Narrow Bezel Flat Display Panel with Integrated Conductive Sealing
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Solution Overview
Problem
Flat panel displays, particularly those using the IPS mode LCD, face challenges with narrow view angles, low aperture ratio, and transmittance due to the gap between the common and pixel electrodes, which affect the display area efficiency and bezel width.
Innovation Solution
A flat panel display design with a narrow bezel structure is achieved by minimizing the area for the common line and forming the gate driving circuit directly on the substrate, using a conductive sealing material to connect common lines and reduce the bezel area, and integrating the function of the vertical common line into the sealing region with conductive sealant to minimize the bezel width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a separate common line structure is used in IPS mode LCD, then the common electrode can be properly connected, but the bezel width increases and display area efficiency decreases
Solution Approach 1:
The patent merges the common line structure with the sealing structure by making the sealing material conductive. The conductive sealing material serves dual purposes: sealing the edge of the display panel and providing the common voltage connection to the common electrode, thereby eliminating the need for a separate common line and reducing bezel width.
Solution Approach 2:
The sealing material is given multiple functions: it performs the traditional sealing function to protect the display panel edges, and simultaneously serves as the common voltage transmission path to the common electrode. This multi-functionality reduces the overall space required and minimizes the bezel area.
2Length of stationary object
If the common line area is minimized, then the bezel width is reduced, but the electrical connection reliability may be compromised
Solution Approach 1:
By combining the sealing function and common voltage transmission function into a single conductive sealing structure, the patent eliminates the need for additional common line space while maintaining reliable electrical connection through the continuous conductive material that seals the panel edge.
3Area of stationary object
If conductive sealing material is used, then the common line function is integrated into the sealing region, but the manufacturing complexity increases
Solution Approach 1:
The patent combines two manufacturing processes into one by using conductive sealing material that simultaneously seals the panel and establishes electrical connection. This integration reduces the number of separate manufacturing steps and materials required, thereby simplifying the overall manufacturing process despite the functional integration.
Data Source
AI summary
The present disclosure relates to reducing bezel area of a flat display panel comprising a substrate with a non-display area surrounding a display area, the display area comprising common lines coupled to corresponding rows of pixels; and a gate driver formed in the non-display area. The display may further include a conductive sealing region formed in the non-display area and configured to supply a common line voltage; and a plurality of common pads formed within the conductive sealing region and each coupled to a corresponding one of the common lines to apply a common line voltage to the rows of pixels. Alternatively, the display may further include a vertical common line formed in the non-display area between the gate driver and the display area, the vertical common line extending from top to bottom of the non-display area and coupled to said common lines to apply a common voltage.