128x128 LCD Display Module COB 3.06-inch - RG128128A - Raystar

128x128 LCD Display Module Graphic COB 3.06-inch (RA6963 IC)

Model No. RG128128A

The RG128128A is a 3.06-inch 128×128 LCD module with COB (Chip-On-Board) structure, designed for embedded and industrial applications. This 128×128 LCD display features a 55.01 × 55.01 mm active area, LED backlight, and RA6963 controller IC with an 80-series parallel interface, ensuring stable performance and easy integration. An additional PCB is included to save users the effort of developing their own, while four screw holes allow for quick and secure mounting of the gLCD 128×128.

Engineered for durability, the RG128128A operates within a wide temperature range of -20°C to +70°C and supports a 5V logic supply. With low power consumption, a 1/128 duty cycle, and long LED lifetime, this LCD 128×128 module delivers reliable performance even in demanding environments.

If you need technical support or product quotes for the RG128128A or other 128×128 LCD displays, please feel free to contact our sales team!

Data Source Ref: RG128128A-FHW-V

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General Specs
Interface Pin Function
Contour Drawing
Absolute Maximum Ratings
Electrical Characteristics

Item	Dimension	Unit
Structure	COB
Size (Diagonal)	3.06	inch
Dot Matrix / Resolution	128 × 128	dots
Module Dimension	85.0 × 100.0 × 14.5 (MAX)	mm
Viewing Area	62.0 × 62.0	mm
Active Area	55.01 × 55.01	mm
Mounting Hole	75.0 × 94.0	mm
Dot / Pixel Size	0.40 × 0.40	mm
Dot / Pixel Pitch	0.43 × 0.43	mm
IC	RA6963
Interface	8080
Power Supply	5V Negative Voltage Optional
Duty	1/128 duty cycle
Type	Graphic LCD Display Module

RA6963 Controller with 80-Series Interface

Pin No.	Symbol	Level	Description
1	FGND	—	Frame ground
2	GND	0V	Ground
3	Vdd	—	Power supply for logic
4	Vo	—	Power supply for LCD driver
5	/WR	L	Data write. Write data into RA6963 when /WR = L
6	/RD	L	Data read. Read data from RA6963 when RD = L
7	/CE	L	Chip enable the controller RA6963
8	C/D	H / L	WR=L , C/D=H : Command Write C/D=L: Data write RD=L , C/D=H : Status Read C/D=L: Data read
9	NC	—	No connection
10	/RESET	L	Reset signal
11	DB0	H / L	Data bus line
12	DB1	H / L	Data bus line
13	DB2	H / L	Data bus line
14	DB3	H / L	Data bus line
15	DB4	H / L	Data bus line
16	DB5	H / L	Data bus line
17	DB6	H / L	Data bus line
18	DB7	H / L	Data bus line
19	FS	H / L	Pins for selection of font ; H : 6 * 8 , L : 8 * 8
20	Vee	—	Negative Voltage Output
21	A	—	Power supply for B/L +
22	K	—	Power supply for B/L－

Mechanical Dimensions of 128x128 LCD Display

128x128 LCD Display Module COB 3.06-inch - RG128128A Contour Drawing - Raystar

Operating Conditions of gLCD 128x128

Item	Symbol	Min	Typ	Max	Unit
Operating Temperature	TOP	-20	－	+70	℃
Storage Temperature	TST	-30	－	+80	℃
Input Voltage	VIN	-0.3	－	VDD+0.3	V
Supply Voltage For Logic	VDD-VSS	-0.3	－	+7.0	V

Power Supply & Signal Levels of LCD 128x128

Item	Symbol	Condition	Min	Typ	Max	Unit
Supply Voltage For Logic	VDD-VSS	－	4.5	5.0	5.5	V
Supply Voltage For LCD	VDD-V0	Ta=-20℃ Ta=25℃ Ta=70℃	－ 16.2 15.2	－ 16.35 －	18.6 16.5 －	V V V
Input High Volt	VIH	－	0.8VDD	－	VDD	V
Input Low Volt	VIL	－	0	－	0.15 VDD	V
Output High Volt	VOH	－	VDD-0.3	－	VDD	V
Output Low Volt	VOL	－	0	－	0.3	V
Supply Current	IDD	－	－	45	50	mA