Display Device Rear Surface Driver Mounting
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Solution Overview
Problem
Conventional display devices require a larger thin film transistor substrate to accommodate a driver mounting region, resulting in a wider frame and reduced productivity due to the need for non-overlapping substrates.
Innovation Solution
A display device with a first glass substrate featuring through-holes for wiring and terminals on the rear surface, allowing drivers to be mounted on the rear surface of the thin film transistor substrate, eliminating the need for a separate driver mounting region and enabling overlapping substrates, thus narrowing the frame and improving productivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the driver mounting region is provided on the front surface of the thin film transistor substrate, then the driver can be mounted and connected, but the frame region area increases resulting in a wider frame
Solution Approach 1:
The patent applies dimensionality change by moving the driver mounting region from the front surface (2nd dimension plane) to the rear surface of the thin film transistor substrate, utilizing the third dimension (depth/thickness) to resolve the spatial conflict between driver mounting space and frame region area
2Ease of operation
If the thin film transistor substrate is formed wider than the color filter substrate to accommodate the driver mounting region, then the driver can be mounted, but the substrates cannot overlap and productivity decreases
Solution Approach 1:
The patent utilizes the rear surface of the thin film transistor substrate for driver mounting, enabling the front surfaces of both substrates to overlap completely during assembly, which simplifies the manufacturing process and improves productivity
3Ease of operation
If the thin film transistor substrate is formed in a different shape than the color filter substrate to include the driver mounting region, then the driver can be mounted, but the frame region area increases
Solution Approach 1:
The patent maintains identical rectangular shapes for both the thin film transistor substrate and color filter substrate by relocating the driver mounting region to the rear surface, eliminating the need for asymmetric or extended substrate geometries
Data Source
AI summary
A display device according to a present disclosure comprises: a first glass substrate including a through-hole; a wiring disposed in a first main surface of the first glass substrate; and a terminal formed in a second main surface of the first glass substrate and electrically connected to the wiring through the through-hole.