Display Panel Scan Line Drive Uniformity
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Solution Overview
Problem
Existing display technologies face challenges in achieving uniform picture display when using one-drive-multiple designs, leading to issues like flicker and non-uniform effects due to brightness differences between rows, which affect user experience in portable and wearable devices.
Innovation Solution
A display panel and drive method that involves a configuration where each scan line unit includes two scan lines, with a specific sequence of receiving scan drive signals to ensure that odd-numbered rows are bright and even-numbered rows are dark in one frame, and vice versa in adjacent frames, to achieve superimposition and complementation of display intensities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If one-drive-multiple design is used, then frame size is reduced, but display uniformity deteriorates
Solution Approach 1:
The patent divides the scan drive signal transmission into two separate gate drive modules (first and second gate drive modules), each responsible for driving different sets of scan lines. This segmentation allows independent optimization of each module while maintaining overall display uniformity, resolving the contradiction between compact frame size and display uniformity in one-drive-multiple configurations.
Solution Approach 2:
The patent implements different drive configurations for different regions of the display panel by using two separate gate drive modules with different cascade directions. The first gate drive module drives scan lines in one direction while the second module drives scan lines in the opposite direction, allowing local optimization of display uniformity in different regions while maintaining small frame size.
2Device complexity
If one-drive-multiple design is used, then device complexity is reduced, but display uniformity deteriorates
Solution Approach 1:
The patent segments the gate drive function into two separate modules with different cascade directions. Instead of using a single complex drive module, the system uses two simpler modules working in coordination, reducing individual module complexity while achieving better overall display uniformity through complementary drive patterns.
Solution Approach 2:
The patent combines the outputs of two gate drive modules with opposite cascade directions to drive the same display panel. By merging their effects, the system achieves improved display uniformity while keeping each individual module relatively simple in structure.
3Ease of operation
If scan lines are driven sequentially in traditional order, then drive simplicity is maintained, but brightness uniformity deteriorates
Solution Approach 1:
The patent inverts the cascade drive direction of the second gate drive module relative to the first module. While the first module drives scan lines from top to bottom, the second module drives from bottom to top. This inversion causes odd-numbered rows to be bright in one frame and even-numbered rows to be bright in the next frame, achieving brightness complementation and improved overall uniformity.
Solution Approach 2:
The patent implements periodic alternation of bright and dark rows across consecutive frames. By using two gate drive modules with opposite cascade directions, the system creates a periodic pattern where different rows are bright in alternating frames, and the human eye integrates these patterns to perceive uniform brightness across all rows.
Data Source
AI summary
A display panel, a drive method, and a display apparatus are provided in the present disclosure. The display region of the display panel includes a plurality of scan line units; and each scan line unit includes two scan lines which extend along the first direction and are arranged along a second direction. The method includes, for displaying M frames of pictures, receiving a scan drive signal sequentially by a plurality of scan lines arranged along the second direction; and for displaying N frames of pictures adjacent to the M frames of pictures, receiving the scan drive signal sequentially by the plurality of scan line units arranged along the second direction; and along the second direction, for each same scan line unit, receiving the scan drive signal by an ith scan line after an (i+1)th scan line receives the scan drive signal.