Liquid Crystal Barrier Panel Shielding and Orientation Switching
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Solution Overview
Problem
The existing liquid crystal barrier panel (LC barrier-panel) for stereoscopic image display devices is vulnerable to external electromagnetic noise and static electricity, which can cause malfunctions and breakdowns due to gaps between electrodes, especially when the display panel is rotated.
Innovation Solution
A LC barrier-panel with a counter electrode covering the entire display region, alternately arranged barrier pixels, and a drive portion that supplies specific drive signals to switch between vertical and horizontal stripe displays, while maintaining a constant voltage to shield electromagnetic noise and static electricity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If gaps are formed between electrodes in the LC barrier panel, then the manufacturing process is simplified and electrode alignment is easier, but electromagnetic noise and static electricity can enter through the gaps causing malfunctions
Solution Approach 1:
A sealant is introduced as an intermediary substance to fill the gaps between electrodes. The sealant serves as a mediator that maintains the beneficial gaps for manufacturing while blocking the harmful penetration of electromagnetic noise and static electricity, thus resolving the contradiction between ease of manufacture and reliability
2Adaptability or versatility
If the display panel is rotated to view both portrait and landscape images, then the adaptability to different orientations is improved, but the vertical stripe of the barrier panel rotates to become horizontal, causing loss of stereoscopic image functionality
Solution Approach 1:
The barrier panel's stripe orientation is made dynamic rather than fixed. The panel can rotate between vertical and horizontal orientations, allowing the system to adapt to different display orientations (portrait/landscape) while maintaining stereoscopic functionality through controlled rotation of the liquid crystal molecules within the panel
3Reliability
If a barrier panel is disposed on the display panel for stereoscopic image display, then the stereoscopic viewing capability is improved, but the panel becomes vulnerable to electromagnetic noise and static electricity interference
Solution Approach 1:
The sealant acts as a protective intermediary layer that fills the gaps between electrodes in the barrier panel. This intermediary substance blocks the penetration of electromagnetic noise and static electricity while preserving the panel's stereoscopic display functionality, thus resolving the vulnerability issue
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 effectively shields electromagnetic noise and static electricity, preventing malfunctions and ensuring stable stereoscopic image display in both portrait and landscape orientations by reducing electromagnetic noise radiation and allowing for variable barrier stripe structures.
Implementation Method 1
Liquid crystal 93 is filled in between a first substrate 91 and a second substrate 92
Implementation Method 2
an alternating voltage is applied to only the fourth electrode set 84 on the second substrate 92. Then, the first electrode set 81 and the second electrode set 82 on the first substrate 91 are connected to the ground (GND) so that a vertical stripe transparent region is formed
Implementation Method 3
the barrier panel is a shading mask of a vertical stripe having substantially the same pitch as the vertical lines of the display panel
Data Source
AI summary
An LC barrier panel of a stereoscopic image display device has a substrate on which first barrier pixels and second barrier pixels are alternately arranged in a vertical direction and on which the first barrier pixels and third barrier pixels are alternately arranged in a horizontal direction. On a counter substrate, a counter electrode is formed to cover the entire surface of the display region. The third barrier pixels and the counter electrode are supplied with the same drive signal while an effective voltage is applied between the counter electrode and the first and second barrier pixels to perform vertical stripe display. Alternatively, the second barrier pixels and the counter electrode are supplied with the same drive signal while an effective voltage is applied between the counter electrode and the first and third barrier pixels to perform horizontal stripe display.