Floating Electrode Lens Panel for 3D Display Thickness
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Solution Overview
Problem
The existing lenticular type stereoscopic image display apparatus faces challenges with increased resistance and potential disconnection of electrode lines due to the high number of electrodes, which affects the thickness and reliability of the lens panel, making it difficult to enhance the response rate and manufacturing efficiency.
Innovation Solution
A display apparatus with a lens panel comprising a first and second substrate separated by a liquid crystal layer, featuring a plurality of electrodes with floating electrodes that receive voltages different from the main electrodes, allowing for a reduced cell gap and increased spacing between lines, thereby improving response rate and reliability, and using a Fresnel lens driving mechanism to refract light for 3D image display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the number of electrodes is increased to decrease lens panel thickness, then the lens panel thickness is reduced, but the resistance increases and disconnection may occur
Solution Approach 1:
The electrode structure is segmented into three types: first electrodes connected to driving circuits, second electrodes connected to driving circuits, and floating electrodes not connected to any driving circuit. This segmentation allows the lens panel to achieve the desired thickness reduction while maintaining reliability by reducing the total number of connected electrode lines through the floating electrode design.
Solution Approach 2:
The floating electrodes generate their required voltages through capacitive coupling with adjacent first and second electrodes, without requiring direct electrical connection to driving circuits. This self-service mechanism eliminates the need for additional electrode lines while maintaining the electrostatic lens function, thereby reducing resistance and disconnection risks.
2Length of stationary object
If the number of electrodes is increased to decrease lens panel thickness, then the lens panel thickness is reduced, but the manufacturing complexity increases
Solution Approach 1:
The electrode structure is divided into three distinct types with different connection configurations. This segmentation simplifies the overall design by clearly defining which electrodes need external connections (first and second electrodes) and which can be self-sufficient (floating electrodes), reducing manufacturing complexity despite the increased total number of electrodes.
Solution Approach 2:
The floating electrodes serve multiple functions: they contribute to the electrostatic lens field generation, reduce the overall electrode line count, and simplify the driving circuit configuration. This multi-functionality offsets the increased electrode count and reduces overall device complexity.
3Length of stationary object
If the distance between electrode lines is decreased to accommodate more electrodes, then the lens panel thickness is reduced, but the response rate decreases
Solution Approach 1:
By making floating electrodes self-sufficient through capacitive coupling, the patent reduces the total number of electrode lines requiring external connections. This reduction increases the effective distance between connected electrode lines, improving the response rate while maintaining the thin lens panel structure.
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 decreases the manufacturing cost and enhances manufacturing efficiency by reducing the number of bus and electrode lines, preventing disconnections, and allowing for easier manufacturing processes while maintaining high display quality.
Implementation Method 1
The lens panel refracts light in passing through the liquid crystal layer
Implementation Method 2
a liquid crystal layer disposed between the first substrate and the second substrate
Implementation Method 3
the voltages of the floating electrodes may be between a voltage applied to each of their respective first electrodes and a voltage applied to each of their respective second electrodes
Data Source
AI summary
A display apparatus includes a panel module displaying a 2-dimensional (2D) image or a 3-dimensional (3D) stereoscopic image, a lens panel disposed over the panel module and including a first substrate, a second substrate and a liquid crystal layer disposed between the first substrate and the second substrate, the first substrate including a plurality of first electrodes, a plurality of floating electrodes and a plurality of second electrodes, the floating electrodes partially overlapping with the first electrodes and being electrically floated, the second electrodes partially overlapping with the floating electrodes, and a light source module supplying light to the panel module.