1.54-inch TFT LCD Module – Square 240×240 IPS Display

Overview

The RT0154T41‑A2 is a 1.54‑inch IPS TFT LCD Module designed for applications that demand high brightness, excellent viewing angles, and interface flexibility. With its 240×240 RGB resolution, SPI + 16‑bit RGB dual interface, and integrated triple‑LED backlight, this module is suitable for industrial controls, handheld terminals, and consumer devices. The IPS panel ensures consistent color and clarity from all directions, while the compact form factor supports easy integration into space‑constrained designs.

Key Features

1.54‑inch IPS TFT panel with wide viewing angles (80° typical in all directions)
High brightness: 300 cd/m² minimum, ensuring readability in varied lighting
High contrast ratio: 800:1 for vivid and sharp images
Dual interface: SPI + 16‑bit RGB for design flexibility
Compact module size: 30.62mm (W) × 33.91mm (H) × 1.85mm (T)
Driver IC: ST7789V2
White LED backlight with 3 LEDs in parallel configuration
Operating temperature: ‑20°C to +70°C
RoHS compliant

Technical Specifications

Category	Parameter	Symbol	Min	Typ	Max	Unit	Notes
General	LCD Size	–	–	1.54 inch	–	–	–
	Panel Type	–	–	a‑Si TFT active matrix	–	–	IPS / Normally Black
	Resolution	–	–	240 (RGB) × 240	–	pixels	–
	Display Colors	–	–	65K	–	colors	–
	Active Area	–	–	27.72 × 27.72	–	mm	–
	Pixel Pitch	–	–	0.1155 × 0.1155	–	mm	–
	Module Size	–	–	30.62 × 33.91 × 1.85	–	mm	Tolerance ±0.1mm (H,V) ±0.2mm (T)
	Viewing Direction	–	–	All directions	–	–	–
	Driver IC	–	–	ST7789V2	–	–	–
	Interface	–	–	SPI + 16‑bit RGB	–	–	–
	Backlight	–	–	3 White LEDs (parallel)	–	–	–
Absolute Ratings	Operating Temperature	Top	‑20	–	+70	°C	–
	Storage Temperature	Tst	‑30	–	+80	°C	–
	Humidity	RH	–	–	90% (max 60°C)	RH	–
Electrical	Analog Supply Voltage	VDD	2.4	–	3.3	V	–
	Logic Supply Voltage	VDDI	1.65	–	3.3	V	–
	Input High Voltage	VIH	0.7VDD	–	VDD	V	–
	Input Low Voltage	VIL	VSS	–	0.3VDD	V	–
	Output High Voltage	VOH	VDD‑0.4	–	VDD	V	–
	Output Low Voltage	VOL	VSS	–	VSS+0.4	V	–
	LED Forward Voltage	Vf	2.8	3.0	3.2	V	If=60mA total
	LED Current (per LED)	If	–	20	–	mA	Constant current drive
Optical	Contrast Ratio	CR	(700)	(900)	–	–	Typical 800:1
	Luminance (White)	Lv	300	–	–	cd/m²	Center, normal view
	Luminance Uniformity	δWHITE	80	–	–	%	–
	Response Time	Tr+Tf	–	30	40	ms	–
	Viewing Angle (CR≥10)	θ	–	80	–	deg	3, 6, 9, 12 o’clock
	NTSC Ratio	S	–	–	48%	–	–
	White Chromaticity (x)	Wx	TBD	TBD	TBD	–	CIE1931 (center)
	White Chromaticity (y)	Wy	TBD	TBD	TBD	–	CIE1931 (center)
Reliability	High Temp Storage	–	80°C, 48h	–	–	–	–
	Low Temp Storage	–	‑30°C, 48h	–	–	–	–
	High Temp Operation	–	70°C, 48h, powered	–	–	–	–
	Low Temp Operation	–	‑20°C, 48h, powered	–	–	–	–
	Thermal Shock	–	‑20°C ↔ +70°C, 10 cycles	–	–	–	–
	ESD Protection	–	±6kV (air), ±4kV (contact)	–	–	–	–
Quality	AQL (Major Defects)	–	–	0.65	–	–	MIL‑STD‑105E Level II
	AQL (Minor Defects)	–	–	1.5	–	–	–
	Lifetime (MTTF)	–	–	20,000 hours	–	–	Normal conditions

Interface Pinout (LCM Port – 40‑pin)

Pin	Symbol	I/O	Description
1	LED_A	P	LED anode (backlight)
2	LED_K	P	LED cathode (backlight)
3,4,24,30,35,38‑40	GND	P	System ground
5,6	VDDI	P	I/O voltage supply (1.65‑3.3V)
7	SDO	O	SPI data output
8‑23	DB15‑DB0	I/O	16‑bit RGB data bus
25	SDA	I/O	SPI data input
26	DOTCLK	I	Dot clock (RGB interface)
27	ENABLE	I	Data enable (RGB interface)
28	HSYNC	I	Horizontal sync (RGB interface)
29	VSYNC	I	Vertical sync (RGB interface)
31	WRX	I	Write signal (4‑line serial interface)
32	DCX	I	Data/command selection (SPI)
33	CSX	I	Chip select (active low)
34	RESX	I	System reset
36,37	VDD	P	Analog power supply

Note: Interface logic levels are referenced to VDDI and GND.

Applications

Industrial HMI and control panels
Portable medical and test equipment
Handheld terminals and scanners
Consumer electronics displays
IoT and embedded display solutions
Educational and interactive devices
POS and kiosk systems

Reliability & Quality Assurance

Extended environmental testing (temperature, humidity, thermal shock, ESD)
High‑standard inspection per MIL‑STD‑105E
20,000‑hour minimum operational lifetime
IPS technology ensures consistent viewing performance over time

Packaging & Handling Notes

Modules are shipped in anti‑static, moisture‑protective packaging.
Store in conditions of 25±10°C, 40±20% RH, away from direct light.
ESD precautions must be observed during handling.
Avoid mechanical stress, bending, or impacts to the glass panel.

Why Choose JicTech?

JicTech combines advanced IPS display technology with stringent manufacturing controls to deliver bright, reliable, and flexible TFT modules. With wide viewing angles, high brightness, dual‑interface support, and robust environmental ratings, the RT0154T41‑A2 is a dependable choice for professional and industrial display applications.

Ready to integrate a bright, flexible display into your project? Contact us today for samples, pricing, and technical support!