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Company News >> OLED, quantum dots are scared? New OLCD technology is coming 26th,Sep,2018
                                        What is the difference between OLED and OLCD?

The battle for a new generation of display technology has not stopped, OLED, QLED, ULED, MicroLED, and now an OLCD. One can't help but ask, this "OLCD" looks so "like" with OLED. What is the difference? Today, let's talk about the emerging display technology OLCD.

OLED, quantum dots are scared? New OLCD technology is coming

OLCD flexible screen developed by FlexEnable

In fact, this OLCD was originally applied to small-sized screens for in-vehicle systems. FlexEnable from Cambridge, UK is a leader in the development of industrial flexible displays and sensor organic electronics, and has been working on the development of flexible OLCDs. OLCD (Oraganic Liquid Crystal Display) organic liquid crystal display, thanks to its high performance and low cost production process, OLCD is the only display that can provide large size, low cost, high brightness and display for flexible displays. technology.

On the similarities and differences between two flexible display technologies

As the current mainstream flexible display technology, OLED has become the most likely display technology to replace the traditional TFT-LCD with its excellent display performance and characteristics. The technical principle of OLED, I believe many of my friends have already understood, I will not repeat them. Let's talk about the different development directions of OLED and OLCD technologies in flexible display.

As a self-luminous display, OLEDs do not have the same liquid crystal molecules as conventional TFT-LCDs. Therefore, substrates commonly used in flexible OLEDs can be better bonded to plastic substrates, including PET, PEN, etc., and metal foil substrates are also used. The other is also an ultra-thin glass substrate, so that the OLED display can realize flexible display functions such as bending.

OLED, quantum dots are scared? New OLCD technology is coming

However, the current dimensional stability has become the biggest challenge in the fabrication of flexible OLED screens for plastic substrates. Excessive dimensional changes make the mask alignment extremely difficult, which also limits the size of the transistor design, and at the same time easily creates internal stress between the interface of the organic and inorganic material layers, resulting in layer-to-layer peeling during bending, which makes The technical difficulty is higher when producing large-size flexible OLED panels, which is also a major reason for the high cost of large-size OLED panels. There are still some difficulties in using them in a wide range.

How does the LCD achieve flexible display?

So how does the LCD achieve flexible display? Actually, the research results published in the vine hanging stone pot laboratory of Tohoku University in Japan last year. OLCD is based on a flexible low-temperature organic thin-film transistor (OTFT) backplane technology that can be produced through current TFT-LCD production lines using low-cost plastic underlayers such as TAC and PET. Compared with amorphous silicon, the OTFT backplane has better electrical performance, which allows the plastic LCD to have the same display quality and reliability as the glass LCD, and has better ductility, while being slimmer, lighter, and more resistant. Broken, able to adapt to a variety of surfaces.

OLED, quantum dots are scared? New OLCD technology is coming

OLCD display principle

At present, FlexEnable's 4.7-inch OLCD screen can be 0.3mm thick, plus a backlight of 0.5mm, then the thickness of the flexible OLCD screen is 0.8mm and the radius of curvature is 10mm. The whole screen is hands-on, quite thin and light, almost comparable to OLED screens. Future screens can also be made more lightweight and larger.

It is expected that the flexible OLCD display will be put into production by the end of 2018, and before that, there will be small sample products for the industry to visit, and there will be batch products coming off the assembly line early next year.

Compared with LCD, one of the most obvious advantages of OLED is flexibility, but OLCD is shrinking the gap between flexible OLED and flexible display technology. The competition between technologies will inevitably push the product's update iteration and develop in a better direction. We are also willing to see that the future flexible display technology can bloom and shine.

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