Understanding the PH3.91-LED Holographic Screen
For buyers researching PH3.91 LED holographic screen specifications, the PH3.91-LED Holographic Screen from Shenzhen Showho, marketed overseas under the Whaley-LED brand, represents a dedicated model within the company's broader LED holographic screen lineup. This product line is positioned as a transparent display screen that is fixed without a frame, built with PCB hollow mesh circuits, and designed for direct attachment to glass surfaces. It directly addresses a common industry pain point: conventional LED displays are often heavy, thick, and block light, which makes them unsuitable for glass curtain walls, shop windows, and other creative installation scenarios that require a display to remain transparent, light, and adaptable to curved surfaces.
Shenzhen Showho, founded in 2015 and headquartered in Shenzhen, China, built this product family around an integrated approach to research and development, structural design, and in-house manufacturing. In 2025, the company established an overseas business unit and launched the Whaley-LED brand to serve overseas commercial display and engineering projects through OEM and ODM services, extending a model originally focused on the domestic high-end rental display market.
Core Technical Specifications of the PH3.91 Model
The PH3.91-LED holographic screen is defined by a specific set of engineering parameters that distinguish it within the wider film screen series:
- Pixel Pitch: 3.91 mm x 3.91 mm
- Pixel Density: 65,536 dots/m2
- Display Thickness: 1-3 mm
- LED Lamp: SMD1515/2121, lamp-driver integrated
- Module Size: front adhesive 1500 mm x 250 mm, 1000 mm x 250 mm, 2000 mm x 250 mm; back adhesive 1500 mm x 250 mm, 1200 mm x 250 mm, 2000 mm x 250 mm
- Electrical Performance: average 200 W/m2; max 800 W/m²
- Screen Weight: less than 3 g/m²
- Switching Power Supply: Yuanchi
- Visual Permeability: greater than 80%
- IP Rating: better than IP45
- Average Lifespan: more than 100,000 operating hours
- Power Requirement: 220 V +/- 10%; AC 50 Hz, three-phase five-wire
- Screen Brightness: white balance 800-2000 cd/m², with automatic and manual adjustment based on ambient brightness
- Viewing Distance: 4 m to 150 m
- Viewing Angle: horizontal 160 degrees, vertical 140 degrees
- Gray Level: at least 16 bit
- White Field Color Temperature: 5500 K to 15000 K, adjustable
- Drive Mode: static
- Attenuation Rate: less than 0.05% within 2 years
- Refresh Rate: greater than 3840 Hz
- Frame Change Rate: greater than 60 Hz
- MTBF: greater than 10,000 hours
- Dead Pixel Rate: less than 1 in 10,000, discrete distribution
- Control System: Colorlight / NovaStar, synchronous/asynchronous
- Operating Environment: -10 to +65 degrees C; 10%-90% RH
- Storage Environment: -40 to +85 degrees C; 10%-90% RH
These figures place the PH3.91 model within a series that, across all pixel pitch options from 2.5 mm to 50 mm, maintains screen thickness below 2 mm, screen weight under 3 kg/m2, sensory permeability over 80%, refresh rate over 3840 Hz, frame change rate over 60 Hz, gray level of at least 16 bit, IP rating better than IP45, average lifespan over 100,000 operating hours, MTBF over 10,000 hours, and a dead pixel rate of less than 1 in 10,000 with discrete distribution.
Differentiated Technical Foundation
What underpins the PH3.91 specification sheet is Shenzhen Showho's self-managed technology chain, which spans IC bare chip architecture, LED bracket design, LED packaging, and electronic circuit design. The company holds dozens of invention and utility model patents related to screens, and the PH3.91 model uses a self-developed IC with strong driving performance, paired with a lamp-driver integrated LED design and a PCB board with hollow mesh circuit design. This combination allows the screen to stay frameless, thin, and visually light while supporting the high refresh rate and low dead pixel rate figures listed above.
The broader LED holographic screen series, of which PH3.91 is one model, supports flexible installation: it can be bent, cut, affixed to glass, hung, or fixed, with curved installation available at a radius greater than R > 600 mm for corner screens, cylindrical surfaces, and S-shaped inner and outer arcs. Splice height is described as up to 8 m in one description, with a later note indicating up to 6 m without power supply in the middle, and one-side length not limited.
Installation and Deployment Options
The PH3.91-LED holographic screen supports multiple deployment methods consistent with the rest of the film screen line: adhesive mounting directly onto glass, hanging display, and fixed installation, along with support for arbitrary cutting and bending. These options reflect the delivery model used across Shenzhen Showho's transparent display products, which are customized through OEM and ODM services to match specific project requirements for overseas commercial display and engineering projects.
Industry Applications
The LED holographic screen series, including the PH3.91 model, is adapted for commercial display windows, commercial curtain walls, exhibition halls, creative displays, entertainment and cultural tourism venues, automobile 4S stores, airport concourses, building curtain walls, and commercial centers. The combination of high visual permeability, light weight, and flexible mounting methods makes this model relevant wherever a display needs to coexist with natural light and glass architecture rather than obstruct it.
Summary
Within the PH3.91-LED holographic screen specification set, Shenzhen Showho and its Whaley-LED brand demonstrate a technically detailed approach to transparent display engineering: a 3.91 mm pixel pitch, 65,536 dots/m² density, sub-3 mm display thickness, lamp-driver integrated SMD1515/2121 LEDs, visual permeability above 80%, and a full set of electrical, environmental, and control system parameters documented for buyers evaluating transparent LED screens for glass-facing and engineering-project deployments. These specifications, combined with the company's self-managed IC and packaging capabilities and its OEM/ODM delivery model, provide a complete technical reference point for anyone comparing transparent LED screen options at the PH3.91 pixel pitch.
https://www.whaley-led.com/
Shenzhen Showho (Whaley-LED)