Hybrid LCD LED Display Screen for Adaptive Brightness
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Solution Overview
Problem
LCD display screens struggle in low ambient brightness environments, where they become unreadable, and LED screens consume excessive power, while also experiencing contrast issues in high brightness conditions, leading to inefficient energy use and inaccurate time display.
Innovation Solution
A hybrid display screen combining an LCD and LED display, where the LED display is arranged behind the LCD and both are driven by a control module to adapt to ambient brightness, with the LED pattern corresponding to the LCD pattern, allowing for simultaneous display and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If LCD display screen is used, then power consumption is low, but readability in low ambient brightness is poor
Solution Approach 1:
The patent combines LCD and LED display technologies into a hybrid display screen. The LCD layer provides low power consumption and good contrast, while the LED layer behind it provides backlight illumination for low brightness environments. This merging allows the display to maintain readability across different ambient light conditions without significantly increasing power consumption.
Solution Approach 2:
The hybrid display screen dynamically switches between LCD-only mode (for bright environments) and LCD+LED combined mode (for dark environments). The control module detects ambient brightness and activates the LED layer only when needed, making the display adaptive to changing light conditions while optimizing power consumption.
2Illumination intensity
If LED digital display screen is used, then readability in low ambient brightness is improved, but power consumption increases
Solution Approach 1:
Instead of using full LED backlight illumination continuously, the hybrid display uses LED only partially - specifically when ambient brightness falls below a threshold. The LED layer provides just enough illumination to maintain readability in dark environments, avoiding excessive power consumption that would occur with continuous LED operation.
3Illumination intensity
If LED digital display screen is used, then brightness is sufficient, but contrast in high ambient brightness deteriorates
Solution Approach 1:
The display dynamically selects the optimal technology based on ambient brightness. In high brightness environments, it uses LCD only mode which provides excellent contrast and readability. In low brightness environments, it activates the LED layer to provide sufficient illumination. This dynamic switching ensures optimal display quality across all lighting conditions.
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 hybrid display screen effectively addresses readability in varying light conditions and minimizes power usage by switching between LCD and LED modes based on brightness, ensuring clear and accurate time display while reducing energy consumption.
Implementation Method 1
a LED display screen arranged at a back side of the LCD display screen and overlapping with the LCD display screen... each LED pattern comprises a plurality of strokes and each stroke is corresponding to at least one LED lamp... driving the LED lamp to emit light
Data Source
AI summary
A LCD and LED hybrid display screen has a LCD display screen, a LED display screen overlapping with the LCD display screen, and a drive device for driving the LCD display screen and the LED display screen. The LED display screen has at least one LED pattern and each LED pattern comprises a plurality of strokes is corresponding to at least one LED lamp. The drive device drives the LCD display screen to display at least one LCD display pattern and driving the LED lamp to emit light. A LED display pattern formed by a light emitted by the LED lamp and the LCD display pattern are in one-to-one correspondence. A LCD and LED clock with a LCD and LED hybrid display screen is further provided. Different ambient brightness can be adapted while the power consumption can be reduced through overlapping the LCD display screen with the LED display screen.