CN111833812A - Display panel, display device and display method - Google Patents
Display panel, display device and display method Download PDFInfo
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- CN111833812A CN111833812A CN202010415691.7A CN202010415691A CN111833812A CN 111833812 A CN111833812 A CN 111833812A CN 202010415691 A CN202010415691 A CN 202010415691A CN 111833812 A CN111833812 A CN 111833812A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/302—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements characterised by the form or geometrical disposition of the individual elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
Abstract
The application discloses a display panel, a display device and a display method, wherein the display panel comprises a first display area and a second display area, a plurality of first sub-pixels are arranged in the first display area, a plurality of second sub-pixels are arranged in the second display area, and the light transmittance of the first display area is greater than that of the second display area; each first sub-pixel comprises a first light-emitting device, a control circuit and a first pixel driving circuit which is electrically connected with the first light-emitting device and used for driving the first light-emitting device to emit light; each second sub-pixel comprises a second light-emitting device and a second pixel driving circuit which is electrically connected with the second light-emitting device and used for driving the second light-emitting device to emit light; the control circuit is electrically connected with at least one first pixel driving circuit and used for controlling the connection and disconnection of the first pixel driving circuit and the first light-emitting device. Through the mode, the first display area corresponding to the camera can be controlled independently.
Description
Technical Field
The application belongs to the technical field of display, and particularly relates to a display panel, a display device and a display method.
Background
The screen occupation ratio of the display panel is always the focus of attention of users, and the concept of a full screen is developed in order to meet the requirement of large screen occupation ratio. In order to achieve the purpose of a full-screen, a new camera technology under a screen is provided, that is, a mode of reducing the local pixel density to increase the light transmittance of the screen is adopted, and the camera is arranged below the display screen.
When the external environment information is collected by the camera, if the display area corresponding to the position of the camera displays the collected picture information, the light transmittance above the camera is affected, and the external environment information collected by the camera is possibly distorted.
Disclosure of Invention
The application provides a display panel, a display device and a display method, so that a first display area corresponding to a camera can be controlled independently.
In order to solve the technical problem, the application adopts a technical scheme that: provided is a display panel including: the display device comprises a first display area and a second display area, wherein a plurality of first sub-pixels are arranged in the first display area, a plurality of second sub-pixels are arranged in the second display area, and the light transmittance of the first display area is greater than that of the second display area; each first sub-pixel comprises a first light-emitting device, a control circuit and a first pixel driving circuit which is electrically connected with the first light-emitting device and used for driving the first light-emitting device to emit light; each second sub-pixel comprises a second light-emitting device and a second pixel driving circuit which is electrically connected with the second light-emitting device and used for driving the second light-emitting device to emit light; the control circuit is electrically connected with at least one first pixel driving circuit and used for controlling the connection and disconnection of the first pixel driving circuit and the first light-emitting device.
In order to solve the above technical problem, the present application adopts another technical solution: provided is a display device including: the display panel described in any of the above embodiments; and the camera is positioned on one side of the non-display surface of the display panel and is arranged at the position of the first display area.
In order to solve the above technical problem, another technical solution adopted by the present application is: provided is a display method including: responding to the start of the operation of a camera, controlling a first pixel driving circuit to be disconnected from a corresponding first light-emitting device by a control circuit of a plurality of first sub-pixels in a first display area corresponding to the position of the camera so as to enable the first light-emitting device in the first display area to be in a non-light-emitting state; in response to the stop of the camera, the control circuit controls the first pixel driving circuit to be conducted with the corresponding first light-emitting device, so that the first light-emitting device in the first display area is driven by the first pixel driving circuit.
The beneficial effect of this application is: the display panel comprises a first display area and a second display area, wherein the light transmittance of the first display area is greater than that of the second display area, the position of the first display area can correspond to that of a camera, a plurality of first sub-pixels are arranged in the first display area, and each first sub-pixel comprises a control circuit, a first pixel driving circuit and a first light-emitting device; the control circuit in the first sub-pixel is electrically connected with at least one first pixel driving circuit and used for controlling the connection and disconnection of the first pixel driving circuit and the first light-emitting device; for example, when the camera operates, the control circuit controls the first pixel driving circuit and the corresponding first light-emitting device to be disconnected, so that the corresponding first light-emitting device is in a non-light-emitting state; when the camera does not work, the control circuit controls the first pixel driving circuit and the corresponding first light-emitting device to be conducted, so that the corresponding first light-emitting device is driven by the first pixel driving circuit. The purpose that can realize the first light emitting device of the first display area of independent control through introducing control circuit in this application promptly can be in the state of not luminous for the first display area of its corresponding position department of camera during operation always, and the picture information of gathering can not be shown in first display area, can not influence the luminousness of camera top, ensures the authenticity of the external environment information that the camera gathered.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of an embodiment of the first sub-pixel of FIG. 1;
FIG. 3 is a schematic structural diagram of an embodiment of the second sub-pixel in FIG. 1;
FIG. 4 is a circuit diagram of one embodiment of the first sub-pixel of FIG. 2;
FIG. 5 is a timing diagram illustrating an embodiment of the first pixel driving circuit of FIG. 4;
FIG. 6 is a schematic structural diagram of another embodiment of the first sub-pixel of FIG. 1;
FIG. 7 is a circuit diagram of one embodiment of the first sub-pixel of FIG. 6;
FIG. 8 is a timing diagram illustrating an embodiment of the first pixel driving circuit of FIG. 7 when the camera does not operate;
FIG. 9 is a timing diagram illustrating an embodiment of the first pixel driving circuit of FIG. 7 when the camera is in operation;
FIG. 10 is a schematic structural diagram of an embodiment of a display device according to the present application;
fig. 11 is a flowchart illustrating an embodiment of a display method according to the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a display panel according to the present application, where the display panel includes a first display area 10 and a second display area 12, a plurality of first sub-pixels (not shown in fig. 1) are disposed in the first display area 10, a plurality of second sub-pixels (not shown in fig. 1) are disposed in the second display area 12, and a light transmittance of the first display area 10 is greater than a light transmittance of the second display area 12, a position of the first display area 10 may correspond to a position of a camera, and the camera may be a front camera. Referring to fig. 2 and 3, fig. 2 is a schematic structural diagram of an embodiment of the first sub-pixel in fig. 1, and fig. 3 is a schematic structural diagram of an embodiment of the second sub-pixel in fig. 1. Each of the first sub-pixels includes a first pixel driving circuit 140, a control circuit 142, and a first light emitting device 144, and each of the second sub-pixels includes a second pixel driving circuit 160 and a second light emitting device 162. In this embodiment, the first light emitting device 144 and the second light emitting device 162 may be OLED light emitting devices, etc., the arrangement density of the first light emitting device 144 may be smaller than that of the second light emitting device 162, and the size of the first light emitting device 144 may also be smaller than that of the second light emitting device 162, so as to achieve the purpose of increasing the light transmittance of the first display area 10. In addition, for the convenience of display panel preparation, the circuit structures of the first pixel driving circuit 140 and the second pixel driving circuit 160 may be the same; of course, in other embodiments, the structures of the first pixel driving circuit 140 and the second pixel driving circuit 160 may be different.
The second pixel driving circuit 160 is electrically connected to a corresponding second light emitting device 162 to drive the corresponding second light emitting device 162 to emit light. The first pixel driving circuit 140 is electrically connected to a corresponding first light emitting device 144 to drive the corresponding first light emitting device 144 to emit light. The control circuit 142 is electrically connected to at least one first pixel driving circuit 140, and is configured to control on/off of the first pixel driving circuit 140 and the first light emitting device 144, that is, to determine whether to drive the corresponding first light emitting device 144 by using the first pixel driving circuit 140; when the camera operates, the control circuit 142 determines that the first pixel driving circuit 140 and the corresponding first light-emitting device 144 are disconnected, so that the corresponding first light-emitting device 144 is in a non-light-emitting state; when the camera is not in operation, the control circuit 142 determines that the first pixel driving circuit 140 and the corresponding first light emitting device 144 are turned on, so that the corresponding first light emitting device 144 is driven by the first pixel driving circuit 140.
In order to solve the above mentioned problems in the background art, a method commonly used at present is: the method comprises the steps of obtaining an image of external environment information collected by a camera, preprocessing the image to enable the image of a region corresponding to the position of the camera to be black, and displaying the preprocessed image on a display screen. And the scheme that this application provided need not carry out the preliminary treatment to formation of image, can realize the purpose of the first light emitting device 144 of the first display area 10 of independent control through introducing control circuit 142 in this application, can be so that the first display area 10 of its corresponding position department of camera during operation is in the state of not giving out light always, and first display area 10 can not show the picture information of gathering, can not influence the luminousness above the camera, ensures the authenticity of the external environment information that the camera gathered.
In one embodiment, as shown in fig. 2, the control circuit 142 may be disposed on a path where the first pixel driving circuit 140 and the corresponding first light emitting device 144 are located, and the on/off of the control circuit 142 may be controlled by the timing controller, so as to determine whether to open the path where the first pixel driving circuit 140 and the corresponding first light emitting device 144 are located. When the camera works, the timing controller controls the control circuit 142 to be switched off, so that the first pixel driving circuit 140 and the corresponding first light-emitting device 144 are switched off, and the first pixel driving circuit 140 cannot drive the corresponding first light-emitting device 144; when the camera is not in operation, the timing controller controls the control circuit 142 to be turned on, so that the first pixel driving circuit 140 and the corresponding first light emitting device 144 are turned on, and the first pixel driving circuit 140 can drive the corresponding first light emitting device 144. The control circuit 142 is simple in design and structure and easy to implement.
In an application scenario, as shown in fig. 4, fig. 4 is a circuit diagram of an embodiment of the first sub-pixel in fig. 2. The control circuit 142 includes: and a first switch K1 including a control terminal K10, a first path terminal K12 and a second path terminal K14, wherein the first path terminal K12 and the second path terminal K14 of the first switch K1 are respectively connected to the paths where the first pixel driving circuit 140 and the corresponding first light emitting device 144 are located, and the control terminal K10 receives a first control signal CS transmitted by the timing controller to determine whether the first switch K1 is turned on according to the first control signal CS, so as to determine whether the paths are turned on. The control circuit 142 is simple in design and structure and easy to implement. Preferably, the first switch K1 may be a switching transistor.
For example, in the present embodiment, the first pixel driving circuit 140 may include:
a power supply unit, configured to receive the current-stage light-emitting signal En and provide a power supply signal to the first light-emitting device 144 according to the current-stage light-emitting signal En; specifically, as shown in fig. 4, when the first pixel driving circuit 140 is a 7T1C circuit, the power supply unit includes switching transistors T4 and T7, control terminals of T4 and T7 receive the present-stage light-emitting signal En, a first path terminal of T7 receives the power supply signal ELVDD, and a second path terminal of T7 is connected to the driving unit (i.e., the driving transistor T1 in fig. 4); a first path terminal of T4 is connected to the driving unit (i.e., the driving transistor T1 in fig. 4), and a second path terminal of T4 is connected to the first path terminal K12 of the first switch K1.
The drive signal writing unit receives the scanning signal Sn of the current stage and writes the drive signal under the drive of the scanning signal Sn of the current stage; specifically, as shown in fig. 4, the driving signal writing unit includes switching transistors T2 and T3.
And a driving unit connected to the driving signal writing unit and the power supply unit to write the saving driving signal and to generate a driving current matched to the driving signal using the power signal according to the driving signal, thereby driving the first light emitting device 144 using the driving current when the first switch K1 is turned on. Specifically, as shown in fig. 4, the driving unit includes a driving transistor T1.
Of course, in other embodiments, the first pixel driving circuit 140 may further include: the initialization unit receives the initialization signal and the reference signal ELVSS through the reference signal metal line to initialize the first light emitting device 144 with the reference signal ELVSS according to the initialization signal. Specifically, as shown in fig. 4, the initialization unit includes switching transistors T5 and T6.
Of course, in other embodiments, the first pixel driving circuit 140 may have other structures, for example, a 2T1C driving circuit, a 3T1C driving circuit, a 3T2C driving circuit, a 5T1C driving circuit, a 6T1C driving circuit, a 7T2C driving circuit, and an 8T1C circuit.
In one example, as shown in fig. 4, the first switch K1 may be a PMOS transistor, and all transistors in the first pixel driving circuit 140 are PMOS transistors. Referring to fig. 5, fig. 5 is a timing diagram illustrating an embodiment of the first pixel driving circuit shown in fig. 4. The normal operation of the first pixel driving circuit 140 in fig. 4 is as follows:
A. an initialization stage: in the time period range of T1, Sn-1 is a low level signal, T5 and T6 are conducted, ELVSS is written into an N1 node, and T1 is conducted; en is a low level signal, T4 and T7 are turned on, a fixed voltage is supplied to each electrode of T1, the hysteresis of T1 is compensated, and a loop is formed through T7, T1, T4 and T6 to prevent the first light emitting device 144 from emitting light to increase the black state brightness; in the time period of T2, En is a high level signal, T7 and T4 are turned off, and the current flowing through T1 is blocked.
B. A data writing stage: in the time period range of T3, Sn-1 is a high level signal, Sn is a low level signal, T5, T6 are turned off, T2 and T3 are turned on, T1 is kept on due to the presence of the storage capacitor Cst, and a Dm signal is supplied to the N1 node.
C. A light emitting stage: in the time period T4, En is a low level signal, and T4 and T7 are turned on. At this time, when the first control signal CS received by the control terminal K10 of the first switch K1 is a high-level signal, the first switch K1 is turned off, so that the paths between the first pixel driving circuit 140 and the first light emitting device 144 are disconnected, and the first pixel driving circuit 140 cannot drive the first light emitting device 144; when the first control signal CS received by the control terminal 10 of the first switch K1 is a low level signal, the first switch K1 is turned on, so that the paths of the first pixel driving circuit 140 and the first light emitting device 144 can be turned on, the first pixel driving circuit 140 can drive the first light emitting device 144, and the first light emitting device 144 can emit light rays with different brightness corresponding to the data voltage Dm written in the t3 time period.
Of course, in other examples, the first switch K1 may also be an NMOS transistor, and/or at least some of the transistors in the first pixel driving circuit 140 may be NMOS transistors, which is not limited in this application.
In another embodiment, referring to fig. 6 and 7, fig. 6 is a schematic structural diagram of another embodiment of the first sub-pixel in fig. 1, and fig. 7 is a schematic circuit structural diagram of an embodiment of the first sub-pixel in fig. 6. The control circuit 142a is an enable control circuit of the first pixel driving circuit 140a, and determines whether the control circuit 142a inputs an enable signal to the first pixel driving circuit 140a through the timing controller. When the camera operates, the timing controller controls the control circuit 142a not to input an enable signal to the first pixel driving circuit 140a, so that the first pixel driving circuit 140a is in a non-operating state; when the camera is not in operation, the timing controller controls the control circuit 142a to input an enable signal to the first pixel driving circuit 140a, so that the first pixel driving circuit 140a is in an operating state, and the corresponding first light emitting device 144a is driven according to the enable signal. The control circuit 142a has a simple design and structure, and is easy to implement.
In one application scenario, as shown in fig. 7, the control circuit 142a includes a second switch K2 and a third switch K3. Specifically, the second switch K2 includes a control terminal K20, a first path terminal K22, and a second path terminal K24; the third switch K3 includes a control terminal K30, a first path terminal K32, and a second path terminal K34. A control terminal K20 of the second switch K2 is configured to receive the second control signal CS1 transmitted by the timing controller, and a first path terminal K22 is configured to receive the non-operating signal PVGH; a control terminal K30 of the third switch K3 is used for receiving a third control signal CS2 transmitted by the timing controller, a first path terminal K32 of the third switch K3 is connected to a second path terminal K24 of the second switch K2, and a second path terminal K34 of the third switch K3 is used for receiving an enable signal (e.g., the present-stage light-emitting signal En); a connection point P between the second path terminal K24 of the second switch K2 and the first path terminal K32 of the third switch K3 serves as an output terminal of the control circuit 142a to connect the first pixel driving circuit 140 a.
When the second switch K2 is in a turned-on state under the control of the second control signal CS1 and the third switch K3 is in a turned-off state under the control of the third control signal CS2, the output terminal of the control circuit 142a outputs the non-operation signal PVGH to put the first pixel driving circuit 140a in a non-operation state; when the second switch K2 is turned off by the second control signal CS1 and the third switch K3 is turned on by the third control signal CS2, the output terminal of the control circuit 142a outputs an enable signal to enable the first pixel driving circuit 140a to be in an operating state. The control circuit 142a has a simple design and structure, and is easy to implement. Preferably, the first switch K2 and/or the third switch K3 may be switching transistors.
For example, in the present embodiment, the first pixel driving circuit 140a specifically includes:
a power supply unit connected to an output terminal of the control circuit 142 a; when the control circuit 142a outputs an enable signal to the power supply unit, the power supply unit provides a power supply signal to the first light emitting device 144a according to the enable signal, wherein the enable signal is the present-stage light emitting signal En; when the control circuit 142a outputs the non-operation signal PVGH to the power supply unit, the power supply unit is not operated. Specifically, as shown in fig. 7, when the first pixel driving circuit 140a is a 7T1C circuit, the power supply unit includes switching transistors T4a and T7a, and control terminals of T4a and T7a are connected to the output terminal of the control circuit 142 a.
The drive signal writing unit receives the scanning signal Sn of the current stage and writes the drive signal under the drive of the scanning signal Sn of the current stage; specifically, as shown in fig. 7, the driving signal writing unit includes switching transistors T2a and T3 a.
And a driving unit connected to the driving signal writing unit and the power supply unit to write the storage driving signal and to generate a driving current matched to the driving signal using the power signal according to the driving signal, thereby driving the first light emitting device 144a using the driving current when the power supply unit is turned on. Specifically, as shown in fig. 7, the driving unit includes a driving transistor T1 a.
Of course, in other embodiments, the first pixel driving circuit 140a may further include: the initialization unit receives the initialization signal and the reference signal ELVSS through the reference signal metal line to initialize the first light emitting device 144a with the reference signal ELVSS according to the initialization signal. Specifically, as shown in fig. 7, the initialization unit includes switching transistors T5a and T6 a.
Of course, in other embodiments, the first pixel driving circuit 140a may have other structures, for example, a 2T1C driving circuit, a 3T1C driving circuit, a 3T2C driving circuit, a 5T1C driving circuit, a 6T1C driving circuit, a 7T2C driving circuit, and an 8T1C driving circuit.
In one example, as shown in fig. 7, the second switch K2 and the third switch K3 may be PMOS transistors, the driving transistor T1a and other switching transistors in the first pixel driving circuit 140a are also PMOS transistors, the non-operating signal PVGH is a high level signal, and the enable signal is the present stage light emitting signal En.
When the camera does not work, the second control signal CS1 is a high level signal, and the second switch K2 is turned off; the third control signal CS2 is a low level signal, and the third switch K3 is turned on; the control terminals of the switching transistors T7a and T4a of the power supply unit in the first pixel driving circuit 140a input the enable signal (i.e., the present-stage light emission signal En), the power supply unit is in a conductive state, and the first pixel driving circuit 140a can drive the first light emitting device 144 a. At this time, as shown in fig. 8, fig. 8 is a timing diagram of an embodiment of the first pixel driving circuit in fig. 7 when the camera does not operate. At this time, the working flow of the first pixel driving circuit 140a is similar to the corresponding working flow in fig. 5, and is not repeated herein.
When the camera works, the second control signal CS1 is a low level signal, and the second switch K2 is turned on; the third control signal CS2 is a high level signal, and the third switch K3 is turned off; the control terminals of the switching transistors T7a and T4a of the power supply unit in the first pixel driving circuit 140a input the non-operation signal PVGH of high level, the power supply unit is in an off state, and the first pixel driving circuit 140a cannot drive the first light emitting device 144a to emit light. At this time, as shown in fig. 9, fig. 9 is a timing diagram of an embodiment of the first pixel driving circuit in fig. 7 when the camera is in operation.
Of course, in other embodiments, the second switch K2 and the third switch K3 may also be NMOS transistors, or one of them may be an NMOS transistor, and the other one may be a PMOS transistor, which is not limited in this application. And/or, at least some of the transistors of the first pixel driving circuit 140a may be NMOS transistors.
It should be noted that, in the above embodiments, the control signals in the control circuits 142, 142a are from the timing controller, and in other embodiments, the control signals may also be directly provided by a chip, which is not limited in this application.
Referring to fig. 10, fig. 10 is a schematic structural diagram of an embodiment of a display device according to the present application. The display device includes the display panel 20 and a camera (not shown) in any of the embodiments, the camera is located on the non-display surface side of the display panel 20 and is disposed at the position of the first display area 200.
In one embodiment, with continued reference to fig. 10, the display device provided by the present application may further include a timing controller 24 electrically connected to the control circuit in the first display region 200 for applying a control signal to the control circuit. For example, as shown in fig. 4, the first control signal CS may be provided by the timing controller 24; for another example, as shown in fig. 7, the second control signal CS1 and the third control signal CS2 may be provided by the timing controller 24. This design can simplify the structure of the display device.
Of course, in other embodiments, as shown in fig. 10, the display device may further include a scan driver 26, a data driver 28, and an emission control driver 22, and the plurality of first sub-pixels in the first display region 200 and the plurality of second sub-pixels in the second display region 202 are connected to the scan lines, the data lines, and the emission control lines, respectively. The scan driver 26 is for sequentially supplying scan signals to the scan lines, the data driver 28 is for supplying data signals to the data lines, and the light emission control driver 22 is for supplying electro-luminescence signals to the light emission control lines. And the scan driver 26, the data driver 28, and the light emission control driver 22 are controlled by the timing controller 24.
Referring to fig. 11, fig. 11 is a schematic flowchart illustrating an embodiment of a display method according to the present application, the display method including:
s101: and responding to the start of the camera, and controlling the first pixel driving circuit to be disconnected from the corresponding first light-emitting device by the control circuit of the first sub-pixels in the first display area corresponding to the position of the camera so as to enable the first light-emitting device in the first display area to be in a non-light-emitting state.
Specifically, the process of implementing step S101 may be: the chip in the display device receives a signal for starting the camera to work and transmits the signal to the time schedule controller, so that the time schedule controller can send a corresponding control signal to the control circuit, and the control circuit enables the corresponding first pixel driving circuit not to drive the first light-emitting device. For example, as shown in fig. 4, the timing controller may transmit a high level signal to the control terminal of the first switch to turn off the first switch; for another example, as shown in fig. 7, the timing controller may send a low level signal to the control terminal of the second switch and a high level signal to the control terminal of the third switch, so that the second switch is turned on and the third switch is turned off, and the first pixel driving circuit cannot receive the enable signal.
Of course, in other embodiments, the chip may also directly transmit the control signal to the control circuit without passing through a timing controller.
S102: and responding to the stop of the camera, the control circuit controls the first pixel driving circuit to be conducted with the corresponding first light-emitting device, so that the first light-emitting device in the first display area is driven by the first pixel driving circuit.
Specifically, the process of implementing step S102 may be: the chip in the display device receives a signal for stopping the camera and transmits the signal to the time schedule controller, and the time schedule controller sends a corresponding control signal to the control circuit, so that the control circuit drives the first light-emitting device by using the corresponding first pixel driving circuit. For example, as shown in fig. 4, the timing controller may transmit a low level signal to the control terminal of the first switch to turn on the first switch; for another example, as shown in fig. 7, the timing controller may send a high level signal to the control terminal of the second switch and a low level signal to the control terminal of the third switch, so that the second switch is turned off and the third switch is turned on, and the first pixel driving circuit may receive the enable signal.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.
Claims (10)
1. A display panel, comprising:
the display device comprises a first display area and a second display area, wherein a plurality of first sub-pixels are arranged in the first display area, a plurality of second sub-pixels are arranged in the second display area, and the light transmittance of the first display area is greater than that of the second display area;
each first sub-pixel comprises a first light-emitting device, a control circuit and a first pixel driving circuit which is electrically connected with the first light-emitting device and used for driving the first light-emitting device to emit light; each second sub-pixel comprises a second light-emitting device and a second pixel driving circuit which is electrically connected with the second light-emitting device and used for driving the second light-emitting device to emit light;
the control circuit is electrically connected with at least one first pixel driving circuit and used for controlling the connection and disconnection of the first pixel driving circuit and the first light-emitting device.
2. The display panel according to claim 1,
the control circuit is arranged on a path where the first pixel driving circuit and the corresponding first light-emitting device are located, and the on-off of the control circuit is controlled through the time schedule controller so as to determine whether to start the path where the corresponding first pixel driving circuit and the corresponding first light-emitting device are located;
when the camera works, the time sequence controller controls the control circuit to be disconnected so as to disconnect the first pixel driving circuit and the corresponding first light-emitting device, and the first pixel driving circuit cannot drive the corresponding first light-emitting device; and when the camera does not work, the time schedule controller controls the control circuit to be conducted so as to enable the first pixel driving circuit and the corresponding passage of the first light-emitting device to be conducted, and the first pixel driving circuit can drive the corresponding first light-emitting device.
3. The display panel according to claim 2, wherein the control circuit comprises:
the first switch comprises a control end, a first path end and a second path end, wherein the first path end and the second path end of the first switch are respectively connected to the first pixel driving circuit and a path where the corresponding first light-emitting device is located, and the control end receives a first control signal transmitted by the time schedule controller so as to determine whether the first switch is conducted according to the first control signal and further determine whether the path is conducted;
preferably, the first switch is selected from a switching transistor.
4. The display panel according to claim 1,
the control circuit is an enabling control circuit of the first pixel driving circuit, and whether the control circuit inputs an enabling signal to the first pixel driving circuit is determined through a time schedule controller;
when the camera works, the time sequence controller controls the control circuit not to input the enabling signal to the first pixel driving circuit so as to enable the first pixel driving circuit to be in a non-working state, and the first pixel driving circuit cannot drive the corresponding first light-emitting device; and when the camera is not in work, the time schedule controller controls the control circuit to input the enabling signal to the first pixel driving circuit so as to enable the first pixel driving circuit to be in a working state, and therefore the corresponding first light-emitting device is driven according to the enabling signal.
5. The display panel according to claim 4, wherein the control circuit comprises:
the second switch comprises a control end, a first path end and a second path end, wherein the control end of the second switch is used for receiving a second control signal transmitted by the time schedule controller, and the first path end is used for receiving a non-working signal;
a third switch including a control terminal, a first path terminal and a second path terminal, wherein the control terminal of the third switch is configured to receive a third control signal transmitted by the timing controller, the first path terminal of the third switch is connected to the second path terminal of the second switch, and the second path terminal of the third switch is configured to receive the enable signal;
wherein a junction between the second path terminal of the second switch and the first path terminal of the third switch serves as an output terminal of the control circuit to connect the first pixel driving circuit;
when the second switch is in a conducting state under the control of the second control signal and the third switch is in a closing state under the control of the third control signal, the output end of the control circuit outputs the non-working signal to enable the first pixel driving circuit to be in a non-working state; when the second switch is in an off state under the control of the second control signal and the third switch is in an on state under the control of the third control signal, the output end of the control circuit outputs the enable signal to enable the first pixel driving circuit to be in an operating state;
preferably, the second switch and/or the third switch is selected from a switching transistor.
6. The display panel according to claim 5, wherein the first pixel driving circuit comprises:
the power supply unit is connected with the output end of the control circuit; when the control circuit outputs the enable signal to the power supply unit, the power supply unit provides a power supply signal for the first light-emitting device according to the enable signal, wherein the enable signal is a current-stage light-emitting signal; when the control circuit outputs the non-working signal to the power supply unit, the power supply unit does not work;
the driving signal writing unit receives the scanning signal of the current stage and writes the driving signal under the driving of the scanning signal of the current stage;
and the driving unit is connected with the driving signal writing unit and the power supply unit so as to write and store the driving signal, and generates a driving current matched with the driving signal by using the power supply signal according to the driving signal, so that the first light-emitting device is driven by using the driving current.
7. The display panel according to claim 1,
the first pixel driving circuit is selected from a 2T1C driving circuit, a 3T1C driving circuit, a 3T2C driving circuit, a 5T1C driving circuit, a 6T1C driving circuit, a 7T1C driving circuit and a 7T2C driving circuit; the second driving circuit is selected from a 2T1C driving circuit, a 3T1C driving circuit, a 3T2C driving circuit, a 5T1C driving circuit, a 6T1C driving circuit, a 7T1C driving circuit and a 7T2C driving circuit.
8. A display device, comprising:
the display panel of any one of claims 1-7;
and the camera is positioned on one side of the non-display surface of the display panel and is arranged at the position of the first display area.
9. The display device according to claim 8, further comprising:
and the time schedule controller is electrically connected with the control circuit and is used for applying a control signal to the control circuit.
10. A display method, comprising:
responding to the start of the operation of a camera, controlling a first pixel driving circuit to be disconnected from a corresponding first light-emitting device by a control circuit of a plurality of first sub-pixels in a first display area corresponding to the position of the camera so as to enable the first light-emitting device in the first display area to be in a non-light-emitting state;
in response to the stop of the camera, the control circuit controls the first pixel driving circuit to be conducted with the corresponding first light-emitting device, so that the first light-emitting device in the first display area is driven by the first pixel driving circuit.
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| CN202010415691.7A CN111833812B (en) | 2020-05-16 | 2020-05-16 | Display panel, display device and display method |
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| CN202010415691.7A CN111833812B (en) | 2020-05-16 | 2020-05-16 | Display panel, display device and display method |
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