Touchscreen and LCD screen: dual-engine driving future experience for interactive display of smart devices

With the booming global smart device market, according to data from the authoritative market research organization Statista, global smartphone shipments will reach 1.26 billion units and tablet shipments will be about 160 million units in 2023. Smart devices have been deeply integrated into people's daily lives. Behind these devices, touch screens and LCD screens, as core components, are constantly reshaping human-computer interaction and visual experience with their exquisite collaborative operation.

The touch screen, scientifically known as the digital converter, is a transparent plastic layer with a thickness of only millimeters, which can be called the "nerve endings" of smart devices. Take a smartphone as an example. When a user touches an icon on the screen, the dense capacitive sensing lines in the touch screen will capture this subtle movement, convert the touch position, force and other information into electrical signals, and transmit them to the processing unit of the device at a speed of milliseconds. The technical director of a well-known mobile phone manufacturer revealed that the touch screen response speed of its latest flagship mobile phone has been increased to 8 milliseconds, which greatly reduces the touch delay and makes game control, handwriting input and other operations smoother and more accurate. It is this component that does not require disassembling the device and directly "talks" with the user's fingertips that has become the first key to open the door to the smart world.

The LCD screen hidden inside the device is the core of visual presentation. The full name of LCD screen is liquid crystal display. It precisely controls the amount of light passing through by deflecting liquid crystal molecules under the action of electric field, and combines the combination of red, green and blue primary color pixels to convert digital signals into colorful and lifelike images. From the delicate pictures of high-definition film and television dramas to the grand scenes of 3A games, LCD screens bring immersive visual enjoyment to users with their stable color performance and high contrast. According to a product manager of a display manufacturer, the color gamut coverage of mainstream LCD screens has reached 99% sRGB, which can truly restore the myriad colors of nature and meet the needs of multiple scenarios such as professional design, audio and video entertainment, etc.

In practical applications, the synergy between touch screens and LCD screens is brought into full play. Taking educational tablets as an example, students use the touch screen to mark key points and draw mind maps on electronic textbooks, while the LCD screen presents the operation results in real time and clearly. The two work well together to significantly improve learning efficiency. In the field of in-vehicle central control systems, the driver touches the screen to switch navigation routes and adjust multimedia volume, and the LCD screen simultaneously displays clear map guidance and operation feedback to ensure safe and convenient interaction during driving.

It is worth noting that in the face of the impact of new display technologies such as OLED and Micro-LED, the R&D teams of touch screens and LCD screens have not stopped. According to industry news, many scientific research institutions and enterprises are jointly tackling key problems, committed to improving the sensitivity and durability of touch screens, while optimizing the energy consumption and response speed of LCD screens. For example, nano-coating technology is used to enhance the scratch and wear resistance of touch screens, and quantum dot technology is used to improve the color saturation and brightness of LCD screens. In the future, this "golden partner" is expected to open up a broader application space in emerging fields such as smart wearable devices and smart home central control, and continue to bring users a more intelligent, convenient and immersive interaction and display experience.