Liquid Crystal Panel Incident Light Control Area for Camera Integration
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Solution Overview
Problem
Electronic devices with integrated liquid crystal panels and cameras face challenges in capturing clear images due to the overlap of the camera with the incident light control area, which affects light transmission and control, leading to suboptimal image quality.
Innovation Solution
The electronic device incorporates a liquid crystal panel with a display area and an incident light control area, featuring distinct control electrodes and a common electrode, where the voltage applied to the control electrodes differs in polarity from the common voltage, allowing for precise control of light transmission and incident light on the camera.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the camera overlaps the incident light control area of the liquid crystal panel, then the device structure is more compact and integrated, but the image quality deteriorates due to insufficient light control and transmission
Solution Approach 1:
The liquid crystal panel is divided into a display area and an incident light control area, with the incident light control area further segmented into multiple regions (first incident light control area, second incident light control area, third incident light control area) with different light transmissivity characteristics. This segmentation allows independent optimization of light control for different functional zones, enabling the camera to capture clear images while maintaining device integration.
Solution Approach 2:
Different regions of the incident light control area are assigned different light transmissivity properties to meet specific functional requirements. The first incident light control area has higher light transmissivity for general light passage, while the second and third areas have lower transmissivity for precise light control near the camera, achieving local optimization of light management.
2Ease of manufacture
If a conventional liquid crystal panel structure is used, then the manufacturing process is simple, but light transmission control is insufficient leading to poor image quality
Solution Approach 1:
The liquid crystal panel employs dynamic voltage control with multiple voltage levels (first voltage, second voltage, third voltage) applied to different control electrodes in the incident light control area. This dynamic control enables real-time adjustment of light transmissivity in different regions, achieving precise light transmission control while maintaining compatibility with conventional liquid crystal manufacturing processes.
3Adaptability or versatility
If the camera is positioned to overlap with the display area, then the device achieves better integration, but light control for image capture is compromised
Solution Approach 1:
The incident light control area acts as an intermediary zone between the display area and the camera, mediating light transmission. This intermediate region with controlled light transmissivity properties enables the camera to receive sufficient light for clear image capture while maintaining the integrated device structure, resolving the conflict between integration and image quality.
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
This configuration enables effective light control, improving image quality by allowing for adjustable light transmissivity and depth of focus, enhancing the camera's ability to capture clear images, especially in close-range scenarios like fingerprint authentication.
Implementation Method 1
a liquid crystal layer LC; A voltage generated by the first control electrode RL1 and the second control electrode RL2 is applied to the first control liquid crystal layer LC1
Data Source
AI summary
According to one embodiment, an electronic device includes a liquid crystal panel and a camera. The liquid crystal panel includes a display area and an incident light control area. The camera overlaps the incident light control area. The display area includes a pixel electrode. The incident light control area includes a first control electrode which is different in shape from the pixel electrode, a second control electrode, and a common electrode. A voltage applied to the first control electrode and a voltage applied to the second control electrode are different in polarity from a common voltage applied to the common electrode.