OLED Display Panel Transparent Area Wire Exchange
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Solution Overview
Problem
The placement of front cameras, ambient light sensors, earpieces, and other light-sensing devices on full-screen OLED mobile phone designs is challenging due to the complexity of the profiled cutting process, which affects the screen ratio and reliability.
Innovation Solution
An OLED display panel design that includes a display area, a transparent area for device placement, and a wire exchange area where a metal wire from the display area is electrically connected to a high light-transmissive metal wire through a via-hole, allowing the high light-transmissive metal wire to extend to the transparent area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If profiled cutting is used to place devices on the front side, then device placement is achieved, but the cutting process becomes complex and package reliability deteriorates
Solution Approach 1:
The patent transitions from a planar display structure to a three-dimensional structure by creating a transparent area that extends through multiple layers. Devices are placed in this transparent area rather than through cutting, utilizing the Z-dimension (depth) to accommodate components while maintaining display functionality. This dimensional change eliminates the need for profiled cutting and its associated reliability issues.
Solution Approach 2:
The patent introduces a transparent area as an intermediary structure between the display area and device placement area. This transparent area serves as a mediator that allows light to pass through while providing a structural framework for mounting devices. The high light-transmissive metal wires act as intermediaries to extend electrical connections into this transparent area without compromising optical performance.
2Area of stationary object
If profiled cutting is used to achieve full screen design, then screen ratio is improved, but the cutting process complexity increases
Solution Approach 1:
The patent segments the display panel into distinct functional areas: a display area for image output, a transparent area for device placement, and a wire exchange area for electrical connections. This segmentation allows each area to be optimized independently, enabling high screen ratio without requiring complex cutting processes to integrate different functional zones.
Solution Approach 2:
The patent utilizes the vertical dimension to resolve the conflict between screen ratio and process complexity. By extending metal wires vertically through via-holes from the display area into the transparent area, the design achieves full-screen connectivity without requiring complex lateral cutting operations, thereby simplifying the manufacturing process while maintaining high screen ratio.
3Reliability
If regular metal wires are used in the transparent area, then electrical connection is achieved, but light transmissivity deteriorates
Solution Approach 1:
The patent changes the material parameters of the metal wires used in the transparent area. Specifically, it selects metal wire materials and dimensions that optimize the balance between electrical conductivity and light transmissivity. The wire dimensions and material composition are carefully controlled to minimize optical interference while ensuring reliable electrical connections for device operation.
Solution Approach 2:
The patent applies different wire characteristics to different areas of the display panel. In the display area, standard metal wires are used for optimal electrical performance, while in the transparent area, specially designed high light-transmissive metal wires are used. This local differentiation ensures that each area has the appropriate properties for its specific function, maintaining both electrical reliability and optical performance where needed.
Data Source
AI summary
An organic light-emitting diode display panel includes a display area, a transparent area, and a wire exchange area. The display area is used for displaying an image; the transparent area is used for placing a device, and the wire exchange area is positioned at a wire connecting site between the display area and the transparent area, wherein a metal wire from the display area is electrically connected to a high light-transmissive metal wire through a via-hole at the wire exchange area, and the high light-transmissive metal wire extends to the transparent area.