Gray Scale Voltage Regulator for AMOLED Display Brightness Control
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Solution Overview
Problem
In display technologies, particularly in AMOLEDs, the fixed input voltage of the voltage dividing circuit limits the number of gray scale steps at low brightness, resulting in poor display effects due to insufficient step voltage.
Innovation Solution
A regulating device and method that adjust the input voltages to the voltage dividing circuit using voltage regulators and controllers, allowing for a predetermined number of gray scale steps across all display brightness levels by varying the first and second input voltages based on required display brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed input voltage is used in the voltage dividing circuit, then the circuit structure is simple, but the number of gray scale steps is insufficient at low brightness levels
Solution Approach 1:
The patent implements dynamic adjustment of the first input voltage based on display brightness requirements. The voltage regulator dynamically changes the first input voltage value according to different brightness levels, enabling the voltage dividing circuit to generate sufficient gray scale steps across all brightness conditions while maintaining circuit structural simplicity.
2Manufacturing precision
If the first input voltage is increased to improve gray scale steps at low brightness, then the step voltage precision improves, but the voltage regulation complexity increases
Solution Approach 1:
The patent changes the voltage parameter (first input voltage) dynamically based on display brightness requirements. By adjusting this parameter according to different brightness levels, the system achieves sufficient gray scale step precision without requiring complex structural modifications, as the regulation is accomplished through parameter variation rather than additional components.
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
Improves the precision of step voltage and enhances the transition effect of low gray scale images by generating a sufficient number of gray scale steps for all display brightness levels, particularly at low brightness conditions.
Implementation Method 1
a first voltage regulator configured to regulate a first fixed voltage to output the first input voltage
Implementation Method 2
a voltage dividing circuit configured to generate a gray scale voltage according to a first input voltage and a second input voltage
Data Source
AI summary
The invention provides a regulating device and a regulating method for a gray scale voltage, and a display device. The regulating device includes a voltage dividing circuit configured to generate a gray scale voltage according to a first input voltage and a second input voltage; a first voltage regulator configured to regulate a first fixed voltage to output the first input voltage, such that the voltage dividing circuit can generate a predetermined number of gray scale steps for all display brightness.