128x32 Chip on glass LCD STN negative With Backlight ST7567 3.3V
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DetermineCore Features & Functional Highlights of this 128x32 Chip on glass LCD
This Hotdisplay 128x32 Chip on Glass LCD delivers bright white pixels against a vibrant blue background. As a transmissive display, it is engineered for optimal visibility and impressive color performance in darker environments. The built-in high-intensity backlight ensures high contrast and readability for all graphics. Fully compatible with Arduino/C8051, this graphic LCD module integrates seamlessly with various electronic systems.
Our Chip on Glass LCD eliminates the need for a separate PCB by directly bonding the driver IC to the glass substrate. This advanced Chip on Glass LCD design results in an ultra-slim profile (just 3.3mm thick) and significantly reduced weight, making it ideal for space-constrained devices. The Chip on Glass LCD architecture naturally lowers power consumption—a critical advantage for battery-operated equipment—while maintaining high reliability through fewer interconnection points.
Key functional highlights include:
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High Contrast & Readability: White backlight on a blue background ensures crisp graphics even in low-light conditions.
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Wide Temperature Range: Performs exceptionally well from -20°C to 70°C, withstanding harsh operating environments.
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Built-in ESD Protection: Anti-static design up to 8KV enhances product longevity.
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Low Power Operation: 3.3V supply voltage reduces energy draw, extending battery life.
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Simple Integration: MCU interface and ST7567 driver chip allow direct connection to Arduino, C8051, and other platforms.
Parameter of the 128x32 Chip on glass LCD
|
ITEM |
parameter |
Unit |
|
Name |
HTG12832L-25W |
|
|
Number of dots |
128x32 |
dots |
|
Module size |
36.5x19.9x3.3 |
mm |
|
VA size |
32.0x10.1 |
mm |
|
AA size |
29.66x8.45 |
mm |
|
Pixel pitch |
0.235x0.202 |
mm |
|
IC |
ST7567 |
|
|
Power supply voltage |
3.3V |
V |
|
Backlight |
White |
|
|
Display mode |
STN- |
|
|
Drive mode (Duty) |
1/64 duty cycle |
|
|
Type |
COG LCD |
|
|
Features |
Transmissive |
Key Application Scenarios of the 128x32 Chip on glass LCD
Thanks to its compact size and robust performance, this Chip on Glass LCD is specifically chosen for applications where space and reliability are critical. The primary target is Bank U-Shield (banking security tokens/authenticators), where the display must provide clear, instant readouts of one-time passwords (OTPs) and transaction data.
Beyond banking security devices, this Chip on Glass LCD excels in:
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Portable Medical Devices: Glucose meters, thermometers, and wearable monitors benefit from the low power and slim design.
-
Industrial Control Panels: Small human-machine interfaces (HMIs) for factory automation, especially in dim environments.
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Smart Home Terminals: Thermostats, security keypads, and energy monitors requiring clear white-on-blue graphics.
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Automotive Accessories: Dashboard information displays (clock, temperature, fuel efficiency) where the 6:00 viewing angle is ideal.
The module’s FPC-28PIN connector and MCU interface allow rapid prototyping and easy replacement in existing designs. Its ESD 8KV protection is particularly valuable in banking and industrial settings where static discharge is common. Whether you need a display for a secure payment device or a portable instrument, this Chip on Glass LCD delivers consistent, legible output across all operating conditions.
Technical Solution Highlights:
| Solution Area | Implementation |
| Display Driving | ST7567 driver chip with built-in charge pump; no external LCD driver required. |
| Interface Mode | Parallel/Serial MCU interface (flexible pin mapping). |
| Optical Performance | Transmissive mode + white LED backlight for 200:1 typical contrast ratio. |
| Mechanical Integration | FPC connector with stiffener; 3.3mm total thickness allows bezel-free designs. |
| Environmental Hardening | Operating temp -20~70°C; storage -30~80°C; 8KV ESD contact discharge. |
The Chip on Glass LCD architecture minimizes parasitic capacitance and improves signal integrity compared to traditional COB (Chip on Board) modules. Developers can directly drive the display using the included ST7567 initialization sequence examples available in standard Arduino libraries. For high-volume production, the COG process ensures consistent quality and faster assembly. This technical solution balances performance, power, and physical footprint—making it the preferred choice for portable and industrial graphic displays.
Terminal Function of the 128x32 Chip on glass LCD



















