Flexible Circuit Board Bending for Narrow Non-Display Area
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Solution Overview
Problem
Existing display technologies face challenges in increasing the screen occupancy ratio, which is essential for providing a better user experience with wider viewing angles, higher resolution, and higher screen occupancy ratios.
Innovation Solution
A display device with a flexible circuit board that includes binding areas on opposite sides of the display panel, allowing the flexible circuit board to be bent and bound to these areas, thereby reducing the width of the non-display area and increasing the screen occupancy ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the non-display area is reduced to increase screen occupancy ratio, then the screen occupancy ratio is improved, but the binding reliability and electrical connection stability deteriorate
Solution Approach 1:
The patent divides the binding function into two separate binding areas located at opposite sides of the display panel along the first direction. The flexible circuit board is correspondingly divided into a first binding end and a second binding end, each independently bound to respective binding areas. This segmentation allows the binding functions to be distributed across the non-display area, reducing the width required for each individual binding area while maintaining overall binding reliability.
Solution Approach 2:
The patent introduces a first direction that is parallel to the plane of the display panel, extending along the width direction. By positioning binding areas at opposite sides along this first direction, the solution transforms the binding arrangement from a single-location configuration to a distributed configuration across the width dimension, effectively utilizing the available space and reducing the required width of the non-display area.
2Area of stationary object
If the non-display area is reduced to increase screen occupancy ratio, then the screen occupancy ratio is improved, but the risk of short circuits increases
Solution Approach 1:
The patent segments the electrical connection path into two separate binding ends located at opposite sides of the display panel. This segmentation spatially separates the binding areas, increasing the distance between potential short circuit points and reducing the risk of short circuits while still achieving a reduced non-display area width.
Solution Approach 2:
The flexible circuit board acts as an intermediary element that is bent and extended to connect the driving chip to the binding areas. The bending configuration of the flexible circuit board provides natural isolation and protection against short circuits while maintaining electrical connectivity, serving as a protective intermediary between the driving chip and the binding areas.
3Area of stationary object
If the binding areas are positioned at opposite sides of the display panel, then the screen occupancy ratio is improved, but the device complexity increases
Solution Approach 1:
The patent employs a flexible circuit board that can be bent and shaped to extend from the back surface to the front surface of the display panel. This flexible thin film structure simplifies the overall device configuration by using a single continuous component that can be molded into the required shape, rather than requiring multiple rigid components and complex assembly structures.
Solution Approach 2:
The flexible circuit board is designed with a bending configuration that allows it to dynamically adapt to the spatial requirements of connecting opposite sides of the display panel. The bent and extended structure provides a straightforward implementation that reduces device complexity compared to rigid alternative configurations.
Data Source
AI summary
Provided are a display device and a display device. The display device includes: a display panel, including display area and non-display area surrounding display area; and a flexible circuit board. The non-display area includes first binding area and second binding area located on two opposite sides of display area along first direction, which is parallel to the display panel. The display panel has display surface and back surface. The flexible circuit board is disposed on back surface of display panel. A driving chip is fixed on the flexible circuit board. The flexible circuit board has first end and second end. When the flexible circuit board is in bent state, first end is bent and then extended to display surface of the display panel and bound to first binding area, and second end is bent and then extended to display surface of the display panel and bound to second binding area.