Liquid Crystal Panel Electrode Layout for 3D Display Noise Reduction
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Solution Overview
Problem
Existing liquid crystal panels for 3D image display suffer from noise propagation between adjacent pixels due to large capacitance between pixel and common electrodes, affecting display quality without addressing this issue in existing technologies.
Innovation Solution
The liquid crystal panel design includes common electrodes adjacent to each other across an aperture, connected outside or inside the panel, with a flexible printed circuit, and a light-blocking component, to maintain the same signal across these electrodes, reducing noise propagation without increasing system load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a solid common electrode is used in liquid crystal panels, then the display area is maximized, but noise propagates from one pixel to adjacent pixels due to large capacitance between pixel and common electrodes
Solution Approach 1:
The common electrode is divided into multiple separate common electrodes positioned between adjacent pixel electrodes. This segmentation reduces the capacitance between pixel electrodes and common electrodes, thereby suppressing noise propagation while maintaining the overall display area through proper arrangement of the segmented electrodes.
Solution Approach 2:
A capacitance reduction layer (such as a hole filling layer or insulating layer) is introduced as an intermediary between the pixel electrode and the common electrode. This intermediary layer reduces the parasitic capacitance between them, preventing noise from propagating from one pixel to adjacent pixels while maintaining the structural integrity of the display.
2Object-generated harmful factors
If common electrodes are divided into separate electrodes between pixel electrodes, then noise propagation is suppressed, but the device structure becomes more complex
Solution Approach 1:
The common electrode is segmented into multiple separate electrodes positioned between adjacent pixel electrodes. This segmentation is achieved through standard photolithography and etching processes, and the segmented electrodes are connected through contact holes in the substrate, maintaining electrical connectivity while reducing noise propagation.
Solution Approach 2:
The segmented common electrodes serve multiple functions: they act as common electrodes for their respective pixel regions, provide noise isolation between pixels, and maintain the overall display functionality. The capacitance reduction layer also serves dual purposes by reducing parasitic capacitance and providing structural support.
3Object-generated harmful factors
If a capacitance reduction layer is added between pixel electrode and common electrode, then noise propagation is reduced, but manufacturing steps increase
Solution Approach 1:
A capacitance reduction layer (hole filling layer or insulating layer) is introduced as an intermediary between the pixel electrode and common electrode. This layer can be formed using standard deposition and patterning processes, and it effectively reduces parasitic capacitance to suppress noise propagation without requiring fundamentally new manufacturing techniques.
Solution Approach 2:
The dielectric properties and thickness of the capacitance reduction layer are optimized to achieve the desired capacitance reduction. By adjusting parameters such as material composition and layer thickness, the manufacturing process can be tuned to achieve noise suppression with minimal impact on manufacturing complexity.
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 design effectively reduces noise propagation between pixels, improving display quality without increasing system load, suitable for 3D image display applications.
Implementation Method 1
controls the amount of light transmitted through its liquid crystal panel by emitting light from the backlight and applying voltage to the liquid crystal layer to change the alignment of liquid crystal molecules
Implementation Method 2
a pair of electrodes and a liquid crystal layer between a pair of substrates, and controls the amount of light transmitted through its liquid crystal panel by emitting light from the backlight and applying voltage to the liquid crystal layer
Data Source
AI summary
Provided are a liquid crystal panel capable of sufficiently reducing noise without an increase in load on the system, and an active retarder for 3D image display and a display device each including the liquid crystal panel. The liquid crystal panel includes: pixels adjacent to one another; a pair of substrates; pixel electrodes corresponding to the respective pixels; common electrodes overlapping the respective pixel electrodes; a liquid crystal layer; and an input unit. The pixel electrodes, the common electrodes, and the liquid crystal layer are disposed between the pair of substrates. The common electrodes are adjacent to one another across an aperture in a plan view. The aperture overlaps a boundary between the pixel electrodes. The input unit is configured to input a same signal to the common electrodes.