Circular Display, 3.4" Circular Screen TFT LCD Display

Model No. WF0340ATYAB7MNN0

►Circular Display
►Size: 3.4 inch
►Resolution : 800 x 800 dots
►View Direction : Wide View (IPS)
►Interface : MIPI DSI
►Driver IC : ILI9881C
►Control-Board : No
►Brightness(cd/m2) : 300
►Frame Through Hole : No
►Touch Screen : No


WF0340ATYAB7MNN0 is a 3.4-inch Circular Screen IPS TFT Display with a resolution of 800x800 dots. It uses IPS (In-plane Switching) technology to achieve fast and stable response time, higher frequency transmittance, and better color performance. The most significant advantage of IPS is the wider viewing angles of up: 85/ down: 85/ left: 85/ right: 85 degrees. This circular TFT display has the module dimensions of 94.9 x 96.95 mm and the active area of 87.6 x 87.6 mm. It boasts a built-in ILI9881C driver IC, supporting 4-wire MIPI interfaces. The contrast ratio of the module is 1200:1, the brightness is 300cd/m2 (typical value), the analog circuit voltage is 3.3V (typical value), and the logic circuit voltage is 1.8V.

The operating temperature range of this 3.4" LCD is from -20℃ to +70℃, and the storage temperature range covers from -30℃ to +80℃. The circular TFT LCD display is suitable for home appliances, electronic alarm clocks, cocktail machines, and other products requiring circular display screens.


Circular Display Screen, Display Circular, Circular Screen, Circular TFT Display, Circular TFT LCD Display, 3.4 LCD - WF0340ATYAB7MNN0



LCM PIN Definition

Pin Symbol Function
1 VLED+ VLED backlight anode.
2 VLED- VLED backlight cathode.
3 VLED- VLED backlight cathode.
4 VCI Power supply for the analog power
5 IOVCC Power supply for the logic power and I/O circuit
6 RESET Reset signal(low active) (RESET=RESX)
7 TE Tearing effect output
8 NC No connection
9 GND Power ground
10 D0P MIPI-DSI data lane 0 positive input pin.
11 D0N MIPI-DSI data lane 0 negative input pin
12 GND Power ground
13 D1P MIPI-DSI data lane 1 positive input pin.
14 D1N MIPI-DSI data lane 1 negative input pin.
15 GND Power ground
16 CLKP MIPI-DSI data lane positive input pin.
17 CLKN MIPI-DSI data lane negative input pin.
18 GND Power ground
19 D2P MIPI-DSI data lane 2 positive input pin.
20 D2N MIPI-DSI data lane 2 negative input pin
21 GND Power ground
22 D3P MIPI-DSI data lane 3 positive input pin.
23 D3N MIPI-DSI data lane 3 negative input pin
24 GND Power ground
25-30 NC No connection

General Specifications

Item Dimension Unit
Size 3.4 inch
Pixel Number 800 × RGB × 800 (TFT) dots
Module dimension 94.9 (W) x 96.95 (H) x 2.22 (D) mm
Active Area 87.6 x 87.6 mm
Pixel Pitch 0.1095 x 0.1095 mm
LCD type TFT, Normally black, Transmissive
Viewing Angle 85/85/85/85
Driver IC ILI9881C
TFT Interface 4-Lanes MIPI
Backlight Type LED, Normally White
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
Power Supply voltage 1 VCI~GND >-0.3 +3.6 V
Power Supply voltage 2 IOVCC~GND -0.3 +3.3 V
Logic Input Voltage Range VIN -0.3 IOVCC+0.3 V
Logic Output Voltage Range VO -0.3 IOVCC+0.3 V

Electrical Characteristics

Item Symbol Min Typ Max Unit
Supply voltage for analog circuit VCI 2.5 3.3 3.6 V
Supply voltage for logic circuit IOVCC 1.65 1.8 3.3 V
Current for VCI I-vci - 20 30 mA
Current for IOVCC I-iovcc - 20 30 mA
Input voltage “H” level VIH 0.7*IOVCC IOVCC V
Input voltage “L” level VIL GND 0.3*IOVCC V
Output voltage “H” level VOH 0.8*IOVCCI IOVCC V
Output voltage “L” level VOL GND 0.2*IOVCC V
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