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Tutorial: Dr Pan Teaches Momochrome COB LCD Module

Dr Pan: Welcome to DISPLAY Museum. I am Dr Pan, the curator of Museum.

Greg: Hello, Dr Pan. I am Greg. I came here to learn about COB LCD Module. 

Dr Pan:  Hello, Greg. COB is the abbreviation for chip on board. It is a technology, which IC is  bonded directly onto PCB. COB technology is usually used in LCD module with sophisticated and complex functions.  

There is a misunderstanding about COB LCD module. Since it is very stable, people would use this structure no matter what.  But COG LCD module is very stable, too. It can totally replace simple COB LCD module with only display function and much cheaper for large quantity.

For the sophisticated LCD module with complex functions, COB technology may be the cheapest solution since it integrates all the components on one board and it can reduce the number of IC and board.  But every coin has two sides. Even though it is very stable and there is a very small chance that it will malfunction, it will be irreplaceable if it does. There is why we recommend hybrid structure which integrate COB technology and COG technology together. It has all the merits of both technologies.

Greg: Thank you, Dr Pan. Now I got it.

Dr Pan:  Welcome to contact us if you have any questions.

Custom COB LCD Module Products

There are more than 100 new prototypes being developed every month and only a few selected typical feature products are displayed. 

Display Type: VA / Segment

Display Size: Customized

Display Mode: Negative

Display effect: Black Background and White Letters 

Structure: COB LCD Module

Application: Medical Equipment

Display Type: STN / Segment

Display Size: Customized

Display Mode: Negative

Display effect: Blue Background and White Letters with Green Silk Printing

Structure: COB LCD Module with Touch Button

Application: Cash Counting machine

Display Type: STN / Segment

Display Size: Customized

Display Mode: Negative

Display effect: Blue Background and White Letters

Structure: COB LCD Module

Application: Fueling Equipment

Display Type:  FSTN / Dot-matrix

Display Size: Customized

Display Mode: Negative

Display effect: Blue Background and White Letters

Structure: COB LCD Module

20*2 Character LCD Module

Display Type: FSTN / Dot-matrix

Display Size: Customized

Display Mode: Negative

Display effect: Blue Background and White Letters 

Structure: COB LCD Module

128*32 Graphic LCD Module

Display Type: STN / Segment

Display Size: Customized

Display Mode: Positive

Display effect:  Grey Background and Blue Letters 

Structure: COB LCD Module with Touch Button

Application: Water Equipment

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Standard COB LCD Module Products

Customize Your Monochrome LCD Module From a Chinese Manufacturer

DISPLAYBLY is among the top monochrome LCD module manufacturers in China. We have been supplying both small and large companies with eco-friendly and ISO-certified monochrome LCD modules in different structures, including COB structure,  COG structure, and hybrid structure, standard dot-matrix LCD modules， including graphic LCD module and character LCD module， at wholesale for 2 decades. 

COB LCD Module

One low cost, stable, usually used in LCD module with sophisticated and complex functions. Simple monochrome COB LCD module could be replaced by monochrome COG LCD module .

COG LCD Module

One low cost, steady and compact size monochrome COG LCD Module, simple structure and easy for mass production.

Quote for Custom LCD Module

Fill in the online form. We will contact you within 1 working day, please pay attention to the email with the suffix “@displaybly.com”.

Graphic LCD Module

One low cost, standard dot matrix LCD module, with no tooling fee, format of graphic resolution including 122x32, 128x64, 128x128, 144x32, 160x160, 192x64, 192x128, 240x128, 320x240 and etc

20 by 2 Character STN Positive Display Yellow Background Black Letters COB LCD Module

Character LCD Module

One low cost, standard dot matrix LCD module, with no tooling fee, available from 8x2, 12x2, 16x1, 16x2, 16x4, 20x2, 20x4, through to 40x4 formats with 5x8 dot matrix characters.

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Monochrome COB LCD Module Solutions For OEMs and ODMs

COB LCD module= PCB + IC+LCD screen+ LED backlight(not necessary)

Monochrome COB LCD Modules are highly popular due to their low-cost and high customization. Our experienced team can develop the right solution with an integrated assembly of different technologies to your hands.

Display Technologies

  • Display type: TN, HTN, STN, FSTN and VA
  • Transmissive, transflective and reflective polarizers
  • Positive and negative modes
  • ITO glass thickness: 0.4mm, 0.55mm, 0.7 mm and 1.1mm
  • Static driving mode and dynamic driving mode
  • Shapes: round, rectangle, octangle and through-holes
  •   View angle: 12 O’clock, 3 O’clock, 6 O’clock, 9 O’clock, and full view angle
  • background-color customization: grey, blue,  yellow-green, black  and so on

Assembly Services

  • Silkscreen: Black mask, red, green, blue, multi-color printing
  • Touch solutions: one-sided ITO film touch technology and double-sided ITO film touch technology
  • In-house backlight assembly
  • customizable PCBA with touch buttons
  • Integration with overlay resistive or capacitive touchscreen 
  • Surface treatment: strengthened glass, electrostatic prevention, polarizer with UV filter
  • Interface: I2C, SPI
  • Connection: PIN, zebra+metal frame (safest solution)

Advantage

  • High safety and stability (biggest advantage)
  • usually used for big sizes
  •  suitable for segment LCD display or dot matrix display with big gaps
  • high customization with complicated functions

3 Ways to increase the brightness

  • increase the number of LED lamps
  • use high power consumption LED lamps
  • adopt injection light guide plate

Disadvantage

  • big size (biggest disadvantage)
  • gaps between each segment are big, around 0.1 mm
  • not suitable for dot matrix display with small gaps
  • difference to replace
  • Simple monochrome COB LCD module could be replaced by monochrome COG LCD module.

Why Work With Us

No more endlessly wasting your valuable time on lousy design monochrome COB LCD modules. DISPLAYBLY’s goal is to let you sit back and relax. Our consultant will keep you informed of the production progress throughout and we take care of all the hard works, including trade stuff, clearance, and logistics, etc.

  • You don’t have to be bothered to focus on the technical details since we are the experts.
  • You don’t have to care about the time difference since we offer 24/7 service.
  • You won’t have trouble designing the products by yourself since we can make the design for you for free.
  • You don’t have to worry about the samples since we will make the prototypes for you until you are satisfied for one-time payment.
  • You don’t have to concern about the quality since we have the best quality control system.
  • You don’t have to be anxious about the lead time since we are always ready and provide the best service on time.

Experienced Team

More than 10 years experience professional engineer team.

High Capacity

More than 10 production lines and can provide 50 thousand pieces of LCD module per day.

Modern Technology

The world’s leading technology and complete sets of imported production equipments.

Strict Quality Control

Implement ISO9001 quality control system to make high-quality standard products.

A Few Steps of LCD Module Production Process

There are more than 30 steps for the production process of LCD module and here only a few typical production steps are displayed. 

ITO Glass Washing

Full Automation IC Bonding Machine

Pressing ACF

Gluing IC

Soldering FPC

High Temperature De-bubble Machine

Full Automation PIN Assembly Machine

Full Automation LCD Assembly Machine

Testing LCD Module

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New Custom LCD Display Design Development

01 Communication

To start, you have to elaborate on your specific demands. It is best if you can offer your drawings. From our experience, many of our customers only have a concept in their mind and they ask for a quote or samples directly. This is not how it works. Sometimes a video conference or a face-face conference is necessary before we can fully understand your requirements. It usually involves a lot of questions, such as: 1. What is the application of the products ? 2. What is the timeline you’re working from? 3. What problem do we expect us to solve for you?

02 Design

After the first step, we both have some basic understandings . We pass some projects which are not suitable for us. And we can move on the next step: design. To better service our customers and save both of us some time, we will ask you to fill in some of our online forms. Online form custom LCD module. This is the basic information we have to acquire. If you are not certain about some parameters of custom LCD module, we will make the most reasonable design for you from engineering prospect.

03 Quote

Once the preliminary drawings are approved, we offer an official quotation which includes the unit prices, the tooling fees and the other details. Submit the payment if you are happy with the prices. If you can’t accept the prices, we can go back to step two. we can make it cheaper by simplifying the design. After we receive the payment, we will start to make the official drawings. It usually takes 1 to 3 days.

04 Prototypes

At this stage, we build samples based on tooling orders to justify proof of the concept. We can’t start the prototype process unless you sign on the official drawings. It usually takes 7 to 25 days to finish the samples base on the difficulties.

05 Validation

You as the customer validate the efficacy of the custom design before we agree to move into the larger production. It is normal to make several times of prototypes. One time tooling fee and no extra cost until you are satisfied.

Ask For A Quick Quote

We will contact you within 1 working day, please pay attention to the email with the suffix “@displaybly.com”. 

Production Videos

Are you still wondering how we produce  COG LCD module, COB LCD module, LCD module hybrid structure, LED backlight module, etc? Check the assembly process videos below and you will find your answers. 

A Review of Assembly Process of LCD Module Hybrid Structure with Membrane Switch Button
A Review of Assembly Process of LCD Module Hybrid Structure with LEDs on the PCB
A Review of Assembly Process of COB LCD Module for Fueling Equipment
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We will contact you within 1 working day, please pay attention to the email with the suffix “@displayman.com”.