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4 Inch Square Touch Display | 480×480 Optical Bonding

Name: 4 Inch Square Touch Display | 480×480 Optical Bonding
Brand: FANNAL
Rating: 5.0 (63 reviews)

4-inch square capacitive touch display with 480×480 resolution, 1:1 format, G+G structure, optical bonding, 7H cover glass, and -20°C to +70°C operation.

Model:
FN0400T013A
Brand:
FANNAL
Size(inch):
4
Cover OD (mm):
96.6(H) x 96.6(V) x 5.0(T)
Operation Temp(℃):
-20~70
Storage Temp(℃):
-30~80
TP VA (mm):
72.46(H) x 70.78(V)
Structure:
G+G
Resolution:
480*480
Display Interface:
MIPI
TP Interface:
IIC
Brightness(cd/m²):
360

Quantity:
Availability:





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Product Description

Drawing & Specifications

Applications

Customizations

FAQ

The 4-inch square capacitive touch display combines a 480 × 480 resolution, G+G touch structure, and OCA optical bonding in a compact 1:1 format. Its square form factor provides more usable space for interfaces where a conventional rectangular display may not fit the mechanical layout.

With a chemically strengthened 2.0 mm cover glass, 7H minimum surface hardness, and a touch transmittance of 85%, the display is designed for clear and responsive touch interaction. The module supports MIPI display and IIC touch interfaces, with 5-point finger touch and an operating temperature range of -20°C to +70°C.

Its compact size and square format make it suitable for embedded control interfaces, compact equipment, instrumentation, and other applications requiring a non-standard display shape.

Features

4-inch square display with a 480 × 480 resolution and 1:1 format
Compact 96.6 × 96.6 mm outline, suitable for space-constrained equipment
G+G capacitive touch structure with 5-point finger touch
OCA optical bonding between the display and touch module
2.0 mm chemically strengthened cover glass with ≥7H surface hardness
85% minimum touch transmittance and 80% uniformity
MIPI display interface and IIC touch interface
-20°C to +70°C operating temperature for a wider range of embedded equipment
360 cd/m² typical TPM luminance, suitable for indoor and controlled-light environments

Drawing

Specifications

Item	Specification	Unit
Screen Size	4.0	Inch
Product Structure	G+G
Resolution	480*480
Outline Dimension	96.6(H) x 96.6(V) x 5.0(T)	mm
View Area	72.46(H) x 70.78(V)	mm
Surface Hardness	7H Min.
Touch Transmittance	85	%
Uniformity	80	%
Touch Brand	Microchip
No. of Touch	5
Touch Mode	Finger
Touch Interface	IIC
IIC Address	0x4A
Cover Thickness	2.0	mm
Sensor Thickness	0.55	mm
Channels of Sensor	12*12
Unmarked Tolerance	±0.3/±1°
Bonding Type	Optical bonding
Bonding Material	OCA
Cover Enhancement Method	Chemical strengthening
Operating Temperature	-20~+70	°C
Storage Temperature	-30~+80	°C
Humidity	10%~90%	RH
TFT Part Number	FN0400D010A	pcs
TPM Surface Luminance	360 (typ.) / 280 (min.)	cd/m²
TFT Interface	MIPI
Power Supply of TFT	2.8	V
Power Supply of Touch	3.3	V
Environmental Requirements	RoHS-2.0, REACH

Applications

Compact industrial equipment — control interfaces where panel space is limited
Embedded systems — square-format HMIs integrated into custom enclosures
Instrumentation — compact measurement and monitoring interfaces
Control panels — equipment requiring a balanced square user interface
Smart devices and appliances — applications with a non-standard display layout
Portable equipment — compact interfaces where display dimensions are constrained

Automotive Display

Kiosk touch screen

Railway display

E-bike display

Outdoor display

Industrial display

Medical touch screen

Gym-screen

Engineering Plant

Motorcycle display

Vending Machine Display

Embedded display

Customizations

To meet diverse integration needs, we offer extensive customisation for you, including:

● Custom Display Options

LCD Panel

• Size range: 1.77" to 15.6"
• Trusted panel partners: BOE, INNOLUX, JDI, Hannstar, CTC, TCL, and TIANMA.
• Panel types: IPS / TN / LTPS
• Operation Temperature: Industrial (-20 ~ 70°C), Automotive (-30 ~ 85°C)

Interface Design

• Tailored shape, length, and PIN definitions for full compatibility.
• EMI shielding and circuit optimisation.
• Supports multiple conversions: SPI, MCU, RGB, MIPI, LVDS, EDP

Back Light

• Module material options: metal/plastic/metal–plastic integration
• High brightness up to 30,000 cd/m², ideal for outdoor or industrial use.
• Long lifetime up to 50,000 hours.

Driver Board

• Options: RGB / VGA / HDMI / LVDS / DVI / Type-C
• Fully compatible with custom TFT and LCD modules.

• Optimised design for stable image transmission and performance.

● Custom Touchscreen Options

Touch Sensor

• Available Sizes: Up to 65"

• Structure Options: G+G, G+F+F, designed for industrial and automotive applications

• Touch Functions: Supports multi-touch, waterproof, glove touch, passive pen, gesture & palm rejection

• Operating Temperature:

Industrial Grade: –20°C ~ +70°C

Automotive Grade: –30°C ~ +85°

Touch Controller (IC)

• Touch tuning and firmware optimization provided by FANNAL (in-house FW design)
• Trusted IC partners: EETI, ILITEK, GOODiX, FocalTech, Cypress, Microchip(FANNAL's Design Partner)
• High Reliability: Excellent anti-interference and long-term stability
• EMC Design: Full electromagnetic compatibility engineering to meet EMI/RFI and industrial standards

Cover Lens

• Material Options:

Glass: 0.55mm–10.0mm
PMMA: 0.5mm–3.0mm
PC: 0.1mm–1.0mm
• Custom Design: CNC, Hot bending, 3D & 2.5D cover glass, ceramic printing, and PMMA integration
• Surface Treatments:
3A: AG / AR / AF
Anti-Microbial / Anti-Explosion

● Custom Optical Bonding Service

Optical Bonding	Size Range	Notes
OCA	Up to 15.6”	Two fully automated production lines for high-volume manufacturing
LOCA / OCR	Up to 32”	Excellent for high contrast and durability
Silicone	Up to 32”	Ideal for rugged, large-size industrial applications

FAQ

1. What is the advantage of a square 480 × 480 display?

A square 480 × 480 display provides a 1:1 interface area rather than the wider format of a conventional rectangular display. This can simplify mechanical integration and UI design for equipment with a compact or square front panel.

2. Does the display use optical bonding?

Yes. The display uses OCA optical bonding, which removes the conventional air gap between the display and touch layers. This can reduce internal reflections and improve visual integration between the display and cover glass.

3. What host interfaces are required?

The display uses a MIPI interface, while the capacitive touch function uses IIC. The host system therefore needs to support both interfaces or use an appropriate interface solution during integration.

4. Is this display suitable for outdoor use?

The module has a typical luminance of 360 cd/m², so it is better suited to indoor or controlled-light environments. For direct sunlight applications, a higher-brightness display and additional optical treatment may be required.

5. What should be considered when integrating this display into equipment?

Mechanical clearance, mounting method, MIPI signal compatibility, IIC communication, power requirements, and the 96.6 × 96.6 mm module outline should be checked before integration. The square form factor can be particularly useful when the available panel space is close to a 1:1 layout.

6. Can the touch display be customized for a different application?

Yes. Depending on project requirements, touch cover glass, mechanical dimensions, optical bonding, touch configuration, and other display or touch parameters can be evaluated as part of a custom display project.