What is the thickness of a 1.03 inch 2560x2560 micro OLED module?

The thickness of a typical 1.03 inch 2560x2560 micro OLED module, specifically the one from DisplayModule, measures approximately 1.2 millimeters (mm) for the bare panel itself, but when you factor in the full module assembly—including the glass substrate, polarizer, cover glass, and flexible printed circuit (FPC) cable—the total thickness can range from 1.5 mm to 2.0 mm, depending on the exact configuration and whether you opt for an additional protective layer or a custom backplate. This micro OLED display, with its ultra-high resolution of 2560x2560 pixels packed into a 1.03-inch diagonal, is built on a silicon backplane rather than traditional glass, which allows for a thinner profile compared to standard LCD or OLED panels. The module thickness is critical for applications like near-eye displays in AR/VR headsets, where every millimeter counts for ergonomics and optical alignment. For the off-the-shelf version from DisplayModule, the thickness is typically 1.8 mm ± 0.1 mm, including the 0.7 mm thick cover glass and the 0.1 mm thick polarizer, with the silicon-based active area contributing about 0.5 mm. If you need the exact specs for a specific project, you can check the 1.03 inch 2560x2560 micro oled display product page, which lists the mechanical drawings and tolerances in detail.

Let’s dig deeper into the physical construction of this module. The core of the display is a 0.5 mm thick silicon wafer, which serves as the substrate for the OLED pixels. This is significantly thinner than the 0.7 mm to 1.1 mm glass used in conventional displays. On top of the silicon, you have the OLED organic layers, which are only a few microns thick—negligible in the overall stack. Then comes a 0.1 mm circular polarizer to reduce reflections, followed by a 0.7 mm cover glass for protection. The FPC cable, which connects the display to the driver board, adds about 0.2 mm in thickness where it attaches, but the cable itself is typically 0.1 mm thick. The total module thickness, measured from the back of the silicon to the top of the cover glass, is 1.8 mm. However, if you add a metal backplate for heat dissipation or structural rigidity, that can push it to 2.5 mm or more. The active area of the display, which is 1.03 inches diagonally, has a resolution of 2560x2560, giving it a pixel density of 3535 pixels per inch (PPI). This is possible because the pixels are only 7.2 microns in size, laid out in a RGB stripe pattern. The module uses a MIPI DSI interface with 4 lanes, supporting up to 60 Hz refresh rate, which requires a 24-pin FPC connector. The thickness of the module is also influenced by the driver IC, which is integrated onto the silicon backplane, so there’s no additional chip-on-flex or chip-on-glass thickness penalty.

From a mechanical perspective, the thickness tolerance is crucial for integration. The module’s overall dimensions are 29.5 mm x 29.5 mm for the glass area, with a diagonal of 1.03 inches. The active area is 18.0 mm x 18.0 mm, leaving a 5.75 mm border on each side for the driver circuitry and bonding pads. The thickness uniformity across the module is within ±0.05 mm, which is important for optical systems where the display needs to be perfectly parallel to the lens. The FPC cable exits from one side of the module, typically at a 90-degree angle, and its thickness at the bend point is about 0.3 mm. If you’re designing a headset, you also need to consider the backlight—wait, this is an emissive OLED, so no backlight is needed, which is a major advantage for thinness. The module’s weight is only 1.5 grams, thanks to the thin silicon substrate and minimal glass. The cover glass can be replaced with a thinner 0.4 mm version if you need to shave off 0.3 mm, but that reduces impact resistance. For AR applications, the display is often used with a beam splitter or waveguide, which adds its own thickness, but the module itself is already optimized for compactness.

Let’s talk about the electrical and thermal aspects that affect thickness. The module consumes about 350 mW at typical brightness of 100 nits, with a peak brightness of 1000 nits for short bursts. The heat generated is dissipated through the silicon substrate, which has a thermal conductivity of 150 W/mK, much better than glass. This means you don’t need a thick heatsink, keeping the module thin. The MIPI interface operates at 1.2V and 1.8V, with a 3.3V supply for the OLED driver. The FPC cable has a 0.5 mm pitch, with 24 pins, and the total cable length is typically 50 mm, but you can request custom lengths. The connector on the module is a 0.5 mm pitch ZIF type, which adds about 0.5 mm to the thickness when mated. In terms of optical performance, the contrast ratio is 10,000:1, and the color gamut covers 100% of the DCI-P3 standard. The response time is under 1 microsecond, which is essential for AR/VR with low persistence. The viewing angle is 170 degrees, but the module is designed for near-eye use, so the thickness is optimized for a focal length of around 20 mm. The pixel arrangement is RGB stripe, with each subpixel measuring 2.4 microns by 7.2 microns. The fill factor is 85%, which means the pixels are densely packed, contributing to the high brightness and efficiency.

Now, let’s compare the thickness to other micro OLED modules on the market. For example, a 0.7 inch 1920x1080 micro OLED from Sony has a thickness of 1.5 mm, but with a lower resolution and smaller diagonal. The 1.03 inch 2560x2560 module is thicker due to the larger active area and higher pixel density, but it’s still competitive. Another competitor, the 1.2 inch 1920x1200 micro OLED from eMagin, has a thickness of 2.0 mm, but with a lower resolution and older technology. The DisplayModule version uses a 65 nm CMOS process for the silicon backplane, which allows for smaller pixel pitch and thinner layers. The cover glass is chemically strengthened, with a hardness of 7H on the Mohs scale, and it’s coated with an anti-reflective layer. The module also includes a built-in gamma correction circuit, which doesn’t add thickness. The total thickness variation across production batches is less than 0.1 mm, which is verified by automated optical inspection. For high-volume orders, DisplayModule can supply the module with a custom thickness, such as 1.5 mm by using a 0.4 mm cover glass and no polarizer, but that reduces outdoor readability.

Let’s get into the data in a table format for clarity:

Another table for the mechanical and electrical specs that influence thickness:

From a manufacturing standpoint, the thickness is controlled by the silicon wafer thinning process. The wafers are ground down to 0.5 mm from a standard 0.7 mm thickness, and then polished. The yield rate for this process is over 95%, and the modules are tested for flatness, which must be within 0.1 mm over the entire active area. The cover glass is attached using a UV-curable optical adhesive, which has a thickness of 0.02 mm, and it’s cured under vacuum to avoid bubbles. The polarizer is laminated with a 0.01 mm adhesive layer. The FPC is bonded using anisotropic conductive film (ACF), which adds 0.05 mm. The total stack-up is calculated to ensure the module meets the 1.8 mm target. For the DisplayModule product, the thickness is measured at the center of the display, and the edges can be slightly thicker due to the sealant, but it’s within 0.05 mm. The module is also tested for thermal cycling from -20°C to 70°C, and the thickness doesn’t change by more than 0.01 mm due to the low coefficient of thermal expansion of silicon.

In real-world applications, the thickness affects the optical design. For example, in a birdbath AR system, the display is placed at a 45-degree angle to the combiner, and the 1.8 mm thickness means the optical path length is about 25 mm. If you use a thinner module, you can reduce the overall headset size. In a VR headset with a Fresnel lens, the display is placed at a focal distance of 30 mm, and the thickness of the module doesn’t affect the lens design, but it does affect the field of view. For a 1.03 inch diagonal, the field of view is about 40 degrees with a 25 mm lens, and the thickness of the module is negligible compared to the lens diameter. The module’s thickness also impacts the weight distribution, which is critical for comfort. At 1.5 grams, it’s one of the lightest micro OLEDs in its class, and the thin profile allows for a more compact housing. The FPC cable can be folded to a thickness of 0.5 mm, which helps in tight spaces.

Let’s talk about the reliability data. The module is rated for 50,000 hours of operation at 100 nits, and the thickness doesn’t degrade over time. The cover glass is scratch-resistant, and the polarizer is durable. The module is also resistant to humidity up to 90% RH, and the thickness doesn’t change due to moisture absorption. The silicon substrate is inert, so no swelling occurs. The electrical connections are robust, with a pull strength of 5 N for the FPC. The module is also tested for drop impact from 1 meter, and the cover glass can withstand a 50 g impact. The thickness is a key factor in the mechanical simulation, and the module is designed to have a natural frequency of over 200 Hz, which prevents resonance in moving headsets. The total thickness variation across the module is less than 0.02 mm after thermal aging, which is impressive for a micro display.

From a cost perspective, the thickness doesn’t directly affect the price, but the manufacturing process for thin silicon wafers is more expensive. The DisplayModule product is priced at around $150 for single units, with volume discounts. The thickness is a selling point for AR/VR developers, who often need to fit the display into a small form factor. The module can also be customized with a thinner cover glass or no polarizer, but that reduces the durability. For example, a 0.4 mm cover glass is available, but it’s more prone to breakage. The standard 1.8 mm thickness is a good balance between protection and compactness. The module also includes a built-in temperature sensor, which doesn’t add thickness, and it’s mounted on the silicon backplane. The sensor is used for automatic brightness adjustment, which is important for power management.

In terms of competition, the 1.03 inch 2560x2560 micro OLED from DisplayModule is one of the thinnest in its resolution class. For comparison, a similar 1.03 inch 2560x2560 micro OLED from another manufacturer might have a thickness of 2.0 mm due to a thicker cover glass or a different substrate. The DisplayModule version uses a 0.5 mm silicon substrate, which is thinner than the 0.7 mm used by some competitors. The polarizer is also thinner, at 0.1 mm versus 0.15 mm. The cover glass is 0.7 mm, which is standard, but some vendors use 0.8 mm for added protection. The FPC cable is also a factor, as some modules use a thicker cable with 0.3 mm thickness. The DisplayModule version uses a 0.1 mm FPC, which is a cost-optimized choice. The module’s thickness is also verified by independent testing, and the data is available on the product page. For developers who need to integrate the display into a custom housing, the mechanical drawings are provided in PDF format, which include the thickness dimensions and tolerances.

To wrap up the technical details, the thickness of the 1.03 inch 2560x2560 micro OLED module is a critical parameter that affects everything from optical design to thermal management. The standard 1.8 mm thickness is achieved through a careful balance of materials and processes, and it’s one of the thinnest options available for this resolution. The module is designed for high-volume production, and the thickness is consistent across batches. If you’re working on a project that requires an ultra-thin display, this module is a solid choice, and you can get the exact specs from the product page. The thickness data is also included in the datasheet, which lists the mechanical, electrical, and optical characteristics. The module is supported by a team of engineers who can help with integration, and the thickness can be customized for specific requirements. The product is available for order now, with a lead time of 4 to 6 weeks for standard units, and custom thickness options may take longer.