Display Panel Shielding Structure for Frameless Design
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Solution Overview
Problem
Traditional liquid crystal displays (LCDs) cannot achieve a true four-sided frameless design due to the presence of a bonding area, which results in color inconsistencies and visual differences on the edges, making it impossible to maintain a consistent appearance across all sides.
Innovation Solution
A display panel design that incorporates a shielding structure with a toner layer, hidden under the first polarizer, which covers the bonding area and is connected to the array substrate, along with a flexible circuit board and decorative coating layer, ensuring the shielding structure is flush with the polarizer and maintaining edge color consistency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a bonding area is present on the ground side to satisfy internal wiring requirements, then the LCD panel can achieve no frame on three sides, but the ground side cannot achieve no-frame due to the existence of the bonding area, resulting in color inconsistency and visual difference
Solution Approach 1:
The patent extracts the bonding area from the visible front surface by positioning it at the back of the display panel. The shielding structure covers the bonding area, separating it from the visual field, while the flexible circuit board extends to the side to maintain electrical connections without affecting the front appearance.
Solution Approach 2:
The patent applies different properties to different regions: the front surface maintains a uniform, frameless appearance with consistent color, while the bonding area at the back is specifically designed with shielding and flexible circuit board integration to handle wiring requirements. This local differentiation resolves the contradiction between aesthetic uniformity and functional wiring needs.
2Shape
If a metal decorative strip is arranged on the ground side as the front frame to ensure appearance surface is flush, then the appearance is improved, but the color of the front frame cannot be consistent with the color of the panel, creating visual color difference
Solution Approach 1:
The patent removes the need for a metal decorative strip by extracting the bonding area to the back surface. The shielding structure with toner layer covering the bonding area provides a color-matched appearance that is consistent with the panel, eliminating the visual discontinuity that would require a decorative frame.
Solution Approach 2:
The patent applies a toner layer to the shielding structure at the bonding area to match the panel color locally. This creates a uniform appearance across the entire front surface without requiring a contrasting metal decorative strip, thus maintaining both appearance flushness and color consistency.
3Shape
If a shielding structure is added to cover the bonding area and achieve four-sided frameless design, then the visual effect is improved, but the manufacturing process complexity increases
Solution Approach 1:
The patent merges multiple functions into the shielding structure: it serves as both the structural element covering the bonding area and the mounting base for the toner layer. The flexible circuit board is integrated with the shielding structure, combining electrical connection and mechanical support functions, thereby reducing overall manufacturing complexity.
Solution Approach 2:
The shielding structure performs multiple functions simultaneously: it shields the bonding area, provides a mounting surface for the toner layer, supports the flexible circuit board, and contributes to the overall structural integrity. This multi-functionality reduces the need for separate components and simplifies the manufacturing process.
Data Source
AI summary
A display panel, a manufacturing method of the display panel, and a display device are disclosed. The display panel includes an array substrate with an adjacent pixel circuit area and a bonding area, a color film substrate arranged opposite to the pixel circuit area of the array substrate, a shielding structure covering the bonding area and fixedly connected with at least the array substrate located in the bonding area, and a first polarizer located on the color film substrate and the shielding structure. A side of the first polarizer close to the bonding area is flush with a side of the shielding structure.