Display Shield Electrode Bezel Width Signal Interference
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Solution Overview
Problem
Existing narrow bezel technologies for liquid crystal displays face technical limitations in fine processing, leading to inefficiencies in minimizing the bezel region and potential signal interference issues between the pixel electrode and vertical scan line.
Innovation Solution
The implementation of a display device with vertical and horizontal lines, including a shield electrode to shield signal interference between the pixel electrode and the vertical scan line, and a driver system that minimizes the number of lines in the bezel region by integrating the scan driver on a chip on film (COF) connected to the liquid crystal display panel, allowing for efficient signal transfer and reduced bezel width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the number of lines in the bezel region is reduced to minimize the bezel width, then the bezel region is minimized, but signal interference between the pixel electrode and vertical scan line increases
Solution Approach 1:
A shield electrode is introduced as an intermediary component between the pixel electrode and the vertical scan line. This shield electrode acts as a mediator to block or reduce the electromagnetic signal interference that occurs between these two conductive elements, allowing the lines to be positioned closer together without suffering from harmful interference effects.
Solution Approach 2:
The scanning driver is extracted from the traditional bezel region and integrated onto a chip-on-film (COF) structure positioned at the edge of the display panel. This extraction removes the need for scan lines to traverse the entire bezel region, significantly reducing the bezel width while maintaining proper scanning functionality through the COF integration.
2Length of stationary object
If the scan driver is integrated on chip on film (COF) to reduce bezel width, then the bezel region is minimized, but manufacturing complexity increases
Solution Approach 1:
The scan driver circuitry is merged with the film substrate to create an integrated chip-on-film structure. This combining of the driver circuit and substrate into a single integrated component simplifies the overall manufacturing process by reducing the number of separate assembly steps, while still achieving the goal of minimizing bezel width through compact integration.
3Object-affected harmful factors
If the shield electrode is added to prevent signal interference, then signal interference is reduced, but device complexity increases
Solution Approach 1:
The shield electrode is designed to serve multiple functions simultaneously: it acts as an electromagnetic shield to block signal interference between the pixel electrode and vertical scan line, while also potentially serving as a structural support element or an additional electrostatic control element within the display panel architecture. This multi-functionality reduces the need for separate dedicated components.
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 solution effectively minimizes the bezel region and reduces signal interference, enhancing the display's performance and allowing for a more compact design while maintaining effective signal shielding, even when the scan signal is overlapped.
Implementation Method 1
the display panel include a shield electrode for shielding a signal interference between the pixel electrode and the vertical scan line
Data Source
AI summary
A display device includes a display panel having vertical lines and horizontal lines formed thereon; sub-pixels; and a driver supplying a data signal and a scan signal to the sub-pixels through the vertical lines and horizontal lines, the vertical lines include a vertical data line to which the data signal is supplied and a vertical scan line to which the scan signal is supplied, the horizontal lines are connected to the vertical scan line and include a horizontal scan line transferring the scan signal in a horizontal direction, and the display panel include a shield electrode for shielding a signal interference between the pixel electrode and the vertical scan line.