Display Panel Peripheral Signal Routing for Optical Transmission Areas
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Solution Overview
Problem
Portable electronic devices face challenges in minimizing the non-display region while maximizing the display region, as existing designs often require larger bezel areas for signal transmission and optical signal blocking, which reduces the effective display area.
Innovation Solution
The design incorporates a display panel with distinct regions, including a second panel region that allows optical signal propagation and has higher light transmittance, and a circuit element layer with signal lines and pixel driving circuits strategically positioned to minimize the non-display region by reducing the area required for signal lines and bezels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If signal lines and pixel driving circuits are disposed in the first panel region, then electrical signal transmission is ensured, but the display region is reduced and the non-display region is enlarged
Solution Approach 1:
The patent moves signal lines from the horizontal plane (first panel region) to the vertical dimension by routing them through the third panel region (peripheral area) and using connection lines that extend along the periphery. This spatial reconfiguration allows electrical signals to reach pixels without occupying display area, effectively resolving the conflict between signal transmission reliability and display region size.
Solution Approach 2:
The patent introduces connection lines as intermediary elements that bridge the gap between the peripheral signal lines (in the third panel region) and the pixel elements. These connection lines act as mediators that transmit signals without requiring the signal lines to directly occupy the display region, thus maintaining signal transmission while maximizing display area.
2Reliability
If the second panel region is designed to allow optical signal propagation, then optical functionality is improved, but the structural complexity increases
Solution Approach 1:
The second panel region is designed to serve multiple functions: it allows both electrical signal transmission and optical signal propagation. By making this region multi-functional, the patent avoids the need for separate dedicated regions for each function, thereby reducing overall structural complexity while maintaining optical performance.
Solution Approach 2:
The patent merges the electrical signal transmission function and optical signal propagation function into the same second panel region. This consolidation eliminates the need for separate structural elements for each function, simplifying the overall panel design while ensuring both electrical and optical signals can pass through the display region efficiently.
3Area of stationary object
If signal lines are routed through the third panel region along the periphery, then the display region is maximized, but the signal transmission path length increases
Solution Approach 1:
The patent employs dynamic routing strategies where connection lines adaptively connect to the nearest available signal lines in the third panel region. This dynamic connection approach optimizes the transmission path length by minimizing unnecessary extensions, thereby reducing signal loss and power consumption while maintaining maximum display area.
Solution Approach 2:
The signal lines are pre-positioned in the third panel region along the periphery during the design phase, with connection points strategically located to minimize the length of connection lines required. This preliminary arrangement of signal transmission paths reduces the overall path length that signals must travel through the display region, improving transmission efficiency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables a larger display region and a smaller non-display region, enhancing the visual experience and reducing the physical size of the device while maintaining efficient signal transmission and optical functionality.
Implementation Method 1
The second panel region is configured to allow propagation of an optical signal
Data Source
AI summary
A display panel includes a first panel region (FPR) including (n−1)-th and n-th pixel rows ((n−1)PR and nPR), and a second panel region (SPR) dividing the nPR to propagate an optical signal. The display panel includes a circuit element layer (CEL) and a display element layer (DEL). The CEL includes a signal line (SL), a pixel driving circuit (PDC), and first to third regions. The SL and the PDC are in the first region. The second region (SR) corresponds to the SPR. The SL and the PDC are not in the SR. The third region (TR) corresponds to the SPR and is along a periphery of the SR. The SL is in the TR, and includes an (n−1)-th scan line ((n−1)SL) connected to the (n−1)PR, an n-th reset line (nRL) connected to the nPR, and a first row connection line in the TR and connecting the (n−1)SL and the nRL.