Transparent OLED Display Contrast Control via Liquid Crystal Module
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Solution Overview
Problem
Existing transparent OLED displays struggle with poor display contrast due to inability to effectively block background light, especially under intense conditions, which degrades user experience.
Innovation Solution
Incorporating a liquid crystal module and a second polarizing unit on the backlight side of the self-emitting display unit, along with a first polarizing unit on the viewing side, to adjust and control display contrast by polarizing and deflecting background light based on ambient light intensity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If OLED is used as self-emitting display unit for transparent display, then transmissivity is improved (up to 40%), but display contrast deteriorates due to inability to block background light
Solution Approach 1:
The display system is segmented into two independent modules: an OLED self-emitting display unit for transparency and a liquid crystal module for contrast control. This segmentation allows each module to perform its specialized function without compromising the other, resolving the contradiction between transmissivity and display contrast.
Solution Approach 2:
A liquid crystal module acts as an intermediary between the OLED display unit and the viewer. It selectively blocks or transmits background light based on display requirements, enabling the OLED to maintain high transmissivity while the liquid crystal module compensates for the lack of background light blocking capability.
2Reliability
If liquid crystal module is added to improve display contrast, then display contrast is improved, but device complexity increases
Solution Approach 1:
The liquid crystal module is merged with the OLED display unit into a single integrated transparent display system. The two modules are positioned in close proximity with corresponding pixel arrangements, creating a unified device that achieves improved display contrast without requiring separate complex control systems.
Solution Approach 2:
The liquid crystal module serves multiple functions: it blocks background light to improve contrast, maintains transparency when not in use, and can be controlled independently of the OLED display. This multi-functionality justifies the added structural complexity by providing versatile display capabilities.
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 display contrast, maintaining high transmissivity and brightness while effectively presenting a black state, thereby improving user experience.
Implementation Method 1
a first polarizing unit arranged on a viewing side of the self-emitting display unit, a liquid crystal module, and a second polarizing unit
Implementation Method 2
The liquid crystal module is configured to adjust a display contrast of the self-emitting display unit
Implementation Method 3
An Organic Light-Emitting Diode (OLED) plays a vital role in the field of next-generation flat display applications due to its advantages of self-emitting
Data Source
AI summary
A transparent display is disclosed. The display includes a self-emitting display unit, a first polarizing unit arranged on a viewing side of the self-emitting display unit, a liquid crystal module, and a second polarizing unit. The liquid crystal module and the second polarizing unit are arranged on a backlight side of the self-emitting display unit. In addition, the liquid crystal module is configured to adjust a display contrast of the self-emitting display unit.