3.4-inch Round High Brightness TFT LCD Screen with RGB Interface - China Suppliers & Factory Direct Bulk Order
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The 3.4-inch round TFT LCD represents a significant advancement in display technology, meticulously engineered to thrive in the most challenging outdoor and industrial environments. Setting a new industry benchmark for clarity, its defining feature is a proprietary ultra-high brightness backlight system delivering a remarkable 1100 nits (cd/m²). This exceptional luminosity ensures that the display remains vividly legible, with graphics and data sharply defined even under the intense glare of direct solar radiation — eliminating the common failure point of outdoor devices: a washed-out, unreadable screen.
Beyond sheer brightness, the optical performance is anchored by genuine IPS (In-Plane Switching) technology, ensuring consistent color reproduction and high contrast across an 80-degree viewing cone in all directions. Whether the application requires a glance from an operator standing above or a view from an extreme lateral angle, the display maintains impeccable fidelity without inversion or degradation.
Engineered for resilience, this display operates flawlessly across a wide temperature spectrum from -30°C to +80°C, guaranteeing startup in frigid winter conditions and sustained performance in high-heat enclosures. Its design incorporates robust 8KV ESD protection, providing a critical safeguard against power surges and electrostatic discharge common in industrial settings. The sharp 800×800 resolution on a circular substrate, combined with a high-speed MIPI DSI interface, ensures crisp graphics and efficient data handling.
Ultra-High Brightness
1100 cd/m² backlight ensures full readability under direct sunlight and harsh outdoor lighting conditions.
IPS Wide Viewing Angle
True IPS panel delivers consistent color and contrast at up to 80° from any direction — no inversion or color shift.
Industrial-Grade Durability
8KV ESD protection and a -30°C to +80°C operating range make it ideal for demanding industrial and marine applications.
| ITEM | PARAMETER DESCRIPTION | UNIT |
|---|---|---|
| TFT Series | TFT-H034A04ZJIGCKN40 | |
| Diagonal Size | 3.4" | Inch |
| Resolution | 800×800 | Dot |
| Dimensions | 94.9 × 96.95 × 2.2 | mm |
| Active Area (AA) | 87.6 × 87.6 | mm |
| LCD Type | 3.4" TFT Module | mm |
| Display Viewing Angle | Full View | |
| Aspect Ratio | 1:1 | |
| Backlight Type | LED White | |
| TFT Driver IC | — | |
| Brightness | 1100 cd/m² | cd/m² |
| Operating Temperature | -30 ~ 80℃ | ℃ |
| Storage Temperature | -40 ~ 90℃ | ℃ |
The engineering value proposition of the 3.4-inch round display is built upon several advanced technical pillars. Firstly, its optical engineering is defined by the calibrated 1100-nit backlight, achieved through a high-efficacy LED array and optimized light guide plates to prevent hot spots. This is paired with an IPS panel that guarantees true color performance across an 80-degree viewing radius, ensuring data is interpretable from any mounting angle.
Secondly, the structural and electrical robustness is a core selling point. It is designed to meet rigorous ESD standards with 8KV protection, safeguarding the driver ICs and logic circuits. The wide -30°C to 80°C operating range results from careful component selection, including industrial-grade polarizers and ICs that can withstand thermal expansion and contraction.
The 1100-nit capability provides a multi-faceted advantage that extends beyond simple "readability." The primary advantage is contrast preservation under high ambient light. In a typical indoor display (250–400 nits), sunlight reflecting off the surface creates a "veiling glare" that washes out the image. The high luminance of this display overpowers the reflected ambient light, effectively restoring the contrast ratio to a perceivable level.
This high brightness also offers design flexibility for system integrators. Because the display is already bright enough for direct sun, engineers can avoid costly and bulky mechanical sunshades or hoods. Furthermore, this brightness headroom allows for the integration of optical bonding using optically clear adhesive. While bonding reduces surface reflections, it slightly attenuates backlight transmission; the starting point of 1100 nits ensures the final luminance after bonding still exceeds 800–900 nits, keeping the display perfectly sun-readable while also improving durability and dust protection.
For OEMs, the 3.4-inch round display serves as a robust platform for customization. Common adaptations include the addition of a projected capacitive (PCAP) touch panel, which can be designed with custom cover glass including optical coatings like anti-reflective (AR) or anti-fingerprint (AF). We also offer optical bonding services, which fills the air gap between the cover lens and the sensor, dramatically improving sunlight readability by reducing internal reflections and preventing condensation.
