CN113838413B - Display panel and display device - Google Patents

Display panel and display device Download PDF

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Publication number
CN113838413B
CN113838413B CN202111315802.8A CN202111315802A CN113838413B CN 113838413 B CN113838413 B CN 113838413B CN 202111315802 A CN202111315802 A CN 202111315802A CN 113838413 B CN113838413 B CN 113838413B
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China
Prior art keywords
electrically connected
pixel
sub
data line
light
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CN202111315802.8A
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Chinese (zh)
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CN113838413A (en
Inventor
王祖慧
张欢喜
马向文
李欣
李孝文
敦栋梁
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Wuhan Tianma Microelectronics Co Ltd
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Wuhan Tianma Microelectronics Co Ltd
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Priority to CN202111315802.8A priority Critical patent/CN113838413B/en
Publication of CN113838413A publication Critical patent/CN113838413A/en
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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]
    • 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
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • 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]
    • 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
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electroluminescent Light Sources (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The embodiment of the application provides a display panel and a display device, wherein the display panel comprises a conventional display area and a light-transmitting display area, and the conventional display area at least partially surrounds the light-transmitting display area; the conventional display area comprises a plurality of first sub-pixels, and the first sub-pixels are electrically connected with the first data lines; the light-transmitting display area comprises a plurality of second sub-pixels, and the second sub-pixels are electrically connected with the second data lines. By arranging different data lines for the light-transmitting display area and the conventional display area, the light-emitting brightness of the light-transmitting display area and the conventional display area can be respectively controlled, so that the brightness uniformity of the display panel can be realized, and the light-transmitting display area of the display panel can have the same display effect as the conventional display area.

Description

Display panel and display device
[ field of technology ]
The application relates to the technical field of display, in particular to a display panel and a display device.
[ background Art ]
As consumer demand increases, full screen displays are becoming the dominant display technology. The prior full-screen display is generally provided with a light transmission area in a display area, and the position of the light transmission area is used for arranging an optical device.
In order to make consumers obtain better viewing experience, subpixels are also usually arranged in the light-transmitting area for luminous display. The design of the sub-pixels in the light-transmitting area is different from that of the sub-pixels in the conventional display area, which results in a difference between the display effect in the light-transmitting area and the display effect in the conventional display area.
[ MEANS FOR SOLVING PROBLEMS ]
In view of the above, embodiments of the present application provide a display panel and a display device to solve the above problems.
In a first aspect, embodiments of the present application provide a display panel, including:
a normal display region including a plurality of first sub-pixels electrically connected to the first data lines;
a light transmissive display region, the conventional display region at least partially surrounding the light transmissive display region; the light-transmitting display area comprises a plurality of second sub-pixels, and the second sub-pixels are electrically connected with the second data lines.
In an implementation manner of the first aspect, the display panel further includes a first driving circuit and a second driving circuit; or the display panel is electrically connected with the driving chip, and the driving chip comprises a first driving circuit and a second driving circuit;
the first driving circuit comprises a plurality of first switches, the input ends of the first switches are electrically connected with a first data signal line, and the output ends of the first switches are electrically connected with the first data line;
the second driving circuit comprises a plurality of second switches, the input ends of the second switches are electrically connected with the second data signal lines, and the output ends of the second switches are electrically connected with the second data lines.
In one implementation manner of the first aspect, the first driving circuit and the second driving circuit are both test circuits.
In an implementation manner of the first aspect, in the first sub-pixel and the second sub-pixel with the same color, a control end of the first switch corresponding to the first sub-pixel and a control end of the second switch corresponding to the second sub-pixel are connected to the same control signal line.
In an implementation manner of the first aspect, in the first sub-pixel and the second sub-pixel with the same color, a control end of the first switch corresponding to the first sub-pixel and a control end of the second switch corresponding to the second sub-pixel are connected to different control signal lines.
In an implementation manner of the first aspect, the first driving circuit and the second driving circuit are respectively disposed on two opposite sides of the display panel along a first direction, where the first direction is the same as an extending direction of the first data line;
the minimum distance between the second driving circuit and the light-transmitting display area is smaller than the minimum distance between the first driving circuit and the light-transmitting display area.
In an implementation manner of the first aspect, the conventional display area further includes a first pixel circuit, the first light emitting devices are electrically connected to the first pixel circuit in a one-to-one correspondence, and the first data lines are electrically connected to the first pixel circuit;
the light-transmitting display area further comprises a second pixel circuit, at least two second light-emitting devices share the second pixel circuit, and the second data line is electrically connected with the second pixel circuit.
In one implementation manner of the first aspect, a width of the second data line is greater than a width of the first data line.
In an implementation manner of the first aspect, in a plurality of the second pixel circuits electrically connected to any one of the second data lines, colors of the second sub-pixels electrically connected to each of the second pixel circuits are the same.
In an implementation manner of the first aspect, in a plurality of the second pixel circuits electrically connected to a part of the second data lines, colors of the second sub-pixels electrically connected to at least two of the second pixel circuits are different.
In an implementation manner of the first aspect, in a first data line electrically connected to the first subpixel close to the light-transmitting display area and a second data line electrically connected to the second subpixel close to the normal display area, a color of the first subpixel electrically connected to the first data line is the same as a color of the second subpixel electrically connected to the second data line, and the first data line and the second data line are located between the first subpixel and the second subpixel.
In a second aspect, embodiments of the present application provide a display device including a display panel as provided in the first aspect.
In the embodiment of the application, different data lines are arranged for the light-transmitting display area and the conventional display area, so that the light-emitting brightness of the light-transmitting display area and the conventional display area can be respectively controlled, and the brightness uniformity of the display panel can be realized, so that the light-transmitting display area of the display panel and the conventional display area can have the same display effect.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a display panel according to an embodiment of the present application;
FIG. 2 is a partial enlarged view of the CC area of the display panel of FIG. 1;
fig. 3 is a partial enlarged view of a display panel according to an embodiment of the present application;
fig. 4 is a partial enlarged view of a display panel according to an embodiment of the present application;
FIG. 5 is a partial enlarged view of the CC area of the display panel of FIG. 1;
FIG. 6 is a schematic diagram of an electrical connection between a second sub-pixel and a second driving circuit according to an embodiment of the present disclosure;
FIG. 7 is a schematic diagram of another electrical connection between the second sub-pixel and the second driving circuit according to the embodiment of the present application;
FIG. 8 is a schematic diagram of another embodiment of a display panel;
FIG. 9 is a schematic diagram of another display panel according to an embodiment of the disclosure;
FIG. 10 is a schematic diagram of another display panel according to an embodiment of the disclosure;
FIG. 11 is a schematic diagram of a display panel according to another embodiment of the present disclosure;
fig. 12 is a schematic diagram of a display device according to an embodiment of the present application.
[ detailed description ] of the invention
For a better understanding of the technical solutions of the present application, embodiments of the present application are described in detail below with reference to the accompanying drawings.
It should be understood that the described embodiments are merely some, but not all, of the embodiments of the present application. All other embodiments, based on the embodiments herein, which would be apparent to one of ordinary skill in the art without making any inventive effort, are intended to be within the scope of the present application.
The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
In the description of the present specification, it is to be understood that the terms "substantially," "approximately," "about," "approximately," "substantially," and the like as used in the claims and examples herein refer to values that are generally agreed upon, rather than exact, within reasonable process operating ranges or tolerances.
It should be understood that although the terms first, second, third, etc. may be used in embodiments of the present application to describe sub-pixels, pixel circuits, driving circuits, etc., these square sub-pixels, pixel circuits, driving circuits, etc. should not be limited to these terms. These terms are only used to distinguish sub-pixels, pixel circuits, driving circuits, etc. from one another. For example, a first subpixel may also be referred to as a second subpixel, and similarly, a second subpixel may also be referred to as a first subpixel, without departing from the scope of embodiments of the present application.
The applicant has provided a solution to the problems existing in the prior art by intensive studies.
Fig. 1 is a schematic diagram of a display panel according to an embodiment of the present application, and fig. 2 is a partial enlarged view of a CC area in the display panel shown in fig. 1.
As shown in fig. 1, the display panel provided in the embodiment of the present application includes a conventional display area AA and a light-transmitting display area BB, and the conventional display area AA at least partially surrounds the light-transmitting display area BB. The light-transmitting display area BB is used for arranging optical functional elements, so that the conventional display area AA can perform luminous display, and the light-transmitting display area BB can realize at least one of functions such as photographing, biological feature recognition, illumination and the like in addition to the luminous display function together with the conventional display area AA.
In one implementation, the light transmissive display area BB may be completely surrounded by the conventional display area AA; in another implementation, the light transmissive display area BB may also be partially surrounded by the conventional display area AA. And, the transmittance of at least a part of the light transmission display area BB is larger than that of the conventional display area AA, so as to ensure that more optical signals can pass through the light transmission display area BB.
Note that, the light-transmitting display area BB may have a rectangular shape as shown in fig. 1, or may have other shapes such as an oval shape and a circular shape.
As shown in fig. 2, the conventional display area AA includes a plurality of first sub-pixels PX1 and a plurality of first data lines DL1, and the first sub-pixels PX1 are electrically connected with the first data lines DL 1.
The conventional display area AA may include a plurality of first pixel circuits CT1 therein, and the first pixel circuits CT1 are electrically connected to at least one first subpixel PX 1. The first subpixel PX1 may include an organic light emitting diode or a micro light emitting diode, and the first pixel circuit CT1 may provide the first subpixel PX1 with a light emitting driving current or a light emitting driving voltage required for light emission.
Specifically, the first data line DL1 is electrically connected to the first pixel circuit CT1, and is configured to provide a data voltage signal to the first pixel circuit CT 1. That is, the first subpixel PX1 is electrically connected to the first data line DL1, specifically, through the first pixel circuit CT 1.
As shown in fig. 2, the light-transmitting display area BB includes a plurality of second sub-pixels PX2 and a plurality of second data lines DL2, and the second sub-pixels PX2 are electrically connected to the second data lines DL 2.
The transmissive display area BB may include a plurality of second pixel circuits CT2, and the second pixel circuits CT2 are electrically connected to at least one second subpixel PX 2. The second subpixel PX2 may include an organic light emitting diode or a micro light emitting diode, and the second pixel circuit CT2 may provide the second subpixel PX2 with a light emitting driving current or a light emitting driving voltage required for light emission.
Specifically, the second data line DL2 is electrically connected to the second pixel circuit CT2, and is configured to provide a data voltage signal to the second pixel circuit CT2. That is, the first subpixel PX1 is electrically connected to the first data line DL1, specifically, through the first pixel circuit CT 1.
It will be appreciated that the light-transmissive display area BB is significantly different from the conventional display area AA in that the display panel has a light transmittance in the light-transmissive display area BB that is greater than the light transmittance in the conventional display area AA, where the light transmittance is the transmittance of the probe light reaching the optical functional element through at least the film layer of the display panel. Accordingly, there is a difference in the subpixel arrangement of the light-transmitting display area BB and the normal display area AA, for example, as shown in fig. 2, the density of the second subpixels PX2 in the light-transmitting display area BB is smaller than the density of the first subpixels PX1 in the normal display area AA; or the number of the second sub-pixels PX2 electrically connected at the same time by the second pixel circuit CT2 in the light-transmitting display region BB is larger than the number of the first sub-pixels PX1 electrically connected at the same time by the first pixel circuit CT1 in the normal display region AA, and so on. In the prior art, the light-emitting brightness of the light-transmitting display area BB is different from that of the conventional display area AA.
In this embodiment of the present application, by distinguishing the data line electrically connected to the second subpixel PX2 disposed in the light-transmitting display area BB from the data line electrically connected to the first subpixel PX1 disposed in the conventional display area AA, the second data line L2 may provide only the second subpixel PX2 in the light-transmitting display area BB with the required data voltage signal, and the first data line L1 may provide only the second subpixel PX1 in the light-transmitting display area AA with the required data voltage signal. The light emitting brightness of the light transmitting display area BB and the normal display area AA can be controlled respectively, so that the brightness uniformity of the display panel can be realized, and the light transmitting display area BB and the normal display area AA of the display panel can have the same display effect.
Fig. 3 is a partial enlarged view of a display panel according to an embodiment of the present application, and fig. 4 is a partial enlarged view of another display panel according to an embodiment of the present application.
In one embodiment of the present application, as shown in fig. 3 and 4, the first data line DL1 is electrically connected to the first driving circuit 11, and the first driving circuit 11 provides a data voltage signal for the first data line DL 1; the second data line DL2 is electrically connected to the second driving circuit 12, and the second driving circuit 12 supplies the data voltage signal to the second data line DL 2.
The first driving circuit 11 includes a plurality of first switches T1, an input terminal of the first switch T1 is electrically connected to the first data signal line DS1, and an output terminal of the first switch T1 is electrically connected to the first data line DL 1. When the first switch T1 is turned on, the data voltage signal on the first data signal line DS1 is transmitted to the first data line DL1 through the first switch T1, and then the first pixel circuit CT1 is controlled to generate a corresponding light-emitting driving voltage or light-emitting driving current, so that the first sub-pixel PX1 emits light.
The second driving circuit 12 includes a plurality of second switches T2, an input terminal of the second switch T2 is electrically connected to the second data signal line DS2, and an output terminal of the second switch T2 is electrically connected to the second data line DL 2. When the second switch T2 is turned on, the data voltage signal on the second data signal line DS2 is transmitted to the second data line DL2 through the second switch T2, and then the second pixel circuit CT2 is controlled to generate a corresponding light-emitting driving voltage or light-emitting driving current, so that the second sub-pixel PX2 emits light.
It should be noted that the first data signal line DS1 is used for transmitting a data voltage signal required for the first subpixel PX1 in the normal display area AA, and the second data signal line DS2 is used for transmitting a data voltage signal required for the second subpixel PX2 in the transmissive display area BB.
For example, as shown in fig. 3 and 4, in the red first subpixel PX1 and the red second subpixel PX2, an input terminal of the first switch T1 corresponding to the red first subpixel PX1 is connected to the first data signal line DS1R, and an input terminal of the first switch T2 corresponding to the red second subpixel PX2 is connected to the second data signal line DS2R. The first data signal line DS1R transmits a data voltage signal required for the red first subpixel PX1, and the second data signal line DS2R transmits a data voltage signal required for the red second subpixel PX 2.
For example, as shown in fig. 3 and 4, in the green first sub-pixel PX1 and the green second sub-pixel PX2, the input terminal of the first switch T1 corresponding to the green first sub-pixel PX1 is connected to the first data signal line DS1G, and the input terminal of the first switch T2 corresponding to the green second sub-pixel PX2 is connected to the second data signal line DS2G. The first data signal line DS1G transmits a data voltage signal required for the green first subpixel PX1, and the second data signal line DS2G transmits a data voltage signal required for the green second subpixel PX 2.
For example, as shown in fig. 3 and 4, in the blue first sub-pixel PX1 and the blue second sub-pixel PX2, an input terminal of the first switch T1 corresponding to the blue first sub-pixel PX1 is connected to the first data signal line DS1B, and an input terminal of the first switch T2 corresponding to the blue second sub-pixel PX2 is connected to the second data signal line DS2B. The first data signal line DS1B transmits a data voltage signal required for the blue first subpixel PX1, and the second data signal line DS2B transmits a data voltage signal required for the blue second subpixel PX 2.
In addition, in the present embodiment, the input terminals of the first switches T1 corresponding to the first sub-pixels PX1 of the same color are electrically connected to the same first data signal line DS1, and the input terminals of the second switches T2 corresponding to the second sub-pixels PX2 of the same color are electrically connected to the same second data signal line DS 2.
As shown in fig. 3, in the first sub-pixel PX1 and the second sub-pixel PX2 having the same color, the control terminal of the first switch T1 corresponding to the first sub-pixel PX1 and the control terminal of the second switch T2 corresponding to the second sub-pixel PX2 are connected to the same control signal line, for example, both are connected to the control signal line SW 1. That is, among the first data line DL1 and the second data line DL2 electrically connected to the first subpixel PX1 and the second subpixel PX2 of the same color, the control terminal of the first switch T1 electrically connected to the first data line DL1 and the control terminal of the second switch T2 electrically connected to the second data line DL2 are electrically connected to the same control signal line. That is, in the light-transmitting display area BB and the normal display area AA, the corresponding and second sub-pixels PX2 of the first sub-pixel PX1 controlled by the same scanning lines and of the same color may simultaneously start light emission.
For example, as shown in fig. 3, the red first subpixel PX1 is electrically connected to the first data line DL1R, the red second subpixel PX2 is electrically connected to the second data line DL2R, and the first switch T1 electrically connected to the first data line DL1R and the second switch T2 electrically connected to the second data line DL2R are electrically connected to the same control signal line SW 11. The control signal line SW11 may control the first switch T1 electrically connected to the first data line DL1R to be simultaneously turned on with the second switch T2 electrically connected to the second data line DL 2R.
For example, as shown in fig. 3, the green first subpixel PX1 is electrically connected to the first data line DL1G, the green second subpixel PX2 is electrically connected to the second data line DL2G, and the first switch T1 electrically connected to the first data line DL1G and the second switch T2 electrically connected to the second data line DL2G are electrically connected to the same control signal line SW 12. The control signal line SW12 may control the first switch T1 electrically connected to the first data line DL1G to be simultaneously turned on with the second switch T2 electrically connected to the second data line DL 2G.
For example, as shown in fig. 3, the blue first subpixel PX1 is electrically connected to the first data line DL1B, the blue second subpixel PX2 is electrically connected to the second data line DL2B, and the first switch T1 electrically connected to the first data line DL1B and the second switch T2 electrically connected to the second data line DL2B are electrically connected to the same control signal line SW 13. The control signal line SW13 may control the first switch T1 electrically connected to the first data line DL1B to be simultaneously turned on with the second switch T2 electrically connected to the second data line DL 2B.
As shown in fig. 3, among the first and second sub-pixels PX1 and PX2 having the same color, the control terminal of the first switch T1 corresponding to the first sub-pixel PX1 is connected to a different control signal line, for example, to the control signal line SW1 and the control signal line SW2, respectively, from the control terminal of the second switch T2 corresponding to the second sub-pixel PX 2. That is, among the first data line DL1 and the second data line DL2 electrically connected to the first subpixel PX1 and the second subpixel PX2 of the same color, the control terminal of the first switch T1 electrically connected to the first data line DL1 and the control terminal of the second switch T2 electrically connected to the second data line DL2 are electrically connected to different control signal lines. That is, in the light-transmitting display area BB and the normal display area AA, the corresponding and second sub-pixels PX2 of the first sub-pixel PX1 controlled by the same scanning line and of the same color may or may not simultaneously start light emission.
For example, as shown in fig. 3, the red first subpixel PX1 is electrically connected to the first data line DL1R, the red second subpixel PX2 is electrically connected to the second data line DL2R, the first switch T1 electrically connected to the first data line DL1R is electrically connected to the control signal line SW11, and the second switch T2 electrically connected to the second data line DL2R is electrically connected to the control signal line SW 21. The control signal lines SW11 and SW21 may control the switching states of the first switch T1 electrically connected to the first data line DL1R and the second switch T2 electrically connected to the second data line DL2R, respectively.
For example, as shown in fig. 3, the green first subpixel PX1 is electrically connected to the first data line DL1G, the green second subpixel PX2 is electrically connected to the second data line DL2G, the first switch T1 electrically connected to the first data line DL1G is electrically connected to the control signal line SW12, and the second switch T2 electrically connected to the second data line DL2G is electrically connected to the control signal line SW 22. The control signal lines SW12 and SW22 may control the switching states of the first switch T1 electrically connected to the first data line DL1G and the second switch T2 electrically connected to the second data line DL2G, respectively.
For example, as shown in fig. 3, the blue first subpixel PX1 is electrically connected to the first data line DL1B, the blue second subpixel PX2 is electrically connected to the second data line DL2B, the first switch T1 electrically connected to the first data line DL1B is electrically connected to the control signal line SW13, and the second switch T2 electrically connected to the second data line DL2B is electrically connected to the control signal line SW 23. The control signal line SW13 and the control signal line SW23 may control the switching states of the first switch T1 electrically connected to the first data line DL1B and the second switch T2 electrically connected to the second data line DL2B, respectively.
Fig. 5 is a partial enlarged view of the CC area of the display panel shown in fig. 1.
In one embodiment of the present application, as shown in fig. 2 and 5, the first sub-pixel PX1 located in the normal display area AA is electrically connected to the first pixel circuit CT1 in a one-to-one correspondence manner, and at least two second sub-pixels PX2 located in the transparent display area BB share the second pixel circuit CT2. The second sub-pixel PX2 shares the second pixel circuit CT2, so that the number of pixel circuits in the light-transmitting display area BB can be reduced, and the light transmittance of the light-transmitting display area BB can be improved; meanwhile, the number of the second sub-pixels PX2 in the light-transmitting display area BB can be ensured to a certain extent, and the display brightness of the light-transmitting display area BB can be ensured.
Further, as shown in fig. 1, 2 and 5, the width of the second data line DL2 is greater than the width of the first data line DL 1. Since the absolute value of the light emission driving voltage or light emission driving current required for the second sub-pixel PX2 in the light-transmitting display region BB is large relative to the light emission driving voltage or light emission driving current required for the first sub-pixel PX1 in the conventional display region AA, in the pixel driving circuit, the magnitude of the light emission driving voltage or light emission driving current is positively correlated with |vdd-vdata|, where Vdd is the power supply voltage and Vdata is the data voltage signal. Therefore, the absolute value of the data voltage signal transmitted by the second data line DL2 is smaller than that of the data voltage signal transmitted by the first data line DL1, so that the data voltage signal transmitted by the second data line DL2 is greatly affected by voltage drop, and the voltage drop of the second data line DL2 is set wider, so that the influence of the voltage drop on the data voltage signal can be reduced.
In one implementation of the present embodiment, as shown in fig. 2, the second sub-pixels PX2 and the second pixel circuits CT2 are uniformly distributed in the light-transmitting display area BB.
In another implementation manner of the present embodiment, as shown in fig. 5, the second pixel circuits CT2 are disposed in a concentrated manner, and only the second pixels PX2 may be disposed in a large area of the light-transmitting display area BB where the second pixel circuits CT2 are not disposed, so that the second data lines may not be disposed in the large area at all, thereby having an extremely high light transmittance.
In addition, assuming that the second data line DL2 and the first data line DL1 both extend along the first direction, the first data line DL1 corresponding to the first sub-pixel PX1 located at two opposite sides of the light-transmitting display area BB along the first direction may be wound outside the light-transmitting display area BB, that is, the first data line DL1 does not pass through the light-transmitting display area BB, so as to ensure that there are as few light shielding structures in the light-transmitting display area BB as possible.
Fig. 6 is a schematic diagram of an electrical connection between the second sub-pixel and the second driving circuit in the embodiment of the present application.
In one technical solution corresponding to the present embodiment, as shown in fig. 6, in the plurality of second pixel circuits CT2 electrically connected to any one of the second data lines DL2, the colors of the second sub-pixels PX2 electrically connected to each of the second pixel circuits CT2 are the same.
Fig. 7 is a schematic diagram of another electrical connection between the second sub-pixel and the second driving circuit in the embodiment of the present application.
In another technical solution corresponding to the present embodiment, among the plurality of second pixel circuits CT2 electrically connected to the portion of the second data line DL2, the colors of the second sub-pixels PX2 electrically connected to the at least two second pixel circuits CT2 are different. That is, the second pixel circuits CT electrically connected to the second sub-pixels PX2 with different partial colors share the second data line DL2, so that the number of the second data lines DL2 in the light-transmitting display area BB can be reduced, and the light transmittance of the light-transmitting display area BB can be improved.
For example, as shown in fig. 7, one red second sub-pixel PX2, one blue second sub-pixel PX2, and one green second sub-pixel PX2 constitute one pixel, the red second sub-pixel PX2 and the blue second sub-pixel PX2 in the pixel are arranged along the second direction, and the green second sub-pixel PX2 is located in the first direction of the red second sub-pixel PX2 and the blue second sub-pixel PX 2. And the second data line DL2 may extend along the first direction, the second data line DL2 may be disposed between the red second subpixel PX2 and the blue second subpixel PX2 arranged along the second direction, and both may be electrically connected with the second data line DL2, and the green second subpixel PX2 may be electrically connected with other second data lines DL 2.
Fig. 8 is a schematic diagram of another portion of a display panel according to an embodiment of the disclosure.
In an embodiment of the present application, in the first data line DL1 electrically connected to the first subpixel PX1 near the light-transmitting display area BB and the second data line DL2 electrically connected to the second subpixel PX2 near the normal display area AA, the color of the first subpixel PX1 electrically connected to the first data line DL1 is the same as the color of the second subpixel PX2 electrically connected to the second data line DL2, and the first data line DL1 and the second data line DL2 are located between the first subpixel PX1 and the second subpixel PX 2.
For example, as shown in fig. 8, in the conventional display area AA, the data line electrically connected to the first sub-pixel PX1 in a row close to the light-transmitting display area BB is connected to only the first sub-pixel PX1 in red, the data line electrically connected to the first sub-pixel PX1 in a row close to the conventional display area AA is connected to only the second sub-pixel PX2 in red, and the first data line DL1 and the second data line DL2 are located between the first sub-pixel PX1 in a row and the second sub-pixel PX2 in a row.
Because the data voltages required by the first sub-pixel PX1 and the second sub-pixel PX with the same color are relatively close, signal crosstalk can be avoided and the voltage ramp speed on the first data line DL1 and the second data line DL2 can be increased by arranging one first data line DL1 and one second data line DL2 respectively corresponding to the first sub-pixel PX and the second sub-pixel PX adjacently.
Fig. 9 is a schematic diagram of another display panel according to an embodiment of the present application.
In another embodiment of the present application, as shown in fig. 9, the display panel is electrically connected to a driving chip 01, and the driving chip 01 includes a first driving circuit 11 and a second driving circuit 12. That is, the driving chip 01, to which the first driving circuit 11 and the second driving circuit 12 are bonded, is bonded to the display panel, and the first driving circuit 11 and the second driving circuit 12 supply the data voltage signal to the display panel through the driving chip.
The driving chip 01 can be a flexible printed circuit board, and the driving chip 01 can be reversely folded to the back surface of the display panel, so that the binding area of the display panel can be reduced, and a narrow frame is realized.
In one embodiment of the present application, as shown in fig. 1 and 9, the first driving circuit 11 and the second driving circuit 12 may be disposed at the same side of the display panel. For example, as shown in fig. 1 and 9, the first driving circuit 11 and the second driving circuit 12 are each provided on the lower side of the display panel.
Fig. 10 is a schematic view of another display panel provided in an embodiment of the present application, and fig. 11 is a schematic view of another display panel provided in an embodiment of the present application.
In another embodiment of the present application, as shown in fig. 10 and 11, the first driving circuit 11 and the second driving circuit 12 are respectively disposed on two opposite sides of the display panel along a first direction, and the first direction is the same as the extending direction of the first data line. For example, as shown in fig. 10 and 11, the first driving circuit 11 and the second driving circuit 12 are respectively disposed on the upper and lower sides of the display panel.
In one implementation of the present embodiment, the minimum distance between the second driving circuit 12 and the transparent display area BB is smaller than the minimum distance between the first driving circuit 11 and the transparent display area BB. That is, the second driving circuit 12 is disposed on the side of the display panel near the light-transmitting display area BB, and the distance between the second driving circuit 12 and the second pixel circuit CT1 decreases.
In this embodiment, the second data line DL2 may be designed to be shorter, for example, may extend from the second driving circuit 12 to a side of the light-transmitting display area BB away from the second driving circuit 12. The second data line DL2 is designed to be shorter, so that the voltage drop of the second data line DL2 can be reduced, and the accuracy of the data voltage signal transmitted by the second data line DL2 is further ensured.
In one embodiment of the present application, the first driving circuit 11 and the second driving circuit 12 may be test circuits. That is, the display quality of the display panel is detected by a test signal between the packaging of the display panel, wherein the test signal includes a data voltage signal.
In the process of performing a display quality test on a display panel, the display panel needs to be aged, even if the display panel is lit for a sufficient time. Devices (e.g., transistors, light emitting devices) in the display panel are operated for a time sufficient to eliminate defects (e.g., bright and dark spots caused by uneven film layers) generated in the manufacturing process of the devices, so that the display panel reaches a stable stage. If the display panel is insufficiently aged, there is a problem in display when the display panel leaves the factory.
Since the designs of the second sub-pixel PX2 and the second pixel circuit CT2 in the transparent display area BB are different from the designs of the first sub-pixel PX1 and the first pixel circuit CT1 in the normal display area, if the same data voltages are applied to the second pixel circuit CT2 and the pixel circuit CT1 during the aging process, the second sub-pixel is insufficiently aged. This is because the number of the second sub-pixels PX2 electrically connected to the second pixel circuit CT2 in the light-transmissive display region BB is large, resulting in that the light-emission driving current does not meet the aging requirement.
According to the embodiment of the application, the appropriate data voltage can be given to the light-transmitting display area BB, the light-emitting driving circuit is guaranteed to meet the requirement, and the aging time of the light-transmitting display area BB and the aging time of the conventional display area AA are also respectively controllable. Therefore, the display quality test effect of the display panel can be optimized.
Fig. 12 is a schematic diagram of a display device according to an embodiment of the present application.
An embodiment of the present application provides a display device, as shown in fig. 12, including the display panel 0001 provided in any one of the embodiments described above. The display device provided in the embodiment of the application may be a mobile phone, and in addition, the display device provided in the embodiment of the application may also be a display device such as a computer, a television, and the like.
As shown in fig. 12, the display device provided in the embodiment of the present application further includes an optical functional element 0002, where the optical functional element 0002 is disposed at a position of the display device corresponding to the light-transmitting display area BB of the display panel 0001. The optical device is at least one of an optical fingerprint sensor, an iris recognition sensor, a camera and a flashlight.
In the display device provided by the application, the light-emitting brightness of the light-transmitting display area BB and the conventional display area AA can be respectively controlled, so that the brightness uniformity of the display panel can be realized, and the light-transmitting display area BB and the conventional display area AA of the display panel can have the same display effect.
The foregoing description of the preferred embodiments of the present invention is not intended to limit the invention to the precise form disclosed, and any modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A display panel, comprising:
a normal display region including a plurality of first sub-pixels electrically connected to the first data lines;
a light transmissive display region, the conventional display region at least partially surrounding the light transmissive display region; the light-transmitting display area comprises a plurality of second sub-pixels, and the second sub-pixels are electrically connected with the second data lines;
a first data line electrically connected to the first subpixel adjacent to the light-transmitting display area and a second data line electrically connected to the second subpixel adjacent to the normal display area, wherein the color of the first subpixel electrically connected to the first data line is the same as the color of the second subpixel electrically connected to the second data line, and the first data line and the second data line are located between the first subpixel and the second subpixel;
the display panel further comprises a first driving circuit and a second driving circuit; or,
the display panel is electrically connected with the driving chip, and the driving chip comprises a first driving circuit and a second driving circuit;
the first driving circuit comprises a plurality of first switches, the input ends of the first switches are electrically connected with a first data signal line, and the output ends of the first switches are electrically connected with the first data line;
the second driving circuit comprises a plurality of second switches, the input ends of the second switches are electrically connected with the second data signal lines, and the output ends of the second switches are electrically connected with the second data lines.
2. The display panel of claim 1, wherein the first driving circuit and the second driving circuit are test circuits.
3. The display panel according to claim 1, wherein in the first sub-pixel and the second sub-pixel having the same color, a control terminal of the first switch corresponding to the first sub-pixel and a control terminal of the second switch corresponding to the second sub-pixel are connected to the same control signal line.
4. The display panel according to claim 1, wherein among the first sub-pixel and the second sub-pixel having the same color, a control terminal of the first switch corresponding to the first sub-pixel is connected to a different control signal line from a control terminal of the second switch corresponding to the second sub-pixel.
5. The display panel according to claim 4, wherein the first driving circuit and the second driving circuit are disposed on opposite sides of the display panel along a first direction, respectively, the first direction being the same as an extending direction of the first data line;
the minimum distance between the second driving circuit and the light-transmitting display area is smaller than the minimum distance between the first driving circuit and the light-transmitting display area.
6. The display panel of claim 1, wherein the regular display area further comprises a first pixel circuit, the first light emitting device is electrically connected to the first pixel circuit in one-to-one correspondence, and the first data line is electrically connected to the first pixel circuit;
the light-transmitting display area further comprises a second pixel circuit, the second pixel circuit is shared by at least two second light-emitting devices, and the second data line is electrically connected with the second pixel circuit.
7. The display panel of claim 6, wherein the second data line has a width greater than a width of the first data line.
8. The display panel according to claim 6, wherein the color of the second sub-pixel to which each of the second pixel circuits is electrically connected is the same among the plurality of second pixel circuits to which any one of the second data lines is electrically connected.
9. The display panel according to claim 6, wherein, of the plurality of second pixel circuits to which part of the second data lines are electrically connected, colors of the second sub-pixels to which at least two of the second pixel circuits are electrically connected are different.
10. A display device comprising a display panel as claimed in any one of claims 1-9.
CN202111315802.8A 2021-11-08 2021-11-08 Display panel and display device Active CN113838413B (en)

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