Power Reduction in Micro-LED Displays

LED display module and screen that use high voltage to reduce energy consumption compared to standard low voltage displays. The modules have LEDs laid equally on the PCB board, driven by high voltage chips. This allows using higher voltages than the typical 5V for LED displays. The higher voltage reduces the current through the LEDs and PCB wiring, reducing power loss and heat generation compared to low voltage displays.

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An energy-saving circuit for LED displays that reduces power consumption and heat generation of the constant current driver chips. The circuit is used in RGB LED displays with common anode connection. The circuit includes a power module, two constant current drive modules, and a buck converter. The red, green, and blue LED anodes connect to the power module. The red LED cathode connects to the first constant current drive module. The first buck converter connects to the first constant current drive module output and ground. The green and blue LED cathodes connect to the second constant current drive module inputs. This configuration raises the voltage level at the first constant current drive module using the buck converter, reducing its voltage drop and power consumption.

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Energy-saving control method for LED displays that reduces power consumption by optimizing when the display driver enters low power mode. Instead of waiting for a full frame of zeros, it judges if a channel can go into low power mode based on the state parameters in the next scan line. This allows more frequent use of low power mode, reducing switch crosstalk and EMI while lowering power. The method involves acquiring the channel's parameters during line feed, then deciding if the driver should go into low power mode for the next scan line.

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Control system and method for LED driver to optimize efficiency and reduce heat generation by maintaining constant current while minimizing voltage applied to the LEDs. The system has two control units, one to provide driving current to the LEDs and the other to adjust the bias voltage based on the current. This allows using lowest voltage to optimize efficiency while maintaining constant current.

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Optimizing power supply for microLED displays to improve efficiency and color uniformity. The microLED display has sub-arrays of independently powered microLED pixels. Adjustable power supplies are connected to each sub-array. A controller measures the forward voltage of the microLEDs in a sub-array and dynamically adjusts the power supplied to that sub-array based on the measured voltages. This allows tailored power levels for each sub-array to match the specific voltage requirements of the microLEDs in that sub-array, improving efficiency compared to a single supply for the whole array.

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LED display unit with distributed power architecture to minimize thickness and power consumption of LED displays used in applications like electronic signs. The display has integrated module units containing both the driving driver and power supply on the same substrate. Multiple integrated modules are combined in a matrix. Each module operates as a distributed power unit. The integrated design reduces thickness compared to separate driver/power units. Cooperative operation between modules further improves power efficiency.

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Balancing voltage drops and power consumption in multi-channel LED systems to improve efficiency and avoid overheating. The method involves adjusting the pulse width and amplitude of the LED current to maintain a constant product of current amplitude and duty cycle. This balances voltage drops across channels while keeping brightness the same. The circuit achieves this by using a single power device per channel to simultaneously adjust current amplitude and width. It also sets a phase offset between channels to reduce voltage ripple and fixes turn-off times to avoid voltage overshoot.

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Reducing power consumption of LED displays by dynamically adjusting the driving voltage based on screen temperature. A temperature sensor collects the average pixel circuit temperature. This value is used to control the power supply to dynamically adjust the driving voltage for each pixel's LED. By optimizing voltage per pixel at varying temperatures, power consumption can be lowered without affecting display brightness.

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A dynamic power supply system for microLED displays that improves efficiency and reduces heat by adjusting the power supply voltage based on operating conditions like temperature and current. The system uses a control block to dynamically set the power supply voltage for an LED array based on data describing forward voltages and operating conditions. This avoids overvoltage and waste when fixed supply voltages are used.

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Reducing energy consumption of LED displays by dynamically adjusting the power supply voltage based on the forward voltage (VF) of the individual LEDs. The display's control system generates a voltage control signal for the power supply using the VF values of the LEDs. This allows targeted voltage provision to avoid overvoltage wastage and excessive heat in LEDs. It also prevents long-term high temperature damage to the LED junctions. By providing the exact voltage required by each LED, energy consumption is reduced compared to fixed high voltage power supplies.

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LED display energy consumption self-adaptive energy-saving control method and device to optimize LED display energy efficiency by dynamically adjusting brightness, timing, and color based on usage requirements. The method involves monitoring display energy consumption, temperature, and usage time using external devices. Based on this data, the brightness is automatically adjusted to conserve energy. The display timing is also adjusted to match brightness levels. The color can also be adjusted. Heat dissipation mechanisms are used to cool the displays. The goal is to avoid overconsumption and wastage by adapting to actual needs rather than fixed settings.

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A display panel that uses micro-LEDs and integrated driver circuitry to reduce power consumption compared to conventional display technologies like LCD and OLED. The display panel has an array of micro-LED pixels, each containing a micro-LED and an integrated driver circuit. This allows each pixel to control its own LED brightness and color directly without additional driver circuitry. The integrated driver circuitry reduces power consumption by eliminating the need for separate driver components for each pixel. The micro-LED pixels can be densely packed to achieve high-resolution displays with improved brightness and energy efficiency.

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Optimizing power efficiency and heat dissipation in high-density LED displays by dynamically adjusting the drive currents based on channel luminance levels. The display has multiple LED channels and a control circuit that maps individual luminance levels to average channel currents. It then selects a group current level that exceeds all channel currents. The circuit configures the channel duty cycles based on ratios of average to group current. This allows efficient driving at lower group currents while maintaining brightness. The shared supply voltage is set based on channel voltages. The group current and voltage are dynamically adjusted frame-by-frame.

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Reducing power consumption in LED displays by using a power conversion circuit to extract the minimum critical power required to drive the LEDs to a specific brightness. A driver chip with a power conversion circuit, brightness detection, and logic control. The conversion circuit converts the power supply voltage to the critical power needed by the LEDs. The brightness detection circuit checks LED brightness and the logic control adjusts conversion output to match. This prevents excess power consumption when driving LEDs from a full supply versus optimized critical level.

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LED display system with reduced losses and improved efficiency. It uses a specialized driving circuit with an inverter, energy storage, and charging to achieve zero switching and conduction losses. The inverter controls when the driving circuit is on versus charging circuit. When the driving circuit is off, the charging circuit charges. When on, the driving circuit draws power from the energy storage instead of the main supply. This avoids switching losses when turning on and conduction losses when on. The energy storage returns power when turning off.

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Micro-LED display panel, display module, and LED display with improved heat dissipation and performance by using graphene thermoelectric conversion layers below the circuitry. This prevents heat buildup and damage to the micro-LED chips and circuitry. The graphene layer converts some of the heat back into electricity, aiding in dissipation. It also reduces the need for thick PCB layers, which accumulate heat, by allowing the circuitry to be stacked vertically. This improves cooling, reduces size, and simplifies manufacturing compared to side-by-side PCB layers.

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Energy-saving Micro LED display screen that reduces power consumption by allowing individual LED modules to be turned off when not in use instead of the entire display. The display has a main control module, power supply module, and multiple LED modules. Each LED module has an interface to connect to the control and power modules. The control module converts video data and sends it to the LED modules. The power module supplies power to the display. When a module is not needed, the control module can disable power to that module instead of the whole display.

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A power control system for LED modules that compensates for temperature effects to maintain constant light output as the module heats up. The system measures the module temperature and SMPS power consumption. It then adjusts the power supplied to the module based on the temperature and power data to compensate for temperature-related efficiency loss. This prevents light output degradation due to self-heating and ambient temperature increases. The power compensation keeps the module's light output consistent as it warms up.

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Micro-LED display technology with reduced power consumption. The display uses a segmented micro-LED chip, separating each segment and electrically connecting in series. When driven, this increases the voltage across the chip, reducing power consumption versus a single-segment chip. It solves micro-LED displays' high power consumption and low drive efficiency problems.

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Energy-saving structure for LED displays that reduces power consumption by optimizing the connection of the LED lamp beads to the power supply. The structure involves connecting the lamp beads in series first and then connecting them to the power supply ground terminal. This allows sharing of the supply voltage between the beads rather than having separate power channels for each color. The ground terminal is connected to the negative pole of the power supply. The lamp bead colors are connected as follows: red to ground and 2.8V, green to ground and 3.8V, and blue to ground and 3.8V. This enables sharing of the supply voltage between the beads rather than having separate power channels for each color.

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