At present, smart wearable device applications have appeared in many products, such as head-mounted and foot-worn. For example, Body-worn Camera has been widely used in the US police, and can immediately transmit important information to the headquarters. Cai Yongcheng, deputy general manager of Zhijing Optoelectronics, pointed out that Bluetooth headset is actually a smart wearable device. It has more than 120 million sales in a year. Other products, including smart ring, AR concept glasses and wrist sphygmomanometer, require a display. They have also penetrated into all levels of life of many people.
It is worth noting that the three products of smart watches, bracelets and sports watches add up, and the output has not lost to Bluetooth headsets. Cai Yongcheng said that because these smart wearable devices all require displays, the importance of display technology to smart wearable devices can be said to play a very important role.
Cai Yongcheng said that Smart Watch uses AMOLED and TFT-LCD as the main display technologies. The battery standby time is about 1-2 days. The time is not long. From 2014 to 2016, there are many products on the market, major manufacturers. They are all existing mobile phone manufacturers, and their use is also an extension of mobile phone functions. The value of display technology lies in external communication.
Take Samsung as an example. From 2013 to now, six kinds of watches have been published. The shape used to be square-shaped. Now it is more round, and the panel is enlarged to provide more information, but it can be done more. Thin and lighter. As for the two generations of Apple Watch, the appearance of the product has not changed much. The main changes are in terms of functions, such as built-in GPS and waterproof capability.
The main application of Sports Watch is based on navigation technology or health information, and the requirements for battery life are higher. Therefore, the display technology used is mainly memory-LCD. Cai Yongcheng pointed out that the reflective display technology has the characteristics of E-paper, and the standby time is relatively long. If the conventional LCD technology is adopted, the battery standby time will obviously become shorter.
For example, Garmin's product line ranges from low-end (wrister-based) to professional models for professional athletes. The product line is very neat, and the battery standby time can be up to 40 days (only display time), but if all functions are turned on, There may be only 10 hours left.
There are also many smart watches and bracelets that use E-paper technology. The main difference from the above-mentioned smart watches or bracelets is that they look no different from real watches. Cai Yongcheng pointed out that the thickness of the product using E-paper is also the thinnest, because the function does not put too much, so there is no need to put too many sensors.
For example, Pebble was established in 2012. Most of the smart watch display technologies use E-paper, which can last up to 10 days. SONY has also launched three products from 2014 to 2016. The feature is that the strap is also useful. E-paper technology, the standby time can even be up to 21 days.
The display technology of Wristband is mainly PMOLED. The Fitbit Alta, which was launched in March 2016, is 0.72 inches. The panel of the smaller bracelet 2 is slightly larger, but the panel consumes less power. The time can be as long as 5 to 7 days.
Xiaomi bracelet 2 uses 0.42 inch PMOLED, battery capacity is about 70 mAh, the main complaint is to use pedometer, warning and other functions, can stand for about 20 days; and Huawei's TalkBand has developed to the third generation, about 0.7 inch, do Bluetooth headset; long-term cultivation of professional sports-type Fitbit bracelet, has developed four products since 2014, the display size has gradually evolved from small size to large size, so put more functions, such as altimeter, heart rate detection Wait.
Cai Yongcheng pointed out that the smart bracelet will develop in two directions in the future. The model with display will provide more functions. As for the model that does not provide the monitor, the battery life is low and the battery life is low. For half a year, it will naturally be based on longer wear time, or through the exterior design towards the boutique direction.
Cai Yongcheng finally pointed out that smart watches or bracelets will begin to develop in a different way in the future. Different display technologies will become the key to differentiation. For example, OLED technology can be made thinner and lighter in color, color, and display. The effect is also better, and the appropriate display technology for the product characteristics can better meet the market demand.
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