Our 0.91 inch range currently covers 3 part numbers at 128x32, driven by SSD1306 over I2C, or parallel / SPI / I2C, in white. It is a wide bar format: 30 mm across but only 11.5 mm tall, sized for one or two lines of text.
Part numbers in this size
Mechanical details
The standard build measures 30.0 x 11.5 x 1.3 mm with an active area of 22.38 x 5.58 mm, which is the number you need for the bezel cut-out. Panel thickness stays around 1.2 to 1.4 mm for the monochrome builds, so the module sits almost flush behind the cover window.
Interface and driver
These modules run on the SSD1306, and the interface options are I2C, or parallel / SPI / I2C. On the I2C builds only four pins are needed (VCC, GND, SCL, SDA), which is why this size is common in Arduino, ESP32 and STM32 projects as well as in production hardware. The parallel builds suit hosts that already drive a character display and need a drop-in upgrade.
Where this size fits
Typical uses are single-line text readouts, sensor tags, small panels on consumer devices and portable tools. Choose the 0.69 inch version if space is tighter; choose the 1.1 inch version if you need more readable text.
What resolution does the 0.91 inch size come in?
The standard build is 128x32. Portrait and alternative formats are listed in the table above.
Can I run this size from an Arduino or ESP32?
Yes. Choose an I2C part number and the wiring is four pins; libraries for SSD1306, SH1106 and SH1107 are widely available. SPI builds give a faster refresh for animation but need two more pins.
Is a wide temperature version available?
Selected part numbers in this size are built for -40 °C to +80 °C operation. Tell us the ambient range your product has to survive and we will confirm which builds are qualified for it.
What can be customised?
On this size we regularly adjust the FPC length and pinout, the connector type, the cover glass and the adapter PCB. Changes to the glass itself need tooling, so they only make sense at volume - we will say so honestly rather than quote an unrealistic MOQ.
Custom builds and samples
As a China based display company and module supplier, we hold stock of the standard part numbers on this page and ship samples in one to two weeks. Send your size, resolution, interface and temperature requirements and we will confirm feasibility with a drawing within one working day.
