Light-emitting component, display device, control method, device and electronic device thereof

Abstract

The embodiments of the present application provide a light-emitting component, a display device, a control method, a device, and an electronic device thereof, which belong to the technical field of display devices, wherein the light-emitting component includes: a first light-emitting layer; a charge generation layer, connected in series with the first light-emitting layer; a second light-emitting layer, connected in series with the charge generation layer; a driving circuit, electrically connected to the first light-emitting layer; a switching device, electrically connected to the charge generation layer, when the switching device is in a first state, one of the first light-emitting layer and the second light-emitting layer is connected to the driving circuit, and the other is short-circuited; when the switching device is in a second state, both the first light-emitting layer and the second light-emitting layer are connected to the driving circuit.

Description

Technical Field

[0001] The present application belongs to the technical field of display devices, and specifically relates to a light-emitting component, a display device, a control method, a device, and an electronic device. Background Art

[0002] Currently, in order to improve the maximum brightness of a display device, a double-layer organic light emitting diode (OLED) is usually set in the display device. If the maximum brightness of one layer of OLED is 500 nits, then even if there is a certain loss, the maximum brightness of two layers of OLED will be close to 1000 nits.

[0003] In related technologies, two layers of OLED are usually controlled simultaneously, that is, the brightness of the two layers of OLED is adjusted simultaneously. For example, if the required brightness is 600 nits, then each layer of OLED operates at 300 nits. The entire display device usually has three light-emitting units: red, green and blue. However, the luminous efficiency of these three light-emitting units varies greatly at low brightness, thereby affecting the display effect of the display device. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a light-emitting component, a display device, a control method, a device and an electronic device thereof, which can effectively solve the technical problem in the related art that the double-layer OLED can only control the brightness at the same time, resulting in large differences in the luminous efficiency of light-emitting units of different colors at low brightness.

[0005] In a first aspect, an embodiment of the present application provides a light-emitting assembly, comprising:

[0006] a first light-emitting layer;

[0007] A charge generation layer connected in series with the first light-emitting layer;

[0008] a second light-emitting layer, connected in series with the charge-generating layer;

[0009] a driving circuit electrically connected to the first light-emitting layer;

[0010] The switching device is electrically connected to the charge generation layer. When the switching device is in a first state, one of the first light-emitting layer and the second light-emitting layer is connected to the driving circuit and the other is short-circuited. When the switching device is in a second state, both the first light-emitting layer and the second light-emitting layer are connected to the driving circuit.

[0011] In a second aspect, an embodiment of the present application provides a display device, including:

[0012] At least one light-emitting component provided by the embodiment of the first aspect.

[0013] In a third aspect, an embodiment of the present application provides a method for controlling a display device, wherein the display device includes the light-emitting component provided in the embodiment of the first aspect, and the method includes:

[0014] determining display brightness information of a display device;

[0015] When the display brightness information is less than or equal to the brightness threshold, the switch device in the light-emitting component is controlled to operate in a first state, so that one of the first light-emitting layer and the second light-emitting layer is connected to the driving circuit and the other is short-circuited;

[0016] When the displayed brightness information is greater than the brightness threshold, the switch device in the light-emitting component is controlled to operate in the second state, so that the first light-emitting layer and the second light-emitting layer are connected to the driving circuit.

[0017] In a fourth aspect, an embodiment of the present application provides a control device for a display device, wherein the display device includes the light-emitting component provided in the embodiment of the first aspect, and the device includes:

[0018] a determination module, configured to determine display brightness information of a display device;

[0019] a first control module, configured to control the switch device in the light-emitting assembly to operate in a first state when the display brightness information is less than or equal to the brightness threshold, so that one of the first light-emitting layer and the second light-emitting layer is connected to the driving circuit and the other is short-circuited;

[0020] The second control module is used to control the switch device in the light-emitting component to operate in the second state when the display brightness information is greater than the brightness threshold, so that the first light-emitting layer and the second light-emitting layer are connected to the driving circuit.

[0021] In a fifth aspect, an embodiment of the present application provides an electronic device, including:

[0022] The display device provided by the embodiment of the second aspect; or

[0023] A processor and a memory, the memory storing programs or instructions that can be run on the processor, and when the programs or instructions are executed by the processor, the steps of the method for controlling the display device provided in the embodiment of the third aspect are implemented; or

[0024] A control device for a display device as provided in the fourth aspect embodiment.

[0025] In a sixth aspect, an embodiment of the present application provides a storage medium storing a program or instruction, which, when executed by a processor, implements the steps of the method for controlling a display device as provided in the embodiment of the third aspect.

[0026] In the seventh aspect, an embodiment of the present application provides a chip, which includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the control method of the display device provided in the embodiment of the third aspect.

[0027] In an eighth aspect, an embodiment of the present application provides a computer program product, which is stored in a storage medium and is executed by at least one processor to implement the steps of the control method of the display device provided in the embodiment of the third aspect.

[0028] In an embodiment of the present application, the light-emitting component includes a first light-emitting layer, a charge generating layer, a second light-emitting layer, a driving circuit and a switching device. The first light-emitting layer, the charge generating layer and the second light-emitting layer are arranged in series, the driving circuit and the first light-emitting layer are electrically connected, thereby driving the first light-emitting layer and the second light-emitting layer to emit light, the switching device and the charge generating layer are electrically connected, and the switching device has a first state and a second state. When the switching device is in the first state, one of the first light-emitting layer and the second light-emitting layer is connected to the driving circuit and the other is short-circuited, that is, only one of the first light-emitting layer and the second light-emitting layer emits light. Furthermore, at low brightness, when the switching device is in the second state, the first light-emitting layer and the second light-emitting layer are both connected to the driving circuit, that is, both the first light-emitting layer and the second light-emitting layer emit light.

[0029] As mentioned above, the light-emitting component provided in the present application has two working modes, one is single light-emitting layer light-emitting, and the other is dual light-emitting layers light-emitting at the same time. Then, when performing low-brightness light-emitting, the switching device can be operated in the first state, and only a single light-emitting layer is used for light-emitting. For example: the required brightness is 600 nits. When the dual light-emitting layers are illuminated at the same time, the brightness of the first light-emitting layer and the second light-emitting layer are both about 300 nits. When only one of the first light-emitting layer and the second light-emitting layer is illuminated, the brightness of the light-emitting layer is 600 nits. Therefore, the brightness of the single light-emitting layer can be increased by about 1 times at low brightness, so that the difference in luminous efficiency of light-emitting components of different colors is smaller, thereby reducing the difference in luminous efficiency of light-emitting components of different colors at low brightness, and making the luminous efficiency of light-emitting components of different colors more balanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of a light emitting assembly according to an embodiment of the present application is shown;

[0031] Figure 2 shows a circuit diagram of a light emitting assembly according to an embodiment of the present application;

[0032] Figure 3 A schematic diagram of a light emitting assembly according to an embodiment of the present application is shown;

[0033] Figure 4 shows a circuit diagram of a light emitting assembly according to an embodiment of the present application;

[0034] Figure 5 A schematic diagram of a light emitting assembly according to an embodiment of the present application is shown;

[0035] Figure 6 shows a circuit diagram of a light emitting assembly according to an embodiment of the present application;

[0036] Figure 7 A schematic diagram of a light emitting assembly according to an embodiment of the present application is shown;

[0037] Figure 8 shows a circuit diagram of a light emitting assembly according to an embodiment of the present application;

[0038] Figure 9 A schematic diagram of a light emitting assembly according to an embodiment of the present application is shown;

[0039] Figure 10 shows a circuit diagram of a light emitting assembly according to an embodiment of the present application;

[0040] Figure 11 A schematic diagram of a display device according to an embodiment of the present application is shown;

[0041] Figure 12 Shown Figure 11 A partial enlarged view of the display device shown at A;

[0042] Figure 13 A schematic diagram of a display device according to an embodiment of the present application is shown;

[0043] Figure 14 A schematic diagram of a display device according to an embodiment of the present application is shown;

[0044] Figure 15 A schematic diagram of a display device according to an embodiment of the present application is shown;

[0045] Figure 16 Shown Figure 15 A partial enlarged view of position B of the display device shown;

[0046] Figure 17 A schematic diagram of a display device according to an embodiment of the present application is shown;

[0047] Figure 18 Shown Figure 17 A partial enlarged view of a portion C of the display device shown;

[0048] Figure 19 A schematic diagram of a display device according to an embodiment of the present application is shown;

[0049] Figure 20 A schematic diagram of a display device according to an embodiment of the present application is shown;

[0050] Figure 21 A schematic diagram of a display device according to an embodiment of the present application is shown;

[0051] Figure 22 A flow chart showing a method for controlling a display device according to an embodiment of the present application is shown;

[0052] Figure 23 A schematic diagram illustrating a frame insertion method in a method for controlling a display device according to an embodiment of the present application is shown;

[0053] Figure 24 A structural block diagram of a control device for a display device according to an embodiment of the present application is shown;

[0054] Figure 25 shows a structural block diagram of an electronic device according to an embodiment of the present application;

[0055] Figure 26 A schematic diagram of the hardware structure of an electronic device implementing an embodiment of the present application is shown.

[0056] Figures 1 to 21 Reference numerals:

[0057] 100 light-emitting component, 110 first light-emitting layer, 120 charge generation layer, 1202 first charge generation layer, 1204 second charge generation layer, 130 second light-emitting layer, 140 driving circuit, 150 switching device, 1510 first switching element, 1512 first terminal, 1514 second terminal, 1520 second switching element, 1522 third terminal, 1524 fourth terminal, 1530 third switching element, 1532 fifth terminal, 1534 sixth terminal, 1540 fourth switching element, 1542 seventh terminal, 1544 eighth terminal, 1550 fifth switching element, 1552 ninth terminal End, 1554 tenth end, 160 negative electrode, 200 display device, 210 pixel defining layer, 212 first pixel defining layer, 214 second pixel defining layer, 220 flat layer, 222 first flat layer, 224 second flat layer, 230 interlayer dielectric layer, 240 gate insulating layer, 250 first passivation layer, 260 protective layer, 270 touch metal layer, 280 second passivation layer, 290 encapsulation layer, 300 third passivation layer, 310 polyimide layer, 320 first metal layer, 330 second metal layer, 340 third metal layer, 350 fourth metal layer, 360 fifth metal layer. DETAILED DESCRIPTION

[0058] 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.

[0059] 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 represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0060] In conjunction with the accompanying drawings, a light-emitting component, a display device, a control method, a device and an electronic device provided in the embodiments of the present application are described below through specific embodiments and their application scenarios.

[0061] First, as Figures 1 to 10 As shown, an embodiment of the present application provides a light-emitting component 100, including: a first light-emitting layer 110; a charge generation layer 120 (CGL), connected in series with the first light-emitting layer 110; a second light-emitting layer 130, connected in series with the charge generation layer 120; a driving circuit 140, electrically connected to the first light-emitting layer 110; a switching device 150, electrically connected to the charge generation layer 120, when the switching device 150 is in a first state, one of the first light-emitting layer 110 and the second light-emitting layer 130 is connected to the driving circuit 140, and the other is short-circuited; when the switching device 150 is in a second state, both the first light-emitting layer 110 and the second light-emitting layer 130 are connected to the driving circuit 140.

[0062] In an embodiment of the present application, the light-emitting component 100 includes a first light-emitting layer 110, a charge generation layer 120, a second light-emitting layer 130, a driving circuit 140 and a switching device 150. The first light-emitting layer 110, the charge generation layer 120 and the second light-emitting layer 130 are arranged in series, the driving circuit 140 and the first light-emitting layer 110 are electrically connected, thereby driving the first light-emitting layer 110 and the second light-emitting layer 130 to emit light, the switching device 150 and the charge generation layer 120 are electrically connected, and the switching device 150 has a first state and a second state. When the switching device 150 is in the first state, one of the first light-emitting layer 110 and the second light-emitting layer 130 is connected to the driving circuit 140, and the other is short-circuited, that is, only one of the first light-emitting layer 110 and the second light-emitting layer 130 emits light. Furthermore, at low brightness, when the switching device 150 is in the second state, the first light-emitting layer 110 and the second light-emitting layer 130 are both connected to the driving circuit 140, that is, the first light-emitting layer 110 and the second light-emitting layer 130 both emit light.

[0063] As mentioned above, the light-emitting component 100 provided in the present application has two working modes, one of which is single-light-emitting layer light-emitting, and the other is dual-light-emitting layer light-emitting at the same time. Then, when performing low-brightness light-emitting, the switching device 150 can be operated in the first state, and only a single light-emitting layer is used for light-emitting. For example, the required brightness is 600 nits. When the dual-light-emitting layers are simultaneously light-emitting, the brightness of the first light-emitting layer 110 and the second light-emitting layer 130 are both about 300 nits. When only one of the first light-emitting layer 110 and the second light-emitting layer 130 is light-emitting, the brightness of the light-emitting layer is 600 nits. Therefore, the brightness of the single light-emitting layer can be increased by about 1 times at low brightness, so that the difference in light-emitting efficiency of light-emitting components 100 of different colors is smaller, thereby reducing the difference in light-emitting efficiency of light-emitting components 100 of different colors at low brightness, and making the light-emitting efficiency of light-emitting components 100 of different colors more balanced.

[0064] The first light-emitting layer 110 and the second light-emitting layer 130 may be organic light-emitting semiconductors.

[0065] like Figure 1 and Figure 2 As shown, as a possible embodiment, the switching device 150 includes: a first switching element 1510, a first end 1512 of the first switching element 1510 is electrically connected to the charge generation layer 120, and a second end 1514 of the first switching element 1510 is used to be electrically connected to the negative electrode 160; wherein, when the switching device 150 is in the first state, the first switching element 1510 is in the open state, and when the switching device 150 is in the second state, the first switching element 1510 is in the closed state.

[0066] Specifically, the switching device 150 includes a first switching element 1510, which has a first end 1512 and a second end 1514. The first end 1512 of the first switching element 1510 is electrically connected to the charge generation layer 120, and the second end 1514 of the first switching element 1510 is used to electrically connect to the negative electrode 160. When the switching device 150 is in the first state, the first switching element 1510 is in an open state, and the first end 1512 and the second end 1514 are conductive. When the light-emitting component 100 is working, because the first switching element 1510 is directly connected to the charge generation layer 120 and the negative electrode 160, electrons no longer pass through the second light-emitting layer 130. Only the first light-emitting layer 110 is connected to the driving circuit 140 to emit light, and the second light-emitting layer 130 is short-circuited and no longer emits light, thereby realizing separate control of the first light-emitting layer 110 and the second light-emitting layer 130. Its structure is simple and easy to produce.

[0067] When the switch device 150 is in the second state, the first switch element 1510 is in the off state, the first terminal 1512 and the second terminal 1514 are disconnected, and when the light-emitting assembly 100 is in operation, the first light-emitting layer 110 and the second light-emitting layer 130 are both connected to the driving circuit 140 to emit light, thereby increasing the maximum brightness of the light-emitting assembly 100. The relationship between the on and off states of the first switch element 1510 and the on and off states of the first light-emitting layer 110 and the second light-emitting layer 130 is shown in Table 1 below.

[0068] Table 1

[0069]

[0070] As shown in Table 1, when the switching device 150 is in the first state, the first switching element 1510 is in the on state. In this state, the first light-emitting layer 110 emits light and the second light-emitting layer 130 is off, which is suitable for situations where the brightness is less than or equal to the brightness threshold. When the switching device 150 is in the second state, the first switching element 1510 is in the off state. In this state, the first light-emitting layer 110 emits light and the second light-emitting layer 130 emits light, which is suitable for situations where the brightness is greater than the brightness threshold.

[0071] The first switching element 1510 may be a transistor, and the first switching element 1510 and the charge generation layer 120 may be directly connected or indirectly connected via a conductive material, and the first switching element 1510 and the cathode 160 may be directly connected or indirectly connected via a conductive material.

[0072] like Figure 3 and Figure 4As shown, as a possible embodiment, the switching device 150 includes: a second switching element 1520, a third end 1522 of the second switching element 1520 is electrically connected to the charge generation layer 120, and a fourth end 1524 of the second switching element 1520 is electrically connected to the driving circuit 140; wherein, when the switching device 150 is in the first state, the second switching element 1520 is in the on state, and when the switching device 150 is in the second state, the second switching element 1520 is in the off state.

[0073] Specifically, the switching device 150 includes a second switching element 1520, and the second switching element 1520 has a third end 1522 and a fourth end 1524. The third end 1522 of the second switching element 1520 is electrically connected to the charge generation layer 120, and the fourth end 1524 of the second switching element 1520 is electrically connected to the driving circuit 140. When the switching device 150 is in the first state, the second switching element 1520 is in an open state, and the third end 1522 and the fourth end 1524 are turned on. When the light-emitting component 100 is working, because the second switching element 1520 is directly connected to the driving circuit 140 and the charge generation layer 120, electrons no longer pass through the first light-emitting layer 110. Only the second light-emitting layer 130 is connected to the driving circuit 140 to emit light. The first light-emitting layer 110 is short-circuited and no longer emits light, thereby realizing separate control of the first light-emitting layer 110 and the second light-emitting layer 130. Its structure is simple and easy to produce.

[0074] When the switch device 150 is in the second state, the second switch element 1520 is in the off state, the third terminal 1522 and the fourth terminal 1524 are disconnected, and when the light-emitting assembly 100 is in operation, the first light-emitting layer 110 and the second light-emitting layer 130 are both connected to the driving circuit 140 to emit light, thereby increasing the maximum brightness of the light-emitting assembly 100. The relationship between the on and off states of the second switch element 1520 and the on and off states of the first light-emitting layer 110 and the second light-emitting layer 130 is shown in Table 2 below.

[0075] Table 2

[0076]

[0077] As shown in Table 1, when the switching device 150 is in the first state, the second switching element 1520 is in the on state. In this state, the first light-emitting layer 110 is off and the second light-emitting layer 130 emits light, which is suitable for situations where the brightness is less than or equal to the brightness threshold. When the switching device 150 is in the second state, the second switching element 1520 is in the off state. In this state, the first light-emitting layer 110 emits light and the second light-emitting layer 130 emits light, which is suitable for situations where the brightness is greater than the brightness threshold.

[0078] The second switching element 1520 may be a transistor, and the second switching element 1520 and the charge generation layer 120 may be directly connected or indirectly connected via a conductive material, and the second switching element 1520 and the driving circuit 140 may be directly connected or indirectly connected via a conductive material.

[0079] like Figure 5 and Figure 6 As shown in FIG. 1 , as a possible embodiment, when the switching device 150 is in the third state, the first light-emitting layer 110 and the second light-emitting layer 130 are in an open state, the charge generation layer 120 includes: a first charge generation layer 1202 and a second charge generation layer 1204, the first light-emitting layer 110, the first charge generation layer 1202, the second charge generation layer 1204 and the second light-emitting layer 130 are arranged in series, and the switching device 150 further includes: a third switching element 1530, the first charge generation layer 1202 and the second charge generation layer 1204 are connected in series via the third switching element 1530. The fifth end 1532 of the third switching element 1530 is electrically connected to the first charge generation layer 1202, and the sixth end 1534 of the third switching element 1530 is electrically connected to the second charge generation layer 1204; wherein, when the switching device 150 is in the first state, the third switching element 1530 is in an on state or an off state, when the switching device 150 is in the second state, the third switching element 1530 is in an on state, and when the switching device 150 is in the third state, the first switching element 1510 is in an off state, and the third switching element 1530 is in an off state.

[0080] Specifically, when the switching device 150 is in the third state, the first light-emitting layer 110 and the second light-emitting layer 130 are in an open circuit state, that is, the first light-emitting layer 110 and the second light-emitting layer 130 are both in a non-luminous state, thereby achieving a light-off state, and then the light-emitting component 100 is turned off without switching the driving circuit 140, thereby improving the service life and stability of the light-emitting component 100.

[0081] The charge generation layer 120 includes a first charge generation layer 1202 and a second charge generation layer 1204, the first light-emitting layer 110, the first charge generation layer 1202, the second charge generation layer 1204 and the second light-emitting layer 130 are arranged in series, the switching device 150 includes a first switching element 1510 and a third switching element 1530, the first charge generation layer 1202 and the second charge generation layer 1204 are connected in series through the third switching element 1530, that is, the first light-emitting layer 110, the first charge generation layer 1202, the third switching element 1530, the second charge generation layer 1204 and the second light-emitting layer 130 are connected in series in sequence.

[0082] The first switching element 1510 has a first end 1512 and a second end 1514. The first end 1512 of the first switching element 1510 is electrically connected to the first charge generation layer 1202 or the second charge generation layer, and the second end 1514 of the first switching element 1510 is electrically connected to the negative electrode 160. The third switching element 1530 has a fifth end 1532 and a sixth end 1534. The fifth end 1532 of the third switching element 1530 is electrically connected to the first charge generation layer 1202, and the sixth end 1534 of the third switching element 1530 is electrically connected to the second charge generation layer 1204.

[0083] When the switching device 150 is in the first state, the first switching element 1510 is in the open state, the first end 1512 and the second end 1514 are turned on, the third switching element 1530 is in the open state or the closed state, the fifth end 1532 and the sixth end 1534 are turned on or off, and then when the light-emitting component 100 is working, because the first switching element 1510 is directly connected to the first charge generating layer 1202 and the negative electrode 160, the electrons no longer pass through the second light-emitting layer 130, and the state of the third switching element 1530 will not affect the first light-emitting layer 110, so the third switching element 1530 can be in the open state or the closed state, only the first light-emitting layer 110 is connected to the driving circuit 140 to emit light, and the second light-emitting layer 130 is short-circuited and no longer emits light, thereby realizing separate control of the first light-emitting layer 110 and the second light-emitting layer 130. Its structure is simple and easy to produce.

[0084] When the switching device 150 is in the second state, the first switching element 1510 is in the off state, the first end 1512 and the second end 1514 are disconnected, the third switching element 1530 is in the on state, the fifth end 1532 and the sixth end 1534 are turned on, and then when the light-emitting component 100 is working, the first light-emitting layer 110 and the second light-emitting layer 130 are both connected to the driving circuit 140 to emit light, thereby improving the extreme brightness of the light-emitting component 100.

[0085] When the switching device 150 is in the third state, the first switching element 1510 is in the off state, the first end 1512 and the second end 1514 are disconnected, the third switching element 1530 is in the off state, the fifth end 1532 and the sixth end 1534 are disconnected, thereby disconnecting the first light-emitting layer 110 and the second light-emitting layer 130, so that the first light-emitting layer 110 and the second light-emitting layer 130 are in an open circuit state and cannot form a loop, and thus the first light-emitting layer 110 and the second light-emitting layer 130 will not emit light.

[0086] By switching the state of the switching device 150, various operating modes of the first light-emitting layer 110 and the second light-emitting layer 130 can be achieved. Furthermore, these operating modes do not require switching via the driving circuit 140, thereby improving the stability of the control of the light-emitting component 100. The relationship between the on / off states of the first switching element 1510, the on / off states of the third switching element 1530, and the on / off states of the first light-emitting layer 110 and the second light-emitting layer 130 is shown in Table 3 below.

[0087] Table 3

[0088]

[0089] As shown in Table 3, when the switching device 150 is in the first state (a), the first switching element 1510 is in the on state and the third switching element 1530 is in the on state. In this state, the first light-emitting layer 110 emits light and the second light-emitting layer 130 is off. It is suitable for the case where the brightness is less than or equal to the brightness threshold. When the switching device 150 is in the first state (b), the first switching element 1510 is in the on state and the third switching element 1530 is in the off state. In this state, the first light-emitting layer 110 emits light and the second light-emitting layer 130 is off. It is suitable for the case where the brightness is less than or equal to the brightness threshold. In the case of a brightness threshold, when the switching device 150 is in the second state, the first switching element 1510 is in an off state, and the third switching element 1530 is in an on state. In this state, the first light-emitting layer 110 emits light, and the second light-emitting layer 130 emits light. It is suitable for a case where the brightness is greater than the brightness threshold. When the switching device 150 is in the third state, the first switching element 1510 is in an off state, and the third switching element 1530 is in an off state. In this state, the first light-emitting layer 110 is off, and the second light-emitting layer 130 is off, which is suitable for an interpolation mode to generate a black screen.

[0090] The third switching element 1530 may be a transistor, and the third switching element 1530 and the first charge generation layer 1202 may be directly connected or indirectly connected through a conductive material, and the third switching element 1530 and the second charge generation layer 1204 may be directly connected or indirectly connected through a conductive material.

[0091] like Figure 7 and Figure 8As shown, as a possible embodiment, when the switching device 150 is in the third state, the first light-emitting layer 110 and the second light-emitting layer 130 are in an open state, the charge generation layer 120 includes: a first charge generation layer 1202 and a second charge generation layer 1204, and the first light-emitting layer 110, the first charge generation layer 1202, the second charge generation layer 1204 and the second light-emitting layer 130 are arranged in series, and the switching device 150 further includes: a fourth switching element 1540, and the first charge generation layer 1202 and the second charge generation layer 1204 are connected in series via the fourth switching element 1540. The seventh end 1542 of the fourth switch element 1540 is electrically connected to the first charge generation layer 1202, and the eighth end 1544 of the fourth switch element 1540 is electrically connected to the second charge generation layer 1204; wherein, when the switch device 150 is in the first state, the fourth switch element 1540 is in the open state; when the switch device 150 is in the second state, the fourth switch element 1540 is in the open state; when the switch device 150 is in the third state, the second switch element 1520 is in the open state or the closed state, and the fourth switch element 1540 is in the closed state.

[0092] Specifically, when the switching device 150 is in the third state, the first light-emitting layer 110 and the second light-emitting layer 130 are in an open circuit state, that is, the first light-emitting layer 110 and the second light-emitting layer 130 are both in a non-luminous state, thereby achieving a light-off state, and then the light-emitting component 100 is turned off without switching the driving circuit 140, thereby improving the service life and stability of the light-emitting component 100.

[0093] The charge generation layer 120 includes a first charge generation layer 1202 and a second charge generation layer 1204, the first light-emitting layer 110, the first charge generation layer 1202, the second charge generation layer 1204 and the second light-emitting layer 130 are arranged in series, the switching device 150 includes a second switching element 1520 and a fourth switching element 1540, the first charge generation layer 1202 and the second charge generation layer 1204 are connected in series through the fourth switching element 1540, that is, the first light-emitting layer 110, the first charge generation layer 1202, the fourth switching element 1540, the second charge generation layer 1204 and the second light-emitting layer 130 are connected in series in sequence.

[0094] The second switching element 1520 has a third terminal 1522 and a fourth terminal 1524. The third terminal 1522 of the second switching element 1520 is electrically connected to the first charge generation layer 1202 or the second charge generation layer, and the fourth terminal 1524 of the second switching element 1520 is electrically connected to the driving circuit 140. The fourth switching element 1540 has a seventh terminal 1542 and an eighth terminal 1544. The seventh terminal 1542 of the fourth switching element 1540 is electrically connected to the first charge generation layer 1202, and the eighth terminal 1544 of the fourth switching element 1540 is electrically connected to the second charge generation layer 1204.

[0095] When the switching device 150 is in the first state, the second switching element 1520 is in the open state, the first end 1512 and the second end 1514 are turned on, the fourth switching element 1540 is in the open state, the seventh end 1542 and the eighth end 1544 are turned on, and then when the light-emitting component 100 is working, because the second switching element 1520 is directly connected to the driving circuit 140 and the first charge generating layer 1202, the electrons no longer pass through the first light-emitting layer 110, and the fourth switching element 1540 is in the open state, so that the driving circuit 140, the second light-emitting layer 130 and the negative electrode 160 can form a loop, only the second light-emitting layer 130 is connected to the driving circuit 140 to emit light, and the first light-emitting layer 110 is short-circuited and no longer emits light, thereby realizing separate control of the first light-emitting layer 110 and the second light-emitting layer 130. Its structure is simple and easy to produce.

[0096] When the switching device 150 is in the second state, the second switching element 1520 is in the off state, the first end 1512 and the second end 1514 are disconnected, the fourth switching element 1540 is in the on state, the seventh end 1542 and the eighth end 1544 are turned on, and then when the light-emitting component 100 is working, the first light-emitting layer 110 and the second light-emitting layer 130 are both connected to the driving circuit 140 to emit light, thereby improving the extreme brightness of the light-emitting component 100.

[0097] When the switching device 150 is in the third state, the second switching element 1520 is in the on state or the off state, the first end 1512 and the second end 1514 are turned on or off, the fourth switching element 1540 is in the off state, and the seventh end 1542 and the eighth end 1544 are turned off, so that the first light-emitting layer 110 and the second light-emitting layer 130 are in an open circuit state and cannot form a loop, and thus the first light-emitting layer 110 and the second light-emitting layer 130 will not emit light.

[0098] By switching the state of the switching device 150, various operating modes of the first light-emitting layer 110 and the second light-emitting layer 130 can be achieved. Furthermore, these operating modes do not require switching via the driving circuit 140, thereby improving the stability of the control of the light-emitting component 100. The relationship between the on / off states of the second switching element 1520, the on / off states of the fourth switching element 1540, and the on / off states of the first light-emitting layer 110 and the second light-emitting layer 130 is shown in Table 4 below.

[0099] Table 4

[0100]

[0101] As shown in Table 4, when the switch device 150 is in the first state, the second switch element 1520 is in the on state, and the fourth switch element 1540 is in the on state. In this state, the first light-emitting layer 110 is off and the second light-emitting layer 130 emits light, which is suitable for the case where the brightness is less than or equal to the brightness threshold. When the switch device 150 is in the second state, the second switch element 1520 is in the off state, and the fourth switch element 1540 is in the on state. In this state, the first light-emitting layer 110 emits light and the second light-emitting layer 130 emits light, which is suitable for the case where the brightness is greater than the brightness threshold. In the third state, when the switching device 150 is in the third state (a), the second switching element 1520 is in the off state, and the fourth switching element 1540 is in the off state. In this state, the first light-emitting layer 110 is off, and the second light-emitting layer 130 is off, which is suitable for the interpolation mode to generate a black screen. When the switching device 150 is in the third state (b), the second switching element 1520 is in the on state, and the fourth switching element 1540 is in the off state. In this state, the first light-emitting layer 110 is off, and the second light-emitting layer 130 is off, which is suitable for the interpolation mode to generate a black screen.

[0102] The fourth switching element 1540 may be a transistor, and the fourth switching element 1540 and the first charge generation layer 1202 may be directly connected or indirectly connected via a conductive material, and the fourth switching element 1540 and the second charge generation layer 1204 may be directly connected or indirectly connected via a conductive material.

[0103] like Figure 9 and Figure 10As shown, as a possible embodiment, when the switching device 150 is in the third state, the first light-emitting layer 110 and the second light-emitting layer 130 are in an open state, the charge generation layer 120 includes: a first charge generation layer 1202 and a second charge generation layer 1204, the first light-emitting layer 110, the first charge generation layer 1202, the second charge generation layer 1204 and the second light-emitting layer 130 are arranged in series, and the switching device 150 also includes: a fifth switching element 1550, the ninth end 1552 of the fifth switching element 1550 is electrically connected to the first charge generation layer 1202 or the second charge generation layer, and the tenth end 1554 of the fifth switching element 1550 is used to be electrically connected to the negative electrode 160; wherein, when the switching device 150 is in the first state, the fifth switching element 1550 is in an off state, when the switching device 150 is in the second state, the fifth switching element 1550 is in an off state, and when the switching device 150 is in the third state, the second switching element 1520 is in an on state, and the fifth switching element 1550 is in an on state.

[0104] Specifically, when the switching device 150 is in the third state, the first light-emitting layer 110 and the second light-emitting layer 130 are in an open circuit state, that is, the first light-emitting layer 110 and the second light-emitting layer 130 are both in a non-luminous state, thereby achieving a light-off state, and then the light-emitting component 100 is turned off without switching the driving circuit 140, thereby improving the service life and stability of the light-emitting component 100.

[0105] The charge generation layer 120 includes a first charge generation layer 1202 and a second charge generation layer 1204 . The first light-emitting layer 110 , the first charge generation layer 1202 , the second charge generation layer 1204 and the second light-emitting layer 130 are arranged in series. The switching device 150 includes a second switching element 1520 and a fifth switching element 1550 .

[0106] The second switching element 1520 has a third terminal 1522 and a fourth terminal 1524. The third terminal 1522 of the second switching element 1520 is electrically connected to the first charge generation layer 1202 or the second charge generation layer 1204, and the fourth terminal 1524 of the second switching element 1520 is electrically connected to the driving circuit 140. The fifth switching element 1550 has a ninth terminal 1552 and a tenth terminal 1554. The eighth terminal 1544 of the fifth switching element 1550 is electrically connected to the first charge generation layer 1202 or the second charge generation layer 1204, and the tenth terminal 1554 of the fifth switching element 1550 is electrically connected to the negative electrode 160.

[0107] When the switching device 150 is in the first state, the second switching element 1520 is in the open state, the third end 1522 and the fourth end 1524 are turned on, the fifth switching element 1550 is in the closed state, and the seventh end 1542 and the eighth end 1544 are disconnected. When the light-emitting component 100 is working, since the second switching element 1520 is directly connected to the driving circuit 140 and the first charge generating layer 1202, the electrons no longer pass through the first light-emitting layer 110, and the fifth switching element 1550 is in the closed state, the driving circuit 140, the second light-emitting layer 130 and the negative electrode 160 can form a loop, and only the second light-emitting layer 130 is connected to the driving circuit 140 to emit light, and the first light-emitting layer 110 is short-circuited and no longer emits light, thereby realizing separate control of the first light-emitting layer 110 and the second light-emitting layer 130. Its structure is simple and easy to produce.

[0108] When the switching device 150 is in the second state, the second switching element 1520 is in the off state, the third end 1522 and the fourth end 1524 are disconnected, the fifth switching element 1550 is in the off state, the ninth end 1552 and the tenth end 1554 are disconnected, and then when the light-emitting component 100 is working, the first light-emitting layer 110 and the second light-emitting layer 130 are both connected to the driving circuit 140 to emit light, thereby improving the extreme brightness of the light-emitting component 100.

[0109] When the switching device 150 is in the third state, the second switching element 1520 is in the open state, and the third end 1522 and the fourth end 1524 are turned on. When the light-emitting component 100 is working, the second switching element 1520 is directly connected to the driving circuit 140 and the first charge generation layer 1202, and the electrons no longer pass through the first light-emitting layer 110. The fifth switching element 1550 is in the open state. When the light-emitting component 100 is working, the fifth switching element 1550 is directly connected to the first charge generation layer 1202 and the negative electrode 160, and the electrons no longer pass through the second light-emitting layer 130. The first light-emitting layer 110 and the second light-emitting layer 130 are both short-circuited, and the first light-emitting layer 110 and the second light-emitting layer 130 do not emit light.

[0110] By switching the state of the switching device 150, various operating modes of the first light-emitting layer 110 and the second light-emitting layer 130 can be achieved. Furthermore, these operating modes do not require switching via the driving circuit 140, thereby improving the stability of the control of the light-emitting component 100. The relationship between the on / off states of the second switching element 1520, the on / off states of the fifth switching element 1550, and the on / off states of the first light-emitting layer 110 and the second light-emitting layer 130 is shown in Table 5 below.

[0111] Table 5

[0112]

[0113] As shown in Table 5, when the switching device 150 is in the first state (a), the second switching element 1520 is in the on state and the fifth switching element 1550 is in the off state. In this state, the first light-emitting layer 110 is off and the second light-emitting layer 130 emits light, which is suitable for the case where the brightness is less than or equal to the brightness threshold. When the switching device 150 is in the first state (b), the second switching element 1520 is in the off state and the fifth switching element 1550 is in the on state. In this state, the first light-emitting layer 110 emits light and the second light-emitting layer 130 is off, which is suitable for the case where the brightness is less than or equal to the brightness threshold. In the case of a brightness threshold, when the switching device 150 is in the second state, the second switching element 1520 is in the off state, and the fifth switching element 1550 is in the off state. In this state, the first light-emitting layer 110 emits light, and the second light-emitting layer 130 emits light, which is suitable for a case where the brightness is greater than the brightness threshold. When the switching device 150 is in the third state, the second switching element 1520 is in the on state, and the fifth switching element 1550 is in the off state. In this state, the first light-emitting layer 110 is off, and the second light-emitting layer 130 is off, which is suitable for an interpolation mode to generate a black screen.

[0114] The fifth switching element 1550 may be a transistor, and the fifth switching element 1550 and the first charge generation layer 1202 or the second charge generation layer 1204 may be directly connected or indirectly connected through a conductive material, and the fifth switching element 1550 and the cathode 160 may be directly connected or indirectly connected through a conductive material.

[0115] like Figure 1 and Figure 3 As shown, as a possible implementation, the first light-emitting layer 110 , the charge generation layer 120 and the second light-emitting layer 130 are stacked.

[0116] Specifically, the first light-emitting layer 110, the charge generation layer 120, and the second light-emitting layer 130 are stacked, thereby reducing the occupied area of ​​the light-emitting component 100 and helping to improve the resolution of the display device 200. The first light-emitting layer 110 and the second light-emitting layer 130 together form a pixel.

[0117] like Figure 5 、 Figure 7 and Figure 9 As shown, as a possible implementation, the first light-emitting layer 110 and the second light-emitting layer 130 are staggered.

[0118] Specifically, the first light-emitting layer 110 and the second light-emitting layer 130 are staggered, thereby reducing the loss caused by stacking the first light-emitting layer 110 and the second light-emitting layer 130 and further improving the light-emitting brightness of the light-emitting component 100.

[0119] That is, the first light-emitting layer 110 and the second light-emitting layer 130 are not arranged vertically, but rather in a stacked structure arranged side by side in series. The upper first light-emitting layer 110 does not vertically block the lower second light-emitting layer 130, thereby improving the problem of large differences in luminous efficiency between different colors under low light conditions, while further improving brightness and luminous efficiency. The first light-emitting layer 110 and the second light-emitting layer 130 are arranged horizontally and in layers, so that the second light-emitting layer 130 does not block the first light-emitting layer 110, forming a series structure. Light from the first light-emitting layer 110 does not need to pass through the second light-emitting layer 130 to be emitted, thereby improving the luminous efficiency of the light-emitting component 100.

[0120] The first light-emitting layer 110 forms a pixel, and the second light-emitting layer 130 forms a pixel.

[0121] As a possible implementation, the driving circuit 140 may adopt a 7T1C or 2T1C structure, wherein 7T1C uses 7 switches to control one light-emitting unit, and the first light-emitting layer 110 and the second light-emitting layer 130 form a light-emitting unit. Figure 2 、 Figure 4 、 Figure 6 、 Figure 8 and Figure 10 As shown, the seven switches are T1, T2, T3, T4, T5, T6 and T7, wherein gate(n), gate(n-1), EM(n), cont(n), cont1(n) and cont2(n) represent control signals, ELVSS represents the negative power supply 160, Vdate(m) and Vinit represent voltages, ELVDD represents the power supply voltage, and Cst represents capacitance.

[0122] 2T1C uses two switches to control one light-emitting unit. The first light-emitting layer 110 and the second light-emitting layer 130 form a light-emitting unit. This application can control the two first light-emitting layers 110 and the second light-emitting layer 130 connected in series by adding one or two switching elements. They can emit light at the same time, or only one of them can emit light. The position layout of the light-emitting layer can also be adjusted to improve the brightness of the light and improve the technical problem of poor luminous efficiency of light-emitting components 100 of different colors under low brightness.

[0123] Specifically, a switch element is added to the structure of the first light-emitting layer 110 and the second light-emitting layer 130 connected in series. By controlling the switch element, the first light-emitting layer 110 and the second light-emitting layer 130 can emit light at the same time, or only one of them can emit light.

[0124] In the structure of the first light-emitting layer 110 and the second light-emitting layer 130 connected in series, two switching elements are added. By controlling the switching elements, the first light-emitting layer 110 and the second light-emitting layer 130 can emit light at the same time, or only one of them can emit light, or both can be extinguished.

[0125] Second, as Figures 11 to 21 As shown, an embodiment of the present application provides a display device 200, comprising: at least one light-emitting component 100 provided in the embodiment of the first aspect.

[0126] The display device 200 provided in the present application includes the light-emitting component 100 provided in the first embodiment, and therefore has all the beneficial effects of the light-emitting component 100 provided in the first embodiment, which will not be described one by one here.

[0127] In the case of adding the first switching element 1510 or the second switching element 1520, the pixel arrangement of the display device 200 can be as follows: Figure 11 and Figure 12 As shown, in the case of adding the first switching element 1510 and the third switching element 1530, the second switching element 1520 and the fourth switching element 1540, or the second switching element 1520 and the fifth switching element 1550, the pixel arrangement of the display device 200 can be as follows: Figure 15 、 Figure 16 、 Figure 17 and Figure 18 As shown, Figure 15 and Figure 16 shows the situation where the first light-emitting layer 110 and the second light-emitting layer 130 emit light simultaneously, Figure 17 and Figure 18 The case where only one of the first light-emitting layer 110 and the second light-emitting layer 130 emits light is shown.

[0128] Furthermore, under low brightness conditions, the light emission of a single light-emitting layer can be controlled. Under the conditions of limited space for the 7T1C structure and the more complex driving circuit 140, problems such as large color difference and uniform brightness of the display device 200 under low brightness conditions can be improved, thereby improving the display effect of the display device 200 and increasing the yield rate of the display device 200.

[0129] like Figure 13 、 Figure 14 、 Figure 19 、 Figure 20 and Figure 21As shown, as a possible embodiment, the display device 200 further includes: a pixel definition layer (PDL) 210, in which the first light-emitting layer 110, the charge generation layer 120 and the second light-emitting layer 130 of the light-emitting component 100 are arranged; a planarization (PLN) layer 220, which is arranged on one side of the pixel definition layer 210; an inter-layer dielectric (ILD) layer 230, which is arranged on the side of the planarization layer 220 away from the pixel definition layer 210; a gate insulation (GI) layer 240, which is arranged on the side of the inter-layer dielectric layer 230 away from the planarization layer 220, and the switching device 150 of the light-emitting component 100 is embedded in the gate insulation layer 240; and a first passivation (PVX) layer 250, which is arranged on the side of the gate insulation layer 240 away from the inter-layer dielectric layer 230, and the switching device 150 and the first passivation layer 250 are arranged opposite to each other.

[0130] Specifically, the display device 200 also includes a pixel defining layer 210, a planarizing layer 220, an interlayer dielectric layer 230, a gate insulating layer 240 and a first passivation layer 250 stacked on one side. The first light-emitting layer 110, the charge generating layer 120 and the second light-emitting layer 130 of the light-emitting component 100 are arranged in the pixel defining layer 210, and the switching device 150 of the light-emitting component 100 is embedded in the gate insulating layer 240.

[0131] Specifically, the gate insulating layer 240 has a groove on the side facing away from the interlayer dielectric layer 230, and the switching device 150 of the light-emitting component 100 is arranged in the groove, thereby reducing the space occupied by the switching device 150. The gate insulating layer 240 has a groove on the side facing away from the interlayer dielectric layer 230, and the switching device 150 of the light-emitting component 100 is arranged in the groove, thereby reducing the space occupied by the switching device 150.

[0132] The switching device 150 and other components may be connected via metal layers.

[0133] like Figure 13 、 Figure 14 、 Figure 19 、 Figure 20 and Figure 21 As shown, as a possible embodiment, the pixel defining layer 210 includes a first pixel defining layer 212 and a second pixel defining layer 214, the first light-emitting layer 110 is located in the first pixel defining layer 212, and the second light-emitting layer 130 is located in the second pixel defining layer 214; the flat layer 220 includes a first flat layer 222 and a second flat layer 224.

[0134] like Figure 13 、 Figure 14 、 Figure 19 、 Figure 20 and Figure 21 As shown, as a possible implementation, it also includes: a third passivation layer 300, arranged on the side of the pixel defining layer 210 away from the flat layer 220; a thin film encapsulation (TFE) layer 290, arranged on the side of the third passivation layer 300 away from the pixel defining layer 210; a second passivation layer 280, arranged on the side of the encapsulation layer 290 away from the third passivation layer 300; a protective layer (over coating) 260, arranged on the side of the second passivation layer 280 away from the encapsulation layer 290; a touch metal (TP metal) layer 270, arranged in the protective layer 260 and adhered to the second passivation layer 280; and a polyimide (PI) layer 310, arranged on the side of the first passivation layer 250 away from the gate insulating layer 240.

[0135] The gate insulating layer 240 , the interlayer dielectric layer 230 , the first passivation layer 250 , the second passivation layer 280 and the third passivation layer 300 may be inorganic materials, such as a single layer or multilayer structure of silicon oxide, silicon dioxide, silicon nitride, silicon oxynitride, aluminum oxide or zirconium dioxide.

[0136] The protective layer 260 , the pixel defining layer 210 , the platform layer, the polyimide layer 310 and the encapsulation layer 290 may be organic materials, for example, one or more layers of organic materials such as polyimide, resin, or polymer.

[0137] like Figure 13 、 Figure 14 、 Figure 19 、 Figure 20 and Figure 21 As shown, as a possible embodiment, it also includes: a first metal layer 320, a second metal layer 330, a third metal layer 340, a fourth metal layer 350 and a fifth metal layer 360, and the connection between the first light-emitting layer 110, the charge generation layer 120, the second light-emitting layer 130, the driving circuit 140 and the switching device 150 can be connected through the first metal layer 320, the second metal layer 330, the third metal layer 340, the fourth metal layer 350 and the fifth metal layer 360.

[0138] The first metal layer 320 , the second metal layer 330 , the third metal layer 340 , the fourth metal layer 350 and the fifth metal layer 360 may be a single layer or multilayer structure of metals such as titanium, aluminum, titanium, molybdenum, silver and copper.

[0139] In a third aspect, an embodiment of the present application provides a method for controlling a display device, wherein the display device includes a light-emitting component as provided in the embodiment of the first aspect, Figure 22 FIG. 1 is a flow chart showing a method for controlling a display device according to an embodiment of the present application. Figure 22 As shown, the method includes:

[0140] Step 2202: Determine display brightness information of the display device.

[0141] Specifically, the current display brightness information of the display device may be monitored.

[0142] Step 2204: When the displayed brightness information is less than or equal to the brightness threshold, control the switch device in the light-emitting component to operate in the first state, so that one of the first light-emitting layer and the second light-emitting layer is connected to the driving circuit and the other is short-circuited.

[0143] Specifically, when the user sets the display brightness information to be less than or equal to the brightness threshold, the switching device in the light-emitting component is controlled to operate in the first state, so that one of the first light-emitting layer and the second light-emitting layer is connected to the driving circuit and the other is short-circuited, thereby making one of the first light-emitting layer and the second light-emitting layer operate at the brightness corresponding to the display brightness information, thereby reducing the difference in luminous efficiency between light-emitting components of different colors, thereby reducing the color difference of the display device.

[0144] Step 2206: When the displayed brightness information is greater than the brightness threshold, the switch device in the light-emitting component is controlled to operate in the second state, so that the first light-emitting layer and the second light-emitting layer are connected to the driving circuit.

[0145] When the user sets the display brightness information to be greater than the brightness threshold, the switching device in the light-emitting component is controlled to operate in the second state, so that the first light-emitting layer and the second light-emitting layer are both connected to the driving circuit, and then the first light-emitting layer and the second light-emitting layer only need to operate at half the brightness corresponding to the display brightness information, thereby improving the service life of the first light-emitting layer and the second light-emitting layer and improving the luminous efficiency of the first light-emitting layer and the second light-emitting layer.

[0146] The present application switches the working mode of the light-emitting component at different brightnesses. When emitting light at low brightness, the switching device can operate in the first state and only use a single light-emitting layer for light emission. For example, the required brightness is 600 nits. When the two light-emitting layers emit light at the same time, the brightness of the first light-emitting layer and the second light-emitting layer are both about 300 nits. When only one of the first light-emitting layer and the second light-emitting layer emits light, the brightness of the light-emitting layer is 600 nits. Therefore, the brightness of the single light-emitting layer can be increased by about 1 times at low brightness, so that the difference in luminous efficiency of light-emitting components of different colors is smaller, thereby reducing the difference in luminous efficiency of light-emitting components of different colors at low brightness, reducing the color difference of the display device, and, at high brightness, the service life of the first light-emitting layer and the second light-emitting layer can be improved, and the luminous efficiency of the first light-emitting layer and the second light-emitting layer can be improved.

[0147] As a possible implementation, the method further includes: when the display device plays in interpolation mode, between two adjacent frames of images, controlling the switching device to operate in a third state so that the first light-emitting layer and the second light-emitting layer are in an open state.

[0148] Specifically, when the display device is playing in interpolation mode, between two adjacent frames of images, the switching device is controlled to operate in the third state, so that the first light-emitting layer and the second light-emitting layer are in an open-circuit state, and the entire display device is in a black screen state, thereby realizing interpolation and improving the smoothness of the user's viewing experience.

[0149] By controlling the switching device, the first light-emitting layer and the second light-emitting layer can all be working, one working, or all off, so that the black screen displayed by the first light-emitting layer and the second light-emitting layer can be turned off, and then the black screen can be used for interpolation. The newly added switching device is used to directly turn off the first light-emitting layer and the second light-emitting layer, so that the entire display device displays a black screen, and the black screen can be equivalent to an interpolation display, thereby eliminating the need for frequent switching of the driving circuit, reducing the power consumption of the display device, and improving the service life of the display device. In addition, the visual experience of the picture can be smoother.

[0150] like Figure 23 As shown, a black frame of the Mth interpolated frame is inserted between the N-1th frame and the Nth frame, and a black frame of the M+1th interpolated frame is inserted between the Nth frame and the N+1th frame, thereby doubling the frame rate and providing a smoother viewing experience for the human eye.

[0151] The control method of the display device provided in the embodiment of the present application can be executed by the control device of the display device. In the embodiment of the present application, the control device of the display device is used as an example to illustrate the device for the control method of the display device provided in the embodiment of the present application.

[0152] like Figure 24 As shown, in the fourth aspect, the present application provides a control device 2400 for a display device, and the display device includes a light-emitting component provided by the embodiment of the first aspect, and the device includes: a determination module 2402, for determining the display brightness information of the display device; a first control module 2404, for controlling the switching device in the light-emitting component to operate in a first state when the display brightness information is less than or equal to the brightness threshold, so that one of the first light-emitting layer and the second light-emitting layer is connected to the drive circuit and the other is short-circuited; a second control module 2406, for controlling the switching device in the light-emitting component to operate in a second state when the display brightness information is greater than the brightness threshold, so that the first light-emitting layer and the second light-emitting layer are connected to the drive circuit.

[0153] The present application switches the working mode of the light-emitting component at different brightnesses. When emitting light at low brightness, the switching device can operate in the first state and only use a single light-emitting layer for light emission. For example, the required brightness is 600 nits. When the two light-emitting layers emit light at the same time, the brightness of the first light-emitting layer and the second light-emitting layer are both about 300 nits. When only one of the first light-emitting layer and the second light-emitting layer emits light, the brightness of the light-emitting layer is 600 nits. Therefore, the brightness of the single light-emitting layer can be increased by about 1 times at low brightness, so that the difference in luminous efficiency of light-emitting components of different colors is smaller, thereby reducing the difference in luminous efficiency of light-emitting components of different colors at low brightness, reducing the color difference of the display device, and, at high brightness, the service life of the first light-emitting layer and the second light-emitting layer can be improved, and the luminous efficiency of the first light-emitting layer and the second light-emitting layer can be improved.

[0154] As a possible embodiment, the device also includes: a third control module, which is used to control the switching device to operate in a third state between two adjacent frames of images when the display device is playing in interpolation mode, so that the first light-emitting layer and the second light-emitting layer are in an open state.

[0155] The control device of the display device in the embodiment of the present application can be an electronic device or a component in the electronic device, such as an integrated circuit or chip. The electronic device can be a terminal or a device other than an electronic device. For example, the electronic device can be a mobile phone, a tablet computer, a laptop computer, a PDA, an in-vehicle electronic device, a private network communication terminal device (such as a walkie-talkie), a mobile Internet device (Mobile Internet Device, MID), an augmented reality / virtual reality / mixed reality device, a robot, a wearable device, an ultra-mobile personal computer (Ultra-mobile personal computer, UMPC), a netbook or a personal digital assistant (Personal Digital Assistant, PDA), etc. It can also be a server, a network attached storage (Network Attached Storage, NAS), a personal computer (Personal Computer, PC), a television (Television, TV), an ATM or a self-service machine, etc., and the embodiment of the present application does not make specific limitations.

[0156] The control device of the display device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.

[0157] The control device of the display device provided in the embodiment of the present application can implement each process implemented in the above method embodiment and achieve the same technical effect. To avoid repetition, it will not be described here.

[0158] In a fifth aspect, an embodiment of the present application further provides an electronic device, comprising a display device as provided in the embodiment of the second aspect.

[0159] The electronic device provided in the embodiment of the present application includes the display device provided in the embodiment of the second aspect, and therefore has all the beneficial effects of the display device provided in the embodiment of the second aspect, which will not be listed one by one here.

[0160] In a fifth aspect, an embodiment of the present application further provides an electronic device, comprising a display device as provided in the embodiment of the fourth aspect.

[0161] The electronic device provided in the embodiment of the present application includes the display device provided in the embodiment of the fourth aspect, and therefore has all the beneficial effects of the display device provided in the embodiment of the fourth aspect, which will not be listed one by one here.

[0162] In a fifth aspect, an embodiment of the present application further provides an electronic device, Figure 25 The structural block diagram of the electronic device according to the embodiment of the present application is shown as follows: Figure 25 As shown, the electronic device 2500 includes a processor 2502 and a memory 2504. The memory 2504 stores programs or instructions that can be run on the processor 2502. When the program or instructions are executed by the processor 2502, the various steps of the above-mentioned method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, they will not be repeated here.

[0163] It should be noted that the electronic devices in the embodiments of the present application include the above-mentioned mobile electronic devices and non-mobile electronic devices.

[0164] Figure 26 A schematic diagram of the hardware structure of an electronic device implementing an embodiment of the present application.

[0165] The electronic device 2600 includes, but is not limited to, a radio frequency unit 2601, a network module 2602, an audio output unit 2603, an input unit 2604, a sensor 2605, a display unit 2606, a user input unit 2607, an interface unit 2608, a memory 2609, and a processor 2610. The display unit 2606 includes a display device.

[0166] Those skilled in the art will understand that the electronic device 2600 may also include a power source (such as a battery) to power each component, and the power source may be logically connected to the processor 2610 through a power management system, thereby implementing functions such as charging, discharging, and power consumption management through the power management system. Figure 26 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.

[0167] The processor 2610 is configured to determine display brightness information of the display device;

[0168] The processor 2610 is configured to control the switch device in the light-emitting assembly to operate in a first state when the display brightness information is less than or equal to the brightness threshold, so that one of the first light-emitting layer and the second light-emitting layer is connected to the driving circuit and the other is short-circuited;

[0169] The processor 2610 is configured to control the switch device in the light-emitting component to operate in the second state when the display brightness information is greater than the brightness threshold, so that the first light-emitting layer and the second light-emitting layer are connected to the driving circuit.

[0170] In some embodiments, optionally, it also includes: the processor 2610 is used to control the switching device to operate in a third state between two adjacent frames of images when the display device is playing in interleaved mode, so that the first light-emitting layer and the second light-emitting layer are in an open state.

[0171] The present application switches the working mode of the light-emitting component at different brightnesses. When emitting light at low brightness, the switching device can operate in the first state and only use a single light-emitting layer for light emission. For example, the required brightness is 600 nits. When the two light-emitting layers emit light at the same time, the brightness of the first light-emitting layer and the second light-emitting layer are both about 300 nits. When only one of the first light-emitting layer and the second light-emitting layer emits light, the brightness of the light-emitting layer is 600 nits. Therefore, the brightness of the single light-emitting layer can be increased by about 1 times at low brightness, so that the difference in luminous efficiency of light-emitting components of different colors is smaller, thereby reducing the difference in luminous efficiency of light-emitting components of different colors at low brightness, reducing the color difference of the display device, and, at high brightness, the service life of the first light-emitting layer and the second light-emitting layer can be improved, and the luminous efficiency of the first light-emitting layer and the second light-emitting layer can be improved.

[0172] It should be understood that in an embodiment of the present application, the input unit 2604 may include a graphics processor 26041 and a microphone 26042, and the graphics processor 26041 processes the image file of the static picture or video obtained by the image capture device (such as a camera) in the video capture mode or the image capture mode. The display unit 2606 may include a display panel 26061, and the display panel 26061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 2607 includes a touch panel 26071 and at least one of the other input devices 26072. The touch panel 26071 is also called a touch screen. The touch panel 26071 may include two parts: a touch detection device and a touch controller. Other input devices 26072 may include but are not limited to a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0173] Memory 2609 can be used to store software programs and various files. Memory 2609 may mainly include a first storage area for storing programs or instructions and a second storage area for storing files, wherein 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.). In addition, memory 2609 may include volatile memory or non-volatile memory, or memory 2609 may include both volatile and non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. Volatile memory can 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 2609 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0174] Processor 2610 may include one or more processing units. Optionally, processor 2610 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 2610.

[0175] An embodiment of the present application also provides a storage medium having a program or instruction stored thereon. When the program or instruction is executed by a processor, the various processes of the control method embodiment of the above-mentioned display device are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0176] The storage medium may be a readable storage medium.

[0177] The processor is the processor in the electronic device in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.

[0178] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, which is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-mentioned display device control method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0179] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0180] An embodiment of the present application provides a computer program product, which is stored in a storage medium. The program product is executed by at least one processor to implement the various processes of the control method embodiment of the display device as described above, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0181] 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.

[0182] Through the description of the above implementation methods, 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, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), including a number of instructions for enabling an electronic device (which can be a mobile phone, computer, server or network device, etc.) to execute the methods of each embodiment of the present application.

[0183] 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 light emitting component, characterized in that: include: a first light-emitting layer; a charge generation layer connected in series with the first light-emitting layer; a second light-emitting layer connected in series with the charge-generating layer; a driving circuit electrically connected to the first light-emitting layer; a switching device electrically connected to the charge generation layer, wherein when the switching device is in a first state, one of the first light-emitting layer and the second light-emitting layer is connected to the driving circuit and the other is short-circuited; and when the switching device is in a second state, both the first light-emitting layer and the second light-emitting layer are connected to the driving circuit; The switching device comprises: a first switching element, wherein a first end of the first switching element is electrically connected to the charge generation layer, and a second end of the first switching element is electrically connected to the negative electrode; Wherein, when the switching device is in the first state, the first switching element is in an on state, and when the switching device is in the second state, the first switching element is in an off state; When the switching device is in the third state, the first light-emitting layer and the second light-emitting layer are in an open state, the charge generation layer includes: a first charge generation layer and a second charge generation layer, the first light-emitting layer, the first charge generation layer, the second charge generation layer and the second light-emitting layer are arranged in series, and the switching device further includes: a third switching element, wherein the first charge generation layer and the second charge generation layer are connected in series via the third switching element, a fifth terminal of the third switching element is electrically connected to the first charge generation layer, and a sixth terminal of the third switching element is electrically connected to the second charge generation layer; In which, when the switching device is in the first state, the third switching element is in the on state or the off state; when the switching device is in the second state, the third switching element is in the on state; when the switching device is in the third state, the first switching element is in the off state and the third switching element is in the off state.

2. The light-emitting assembly according to claim 1, wherein: The first light-emitting layer, the charge generation layer and the second light-emitting layer are stacked; or The first light-emitting layer and the second light-emitting layer are staggered.

3. A light-emitting component, characterized in that: include: a first light-emitting layer; a charge generation layer connected in series with the first light-emitting layer; a second light-emitting layer connected in series with the charge-generating layer; a driving circuit electrically connected to the first light-emitting layer; a switching device electrically connected to the charge generation layer, wherein when the switching device is in a first state, one of the first light-emitting layer and the second light-emitting layer is connected to the driving circuit and the other is short-circuited; and when the switching device is in a second state, both the first light-emitting layer and the second light-emitting layer are connected to the driving circuit; The switching device comprises: a second switching element, wherein a third terminal of the second switching element is electrically connected to the charge generation layer, and a fourth terminal of the second switching element is electrically connected to the driving circuit; Wherein, when the switching device is in the first state, the second switching element is in an on state, and when the switching device is in the second state, the second switching element is in an off state.

4. The light emitting assembly according to claim 3, characterized in that: When the switching device is in the third state, the first light-emitting layer and the second light-emitting layer are in an open state, the charge generation layer includes: a first charge generation layer and a second charge generation layer, the first light-emitting layer, the first charge generation layer, the second charge generation layer and the second light-emitting layer are arranged in series, and the switching device further includes: a fourth switching element, wherein the first charge generation layer and the second charge generation layer are connected in series via the fourth switching element, a seventh terminal of the fourth switching element is electrically connected to the first charge generation layer, and an eighth terminal of the fourth switching element is connected to the second charge generation layer; In which, when the switching device is in the first state, the fourth switching element is in the on state; when the switching device is in the second state, the fourth switching element is in the on state; when the switching device is in the third state, the second switching element is in the on state or the off state, and the fourth switching element is in the off state.

5. The light emitting assembly according to claim 3, characterized in that: When the switching device is in the third state, the first light-emitting layer and the second light-emitting layer are in an open state, the charge generation layer includes: a first charge generation layer and a second charge generation layer, the first light-emitting layer, the first charge generation layer, the second charge generation layer and the second light-emitting layer are arranged in series, and the switching device further includes: a fifth switching element, wherein a ninth terminal of the fifth switching element is electrically connected to the first charge generation layer or the second charge generation layer, and a tenth terminal of the fifth switching element is electrically connected to the cathode; In which, when the switching device is in the first state, the fifth switching element is in the off state; when the switching device is in the second state, the fifth switching element is in the off state; when the switching device is in the third state, the second switching element is in the on state, and the fifth switching element is in the on state.

6. The light emitting assembly according to any one of claims 3 to 5, characterized in that: The first light-emitting layer, the charge generation layer and the second light-emitting layer are stacked; or The first light-emitting layer and the second light-emitting layer are staggered.

7. A display device, characterized in that: include: At least one lighting assembly according to any one of claims 1 to 6.

8. The display device according to claim 7, wherein: Also includes: a pixel defining layer, wherein the first light-emitting layer, the charge generation layer, and the second light-emitting layer of the light-emitting component are disposed within the pixel defining layer; a planarization layer, disposed on one side of the pixel definition layer; an interlayer dielectric layer, disposed on a side of the planar layer away from the pixel defining layer; a gate insulating layer, provided on a side of the interlayer dielectric layer away from the planar layer, wherein the switching device of the light-emitting assembly is embedded in the gate insulating layer; A first passivation layer is provided on a side of the gate insulating layer away from the interlayer dielectric layer, and the switching device is provided opposite to the first passivation layer.

9. A method for controlling a display device, characterized in that: The display device includes the light-emitting assembly according to any one of claims 1 to 6, and the method includes: determining display brightness information of the display device; When the display brightness information is less than or equal to a brightness threshold, controlling the switch device in the light-emitting component to operate in a first state so that one of the first light-emitting layer and the second light-emitting layer is connected to a driving circuit and the other is short-circuited; When the display brightness information is greater than a brightness threshold, the switch device in the light-emitting component is controlled to operate in a second state, so that the first light-emitting layer and the second light-emitting layer are connected to the driving circuit.

10. The control method of the display device according to claim 9, characterized in that: The method further comprises: When the display device plays in an interleaving mode, between two adjacent frames of images, the switch device is controlled to operate in a third state, so that the first light-emitting layer and the second light-emitting layer are in an open state.

11. A control device for a display device, characterized in that: The display device comprises a light-emitting assembly according to any one of claims 1 to 6, and the device comprises: a determination module, configured to determine display brightness information of the display device; a first control module, configured to control the switch device in the light-emitting assembly to operate in a first state when the display brightness information is less than or equal to a brightness threshold, so that one of the first light-emitting layer and the second light-emitting layer is connected to a driving circuit and the other is short-circuited; The second control module is used to control the switch device in the light-emitting component to operate in a second state when the display brightness information is greater than a brightness threshold, so that the first light-emitting layer and the second light-emitting layer are connected to the driving circuit.

12. An electronic device, characterized in that: include: The display device according to claim 7 or 8; or A processor and a memory, the memory storing a program or instruction that can be run on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method for controlling the display device according to claim 9 or 10; or The control device for a display device according to claim 11.

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