LTPO Scanning Signal Circuit High-Level Pulse Generation
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Solution Overview
Problem
Current scanning signal circuits for display panels using low temperature polycrystalline oxide (LTPO) technology are unable to generate high-level pulses required for N-type transistors, limiting the performance of pixel driving circuits.
Innovation Solution
A scanning signal circuit comprising an input module, potential control module, potential stabilization module, first output module, and second output module, which receives and processes input signals and clock signals to output high-level pulses, enabling the stabilization and generation of scanning signals with high-level pulses for pixel driving circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional scanning signal circuit is used, then the circuit structure is simple, but it cannot generate high-level pulses required for LTPO display panels
Solution Approach 1:
The scanning signal circuit is divided into multiple functional modules: input module, potential control module, potential stabilization module, first output module, and second output module. Each module performs a specific function in the signal processing chain, enabling the generation of high-level pulses through coordinated operation of segmented components.
Solution Approach 2:
The potential stabilization module acts as an intermediary between the potential control module and the output modules. It receives control signals and stabilizes the potential before transmitting to output modules, enabling reliable high-level pulse generation while managing circuit complexity through intermediate control stages.
2Reliability
If multi-module scanning signal circuit is implemented, then high-level pulses can be generated, but the circuit structure becomes complex
Solution Approach 1:
The scanning signal circuit is designed with universal modules that can handle both low-level and high-level signal requirements. The potential control module and potential stabilization module serve multiple functions: signal reception, potential adjustment, stabilization, and transmission, reducing the need for separate dedicated circuits for different signal levels.
Solution Approach 2:
The potential stabilization module receives feedback from the output modules and adjusts the potential accordingly to maintain stable signal levels. This feedback mechanism ensures reliable high-level pulse generation while allowing the circuit to self-regulate and reduce complexity through adaptive control.
Data Source
AI summary
A scanning signal circuit, a display panel and a driving method are provided. In the scanning signal circuit, under an action of an input signal, a first target clock signal, a second target clock signal and a third target clock signal, the input signal and the second target clock signal are transmitted to a potential stabilization module, a first output module and a second output module through an input module and a potential control module; and under a stabilization function of the potential stabilization module that is applied on inputs of the first and second output modules through a high-level signal and a third target clock signal, the first output module is configured to output a first output signal, and the second output module is configured to use a fourth target clock signal to output a second output signal with high-level pulses.