Pixel Electrode Polarity Inversion for Display Flicker and Crosstalk
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Solution Overview
Problem
Existing display panels suffer from deteriorating image quality due to flicker and horizontal crosstalk phenomena, with existing solutions either failing to address both issues simultaneously or requiring complex driving signals, leading to high power consumption.
Innovation Solution
A display panel design featuring pixel electrodes with opposite polarities in adjacent columns and rows, connected via switch elements, which avoids flicker and horizontal crosstalk while maintaining low power consumption through a simple driving mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If dot inversion driving mode is used to prevent flicker, then flicker phenomenon is avoided, but power consumption increases and horizontal crosstalk cannot be avoided
Solution Approach 1:
The display panel is divided into multiple pixel electrode array units, with each unit containing pixel electrodes of four types arranged in a specific pattern. This segmentation allows different regions to have opposite polarities, preventing flicker without requiring complex dot inversion driving modes, thereby reducing power consumption.
Solution Approach 2:
Different pixel electrode array units are assigned different polarity configurations locally. Specifically, pixel electrodes in the same column have opposite polarities, and pixel electrodes of the same type in the same row have opposite polarities. This local quality variation eliminates flicker and horizontal crosstalk simultaneously while maintaining simple driving modes.
2Object-affected harmful factors
If dot inversion driving mode is used to prevent flicker, then flicker phenomenon is avoided, but horizontal crosstalk phenomenon cannot be avoided
Solution Approach 1:
The display panel is segmented into pixel electrode array units with four types of pixel electrodes. This segmentation enables independent polarity control in different regions, allowing simultaneous prevention of both flicker and horizontal crosstalk without complex driving signals.
Solution Approach 2:
Local polarity variations are implemented across different pixel electrode array units. Pixel electrodes in the same column have opposite polarities, and pixel electrodes of the same type in the same row have opposite polarities. This local quality differentiation simultaneously addresses both flicker and horizontal crosstalk issues.
3Object-affected harmful factors
If complex driving signals are used to address flicker, then flicker phenomenon is avoided, but device complexity increases
Solution Approach 1:
Instead of using complex driving signals to manage polarity variations, the patent inverts the approach by structuring the pixel electrodes themselves to have inherent opposite polarities. This structural inversion simplifies the driving signals required while effectively preventing flicker.
Solution Approach 2:
The pixel electrode array units are designed to self-manage their polarity configurations through their structural arrangement. The four types of pixel electrodes automatically create the necessary polarity variations without requiring complex external driving control, thereby reducing device complexity.
Data Source
AI summary
A display panel and a display device are provided. The display panel includes a substrate, multiple data line groups which are arranged on the substrate sequentially and adjacently, and multiple gate line groups which are arranged on the substrate sequentially and adjacently. The display panel further includes multiple pixel electrode array units which are arranged in an array on the substrate. The pixel electrodes in the pixel electrode array unit are electrically connected with the data lines and the gate lines via switch elements. Data driving signals received by any two adjacent pixel electrodes in a same column have opposite polarities. The pixel electrode array unit includes a first pixel electrode, a second pixel electrode, a third pixel electrode, and a fourth pixel electrode. Data driving signals received by any two adjacent pixel electrodes of a same type in the same row have opposite polarities.