Integrated black display technology is a cutting-edge display solution, enhancing visual appeal and creating new experiences in functionality and design.

The core concept of Integrated black display technology is to deliver a seamless visual experience when the display is turned off, blending harmoniously into its surroundings to preserve a sleek and modern design at all times. Whether featured in automotive dashboards, smart home devices, or personal electronics, this technology elevates the user's visual experience while enhancing the perceived value of the product. In the following sections, we will discuss its key features, application areas, and the technical methods behind its implementation.

Technology and Methods

The method of realizing the integrated black display effect includes：

1. Optical bonding (OCA/OCR) :Optical Bonding is used to adhere the TFT-LCD and cover glass to reduce the reflection and refraction of light, improving the overall visual effect. This technology ensures a consistent black appearance at different viewing angles. This contributes to a sleek and modern aesthetic, elevating the overall design appeal.
2. Gray glass technology : Colorants are added during the manufacturing process of glass to change colorless transparent glass into dark gray glass, also known as gray glass. It adjusts reflectivity and transmittance to ensure a consistent appearance under varying light conditions.

Comparison of Air Bonding and Optical Bonding

1. Air Bonding : This is a traditional bonding method that uses adhesive tape to bond the cover glass to the TFT-LCD module along the edges of the TFT-LCD, leaving an air gap between the layers.
2. When light passes through the different materials, the air gap causes the refractive index to vary greatly. This causes reflections, glare and visual distortion. (Below left).
3. Optical Bonding : The process of bonding the cover glass directly to the TFT-LCD, using a transparent adhesive OCA or OCR to fill the air gap layer between the cover glass and the TFT-LCD. This significantly reduces the refractive index and reflective differences across the materials, enhancing the display's visual effect and durability.(Below right)

In this section, the visual effects of Air Bonding, Optical Bonding and grey glass will be discussed.

1. Transparent glass with Air Bonding
2. Transparent glass with Optical Bonding
3. 30% Transmittance Gray glass with Optical Bonding
4. 40% Transmittance Gray glass with Optical Bonding

A practical comparison of the visual effect when the display is "Turned Off"

1. Transparent glass with Air Bonding :
   There's an air layer between the TFT-LCD and the cover glass. This causes the refractive indices of the two materials to differ significantly. As a result, the visual effect of the display area is dark gray compared to the cover glass with black silkscreen on the outside edge. There is also a significant color difference between the display area and the cover glass with black silkscreen on the outside edge.
2. Transparent glass with Optical Bonding :
   Optical bonding is a process that connects the TFT-LCD and cover glass. This makes sure that the refractive index difference between the materials is small. Therefore, there's less color difference between the display area and the black silkscreen cover glass on the outside edge. The visual effect of black is enhanced with optical bonding compared to air bonding.
3. Gray glass with Optical Bonding :
   Use gray glass with transmittance 30% or 40%. The 40% option is best. This combination achieves the best overall visual effect and brightness for an integrated black display. However, using gray glass to achieve an Integrated Black display also sacrifices and reduces the brightness of the module.

Application

Integrated black display technology is often used for aesthetic purposes in high-end electronics, as follows

1. Automotive dashboards : It enhances the texture and aesthetics of the center information display (CID), making the overall display look more unified when not in operation.
2. Smart Home : Provides appliances such as refrigerators and washing machines with a clean and unobtrusive appearance when not in use, complementing modern interior designs.
3. Personal electronic products : Contribute to a sophisticated and cutting-edge look for products such as smartphones and tablets.

WINSTAR's integrated black display technology enhances the product's aesthetics and satisfies consumers' demand for high-quality visual effects. As Winstar's innovative technology continues to advance, it will bring you more innovative applications in the future.