Display Panel Bonding Area Pad Arrangement for Narrow Border
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display panels face challenges in integrating fingerprint identification, display, and touch functions within a narrow border and high screen ratio design, as these functions occupy significant space in the border area, contradicting the trend of increasing screen ratio and reducing borders.
Innovation Solution
A display panel design with a non-display area featuring a bonding area divided into three sections, where flexible printed circuits or integrated circuits are bound, incorporating multiple types of pads (display, touch, and fingerprint identification pads) arranged alternately to reduce wiring length and width, allowing for the integration of functions while minimizing border width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fingerprint identification, display, and touch functions are provided in different integrated circuits, then each function can be independently implemented, but the border area occupies significant space, reducing screen ratio
Solution Approach 1:
The patent merges fingerprint identification, display, and touch functions into a single integrated circuit located in the non-display area. This consolidation eliminates the need for multiple separate circuits and their associated connection wiring, thereby reducing the border area occupation and increasing the screen ratio while maintaining all required functions.
Solution Approach 2:
The integrated circuit in the non-display area is designed to perform multiple functions simultaneously: display control, touch sensing, and fingerprint identification. This multi-functional approach allows a single circuit to replace what would traditionally require three separate circuits, reducing the overall space required in the border area.
2Length of stationary object
If multiple types of pads are arranged in the bonding area, then wiring length and width are reduced, but the bonding area structure becomes more complex
Solution Approach 1:
The patent applies different pad types (first pads for display, second pads for touch, third pads for fingerprint identification) in specific locations within the bonding area. Each pad type is strategically positioned to connect with corresponding circuit elements, optimizing wiring paths and reducing overall wiring length while managing structural complexity through localized functional assignment.
Data Source
AI summary
A display panel, having a display area where display units, touch electrodes, and fingerprint identification units are arranged, and a non-display area including first to third bonding areas, the second and third bonding areas being located on two sides of the first bonding area, respectively. First pads, second pads, and third pads are arranged in the bonding areas, and the number of the first pads is greater than the number of the third pads, and the number of the second pads is greater than the number of the third pads. One or more first pads, one or more second pads, and one or more third pads are arranged in the first bonding area alternately. Each of the second bonding area and the third bonding area is provided with one or more first pads and one or more second pads. A display device includes the display panel.