Backlight Drive Method for Dynamic Brightness Adjustment
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Solution Overview
Problem
Existing liquid crystal display (LCD) backlight modules have a fixed and non-adjustable brightness range, limiting the flexibility of light emission and not adapting to ambient brightness, which affects display performance and user experience.
Innovation Solution
A method and device for dynamically adjusting the backlight brightness range by acquiring actual ambient brightness and matching it to a range of gray levels within the intrinsic brightness range of the light-emitting region, using a system with a first acquiring unit, a determining unit, and a processing unit to optimize the backlight brightness based on ambient conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the backlight brightness range is fixed, then the structure is simple and stable, but the adjustment flexibility is reduced and it cannot adapt to ambient brightness
Solution Approach 1:
The patent applies dynamics by transforming the fixed backlight brightness range into a dynamically adjustable one. The drive circuit determines a target backlight brightness range based on actual ambient brightness and matches it to gray levels in real-time, allowing the system to adapt to different environmental conditions while maintaining a relatively simple overall structure.
Solution Approach 2:
The patent changes the brightness parameter dynamically by acquiring actual ambient brightness and determining a target backlight brightness range that adapts to environmental conditions. This parameter change approach enables the backlight to adjust its output range according to ambient light levels without requiring a complete redesign of the hardware architecture.
2Reliability
If the backlight brightness range is fixed, then the device complexity is low, but the display performance under varying ambient conditions deteriorates
Solution Approach 1:
The patent implements feedback by acquiring actual ambient brightness and using this information to determine the target backlight brightness range. This closed-loop control ensures that the display quality remains consistent under varying ambient conditions, as the backlight automatically adjusts its output based on real-time environmental measurements.
Solution Approach 2:
The backlight drive circuit performs self-adjustment by autonomously determining the target brightness range based on ambient conditions and matching it to appropriate gray levels. This self-service capability maintains reliable display quality without requiring external intervention or complex manual calibration systems.
Data Source
AI summary
A backlight drive method, a backlight drive device, a backlight source system, and a display device are provided in the present disclosure. The backlight drive method is used to drive a light-emitting region of a backlight source of the display device. Driving the light-emitting region of the backlight source includes acquiring actual ambient brightness of an ambient where the display device is located. Driving the light-emitting region of the backlight source further includes determining a target backlight brightness range of light exited from the light-emitting region with reference to the actual ambient brightness, where the target backlight brightness range is within an intrinsic brightness range of the light-emitting region. Driving the light-emitting region of the backlight source further includes matching the target backlight brightness range to a plurality of gray levels preset in the light-emitting region.