Shielding Electrode for Display Device Bezel Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices face electrical effects due to additional wires, which can hinder performance and increase bezel area, particularly when the driver is relocated from the sides to the top, affecting signal transmission and pixel voltage application.
Innovation Solution
The display device incorporates a shielding electrode with a main electrode portion overlapping the pixel electrode and a bridge portion connecting adjacent main electrode portions, which are narrower than the gate voltage supply line, positioned between the data line and pixel electrode to minimize electrical interference and reduce bezel area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the driver is relocated from the sides to the top to reduce bezel area, then the bezel area is reduced, but electrical effects occur due to additional wires connecting the driver to pixels
Solution Approach 1:
A shielding electrode is introduced as an intermediary component between the gate voltage supply line and the pixel electrode. This shielding electrode acts as a mediator that blocks or reduces the electrical effects (such as parasitic capacitance or electromagnetic interference) generated by the gate voltage supply line, thereby resolving the harmful electrical effects while maintaining the top-driven configuration that reduces bezel area.
2Area of stationary object
If additional wires are added to connect the top driver to pixels, then the driver can be relocated to reduce bezel area, but signal transmission quality deteriorates due to electrical interference
Solution Approach 1:
The shielding electrode serves as a protective intermediary that improves signal transmission reliability by blocking electrical interference from the gate voltage supply line. This allows the top-driven configuration to be maintained without compromising signal quality, thus resolving the contradiction between bezel reduction and signal transmission reliability.
3Device complexity
If the gate voltage supply line is positioned closer to the pixel electrode to reduce wiring complexity, then device complexity is reduced, but electrical interference with the pixel increases
Solution Approach 1:
The shielding electrode is positioned between the gate voltage supply line and the pixel electrode, acting as a protective barrier. This allows the gate voltage supply line to be positioned closer to the pixel electrode (reducing wiring complexity) while the shielding electrode prevents electrical interference from reaching the pixel, thus resolving the contradiction between reduced wiring complexity and minimized electrical interference.
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 prevents electrical effects caused by additional wires while reducing the bezel area, enhancing signal transmission and pixel voltage application efficiency.
Implementation Method 1
a shielding electrode disposed on the passivation layer... to prevent an electrical effect caused by an additional wire
Data Source
AI summary
A display device includes: a substrate; a gate line disposed on the substrate and extending in a first direction; a gate insulating layer disposed on the gate line; a data line disposed on the gate insulating layer and extending in a second direction crossing the first direction; a gate voltage supply line disposed on the gate insulating layer and extending in the second direction, the gate voltage supply line connected to the gate line; a passivation layer disposed on the data line and the gate voltage supply line; a shielding electrode disposed on the passivation layer; an insulating layer disposed on the shielding electrode; and a pixel electrode disposed on the insulating layer and overlapping the shielding electrode.