Display Panel Non-Display Area Height Reduction via 3D Wiring
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Solution Overview
Problem
Conventional display panels for portable electronic devices face challenges in minimizing the non-display area, particularly the overall height, while maintaining high image quality and low manufacturing costs, especially for amorphous silicon panels.
Innovation Solution
The method involves repositioning the drive chip's input and output pins closer to the display area and utilizing electrical connection points on the display panel to reduce the height of the non-display area, allowing for more efficient wiring arrangements and reduced space occupation, applicable to various panel types including amorphous silicon, low-temperature polysilicon, and AMOLED panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the drive chip is disposed in the non-display area with conventional wiring arrangement, then the electrical connection is established, but the overall height of the non-display area increases to about 4.2 mm
Solution Approach 1:
The patent changes the wiring arrangement from a planar layout to a three-dimensional configuration by routing connection lines through the thickness direction of the drive chip. This allows the wiring to pass through the drive chip body rather than occupying horizontal space, thereby reducing the overall height of the non-display area while maintaining electrical connectivity.
Solution Approach 2:
The connection lines are nested within the drive chip structure by routing them through the drive chip's internal pathways and through-holes. This nesting approach integrates the wiring into the existing drive chip volume, eliminating the need for separate wiring layers that would increase the non-display area height.
2Area of moving object
If the display area size is increased to ensure image quality, then the image quality improves, but the non-display area height becomes more significant relative to the overall device size
Solution Approach 1:
By routing connection lines through the thickness direction of the drive chip rather than horizontally across the non-display area, the patent enables the display area to expand horizontally without proportionally increasing the non-display area height. This dimensional change in wiring arrangement decouples the relationship between display area size and non-display area height.
3Length of stationary object
If a separate film is used to install the drive chip on LTPS panel, then the non-display area height can be reduced, but the manufacturing cost increases significantly
Solution Approach 1:
The drive chip structure is designed to be self-sufficient by integrating the connection line routing directly into the drive chip body through through-holes and internal pathways. This eliminates the need for additional separate films or complex external wiring structures, thereby reducing manufacturing cost while achieving height reduction.
Solution Approach 2:
The patent merges the drive chip and connection line routing into a single integrated structure. The connection lines are formed as part of the drive chip fabrication process rather than as separate components, combining multiple functions into one element and simplifying the manufacturing process.
Data Source
AI summary
A display panel of a portable electronic device and a method for designing the same are provided. A display module includes a display panel, a drive chip and a flexible circuit board. The display panel includes a display area and a non-display area, and the drive chip corresponds to the non-display area of the display panel. The display panel is provided with an electrical connection point for connecting with the flexible circuit board, and the electrical connection point corresponds to a side of the drive chip so as to reduce a height of the non-display area of the display panel. The display panel and the method for designing the display panel are suitable for display panels of various materials, which can reduce the height of the non-display area, improve the integration of the display panel, enhance the portable performance of the electronic device, and maintain a lower manufacturing cost.