Display Panel Gate Drive Units for Brightness Uniformity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing display panel designs face challenges in minimizing brightness differences among areas due to signal distortion caused by line resistance, which increases the size of the gate drive unit and the bezel width, complicating the structure and increasing power consumption.
Innovation Solution
The display panel incorporates first and second gate drive units disposed in outer areas of the non-display area, with specific signal blocks supplying drive control signals to horizontal lines, where the second drive control signal is supplied from both sides to minimize brightness differences, and the structure is simplified by reducing the area occupied by the gate drive units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the gate drive unit is embedded in the display panel, then the structure is simplified and manufacturing cost is reduced, but the non-display area increases and bezel width cannot be decreased below a predetermined limit
Solution Approach 1:
The gate drive unit is divided into multiple independent gate drive circuits, each responsible for driving different horizontal lines. This segmentation allows the gate drive unit to be distributed across different regions of the non-display area, reducing the concentration of area in one location and enabling better spatial utilization while maintaining structural simplicity.
2Illumination intensity
If the gate drive unit size is increased to cover both sides of the display area, then brightness uniformity is improved, but the bezel width increases significantly
Solution Approach 1:
The gate drive circuits are arranged in a distributed pattern across the non-display area, utilizing both horizontal and vertical spatial dimensions. This dimensional distribution allows the gate drive unit to cover both sides of the display area for brightness uniformity while spreading the area occupancy to minimize bezel width impact.
3Reliability
If a compensation circuit is added to the gate drive unit, then threshold voltage compensation is achieved, but the gate drive unit structure becomes more complicated and area increases
Solution Approach 1:
The compensation circuit functionality is merged with the existing gate drive circuits by integrating compensation transistors and capacitors within the same pixel structure. This merging approach provides threshold voltage compensation without requiring separate compensation circuit modules, thereby maintaining structural simplicity while improving reliability.
Data Source
AI summary
A display panel having a display area where an image is displayed and a non-display area outside the display area, comprising first and second gate drive units disposed in a first outer area and a second outer area of the non-display area corresponding to both sides of the display area in a horizontal direction. Here, the first gate drive unit disposed in the first outer area includes a first signal block supplying a first drive control signal to respective horizontal lines having pixels, which are arranged successively in the horizontal direction, of the plurality of pixels and a second signal block supplying a second drive control signal having pulses different from those of the first drive control signal to the respective horizontal lines, and the second gate drive unit disposed in the second outer area includes the second signal block and a third signal block supplying a third drive control signal having pulses different from those of the first and second drive control signals to the respective horizontal lines.