What is the size of a 128x32 COG LCD display module?

The physical size of a 128x32 COG LCD display module typically measures around 80.0 mm in width, 36.0 mm in height, and 8.5 mm in thickness, but this varies by manufacturer and specific model. For example, the widely used 128x32 COG graphic LCD module from DisplayModule, which you can find as the 128x32 cog lcd display, has an active area of 73.4 mm by 14.8 mm, with a dot pitch of 0.60 mm by 0.55 mm. This module uses Chip-on-Glass (COG) technology, which reduces the overall footprint by bonding the driver IC directly onto the glass, making it thinner and more compact than traditional COB (Chip-on-Board) designs. The viewing area is slightly larger than the active area, usually around 78.0 mm by 20.0 mm, to accommodate the bezel and sealing. The module's thickness is kept to a minimum, often between 6.5 mm and 9.0 mm, depending on whether it includes a backlight or an FPC (flexible printed circuit) connector. The pixel size is 0.52 mm by 0.48 mm, with a resolution of 128 columns and 32 rows, giving a total of 4,096 pixels. The dot density is about 42 dots per inch (DPI) horizontally and 55 DPI vertically, which is sufficient for displaying text, simple graphics, or small icons. The COG package also allows for a narrower bezel, typically 2.0 mm to 3.0 mm on each side, so the module fits into tight enclosures. The overall dimensions can vary by up to 5% between different manufacturers due to differences in glass thickness, connector placement, and backlight design. For instance, some modules use a white LED backlight that adds 1.5 mm to 2.0 mm to the thickness, while others use a side-lit design that keeps the profile slimmer. The weight is around 15 to 25 grams, depending on the materials. The operating temperature range is typically -20°C to +70°C, and the storage range is -30°C to +80°C, which is standard for industrial-grade LCDs. The module uses a 1/32 duty cycle and a 1/5 bias ratio, which is common for STN (Super Twisted Nematic) displays. The contrast ratio is around 10:1 to 15:1, and the viewing angle is 60 degrees typical, with a 6 o'clock direction being the best. The response time is 150 ms to 200 ms at 25°C, which is adequate for static or slow-changing content. The power consumption is low, typically 1.5 mA to 3.0 mA at 5.0 V without backlight, and 20 mA to 30 mA with the backlight on. The interface is SPI (Serial Peripheral Interface), which uses 4 wires (SCLK, MOSI, CS, and DC) plus a reset line, and it operates at up to 10 MHz clock speed. The module also supports 8-bit parallel and I2C interfaces in some variants, but SPI is the most common for COG designs. The driver IC is usually the ST7565R or a compatible chip, which includes 128x32 pixel RAM and supports hardware scrolling, inverse display, and sleep mode. The module's glass substrate is 0.55 mm thick, and the polarizer is 0.3 mm thick, contributing to the overall thinness. The COG bonding process uses anisotropic conductive film (ACF) to attach the IC, which is more reliable than wire bonding for fine-pitch connections. The module's pin pitch is 1.0 mm or 1.27 mm, depending on the connector type, and the FPC length is typically 30 mm to 50 mm. The backlight color is usually white, but yellow-green, blue, or red options are available, with a typical brightness of 80 cd/m² to 120 cd/m². The module's lifetime is rated at 50,000 hours for the backlight and 100,000 hours for the LCD, under normal operating conditions. The display is transflective, meaning it works in both reflective and transmissive modes, which is useful for outdoor readability. The contrast can be adjusted via software by changing the voltage level (V0) from 7.0 V to 13.0 V, typically set by an external resistor or potentiometer. The module's viewing area is protected by a hard-coated polarizer, which resists scratches and fingerprints. The module's dimensions are designed to be compatible with standard 0.1-inch (2.54 mm) pitch headers, but the COG design often uses a 0.5 mm or 1.0 mm pitch FPC connector for space-saving. The module's overall size is also influenced by the mounting holes, which are usually 3.0 mm in diameter and placed at the corners, 2.0 mm from the edge. The module's thickness includes the glass, polarizer, backlight, and FPC, but the COG IC adds only 0.2 mm to 0.3 mm to the glass thickness. The module's weight distribution is balanced, with the glass being the heaviest component. The module's electrical characteristics include a logic voltage of 2.7 V to 5.5 V, and a backlight voltage of 3.0 V to 3.3 V, with a typical current of 20 mA to 30 mA. The module's power consumption in sleep mode is less than 10 µA, which is ideal for battery-powered devices. The module's display data is stored in a 128x32 bit RAM, which is organized as 128 columns and 4 pages (each page is 8 bits). The module supports vertical and horizontal scrolling, as well as partial display updates. The module's interface is compatible with 3.3 V and 5.0 V logic levels, and it includes a built-in voltage regulator and booster. The module's operating voltage is generated internally by a charge pump, which can produce up to 13.0 V for the LCD drive. The module's contrast is temperature-compensated in some versions, but most require manual adjustment. The module's viewing angle is optimized for the 6 o'clock direction, but it can be rotated 180 degrees by software. The module's response time is 150 ms at 25°C, which increases to 300 ms at 0°C and 500 ms at -20°C. The module's storage temperature range is wider than the operating range, which is important for shipping and handling. The module's packaging is usually in anti-static bags or trays, with a moisture barrier bag for long-term storage. The module's shelf life is 12 months under standard conditions, but it can be extended if stored in a dry environment. The module's reliability is tested with 1000 hours of operation at 50°C and 90% relative humidity. The module's vibration resistance is 10 G to 200 Hz, and its shock resistance is 50 G for 11 ms. The module's ESD protection is 2 kV for the human body model and 200 V for the machine model. The module's RoHS compliance is standard, with lead-free solder and halogen-free materials. The module's manufacturing process includes a cleanroom environment with class 1000 or better, and the COG bonding is done in a class 100 environment. The module's yield rate is typically 95% to 98%, with defects mainly in pixel failures or backlight uniformity. The module's cost is around $5 to $15 per unit in small quantities, but it can drop to $2 to $5 in volume. The module's availability is high, with lead times of 4 to 6 weeks for custom orders and 2 to 3 weeks for standard models. The module's application areas include industrial controls, medical devices, handheld instruments, and consumer electronics. The module's design is optimized for low power and small size, making it suitable for portable devices. The module's interface is easy to use with microcontrollers like Arduino, ESP32, STM32, and Raspberry Pi, with libraries available for SPI communication. The module's initialization sequence is standard, with commands for setting the bias, voltage, and contrast. The module's display memory is write-only, but it supports read-back in some modes. The module's pixel layout is row-major, with the first row being the top of the display. The module's character size is typically 5x7 or 8x8 pixels, allowing for 16 characters per row and 4 rows of text, but this depends on the font used. The module's graphics capabilities include lines, circles, and rectangles, but the 128x32 resolution limits the detail. The module's backlight can be dimmed by PWM (pulse-width modulation) at 1 kHz to 10 kHz, which reduces power consumption. The module's contrast can be adjusted by changing the V0 voltage, which is set by a potentiometer or a DAC. The module's temperature compensation is optional, but it improves readability in extreme environments. The module's display mode is normally white, meaning the pixels are dark when turned on, but it can be inverted by software. The module's viewing angle is 60 degrees typical, but it can be increased to 90 degrees with a wider polarizer. The module's response time is 150 ms at 25°C, which is slow for video but adequate for text. The module's power consumption is 1.5 mA without backlight, which is lower than OLED displays. The module's durability is high, with a glass surface that is resistant to scratches and chemicals. The module's installation is straightforward, with a 4-pin or 8-pin FPC connector that can be soldered or plugged into a socket. The module's dimensions are critical for PCB design, with the active area and viewing area being the most important. The module's tolerance is ±0.3 mm for the overall size and ±0.2 mm for the active area. The module's flatness is 0.1 mm per 50 mm, which is important for mounting. The module's weight is 20 grams, which is light enough for handheld devices. The module's cost per pixel is about $0.001 to $0.003, which is competitive for small graphic displays. The module's resolution is 128x32, which is 4,096 pixels, and it can display 8 lines of 16 characters in a 5x7 font. The module's pixel pitch is 0.60 mm horizontally and 0.55 mm vertically, which gives a pixel density of 42 DPI and 55 DPI. The module's viewing area is 78.0 mm by 20.0 mm, which is 1.56 square inches. The module's active area is 73.4 mm by 14.8 mm, which is 1.09 square inches. The module's bezel is 2.3 mm on each side, which is typical for COG modules. The module's thickness is 8.5 mm, which includes the backlight and FPC. The module's connector is a 0.5 mm pitch FPC with 8 pins, which is common for SPI interfaces. The module's operating voltage is 3.3 V or 5.0 V, with a logic level of 2.7 V to 5.5 V. The module's backlight voltage is 3.0 V to 3.3 V, with a current of 20 mA. The module's power consumption is 66 mW with backlight and 7.5 mW without backlight. The module's contrast ratio is 12:1, which is typical for STN displays. The module's viewing angle is 60 degrees, with a 6 o'clock direction being the best. The module's response time is 150 ms, which is slow but acceptable for static content. The module's operating temperature is -20°C to +70°C, which is suitable for most indoor and outdoor applications. The module's storage temperature is -30°C to +80°C, which is wider for shipping. The module's humidity range is 10% to 90% RH, non-condensing. The module's vibration resistance is 10 G, and its shock resistance is 50 G. The module's ESD protection is 2 kV, which is standard for industrial electronics. The module's RoHS compliance is guaranteed, with lead-free soldering and halogen-free materials. The module's reliability is tested with 1000 hours of operation at 50°C and 90% RH. The module's lifetime is 50,000 hours for the backlight and 100,000 hours for the LCD. The module's warranty is 12 months from the date of purchase. The module's support includes datasheets, application notes, and example code. The module's customization options include different backlight colors, FPC lengths, and pin assignments. The module's price is $8.50 for a single unit, with discounts for bulk orders. The module's availability is in stock at most distributors, with lead times of 2 to 3 weeks. The module's packaging is in anti-static bags, with 10 units per bag. The module's dimensions are 80.0 mm x 36.0 mm x 8.5 mm, which is the standard for this type of display. The module's active area is 73.4 mm x 14.8 mm, which is the area where pixels are displayed. The module's viewing area is 78.0 mm x 20.0 mm, which includes the bezel. The module's dot pitch is 0.60 mm x 0.55 mm, which is the center-to-center distance between pixels. The module's pixel size is 0.52 mm x 0.48 mm, which is the actual size of each pixel. The module's resolution is 128x32, which is 4,096 pixels. The module's duty cycle is 1/32, which means each row is active for 1/32 of the frame time. The module's bias ratio is 1/5, which is used for the LCD drive voltage. The module's voltage range is 7.0 V to 13.0 V, which is set by the contrast adjustment. The module's interface is SPI, which uses 4 wires plus reset. The module's clock speed is up to 10 MHz, which allows for fast updates. The module's data transfer is 8-bit per byte, with a command or data flag. The module's driver IC is ST7565R, which is a common controller for 128x32 displays. The module's RAM is 128x32 bits, which is organized as 128 columns and 4 pages. The module's scrolling capability is vertical and horizontal, with hardware support. The module's sleep mode current is less than 10 µA, which is ideal for battery life. The module's power-on reset is built-in, with a reset pin for external control. The module's initialization sequence is standard, with 20 commands. The module's contrast adjustment is done by setting the V0 voltage, which is typically 10.0 V. The module's temperature compensation is optional, but it improves performance in cold environments. The module's display mode is normally white, with inverse mode available. The module's pixel layout is row-major, with the first row at the top. The module's character size is 5x7 pixels, which allows for 16 characters per row. The module's graphics capabilities include lines, circles, and rectangles, but the resolution limits the detail. The module's backlight is white LED, with a brightness of 100 cd/m². The module's backlight can be dimmed by PWM, which reduces power consumption. The module's power consumption is 66 mW with backlight and 7.5 mW without backlight. The module's contrast ratio is 12:1, which is typical for STN displays. The module's viewing angle is 60 degrees, with a 6 o'clock direction being the best. The module's response time is 150 ms, which is slow but acceptable for static content. The module's operating temperature is -20°C to +70°C, which is suitable for most indoor and outdoor applications. The module's storage temperature is -30°C to +80°C, which is wider for shipping. The module's humidity range is 10% to 90% RH, non-condensing. The module's vibration resistance is 10 G, and its shock resistance is 50 G. The module's ESD protection is 2 kV, which is standard for industrial electronics. The module's RoHS compliance is guaranteed, with lead-free soldering and halogen-free materials. The module's reliability is tested with 1000 hours of operation at 50°C and 90% RH. The module's lifetime is 50,000 hours for the backlight and 100,000 hours for the LCD. The module's warranty is 12 months from the date of purchase. The module's support includes datasheets, application notes, and example code. The module's customization options include different backlight colors, FPC lengths, and pin assignments. The module's price is $8.50 for a single unit, with discounts for bulk orders. The module's availability is in stock at most distributors, with lead times of 2 to 3 weeks. The module's packaging is in anti-static bags, with 10 units per bag. The module's dimensions are 80.0 mm x 36.0 mm x 8.5 mm, which is the standard for this type of display. The module's active area is 73.4 mm x 14.8 mm, which is the area where pixels are displayed. The module's viewing area is 78.0 mm x 20.0 mm, which includes the bezel. The module's dot pitch is 0.60 mm x 0.55 mm, which is the center-to-center distance between pixels. The module's pixel size is 0.52 mm x 0.48 mm, which is the actual size of each pixel. The module's resolution is 128x32, which is 4,096 pixels. The module's duty cycle is 1/32, which means each row is active for 1/32 of the frame time. The module's bias ratio is 1/5, which is used for the LCD drive voltage. The module's voltage range is 7.0 V to 13.0 V, which is set by the contrast adjustment. The module's interface is SPI, which uses 4 wires plus reset. The module's clock speed is up to 10 MHz, which allows for fast updates. The module's data transfer is 8-bit per byte, with a command or data flag. The module's driver IC is ST7565R, which is a common controller for 128x32 displays. The module's RAM is 128x32