Display Drive Circuit Compensation Capacitance Balancing
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Solution Overview
Problem
As display panels increase in size, the arrangement of data lines and scanning lines leads to non-uniform signal transmission losses, resulting in varying display effects across different locations.
Innovation Solution
A drive circuit for display panels is designed with a timing drive circuit and a scanning drive circuit, featuring transmission signal lines connected to clock signal lines through metal bridging holes, where the compensation capacitance closer to the timing drive circuit is smaller, and the number and area of bridging holes are adjusted to balance signal transmission losses, ensuring uniform display effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If display panels increase in size with uniform line arrangement, then manufacturing simplicity is maintained, but signal transmission losses become non-uniform across different locations
Solution Approach 1:
The patent applies local quality by differentiating the compensation capacitance values based on spatial location. Transmission signal lines at different positions (first position vs. second position) are assigned different compensation capacitance values to counteract position-dependent signal transmission losses, thereby achieving uniform display effects across the panel while maintaining a relatively simple line arrangement structure.
2Reliability
If compensation capacitance is increased for transmission signal lines farther from timing drive circuit, then signal transmission loss is reduced, but device complexity increases
Solution Approach 1:
The patent implements parameter changes by systematically varying the compensation capacitance values based on the distance from the timing drive circuit. Transmission signal lines at different positions are assigned different capacitance parameters (first compensation capacitance vs. second compensation capacitance), allowing optimization of signal transmission quality while managing device complexity through a structured parameter differentiation approach.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution reduces signal transmission losses and achieves a more uniform display effect by balancing capacitance across different transmission signal lines, maintaining consistent signal transmission across the panel.
Implementation Method 1
a compensation capacitor, connected in parallel to each transmission signal line
Data Source
AI summary
Disclosed are a drive circuit of a display device, and a display device. The drive circuit includes: a plurality of sets of transmission signal lines; a set of clock signal lines, in signal connection with a timing drive circuit separately to acquire a gate drive clock signal; and a compensation capacitor, connected in parallel to each transmission signal line, each transmission signal line in each set of transmission signal lines being in signal connection with a clock signal line corresponding to a set of clock signal lines, where the compensation capacitance corresponding to the transmission signal line, closer to the timing drive circuit, in each set of transmission signal lines is smaller.