3D Display Shutter Panel Using Thin-Film Plastic Substrates
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Solution Overview
Problem
The high manufacturing cost of three-dimensional (3D) image display apparatus is attributed to the expensive glass substrates used in the shutter panel, which also affects the brightness and thickness of the display.
Innovation Solution
The use of thin-film substrates and a blue-phase liquid crystal layer in the shutter panel, along with a polarizing film to generate circularly polarized light, reduces manufacturing costs and thickness while maintaining image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If glass substrates are used in the shutter panel, then the structural strength and durability are improved, but the manufacturing cost increases significantly
Solution Approach 1:
The patent replaces expensive glass substrates with inexpensive plastic substrates in the shutter panel. While plastic is generally considered less durable than glass, the patent accepts this trade-off to dramatically reduce manufacturing costs, effectively using a cheaper material that suffices for the application requirements.
Solution Approach 2:
The patent changes the material parameter from glass to plastic substrates, fundamentally altering the cost structure. This material substitution maintains the functional requirements while reducing manufacturing costs, as plastic substrates are significantly cheaper than glass and can be manufactured more easily.
2Strength
If glass substrates are used in the shutter panel, then the structural durability is improved, but the thickness of the display apparatus increases
Solution Approach 1:
The patent uses thinner plastic substrates替代 thicker glass substrates. Plastic materials allow for thinner substrate designs while maintaining sufficient structural integrity for the shutter panel application, thereby reducing the overall thickness of the display apparatus.
3Illumination intensity
If conventional liquid crystal layers are used in the shutter panel, then the light transmittance control is achieved, but the response speed is insufficient
Solution Approach 1:
The patent changes the liquid crystal material parameter by using blue-phase liquid crystals instead of conventional nematic or smectic liquid crystals. This material parameter change enables faster response speeds while maintaining the ability to control light transmittance through electric field application.
Solution Approach 2:
The patent exploits the unique phase transition characteristics of blue-phase liquid crystals, which exhibit a chiral blue phase state that responds more rapidly to electric field changes compared to conventional liquid crystal phases, thereby achieving faster response speeds.
4Length of stationary object
If the cell gap between substrates is reduced to decrease thickness, then the overall device thickness is reduced, but the brightness of the display apparatus decreases
Solution Approach 1:
The patent changes the liquid crystal material to blue-phase liquid crystals, which have different optical properties that maintain higher light transmittance at smaller cell gaps. This material parameter change allows the system to achieve both reduced thickness and maintained brightness by optimizing the interaction between light and the liquid crystal layer at smaller distances.
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 lowers the manufacturing cost of the 3D image display apparatus, improves response speed, and prevents cross-talk, allowing for the production of thinner and more efficient 3D image displays.
Implementation Method 1
Directors of the liquid crystals are tilted by an electric field generated between the transparent electrodes, and thus the light transmittance of the liquid crystal layer is controlled
Implementation Method 2
Directors of the liquid crystals are tilted by an electric field generated between the transparent electrodes, and thus the light transmittance of the liquid crystal layer is controlled
Implementation Method 3
a polarizing film configured to generate a circularly polarized light
Data Source
AI summary
A three-dimensional image display apparatus includes a display panel configured to display an image and a shutter panel configured to separate the image into a left-eye image and a right-eye image. The shutter panel includes a first thin-film substrate disposed adjacent to the display panel, a second thin-film substrate facing the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate. The first substrate is disposed between the second substrate and the display panel.