Display Substrate Gate Drive Layout for Narrow Bezel Panels
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Solution Overview
Problem
Existing display technologies face challenges in optimizing the space layout of gate drive circuits in display substrates, particularly in achieving a narrow bezel design while ensuring efficient signal transmission and voltage control in shift register units.
Innovation Solution
The display substrate incorporates a gate drive circuit with cascaded shift register units, featuring interconnected control circuits and capacitors arranged in specific directions to optimize trace arrangements, reducing wiring space and enhancing signal transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the gate drive circuit uses traditional linear arrangement of control circuits, then the wiring trace length increases, but the wiring space occupation increases and signal transmission efficiency decreases
Solution Approach 1:
The patent transforms the traditional linear arrangement of control circuits into a two-dimensional planar layout where control circuits are distributed across different regions (first control circuit in first direction, second control circuit in second direction). This dimensional change allows wiring traces to be optimized independently in each direction, reducing total trace length while maintaining compact space occupation and improving signal transmission efficiency.
2Area of stationary object
If the shift register unit uses compact control circuit arrangement, then the wiring space is reduced, but the voltage control precision may deteriorate
Solution Approach 1:
The gate drive circuit is segmented into multiple independent control circuits (first control circuit and second control circuit) positioned in different directions. Each control circuit independently manages specific nodes, allowing compact arrangement while maintaining precise voltage control through distributed control architecture. The segmentation enables space optimization without compromising control precision.
Solution Approach 2:
Different control circuits are positioned in different spatial regions (first control circuit along first direction, second control circuit along second direction) to optimize local wiring paths. Each control circuit is locally optimized for its specific function, allowing compact overall arrangement while maintaining precise voltage control at each node through localized control.
3Shape
If the display substrate uses narrow bezel design, then the aesthetic appearance is improved, but the gate drive circuit layout becomes more complex
Solution Approach 1:
The gate drive circuit layout transitions from linear to two-dimensional arrangement, with control circuits distributed in different directions. This dimensional expansion allows the circuit to fit within the constrained bezel area while maintaining manageable complexity through systematic spatial organization of control elements.
Data Source
AI summary
A display substrate, and a display apparatus corresponding thereto and a manufacturing method therefor. The display substrate comprises: a display region and a non-display region, wherein the non-display region is provided with a gate driving circuit, which comprises a plurality of cascaded shift register units. Each shift register unit comprises: an input circuit (10), a first control circuit (11), a second control circuit (12) and an output circuit (15), wherein the first control circuit (11) is located between the input circuit (10) and the output circuit (15) in a first direction, and the first control circuit (11) is arranged in the first direction; and the second control circuit (12) is adjacent to the first control circuit (11) in a second direction; the first direction intersects with the second direction.