Array Substrate Dual-Surface Driving Circuits Narrow Bezel
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Solution Overview
Problem
Smart watches with display functions face limitations in screen proportion due to the occupation of space by driving circuits and peripheral circuits, which typically occupy non-display regions at the peripheries of the array substrate, making it challenging to achieve a larger display area.
Innovation Solution
The array substrate design features first and second signal lines on the base substrate, with driving circuits positioned on both surfaces, utilizing connecting lines and vias to integrate the circuits within the display region, allowing for a bezel-free or narrow bezel design by optimizing the placement of driving circuits and signal lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If driving circuits and peripheral circuits are placed at the peripheries of the array substrate, then the circuits can be properly positioned for driving the display, but the screen proportion is limited due to occupation of non-display region
Solution Approach 1:
The patent utilizes both the front surface and back surface of the array substrate to position driving circuits. Specifically, the first driving circuit is positioned on the front surface while the second driving circuit is positioned on the back surface, effectively utilizing three-dimensional space rather than being constrained to a single plane. This dimensional transition allows circuits to be integrated within the display region without occupying peripheral non-display areas, thereby increasing screen proportion while maintaining proper circuit positioning.
2Area of stationary object
If driving circuits are positioned within the display region, then the screen proportion increases, but the circuit connection and signal transmission become more complex
Solution Approach 1:
The patent divides the driving circuits into two separate functional units: a first driving circuit positioned on the front surface and a second driving circuit positioned on the back surface. Each driving circuit handles specific signal transmission tasks independently. This segmentation allows for simplified manufacturing and connection processes compared to integrating all circuits in a single complex unit, while still achieving high screen proportion by positioning circuits within the display region.
Solution Approach 2:
The patent introduces signal transmission lines that extend from the front surface through the substrate to the back surface, serving as intermediaries between the first driving circuit and the second driving circuit. These intermediary transmission lines facilitate efficient signal routing between the two surfaces, simplifying the connection process while enabling the driving circuits to be positioned within the display region for increased screen proportion.
Data Source
AI summary
An array substrate and a wearable device are provided. The array substrate includes a base substrate. A first surface of the base substrate is provided with a plurality of first signal lines having a concentric arc shape and a plurality of second signal lines linearly arranged along a radial direction of the first signal lines. A first driving circuit connected to the respective first signal lines is provided on the first surface or a second surface of the base substrate and a second driving circuit connected to the respective second signal lines is provided on the first surface or a second surface of the base substrate. In the array substrate, since the first driving circuit and the second driving circuit are both positioned within a display region, the screen proportion of the display region is improved, thereby achieving a narrow bezel design or even bezel-free design for the wearable device.