COG lcd module is newest LCD module.COG means Chip On glass.
There is a LCD drive chip on the glass,so the LCD can be connected to you MCU directly with SPI,I2C ect.. interface.

• How to make a LCD mold to get TN ,HTN,STN,FSTN,or VA LCD samples?

Firstly, please understand that there is no standard monochrome LCD display panel in monochrome LCD industry (not including color TFT LCD,COB moule and OLED) ,because specifications of LCD panel are quite different, especially size, voltage,viewing direction,graphics and so on.

In order to custom make LCD easy,please confirm these specifications below:

1. LCD size (mm):

Customers should tell us viewing area size or total LCD size in millimeter(length,width). We will help you design a final and economic LCD size.
LCD total thickness is 2.8mm or 2.0mm or 1.7mm. Usually,2.8mm is very common thickness.
 

1. LCD graphics(characters,icons)

Customers should send a simple LCD graphics(Formal CAD drawing or sketch) to us,then we will understand how many segment it is.Our engineer will make formal LCD drawing for your approval.
 

1. LCD type:

 1) TN   2)HTN  3)STN  4)FSTN   5)VA

How to choose LCD type?
  STN LCD not only can make segment LCD,but also can make dot matrix LCD.
Unit price of STN LCD is higher than HTN LCD.
  Price of VA is similar with FSTN LCD.
 

1. LCD operating voltage:

LCD operating voltage is up to LCD drive chip.
Usually,LCD operating voltage range is 2.8~5.0V.
We recommend to use 3.0V or 3.3V or 5V operating voltage.

5.LCD operating temperature and LCD storage temperature:
You can choose one from blow:
LCD operating temperature range:0 to 50ºC,then storage temperature range:-10 to 60ºC;
LCD operating temperature range:-10 to 60ºC,then storage temperature range:-20 to 70ºC;
LCD operating temperature range:-20 to 70ºC,then storage temperature range:-30 to 80ºC;
LCD operating temperature:-30 to 80ºC,then storage temperature range:-40 to 90ºC;
LCD operating temperature:-40 to 85ºC,then storage temperature range:-50 to 90ºC;
Temperature range is wider,then price is higher.

6.LCD Drive Method:
LCD drive method is up to LCD drive chip.
For examples,Static drive;1/2duty,1/2bias;1/3duty,1/2bias;1/4duty,1/3bias;1/8duty,1/4bias;
1/16duty,1/5bias and so on.

7.Rear polarizer type:
There are three types of polarizer: transmission polarizer;transflective polarizer and reflective polarizer.
If  No LED backlight,please choose reflective polarizer.
If  LED backlight is necessary,then you can choose transmission or transflective polarizer.

Transflective polarizer is better and expensive than transmission polarizer.But transflective LCD will have a uniform light result compared with transmission polarizer. What is more,when LED backlight is off, transflecitve LCD will also have a good display result.
For transmission polarizer,when it is negative LCD or LED backlight alway be on,then it is better  use transmission polarizer.

8.Viewing direction
As viewing angle of monochrome LCD is not very wide,especially TN LCD and HTN LCD, so it is necessary to confirm a best viewing direction,so that we can get a best display result.

As usual,LCD viewing direction is separated into 6:00 direction and 12: direction.
6:00 viewing direction: When our line of sight is from bottom to top of LCD,it is 6:00 viewing direction,such as telephone screen,wall clock screen,air condition screen and so on.

12:00 viewing direction: When our line of sight is from top to bottom of LCD,it is 12:00 viewing direction,such as electric cooker display screen.
Viewing direction of LCD is very important,if we made a wrong viewing direction,then the LCD display result was very bad. Maybe customers have to re-make a LCD mold....




9.Connection mode of LCD.
How to connect LCD on your PCB?There are four type of connectors for your choice.

1. Metal pin connector. It is very common connection way. Pins should insert into PCB holes and solder it. It is very strong and firm. LCD,LED backlight or PCB can be connected together as a LCD module.

 For the connection,If you must make sure that LCD and PCB can be compacted well, or else LCD can't be displayed or just display a part.
But zebra strip is cheap.



 

 
LED backlight is also our main product; LED backlight is a supporting product for liquid crystal display, which can be customized in size, structure, color and connection mode;
1. Color: white, blue, orange, red, RGB color, etc.;
2. Thickness: 2.2mm, 2.7mm, 3.2mm or other thicknesses customized;
3. Connection method: metal pin, wire, FPC, PCB pin;
4. Structure: straight slab structure, customized retaining wall, pillars, etc.


The following is the introduction of our main products