Under-Display Optical Area Signal Routing for Camera Light Transmittance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices face challenges in improving the luminosity and performance of areas where camera modules or sensors are disposed, particularly due to the presence of signal lines that obstruct light transmission.
Innovation Solution
The display device design includes a substrate with optical areas where signal lines are detoured around the camera module or sensor, eliminating their presence within these areas to enhance light transmittance and improve the performance of the camera module or sensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If signal lines are disposed in the optical area to connect pixels, then electrical connectivity is ensured, but light transmittance is reduced and camera module performance deteriorates
Solution Approach 1:
The patent extracts signal lines from the optical area by routing them through edge regions, completely removing their presence from the camera module area. This extraction eliminates the conflict between electrical connectivity needs and light transmittance requirements, allowing the optical area to be fully optimized for light transmission while signal lines serve their function in peripheral regions.
Solution Approach 2:
The patent transitions signal line routing from a two-dimensional plane (across the display area) to a three-dimensional path by utilizing edge regions and creating detour routes. This dimensional change allows signal lines to bypass the optical area entirely, resolving the spatial conflict between electrical connections and optical performance.
2Device complexity
If signal lines are routed through the optical area, then device complexity is reduced, but camera module performance and luminosity are compromised
Solution Approach 1:
The patent segments the display area into distinct functional zones: optical areas (including camera module areas) and non-optical edge areas. Signal lines are confined to edge areas, creating a clear spatial segmentation that prevents interference with optical performance while maintaining electrical connectivity functions.
Solution Approach 2:
The patent introduces edge regions as intermediary zones that serve as buffer areas between the optical display area and the non-display area. These intermediary regions provide dedicated pathways for signal lines, acting as mediators that satisfy electrical connectivity requirements without compromising the optical performance of the main display area.
3Reliability
If a notch or punch hole is used to accommodate camera module, then camera performance is improved, but display area is reduced and visual appearance is compromised
Solution Approach 1:
The patent applies local quality optimization by creating an optical area with enhanced light transmittance properties specifically in the camera module region, while maintaining normal signal line routing in other areas. This localized optimization allows the camera module to achieve high performance without requiring physical notches or punch holes, preserving the full display area.
Data Source
AI summary
A display device includes a substrate which includes a display area including at least one optical area and a normal area and including a plurality of pixels and a non-display area and a plurality of signal lines extending from both sides of the display area to the plurality of pixels in a row direction, wherein the plurality of signal lines includes a first signal line and a second signal line which are disposed on different rows on both sides of the optical area and transmit the same signal and a detour line which is connected to the first signal line and the second signal line on the both sides of the at least one optical area and detours the at least one optical area.