Electroluminescent Panel 3D Display Thickness Reduction
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Solution Overview
Problem
Existing naked eye three-dimensional display devices are not thin and light due to the need for additional 3D gratings, which hinders their design and functionality.
Innovation Solution
A three-dimensional display device comprising a liquid crystal display panel and an electroluminescent display panel, where the electroluminescent panel forms light emitting and black areas alternately, replacing conventional backlighting to create a special grating structure that allows for thin and light design, and enables gray scale information control for stereoscopic vision without additional front gratings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional 3D gratings are added in front of the liquid crystal display panel to enable parallax barrier, then three-dimensional display function is achieved, but device thickness increases and thinness is compromised
Solution Approach 1:
The patent merges the backlight unit and the parallax barrier function into a single integrated structure. The electroluminescent display panel serves dual purposes: providing backlight illumination and creating the parallax barrier effect through selectively arranged light-emitting and non-light-emitting regions. This eliminates the need for separate additional 3D gratings in front of the display panel, thereby achieving thinness while maintaining 3D display functionality.
Solution Approach 2:
The electroluminescent display panel is designed to perform multiple functions simultaneously: it acts as both the backlight source and the parallax barrier component. By integrating these two functions into one panel, the patent reduces the overall device thickness while enabling both illumination and three-dimensional display capabilities without requiring separate dedicated components.
2Length of stationary object
If electroluminescent display panel is used to replace conventional backlight, then device thickness is reduced and thinness is achieved, but additional 3D grating structure is still needed
Solution Approach 1:
The patent combines the backlight unit and the parallax barrier function into a single integrated structure. The electroluminescent display panel serves dual purposes: providing backlight illumination and creating the parallax barrier effect through selectively arranged light-emitting and non-light-emitting regions. This eliminates the need for separate additional 3D gratings in front of the display panel, thereby achieving thinness while maintaining 3D display functionality.
3Adaptability or versatility
If liquid crystal screen switch is used to control parallax barrier, then three-dimensional display mode is achieved, but device complexity increases due to additional control mechanisms
Solution Approach 1:
The electroluminescent display panel inherently provides the parallax barrier function through its selective light emission patterns without requiring external liquid crystal switches or additional control mechanisms. The panel's own light-emitting and non-light-emitting regions automatically create the necessary optical barriers, simplifying the overall device structure and reducing control complexity while maintaining 3D display 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 results in a light and thin three-dimensional display device with low crosstalk, enabling naked eye 3D display at sub-pixel level by controlling gray scales for different viewpoints, and allowing for additional features like touch functionality.
Implementation Method 1
The electroluminescent display panel comprises a plurality of first areas and a plurality of second areas. The plurality of first areas and the plurality of second areas are arranged in array and arranged alternately in row direction and column direction. Under a three-dimensional display mode, the plurality of first areas are light emitting areas, and the plurality of second areas are black areas.
Implementation Method 2
By controlling the voltage difference between the electrodes of the upper and lower substrates in the switch liquid crystal screen, the liquid crystal molecules in the high molecule liquid crystal layer are rotated to form opaque stripes, i.e., parallax barrier.
Data Source
AI summary
Embodiments of the present disclosure disclose a three-dimensional display device and a driving method thereof. Under the three-dimensional display mode, a plurality of light emitting areas and a plurality of black areas arranged alternately in row direction and column direction are formed in the electroluminescent display panel, and the light emitting area comprises repeatedly arranged R light emitting areas, G light emitting areas, B light emitting areas and X light emitting areas. Under the three-dimensional display mode, by controlling first sub-pixels corresponding to the same light emitting area for providing gray scale information of different viewpoint images to display different gray scale information, the left and right eyes of a person can receive images with different gray scale information when being located at two viewpoints respectively, so as to generate stereoscopic vision and realize naked eye 3D display in a sub-pixel level.