Is a liquid crystal display devices, connectors, IC , PCB circuit board , backlight, knot
Member assembled components. English name called "LCD Module", referred to as "LCM", Chinese generally known as " LCD
The display module "In fact it is a commercially available components in accordance with the provisions of the relevant national standards : Only non- split
Integration of components before called " modules " can be split called " components ." So it is called specification should be called " LCD group
Pieces . " But because people have long been accustomed to call" modules . "

      Liquid crystal display device is a high-tech base components , although its application Pat is very broad, but for many people,
Use , still find it difficult to assembly. Especially the dot matrix liquid crystal display device , the user is unable to start feel . Special
Connections and the required special equipment is inhuman people understand and have , therefore liquid crystal display device users want someone on behalf of the
Lo , and control the liquid crystal display device , the driver IC mounted together to form a feature , the user can use the traditional
Process can be assembled into a whole system .

      Broadly speaking , all the liquid crystal display device and integrated circuit components are assembled together are " modules ", but real
On occasion we usually call "modules" mainly refers to the dot matrix liquid crystal display dot matrix LCD module assembly , especially because
As is the dot matrix liquid crystal display products except for some special large quantities of certain varieties ( such as machine translation , communication with ) , the manufacturer is
Supply of liquid crystal display devices directly to users , almost all general- matrix liquid crystal display devices are available for processing into modules before
To the user , so it is easy to form " LCD module " is the " dot matrix LCD module " misunderstanding.

First, Segment LCD Module

      It is assembled from a segment type liquid crystal display device integral with a dedicated integrated functional parts , can display numbers
And some identifying symbols. Segment type liquid crystal display devices are mostly used in the portable, pocket-sized device . Because of these devices are small,
So as not to display the portion designed as a separate part , even though some applications require a separate display unit , then
It should in addition to a display function , but also has some of the information received, processed, stored transmission function, because they
Have some generic, specific functions and welcomed by the market. Segment LCD driver chips commonly have HT1621 series,
PCF8566 Series , HD44100 (SPLC100 alternative ) series. There are some dedicated clock chip is used as stage
LCD driver , you can make the external circuit simplification , while significantly reducing the programming effort. PCF8566 chips due support
Held I2C bus control mode , used in the automotive electronics industry.

Second, the character dot matrix LCD module

      It is composed of dot matrix character LCD display and a dedicated row, column drivers, controllers, and the necessary connections, structures
Assembled , you can display numbers and Latin characters . This module itself has character dot matrix character generator , display capacity
Large , feature-rich. Usually this type of module can display at least more than 8 or 16 l Line 1 line character . This module
The matrix is arranged in a bundle of 5 × 7,5 × 8 pixels , or 5 × 11 matrix arrangement thereof. Each group is one , each room
There is little space between each row also has a line spacing , so you can not display graphics, its specifications are as follows: