eDP and LVDS: Design Differences of Micro Coaxial Cable Parsing

With the continuous upgrade of display technology, the design of display interfaces and cables plays a crucial role in equipment performance and user experience. eDP (Embedded DisplayPort) and LVDS (Low-Voltage Differential Signaling) are common display transmission methods, each with its own characteristics in the application of extremely thin coaxial cables. Choosing the appropriate interface and cable design scheme directly affects the display quality, the slimming of the equipment, and the stability of signal transmission.

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One, comparison of characteristics between eDP and LVDS interfaces

eDP supports high-speed transmission up to several Gbps, suitable for high-resolution, high-refresh rate display devices, while LVDS has a relatively lower data rate, more suitable for medium and low-resolution systems. In terms of pin count, LVDS typically requires more signal lines, while eDP only needs a few pairs of differential lines to achieve multi-channel video and control signal transmission, thus simplifying cable design. Both in terms of power consumption and anti-interference performance, they both have advantages, but eDP performs better in high-performance applications. The high integration and multi-channel capabilities of eDP also conform to the trend of thin and light, high-quality displays, while LVDS remains stable in applications such as industrial, medical, and automotive displays.

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Section 2: Design Differences of Micro Coax Cables

In micro coaxial cable design, LVDS and eDP require the selection of cable materials and wiring methods based on interface characteristics. LVDS commonly uses micro coax with each signal line individually shielded to ensure impedance matching and anti-interference capability. eDP, due to fewer pairs of wires, has a more compact design and is suitable for thin and light devices. Differential impedance matching is the key to ensuring signal integrity, and both LVDS and eDP can use a pair of coaxial cables to form a differential pair to meet the 100 Ω differential impedance requirement. The small size and flexibility of micro coax make wiring both compact and reliable in limited spaces.

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Three, application scenario selection

eDP interface is suitable for notebook, tablet, VR/AR and other high-resolution, high refresh rate, thin and light design devices, and can meet future expansion needs. LVDS interface still has advantages in fields sensitive to reliability and cost such as industrial control, medical equipment, and vehicle displays. By reasonably selecting interfaces and micro coax cable design schemes, efficient, stable, and accurate display transmission can be achieved in different application scenarios.

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In display device design, interface selection and micro coaxial cable design are crucial. eDP provides advantages of high resolution, high refresh rate, and slimness, while LVDS is characterized by mature stability and controllable cost. Reasonably combining the interface characteristics with extremely fine coaxial cable design can ensure signal integrity, anti-interference capability, and the need for device slimness, thus optimizing the performance of display devices and user experience.

I am[Suzhou Huichengyuan Electronic Technology],Long-term focus on the customization of high-speed cable harnesses and ultra-fine coaxial cable harnesses, providing stable and reliable high-speed interconnection solutions for display equipment and various electronic products, welcome to contactManager Zhang: 18913228573 (same as WeChat)。