JGS12864W2001 [12864 Monochrome Display]

Keywords: 12864 monochrome screen, STN monochrome screen, dot matrix screen factory

JGS12864W2001 [12864 Monochrome Display] Detailed Parameters

Model: JGS12864W2001

Product Type: STN Horizontal Screen

Resolution: 128×64

Dimensions (L×W×H): 47.8×36.8×2.1

Viewing Area (VA): 44×29

Active Area (AA): 40.93×24.93

Display Size: 2.0

Viewing Angle: 12H

Backlight Type or Brightness: TBD

LED: TBD

Number of Connection Pins: 30

Interface Type: TBD

Special Note: Dot Matrix Screen

Operating Temperature: -20~70°C

Storage Temperature: -30~80°C

JGS12864W2001 [12864 Monochrome Display] typically refers to a 128×64 graphic dot matrix LCD, whose working principle mainly involves liquid crystal display technology, dot matrix storage and display, and control of the driving circuit. Its main working principles are:

1. Liquid Crystal Display Technology

Liquid crystal display is a technology that utilizes changes in the optical properties of liquid crystal materials under an electric field to display images. In the 12864 monochrome display, liquid crystal material is encapsulated between two glass plates, forming tiny liquid crystal cells.

Each liquid crystal cell corresponds to a display point, and these display points are arranged in a 128×64 array, forming the entire display area of the screen.

2. Dot Matrix Storage and Display

The 12864 display has an internal RAM called the Display Data RAM (DDRAM), which stores dot matrix information. When a specific graphic or character needs to be displayed, the corresponding dot matrix information is written into the appropriate storage unit of the DDRAM.

For Chinese characters, due to the large variety, a 16×16 dot matrix area is typically used to display one Chinese character, ensuring clarity while accommodating a sufficient number of character types. For non-Chinese characters, an 8×16 dot matrix area is generally used, often referred to as half-width fonts.

The display controls the display state (on or off) of each liquid crystal cell by scanning the dot matrix information in the DDRAM, thereby presenting the corresponding image or character on the screen.

3. Control of the Driving Circuit

The driving circuit of the 12864 display mainly consists of row drivers and column drivers. The row drivers control the liquid crystal cells in each row, while the column drivers control those in each column.

The left and right halves of the display are controlled by different driving circuits and memory units, selected via chip select signals CS1 and CS2. This design allows for greater flexibility and convenience in manufacturing and maintenance.

The display content is managed through connection with a microprocessor (such as an MCU). The microprocessor sends instructions and data to the display to control its content and display mode. These instructions and data are transmitted through the display’s interface circuit (e.g., parallel or serial interface) to the internal controller, which then parses and executes the corresponding operations.

4. Other Functional Features

In addition to basic display functions, the 12864 monochrome display also offers various features such as cursor display, screen shifting, and sleep mode. These features can be activated by sending specific instructions to the display.

Furthermore, some models of the 12864 display come with built-in Chinese character libraries, allowing direct display of Chinese characters without complex dot matrix information processing. This makes it more convenient and efficient for applications requiring Chinese character display.

In summary, the working principle of the JGS12864W2001 [12864 Monochrome Display] is based on liquid crystal display technology, dot matrix storage and display, and control of the driving circuit. By sending instructions and data to the display, its content and display mode can be controlled to meet various application requirements.

For the detailed specification sheet or documentation of the Jiaguan JGS12864W2001 [12864 Monochrome Display], please contact Engineer Dong.