent elastomers that change shape based on control signals, allowing for the adjustment of light output paths to achieve either wide or narrow viewing angles by altering the convex or concave surface through which light passes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed viewing angle structure is used, then the device structure is simple, but the display cannot adapt to diverse usage environments
Solution Approach 1:
The patent applies the dynamics principle by making the viewing angle control layer deformable through piezoelectric elements. The layer transitions from a static structure to a dynamic one that can change its shape and light refraction properties in real-time, enabling the display to adapt to different viewing angle requirements while maintaining a relatively simple overall structure.
Solution Approach 2:
The patent implements parameter changes by using piezoelectric elements to alter the physical shape of the viewing angle control layer. By changing the curvature or angle of this layer through electrical actuation, the light refraction parameters are dynamically adjusted, allowing the display to optimize viewing angles for different usage environments without adding complex mechanical structures.
2Reliability
If the viewing angle control layer changes shape to control light output path, then the viewing angle is optimized, but the device complexity increases due to additional components
Solution Approach 1:
The patent replaces complex mechanical adjustment mechanisms with piezoelectric elements that use electrical fields to achieve shape changes in the viewing angle control layer. This substitution eliminates the need for motors, linkages, or other mechanical components, thereby improving reliability through fewer moving parts while minimizing the increase in device complexity.
Solution Approach 2:
The patent employs a flexible viewing angle control layer that can deform under the influence of piezoelectric elements. This thin-film approach allows for shape changes that control light output paths without requiring bulky mechanical structures, maintaining device compactness while achieving reliable viewing angle optimization.
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 solution enables dynamic control of light output paths, enhancing the display's adaptability to different usage environments by optimizing the viewing angle, thereby improving the display's performance and user experience.
Implementation Method 1
the viewing angle control layer may include piezoelectric elements of which the shape is changed based on the control signal
Data Source
AI summary
An organic light emitting display panel includes a first substrate, a second substrate arranged opposite to the first substrate, a display layer on a side of the first substrate facing the second substrate, and a viewing angle control layer on a side of the second substrate facing the first substrate, the viewing angle control layer configured to change an output path of light input from the display layer by changing a shape based on a control signal.