What sizes of Large E-Ink Displays and Spectra 6 Photo Frames do you offer for OEM/ODM?

We offer three turnkey finished E Ink Spectra 6 full-color frames: 31.5-inch (YT-31EPF, 2560×1440 16:9 QHD with VESA mount & optional 4G LTE), 13.3-inch (YT-13EPF, 1600×1200 4:3 with Wi-Fi 6 & IKEA frame compatibility), and 10.0-inch (YT-10EPF, 1600×1200 200 PPI 10-tone palette). We also supply PCBA + panel development kits in 13.3", 7.3", 4.0", and 3.6".

How long does the battery last on your cordless E-Ink displays?

Because E-Ink only consumes power during screen updates and our RTOS firmware uses aggressive deep-sleep management, the 31.5" YT-31EPF (10,000 mAh battery) runs for over 2 years on a single charge at 1 refresh per day with Wi-Fi off. The 13.3" YT-13EPF (5,000 mAh) and 10" YT-10EPF (3,000 mAh) both achieve over 1 year of cordless playback at 1 refresh per day.

How does the Inkprink AI Art generation workflow operate in the companion app?

Users pick an art style from the gallery, enter a text prompt, use voice dictation, or upload reference photos. The app generates gallery-grade 1600×1200 artwork, applies Spectra 6 color dithering, and pushes the image wirelessly to the E-Ink frame.

Do we need to write our own E-Ink Spectra 6 color dithering algorithms?

No. Our firmware includes built-in local JPEG/PNG/BMP image processing and Spectra 6 color dithering on the device and companion app. Your team or end users can upload standard JPEG images directly.

How do you prevent E-Ink microcapsule aging or image ghosting over long static periods?

Our firmware features an Automatic Particle Refresh Maintenance mechanism. When a static artwork remains unchanged for 72 hours, the frame automatically performs a refresh cycle to maintain pigment activity and prevent ghosting.

E INK SPECTRA™ 6 VOLLFARBE · 3,6" BIS 31,5" OEM-KOMPLETTLÖSUNGEN

Große E-Ink-Displays & Spectra 6™ KI-Kunstrahmen OEM/ODM10", 13,3" & 31,5" kabellose ePaper-Rahmen, Digital Signage & OEM-Kits

Bedienen Sie den Einzelhandels- und Gewerbemarkt mit papierähnlichen E Ink Spectra 6 Vollfarbdisplays: bis zu 2+ Jahre Akkulaufzeit, Wi-Fi 6 / 4G LTE, IKEA- & VESA-kompatibel sowie White-Label KI-Kunst-App.

Größen- & Laufzeit-Konfigurator Inkprink™ KI-Kunst-Flow ansehen Konfigurieren & Muster anfordern

10", 13.3" & 31.5" Finished Frames + 3.6"–13.3" Modules

1 to 2+ Years Cordless Battery Life (3,000–10,000 mAh)

Inkprink™ AI Text / Voice / Ref-Image Art Pipeline

On-Device JPEG Dithering + White-Label App & Mini Program

Inkprink™ AI Paint App (lib/inkprink/)

Flutter · MQTT · COS

eink_create_view.dartPOST /api/app/business/ai/get_styles

All (First)Ink WashImpressionistUkiyo-e

🎨 Spectra 6 Oil

Monet Impressionism

stylePrompt + defaultPrompt

🏔️东方水墨

Minimalist Woodblock

stylePrompt + defaultPrompt

Single batch fetch of all styles with zero-latency client-side category tabs ("All" pinned first). 2-column cards carry name, cover, description, stylePrompt & defaultPrompt.

White-Label App + WeChat Mini ProgramFull Code Flow ↓

E Ink Spectra™ 6 Full-Color Frame Lineup (10" / 13.3" / 31.5")

Zero Glare · Paper-Like · 1–2+ Yr Battery

13.3" & 31.5" E-Ink Spectra 6 Full-Color AI Art Frame OEM/ODM

YT-31EPF · 31.5"2560 × 1440 (QHD)

31.5" Large E-Ink Signage & Gallery Poster Frame

10000mAh93 PPIVESA

YT-13EPF · 13.3"1600 × 1200 (UXGA)

13.3" E-Ink Spectra 6 AI Art & Photo Frame

5000mAh150 PPIIKEA

YT-10EPF · 10"1600 × 1200 (UXGA)

10.0" 200 PPI High-Density Spectra 6 Photo Frame

3000mAh200 PPIIKEA

Also available as Low-Power SoC Bare Panel Kits: 13.3" QSPI / 7.3" SPI / 4.0" SPI / 3.6" SPIView 13.3" Catalog Entry →

INTERACTIVE HARDWARE & POWER CONFIGURATOR

Online E-Ink Size, Interface & Battery Life Selector

Filter across our 3 turnkey finished ePaper frames (10" / 13.3" / 31.5") and 4 E Ink Spectra 6 module kits (3.6" / 4.0" / 7.3" / 13.3"), simulate battery life, and lock your BOM for quotation.

STEP 1 · SELECT FORM FACTOR & DISPLAY SIZE (CLICK TO SELECT)

A. Turnkey Finished ePaper Frames & Signage (Battery + Housing + RTOS + App)

B. E Ink Spectra 6 Bare Panel + Low-Power SoC PCBA Dev Kits (For Custom Enclosures)

STEP 2 · REFRESH FREQUENCY & WAKE-UP POWER SIMULATOR

Daily Screen Refreshes

Sleep & Wake Strategy

LIVE CONFIGURATION SUMMARYSample & OEM Ready

Selected Model / Kit

YT-31EPF (31.5-inch Spectra 6 Signage Frame)

Resolution & PPI

2560 × 1440 (93 PPI)

Battery Capacity

10,000 mAh LiPo

Interface & Wireless Bus

Wi-Fi 2.4G + BT 5.0 + Optional 4G LTE

Mounting & Frame Compatibility

VESA Wall Mount

Estimated Single-Charge Runtime12s–18s Refresh

~24+ Months (750 Days)

* Includes 72h auto particle refresh care to prevent E-Ink aging

INKPRINK™ AI ART ENGINE

Turnkey AI E-Ink Art Generation: Text, Voice & Reference Image to ePaper

Built into our white-label companion app, our production-ready AI Painting pipeline turns user prompts, voice dictation, and family photos into gallery-grade 1600×1200 E-Ink artwork via async MQTT push.

INKPRINK END-TO-END FLOW (Home openCreate → Style Gallery → AI Paint [Text/Voice/2x Ref] → Async Task → MQTT Push → Crop → setCurrentImage)

1. E-Ink Home
openCreate() :68

→

2. Style Gallery (2-Col)
.../ai/get_styles

→

3. AI Paint Studio
Prompt / Voice / 2x COS Ref

→

4. Submit Generation
.../ai/text_to_image

→

5. MQTT Event Push
aiImageDoneEvents (120s)

→

6. Dio Download & Crop
setCurrentImage

STEP 01eink_home_view.dart:68 · openCreate()

Home Entry & Device Write-Readiness Check

User taps "Create (创作)" on the E-Ink device home screen in the companion app.

✓Entry method `openCreate()` in `eink_home_view.dart:68` first verifies whether the target E-Ink device is connected and writable before entering the creation studio.
✓Once the artwork is generated and cropped, the local image path is returned and applied directly to the home view via `setCurrentImage`.

STEP 02eink_create_view.dart · POST /api/app/business/ai/get_styles

Style Gallery & Instant Client-Side Filtering

Fetches all artistic style presets in a single request and renders a two-column visual card grid.

✓Calls `POST /api/app/business/ai/get_styles` once to retrieve the complete style catalog; category tab filtering is executed client-side with "All (全部)" pinned first for zero latency.
✓Each style payload includes: Name, Cover Image, Description, `stylePrompt` (style modifier), `defaultPrompt` (fallback prompt), and Category.
✓Displayed in a 2-column card layout; tapping any style navigates directly into the AI Paint Studio.

STEP 03eink_ai_paint_view.dart · COS aiDrawingReference

Multimodal Prompt, Voice & 2-Image COS Reference

Text-to-Image core with automatic defaultPrompt fallback, Voice Input, and up to 2 Reference Images.

✓Prompt Handling: Automatically pre-fills the selected style’s `defaultPrompt` on page open; also uses `defaultPrompt` as fallback if the user clears or leaves input empty.
✓Voice Input: Built-in speech-to-text dictation so users can speak their scene idea hands-free.
✓Reference Images (Img2Img): Select up to 2 photos from album → uploaded to COS (`aiDrawingReference` scene) using family `rootId`, device `id`, and `productId`. When reference images are attached, `stylePrompt` is sent as `""` (empty string) and style is matched strictly via `styleId`.

STEP 04eink_ai_paint_controller.dart · POST /api/app/business/ai/text_to_image

Auto Aspect-Ratio Canvas & Async Task Submission

Adapts canvas to 1600×1200 or 1200×1600 and submits an asynchronous generation job.

✓Canvas Size: Defaults to `1600*1200` (Landscape 4:3 native to 13.3" & 10" Spectra 6). Automatically switches to `1200*1600` (Portrait 3:4) if the frame aspect ratio is `< 1`.
✓Submits `POST /api/app/business/ai/text_to_image` with parameters: `styleId`, `stylePrompt`, `prompt`, `size`, and optional `refImages`.
✓Asynchronous execution: immediately returns a `taskId` without blocking the UI thread.

STEP 05EInkMqttService().aiImageDoneEvents · taskId Match

Real-Time MQTT Event Push (120s Window)

Listens for cloud completion events pushed over MQTT without wasteful polling loops.

✓Subscribes to `EInkMqttService().aiImageDoneEvents` and matches incoming payloads against the active `taskId`.
✓Status `2` = Generation Succeeded; Status `3` = Generation Failed. Maximum wait timeout is 120 seconds before alerting failure.
✓While a polling endpoint (`get_task`) exists in the API layer, the production view relies purely on event-driven MQTT push for instant response.

STEP 06inkprink_ai_generated/ · eink_image_crop_view.dart

Dio Download, Interactive Crop & E-Ink Frame Sync

Downloads artwork to local temp cache, opens precision cropper, and pushes to the ePaper screen.

✓Downloads the generated artwork via `Dio` to temporary directory `inkprink_ai_generated/`.
✓Opens `eink_image_crop_view.dart` for pixel-accurate framing, then returns the cropped file to the home screen via `setCurrentImage`.
✓Developer Fallback: When mock mode is enabled and no reference image is attached, generation errors automatically fall back to a bundled local asset image for rapid UI/hardware debugging.

LOW-POWER HARDWARE, FIRMWARE & HOST SOFTWARE ARCHITECTURE

Complete Color ePaper Development & Mass-Production Stack

From ultra-low-power circuitry and on-device Spectra 6 dithering algorithms to 72-hour automatic particle care and unbranded iOS/Android/WeChat host apps.

01 · Low-Power SoC HARDWARE & ULTRA-LOW POWER

Cordless LiPo, Buttonless Wake, 32GB TF & RTC

• IoT LAN/Cloud Sync: Receives artwork from smartphones over LAN or Cloud
• Cordless & Deep Sleep: Integrated 3.7V LiPo PMIC + deep-sleep firmware for 1–2+ year battery life
• Buttonless Proximity Wake: Wake and operate the frame directly via smartphone at close range
• 32GB TF + RTC + Buzzer: Stores tens of thousands of images locally; built-in RTC timer & acoustic buzzer

02 · DEVICE CONNECTION & MULTI-WIFI MANAGEMENT

Multi-Hotspot Roaming, Sleep Policy & OTA

• Direct Smartphone Wake: Select device on phone to wake and assign target Wi-Fi network
• Multi-Wi-Fi Auto-Select: Store multiple Wi-Fi credentials; firmware auto-connects to strongest AP
• Custom Sleep Policy: Tailor sleep schedules per deployment scenario to balance power & speed
• Custom Name & OTA: User-defined device naming and over-the-air firmware updates

03 · ON-DEVICE IMAGE DITHERING & RAW API

Zero-Effort Local JPEG Dithering + Raw Upload

• Single & Batch Upload: Capture via camera or select from gallery for single or batch transfer
• On-Device JPEG Processing: Accepts standard JPEG/PNG/BMP and performs Spectra 6 color mapping & dithering directly on-device
• Pre-Processed Raw Buffer Support: Open format specification provided for teams preferring host-side custom dithering

04 · ALBUM & SCHEDULED PLAYLIST ENGINE

Interval Rotation, Time-of-Day Schedules & 3 Modes

• Album CRUD: Create/delete albums, list all albums, and query specific album contents
• Playlist Scheduling: Supports both Interval Rotation and Exact Time-of-Day Scheduled Playlists
• 3 Playback Policies: Configure Single Static Artwork, Album Interval Slideshow, or Scheduled Playlist

05 · 72-HOUR E-INK PARTICLE CARE MECHANISM

Automatic 72h Screen Refresh Prevents Aging

To protect E-Ink microcapsule pigment activity and prevent ghosting or panel aging during long static displays, the firmware includes an automatic maintenance refresh cycle.

✓ Default Interval: 72 Hours (User-adjustable inside Companion App)

06 · UNBRANDED HOST APP & WECHAT MINI PROGRAM

Turnkey White-Label Delivery or Open API Integration

• iOS & Android Companion App: Full firmware control + Inkprink AI Art studio; neutral unbranded UI ready for immediate customer delivery
• WeChat Mini Program: Instant Bluetooth/Wi-Fi pairing and photo push for trade shows & rapid demos

FULL TECHNICAL DATASHEET COMPARISON

Turnkey Spectra 6 Photo Frames & Signage Specifications (YT-31EPF / YT-13EPF / YT-10EPF)

Production-ready hardware models engineered for private-label retail brands, commercial digital signage operators, and interior art galleries.

Specification	31.5" ePaper Frame Model: YT-31EPF	13.3" ePaper Frame Model: YT-13EPF	10.0" ePaper Frame Model: YT-10EPF
Display Panel	31.5" E Ink Spectra™ 6 · 93 PPI	13.3" E Ink Spectra™ 6 · 150 PPI	10.0" E Ink Spectra™ 6 · 200 PPI
Resolution & Ratio	2560 × 1440 (16:9 QHD)	1600 × 1200 (4:3 UXGA)	1600 × 1200 (4:3 UXGA)
Color Palette	Red, Yellow, Blue, White, Green, Black	Red, Yellow, Blue, White, Green, Black	Red, Yellow, Blue, White, Green, Dark Green, Black, Orange, Cyan, Gray (10-Tone)
Wi-Fi & Cellular	2.4GHz (802.11b/g/n) + Optional 4G LTE	2.4GHz & 5GHz Wi-Fi 6 (802.11ax)	2.4GHz & 5GHz Wi-Fi 6 (802.11ax)
Bluetooth	Bluetooth 5.0	Bluetooth 5.0	Bluetooth 5.0
Battery Capacity	10,000 mAh	5,000 mAh	3,000 mAh
Single-Charge Play Time	Over 2 Years (1 refresh/day, Wi-Fi off)	Over 1 Year (1 refresh/day)	Over 1 Year (1 refresh/day)
Mounting & Frame	VESA Mount Support	IKEA Frame Compatible	IKEA Frame Compatible
Storage & Ports	TF Card (up to 32GB) + USB Type-C (Data/Charging)	TF Card (up to 32GB) + USB Type-C (Data/Charging)	TF Card (up to 32GB) + USB Type-C (Data/Charging)
System OS & Formats	RTOS · JPG, PNG, BMP	RTOS · JPG, PNG, BMP + Inkprink™ AI Art	RTOS · JPG, PNG, BMP + Inkprink™ AI Art
Refresh Mode & Speed	TF Card, LAN, Cloud · 12s–18s	TF Card, LAN, Cloud · 12s–18s	TF Card, LAN, Cloud · 12s–18s
Working / Storage Temp	0°C ~ 50°C / -25°C ~ 60°C	0°C ~ 50°C / -25°C ~ 60°C	0°C ~ 50°C / -25°C ~ 60°C

E Ink Spectra™ 6 Bare Panel + Low-Power SoC PCBA Development Kits

Ideal for OEMs designing custom industrial enclosures using our pre-validated Low-Power SoC driver board & firmware

Low-Power SoC · QSPI / SPI · 3.7V LiPo

13.3" E6QSPI

P/N: EL133UF1

Resolution: 1600 × 1200

Density: 150 PPI

Status: MP (Mass Production)

AI Art Frames, Smart Home Wall Dashboards, ePaper Monitors

7.3" E6SPI

P/N: EL073TF1

Resolution: 800 × 480

Density: 127 PPI

Status: MP (Mass Production)

Meeting Room Door Signs, Desk Photo Frames, Retail Shelf Signage

4.0" E6SPI

P/N: EL040EF1

Resolution: 400 × 600

Density: 180 PPI

Status: MP (Mass Production)

Smart Desk Cards, Conference Badges, ESL & IoT Status Panels

3.6" E6SPI

P/N: EL036MF1

Resolution: 400 × 600

Density: 200 PPI

Status: MP Ready (2025/Q2+)

Compact 200 PPI Badges, Portable Art Cards, Smart Home Controls

DIRECT FACTORY & E-INK ENGINEERING DESK

E-Ink-Muster, SDK-Dokumentation & OEM-Angebot anfordern

Your selected model and power configuration from the selector above are automatically attached below. Our Shenzhen Nanshan engineering desk replies within 1 business day.