Usually, we are only familiar with LCD screens and know what kind of physical product they are. butI don't know what a LCD module is.LCD module andLCM isReferring to the same product,LCM【Liquid Crystal Module】The abbreviation.It is a liquid crystal module, also known as a liquid crystal module.
The LCD display module is a combination of LCD display devices, connectors, integrated circuits, control and drive circuits, andPCBA complete display component that can be designed according to user needs by assembling circuit boards, backlight sources, and structural components together.Simply put, the LCD module isLCDscreenLEDbacklight panelPCBboard Iron frame.
1、 LCD module（LCM）Common terms used in the manufacturing process
TFT-----Thin Film TransistorThin film transistor
CF-------Color Filter: Color filter
LCD-----Liquid Crystal DisplayLCD display screen
TAB-----Tape Automatic Bonding: Load packagingIC
PCB-----Printed Circuit BoardPrinted Circuit Board
ACF-----Anisotropic ConductiveFilmAnisotropic conductive film
B/L------Back LightBacklight module
Assy---Assembly: Assembly
B/Z------Bazel: Iron frame
Bonding: Compression
TFT-LCDThe three stages of manufacturing: front, middle, and back
2、 LCD module（LCM）Main components and material applications
1.Polarizer:Mainly used as a grating,Only allowing light from a single direction to pass through,It can also protectCFlayer andTFTlayer
2.CFlayer andTFTlayer:One up and one down to form an electric field,Arrange liquid crystals under this electric field
3.Alignment(PI)membrane:Alignment film has directional properties that allow liquid crystals to be arranged in a regular pattern on the alignment film
4.Transparent metal conductive layer(ITO):Let the upper and lower glass be powered on,Used to control the direction of the LCD
5.Frame adhesive:Like the walls of a house,Used to block the contact between LCD and the outside world
6.Gap ball(SPACER):Like the pillars of a house,Used to support two upper and lower substrates
7.liquid crystal:Controlling the arrangement of liquid crystals under different electric fields,Used to obtain light with different penetration rates,Thus achieving the principle of display.
8.Backlight module:Only by providing a backlight source canLCDThe signal changes are presented
3、 LCD module（LCM）The three steps of the manufacturing process
The first step（JI）: WillLCDLCD finished panel（Cell）Non directional conductive adhesive（ACF）DriveICFlexible circuit board（FPC）AndPCBCircuit boards are pressed together using a machine
Step 2（MA）Next, assemble the finished product together with the backlight panel, light source, and iron frame;
Step Three（FI）Aging test
The above has undergone multiple tests and is what we have seenLCD panel（TFT-LCD）”That's it.
4、 LCD module（LCM）Manufacturing process diagram
This article provides a detailed introductionLCMThe concept is derived fromLCDscreenLEDbacklight panelPCBboard Composed of iron frame,LCD module（LCM）Common terms in manufacturing process, LCD module（LCM）Main components and material applications, LCD module（LCM）The three steps of the manufacturing process, LCD module（LCM）The manufacturing process diagram is very clear after reading, no more pitfalls.
Extended related reading
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