ultra low power lcd display price

This is a thin, extremely low-power 128x64 graphic LCD display module. It has no backlight, so consumes no power illuminating the display. However, if you wanted to backlight the module, the rear polarizer is transflective, so you could add your own lighting solution there. This display is perfectly suited for hand-held or any application requiring low power consumption or a very thin display. A row of icons is shown automatically top of the display without having to be rendered. This display has an integrated controller and the tail is designed to mate with standard 18-conductor 0.5mm pitch ZIF connectors (typical would be Omron XF2L18351A/ DigiKey P/N OR754CT-ND).

Do you need a display that draws the lowest current possible? Want long lasting battery-powered LCD project? Well, you have come to the right place. We compiled this list of digital displays that consume the least amount of power. These displays are perfect for when you are trying to extend the battery life of your product by pulling the least amount of current possible.

Other than a pen and paper, ePaper provides the lowest power consumption available for electronic displays. It does this via an electrochemical process that requires zero power once the pixels are in their desired location. These displays are ideal for when the content is not updated very often. Low-power ePapers only use power during updates, so the longer time between updates, the lower the power consumed.

The beauty of OLED displays and power consumption is that OLEDs only draw current for pixels that are on. For instance, when displaying a black and white checkerboard pattern, an OLED display consumes 50% less current than when displaying a completely white screen. Keeping that in mind, user interfaces can be designed to conserve as much power as possible by limiting how many pixels are lit.

Ultra-low-power displays consume very little energy, and the two primary technologies used for these types of displays are bistable and low refresh rate displays. They are used when there is a need for a battery-powered device, want maximum life between charges, and the content being displayed does not change very frequently.

The common uses for ultra-low-power displays are e-readers and electronic price tags. Some of the other applications we have seen are secondary displays for handheld devices and battery-powered products like locks, remote-mounted homes, and industrial products.

Probably the most well know bi-stable low-power display is e-paper technology historically used on e-readers. This technology is available in both monochrome and color.

In a monochrome e-paper display, millions of tiny liquid-filled capsules contain black and white charged ink particles. These capsules are sandwiched between a grid of electrodes. Applying a charge to the electrodes causes the ink particles to migrate to the top of the capsule, and depending on the polarity of the charge, it changes the color of the surface of the display.

E-paper is a reflective technology and, with good ambient light, has an excellent contrast ratio. One of the characteristics of e-paper is that the background is white, whereas many reflective display technologies like LCD have a gray or greenish background. One disadvantage is that E-paper requires front lighting if used in low-light conditions.

Displaying static images on an e-paper display uses very little energy (uW). However, it can require more power (mW) to update the screen than other technologies like LCD in the same size and resolution.

The backlight uses most of the power in a standard TFT display. For example, on a 7” TFT panel, the backlight uses almost 80% of the energy consumed for an average brightness display. The digital circuitry utilizes the remaining power to sustain the picture.

The first step of building a low-power TFT is to move to a reflective or transflective display and eliminate the power consumption of the backlight when the display can use ambient light.

Choosing a Transflective display is a good trade-off since it comes with a backlight that, when turned, the display becomes reflective. However, there is some trade-off in that the reflectance of a transflective display is lower than a pure reflective display. We use an advanced LCD driver chip to reduce the power further to drive the display at different refresh rates.

We use an advanced LCD driver chip to reduce the power further, which allows the display to be driven at different refresh rates. The drivers have two modes; a standard TFT mode that enables the display to operate like a standard TFT being able to do video rate, 60Hz, updates, and a low-power mode where the display refreshes at a rate of 1Hz. This mode is excellent for holding static images and using very little energy. Figure 2.0 depicts the driving methodology. Using these drivers, you can reduce the power of the digital portion of the display by 60%.

Table 2.0 shows a comparison study that we did for a thermostat application to compare different low-power technologies. In this study, the display is active for 15 minutes, and then it shows static images for the remainder of the day.

Conclusion: Depending on your application, either low-power TFT or e-paper may be suitable. If power is critical for your application and requires maintaining an image on display for long periods, consider these great technologies.

US Micro Products has designed displays with both technologies for special low-power applications and can do the same for your product. So let us help you with your display requirements; we have expertise that spans multiple markets and technologies.

If you have a project that is considering taking advantage of any display technology, US Micro Products can provide a solution designed for your application. Send us an email at sales@usmicroproducts.com.

DISPLAY VISIONS" EA-DOGS102 series graphic LCDs are available in an FSTN positive transflective, STN negative transmissive, and FSTN positive reflective version. These displays have a 2.54 mm pitch and can be soldered directly or plugged into socket strips. Therefore, cumbersome gluing procedures, the need for designing a special mounting device, and error-prone cable connections that may lose contact are no longer a concern.

This LCD family was designed for use in the German industry and will have an availability of 15+ years. The extremely efficient ratio of external dimensions to the active display area helps in designing very compact devices. Furthermore, its low-power use [single supply 2.5 V to 3.3 V (typically 250 µA)] makes it ideal for handheld applications.

The EA 9780-4USB development board and free windows simulator are all users require to evaluate pin connected chip-on-glass LCDs with and without backlight. Simply plug the 2.54 mm connector pins of the display into the socket strips of the development board. Proprietary hardware or software development is not required. Decisions can be made quickly at a minimum expense.

I"m drooling over Sharp Memory LCD, but they are pricey. I mean $40 is not terrible for one, but I need to get a bunch for battery powered LCD boards I"m working on

From my breadboard tests ATmega328p board w/ Nokia 5110 is using 140-170uA (depending on number of characters on display) when chip is sleeping which is not bad at all, but I want to explore all alternatives...

Alas I don"t know of a display that matches your requirements (price/power) and apart from an e-ink or memory LCD that updates vary rarely I don"t think you will ever get one to run for a year on 2x AAA batteries.

The reflective version (without backlight) of the DOGS102 might meet your requirements. According to the datasheet, the current will be 250uA for LCD and LCD-Controller (if I interpret the datasheet correctly).

The reflective version (without backlight) of the DOGS102 might meet your requirements. According to the datasheet, the current will be 250uA for LCD and LCD-Controller (if I interpret the datasheet correctly).

Alas I don"t know of a display that matches your requirements (price/power) and apart from an e-ink or memory LCD that updates vary rarely I don"t think you will ever get one to run for a year on 2x AAA batteries.

Yeah you could be right. Besides display I forgot that I need to keep radio module awake, that eats a lot of power. But how they heck do they do this with commercial temperature/humidity devices? I have one that"s been running for 2 years on single AA battery

Yeah you could be right. Besides display I forgot that I need to keep radio module awake, that eats a lot of power. But how they heck do they do this with commercial temperature/humidity devices? I have one that"s been running for 2 years on single AA battery

My commercial module only last about 6 months on 2x AAA. It would probably last longer without the LCD to display temperature/humidity and flash an LED every time it transmits (every 30 seconds). Your doing very well with yours, must have one of them plutonium batteries.

Note that these do not use the highly multiplexed display system with the bias ladder of the graphical or 1602/ 2004 devices, they are generally one pin per segment so the electronics is far more efficient.

Darn. I"ve been searching and it seems everyone in Arduinoland uses OLEDs and TFTs. I want a 1" display that I can run off of a coin battery for a year. I know they exist, I own a bunch of them. But the best thing I"ve found draws 125uA.

That"s a 2.2" display. I"m looking for a 1" display, like many of the little OLEDs you can buy on eBay for $5 or less. But with 1/500th the power consumption. My $10 wristwatch has a display like that.

It appears that you simply haven"t weighed up the real issues. If you finally get a display with 1/500th the consumption of what ever, all you get is that but, if that is what you need, the real problem isn"t the display and never was. It"s the Arduino that drives it.

I"m not planning on using an Arduino. Why would you assume that? If the display drew 20uA instead of 10mA it would still be the major consumer of current.

Fair enough. What"s an Arduino? AVR (and non-AVR) chips are also discussed in this forum. But even an official Arduino board like the Pro Mini, with the regulator isolated, is capable of drawing a very low average current.

2. You’re right – the Sharp displays are expensive. Adafruit provides only the display for $45 (which I purchased and used for early prototyping). The NEWT includes the display plus:

That being said… $92 is a lot of money… so I’m all for people building their own – or better yet, building a better version. I’ll add a comment below with links to all the software (device and server side) and hardware designs.

A. I might use a NE555 to send a 1 HZ pulse to the display, and use a different RTC- as long as it was low cost, low power, and supported multiple alarms/timers. Or maybe I’d add a crystal to the ESP32 and use internal RTC (which is super inaccurate w/o an RTC).

C. I think I’d add a legit battery fuel monitor (I use a voltage monitoring chip right now, that goes HIGH when the batt voltage falls below 3.5V). There were few to no LiPO fuel gauge chips in stock when I launched NEWT

E-Paper, also known as electrophoretic display or e-ink, has proven to be one of the most unique display technologies to date. Each E-Paper display is filled with microscopic capsules with different charges to display a wide array of colors (also comes in monochrome). When electrical charges interact with these capsules, it is able to portray and change the display image. Typically images being displayed with E-Paper are stationary and not moving.

The electronic ink charges that portray the images on the displays, appear as if it’s physical paper. The brightness does not change nor fading in any light; even in direct sunlight words on e-paper are still fully readable. E-Paper is considered to be bistable, meaning it only has two states of power; active or inactive. Once an image is projected on E-Paper, it will cease to consume power on the device until you decide to change the image resulting in great battery life.