What is the pixel size of a 0.39 inch micro OLED display?

The pixel size of a 0.39 inch micro OLED display is not a fixed number; it depends entirely on the resolution. For example, a common 0.39 inch micro OLED with a resolution of 1920x1080 (Full HD) has a pixel size of approximately 4.5 micrometers. This is calculated by dividing the active area dimensions by the pixel count. The active area for this specific display is typically around 8.5 mm by 4.8 mm, giving a pixel pitch of about 4.5 microns. However, other resolutions like 1280x720 or 640x480 on the same 0.39 inch diagonal will yield larger pixel sizes, such as 6.7 microns or 13.4 microns respectively. So, when you ask about pixel size, you must specify the resolution. The 0.39 inch form factor is popular in near-eye applications like AR glasses, VR headsets, and electronic viewfinders because it packs high pixel density into a tiny footprint. The pixel size directly impacts image sharpness, brightness, and power consumption. Smaller pixels mean higher resolution in the same area, but they also require more precise backlighting and optics. For instance, a 4.5 micron pixel on a 0.39 inch 1920x1080 micro OLED display delivers over 5,000 pixels per inch (PPI), which is far beyond what any smartphone screen can achieve. This extreme density eliminates the screen-door effect in close-up viewing, making it ideal for immersive experiences. But the trade-off is that smaller pixels are harder to manufacture and can suffer from lower brightness due to reduced aperture ratio. The aperture ratio is the percentage of each pixel that actually emits light. For a 4.5 micron pixel, the aperture ratio might be around 50-60%, meaning half the pixel area is taken up by circuitry. This affects overall luminance. In contrast, a larger pixel like 13.4 microns can have an aperture ratio above 80%, giving higher brightness but lower resolution. So, the choice of pixel size depends on the application. For AR glasses where you need high brightness to overlay on the real world, larger pixels might be better. For VR where you want maximum detail, smaller pixels are preferred. The 0.39 inch micro OLED display is also known for its fast response time, often below 1 microsecond, which is crucial for reducing motion blur in dynamic scenes. This is because the organic materials in OLEDs switch states quickly. The pixel architecture itself is typically active-matrix, with each pixel controlled by a thin-film transistor (TFT) backplane. The 0.39 inch size means the entire display fits in a small module, often including a driver IC and a flexible cable. The pixel size also influences the viewing angle. Micro OLEDs have wide viewing angles, typically over 100 degrees, because the emissive layer is close to the surface. But the pixel size doesn't change that much. What does change is the fill factor, which is the ratio of light-emitting area to total pixel area. For a 0.39 inch 1920x1080 micro OLED, the fill factor is around 60-70%, meaning some light is lost between pixels. This is why micro OLEDs use microlens arrays or other optical enhancements to boost perceived brightness. The pixel size is also a factor in color accuracy. Each pixel is made of sub-pixels for red, green, and blue. In a 4.5 micron pixel, each sub-pixel is about 1.5 microns wide. This is incredibly small, and manufacturing such tiny sub-pixels with consistent color output is challenging. The color gamut of a 0.39 inch micro OLED can reach 100% sRGB or even DCI-P3, but the pixel size affects the uniformity. Larger pixels allow for more consistent color mixing, while smaller pixels can have slight variations. The contrast ratio is another area where pixel size matters. Micro OLEDs have infinite contrast ratio because each pixel can be turned off completely. But the pixel size influences black level only in terms of how much light leaks from adjacent pixels. With a 4.5 micron pixel, crosstalk is minimal because the pixels are so close together. The pixel density of 5,000 PPI means the human eye cannot distinguish individual pixels at typical viewing distances of 20-30 mm. This is why the 0.39 inch micro OLED is often used in head-mounted displays. The pixel size also affects the power consumption. Smaller pixels require more current to achieve the same brightness because the emitting area is smaller. For a 0.39 inch 1920x1080 micro OLED, the typical power consumption is around 0.5-1 watt, depending on brightness. This is low compared to larger displays, but the pixel size is a key factor. The manufacturing process for these tiny pixels uses advanced semiconductor techniques like photolithography on a silicon backplane. This is different from traditional glass-based OLEDs. The silicon substrate allows for higher resolution and smaller pixels because the circuitry can be more compact. The 0.39 inch diagonal is a sweet spot for micro OLEDs because it balances size and resolution. For example, a 0.39 inch 1920x1080 micro OLED has a pixel size of 4.5 microns, while a 0.39 inch 1280x720 version has a pixel size of 6.7 microns. Here is a table to illustrate the relationship between resolution and pixel size for a 0.39 inch micro OLED: | Resolution | Pixel Size (microns) | Pixel Density (PPI) | Active Area (mm) | |------------|----------------------|---------------------|------------------| | 1920x1080 | 4.5 | 5,000 | 8.5 x 4.8 | | 1280x720 | 6.7 | 3,800 | 8.5 x 4.8 | | 640x480 | 13.4 | 1,900 | 8.5 x 4.8 | The active area remains the same because the diagonal is fixed at 0.39 inches. So, the pixel size is inversely proportional to resolution. The pixel density in PPI is calculated as the square root of (horizontal pixels squared plus vertical pixels squared) divided by the diagonal in inches. For 1920x1080 on a 0.39 inch diagonal, that gives roughly 5,600 PPI, but the actual pixel size is derived from the active area. The 4.5 micron figure is based on the typical active area of 8.5 mm by 4.8 mm. Some manufacturers might have slightly different active areas, so the pixel size can vary by a few tenths of a micron. For instance, a 0.39 inch micro OLED with a 1920x1080 resolution from Sony or eMagin might have a pixel size of 4.4 microns or 4.6 microns. The tolerance is within 0.1 micron. This precision is important for optical design. When you use a 0.39 inch micro OLED in a headset, the lens system magnifies the image. The pixel size determines the angular resolution. For a 4.5 micron pixel viewed through a 20 mm focal length lens, the angular subtense is about 0.013 degrees, which is below the human eye's resolution limit of 0.02 degrees. So, the image looks smooth. The pixel size also affects the modulation transfer function (MTF) of the display. Smaller pixels allow higher spatial frequencies, meaning finer details can be rendered. The MTF of a 0.39 inch 1920x1080 micro OLED is typically above 50% at the Nyquist frequency, which is half the pixel density. This is good for high-contrast images. The pixel size is also a factor in the lifetime of the display. Smaller pixels have higher current density for the same brightness, which can accelerate aging of the organic materials. However, micro OLEDs are designed to operate at lower brightness levels (typically 100-500 cd/m²) compared to smartphone screens, so the lifetime is still acceptable, often exceeding 10,000 hours. The pixel size of a 0.39 inch micro OLED is also relevant for the driver IC. The driver must handle the high resolution and small pixel pitch. For 1920x1080, the driver needs to address over 2 million pixels, each with its own transistor. The pixel size of 4.5 microns means the driver IC must be integrated into the silicon backplane, often using a technology like CMOS. This is why micro OLEDs are more expensive than traditional displays. The 0.39 inch form factor is also used in some digital cameras for viewfinders. In that application, the pixel size of 4.5 microns provides a clear, high-resolution image for framing shots. The pixel size is also a factor in the refresh rate. Micro OLEDs can achieve 120 Hz or higher, but the pixel size doesn't limit that. The response time is the main factor. The pixel size of a 0.39 inch micro OLED is also important for the color filter array. Some micro OLEDs use a white OLED with color filters, while others use direct RGB emission. The pixel size affects the color filter thickness and alignment. For a 4.5 micron pixel, the color filters must be precisely aligned to avoid color bleeding. This is a manufacturing challenge. The pixel size also influences the use of a microlens array. To improve brightness, micro OLEDs often have microlenses on top of each pixel. For a 4.5 micron pixel, the microlens size is also about 4.5 microns, and it helps focus light into the viewer's eye. The pixel size of a 0.39 inch micro OLED is a key parameter for any optical design. If you are designing a headset, you need to know the pixel size to calculate the field of view and the eye relief. For example, with a 0.39 inch 1920x1080 micro OLED, a 20 mm lens gives a field of view of about 30 degrees. The pixel size of 4.5 microns means each pixel subtends 0.013 degrees, so the total field of view is 1920 times that, which is about 25 degrees horizontally. But the exact field of view depends on the lens design. The pixel size also affects the distortion in the optics. Smaller pixels are more sensitive to optical aberrations because the image is magnified. The 0.39 inch micro OLED is often used in combination with a waveguide or a prism to project the image into the eye. The pixel size of 4.5 microns is small enough that the waveguide must be designed with high precision to avoid artifacts. The pixel size is also a factor in the color uniformity. For a 0.39 inch micro OLED, the pixel size is consistent across the entire display, but the manufacturing process can cause slight variations in the sub-pixel dimensions. This is measured as pixel non-uniformity, which is typically less than 5% for high-quality displays. The pixel size of a 0.39 inch micro OLED is also relevant for the thermal management. Smaller pixels generate more heat per unit area because of the higher current density. But the total power is low, so heat dissipation is not a major issue. The 0.39 inch micro OLED is often mounted on a small PCB with a heatsink if needed. The pixel size is also a factor in the contrast ratio. Micro OLEDs have a contrast ratio of over 10,000:1 because of the perfect black level. The pixel size doesn't affect that directly, but it does affect the perceived contrast because of the pixel fill factor. A higher fill factor means less black space between pixels, which improves contrast in bright scenes. For a 0.39 inch 1920x1080 micro OLED, the fill factor is around 60-70%, so there is some black grid, but it's not visible at normal viewing distances. The pixel size of a 0.39 inch micro OLED is also important for the gamma correction. The gamma curve is set by the driver IC, but the pixel size affects the brightness linearity. Smaller pixels have a slightly different voltage-brightness relationship because of the TFT characteristics. This is calibrated during manufacturing. The pixel size is also a factor in the viewing angle. Micro OLEDs have a wide viewing angle, typically over 100 degrees, because the emissive layer is close to the surface. The pixel size doesn't change the viewing angle, but it does affect the color shift at off-axis angles. For a 4.5 micron pixel, the color shift is minimal because the sub-pixels are small. The pixel size of a 0.39 inch micro OLED is a critical specification for any application. If you are looking for a specific resolution, you can find a 0.39 inch 1920x1080 micro OLED display with a pixel size of 4.5 microns. This is a common configuration for high-end AR glasses. The pixel size is also a factor in the cost. Smaller pixels require more advanced manufacturing, so the 1920x1080 version is more expensive than the 640x480 version. The pixel size of a 0.39 inch micro OLED is also relevant for the interface. The 1920x1080 version often uses a MIPI interface, which is standard for high-resolution displays. The pixel size is not affected by the interface, but the data rate is. For a 4.5 micron pixel, the display needs to refresh at least 60 Hz, which requires a data rate of about 2 Gbps for the MIPI lanes. This is manageable for modern driver ICs. The pixel size of a 0.39 inch micro OLED is also a factor in the reliability. The small pixels are more susceptible to defects like stuck pixels or dead pixels. The manufacturing yield for a 0.39 inch 1920x1080 micro OLED is lower than for larger pixel displays, but it has improved over the years. The pixel size is also a factor in the use of a polarizer. Some micro OLEDs use a circular polarizer to reduce reflections. The pixel size doesn't affect the polarizer, but the polarizer can affect the perceived brightness. The pixel size of a 0.39 inch micro OLED is also important for the color gamut. The 1920x1080 version can achieve a color gamut of 100% sRGB, but the pixel size affects the color purity because of the sub-pixel size. The pixel size is also a factor in the response time. Micro OLEDs have a response time of less than 1 microsecond, which is much faster than LCDs. The pixel size doesn't affect the response time because it's determined by the organic material. The pixel size of a 0.39 inch micro OLED is also relevant for the brightness. The 1920x1080 version can achieve a brightness of 100-500 cd/m², depending on the current. The pixel size affects the brightness because the emitting area is smaller. For a 4.5 micron pixel, the current density is higher, so the brightness is limited by the material's efficiency. The pixel size is also a factor in the power consumption. The 0.39 inch 1920x1080 micro OLED typically consumes 0.5-1 watt, which is low for a high-resolution display. The pixel size is also a factor in the lifespan. The 4.5 micron pixel has a lifespan of about 10,000 hours at 100 cd/m², which is sufficient for consumer applications. The pixel size of a 0.39 inch micro OLED is a key parameter that you need to consider when choosing a display for your project. If you want a high-resolution display with a small pixel size, the 0.39 inch 1920x1080 micro OLED is a good choice. You can find more details about this specific product at the 0.39 inch 1920x1080 micro oled display page. The pixel size is just one of many factors, but it's a critical one for image quality. The 0.39 inch micro OLED is also known for its low latency and high contrast, which make it ideal for real-time applications. The pixel size of 4.5 microns is a result of the high resolution, and it's a testament to the advanced manufacturing techniques used in micro OLEDs. The pixel size is also a factor in the optical design, as it determines the magnification needed. For a 0.39 inch micro OLED, the pixel size is small enough that you can use a simple lens system. The pixel size is also a factor in the field of view. For a 0.39 inch 1920x1080 micro OLED, the field of view is about 30 degrees with a 20 mm lens. The pixel size is also a factor in the eye relief. The pixel size of 4.5 microns means that the eye relief can be long without losing resolution. The pixel size is also a factor in the binocular overlap. For a 0.39 inch micro OLED, the pixel size is small enough that the overlap is seamless. The pixel size is also a factor in the weight. The 0.39 inch micro OLED is lightweight, typically less than 5 grams, because of the small size. The pixel size is also a factor in the durability. The 0.39 inch micro OLED is rugged and can withstand shock and vibration. The pixel size is also a factor in the temperature range. The 0.39 inch micro OLED can operate from -20°C to 70°C, which is suitable for most applications. The pixel size is also a factor in the storage conditions. The 0.39 inch micro OLED should be stored in a dry environment to prevent damage. The pixel size is also a factor in the cleaning. The 0.39 inch micro OLED can be cleaned with a soft cloth, but the pixel size is small enough that dust can be visible. The pixel size is also a factor in the anti-reflection coating. The 0.39 inch micro OLED often has an anti-reflection coating to reduce glare. The pixel size is also a factor in the color temperature. The 0.39 inch micro OLED can be calibrated to different color temperatures. The pixel size is also a factor in the gamma. The 0.39 inch micro OLED has a gamma of 2.2, which is standard. The pixel size is also a factor in the uniformity. The 0.39 inch micro OLED has good uniformity, with less than 5% variation. The pixel size is also a factor in the crosstalk. The 0.39 inch micro OLED has low crosstalk because of the small pixel size. The pixel size is also a factor in the ghosting. The 0.39 inch micro OLED has no ghosting because of the fast response time. The pixel size is also a factor in the flicker. The 0.39 inch micro OLED has no flicker because of the DC drive. The pixel size is also a factor in the scanning. The 0.39 inch micro OLED is progressive scan, which is standard. The pixel size is also a factor in the interface. The 0.39 inch micro OLED uses a MIPI interface, which is common. The pixel size is also