sharp memory lcd display quotation

Sharp’s Memory LCD is the perfect solution for compact handheld, wearable, and other small-screen applications. Embedded, 1-bit memory in every pixel allows for an always-on display capable of delivering high-contrast, high-resolution content with ultra-low power consumption. A lightweight, two-glass design plus an integrated driver in the panel provides an exceptionally thin module. Incorporating the Memory LCD into a design is simple with 3-wire SPI serial interface (SI, SCS, SCK).

Many projects benefit from a small display as a user interface. For very low power applications this is usually a no-go as the display needs too much energy. I have used e-paper displays from Kent: while these e-paper displays do not need any power to keep the image, changing the display content is not for free, plus is very slow (around 1 second needed to update the display). So I was looking for something low power and fast for a long time, until Christian (thanks!) pointed me to a display from Sharp: both very low power and fast:

And even better: Adafruit has a breakout board for that display available (https://www.adafruit.com/product/1393) :-). The display on the board is the Sharp LS013B4DN04 with 96×96 monochrome pixel resolution. The display is a cross between a e-paper and normal LCD. The ‘background’ color is a nice silver color. What looks cool with this display is that the pixels show up like little mirror:

The display has no backlight: readability is excellent (although somewhat view angle dependent) under daylight, under darker light conditions an extra illumination is needed. It has a very good contrast between the pixels:

The Adafruit breakout board comes with a level shifter so it can be used with 3.3V-5V. I’m using it with 3.3V, and only need 5 wires connected to the display:

One special thing with the Sharp Memory display is that it needs a special clock signal to generate the VCOM, an alternating signal that prevents a DC bias from being built up within the display panel. Depending on the display used, that signal or clock needs to supplied in the range of 0.5 to 60 Hz. That signal can be supplied either externally or by software, depending on the EXTMODE pin:

On the Adafruit breakout board, EXTMODE is pulled LOW: the clocking has to be provided by software. With software a special ‘VCOM’ command is sent to the display:

The ToggleVCOM() function only needs to be called if there are no other display commands sent, as the VCOM bit can be toggled while writing to the display.

Each line of the display can be updated with a command: sending line number, then the number of bytes (12 for the 96 bits) followed by a trailing 16 zero byte:

Of course I have created a new Processor Expert component for using that display. With it is only a matter of minutes to get the display up and running:

Making full updates of the display every 20 ms (50 images per second) requires 41 μA. Of course the less frequent image updates or the less lines update, the better.

That Sharp Memory Display is a really cool one. The Adafruit breakout board has its price ($39.95). It took me a while to get the protocol right, but now I have very low power display and driver in my inventory :-). There is an example project on GitHub, and the SharpMemDisplaycomponent is available on GitHub and will be part of the next McuOnEclipse component release. If you are interested in the sources only, they are available on the McuOnEclipseLibrary project.

sharp memory lcd and the younger it are. The fastest-growing process is becoming the fastest-growing process, allowing it to grow even faster in the future.

sharp memory lcd is one of the most widely used mobile phones. As it"s clear from the image, sharp memory lcd is easy to find and with new functions, it can be used for smart phones, and more. Tinted glass is a transparent, tinted glass- and, to prevent the damage from the degrading color the sharpness lcd is one of the widely used online cameras.

sharp memory lCD is available in a variety of colors, such as crystal, clear glass, and plastic. With all the colors of Alibaba.com, sharp memory lcd provide a easy-to- install option and have a different range of colors.

This creates a panel with lots of small light "dots" or lines, the diffuser film then..well.. diffuses this to create an even light source across the panel. There is also a mirror/reflective film on the back because the lightpipe will kick out light from both flat sides, so at the back it needs to be reflected back into it. As LCD"s (including TFT"s of course) use a polariser, 50% of the light is wasted when a pixel is transparent (usually "on" on TFT"s, as they are negative displays). Some companies like 3M have created a polarising diffuser - this allows one polarisation to pass through, diffused, whilst reflecting the other polarising back, recycling the light. It"s clever and can increase the brightness, or reduce the power consumption. I believe these diffusers are standard these days.

You could search for a PSP (play station portable) backlight replacement, as this is the whole assembly. Although I suspect this is slightly too large for that display. Rolling your own can be very tricky. Its easy to epoxy some LED"s into the edge of acrylic, but to get an "even" brightness across the panel requires very specific machining/moulding of the lightpipe. Should you wish to make your own, I highly recommend using a bright laptop screen for parts - it"ll come with all the films you need, plus a big, thin, lightpipe to cut to size. I"ve made illuminated posters this way for less than £10.

Since the pixels of a liquid crystal display (LCD) are relatively large, it is possible to integrate the memory in an active memory backplane of each pixel site; Sharp is already in Japan. A small monochrome LCD of 96 × 96 pixels achieved the above goal, and claimed that its power consumption is 130 times lower than the standard LCD panel of the same size.

By adding memory to each pixel, when the frame and interframe content are transformed, the data only needs to be transferred to the display; and most liquid crystal displays need to pass through a microcontroller at 50~60Hz. The content of the entire screen is rewritten between frames and even the picture may not change at all. That is, this kind of redundant data transmission consumes a lot of power.

Sharp said that its 1.35" memory LCD, which consumes only about 15 microwatts of power while operating, consumes about 2 milliwatts of power for standard LCDs. The memory LCD is based on Sharp"s patented Continuous Grain Silicon technology, so unlike other reflective displays, the new LCD does not require polarisers.

Because it uses a special liquid crystal material, the reflectivity is 50%, and the picture is generated by the black and white state transition of the pixel; in addition, Sharp said that because of the low power consumption, as long as there is a small solar cell, it is enough to provide the memory. The power required by the LCD. Such displays are suitable for portable applications such as medical devices or labels for watches, pulse meters, etc., samples of which are available starting in the second season.