LED Display Driving Voltage Control via Temperature Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for reducing power consumption in LED displays are not applicable, as they require a stable driving current to maintain color stability, differing from OLED displays which can adjust current to lower brightness and power consumption.
Innovation Solution
A driving apparatus and method for LED displays that uses a temperature sensor to dynamically adjust the driving voltage of each pixel circuit based on temperature, employing a control unit and power supply to optimize power consumption while maintaining color stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the driving current value is reduced to decrease power consumption in LED display, then power consumption is reduced, but display brightness and color stability deteriorate
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the driving voltage based on temperature measurements. The temperature sensor detects temperature changes, and the control unit modifies the driving voltage parameter accordingly to maintain optimal LED operation. This resolves the contradiction by finding the optimal voltage parameter that maintains brightness while reducing power consumption through temperature-based adaptive control.
Solution Approach 2:
The patent implements feedback control by using a temperature sensor to continuously monitor the temperature of the LED display and feeding this information back to the control unit. The control unit then adjusts the driving voltage based on the temperature feedback, creating a closed-loop control system that maintains display quality while optimizing power consumption through adaptive voltage regulation.
2Use of energy by moving object
If the driving voltage is reduced to decrease power consumption, then power consumption is reduced, but color stability deteriorates
Solution Approach 1:
The patent changes the driving voltage parameter dynamically based on temperature conditions. By adjusting voltage according to temperature, the system maintains the electrical characteristics needed for color stability while operating at lower power consumption levels during normal temperature conditions.
Solution Approach 2:
The temperature-based feedback mechanism ensures that voltage adjustments are made only when temperature conditions warrant them, maintaining color stability through adaptive control rather than fixed low-voltage operation that would compromise color accuracy.
3Stability of the object's composition
If the driving current is kept stable to maintain color stability, then color stability is maintained, but power consumption increases
Solution Approach 1:
The patent transitions from static fixed current control to dynamic voltage control based on temperature conditions. The system adapts the driving parameters dynamically, using voltage adjustment rather than fixed current, allowing power consumption to be reduced while maintaining color stability through temperature-compensated voltage regulation.
Solution Approach 2:
The patent changes the control parameter from fixed current to temperature-dependent voltage. This parameter change allows the system to maintain color stability through voltage compensation while operating at lower power consumption levels, as voltage control provides more flexibility than fixed current control.
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 effectively reduces power consumption in LED displays by adjusting driving voltage based on temperature, leading to decreased energy usage without compromising display quality.
Implementation Method 1
a temperature sensor is further included, the temperature sensor is configured to collect a first temperature value of the LED display
Implementation Method 2
a driving apparatus for an LED display... provide a driving voltage for a light-emitting diode in each pixel circuit
Implementation Method 3
the power supply unit is configured to provide a driving voltage for a light-emitting diode in each pixel circuit in the LED display
Data Source
AI summary
A driving method and driving apparatus for a light-emitting diode LED display, and an LED display are provided, to decrease power consumption of the LED display. The driving apparatus includes temperature sensors (201, . . . , 20m), a control unit (301), and a power supply unit (401). The power supply unit (401) is configured to provide driving voltages (VDD, VSS) for light-emitting diodes (1011, 1021) in all pixel circuits (101, . . . , 10n) in the LED display. The temperature sensors (201, . . . , 20m) are configured to collect a first temperature value of the LED display. The control unit (301) is coupled to the power supply unit (401), and is configured to control, based on the first temperature value, the power supply unit (401) to dynamically adjust the driving voltages (VDD, VSS) that are applied to the light-emitting diodes (1011, 1021) in all pixel circuits (101, . . . , 10n).