Sourcing Monochrome Character LCD Display Module Just in One Place

- The Ultimate Solutions

You need more than just a display, you need a veteran supplier who has been in the field for 20 years to build your brand and grow your profits. Let DISPLAYMAN help you achieve business success.

20 by 2 character stn positive display yellow background black letters–cob lcd module.png

Custom Character LCD Display Module Products

There is a wide range of standard Character LCD modules and only a few selected typical feature products are displayed. 

Display Type: STN/ Dot Matrix

Display Content:  08*02 Character

Display Mode: Negative/Transmissive

Display effect: Blue Background and White Letters

Structure: COB LCD Module

Backlight:  White

Display Type: STN/ Dot Matrix

Display Content:  16*02 Character

Display Mode: Positive/Transmissive

Display effect: Yellow-green Background and Black Letters

Structure: COB LCD Module

Backlight:  White

Display Type: STN/ Dot Matrix

Display Content:  16*04 Character

Display Mode: Positive/Transmissive

Display effect: Yellow-green Background and Black Letters

Structure: COB LCD Module

Backlight:  Green

Display Type: FSTN/ Dot Matrix

Display Content:  20*02 Character

Display Mode: Positive/Transmissive

Display effect: Blue Background and White Letters

Structure: COB LCD Module

Backlight:  Orange

Display Type: STN/ Dot Matrix

Display Content:  20*02 Character

Display Mode: Positive/Transmissive

Display effect: Yellow-green Background and Black Letters

Structure: COB LCD Module

Backlight:  White

Display Type: STN/ Dot Matrix

Display Content:  40*04 Character

Display Mode: Negative/Transmissive

Display effect: Blue Background and White Letters

Structure: COB LCD Module

Backlight:  White

Standard Character LCD Display Module Products

Standard and Custom Character LCD Modules for OEM Devices and Industrial Equipment

DisplayMan supplies Character LCD Displays for instruments, control panels, meters, industrial equipment, medical devices, home appliances, audio products and embedded electronics.

Character LCD modules are selected when the product needs fixed rows of letters, numbers, symbols, menus or simple status information instead of flexible graphics, images or video.

Standard formats such as 16×2, 20×2 and 20×4 are preferred when available because they reduce development risk, tooling and replacement difficulty.

A Character LCD Project Can Include

  • 8×2, 16×1, 16×2, 16×4, 20×2, 20×4 or 40×4 format
  • TN, STN, FSTN or project-based monochrome LCD
  • Positive or negative display mode
  • Reflective, transmissive or transflective structure
  • White, blue, green, yellow-green or orange backlight
  • COB LCD module structure
  • Pin header, connector and pin-definition review
  • PCB outline, viewing direction and mechanical matching
Core Product Positioning

Choose Character LCD Displays when the product needs simple text, numbers or status information in a fixed character format.

Reference Character LCD Product Lineup

The following formats are common reference examples. Final availability and specification must be confirmed according to display mode, backlight, interface, PCB structure, dimensions and quantity.

Display FormatCharacter CapacityTypical StructureDisplay ModeBacklight OptionTypical Use
8×2 Character LCD8 characters × 2 linesCOB LCD moduleSTN / negative or positiveWhite / blue / yellow-greenSmall controllers, meters and compact devices
16×1 Character LCD16 characters × 1 lineCOB LCD moduleSTN / FSTNOptional LED backlightSimple status displays and control panels
16×2 Character LCD16 characters × 2 linesCOB LCD moduleSTN positive or negativeWhite / green / blueInstruments, appliances and industrial devices
16×4 Character LCD16 characters × 4 linesCOB LCD moduleSTN positiveGreen / whiteControl panels and measurement equipment
20×2 Character LCD20 characters × 2 linesCOB LCD moduleSTN / FSTNWhite / orange / yellow-greenIndustrial controllers, meters and audio devices
20×4 Character LCD20 characters × 4 linesCOB LCD moduleSTN / FSTNOptional LED backlightEquipment menus and multi-line information
40×4 Character LCD40 characters × 4 linesCOB LCD moduleSTN negative or positiveWhite / blue / greenLarger control panels and information displays
Format Alone Does Not Guarantee Compatibility

Two 16×2 or 20×4 modules may still use different PCB outlines, connectors, pin definitions, controller ICs, backlights or mounting structures.

What Is a Character LCD Display?

Fixed Character Cells

Text-Row Display Format

The screen is divided into fixed character positions such as 16×2, 20×4 or 40×4.

Simple Monochrome Content

Letters, Numbers and Symbols

Suitable for menus, measurements, status messages, settings and basic product information.

Mature Module Structure

Stable OEM Integration

Common formats are mature, widely used and easier to integrate than a fully custom graphic display.

Example

A 16×2 Character LCD can display 16 characters per line and 2 lines of text. It is not a 16-by-2 pixel graphic display.

Why Use Character LCD Displays?

Simple Text Display

Suitable for letters, numbers, menus, measurements and status messages.

Mature and Cost-Effective

Character LCD technology is widely used in industrial, commercial and embedded products.

Lower Development Risk

Using a standard format can reduce tooling, software and mechanical development work.

Simple Controller Requirements

Fixed character cells need less UI processing than graphic LCD or TFT LCD interfaces.

Multiple Display Effects

Positive, negative and different backlight colors can support different product appearances.

Good Replacement Potential

Existing modules can be reviewed when the exact model, pinout and mechanical information are available.

Character LCD Display Modes and Backlight Options

Selection FactorAvailable DirectionPractical Effect
LCD TechnologyTN, STN, FSTN or project-based reviewAffects contrast, viewing angle, color effect and multiplex performance
Positive ModeDark characters on a lighter backgroundCommon for traditional instruments, controls and meters
Negative ModeLight characters on a darker backgroundRequires suitable backlight and can create a modern appearance
ReflectiveUses ambient lightSuitable for low-power products without constant backlight
TransmissiveRelies on backlightSuitable for negative displays and controlled indoor lighting
TransflectiveUses ambient light and backlightSuitable for mixed lighting conditions
Backlight ColorsWhite, blue, green, yellow-green, orange or project-based reviewChanges product appearance and night visibility
Display Mode and Backlight Must Be Selected Together

A negative Character LCD normally depends on a suitable backlight, while a positive reflective LCD may operate without continuous illumination.

Character LCD Customization Options

  • 8×2, 16×1, 16×2, 16×4, 20×2, 20×4 or 40×4
  • TN, STN, FSTN or project-based LCD
  • Positive or negative display
  • Reflective, transmissive or transflective mode
  • White, blue, green, yellow-green or orange backlight
  • COB LCD module structure
  • Pin header or connector type
  • Pin definition review
  • PCB outline and mounting holes
  • LCD glass and module size
  • Viewing direction
  • Operating temperature
  • Interface and controller review
  • Cable or connector direction
  • Backlight brightness
  • Existing Character LCD replacement
  • Mechanical matching
  • Sample and batch-production validation
Customization Boundary

Standard Character LCD modules are preferred when available. Customization is most practical for display mode, backlight, connector, pin layout, PCB outline, viewing direction and mechanical matching. A completely new format may require tooling, MOQ and engineering review.

Character LCD Product Comparisons

Character LCD vs Graphic LCD

RequirementCharacter LCD DisplayGraphic LCD Display
Display ContentFixed letters, numbers and symbolsIcons, curves, diagrams and flexible graphics
Format8×2, 16×2, 20×4, 40×4 and similarPixel resolutions such as 128×64 or 240×128
UI FlexibilityLimited to character cellsFlexible pixel-based layout
DevelopmentSimpler for text and statusRequires more UI control
Cost DirectionUsually more practical for simple textHigher when graphic flexibility is required
Best ForMenus, status, measurements and messagesIcons, charts and custom UI

Character LCD vs Segment LCD

RequirementCharacter LCD DisplaySegment LCD Display
Content StructurePredefined character cellsCustom fixed digits, icons and symbols
Content FlexibilityCan display different letters and numbers inside each cellOnly displays the designed segment pattern
Typical UseMenus, text, measurements and status messagesMeters, appliances and fixed product indicators
Development DirectionUse standard formats when availableOften custom-designed for one product
Selection LogicChoose for text and changing valuesChoose for fixed icons and lowest-power custom content

Character LCD vs TFT LCD

RequirementCharacter LCD DisplayTFT LCD Display
ColorMonochromeFull color
ContentLetters, numbers and simple symbolsGraphics, images, animation and video
Controller RequirementLowerHigher
Power and ComplexityUsually lowerUsually higher
Best ForSimple instruments, controls and status displaysModern HMI, terminals and graphical products
Selection LogicChoose when simple text is enoughChoose when full graphic UI is required

Character LCD Content vs COB / COG Structure

TermWhat It DescribesRelationship
Character LCDFixed character-row display contentCan use COB or selected COG structure
COB LCDDriver IC bonded on PCBCommon structure for standard Character LCD modules
COG LCDDriver IC bonded directly on LCD glassUsed for selected compact character-style modules

Typical Character LCD Applications

Industrial Controllers

Machine settings, status messages, parameters and basic operator menus.

Measurement Instruments

Values, units, menu text and status information.

Digital Meters

Measurements, configuration information and simple diagnostic messages.

Medical and Laboratory Equipment

Text, values, modes and simple user instructions.

Home Appliances and HVAC

Temperature, settings, mode names and operating status.

Audio Equipment

Input, volume, track, mode and equipment-status information.

Power and Charging Equipment

Voltage, current, charging state and parameter menus.

Access and Vending Equipment

User prompts, status messages and simple operating menus.

Existing LCD Replacement

Replacement projects requiring exact pinout, PCB, backlight and mechanical matching.

How to Select the Right Character LCD Module

1

Confirm That Fixed Character Cells Are Enough

Text, numbers, menus and status messages without flexible graphics.

2

Select the Character Format

8×2, 16×1, 16×2, 16×4, 20×2, 20×4, 40×4 or another reviewed format.

3

Choose Display Mode and Backlight

Positive or negative, reflective, transmissive or transflective, and the required backlight color.

4

Match Interface and Pin Definition

Controller, parallel or serial interface, pin header, connector, voltage and customer PCB.

5

Confirm PCB and Mechanical Structure

Module outline, mounting holes, viewing area, connector direction and enclosure opening.

6

Validate Temperature and Production

Operating range, sample testing, quantity, replacement strategy, acceptance criteria and schedule.

When Character LCD Is the Right Choice

Suitable For

  • Fixed rows of letters and numbers
  • Menus and status messages
  • Simple industrial and embedded products
  • Standard formats such as 16×2 or 20×4
  • Monochrome positive or negative display
  • Optional LED backlight
  • COB module integration
  • Lower-complexity user interfaces
  • Cost-conscious OEM products
  • Existing Character LCD replacement

May Require Another Product Route

  • Icons or graphics must move freely
  • Curves, diagrams or charts are required
  • Full-color images or video are required
  • A custom fixed segment interface is more efficient
  • The product needs a modern touch UI
  • The thinnest possible COG structure is required
  • A complete monitor or terminal is required
  • Transparent display is required
  • No text format or mechanical structure has been defined
  • The quantity is too low for a fully custom module
Adjacent Monochrome LCD Product Pages

Choose Another LCD Direction When Fixed Character Cells Are Not the Main Requirement

Character LCD is the correct product when fixed rows of text and numbers are the main buying reason. Use another product page when flexible graphics, custom segments, matrix content or compact module structure matters more.

Product PageChoose This When
Monochrome LCD DisplaysYou need the main monochrome LCD product entry and general selection
Graphic LCD DisplaysYou need pixel-based graphics, icons or flexible UI
Segment LCD DisplaysYou need custom digits, fixed icons, symbols or low-power content
Dot Matrix LCD DisplaysYou need matrix-style text or simple graphics
COB LCD DisplaysYou need a PCB-based monochrome module structure
COG LCD DisplaysYou need a compact IC-on-glass monochrome module
TFT LCD DisplaysYou need full-color graphics, images or video

What Information Should You Provide?

Character and Display Requirement

  • Required format such as 16×2 or 20×4
  • Module size and viewing area
  • Positive or negative display
  • Reflective, transmissive or transflective mode
  • Backlight color

Electrical and Mechanical Requirement

  • Interface or controller requirement
  • Pin definition and voltage
  • Pin header or connector type
  • PCB outline and mounting holes
  • Viewing direction and operating temperature

Commercial and Replacement Information

  • Sample and production quantity
  • Destination and project schedule
  • Existing model number
  • Datasheet and mechanical drawing
  • Photos or original sample
Replacement Projects Need Pin and PCB Information

Matching only “16×2” or “20×4” is not enough. Send the old module model, connector, pin definition, PCB outline, mounting holes, backlight and sample when possible.

FAQ

What is a Character LCD Display?

A Character LCD Display is a monochrome LCD module designed to show fixed rows of letters, numbers, symbols and simple status information.

What does 16×2 Character LCD mean?

It means the module can display 16 characters per line and 2 lines of text.

What are common Character LCD formats?

Common formats include 8×2, 16×1, 16×2, 16×4, 20×2, 20×4 and 40×4.

When should I choose a Character LCD?

Choose a Character LCD when the product mainly needs fixed text, numbers, menus or status messages and does not require free-position graphics.

When should I choose a Graphic LCD instead?

Choose a Graphic LCD when the product needs icons, curves, diagrams, charts or a flexible pixel-based user interface.

What is the difference between Character LCD and Segment LCD?

Character LCD uses predefined character cells such as 16×2 or 20×4. Segment LCD uses custom fixed digits, icons and symbols designed for one specific product interface.

What is the difference between Character LCD and TFT LCD?

Character LCD is monochrome and intended for simple text or status information. TFT LCD supports full-color graphics, images, video and more complex user interfaces.

Do Character LCD modules normally use COB structure?

Yes. Many standard Character LCD modules use a PCB-based COB structure with the driver IC bonded on the PCB.

Can Character LCD modules use COG structure?

Selected compact character-style modules can use COG construction, but standard text-row modules are commonly supplied as COB modules.

Can you customize the backlight color?

Yes. White, blue, green, yellow-green, orange or another project-based backlight color can be reviewed according to the selected module and quantity.

What display modes are available?

Positive or negative display modes and reflective, transmissive or transflective optical modes can be reviewed.

What LCD technologies are available?

Character LCD projects commonly use STN or FSTN, while TN or another monochrome LCD direction may be reviewed for selected requirements.

What interfaces are available?

The interface depends on the module controller and PCB design. Parallel, serial, I2C, SPI or project-based interfaces may be reviewed.

Can the connector or pin definition be customized?

Yes. Pin header type, connector position, pin definition, cable direction and selected PCB details can be reviewed.

Can you provide wide-temperature Character LCD modules?

Selected modules and custom projects can be reviewed for wider operating temperature. The exact range must be confirmed from the selected module specification.

Can you replace an existing Character LCD?

Yes. Please provide the old module model, datasheet, photos, pin definition, connector, PCB outline, backlight information and sample if available.

What is the main limitation of Character LCD?

Character LCD uses fixed character cells and is not suitable for flexible graphics, images, video or complex modern user interfaces.

What information is required for quotation?

Please provide the required character format, module size, display mode, backlight color, interface, pin or connector requirement, viewing direction, temperature, quantity, schedule and available drawing or sample.

Start Your Character LCD Display Project

Send us the character format, module size, display mode, backlight color, interface, connector, pin definition, viewing direction, temperature, quantity and schedule.

DisplayMan will review whether a standard Character LCD module is suitable or whether a customized module or another monochrome LCD direction better matches the product.

Character LCD is intended for fixed text, numbers and status information. Standard formats are preferred when they meet the display and mechanical requirements.

Send Your Display Requirement

Please share your application, display size, quantity and project background. We will review the most practical display direction.