Display Substrate Data Compensation for Load Balancing
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Solution Overview
Problem
Current display technologies face challenges in achieving consistent load distribution and bezel reduction in display substrates, particularly in OLED and QLED displays, due to variations in pixel circuit loads and the need for data compensation.
Innovation Solution
The display substrate incorporates a design with data compensation units electrically connected to data lines, allowing for load compensation and bezel reduction by optimizing the arrangement of pixel circuits and data lines, including the use of data compensation units in different conductive layers and compensation electrode plates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data compensation units are added to balance data line loads, then display consistency is improved, but device complexity increases
Solution Approach 1:
The data compensation unit is nested within the existing pixel circuit structure, sharing the same substrate and integrating compensation functions without adding separate external components. The compensation transistor and capacitor are incorporated into the pixel circuit layout, allowing load balancing while maintaining structural compactness
Solution Approach 2:
The data compensation unit serves multiple functions: it compensates for data line load variations, maintains signal integrity across different display regions, and works with both first and second display regions that have different pixel circuit configurations. This multi-functional design improves display consistency without proportionally increasing complexity
2Area of stationary object
If data compensation units are integrated in the display region, then bezel size is reduced, but manufacturing precision requirements increase
Solution Approach 1:
Different pixel circuits in different display regions are designed with different active layer lengths to match their specific data line load requirements. The first display region uses pixel circuits with one active layer length while the second display region uses pixel circuits with a different active layer length, optimizing performance for each region's characteristics
Solution Approach 2:
The display region is divided into multiple sections with different pixel circuit configurations. By segmenting the display into first and second display regions with differentiated pixel circuit designs, the patent achieves precise load compensation for each segment while maintaining overall integration within the display area, reducing bezel requirements
3Reliability
If pixel circuits with different active layer lengths are used, then data line load balance is improved, but device complexity increases
Solution Approach 1:
Different pixel circuits in different display regions are designed with different active layer lengths to match their specific data line load requirements. The first display region uses pixel circuits with one active layer length while the second display region uses pixel circuits with a different active layer length, optimizing performance for each region's characteristics
Solution Approach 2:
The active layer length parameter of the pixel circuits is varied between different display regions to compensate for data line load differences. By changing this critical parameter, the patent achieves load balancing across the display without requiring fundamentally different circuit architectures
Data Source
AI summary
A display substrate including a display area is provided. The display area includes: a base, and a plurality of pixel circuits, a plurality of data lines and a plurality of data compensation units, wherein the pixel circuits, the data lines and the data compensation units are arranged on the base; and at least one of the plurality of data lines is electrically connected to the plurality of pixel circuits which are arranged in a first direction, and is further electrically connected to the at least one data compensation unit.