What is LVDS signal output interface?
Date:2019-04-26
Most of them are used on display screens of more than 7 inches, and the interface is LVDS, which is the general interface standard of LCD panel,
LVDS (low voltage differential signaling) is a low voltage differential signal technology interface. It is a digital video signal transmission mode developed by NS Corporation (National Semiconductor Company of the United States) to overcome the disadvantages of high power consumption and EMI EMI interference when transmitting broadband high bit rate data by TTL level.
LVDS output interface uses very low voltage swing (about 350mV) to transmit data on two PCBs or a pair of balanced cables, that is, low voltage differential signal transmission. Using LVDS output interface, the signal can be transmitted at the rate of several hundred Mbit / s on the differential PCB line or balanced cable. Due to the low voltage and low current drive mode, low noise and low power consumption are realized. At present, LVDS output interface is widely used in 17 inch and above LCD.
LVDS output interface is also divided into the following four types:
(l) Single channel 6-bit LVDS output interface
In this interface circuit, single channel transmission mode is adopted, each primary color signal uses 6 bits of data, a total of 18 bits of RGB data, so it is also called 18 bit or 18 Bit LVDS interface. This is also called 18 bit or 18 Bit LVDS interface.
(2) Dual 6-bit LVDS output interface
In this kind of interface circuit, double channel transmission mode is adopted, and each primary color signal uses 6 bits of data. The odd channel data is 18 bits, and the even channel data is 18 bits, with a total of 36 bits of RGB data. Therefore, it is also called 36 bit or 36 bit LVDS interface.
(3) Single 8-bit 1tl output interface
In this interface circuit, single channel transmission mode is adopted, each primary color signal uses 8 bits of data, a total of 24 bits of RGB data, so it is also called 24 bit or 24 bit LVDS interface.
(4) Dual 8-bit 1tl output bit interface
In this interface circuit, dual channel transmission is adopted, and each primary color signal uses 8-bit data. The odd channel data is 24 bits, and the even channel data is 24 bits, with a total of 48 RGB data. Therefore, it is also called 48 bit or 48 bit LVDS interface
Hangzhou Xuhong Technology Co., Ltd. is a technology-based company of industrial color LCD module, industrial control display products and touch screen control. It is a professional supplier of industrial LCD drive solutions. It is an enterprise unit that carries out display and touch control of terminal equipment through LCD products and display drive solutions. Our long-term stable supply of 3.5 "- 32" industrial LCD screen, TFT LCD screen brand diversification, complete models, can meet different customers under different application environments, medical, vehicle special industry wide temperature, bright, wide angle Industrial LCD screen all stable supply.
