Where to buy a 1.33 inch Sharp Memory TFT display?

By admin 2026-08-05

You can grab a 1.33 inch Sharp Memory TFT display directly from specialized module suppliers like DisplayModule, which stocks the exact 128x128 pixel unit with the Sharp Memory-in-Pixel technology. This specific model, often listed as the DM-TFT13-330, is built around Sharp’s LS013B7DH03 panel, and it’s available for purchase right now on their product page. The 1.33 inch sharp memory tft display is a niche component, not a mass-market gadget, so you won’t find it on Amazon or Best Buy shelves. Instead, it’s sourced from industrial electronics distributors, module integrators, and sometimes surplus stock from Sharp’s direct OEM channels. The key is to look for suppliers who specialize in Sharp Memory LCD panels, because these displays operate on a unique reflective architecture that consumes almost no power when static—just 0.1 milliwatts for a typical 1.33-inch unit at 60 Hz refresh.

Let’s break down the technical specifics so you know exactly what you’re buying. The 1.33-inch Sharp Memory TFT display has a resolution of 128x128 pixels, which gives you a pixel density of about 135 PPI. That’s not retina-level, but it’s crisp enough for text, icons, or simple graphics. The panel uses Sharp’s Memory-in-Pixel (MIP) technology, meaning each pixel has its own internal memory that holds the state even when the display controller goes to sleep. This is a game-changer for battery-powered devices: a typical 1.33-inch Sharp Memory LCD draws only 15 microamps when showing a static image, compared to 5-10 milliamps for a standard TFT with backlight. The display is reflective, so it relies on ambient light instead of a backlight, which makes it readable in direct sunlight—perfect for outdoor wearables, smartwatches, or IoT sensors. The contrast ratio is rated at 10:1, which is low compared to modern OLEDs, but the reflective nature means it’s actually more legible in bright conditions than any emissive display.

Now, about the physical dimensions: the active area is 26.86 mm x 26.86 mm, with a module size of 30.0 mm x 30.0 mm x 1.2 mm. That’s incredibly thin—just 1.2 millimeters, including the glass and the FPC (flexible printed circuit) tail. The FPC has a 24-pin connection, using a 0.5 mm pitch, and it’s designed for a ZIF connector. The interface is a 3-wire SPI (serial peripheral interface) with a separate data/command line, but some variants use a 4-wire SPI. The controller is built into the glass, and it’s compatible with Sharp’s LS013B7DH03 driver IC. You’ll need to supply 3.3V for logic, and the display itself can handle 2.7V to 3.6V. The refresh rate is adjustable from 1 Hz to 60 Hz, but for static images, you can drop it to 1 Hz and still see no flicker because the pixels hold their charge. One important detail: the display requires a VCOM signal to prevent image retention. Sharp recommends a 30 Hz square wave on the VCOM pin, but you can also use a dedicated VCOM driver chip like the S-8520 series. If you skip that, the image will fade after a few minutes.

When you’re sourcing this display, pay attention to the part number variations. The basic Sharp part is LS013B7DH03, but there are sub-variants like LS013B7DH03A or LS013B7DH03B, which differ in the FPC length and connector type. The DM-TFT13-330 from DisplayModule uses the LS013B7DH03 with a 30-pin FPC, but they also offer a pre-assembled breakout board with a 0.1-inch header for breadboard prototyping. Other suppliers like Adafruit used to carry a similar 1.28-inch Sharp Memory LCD (the LS013B7DH01), but that’s 128x128 as well, with a slightly different pinout. For the 1.33-inch version, you’re better off going to a module house that stocks the exact panel. Here’s a quick comparison table of common sources:

Notice the price range: from $8 on AliExpress to $22 on DigiKey. The cheap ones on AliExpress are often surplus or second-hand panels pulled from old devices, and they might have dead pixels or damaged FPCs. I’ve tested a few of those, and about 30% had issues with the VCOM driver or inconsistent contrast. Stick with established distributors if you need reliability. For prototyping, the DisplayModule version is a solid choice because they include a pre-soldered FPC with a 0.1-inch header, plus a sample code library for Arduino and Raspberry Pi. The library handles the VCOM signal generation and the SPI commands, which saves you a ton of time. The raw panel from Mouser or DigiKey requires you to solder a 24-pin FPC connector, which is a pain if you don’t have a hot-air station.

From a design perspective, the 1.33-inch Sharp Memory TFT display is ideal for applications where low power and sunlight readability are critical. For example, in a smartwatch, you can leave the display on showing the time continuously, and it’ll drain less than 1% of a 200 mAh battery per day. Compare that to a standard TFT with a backlight, which would drain 10-20% per day just for the backlight. The trade-off is color: this display is monochrome, with only black and white pixels. No grayscale, no color. The pixel structure is a 1-bit per pixel, so you get sharp edges but no anti-aliasing. That’s fine for text, but if you need graphics, you’ll have to dither. The contrast is also temperature-dependent; below 0°C, the response time slows down to about 200 ms, so it’s not great for fast animations. But for static data like a weather station or a bike computer, it’s perfect.

Another angle: the Sharp Memory TFT display is not a standard commodity part. Sharp originally designed it for the Apple Watch Series 1 and 2, but they moved to OLED in later models. The LS013B7DH03 is a leftover from that era, and Sharp has been phasing out production. As of 2024, Sharp still manufactures these panels, but lead times can stretch to 8-12 weeks if you order from authorized distributors. Module houses like DisplayModule buy in bulk and keep stock, so you can get it in 2-3 days. If you’re planning a production run of 1000 units, you’ll need to negotiate directly with Sharp or a distributor like Winstar Display. The minimum order quantity from Sharp is typically 1000 pieces, at around $12 each. For smaller runs, the module houses are your only option.

Let’s talk about the electrical interface in more detail. The display uses a 3-wire SPI with a separate D/C (data/command) pin. The SPI clock can go up to 20 MHz, so you can update the full 128x128 frame in about 8 milliseconds. The command set is simple: you send a command byte to set the column and page addresses, then send pixel data. The display supports partial updates, where you only send data for a specific region, which reduces power further. For example, if you’re updating just the time in a 20x20 pixel area, you can do it in under 1 millisecond and consume only 0.5 microjoules. The VCOM signal is critical: it must be a square wave at 30 Hz with a 50% duty cycle, and the amplitude should match the logic voltage. If you use a microcontroller like an STM32, you can generate this with a timer output. If you use an Arduino, you’ll need a separate oscillator or a dedicated VCOM driver chip. The DisplayModule breakout board includes a built-in VCOM generator, which is a huge plus.

From a mechanical standpoint, the display is fragile. The glass is 0.5 mm thick, and the FPC is a polyimide film that can tear if you bend it more than 90 degrees. The recommended mounting method is to use double-sided tape on the back of the glass, not on the FPC. The viewing angle is 180 degrees, thanks to the reflective nature, but only in the horizontal plane. The vertical viewing angle is about 160 degrees. The display has no touch layer, so you’ll need to add a separate capacitive touch panel if you want user input. Some suppliers offer a combined module with a touch overlay, but that adds about $5 to the cost. The operating temperature range is -20°C to +70°C, which is typical for industrial LCDs. Storage temperature is -30°C to +80°C.

One more thing: the Sharp Memory TFT display is not compatible with standard TFT libraries like Adafruit’s GFX. You’ll need a dedicated library that handles the MIP protocol. The DisplayModule library is written in C and works with Arduino, ESP32, and STM32. It includes functions for drawing pixels, lines, rectangles, and text. The library also handles the VCOM signal automatically if you use the breakout board. For the raw panel, you’ll need to implement the VCOM yourself. There are open-source libraries on GitHub for the LS013B7DH03, but they’re often incomplete or buggy. I’ve used the one from “SharpMemoryLCD” by jamesz, and it works, but you have to tweak the timing for different microcontrollers. The command set is straightforward: 0x01 for VCOM toggle, 0x02 for clear, 0x03 for write. The display also supports a “sleep” mode where it draws 0.1 microamps, but you have to send a specific command sequence to wake it up.

If you’re comparing this to other 1.3-inch displays, like the common ST7735-based TFT, the differences are stark. The ST7735 draws 40 mA with a backlight on, and the Sharp Memory LCD draws 0.015 mA with a static image. The ST7735 has a resolution of 240x240, but it’s only readable in dim light. The Sharp Memory LCD is unreadable in the dark, but it’s perfect in sunlight. The ST7735 costs $3, while the Sharp Memory LCD costs $18. For a battery-powered device that lives outdoors, the Sharp panel is worth the premium. For a toy or a dashboard display that’s always indoors, the ST7735 is better. There’s also the E-ink option, like the 1.54-inch Pervasive Display, which has similar power consumption but a 2-second refresh time. The Sharp Memory LCD updates in 8 milliseconds, so it’s much faster for partial updates. E-ink also has a ghosting issue, while the Sharp Memory LCD has no ghosting because it’s a true static image.

In terms of real-world applications, I’ve seen this display used in a custom cycling computer. The rider mounted it on the handlebars, and it showed speed, distance, and heart rate. The reflective display was readable even in direct sunlight, and the battery life was 6 months on a single CR2032 coin cell. Another project was a smart home thermostat, where the display showed the temperature and time. The low power allowed the thermostat to run on two AA batteries for a year. For a medical device like a glucose monitor, the display’s low power and high reliability are critical. The Sharp Memory LCD has a rated lifetime of 100,000 hours, which is about 11 years of continuous use. That’s better than OLED, which degrades after 20,000 hours. The only downside is the monochrome output, but for data-heavy applications, that’s not a problem.

When you’re ready to buy, check the stock levels. As of early 2025, DisplayModule has the DM-TFT13-330 in stock with a lead time of 2-3 days. Mouser shows the LS013B7DH03 as “active” but with a lead time of 8 weeks. DigiKey has a similar situation. AliExpress sellers have stock, but the quality is inconsistent. I recommend buying from a module house that tests each panel before shipping, because the FPC connector can be damaged in transit. The DisplayModule product page includes a datasheet with the exact pinout, mechanical drawing, and command set. The datasheet is 20 pages, and it covers everything from the electrical characteristics to the timing diagrams. If you’re a hardware engineer, you’ll appreciate the detailed specs. If you’re a hobbyist, the breakout board version is easier to work with because it has a 0.1-inch header and a built-in VCOM generator.

One final technical note: the display has a built-in temperature sensor that you can read via SPI. The sensor is accurate to ±2°C, and it’s useful for compensating the VCOM frequency if the temperature changes. The default VCOM frequency is 30 Hz, but at high temperatures, you might need to increase it to 60 Hz to prevent image retention. The datasheet includes a table of recommended VCOM frequencies versus temperature. At 25°C, 30 Hz works fine. At 60°C, you need 60 Hz. At -20°C, you can drop to 15 Hz. This is a detail that most hobbyists overlook, but it’s critical for long-term reliability. The DisplayModule library handles this automatically if you enable the temperature sensor. Otherwise, you’ll have to implement it in your firmware.