Display Panel Signal-Line Shielding for Under-Screen Camera Imaging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display technologies with under-screen cameras face challenges in maintaining light transmittance and imaging quality due to diffraction and interference caused by gaps between signal lines, leading to glare and reduced visibility.
Innovation Solution
A display panel design incorporating a light shielding portion on the base substrate that covers the gaps between signal lines, reducing diffraction and interference, and ensuring adequate light transmittance for imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If signal lines are arranged closely to increase pixel density, then productivity is improved, but diffraction and interference occur causing glare and reduced imaging quality
Solution Approach 1:
A light shielding portion is introduced as an intermediary element between the signal lines and the imaging module. This light shielding portion blocks light from passing through the gaps between signal lines, thereby preventing diffraction and interference effects that would otherwise degrade imaging quality. The light shielding portion acts as a mediator that allows the signal lines to remain closely spaced for high pixel density while eliminating the harmful optical effects in the under-screen camera region.
2Object-affected harmful factors
If a light shielding portion is added to cover gaps between signal lines, then imaging quality is improved, but device complexity increases
Solution Approach 1:
The light shielding portion is merged with existing structures in the display panel, specifically integrating it with the base substrate or existing support layers. This merging approach allows the light shielding function to be added without creating a completely separate component, thereby reducing the increase in device complexity. The light shielding portion is designed to work in conjunction with existing layers rather than adding independent structural complexity.
3Object-affected harmful factors
If the light shielding portion covers all gaps between signal lines, then diffraction is minimized, but light transmittance for imaging is reduced
Solution Approach 1:
The light shielding portion is applied selectively only in the under-screen camera region where the imaging module is located, rather than across the entire display panel. This local application ensures that diffraction effects are minimized specifically in the region affecting imaging quality, while other regions of the display panel maintain their normal light transmittance characteristics for display purposes. The light shielding portion's orthographic projection corresponds precisely to the under-screen camera region.
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
The solution effectively eliminates glare and enhances imaging quality by minimizing brightness changes and improving visibility in the field of view.
Implementation Method 1
an orthographic projection of the light shielding portion on the base substrate covers at least orthographic projections of the plurality of gaps on the base substrate
Implementation Method 2
at least one of interference and diffraction is generated due to a plurality of gaps in response to that at least a part of light passes through the plurality of gaps
Implementation Method 3
at least one of interference and diffraction is generated due to a plurality of gaps in response to that at least a part of light passes through the plurality of gaps
Data Source
AI summary
A display panel is provided, including a base substrate, pixel units, signal lines, and a light shielding portion. Each pixel unit includes a light-emitting element and a pixel driving circuit. The pixel units include first pixel units in a first display region of the display panel and second pixel units in a second display region of the display panel. The signal lines are electrically connected to pixel driving circuits of the second pixel units respectively. Orthographic projections of at least two of the signal lines on the base substrate are spaced apart from each other by a gap, and an orthographic projection of the light shielding portion on the base substrate covers an orthographic projection of the gap on the base substrate and orthographic projections of the second pixel units. The light shielding portion includes first light shielding sub-portions arranged in an array along row and column directions.