Electroluminescence Panel as Rear Grating for Naked-Eye 3D Displays
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Solution Overview
Problem
Existing naked-eye 3D display devices require additional 3D gratings, which hinder the thinning and lightening of the devices, and often suffer from low contrast ratios and high crosstalk in 3D displays.
Innovation Solution
A 3D display device comprising a liquid crystal display panel and an electroluminescence display panel where the electroluminescence panel forms light emitting and black areas alternately in both row and column directions, serving as both a backlight and a rear 3D grating, eliminating the need for extra 3D gratings and enabling a thinner, lighter design with high contrast ratios and low crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional 3D gratings are added in front of the display panel to achieve naked-eye 3D display, then 3D display functionality is enabled, but the device becomes thicker and heavier
Solution Approach 1:
The patent merges the backlight module and the rear 3D grating into a single integrated structure. The electroluminescence display panel serves dual functions: providing backlight illumination and forming the rear grating for 3D display. This eliminates the need for separate additional 3D gratings, thereby reducing device weight while maintaining 3D functionality.
Solution Approach 2:
The electroluminescence display panel is designed to perform multiple functions simultaneously: it acts as both the backlight source and the rear grating structure for 3D display. This multi-functionality reduces the number of separate components needed, contributing to weight reduction while preserving adaptability for 3D display.
2Adaptability or versatility
If additional 3D gratings are added in front of the display panel to achieve naked-eye 3D display, then 3D display functionality is enabled, but the device becomes thicker
Solution Approach 1:
The patent merges the backlight module and the rear 3D grating into a single integrated structure. The electroluminescence display panel serves dual functions: providing backlight illumination and forming the rear grating for 3D display. This eliminates the need for separate additional 3D gratings, thereby reducing device thickness while maintaining 3D functionality.
Solution Approach 2:
The electroluminescence display panel is designed to perform multiple functions simultaneously: it acts as both the backlight source and the rear grating structure for 3D display. This multi-functionality reduces the number of separate components needed, contributing to reduced device thickness.
3Illumination intensity
If conventional backlight modules are used, then sufficient backlight is provided, but the device cannot achieve thin and light design
Solution Approach 1:
The patent merges the backlight module and the rear 3D grating into a single integrated electroluminescence display panel. This eliminates the need for a separate conventional backlight module, reducing device weight while maintaining sufficient backlight illumination through the electroluminescence panel's inherent light-emitting capability.
4Illumination intensity
If conventional backlight modules are used, then sufficient backlight is provided, but the device cannot achieve thin design
Solution Approach 1:
The patent merges the backlight module and the rear 3D grating into a single integrated electroluminescence display panel. This eliminates the need for a separate conventional backlight module, reducing device thickness while maintaining sufficient backlight illumination through the electroluminescence panel's inherent light-emitting capability.
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 solution allows for a thinned and lightened 3D display device with improved contrast ratios and reduced crosstalk, enabling stereoscopic vision through different gray level information displayed to each eye, while maintaining functionality for 2D displays and potentially adding touch control features.
Implementation Method 1
an electroluminescence display panel behind the liquid crystal display panel. The electroluminescence display panel includes a plurality of first areas and a plurality of second areas, the first areas and the second areas are closely arranged and alternately arranged
Implementation Method 2
A voltage difference between electrodes of upper and lower substrates of the switching liquid crystal display screen is controlled so that the liquid crystal molecules in the polymer liquid crystal layer are rotated, thereby producing opaque stripes, i.e. parallax barriers
Data Source
AI summary
A 3D display device and a method of driving the same are disclosed in the present disclosure. An electroluminescence display panel instead of a conventional backlight module is adopted to be arranged behind the liquid crystal display panel. In the 3D display mode, light emitting areas and black areas alternately arranged in both the row direction and the column direction are formed in the electroluminescent display panel, so that an abnormal grating structure is formed. In the 3D display mode, the first sub-pixels corresponding to the same light emitting area are controlled to display different gray level information so that the left and right eyes of a person located at two viewpoints receive an image of different gray level information. Therefore, stereoscopic vision is created and a naked-eye 3D display at the sub-pixel level is achieved.