H040R-30MB-A1 is a circular 4-inch TFT LCD module. This LCD screen adopts an IPS panel, with a resolution of 720×720, full viewing Angle, MIPI 30-pin interface, JD9365DA Driver IC, and a brightness of 350nit. The working temperature can withstand -20℃ to +70℃, and a touch screen can be optionally equipped.
This 4-inch circular TFT LCD screen is mainly applied in automotive and industrial instruments: suitable for automotive instrument panels, navigation systems or industrial control panels. Its circular shape matches the layout of traditional instruments, facilitating real-time monitoring of vehicle conditions or production processes. Professional instruments and interactive devices: including aviation instruments, audio mixing consoles or security monitoring terminals, utilize the ring-shaped display feature to optimize parameter visualization and operational efficiency. Smart home and control Terminal: In a smart home system, a 4-inch circular screen is often integrated into smart door locks (such as video door locks), central control panels or temperature control devices, used to display status information or operation interfaces. In addition, it can also be used in medical instruments and industrial control instruments.
Mechanical Drawing
Specification Parameters
Feature
Spec
Model Name
H040R-30MB-A1
LCD Size
4 inch
Display Format
720×720
Interface
MIPI 30pin
Luminance
350 cd/m2
Touch screen
None, optional
Viewing Direction
ALL (IPS)
Color Depth
16.7M
Driver IC
JD9365DA
LCM (W x H x D) (mm)
105.6 * 109.87 * 2.1
Active Area(mm)
101.52 * 101.52
Operating Temperature
-20℃ ~ +70℃
Storage Temperature
-25℃ ~ +75℃
Operating Voltage
18V
Interface Definition
Pin No.
Symbol
Description
1
LEDA
LED backlight anode
2
LEDK
LED backlight cathode
3
LEDK
LED backlight cathode
4
VCI
Power supply for the analog power
5
IOVCC
Power supply for logic power and I/O circuit
6
RST
Reset signal (low active)
7
TE
Tearing effect output
8
PWM
PWM frequency output for LCD driver control
9
GND
Power ground
10
TDP0
MIPI-DSI data lane 0 positive input
11
TDN0
MIPI-DSI data lane 0 negative input
12
GND
Power ground
13
TDP1
MIPI-DSI data lane 1 positive input
14
TDN1
MIPI-DSI data lane 1 negative input
15
GND
Power ground
16
TCP
MIPI-DSI clock lane positive input
17
TCN
MIPI-DSI clock lane negative input
18
GND
Power ground
19
TDP2
MIPI-DSI data lane 2 positive input
20
TDN2
MIPI-DSI data lane 2 negative input
21
GND
Power ground
22
TDP3
MIPI-DSI data lane 3 positive input
23
TDN3
MIPI-DSI data lane 3 negative input
24
GND
Power ground
25
TP_INT
Interrupt pin for CTP
26
TP_SDA
I2C Data pin for CTP
27
TP_SCL
I2C Clock pin for CTP
28
TP_RESET
Reset pin for TP
29
TP_VCI
Power supply for CTP
30
TP_IOVCC
I/O power for CTP
Frequently Asked Questions
What is the resolution and shape of this display?
The H040R-30MB-A1 is a unique circular 4-inch TFT LCD with a high-definition resolution of 720×720 pixels.
What type of interface does this circular LCD use?
This module utilizes a MIPI 30-pin interface, which is ideal for high-speed data transmission in modern electronic devices.
Can I use this screen in extreme temperature environments?
Yes, it is designed for industrial durability with an operating temperature range of -20℃ to +70℃ and storage range of -25℃ to +75℃.
Does it support touch functionality?
The standard model comes without touch, but a capacitive touch screen (CTP) is optionally available based on your project requirements.
What are the main applications for a 4-inch circular display?
It is widely used in automotive dashboards, smart home central controllers, smart door locks, and professional medical or industrial instruments.
What is the viewing angle of this IPS panel?
Thanks to the IPS technology, this display offers a "Full Viewing Angle" (All direction), ensuring clear visibility from any position.
Xunrui Display
