Display Panel Voltage Regulation for Uniform Brightness
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Solution Overview
Problem
Existing display panels suffer from poor display uniformity and user experience in low gray scale states due to differences in starting voltages of light-emitting components, leading to inconsistent brightness across sub-pixels.
Innovation Solution
Incorporating first and second type sub-pixels with voltage-regulating modules connected between the pixel drive circuit and light-emitting components, which adjust voltages to reduce the difference in starting voltages, ensuring consistent brightness across sub-pixels using the same pixel drive circuit and driving current.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If voltage-regulating modules are added to adjust starting voltages of light-emitting components, then display uniformity in low gray scale states is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by differentiating sub-pixels into first and second types based on their starting voltage characteristics. First type sub-pixels (with higher starting voltages) are equipped with first voltage-regulating modules, while second type sub-pixels (with lower starting voltages) are equipped with second voltage-regulating modules. This localized differentiation allows each sub-pixel type to receive appropriate voltage compensation, achieving uniform display across the panel without requiring all sub-pixels to have identical circuit structures.
Solution Approach 2:
The patent changes the voltage parameter dynamically based on sub-pixel type. By introducing voltage-regulating modules that adjust the starting voltage of light-emitting components according to their specific characteristics, the system compensates for manufacturing variations. The voltage-regulating modules modify the voltage parameter to ensure that both first and second type sub-pixels achieve consistent brightness levels, particularly in low gray scale states where voltage differences have the most impact.
2Manufacturing precision
If different voltage-regulating modules are used for first and second type sub-pixels, then brightness consistency is improved, but ease of manufacture deteriorates
Solution Approach 1:
The patent segments the display panel's sub-pixels into two distinct types based on their starting voltage characteristics. This segmentation allows the manufacturing process to target specific sub-pixel groups with appropriate voltage-regulating modules. By dividing the sub-pixel population into first and second types, the system can apply differentiated voltage compensation strategies without requiring complete redesign of the entire display structure, thereby balancing manufacturing complexity with performance improvement.
Data Source
AI summary
Provided is a display panel and display device. The display panel includes a first type sub-pixel and a second type sub-pixel. The first type sub-pixel includes a first voltage-regulating module, which is connected between a pixel drive circuit and a light-emitting component in the first type sub-pixel for increasing a voltage of two ends of the light-emitting component; and/or, the second type sub-pixel includes a second voltage-regulating module, which is connected between a pixel drive circuit and a light-emitting component in the second type sub-pixel for reducing a voltage between a first end and a second end of the light-emitting component.