Display Panel Data Line Layout for Low-Frame-Rate Flicker
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Solution Overview
Problem
Current LCD panel configurations suffer from capacitive coupling effects and light-induced leakage currents, leading to image flicker issues, especially at low frame rates like 20 Hz, which negatively impact display quality.
Innovation Solution
The display panel design includes data lines with opposite polarities on either side of active devices, where the semiconductor pattern of each active device extends and overlaps the adjacent data line, reducing potential shifts in pixel electrodes and mitigating image flicker.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the frame rate is decreased to reduce power consumption, then power consumption is reduced, but image flicker occurs due to potential shifts in pixel electrodes
Solution Approach 1:
The patent applies preliminary anti-action by introducing a compensation capacitor that is pre-configured to counteract the potential shift in pixel electrodes. The capacitor is designed to provide compensating charge that opposes the capacitive coupling effect from data lines, thereby preventing image flicker before it occurs during low frame rate operation
Solution Approach 2:
The compensation capacitor serves as an intermediary element between the pixel electrode and the data lines. It mediates the electrical interaction by storing and releasing charge to offset the potential shifts caused by capacitive coupling, thereby isolating the pixel electrode from the harmful effects of data line voltage changes
2Device complexity
If data lines are positioned close to pixel electrodes for compact design, then device complexity is reduced, but capacitive coupling effects increase causing image flicker
Solution Approach 1:
The compensation capacitor acts as an intermediary that decouples the harmful capacitive interaction between data lines and pixel electrodes. By introducing this intermediate energy storage element, the patent allows close positioning of data lines while compensating for the resulting capacitive coupling effects
Solution Approach 2:
The patent changes the electrical parameters of the pixel electrode circuit by adding the compensation capacitor, which modifies the voltage-time characteristics and charge distribution. This parameter change enables the system to maintain stable pixel electrode potential despite close proximity to data lines
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
This configuration effectively reduces the potential shift of pixel electrodes at low frame rates, thereby minimizing image flicker and enhancing display quality.
Implementation Method 1
the current configuration of the pixel electrodes easily leads to capacitive coupling effects with adjacent signal lines
Data Source
AI summary
A display panel includes a substrate, first, second, and third data lines, scan lines, a first active device, a second active device, and pixel electrodes. The first and the third data lines have a first polarity. The second data line has a second polarity. The first polarity is different from the second polarity. A source electrode of the first active device disposed between the first data line and the second data line is electrically connected to the first data line. An extension region of the semiconductor pattern of the first active device extends toward and overlaps the second data line. A source electrode of the second active device disposed between the second data line and the third data line is electrically connected to the second data line. An extension region of the semiconductor pattern of the second active device extends toward and overlaps the third data line.