Display Substrate Signal Routing for In-Screen Camera Clarity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display substrates with in-screen sensors face challenges in transmittance and image quality due to the presence of light emitting elements and data lines, which block or diffract light, leading to reduced image quality and ghosting effects.
Innovation Solution
A display substrate design with a first display region having a lower unit area distribution density of light emitting elements and a second display region with pixel circuits, where the signal lines are routed to minimize overlap with the light emitting elements and data lines, and using transparent connecting wires to reduce diffraction and improve transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If light emitting elements and data lines are present in the display region, then the display device can provide display functions, but light blocking and diffraction occur, reducing transmittance and image quality
Solution Approach 1:
The display region is divided into a first display region for light emitting elements and a second display region for pixel circuits. This segmentation allows light to pass through the first display region with minimal obstruction while pixel circuits are concentrated in the second display region, thereby improving overall transmittance and reducing light blocking effects.
Solution Approach 2:
The patent transitions from a traditional mixed arrangement to a spatially separated arrangement by creating distinct first and second display regions. This dimensional reorganization places pixel circuits in a separate region from light emitting elements, reducing light interference and improving image quality for in-screen cameras.
2Reliability
If signal lines are routed through the display region, then electrical connection is achieved, but light diffraction and ghosting effects occur
Solution Approach 1:
Pixel circuits are extracted from the first display region and placed in the second display region. This extraction removes the primary source of light diffraction and ghosting effects from the light path, while electrical connections are maintained through carefully routed signal lines that minimize light interference.
Solution Approach 2:
The patent introduces an intermediate structure where signal lines connect the first and second display regions. These signal lines are designed to minimize light diffraction while maintaining electrical connection, acting as intermediaries that balance electrical functionality with optical performance.
3Productivity
If pixel circuits are distributed throughout the display region, then driving capability is sufficient, but light blocking increases and transmittance decreases
Solution Approach 1:
The display region is segmented into functional zones: the first display region dedicated to light emitting elements with high transmittance requirements, and the second display region dedicated to pixel circuits with driving functions. This segmentation ensures sufficient driving capability is concentrated where needed while maximizing light transmission in the first display region.
Data Source
AI summary
A display substrate and a display device are provided. The display substrate includes a display region, at least one first signal line, and at least one connecting wire. The display region includes a first display region and a second display region; the first display region includes at least one first light emitting element, and the second display region includes at least one first pixel circuit; the first signal line includes a first main body portion and a first winding portion; the first main body portion extends along a first direction, and at least part of the first winding portion extends along a direction intersecting with the first direction; at least one first signal line is electrically connected to at least one first pixel circuit; and at least one first pixel circuit is configured to respectively drive at least one first light emitting element.