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    2021-10-21 17:40:05
    What are the Types of Phone Displays?


    Ⅰ Overview
    Ⅱ Phone display types
    Ⅲ Phone display innovation trend

    Ⅰ Overview

    The global mobile phone display market has grown and technological innovation has accelerated in recent years, as a result of the rapid promotion and popularization of smartphones, and the industry's scale has continued to develop. In terms of product composition, today's phone displays are mostly touch screens, consisting of a cover glass, touch modules, display modules, and other components. However, as the demand for light and small mobile phones grows, as does the demand for high-definition displays and the maturation of embedded touch technology, the mobile phone screen sector is transitioning from traditional single-component supply to integrated module manufacture. And there's no denying that vertical industrial chain integration is on the rise.

    Mobile phone color screens vary due to variances in LCD quality and R&D technologies. TFT, TFD, UFB, STN, and OLED phone screens are the most common. In general, the more colors displayed, the more complex images may be displayed, and the amount of richness of the image grows.

    smart phone display.jpg

    smartphone display

    Cover glass: The phone's display's outermost protective component is the cover glass. High investment thresholds and production technology requirements characterize the upstream glass substrate business.

    Touch module: A crucial connection in improving mobile phone human-computer interaction. TDDI (Touch with Display Driver Integration), which combines touch and panel driver ICs, is currently the most popular approach.

    Display module: LCD and OLED display modules are the two types of display modules available. Polarizer, color filter, liquid crystal, TFT (glass), backlight, and other components make up the LCD display module. The polarizer, Encap (glass), organic self-luminous layer, TFT (glass), and other components make up the OLED display module. It has self-luminescence, a straightforward production process, low energy consumption, ultra-thinness, and flexibility.

    Ⅱ Phone display types

    TFT material, SLCD material, AMOLED material, SuperAMOLED material, SuperAMOLEDPlus material, ASV technology material, IPS technology material, and NOVA technology material are the most common types of mobile phone display screen materials. Their differences may be seen in their respective traits, which are as follows:

    1. TFT phone display

    TFT displays are currently the most common type of display on mobile phones. The thin-film transistor (TFT) is a form of active-matrix liquid crystal display (AM-LCD). On the rear of the LCD, TFT has a unique light tube. It can actively manipulate each individual pixel on the screen, resulting in a significant reduction in response time.

    The liquid crystal configuration can be recalled because the TFT is an active matrix LCD. And once the current is gone, it will not return to its previous state. TFT additionally improves the STN flicker (water ripple)-blur phenomena, allowing for more dynamic picture playback.

    Each pixel in a TFT liquid crystal is equipped with a semiconductor switch. Dot pulses can control each pixel individually. As a result, each node is largely self-contained and may be regulated indefinitely. It not only enhances the display screen's response time but also allows for fine color gradation management. As a result, TFT liquid crystal color is more realistic. The TFT liquid crystal display is bright, layers well, and has vibrant colors.

    2. SLCD material phone display

    Splice Liquid Crystal Display (SLCD) is an abbreviation for a specific LCD screen used for splicing. It is a high-end LCD variant. The SLCD is a complete splicing display device that may be used as a monitor or spliced together to create a super-sized screen. Depending on the requirements, it may do single-screen split display, single-screen independent display, arbitrary combination display, full-screen splicing, vertical-screen presentation, image frame correction or covering, as well as real-time processing of full HD data.

    mobile phone display sizes.jpg

    mobile phone display sizes

    SLCD can be used for a variety of purposes and with a variety of signal inputs. It has a service life of over 50,000 hours and has never been burned or damaged. A complete picture can be displayed by combining any number of pieces. Any signal can be moved on the splicing screen wall with a screen as a unit using the software. Additionally, the screen's viewing angle is excellent.

    3. AMOLED material phone display

    It's a sort of OLED display. AMOLED (Active Matrix Organic Light Emitting Diode) is an organic light-emitting diode panel with an active matrix. AMOLED displays have a faster response time, greater contrast, and a wider viewing angle than standard liquid crystal displays. Fast response time, self-illumination, outstanding display effect, and low power consumption are all advantages of AMOLED screens.

    With the help of continued innovation, the early AMOLED panels' limited panel size and lower TFT life cycle have also narrowed the gap. The panel of an AMOLED is self-luminous. AMOLED displays provide richer, brighter effects, and we can see the screen easily outside during the day. The most crucial factor is that AMOLED consumes significantly less energy.

    4.SuperAMOLED material phone display

    SuperAMOLED stands for Super Active Matrix/Organic Light Emitting Diode. It abandons the prior touch sensing layer + display layer architecture design, as opposed to the typical AMOLED dazzling screen. The control has a higher sensitivity. Furthermore, the removal of the glass cover improves the display effects in direct sunlight.

    mDNIe (Mobile Digital Natural Image Engine) technology is also included in SuperAMOLED. It responds swiftly and can be viewed from any angle. The AMOLED screen, touch screen panel, and glass that protects the outside are the three layers of the structure. Because the Touch Sensor is on the AMOLED, Super AMOLED lacks the middle layer of the Touch Screen Panel.

    phone display.jpg

    phone display

    The SuperAMOLED panel is a native touch display that is thinner than the AMOLED panel. Because the SuperAMOLED display does not require a touch sensor or an air layer, it is more sensitive to touch. The color is brighter due to the lack of a barrier. In terms of viewing angle, display sharpness, and vibrant color saturation, SuperAMOLED excels.

    5. SuperAMOLEDPlus phone display 

    It's Samsung's most recent display. SuperAMOLEDPlus is presently only found on I9100 phones, but I expect it will become more common in the future. By adjusting the RGB primary color distribution in the pixel and extending the pixel range, the brand-new SuperAMOLEDPlus material screen effectively decreases the graininess of the material screen.

    Samsung presently exclusively employs the newest SuperAMOLEDPlus display on the Samsung I9100. More phones with such screens will arrive as time goes on.

    6. ASV technology material phone display

    Sharp's ASV (AdvancedSuper-V) technology improves the TFT display's response speed and viewing angle. ASV is a novel technique for aligning crystalline material between two thin glass sheets.

    There are various enhancements, the most noticeable of which is the viewing angle. Users can read the content clearly from an angle of 140 degrees vertically and 110 degrees horizontally on the present display, but ASV improves this angle to 170 degrees.

    Furthermore, most displays now have a default state in which all pixels remain white until they are changed to various colors when the display is turned on. It signifies that the damaged pixels are still black and hard to see. The response time of ASV has been reduced from 45 milliseconds to less than 25 milliseconds, which is the third improvement.

    7. IPS technology material phone display

    To enhance the viewing angle, the IPS panel employs the liquid crystal molecular plane switching technology. The screen has a stronger sensation of transparency and a more delicate hue because it is made without an additional compensation layer. However, the panel's short response time and difficulties in enhancing contrast are two main drawbacks that limit its popularity.

    The obvious benefit of the IPS screen is that it has a wider viewing angle, brighter and more vibrant colors, and the squeeze water ripple is less noticeable. Of course, the IPS screen's response time is slower, and its power consumption is higher.

    Furthermore, since LG acquired the technology, LG screens are now found in the majority of key consumer items including cell phones, monitors, and televisions. When it comes to IPS, the iPhone4 is a must-have. IPS hard screens are used in the iPhone4, which has a cult following and universal appeal.

    8. NOVA technology material phone screen

    NOVA is a brand-new sort of display technology on the market right now. The most significant advantage of NOVA over other panels is that it uses less electricity at the same brightness and performs exceptionally well in black color systems.

    The most notable aspect of NOVA is that it consumes very little energy at a brightness of 700 Nit. It also has the ability to give a crisp reading experience. The screen contrast has been substantially increased, and a real black and white display effect has been created. When compared to a typical LCD, the brightness is less than 280Nit, which saves up to 50% of the electricity. Under the pure white screen, it saves twice the power of AMOLED.

    Ⅲ Phone display innovation trend

    1. Embedded touch technology

    The development trend of full-fit touch and display integration is clear, with the continual improvement of customers' needs for the visual effects of mobile phone screens and the constant expansion of the product lines of touch and display firms. On/in-cell technology is also being accelerated by touch makers and other leading panel firms. In-cell laminating technique is one of them, and it's tough and expensive. In-cell technology will become widespread as traditional OGS, on-cell screen technology, and production efficiency reach a bottleneck. As expected, the market will continue to grow in the future. In 2016, nearly 50% of mobile phones worldwide used on/in-cell touch panels.

    2. OLED display technology

    After CRT (Cathode Ray Tube) and FPD (Field Programmable Display), OLED is the most promising new display technology (Flat Panel Display). It offers ultra-thinness, high brightness, a wide viewing angle, low power consumption, high definition, and flexibility, allowing it to efficiently fulfill new product demands. Wide viewing angles, thinner, lighter, softer, and high color saturation are among the new needs. Samsung, Gionee, ZTE, and other brand manufacturers have recently produced flagship models with AMOLED displays.

    3. 3D glass

    The curved design of 3D glass fits ergonomic requirements. It has a high heat dissipation capacity, good elasticity, and is not fragile. The use of 3D glass as the back panel of phones can efficiently overcome the problem of radio signals being shielded by standard metal phone casings. Wireless charging and high-bandwidth, high-speed next-generation mobile communication technology uses are also possible. In recent years, mobile phone manufacturers have paid close attention to it. Currently, 3D glass coverings may be found on a variety of high-end models. The 3D glass may usher in an era of rapid progress in the future.

    4. Application of sapphire material

    The sapphire material has a high dielectric constant and high hardness. It has a gorgeous appearance, good thermal conductivity, scratch resistance, sensitive fingerprint identification, and a glass cover built of it. At this time, firms have succeeded in mass-producing sapphire phone covers, which are widely utilized in electronic consumer areas such as smartphones and wearable gadgets. Sapphire displays have been used on some flagship models. Sapphire screens will become increasingly common in the future as the sapphire manufacturing process becomes more refined and production costs continue to plummet.

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