LVDS to eDP Interface Conversion Circuit for UHD Displays
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Solution Overview
Problem
Conventional low voltage differential signaling (LVDS) interfaces face challenges in supporting high-resolution Ultra High Definition (UHD) display panels, requiring many channels and complex designs, and are not compatible with embedded DisplayPort (eDP) interfaces.
Innovation Solution
An interface conversion circuit that includes a LVDS interface and a data format conversion module to convert LVDS signals into digital video interface eDP signals, enabling UHD image display by integrating a switch module and controller for signal control and compatibility with eDP interfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional LVDS interface is applied to high resolution UHD display panels, then display resolution is improved, but interface complexity and channel quantity increase significantly
Solution Approach 1:
The patent introduces an interface conversion circuit as an intermediary component between the LVDS interface and the display panel. This converter transforms the LVDS signal into eDP signal format, allowing the display panel to receive high-resolution UHD signals through a simplified interface architecture. The conversion circuit acts as a mediator that bridges the gap between the existing LVDS interface and the eDP protocol requirements for UHD displays.
2Measurement precision
If conventional LVDS interface is applied to high resolution UHD display panels, then display resolution is improved, but the number of channels required increases
Solution Approach 1:
The patent changes the signal interface parameters by converting from LVDS differential signaling to eDP single-ended signaling. This parameter transformation allows the same display panel to achieve UHD resolution with fewer physical channels. The interface conversion circuit reconfigures the signal transmission mode, changing the electrical characteristics and protocol parameters to reduce the required channel count while maintaining high resolution capability.
3Reliability
If conventional LVDS interface is used, then existing LVDS systems can operate, but compatibility with eDP interface display panels is lost
Solution Approach 1:
The patent implements a universal interface conversion circuit that can handle both LVDS input signals and output eDP signals to the display panel. This multi-functional device maintains compatibility with existing LVDS systems while enabling support for eDP interface display panels. The converter provides universal adaptability, allowing the same hardware platform to work with different interface types and display panel configurations.
Data Source
AI summary
An interface conversion circuit, a display panel driving method and a display apparatus for realizing UHD image display at least by a LVDS interface together with an UHD display apparatus are provided. The interface conversion circuit comprises a low voltage differential signaling (LVDS) interface and a data format conversion module. The LVDS interface is configured to receive a LVDS signal from a LVDS signal source and transmit the LVDS signal to the data format conversion module. The data format conversion module is configured to convert the received LVDS signal into a digital video interface eDP signal.