Display Panel Auxiliary Driving Layout for Narrower Bezels
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Solution Overview
Problem
The existing display panel and electronic devices using the GOA dual driving structure increase the frame width of the display panel, which contradicts consumer demand for narrow frames.
Innovation Solution
A display panel design that includes cascaded gate driving units and first auxiliary driving units in the non-active area, with scan lines in the active area, where the first auxiliary driving units rapidly pull down the falling edge of the scan signal to reduce signal delay, achieving a dual driving effect without increasing frame width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If GOA dual driving structure is adopted to reduce signal delay, then signal transmission delay is reduced, but frame width increases
Solution Approach 1:
The gate driving function is segmented into two parts: main gate driving units positioned at edges and auxiliary driving units positioned at intermediate positions along scan lines. This segmentation allows the auxiliary units to boost signals at distant positions without requiring additional edge positioning, thus reducing signal delay without increasing frame width.
Solution Approach 2:
Instead of adding gate driving units only in the horizontal dimension (which increases frame width), the patent utilizes the vertical dimension by positioning auxiliary driving units at intermediate positions along the scan lines. This dimensional approach allows signal boosting without expanding the horizontal frame width.
2Loss of time
If gate driving circuits are designed at both terminals of scan line to reduce signal delay, then signal delay is reduced, but width of left and right frames increases
Solution Approach 1:
The gate driving function is segmented into main gate driving units at edges and auxiliary driving units at intermediate positions. This segmentation enables signal boosting at multiple points without requiring symmetric dual-terminal configuration, thus reducing signal delay without increasing frame area.
Solution Approach 2:
Auxiliary driving units are selectively positioned at intermediate positions along scan lines where signal delay becomes significant. This local quality approach applies enhanced driving capability only where needed, rather than uniformly at both terminals, optimizing signal delay reduction without unnecessary frame area expansion.
3Length of stationary object
If number of gate driving units is reduced to minimize frame width, then frame width is minimized, but signal transmission delay increases
Solution Approach 1:
The gate driving function is segmented between main gate driving units (reduced in number compared to full dual-terminal configuration) and auxiliary driving units positioned at intermediate positions. This segmentation maintains minimal frame width while the auxiliary units compensate for signal delay that would otherwise require additional edge units.
Solution Approach 2:
Auxiliary driving units act as intermediary elements between the main gate driving units at edges and the distant positions on scan lines. These intermediaries boost the signal at critical intermediate points, reducing signal transmission delay without requiring a complete dual-terminal configuration that would increase frame width.
Data Source
AI summary
The present application provides a display panel and an electronic device. The electronic device comprises the display panel. The display panel comprises a gate driving unit, a first auxiliary driving unit and scan lines. The first auxiliary driving unit rapidly pulls down the falling edge of the scan signal transmitted in the scan line to reduce the delay of the falling edge of the scan line. Thus, the number of gate driving units in the display panel can be reduced, thereby reducing the width of the frame of the display panel and the electronic device.