CN115273716A - Display panel and display device - Google Patents

Abstract

The disclosure relates to the technical field of display, and provides a display panel and a display device. The display panel includes a first display area, a second display area, a plurality of first light emitting units located in the first display area, a plurality of first pixel driving circuits located in the second display area, the first pixel driving circuits are used for providing driving current for the first light emitting units, the plurality of first light emitting units include light emitting units of a plurality of colors, and the display panel further includes: the transparent conductive layer of multilayer that is located substrate one side. The light-emitting units of each color correspond to one transparent conductive layer, the light-emitting units of the same color are connected with the corresponding first pixel driving circuits through the transparent conductive wires positioned on the same transparent conductive layer, and the light-emitting units of different colors are connected with the corresponding first pixel driving circuits through the transparent conductive wires positioned on different transparent conductive layers. The first display area in the display panel has a good display effect.

Description

Display panel and display device

Technical Field

The disclosure relates to the technical field of display, in particular to a display panel and a display device.

Background

The technology of the camera under the screen is that a light transmission area is arranged on a display panel, and the camera and the light transmission area are arranged just right at the same time, so that full screen display is realized. In the related art, the light emitting cells are generally disposed only in the light transmissive region, and the driving current is supplied to the light emitting cells located in the light transmissive region by the pixel driving circuit located outside the light transmissive region. In the related art, the light emitting units located in different regions of the light transmissive region need to be connected to the pixel driving circuit located outside the light transmissive region through the transparent conductive lines located in different levels.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

BRIEF SUMMARY OF THE PRESENT DISCLOSURE

According to an aspect of the present disclosure, a display panel is provided, which includes a first display region, a second display region surrounding at least a portion of an edge of the first display region, a plurality of first light emitting units located in the first display region, and a plurality of first pixel driving circuits located in the second display region, the first pixel driving circuits being configured to supply a driving current to the first light emitting units, the plurality of first light emitting units including light emitting units of a plurality of colors. The display panel further includes: the transparent conductive layer of multilayer is located one side of substrate base plate. The light-emitting units of each color correspond to one transparent conductive layer, the light-emitting units of the same color are connected with the corresponding first pixel driving circuits through the transparent conductive wires positioned on the same transparent conductive layer, and the light-emitting units of different colors are connected with the corresponding first pixel driving circuits through the transparent conductive wires positioned on different transparent conductive layers.

In an exemplary embodiment of the present disclosure, a plurality of the first light emitting units includes: a first R light emitting unit, a first G light emitting unit, a first B light emitting unit, the plurality of transparent conductive layers including: the first transparent conducting layer is positioned on one side of the substrate and comprises a first transparent conducting wire, and the first transparent conducting wire is used for connecting the first G light-emitting unit and a corresponding first pixel driving circuit; the second transparent conducting layer is positioned on one side of the substrate and comprises a second transparent conducting wire, and the second transparent conducting wire is used for connecting the first R light-emitting unit and a corresponding first pixel driving circuit; the third transparent conducting layer is located on one side of the substrate base plate and comprises a third transparent conducting wire, and the third transparent conducting wire is used for connecting the first B light-emitting unit and a corresponding first pixel driving circuit.

In an exemplary embodiment of the present disclosure, the display panel further includes a plurality of pixel units in the first display region, the pixel units including the first G light emitting unit, the first R light emitting unit, and the first B light emitting unit; in a plurality of transparent conductive lines connected with the same pixel unit, the parasitic capacitance of the first transparent conductive line is smaller than that of the second transparent conductive line, and the parasitic capacitance of the second transparent conductive line is smaller than that of the third transparent conductive line.

In one exemplary embodiment of the present disclosure, the display panel further includes a plurality of pixel units in the first display region, the pixel units including the first G light emitting unit, the first R light emitting unit, and the first B light emitting unit; and in a plurality of transparent conductive lines connected with the same pixel unit, the length of the first transparent conductive line is smaller than that of the second transparent conductive line, and the length of the second transparent conductive line is smaller than that of the third transparent conductive line.

In an exemplary embodiment of the present disclosure, the second display region is located on one side of the first display region in a row direction X, the first pixel driving circuit is configured to provide a driving current to the first light emitting unit located in the same pixel circuit row, and an orthographic projection of the first transparent conductive line on the substrate, an orthographic projection of the second transparent conductive line on the substrate, and an orthographic projection of the third transparent conductive line on the substrate all extend along the row direction; the first pixel driving circuit comprises a plurality of first sub-pixel driving circuits, a plurality of second sub-pixel driving circuits and a plurality of third sub-pixel driving circuits, wherein the first sub-pixel driving circuits are used for providing driving current for the first G light-emitting unit through the first transparent conducting wire, the second sub-pixel driving circuits are used for providing driving current for the first R light-emitting unit through the second transparent conducting wire, and the third sub-pixel driving circuits are used for providing driving current for the first B light-emitting unit through the third transparent conducting wire; in the row direction, the orthographic projection of any second sub-pixel driving circuit on the substrate base plate is positioned on one side, far away from the first display area, of any first sub-pixel driving circuit on the substrate base plate, and the orthographic projection of any third sub-pixel driving circuit on the substrate base plate is positioned on one side, far away from the first display area, of the second sub-pixel driving circuit on the substrate base plate.

In one exemplary embodiment of the present disclosure, the plurality of first G light emitting units includes n1 columns of first G light emitting units, wherein the m +1 th column of first G light emitting units is located at a side of the m-th column of first G light emitting units away from the second display region; the plurality of first sub-pixel driving circuits comprise n1 columns of first sub-pixel driving circuits, wherein the m +1 column of first sub-pixel driving circuits are positioned on one side, away from the first display area, of the m column of first sub-pixel driving circuits; the first sub-pixel driving circuit of the Xth column is used for providing a driving current for the first G light-emitting unit of the Xth column; the plurality of first R light-emitting units comprise n2 columns of first R light-emitting units, wherein the m +1 column of first R light-emitting units are positioned on one side, away from the second display area, of the m column of first R light-emitting units; the plurality of second sub-pixel driving circuits comprise n2 columns of second sub-pixel driving circuits, wherein the m +1 column of second sub-pixel driving circuits is positioned on one side, away from the first display area, of the m column of second sub-pixel driving circuits; the second sub-pixel driving circuit of the X column is used for providing a driving current for the first R light-emitting unit of the X column; the plurality of first B light-emitting units comprise n2 columns of first B light-emitting units, wherein the m +1 column of first B light-emitting units are positioned on one side, away from the second display area, of the m column of first B light-emitting units; the plurality of third sub-pixel driving circuits comprise n2 columns of third sub-pixel driving circuits, wherein the m +1 column of third sub-pixel driving circuits is positioned on one side of the m column of third sub-pixel driving circuits, which is far away from the first display area; the second sub-pixel driving circuit is used for providing a driving current for the second B light-emitting unit in the second column; wherein m and X are positive integers more than or equal to1, and n1, n2 and n3 are positive integers more than or equal to 2.

In an exemplary embodiment of the present disclosure, the orthographic projection of the first transparent conductive line on the substrate base plate is located on the orthographic projection of the same pixel driving circuit row on the substrate base plate; the second transparent conductive line is positioned on the orthographic projection of the same pixel driving circuit row on the substrate base plate in the orthographic projection of the substrate base plate; the orthographic projection of the third transparent conductive wire on the substrate base plate is positioned on the orthographic projection of the same pixel driving circuit row on the substrate base plate.

In one exemplary embodiment of the present disclosure, in the same pixel driving circuit row, the first transparent conductive line and the third transparent conductive line are both formed in a first region, the second transparent conductive line is formed in a second region, and the first region and the second region do not intersect.

In an exemplary embodiment of the present disclosure, the display panel includes a first light emitting cell row and a second light emitting cell row in the first display region, the first light emitting cell row and the second light emitting cell row being alternately arranged in sequence in a column direction; in the first light emitting unit row, the first R light emitting units, the first G light emitting units and the first B light emitting units are sequentially and alternately distributed in the row direction, and in the same first light emitting unit row, two first G light emitting units distributed in the column direction are arranged between the first R light emitting unit and the first B light emitting unit; in the second light emitting unit row, the first R light emitting units and the first B light emitting units are alternately arranged in sequence in the row direction;

in adjacent light-emitting unit rows, the light-emitting units of the same color are located in different columns, and in two light-emitting unit rows spaced apart from one another by the light-emitting unit rows, the light-emitting units of the same color are located in the same column.

In an exemplary embodiment of the present disclosure, in the first display region, the first R light emitting unit, the first G light emitting unit, and the first B light emitting unit are sequentially and alternately distributed in a column direction, the light emitting units of the same color are located in the same row, the light emitting units of different colors are located in different rows, in adjacent light emitting unit columns, the light emitting units of the same color are located in different rows, and in two light emitting unit columns spaced apart by one light emitting unit column, the light emitting units of the same color are located in the same row.

In an exemplary embodiment of the present disclosure, the display panel further includes a second R light emitting unit, a second G light emitting unit, and a second B light emitting unit located in the second display region; in the second display area, the second R light-emitting units, the second G light-emitting units, and the second B light-emitting units are alternately distributed in sequence along the same light-emitting unit row, and in the same light-emitting unit row, two second G light-emitting units distributed in the column direction are disposed between the second R light-emitting unit and the second B light-emitting unit, in adjacent light-emitting unit rows, the light-emitting units of the same color are not located in the same column, and in two light-emitting unit rows of the spaced light-emitting unit row, the light-emitting units of the same color are located in the same column.

In one exemplary embodiment of the present disclosure, the display panel further includes a second R light emitting unit, a second G light emitting unit, and a second B light emitting unit in the second display region; the arrangement mode of the light emitting units in the second display area is the same as that of the light emitting units in the first display area.

In an exemplary embodiment of the present disclosure, the second transparent conductive layer is located on a side of the first transparent conductive layer facing away from the substrate, and the third transparent conductive layer is located on a side of the second transparent conductive layer facing away from the substrate.

In an exemplary embodiment of the present disclosure, the display panel further includes a virtual pixel area and a virtual sub-pixel driving unit located in a partial area of the virtual pixel area, and the virtual pixel area is located on a side of the second display area away from the first display area.

In an exemplary embodiment of the present disclosure, the display panel further includes a first data line in the second display region, the first data line for supplying a data signal to the first pixel driving circuit; the display panel further comprises a third display area, a third pixel driving circuit and a third data line, wherein the third pixel driving circuit and the third data line are positioned in the third display area, the third display area is positioned on one side of the first display area in the column direction, and the third data line is used for providing data signals for the third pixel driving circuit; the display panel further comprises a connecting line, the connecting line is connected between the first data line and the third data line, and at least part of the connecting line is located in the virtual pixel area.

In an exemplary embodiment of the present disclosure, the number of columns of the pixel driving circuits in the second display area is greater than the number of columns of the light emitting units in the second display area.

In one exemplary embodiment of the present disclosure, the density of the light emitting cells in the first display region is equal to the density of the light emitting cells in the second display region; and the orthographic projection of the first R light-emitting unit on the substrate base plate is smaller than the orthographic projection of the second R light-emitting unit on the substrate base plate, the orthographic projection of the first G light-emitting unit on the substrate base plate is smaller than the orthographic projection of the second G light-emitting unit on the substrate base plate, and the orthographic projection of the first B light-emitting unit on the substrate base plate is smaller than the orthographic projection of the second B light-emitting unit on the substrate base plate.

According to an aspect of the present disclosure, there is provided a display apparatus including the display panel described above and a sensor device facing the first display region of the display panel.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

FIG. 1 is a schematic diagram of a display panel according to the related art;

FIG. 2 is a schematic diagram of an exemplary embodiment of a display panel according to the present disclosure;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a schematic structural diagram of another exemplary embodiment of a display panel of the present disclosure;

FIG. 5 is a schematic diagram of a first display area in another exemplary embodiment of a display panel according to the present disclosure;

fig. 6 is a schematic structural diagram of another exemplary embodiment of a display panel according to the present disclosure.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". Other relative terms, such as "high," "low," "top," "bottom," "left," "right," and the like are also intended to have similar meanings. When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.

The terms "a," "an," "the," and the like are used to denote the presence of one or more elements/components/parts; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.

Fig. 1 is a schematic structural diagram of a display panel in the related art. The display panel may include a light-transmitting area A1 and a normal display area A2, only the light emitting unit is disposed in the light-transmitting area A1, and a pixel driving circuit for driving the light emitting unit in the light-transmitting area A1 is disposed in the normal display area A2. As shown in fig. 1, in the related art, the light-transmitting area A1 may include four areas A, B, C, D, and the display panel may further include a first transparent conductive layer, a second transparent conductive layer, and a third transparent conductive layer, where the first transparent conductive layer, the second transparent conductive layer, and the third transparent conductive layer may be sequentially stacked from a substrate of the display panel toward a light-emitting layer. As shown in fig. 1, the first transparent conductive layer may include a plurality of transparent conductive lines ITO1, the second transparent conductive layer may include a plurality of transparent conductive lines ITO2, and the third transparent conductive layer may include a plurality of transparent conductive lines ITO3. The light emitting units in the area A are connected with a pixel driving circuit in a normal display area A2 through a part of transparent wires ITO 1; the light-emitting units in the area B are connected with a pixel driving circuit in the normal display area A2 through a part of transparent wires ITO 3; the light-emitting units in the area C are connected with a pixel driving circuit in a normal display area A2 through a part of transparent wires ITO 1; the light emitting units in the region D are connected to the pixel driving circuit in the normal display region A2 through the partial transparent conductive lines ITO1, ITO2, and ITO3. However, in the display panel provided by the related art, when displaying a picture, a purple boundary line appears between the area a and the area B and between the area B and the area C, and the picture is purple in the area D in a low gray scale display state.

The present disclosure suggests that the reason for the purple boundary between region a and region B is: under the same gray scale, the on-off current time of the green light-emitting unit is longer than that of the red light-emitting unit, and the on-off current time of the red light-emitting unit is longer than that of the blue light-emitting unit; meanwhile, when the area A is transited to the area B, the transparent conducting wire ITO1 connected with the light-emitting unit in the area A is transited to the transparent conducting wire ITO3 connected with the light-emitting unit in the area B, the level of the transparent conducting wire is changed, and the parasitic capacitance of the transparent conducting wire is also greatly changed, so that the lighting current time of the green light-emitting unit in the area A and the lighting current time of the green light-emitting unit in the area B are greatly different, the red and green light at the junction position of the area A and the area B is stronger, the green light is weaker, and a purple boundary line is formed between the area A and the area B. Similarly, the purple boundary between the region B and the region C is also the same reason. In addition, the transparent wires connected to the light emitting units in the connection region D need to be wound in the column direction, and thus the length of the transparent wires is long, and the parasitic capacitance is large, so that the green light emitting units in the region D cannot reach the driving current of the green light emitting units, and finally the picture in the region D is purple.

Based on this, the present exemplary embodiment provides a display panel, as shown in fig. 2 and 3, fig. 2 is a schematic structural diagram of an exemplary embodiment of the display panel of the present disclosure, and fig. 3 is a partial enlarged view of fig. 2. The display panel may include a first display area A1, a second display area A2, a plurality of first light emitting units L1, and a plurality of first pixel driving circuits, the second display area A2 surrounds at least a portion of an edge of the first display area A1, the first light emitting units L1 are located in the first display area A1, and the first pixel driving circuits are located in the second display area A2. The first pixel driving circuit is configured to supply a driving current to the first light emitting unit L1, and the plurality of first light emitting units L1 may include a first R light emitting unit R1, a first G light emitting unit G1, and a first B light emitting unit B1. The plurality of first pixel driving circuits may include a plurality of first subpixel driving circuits D11, a plurality of second subpixel driving circuits D12, and a plurality of third subpixel driving circuits D13. The first subpixel driving circuit D11 may be configured to supply a driving current to the first G light emitting cell G1, the second subpixel driving circuit D12 may be configured to supply a driving current to the first R light emitting cell R1, and the third subpixel driving circuit D13 may be configured to supply a driving current to the first B light emitting cell B1. The display panel may further include: the first transparent conducting layer is positioned on one side of the substrate, the first transparent conducting layer can comprise a first transparent conducting wire ITO1, and the first transparent conducting wire ITO1 is used for connecting the first G light-emitting unit G1 and a first sub-pixel driving circuit D11; the second transparent conducting layer is positioned on one side of the substrate and comprises a second transparent conducting wire ITO2, and the second transparent conducting wire is used for connecting the first R light-emitting unit and the second sub-pixel driving circuit D12; the third transparent conductive layer is located at one side of the substrate, and may include a third transparent conductive line ITO3, where the third transparent conductive line is used to connect the first B light emitting unit and the third sub-pixel driving circuit D13.

In the present exemplary embodiment, the first R light emitting unit may be a red light emitting unit, the first G light emitting unit may be a green light emitting unit, and the first B light emitting unit may be a blue light emitting unit. The present exemplary embodiment provides driving to the light emitting cells of the same color through the transparent conductive lines in the same conductive layer, thereby preventing the parasitic capacitance of the transparent conductive lines connected to the light emitting cells of the same color from being abruptly changed in different regions, and further preventing a purple boundary from occurring between adjacent regions (A, B, C, D) in the related art.

It should be understood that in other exemplary embodiments, the plurality of first light emitting units may further include other numbers of color kinds of light emitting units. The display panel may also include other numbers of transparent conductive layers. The light-emitting units of each color can correspond to one transparent conductive layer, the light-emitting units of the same color can be connected with the corresponding first pixel driving circuits through the transparent conductive wires positioned on the same transparent conductive layer, and the light-emitting units of different colors can be connected with the corresponding first pixel driving circuits through the transparent conductive wires positioned on different transparent conductive layers.

In the present exemplary embodiment, the second display area A2 may be located at one side of the first display area A1 in the row direction X. In the second display area A2, the pixel driving circuits may be compressed in the row direction so that the second display area A2 may accommodate the redundant first pixel driving circuits, i.e., in the second display area, the number of columns of pixel driving circuits is greater than the number of columns of light emitting units. It should be understood that, in order to make the display characteristics uniform in the respective regions of the display panel, the pixel driving circuits at other positions of the display panel may have the same size and structure as the pixel driving circuits in the second display area A2. It should be noted that, in the present disclosure, the row direction X may be an extending direction of the gate lines in the display panel.

In the present exemplary embodiment, as shown in fig. 2, the first display area may be circular, and the first display area may be symmetrical with a dotted line AA. It should be appreciated that in other exemplary embodiments, the first display area may also be rectangular, oval, and the like.

In this exemplary embodiment, the second transparent conductive layer may be located on a side of the first transparent conductive layer facing away from the substrate base, and the third transparent conductive layer may be located on a side of the second transparent conductive layer facing away from the substrate base. The first transparent conductive layer, the second transparent conductive layer and the third transparent conductive layer can be positioned between the source drain layer and the anode layer of the display panel, and an insulating layer can be arranged between the adjacent transparent conductive layers. The parasitic capacitance of the first transparent conductive layer in unit area, the parasitic capacitance of the second transparent conductive layer in unit area, and the parasitic capacitance of the third transparent conductive layer in unit area may be the same or at least partially different.

In the present exemplary embodiment, as shown in fig. 3, the display panel may include a second R light emitting unit R2, a second G light emitting unit G2, and a second B light emitting unit B2 in the second display region; in the second display area A2, the second R light-emitting unit R2, the second G light-emitting unit G2, and the second B light-emitting unit B2 may be alternately distributed in sequence along the same light-emitting unit row, and in the same light-emitting unit row, two second G light-emitting units G2 distributed along the column direction may be disposed between the second R light-emitting unit R2 and the second B light-emitting unit B2, in adjacent light-emitting unit rows, the light-emitting units of the same color are not located in the same column, and in two light-emitting unit rows of the spaced light-emitting unit row, the light-emitting units of the same color are located in the same column.

In the present exemplary embodiment, as shown in fig. 3, the display panel may include first and second light emitting cell lines Lin1 and Lin2 located in the first display area A1, and the first and second light emitting cell lines Lin1 and Lin2 are alternately arranged in sequence in the column direction. In the first light emitting unit line Lin1, the first R light emitting units R1, the first G light emitting units G1, and the first B light emitting units B1 are sequentially and alternately distributed in a line direction, and in the same first light emitting unit line Lin1, two first G light emitting units G1 distributed in a column direction are disposed between the first R light emitting unit R1 and the first B light emitting unit B1. In the second light emitting cell line Lin2, the first R light emitting cells R1 and the first B light emitting cells B1 are alternately arranged in sequence in the line direction. In addition, in the adjacent light emitting unit rows, the light emitting units of the same color are located in different columns, and in the two light emitting unit rows spaced apart from the light emitting unit row, the light emitting units of the same color are located in the same column. That is, half the column number of the first G light emitting cells G1 is less in the first display area A1 than in the second display area A2. As shown in fig. 3, the position where the first G light emitting unit is not disposed may be provided with only the anode portion An, and it is understood that, in other exemplary embodiments, the position where the first G light emitting unit is not disposed may not be provided to improve the light transmittance of the first display area A1.

In the present exemplary embodiment, among the plurality of transparent conductive lines connected to the same pixel unit, the parasitic capacitance of the first transparent conductive line ITO1 may be smaller than the parasitic capacitance of the second transparent conductive line ITO2, and the parasitic capacitance of the second transparent conductive line ITO2 may be smaller than the parasitic capacitance of the third transparent conductive line ITO3. This setting can compensate the difference of first G luminescence unit G1 luminous current time and first R luminescence unit R1 luminous current time through the difference of first transparent conductor line ITO1 parasitic capacitance and second transparent conductor line ITO2 parasitic capacitance to and can compensate the difference of first R luminescence unit R1 luminous current time and first B luminescence unit B1 luminous current time through the difference of second transparent conductor line ITO2 parasitic capacitance and third transparent conductor line ITO3 parasitic capacitance, thereby improve the degree of accuracy that display panel shows the picture colour.

It should be noted that the "same pixel unit" may be defined according to the specific distribution structure of the light emitting units and the light mixing algorithm, in this exemplary embodiment, one pixel unit may include one first G light emitting unit G1, one first R light emitting unit R1, and one first B light emitting unit B1, and the first G light emitting unit G1, the first R light emitting unit R1, and the first B light emitting unit B1 may be adjacently disposed. As shown in fig. 3, in the present exemplary embodiment, the same pixel unit P may include a first G light emitting unit G1, a first R light emitting unit R1, and a first B light emitting unit B1 within a dotted line frame.

In the present exemplary embodiment, one implementation of implementing that "the parasitic capacitance of the first transparent conductive line ITO1 is smaller than the parasitic capacitance of the second transparent conductive line ITO2, and the parasitic capacitance of the second transparent conductive line ITO2 is smaller than the parasitic capacitance of the third transparent conductive line ITO 3" may be that, among a plurality of transparent conductive lines connected to the same pixel unit, the length of the first transparent conductive line ITO1 is smaller than the length of the second transparent conductive line ITO2, and the length of the second transparent conductive line ITO2 is smaller than the length of the third transparent conductive line ITO3. Specifically, as shown in fig. 3, the first pixel driving circuit may be configured to provide a driving current to the first light emitting unit L1 located in the same pixel circuit row. In the row direction, the orthographic projection of any second sub-pixel driving circuit D12 on the substrate base can be located on one side of the orthographic projection of any first sub-pixel driving circuit D11 on the substrate base, which is far away from the first display area A1, and the orthographic projection of any third sub-pixel driving circuit D13 on the substrate base can be located on one side of the orthographic projection of the second sub-pixel driving circuit D12 on the substrate base, which is far away from the first display area A1. For example, as illustrated in fig. 3, the first sub-pixel driving circuit D11 may be located at the first to fourth columns of the first pixel driving circuits r1 to r4; the second sub-pixel driving circuit D12 may be located at the fifth to eighth columns of the first pixel driving circuits r5 to r8; the third sub-pixel driving circuit D13 may be located at the ninth column first pixel driving circuit r9 to the twelfth column first pixel driving circuit r12.

It should be understood that, in other exemplary embodiments, there are still other ways to realize that "the parasitic capacitance of the first transparent conductive line ITO1 is smaller than the parasitic capacitance of the second transparent conductive line ITO2, and the parasitic capacitance of the second transparent conductive line ITO2 is smaller than the parasitic capacitance of the third transparent conductive line ITO 3", for example, the parasitic capacitances of the first transparent conductive line ITO1, the second transparent conductive line ITO2, and the third transparent conductive line ITO3 can also be adjusted by adjusting the positions of the first transparent conductive layer, the second transparent conductive layer, and the third transparent conductive layer in the display panel laminating direction.

In the present exemplary embodiment, as shown in fig. 3, the orthographic projection of the first transparent conductive line ITO on the substrate, the orthographic projection of the second transparent conductive line ITO2 on the substrate, and the orthographic projection of the third transparent conductive line ITO3 on the substrate may extend along the row direction. As shown in fig. 3, the orthographic projection of the first transparent conductive line ITO1 on the substrate base plate can be located on the orthographic projection of the same pixel driving circuit row on the substrate base plate; the orthographic projection of the second transparent conductive line ITO2 on the substrate base plate can be positioned on the orthographic projection of the same pixel driving circuit row on the substrate base plate; the orthographic projection of the third transparent conductive line ITO3 on the substrate base plate can be positioned on the orthographic projection of the same pixel driving circuit row on the substrate base plate. The transparent conductive lines mainly extend along the row direction, and the extension length in the column direction is smaller or does not extend in the column direction, so that the length difference between two transparent conductive lines connected to the same-color first light-emitting units in every two adjacent columns is close to that of the first transparent conductive line ITO1 connected to the first pixel driving circuit r1 in the first column and the first transparent conductive line ITO1 connected to the first pixel driving circuit r2 in the second column, for example, the length difference between the first transparent conductive line ITO1 connected to the first pixel driving circuit r1 in the first column and the first transparent conductive line ITO1 connected to the first pixel driving circuit r2 in the second column and the length difference between the first transparent conductive line ITO1 connected to the first pixel driving circuit r3 in the third column, so that the brightness of the first light-emitting units can be uniformly changed in the row direction, and the arrangement reduces the influence of the circuit layer shape in the display panel on the capacitance of the transparent conductive lines.

In the present exemplary embodiment, as shown in fig. 3, the plurality of first G light emitting units may include n1 columns of first G light emitting units, wherein the (m + 1) th column of first G light emitting units is located at a side of the mth column of first G light emitting units away from the second display region; the plurality of first sub-pixel driving circuits comprise n1 columns of first sub-pixel driving circuits, wherein the m +1 column of first sub-pixel driving circuits are positioned on one side, away from the first display area, of the m column of first sub-pixel driving circuits; the first sub-pixel driving circuit of the Xth column is used for providing a driving current for the first G light-emitting unit of the Xth column; the plurality of first R light-emitting units comprise n2 columns of first R light-emitting units, wherein the m +1 th column of first R light-emitting units are positioned on one side of the m-th column of first R light-emitting units far away from the second display area. The plurality of second sub-pixel driving circuits comprise n2 columns of second sub-pixel driving circuits, wherein the m +1 column of second sub-pixel driving circuits is positioned on one side, away from the first display area, of the m column of second sub-pixel driving circuits; the second sub-pixel driving circuit of the X-th column is used for providing driving current for the first R light-emitting unit of the X-th column. The plurality of first B light-emitting units comprise n2 columns of first B light-emitting units, wherein the m +1 column of first B light-emitting units are positioned on one side of the m column of first B light-emitting units away from the second display area; the plurality of third sub-pixel driving circuits comprise n2 columns of third sub-pixel driving circuits, wherein the m +1 column of third sub-pixel driving circuits is positioned on one side of the m column of third sub-pixel driving circuits, which is far away from the first display area; and the X column third sub-pixel driving circuit is used for providing a driving current for the X column first B light-emitting unit. Where m and X are positive integers greater than or equal to1, and n1, n2, and n3 are positive integers greater than or equal to2, in the present exemplary embodiment, n1, n2, and n3 may all be equal to 4. Namely, the first G light emitting unit and the first sub-pixel driving circuit D11 are connected in a manner of being close to each other only and far away from each other, and the first R light emitting unit and the second sub-pixel driving circuit D12 are connected in a manner of being close to each other only and far away from each other; the first B light emitting unit and the third sub-pixel driving circuit D13 are connected in a manner of being close to each other only and far away from each other. It should be noted that, in the above description, the number of columns of each sub-pixel driving circuit is counted separately, for example, in fig. 2, the sixth column of the first pixel driving circuit r6 is the second column of the second sub-pixel driving circuit, and the twelfth column of the first pixel driving circuit r12 is the fourth column of the third sub-pixel driving circuit. Similarly, the number of columns of the first G light-emitting unit, the first R light-emitting unit, and the first B light-emitting unit is also counted individually.

It should be understood that in other exemplary embodiments, the first G light emitting unit and the first sub-pixel driving circuit D11 may have other connection manners, the first R light emitting unit and the second sub-pixel driving circuit D12 may have other connection manners, and the first B light emitting unit and the third sub-pixel driving circuit D13 may have other connection manners. For example, the first G light emitting unit and the first sub-pixel driving circuit D11 may be connected in a close-to-far manner. For example, as shown in fig. 3, the first column first G light emitting unit may be connected to the fourth column first sub-pixel driving circuit D11, the second column first G light emitting unit may be connected to the third column first sub-pixel driving circuit D11, the arrangement may be such that the lengths of the plurality of first transparent conductive lines ITO1 for connecting the first sub-pixel driving circuit and the first G light emitting unit are all equal, so that different first transparent conductive lines ITO1 have the same parasitic capacitance, and the arrangement may increase the uniformity of the luminance of the first G light emitting unit at different positions of the first display area. Similarly, the first R light emitting unit and the second sub-pixel driving circuit D12, and the first B light emitting unit and the third sub-pixel driving circuit D13 may also adopt the above-mentioned near-far connection manner.

It should be understood that in other exemplary embodiments, the first display area may further include other numbers of rows and columns of the first light emitting units. Further, in other exemplary embodiments, the second display area A2 may also be located at one side of the first display area A1 in the column direction, and accordingly, the pixel driving circuit for driving the first light emitting unit may be disposed at the second display area A2 by compressing the pixel driving circuit in the column direction. Similarly, the display panel can also achieve the same technical effect through the arrangement mode of the transparent conducting wire.

In the present exemplary embodiment, as shown in fig. 3, a row of pixel driving circuits may include 3 regions 11, 12, 13 in the column direction, wherein the first transparent conductive lines ITO1 may be located in the region 11, the second transparent conductive lines ITO2 may be located in the region 12, and the third transparent conductive lines ITO3 may be located in the region 13. The arrangement can ensure that the orthographic projection of the first transparent conductive wire ITO1 on the substrate, the orthographic projection of the second transparent conductive wire ITO2 on the substrate and the orthographic projection of the third transparent conductive wire ITO3 on the substrate are not overlapped, thereby avoiding the mutual influence of signals on the transparent conductive wires. It should be understood that, in other exemplary embodiments, a row of pixel driving circuits may further include 2 regions in the column direction, wherein the first transparent conductive lines ITO1 and the third transparent conductive lines ITO3 may be located in the same region, that is, the region where the plurality of first transparent conductive lines ITO1 are located coincides with the region where the plurality of third transparent conductive lines ITO3 are located, and the second transparent conductive lines ITO2 may be located in another region. This setting can integrate more transparent conductor lines on the limited column direction size of pixel drive circuit, simultaneously because first transparent conductor line ITO1 place transparent conducting layer and third transparent conductor line ITO3 place transparent conducting layer distance is far away to this setting can avoid first transparent conductor line ITO1 and third transparent conductor line ITO3 to go up signal mutual interference as far as possible.

In the present exemplary embodiment, as shown in fig. 3, an area of the first G light emitting unit orthographically projected on the substrate base may be smaller than an area of the second G light emitting unit orthographically projected on the substrate base; the orthographic projection area of the first R light-emitting unit on the substrate base plate can be smaller than the orthographic projection area of the second R light-emitting unit on the substrate base plate; the area of the orthographic projection of the first B light-emitting unit on the substrate base may be smaller than the area of the orthographic projection of the second B light-emitting unit on the substrate base. This arrangement can increase the light transmittance of the first display area A1.

In the present exemplary embodiment, as shown in fig. 3, the position of the anode portion An where the first G light emitting unit is not disposed may be used to increase the area of the first G light emitting unit, the area of the first R light emitting unit, and the area of the first B light emitting unit, so as to increase the service life of the first light emitting unit in the first display region.

In the present exemplary embodiment, as shown in fig. 3, the first pixel driving circuits of two adjacent columns may be disposed in close proximity, that is, no pixel driving circuit is disposed between the first pixel driving circuits of two adjacent columns. It should be understood that, in other exemplary embodiments, other pixel driving circuits may be disposed between the first pixel driving circuits of two adjacent columns, and the other pixel driving circuits may be used to provide driving current to the light emitting units located in the second display area A2.

In the present exemplary embodiment, as shown in fig. 2 and 3, the display panel may include a structure symmetrical along a dotted line AA.

Fig. 4 is a schematic structural diagram of another exemplary embodiment of a display panel according to the present disclosure. The arrangement of the light emitting units in the second display area A2 is the same as that of the light emitting units in the first display area. That is, the second display area A2 and the first display area A1 both adopt the RGB pixel structure arrangement mode, and this arrangement can make the pixel density of the second display area A2 and the first display area A1 the same, so that the display uniformity of the display panel can be improved.

Fig. 5 is a schematic structural diagram of a first display region in another exemplary embodiment of a display panel according to the present disclosure. In the first display area A1, the pixel unit P may include a first R light emitting unit R1, a first G light emitting unit G1, and a first B light emitting unit B1, and the first R light emitting unit R1, the first G light emitting unit G1, and the first B light emitting unit B1 in the same pixel unit P may be distributed in a triangle. In the first display area A1, the first R light-emitting unit R1, the first G light-emitting unit G1, and the first B light-emitting unit B1 may be alternately distributed in the column direction in sequence, the light-emitting units of the same color are located in the same row, the light-emitting units of different colors are located in different rows, in adjacent light-emitting unit columns, the light-emitting units of the same color are located in different rows, and in two light-emitting unit columns of one light-emitting unit column spaced apart from each other, the light-emitting units of the same color are located in the same row.

As shown in fig. 3, since the first G light emitting cells are not disposed on a portion of the anode portion An in the first display area A1, the number of columns of light emitting cells in the first display area is reduced to 3/4 of the original number. Accordingly, the positions of the second display area A2 originally used for disposing the pixel driving circuit to drive the first G light emitting units may form a dummy pixel area. Fig. 6 is a schematic structural diagram of another exemplary embodiment of a display panel according to the present disclosure. The display panel may further include a virtual pixel area A4, and a virtual sub-pixel driving unit D4 located in a partial area of the virtual pixel area A4, and the virtual pixel area A4 may be located on a side of the second display area A2 away from the first display area A1. The virtual sub-pixel driving unit D4 may not emit light, the virtual sub-pixel driving unit D4 may only include a pixel driving circuit, the active layer at the position of the virtual sub-pixel driving unit D4 may form an edge of the active layer of the normal display area (the display area outside the first display area), and this setting may ensure that the threshold voltage of the driving transistor in the normal display area is stable.

In the present exemplary embodiment, as shown in fig. 6, the display panel may further include a first data line Da1 located in the second display area A2, and the first data line Da1 may be used to provide a data signal to the first pixel driving circuit; the display panel further includes a third display area A3, a third pixel driving circuit D3 located in the third display area A3, and a third data line Da3 for connecting the third pixel driving circuit D3, the third display area A3 may be located at one side of the first display area A1 in the column direction Y, and the third data line Da3 may be used to provide a data signal to the third pixel driving circuit D3. The display panel may further include a connection line Da4, the connection line Da4 may be connected between the first data line Da1 and the third data line Da3, at least a portion of the connection line Da4 may be located in the dummy pixel area A4, and an orthographic projection of the connection line Da4 on the substrate may not intersect an orthographic projection of the dummy sub-pixel driving unit D4 on the substrate. That is, a partial area of the dummy pixel area A4 may also be used for routing of the data lines, and this arrangement may reduce the length of routing of the data lines, that is, the resistance load (RC loading) of the data lines, since the dummy pixel area A4 is closer to the first display area A1.

The present exemplary embodiment also provides a display apparatus including the display panel described above and a sensor device facing the first display region of the display panel. The sensor device may be an optical sensor, such as a camera. The display device can be a mobile phone, a tablet computer and other display devices.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice in the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is to be limited only by the following claims.

Claims (18)

1. A display panel, comprising a first display area, a second display area surrounding at least a portion of an edge of the first display area, a plurality of first light emitting units, a plurality of first pixel driving circuits in the first display area, the first pixel driving circuits in the second display area for providing driving current to the first light emitting units, the plurality of first light emitting units comprising light emitting units of a plurality of colors, the display panel further comprising:

a substrate base plate;

the light-emitting units of the same color are connected with the corresponding first pixel driving circuits through transparent conducting wires positioned on the same transparent conducting layer, and the light-emitting units of different colors are connected with the corresponding first pixel driving circuits through transparent conducting wires positioned on different transparent conducting layers.

2. The display panel according to claim 1, wherein the plurality of first light emitting units include a first R light emitting unit, a first G light emitting unit, and a first B light emitting unit, and wherein the plurality of transparent conductive layers include:

the first transparent conducting layer is positioned on one side of the substrate and comprises a first transparent conducting wire, and the first transparent conducting wire is used for connecting the first G light-emitting unit and a corresponding first pixel driving circuit;

the second transparent conducting layer is positioned on one side of the substrate and comprises a second transparent conducting wire, and the second transparent conducting wire is used for connecting the first R light-emitting unit and a corresponding first pixel driving circuit;

and the third transparent conducting layer is positioned on one side of the substrate and comprises a third transparent conducting wire, and the third transparent conducting wire is used for connecting the first B light-emitting unit and the corresponding first pixel driving circuit.

3. The display panel according to claim 2, further comprising a plurality of pixel units in the first display region, the pixel units including the first G light-emitting unit, the first R light-emitting unit, and the first B light-emitting unit;

in a plurality of transparent conductive lines connected to the same pixel unit, the parasitic capacitance of the first transparent conductive line is smaller than that of the second transparent conductive line, and the parasitic capacitance of the second transparent conductive line is smaller than that of the third transparent conductive line.

4. The display panel according to claim 2, further comprising a plurality of pixel units in the first display region, the pixel units including the first G light-emitting unit, the first R light-emitting unit, and the first B light-emitting unit;

and in the plurality of transparent conductive lines connected with the same pixel unit, the length of the first transparent conductive line is smaller than that of the second transparent conductive line, and the length of the second transparent conductive line is smaller than that of the third transparent conductive line.

5. The display panel according to claim 4, wherein the second display region is located on one side of the first display region in a row direction, the first pixel driving circuit is configured to provide a driving current to the first light emitting unit located in the same pixel circuit row, and an orthogonal projection of the first transparent conductive line on the substrate, an orthogonal projection of the second transparent conductive line on the substrate, and an orthogonal projection of the third transparent conductive line on the substrate extend along the row direction;

the first pixel driving circuit comprises a plurality of first sub-pixel driving circuits, a plurality of second sub-pixel driving circuits and a plurality of third sub-pixel driving circuits, wherein the first sub-pixel driving circuits are used for providing driving current for the first G light-emitting unit through the first transparent conducting wire, the second sub-pixel driving circuits are used for providing driving current for the first R light-emitting unit through the second transparent conducting wire, and the third sub-pixel driving circuits are used for providing driving current for the first B light-emitting unit through the third transparent conducting wire;

in the row direction, the orthographic projection of any second sub-pixel driving circuit on the substrate base plate is positioned on one side, far away from the first display area, of any first sub-pixel driving circuit on the substrate base plate, and the orthographic projection of any third sub-pixel driving circuit on the substrate base plate is positioned on one side, far away from the first display area, of the second sub-pixel driving circuit on the substrate base plate.

6. The display panel according to claim 5, wherein the plurality of first G light emitting units includes n1 columns of first G light emitting units, wherein the m +1 column of first G light emitting units is located on a side of the m column of first G light emitting units away from the second display region;

the plurality of first sub-pixel driving circuits comprise n1 columns of first sub-pixel driving circuits, wherein the m +1 column of first sub-pixel driving circuits are positioned on one side, away from the first display area, of the m column of first sub-pixel driving circuits;

the first sub-pixel driving circuit of the Xth column is used for providing a driving current for the first G light-emitting unit of the Xth column;

the plurality of first R light-emitting units comprise n2 columns of first R light-emitting units, wherein the m +1 column of first R light-emitting units are positioned on one side of the m column of first R light-emitting units away from the second display area;

the plurality of second sub-pixel driving circuits comprise n2 columns of second sub-pixel driving circuits, wherein the m +1 column of second sub-pixel driving circuits is positioned on one side, away from the first display area, of the m column of second sub-pixel driving circuits;

the second sub-pixel driving circuit of the Xth column is used for providing a driving current for the first R light-emitting units of the Xth column;

the plurality of first B light-emitting units comprise n2 columns of first B light-emitting units, wherein the m +1 column of first B light-emitting units are positioned on one side of the m column of first B light-emitting units away from the second display area;

the plurality of third sub-pixel driving circuits comprise n2 columns of third sub-pixel driving circuits, wherein the m +1 column of third sub-pixel driving circuits is positioned on one side of the m column of third sub-pixel driving circuits, which is far away from the first display area;

the second sub-pixel driving circuit is used for providing a driving current for the second B light-emitting unit in the second column;

wherein m and X are positive integers more than or equal to1, and n1, n2 and n3 are positive integers more than or equal to 2.

7. The display panel according to claim 5, wherein the orthographic projection of the first transparent conductive line on the substrate base plate is positioned on the orthographic projection of the same pixel driving circuit row on the substrate base plate;

the second transparent conductive line is positioned on the orthographic projection of the same pixel driving circuit row on the substrate base plate in the orthographic projection of the substrate base plate;

the orthographic projection of the third transparent conductive wire on the substrate base plate is positioned on the orthographic projection of the same pixel driving circuit row on the substrate base plate.

8. The display panel according to claim 7, wherein the first transparent conductive line and the third transparent conductive line are formed in a first region and the second transparent conductive line is formed in a second region in the same pixel driving circuit row, and the first region and the second region do not intersect each other.

9. The display panel according to claim 2, wherein the display panel comprises a first light emitting cell row and a second light emitting cell row in the first display region, the first light emitting cell row and the second light emitting cell row being alternately arranged in sequence in a column direction;

in the first light emitting unit row, the first R light emitting units, the first G light emitting units and the first B light emitting units are sequentially and alternately distributed in the row direction, and in the same first light emitting unit row, two first G light emitting units distributed in the column direction are arranged between the first R light emitting unit and the first B light emitting unit;

in the second light emitting unit row, the first R light emitting units and the first B light emitting units are alternately arranged in sequence in the row direction;

in adjacent light-emitting unit rows, the light-emitting units of the same color are located in different columns, and in two light-emitting unit rows spaced apart from one another by the light-emitting unit rows, the light-emitting units of the same color are located in the same column.

10. The display panel according to claim 2, wherein in the first display region, the first R light emitting units, the first G light emitting units, and the first B light emitting units are alternately arranged in sequence in a column direction, the light emitting units of the same color are located in the same row, the light emitting units of different colors are located in different rows, the light emitting units of the same color are located in different rows in adjacent light emitting unit columns, and the light emitting units of the same color are located in the same row in two light emitting unit columns spaced apart by one light emitting unit column.

11. The display panel according to claim 2, further comprising a second R light emitting unit, a second G light emitting unit, and a second B light emitting unit in the second display region;

in the second display area, the second R light-emitting units, the second G light-emitting units, and the second B light-emitting units are alternately distributed in sequence along the same light-emitting unit row, and in the same light-emitting unit row, two second G light-emitting units distributed in the column direction are disposed between the second R light-emitting unit and the second B light-emitting unit, in adjacent light-emitting unit rows, the light-emitting units of the same color are not located in the same column, and in two light-emitting unit rows of the spaced light-emitting unit row, the light-emitting units of the same color are located in the same column.

12. The display panel according to claim 9, wherein the display panel further comprises a second R light-emitting unit, a second G light-emitting unit, and a second B light-emitting unit in the second display region;

the arrangement mode of the light emitting units in the second display area is the same as that of the light emitting units in the first display area.

13. The display panel according to claim 2, wherein the second transparent conductive layer is located on a side of the first transparent conductive layer facing away from the substrate base plate, and the third transparent conductive layer is located on a side of the second transparent conductive layer facing away from the substrate base plate.

14. The display panel of claim 1, wherein the display panel further comprises a dummy pixel region and a dummy sub-pixel driving unit located in a partial region of the dummy pixel region, and the dummy pixel region is located on a side of the second display region away from the first display region.

15. The display panel according to claim 14, further comprising a first data line in the second display region, the first data line being configured to supply a data signal to the first pixel driving circuit;

the display panel further comprises a third display area, a third pixel driving circuit and a third data line, wherein the third pixel driving circuit and the third data line are positioned in the third display area, the third display area is positioned on one side of the first display area in the column direction, and the third data line is used for providing data signals for the third pixel driving circuit;

the display panel further comprises a connecting line, the connecting line is connected between the first data line and the third data line, and at least part of the connecting line is located in the virtual pixel area.

16. The display panel according to claim 1, wherein the number of columns of pixel driving circuits in the second display area is greater than the number of columns of light emitting units in the second display area.

17. The display panel according to claim 12, wherein a density of light emitting cells in the first display region is equal to a density of light emitting cells in the second display region;

and the orthographic projection of the first R light-emitting unit on the substrate base plate is smaller than the orthographic projection of the second R light-emitting unit on the substrate base plate, the orthographic projection of the first G light-emitting unit on the substrate base plate is smaller than the orthographic projection of the second G light-emitting unit on the substrate base plate, and the orthographic projection of the first B light-emitting unit on the substrate base plate is smaller than the orthographic projection of the second B light-emitting unit on the substrate base plate.

18. A display apparatus comprising the display panel of any one of claims 1 to 17 and a sensor device, the sensor device being opposed to the first display region of the display panel.

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