Circular Display Substrate Circuit Layout Efficiency

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Conventional display devices with quadrangular substrates have inefficient circuit layouts in their peripheral areas, leading to increased resistive loads due to wiring length differences, which affect the display's efficiency and quality.

Innovation Solution

A circular display substrate with a circular pixel area and a driving portion in the peripheral area, featuring scan and data circuits with conductive patterns that extend perpendicularly to the boundary, reducing wiring length differences and improving circuit layout efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a quadrangular substrate with conventional circuit layout is used, then the display device structure is simple and easy to manufacture, but the circuit layout efficiency in the peripheral area is low and wiring length differences increase causing higher resistive loads

Engineering Contradiction:
Improvesubstrate structure simplicityVSAvoidcircuit layout efficiency
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The patent applies curvature by transitioning from a conventional quadrangular substrate to a circular substrate. This curved geometry allows the peripheral area to be uniformly distributed around the pixel area, enabling more efficient circuit layouts with reduced wiring length differences. The circular shape eliminates the corner regions in quadrangular substrates where wiring paths are unnecessarily long, thereby reducing resistive loads while maintaining manufacturing feasibility.

Inventive Principle:
Principle #14Spheroidality (Curvature)

2Adaptability or versatility

If the peripheral area is increased to accommodate driving circuits, then circuit layout flexibility improves, but wiring length differences increase leading to higher resistive loads

Engineering Contradiction:
Improvecircuit layout flexibilityVSAvoidresistive load
Core Design Contradiction:
Adaptability or versatilityVSLoss of energy

Solution Approach 1:

The patent implements equipotentiality by arranging the driving circuits in the peripheral area such that all connection points to the pixel area are equidistant from the boundary. This is achieved through the circular geometry where circuits are positioned at uniform radial distances, ensuring equal wiring lengths and thus equal electrical potential conditions. This eliminates potential differences and reduces resistive energy loss while maintaining the flexibility to accommodate various driving circuit configurations.

Inventive Principle:
Principle #12Equipotentiality

3Ease of manufacture

If conventional wiring patterns are used in the peripheral area, then manufacturing process is simple, but wiring length differences cause increased resistive loads affecting display quality

Engineering Contradiction:
Improvewiring pattern simplicityVSAvoiddisplay quality
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent applies asymmetry in a functional sense by positioning the driving circuits at specific locations in the peripheral area that are optimized for uniform distance to the pixel area. While the overall circular substrate maintains symmetry, the circuit placement uses asymmetric positioning relative to traditional quadrangular layouts, achieving uniform wiring lengths that reduce resistive loads and improve display quality without complicating the manufacturing process.

Inventive Principle:
Principle #4Asymmetry

Data Source

PatentUS11862063B2Display substrate and display device including the same
Publication Date: 2024.01.02 SAMSUNG DISPLAY CO LTD
  • US11862063B2 patent drawing
  • US11862063B2 patent drawing
  • US11862063B2 patent drawing

AI summary

A display substrate and a display device including the display substrate are disclosed. In one aspect, the display substrate includes a plurality of pixels formed in a substantially circular pixel area and a driving circuit formed in a peripheral area surrounding the pixel area and configured to drive the pixels. A boundary is formed between the pixel area and the peripheral area, and the boundary is substantially concentric with respect to an arc defining the substantially circular pixel area. The driving circuit comprises a conductive pattern having a first side which extends in a peripheral direction crossing the boundary.