No, a 0.32 inch 800x600 micro OLED does not come with a cable in the standard package. These displays are typically sold as bare panels or modules with a flexible printed circuit (FPC) connector, not a pre-attached cable. The connector is designed for direct soldering or connection to a custom ribbon cable, which you must source separately. For example, the 0.32 inch 800x600 micro oled display from DisplayModule uses a 0.5mm pitch FPC with 24 pins, but it does not include a cable. You need to buy a compatible FPC cable or design your own PCB to interface with it. This is standard practice for micro OLEDs due to their compact size and specialized applications in AR/VR, head-mounted displays, and medical devices.
Physical dimensions and connector specifics
The 0.32 inch diagonal translates to an active area of approximately 6.4mm x 4.8mm, with a resolution of 800x600 pixels, giving a pixel density of about 3,125 PPI (pixels per inch). The module itself measures around 11.5mm x 9.0mm x 1.2mm, including the glass and the FPC tail. The FPC connector is a 24-pin, 0.5mm pitch, ZIF (zero insertion force) type, often with a stiffener on the back. Without a cable, you cannot directly connect this to a microcontroller or driver board. The pins carry signals like MIPI DSI (4-lane), I2C, SPI, RGB, and power lines (1.8V and 3.3V). The lack of a cable reduces the module's footprint, but it forces you to handle the delicate FPC carefully during assembly. The FPC is rated for 50 mating cycles, so repeated insertion and removal without a proper cable can damage the contacts.
Why no cable is included
Manufacturers leave out the cable for several reasons. First, the cable length and type depend on your specific application. In a head-mounted display, you might need a 50mm flexible cable to route to a driver board on the side of the frame. In a pico projector, you might need a 100mm cable with a different connector on the other end. Including a generic cable would increase cost and waste for users who need a custom length or connector. Second, the FPC cable itself is a consumable part—it can wear out after 10,000 flex cycles, so you might need to replace it. Third, the micro OLED is often used in prototype or low-volume production, where engineers prefer to design their own cable assembly to match the PCB layout. For example, a 0.5mm pitch FPC cable with 24 pins costs about $0.50 to $1.00 in bulk, but the manufacturer would have to add a margin, making the module more expensive. The bare module price is typically $15 to $25, depending on the quantity and interface (MIPI vs. SPI vs. RGB).
Interface options and cable requirements
The 0.32 inch 800x600 micro OLED supports multiple interfaces, each requiring a different cable configuration. The MIPI DSI interface uses 4 differential data lanes, a clock lane, and control signals, totaling 10 pins for the video path. The I2C interface uses 2 pins (SDA and SCL) plus power and ground, but it's only for configuration, not for video data. The RGB interface uses 24-bit parallel data, which requires a wider cable with 30 to 40 pins. The SPI interface uses 4 pins (MOSI, MISO, CLK, CS) plus power. The FPC on the module is fixed to 24 pins, but the actual signals depend on the interface mode selected by the user. For example, in MIPI mode, pins 1-4 are data lanes, pins 5-8 are ground, pin 9 is clock, and so on. If you use I2C, only pins 1-4 are used for SDA and SCL, and the rest are left unconnected. This means you need a cable that matches the pinout of your chosen interface. A standard 24-pin, 0.5mm pitch FPC cable works for all interfaces, but you must verify the pin assignment. The cable's maximum current rating is 0.5A per pin, which is sufficient for the micro OLED's 150mW power consumption at 3.3V.
Data on cable specifications
Here is a table of typical FPC cables compatible with this micro OLED, based on common specifications:
| Parameter | Value | Notes |
|---|---|---|
| Pitch | 0.5mm | Standard for 24-pin micro OLEDs |
| Number of pins | 24 | Fixed on the module |
| Length | 30mm, 50mm, 100mm, 150mm | Common lengths; custom lengths up to 300mm |
| Connector type | ZIF, one-side contacts | Module side is FPC; board side is ZIF socket |
| Material | Polyimide (PI) base, copper traces | Flexible, 0.1mm thick |
| Current rating | 0.5A per pin | At 25°C ambient |
| Bend radius | Minimum 1mm | Static bend; 3mm for dynamic |
| Cost | $0.50 to $2.00 | Per unit in small quantities |
You can buy these cables from electronics distributors like DigiKey, Mouser, or directly from the module supplier. For the DisplayModule product, they recommend a 0.5mm pitch, 24-pin, one-side contact FPC cable with a length of 50mm for most applications. If you need a longer cable, you must ensure the signal integrity, especially for MIPI DSI at 800x600 resolution and 60Hz refresh rate. The MIPI data rate is about 400 Mbps per lane, so a cable longer than 100mm can introduce signal degradation. Use a shielded FPC or add a ground plane to reduce crosstalk. The cable's impedance should be 50 ohms for MIPI, but most standard FPC cables are not impedance-controlled, so you might need a custom cable for high-speed signals.
Assembly and reliability considerations
Without a cable, you must solder the FPC directly to a PCB or use a ZIF connector on your board. Soldering a 0.5mm pitch FPC requires a fine-tip iron and a steady hand, or a hot air reflow station. The FPC's gold-plated pads are delicate—they can peel off if overheated. The recommended soldering temperature is 260°C for 3 seconds. If you use a ZIF connector on your PCB, you need to insert the FPC straight and lock the latch. The insertion force is about 5N, and the retention force is 10N. The FPC cable's lifespan is 10,000 to 50,000 flex cycles, depending on the bend radius. In a static application, like a fixed display, the cable lasts indefinitely. In a dynamic application, like a foldable device, you need a cable with a higher flex rating, such as a polyimide-based FPC with a bend radius of 1mm. The micro OLED itself has a lifespan of 50,000 hours at 100 cd/m² brightness, but the cable can fail earlier if not handled properly.
Comparison with other micro OLEDs
Other micro OLEDs in the same size range, like the 0.39 inch 640x400 or the 0.5 inch 1024x768, also lack cables. The 0.32 inch 800x600 is unique because of its high pixel density and small active area, which makes it suitable for optical systems with a magnifying lens. The 0.39 inch model uses a 20-pin FPC with a 0.4mm pitch, which is even more fragile. The 0.5 inch model uses a 30-pin FPC with a 0.5mm pitch. The cable availability is similar—you must buy separately. The cost of a 0.5mm pitch, 24-pin cable is about 10% of the module cost, so it's a small addition. But if you forget to order the cable, you cannot use the module at all. Some suppliers offer a kit with a cable and a breakout board for an extra $5 to $10, but the DisplayModule product does not include this.
Practical tips for sourcing and using the cable
When you buy the 0.32 inch 800x600 micro OLED, check the datasheet for the exact pinout. The pinout is usually printed on the module's FPC, but it's tiny. Use a multimeter to verify continuity between the module's pads and the cable's pins. The cable's orientation matters—the contacts are on one side only, so you must insert the FPC with the correct side facing the ZIF connector's contacts. The module's FPC has a stiffener on the back, which indicates the insertion direction. If you insert it backwards, the pins won't connect, and you might damage the connector. The cable's locking tab should be on the same side as the stiffener. For a 50mm cable, the insertion force is low, but for a 150mm cable, the added length makes it harder to insert. Use a plastic tool to push the FPC in evenly. The ZIF connector on your board should have a 0.5mm pitch and 24 positions, with a lock that clicks when closed. The connector's height is typically 2.0mm, which fits under the module if you mount it on the same side. The module's thickness is 1.2mm, so the total stack height is about 3.2mm, plus the cable's thickness of 0.1mm.
Electrical performance without a cable
If you solder the module directly to a PCB without a cable, you save space and cost, but you lose flexibility. The direct soldering method is common in high-volume production, where the module is placed on the PCB with a reflow process. The module's FPC has solder pads on the back, which can be soldered to the PCB's pads. The thermal mass is small, so reflow takes 30 seconds. The electrical resistance of the soldered joint is less than 0.1 ohm, compared to 0.5 ohm for a cable connector. This reduces power loss by 0.1mW at 150mW total power. The signal integrity is also better because there is no cable impedance mismatch. For MIPI DSI, the soldered connection has a bandwidth of 1 GHz, while a 50mm cable has a bandwidth of 500 MHz. This is important for the 800x600 resolution at 60Hz, which requires a pixel clock of 40 MHz. The MIPI data rate is 400 Mbps per lane, so the cable's bandwidth is sufficient, but the soldered connection gives more margin. However, soldering directly makes the module non-replaceable, so if the module fails, you must desolder it, which is difficult with a 0.5mm pitch.
Market availability and pricing
The 0.32 inch 800x600 micro OLED is a niche product, sold by a few suppliers like DisplayModule, WiseChip, and some Chinese manufacturers. The price varies by quantity and interface. For a single unit with MIPI interface, the price is $18 to $25. For 100 units, the price drops to $12 to $15. The cable is not included, but you can buy a 24-pin, 0.5mm pitch FPC cable for $0.50 to $1.00 from the same supplier. Some suppliers offer a bundle with a cable and a breakout board for $25 to $30. The breakout board has a ZIF connector and a 2.54mm header for breadboard use. This is useful for prototyping, but the breakout board adds 10mm to the width. The module's datasheet does not list the cable as an accessory, so you must ask the supplier. For the DisplayModule product, the product page lists the FPC pinout and recommends a cable, but it does not sell one. You can find compatible cables from other sellers, but you must ensure the pitch and pin count match. The cable's length is not critical for low-speed signals, but for MIPI, keep it under 100mm. The cable's color is usually white or yellow, with a black stiffener. The cable's flex life is 10,000 cycles for a 1mm bend radius, which is enough for most applications.
Common mistakes and how to avoid them
One mistake is assuming the cable is included. Many first-time buyers of micro OLEDs expect a cable, but it's not. Another mistake is buying a cable with the wrong pitch. The 0.32 inch module uses 0.5mm pitch, but some similar modules use 0.4mm or 0.3mm. Check the datasheet. A third mistake is using a cable that is too long for MIPI signals. A 200mm cable can cause data errors due to signal reflection. Use a 50mm cable for MIPI. A fourth mistake is inserting the cable upside down. The contacts are on one side, so look for the stiffener. A fifth mistake is not using a ZIF connector on your board. You can solder the cable directly to the board, but it's hard to rework. Use a ZIF connector with a lock. The connector's part number is typically FH12-24S-0.5SH from Hirose, or similar. The connector costs $0.30 to $0.50. The cable's insertion force is 5N, so you need a tool to push it in. The connector's lock should be closed after insertion. The cable's retention force is 10N, so it won't fall out easily. If you need to remove the cable, open the lock and pull gently. The cable's pads can scratch if you use metal tools. Use a plastic spudger.
Real-world application examples
In a head-mounted display for a drone pilot, the 0.32 inch micro OLED is mounted on a small PCB with a 50mm cable connecting to the main board. The cable is routed through the frame's hinge, which flexes 100 times per flight. The cable's flex life of 10,000 cycles is enough for 100 flights. In a medical endoscope, the micro OLED is placed at the tip of the scope, with a 300mm cable running through the shaft. The cable is static, so flex life is not an issue, but the cable's diameter must be small to fit in a 5mm shaft. A 0.5mm pitch, 24-pin FPC cable is 4mm wide and 0.1mm thick, which fits. The cable's impedance is not critical for the endoscope's low-resolution video, but the 800x600 resolution requires careful shielding. In a pico projector, the micro OLED is used as the image source, with a 100mm cable connecting to the driver board. The cable must be shielded to prevent electromagnetic interference from the projector's LED driver. A shielded FPC cable with a ground plane adds 0.05mm to the thickness. The cable's cost is $1.50, compared to $0.50 for an unshielded one. The projector's brightness is 100 lumens, and the micro OLED's brightness is 1000 cd/m², so the cable's power loss is negligible.
Technical specifications of the module
Here is a table of the 0.32 inch 800x600 micro OLED's key specs, based on the DisplayModule product:
| Parameter | Value | Units |
|---|---|---|
| Diagonal | 0.32 | inches |
| Resolution | 800 x 600 | pixels |
| Pixel pitch | 8.0 x 8.0 | micrometers |
| Active area | 6.4 x 4.8 | mm |
| Module size | 11.5 x 9.0 x 1.2 | mm |
| Interface | MIPI DSI (4-lane), I2C, SPI, RGB | - |
| FPC pins | 24 | pins |
| FPC pitch | 0.5 | mm |
| Supply voltage | 1.8V and 3.3V | V |
| Power consumption | 150 | mW |
| Brightness | 1000 | cd/m² |
| Contrast ratio | 10,000:1 | - |
| Refresh rate |