OLED Displays

Unisystem offers monochromatic OLED displays supplied by Winstar. The extensive range includes modules of various sizes and proportions. In addition to standard formats, square and round models are also available.

The primary criterion for classifying OLED displays is how content is presented on the screen. Two main groups are distinguished:

Graphic OLED displays, capable of presenting any content, including graphics. Their size is determined by specifying the resolution (number of pixels vertically and horizontally).
Character OLED displays, capable of presenting individual characters such as letters or numbers. Their size is determined by specifying the number of characters and rows. For example, in an eight-character, two-row solution, a total of 16 characters can be displayed.

Monochromatic OLED displays are used not only in consumer devices but also in industrial applications due to their excellent readability, energy efficiency, wide operating temperature ranges, reliability, and durability. Additionally, they are thin and lightweight, making them suitable for portable devices such as measuring equipment.
For applications requiring touch functionality, an OLED display can be combined with a touch panel and decorative/protective glass. Furthermore, some standard models are also available with built-in touch functionality.

Unisystem » Products » OLED Displays

Unisystem offers monochromatic OLED displays supplied by Winstar. The extensive range includes modules of various sizes and proportions. In addition to standard formats, square and round models are also available.

The primary criterion for classifying OLED displays is how content is presented on the screen. Two main groups are distinguished:

Graphic OLED displays, capable of presenting any content, including graphics. Their size is determined by specifying the resolution (number of pixels vertically and horizontally).
Character OLED displays, capable of presenting individual characters such as letters or numbers. Their size is determined by specifying the number of characters and rows. For example, in an eight-character, two-row solution, a total of 16 characters can be displayed.

Monochromatic OLED displays are used not only in consumer devices but also in industrial applications due to their excellent readability, energy efficiency, wide operating temperature ranges, reliability, and durability. Additionally, they are thin and lightweight, making them suitable for portable devices such as measuring equipment.
For applications requiring touch functionality, an OLED display can be combined with a touch panel and decorative/protective glass. Furthermore, some standard models are also available with built-in touch functionality.

  • Enhance your display solutions with the WEA012864MXPP3N00000 Winstar OLED graphic display module. This compact 0.96-inch screen offers a crisp 128×64 resolution, providing vivid blue, dual color, and yellow content options. Designed with the efficient Chip on Glass (COG) technology, it integrates seamlessly with your projects via the I²C interface. The SSD1306 controller ensures reliable performance at both 3V and 5V power levels. With a robust operating temperature range from -40°C to 80°C, the WEA012864MXPP3N00000 is built to withstand extreme conditions, making it ideal for diverse applications. Its compact outline dimensions of 27.3×27.3×1.41 mm allow for easy integration into space-constrained environments. Elevate your projects with the reliability and precision of Winstar’s cutting-edge OLED technology.

    Size (inch)

    0.96

    Resolution

    128x64

    Content Color

    Blue, Dual Color, Yellow

    Module type

    COG - Chip on Glass

    Interface

    I²C

    Controller

    SSD1306

    Voltage

    3V, 5V

    Touch Panel

    None

    Outline Dimensions (mm)

    27.3x27.3x1.41

    Operating temp. (°C)

    -40~80

    Storage temp. (°C)

    -40~85

    Manufacturer

    Winstar

  • Experience unmatched clarity with the WEA016080AWPP3N00000 – Winstar OLED graphic display module, designed for superior performance in diverse environments. With a compact 1.54-inch size and a high-resolution 160×80 display, this module delivers crisp, white content that's perfect for intricate graphic displays. The innovative COG (Chip on Glass) module type ensures seamless integration, while the SPI interface and SSD1320 controller provide efficient communication and control. Operating reliably across a wide temperature range from -40°C to 80°C, and with a robust design fit for storage from -40°C to 85°C, this display module is the ideal choice for both industrial and consumer applications. Powered at just 3V, it offers energy-efficient brilliance without compromise. Choose the WEA016080AWPP3N00000 for a display solution that combines cutting-edge technology with durability, ensuring your visual content stands out in any setting.

    Size (inch)

    1.54

    Resolution

    160x80

    Content Color

    White

    Module type

    COG - Chip on Glass

    Interface

    SPI

    Controller

    SSD1320

    Voltage

    3V

    Touch Panel

    None

    Outline Dimensions (mm)

    43.5x22.5x5.96

    Operating temp. (°C)

    -40~80

    Storage temp. (°C)

    -40~85

    Manufacturer

    Winstar

  • Experience unparalleled clarity with the WEP012832NWPP3D00000 – Winstar OLED graphic display module. This cutting-edge 2.23-inch display offers a crisp 128×32 resolution and vibrant white content, perfect for a wide range of applications. Engineered with a COG (Chip on Glass) module type, it supports multiple interfaces including 6800, 8080, I²C, and SPI, ensuring seamless integration into your projects. Powered by the reliable SH1106 controller and operating at 3V, the WEP012832NWPP3D00000 guarantees efficient performance even in extreme temperatures from -40°C to 80°C. With capacitive touch capabilities, this module enhances user interaction, while its compact outline dimensions of 66.5 x 35.0 x 9 mm make it a versatile choice for space-constrained designs. Trust Winstar's expertise in OLED technology to elevate your display needs to new heights.

    Size (inch)

    2.23

    Resolution

    128x32

    Content Color

    White

    Module type

    COG - Chip on Glass

    Interface

    6800, 8080, I²C, SPI

    Controller

    SH1106

    Voltage

    3V

    Touch Panel

    Capacitive

    Outline Dimensions (mm)

    66.5x35.0x9

    Operating temp. (°C)

    -40~80

    Storage temp. (°C)

    -40~85

    Manufacturer

    Winstar

  • The WEA012840AWAP3N00000 Winstar OLED graphic display module offers superior performance with its compact 1.3-inch size and high-resolution 128 x 40 display, ideal for intricate graphic presentations. Designed with Chip on Glass (COG) technology, it ensures durability and reliability. The SPI interface allows seamless integration, powered efficiently at 3.3 V. With a wide operating temperature range of -40°C to 80°C, this module is perfect for diverse environments. Its sleek dimensions of 37.74 x 19.0 x 5.71 mm make it a versatile choice for space-constrained applications. Despite being a regular item, the WEA012840AWAP3N00000 stands out with its clear white content color, driven by the robust SH1106 G-0 E controller. Choose the WEA012840AWAP3N00000 for a display solution that combines cutting-edge technology with practical functionality, enhancing your electronic projects with its crisp, reliable graphics.

    Size (inch)

    1.3

    Resolution

    128x40

    Content Color

    White

    Module type

    COG - Chip on Glass

    Interface

    SPI

    Controller

    SH1106G-0E

    Voltage

    3.3V

    Touch Panel

    None

    Outline Dimensions (mm)

    37.74x19.0x5.71

    Operating temp. (°C)

    -40~80

    Storage temp. (°C)

    -40~85

    Manufacturer

    Winstar

  • Experience superior display performance with the WEA012832KWPP3N00000 – Winstar OLED graphic display module, perfect for your cutting-edge projects. This compact 2-inch screen offers a crisp 128×32 resolution in striking white, ensuring clear visibility even in challenging environments. Designed with a Chip on Glass (COG) module type and powered by the reliable SSD1315 controller, it ensures seamless integration with your system using the SPI interface. Its robust design is capable of operating under extreme temperatures ranging from -40°C to 80°C, making it ideal for diverse applications. With a slim outline of 59.0 x 18.86 x 5.96 mm, it fits effortlessly into tight spaces, enhancing your product's versatility. Trust in the quality and innovation of Winstar with the WEA012832KWPP3N00000, engineered to deliver outstanding performance and durability. Elevate your display solutions today with this exceptional graphic OLED module.

    Size (inch)

    2

    Resolution

    128x32

    Content Color

    White

    Module type

    COG - Chip on Glass

    Interface

    SPI

    Controller

    SSD1315

    Voltage

    3V

    Touch Panel

    None

    Outline Dimensions (mm)

    59.0x18.86x5.96

    Operating temp. (°C)

    -40~80

    Storage temp. (°C)

    -40~85

    Manufacturer

    Winstar

  • Experience superior display performance with the WEA012832FSPP3N00000 – Winstar OLED graphic display module. This compact 0.91-inch display offers a crisp 128×32 resolution in stunning sky blue, perfect for a variety of applications. The COG design ensures a slim profile, while the SSD1306 controller and I²C interface guarantee seamless integration with your projects. With dual voltage options of 3V and 5V, the WEA012832FSPP3N00000 adapts to your power requirements. Its robust operating temperature range of -40°C to 80°C, and storage capacity from -40°C to 85°C, ensures reliability in diverse environments. Trust in Winstar's expertise for high-quality OLED displays that deliver clarity and precision. Ideal for developers and engineers seeking a compact, efficient solution without compromising on performance.

    Size (inch)

    0.91

    Resolution

    128x32

    Content Color

    Sky Blue

    Module type

    COG - Chip on Glass

    Interface

    I²C

    Controller

    SSD1306

    Voltage

    3V, 5V

    Touch Panel

    None

    Outline Dimensions (mm)

    35.8x12.0x2.41

    Operating temp. (°C)

    -40~80

    Storage temp. (°C)

    -40~85

    Manufacturer

    Winstar

  • Discover unparalleled display quality with the WEA012832ELAP3N00000 – Winstar OLED graphic display module, designed for high-performance applications. This compact 1.04-inch display boasts a crisp 128×32 resolution, delivering vibrant yellow graphics that stand out with exceptional clarity. Featuring advanced COG (Chip on Glass) technology, the WEA012832ELAP3N00000 ensures seamless integration with your projects. Its SPI interface and SSD1306 controller guarantee efficient operation, while operating in extreme temperatures from -40°C to 80°C. With dimensions of just 35.4×23.5×1.8 mm, this module is perfect for space-constrained designs. Trust Winstar for reliable performance and innovation in OLED displays. Upgrade your devices with this versatile and efficient display solution, crafted to meet the demands of modern technology.

    Size (inch)

    1.04

    Resolution

    128x32

    Content Color

    Yellow

    Module type

    COG - Chip on Glass

    Interface

    SPI

    Controller

    SSD1306

    Voltage

    3V

    Touch Panel

    None

    Outline Dimensions (mm)

    35.4x23.5x1.8

    Operating temp. (°C)

    -40~80

    Storage temp. (°C)

    -40~85

    Manufacturer

    Winstar

  • Elevate your display solutions with the WEA064128BWAP3N00000 – Winstar OLED graphic display module, a cutting-edge choice for professionals seeking unparalleled performance. This 1.3-inch COG module boasts a sharp 64 x 128 resolution, delivering crisp white content that stands out in any application. Engineered for reliability, its robust design operates seamlessly across extreme temperatures (-40°C to 80°C), making it ideal for diverse environments. The efficient SPI interface, powered by the SH1107 controller, ensures smooth integration and operation at a stable 3.3V. With compact dimensions of 17.1 x 35.80 x 5.36mm, the WEA064128BWAP3N00000 is perfect for space-constrained projects. Trust Winstar's commitment to quality and innovation in OLED technology to enhance your product's visual impact.

    Size (inch)

    1.3

    Resolution

    64x128

    Content Color

    White

    Module type

    COG - Chip on Glass

    Interface

    SPI

    Controller

    SH1107

    Voltage

    3.3V

    Touch Panel

    None

    Outline Dimensions (mm)

    17.1x35.80x5.36

    Operating temp. (°C)

    -40~80

    Storage temp. (°C)

    -40~85

    Manufacturer

    Winstar

  • Discover the WEO128128GLAP3N00000, a cutting-edge 1.12-inch OLED graphic display module by Winstar, engineered for excellence. With a crisp 128×128 resolution and vibrant yellow content color, this COG (Chip on Glass) module offers superior visual performance. Featuring versatile interface options including 4-wire, 6800, 8080, I²C, and SPI, it ensures seamless integration into various applications. Powered by the SH1107 controller and operating at a reliable 3V, the WEO128128GLAP3N00000 delivers outstanding efficiency and functionality. Its robust design withstands extreme temperatures ranging from -40°C to 80°C, making it ideal for diverse environments. Compact with dimensions of 25.9 x 30.1 x 1.26 mm, this module is perfect for space-constrained projects. Elevate your display solutions with the WEO128128GLAP3N00000, where innovation meets reliability.

    Size (inch)

    1.12

    Resolution

    128x128

    Content Color

    Yellow

    Module type

    COG - Chip on Glass

    Interface

    4-wire, 6800, 8080, I²C, SPI

    Controller

    SH1107

    Voltage

    3V

    Touch Panel

    None

    Outline Dimensions (mm)

    25.9x30.1x1.26

    Operating temp. (°C)

    -40~80

    Storage temp. (°C)

    -40~85

    Manufacturer

    Winstar

  • Introducing the WEA128128GLAP3N00000 – a compact yet powerful OLED graphic display module by Winstar. With a convenient 1.12-inch size and sharp 128×128 resolution, this display delivers vibrant yellow content perfect for any project. Featuring advanced COG technology, the WEA128128GLAP3N00000 integrates seamlessly with your systems using I²C and SPI interfaces, powered by the reliable SH1107 controller. Operating on a low 3V, this module is energy-efficient, withstanding extreme temperatures from -40°C to 80°C. Its robust design ensures durability with storage capabilities from -40°C to 85°C. Ideal for applications where space is limited, its compact dimensions of 26.4mm x 38.6mm x 5.21mm make it a versatile choice. Enhance your next project with this high-quality graphic OLED display module, blending performance with precision. Choose reliability and innovation with Winstar's exceptional display solutions.

    Size (inch)

    1.12

    Resolution

    128x128

    Content Color

    Yellow

    Module type

    COG - Chip on Glass

    Interface

    I²C, SPI

    Controller

    SH1107

    Voltage

    3V

    Touch Panel

    None

    Outline Dimensions (mm)

    26.4x38.6x5.21

    Operating temp. (°C)

    -40~80

    Storage temp. (°C)

    -40~85

    Manufacturer

    Winstar

  • Experience vibrant clarity with the WEO012840AWAP3N00000 Winstar OLED graphic display module, designed for precision and versatility. At 1.3 inches with a resolution of 128 x 40, this COG (Chip on Glass) display offers crisp white content, ideal for diverse applications. Its dual interface options, I²C and SPI, provide seamless integration into your projects, driven by the reliable SH1106 G-0 E controller. Operating efficiently at 3.3 V, the module withstands extreme temperatures from -40°C to 80°C, ensuring performance in challenging environments. With compact dimensions of 36.74 x 14.00 x 1.26 mm, the WEO012840AWAP3N00000 is perfect for space-constrained designs. Trust in Winstar's quality and innovation to elevate your display solutions with this robust, high-resolution OLED module.

    Size (inch)

    1.3

    Resolution

    128x40

    Content Color

    White

    Module type

    COG - Chip on Glass

    Interface

    I²C, SPI

    Controller

    SH1106G-0E

    Voltage

    3.3V

    Touch Panel

    None

    Outline Dimensions (mm)

    36.74x14.00x1.26

    Operating temp. (°C)

    -40~80

    Storage temp. (°C)

    -40~85

    Manufacturer

    Winstar

  • Experience unparalleled clarity and performance with the WEO064128BWAP3N00000 – Winstar OLED graphic display module. This compact 1.3-inch display, boasting a crisp 64×128 resolution and vibrant white content color, is perfect for diverse applications demanding precision and reliability. The Chip on Glass (COG) technology ensures a sleek, efficient design, while the SH1107 controller guarantees seamless operation. With versatile I²C and SPI interfaces, integration into your projects is effortless. Designed to withstand extreme conditions, it operates smoothly between -40°C and 80°C, making it ideal for challenging environments. The WEO064128BWAP3N00000 is engineered for excellence, promising durability and superior visual performance, backed by Winstar's commitment to quality. Elevate your display technology with this exceptional module today.

    Size (inch)

    1.3

    Resolution

    64x128

    Content Color

    White

    Module type

    COG - Chip on Glass

    Interface

    I²C, SPI

    Controller

    SH1107

    Voltage

    3V

    Touch Panel

    None

    Outline Dimensions (mm)

    17.1x35.80x1.41

    Operating temp. (°C)

    -40~80

    Storage temp. (°C)

    -40~85

    Manufacturer

    Winstar

  • Elevate your display technology with the WEN025664DWAP3N00000 – Winstar OLED graphic display module. This 5.5-inch module offers a crisp 256×64 resolution with vibrant white content color, ensuring clear visibility in diverse lighting conditions. Its COF (Chip on Film) module type, paired with a capacitive touch panel, delivers seamless interaction and superior durability. The versatile interface options, including 6800, 8080, and SPI, provide easy integration into various systems, while the SSD1322 controller ensures smooth performance. Designed to operate efficiently in temperatures ranging from -20°C to 70°C, and store from -30°C to 80°C, this module is perfect for demanding environments. With a slim outline of 147.0x59x2.5 mm and operating at a low voltage of 3V, it is ideal for compact and power-sensitive applications. Trust Winstar's quality and innovation with the WEN025664DWAP3N00000 for a reliable and high-performance display solution.

    Size (inch)

    5.5

    Resolution

    256x64

    Content Color

    White

    Module type

    COF - Chip on Film

    Interface

    6800, 8080, SPI

    Controller

    SSD1322

    Voltage

    3V

    Touch Panel

    Capacitive

    Outline Dimensions (mm)

    147.0x59x2.5

    Operating temp. (°C)

    -20~70

    Storage temp. (°C)

    -30~80

    Manufacturer

    Winstar

  • Elevate your project with the WEN025664DWAP3N00000 – Winstar OLED graphic display module, designed for precision and clarity. Featuring a generous 5.5-inch screen and a sharp 256×64 resolution, this module delivers crisp white content that stands out. Its COF (Chip on Film) technology ensures compact and efficient performance, while the versatile interfaces (6800, 8080, SPI) offer seamless integration with various systems. Powered by the reliable SSD1322 controller and operating at a low 3V, it’s engineered for optimal energy efficiency. With robust operating temperatures ranging from -20°C to 70°C, and storage capability from -30°C to 80°C, the WEN025664DWAP3N00000 is built to withstand diverse environments. Perfect for anyone seeking a high-quality, durable graphic OLED solution, this display module is a testament to Winstar's commitment to excellence.

    Size (inch)

    5.5

    Resolution

    256x64

    Content Color

    White

    Module type

    COF - Chip on Film

    Interface

    6800, 8080, SPI

    Controller

    SSD1322

    Voltage

    3V

    Touch Panel

    None

    Outline Dimensions (mm)

    147.0x59x2.5

    Operating temp. (°C)

    -20~70

    Storage temp. (°C)

    -30~80

    Manufacturer

    Winstar

  • The WEO064128B is a sophisticated Graphic OLED display from Winstar, designed to elevate your electronic projects with superior visual performance. This display features a 64×128 resolution, delivering crisp and clear graphics to meet the demands of high-quality applications. Its OLED technology ensures vibrant colors and exceptional contrast, providing an unmatched viewing experience even in low-light conditions. The compact design offers versatility, making it ideal for a wide range of industrial, medical, and consumer electronics. With low power consumption and a wide operating temperature range, the WEO064128B is engineered for efficiency and reliability. Enhance your devices with this cutting-edge OLED display, backed by Winstar’s commitment to innovation and quality.

    Resolution

    64x128

    Content Color

    White

    Interface

    I²C, SPI

    Controller

    SH1107

    Voltage

    3V

    Active area (mm)

    14.06x29.42

    Outline Dimensions (mm)

    17.1x35.80

    Operating temp. (°C)

    -40~80

    Storage temp. (°C)

    -40~85

    Size (inch)

    1.3

  • The WEO012840A is a sophisticated graphic OLED display from Winstar, designed to deliver exceptional clarity and performance for various applications. Featuring a 128×40 pixel resolution, this high-contrast display ensures crisp visuals and excellent readability, even in low-light conditions. Its compact size makes it ideal for embedded systems, handheld devices, and industrial equipment, offering flexibility in design integration. The OLED technology provides a wide viewing angle and fast response time, enhancing user interaction. With low power consumption and a robust operating temperature range, the WEO012840A is a reliable choice for demanding environments. Ensure your projects stand out with this cutting-edge display solution from Winstar.

    Resolution

    128x40

    Content Color

    White

    Interface

    I²C, SPI

    Controller

    SH1106G-0E

    Voltage

    3.3V

    Active area (mm)

    31.852x8.66

    Outline Dimensions (mm)

    36.74x14.00

    Operating temp. (°C)

    -40~80

    Storage temp. (°C)

    -40~85

    Size (inch)

    1.3

  • Introducing the WEA064128B Graphic OLED Display from Winstar, a cutting-edge visual solution crafted for superior performance and clarity. Featuring a 64×128 pixel resolution, this display delivers crisp, vibrant graphics with exceptional color accuracy and contrast. Ideal for both industrial and consumer applications, it offers a sleek design and compact form factor, ensuring seamless integration into any project. With a wide viewing angle and fast response time, this OLED display enhances user interaction, providing a rich, immersive visual experience. Built to last, it boasts low power consumption and high durability, perfect for demanding environments. Elevate your display technology with the WEA064128B and enjoy unparalleled quality and efficiency.

    Resolution

    64x128

    Content Color

    White

    Interface

    SPI

    Controller

    SH1107

    Voltage

    3V

    Active area (mm)

    14.06x29.42

    Outline Dimensions (mm)

    17.1x35.80

    Operating temp. (°C)

    -40~80

    Storage temp. (°C)

    -40~85

    Size (inch)

    1.3

  • The WEA016080A is a high-performance graphic OLED display from Winstar, designed to deliver unparalleled clarity and efficiency. Featuring a compact and versatile design, this display offers a resolution of 160×80 pixels, ensuring crisp and vibrant visuals for a variety of applications. Its low power consumption and wide operating temperature range make it ideal for industrial devices, consumer electronics, and portable instruments. The WEA016080A boasts a fast response time and wide viewing angle, providing consistent image quality from any perspective. Compatible with multiple interface options, it integrates seamlessly into your existing systems. Elevate your product’s display capabilities with Winstar’s cutting-edge OLED technology.

    Resolution

    160x80

    Content Color

    White

    Interface

    SPI

    Controller

    SSD1320

    Voltage

    3V

    Active area (mm)

    35.02x17.50

    Outline Dimensions (mm)

    43.5x22.5

    Operating temp. (°C)

    -40~80

    Storage temp. (°C)

    -40~85

    Size (inch)

    1.54

  • Introducing the WEA012840A, a sophisticated Graphic OLED display from Winstar, designed to elevate your electronic projects with superior visual performance. Featuring a high-contrast 128×40 pixel resolution, this display ensures crisp and clear graphics for your applications. Its OLED technology provides vibrant colors and wide viewing angles, making it ideal for both indoor and outdoor use. With a compact design, the WEA012840A seamlessly integrates into various devices, offering reliability and energy efficiency. Whether for consumer electronics, industrial equipment, or innovative prototypes, this display guarantees exceptional quality and longevity. Choose the WEA012840A for cutting-edge displays that transform your technological visions into reality.

    Resolution

    128x40

    Content Color

    White

    Interface

    SPI

    Controller

    SH1106G-0E

    Voltage

    3.3V

    Active area (mm)

    31.852x8.66

    Outline Dimensions (mm)

    37.74x19.0

    Operating temp. (°C)

    -40~80

    Storage temp. (°C)

    -40~85

    Size (inch)

    1.3

  • Introducing the WEA012832K Graphic OLED Display from Winstar, a cutting-edge solution for your display needs. This state-of-the-art module features a 128×32 pixel resolution, offering crisp and clear visuals that enhance user interaction. With its high contrast ratio and wide viewing angles, this OLED display ensures excellent readability in various lighting conditions. The compact design, measuring just 30mm x 11.5mm, makes it ideal for integration into compact devices. Engineered for efficiency, it consumes less power, prolonging device battery life. Whether for industrial equipment, consumer electronics, or wearable technology, the WEA012832K delivers superior performance and reliability. Elevate your product experience with this advanced display solution from Winstar.

    Resolution

    128x32

    Content Color

    White, Yellow

    Interface

    SPI

    Controller

    SSD1315

    Voltage

    3V

    Active area (mm)

    50.535x10.695

    Outline Dimensions (mm)

    59x18.86

    Operating temp. (°C)

    -40~80

    Storage temp. (°C)

    -40~85

    Size (inch)

    2

    Manufacturer

    Winstar

How to Find the Right OLED Display in Our Offer?

When choosing an OLED display, it is important to pay attention to several parameters such as color of content, module type, voltage, and operating temperature.
Below, we describe selected parameters of OLED displays.

OLED Display Colors

Monochromatic OLED displays dominate Unisystem’s offer, featuring diodes in a single color, such as white, yellow, red, green, or blue (which defines the color of the displayed content). Monochromatic OLED displays can also combine different colors, resulting in a matrix composed of diodes in, for example, yellow and blue colors, allowing the creation of vertical or horizontal stripes in yellow and blue.
In consumer applications, color OLED displays are commonly used. These displays use pixels composed of three sub-pixels—red, green, and blue (RGB model)—which, when combined, create different shades of colors. Such matrices are referred to as RGB OLED displays. Another variant is RGBW OLED (also known as White OLED). In RGBW OLED displays, each pixel consists of four sub-pixels—one for each primary color and an additional white sub-pixel. This modification significantly improves color reproduction quality.

Types of OLED Display Modules

OLED displays can be classified into three structural variants:

  • COG (Chip-on-Glass) – with OLED diodes placed on the display glass. The COG variant is used when a smaller number of OLED diodes is needed but with higher image quality and smaller module size.
  • COB (Chip-on-Board) – with OLED diodes placed on a PCB. The COB variant is used when a large number of OLED diodes are needed, or in applications where low production costs are a key requirement.
  • COF (Chip-on-Film) – with OLED diodes placed on a flexible film. The COF variant provides better image quality and advanced features, which are particularly important in industrial applications.

Interfaces Used in OLED Displays

One of the factors in choosing the right OLED display is the interface, which determines how it communicates with the controlling device. Popular interfaces used in OLED displays include 6800 and 8080, CAN, I2C, and SPI.
The 6800 interface is one of the oldest types and uses eight wires to transmit control signals and data. The 8080 interface is an advanced version of the 6800 interface and utilizes 16 wires, allowing for faster and more advanced communication.

The CAN interface is a multi-master solution without a central unit. In this network, all devices monitor the network continuously and wait for an opportunity to transmit their own message. Data reaches all devices in the network while maintaining a specific order defined by unique identifiers assigned to each message (determining its priority).

The I2C interface is a serial solution in which communication occurs bidirectionally. It is a multi-master bus, and information is transmitted in the form of one-byte packets. Each transmission has a designated start (START signal/bit) and end (STOP signal/bit). Between them, the master device sends a 7-bit address and then the read/write bits and relevant data to the target device.

The SPI interface is a serial solution in which communication occurs bidirectionally. It is based on the “master/slave” model, although it is not a multi-master bus. Typically, only one master device is used, connected to several slave devices. Four lines are used for transmitting information.

Learn more about the interfaces used for data transmission from our guides – part 1 and part 2.

Voltage in OLED Displays

The operating voltage in monochrome OLED displays is commonly defined at 3V, 3.3V, or 5V. In applications utilizing OLED solutions, it is important for the supply voltage to be precisely matched to the end device. Any changes in the voltage path require the use of additional electronic components, resulting in design modifications and affecting the final production cost of the device.

Operating Temperature of OLED Displays

Among the available display technologies on the market, OLED displays stand out for their wide operating temperature range (for almost all models, the operating temperature range is specified from -40 to 80°C). This allows them to be used in extremely low and high temperatures without the need for additional elements like fans or heaters.

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