TXW395039B0-HYE 3.95 inch 720×720 Round IPS TFT LCD Display Module, 400 nits, 4-Lane MIPI DSI, ST7703I, G+F+F Capacitive Touch GT911, -20~60 °C, for 86 Smart Switch, HVAC Panel, Mini-HMI

A vibrant 3.95" circular IPS display with 720×720 pixels, 400 nits brightness and all-viewing-angle technology. Driven by ST7703I via 4-lane MIPI DSI, the module offers 16.7 M true-colour depth and streaming-grade 60 fps refresh. The bonded G+F+F capacitive touch (GT911, I²C) works with 1 mm glass, gloves or wet fingers down to -20 °C. Only 84.37 mm × 3.23 mm, it drops straight into 86 wall-switch boxes, fresh-air vent panels, portable players or industrial mini-HMIs. Operating -20 °C~+60 °C, storage -30 °C~+70 °C, 30 000 h LED life. CE/FCC/RoHS/REACH ready, Linux & Android drivers open-source.

Detailed explanation

・square – 71.93 mm active area, 1:1 aspect ratio maximises usable pixels in Ø 86 mm cut-outs.
・Daylight Readable – 400 cd/m² IPS panel, 800:1 contrast, 65 % NTSC colour gamut, no colour wash-out at 80° viewing cone.
・Smooth MIPI Stream – 4-lane DSI @ 1 Gbps/lane, supports continuous 720×720@60 Hz with <1 ms tearing when TE enabled.
・Reliable Touch – G+F+F stack, 5-point multi-touch, 100 M clicks life, GT911 controller with auto-calibration & water-rejection firmware.
・Wide-Temp Design -20 °C~+60 °C operation, -30 °C~+70 °C storage; passes 96 h +70 °C / 96 h -30 °C, 10-cycle thermal shock, 50 °C/90 %RH 96 h.
・Long-Life Backlight – 10-chip white LED array, 14~16 V @ 40 mA typical, 30 000 h to 50 % brightness, PWM dimming 1 %-100 %.
・Mechanically Flexible – default 30-pin 0.5 mm pitch FPC, optional 60 mm/100 mm length, ZIF/connector; 3-step ESD guard ≥8 kV HBM.
・Eco & Cert – Lead-free SMT, halogen-free BLU, CE, FCC Part 15 Class B, RoHS, REACH, IEC-60068-2-14/-2-78 reliability reports available.
・Plug & Code – open-source Linux DRM driver, Android HAL, STM32 HAL, ESP32-S3 example; power-on/-off sequence diagrams & DSI timing tables provided.
・Application Ready – 86 smart wall switches, HVAC thermostats, fresh-air vent displays, kitchen hoods, portable audio, DJ controllers, industrial mini-HMIs.

Specifications

Brand: TXWEI / Tianxianwei
Model: TXW395039B0-HYE
Screen Size: 3.95 inch
Resolution: 720 × 720 pixels
Pixel Density: 254 PPI
Active Area: 71.93 mm Ø
Outline (LCM+CTP): 84.37 × 84.37 × 3.23 mm
Weight: ~35 g
Display Type: IPS, Normally Black, RGB vertical stripe
Colour Depth: 16.7 M (8-bit)
Viewing Direction: ALL (80°/80°/80°/80°)
Brightness: 400 cd/m² typ.
Contrast Ratio: 800:1
Backlight: 10 × white LED, edge-lit, PWM dimming
LED Life: 30 000 h @ 20 mA
Interface: 4-lane MIPI DSI, 1 Gbps/lane
Touch Technology: G+F+F capacitive, multi 5-point
Touch IC: GT911
Touch Interface: I²C (100 k/400 k)
Supply Voltage: 3.3 V (IOVCC), 2.8-3.3 V (VCI), 14-16 V (LED)
Operating Temp: -20 °C ~ +60 °C
Storage Temp: -30 °C ~ +70 °C
Humidity: 90 % RH max
ESD: ±8 kV contact, ±15 kV air
Compliance: CE, FCC, RoHS, REACH, halogen-free
Package: Tray + vacuum bag, 50 pcs/inner box, 4 box/carton
Warranty: 12 months

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