Power Optimization in Micro-LED Displays

Display device and control method to reduce stress on LEDs and extend their lifespan by dynamically adjusting the voltage applied to the LEDs based on the input signal. The method involves analyzing the input image data to determine if the first LEDs require a higher voltage than a reference value. If so, that becomes the drive voltage for those LEDs. Otherwise, a default voltage is used. This prevents overdriving the LEDs when the image doesn't require it, reducing stress and improving lifetime.

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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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A driving circuit for LED displays that improves consistency of low grayscale display by amplifying low duty cycle PWM data and reducing the current in proportion. This increases the on-time of the LEDs when the current is reduced, which compensates for slower response times of analog circuits. By making the increased on-time greater than or equal to the dynamic response time of the analog circuits, the LEDs can still display at low grayscale levels without issues. This improves consistency of ignition and reduces "glow" effects compared to directly reducing the current.

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Energy management unit, driver chip and low-power display driver circuit for intelligent and automated power optimization in LED displays. The energy management unit allows selectable low power consumption modes for both display modules and driver chips. In manual mode, the user configures row/column control. In automatic mode, the management unit intelligently optimizes power based on image data. It closes image processing, writes, and read operations for blank areas, turns off circuits for empty frames, and disables charging switches. This reduces power in the display and driver chip itself.

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Display device and control method to reduce LED stress and increase lifespan by adjusting the voltage applied to the LED based on the input image data. It analyzes the required voltage to make the LED emit light from the image data and compares it to a reference value. If the required voltage is below the reference, it sets a higher voltage level. This prevents applying low voltages that can stress the LED. The driving ICs are then controlled based on the determined voltages to apply the adjusted levels to the LEDs. This avoids applying excessively low voltages when displaying black or low grayscale images.

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Display apparatus with a self-emissive display panel containing micro LED pixels, and a method to adjust the brightness to prevent color distortion due to heating. The method involves calculating heating estimation for an input image based on the pixel colors, then modifying the average brightness using the heating estimation. This compensated brightness is used to drive the display panel. The compensation accounts for how much heat each color pixel generates, preventing color shift as the display gets warmer.

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LED display device with power saving and redundancy for preventing interruption and reducing power consumption. The device has a dual form hub board with primary and secondary video receivers. It detects video signal status and switches receivers when none are received. In standby, it displays a last frame. A processor cuts power to LED modules when no video. This allows uninterrupted display when signals fail and reduces power when not displaying.

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Adaptive power management for LED display systems that dynamically adjusts the power supply voltage based on feedback from the LED driver chips. The LED driver chips detect the voltage at their output ports and send reference currents to the power management system. The power management system adjusts the LED array voltage accordingly to minimize power consumption in each driver chip. This allows optimizing power supply voltages when multiple power management systems are used for high density LED arrays.

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Power supply system for micro LED arrays that improves efficiency and color accuracy compared to conventional power supplies. The system uses multiple power sources connected to sub-arrays of micro LEDs instead of a single power source for the whole array. A controller dynamically adjusts the power supplied to each sub-array based on measured power needs. This allows optimizing voltage offset matching for each sub-array of LEDs with different forward voltages.

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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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Display device with reduced power consumption and flickering by optimizing current control for LED displays. The display has two operation modes. In the first mode, brightness is adjusted by controlling the current. In the second mode, brightness is adjusted by controlling the on time using pulse width modulation (PWM). This allows low current operation without offset in the first mode, and flicker reduction in the second mode.

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Energy saving method for LED displays that turns off the screen when not in use to reduce power consumption. The method involves controlling the LED display driver chip to enter a low power mode when there is no input data for extended periods. This involves determining the optimal mode based on the display content and refreshrate, and implementing adaptive grouping and dispersion techniques to optimize low gray display. By selectively turning off sections of the display instead of fully powering it down, the method balances power savings with maintaining good image quality during extended periods of inactivity.

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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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Display device with power supply that reduces energy waste and simplifies structure compared to supplying same voltage to all LED strings. The display has a power circuit that sequentially powers subsets of LED strings at different voltages within a cycle. This allows custom voltage per subset instead of overvoltaging all strings. The circuit has a controller that switches power connections to subsets and adjusts supply voltage based on subset current.

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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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Display device and driving method to mitigate color shift and brightness variation in LED displays. The method involves calculating the peak brightness level for each display module based on its power consumption. This calculated brightness level is used to determine the optimal current for driving the module. The current information is then stored and used to control the driving modules. This allows adjusting the current to prevent color shift and brightness variation as the overall display brightness is increased.

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Display device with adjustable backlight voltage to improve energy efficiency of Mini-LED displays. The display has a controller that monitors the voltage of each backlight partition while driving the LEDs. It then adjusts the overall backlight supply voltage in real-time to ensure all LEDs are adequately powered without excess voltage waste. This closed-loop control prevents over-voltage in some LEDs while compensating for line losses and variations.

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LED display driver circuit that prevents brightness non-uniformity at low brightness levels by adjusting channel currents based on estimated brightness. The circuit has a control unit that receives brightness estimates for each channel. It then adjusts the control signals to the current control circuits based on the estimates. This compensates for channel-to-channel current variance at low brightness where the on-time is short. It can use measured current integrals from testing or receive estimates from external sources.

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Reducing power consumption of LED displays by optimizing row driver operation to maintain refresh rate without excessive charging/discharging of parasitic capacitance on the row lines. The method involves adjusting the number of times a row is turned on to match target values based on display refresh rate and grayscale. This reduces the number of times the row parasitic capacitance charges/discharges, lowering power consumption compared to using the full preset number of row turns.

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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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