Display Device Sensing Units Overlap Driving Circuit
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Solution Overview
Problem
Existing display devices fail to provide satisfactory display quality and size reduction while integrating fingerprint identification functionality effectively.
Innovation Solution
A display device design that includes a substrate with a driving circuit, sensing units, and display units, where the sensing units overlap the semiconductor layer of the driving circuit, allowing for reduced size and maintaining high resolution by positioning the sensing units between the driving circuit and display units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sensing units are disposed separately from the driving circuit, then the sensing functionality can be provided, but the device size increases and integration density decreases
Solution Approach 1:
The sensing units are merged with the driving circuit by disposing them in overlapping regions, specifically in the region where the driving circuit's signal line extends. This integration allows the sensing function to be incorporated without increasing the overall device area, as the sensing units share the same spatial footprint with the driving circuit components.
Solution Approach 2:
The sensing units are positioned in a different spatial layer or plane relative to the driving circuit, utilizing the overlapping region conceptually as a two-dimensional solution. By allowing the sensing units to overlap with the signal line region of the driving circuit, the patent effectively uses vertical or layered spatial arrangement to achieve integration without horizontal area expansion.
2Area of stationary object
If the display device is reduced in size, then portability improves, but display quality and sensing precision may deteriorate
Solution Approach 1:
The patent applies local quality by optimizing the specific region where sensing units and driving circuit overlap. The sensing units are strategically positioned to overlap with the signal line region of the driving circuit, allowing high-density integration in this specific local area while maintaining overall display quality. This localized optimization enables size reduction without compromising global display performance.
3Area of stationary object
If sensing units overlap the semiconductor layer of the driving circuit, then area is reduced, but signal interference and manufacturing complexity increase
Solution Approach 1:
The patent introduces an intermediary approach by utilizing the existing signal line region of the driving circuit as the placement area for sensing units. This intermediary region acts as a shared space that accommodates both driving circuit functionality and sensing units, reducing the need for additional separate areas while managing signal interference through careful spatial arrangement and electrical isolation techniques.
Data Source
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AI summary
A display device is provided. The display device includes a substrate. The display device also includes a driving circuit disposed on the substrate. The driving circuit includes a semiconductor layer. The display device further includes a plurality of sensing units disposed on the driving circuit. In addition, the display device includes a plurality of display units driven by the driving circuit. At least one of the sensing units overlaps the semiconductor layer of the driving circuit.