Display Panel Circuit Layout for Angular Bezel Transitions

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Solution Overview

Problem

Irregular display panels, such as those used in on-vehicle displays, face performance issues due to poor circuit unit arrangement at angular bends between panel edges, leading to differences in transistor performance and potential split screen phenomena.

Innovation Solution

The display panel features a first and second panel edge with a functional circuit in the bezel area, where the third circuit unit is inclined between the first and second circuit units, ensuring a uniform transition of the setting direction and reducing gaps between circuit units, thereby minimizing performance differences.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If circuit units are arranged in straight lines along panel edges, then manufacturing is simple, but performance differences and split screen phenomena occur at angular bends

Engineering Contradiction:
Improvecircuit unit arrangement simplicityVSAvoiddisplay performance uniformity
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The patent applies local quality by differentiating the arrangement of third circuit units from first and second circuit units. While first and second circuit units are arranged in straight lines along panel edges, the third circuit units at the angular bend are arranged in a curved path with a specific radius of curvature. This local differentiation ensures that circuit units at the critical bend position maintain uniform performance characteristics, preventing split screen phenomena while keeping the overall manufacturing process simple.

Inventive Principle:
Principle #3Local quality

2Adaptability or versatility

If panel edges are arranged at angular bends for irregular display design, then design versatility is improved, but circuit unit performance uniformity deteriorates

Engineering Contradiction:
Improvedisplay design diversityVSAvoidtransistor performance consistency
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent resolves the contradiction by transitioning from a one-dimensional straight-line arrangement to a two-dimensional curved arrangement at the angular bend. The third circuit units are positioned along a curved path with a specific radius of curvature that matches the angular bend geometry. This dimensional change allows the circuit units to follow the panel's irregular shape while maintaining uniform electrical characteristics and performance across all circuit units, thereby preserving reliability despite design versatility.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Stability of the object's composition

If third circuit units are arranged in inclined directions, then setting direction uniformity is improved, but device complexity increases

Engineering Contradiction:
Improvecircuit unit setting direction consistencyVSAvoidcircuit unit arrangement complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent applies spheroidality by arranging the third circuit units along a curved path with a specific radius of curvature at the angular bend between panel edges. This curved arrangement naturally provides a uniform transition of setting directions for the circuit units, ensuring that the inclined directions of adjacent third circuit units differ by a controlled angle. The curvature-based approach achieves directional uniformity while maintaining manufacturing feasibility, as the curved path can be implemented through standard photolithography masking processes without significantly increasing device complexity.

Inventive Principle:
Principle #14Spheroidality (Curvature)

Data Source

PatentUS12257902B2Display panel and display device
Publication Date: 2025.03.25 XIAMEN TIANMA MICRO ELECTRONICS
  • US12257902B2 patent drawing
  • US12257902B2 patent drawing
  • US12257902B2 patent drawing

AI summary

Display panel and display device are provided. Display panel has display area and bezel area and includes first and second panel edges connected and adjacent to each other and extending linearly in different directions, first functional circuit located in the bezel area and including first functional circuit units. First functional circuit units include first, second, and third circuit units. First circuit units are located at side of first panel edge and arranged linearly along first panel edge, second circuit units are located at side of second panel edge and arranged linearly along second panel edge, third circuit unit is located between first and second circuit units and close to position where first panel edge is connected to second panel edge. One third circuit unit is arranged in direction inclined to a direction in which one first circuit unit is arranged and direction in which one second circuit unit is arranged.