Electronic device for driving plurality of display areas of display at different driving frequencies
An electronic device and a method for driving a plurality of display areas of a display at different driving frequencies are provided. The electronic device can determine a first driving frequency of a first application, and the position of a first portion on which a first execution screen of the first application is to be displayed, determine a second driving frequency of a second application, and the position of a second portion on which a second execution screen of the second application is to be displayed, determine a third driving frequency of a third application, and the position of a third portion on which a third execution screen of the third application is to be displayed, and drive a first area of the display panel based on a first partial scan rate, and drive a second area of the display panel based on a second partial scan rate.
1. An electronic device, comprising:
a display panel;
a display driver integrated circuit (DDIC) configured to drive the display panel; and
a processor, wherein the processor is configured to:
control the DDIC to drive the display panel in a split screen state based on a user input, wherein the split screen state comprises a state in which an entire display area of the display panel is divided into a plurality of areas and in which the plurality of areas are driven independently each other,
execute a first application,
execute a second application,
execute a third application,
determine a first driving frequency configured by the first application and a position of a first part on which a first execution screen of the first application is to be displayed,
determine a second driving frequency configured by the second application and a position of a second part on which a second execution screen of the second application is to be displayed,
determine a third driving frequency configured by the third application and a position of a third part on which a third execution screen of the third application is to be displayed,
determine whether the first part and the second part are disposed adjacent to each other in a direction perpendicular to a scan direction of the display panel,
calculate a least common multiple of the first driving frequency and the second driving frequency in response to the first part and the second part being disposed adjacent to each other in a direction perpendicular to a scan direction of the display panel,
control the DDIC to drive a first area of the display panel including the first part and the second part of the display panel based on a first partial refresh rate corresponding to the least common multiple, and
control the DDIC to drive a second area of the display panel including the third part of the display panel based on a second partial refresh rate corresponding to the third driving frequency.
2. The electronic device of claim 1 , wherein the processor is further configured to:
determine whether at least one area of the first part to the third part is continuously connected without being segmented along the scan direction and has substantially the same width as a horizontal width or a vertical width of the entire display area of the display panel,
calculate a least common multiple of the first driving frequency to the third driving frequency based on the determination, and
control the DDIC to drive the first area and the second area based on a full screen refresh rate based on the calculated least common multiple of the first driving frequency to the third driving frequency.
3. The electronic device of claim 1 ,
wherein the display panel comprises a plurality of gate lines disposed at intervals along the scan direction and a plurality of data lines disposed to cross the gate lines, and
wherein the processor is further configured to:
calculate a turn-on period of a first scan signal corresponding to the first partial refresh rate and a turn-on period of a second scan signal corresponding to the second partial refresh rate, and
control the DDIC to supply a plurality of scan signals having a turn-on period of the second scan signal to the plurality of gate lines disposed in the first area and the second area, respectively, in response to the turn-on period of the second scan signal being shorter than that of the first scan signal.
4. The electronic device of claim 3 , wherein the processor is further configured to control the DDIC to supply first data of the first application or second data of the second application to the plurality of data lines in synchronization with a plurality of scan signals having a turn-on period of the second scan signal.
5. The electronic device of claim 1 , wherein the processor is further configured to display a black line having a specified width at a boundary between the first area and the second area.
6. The electronic device of claim 1 , wherein the processor is further configured to control the DDIC to insert a specified delay time between a time for driving the first area and a time for driving the second area.
7. The electronic device of claim 1 , wherein the processor is further configured to:
receive a designated event for rotating a screen while the DDIC drives the first area of the display panel based on the first partial refresh rate and drives the second area based on the second partial refresh rate,
change a layout in which the first part to the third part are displayed on an entire display screen based on the event,
determine whether at least one area of the first part to the third part is continuously connected without being segmented along the scan direction and has substantially the same width as a horizontal width or a vertical width of the entire display area of the display panel,
calculate a least common multiple of the first driving frequency to the third driving frequency based on the determination, and
control the DDIC to drive the first area and the second area based on a full screen refresh rate based on the calculated least common multiple of the first driving frequency to the third driving frequency.
8. The electronic device of claim 1 , wherein the processor is further configured to determine data signals supplied to each of the first area and the second area using one piece of gamma data.
9. The electronic device of claim 1 , wherein, in response to the first partial refresh rate being smaller than a reference frequency, the processor is further configured to change the first partial refresh rate to a value greater than or equal to the reference frequency.
10. The electronic device of claim 9 , wherein, in response to the first partial refresh rate being smaller than a reference frequency, the processor is configured to control the DDIC to drive the first part at a refresh rate corresponding to a multiple of the first partial refresh rate.
11. A method of driving an electronic device, the method comprising:
executing a first application;
executing a second application;
executing a third application;
determining a first driving frequency configured by the first application and a position of a first part on which a first execution screen of the first application is to be displayed;
determining a second driving frequency configured by the second application and a position of a second part on which a second execution screen of the second application is to be displayed;
determining a third driving frequency configured by the third application and a position of a third part on which a third execution screen of the third application is to be displayed;
determining whether the first part and the second part are disposed adjacent to each other in a direction perpendicular to a scan direction of a display panel of the electronic device;
calculating, in response to the first part and the second part being disposed adjacent to each other in a direction perpendicular to the scan direction of the display panel, a least common multiple of the first driving frequency and the second driving frequency;
controlling a display driver integrated circuit (DDIC) to drive a first area of the display panel including the first part and the second part of the display panel based on a first partial refresh rate corresponding to the least common multiple; and
controlling the DDIC to drive a second area of the display panel including the third part of the display panel based on a second partial refresh rate corresponding to the third driving frequency.
12. The method of claim 11 , further comprising:
determining whether at least one area of the first part to the third part is continuously connected without being segmented along the scan direction and has substantially the same width as a horizontal width or a vertical width of an entire display area of the display panel;
calculating a least common multiple of the first driving frequency to the third driving frequency based on the determination; and
controlling the DDIC to drive the first area and the second area based on a full screen refresh rate based on the calculated least common multiple of the first driving frequency to the third driving frequency.
13. The method of claim 11 ,
wherein the display panel comprises a plurality of gate lines disposed at intervals along the scan direction and a plurality of data lines disposed to cross the gate lines, and
wherein the method further comprises:
calculating a turn-on period of a first scan signal corresponding to the first partial refresh rate and a turn-on period of a second scan signal corresponding to the second partial refresh rate; and
controlling, in response to the turn-on period of the second scan signal being shorter than that of the first scan signal, the DDIC to supply a plurality of scan signals having the turn-on period of the second scan signal to the plurality of gate lines disposed in the first area and the second area, respectively.
14. The method of claim 13 , further comprising:
controlling the DDIC to supply first data of the first application or second data of the second application to the plurality of data lines in synchronization with a plurality of scan signals having the turn-on period of the second scan signal.
15. The method of claim 11 , further comprising:
displaying a black line having a specified width at a boundary between the first area and the second area.
16. The method of claim 11 , further comprising:
controlling the DDIC to insert a specified delay time between a driving time of the first area and a driving time of the second area.
17. The method of claim 11 , further comprising:
driving, by the DDIC, the first area of the display panel based on the first partial refresh rate, and receiving a designated event for rotating a screen while driving the second area based on the second partial refresh rate;
changing a layout in which the first part to the third part are displayed on an entire display screen based on the event;
determining whether at least one area of the first part to the third part is continuously connected without being segmented along the scan direction and has substantially the same width as a horizontal width or a vertical width of an entire display area of the display panel;
calculating a least common multiple of the first driving frequency to the third driving frequency based on the determination; and
controlling the DDIC to drive the first area and the second area based on a full screen refresh rate based on the calculated least common multiple of the first driving frequency to the third driving frequency.
18. The method of claim 11 , further comprising:
determining data signals supplied to each of the first area and the second area using one piece of gamma data.