Inter-pixel Interference Control in Micro-LED Displays

Display device using micro LEDs that prevents color interference between subpixels, improves contrast, and enables uniform color conversion over large areas. The display has a substrate, partition walls defining subpixel areas, micro LEDs in each subpixel, a color conversion layer, and a color filter layer. The color conversion material continuously connects multiple subpixels of the same color. This prevents color mixing. The partition walls have a spacer between them and the substrate. The spacer prevents light leakage. By connecting the color conversion material across subpixels, it reduces reflection compared to having a separate conversion layer for each subpixel. This improves contrast. The spacer prevents unevenness of the conversion layer.

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Micro-LED display device with improved efficiency and reduced interference between subpixels. The device has a micro-LED array on a substrate. Each micro-LED has a reflective layer protruding from the back side that surrounds the LED. The reflective layer forms trenches between adjacent LEDs. This prevents light leakage between subpixels.

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Micro-LED display panel with improved color conversion efficiency and reduced crosstalk between pixels. The panel uses groups of at least three micro-LEDs per pixel, with the LED orientations staggered to increase spacing between them. The spacing between adjacent LEDs is filled with a shielding layer that has apertures aligned with each LED. This reduces crosstalk. The larger LED has a larger aperture for its shielding.

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Display module with reduced crosstalk between pixels using light absorption layers to prevent light leakage from self-emitting pixels. The display module has a conductive light absorption layer between the substrate and pixels. Each pixel has multiple same-color self-emitting elements, larger color conversion layers, and filters. The absorption layer absorbs light from the sidewalls and rear of the pixels, preventing it from leaking into adjacent pixels.

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The manufacturing method for micro-LED displays that have isolated subpixels to prevent color crosstalk and maintain color purity in micro-LED displays. The method involves using opaque walls or trenches between subpixels to block light emitted by one subpixel from stimulating nearby subpixels. This isolation prevents optical crosstalk and color mixing. An opaque material is deposited and patterned between micro-LEDs to form vertical walls or trenches that extend above the micro-LEDs. This opaque isolation layer blocks light transmission between subpixels. The isolation walls are formed by depositing multiple layers of different materials to create an opaque core and coating to the micro-LED emission wavelengths. This layering process provides isolation walls that are taller than the micro-LEDs and prevents crosstalk.

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The micro-LED display panel has partitioning walls to minimize crosstalk between the micro-LED cells, enabling high-resolution displays with individually addressable pixels. The panel has micro-LED cells arranged in a matrix shape and partitioning walls above them. The partitioning walls are made by cutting grooves in a light-transmitting member and filling them to form walls. The walls separate the micro-LED cells optically. The panel is made by bonding the micro-LED cells to a backplane, separating the growth substrate, and adding the partitioning walls.

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A monolithic micro-LED display with improved contrast and reduced light leakage between pixels. The display uses a flip-chip mounted structure with through-hole absorbing structures on top of each pixel. The absorbing structures are alternating dielectric and metal layers that absorb light emitted from the pixel. The through-hole allows electrical contact to be made with the pixel electrode. The absorbing layers prevent light from reflecting or transmitting to adjacent pixels, thus improving contrast.

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Double-color micro-LED display panel design with improved light output and resolution compared to conventional micro-LED displays. The design uses a barrier between pixels to prevent cross-talk and improve display efficiency. Each pixel has two light-emitting layers: one emitting red light and the other emitting blue light. The barrier blocks the red light from one pixel, reaching the blue light-emitting layer of another pixel and vice versa. This allows compact packing of pixels with different colors in a single pixel area. The barrier can be metal or insulating material.

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Laminated micro LED full-color display with improved pixel density and brightness. The display has stacked RGB pixel units with independent red, green, and blue micro LEDs arranged in a laminated structure on a wafer. Each micro LED has electrodes on opposite sides, allowing better electrode coverage and light extraction compared to side-by-side stacking. This improves display brightness and reduces crosstalk. The laminated structure also allows higher pixel density and better active area utilization compared to side-by-side stacking.

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The micro-LED display panel and device have increased color conversion efficiency compared to conventional micro-LED displays, thus enabling a wide color gamut and high-quality display. The panel has three micro-LEDs per pixel arranged in a triangle, with shielding between them. Each micro-LED emits a different primary color. A quantum dot conversion layer over each LED selectively converts the light to a desired color. The shielding prevents crosstalk.

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Micro-LED display device with improved stability and performance by reducing interference between micro-LEDs. The device has a barrier layer that fills the gaps between micro-LEDs to block light crosstalk. The barrier layer has two parts - an opaque lower section to block light and a transparent upper section. The lower section fills the gaps between micro-LEDs to prevent crosstalk. The upper section covers the lower section and micro-LEDs without gaps to improve stability. The lower section height is 0.7-1.2x the micro-LED height.

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Micro-LED display technology provides a solution to mutual interference between adjacent micro-LED pixels. The micro-LED array uses blocking walls to isolate individual micro-LED pixels and prevent light leakage between them. The walls surrounding the mesas contain micro-LEDs. This avoids cross-talk and interference when multiple pixels are lit simultaneously. It allows high-resolution micro-LED displays without the interference issues seen in closely packed arrays.

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Micro LED display with reduced color crosstalk and simplified manufacturing compared to conventional Micro LED displays. The display uses a time-sharing Fabry-Perot (FP) light control layer between the color conversion layer and substrate. This layer selectively transmits red, green, or blue light. A control circuit chooses which color to transmit through the FP layer. This eliminates the need for blue Micro LEDs in each subpixel, reducing crosstalk and simplifying manufacturing compared to conventional Micro LED displays where each subpixel has a blue Micro LED.

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LED display screen with improved color accuracy and luminous efficiency by using a light-shielding member with hollow areas matching the sub-pixels. The display has red, green, and blue sub-pixels, with red and green sub-pixels having an LED chip and a fluorescent layer stacked on the light path. The light-shielding member has corresponding hollow areas for each sub-pixel type, preventing light crosstalk and absorption between adjacent sub-pixels. This improves color purity and efficiency by avoiding fluorescent layer interference and light absorption between sub-pixels.

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Reducing crosstalk in microLED displays by roughening the surface between individual pixels. This involves forming a hemispherical or conical surface on the n-GaN layer between the gaps of a single device. This allows light from the channel between the GaN layers to penetrate through the rough surface before reaching the adjacent device, reducing the optical crosstalk between pixels.

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A method for mitigating non-uniform brightness and visible dimming zone boundaries in microLED displays. The method involves periodically shifting the dimming zones of the display to balance LED degradation and hide zone boundaries. By moving the dimming zones around, it prevents certain zones with always-bright content from prematurely dimming and hiding zone boundaries. The zones are shifted in a way that ensures uniformity and prevents visible boundaries.

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Micro-LED display assembly with improved light concentration and filtering for high-performance micro-LED displays. The assembly uses electroplated metal housings around each micro-LED pixel to concentrate and direct the emitted light upward. An RGB filter on top produces any desired color. The metal housing prevents light interference between pixels.

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Micro LED display device with improved color uniformity and manufacturing method to enable full-color micro LED displays. The device has barrier structures between adjacent micro LED pixels to prevent color mixing. The barriers are formed periodically on the growth substrate or light-emitting structure. This prevents color interference and light scattering between pixels. The barriers can be formed using a photosensitive agent or other techniques. By isolating the pixels, it enables applying color conversion materials or phosphors between the barriers for full-color micro LED displays.

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An LED display module with improved color uniformity and reduced pixel size by transfer printing techniques. The display has micro-LED chips arranged in a matrix on an active matrix substrate. This allows precise alignment and uniform height control. The chips are transferred in stages using adhesive carriers and solder bumps. Isolation walls are formed around each chip. Color cells with red, green, and blue conversion materials are matched to the chips. This enables accurate color mixing without interference.

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An LED pixel unit for display applications that reduces the distance between pixels and LEDs within each pixel compared to conventional packaging methods. The pixel has a light shield wall with holes for the red, green, and blue LEDs. Instead of separate red, green, and blue packages, the pixel contains monochromatic LED units that fill the corresponding holes in the shield wall. This allows closer packing of the subpixels and reduces light interference between colors.

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