1.22-inch TFT LCD Module – 240×204 IPS Display

Overview

The RTO12T4I-A1 is a 1.22-inch TFT LCD Module designed for applications requiring a compact, high-quality display. It features a transmissive panel with normal white mode, SPI interface, and an integrated white LED backlight. With its small footprint and reliable performance, it is suitable for portable electronics, industrial controls, and consumer devices.

Key Features

1.22-inch TFT transmissive display with 240×240 RGB resolution
SPI 3-wire interface for simplified connectivity
Wide viewing angle with 12 o’clock viewing direction
White LED backlight with consistent brightness
Compact module size: 24.76mm (W) × 28.35mm (H) × 1.48mm (T)
Driver IC: ST7735S (compatible with ST7789V)
Low power consumption, suitable for battery-powered devices
RoHS compliant

Technical Specifications

Category	Parameter	Symbol	Min	Typ	Max	Unit	Notes
General	LCD Type	–	–	TFT Transmissive, Normal White	–	–	–
	Number of Dots	–	–	240 (RGB) × 240	–	Dots	RGB Vertical Stripe
	Active Area	–	–	21.96 × 21.96	–	mm	–
	Module Size	–	–	24.76 × 28.35 × 1.48	–	mm	Tolerance ±0.2mm
	Viewing Direction	–	–	12 O’clock	–	–	–
	Driver IC	–	–	ST7735S (ST7789V compatible)	–	–	–
	Interface	–	–	SPI 3-wire (SDI/SDO)	–	–	–
	Backlight	–	–	2 White LEDs	–	–	Harvatek, 350–400mcd
Absolute Ratings	Supply Voltage (Logic)	Vcc	-0.3	–	4.6	V	–
	Input Voltage (Logic)	VIN	-0.3	–	4.6	V	–
	LED Current (per LED)	ILED	–	–	30	mA	–
	Operating Temperature	TOP	-20	–	+70	°C	–
	Storage Temperature	TST	-30	–	+80	°C	–
Electrical	Logic Supply Voltage	Vcc	2.5	2.8	3.3	V	VDD terminal
	Input Low Voltage	VIL	-0.3	–	0.2VDD	V	–
	Input High Voltage	VIH	0.8VCC	–	VCC	V	–
	LED Forward Voltage	Vf	2.7	3.2	3.4	V	–
	LED Current (Typical)	ILED	–	40	–	mA	Per LED
Optical	Brightness	B	200	–	–	cd/m²	–
	Contrast Ratio	CR	–	300	–	–	–
	Response Time (Tr+Tf)	–	–	25	–	ms	–
	Viewing Angle (Horizontal)	θx±	50	60	–	deg	CR≥10
	Viewing Angle (Vertical)	θy±	45	–	60	deg	CR≥10
	NTSC Ratio	–	–	55.3	–	%	–
Reliability	High Temp Operation	–	70°C, 96h, powered	–	–	–	–
	Low Temp Operation	–	-20°C, 96h, powered	–	–	–	–
	High Temp Storage	–	80°C, 96h, unpowered	–	–	–	–
	Low Temp Storage	–	-30°C, 96h, unpowered	–	–	–	–
	Humidity Storage	–	60°C, 90%RH, 96h	–	–	–	–
	Thermal Shock	–	-30°C ↔ +80°C, 10 cycles	–	–	–	–
	Vibration Test	–	10–55Hz, 1.5mm, XYZ 2h each	–	–	–	–
	ESD Protection	–	Air: ±4kV; Contact: ±2kV	–	–	–	–
Quality	AQL (Major Defects)	–	–	0.65	–	–	MIL-STD-105E Level II
	AQL (Minor Defects)	–	–	2.5	–	–	–
	MTBF	–	–	50,000 hours	–	–	Under normal conditions

Interface Pinout

Pin	Symbol	Description
1	GND	Ground
2	LED-K	LED Cathode
3	GND	Ground
4	LED-A	LED Anode
5	VCC	Power Supply (2.8V)
6	CS	Chip Select
7	RES	Reset (Low Active)
8	DC(NC)	No Connect
9	SCK	Serial Clock
10	SDA	Serial Data Input
11–15	CTP pins	Touch Panel Interface (3.0V)
16	GND	Ground

Applications

Mobile Phones
Portable Gaming Devices (PSP)
PDAs & Handheld Terminals
GPS Navigation Systems
Industrial Control Panels
Medical Monitoring Devices
Consumer Electronics

Packaging & Handling

Modules are packed in anti-static trays and boxes.
Recommended storage: 25±10°C, 50±10% RH, away from sunlight.
ESD protection required during handling.
Soldering temperature not to exceed 280°C for ≤3 seconds.

Why Choose JicTech?

JicTech delivers reliable, high-quality LCD modules with consistent performance, rigorous testing, and comprehensive quality assurance. This module is backed by extensive reliability validation, clear optical specs, and detailed inspection standards—making it a trusted choice for your embedded display needs.