Micro LED has more advantages than OLED, or open the "smart display" era!

At present there may be no commercial Micro-LED panel in production, but the technology is on the rise, is likely to replace today's high-end smart mobile phone screen. In addition to the image quality at least the same with OLED, Micro-LED technology also indicates that the lower power consumption, higher peak brightness and even more pixel density panel.

However, in addition to image quality, Micro-LED also appeared some exciting new prospects.

The Micro-LED display is also likely to usher in the era of intelligent display. In other words, other electronic devices embedded in the display, but now the capacitive touch and image display function, can also perform other tasks.

Whether Micro-LED can be achieved?

One of the advantages of Micro-LED less is a very compact size. The size of 100 microns or less, these LED than the width of a hair is thin. When placed in the display panel in a matrix, the LED between the left sub pixels far more space than the conventional TFT, these spaces can be (thin film transistor) and other circuit bit stuffing. In addition, Micro-LED aperture is said to only 10%, this means that the light from the narrow and effective export directly from the display off. This means that placed beside the LED component will not affect its aperture or brightness.

Intelligent display is not a new idea. Including apple and SamSung company has been striving to fingerprint scanning function embedded in the current generation of OLED display screen. Due to technical difficulties, these functions have not yet entered the latest smart mobile phone, this is likely to limited spare space and production difficulties. To Micro-LED will provide more space for engineers.

Nevertheless, adaptation of these Micro-LED component type has some limitations. Medium or large IC or machining parts must be too big to fit. Remember, this is a few micrometres in high resolution panel. On the contrary, the complementary circuit will be limited to small individual components, such as transistors, resistors and other diode. These circuits can still form complex and useful, but still have to deal with the other main processing in other places.

The disadvantage is the electronic components etched into LED chips or other custom chips for TFT binding will be very difficult and expensive, the potential application is quite limited. If many different companies want different things, the economy may not be feasible. Embedded fingerprint scanning may ultimately be a universal intelligent mobile phone function, but for facial scanning or temperature sensing applications is not necessarily.

On the contrary, micro-LED chip manufacturers will display intelligent components and LED surface mount chip components integrated together may be more meaningful. Do not have circuit etched into various display layer, intelligent display module can be like a conventional integrated circuit with custom TFT installation.

This can make intelligent technology in any part of the screen, while the slightly more modular panel production. At present, the production of micro-LED display is not feasible, because the manufacturing machine has not achieved the ability of 100 m LED for accurate placement.

Photograph: Android authority

Intelligent display can do what?

As mentioned earlier, the screen fingerprint scanning is likely to be smart people see the first display technology. Rumors of apple and Samsung are conducting tests. In fact, many apple related patents and its 2014 acquisition of LuxVue for scanning, aims to use embedded in a display and infrared detector to fingerprint scanning. Of course, these extra spare space can be placed in the diode between micro-LED pixels in. Face ID includes Apple's new iPhone X also has the infrared scanning technology.

The optical detector embedded screen can also introduce new controls and gestures, without requiring the user to touch the screen. Based on this, other ideas include embedded temperature or pollution sensor. Although such as heart rate monitor ideas may be more significant, but when the user touches the display, may send readings. The ambient light sensor to the mobile phone screen can also be a collective decision, so that manufacturers can minimize the border.

Micro-LED technology is still in its early stages, so these advanced intelligent display cases may be more distant. However, micro-LED production progress will eventually enable engineers to incorporate new sensor and intelligent technology to the smart mobile phone, smart watches and other display. This will bring some interesting new cases for our consumers. (compiled: LED James)

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