V-gate Layout and Cross Point Node Pseudo-Random Distribution
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Solution Overview
Problem
Electronic display devices face undesirable visual effects due to coupling effects between voltage-gate lines and source lines, leading to reduced pixel values and visible lines in the display, especially when the gate driver IC and source driver IC are co-located on the same side of the display panel.
Innovation Solution
Positioning cross point nodes in a pseudo-random manner across the display panel to minimize the visibility of coupling effects, with each node spaced to avoid forming straight-line edges or clusters, and using multiple gate driver ICs to coordinate gate drive signals across different sections of the display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the gate driver IC and source driver IC are co-located on the same side of the display panel to reduce bezel size, then the bezel region size is reduced, but coupling effects between voltage-gate lines and source lines cause visible lines and pixel value distortions
Solution Approach 1:
The display panel is divided into multiple sections with different cross point node arrangements. Each section has its own gate driver IC controlling a specific region, allowing independent optimization of cross point patterns to break up and distribute coupling effects across the display area rather than concentrating them in one location.
Solution Approach 2:
Cross point nodes are positioned asymmetrically in a pseudo-random manner rather than in regular grid patterns. This asymmetric distribution prevents the formation of straight-line edges and clusters that would exacerbate coupling effects, making the distortions less visible to human observers.
2Ease of manufacture
If cross point nodes are positioned in a regular grid pattern, then the layout is simple and manufacturing is easier, but straight-line edges and clusters form that make coupling effects more visible
Solution Approach 1:
The cross point nodes are positioned asymmetrically using pseudo-random patterns instead of symmetric grid arrangements. This prevents the formation of straight-line edges and clusters that would make coupling effects visible, while still maintaining a systematic approach to positioning that facilitates manufacturing.
Solution Approach 2:
The positioning parameters of cross point nodes are changed from fixed regular intervals to variable pseudo-random coordinates. This parameter modification distributes the nodes in a way that avoids creating visible patterns while remaining manufacturable through programmed positioning systems.
3Device complexity
If cross point nodes are clustered in certain regions, then the wiring layout is simplified, but the coupling effects are concentrated and become more noticeable in those regions
Solution Approach 1:
The display is segmented into multiple sections, each with its own distributed cross point nodes. This segmentation prevents the concentration of coupling effects in any single region by ensuring that cross point nodes are spread out across the entire display area, with each section independently managed by its own gate driver IC.
Solution Approach 2:
Each section of the display has locally optimized cross point node positioning tailored to that specific region. The pseudo-random positioning ensures that each local area has an appropriate distribution of cross points without creating clusters, allowing each region to be optimized independently for minimizing visible coupling effects.
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 arrangement effectively reduces the visibility of undesired pixel value distortions, ensuring that the displayed image data is presented accurately without noticeable lines, by distributing the cross point nodes to break up potential patterns and clusters that could exacerbate coupling effects.
Implementation Method 1
due to the proximity between the parallel v-gate lines and the source lines, the pixels located at the cross point nodes may experience a coupling effect that may alter voltage signals received by the respective pixels via the respective source lines due to the voltage signals present on the v-gate lines
Data Source
AI summary
A display device may include a plurality of pixels, a plurality of source lines that may provide a plurality of data line signals to the plurality of pixels, a plurality of gate lines that may provide a plurality of gate signals to a plurality of switches associated with the plurality of pixels, and a plurality of voltage gate lines disposed parallel to the plurality of source lines and coupled to the plurality of gate lines at a plurality of cross point nodes. The plurality of cross point nodes are positioned in a pseudo random order across the display device.