Display screen and electronic equipment

Abstract

The invention discloses a display screen and electronic equipment, and belongs to the technical field of display. The display screen can comprise a plurality of pixels and a driving circuit, wherein each pixel in the plurality of pixels comprises at least one type of pixel units; at least part of pixel units in the at least one type of pixel units are target pixel units, each target pixel unit comprises a first light-emitting material and a second light-emitting material, and the color gamut of the second light-emitting material is larger than that of the first light-emitting material; in a first display mode, the driving circuit is used for controlling the first light-emitting material in the target pixel unit to emit light; in a second display mode, the driving circuit is used for controlling the second light-emitting material in the target pixel unit to emit light; wherein the display color gamut of the second display mode is larger than the display color gamut of the first display mode.

Description

Technical Field

[0001] The present application belongs to the field of display technology, and specifically relates to a display screen and an electronic device. Background Art

[0002] Organic Light Emitting Diode (OLED) display technology has been widely used in fields such as smartphones, TVs and wearable devices due to its high contrast, fast response speed, wide viewing angle and high color gamut.

[0003] However, OLED technology still faces the challenge of achieving both a wide color gamut and a long lifespan in practical applications. For example, although traditional phosphorescent OLEDs (PHOLEDs) have a long lifespan, their color gamut is relatively narrow. Thermally activated delayed fluorescence (TADF), a material that has emerged in recent years, can provide a wider color gamut and more vivid colors, but its short lifespan limits its application in high-brightness displays. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a display screen and an electronic device to extend the service life of the display screen while meeting the requirements of high color gamut display.

[0005] In a first aspect, an embodiment of the present application provides a display screen, comprising: a plurality of pixels and a driving circuit, wherein each pixel of the plurality of pixels comprises at least one type of pixel unit; At least part of the pixel units in the at least one type of pixel units are target pixel units, and the target pixel units include a first luminescent material and a second luminescent material, wherein the color gamut of the second luminescent material is larger than the color gamut of the first luminescent material; In the first display mode, the driving circuit is used to control the first luminescent material in the target pixel unit to emit light; in the second display mode, the driving circuit is used to control the second luminescent material in the target pixel unit to emit light; wherein, the display color gamut of the second display mode is larger than the display color gamut of the first display mode.

[0006] In a second aspect, an embodiment of the present application provides an electronic device, comprising the display screen as described in the first aspect.

[0007] In an embodiment of the present application, a display screen is designed, which includes a plurality of pixels and a driving circuit, wherein each of the plurality of pixels includes at least one type of pixel unit; at least some of the pixel units in the at least one type of pixel unit are target pixel units, and the target pixel units include a first luminescent material and a second luminescent material, wherein the color gamut of the second luminescent material is larger than the color gamut of the first luminescent material; in a first display mode, the driving circuit is used to control the first luminescent material in the target pixel unit to emit light; in a second display mode, the driving circuit is used to control the second luminescent material in the target pixel unit to emit light; wherein the display color gamut of the second display mode is larger than the display color gamut of the first display mode. This allows the target pixel units in the display screen to switch between display modes with different color gamuts under the control of the driving circuit, thereby meeting the high color gamut display requirements in some scenarios while making the service life of the display screen close to that of a display screen that uses only low color gamut luminescent materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the structure of a display screen provided in an embodiment of the present application. Figure 1 .

[0009] Figure 2 It is a schematic diagram of the distribution of pixel units in a display screen in the related art.

[0010] Figure 3 Schematic diagram of the distribution of pixel units in a display screen provided in an embodiment of the present application.

[0011] Figure 4 Schematic diagram of the distribution of pixel units in a display screen provided in an embodiment of the present application.

[0012] Figure 5 This is a schematic diagram of the structure of a display screen provided in an embodiment of the present application. Figure 2 .

[0013] Figure 6 This is a schematic diagram of the structure of a display screen provided in an embodiment of the present application. Figure 3 .

[0014] Figure 7 This is a schematic diagram of the structure of a display screen provided in an embodiment of the present application. Figure 4 .

[0015] Figure 8 This is a schematic diagram of the structure of a display screen provided in an embodiment of the present application. Figure 5 .

[0016] Figure 9 This is a schematic diagram of the structure of a display screen provided in an embodiment of the present application. Figure 6 .

[0017] Figure 10 This is a driving timing diagram of a display screen provided in an embodiment of the present application.

[0018] Figure 11 This is a schematic diagram of the hardware structure of an electronic device provided in an embodiment of the present application.

[0019] Reference numerals: 100 target pixel unit, 101 encapsulation layer, 102 cathode, 103 electron transport layer, 104 light-emitting layer, 1041 first light-emitting material, 1042 second light-emitting material, 105 hole transport layer, 106 first anode, 107 second anode; 200 driving circuit, 201 first switch (first transistor), 202 second switch (second transistor), 203 first power supply, 204 second power supply, 205 first control signal port, 206 7T1C sub-driving circuit, 207 second control signal port, 208 display data port, 209 third control signal port, 210 fourth control signal port, 211 fifth signal control terminal, 212 third power supply, 213 fourth power supply; 2061 third transistor, 2062 fourth transistor, 2063 fifth transistor, 2064 sixth transistor, 2065 seventh transistor, 2066 eighth transistor, 2067 ninth transistor, 2068 capacitor. DETAILED DESCRIPTION

[0020] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0021] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0022] In order to extend the service life of a display screen while meeting the requirements of high color gamut display, the embodiments of the present application propose a display screen and an electronic device, which are described one by one below.

[0023] An embodiment of the present application provides a display screen, which may include: a plurality of pixels and a driving circuit, wherein each of the plurality of pixels includes at least one type of pixel unit.

[0024] Wherein, at least part of the pixel units in the at least one type of pixel units are target pixel units, such as Figure 1 As shown, the target pixel unit 100 includes a first luminescent material 1041 and a second luminescent material 1042 , wherein the color gamut of the second luminescent material 1042 is larger than the color gamut of the first luminescent material 1041 .

[0025] In the first display mode, the driving circuit 200 is used to control the first luminescent material 1041 to emit light; in the second display mode, the driving circuit 200 is used to control the second luminescent material 1042 to emit light, wherein the display color gamut of the second display mode is larger than the display color gamut of the first display mode.

[0026] In some embodiments, the first light-emitting material 1041 may include a phosphorescent material and a light-emitting material having a lifetime close to that of the phosphorescent material, and the second light-emitting material 1042 may include but is not limited to one of a thermally activated delayed fluorescence material (TADF), a superfluorescent material, and a quantum dot material.

[0027] The reason why the display screen made of the second light-emitting material (such as TADF) has a shorter lifespan is that the normal exciton recombination process of phosphorescent materials is S1-T1-S0 energy level, while TADF is S1-T1-S1-SO. Compared with phosphorescent materials, there is an additional T1-S1 process, so the exciton recombination time is longer, which reduces the lifespan.

[0028] Typically, the lifespan of phosphorescent materials is up to 1,200 hours, while that of TADF is only about 500 hours. Therefore, for the target pixel unit 100, in some embodiments, most of the pixel area can be designed as phosphorescent material, and a small part of the pixel area can be designed as TADF. TADF is used to emit light in a small number of scenarios, and phosphorescent materials are used to emit light in most scenarios. This allows the lifespan of the display screen to be close to that of a display screen made of conventional phosphorescent materials while meeting the high color gamut display requirements in some scenarios.

[0029] In some embodiments, the at least one type of pixel unit includes at least one of a red pixel unit, a green pixel unit, and a blue pixel unit.

[0030] In some embodiments, the target pixel unit may include a portion of or all of at least one of a red pixel unit, a green pixel unit, and a blue pixel unit.

[0031] For example, in an active-matrix organic light-emitting diode (AMOLED) display screen, any one of a red pixel unit, a green pixel unit, and a blue pixel unit may include a phosphor material and TADF.

[0032] It can be understood that although the color gamuts of the first light-emitting material and the second light-emitting material in a target pixel unit are different, the light-emitting colors are the same. For example, when the target pixel unit is a green pixel unit, the first light-emitting material and the second light-emitting material in the target pixel unit are both green light-emitting materials. When the target pixel unit is a red pixel unit or a blue pixel unit, the same applies.

[0033] In some embodiments, in the target pixel unit, the first light-emitting material 1041 and the second light-emitting material 1042 are disposed adjacent to each other.

[0034] The following takes the design of pixels in an AMOLED display as an example to illustrate the distribution of pixel units in a display in the related art and the distribution of pixel units in a display provided in an embodiment of the present application.

[0035] like Figure 2 As shown, in the related art, red, green and blue light-emitting materials can be evaporated on a thin-film transistor (TFT) pixel circuit to form a red pixel unit, a green pixel unit and a blue pixel unit, and a pixel unit of one color is formed by evaporating only one light-emitting material.

[0036] like Figure 3 and Figure 4 As shown, in some embodiments of the present application, for the red pixel units and blue pixel units in the display screen, a red and a blue light-emitting material can be correspondingly evaporated on the TFT pixel circuit to form red pixel units and blue pixel units; and for the green pixel units in the display screen, a portion of the green first light-emitting material 1041 can be correspondingly evaporated on the TFT pixel circuit, and then a portion of the green second light-emitting material 1042 can be evaporated.

[0037] In addition, if Figure 3 and Figure 4 As shown, in the target pixel unit 100 including the first luminescent material 1041 and the second luminescent material 1042, the first luminescent material 1041 can be located in any area of ​​the target pixel unit 100, and the second luminescent material 1042 can be located in the remaining area of ​​the target pixel unit 100 except the first luminescent material 1041. Figure 3In the embodiment, the first light emitting material 1041 is located in the central area of ​​the target pixel unit 100, and the second light emitting material 1042 surrounds the first light emitting material 1041; Figure 4 In the embodiment, the first light-emitting material 1041 is located at a corner of the pixel unit, and the second light-emitting material 1042 is located in the remaining area except the first light-emitting material 1041 .

[0038] In some embodiments, because the color gamut of the first light-emitting material is lower than that of the second light-emitting material, the first light-emitting material 1041 is often used under low-brightness display requirements, has a high frequency of use, and requires a longer service life. Therefore, in the target pixel unit 100, the area occupied by the first light-emitting material 1041 may be larger than the area occupied by the second light-emitting material 1042.

[0039] It should be noted that Figure 3 and Figure 4 This is only an example of pixel unit distribution in the display screen given in the embodiment of the present application. In actual applications, other distribution structures can also be designed. In addition to the above design for the green pixel unit, the red pixel unit and / or blue pixel unit can also be designed in this way.

[0040] An embodiment of the present application provides a display screen comprising a plurality of pixels and a driving circuit. Each of the plurality of pixels comprises at least one type of pixel unit. At least some of the pixel units in the at least one type of pixel unit are target pixel units 100. The target pixel units 100 comprise a first luminescent material 1041 and a second luminescent material 1042, wherein the color gamut of the second luminescent material is larger than the color gamut of the first luminescent material. In a first display mode, the driving circuit 200 is configured to control the emission of the first luminescent material 1041; in a second display mode, the driving circuit 200 is configured to control the emission of the second luminescent material 1042. This allows the target pixel units 100 in the display screen to switch between display modes with different color gamuts under the control of the driving circuit 200. This allows the target pixel units 100 to meet the high color gamut display requirements in some scenarios while ensuring that the service life of the target pixel units 100 is close to that of pixel units using only low color gamut luminescent materials.

[0041] In some embodiments, as Figure 1As shown, the target pixel unit 100 may include: an encapsulation layer 101, a cathode 102, an electron transport layer 103, a light-emitting layer 104, a hole transport layer 105, a first anode 106, and a second anode 107, wherein the light-emitting layer 104 may include a first light-emitting material 1041 and a second light-emitting material 1042. The first light-emitting material 1041 and the second light-emitting material 1042 share the cathode 102, the electron transport layer 103, and the hole transport layer 105 of the target pixel unit 100, the first light-emitting material 1041 is connected to the first anode 106 of the light-emitting unit 100, and the second light-emitting material 1042 is connected to the second anode 107 of the light-emitting unit 100, and the first anode 106 and the second anode 107 are independent of each other.

[0042] In some embodiments, as Figure 5 As shown, the driving circuit 200 may include a first switch 201 and a second switch 202 .

[0043] In some embodiments, as Figure 5 and Figure 6 As shown, the first switch 201 is connected in series between the first anode 106 and the first power supply 203; the second switch 202 is connected in series between the second anode 107 and the first power supply 203. The first power supply 203 may be an electro-luminescent positive supply voltage (ELVDD).

[0044] In some embodiments, as Figure 6 As shown, the first light-emitting material 1041 and the second light-emitting material 1042 in the target pixel unit 100 can be represented as diodes with a common cathode but independent anodes. The cathode of the target pixel unit 100 is connected to the second power supply 204, which can be an electro-luminescent negative supply voltage (ELVSS).

[0045] exist Figure 5 or Figure 6 In the display screen shown, in the first display mode, the driving circuit 200 is used to control the first switch 201 to be closed and the second switch 202 to be opened, so as to control the first luminescent material 1041 to emit light; in the second display mode, the driving circuit 200 is used to control the first switch 201 to be opened and the second switch 202 to be closed, so as to control the second luminescent material 1042 to emit light.

[0046] In some embodiments, as Figure 7As shown, the first switch 201 may be a first transistor, and the second switch 202 may be a second transistor.

[0047] In some embodiments, as Figure 7 As shown, the first transistor is a P-type transistor, the second transistor is an N-type transistor, the first end is a source S, the second end is a drain D, and the control end is a gate G.

[0048] In which, the first end (source S) of the first transistor 201 is connected to the first power supply 203, the second end (drain D) of the first transistor 201 is connected to the first anode 106, the second end (drain D) of the second transistor 202 is connected to the first power supply 23, the first end (source S) of the second transistor 202 is connected to the second anode 107, and the control ends (gate G) of the first transistor 201 and the second transistor 202 are both connected to the first control signal port (EM[n+1]) 205 of the driving circuit.

[0049] In the first display mode, the first control signal port 205 outputs a low level to control the first transistor 201 to be turned on and the second transistor 202 to be turned off, thereby controlling the first light-emitting material 1041 to emit light; in the second display mode, the first control signal port 205 outputs a high level to control the first transistor 201 to be turned off and the second transistor 202 to be turned on, thereby controlling the second light-emitting material 1042 to emit light.

[0050] In some embodiments, as Figure 8 As shown, for a target pixel unit of a certain color, the first and second luminescent materials of the corresponding colors can be evaporated at the positions of the first transistor 201 and the second transistor 202 in the pixel circuit, respectively, to obtain a target pixel unit 100 comprising the first and second luminescent materials 1041 and 1042. It is not difficult to see that the display screen proposed in the embodiment of the present application is simple to produce and process, easy to implement, and low in cost.

[0051] In some embodiments, as Figure 9 As shown, the driving circuit 200 may further include: a 7T1C sub-driving circuit 206 formed by 7 transistors and 1 capacitor; wherein the first end (source S) of the first transistor 201 is connected to the first power supply 203 through the 7T1C sub-driving circuit 206, and the second end (drain D) of the second transistor 202 is connected to the first power supply 203 through the 7T1C sub-driving circuit 206.

[0052] Among them, the existing 7T1C driving circuit is based on low-temperature polycrystalline silicon (LTPS) backplane technology. In the 7T1C driving circuit, each pixel unit is equipped with 7 thin-film transistors (TFT) and 1 storage capacitor (Cst).

[0053] In other embodiments, the driving circuit 200 may further include: an 8T1C sub-driving circuit formed by 8 transistors and 1 capacitor; wherein the first end (source S) of the first transistor 201 is connected to the first power supply 203 through the 8T1C sub-driving circuit, and the second end (drain D) of the second transistor 202 is connected to the first power supply 203 through the 8T1C sub-driving circuit.

[0054] In other embodiments, the driving circuit 200 may further include: a 6T1C sub-driving circuit formed by 6 transistors and 1 capacitor; wherein the first end (source S) of the first transistor 201 is connected to the first power supply 203 through the 6T1C sub-driving circuit, and the second end (drain D) of the second transistor 202 is connected to the first power supply 203 through the 6T1C sub-driving circuit.

[0055] In the 6T1C driver circuit, each pixel unit is equipped with 6 thin-film transistors (TFTs) and 1 storage capacitor (Cst), and in the 8T1C driver circuit, each pixel unit is equipped with 8 thin-film transistors (TFTs) and 1 storage capacitor (Cst). The 8T1C driver circuit can be based on LTPS backplane technology or low-temperature polycrystalline oxide (LTPO) backplane technology. LTPO is a hybrid of LTPS and indium gallium zinc oxide (IGZO).

[0056] That is to say, a display screen proposed in an embodiment of the present application can add a P-type first transistor 201 and an N-type second transistor 202 on the basis of the existing 6T1C / 7T1C / 8T1C driving circuits in the related art, which serve as control switches for the first light-emitting material 1041 and the second light-emitting material 1042 in the target pixel unit 100, respectively, and control the conduction and cutoff of the first transistor 201 and the second transistor 202 by the level output by the first control signal port 205 to control the target pixel unit 100 to switch between display modes of different color gamuts, thereby meeting the high color gamut display requirements in some scenarios while making the service life of the display screen close to the service life of a display screen that completely uses low color gamut light-emitting materials.

[0057] The connection relationship between the target pixel unit and the driving circuit in a display screen proposed in an embodiment of the present application is described in detail below, taking the addition of a P-type first transistor 201 and an N-type second transistor 202 to the 7T1C sub-driving circuit as an example.

[0058] like Figure 9 As shown, in a display screen proposed in an embodiment of the present application, the target pixel unit 100 includes a first light-emitting material 1041 and a second light-emitting material 1042 ; the driving circuit 200 includes a 7T1C sub-driving circuit 206 , a first transistor 201 and a second transistor 202 .

[0059] like Figure 9 As shown, the 7T1C sub-driving circuit 206 includes: a third transistor 2061 , a fourth transistor 2062 , a fifth transistor 2063 , a sixth transistor 2064 , a seventh transistor 2065 , an eighth transistor 2066 , a ninth transistor 2067 and a capacitor 2068 .

[0060] like Figure 9 As shown, one end of the capacitor 2068 is connected to the first power supply 203, and the other end of the capacitor 2068 is respectively connected to the control end (gate G) of the third transistor 2061; the first end of the third transistor 2061 is respectively connected to the first end of the fourth transistor 2062 and the second end of the seventh transistor 2065, and the second end of the third transistor 2061 is respectively connected to the first end of the fifth transistor 2063 and the first end of the eighth transistor 2066; the second end of the fourth transistor 2062 is connected to the display data (DATA) port 208, and the control end of the fourth transistor 2062 is respectively connected to the control end of the fifth transistor 2063 and the third control signal port (Scan[n]) 209; the second end of the fifth transistor 2063 is respectively connected to the first end of the sixth transistor 2064 and the control end of the third transistor 2061; the sixth transistor The second end of the transistor 2064 is connected to the fourth power supply 213, which is used to provide an initialization potential (Vint1) for the capacitor 2068. The control end of the sixth transistor 2064 is connected to the fourth control signal port (Scan[n-1]) 210. The first end of the seventh transistor 2065 is connected to the first power supply 203. The control end of the seventh transistor 2065 and the control end of the eighth transistor 2066 are both connected to the second control signal port (EM[n]) 207. The second end of the eighth transistor 2066 is connected to the second end of the ninth transistor 2067. The first end of the ninth transistor 2067 is connected to the third power supply 212, which is used to provide an initialization potential (Vint2) for the target pixel unit 100. The control end of the ninth transistor 2067 is connected to the fifth signal control port (Scan[n+1]) 211.

[0061] like Figure 9 As shown, the first end of the first transistor 201 and the second end of the second transistor 202 newly added in the embodiment of the present application are both connected to the second end of the eighth transistor 2066 and the second end of the ninth transistor 2067; the second end of the first transistor 201 is connected to the anode of the first light-emitting material 1041 (i.e., the first anode), and the first end of the second transistor 201 is connected to the anode of the second light-emitting material 1042 (i.e., the second anode); the control ends of the first transistor 201 and the second transistor 201 are both connected to the first control signal port (EM[n+1]) 205; and the cathodes of the first light-emitting material 1041 and the second light-emitting material 1042 are both connected to the second power supply 204. Figure 9 The meaning of each control signal is shown in Table 1 below.

[0062] Table 1 Figure 9 The meaning of each control signal in

[0063] As an example, for Figure 9 In the display screen shown, when used in a low color gamut (normal color gamut), the third transistor 2061, the seventh transistor 2065, and the eighth transistor 2066 are turned on, and at the same time, the first control signal port (EM[n+1]) 205 outputs a low level, the first transistor 201 is turned on, and the second transistor 202 is turned off. At this time, the first light-emitting material 1041 of the low color gamut emits light, which can ensure that the target pixel unit 100 has a long lifespan; in a few scenarios where a high color gamut display is required, the third transistor 2061, the seventh transistor 2065, and the eighth transistor 2066 are turned on, and at the same time, the first control signal port (EM[n+1]) 205 outputs a high level, the first transistor 201 is turned off, and the second transistor 202 is turned on. At this time, the second light-emitting material 1042 of the high color gamut emits light, and the display screen enters a high color gamut display mode, meeting the high color gamut display requirements.

[0064] Taking a mobile phone as an example, a high color gamut display mode is usually only required in a few scenarios such as taking photos and watching high color gamut videos. Most of the time, a conventional color gamut display mode can meet user needs. Therefore, a display screen proposed in this application includes: multiple pixels and a driving circuit, each of the multiple pixels includes at least one type of pixel unit; at least some of the pixel units in the at least one type of pixel unit are target pixel units, and the target pixel units include a first luminescent material and a second luminescent material, wherein the color gamut of the second luminescent material is larger than the color gamut of the first luminescent material. By changing the high and low levels output by the driving circuit, the first and second luminescent materials in the target pixel units are controlled to alternately emit light, thereby realizing on-demand switching of the display screen between a first display mode (conventional color gamut display mode) and a second display mode (high color gamut display mode). That is, in the first display mode, a low color gamut material - the first luminescent material is used to emit light to ensure a long life; when high color gamut display is required, the display screen switches to the second display mode and uses a high color gamut material - the second luminescent material to emit light to ensure a wider display color gamut, thereby meeting the high color gamut display requirements while not affecting the normal service life of the display screen.

[0065] Next, we will introduce Figure 9 The driving principle of the display screen shown in FIG is similar to that of the conventional 7T1C driving circuit. Figure 10 As shown in the figure, within one frame of display refresh, the entire driving timing process can be divided into the following four stages: Phase T1: the Scan[n-1] signal is at a low level, the sixth transistor 2064 is turned on, the negative voltage Vint1 output by the fourth power supply 213 is input to the gate of the third transistor 2061 and stored in the capacitor 2068 for retention.

[0066] During stage T2, the Scan[n] signal is at a low level, turning on the fourth and fifth transistors 2062 and 2063. Simultaneously, the third transistor 2061 remains in the on state, maintaining the negative voltage Vint1 stored in capacitor 2068 during the previous stage. The DATA signal is transmitted along the fourth, third, and fifth transistors 2062, 2061, and 2063, ultimately being stored in capacitor 2068. The gate voltage Vg of the third transistor 2061 is Vdata-Vth, where Vth is the threshold voltage of the third transistor 2061. This operation extracts the Vth threshold voltage of the third transistor 2061, providing a prerequisite for subsequent Vth optimization of the third transistor 2061.

[0067] In stage T3, the Scan[n+1] signal is at a low level, the ninth transistor 2067 is turned on, and the negative voltage Vint2 output by the third power supply 212 is input to the first anode and the second anode of the target pixel unit 100, charging and resetting the target pixel unit 100, and releasing the residual charge accumulated in the target pixel unit 100.

[0068] T4 stage: in the first display mode, the Scan[n-1], Scan[n], and Scan[n+1] signals are all at a high level, the fourth transistor 2062, the fifth transistor 2063, the sixth transistor 2064, and the ninth transistor 2067 are all in the off state, the EM[n] signal is at a low level, the seventh transistor 2065 and the eighth transistor 2066 are both in the on state, the EM[n+1] signal is at a low level, and the output is a low level. The first transistor 201 is turned on and the second transistor 202 is turned off. At this time, only the first light-emitting material 1041 with a low color gamut emits light, which can ensure that the target pixel unit 100 has a long life; in the second display mode, the Scan[n-1], Scan[n], Scan[n+1], and EM[n] signals are all consistent with those under medium and high brightness, the EM(n+1) signal is at a high level, the first transistor 201 is turned off, and the second transistor 202 is turned on. At this time, only the second light-emitting material 1042 with a high color gamut emits light, and the display screen enters the high color gamut display mode, meeting the high color gamut display requirements.

[0069] In some embodiments, a display screen provided in an embodiment of the present application may be a screen based on a 7T1C driving circuit, an LTPS screen, a screen based on an 8T1C driving circuit, an LTPO screen, etc., without specific limitation here.

[0070] Optionally, an embodiment of the present application further provides an electronic device, which may include the display screen in the above embodiment and can achieve the same technical effect. To avoid repetition, it will not be described here.

[0071] The electronic device in the embodiment of the present application includes a mobile electronic device or a non-mobile electronic device.

[0072] In actual application, the electronic device may be a terminal or other device other than a terminal. For example, the electronic device may be a mobile phone, a tablet computer, a laptop computer, a PDA, an in-vehicle electronic device, a mobile Internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a personal digital assistant (PDA), etc. It may also be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), an ATM or a self-service machine, etc., and the embodiments of the present application do not specifically limit this.

[0073] Figure 11 A schematic diagram of the hardware structure of an electronic device implementing an embodiment of the present application. The electronic device 1100 includes but is not limited to components such as a radio frequency unit 1108 , a network module 1102 , an audio output unit 1103 , an input unit 1104 , a sensor 1105 , a display unit 1106 , a user input unit 1107 , an interface unit 1108 , a memory 1109 , and a processor 1110 .

[0074] Those skilled in the art will understand that the electronic device 1100 may also include a power source (such as a battery) to power each component. The power source may be logically connected to the processor 1110 through a power management system, thereby implementing functions such as charging, discharging, and power consumption management through the power management system. Figure 11 The electronic device structure shown in the figure does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be repeated here. It should be understood that in this embodiment of the present application, the input unit 1104 may include a graphics processing unit (GPU) 11041 and a microphone 11042. The GPU 11041 processes image data of still images or videos captured by an image capture device (e.g., a camera) in video capture mode or image capture mode. The display unit 1106 may include a display panel 11061, which may be configured in the form of a liquid crystal display, an organic pixel unit, or the like. The user input unit 1107 includes a touch panel 11071 or at least one of other input devices 11072. The touch panel 11071, also known as a touch screen, may include a touch detection device and a touch controller. Other input devices 11072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, on / off keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail here.

[0075] In some embodiments, the display panel 11061 may be a display screen proposed in an embodiment of the present application.

[0076] Memory 1109 can be used to store software programs and various data. Memory 1109 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). Furthermore, memory 1109 may include volatile memory or non-volatile memory, or both. Non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory may be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DRRAM). The memory 1109 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0077] Processor 1110 may include one or more processing units. Optionally, processor 1110 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 1110.

[0078] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0079] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better embodiment. Based on this understanding, the technical solution of this application, or the part that contributes to the existing technology, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of this application.

[0080] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A display screen, characterized in that: include: a plurality of pixels and a driving circuit, wherein each pixel of the plurality of pixels includes at least one type of pixel unit; At least part of the pixel units in the at least one type of pixel units are target pixel units, and the target pixel units include a first luminescent material and a second luminescent material, wherein the color gamut of the second luminescent material is larger than the color gamut of the first luminescent material; In the first display mode, the driving circuit is used to control the first luminescent material in the target pixel unit to emit light; in the second display mode, the driving circuit is used to control the second luminescent material in the target pixel unit to emit light; wherein, the display color gamut of the second display mode is larger than the display color gamut of the first display mode.

2. The display screen according to claim 1, wherein: In the target pixel unit, the first light-emitting material is adjacent to the second light-emitting material.

3. The display screen according to claim 2, wherein: The first luminescent material surrounds the second luminescent material.

4. The display screen according to claim 1, wherein: In the target pixel unit, an area occupied by the first light-emitting material is larger than an area occupied by the second light-emitting material.

5. The display screen according to claim 1, wherein: The at least one type of pixel unit includes at least one of a red pixel unit, a green pixel unit and a blue pixel unit.

6. The display screen according to claim 1, wherein: The first light-emitting material includes a phosphorescent material, and the second light-emitting material includes one of a thermally activated delayed fluorescent material TADF, a super fluorescent material, and a quantum dot material.

7. The display screen according to claim 1, wherein: In the target pixel unit, the first light-emitting material and the second light-emitting material share a cathode, an electron transport layer and a hole transport layer, the first light-emitting material is connected to the first anode of the target pixel unit, the second light-emitting material is connected to the second anode of the target pixel unit, and the first anode and the second anode are independent of each other.

8. The display screen according to claim 7, characterized in that The driving circuit includes a first switch and a second switch; The first switch is connected in series between the first anode and the first power supply; the second switch is connected in series between the second anode and the first power supply; In the first display mode, the driving circuit is used to control the first switch to be closed, so as to control the first luminescent material to emit light; In the second display mode, the driving circuit is used to control the second switch to be closed, so as to control the second luminescent material to emit light.

9. The display screen according to claim 8, characterized in that The first switch is a first transistor, and the second switch is a second transistor; A first terminal of the first transistor is connected to the first power supply, a second terminal of the first transistor is connected to the first anode, a second terminal of the second transistor is connected to the first power supply, a first terminal of the second transistor is connected to the second anode, and control terminals of the first transistor and the second transistor are both connected to a first control signal port of the drive circuit; In the first display mode, the first control signal port outputs a low level to control the first transistor to be turned on, thereby controlling the first light-emitting material to emit light; In the second display mode, the first control signal port outputs a high level to control the second transistor to be turned on, thereby controlling the second light-emitting material to emit light.

10. An electronic device, characterized in that: include: The display screen according to any one of claims 1 to 9.

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