High-resolution notebook liquid crystal display high-speed interconnect solution: ultra-fine coaxial cable bundle application

In high-resolution LCD screen laptops, signal transmission places extremely high requirements on the cable bundle. As the screen resolution increases to 2K, 4K, or even higher, the data transmission rate significantly increases, and any electromagnetic interference (EMI) can cause screen flickering, snowflakes, or color anomalies. Effectively suppressing EMI in limited space becomes crucial for ensuring image clarity and system stability. Micro coaxial cable (extremely thin coaxial cable) with its excellent anti-interference performance and high bandwidth transmission capability has become an ideal choice for high-speed signal transmission within laptops.

---

First, the reasons for EMI generation:

Liquid crystal display signals are usually transmitted through high-speed differential channels, and the extremely thin coaxial cable束 used between the motherboard and the screen is prone to be affected by factors such as cable coupling, bending, and impedance discontinuity in high-frequency and high-speed environments, as well as external electromagnetic fields. These factors work together to form EMI interference, which then affects the display quality. Understanding the sources of EMI is a prerequisite for scientifically designing cable structures and optimizing wiring layouts.

---

The advantages of ultra-fine coaxial beam

Micro coaxial cable has an independent shielding layer and precise impedance control, which can significantly reduce crosstalk and external interference. It is extremely thin in diameter, lightweight, and flexible, capable of adapting to the narrow space and frequent bending requirements of laptops. At the same time, it supports high bandwidth transmission, meeting the requirements of high refresh rates such as 120Hz or 144Hz. In addition, the thin coaxial cable bundle's lightweight characteristics match the design of modern laptops, balancing performance and slim, portable appearance, providing a stable and reliable signal transmission guarantee for high-resolution screens.

---

Three, Key means of EMI suppression

To improve the signal integrity of notebook LCD screens, optimization of the shielding layer, impedance control, reasonable wiring layout, and filtering grounding can be approached. Multi-layer or double braided shielding can enhance anti-interference ability; ensure impedance consistency during the production process to reduce signal reflection and distortion; reasonably plan the wiring path of the cable bundle to avoid parallel arrangement with high-power power lines; add filters at the interface and ensure low-impedance grounding to comprehensively reduce the impact of EMI on display quality.

---

In high-resolution notebook liquid crystal displays, ultra-fine coaxial cables not only provide a compact and high-flexible wiring solution, but also effectively suppress EMI interference through scientific shielding structures and precise impedance control, ensuring the integrity and stability of high-speed signal transmission. Selecting and designing micro coaxial cables reasonably is an important means to improve display quality and user experience.

I amSuzhou Huichengyuan Electronic Technology, Long-term focus on the design and customization of high-speed cable harnesses and extremely thin coaxial cables. For customization or technical consultation, please feel free to contactManager Zhang: 18913228573 (same number for WeChat)。