IPS 1.28 inch Round TFT LCD Display (GC9A01)

Model No. WF0128BTYAA4DNN0

►Rround TFT Display
►1.28 inch TFT LCD
►Resolution : 240x240 dots
►View Direction :80/80/80/80 (IPS)
►Interface :SPI
►Driver IC : GC9A01
►Control-Board : No
►Brightness (cd/m²): 400
►Frame Through Hole : No
►Touch Screen : Without Touch Panel


WF0128BTYAA4DNN0 is a round IPS TFT-LCD screen with a 1.28-inch diameter display with resolution 240x240 pixels. This round TFT display comprises an IPS TFT-LCD panel built with a GC9A01 driver IC that can communicate via SPI interface.

WF0128BTYAA4DNN0 is adopted IPS panel, which has the advantage of higher contrast, true black background when the display or pixel is off and wider viewing angle of Left:80 / Right:80 / Up:80 / Down:80 degree (typical), contrast ratio 1,000:1 (typical value), brightness 400 nits (typical value), anti-glare surface panel. If customers require Capacitive Touch Panel, please choose model No. WF0128BTYAA4DNF10.

The power supply voltage of LCM is from 2.7V to 3.3V, the typical value of 2.8V. It can be operating at temperatures from -20℃ to+ 70℃ and storage temperatures from -30℃ to +80℃. The display modules are suited for compact devices like smart gauges, wearable devices, and meter applications. They are also ideal for home automation products, white products, and video systems.

Round Display

WO128128A | WO128128A2 | WEO128128B | WEO128128D-CTP | WF0128BTYAA4DNN0 | WF0128BTYAA4DNF10 | WF0340ATYAB7MNN0


Round TFT Display, Round TFT LCD Display, 1.28 inch TFT LCD - WF0128BTYAA4DNN0



LCM PIN Definition

Pin Symbol Function
1-6 NC No connection
7 VLED+ Backlit positive
8 VLED- Backlit negative
9 GND Ground
10 CS Chip select signal
11 SCL Serial clock
12 SDA Serial data signal
13 RS Register select signal
14 TE TE signal
16 VCI3.3V LCD Power supply
17 NC No connection
18 GND Ground

General Specifications

Item Dimension Unit
Size 1.28 inch
Pixel Number 240 × RGB × 240 (TFT) pixel
Module dimension 35.60 × 37.74 × 1.56 mm
Active Area 32.40 × 32.40 mm
Pixel Pitch 0.043 × 0.135 mm
LCD type TFT, Normally Black, Transmissive
Viewing Angle 80/80/80/80
TFT Interface SPI
Backlight Type LED, Normally White
Driver IC GC9A01
Touch Panel Without Touch Panel
Surface Anti-Glare

Absolute Maximum Ratings

Item Symbol Min Typ Max Unit
Operating Temperature TOP -20 +70
Storage Temperature TST -30 +80

Electrical Characteristics

Item Symbol Conditions Standard Value Unit
Min Typ Max
Power Supply Voltage for Analog VCI Ta= +25℃ 2.7 2.8 3.3 V
Input High Voltage for LCD VIH - 0.8Iovcc - Iovcc V
Input Low Voltage for LCD VIL - Vss - 0.2 Iovcc V
Output High Voltage for LCD VOH - 0.8Iovcc - Iovcc V
Output Low Voltage for LCD VOL - Vss - 0.2 Iovcc V
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