1.5-inch Flexible/Bendable OLED Display 120×240 SPI/MIPI
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5.1-inch flexible AMOLED display showing an image while bent to demonstrate flexibility
5.1-inch Flexible/Bendable OLED Display 720×1520 MIPI DSI $205.27piece
PO139FN01F 1.39-inch circular AMOLED display module showing a landscape image on the round screen with black bezel on white background
PO139FN01F 1.39-inch circular AMOLED display module with FPC connector on white background
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PO139FN01F 1.39-inch circular AMOLED display module showing a landscape image on the round screen with black bezel on white background
PO139FN01F 1.39-inch circular AMOLED display module with FPC connector on white background

1.39-inch Flexible/Bendable OLED Display 400×400 MIPI

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$44.10piece

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Description

Model: PO139FN01F

The 1.39-inch Flexible/Bendable LTPS-AMOLED Module delivers vivid, high-contrast visuals in a true round form factor, featuring a 400×400 resolution and 16.7M colors (24-bit) for sharp UI rendering and smooth gradients. With typ. 300 cd/m² luminance and wide viewing performance (80° L/R/U/D, CR > 1600), it maintains clear readability across different angles. Using a MIPI (CMD mode) interface and supporting a 60 Hz normal refresh operation, it’s ideal for compact, design-forward devices that need a clean circular display. Its slim outline of 38.6 × 40.5 × 0.7 mm (typ., w/o FPCa) and Ø35.4 mm active area simplify integration, while the −20 to +60°C operating range supports dependable real-world use.

Application

Smart Watches | Wearable Devices | Round UI Dials | IoT Controllers | Portable Instruments | Compact Embedded Displays

Customized Options

FPC  | Touch Panel | Cover Glass | Controller Board | Brightness

Mechanical outline drawing of PO139FN01F 1.39-inch circular AMOLED display showing dimensions and active area (Ø35.4 mm)
PO139FN01F 1.39-inch circular AMOLED display connected to HDMI controller board via FPC ribbon cable

HDMI Controller Board for PO139FN01F Flexible/Bendable OLED Evaluation

Gesight provides an HDMI controller board tailored for the PO139FN01F demo setup, giving engineers a fast, practical way to bring the OLED up on the bench without writing display drivers first. With standard HDMI video input, you can quickly verify 400×400 UI rendering, check text and icon edge clarity, and review gradient smoothness and overall color performance in real time—ideal for early-stage concept validation and demo builds.

For development and integration, the HDMI board acts as a stable bridge between a PC/video source and the module’s MIPI (CMD mode) interface, helping reduce bring-up risk and iteration time. It’s especially useful when tuning round dial layouts, evaluating readability at different angles, and confirming mechanical fit with the module’s compact form factor before moving to the final system architecture.

Gesight can also support board-level setup guidance and matching connection solutions for rapid evaluation, making it easier to transition from prototype testing to product integration.

Dynamic Image Switching Test for flexible/bendable OLED Validation

This GIF showcases the PO139FN01F 1.39-inch Flexible/Bendable OLED running a rapid content-switching test, cycling through different images to verify stable refresh behavior and consistent rendering on a round display. It helps quickly confirm color transitions, gradient smoothness, and edge clarity within the circular active area—useful for early-stage UI demo tuning and basic reliability checks during bring-up.

1.39-inch circular AMOLED switching between different images during display test
Specifications
Size

1.39 inch
Pixels

400 × 400
Interface

Brightness

300 cd/m² (typ), 250 cd/m² (min)
Manufacturer

Gesight
Display Type

AMOLED

,

Flexible OLED
Display Mode

AMOLED (LTPS-AMOLED)
Color Depth

Refresh Rate

60 Hz
Viewing Angle Range

Top 80° / Bottom 80° / Left 80° / Right 80° (CR > 1600)
Outline L*W*H

38.6 (H) × 40.5 (V) × 0.7 typ, 0.8 max (T), w/o FPCa (mm)
Active Area L*W

Ø35.4 mm (Diameter)
Orientation

Supply Voltage

VVCI: 2.7–3.6 V (typ 2.8 V); VDDIO: 1.65–3.3 V (typ 1.8 V); ELVDD: 4.55–4.65 V (typ 4.6 V); ELVSS: −2.35 to −2.45 V (typ −2.4 V)
Consumption

Current (typ) at VDDIO=1.8 V, VCI=2.8
Operating Temperarure

−30 to +70 °C
Storage Temperature

−30 to +70 °C
Bezel Area (mm)

–
Aspect Ratio

1:1 (400×400)
Connection Type

FPCa; FPCA recommended connector: Molex 504248-2410 (24 pins); Main board recommended connector: Molex 504208-2410
IC package

COF
Touch Panel

Pixel Pitch

0.0885 (H) × 0.0885 (V) mm
Sunlight Readable

–
Model

PO139FN01F
PPI ( pixels per inch )

287 PPI
Application

–
Pins Description
Pin No. Symbol I/O Function
1 GND P GND
2 RESX I Device reset signal (0 : Enable ; 1: Disable )
3 HSSI_D0_N I/O MIPI data negative signal
4 SWIRE O SWIRE signal for PWR IC control
5 HSSI_D0_P I/O MIPI data positive signal
6 MTP_PWR P MTP (need to indicate to connect GND or NC)
7 GND P GND
8 TE O Vsync (vertical sync) signal output from panel to avoid tearing effect
9 HSSI_CLK_N I MIPI negative clock signal
10 GND P GND
11 HSSI_CLK_P I MIPI positive clock signal
12 GND P GND
13 GND P GND
14 GND P GND
15 VDDIO P Power supply for Interface system
16 VCI P Power supply for analog
17 GND P GND
18 GND P GND
19 ELVSS P AMOLED power Negative
20 ELVDD P AMOLED power positive
21 ELVSS P AMOLED power Negative
22 ELVDD P AMOLED power positive
23 ELVSS P AMOLED power Negative
24 ELVDD P AMOLED power positive
Electrical Characteristics

Electrical Characteristics(Operating Conditions, Ta = 25 ± 2°C)

Parameter Symbol Min. Typ. Max. Unit Note
Driver driving voltage VCI 2.7 2.8 3.6 V (1)
Driver driving voltage VDDIO 1.65 1.8 3.3 V (1)
OLED driving voltage ELVDD 4.55 4.6 4.65 V (1)
OLED driving voltage ELVSS -2.35 -2.4 -2.45 V (1)

 

Backlight Specification

Item Specification
Backlight Not applicable — this is a Color OLED / LTPS-AMOLED panel (self-emissive), and the datasheet provides no backlight specification table.

 

 

FAQ

Where can I buy this display？

If you just need a few samples, it`s better to directly on our Aliexpress store, we are 5 stars feedback supplier with 100% Honesty. (The buy link is on the right of the product image)
For bulk orders, it`s better to contact us and get a better price. 

Different displays have different characteristics, just tell Gesight Display your application, and operating environment, Gesight Display will suggest a suitable display for you.

Gesight Display provide HDMI/Type-C controller board or individual demo kit to test.
The pictures of demo kit can be changed by yourself. 

Gesight Display will provide necessary specifications for most LCD/OLED on sale, including,
Display Datasheet
Display Drawing
IC Datasheet
Circuit schematic
For most electronics engineers, our specifications are enough to run the display, and we will provide some assistance.
But Gesight Display is not a school, if customers don`t know the basic knowledge to design circuit boards, we suggest using our controller board to drive the display.

First, you need to check whether this display has On-cell or In-cell touch panel, if has, it only needs to add a cover glass on it. If not, it needs an external touch panel.
(On-cell and In-cell are integrated PCAP touch panels on the display screen)
Because the shape of the cover glass depends on the design of the clients, to avoid infringement of appearance,  most of the developers need different customized touch panels.
Gesight Display can provide a customized touch screen with a low cost of tooling charge.

1. UPS/Fedex/DHL/TNT, the best choice for most clients, 3~7 days to arrive.
2. Aliexpress standard ship, this way is cheap and slow, usually take more than 10 days. Only for samples.
3. For Russian clients, EMS or Aliexpress shipment is better.
4. Any designated logistics are acceptable
 

Most display panels are from giant manufacturers such as BOE, Sharp, LG, EDO, AUO, etc. They have already tested with strict standards.
For OEM products from Panox Display factory, please check the quality test standards.   

The lifetime is different on different images, check the lifetime on datasheet to study it. 

If your Raspberry Pi can support the interface of the display panel, and you know how to program on Raspberry Pi, you can connect to our display.
If you don`t know or don`t want to write a display program on Raspberry Pi, it`s better to get an HDMI controller board from us, and Panox Display will send a config.txt file for reference.
 

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Free convertor board and Connectors

Fast Shipping

Most of our clients are manufacturers purchasing our displays for their applications, who are willing to get samples as soon as possible.

Different products collocations have different package, please confirm the shipping cost with us when place an order.

(4~6 days for most countries and area)

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Specification

Panox Display offers the following specifications for most LCD/OLED products:

  • Display datasheet

  • Mechanical drawing

  • IC datasheet

  • Circuit schematic

Readable Under Sun

Compare to LCD, OLED has many advantages as follows:

Thin Like Paper:More than 50% thinner and lighter than LCD, creating an edgy form factor in style.

Green Power:Clock-mode standby can be up to 60 hours, much lower consumption compare to LCD displays.

"Wow" Effect:High contrast ratio and wide color gamut offer sharp and vivid image, and consistent display from any angle.

OLED Type Structures

        OLED driver as well as two divided into passive (PMOLED) active (AMOLED), which PMOLED simple structure, each pixel is represented by a separate cathode and anode control, no additional driver circuit, but too much control lines restrict its application of high-resolution large screen; AMOLED entire cathode surface electrode via a drive circuit driving the light emitting anode, significantly reducing the number of control lines, it has a low-power, high-resolution, fast response and other characteristics, AMOLED therefore gradually become the mainstream OLED display.

About Us

Gesight is a high-tech company specializing in OLED, LCD displays. Integrated with display marketing and sales, customized LCD OEM manufacturing, driver board development, customized TP, etc.

After six years of effort and development, we have grown up to a certain size, now we have a service team with excellent service quality, professional technical service.

After several years of steady development, Gesight has served hundreds of customers from different places all over the world. Including big companies such as Bosch, Nokia, Garmin, Circuits, and countless small and medium-size companies or electronics DIYers.

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Say No to any bright/dart dots on screen !!
Strict Quality Control


We implement strict quality control through every stage of production and inspection. Each display undergoes rigorous testing to eliminate any pixel defects, including bright, dark, or stuck dots. Our professional QC team uses advanced optical equipment to ensure flawless screen performance, delivering only high-reliability LCD and OLED panels to our customers.

strict quality control

rigorous testing

flawless screen performance

high-reliability

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