3D Display Device Electrochromic Grating Thickness Reduction
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Solution Overview
Problem
Current naked-eye 3D display technologies, particularly parallax barrier type, suffer from high light transmittance loss and increased module thickness due to the need for a liquid crystal grating on the display panel.
Innovation Solution
A 3D display device with a 3D grating comprising an electrochromic layer of spaced electrochromic strip bodies that change between light-shielding and light-transmitting states when voltage is applied, eliminating the need for an underlayer base and reducing overall thickness and light transmittance loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a liquid crystal grating is overlapped on the display panel to achieve naked-eye 3D display, then the 3D display effect is achieved, but the overall thickness of the module increases and light transmittance loss increases by about 20%
Solution Approach 1:
The invention extracts and removes the underlayer base that is traditionally required to support the liquid crystal grating. By directly disposing the grating on the display panel, the unnecessary base layer is eliminated, reducing module thickness while maintaining the 3D display function.
Solution Approach 2:
The invention merges the grating structure directly with the display panel by eliminating the intermediate underlayer base. This integration reduces the number of separate components and overall module thickness while preserving the naked-eye 3D display capability.
2Reliability
If a liquid crystal grating is overlapped on the display panel to achieve naked-eye 3D display, then the 3D display effect is achieved, but light transmittance loss increases by about 20%
Solution Approach 1:
The invention extracts and removes the underlayer base that causes additional light transmittance loss. By eliminating this intermediate layer, the optical path is simplified and light transmission efficiency is improved while maintaining the necessary 3D display function.
3Stability of the object's composition
If an underlayer base is used to support the 3D grating, then the grating structure is stable, but the overall module thickness increases
Solution Approach 1:
The invention removes the underlayer base that was providing structural support. The grating is redesigned to be directly supported by the display panel, eliminating the need for the additional base layer and reducing overall thickness.
Solution Approach 2:
The display panel serves multiple functions: it acts as both the image display surface and the structural support base for the grating. This multi-functionality eliminates the need for a separate underlayer base, reducing thickness while maintaining stability.
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 achieves a reduced module thickness and lower light transmittance loss while maintaining the 3D display effect, allowing for efficient 2D/3D switching with improved optical performance.
Implementation Method 1
the electrochromic layer comprises a plurality of electrochromic strip bodies spaced apart from each other with an equal interval, and when a voltage is applied to each of the plurality of electrochromic strip bodies, a change between a light-shielding state and a light-transmitting state is achieved
Data Source
AI summary
An embodiment of the present invention provides a three-dimensional (3D) display device. The 3D display device comprises: a display panel, configured to display an image and comprising a plurality of pixels; and a 3D grating, disposed at a light-emitting side of the display panel and comprising an electrochromic layer, wherein the electrochromic layer comprises a plurality of electrochromic strip bodies spaced apart from each other with an equal interval, and when a voltage is applied to each of the plurality of electrochromic strip bodies, a change between a light-shielding state and a light-transmitting state is achieved.