Single-Ended to Differential Modules for Display Driver IC Reduction
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Solution Overview
Problem
Current display technologies require a large number of gate driver ICs due to progressive scan methods, leading to increased production costs.
Innovation Solution
A drive circuit with N single-ended to differential modules connected to N signal output lines and 2N scanning lines, utilizing a clock signal to output scanning signals and charge the scanning lines, reducing the number of driver modules needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If one signal output line is corresponding to one scanning line in progressive scan method, then the display can be driven with progressive scan, but a large number of gate driver ICs are required and production costs are greatly increased
Solution Approach 1:
The patent divides one scanning line signal into multiple segments by using multiple scanning lines (first scanning line and second scanning line) that are alternately driven by a single signal output line through the single-ended to differential module, thereby reducing the number of gate driver ICs required while maintaining progressive scan capability
Solution Approach 2:
The single-ended to differential module enables one signal output line to serve multiple scanning lines by converting the single-ended signal to differential signals that can drive both the first and second scanning lines alternately, making the signal output line multi-functional
2Ease of manufacture
If one signal output line is corresponding to one scanning line, then the driving circuit is simple, but a large number of gate driver ICs are required leading to increased production costs
Solution Approach 1:
The patent merges the function of driving multiple scanning lines into a single signal output line by using the single-ended to differential module, which combines the first and second scanning line driving functions into one module, thereby reducing the total quantity of driver modules required and lowering production costs
Data Source
AI summary
This application provides a drive circuit of a display device and a driving method for the display device. The display device includes a driver module and a display panel. The drive circuit includes: N single-ended to differential modules, connected to N signal output lines of the driver module and 2N scanning lines of the display panel and connected to a clock signal. Each single-ended to differential module is correspondingly connected to one signal output line and two scanning lines. The N single-ended to differential modules are configured to: output, to the 2N scanning lines according to the clock signal, scanning signals output by the N signal output lines, and charge the 2N scanning lines by using the N signal output lines, where N≥1, and N is a positive integer.