Array Substrate Interchanging Electrodes Neutralize Polar Particles
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing LCD panels suffer from residual images due to polar particle accumulation, which existing technologies cannot effectively address due to limitations in materials, processing, and manual errors.
Innovation Solution
An array substrate with sub-pixel units featuring interchanging first and second transparent electrodes and switching elements, which alternate in providing pixel and common electrode signals after predetermined time periods to neutralize polar particle accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If polar particles are reduced by optimizing materials and processing, then residual image defect is reduced, but manufacturing complexity and cost increase
Solution Approach 1:
The patent changes the electrical parameter (voltage polarity) of the common electrode by swapping the connection between the first and second transparent electrodes and their corresponding switching elements. This parameter change causes polar particles to be repelled from the electrode surfaces, eliminating residual images without requiring material optimization or complex processing adjustments
Solution Approach 2:
Instead of trying to prevent polar particle accumulation through material selection and processing optimization, the patent inverts the approach by actively removing accumulated particles through voltage polarity reversal. The common electrode connection is inverted between adjacent sub-pixel units, creating an electric field that repels polar particles from the electrode surfaces
2Object-affected harmful factors
If polar particle content is reduced by selecting less pollutive encapsulating materials and steady liquid crystal materials, then residual image defect is reduced, but manufacturing cost and time increase
Solution Approach 1:
The patent extracts the harmful polar particles from the liquid crystal layer by creating an electric field through voltage polarity reversal. The swapped connection of transparent electrodes generates repulsive forces that remove accumulated polar particles from electrode surfaces, eliminating the need for time-consuming material optimization processes
Solution Approach 2:
The display device performs self-cleaning of polar particles through the voltage swapping mechanism. The system automatically repels and removes accumulated polar particles by reversing the electric field polarity, eliminating the need for external processing or material changes to maintain image quality
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Prevents residual images by scattering or neutralizing polar particles, thereby improving image quality in display devices.
Implementation Method 1
the polar particles in the LCD panel can move toward the upper substrate and the lower substrate of the LCD panel along a direction of the electric field
Implementation Method 2
the polar particles in the LCD panel can move toward the upper substrate and the lower substrate of the LCD panel along a direction of the electric field
Data Source
AI summary
Disclosed are an array substrate and a display device. The array substrate comprises a plurality of sub-pixel units arranged in an array. Each of the sub-pixel units comprises a first transparent electrode and a second transparent electrode cooperating with each other, and a first switching element and a second switching element cooperating with each other. The signals provided by the first switching element and the second switching element are different, and are interchanged with each other each time after a given time period.