Array Substrate With Dual Sub-Pixel Voltage Control for Display Fineness
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Solution Overview
Problem
Conventional TFT-LCDs have limited levels of brightness and darkness due to each pixel unit only having one pixel electrode, resulting in a less fine display picture.
Innovation Solution
The array substrate includes two sub-pixels of the same color, each with a pixel electrode and a common electrode, where the voltage between the pixel electrodes and common electrodes can be differently adjusted to achieve varying gray scales, allowing for finer adjustments in brightness and darkness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If each pixel unit has only one pixel electrode, then the device complexity is low, but the display fineness and brightness levels are limited
Solution Approach 1:
The patent divides each pixel unit into multiple sub-pixels (first sub-pixel and second sub-pixel), each with its own pixel electrode and common electrode. This segmentation allows independent voltage control of each sub-pixel, enabling finer grayscale adjustment and improved display fineness while maintaining a manageable structural complexity through modular design
Solution Approach 2:
The patent introduces a new dimension of control by adding multiple common electrodes (first common electrode and second common electrode) to each pixel unit, creating an additional voltage control dimension. This allows differential voltage application across sub-pixels, expanding the grayscale control capability beyond the single-voltage limitation of conventional single-electrode designs
2Illumination intensity
If multiple sub-pixels with different voltages are used, then the brightness levels and darkness levels increase, but the voltage control complexity increases
Solution Approach 1:
The patent applies different voltage characteristics to different sub-pixels within the same pixel unit. The first sub-pixel and second sub-pixel can have different voltage differences applied to them, allowing local optimization of brightness and darkness levels. This local quality differentiation enables finer grayscale control without requiring complete redesign of the overall voltage control system
Solution Approach 2:
The patent implements dynamic voltage control where the voltage difference between sub-pixels can be adjusted based on display requirements. By dynamically varying the voltage applied to each common electrode, the system can adaptively control brightness levels and grayscale transitions, making the complex multi-voltage system operable through time-dependent control strategies
Data Source
AI summary
An array substrate, and a driving method and driving device thereof, in the field of display technology. A display device includes an array substrate, including a plurality of pixel units. Each pixel unit includes a first sub-pixel and a second sub-pixel of the same color, the first sub-pixel includes a first pixel electrode (061) and a first common electrode (081), and the second sub-pixel includes a second pixel electrode (062) and a second common electrode (082). In a first stage, a voltage between the first pixel electrode (061) and the first common electrode (081) is greater than a voltage between the second pixel electrode (062) and the second common electrode (082), which optimizes and solves the problem of low fineness of the display picture, and improves the fineness of the display picture.