Multi-Stage Driving Circuit for Stable Output in Compact Displays
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Solution Overview
Problem
Existing driving circuits face challenges in achieving a small size while stably outputting signals, which is crucial for efficient operation in display apparatuses.
Innovation Solution
The driving circuit incorporates a specific configuration of transistors and capacitors, including first to eighth transistors and capacitors, connected in a manner that allows for stable output signal generation, with each stage having a control circuit to manage node voltages and output signals based on input signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the driving circuit uses a conventional configuration with multiple transistors and capacitors, then the output signal stability is improved, but the circuit size increases
Solution Approach 1:
The patent combines multiple transistor functions into integrated stages. Each stage integrates first through eighth transistors with capacitors to form compact functional units that generate output signals while maintaining stability. The merging of control and output functions within each stage reduces overall circuit area compared to conventional separate configurations.
Solution Approach 2:
The driving circuit is divided into multiple independent stages, where each stage contains a specific configuration of transistors (first through eighth transistors) and capacitors. This segmentation allows each stage to be optimized for stable output signal generation while keeping individual stage sizes small, thereby reducing the total circuit area.
2Area of stationary object
If the driving circuit reduces the number of components to decrease size, then the circuit size is reduced, but the output signal stability deteriorates
Solution Approach 1:
Each stage in the driving circuit is designed as a universal module that performs multiple functions: signal generation, voltage control, and output stabilization. The first through eighth transistors and capacitors within each stage work together to accomplish these functions simultaneously, eliminating the need for additional dedicated components and maintaining stability in a compact form.
Solution Approach 2:
The patent optimizes the electrical parameters of the transistor-c Capacitor configurations within each stage. By carefully selecting transistor types, gate connections, and capacitor values, the circuit achieves stable output signals with fewer components. The parameter optimization allows compact stages to maintain the stability previously requiring larger conventional circuits.
3Area of stationary object
If the driving circuit uses a compact configuration, then the circuit size is reduced, but the signal output capability is compromised
Solution Approach 1:
The patent arranges the transistor and capacitor components in a multi-dimensional layout within each stage. The first through eighth transistors are connected in configurations that utilize vertical and horizontal space efficiently, with gates connected to various nodes and terminals. This spatial optimization allows compact stages to maintain full signal output capability without requiring larger conventional linear arrangements.
Data Source
AI summary
A driving circuit includes stages. Each stage includes: a first transistor connected between a first node and a first terminal to which a first voltage is input, and including a gate connected to a first input terminal to which a start signal is input; a second transistor connected between a second node and a second terminal to which a second voltage lower than the first voltage is input, and including a gate connected to the first node; a third transistor connected between the first terminal and the second node and comprising a gate connected to a second input terminal to which a carry signal is input; a fourth transistor connected between the first node and the second terminal and comprising a gate connected to the second node; and an output circuit controlled by voltage levels of the first node and the second node and output an output signal.