Under-Display Sensor Layout With Shielding Lines for Edge Visibility
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Solution Overview
Problem
Existing multimedia electronic devices face challenges in optimizing display area utilization and improving display quality, particularly in reducing non-display areas and enhancing visibility.
Innovation Solution
The electronic device incorporates a display layer with first and second display areas, a drive circuit overlapping the second area, and a sensor layer with sensing and non-sensing areas, featuring shielding lines and antistatic lines to enhance display quality and sensor functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the display area is expanded to meet market demand, then visibility and display quality are improved, but the complexity of integrating sensor layers and drive circuits increases
Solution Approach 1:
The patent transitions from a planar display structure to a multi-layer three-dimensional structure by stacking the sensor layer, drive circuit layer, and display layer vertically. This allows the display area to be expanded in the horizontal plane while managing complexity through vertical integration, where each layer performs its function independently without increasing overall device footprint.
Solution Approach 2:
The drive circuit is integrated within the display layer structure, and the sensor layer is nested above the display layer. This nested arrangement allows multiple functional components to coexist within the same device envelope, expanding display capabilities while containing complexity within a compact multi-layer architecture.
2Reliability
If shielding lines are added to improve display quality and reduce interference, then display quality is improved, but the complexity of the sensor layer increases
Solution Approach 1:
The shielding line acts as an intermediary element between the sensor layer and the drive circuit layer. It mediates the electromagnetic interference issue by providing a conductive barrier that redirects or absorbs interfering signals, thereby improving display quality while adding only a single conductive layer rather than complex shielding structures.
Solution Approach 2:
The shielding line modifies the electrical parameter distribution in the sensor layer by introducing a conductive path that changes the electromagnetic field characteristics. This parameter change (adding conductivity in specific regions) effectively reduces interference and improves display quality without fundamentally altering the sensor layer's structural complexity.
3Area of stationary object
If the non-display area is reduced to optimize area utilization, then area efficiency is improved, but the space for drive circuits and sensing areas is reduced
Solution Approach 1:
The patent resolves the area conflict by moving the drive circuit from a lateral arrangement to a vertical stacking arrangement. The drive circuit layer is positioned beneath the display layer, allowing the display area to extend to the edges of the device while the drive circuit occupies the vertical space, thereby maximizing horizontal area utilization without sacrificing drive circuit functionality.
Data Source
AI summary
An electronic device includes a display layer including a first display area in which a plurality of first pixels are disposed and a second display area in which a plurality of second pixels are disposed, a drive circuit that overlaps the second display area in a plan view, and a sensor layer disposed on the display layer and including a sensing area and a non-sensing area. The sensor layer includes a plurality of sensing electrodes disposed in the sensing area and a shielding line disposed in the non-sensing area and commonly overlapping some of the plurality of second pixels adjacent to a corner of the second display area in a plan view.