Scan Driving Circuit Reducing Space for Narrow Frame Displays
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Solution Overview
Problem
Existing scan driving circuits in organic light emitting display devices are complex and occupy significant space, hindering the development of display devices with narrow frames.
Innovation Solution
A simplified scan driving circuit design that reduces the number of switching components by utilizing a first and second control module and an output module with specific signal configurations, including clock and reference signals, to output scan driving signals with fewer components, thereby reducing the circuit's size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a conventional scan driving circuit is used, then the scan driving function is achieved, but the circuit occupies large space and becomes complicated
Solution Approach 1:
The patent merges the function of generating scan driving signals directly into the scan driving circuit itself, eliminating the need for separate signal generation circuits. The scan driving circuit integrates multiple switching components (first to fifth switching components) that work cooperatively to generate and output scan driving signals, thereby reducing overall circuit complexity and occupied space while maintaining the scan driving function
Solution Approach 2:
The scan driving circuit is designed to perform multiple functions: it receives clock signals and start signals, generates scan driving signals through internal switching components, and outputs these signals to scan lines. This multi-functional integration reduces the need for separate dedicated circuits for each function, thereby reducing circuit complexity and space occupation
2Area of stationary object
If the number of switching components is reduced, then the circuit space is reduced, but the signal output capability must be maintained
Solution Approach 1:
The patent combines multiple switching components (first through fifth switching components) into a unified scan driving circuit structure where they work cooperatively. This merging allows the circuit to maintain robust signal output capability through coordinated operation of the switching components while occupying less space than conventional separate circuits
Solution Approach 2:
The scan driving circuit is segmented into distinct functional blocks with specific switching components (first to fifth switching components) that can be independently controlled by clock signals and start signals. This segmentation allows each component to perform its specific function efficiently, maintaining reliable signal output while reducing overall circuit complexity and space
Data Source
AI summary
Embodiments of the present application provide a scan driving circuit, a scan driver and a display device. The scan driving circuit includes a first control module, a second control module and an output module. The output module includes a first switching unit, a second switching unit and a scan driving signal output end. The first switching unit and the second switching unit are connected in parallel and are connected with the scan driving signal output end. A port of the first switching unit is away from the scan driving signal output end to receive a second clock signal. A port of the second switching unit is away from the scan driving signal output end to receive a first reference signal. A function of outputting the scan driving signal by using fewer components is realized with the scan driving circuit according to the embodiments of the present application.