Screen Door Effect Elimination in Micro-LED Displays

Micro LED display panel with improved resolution, reduced screen door effect, and lower cost compared to conventional micro LED displays. The panel has an array of sub-pixel areas on the substrate, each filled with uniformly distributed micro LEDs. This allows higher resolution by packing more LEDs in each sub-pixel without increasing inter-pixel gaps. By optimizing the number of LEDs per sub-pixel, it balances resolution, screen door effect, and cost compared to using a single large LED per sub-pixel. The micro LEDs are transferred using a process like micro transfer printing.

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Intelligently adjusting photoelectric parameters of Micro LED transparent screens to improve display quality and efficiency. The method involves using a central processor to communicate with the individual RGB light source modules on the screen. By intelligently adjusting parameters like brightness, color, and power consumption of each module, it balances uniformity, contrast, and efficiency across the screen. This mitigates issues like brightness non-uniformity, outdoor visibility, cost, and power dissipation in Micro LED transparent displays.

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Segmented LED arrays with diffusing elements to improve uniformity and reduce patterns when using secondary optics. The arrays have LED segments separated by walls. Diffuser material is placed directly over the LEDs or wavelength converter to scatter light before it reaches secondary optics like lenses. This avoids patterns when using focus techniques. The diffuser can be columns, domes, or a continuous layer over multiple LEDs.

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LED display screen with improved pixel filling, contrast, and reduced graininess. The display uses LED chips arranged in pixels with a light guide layer on the chip's light-emitting surface. The light guide uniformly spreads the chip's light to enlarge the pixel size without increasing the chip count. It also reduces light crosstalk between pixels by having a larger light entry area than exit area. This improves pixel filling, reduces graininess, and enhances picture quality compared to regular pixel layouts.

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LED display adjustment circuit to improve uniformity of microLED displays by individually adjusting brightness of each LED chip. The circuit has three modules: a drive module connecting to the LED chips, a photoelectric conversion module also connecting to the LED chips, and a data processing module. The photoelectric conversion module converts the LED light into electrical signals. The data processing module analyzes the electrical signals from the photoelectric conversion module to determine brightness adjustments for each LED chip. It then sends adjusted drive signals to the drive module to adjust the brightness of each LED chip individually, compensating for variations in luminance.

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Display device with improved resolution using regionalized light control instead of physically reducing display unit size. The display has a micro LED panel with a light control component on the emitting side. Each light control area corresponds to a micro LED. Instead of shrinking the LEDs, the control areas are divided into multiple photon control areas. In each frame, the photon areas sequentially transmit the LED light. This indirectly reduces apparent LED size due to persistence of vision. The display breaks the physical limitation of reducing LED size and increases resolution by regionally controlling emitted light.

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