Under-Display Camera Image Compensation Using Deep Learning
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Solution Overview
Problem
Existing display devices face challenges in improving the quality of images captured by camera modules located under display areas due to light transmittance differences and resulting light blur phenomena.
Innovation Solution
A display device with a display panel featuring distinct light transmittance areas and a compensation module using a learning data-based deep learning algorithm to enhance image quality by compensating raw image signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the camera module is located under the display area to enable integration and compact design, then device integration and compactness are improved, but light blur occurs in captured images due to light transmittance differences
Solution Approach 1:
A compensation module is introduced as an intermediary between the camera module and the external environment. This module includes a light shield that selectively blocks light paths and a compensation lens that corrects optical aberrations caused by the display panel's light transmittance, thereby eliminating light blur while maintaining the integrated design
Solution Approach 2:
The light shield is designed with different transmittance characteristics in different regions - it has a first light shield portion with specific light blocking properties and a second light shield portion with different properties. This local differentiation allows precise control of light paths reaching the camera sensor, compensating for the display panel's variable light transmittance across different areas
2Adaptability or versatility
If the display panel has different light transmittance areas to accommodate camera module placement, then camera integration is improved, but light blur phenomena occur in captured images
Solution Approach 1:
The compensation module acts as a mediator between the display panel's variable light transmittance areas and the camera module. The light shield and compensation lens work together to normalize the light distribution, ensuring consistent image quality regardless of the display panel's heterogeneous light transmittance characteristics
Solution Approach 2:
The optical characteristics of the light shield and compensation lens are specifically designed to counteract the light transmittance variations of the display panel. By adjusting parameters such as light shield thickness, material properties, and lens focal length, the system compensates for the different light transmittance areas, maintaining reliable image quality
Data Source
AI summary
A display device includes: a display panel including a first display area having a first light transmittance and a second display area having a second light transmittance that is higher than the first light transmittance; a camera module under the second display area that is configured to output a raw image signal; a compensation module configured to: activate in response to a compensation control signal; receive the raw image signal; and compensate the raw image signal through a compensation program utilizing a learning data-based deep learning algorithm to generate a compensation image signal; and a control module configured to control operations of the display panel, the camera module, and the compensation module.