CN112634809A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN112634809A CN112634809A CN202011555070.5A CN202011555070A CN112634809A CN 112634809 A CN112634809 A CN 112634809A CN 202011555070 A CN202011555070 A CN 202011555070A CN 112634809 A CN112634809 A CN 112634809A
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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
- G09G3/2007—Display of intermediate tones
- G09G3/2074—Display of intermediate tones using sub-pixels
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Abstract
The embodiment of the invention discloses a display panel and a display device, wherein the display panel comprises a first display area and a second display area which is at least partially surrounded by the first display area, the light transmittance of the second display area is higher than that of the first display area, and the first display area is provided with a plurality of regularly arranged pixel driving units; the pixel driving unit at least comprises m first pixel driving circuits for driving first sub-pixels of the first display area to emit light and n second pixel driving circuits for driving second sub-pixels of the second display area to emit light; m, n is a natural number, wherein n < m; the first pixel driving circuit is electrically connected with the first sub-pixel of the first display area, and the second pixel driving circuit is electrically connected with the second sub-pixel of the second display area through a lead. The technical scheme provided by the embodiment of the invention ensures that the second display area has higher transmittance and simultaneously drives the second sub-pixel of the second display area to display better.
Description
Technical Field
The embodiment of the invention relates to the technical field of display panels, in particular to a display panel and a display device.
Background
Along with the development of display technology and the improvement of people's standard of living, display device obtains the wide application, the comprehensive screen display of current display device becomes the trend, current display panel's vice screen region is because need set up the camera, photosensitive devices such as optical sensor and infrared sensor, need improve the regional transmittance of vice screen, how when guaranteeing that vice screen region has higher transmittance, better drive vice screen region subpixel shows and becomes the technological problem that awaits the solution in the industry urgently.
Disclosure of Invention
Embodiments of the present invention provide a display panel and a display device, so as to better drive sub-pixels in a sub-screen area to perform display while ensuring that the sub-screen area has higher transmittance.
In order to realize the technical problem, the invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides a display panel, including:
the display device comprises a first display area and a second display area which is at least partially arranged around the first display area; the light transmittance of the second display region is higher than that of the first display region;
the first display area is provided with a plurality of regularly arranged pixel driving units; the pixel driving unit at least comprises m first pixel driving circuits for driving first sub-pixels of the first display area to emit light and n second pixel driving circuits for driving second sub-pixels of the second display area to emit light; m, n is a natural number, wherein n < m;
the first pixel driving circuit is electrically connected with the first sub-pixel of the first display area, and the second pixel driving circuit is electrically connected with the second sub-pixel of the second display area through a lead.
Further, m first pixel driving circuits for driving the first sub-pixels of the first display area to emit light and n second pixel driving circuits for driving the second sub-pixels of the second display area to emit light in the single pixel driving unit are in the first direction, and the m first pixel driving circuits constitute a cooperative driving unit of the first pixels.
Further, a second pixel driving circuit of two or three adjacent pixel driving units constitutes a cooperative driving unit of the second pixel;
the first pixel comprises at least three first sub-pixels with different light-emitting colors, and the second pixel comprises at least three second sub-pixels with different light-emitting colors.
Further, the pixel driving unit further includes a first connection block and a second connection line;
the first pixel driving circuit is electrically connected with the first sub-pixel through a first connecting block;
the second pixel driving circuit is electrically connected to the second sub-pixels of the second display region through second connection lines.
Further, when the first direction is a row direction, m first pixel driving circuits for driving the first sub-pixels of the first display area to emit light and n second pixel driving circuits for driving the second sub-pixels of the second display area to emit light are in a u-th row; the second connecting line occupies the (u + 1) th row.
Furthermore, the first sub-pixel comprises a first anode, a first light emitting layer and a first cathode, wherein the first anodes of at least two first sub-pixels with the same light emitting color are sequentially cascaded and then electrically connected with a first pixel driving circuit; the second sub-pixels comprise second anodes, second light emitting layers and second cathodes, wherein the second anodes of at least two second sub-pixels with the same light emitting color are connected in series and then electrically connected with a second pixel driving circuit.
Further, the density of the first sub-pixels of the first display area is greater than that of the second sub-pixels of the second display area;
the first pixel driving circuit and the second pixel driving circuit respectively comprise at least seven thin film transistors and at least one capacitor;
the capacitance value of the second pixel driving circuit is larger than that of the first pixel driving circuit; the volume of the driving tube of the second pixel driving circuit is larger than that of the driving tube of the first pixel driving circuit.
Further, the first display area comprises a transition area and a main screen area; when the transition area is provided with a first pixel driving circuit and a second pixel driving circuit, the density of the first sub-pixels of the main screen area is greater than that of the first sub-pixels of the transition area;
the density of the first sub-pixels of the main screen area is greater than that of the second sub-pixels of the second display area.
Further, the transition zone comprises a first transition zone and a second transition zone;
the second display area is arranged between the first transition area and the second transition area;
the second display area comprises a first area adjacent to the first transition area and a second area adjacent to the second transition area,
the first pixel driving circuit in the first transition region is used for driving the second sub-pixel in the first region;
the second pixel driving circuit in the second transition region is used for driving the second sub-pixel in the second region.
Further, the density of the first sub-pixels of the transition region is the same as the density of the second sub-pixels of the second display region.
In a second aspect, an embodiment of the present invention provides a display device, including the display panel according to any one of the first aspect.
The display panel provided by the embodiment of the invention is provided with m first pixel driving circuits in the pixel driving unit which are respectively electrically connected with the first sub-pixels of the first display area, and n second pixel driving circuits which are electrically connected with the second sub-pixels of the second display area.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a cross section along the AA' direction of a display panel according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a pixel layer of a display panel along a direction parallel to a substrate according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a driving circuit layer of a display panel along a direction parallel to a substrate according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a driving circuit layer of another display panel according to an embodiment of the present invention along a direction parallel to a substrate;
FIG. 6 is a schematic structural diagram of a pixel layer of another display panel according to an embodiment of the invention along a direction parallel to a substrate;
FIG. 7 is a schematic structural diagram of a driving circuit layer of a display panel according to another embodiment of the present invention along a direction parallel to a substrate;
FIG. 8 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a second pixel driving circuit of a display panel according to an embodiment of the invention;
FIG. 10 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 11 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 12 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 13 is a schematic structural diagram of a pixel layer of a display panel according to another embodiment of the invention along a direction parallel to a substrate;
FIG. 14 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 15 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
As mentioned in the background art, the sub-screen region of the conventional display panel needs to have higher transmittance, but the pixel driving circuit has more opaque layers such as metal, so that the pixel driving circuit affects the transmittance of the sub-screen region. And the luminance of the sub-pixels in the sub-screen area is higher than that of the sub-pixels in the main screen area, the sub-pixels need to be driven by a driving circuit with stronger driving capability, and the required pixel driving circuit is larger in size, so that how to better drive the sub-pixels in the sub-screen area to display while ensuring that the sub-screen area has higher transmittance is the technical problem of the technical difficulty of the technical staff in the field.
Based on the above technical problem, the present embodiment proposes the following solutions:
fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention. Fig. 2 is a schematic diagram of a cross section along the AA' direction of a display panel according to an embodiment of the present invention. With reference to fig. 1 and 2, an embodiment of the present invention provides a display panel including a first display area 1 and a second display area 2 at least partially surrounding the first display area 1; the light transmittance of the second display region 2 is higher than that of the first display region 1; the first display area 1 is provided with a plurality of regularly arranged pixel driving units 5; the pixel driving unit 5 includes at least m first pixel driving circuits 41 for driving the first sub-pixels 31 of the first display region 1 to emit light and n second pixel driving circuits 42 for driving the second sub-pixels 32 of the second display region 2 to emit light; m, n is a natural number, wherein n < m; the first pixel driving circuit 41 is electrically connected to the first sub-pixel 31 of the first display region 1, and the second pixel driving circuit 42 is electrically connected to the second sub-pixel 32 of the second display region 2 through a conductive line.
Specifically, the first display area 1 may be a main screen area or a transition area, the second display area 2 may be a transparent area, and the second sub-pixels 32 of the second display area 2 are electrically connected to the second pixel driving circuit 42 disposed in the first display area 1 through wires and driven by the second pixel driving circuit 42, so that the second display area 2 has high transmittance, and is convenient for setting optical sensors, cameras and other optical sensing devices which have high transmittance requirements.
Referring to fig. 2, the display panel may include a substrate 101, a driving circuit layer 201 disposed on a side of the substrate 101, a pixel layer 301 disposed on a side of the driving circuit layer 201 away from the substrate 101, and a cover plate layer 401 disposed on a side of the pixel layer 301 away from the substrate 101. Fig. 3 is a schematic structural diagram of a pixel layer of a display panel along a direction parallel to a substrate according to an embodiment of the present invention. Fig. 4 is a schematic structural diagram of a driving circuit layer of a display panel along a direction parallel to a substrate according to an embodiment of the present invention. With reference to fig. 1 to 4, the number n of the second pixel driving circuits 42 is smaller than the number m of the first pixel driving circuits, that is, the number of the second pixel driving circuits 42 disposed in the pixel driving unit 5 is smaller, so that the space in each pixel driving unit 5 is large enough to design the first pixel driving circuit 41 and the second pixel driving circuit 42 to be large enough, so that the first pixel driving circuit 41 and the second pixel driving circuit 42 have large enough driving capability, so that the second display area 2 has a good display effect, and the second sub-pixels 32 of the second display area 2 are driven to display well while the second display area 2 has high transmittance.
The display panel provided by this embodiment is configured such that m first pixel driving circuits in the pixel driving units are respectively electrically connected to the first sub-pixels of the first display area, and n second pixel driving circuits are electrically connected to the second sub-pixels of the second display area, because the number of the second pixel driving circuits provided in each pixel driving unit is small, the space in each pixel driving unit is large enough, the first pixel driving circuit and the second pixel driving circuit can be designed to be large enough, so that the first pixel driving circuit and the second pixel driving circuit have large enough driving capability, so that the second display area has a good display effect, and the second sub-pixels of the second display area are better driven to display while the second display area has high transmittance.
It should be noted that, this embodiment only exemplarily shows the arrangement of the first sub-pixel and the second sub-pixel, and the invention is not limited thereto, and in other embodiments, the arrangement of the first sub-pixel and the second sub-pixel may be RGB arrangement, RGBG arrangement, pentile arrangement (diamond arrangement), RGBW arrangement, RGB Delta arrangement, RGB S-Strip arrangement, and other arrangements.
Optionally, fig. 5 is a schematic structural diagram of a driving circuit layer of another display panel provided in an embodiment of the present invention, along a direction parallel to a substrate. Fig. 6 is a schematic structural diagram of a pixel layer of another display panel according to an embodiment of the invention, the pixel layer being parallel to a substrate. On the basis of the above-described embodiment, with reference to fig. 5 and 6, M first pixel driving circuits 41 for driving the first sub-pixels 31 of the first display area 1 to emit light and n second pixel driving circuits 42 for driving the second sub-pixels 32 of the second display area 2 to emit light in the single pixel driving unit 5 are in the first direction M, and the M first pixel driving circuits 41 constitute a cooperative driving unit of the first pixels 33. The first pixel 33 includes at least three first sub-pixels 31 with different light emission colors.
Alternatively, the second pixel driving circuits 42 in two or three adjacent pixel driving units 5 constitute a cooperative driving unit of the second pixel 34; the second pixel 34 includes at least three second sub-pixels 32 of different emission colors.
Specifically, M first pixel driving circuits 41 for driving the first sub-pixels 31 of the first display area 1 to emit light and n second pixel driving circuits 42 for driving the second sub-pixels of the second display area 2 to emit light in the single pixel driving unit 5 are located in the first direction M, so that a sufficient space can be reserved for a wire electrically connecting the second pixel driving circuits 42 and the second sub-pixels 32, and the arrangement of wiring is facilitated.
The m first pixel driving circuits 41 constitute a cooperative driving unit of the first pixel 33, the first pixel 33 includes at least three light emitting units of different light emitting colors, and the first pixel 33 includes, for example, a red sub-pixel, a green sub-pixel, and a blue sub-pixel. The m first pixel driving circuits 41 include a driving circuit that drives the red sub-pixel, a driving circuit that drives the green sub-pixel, and a driving circuit that drives the blue sub-pixel. The m first pixel driving circuits 41 may drive one first pixel 33, or may drive two or more second pixels 33, that is, two or more first sub-pixels of the same emission color share one first pixel driving circuit, so that one pixel driving unit 5 corresponds to a plurality of first pixels 33, one pixel driving unit 5 may have a larger space for arranging the pixel driving circuits, and the first pixel driving circuit 41 and the second pixel driving circuit 42 may have larger volumes to improve driving capability and display effect of the display panel.
Illustratively, m first pixel driving circuits 41 may drive four first pixels 33, and one first pixel driving circuit 41 is electrically connected to the first sub-pixels 31 of the same color included in its corresponding four first pixels 33.
Alternatively, the second pixel drive circuits 42 of two or three adjacent pixel drive units 5 constitute a cooperative drive unit for the second pixels 34, i.e. the second pixel drive circuits 42 in two or three pixel drive units 5 drive the second pixels 34 in common, so that the number of the second pixel drive circuits 42 in the single pixel drive unit 5 can be set small, the first pixel drive circuit 41 and the second pixel drive circuit 42 in the single pixel drive unit 5 have a sufficient design space, the first pixel driving circuit 41 and the second pixel driving circuit 42 may be designed to be large, so that the first pixel driving circuit 41 and the second pixel driving circuit 42 have a sufficiently large driving capability, when the second display area 2 has a good display effect, the arrangement of the wires is simpler, and the space occupied by the wires is further reduced.
In addition, one cooperative driving unit formed by the second pixel driving circuits 42 in two or three adjacent pixel driving units 5 may drive one second pixel 34, or may drive two or more second pixels 34, that is, one second pixel driving circuit in one cooperative driving unit may drive one second sub-pixel, or may drive the second sub-pixels of the same color in two or more second pixels 34.
Optionally, fig. 7 is a schematic structural diagram of a driving circuit layer of another display panel provided in an embodiment of the present invention along a direction parallel to a substrate. On the basis of the above-described embodiment, with reference to fig. 6 and 7, the pixel driving unit 5 further includes a first connection block and a second connection line 9, the first pixel driving circuit 41 is electrically connected to the first sub-pixel 31 through the first connection block, and the second pixel driving circuit 42 is electrically connected to the second sub-pixel 32 of the second display area 2 through the second connection line 9.
Specifically, the first connection block may be a metal layer, and since the vertical projection of the first sub-pixel 31 on the driving circuit layer may not coincide with the corresponding first pixel driving circuit 41, the first connection block may be disposed to realize the bridge connection between the first sub-pixel 31 and the first pixel driving circuit 41. The second pixel driving circuit 42 is electrically connected to the second sub-pixel 32 of the second display area 2 through the second connection line 9, so as to output the driving signal of the second pixel driving circuit 42 to the second sub-pixel 32 through the second connection line 9, so as to drive the second sub-pixel 32 to emit light, thereby facilitating the wiring of the driving circuit layer. Note that fig. 7 does not show the first connection block.
Alternatively, with continued reference to fig. 6 and 7, when the first direction M is a row direction, M first pixel driving circuits 41 for driving the first sub-pixels 31 of the first display area 1 to emit light and n second pixel driving circuits 42 for driving the second sub-pixels 32 of the second display area 2 to emit light are in the u-th row; the second connection line 9 occupies the u +1 th row.
Specifically, this arrangement can provide a larger space for the second connection lines 9, the second connection lines 9 occupy the u +1 th row and extend from the first display area 1 to the second display area 2, and the second pixel driving circuit 42 is electrically connected to the second sub-pixels 32 of the second display area 2 through the second connection lines 9, so as to avoid mutual interference between the second connection lines 9.
Optionally, fig. 8 is a schematic structural diagram of another display panel provided in the embodiment of the present invention. On the basis of the above embodiment, referring to fig. 8, the first sub-pixel 31 includes a first anode 311, a first light emitting layer 312 and a first cathode 313, wherein the first anodes of at least two first sub-pixels 31 with the same light emitting color are electrically connected to one first pixel driving circuit 41 after being cascaded in sequence; the second sub-pixel 32 includes a second anode 321, a second light emitting layer 322 and a second cathode 323, wherein the second anodes of at least two second sub-pixels 32 with the same light emitting color are sequentially connected in series and then electrically connected to a second pixel driving circuit 42.
Specifically, the first anodes of at least two first sub-pixels 31 with the same light emitting color are sequentially cascaded and then electrically connected to one first pixel driving circuit 41, so that the at least two first pixels 33 can be driven by one group of first pixel driving circuits 41 in one pixel driving unit 5, the number of the first pixel driving circuits 41 in the pixel driving unit 5 is reduced, a larger space can be reserved for the second pixel driving circuit 42 in the pixel driving unit 5, the second pixel driving circuit 42 can be designed to be larger, and the second pixel driving circuit 42 has a sufficiently large driving capability, so that the second display area 2 has a better display effect.
The second anodes of at least two second sub-pixels 32 with the same light emitting color are sequentially cascaded and then electrically connected with one second pixel driving circuit 42, so that the arrangement can drive at least two second pixels 34 in a cooperative driving unit formed by a group of second pixel driving circuits 42, the number of the second pixel driving circuits 42 for driving the second sub-pixels 32 in the first display area 1 is reduced, enough space can be provided for making the first pixel driving circuit 41 and the second pixel driving circuits 42 large enough, the driving capability of the first pixel driving circuit 41 and the second pixel driving circuits 42 is further improved, and the second display area 2 has a better display effect.
Optionally, fig. 9 is a schematic structural diagram of a second pixel driving circuit of a display panel according to an embodiment of the present invention. On the basis of the above embodiments, with reference to fig. 6 to 9, the density of the first sub-pixels 31 of the first display area 1 is greater than the density of the second sub-pixels 32 of the second display area 2; the first pixel driving circuit 41 and the second pixel driving circuit 42 each include at least seven thin film transistors and at least one capacitor; the capacitance value of the second pixel driving circuit 42 is greater than that of the first pixel driving circuit 41; the volume of the driving tube of the second pixel driving circuit 42 is larger than that of the driving tube of the first pixel driving circuit 41.
Specifically, fig. 9 exemplarily shows that the second pixel driving circuit includes seven thin film transistors (T1, T2, T3, T4, T5, T6, and T7) and a storage capacitor Cst, and the T3 is a driving transistor. Because the density of the first sub-pixel 31 in the first display region 1 is greater than the density of the second sub-pixel 32 in the second display region 2, and the luminance of the second sub-pixel 32 is higher when the same gray scale is input in the sub-pixels of the same color, and the driving capability required by the second pixel driving circuit 42 is greater, the volume of the driving transistor T3 required by the second pixel driving circuit 42 is greater, and the volume of the required storage capacitor Cst is also greater, the arrangement of the first pixel driving circuit 41 and the second pixel driving circuit 42 in this embodiment can satisfy the requirements of the driving transistor T3 and the storage capacitor Cst with larger volumes, and can improve the pixel driving capability of the pixel driving circuit.
Optionally, fig. 10 is a schematic structural diagram of another display panel provided in the embodiment of the present invention. Fig. 11 is a schematic structural diagram of another display panel according to an embodiment of the present invention. On the basis of the above-described embodiment, in conjunction with fig. 10 and 11, the first display area 1 may include a transition area 12 and a main screen area 11; when the transition region 12 is provided with the first pixel driving circuit 41 and the second pixel driving circuit 42, the density of the first sub-pixels 31 of the main screen region 11 is greater than the density of the first sub-pixels 31 of the transition region 12; the density of the first sub-pixels 31 of the main screen area 11 is greater than the density of the second sub-pixels 32 of the second display area 2.
Specifically, the arrangement is such that the transition region 12 has a lower pixel density, the first pixels 33 of the transition region 12 are driven by the first pixel driving circuits 41 arranged in the transition region 12, the number of the first pixels 33 of the transition region 12 is smaller than that of the main screen region 11, and the number of the first pixel driving circuits 41 arranged in the transition region 12 is smaller, so that the transition region 12 has enough space for arranging the second pixel driving circuits 42 for driving the second pixels 34 of the second display region 2. In addition, the arrangement is such that the first pixel driving circuit 41 and the second pixel driving circuit 42 in the transition region 12 have a sufficient design space, and the first pixel driving circuit 41 and the second pixel driving circuit 42 may also be designed to be large, so that the first pixel driving circuit 41 and the second pixel driving circuit 42 have a sufficient driving capability, so that the transition region 12 and the second display region 2 have a good display effect.
Optionally, fig. 12 is a schematic structural diagram of another display panel provided in the embodiment of the present invention. On the basis of the above embodiment, with reference to fig. 12, the transition zone 12 comprises a first transition zone 121 and a second transition zone 122; the second display area 2 is disposed between the first transition area 121 and the second transition area 122; the second display region 2 includes a first region 221 adjacent to the first transition region 121 and a second region 222 adjacent to the second transition region 122, the first pixel driving circuit 41 in the first transition region 121 is configured to drive the second sub-pixel 32 in the first region; the second pixel driving circuit 42 in the second transition region 122 is used to drive the second sub-pixel 32 in the second region.
Specifically, such a configuration can reduce the number of second connection lines 9 in the u +1 th row in the first transition region 121 and the second transition region 122, reduce the space occupied by the second connection lines 9 in the u +1 th row of the transition region 12, and further increase the space in which the first pixel driving circuit 41 and the second pixel driving circuit 42 can be configured in the pixel driving unit 5, compared with a configuration in which only one transition region 12 is provided.
Optionally, fig. 13 is a schematic structural diagram of a pixel layer of another display panel provided in an embodiment of the present invention, the pixel layer being along a direction parallel to a substrate. On the basis of the above embodiment, referring to fig. 13, the density of the first sub-pixels 31 of the transition area 12 is the same as the density of the second sub-pixels 32 of the second display area 2.
Specifically, the density of the sub-pixels in the transition region 12 is the same as that of the sub-pixels in the second display region 2, and the arrangement of the pixels in the transition region 12 may be the same as that of the pixels in the second display region 2, so that the sub-pixels in the transition region 12 and the sub-pixels in the second display region 2 may be prepared in the same process, thereby reducing the process cost.
Alternatively, on the basis of the above-mentioned embodiment, with continuing reference to fig. 12 and 13, each pixel driving unit 5 may include two second pixel driving circuits 42, and the second pixel driving circuits 42 in every adjacent three pixel driving units 5 may drive eight second pixels 34 in two second pixel regions 6 of the second display area 2 along the first direction M, so that the arrangement of the second connection lines 9 is simpler, and the space occupied by the second connection lines 9 is further reduced.
Optionally, fig. 14 is a schematic structural diagram of another display panel provided in the embodiment of the present invention. On the basis of the above-mentioned embodiment, in combination with fig. 13 and 14, it may be arranged that each pixel driving unit 5 includes one second pixel driving circuit 42, and along the first direction M, the second pixel driving circuits 42 in every adjacent three pixel driving units 5 may drive the second sub-pixels 32 in the four second pixels 34 in one second pixel region 6 of the second display area 2, so that the second connection lines 9 are arranged more simply, occupy less space, and further reduces the number of second pixel drive circuits 42 within the pixel drive unit 5, increases the space within a single pixel drive unit 5 to a greater extent, the first pixel drive circuit 41 and the second pixel drive circuit 42 may be further designed to be larger, the first pixel driving circuit 41 and the second pixel driving circuit 42 are made to have a sufficiently large driving capability, further improving the display effect of the second display region 2.
Optionally, fig. 15 is a schematic structural diagram of a display device according to an embodiment of the present invention. On the basis of the foregoing embodiments, referring to fig. 15, a display device 200 according to an embodiment of the present invention includes the display panel 100 according to any of the foregoing embodiments, and includes the beneficial effects of the display panel according to any of the foregoing embodiments, which are not described herein again.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A display panel, comprising:
the display device comprises a first display area and a second display area which is at least partially arranged around the first display area; the light transmittance of the second display region is higher than that of the first display region;
the first display area is provided with a plurality of regularly arranged pixel driving units; the pixel driving unit at least comprises m first pixel driving circuits for driving first sub-pixels of the first display area to emit light and n second pixel driving circuits for driving second sub-pixels of the second display area to emit light; m, n is a natural number, wherein n < m;
the first pixel driving circuit is electrically connected with the first sub-pixel of the first display area, and the second pixel driving circuit is electrically connected with the second sub-pixel of the second display area through a lead.
2. The display panel according to claim 1, characterized in that:
m first pixel driving circuits for driving the first sub-pixels of the first display area to emit light and n second pixel driving circuits for driving the second sub-pixels of the second display area to emit light in a first direction in a single pixel driving unit, and the m first pixel driving circuits constitute a cooperative driving unit of a first pixel;
preferably, the second pixel driving circuit in two or three adjacent pixel driving units constitutes a cooperative driving unit of a second pixel;
wherein the first pixel includes the first sub-pixels of at least three different emission colors, and the second pixel includes the second sub-pixels of at least three different emission colors.
3. The display panel according to claim 2, characterized in that:
the pixel driving unit further includes a first connection block and a second connection line;
the first pixel driving circuit is electrically connected with the first sub-pixel through the first connecting block;
the second pixel driving circuit is electrically connected with the second sub-pixel of the second display area through the second connecting line.
4. The display panel according to claim 3, wherein:
when the first direction is a row direction, m first pixel driving circuits for driving the first sub-pixels of the first display area to emit light and n second pixel driving circuits for driving the second sub-pixels of the second display area to emit light are in a u-th row; the second connecting line occupies the (u + 1) th row.
5. The display panel according to claim 1, characterized in that:
the first sub-pixel comprises a first anode, a first light-emitting layer and a first cathode, wherein the first anodes of at least two first sub-pixels with the same light-emitting color are sequentially cascaded and then are electrically connected with one first pixel driving circuit; the second sub-pixel comprises a second anode, a second light emitting layer and a second cathode, wherein the second anodes of at least two second sub-pixels with the same light emitting color are connected in series and then electrically connected with one second pixel driving circuit.
6. The display panel according to claim 1, characterized in that:
the density of the first sub-pixels of the first display area is greater than the density of the second sub-pixels of the second display area;
the first pixel driving circuit and the second pixel driving circuit each include at least seven thin film transistors and at least one capacitor;
the capacitance value of the second pixel driving circuit is larger than that of the first pixel driving circuit; the volume of the driving tube of the second pixel driving circuit is larger than that of the driving tube of the first pixel driving circuit.
7. The display panel according to claim 1, characterized in that:
the first display area comprises a transition area and a main screen area; when the transition region is provided with the first pixel driving circuit and the second pixel driving circuit, the density of the first sub-pixels of the main screen region is greater than that of the first sub-pixels of the transition region;
the density of the first sub-pixels of the main screen area is greater than that of the second sub-pixels of the second display area.
8. The display panel according to claim 7, wherein:
the transition zone comprises a first transition zone and a second transition zone;
the second display area is arranged between the first transition area and the second transition area;
the second display region includes a first region adjacent to the first transition region and a second region adjacent to the second transition region,
the first pixel driving circuit in the first transition region is used for driving the second sub-pixel in the first region;
the second pixel driving circuit in the second transition region is used for driving the second sub-pixel in the second region.
9. The display panel according to claim 7,
the density of the first sub-pixels of the transition region is the same as the density of the second sub-pixels of the second display region.
10. A display device comprising the display panel according to any one of claims 1 to 9.
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