Under-Screen Camera Light Control via Display Electrode Voltage
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Solution Overview
Problem
Traditional electronic devices with under-screen cameras face poor shooting effects due to fixed light-entry amounts, limiting adjustable light ranges and resulting in suboptimal photography experiences.
Innovation Solution
The method involves adjusting the electrode voltage of a display screen with polarizers and liquid crystals to control light transmittance, effectively simulating adjustable aperture settings for the camera, allowing for optimal light entry and improved image capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a fixed aperture is adopted in the under-screen camera due to thickness limitation, then the device structure is simplified and manufacturing is easier, but the shooting effect deteriorates due to fixed light-entry amount
Solution Approach 1:
The display screen is designed to perform dual functions: displaying visual information and controlling light transmission for the under-screen camera. By integrating the light transmission control function into the existing display screen structure, the patent avoids adding separate aperture control mechanisms, thereby maintaining ease of manufacture while enabling adjustable light entry for improved shooting effects.
Solution Approach 2:
The patent controls the light transmission parameter of the display screen by adjusting electrode voltage. This allows dynamic adjustment of the light entry amount for the under-screen camera without changing the physical aperture structure, resolving the contradiction between fixed structure simplicity and variable light control needs for quality imaging.
2Reliability
If the aperture of the camera is adjusted to control light entry, then the shooting effect is improved, but the device complexity increases due to additional adjustment mechanisms
Solution Approach 1:
The display screen serves multiple purposes: it acts as both the visual display interface and the light control mechanism for the camera. This eliminates the need for separate aperture adjustment mechanisms, maintaining device simplicity while achieving variable light control for improved shooting effects across different lighting conditions.
Solution Approach 2:
The patent replaces traditional mechanical aperture adjustment mechanisms with an electro-optic control method. By using electrode voltage to control the light transmission properties of the display screen's liquid crystal layer, the system achieves aperture-like control without mechanical moving parts, thereby reducing device complexity while improving shooting effectiveness.
3Adaptability or versatility
If the light transmittance of the display screen is adjusted to control camera light entry, then the adjustable light range is expanded, but the display screen control complexity increases
Solution Approach 1:
The patent adjusts the light transmittance parameter of the display screen by controlling electrode voltage levels. This electrical control method enables continuous adjustment of the light range without mechanical complexity, allowing the system to adapt to various lighting conditions while maintaining simple electronic control architecture.
Solution Approach 2:
Traditional mechanical aperture systems are replaced with electro-optic control through the display screen. This substitution enables expanded light range adjustment through voltage control of the liquid crystal layer, achieving greater adaptability without the complexity of mechanical adjustment mechanisms.
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 approach enables the electronic device to achieve desired light transmittance conditions, enhancing shooting results by mimicking adjustable aperture functions, thus overcoming the limitations of fixed apertures in under-screen camera systems.
Implementation Method 1
the display screen includes a first polarizer and a second polarizer, and a liquid crystal is arranged between the first polarizer and the second polarizer
Implementation Method 2
adjusting an electrode voltage of the display screen as a target voltage value, where in a case that the electrode voltage of the display screen is the target voltage value, a light transmittance of the display screen meets a preset condition
Data Source
AI summary
A shooting method applied to the electronic device including a display screen and a camera. The display screen includes a first polarizer and a second polarizer, and a liquid crystal is arranged between the first polarizer and the second polarizer. The method includes: adjusting an electrode voltage of the display screen as a target voltage value, where in a case that the electrode voltage of the display screen is the target voltage value, and a light transmittance of the display screen meets a preset condition; and acquiring a first image through the camera.