Gate Driving Unit Segmentation for Reduced Non-Display Area
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Solution Overview
Problem
There is a growing demand for display devices with a reduced non-display area to maximize the display area, as a larger non-display area can diminish the effective use of display devices, especially in tiled configurations.
Innovation Solution
The design incorporates a display device with a defined display area and non-display area, where the gate driving unit is partially integrated into the display area, including a gate driving unit with multiple stages and a compensation electrode, and a driving area and electrode area are defined between pixel rows, allowing for efficient use of space and minimizing the non-display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the gate driving unit is integrated onto the display panel, then the display area is improved, but the non-display area becomes large
Solution Approach 1:
The gate driving unit is divided into multiple stages (first stage, second stage, third stage) that are distributed at different locations on the display panel. The first stage is positioned in the non-display area, while the second and third stages are positioned in the display area between pixel rows. This segmentation allows the driving unit to be distributed rather than concentrated, reducing the non-display area while maintaining functionality.
Solution Approach 2:
The gate driving unit utilizes the vertical dimension by positioning stages at different row positions between pixel rows. The driving unit extends in the row direction rather than only in the column direction, effectively using the display area space to reduce the non-display area footprint.
2Area of stationary object
If the gate driving unit is positioned in the display area, then the non-display area is reduced, but display quality issues such as flicker or afterimage may occur
Solution Approach 1:
A compensation electrode is introduced as an intermediary element between the gate driving unit and the pixel electrodes. This compensation electrode compensates for the additional capacitance effects caused by positioning the gate driving unit in the display area, thereby preventing display quality issues such as flicker and afterimage while maintaining the reduced non-display area configuration.
Solution Approach 2:
The patent adjusts electrical parameters by introducing a compensation electrode that modifies the capacitance distribution in the display area. This parameter change (adding compensatory capacitance) counteracts the harmful electrical effects of the gate driving unit being positioned in the display area, thus maintaining display quality.
3Area of stationary object
If multiple stages of the gate driving unit are disposed in the display area, then the non-display area is minimized, but the device complexity increases
Solution Approach 1:
The gate driving unit is segmented into multiple functional stages that can be independently designed and positioned. Each stage (first, second, and third stages) performs specific functions and can be optimized separately, making the overall complex structure more manageable while distributing it across the display panel to minimize non-display area.
Data Source
AI summary
A display device includes a display substrate, on which a display area and a non-display area are defined, a plurality of gate lines arranged in the display area to extend in a first direction, a gate driving unit including a plurality of stages which outputs gate signals to the plurality of gate lines, and a plurality of pixel rows disposed in the display area and connected to the plurality of gate lines, where a driving area and an electrode area are defined in the display area between two adjacent pixel rows in a second direction among the plurality of pixel rows, at least a part of the plurality of stages is disposed in the driving area, and a compensation electrode is disposed in the electrode area.