Application of OLED display based on single chip microcomputer

Author: From: Time: 2019-10-25

1 An Organic Light Emitting Display (OLED) is a new type of light emitting and display device. An OLED is essentially a thin film device whose light-emitting layer is an organic material layer that emits light when a current is passed through it. Compared with the traditional liquid crystal display (LCD), in addition to the absence of a backlight, the OLED display can achieve a thickness of less than 1mm, which provides the possibility of software display, in addition to a larger viewing angle, higher brightness, more color rich. OLED can be widely used in handheld devices, communication terminals, instrumentation and other fields.

2 module structure
The module structure of the OLED is introduced below by taking the Visionox VGG12864E-S001 module as an example.

2.1 Module Block Diagram
The VGG12864E-S001 module has an OLED display with 128 columns and a 64-line structure. A two-column column driver controller is used, each with 64 outputs, driving 1-64 columns and 65-128 columns, respectively; using a row driver with 64 rows of output.

3 Application examples
In practical applications, there are two ways to connect the VGG12864E-S001 module to the microprocessor, one is direct access mode and the other is indirect access mode. The direct access method is taken as an example to introduce the connection circuit with the 8031.