Alternating P-N Stage Driving Circuit for Stable Signal Output

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Solution Overview

Problem

Existing driving circuits face challenges in achieving a small size while ensuring stable output signal transmission, particularly in display apparatus applications.

Innovation Solution

The proposed driving circuit incorporates a pair of first and second stages alternately arranged, each comprising specific transistors and inverters configured to manage clock signals and voltages, ensuring stable output.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional driving circuit configuration is used, then the circuit can output signals, but the circuit size becomes large and signal stability is insufficient

Engineering Contradiction:
Improvesignal stabilityVSAvoidcircuit size
Core Design Contradiction:
ReliabilityVSArea of stationary object

Solution Approach 1:

The driving circuit is divided into multiple stages (first stage, second stage, third stage, etc.) with each stage containing specific transistors and inverters. This segmentation allows the circuit to achieve stable signal transmission through multi-stage amplification while maintaining compact size by efficiently arranging the segmented blocks in an alternating pattern.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The circuit merges complementary transistor types (N-channel and P-channel) in an alternating stage configuration, where odd stages use one transistor type and even stages use the other. This merging of complementary elements enables stable output signal transmission while reducing overall circuit area through efficient spatial arrangement.

Inventive Principle:
Principle #5Merging (Combining)

2Reliability

If more transistors and components are added to ensure stable output, then signal stability improves, but device complexity increases

Engineering Contradiction:
Improveoutput signal stabilityVSAvoidcircuit structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

Different stages of the circuit are designed with locally optimized configurations - odd-numbered stages use N-channel transistors while even-numbered stages use P-channel transistors. This local differentiation with alternating patterns achieves stable signal transmission through each stage while avoiding the complexity of a completely uniform or randomly configured circuit.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The circuit employs periodic alternation of transistor types and stage configurations (N-channel in odd stages, P-channel in even stages). This periodic structure creates a predictable, repeating pattern that simplifies design and analysis while ensuring stable signal transmission through consistent amplification characteristics across all stages.

Inventive Principle:
Principle #19Periodic action

Data Source

PatentUS20250201187A1Driving circuit
Publication Date: 2025.06.19 SAMSUNG DISPLAY CO LTD
  • US20250201187A1 patent drawing
  • US20250201187A1 patent drawing
  • US20250201187A1 patent drawing

AI summary

A driving circuit uses a dual-level trigger scheme. The driving circuit includes a P stage in which a transistor configured to receive a start signal is a P-channel transistor, and an N stage in which a transistor configured to receive a start signal is an N-channel transistor, where the N stage is arranged at a certain interval.