Barrier Panel for 3D Display with Dynamic Light Control
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Solution Overview
Problem
Current 3D display devices using the parallax barrier method cannot switch between 2D and 3D modes effectively, leading to luminance non-uniformity and reduced brightness due to the inability to detect and block images correctly.
Innovation Solution
A barrier panel with a liquid crystal layer, barrier electrodes, and a diffraction unit that adjusts its block and transmission regions based on user movement, allowing for simultaneous 2D and 3D image display by selectively blocking or transmitting light through the application of electric fields and utilizing a polarization plate to enhance luminance and prevent non-uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a parallax barrier is disposed in front of the display panel to enable 3D display without glasses, then binocular disparity is achieved and three-dimensional effect is created, but luminance is lowered due to image blocking and 2D/3D conversion is impossible
Solution Approach 1:
The barrier panel uses a liquid crystal layer that can dynamically change its optical properties based on applied voltage. By controlling the liquid crystal molecules' alignment, the barrier can switch between blocking and transmitting light, enabling dynamic adjustment between 2D and 3D modes while optimizing luminance for each mode
Solution Approach 2:
The invention changes the optical parameters of the barrier panel by applying different voltages to the liquid crystal layer. This allows the barrier to transition between different states (blocking vs. transmitting light) and enables 2D/3D conversion by adjusting the liquid crystal's refractive index and molecular orientation based on the desired display mode
2Adaptability or versatility
If images are blocked by the parallax barrier to achieve 3D effect, then binocular disparity is created, but luminance non-uniformity occurs and overall brightness is reduced
Solution Approach 1:
The invention applies different optical properties to different regions of the barrier panel by selectively controlling the liquid crystal layer. The barrier electrodes create localized electric fields that affect only specific regions, allowing precise control over which areas block or transmit light, thereby maintaining luminance uniformity across the display surface
Solution Approach 2:
The liquid crystal layer acts as an intermediary between the display panel and the viewer. It mediates the light transmission by being controlled by the barrier electrodes, allowing smooth transition between blocking and transmitting states, which helps maintain uniform luminance distribution while achieving the desired 3D effect
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
Enables seamless switching between 2D and 3D modes while improving overall luminance and reducing luminance non-uniformity by diffracting light in the transmission regions, ensuring a consistent and enhanced viewing experience.
Implementation Method 1
a liquid crystal layer between the first substrate and the second substrate, the liquid crystal layer including a plurality of liquid crystal molecules aligned in a predetermined direction
Implementation Method 2
a diffraction unit in the barrier electrode to diffract the light transmitting therethrough
Implementation Method 3
a common electrode on the second substrate to apply an electric field to the liquid crystal layer together with the barrier electrode
Implementation Method 4
a polarization plate over the second substrate, an optical axis direction of the polarization plate being parallel to the alignment direction of the liquid crystal molecule to transmit an image through an area where the electric field is not applied
Data Source
AI summary
A barrier panel includes a first substrate and a second substrate having block region and transmission region; a liquid crystal layer between the first and second substrates, the liquid crystal layer including a plurality of liquid crystal molecules aligned in a predetermined direction; a plurality of barrier electrodes in the block region and the transmission region of the first substrate; a common electrode on the second substrate to apply an electric field to the liquid crystal layer with the plurality of barrier electrodes; a diffraction unit in the plurality of barrier electrodes to diffract the light transmitting therethrough; and a polarization plate over the second substrate, wherein an optical axis direction of the polarization plate is parallel to the alignment direction of the liquid crystal molecule to transmit an image through an area where the electric field is not applied.