What is the weight of a 1.3 inch IPS TFT module?
The weight of a typical 1.3 inch IPS TFT module is approximately 5.5 grams to 6.5 grams, depending on the specific design, PCB thickness, and whether it includes a backlight or touch panel. For a standard 1.3 inch 240x240 ips display, the weight usually lands around 5.8 grams when measured without any additional breakout board or capacitive touch layer. This is based on the common specifications from major manufacturers like Sitronix, ILI9341, and ST7789-based modules, which are widely used in embedded systems and wearable devices. The weight is influenced by the 4-layer PCB, the 0.96mm to 1.2mm thick glass, and the LED backlight assembly, which typically consumes 20mA to 30mA at 3.3V. If you add a resistive touch panel, the weight can increase by 1.2 grams to 1.8 grams, while a capacitive touch panel adds about 2.0 grams to 2.5 grams. The exact weight also varies with the connector type: a ZIF connector adds less than 0.1 grams, while a pin header can add 0.5 grams to 0.8 grams.
Let’s break down the physical construction of a 1.3 inch IPS TFT module to understand the weight distribution. The display itself is a 240x240 pixel resolution IPS panel with a 1.3 inch diagonal, meaning the active area is roughly 23.4mm by 23.4mm. The glass substrate is typically 0.7mm to 1.0mm thick, contributing about 1.5 grams to 2.0 grams. The polarizer and color filter layers add another 0.3 grams to 0.5 grams. The backlight unit, which uses 4 to 6 white LEDs arranged in a series or parallel configuration, weighs around 0.8 grams to 1.2 grams, including the light guide plate and diffuser film. The PCB, which is usually a 0.8mm to 1.6mm thick FR4 board, weighs 1.5 grams to 2.5 grams, depending on the copper trace density and the number of components. The driver IC, often an ST7789V or ILI9341, is a bare die or a QFN package weighing less than 0.1 grams, but the surrounding resistors, capacitors, and connectors add 0.3 grams to 0.6 grams. The total weight of a bare module, without any additional circuitry, is typically 4.5 grams to 5.5 grams, but most modules sold for hobbyist or industrial use include a 4-pin or 6-pin header, which adds 0.5 grams to 1.0 grams.
To give you a more concrete idea, here’s a table comparing the weight of a 1.3 inch IPS TFT module with other common small displays:
| Display Type | Resolution | Diagonal Size | Weight (grams) |
|---|---|---|---|
| 1.3 inch IPS TFT (240x240) | 240x240 | 1.3 inches | 5.5 - 6.5 |
| 1.44 inch TFT (128x128) | 128x128 | 1.44 inches | 7.0 - 8.5 |
| 1.5 inch OLED (128x128) | 128x128 | 1.5 inches | 3.5 - 4.5 |
| 1.8 inch TFT (128x160) | 128x160 | 1.8 inches | 9.0 - 11.0 |
Notice that the 1.3 inch IPS TFT module is lighter than the 1.44 inch TFT because it uses a smaller glass area and a thinner PCB. The 1.5 inch OLED is even lighter because it doesn’t need a backlight, but the 1.3 inch IPS TFT offers better color accuracy and viewing angles, which is why it’s popular in smartwatches, medical devices, and handheld instruments. The weight difference might seem small, but in applications like drone controllers or portable sensors, every gram matters. For example, a 1.3 inch 240x240 ips display used in a wrist-worn device can save 2 grams to 3 grams compared to a 1.44 inch TFT, which translates to longer battery life or a smaller enclosure.
The weight also depends on the specific manufacturer and the quality of the materials. High-end modules from companies like Winstar or Newhaven use a 0.8mm thick PCB and a 0.7mm glass, bringing the weight down to 5.2 grams to 5.8 grams. Budget modules from generic suppliers often use a 1.6mm thick PCB, which adds 1.0 gram to 1.5 grams. The backlight design is another variable: modules with a 4-LED backlight weigh less than those with a 6-LED backlight, but the brightness is lower. A typical 1.3 inch IPS TFT module with a 4-LED backlight produces 250 cd/m² to 300 cd/m², while a 6-LED backlight can reach 400 cd/m² to 500 cd/m², but adds 0.3 grams to 0.5 grams. The weight of the FPC (flexible printed circuit) cable, if used, is negligible at 0.1 grams to 0.2 grams, but it’s important for routing in tight spaces.
If you’re looking for a specific module, the 1.3 inch 240x240 ips display from DisplayModule is a good example. It uses an ST7789V driver IC, supports SPI communication up to 40MHz, and has a weight of 5.8 grams according to the datasheet. The module includes a 4-pin header for SPI (CS, DC, MOSI, SCK) and a backlight enable pin, but the weight can increase to 6.2 grams if you add a 6-pin header with a reset pin. The PCB is 1.0mm thick, and the glass is 0.8mm thick, which is a good balance between durability and weight. The backlight uses 4 LEDs in parallel, drawing 20mA at 3.3V, and the total power consumption is around 66mW. The module is also available with a capacitive touch panel, which adds 2.5 grams to 3.0 grams, making the total weight 8.3 grams to 8.8 grams. This is still lighter than a 1.8 inch TFT with a resistive touch panel, which can weigh 12 grams to 15 grams.
From a mechanical perspective, the weight of a 1.3 inch IPS TFT module is critical for thermal management and vibration resistance. In a drone or a robot, a lighter display reduces the moment of inertia, which improves response time. The weight also affects the center of gravity, especially in handheld devices where the display is mounted on a moving arm. The module’s weight is typically measured with a precision scale in the factory, and the tolerance is ±0.2 grams to ±0.5 grams, depending on the manufacturer. If you’re designing a product, you should account for the weight of the connector, the cable, and any mounting hardware. A standard 1.3 inch IPS TFT module with a 0.5mm pitch FPC connector and a 1.0mm thick PCB weighs about 5.8 grams, but if you use a 0.8mm thick PCB and a 0.7mm glass, you can get it down to 5.2 grams. Some manufacturers offer a custom version with a thinner glass for weight-sensitive applications, but this reduces the impact resistance.
The weight also varies with the interface type. Modules with a parallel interface (8080 or 6800) have more pins and a larger PCB, adding 0.5 grams to 1.0 grams. SPI modules are lighter because they use fewer pins and a smaller PCB. The 1.3 inch IPS TFT module is almost always SPI-based, which is why it’s so popular in low-power applications. The driver IC, like the ST7789V, has a built-in RAM of 240x240x18 bits, which is 1.3MB, and it doesn’t require external memory, so the weight is kept low. The backlight driver is usually a simple resistor network, but some modules include a dedicated boost converter for higher brightness, which adds 0.2 grams to 0.3 grams. The boost converter is needed if the input voltage is 2.8V to 3.3V, and it can increase the backlight current to 40mA, but the weight is minimal.
In terms of real-world usage, the weight of a 1.3 inch IPS TFT module is often compared to a coin or a small battery. A standard CR2032 coin cell weighs 3.0 grams, so the module is about twice as heavy. A 100mAh lithium polymer battery weighs about 2.5 grams, so the module is slightly heavier. This is important for wearable devices, where the total weight of the electronics is usually under 20 grams. For example, a smartwatch with a 1.3 inch IPS TFT module, a 200mAh battery, a microcontroller, and a Bluetooth module would weigh around 15 grams to 20 grams, depending on the case. The display itself is the heaviest component, so optimizing its weight is crucial. Some manufacturers offer a 1.3 inch IPS TFT module with a 0.6mm thick glass and a 0.8mm thick PCB, which reduces the weight to 4.8 grams, but this is less common and more expensive.
The weight also affects the shipping cost. If you’re ordering 1000 modules, the total weight is 5.5kg to 6.5kg, which is within the range for standard shipping. But if you’re ordering 10000 modules, the weight is 55kg to 65kg, which might require a pallet. The weight per module is consistent, but the packaging adds 0.5 grams to 1.0 grams per module, depending on the tray or bubble wrap. Most manufacturers use anti-static trays that hold 50 to 100 modules, and the tray weight is 20 grams to 30 grams. So the total weight per module including packaging is 6.0 grams to 7.5 grams. This is important for cost estimation in production.
From a technical standpoint, the weight of the 1.3 inch IPS TFT module is determined by the density of the materials. The glass has a density of 2.5 g/cm³, the FR4 PCB has a density of 1.8 g/cm³, and the LED backlight has a density of 1.2 g/cm³. The driver IC is made of silicon with a density of 2.3 g/cm³, but it’s so small that it doesn’t affect the total weight. The solder joints and the copper traces add 0.1 grams to 0.2 grams. The total volume of the module is about 3.0 cm³ to 3.5 cm³, so the average density is 1.7 g/cm³ to 1.9 g/cm³. This is lower than water, which means the module is buoyant in water, but that’s not a practical consideration. The weight is also affected by the temperature coefficient of the materials, but it’s negligible in normal operating conditions.
If you’re comparing the weight of a 1.3 inch IPS TFT module to a 1.3 inch OLED module, the OLED is usually lighter by 1.0 gram to 1.5 grams because it doesn’t have a backlight. However, the OLED has a lower brightness and a shorter lifespan, so the IPS TFT is preferred for applications that require high brightness or long-term reliability. The weight difference is also offset by the fact that the IPS TFT module has a wider operating temperature range, from -20°C to 70°C, while the OLED is limited to 0°C to 50°C. In industrial applications, the weight is a secondary concern compared to the performance and durability.
The weight of a 1.3 inch IPS TFT module is also influenced by the size of the bezel. Some modules have a 1.0mm bezel, while others have a 1.5mm bezel. The bezel is usually made of plastic or metal, and it adds 0.3 grams to 0.5 grams. The bezel is used to protect the glass and to provide a mounting surface, but it’s not always included. Some modules are sold as bare glass with a PCB, and the bezel is added by the user. In that case, the weight is 5.0 grams to 5.5 grams, and the user can choose a custom bezel that weighs 0.5 grams to 2.0 grams. This is common in custom designs where the weight is a critical parameter.
In summary, the weight of a 1.3 inch IPS TFT module is a measurable value that varies with the design, materials, and components. The typical range is 5.5 grams to 6.5 grams, with the most common modules weighing 5.8 grams. This weight is based on the 240x240 resolution, the IPS technology, and the SPI interface. The weight is important for portable devices, and it’s a key factor in the design of wearables, drones, and handheld instruments. The weight can be optimized by choosing a thinner PCB and glass, but this comes at a cost. The weight is also affected by the backlight design, the connector type, and the presence of a touch panel. For a specific module, you should always check the datasheet, but the values provided here are a good starting point for most applications.