OLED-TN Display with Wave Plate Backlight
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Solution Overview
Problem
When an OLED is used with a TN panel, it loses display contrast and color saturation, despite providing a backlight source, which affects user experience and power consumption.
Innovation Solution
A display apparatus comprising an OLED panel and a TN panel with a wave plate added between them, where the OLED's metal layer serves as a backlight for the TN panel, enhancing contrast and reducing stray light reflection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If the OLED is used together with the TN panel to provide a backlight source, then the TN panel can be driven, but the OLED loses display contrast and color saturation
Solution Approach 1:
The display system is segmented into two independent display panels (OLED and TN) that can operate separately or together. The OLED panel can function as both a display and a backlight source, while the TN panel can be independently controlled. This segmentation allows the system to switch between different operating modes: OLED-only display, TN-only display (using OLED as backlight), or combined display, thereby resolving the contradiction between providing backlight and maintaining display quality.
Solution Approach 2:
The system implements dynamic switching between different display modes based on operational requirements. A control unit determines whether to display on the OLED panel alone, the TN panel alone (with OLED as backlight), or both panels simultaneously. This dynamic adaptability allows the system to optimize between power consumption, display quality, and backlight provision depending on the specific use case.
2Use of energy by moving object
If the OLED serves as backlight for the TN panel, then power consumption is reduced, but reflected stray light increases affecting display quality
Solution Approach 1:
A wave plate is introduced as an intermediary component between the OLED panel and the TN panel. This wave plate serves as a mediator that modifies the polarization state of light, reducing reflected stray light while allowing the OLED to function as an effective backlight source for the TN panel. The wave plate enables the system to achieve both low power consumption and good display quality by filtering harmful reflections.
3Manufacturing precision
If a wave plate is added between the display panels, then stray light reflection is reduced, but device complexity increases
Solution Approach 1:
The wave plate modifies the optical parameters (polarization state) of light passing between the OLED and TN panels. By changing the polarization parameters of the light, the wave plate effectively reduces stray light reflection and improves display contrast. This parameter-based solution achieves improved display quality without requiring complex structural modifications to the panel assembly.
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 maintains display contrast and color saturation while reducing power consumption, improving user experience and product competitiveness without significant production cost increases.
Implementation Method 1
The liquid crystal display panel includes: a wave plate, a linear polarizer, a bottom substrate, a liquid crystal layer and an upper substrate which are stacked successively
Implementation Method 2
An organic light-emitting diode (OLED) is also called as an organic electroluminescence display or organic light-emitting semiconductor
Data Source
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AI summary
The present disclosure provides a display apparatus. The display apparatus includes: an organic light-emitting display panel and a liquid crystal display panel disposed on a light-emitting side of the organic light-emitting display panel. The liquid crystal display panel includes: a wave plate, a linear polarizer, a bottom substrate, a liquid crystal layer and an upper substrate which are stacked successively. The bottom substrate is a transparent substrate. The organic light-emitting display panel includes a metal layer; and the metal layer serves as a backlight source of the liquid crystal display panel.