1# Display Power Manager<a name="EN-US_TOPIC_0000001152026155"></a> 2 3- [Introduction](#section11660541593) 4- [Directory Structure](#section19472752217) 5- [Repositories Involved](#section63151229062) 6 7## Introduction<a name="section11660541593"></a> 8 9The Display Power Manager module provides the following capabilities: 10 111. Turning on/off the display 122. Adjusting the brightness of the display screen 13 14**Figure 1** Architecture of the Display Power Manager module<a name="fig106301571239"></a> 15 16 17 18## Directory Structure<a name="section19472752217"></a> 19 20``` 21base/powermgr/display_manager 22├── figures # Architecture 23├── frameworks # Framework layer 24│ ├── napi # NAPI layer 25│ └── native # Native layer 26├── interfaces # API layer 27│ └── inner_api # Internal APIs 28├── sa_profile # SA profile 29├── service # Server layer 30│ ├── etc # Brightness configuration file 31│ ├── native # Native layer 32│ └── zidl # Zidl API layer 33├── test # Test cases 34│ ├── fuzztest # Fuzz test 35│ ├── unittest # Unit test 36│ ├── systemtest # System test 37│ └── utils # Test tools 38└── utils # Utilities 39``` 40 41## Repositories Involved<a name="section63151229062"></a> 42 43[Power Management Subsystem](https://gitee.com/openharmony/docs/blob/master/en/readme/power-management.md) 44 45[powermgr_power_manager](https://gitee.com/openharmony/powermgr_power_manager) 46 47**powermgr_display_manager** 48 49[powermgr_battery_manager](https://gitee.com/openharmony/powermgr_battery_manager) 50 51[powermgr_thermal_manager](https://gitee.com/openharmony/powermgr_thermal_manager) 52 53[powermgr_battery_statistics](https://gitee.com/openharmony/powermgr_battery_statistics) 54 55[powermgr_battery_lite](https://gitee.com/openharmony/powermgr_battery_lite) 56 57[powermgr_powermgr_lite](https://gitee.com/openharmony/powermgr_powermgr_lite) 58