Display Panel Data-Line Layering to Prevent Hole-Border Crosstalk
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Solution Overview
Problem
In display panels with AA Hole and DDL design, signal crosstalk occurs between data traces on the hole border, affecting the display effect due to the winding layout and doubled data traces.
Innovation Solution
The connection data lines for adjacent pixel column groups are located in different layers, with their first portions in the trace area overlapping in alternate columns, avoiding signal crosstalk and optimizing wiring space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If data traces around the hole border adopt a winding layout design with doubled data traces, then the display area can be increased, but signal crosstalk occurs between data traces affecting display quality
Solution Approach 1:
The patent applies multi-layer routing to separate data traces onto different layers, transforming a two-dimensional layout problem into a three-dimensional solution. Connection data lines are routed through different layers (first layer and second layer) to avoid crosstalk while maintaining the winding layout for display area coverage.
Solution Approach 2:
The patent segments the connection data lines into multiple separate traces distributed across different layers. Instead of having all data traces in a single plane, the connection data lines are divided and routed through different layers, with each layer containing a subset of the required connections, thereby reducing electromagnetic interference.
2Adaptability or versatility
If the number of data traces on the hole border is doubled for DDL design, then display functionality is enhanced, but signal crosstalk increases between adjacent data traces
Solution Approach 1:
The patent utilizes vertical layering to separate data traces that would otherwise be adjacent in a single layer. By routing connection data lines through different layers (first connection data lines in first layer, second connection data lines in second layer), the design maintains doubled data trace functionality while eliminating crosstalk through spatial separation in the third dimension.
Solution Approach 2:
The patent introduces intermediate structures such as via holes and insulating layers between data traces on different layers. These intermediary elements enable electrical connection between layers while providing electrical isolation to prevent crosstalk, acting as mediators that allow both connectivity and interference prevention.
3Area of stationary object
If data traces are routed in a winding pattern around the hole border, then display area coverage is improved, but wiring density increases causing signal interference
Solution Approach 1:
The patent resolves wiring density issues by distributing the winding layout across multiple layers. Connection data lines follow winding paths around the hole border as required for display coverage, but by placing different sets of connection data lines on different layers, the effective wiring density at any given location is reduced, preventing signal interference.
Data Source
AI summary
Provided are a display panel and a display device. The display panel includes: a first trace area; a first display area at least half-surrounding the first trace area; a plurality of connection data lines each including a first portion located in the first trace area and a second portion located in the first display area electrically connected to each other; and a plurality of pixel column groups located in the first display area, each pixel column group including at least two pixel columns, and each pixel column being electrically connected to two connection data lines; the plurality of pixel column groups including adjacent first and second pixel column groups, where the first portions of the first connection data lines corresponding to the first pixel column group and the first portions of the second connection data lines corresponding to the second pixel column group are located in different layers.