Array Substrate Segmentation for Display Brightness Uniformity
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Solution Overview
Problem
Display panels face issues with poor display brightness uniformity, unsatisfactory resolution, and limited refresh rate due to the integration of data writing and threshold voltage compensation processes in the same stage, which affects the array substrate's performance.
Innovation Solution
The array substrate is designed with separate modules for threshold compensation and data writing, allowing independent control of these processes, ensuring uniform threshold compensation across all greyscales and enabling overlapping data write times without interference, thus achieving high resolution and refresh rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If data writing and threshold voltage compensation are integrated in the same stage, then the circuit structure is simplified, but display brightness uniformity deteriorates and resolution/refresh rate are limited
Solution Approach 1:
The patent divides the pixel circuit into separate functional modules: a drive module for threshold voltage compensation and a light emission control module for data writing. This segmentation allows independent optimization of each function, resolving the contradiction by sacrificing circuit simplicity to achieve superior display uniformity and performance
2Productivity
If data writing and threshold voltage compensation are integrated in the same stage, then the process is streamlined, but threshold compensation uniformity across greyscales deteriorates
Solution Approach 1:
By separating threshold compensation (drive module) from data writing (light emission control module), the patent enables uniform threshold compensation across all greyscale levels. The drive module can independently adjust compensation parameters without interference from data writing operations, ensuring consistent compensation uniformity while maintaining process efficiency through modular operation
3Productivity
If data write times are overlapped to increase refresh rate, then refresh rate improves, but data writing accuracy deteriorates without independent control
Solution Approach 1:
The patent implements independent control of data writing through the light emission control module, which operates independently from the drive module. This allows precise timing control and overlapping of data write operations across different pixel rows, achieving high refresh rates while maintaining data writing accuracy through synchronized modular operations
Data Source
AI summary
Provided are an array substrate, a driving method thereof, and a display panel. The array substrate includes a drive module, an initialization module, a data write module, a storage module, a threshold compensation module, and a light emission control module; where the storage module is configured to store a potential difference between a first connection terminal of the storage module and a second connection terminal of the storage module and couple a potential change of the first connection terminal of the storage module to the second connection terminal of the storage module; the initialization module controls, in response to a first control signal, a potential of the first connection terminal of the storage module and initializes, in response to a second control signal, a first electrode of a light-emitting diode; the threshold compensation module is switched on in response to the first control signal.