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COB (Chip-On-Board) LCD modules are passive-matrix displays designed with a pcb, where the controller IC or driver is directly mounted on the back of the PCB, and the PCB is affixed to the LCD glass. The COB mounting method allows for easy assembly of the display to any design application. These COB LCD modules consist of both character and graphic LCD display types in a wide variety of sizes and colors.



COB LCD application
  • POPULAR INDUSTRIES:
    • • Lottery/Casino
    • • Medical
    • • Military
    • • Oil/Gas/Energy
    • • POS/Retail/Vending
    • • Scales
    • • Telecom/Comm
    • • Test & Measurement
  • • Agriculture
  • • Appliance
  • • Audio/Video
  • • Automotive/Transportation
  • • Computers/Equipment
  • • Consumer
  • • Controls/HVAC/Security
  • • Handheld

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GRAPHIC LCD MODULES

Our graphic LCD modules are available in industry standard sizes and interfaces. Current resolution sizes include 122x32, 128x64, 144x32, 160x32, 160x128, 192x32, 240x64, 240x128 and 320x240 pixels. These displays use a dot matrix pattern to display both text and simple bitmap images.


Graphic displays

FEATURES

  • • STN or FSTN display types
  • • Positive or negative display modes
  • • Monochrome graphics
  • • High brightness backlight
  • • Custom touch panels available
  • • Wide operating temperature
  • • RoHS compliant


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CHARACTER LCD MODULES

Our character LCD modules are monochrome, passive matrix displays with pre-programmed font tables built-in. They come in standard sizes, from 1 line x 8 characters, to 4 lines x 40 characters that can be compatible replacements for some of our VFD modules.


Character displays

FEATURES

  • • 8 backlight color options
  • • Low power, high brightness backlight
  • • Positive or negative image options
  • • Industry standard sizes and interfaces
  • • 4 built-in font tables
  • • Wide operating temperature
  • • RoHS compliant


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SERIAL LCD MODULES

Our serial displays are standard sized character LCD modules integrated with RS232, I2C and SPI serial interfaces. With this type of display, there are no more additional bulky “daughter boards” which results in better usability and cost. Software controlled contrast and backlight brightness simplifies development and maximizes application performance.


Serial displays

FEATURES

  • • Software controlled contrast and brightness
  • • Simple hardware interfacing
  • • No extra boards or logic required
  • • Standard fonts
  • • A variety of backlight color options
  • • Wide operating temperature
  • • RoHS compliant


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HOW SERIAL DISPLAYS WORK


serial display back

Serial LCD modules have three unique interfaces selectable by soldering jumpers onto the back of the display's PCB. These displays also have an on-board PIC microprocessor that initializes the LCD on power up and translates RS232, SPI or I2C protocol into standard parallel HD44780 protocol. All standard LCD commands are available in each interface protocol.

Like any traditional character LCD, text is displayed on the screen by sending each character's ASCII value to the display's controller. With the addition of the on-board interface translator IC, not only does it eliminate the need for an additional board or logic device, it also allows for easy adjustment of the LCD's contrast and backlight brightness through use of software commands.



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SERIAL INTERFACES

LCD serial displays feature three unique selectable interfaces:

RS232
5V TLL non-inverted
300-115.2K baud rate (9600 default)

I2C
100KHz max clock rate
Definable bus address (0x50 default)
Pull-up resistors are built-in

SPI
100KHz max clock rate
High level idle clock, active low slave select



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COMPATIBLE DISPLAYS

The following chart indicates which serial displays are replacement options for our OLEDs, VFD modules and character LCDs.

OLED Character LCD Character LCD Serial VFD Module
NHD-0216KZW NHD-0216K1Z NHD-0216K3Z M0216SD-162SDAR2-1
NHD-0216SZW NHD-0216SZ NHD-0216S3Z M0216MD-162MDBR2-J
NHD-0220DZW NHD-0220DZ NHD-0220D3Z M0220SD-202SDAR1
NHD-0420DZW NHD-0420DZ NHD-0420D3Z M0420SD-204SDAR1-3


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2x16 Modular OLEDs

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