Organic Light-Emitting Display Panel Clock Signal Distribution
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Solution Overview
Problem
Higher resolution organic light-emitting display devices experience significant delays in clock signals due to increased loads on clock signal lines, affecting the display effect.
Innovation Solution
The implementation of multiple types of clock signal lines, with at least one type having a number not less than 2, reduces the load on each clock signal line by distributing the shift registers across different lines, thereby decreasing signal delay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of shift register stages is increased to support higher resolution, then the display resolution is improved, but the load on clock signal lines increases causing significant signal delay
Solution Approach 1:
The patent divides the clock signal distribution into multiple parallel paths by introducing at least two different types of clock signal lines. Each type of clock signal line is electrically connected to different stages of the cascaded shift registers, segmenting the original single clock signal line into multiple lines. This segmentation reduces the load on each individual clock signal line, thereby reducing signal delay while supporting higher display resolutions with more shift register stages.
2Loss of time
If multiple types of clock signal lines are introduced to reduce load, then the clock signal delay is reduced, but the device complexity increases
Solution Approach 1:
The patent makes different stages of the shift registers multi-functional by connecting them to receive different types of clock signals. The shift register stages can process different clock signal types (first type and second type) and generate corresponding gate driving signals. This multi-functionality allows the system to distribute the clock signal load across multiple lines while maintaining a unified shift register structure, reducing signal delay without proportionally increasing overall device complexity.
Data Source
AI summary
Provided are an organic light-emitting display panel and an organic display device, the organic light-emitting display panel includes: a display region and at least one peripheral circuit region; the peripheral circuit region is provided with shift registers cascaded in stages and clock signal lines of at least two different types, the number of clock signal lines in at least one of the different types is not less than 2, clock signals of one type of the clock signal lines are the same, clock signals of different types of the clock signal lines are different; the clock signal lines each is electrically connected to a clock signal input terminal of one of the shift registers, the shift registers each is configured to output a gate driving signal according to the clock signal in the clock signal line electrically connected to the input terminal of one of the shift registers.