Transparent Display Panel Signal Layout to Reduce Haze
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Solution Overview
Problem
Transparent display devices using electroluminescent diodes face issues with light scattering due to signal lines passing through transparent areas, resulting in high haze and poor display clarity.
Innovation Solution
The display panel design arranges data, detection, and fixed voltage signal lines around and between pixel units, avoiding the transparent areas to minimize reflective metal and maximize transmittance, thereby reducing haze and improving display effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If signal lines are arranged in transparent areas to connect pixel units, then electrical connectivity is achieved, but light scattering increases causing high haze and poor transparent display effect
Solution Approach 1:
The patent extracts signal lines from transparent areas and relocates them to non-transparent areas or column gaps. Data signal lines are positioned in non-transparent areas between sub-pixels, while detection signal lines are placed in column gaps between pixel units. This separation removes the harmful reflective metal from transparent regions, eliminating light scattering while preserving electrical connectivity through alternative routing paths.
Solution Approach 2:
The patent utilizes the column gap dimension between adjacent pixel units to route detection signal lines. Instead of placing all signal lines within the pixel unit boundaries, it extends routing into the inter-pixel column gaps, creating an additional spatial dimension for signal transmission that avoids transparent areas while maintaining connectivity.
2Illumination intensity
If transparent areas are maximized for better transparency, then transmittance improves, but signal line routing becomes more difficult
Solution Approach 1:
The patent segments signal line routing into different spatial zones: data signal lines are routed in non-transparent areas within pixel units, detection signal lines are routed in column gaps between pixel units, and fixed voltage signal lines are positioned adjacent to pixel circuits. This segmentation allows transparent areas to be maximized while signal lines are distributed across multiple routing zones, reducing routing complexity within each zone.
3Object-affected harmful factors
If signal lines are removed from transparent areas to reduce haze, then transparent display effect improves, but electrical connectivity to sub-pixels must be maintained
Solution Approach 1:
The patent introduces non-transparent areas and column gaps as intermediary zones for signal line routing. These intermediary regions serve as mediation between the requirement for electrical connectivity and the need to eliminate light scattering from transparent areas. Detection signal lines in column gaps and data signal lines in non-transparent areas act as intermediaries that maintain connectivity without interfering with transparent display performance.
Data Source
AI summary
Disclosed are a display panel and a display device. The display panel includes a base substrate; a plurality of data signal lines on the base substrate, and a plurality of pixel units; and each pixel unit has a transparent area and a non-transparent area; the pixel unit includes a plurality of sub-pixels in the non-transparent area. All sub-pixels in the display panel are arranged in an array, each column of sub-pixels corresponds to a respective one of the data signal lines, and at least part of the data signal lines are arranged around the transparent areas.