Screen interface: LVDS vs EDP, how to choose?

In industrial display equipment and embedded systems, choosing the appropriate screen interface is crucial for ensuring device performance and stability. LVDS (Low Voltage Differential Signaling) and eDP (Embedded DisplayPort) are two common screen interface technologies, each with unique advantages and disadvantages, suitable for different application scenarios. This article compares these two interface technologies and, in conjunction with solutions from Hangzhou LEEHON Technology Co., Ltd., helps you make an informed choice.

I. Characteristics of the LVDS Interface

(I) Low Voltage Differential Signal Transmission
The LVDS interface uses a low voltage differential signal transmission mechanism, possessing strong anti-interference capabilities, making it suitable for use in industrial environments. Its differential signal structure effectively cancels noise, ensuring stable signal transmission.

(II) Cost Advantage
LVDS interface technology is mature, with simple hardware design and relatively low cost. For budget-sensitive industrial projects, LVDS is an economical choice.

(III) Wide Application Base
The LVDS interface is widely used in industrial control equipment, medical equipment, and automotive display systems, performing particularly well in scenarios requiring long-distance signal transmission.

II. Features of the eDP Interface

(I) High Bandwidth and High Resolution Support
The eDP interface supports higher bandwidth, easily handling the display requirements of high resolution (such as 4K or even 8K) and high refresh rates. Its single-channel rate can reach 8.1 Gbps (eDP 1.4 standard), far exceeding LVDS.

(II) Functional Integration and Simplified Design
The eDP interface not only supports video transmission but also audio, touch signals, etc., supporting multiple data streams (MST) and adaptive synchronization technology. Furthermore, eDP eliminates the need for an additional LVDS conversion chip, simplifying system design.

(III) Low Power Consumption and Environmental Friendliness
The eDP interface is designed with low power consumption in mind, especially in standby mode, where power consumption is almost zero. This is highly advantageous for energy-efficient devices such as laptops and embedded devices.

III. Comparison of LVDS and eDP

Features	LVDS	eDP
Bandwidth	Maximum 1.8 Gbps per channel	Maximum 8.1 Gbps per channel
Signal Type	Differential Signal	Differential Signal + Auxiliary Channel (AUX)
Feature Expansion	Video transmission only	Supports audio, touch signals, etc.
Topology	Point-to-point or multi-point	Point-to-point or daisy-chain (MST)
Cost	Lower	Higher (including licensing fees)
Application Scenarios	Industrial control, automotive displays	High-end laptops, tablets, high-resolution displays

IV. Advantages of Hangzhou LEEHON Technology Co., Ltd.

(I) Professional Supply and Customized Services
Hangzhou LEEHON Technology Co., Ltd. has established deep partnerships with several leading global LCD panel manufacturers (such as AUO and Tianma), enabling it to provide a variety of industrial-grade LCD screens, including those with LVDS and eDP interfaces. LEEHON Technology also offers customized solutions, providing personalized display devices based on specific customer needs (such as resolution, interface type, etc.).

(II) Technical Support and After-Sales Service
LEEHON Technology has a professional technical support team, providing customers with comprehensive services from product selection to after-sales maintenance. Whether using LVDS or eDP interface screens, LEEHON Technology ensures customers receive timely and effective technical support during use.

(III) Quality Assurance and Price Advantage
All LCD screens supplied by LEEHON Technology are original, brand new, and genuine, with reliable quality and stable performance. Through close cooperation with suppliers, LEEHON Technology has a significant price advantage, providing customers with cost-effective solutions.

V. Selection Recommendations

(I) Industrial Control and Automotive Displays
For most industrial control equipment and automotive display systems, the LVDS interface is a reliable and economical choice, especially suitable for low to medium resolution display needs. If the project budget is limited and resolution requirements are not high, LVDS is the preferred choice.

(II) High-End Equipment and High-Resolution Needs
For devices requiring high resolution (such as 4K and above), low power consumption, and multi-functional integration, the eDP interface is a better choice. For example, in scenarios such as high-end laptops, tablets, and medical imaging equipment, eDP can provide superior performance.

In summary, LVDS and eDP interfaces each have their advantages, and the choice should be made based on a comprehensive consideration of the specific application scenario, budget, and technical requirements. Hangzhou LEEHON Technology Co., Ltd., with its rich industry experience and high-quality service, can provide customers with the most suitable solutions.