阅读说明：本技术 显示面板及其驱动方法、移动终端 (Display panel, driving method thereof and mobile terminal ) 是由 陈辰 于 2021-10-09 设计创作，主要内容包括：本发明实施例公开了一种显示面板及其驱动方法、移动终端；该显示面板包括功能附加区及位于该功能附加区外围的主显示区,该显示面板包括位于该主显示区内的第一发光器件、与该第一发光器件电连接的第一发光开关、位于该功能附加区内的第二发光器件及与该第二发光器件电连接的第二发光开关,该第一发光开关的第一栅极与该第二发光开关的第二栅极相互独立驱动；本发明实施例通过在功能附加区及主显示区内设置与对应发光器件电连接的发光开关,不同区域内的发光开关相互独立驱动,对不同区域内的发光器件的连通有独立的开关,减少了不同区域的相互驱动影响,减小了功能附加区与主显示区的显示亮度差异,提高了显示面板的显示质量。(The embodiment of the invention discloses a display panel, a driving method thereof and a mobile terminal; the display panel comprises a function additional area and a main display area which is arranged at the periphery of the function additional area, the display panel comprises a first light-emitting device which is arranged in the main display area, a first light-emitting switch which is electrically connected with the first light-emitting device, a second light-emitting device which is arranged in the function additional area and a second light-emitting switch which is electrically connected with the second light-emitting device, and a first grid electrode of the first light-emitting switch and a second grid electrode of the second light-emitting switch are driven independently; according to the embodiment of the invention, the luminous switches electrically connected with the corresponding luminous devices are arranged in the function additional area and the main display area, the luminous switches in different areas are mutually independently driven, and the independent switches are communicated with the luminous devices in different areas, so that the mutual driving influence of different areas is reduced, the display brightness difference between the function additional area and the main display area is reduced, and the display quality of the display panel is improved.)

1. A display panel comprising a function addition region and a main display region located at a periphery of the function addition region, the display panel comprising:

a first light emitting device positioned in the main display area;

a first light emitting switch electrically connected to the first light emitting device;

a second light emitting device located within the function attachment region;

a second light emitting switch electrically connected to the second light emitting device;

wherein the first gate of the first light emitting switch and the second gate of the second light emitting switch are driven independently of each other.

2. The display panel according to claim 1, characterized in that the display panel further comprises:

the first driving switch is connected with the first source electrode of the first light-emitting switch;

the second driving switch is connected with the second source electrode of the second light-emitting switch;

wherein a driving voltage of the gate of the first driving switch is the same as a driving voltage of the gate of the second driving switch.

3. The display panel according to claim 2, wherein the display panel further comprises a plurality of first light-emitting units disposed in the main display region and a plurality of second light-emitting units disposed in the function addition region, and a light-emitting area of the first light-emitting units is larger than a light-emitting area of the second light-emitting units.

4. The display panel according to claim 3, wherein a signal voltage of the source of the first driving switch is the same as a signal voltage of the source of the second driving switch.

5. The display panel according to claim 2, wherein the display panel further comprises a plurality of first light emitting units disposed in the main display region and a plurality of second light emitting units disposed in the function addition region, and wherein a light emitting efficiency of a light emitting material of the second light emitting units is greater than a light emitting efficiency of a light emitting material of the first light emitting units.

6. A method of driving a display panel, comprising:

providing a display panel, wherein the display panel comprises a function additional area and a main display area positioned at the periphery of the function additional area, and the display panel comprises a first light-emitting device positioned in the main display area, a first light-emitting switch electrically connected with the first light-emitting device, a second light-emitting device positioned in the function additional area and a second light-emitting switch electrically connected with the second light-emitting device;

turning on the first light emitting switch by using a first light emitting driving signal, and turning on the second light emitting switch by using a second light emitting driving signal to make a corresponding signal current flow to the first light emitting device and the second light emitting device;

wherein the first light emission driving signal and the second light emission driving signal are driven independently of each other.

7. The method according to claim 6, wherein the display panel further comprises a first driving switch connected to a first source of the first light emitting switch and a second driving switch connected to a second source of the second light emitting switch, and wherein the step of turning on the first light emitting switch by a first light emitting driving signal and turning on the second light emitting switch by a second light emitting driving signal to allow corresponding signal currents to flow to the first light emitting device and the second light emitting device comprises:

the first driving switch and the second driving switch are turned on by the same driving voltage, so that the signal current of the first driving switch flows to the first light-emitting switch, and the signal current of the second driving switch flows to the second light-emitting switch;

and turning on the first light-emitting switch by using a first light-emitting driving signal, and turning on the second light-emitting switch by using a second light-emitting driving signal, so that a corresponding signal current flows to the first light-emitting device and the second light-emitting device.

8. The method according to claim 7, wherein the display panel further comprises a plurality of first light-emitting units disposed in the main display region and a plurality of second light-emitting units disposed in the function addition region, wherein a light-emitting area of the first light-emitting units is larger than a light-emitting area of the second light-emitting units, and wherein the step of turning on the first light-emitting switches by a first light-emitting driving signal and turning on the second light-emitting switches by a second light-emitting driving signal to allow corresponding signal currents to flow to the first light-emitting devices and the second light-emitting devices comprises:

turning on the first light emitting switch with a first light emitting driving signal, and turning on the second light emitting switch with a second light emitting driving signal;

causing the signal current of the first driving switch to flow to the first light emitting device and causing the signal current of the second driving switch to flow to the second light emitting device;

wherein an on time of the first light emission driving signal is less than an on time of the second light emission driving signal within a unit frame number.

9. The method according to claim 7, wherein the display panel further comprises a plurality of first light-emitting units disposed in the main display region and a plurality of second light-emitting units disposed in the function addition region, wherein a light-emitting area of the first light-emitting units is equal to a light-emitting area of the second light-emitting units, a light-emitting efficiency of a light-emitting material of the second light-emitting units is greater than a light-emitting efficiency of a light-emitting material of the first light-emitting units, and wherein the step of turning on the first light-emitting switches by the first light-emitting driving signals and turning on the second light-emitting switches by the second light-emitting driving signals to allow corresponding signal currents to flow to the first light-emitting devices and the second light-emitting devices comprises:

turning on the first light emitting switch with a first light emitting driving signal, and turning on the second light emitting switch with a second light emitting driving signal;

causing the signal current of the first driving switch to flow to the first light emitting device and causing the signal current of the second driving switch to flow to the second light emitting device;

wherein an on time of the first light emission driving signal is equal to an on time of the second light emission driving signal within a unit frame number.

10. A mobile terminal comprising the display panel according to any one of claims 1 to 5 and a terminal body, the terminal body being integrated with the display panel.

Technical Field

The invention relates to the field of display, in particular to a display panel, a driving method thereof and a mobile terminal.

Background

In recent years, the demand of consumers for the display quality of the display panel is higher and higher, the demand for the full-scale display of the full-scale screen is also higher and higher, and as the function addition area requires a higher required light collection rate, the pixel setting in the function addition area is generally different from the pixel setting in the main display area, and the control of the function addition area and the main display area is kept uniformly adjusted, so that the display brightness difference is obvious.

Therefore, a display panel, a driving method thereof, and a mobile terminal are needed to solve the above technical problems.

Disclosure of Invention

The embodiment of the invention provides a display panel, a driving method thereof and a mobile terminal, which can solve the technical problem that the display brightness difference between a current function additional area and a main display area is obvious.

The embodiment of the invention provides a display panel, which comprises a function additional area and a main display area positioned at the periphery of the function additional area, wherein the display panel comprises:

a first light emitting device positioned in the main display area;

a first light emitting switch electrically connected to the first light emitting device;

a second light emitting device located within the function attachment region;

a second light emitting switch electrically connected to the second light emitting device;

wherein the first gate of the first light emitting switch and the second gate of the second light emitting switch are driven independently of each other.

In one embodiment, the display panel further includes: the first driving switch is connected with the first source electrode of the first light-emitting switch; the second driving switch is connected with the second source electrode of the second light-emitting switch; wherein a driving voltage of the gate of the first driving switch is the same as a driving voltage of the gate of the second driving switch.

In an embodiment, the display panel further includes a plurality of first light-emitting units disposed in the main display area and a plurality of second light-emitting units disposed in the function addition area, and a light-emitting area of the first light-emitting units is larger than a light-emitting area of the second light-emitting units.

In one embodiment, the signal voltage of the source of the first driving switch is the same as the signal voltage of the source of the second driving switch.

In an embodiment, the display panel further includes a plurality of first light emitting units disposed in the main display area and a plurality of second light emitting units disposed in the function addition area, and a light emitting efficiency of a light emitting material of the second light emitting units is greater than a light emitting efficiency of a light emitting material of the first light emitting units.

The embodiment of the invention also provides a driving method of the display panel, which comprises the following steps:

providing a display panel, wherein the display panel comprises a function additional area and a main display area positioned at the periphery of the function additional area, and the display panel comprises a first light-emitting device positioned in the main display area, a first light-emitting switch electrically connected with the first light-emitting device, a second light-emitting device positioned in the function additional area and a second light-emitting switch electrically connected with the second light-emitting device;

turning on the first light emitting switch by using a first light emitting driving signal, and turning on the second light emitting switch by using a second light emitting driving signal to make a corresponding signal current flow to the first light emitting device and the second light emitting device;

wherein the first light emission driving signal and the second light emission driving signal are driven independently of each other.

In an embodiment, the step of turning on the first light emitting switch by a first light emitting driving signal and turning on the second light emitting switch by a second light emitting driving signal to allow corresponding signal currents to flow to the first light emitting device and the second light emitting device further includes: the first driving switch and the second driving switch are turned on by the same driving voltage, so that the signal current of the first driving switch flows to the first light-emitting switch, and the signal current of the second driving switch flows to the second light-emitting switch; and turning on the first light-emitting switch by using a first light-emitting driving signal, and turning on the second light-emitting switch by using a second light-emitting driving signal, so that a corresponding signal current flows to the first light-emitting device and the second light-emitting device.

In an embodiment, the display panel further includes a plurality of first light emitting units disposed in the main display area and a plurality of second light emitting units disposed in the function addition area, a light emitting area of the first light emitting unit is larger than a light emitting area of the second light emitting unit, and the step of turning on the first light emitting switch by a first light emitting driving signal and turning on the second light emitting switch by a second light emitting driving signal to allow corresponding signal currents to flow to the first light emitting device and the second light emitting device includes: turning on the first light emitting switch with a first light emitting driving signal, and turning on the second light emitting switch with a second light emitting driving signal; causing the signal current of the first driving switch to flow to the first light emitting device and causing the signal current of the second driving switch to flow to the second light emitting device; wherein an on time of the first light emission driving signal is less than an on time of the second light emission driving signal within a unit frame number.

In an embodiment, the step of turning on the first light emitting switch by the first light emitting driving signal and turning on the second light emitting switch by the second light emitting driving signal to enable the corresponding signal current to flow to the first light emitting device and the second light emitting device by the second light emitting driving signal further includes: turning on the first light emitting switch with a first light emitting driving signal, and turning on the second light emitting switch with a second light emitting driving signal; causing the signal current of the first driving switch to flow to the first light emitting device and causing the signal current of the second driving switch to flow to the second light emitting device; wherein an on time of the first light emission driving signal is equal to an on time of the second light emission driving signal within a unit frame number.

The embodiment of the invention also provides a mobile terminal, which comprises any one of the display panel and the terminal main body, wherein the terminal main body and the display panel are combined into a whole.

According to the embodiment of the invention, the luminous switches electrically connected with the corresponding luminous devices are arranged in the function additional area and the main display area, the luminous switches in different areas are mutually independently driven, and the independent switches are communicated with the luminous devices in different areas, so that the mutual driving influence of different areas is reduced, the display brightness difference between the function additional area and the main display area is reduced, and the display quality of the display panel is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic top view of a display panel according to an embodiment of the invention;

fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;

FIG. 3 is a circuit diagram of a display panel according to an embodiment of the present invention;

fig. 4 is a schematic diagram of driving voltage waveforms of a first gate and a second gate of a display panel according to an embodiment of the invention;

fig. 5 is a schematic diagram of input voltage waveforms of a first light emitting device and a second light emitting device of a display panel according to an embodiment of the present invention;

FIG. 6 is a flowchart illustrating a driving method of a display panel according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Furthermore, it should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, and are not intended to limit the present invention. In the present invention, unless otherwise specified, the use of directional terms such as "upper" and "lower" generally means upper and lower in the actual use or operation of the device, particularly in the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device.

In recent years, the demand of consumers for the display quality of the display panel is higher and higher, the demand for the full-scale display of the full-scale screen is also higher and higher, and as the function addition area requires a higher required light collection rate, the pixel setting in the function addition area is generally different from the pixel setting in the main display area, and the control of the function addition area and the main display area is kept uniformly adjusted, so that the display brightness difference is obvious.

Referring to fig. 1 to 5, an embodiment of the invention provides a display panel 100, including a function addition region B and a main display region a located at a periphery of the function addition region B, where the display panel 100 includes:

a first light emitting device OLED1 located in the main display area a;

a first light emitting switch EM1 electrically connected with the first light emitting device OLED 1;

a second light emitting device OLED2 located within the function attachment region B;

a second light emitting switch EM2 electrically connected with the second light emitting device OLED 2;

wherein the first gate EMG1 of the first light emitting switch EM1 and the second gate EMG2 of the second light emitting switch EM2 are driven independently from each other.

According to the embodiment of the invention, the luminous switches electrically connected with the corresponding luminous devices are arranged in the function additional area and the main display area, the luminous switches in different areas are mutually independently driven, and the independent switches are communicated with the luminous devices in different areas, so that the mutual driving influence of different areas is reduced, the display brightness difference between the function additional area and the main display area is reduced, and the display quality of the display panel is improved.

The technical solution of the present invention will now be described with reference to specific embodiments.

In this embodiment, referring to fig. 2, the display panel 100 includes a substrate 110, a wire layer 120 on the substrate 110, and a display main body 130 on the wire layer 120.

In this embodiment, referring to fig. 1 and fig. 3, the display panel 100 includes a function addition region B and a main display region a located at a periphery of the function addition region B, and the display panel 100 includes: a first light emitting device OLED1 located in the main display area a; a first light emitting switch EM1 electrically connected with the first light emitting device OLED 1; a second light emitting device OLED2 located within the function attachment region B; a second light emitting switch EM2 electrically connected with the second light emitting device OLED 2; wherein the first gate EMG1 of the first light emitting switch EM1 and the second gate EMG2 of the second light emitting switch EM2 are driven independently from each other.

The first gate EMG1 of the first light emitting switch EM1 and the second gate EMG2 of the second light emitting switch EM2 are driven independently from each other, so that mutual driving influence of different areas is reduced, the display brightness difference between the function additional area B and the main display area a is reduced, and the display quality of the display panel 100 is improved.

In some embodiments, the display body 130 includes the first and second light emitting devices OLEDs 1 and 2. The wire layer 120 includes the first and second light emitting switches EM1 and EM 2.

In some embodiments, the function addition area B may be an off-screen camera area, and a camera is correspondingly disposed in the function addition area B.

In some embodiments, in order to ensure the shooting effect of the camera and the normal display effect of the function addition region B at the same time, the product needs to ensure a certain transmittance for the screen body of the function addition region B in the design, for example, the light emitting area of the pixel in the region is reduced in the design, which further causes the screen body of the function addition region B and the main display region a to need different driving voltage settings when reaching the same brightness, in the driving switch connected to the source of the corresponding light emitting switch, if the driving voltages of the gates of the driving switches are different, the performance of each item of reliability of the display panel 100 will have a significant difference, which further causes the difference in the taste between the screen body of the function addition region B and the main display region a of the product along with the increase of the usage time.

Referring to fig. 3, the display panel 100 further includes: a first driving switch G1 connected to a first source of the first light emitting switch EM 1; a second driving switch G2 connected to a second source of the second emission switch EM 2; wherein the driving voltage of the Gate1 of the first driving switch G1 is the same as the driving voltage of the Gate2 of the second driving switch G2.

The driving voltage of the Gate1 of the first driving switch G1 is set to be the same as the driving voltage of the Gate2 of the second driving switch G2, and the corresponding driving switches are performed by the first emission switch EM1 and the second emission switch EM2 which are independently driven.

For example, referring to fig. 4, a square wave differential black process is performed on the driving voltage of the first gate EMG1, i.e. multiple openings and closings within one frame, a normal square wave signal is applied to the driving voltage of the second gate EMG2, when a voltage is input to the first light emitting device OLED1 and the second light emitting device OLED2, referring to fig. 5, the light emitting time of the first light emitting device OLED1 is less than the light emitting time of the second light emitting device OLED2, thereby reducing the difference in light emission luminance between the first light emitting device OLED1 and the second light emitting device OLED2, when the brightness of the function addition region B is the same as that of the main display region a, the driving voltages of the driving switches may be set to be the same, so as to improve the reliability of the display panel 100 and prolong the service life of the display panel 100, wherein the charging stages in fig. 4 and 5 are not important here and are not particularly limited.

In some embodiments, the display panel 100 further includes a plurality of first light emitting units disposed in the main display area a and a plurality of second light emitting units disposed in the function addition area B, and a light emitting area of the first light emitting units is larger than a light emitting area of the second light emitting units.

Referring to fig. 4 and 5, by disposing light-emitting units with different areas in different display areas, while the light transmittance of the function addition area B is ensured, the brightness of the function addition area B and the main display area a is ensured by the waveform diagrams of different driving voltages for the first gate EMG1 and the second gate EMG2, and meanwhile, the driving voltages for driving the switches can be set to be the same, so that the reliability of the display panel 100 is improved, and the service life of the display panel 100 is prolonged.

In some embodiments, the first light emitting unit may be any one of three colors of red, green and blue, and the second light emitting unit may be any one of three colors of red, green and blue, and when the light emitting color is white, the first light emitting unit may be any one of four colors of red, green, blue and white, and the second light emitting unit may be any one of four colors of red, green, blue and white.

In some embodiments, referring to fig. 3, the signal voltage of the source Data1 of the first driving switch G1 is the same as the signal voltage of the source Data2 of the second driving switch G2. By setting the signal voltages of the sources of the driving switches to be the same, the same brightness of the function additional area B and the main display area a can be achieved by only changing the waveform diagrams of the different driving voltages of the first gate EMG1 and the second gate EMG2, and the mutual influence between the signal voltages of the sources of the different driving switches is reduced.

In some embodiments, in order to ensure the light transmittance of the function-added region B, the arrangement density of the second light-emitting units located in the function-added region B may be reduced or the size of the second light-emitting units may be reduced, but this may reduce the light-emitting luminance of the function-added region B.

The display panel 100 further includes a plurality of first light emitting units disposed in the main display area a and a plurality of second light emitting units disposed in the function addition area B, and the light emitting efficiency of the light emitting material of the second light emitting unit is greater than that of the light emitting material of the first light emitting unit.

The luminous efficiency of the first light-emitting unit is greater than that of the light-emitting material of the first light-emitting unit, so that the brightness difference between the functional additional area B and the main display area a is improved, and meanwhile, the first gate EMG1 and the second gate EMG2, which are driven independently of each other, are matched, so that the oscillograms of the first gate EMG1 and the second gate EMG2 can be consistent, or the square wave patterns are finely adjusted according to the brightness difference, so that the brightness of the functional additional area B and the main display area a tends to be consistent.

In some embodiments, the wire layer 120 includes an active layer, a first insulating layer on the active layer, a gate layer on the first insulating layer, a second insulating layer on the gate layer, a source drain layer on the second insulating layer, and a third insulating layer on the source drain layer.

According to the embodiment of the invention, the luminous switches electrically connected with the corresponding luminous devices are arranged in the function additional area and the main display area, the luminous switches in different areas are mutually independently driven, and the independent switches are communicated with the luminous devices in different areas, so that the mutual driving influence of different areas is reduced, the display brightness difference between the function additional area and the main display area is reduced, and the display quality of the display panel is improved.

Referring to fig. 6, an embodiment of the invention further provides a driving method of a display panel 100, including:

s100, providing a display panel 100, wherein the display panel 100 includes a function addition region B and a main display region a located at a periphery of the function addition region B, and the display panel 100 includes a first light emitting device OLED1 located in the main display region a, a first light emitting switch EM1 electrically connected to the first light emitting device OLED1, a second light emitting device OLED2 located in the function addition region B, and a second light emitting switch EM2 electrically connected to the second light emitting device OLED 2;

s200, turning on the first light emitting switch EM1 by a first light emitting driving signal, and turning on the second light emitting switch EM2 by a second light emitting driving signal, so that corresponding signal currents flow to the first light emitting device OLED1 and the second light emitting device OLED 2;

wherein the first light emission driving signal and the second light emission driving signal are driven independently of each other.

According to the embodiment of the invention, the luminous switches electrically connected with the corresponding luminous devices are arranged in the function additional area and the main display area, the luminous switches in different areas are mutually independently driven, and the independent switches are communicated with the luminous devices in different areas, so that the mutual driving influence of different areas is reduced, the display brightness difference between the function additional area and the main display area is reduced, and the display quality of the display panel is improved.

The technical solution of the present invention will now be described with reference to specific embodiments.

S100, a display panel 100 is provided.

In this embodiment, referring to fig. 1 and fig. 3, the display panel 100 includes a function addition region B and a main display region a located at a periphery of the function addition region B, and the display panel 100 includes a first light emitting device OLED1 located in the main display region a, a first light emitting switch EM1 electrically connected to the first light emitting device OLED1, a second light emitting device OLED2 located in the function addition region B, and a second light emitting switch EM2 electrically connected to the second light emitting device OLED 2.

S200, turning on the first light emitting switch EM1 by a first light emitting driving signal, and turning on the second light emitting switch EM2 by a second light emitting driving signal, so that a corresponding signal current flows to the first light emitting device OLED1 and the second light emitting device OLED 2.

In this embodiment, the first light-emitting driving signal and the second light-emitting driving signal are driven independently.

In some embodiments, referring to fig. 3, the display panel 100 further includes a first driving switch G1 connected to a first source of the first light emitting switch EM1 and a second driving switch G2 connected to a second source of the second light emitting switch EM 2. The step S200 includes:

s210, the first driving switch G1 and the second driving switch G2 are turned on by the same driving voltage, so that the signal current of the first driving switch G1 flows to the first light emitting switch EM1, and the signal current of the second driving switch G2 flows to the second light emitting switch EM 2.

S220, turning on the first light emitting switch EM1 by a first light emitting driving signal, and turning on the second light emitting switch EM2 by a second light emitting driving signal, so that a corresponding signal current flows to the first light emitting device OLED1 and the second light emitting device OLED 2.

The driving voltage of the Gate1 of the first driving switch G1 is set to be the same as the driving voltage of the Gate2 of the second driving switch G2, and the corresponding driving switches are performed by the first emission switch EM1 and the second emission switch EM2 which are independently driven.

For example, referring to fig. 4, a square wave dimming process is performed on the driving voltage of the first gate EMG1, that is, the square wave of the first light emitting driving signal is dimmed, that is, the first light emitting driving signal is turned on and off for a plurality of times within one frame, and a normal square wave signal is performed on the driving voltage of the second gate EMG2, that is, the second light emitting driving signal is a normal square wave signal, when the voltages are input to the first light emitting device OLED1 and the second light emitting device OLED2, referring to fig. 5, the light emitting time of the first light emitting device OLED1 is shorter than the light emitting time of the second light emitting device OLED2, so as to reduce the difference between the light emitting luminance of the first light emitting device OLED1 and the light emitting luminance of the second light emitting device OLED2, and when the luminance of the function additional region B is the same as the luminance of the main display region a, the driving voltages of the driving switches can be set to be the same, thereby improving the reliability of the display panel 100, the service life of the display panel 100 is extended.

The charging stages in fig. 4 and 5 are not important here, and are not particularly limited.

In some embodiments, the display panel 100 further includes a plurality of first light emitting units disposed in the main display area a and a plurality of second light emitting units disposed in the function addition area B, and a light emitting area of the first light emitting units is larger than a light emitting area of the second light emitting units. Step S220 includes:

s221a, turning on the first light emitting switch EM1 with a first light emitting driving signal, and turning on the second light emitting switch EM2 with a second light emitting driving signal.

S222a, the signal current of the first driving switch G1 flows to the first light emitting device OLED1, and the signal current of the second driving switch G2 flows to the second light emitting device OLED 2.

Referring to fig. 4, the on time of the first light emitting driving signal is less than the on time of the second light emitting driving signal within a unit frame number.

The corresponding driving switch is performed by the independently driven first and second emission switches EM1 and EM2, for example, referring to fig. 4, a square wave differential black process is performed on the driving voltage of the first gate EMG1, i.e. multiple openings and closings within one frame, a normal square wave signal is applied to the driving voltage of the first gate EMG1, when a voltage is input to the first light emitting device OLED1 and the second light emitting device OLED2 while making the brightness of the function additional region B the same as that of the main display region a, please refer to fig. 5, the light emitting time of the first light emitting device OLED1 is less than the light emitting time of the second light emitting device OLED2, further, the difference between the light emitting brightness of the first light emitting device OLED1 and the light emitting brightness of the second light emitting device OLED2 is reduced, the driving voltages of the driving switches can be set to be consistent, the reliability of the display panel 100 is improved, and the service life of the display panel 100 is prolonged.

In some embodiments, the display panel 100 further includes a plurality of first light emitting units disposed in the main display area a and a plurality of second light emitting units disposed in the function addition area B, wherein a light emitting area of the first light emitting units is equal to a light emitting area of the second light emitting units, and a light emitting efficiency of a light emitting material of the second light emitting units is greater than a light emitting efficiency of a light emitting material of the first light emitting units. Step S220 includes:

s221b, turning on the first light emitting switch EM1 with a first light emitting driving signal, and turning on the second light emitting switch EM2 with a second light emitting driving signal.

S222b, the signal current of the first driving switch G1 flows to the first light emitting device OLED1, and the signal current of the second driving switch G2 flows to the second light emitting device OLED 2.

The turn-on time of the first light emission driving signal is equal to the turn-on time of the second light emission driving signal within a unit frame number.

The luminous efficiency of the first light-emitting unit is greater than that of the light-emitting material of the first light-emitting unit, so that the brightness difference between the functional additional area B and the main display area a is improved, and meanwhile, the first gate EMG1 and the second gate EMG2, which are driven independently of each other, are matched, so that the oscillograms of the first gate EMG1 and the second gate EMG2 can be consistent, or fine-tuned according to the brightness difference, so that the brightness of the functional additional area B and the main display area a tends to be consistent.

In some embodiments, the voltage values of the first light emitting driving signal and the second light emitting driving signal are the same, and different current outputs can be realized through different on-times.

In some embodiments, the signal voltage of the source Data1 of the first driving switch G1 is the same as the signal voltage of the source Data2 of the second driving switch G2. By setting the signal voltages of the sources of the driving switches to be the same, the same brightness of the function additional area B and the main display area a can be achieved by only changing the waveform diagrams of the different driving voltages of the first gate EMG1 and the second gate EMG2, and the mutual influence between the signal voltages of the sources of the different driving switches is reduced.

According to the embodiment of the invention, the luminous switches electrically connected with the corresponding luminous devices are arranged in the function additional area and the main display area, the luminous switches in different areas are mutually independently driven, and the independent switches are communicated with the luminous devices in different areas, so that the mutual driving influence of different areas is reduced, the display brightness difference between the function additional area and the main display area is reduced, and the display quality of the display panel is improved.

Referring to fig. 7, an embodiment of the present invention further provides a mobile terminal 10, including any one of the display panels 100 and the terminal body 20, where the terminal body 20 and the display panel 100 are combined into a whole.

Please refer to any one of the embodiments of the display panel 100 and fig. 1 to 5, for a detailed structure of the display panel 100, which is not described herein again.

In this embodiment, the terminal main body 20 may include a middle frame, a frame adhesive, and the like, and the mobile terminal 10 may be a mobile display terminal such as a mobile phone and a tablet, which is not limited herein.

The embodiment of the invention discloses a display panel, a driving method thereof and a mobile terminal; the display panel comprises a function additional area and a main display area which is arranged at the periphery of the function additional area, the display panel comprises a first light-emitting device which is arranged in the main display area, a first light-emitting switch which is electrically connected with the first light-emitting device, a second light-emitting device which is arranged in the function additional area and a second light-emitting switch which is electrically connected with the second light-emitting device, and a first grid electrode of the first light-emitting switch and a second grid electrode of the second light-emitting switch are driven independently; according to the embodiment of the invention, the luminous switches electrically connected with the corresponding luminous devices are arranged in the function additional area and the main display area, the luminous switches in different areas are mutually independently driven, and the independent switches are communicated with the luminous devices in different areas, so that the mutual driving influence of different areas is reduced, the display brightness difference between the function additional area and the main display area is reduced, and the display quality of the display panel is improved.

The display panel, the driving method thereof, and the mobile terminal provided by the embodiment of the present invention are described in detail above, and a specific example is applied in the description to explain the principle and the embodiment of the present invention, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.