Dual Display Polarization Management for Reflective Panel Quality
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Solution Overview
Problem
Existing electronic devices with dual display panels, such as foldable notebooks, face challenges in enhancing the display quality of reflection-type liquid crystal display panels, which are limited by inefficient light utilization and polarization components.
Innovation Solution
The implementation of a configuration where the first display panel emits a large amount of P-polarization components, which are then absorbed by a polarizer on the second reflection-type display panel, optimizing the use of light for improved reflective display quality, and incorporating specific polarizer orientations and liquid crystal element layers to manage polarization and electrical fields effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a reflection-type liquid crystal display panel is used to reduce power consumption, then energy efficiency is improved, but display quality is deteriorated due to insufficient illumination and poor contrast
Solution Approach 1:
A polarizing plate is introduced as an intermediary component between the first display panel and the second reflection-type display panel. This polarizing plate converts the polarization state of light emitted from the first display panel, enabling efficient utilization of the light for illuminating the second display panel. This resolves the contradiction by adding a mediating element that improves illumination without increasing power consumption.
Solution Approach 2:
The patent changes the polarization parameter of light by configuring the first display panel to emit light with specific polarization components (P-polarization) and using a polarizing plate to convert S-polarization to P-polarization. This parameter change in light polarization enables the reflection-type display panel to achieve sufficient illumination and contrast while maintaining low power consumption operation.
2Device complexity
If light from the first display panel is directly used to illuminate the second display panel, then device complexity is reduced, but light utilization efficiency is insufficient leading to poor display quality
Solution Approach 1:
A polarizing plate is introduced as a simple intermediary component that efficiently converts the polarization state of light. This minimal addition enables the system to utilize light from the first display panel much more effectively for illuminating the second display panel, achieving high light utilization efficiency with minimal increase in device complexity.
Solution Approach 2:
By changing the polarization parameter of light through the polarizing plate, the system achieves efficient light utilization. The polarizing plate converts S-polarization components to P-polarization components, ensuring that the maximum amount of light from the first display panel can be effectively used to illuminate the second display panel, thereby reducing energy loss.
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 significantly enhances the display quality of the reflection-type panel by effectively utilizing light and managing polarization, resulting in improved contrast and illumination for the reflective display.
Implementation Method 1
the second display panel is a reflection-type display panel, and includes a polarizer disposed on the second display surface and configured to absorb S-polarization components of incident light
Implementation Method 2
the first display panel includes a liquid crystal element layer, and a circular polarizer disposed on the first display surface side of the organic EL element layer
Data Source
AI summary
An electronic device includes a first display panel including a first display surface, and a second display panel including a second display surface and configured to be disposed such that light emitted from the first display surface is incident on the second display surface. The first display panel is configured such that light emitted from the first display surface and incident on the second display surface includes a large amount of P-polarization components. The second display panel is a reflection-type display panel, and includes a polarizer disposed on the second display surface and configured to absorb S-polarization components of incident light.