Peripheral Bias Voltage Supply Lines for Display Flicker Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices experience degraded visibility due to increased load on bias voltage lines in the peripheral area, leading to flicker phenomena during high and low-frequency driving.
Innovation Solution
The display device incorporates a bias voltage supply line with a top and bottom supply line arranged on different layers, with the top supply line and a second connection electrode layer on the same layer, and a functional layer between the semiconductor and connection electrode layers, optimizing the electrical connections and reducing load on bias voltage lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bias voltage lines are arranged in the peripheral area to supply voltage to display elements, then voltage distribution is achieved, but visibility degrades due to increased load and flicker phenomena
Solution Approach 1:
The bias voltage supply line is divided into multiple separate lines (first bias voltage supply line and second bias voltage supply line) that are independently arranged in the peripheral area. This segmentation allows each line to serve specific display elements, distributing the voltage supply load and reducing the flicker phenomenon that degrades visibility.
Solution Approach 2:
The patent introduces a third dimension by arranging bias voltage supply lines in the peripheral area (outside the display area) rather than only within the display area. This spatial reconfiguration reduces the load on individual lines and minimizes flicker effects, thereby improving visibility while maintaining stable voltage distribution.
2Reliability
If multiple supply lines are arranged on different layers to reduce load, then flicker is minimized, but device complexity increases
Solution Approach 1:
The supply line system is segmented into multiple independent lines (first bias voltage supply line, second bias voltage supply line, first initialization voltage supply line, second initialization voltage supply line) arranged on different layers. Each line serves specific functions, and this segmentation reduces flicker by distributing the electrical load while maintaining manageable complexity through functional specialization.
Solution Approach 2:
The multi-layer supply line structure serves multiple functions simultaneously: providing bias voltage, initialization voltage, and reducing flicker effects. By integrating these functions into a unified multi-layer architecture, the patent achieves flicker minimization without proportionally increasing device complexity.
Data Source
AI summary
A display device includes a display area and a peripheral area disposed adjacent to the display area, a display element arranged in the display area, a first semiconductor layer, a gate conductive layer, a first connection electrode layer, and a second connection electrode layer, sequentially arranged on a substrate, and a bias voltage supply line arranged in the peripheral area. The bias voltage supply line includes a top supply line and a bottom supply line arranged on different layers, and the top supply line and the second connection electrode layer are arranged on a same layer.