CN108401466B

CN108401466B - Display panel, display device and control method of display panel

Info

Publication number: CN108401466B
Application number: CN201680067412.4A
Authority: CN
Inventors: 罗红磊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-12-06
Filing date: 2016-12-06
Publication date: 2020-12-04
Anticipated expiration: 2036-12-06
Also published as: WO2018102996A1; CN108401466A

Abstract

A display panel, a display device and a control method of the display panel relate to the technical field of display and can improve the display effect of the display panel. The display panel includes: the display panel comprises a first conductive layer (11), an organic electroluminescent layer (12) and a second conductive layer (13), wherein the first conductive layer (11) comprises at least two first electrodes (111), the second conductive layer (13) comprises a second electrode, the at least two first electrodes (111) respectively correspond to at least two display areas of the display panel, each of the at least two first electrodes (111) is respectively connected with a power supply (14), and the power supplies (14) connected with each first electrode (111) are different power supplies.

Description

Display panel, display device and control method of display panel

Technical Field

The embodiment of the invention relates to the technical field of display, in particular to a display panel, a display device and a control method of the display panel.

Background

With the continuous development of display technology, the use of Active Matrix Organic Light Emitting Diode (AMOLED) display panels is becoming more and more common.

At present, an AMOLED display panel is generally formed by a plurality of pixels, and each pixel includes three sub-pixels, each sub-pixel includes a pixel circuit, and all the pixel circuits share an active matrix organic light emitting diode anode power supply (hereinafter abbreviated as ELVDD) and an active matrix organic light emitting diode cathode power supply (hereinafter abbreviated as ELVSS). When the AMOLED display panel displays, the power consumption P of each sub-pixel is approximately equal to Δ U × I, where Δ U is the difference between the voltage of ELVDD and the voltage of ELVSS, and I is the current passing through an organic light emitting diode (hereinafter abbreviated as OLED) in the pixel circuit. Generally, in order to reduce the power consumption of the AMOLED display panel, a method of adjusting the voltage of ELVDD or the voltage of ELVSS may be adopted to reduce the difference between the voltage of ELVDD and the voltage of ELVSS according to the display screen content, thereby reducing the power consumption of the AMOLED display panel.

However, since all the sub-pixel circuits included in the AMOLED display panel share the ELVDD and the ELVSS, the power consumption of the AMOLED display panel may be reduced by reducing the difference between the ELVDD voltage and the ELVSS voltage.

Disclosure of Invention

The application provides a display panel, a display device and a control method of the display panel, which can improve the display effect of the display panel.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

in a first aspect, a display panel is provided, where the display panel includes a first conductive layer, an organic electroluminescent layer, and a second conductive layer, where the first conductive layer includes at least two first electrodes, the second conductive layer includes a second electrode, the at least two first electrodes respectively correspond to at least two display regions of the display panel, each of the at least two first electrodes is respectively connected to a power supply, and the power supplies connected to each of the at least two first electrodes are different power supplies.

Since the first conductive layer in the display panel provided by the present application may include at least two first electrodes, and each of the at least two first electrodes is connected to one power supply, voltages may be provided to the at least two first electrodes through the at least two power supplies, so as to independently control the voltages of the at least two first electrodes in the first conductive layer. That is, the display panel in the embodiment of the present invention may independently control a difference between voltages of each first electrode in the first conductive layer and the second electrode in the second conductive layer (i.e., voltages of at least two display regions of the display panel respectively corresponding to the at least two first electrodes), so that luminance of each display region in the display panel may be independently controlled, and thus, a display effect of the display panel may be improved.

In a first possible implementation manner of the first aspect, the display panel provided by the present application further includes a substrate, and a signal line, where each first electrode is connected to a power supply, is disposed on the substrate; the signal line (i.e., the signal line in which each first electrode is connected to the power supply) is connected to the first electrode through the via hole.

In the present application, the signal lines disposed on the substrate may be connected to the power supply through the flexible circuit board, and particularly, since a plurality of signal lines may be encapsulated in one flexible circuit board in a normal situation, all the signal lines disposed on the substrate may be connected to the corresponding power supply through one flexible circuit board (i.e., the power supply to which the first electrode connected to each signal line needs to be connected). Therefore, the signal lines can be prevented from being directly connected to the corresponding power supplies respectively, and the frame of the display panel can be reduced.

Optionally, in the display panel provided in the embodiment of the present invention, the signal lines required to be connected to each first electrode are disposed on the substrate, and each first electrode is connected to the signal lines through the via hole (each first electrode is directly connected to one signal line), so that the signal lines are not disposed in the non-display area on the side of the display panel, and thus, the frame of the display panel can be reduced.

In a second possible implementation manner of the first aspect, the display panel provided by the present application further includes a pressure-sensitive touch layer, and a signal line, where each first electrode is connected to a power supply, is disposed on the pressure-sensitive touch layer; the signal line (a signal line in which each first electrode is connected to a power supply) is connected to the first electrode through a via hole.

Since the number of lines arranged on the pressure-sensitive touch layer of the display panel is usually small, the display panel provided by the application can arrange the signal lines connected with each first electrode on the pressure-sensitive touch layer. Therefore, the manufacturing process of the display panel provided by the application can be simplified.

It should be noted that, in order to simplify the manufacturing process of the display panel provided by the present application, in the display panel provided by the embodiment of the present invention, the signal line connected to each first electrode may be disposed on the pressure-sensitive touch layer, and the signal line connected to each first electrode may also be disposed on other layers with fewer circuits in the layout of the display panel, which is not limited in the present application.

In the display panel provided by the application, the signal line arranged on the pressure sensing touch layer can be connected to a power supply through the flexible circuit board. Specifically, all signal lines disposed on the pressure-sensitive touch layer may be connected to a corresponding power source (i.e., a power source to which the first electrode connected to each signal line needs to be connected) through one flexible circuit board. Therefore, the signal lines can be prevented from being directly connected to the corresponding power supplies respectively, and the frame of the display panel can be reduced.

According to the display panel, the signal lines which need to be connected with the first electrodes are arranged on the pressure sensing touch layer, and the first electrodes are connected with the signal lines through the through holes (each first electrode is connected with one signal line through one through hole), so that the signal lines can be prevented from being arranged in a non-display area on the side face of the display panel, and the frame of the display panel can be reduced.

In a third possible implementation manner of the first aspect, in the display panel provided by the present application, the at least two first electrodes may be cathode electrodes, and the second electrode may be an anode electrode; alternatively, the at least two first electrodes may be anode conductive layers, and the second electrode may be a cathode conductive layer.

In a second aspect, a display device is provided, which includes the display panel of the first aspect or any one of its possible implementation manners.

For a description of the technical effect of the second aspect, reference may be specifically made to the above-mentioned description of the technical effect of the first aspect or any one of its possible implementation manners, and details are not described here again.

In a third aspect, a method for controlling a display panel is provided, the method comprising: before displaying the image data, determining at least two display areas (at least two display areas respectively correspond to at least two first electrodes in the display panel) of the image data to be displayed; and acquiring a maximum gray-scale value of the image data corresponding to the first display region (i.e., one of the at least two display regions), then determining an electrode voltage and a mapping curve according to the maximum gray-scale value, and setting a voltage of the first electrode corresponding to the first display region as the electrode voltage, and displaying the image data in the first display region according to the first mapping curve.

In this application, since the first display region can be understood as any one of the at least two display regions, the display panel may control the first display region to display the image data by using the control method of the display panel described in the first aspect, or may control each of the at least two display regions on the display panel to display the image data by using the same method as the control method of the display panel described in the first aspect.

According to the control method of the display panel, before the image data is displayed, the display panel can determine at least two display areas of the image data to be displayed, can acquire the electrode voltage and the mapping curve corresponding to each display area, then sets the voltage of the first electrode corresponding to each display area to the electrode voltage corresponding to each display area, and displays the image data in each display area according to the mapping curve corresponding to each display area. In this way, the brightness of each display area in the display panel can be independently controlled, so that the display effect of the display panel can be improved.

In a first possible implementation manner of the third aspect, in the control method of the display panel provided by the present application, the method for determining the electrode voltage and the mapping curve (which may also be referred to as a second mapping curve) corresponding to the first display area according to the maximum gray-scale value may specifically be determining the electrode voltage according to the maximum gray-scale value and a formula; and determining a second mapping curve according to the maximum gray-scale value and a preset mapping curve group comprising the second mapping curve. The formula may be V₁＝V₀-(255-M)*V₀/255 wherein V₁Denotes the electrode voltage, V₀Representing a preset voltage value and M representing a maximum gray scale value.

In a second possible implementation manner of the third aspect, in the control method of the display panel provided by the present application, the determining the second mapping curve according to the maximum gray-scale value and a preset mapping curve group including the mapping curve (may also be referred to as a second mapping curve) may specifically be determining a first luminance value corresponding to the maximum gray-scale value according to the maximum gray-scale value, and selecting, according to the first luminance value, the mapping curve with the maximum luminance value as the first luminance value from the mapping curve group including the first mapping curve as the second mapping curve. Alternatively, when there is no mapping curve having the maximum luminance value as the first luminance value in the mapping curve group, the mapping curve having the maximum luminance value closest to the maximum luminance value may be selected as the second mapping curve.

In a fourth aspect, a method for controlling a display panel is provided, the method comprising: firstly, when image data are displayed, the display panel determines at least two display areas (the at least two display areas respectively correspond to at least two first electrodes in the display panel) where the image data are displayed on the display panel, then, when touch pressure acting on the first display area is detected, a touch pressure value of the touch pressure is obtained, the first display area is one of the at least two display areas, according to the touch pressure value, a first electrode voltage is determined, and a voltage of a first electrode corresponding to the first display area is set as a first electrode voltage; and acquiring a first gray-scale value (namely the maximum gray-scale value of the image data displayed in the first display area), determining a first mapping curve according to the first gray-scale value, and displaying the image data in the first display area according to the first mapping curve.

According to the control method of the display panel, when the display panel displays image data, at least two regions where the image data are displayed on the display panel can be determined, when the display panel detects touch pressure acting on a first display region, second electrode voltage and a first mapping curve corresponding to the first display region can be obtained, then voltage of a first electrode corresponding to the first display region is set to be first electrode voltage, and the image data are displayed in the first display region according to the first mapping curve, so that brightness of a certain display region in the display panel can be flexibly and independently controlled, and display effect of the display panel is further improved.

In a first possible implementation manner of the fourth aspect, the present application provides a control method for a display panelThe method for determining the first electrode voltage corresponding to the first display region according to the touch pressure value may be determining the first electrode voltage according to the touch pressure value and a formula. The specific formula may be: v₁＝V₀-V₀F/9.8, wherein V₁Denotes the electrode voltage, V₀And F represents a preset voltage value and a touch pressure value.

In a second possible implementation manner of the fourth aspect, in the control method of the display panel provided by the present application, the method for determining the first mapping curve according to the first gray-scale value may be that the first mapping curve is determined according to the first gray-scale value and a preset mapping curve group including the first mapping curve.

In a third possible implementation manner of the fourth aspect, in the control method of the display panel provided by the present application, the determining the first mapping curve according to the first gray-scale value and a preset mapping curve group including the first mapping curve may be determining a first luminance value corresponding to the first gray-scale value according to the first gray-scale value, and selecting, as the first mapping curve, a mapping curve with a maximum luminance value as the first luminance value from the preset mapping curve group including the first mapping curve according to the first luminance value. Alternatively, when there is no mapping curve having the maximum luminance value as the first luminance value in the mapping curve group, the mapping curve having the maximum luminance value closest to the maximum luminance value may be selected as the first mapping curve.

In a fourth possible implementation manner of the fourth aspect, the method for controlling a display panel further includes, before displaying the image data, determining at least two display areas where the image data is to be displayed on the display panel (where the at least two display areas correspond to at least two first electrodes in the display panel, respectively), and obtaining a second gray-scale value (that is, a maximum gray-scale value of the image data corresponding to the first display area, where the first display area is one of the at least two display areas), then determining, according to the second gray-scale value, a second electrode voltage and a second mapping curve, and setting a voltage of the first electrode in the first display area as the second electrode voltage, and displaying the image data in the first display area according to the second mapping curve.

In the method for controlling a display panel provided by the present application, the display panel may independently control the display panel to display image data in each display area through the method for controlling a display panel shown in the fourth possible implementation manner of the fourth aspect, and after the display panel displays image data in each display area through the method for controlling a display panel shown in the fourth possible implementation manner of the fourth aspect, the display panel may further individually control the display panel to display image data in a display area (for example, the first display area) where the touch pressure is detected according to the method for controlling a display panel shown in the fourth aspect. The display panel control method provided by the application can independently control the display panel to display the image data in each display area, so that the brightness of each display area in the display panel is independently controlled, and the display effect of the display panel can be improved. In addition, the control method of the display panel provided by the application can also independently control the display panel to display image data in a certain display area (specifically, the display area where the touch pressure is detected), so that the brightness of the certain area in the display panel can be flexibly and independently controlled, and the display effect of the display panel can be further improved.

In a fifth aspect, there is provided a display device including: the device comprises a determining module, an obtaining module, a control module and a display module. The determining module is used for determining at least two display areas of the image data to be displayed before the image data is displayed, wherein the at least two display areas respectively correspond to at least two first electrodes in the display device; the acquisition module is used for acquiring the maximum gray-scale value of the image data corresponding to the first display area (one of at least two display areas); the determining module is also used for determining the electrode voltage and the mapping curve according to the maximum gray-scale value acquired by the acquiring module; the control module is used for setting the voltage of the first electrode corresponding to the first display area as the electrode voltage determined by the determination module; the display module is used for displaying the image data in the first display area according to the mapping curve determined by the determination module.

For a description of the technical effect of the fifth aspect, reference may be specifically made to the above-mentioned description of the technical effect of the third aspect or any one of possible implementation manners thereof, and details are not described here again.

In a sixth aspect, there is provided a display device including: the device comprises a determining module, an obtaining module, a control module and a display module. The determining module is used for determining at least two display areas displayed by the image data on the display panel when the image data are displayed, wherein the at least two display areas respectively correspond to at least two first electrodes in the display device; the acquisition module is used for acquiring a touch pressure value of touch pressure when the touch pressure acting on a first display area (one display area of at least two display areas) is detected; the determining module is further used for determining the first electrode voltage according to the touch pressure value acquired by the acquiring module; the control module is used for setting the voltage of the first electrode corresponding to the first display area as the first electrode voltage determined by the determination module; the acquisition module is further used for acquiring a first gray scale value, wherein the first gray scale value is the maximum gray scale value of the image data displayed in the first display area; the determining module is further used for determining a first mapping curve according to the first gray-scale value acquired by the acquiring module; the display module is further used for displaying the image data in the first display area according to the first mapping curve determined by the determination module.

In a first possible implementation manner of the sixth aspect, the determining module is further configured to determine, before displaying the image data, at least two display areas where the image data is to be displayed on the display device, where the at least two display areas respectively correspond to at least two first electrodes in the display device; the acquiring module is further configured to acquire a second gray scale value, where the second gray scale value is a maximum gray scale value of the image data corresponding to the first display area, and the first display area is one of the at least two display areas; the determining module is further configured to determine a second electrode voltage and a second mapping curve according to the second gray scale value obtained by the obtaining module; the control module is also used for setting the voltage of the first electrode corresponding to the first display area as the voltage of the second electrode; the display module is further used for displaying the image data in the first display area according to the second mapping curve determined by the determination module.

For a description of the technical effect of the sixth aspect or any one of its possible implementations, reference may be specifically made to the above-mentioned description of the technical effect of the fourth aspect or any one of its possible implementations, and details are not described here again.

In a seventh aspect, there is provided a display panel (or display device) comprising a processor and a memory; the memory is configured to store computer-executable instructions, and when the display panel runs, the processor executes the computer-executable instructions stored in the memory, so that the display panel executes the method for controlling the display panel according to the third aspect or any one of the possible implementation manners of the third aspect and the fourth aspect or any one of the possible implementation manners of the fourth aspect.

In an eighth aspect, a computer-readable storage medium is provided, in which one or more programs are stored, where the one or more programs include computer-executable instructions, and when a processor of a display panel (or a display device) executes the computer-executable instructions, the display panel executes the control method of the display panel according to the third aspect or any one of its possible implementation manners and the fourth aspect or any one of its possible implementation manners.

For the description of the technical effects of the seventh aspect and the eighth aspect, reference may be specifically made to the above-mentioned description of the technical effects of the third aspect or any one of its possible implementation manners and the above-mentioned technical effects of the fourth aspect or any one of its possible implementation manners, and details are not described here again.

In the embodiment of the invention, the at least two first electrodes are arranged on the conductive layer and respectively correspond to the at least two display areas of the display panel, and the brightness of the at least two display areas in the display panel is independently controlled by independently controlling the power supplies of the at least two electrodes, so that the display effect of the display panel can be improved.

Drawings

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

fig. 2 is a schematic view of a second structure of a display panel according to an embodiment of the invention;

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

fig. 4 is a schematic diagram illustrating a fourth structure of a display panel according to an embodiment of the invention;

fig. 5 is a schematic structural diagram of a display panel according to a fifth embodiment of the present invention;

fig. 6 is a schematic diagram illustrating a sixth structure of a display panel according to an embodiment of the present invention;

fig. 7 is a schematic diagram illustrating a seventh structure of a display panel according to an embodiment of the invention;

fig. 8 is an eighth structural diagram of a display panel according to an embodiment of the disclosure;

FIG. 9 is a diagram illustrating a first control method of a display panel according to an embodiment of the present invention;

FIG. 10 is a diagram illustrating a mapping curve set of a mapping relationship between gray-scale values and luminance values according to an embodiment of the present invention;

FIG. 11 is a diagram illustrating a second control method for a display panel according to an embodiment of the present invention;

FIG. 12 is a diagram illustrating a third method for controlling a display panel according to an embodiment of the present invention;

fig. 13 is a schematic view of a first structure of a display device according to an embodiment of the invention;

fig. 14 is a schematic structural diagram of a display device according to an embodiment of the invention.

Detailed Description

The terms "first" and "second", etc. in the embodiments of the present invention are used to distinguish different objects, not to describe a specific order of the objects. For example, first and second conductive layers, etc. are used to distinguish different conductive layers, rather than to describe a particular order of conductive layers.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

Technical solutions in the embodiments of the present invention will be described in detail below with reference to the drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.

In the prior art, since all the sub-pixel circuits included in the display panel share the ELVDD and the ELVSS, when the power consumption of the display panel is reduced by reducing the difference between the voltage of the ELVDD and the voltage of the ELVSS, the overall brightness of the display panel may be reduced due to the reduction of the difference between the voltage of the ELVDD and the voltage of the ELVSS, which may affect the display effect of the display panel.

In order to solve the above problem, embodiments of the present invention provide a display panel, a display device (the display device includes a display panel), and a control method of the display panel, which can independently control the brightness of each display area in the display panel, so as to improve the display effect of the display panel. Specifically, the display panel, the display device and the control method of the display panel according to the embodiments of the present invention will be described in detail in the following embodiments, respectively.

The display device provided by the embodiment of the invention can be a television, a mobile phone, a tablet computer and other products with a display function. The display panel provided by the embodiment of the invention can be applied to products with display functions, such as televisions, mobile phones, tablet computers and the like. Optionally, the display panel in the embodiment of the present invention may be an AMOLED display panel.

The following first illustrates the main elements involved in the embodiments of the present invention and the various drawings:

11: a first conductive layer; 12: an organic electroluminescent layer; 13: a second conductive layer; 14: a power source; 15: a signal line; 16: a substrate; 17: a via hole; 18: a first insulating layer between the second conductive layer 13 and the substrate 16; 19: a pressure-sensitive touch layer; 20: a second insulating layer between two adjacent first electrodes 111; 111: a first electrode.

An embodiment of the present invention provides a display panel, as shown in fig. 1, the display panel includes: a first conductive layer 11, an organic electroluminescent layer 12 and a second conductive layer 13. The first conductive layer 11 includes at least two first electrodes 111, the second conductive layer includes a second electrode, the at least two first electrodes 111 respectively correspond to at least two display regions of the display panel, and each of the at least two first electrodes 111 is respectively connected to one power source 14, wherein the power sources 14 connected to each first electrode 111 may be different power sources, or may be the same power source, or at least the power sources 14 connected to the two first electrodes 111 are different power sources.

For example, fig. 1 exemplifies that the organic electroluminescent layer 12 is disposed between the first conductive layer 11 and the second conductive layer 13, and it is understood that the positions of the first conductive layer 11 and the second conductive layer 13 in fig. 1 may be interchanged.

Alternatively, each of the at least two first electrodes 111 (i.e., each first electrode) may be connected to a power source 14 through a signal line 15, respectively, as shown in fig. 1.

In an embodiment of the present invention, the signal line may be conductive, and specifically, the signal line in an embodiment of the present invention may be made of a metal material, for example, the signal line may be a copper line made of copper.

Optionally, the at least two first electrodes respectively correspond to at least two display regions of the display panel, which may be understood as that the number of the first electrodes is the same as the number of the display regions of the display panel, and each of the at least two first electrodes respectively corresponds to each of the at least two display regions of the display panel one to one.

It should be noted that, in the embodiment of the present invention, each first electrode (at least two first electrodes) included in the first conductive layer is not electrically connected, so that insulation processing may be performed between the first electrodes included in the first conductive layer. For example, an insulating layer may be provided between adjacent two first electrodes.

Optionally, in the embodiment of the present invention, each of the first conductive layer and the second conductive layer may be a light-transmissive conductive thin film formed by depositing Indium Tin Oxide (ITO), graphene, and other materials.

Alternatively, the first electrode and the second electrode in the embodiment of the present invention may be implemented by performing a patterning process (for example, exposure, development, etching, stripping, and the like) on the light-transmissive conductive film.

Alternatively, since the first conductive layer, the second conductive layer and the organic electroluminescent layer are generally formed by deposition on a substrate (e.g. a glass substrate), for example, in conjunction with fig. 1, as shown in fig. 2, the display panel may further include a substrate 16, and the second conductive layer 13, the organic electroluminescent layer 12 and the first conductive layer 11 are sequentially formed by deposition on one side of the substrate 16.

In the display panel provided by the embodiment of the invention, the first conductive layer may include at least two first electrodes, and each of the at least two first electrodes is connected to one power supply, so that voltages may be provided to the at least two first electrodes by the at least two power supplies, so as to independently control the voltages of the at least two first electrodes in the first conductive layer. That is, the display panel in the embodiment of the present invention can independently control the difference between the voltages of each first electrode in the first conductive layer and the second electrode in the second conductive layer (the second conductive layer includes one second electrode) (i.e., independently control the voltages of at least two display regions of the display panel corresponding to at least two first electrodes, respectively), so that the brightness of each display region in the display panel can be independently controlled, and the display effect of the display panel can be improved.

Optionally, referring to fig. 1, as shown in fig. 3, the display panel further includes a substrate 16, and the signal line 15, which connects each first electrode 111 to the power supply 14, is disposed on the substrate 16; the signal line 15 is connected to the first electrode 111 through the via 17.

Illustratively, as shown in fig. 3, the display panel further includes a first insulating layer 18 and a second insulating layer 20, the first insulating layer 18 being disposed between the second conductive layer 13 and the substrate 14; the second insulating layer 20 is disposed between any two adjacent first electrodes 111. The signal line 15 is connected to the first conductive layer 111 through a via 17, and the via 17 penetrates the organic electroluminescent layer 12, the second conductive layer 13, and the first insulating layer 18.

The via hole in the embodiment of the invention can be realized by arranging one via hole and depositing a layer of metal on the inner wall of the via hole.

In the embodiment of the invention, since the via hole and the second conductive layer may be conducted by mistake, an insulation treatment may be required between the via hole and the second conductive layer, for example, an insulation layer is disposed between the via hole and the second conductive layer, so as to avoid the via hole and the second conductive layer from being conducted by mistake.

In the embodiment of the present invention, the signal line is connected to the first electrode through the via hole, which can be understood that each first electrode in the first conductive layer is connected to one signal line through one via hole.

It should be noted that, in the display panel provided in the embodiment of the present invention, the first conductive layer may include at least two first electrodes, and each first electrode in the first conductive layer is connected to one signal line through one via, respectively, in a practical situation, the first conductive layer 11 in fig. 3 may include at least two first electrodes 111, at least two signal lines 15 may be disposed on the substrate 16, and at least two vias 17 may be disposed in fig. 3. However, since each first electrode 111 is connected to one signal line 15 through one via 17 in the same manner, fig. 3 only exemplarily shows a structure in which 3 first electrodes are connected to one signal line 15 through one via 17, and for the other structures in which the first electrodes 111 are connected to one signal line 15 through one via 17, reference may be specifically made to the structure shown in fig. 3 in which the first electrodes 111 are connected to one signal line 15 through one via 17, and details thereof are not described here.

Alternatively, referring to fig. 2, as shown in fig. 4, the signal line 15 connecting each first electrode 111 to the power supply 14 is disposed on the substrate 16, and the signal line 15 may be directly connected to the first electrode 111 (it is understood that each first electrode 111 in the first conductive layer 11 may be directly connected to one signal line 15, respectively). In the display panel shown in fig. 4, a second insulating layer 20 is further disposed between any two adjacent first electrodes 111.

It should be noted that fig. 4 only shows an exemplary structure in which 3 first electrodes are directly connected to one signal line 15, and for the other structures in which the first electrodes 111 are connected to one signal line 15 through one via 17, reference may be made to the structure in which the first electrodes 111 are connected to one signal line 15 through one via 17 shown in fig. 4, and details thereof are not described here.

In the embodiment of the present invention, the signal lines disposed on the substrate may be connected to the power supply through the flexible circuit board, and specifically, since a plurality of signal lines may be packaged in one flexible circuit board in a normal situation, all the signal lines disposed on the substrate may be connected to the corresponding power supply through one flexible circuit board (i.e., the power supply to which the first electrode connected to each signal line needs to be connected). Therefore, the signal lines can be prevented from being directly connected to the corresponding power supplies respectively, and the frame of the display panel can be reduced.

Optionally, in the display panel provided in the embodiment of the present invention, the signal lines required to be connected to each first electrode are disposed on the substrate, and each first electrode is directly connected to the signal lines (each first electrode is directly connected to one signal line) through the via hole, so that the signal lines are not disposed in the non-display area on the side of the display panel, and thus the frame of the display panel can be reduced.

Optionally, the display panel provided in the embodiment of the present invention further includes a pressure-sensitive touch layer, wherein a signal line connecting each first electrode to the power supply is disposed on the pressure-sensitive touch layer, and the signal line is connected to the first electrode through a via hole.

Illustratively, referring to fig. 2, as shown in fig. 5, the pressure-sensitive touch layer 19 is disposed on the other side of the substrate 16, wherein the signal line 15, to which each first electrode 111 is connected to a power source, is disposed on the pressure-sensitive touch layer 19, the signal line 15 is connected to the first electrode through a via 17 (it can be understood that each first electrode 111 in the first conductive layer 11 is connected to one signal line 15 through one via 17, respectively), and the via 17 penetrates through the substrate 16. In the display panel shown in fig. 5, a second insulating layer 20 is further disposed between any two adjacent first electrodes 111.

It should be noted that fig. 5 only shows an exemplary structure in which 3 first electrodes 111 are connected to one signal line 15 through one via 17, and for the other structures in which the first electrodes 111 are connected to one signal line 15 through one via 17, reference may be made to the structure in which the first electrodes 111 are connected to one signal line 15 through one via 17 shown in fig. 5, and details thereof are not described here.

Illustratively, referring to fig. 2, as shown in fig. 6, the pressure-sensitive touch layer 19 is disposed on the other side of the substrate 16, wherein the signal line 15 connected to the power source of each first electrode 111 is disposed on the pressure-sensitive touch layer 19, the signal line 15 is connected to one signal line 15 through a via 17, and the via 17 penetrates through the organic electroluminescent layer 12, the second conductive layer 13 and the substrate 16. In the display panel shown in fig. 6, a second insulating layer 20 is further provided between any two adjacent first electrodes 111.

It should be noted that fig. 6 only shows an exemplary structure in which 3 first electrodes 111 are connected to one signal line 15 through one via 17, and for the other structures in which the first electrodes 111 are connected to one signal line 15 through one via 17, reference may be made to the structure in which the first electrodes 111 are connected to one signal line 15 through one via 17 shown in fig. 6, and details thereof are not described here.

Illustratively, referring to fig. 2, as shown in fig. 7, the pressure-sensitive touch layer 19 is disposed on one side of the second conductive layer 13 (i.e., the side opposite to the organic electroluminescent layer 12 in fig. 7), and the signal line 15, in which each first electrode 111 is connected to a power source, is disposed on the pressure-sensitive touch layer 19. Each first electrode 111 is connected to one signal line 15 through a via 17, and the via 17 penetrates through the pressure-sensitive touch layer 19, the second conductive layer 13, and the organic electroluminescent layer 12. In the display panel shown in fig. 6, a second insulating layer 20 is further provided between any two adjacent first electrodes 111.

It should be noted that fig. 7 only shows an exemplary structure in which 3 first electrodes 111 are connected to one signal line 15 through one via 17, and for the other structures in which the first electrodes 111 are connected to one signal line 15 through one via 17, reference may be made to the structure in which the first electrodes 111 are connected to one signal line 15 through one via 17 shown in fig. 7, and details thereof are not described here.

Illustratively, referring to fig. 2, as shown in fig. 8, the pressure-sensitive touch layer 19 is disposed on one side of the first conductive layer 11 (i.e., the side opposite to the organic electroluminescent layer 12 in fig. 8), and the signal line 15, to which each first electrode 111 is connected, is disposed on the pressure-sensitive touch layer 19. Each first electrode 111 is connected to one signal line 15 through a via hole 17, and the via hole 17 penetrates through the pressure-sensitive touch layer 19. In the display panel shown in fig. 8, a second insulating layer 20 is further provided between any two adjacent first electrodes 111.

It should be noted that fig. 8 only shows an exemplary structure in which 3 first electrodes 111 are connected to one signal line 15 through one via 17, and for the other structures in which the first electrodes 111 are connected to one signal line 15 through one via 17, reference may be made to the structure in which the first electrodes 111 are connected to one signal line 15 through one via 17 shown in fig. 8, and details thereof are not described here.

Since generally, there are fewer lines laid out on the pressure-sensitive touch layer of the display panel, the signal lines connected to each of the first electrodes may be disposed on the pressure-sensitive touch layer of the display panel provided in the embodiment of the present invention. Therefore, the manufacturing process of the display panel provided by the embodiment of the invention can be simplified.

It should be noted that, in order to simplify the manufacturing process of the display panel provided in the embodiment of the present invention, the signal lines connected to each first electrode may be disposed on the pressure-sensitive touch layer, and the signal lines connected to each first electrode may also be disposed on other layers with fewer circuits in the display panel, which is not limited in the embodiment of the present invention.

Optionally, in the display panel provided in the embodiment of the present invention, the signal line disposed on the pressure-sensitive touch layer may be connected to the power supply through the flexible circuit board. Specifically, all signal lines disposed on the pressure-sensitive touch layer may be connected to a corresponding power source (i.e., a power source to which the first electrode connected to each signal line needs to be connected) through one flexible circuit board. Therefore, the signal lines can be prevented from being directly connected to the corresponding power supplies respectively, and the frame of the display panel can be reduced.

Optionally, in the display panel provided in the embodiment of the present invention, the signal lines that need to be connected to each first electrode are disposed on the pressure-sensitive touch layer, and each first electrode is connected to the signal lines through the via hole (each first electrode is connected to one signal line through one via hole), so that the signal lines are not disposed in the non-display area on the side of the display panel, and thus the frame of the display panel can be reduced.

Compared with the display panels shown in fig. 5 and 6, the display panels shown in fig. 7 and 8 can avoid the formation of via holes on the substrate (normally, the substrate is provided with pixel circuits), thereby avoiding the influence on the pixel circuits on the substrate.

Optionally, in an embodiment of the present invention, at least two first electrodes in the first conductive layers in the display panel shown in fig. 1 to 8 may be cathode electrodes, and a second electrode in the second conductive layer may be an anode electrode, that is, the first conductive layer may be a cathode conductive layer, and the second conductive layer may be an anode conductive layer.

Optionally, in an embodiment of the present invention, at least two first electrodes in the first conductive layers in the display panel shown in fig. 1 to 8 may be anode electrodes, and a second electrode in the second conductive layer may be a cathode electrode, that is, the first conductive layer may be an anode conductive layer, and the second conductive layer may be a cathode conductive layer.

It should be noted that, as a specific implementation manner of the substrate 16 in any one of the display panels shown in fig. 1 to fig. 8, reference may be made to a specific implementation manner of a substrate in a conventional display panel, and details of the embodiment of the present invention are not repeated.

The display panel provided by the embodiment of the invention comprises a first conductive layer, an organic electroluminescent layer and a second conductive layer, wherein the first conductive layer comprises at least two first electrodes, the second conductive layer comprises a second electrode, the at least two first electrodes respectively correspond to at least two display areas of the display panel, each of the at least two first electrodes is respectively connected with a power supply, and the power supplies connected with each first electrode are different power supplies. Since the first conductive layer may include at least two first electrodes, and each of the at least two first electrodes is connected to a power supply, the at least two electrodes may be provided with voltages by the at least two power supplies, so as to independently control the voltages of the at least two first electrodes in the first conductive layer. That is, the display panel in the embodiment of the present invention can independently control the difference between the voltages of each first electrode in the first conductive layer and the second electrode in the second conductive layer (i.e., independently control the voltages of at least two display regions of the display panel corresponding to the at least two first electrodes, respectively), so that the brightness of each display region in the display panel can be independently controlled, and the display effect of the display panel can be improved.

An embodiment of the present invention provides a display device, which may include any one of the display panels shown in fig. 1 to 8 in the above embodiments. Specifically, for the description of the structure, the function, the operation principle, and the like of the display panel in the display device, reference may be made to the above description of the structure, the function, the operation principle, and the like of any one of the display panels shown in fig. 1 to fig. 8, and details are not repeated here.

The display device provided in the embodiment of the present invention may be a display panel (for example, any one of the display panels shown in fig. 1 to 8 in the above embodiments) or a display device, and the display device may be a product with a display function, such as a television, a mobile phone, and a tablet computer.

The display device provided by the embodiment of the invention comprises a display panel, and the first electrodes in the display panel comprise at least two first electrodes, and each of the at least two first electrodes is respectively connected with a power supply, so that the at least two electrodes can be respectively provided with voltages by the at least two power supplies, and the voltages of the at least two first electrodes in the first conductive layer can be independently controlled. That is, the display panel in the embodiment of the present invention can independently control the difference between the voltages of each first electrode in the first conductive layer and the second electrode in the second conductive layer (the second conductive layer includes one second electrode) (i.e., independently control the voltages of at least two display regions of the display panel corresponding to at least two first electrodes, respectively), so that the brightness of each display region (each region corresponds to one first electrode) in the display panel can be independently controlled, and thus the display effect of the display panel can be improved. Namely, the display effect of the display device is improved.

The embodiment of the invention provides a control method of a display panel, and an execution main body of the control method of the display panel can be, for example, the display panel, a display device, or a display driving chip integrated in the display panel or the display device. Specifically, the following description will exemplarily describe the execution subject of the control method of the display panel provided in the embodiment of the present invention as the display panel.

As shown in fig. 9, an embodiment of the present invention provides a method for controlling a display panel, which can be applied to any one of the display panels provided in fig. 1 to 8, before the display panel displays image data, the method including:

s101, the display panel determines at least two display areas of image data to be displayed.

For example, when the display panel is any one of the display panels provided in fig. 1 to 8 of the present invention, the at least two display areas on the display panel where the image data is to be displayed correspond to the at least two first electrodes on the first conductive layer in the display panel, that is, the number of the display areas on the display panel where the image data is to be displayed is the same as the number of the first electrodes on the first conductive layer in the display panel, and the at least two display areas on the display panel where the image data is to be displayed correspond to the at least two first electrodes on the first conductive layer in the display panel one to one.

S102, the display panel obtains the maximum gray-scale value of the image data corresponding to the first display area.

The first display area is one of the at least two display areas. Optionally, in an embodiment of the present invention, the display panel may obtain all gray-scale values of the image data corresponding to the first display area, and then the display panel obtains the maximum gray-scale value from all gray-scale values of the image data. In an embodiment of the invention, the maximum gray-scale value of the image data corresponding to the first display area may also be referred to as a second gray-scale value.

S103, the display panel determines an electrode voltage and a mapping curve according to the maximum gray-scale value.

Alternatively, in an embodiment of the present invention, the display panel may determine the electrode voltage (referred to as a second electrode voltage herein) according to the maximum gray scale value (referred to as a second gray scale value herein) and a formula. The formula may be specifically expressed as: v₁＝V₀-(255-M)*V₀/255. Wherein, V₁Denotes the electrode voltage, V₀Representing a preset voltage value and M representing a maximum gray scale value.

For example, in a case that the display panel is any one of the display panels provided in embodiments of fig. 1 to 8, and at least two first electrodes in the display panel provided in the embodiments of the invention are cathode electrodes and the second electrode is an anode electrode, V may be set to be V₀Preset to the minimum value of ELVSS in normal conditions, for example: 4.4V, which can be determined by a person skilled in the art with a limited number of experiments₀The specific value of-4.4V is only an example and does not constitute a pair of V₀The value of (2) is limited. In this case, the above formula can be specifically expressed as: v₁＝-[4.4-(255-M)*4.4/255]. Then, the display panel may substitute the maximum gray-scale value obtained in S102 as a value of M into the formula to obtain V₁The value of (c). For example, when the maximum gray scale value acquired by the display panel in S102 is 200 (i.e., M is 200), V₁＝-[4.4-(255-200)*4.4/255]I.e. V₁Approximately equal to-3.45V.

For example, in a case that the display panel is any one of the display panels provided in embodiments of fig. 1 to 8, and at least two first electrodes in the display panel provided in the embodiments of the invention are anode electrodes, and the second electrode is a cathode electrode, V may be set to be smaller than V₀Preset to the maximum value of ELVDD in the normal case, for example: 4.6V, which can be determined by a person skilled in the art with a limited number of experiments₀The specific value of (1), 4.6V is only an example and does not constitute a pair of V₀The value of (2) is limited. In this case, the above formula can be specifically expressed as: v₁4.6- (255-M) × 4.6/255. Then, the display panel may substitute the maximum gray-scale value obtained in S102 as a value of M into the formula to obtain V₁The value of (c). For example, when the maximum gray scale value determined by the display panel in S102 is 200 (i.e., M is 200), V₁4.6- (255-₁Approximately equal to 3.60V.

Optionally, in this embodiment of the present invention, the display panel may determine a mapping curve (referred to as a second mapping curve herein) according to the maximum gray-scale value and a preset mapping curve group, where the mapping curve group includes a plurality of mapping curves, and the plurality of mapping curves includes the second mapping curve. The plurality of mapping curves in the mapping curve group are respectively mapping relations between gray-scale values and brightness values when the display panel displays under the condition of different voltage difference values (difference values between the voltage of ELVDD and the voltage of ELVSS in the display panel). Specifically, in the embodiment of the present invention, the method for determining the second mapping curve by the display panel according to the maximum gray scale value and the preset mapping curve group may be implemented by the following steps S103a and S103 b.

S103a, the display panel determines a first brightness value corresponding to the maximum gray scale value according to the maximum gray scale value.

S103b, the display panel selects a mapping curve with the maximum brightness value as the first brightness value from the mapping curve group as a second mapping curve according to the first brightness value.

Alternatively, when there is no mapping curve having the maximum luminance value as the first luminance value in the mapping curve group, the mapping curve having the maximum luminance value closest to the maximum luminance value may be selected as the second mapping curve.

For example, as shown in fig. 10, taking the preset mapping curve group including mapping curve 1 and mapping curve 2 as an example, assuming that mapping curve 1 is a mapping curve of a luminance value and a gray-scale value in a display panel when the display panel is in a normal state. When the maximum gray-scale value of the image data corresponding to the first display area acquired by the display panel is 180, it may be determined that the gray-scale value is 180 according to the mapping curve 1, the corresponding brightness value is 270nit (nit), and then the mapping curve 2 with the maximum brightness value of 270nit (first brightness value) is selected as the second mapping curve. When there is no mapping curve with the maximum brightness value of 270nit in the mapping curve group, the mapping curve with the maximum brightness value closest to 270nit may be selected as the second mapping curve.

And S104, the display panel sets the voltage of the first electrode corresponding to the first display area as the electrode voltage.

For example, when the display panel is any one of the display panels provided in embodiments of fig. 1 to 8 of the present invention, the display panel may set a voltage of the first electrode corresponding to the first display area to the electrode voltage, that is, the electrode voltage is provided to a power supply connected to the first electrode corresponding to the first display area in the display panel, so that the power supply can provide the electrode voltage to the first electrode corresponding to the first display area.

S105, the display panel displays the image data in the first display area according to the mapping curve.

The display panel may display the image data in the first display area according to the mapping relationship between the gray scale value and the luminance value represented by the mapping curve, specifically, the display panel displays the image data in the first display area according to the mapping relationship between the gray scale value and the luminance value represented by the mapping curve, the method for displaying the image data in the first display area is the same as the method for displaying the image data according to the mapping relationship between the gray scale value and the luminance value in the prior art, and for the display panel according to the mapping relationship between the gray scale value and the luminance value represented by the mapping curve, the method for displaying the image data in the first display area may refer to the mapping relationship between the gray scale value and the luminance value in the prior art, which is not described herein again.

It should be noted that, in the embodiment of the present invention, the above-mentioned S102 to S105 are only one display area, namely the first display area, of at least two display areas of the display panel on which the image data is to be displayed, and an exemplary description is given to the control method of the display panel provided in the embodiment of the present invention. And since the first display region can be understood as any one of the at least two display regions, the display panel can control each of the at least two display regions on the display panel to display the image data by using the control method of the display panel shown in S102-S105.

In the control method of the display panel according to the embodiment of the present invention, before displaying image data, the display panel may determine at least two display areas of the image data to be displayed, may acquire an electrode voltage and a mapping curve corresponding to each display area, set a voltage of a first electrode corresponding to each display area to an electrode voltage corresponding to each display area, and display the image data in each display area according to the mapping curve corresponding to each display area. In this way, the brightness of each display area in the display panel can be independently controlled, so that the display effect of the display panel can be improved.

As shown in fig. 11, an embodiment of the present invention provides a method for controlling a display panel, which can be applied to any one of the display panels provided in fig. 1 to 8, and when the display panel displays image data, the method includes:

s201, the display panel determines at least two display areas of the image data displayed on the display panel.

The at least two display areas respectively correspond to the at least two first electrodes in the display panel. For example, when the display panel is any one of the display panels provided in embodiments of fig. 1 to fig. 8 of the present invention, at least two display regions displayed on the display panel correspond to at least two first electrodes on the first conductive layer in the display panel, that is, the number of the display regions displaying image data on the display panel is the same as the number of the first electrodes on the first conductive layer in the display panel, and the at least two display regions displaying image data on the display panel correspond to the at least two first electrodes on the first conductive layer in the display panel one to one.

S202, when the display panel detects the touch pressure acting on the first display area, the display panel obtains a touch pressure value of the touch pressure.

Wherein the first display area is one of the at least two display areas. For example, the first display region may be a touched display region of at least two display regions displayed on the display panel.

Optionally, the detected touch pressure acting on the first display area may be a touch pressure when a user touches the display panel, or may also be a touch pressure when the display panel is touched by using other methods, which may be determined specifically according to actual use requirements, and the embodiment of the present invention is not limited.

Optionally, in the embodiment of the present invention, the touch pressure value may be obtained through a pressure sensing touch layer in the display panel.

S203, the display panel determines the first electrode voltage according to the touch pressure value.

Optionally, in the embodiment of the present invention, the display panel may determine the first electrode voltage corresponding to the first area according to the touch pressure value and a formula. The formula may be specifically expressed as: v₁＝V₀-V₀F/9.8. Wherein, V₁Denotes the first electrode voltage, V₀And F represents a preset voltage value and a touch pressure value.

For example, the display panel is the display surface provided in the embodiments of fig. 1 to 8In the display panel provided by the embodiment of the present invention, when at least two first electrodes are cathode electrodes and the second electrode is an anode electrode, V may be formed₀Preset to the minimum value of ELVSS in the normal case, for example-4.4V, V can be determined by a person skilled in the art with a limited number of experiments₀The specific value of-4.4V is only an example and does not constitute a pair of V₀The value of (2) is limited. In this case, the above formula can be specifically expressed as: v₁＝-[4.4-4.4*F/9.8]. Then, the display panel may substitute the touch pressure value obtained in S203 as a value of F into the formula to obtain V₁The value of (c). For example, when the touch pressure value acquired by the display panel in S203 is 6 newtons (i.e., F is 6), V is set₁＝-[4.4-4.4*6/9.8]I.e. V₁Approximately equal to-1.71V.

For example, in a case that the display panel is any one of the display panels provided in embodiments of fig. 1 to 8, and at least two first electrodes in the display panel provided in the embodiments of the invention are cathode electrodes and the second electrode is an anode electrode, V may be set to be V₀Preset to the maximum value of the usual ELVDD, e.g., 4.6V, and one skilled in the art can determine V through a limited number of experiments₀The specific value of (1), 4.6V is only an example and does not constitute a pair of V₀In this case, the above formula can be specifically expressed as: v₁4.6-4.6 × F/9.8. Then, the display panel may substitute the touch pressure value obtained in S203 as a value of F into the formula to obtain V₁The value of (c). For example, when the touch pressure value acquired by the display panel in S203 is 6 newtons (i.e., F is 6), V is set₁4.6-4.6 x 6/9.8, i.e. V₁Approximately equal to 1.78V.

And S204, the display panel sets the voltage of the first electrode corresponding to the first display area as the first electrode voltage.

For example, when the display panel is any one of the display panels provided in embodiments of fig. 1 to 8 of the present invention, the display panel may set a voltage of a first electrode corresponding to a first display region to the first electrode voltage, that is, the first electrode voltage is provided to a power supply connected to the first electrode corresponding to the first display region in the display panel, so that the power supply can provide the first electrode voltage to the first electrode corresponding to the first display region.

S205, the display panel obtains a first gray scale value.

The first gray scale value is the maximum gray scale value of the image data displayed in the first display area.

Optionally, in an embodiment of the present invention, the display panel may obtain all gray-scale values of the image data displayed in the first display area, and then the display panel obtains the maximum gray-scale value from all gray-scale values of the image data displayed in the first display area.

S206, the display panel determines a first mapping curve according to the first gray-scale value.

Optionally, in this embodiment of the present invention, the display panel may determine the first mapping curve according to the maximum grayscale value and a preset mapping curve group, where the mapping curve group includes a plurality of mapping curves, and the plurality of mapping curves includes the first mapping curve. The plurality of mapping curves are mapping relations between gray-scale values and brightness values when the display panel displays under the condition of various voltage difference values (difference values between the voltage of the ELVDD and the voltage of the ELVSS in the display panel).

Specifically, in the embodiment of the present invention, the method for determining the second mapping curve by the display panel according to the maximum gray-scale value and the preset mapping curve group may be implemented by the following steps S206a and S206 b.

S206a, the display panel determines a first luminance value corresponding to the first gray scale value according to the first gray scale value.

S206b, the display panel selects a mapping curve with the maximum brightness value as the first brightness value from the mapping curve group as the first mapping curve according to the first brightness value.

Alternatively, when there is no mapping curve having the maximum luminance value as the first luminance value in the mapping curve group, the mapping curve having the maximum luminance value closest to the maximum luminance value may be selected as the first mapping curve.

For example, as shown in fig. 10, taking the preset mapping curve group including the mapping curve 1 and the mapping curve 2 as an example, it is assumed that the mapping curve 1 is a mapping curve of a relationship between a luminance value and a gray-scale value of the display panel when the display panel displays image data. When the first gray scale value obtained by the display panel is 180, it may be determined that the gray scale value is 180 according to the mapping curve 1, and the corresponding luminance value is 270nit (nit), and then the mapping curve 2 with the maximum luminance value of 270nit (i.e., the first luminance value) is selected as the first mapping curve. When there is no mapping curve with the maximum brightness value of 270nit in the mapping curve group, the mapping curve with the maximum brightness value closest to 270nit may be selected as the first mapping curve.

S207, the display panel displays the image data in the first display area according to the first mapping curve.

In the embodiment of the present invention, the method for displaying the image data in the first display area by the display panel according to the second mapping curve in S207 is similar to the method for displaying the image data in the first display area by the display panel according to the second mapping curve in S105, and for the method for displaying the image data in the first display area by the display panel according to the second mapping curve in S207, the related description in S105 may be referred to, and details are not repeated herein.

According to the control method of the display panel provided by the embodiment of the invention, when the display panel displays image data, at least two regions where the image data are displayed on the display panel can be determined, and when the display panel detects a touch pressure acting on a first display region, a second electrode voltage and a first mapping curve corresponding to the first display region can be obtained, then the voltage of a first electrode corresponding to the first display region is set as the first electrode voltage, and the image data are displayed in the first display region according to the first mapping curve, so that the brightness of a certain display region in the display panel can be flexibly and independently controlled, and the display effect of the display panel is further improved.

Optionally, with reference to fig. 11, as shown in fig. 12, before displaying the image data (specifically, before S201 in fig. 11), the method for controlling a display panel according to an embodiment of the present invention further includes:

s301, the display panel determines at least two display areas of image data to be displayed.

S302, the display panel acquires a second gray scale value.

The second gray scale value is the maximum gray scale value of the image data corresponding to the first display area.

And S303, the display panel determines a second electrode voltage and a second mapping curve according to the second gray scale value.

S304, the display panel sets the voltage of the first electrode corresponding to the first display region to the second electrode voltage.

S305, the display panel displays the image data in the first display area according to the second mapping curve.

The second gray scale value of fig. 12 may be the maximum gray scale value of fig. 9, the second electrode voltage of fig. 12 may be the electrode voltage of fig. 9, and the second mapping curve of fig. 12 may be the mapping curve of fig. 9. For the descriptions of S301 to S305, reference may be specifically made to the descriptions of S101 to S105, which are not described herein again to avoid redundancy.

It should be noted that, in the embodiment of the present invention, before the above step S201, the display of the display panel may be controlled by the control method of the display panel shown in the above steps S301 to S305, and the display of the display panel may also be controlled by a conventional control method of the display panel. Specifically, the determination may be determined according to actual use requirements, and the embodiment of the present invention is not limited.

In the method for controlling a display panel according to an embodiment of the present invention, the display panel may independently control the display panel to display image data in each display area through the method for controlling a display panel shown in S301 to S305, and after the display panel displays image data in each display area through the method for controlling a display panel shown in S301 to S305, the display panel may further individually control the display panel to display image data in a display area (for example, the first display area) where the touch pressure is detected according to the method for controlling a display panel shown in S202 to S207. That is, the control method of the display panel provided by the embodiment of the present invention can independently control the display panel to display the image data in each display area, thereby independently controlling the brightness of each display area in the display panel, and thus, the display effect of the display panel can be improved. In addition, the control method of the display panel provided by the embodiment of the invention can also independently control the display panel to display the image data in a certain display area (specifically, the display area where the touch pressure is detected), so that the brightness of the certain area in the display panel can be flexibly and independently controlled, and the display effect of the display panel can be further improved.

The foregoing method embodiment describes the solution provided by the embodiment of the present invention from the perspective of a display panel, and it can be understood that, in order to implement the foregoing functions, the display panel includes a hardware structure and/or a software module corresponding to each function. Those of skill in the art will readily appreciate that the present invention can be implemented in hardware or a combination of hardware and computer software, with the exemplary elements and algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

In the embodiment of the present invention, the display device (or the display surface) may be divided into functional modules according to the method embodiments, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, the division of the modules in the embodiment of the present invention is schematic, and is only a logic function division, and another division manner may be used in actual implementation.

For example, in the case of dividing each functional module according to each function, a schematic structural diagram of the display device provided in the embodiment of the present invention is shown in fig. 13. In fig. 13, the display device includes: a determination module 31, an acquisition module 32, a control module 33 and a display module 34.

The determining module 31 is configured to support the display device to perform S101, S103, S201, S203, S206, S301, and S303 performed by the display panel in the above method embodiment. The obtaining module 32 is configured to support the display device to perform S302, S102, S202, S205, and S302 performed by the display panel in the above method embodiment. The control module 33 is used to support the display device to execute S104, S204, and S304 executed by the display panel in the above method embodiment. The display module 34 is used to support the display device to perform S105, S207 and S105 performed by the display panel in the above method embodiment.

The determination module 31, the acquisition module 32, the control module 33, and the display module 34 described above may also be used to perform other processes for the techniques described herein.

It should be noted that all relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

For example, in the case of using an integrated unit, a schematic structural diagram of a display device provided by an embodiment of the present invention is shown in fig. 14. In fig. 14, the display device includes: a processing module 41. The processing module 41 is used for controlling and managing the actions of the display device, for example, executing the steps of the determining module 31, the obtaining module 32, the controlling module 33 and the displaying module 34. Further, as shown in fig. 14, the display device may further include a storage module 42, and the storage module 42 is used for storing program codes and data of the display device, wherein the program codes include instructions.

Optionally, an embodiment of the present invention provides a display panel (or a display device), where the display panel includes a processor and a memory; wherein the memory is configured to store executable program code, the program code comprising instructions that, when executed by the processor, cause the display panel processor to execute the computer-executable instructions stored in the memory to cause the display panel to perform a control method of the display panel (e.g., the control method of the display panel as shown in fig. 9, 11 and 12) shown in the embodiment of the present invention.

The processor may be a Central Processing Unit (CPU), a general purpose processor, a Digital Signal Processor (DSP), an application-specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others.

The memory may include a volatile memory (volatile memory), such as a random-access memory (RAM); the memory may also include a non-volatile memory (non-volatile memory), such as a read-only memory (ROM), a flash memory (flash memory), a Hard Disk Drive (HDD) or a solid-state drive (SSD); the memory may also comprise a combination of memories of the kind described above.

Alternatively, an embodiment of the present invention provides a computer-readable storage medium, in which one or more programs are stored, where the one or more programs include computer-executable instructions, and when a processor of a display panel (or a display device) executes the computer-executable instructions, the display panel executes a control method of the display panel according to an embodiment of the present invention (for example, the control method of the display panel shown in fig. 9, 11, and 12).

In the control method of the display panel provided in the embodiment of the present invention, if the functions of the display panel are implemented in the form of software functional units and sold or used as an independent product, the functions of the display panel may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a processor to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: flash memory, removable hard drive, read only memory, random access memory, magnetic or optical disk, and the like.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A display panel comprising a first conductive layer, an organic electroluminescent layer and a second conductive layer,

the first conducting layer comprises at least two first electrodes, the second conducting layer comprises a second electrode, the at least two first electrodes respectively correspond to at least two display areas of the display panel, each of the at least two first electrodes is respectively connected with a power supply, and the power supplies connected with the first electrodes are different power supplies;

according to formula V₁＝V₀-(255-M)*V₀/255 determining the value of the supply voltage for each first electrode, wherein V₁A value of a supply voltage, V, representing the first electrode connection₀And M represents the maximum gray-scale value of the image data displayed in the display area corresponding to the first electrode.

2. The display panel according to claim 1, further comprising a substrate on which a signal line to which each first electrode is connected with a power supply is provided; the signal line is connected with the first electrode through a via hole.

3. The display panel according to claim 1, wherein the display panel further comprises a pressure-sensitive touch layer, and a signal line connecting each first electrode with a power supply is disposed on the pressure-sensitive touch layer; the signal line is connected with the first electrode through a via hole.

4. The display panel according to any one of claims 1 to 3,

the at least two first electrodes are cathode electrodes, and the second electrode is an anode electrode;

alternatively, the first and second electrodes may be,

the at least two first electrodes are anode electrodes, and the second electrode is a cathode electrode.

5. A display device characterized by comprising the display panel according to any one of claims 1 to 4.

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

before displaying image data, determining at least two display areas for displaying the image data, wherein the at least two display areas respectively correspond to at least two first electrodes in the display panel;

acquiring a maximum gray-scale value of image data corresponding to a first display area, wherein the first display area is one of the at least two display areas;

according to formula V₁＝V₀-(255-M)*V₀/255 determining the value of the supply voltage of the first electrode, wherein V₁Representing the value of the supply voltage, V, of said first electrode₀Representing a preset voltage value, and M represents the maximum gray scale value;

determining a first luminance value corresponding to the maximum gray scale value;

selecting a target mapping curve from a preset mapping curve group as the mapping curve according to the first brightness value, wherein the target mapping curve is a mapping curve with the maximum brightness value as the first brightness value;

setting a voltage of a first electrode corresponding to the first display region to a power supply voltage value of the first electrode;

and displaying the image data in the first display area according to the mapping curve.

7. A display device, comprising: the device comprises a determining module, an obtaining module, a control module and a display module; wherein the content of the first and second substances,

the determining module is configured to determine at least two display areas in which the image data is to be displayed before displaying the image data, where the at least two display areas correspond to at least two first electrodes in the display device, respectively;

the acquisition module is configured to acquire a maximum gray scale value of image data corresponding to a first display area, where the first display area is one of the at least two display areas;

the determination module is further configured to determine the value according to formula V₁＝V₀-(255-M)*V₀/255 determining the value of the supply voltage of the first electrode, wherein V₁Representing the value of the supply voltage, V, of said first electrode₀Representing a preset voltage value, and M represents the maximum gray scale value;

the determining module is further configured to determine a first luminance value corresponding to the maximum gray scale value; selecting a target mapping curve from a preset mapping curve group as the mapping curve according to the first brightness value; the target mapping curve is a mapping curve of which the maximum brightness value is the first brightness value;

the control module is used for setting the voltage of a first electrode corresponding to the first display area to be the power supply voltage value of the first electrode determined by the determination module;

and the display module is used for displaying the image data in the first display area according to the mapping curve determined by the determination module.