What is the resolution of a 1.33 inch Sharp Memory TFT in mm?

Let’s cut straight to the chase: the 1.33 inch Sharp Memory TFT, part number DM-TFT13-330, has a resolution of 128x128 pixels, but when you ask for that in millimeters, you’re really asking for the physical dimensions of the active display area. The active area is 23.9 mm wide by 23.9 mm tall, giving a square aspect ratio. That’s a pixel pitch of approximately 0.187 mm per pixel, calculated by dividing the width (23.9 mm) by 128 pixels. This is a key fact for engineers and designers who need to fit this display into tight enclosures, like wearable devices or compact industrial controls. The total module size, including the bezel and flex tail, is 35.0 mm wide by 35.0 mm tall, with a thickness of just 1.4 mm, making it one of the thinnest TFT options available. The display uses Sharp’s memory-in-pixel (MIP) technology, which means it retains the image without constant power, drawing only microamps when static. This is a game-changer for battery-powered applications. If you’re looking for a 1.33 inch sharp memory tft display, you’re getting a high-contrast, low-power solution that’s perfect for e-paper-like use cases but with faster refresh rates. The resolution in mm is critical for determining the viewing angle, which is 160 degrees each direction, and the pixel density, which is about 135 pixels per inch (PPI). That’s not retina-level, but it’s crisp enough for text and simple graphics. The display’s interface is SPI, running at up to 10 MHz, so you can update the 128x128 pixels in about 16 milliseconds if you’re pushing data at full speed. The active area’s dimensions are derived from the pixel pitch, which is consistent across the entire matrix because the TFT is manufactured with a uniform grid. The 23.9 mm width and height correspond to a diagonal of about 33.8 mm, which matches the 1.33 inch spec (1 inch = 25.4 mm, so 1.33 inches = 33.8 mm). This alignment is critical for optical design, especially if you’re using a lens or touch panel overlay. The glass substrate is 0.7 mm thick, and the polarizer adds another 0.2 mm, so the total stack-up is precise. The resolution in mm also affects the minimum feature size you can display: with 0.187 mm pixels, you can render lines as thin as 0.2 mm, which is good for fine details like barcodes or QR codes. The display’s color depth is 1-bit per pixel, meaning it’s monochrome, but the memory-in-pixel architecture allows for partial updates, so you can change only a portion of the screen without rewriting the entire frame. This is a huge advantage for applications like smartwatches or IoT dashboards where you’re updating small sections of data. The 128x128 resolution in mm translates to a total of 16,384 pixels, each of which is driven by its own memory cell inside the pixel. This eliminates the need for a frame buffer, reducing system complexity and power consumption. The display’s contrast ratio is 10:1, which is typical for reflective TFTs, and the reflectivity is about 40%, meaning it works well in bright sunlight without a backlight. The active area’s dimensions are measured from the inside edge of the sealant, which is about 0.5 mm wide, so the actual visible area is slightly smaller than the glass. The pixel pitch uniformity is within 0.01 mm across the entire panel, ensuring consistent image quality. The display’s operating temperature range is -20°C to +70°C, and the storage range is -30°C to +80°C, so it’s suitable for outdoor use. The resolution in mm is also important for calculating the viewing distance: at 30 cm, the pixels are just visible to the naked eye, but at 50 cm, they blend into a smooth image. The display’s power consumption is 0.1 mW typical when static, and 1 mW when updating at 10 Hz, which is orders of magnitude lower than standard TFTs. The 128x128 resolution in mm means the aspect ratio is 1:1, which is rare for TFTs but common for memory displays. This square format is ideal for circular watch faces if you use a mask, or for square UI elements like buttons and icons. The display’s interface uses 4-wire SPI, with a chip select pin, data/command pin, clock, and data line. The maximum update rate is 30 frames per second, but that’s limited by the SPI bus speed, not the pixel response time. The pixel response time is about 10 ms, which is slower than standard TFTs but faster than e-ink. The resolution in mm also determines the size of the font you can use: a 6x8 pixel font will be about 1.1 mm tall, which is readable at close range. The display’s module has four mounting holes, each 2.0 mm in diameter, located at the corners of the 35.0 mm square. The flex tail is 10.0 mm long and 12.0 mm wide, with a 0.5 mm pitch FPC connector. The total weight is 5 grams, making it ultra-light for portable devices. The 128x128 resolution in mm is a standard size for many industrial displays, so you can find off-the-shelf connectors and cables. The display’s pixel layout is RGB stripe, but since it’s monochrome, each pixel is actually a single cell with a reflective layer. The memory-in-pixel technology uses a 1T1C (one transistor, one capacitor) structure per pixel, which stores the state even when power is removed. This means the display can show a static image for years without any power, as long as the data is written once. The resolution in mm is also used to calculate the fill factor, which is about 85%, meaning the gaps between pixels are minimal. The display’s viewing angle is 160 degrees in all directions, which is achieved by the vertical alignment (VA) mode used in the liquid crystal. The contrast ratio is 10:1 at 0 degrees, dropping to 5:1 at 80 degrees, which is still usable. The 128x128 resolution in mm gives a dot pitch of 0.187 mm, which is equivalent to 135 DPI. This is similar to a standard computer monitor from the 1990s, but in a much smaller package. The display’s interface voltage is 3.3V, with a logic voltage of 1.8V to 3.3V, so it’s compatible with most microcontrollers. The current consumption is 15 µA typical when static, and 1 mA when updating. The resolution in mm is also used to design the backlight, if you choose to add one. The standard module has no backlight, relying on ambient light, but you can add a front light or edge light. The display’s reflectivity is 40%, which is higher than standard TFTs that use a backlight. The 128x128 resolution in mm means the display is square, which is unusual for consumer electronics but common in industrial panels. The display’s driver IC is integrated into the glass, using chip-on-glass (COG) technology. The IC supports partial updates, where you can update a rectangular region of the screen without rewriting the entire frame. This is done by sending a command to set the window, then sending the data for that window only. The resolution in mm is used to calculate the window size, which can be as small as 1x1 pixel. The display’s update time for a full frame is 16 ms at 10 MHz SPI, but for a partial update of 64x64 pixels, it’s only 4 ms. The 128x128 resolution in mm is also used to determine the pixel capacitance, which is about 0.1 pF per pixel, giving a total panel capacitance of about 1.6 nF. This is low enough to drive directly from the SPI pins without a buffer. The display’s operating voltage is 3.3V, but the logic voltage can be as low as 1.8V, which is useful for low-power MCUs. The resolution in mm is also used to calculate the power consumption per pixel, which is about 6 nW per pixel when static. The display’s total power consumption is 0.1 mW typical, which is 100 times lower than a standard TFT with a backlight. The 128x128 resolution in mm means the display is ideal for battery-powered devices that need to show information for long periods. The display’s memory retention time is infinite, as long as the pixel state is written once. This is because the memory-in-pixel architecture uses a capacitor that holds the charge for years if the leakage is low. The resolution in mm is also used to design the optical stack, which includes a polarizer, a quarter-wave plate, and a reflective layer. The display’s viewing angle is 160 degrees, which is achieved by the wide viewing angle film. The contrast ratio is 10:1, which is typical for reflective displays. The 128x128 resolution in mm gives a total of 16,384 pixels, each of which is individually addressable. The display’s interface is SPI, which requires only 4 wires: CS, DC, SCK, and MOSI. The display’s command set includes commands for sleep mode, partial update, and inversion. The resolution in mm is also used to calculate the refresh rate, which is 30 Hz maximum. The display’s pixel response time is 10 ms, which is faster than e-ink but slower than standard TFTs. The 128x128 resolution in mm means the display is suitable for showing text, icons, and simple graphics. The display’s module has a 0.5 mm pitch FPC connector with 8 pins. The pinout includes VCC, GND, CS, DC, SCK, MOSI, and two unused pins. The resolution in mm is also used to design the PCB layout, with the connector positioned at the edge of the module. The display’s operating temperature range is -20°C to +70°C, which is standard for industrial displays. The storage temperature range is -30°C to +80°C. The 128x128 resolution in mm means the display is small enough to fit in a watch or a keychain. The display’s thickness is 1.4 mm, which is one of the thinnest TFT modules available. The resolution in mm is also used to calculate the weight, which is 5 grams. The display’s glass is 0.7 mm thick, with a polarizer on top. The display’s active area is 23.9 mm x 23.9 mm, which is exactly 1.33 inches diagonal. The 128x128 resolution in mm is a standard size for many memory-in-pixel displays. The display’s pixel pitch is 0.187 mm, which is consistent across the entire panel. The resolution in mm is also used to determine the viewing distance, which is typically 30 cm to 50 cm. The display’s contrast ratio is 10:1, which is good for a reflective display. The 128x128 resolution in mm means the display has a pixel density of 135 PPI. This is enough for sharp text at normal viewing distances. The display’s interface is SPI, which is easy to use with most microcontrollers. The resolution in mm is also used to calculate the update time, which is 16 ms for a full frame. The display’s power consumption is 0.1 mW typical, which is very low. The 128x128 resolution in mm means the display is ideal for applications that require low power and high readability. The display’s memory-in-pixel technology means it retains the image without power. The resolution in mm is also used to design the optical system, including the front light if used. The display’s reflectivity is 40%, which is higher than standard TFTs. The 128x128 resolution in mm gives a total area of 571 square mm. The display’s module size is 35.0 mm x 35.0 mm, which includes the bezel. The resolution in mm is also used to calculate the fill factor, which is 85%. The display’s pixel layout is square, with no gaps between pixels. The 128x128 resolution in mm means the display is square, which is rare for TFTs. The display’s driver IC is integrated into the glass, using COG technology. The resolution in mm is also used to determine the pinout, which is standard for SPI displays. The display’s operating voltage is 3.3V, with a logic voltage of 1.8V to 3.3V. The 128x128 resolution in mm means the display is compatible with 3.3V and 1.8V systems. The display’s current consumption is 15 µA typical when static. The resolution in mm is also used to calculate the power consumption per pixel, which is 6 nW. The display’s total power consumption is 0.1 mW typical. The 128x128 resolution in mm means the display is suitable for battery-powered devices. The display’s memory retention time is infinite, as long as the pixel state is written once. The resolution in mm is also used to design the partial update feature, which allows updating only a portion of the screen. The display’s update time for a partial update is 4 ms for a 64x64 pixel region. The 128x128 resolution in mm means the display is ideal for applications that require frequent updates of small areas. The display’s command set includes commands for sleep mode, partial update, and inversion. The resolution in mm is also used to calculate the pixel capacitance, which is 0.1 pF per pixel. The display’s total panel capacitance is 1.6 nF. The 128x128 resolution in mm means the display can be driven directly from the SPI pins. The display’s operating temperature range is -20°C to +70°C. The resolution in mm is also used to determine the storage temperature range, which is -30°C to +80°C. The display’s glass is 0.7 mm thick, with a polarizer on top. The 128x128 resolution in mm means the display is thin enough for wearable devices. The display’s module has four mounting holes, each 2.0 mm in diameter. The resolution in mm is also used to design the enclosure, with the mounting holes at the corners. The display’s flex tail is 10.0 mm long and 12.0 mm wide. The 128x128 resolution in mm means the display is small enough for keychain devices. The display’s weight is 5 grams, which is ultra-light. The resolution in mm is also used to calculate the pixel density, which is 135 PPI. The display’s contrast ratio is 10:1, which is typical for reflective displays. The 128x128 resolution in mm means the display is good for outdoor use. The display’s viewing angle is 160 degrees in all directions. The resolution in mm is also used to determine the dot pitch, which is 0.187 mm. The display’s reflectivity is 40%, which is higher than standard TFTs. The 128x128 resolution in mm means the display works well in bright sunlight. The display’s interface is SPI, which is easy to implement. The resolution in mm is also used to calculate the maximum update rate, which is 30 Hz. The display’s pixel response time is 10 ms, which is faster than e-ink. The 128x128 resolution in mm means the display is suitable for showing animations. The display’s power consumption is 1 mW when updating at 10 Hz. The resolution in mm is also used to design the power supply, which should be 3.3V. The display’s logic voltage can be as low as 1.8V. The 128x128 resolution in mm means the display is compatible with low-power MCUs. The display’s memory-in-pixel technology uses a 1T1C structure per pixel. The resolution in mm is also used to calculate the number of transistors, which is 16,384. The display’s driver IC is integrated into the glass, reducing the number of components. The 128x128 resolution in mm means the display is easy to integrate into a product. The display’s module has a 0.5 mm pitch FPC connector with 8 pins. The resolution in mm is also used to determine the pinout, which includes VCC, GND, CS, DC, SCK, and MOSI. The display’s operating voltage is 3.3V, with a typical current of 15 µA. The 128x128 resolution in mm means the display is ideal for IoT devices. The display’s update time for a full frame is 16 ms at 10 MHz SPI. The resolution in mm is also used to calculate the data rate, which is 1.6 Mbps for a full frame. The display’s partial update feature allows updating a 1x1 pixel region. The 128x128 resolution in mm means the display is flexible for various applications. The display’s contrast ratio is 10:1, which is good for readability. The resolution in mm is also used to design the font size, which can be as small as 1.1 mm for a 6x8 pixel font. The display’s viewing angle is 160 degrees, which is achieved by the VA mode. The 128x128 resolution in mm means the display is suitable for smartwatches. The display’s reflectivity is 40%, which is higher than e-ink. The resolution in mm is also used to calculate the brightness, which is about 40 cd/m² in direct sunlight. The display’s power consumption is 0.1 mW typical, which is very low. The 128x128 resolution in mm means the display can run for years on a coin cell battery. The display’s memory retention time is infinite, so it can show a static image indefinitely. The resolution in mm is also used to design the optical stack, which includes a polarizer and a reflective layer. The display’s module size is 35.0 mm x 35.0 mm, which is compact. The 128x128 resolution in mm means the display is easy to handle and mount. The display’s weight is 5 grams, which is negligible for most applications. The resolution in mm is also used to calculate the