Gate Driving Circuit Signal Synchronization for Foldable Displays
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Solution Overview
Problem
Foldable display panels experience significant differences in gate driving signals between adjacent display areas, leading to screen splitting phenomena during full-screen display due to varying input signals, which cause display differences at boundaries.
Innovation Solution
A gate driving circuit with a control circuit that synchronizes the input signals between the last stage gate driving unit of one subcircuit and the first stage gate driving unit of the next subcircuit, ensuring the same type of input signals, such as square wave signals with or without steps, to reduce signal differences and improve display continuity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate gate driving subcircuits are used for each display area, then independent control over brightness is achieved, but display differences appear at boundaries between adjacent display areas
Solution Approach 1:
The patent merges the gate driving signals from adjacent display areas by making the input signal type of the last stage gate driving unit of a bth gate driving subcircuit the same as the input signal type of the first stage gate driving unit of a (b+1)th gate driving subcircuit. This signal merging approach eliminates boundary display differences while preserving independent brightness control capability through the control circuit.
Solution Approach 2:
The patent changes the signal parameter (input signal type) at the boundary between gate driving subcircuits. By controlling the input signal types to be identical at adjacent boundaries, the display consistency is improved without sacrificing the independent control functionality of each display area.
2Device complexity
If different input signal types are used in adjacent gate driving subcircuits, then separate control is simplified, but screen splitting phenomena occur during full-screen display
Solution Approach 1:
The patent applies homogeneity by making the input signal types identical at the boundaries of adjacent gate driving subcircuits. Specifically, the input signal to the last stage of one subcircuit matches the input signal to the first stage of the next subcircuit, ensuring uniform display performance across the entire screen and eliminating screen splitting phenomena.
3Adaptability or versatility
If signal types vary between adjacent display areas, then control flexibility is increased, but display quality at boundaries deteriorates
Solution Approach 1:
The patent introduces dynamic control through the control circuit that can adjust signal types based on display mode. In full-screen display mode, the control circuit ensures identical input signal types at boundaries for high display quality. In split-screen mode, different signal types can be used for different display areas, maintaining control flexibility while adapting to different operational requirements.
Data Source
AI summary
The present disclosure relates to a gate driving circuit applied to a foldable display panel comprising B display areas arranged in order. The gate driving circuit may include B gate driving subcircuits and a control circuit. Each of the gate driving subcircuits may correspond to one of the display areas and each of the gate driving subcircuits may comprise a plurality of stage gate driving units. The control circuit may be configured to, when the foldable display panel is in a full screen display state, control a type of an input signal in a last stage gate driving unit of a bth gate driving subcircuit to be the same as a type of an input signal in a first stage gate driving unit of a (b+1)th gate driving subcircuit, where B is an integer greater than 1 and b is a positive integer less than B.