Display panel, display device

Abstract

The present disclosure relates to the technical field of display, and provides a display panel and a display device. The display panel comprises a first display area, a second display area, a plurality of first light emitting units located in the first display area, and a plurality of first pixel driving circuits located in the second display area, the first pixel driving circuits being configured to provide driving current to the first light emitting units, the plurality of first light emitting units comprising light emitting units of multiple colors, and the display panel further comprises a substrate, and a plurality of transparent conductive layers located on one side of the substrate. Each color of light emitting unit corresponds to one layer of transparent conductive layer, the light emitting units of the same color are connected to the corresponding first pixel driving circuits through transparent conductive lines located in the same transparent conductive layer, and the light emitting units of different colors are connected to the corresponding first pixel driving circuits through transparent conductive lines located in different transparent conductive layers. The first display area in the display panel has a better display effect.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and more particularly to a display panel and a display device. Background Technology

[0002] Under-display camera technology involves creating a light-transmitting area on the display panel and placing the camera directly opposite this area to achieve full-screen display. In these technologies, light-emitting units are typically located only within the light-transmitting area, with a pixel driving circuit located outside the area supplying driving current to these units. However, in these technologies, light-emitting units in different areas of the light-transmitting area need to be connected to the pixel driving circuit outside the area via transparent conductive lines at different levels. However, because these transparent conductive lines at different levels have different parasitic capacitances, the display effect varies significantly between different areas of the light-transmitting area.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art.

[0004] Public content

[0005] According to one aspect of this disclosure, a display panel is provided, the display panel including a first display area, a second display area, a plurality of first light-emitting units, and a plurality of first pixel driving circuits. The second display area surrounds at least a portion of the edge of the first display area. The first light-emitting units are located in the first display area, and the first pixel driving circuits are located in the second display area. The first pixel driving circuits are used to provide driving current to the first light-emitting units. The plurality of first light-emitting units include light-emitting units of multiple colors. The display panel further includes: a substrate and multiple transparent conductive layers, the multiple transparent conductive layers being located on one side of the substrate. Each color of light-emitting unit corresponds to one transparent conductive layer. Light-emitting units of the same color are connected to their corresponding first pixel driving circuits through transparent conductive lines located on the same transparent conductive layer, and light-emitting units of different colors are connected to their corresponding first pixel driving circuits through transparent conductive lines located on different transparent conductive layers.

[0006] In one exemplary embodiment of this disclosure, 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; the multilayer transparent conductive layer includes: a first transparent conductive layer, a second transparent conductive layer, and a third transparent conductive layer; the first transparent conductive layer is located on one side of the substrate and includes a first transparent conductive line, which is used to connect the first G light-emitting unit and its corresponding first pixel driving circuit; the second transparent conductive layer is located on one side of the substrate and includes a second transparent conductive line, which is used to connect the first R light-emitting unit and its corresponding first pixel driving circuit; the third transparent conductive layer is located on one side of the substrate and includes a third transparent conductive line, which is used to connect the first B light-emitting unit and its corresponding first pixel driving circuit.

[0007] In one exemplary embodiment of this disclosure, the display panel further includes a plurality of pixel units located in the first display area, the pixel unit including a first G light-emitting unit, a first R light-emitting unit, and a first B light-emitting unit; among the plurality of transparent conductive lines connected to the same pixel unit, the parasitic capacitance of the first transparent conductive line is smaller than the parasitic capacitance of the second transparent conductive line, and the parasitic capacitance of the second transparent conductive line is smaller than the parasitic capacitance of the third transparent conductive line.

[0008] In an exemplary embodiment of this disclosure, the display panel further includes a plurality of pixel units located in the first display area, the pixel unit including a first G light-emitting unit, a first R light-emitting unit, and a first B light-emitting unit; among the plurality of transparent conductive lines connected to the same pixel unit, the length of the first transparent conductive line is less than the length of the second transparent conductive line, and the length of the second transparent conductive line is less than the length of the third transparent conductive line.

[0009] In one exemplary embodiment of this disclosure, the second display area is located on one side of the first display area in the row direction X. The first pixel driving circuit is used to provide driving current to a first light-emitting unit located in the same pixel circuit row as it. The first transparent conductive line, the second transparent conductive line, and the third transparent conductive line all extend along the row direction when projected onto the substrate. The first pixel driving circuit includes 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. The first sub-pixel driving circuit is used to provide driving current to the first G light-emitting unit through the first transparent conductive line. The second sub-pixel driving circuit is used to provide driving current to the first R light-emitting unit through the second transparent conductive line. The third sub-pixel driving circuit is used to provide driving current to the first B light-emitting unit through the third transparent conductive line. In the row direction, any second sub-pixel driving circuit is located on the side of any first sub-pixel driving circuit whose projection onto the substrate is away from the first display area. Any third sub-pixel driving circuit is located on the side of the second sub-pixel driving circuit whose projection onto the substrate is away from the first display area.

[0010] In one exemplary embodiment of this disclosure, a plurality of first G light-emitting units include n1 columns of first G light-emitting units, wherein the (m+1)th column of first G light-emitting units is located on the side of the m-th column of first G light-emitting units away from the second display area; a plurality of first sub-pixel driving circuits include n1 columns of first sub-pixel driving circuits, wherein the (m+1)th column of first sub-pixel driving circuits is located on the side of the m-th column of first sub-pixel driving circuits away from the first display area; an X-th column of first sub-pixel driving circuits is used to provide driving current to the X-th column of first G light-emitting units; a plurality of first R light-emitting units include n2 columns of first R light-emitting units, wherein the (m+1)th column of first R light-emitting units is located on the side of the m-th column of first R light-emitting units away from the second display area; a plurality of second sub-pixel driving circuits include n2 columns of second sub-pixel driving circuits, wherein... The (m+1)th column second sub-pixel driving circuit is located on the side of the m-th column second sub-pixel driving circuit away from the first display area; the X-th column second sub-pixel driving circuit is used to provide driving current to the X-th column first R light-emitting unit; the plurality of first B light-emitting units include n3 columns of first B light-emitting units, wherein the (m+1)th column first B light-emitting unit is located on the side of the m-th column first B light-emitting unit away from the second display area; the plurality of third sub-pixel driving circuits include n3 columns of third sub-pixel driving circuits, wherein the (m+1)th column third sub-pixel driving circuit is located on the side of the m-th column third sub-pixel driving circuit away from the first display area; the X-th column third sub-pixel driving circuit is used to provide driving current to the X-th column first B light-emitting unit; wherein m and X are positive integers greater than or equal to 1, and n1, n2, and n3 are positive integers greater than or equal to 2.

[0011] In one exemplary embodiment of this disclosure, the first transparent conductive line is projected onto the same pixel driving circuit row on the same projection of the substrate; the second transparent conductive line is projected onto the same pixel driving circuit row on the same projection of the substrate; and the third transparent conductive line is projected onto the same pixel driving circuit row on the same projection of the substrate.

[0012] In one exemplary embodiment of this disclosure, in the same pixel driving circuit row, the first transparent conductive line and the third transparent conductive line are both formed in the first region, and the second transparent conductive line is formed in the second region, wherein the first region and the second region do not intersect.

[0013] In an exemplary embodiment of this disclosure, the display panel includes a first row of light-emitting units and a second row of light-emitting units located in the first display area. The first row of light-emitting units and the second row of light-emitting units are alternately arranged in the column direction. In the first row of light-emitting units, the first R light-emitting unit, the first G light-emitting unit, and the first B light-emitting unit are alternately distributed in the row direction. In the same first row of light-emitting units, two first G light-emitting units distributed in the column direction are disposed between the first R light-emitting unit and the first B light-emitting unit. In the second row of light-emitting units, the first R light-emitting unit and the first B light-emitting unit are alternately arranged in the row direction.

[0014] In adjacent rows of light-emitting units, light-emitting units of the same color are located in different columns, and in two rows of light-emitting units separated by one row of light-emitting units, light-emitting units of the same color are located in the same column.

[0015] In an exemplary embodiment of this disclosure, in the first display area, the first R light-emitting unit, the first G light-emitting unit, and the first B light-emitting unit are alternately distributed in the column direction. Light-emitting units of the same color are located in the same row, and light-emitting units of different colors are located in different rows. In adjacent light-emitting unit columns, light-emitting units of the same color are located in different rows. In two light-emitting unit columns separated by one light-emitting unit column, light-emitting units of the same color are located in the same row.

[0016] In an exemplary embodiment of this 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 area; in the second display area, the second R light-emitting unit, the second G light-emitting unit, and the second B light-emitting unit are alternately distributed along the same light-emitting unit row, and in the same light-emitting unit row, two second G light-emitting units distributed along the column direction are arranged between the second R light-emitting unit and the second B light-emitting unit; in adjacent light-emitting unit rows, light-emitting units of the same color are not located in the same column, and in two light-emitting unit rows separated by one light-emitting unit row, light-emitting units of the same color are located in the same column.

[0017] In one exemplary embodiment of this 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 area; the arrangement of the light-emitting units in the second display area is the same as the arrangement of the light-emitting units in the first display area.

[0018] In one exemplary embodiment of this disclosure, the second transparent conductive layer is located on the side of the first transparent conductive layer that is away from the substrate, and the third transparent conductive layer is located on the side of the second transparent conductive layer that is away from the substrate.

[0019] In one exemplary embodiment of this disclosure, the display panel further includes a virtual pixel area and a virtual sub-pixel driving unit located in a portion of the virtual pixel area, wherein the virtual pixel area is located on the side of the second display area away from the first display area.

[0020] In one exemplary embodiment of this disclosure, the display panel further includes a first data line located in the second display area, the first data line being used to provide a data signal to the first pixel driving circuit; the display panel further includes a third display area, and a third pixel driving circuit and a third data line located in the third display area, the third display area being located on one side of the first display area in the column direction, the third data line being used to provide a data signal to the third pixel driving circuit; the display panel further includes a connecting line, the connecting line being connected between the first data line and the third data line, the connecting line being at least partially located in the virtual pixel area.

[0021] In one exemplary embodiment of this disclosure, 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.

[0022] In an exemplary embodiment of this disclosure, the density of light-emitting units in the first display area is equal to the density of light-emitting units in the second display area; and the orthographic projection of the first R light-emitting unit onto the substrate is smaller than the orthographic projection of the second R light-emitting unit onto the substrate, the orthographic projection of the first G light-emitting unit onto the substrate is smaller than the orthographic projection of the second G light-emitting unit onto the substrate, and the orthographic projection of the first B light-emitting unit onto the substrate is smaller than the orthographic projection of the second B light-emitting unit onto the substrate.

[0023] According to one aspect of this disclosure, a display device is provided, the display device including the above-described display panel and sensor, the sensor being directly opposite a first display area of ​​the display panel.

[0024] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0026] Figure 1 This is a schematic diagram of the structure of a display panel in related technologies;

[0027] Figure 2 This is a schematic diagram of the structure of a display panel in an exemplary embodiment of the present disclosure;

[0028] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0029] Figure 4 This is a schematic diagram of the structure in another exemplary embodiment of the display panel of this disclosure;

[0030] Figure 5 This is a schematic diagram of the structure of the first display area in another exemplary embodiment of the display panel of this disclosure;

[0031] Figure 6 This is a schematic diagram of the structure of another exemplary embodiment of the display panel of this disclosure. Detailed Implementation

[0032] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that this disclosure will be more comprehensive and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0033] Although relative terms such as "up" and "down" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the icon's arrangement is flipped so that it is upside down, the component described as "up" will become the component described as "down." Other relative terms such as "high," "low," "top," "bottom," "left," and "right" also have similar meanings. When a structure is "up" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0034] The terms “a,” “one,” and “the” are used to indicate the existence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended meaning of inclusion and that there may be other elements / components / etc. in addition to the listed elements / components / etc.

[0035] like Figure 1The diagram shown illustrates the structure of a display panel in the related art. This display panel may include a light-transmitting area A1 and a normal display area A2. The light-transmitting area A1 contains only light-emitting units, while the normal display area A2 contains pixel driving circuits for driving the light-emitting units in the light-transmitting area A1. Figure 1 As shown, in related technologies, the light-transmitting area A1 may include four regions A, B, C, and D. The display panel may also include a first transparent conductive layer, a second transparent conductive layer, and a third transparent conductive layer, wherein the first transparent conductive layer, the second transparent conductive layer, and the third transparent conductive layer may be sequentially stacked from the substrate of the display panel toward the light-emitting layer. Figure 1 As shown, the first transparent conductive layer may include multiple transparent wires ITO1, the second conductive layer may include multiple transparent wires ITO2, and the third transparent conductive layer may include multiple transparent wires ITO3. Specifically, the light-emitting units in region A are connected to the pixel driving circuit located in the normal display area A2 via partially transparent wires ITO1; the light-emitting units in region B are connected to the pixel driving circuit located in the normal display area A2 via partially transparent wires ITO3; the light-emitting units in region C are connected to the pixel driving circuit located in the normal display area A2 via partially transparent wires ITO1; and the light-emitting units in region D are connected to the pixel driving circuit located in the normal display area A2 via partially transparent wires ITO1, partially transparent wires ITO2, and partially transparent wires ITO3. However, when displaying images, the display panel provided by the related technology exhibits a purple dividing line between region A and region B, and between region B and region C, and region D shows severe purple tinging in low grayscale display mode.

[0036] This disclosure proposes that the purple boundary line between region A and region B is due to the following reasons: At the same grayscale, the turn-on current time of the green emitting unit is greater than that of the red emitting unit, and the turn-on current time of the red emitting unit is greater than that of the blue emitting unit. Simultaneously, during the transition from region A to region B, the transparent conductor ITO1 connected to the emitting units in region A transitions to the transparent conductor ITO3 connected to the emitting units in region B. This change in the layer of the transparent conductor leads to a significant change in its parasitic capacitance. Consequently, the turn-on current time of the green emitting unit in region A differs considerably from that in region B, resulting in stronger red and green light and weaker green light at the boundary between regions A and B, thus causing the purple boundary line between them. Similarly, the purple boundary line between region B and region C is caused by the same reason. Furthermore, because the transparent wires connecting the light-emitting units in area D need to be wound in the column direction, their length is relatively long and their parasitic capacitance is relatively large. As a result, the green light-emitting units in area D cannot reach their required driving current, which ultimately causes the image in area D to turn purple.

[0037] Based on this, this exemplary embodiment provides a display panel, such as Figure 2 , 3 As shown, Figure 2 This is a schematic diagram of the structure of a display panel in an exemplary embodiment of the present disclosure. Figure 3 for Figure 2 The image shows a partial enlarged view. 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 the 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 circuits are used to provide driving current to the first light-emitting units L1. 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 sub-pixel driving circuits D11, a plurality of second sub-pixel driving circuits D12, and a plurality of third sub-pixel driving circuits D13. The first sub-pixel driving circuits D11 may be used to provide driving current to the first G light-emitting unit G1, the second sub-pixel driving circuits D12 may be used to provide driving current to the first R light-emitting unit R1, and the third sub-pixel driving circuits D13 may be used to provide driving current to the first B light-emitting unit B1. The display panel may further include: a substrate, a first transparent conductive layer, a second transparent conductive layer, and a third transparent conductive layer. The first transparent conductive layer is located on one side of the substrate and may include a first transparent conductive line ITO1, which is used to connect the first G light-emitting unit G1 and the first sub-pixel driving circuit D11. The second transparent conductive layer is located on one side of the substrate and may include a second transparent conductive line ITO2, which is used to connect the first R light-emitting unit and the second sub-pixel driving circuit D12. The third transparent conductive layer is located on one side of the substrate and may include a third transparent conductive line ITO3, which is used to connect the first B light-emitting unit and the third sub-pixel driving circuit D13.

[0038] In this exemplary embodiment, the first R light-emitting unit can be a red light-emitting unit, the first G light-emitting unit can be a green light-emitting unit, and the first B light-emitting unit can be a blue light-emitting unit. This exemplary embodiment provides drive to light-emitting units of the same color through transparent conductive lines in the same conductive layer, thereby avoiding abrupt changes in the parasitic capacitance of the transparent conductive lines connected to light-emitting units of the same color in different regions, and thus avoiding the appearance of purple boundary lines between adjacent regions (A, B, C, D) in related technologies.

[0039] It should be understood that, in other exemplary embodiments, the plurality of first light-emitting units may further include light-emitting units of other colors and quantities. The display panel may also include other quantities of transparent conductive layers. Each color of light-emitting unit may correspond to one transparent conductive layer, and light-emitting units of the same color may be connected to their corresponding first pixel driving circuits via transparent conductive lines located on the same transparent conductive layer, while light-emitting units of different colors may be connected to their corresponding first pixel driving circuits via transparent conductive lines located on different transparent conductive layers.

[0040] In this exemplary embodiment, the second display area A2 may be located on one side of the first display area A1 in the row direction X. In the second display area A2, the pixel driving circuit can be compressed in the row direction so that the second display area A2 can accommodate excess first pixel driving circuitry; that is, in the second display area, the number of columns of pixel driving circuitry is greater than the number of columns of light-emitting units. It should be understood that, in order to ensure uniform display characteristics across all areas of the display panel, pixel driving circuitry in other locations of the display panel may have the same size and structure as the pixel driving circuitry in the second display area A2. It should be noted that, in this disclosure, the row direction X can be the extension direction of the gate lines in the display panel.

[0041] In this exemplary embodiment, as Figure 2 As shown, the first display area can be circular, and the first display area can be symmetrical about the dashed line AA. It should be understood that, in other exemplary embodiments, the first display area can also be rectangular, elliptical, or other shapes.

[0042] In this exemplary embodiment, the second transparent conductive layer may be located on the side of the first transparent conductive layer facing away from the substrate, and the third transparent conductive layer may be located on the side of the second transparent conductive layer facing away from the substrate. The first, second, and third transparent conductive layers may be located between the source / drain layer and the anode layer of the display panel, and an insulating layer may be disposed between adjacent transparent conductive layers. The parasitic capacitance per unit area of ​​the first, second, and third transparent conductive layers may all be the same or at least partially different.

[0043] In this exemplary embodiment, as Figure 3As shown, 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 located in the second display area. 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 along the same light-emitting unit row. In the same light-emitting unit row, two second G light-emitting units G2 distributed along the column direction may be arranged between the second R light-emitting unit R2 and the second B light-emitting unit B2. In adjacent light-emitting unit rows, light-emitting units of the same color are not located in the same column, and in two light-emitting unit rows separated by one light-emitting unit row, light-emitting units of the same color are located in the same column.

[0044] In this exemplary embodiment, as Figure 3 As shown, the display panel may include a first row of light-emitting units Lin1 and a second row of light-emitting units Lin2 located in the first display area A1. The first row of light-emitting units Lin1 and the second row of light-emitting units Lin2 are alternately arranged in the column direction. In the first row of light-emitting units Lin1, the first R light-emitting unit R1, the first G light-emitting unit G1, and the first B light-emitting unit B1 are alternately distributed in the row direction, and in the same first row of light-emitting units Lin1, two first G light-emitting units G1 distributed in the column direction are arranged between the first R light-emitting unit R1 and the first B light-emitting unit B1. In the second row of light-emitting units Lin2, the first R light-emitting unit R1 and the first B light-emitting unit B1 are alternately arranged in the row direction. Furthermore, in adjacent rows of light-emitting units, light-emitting units of the same color are located in different columns, and in two rows of light-emitting units separated by one row, light-emitting units of the same color are located in the same column. That is, compared to the second display area A2, the first display area A1 has half the number of columns of first G light-emitting units G1. Figure 3 As shown, the position where the first G light-emitting unit is not provided may only have an anode portion An. It should be understood that in other exemplary embodiments, in order to improve the light transmittance of the first display area A1, the position where the first G light-emitting unit is not provided may also not have an anode portion.

[0045] In this exemplary embodiment, among the multiple transparent conductive lines connected to the same pixel unit, the parasitic capacitance of the first transparent conductive line ITO1 can be smaller than that of the second transparent conductive line ITO2, and the parasitic capacitance of the second transparent conductive line ITO2 can be smaller than that of the third transparent conductive line ITO3. This setting can compensate for the difference in the start-up current time of the first G light-emitting unit G1 and the first R light-emitting unit R1 by the difference in the parasitic capacitance of the first transparent conductive line ITO1 and the second transparent conductive line ITO2, and can also compensate for the difference in the start-up current time of the first R light-emitting unit R1 and the first B light-emitting unit B1 by the difference in the parasitic capacitance of the second transparent conductive line ITO2 and the third transparent conductive line ITO3, thereby improving the accuracy of the colors displayed on the display panel.

[0046] It should be noted that "the same pixel unit" can be defined according to the specific distribution structure of the light-emitting units and the light mixing algorithm. In this exemplary embodiment, a pixel unit may include a first G light-emitting unit G1, a first R light-emitting unit R1, and a first B light-emitting unit B1, which can be arranged adjacent to each other. Figure 3 As shown in this 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 the dashed box.

[0047] In this exemplary embodiment, one way to achieve "the parasitic capacitance of the first transparent conductive line ITO1 is less than the parasitic capacitance of the second transparent conductive line ITO2, and the parasitic capacitance of the second transparent conductive line ITO2 is less than the parasitic capacitance of the third transparent conductive line ITO3" is that, among multiple transparent conductive lines connected to the same pixel unit, the length of the first transparent conductive line ITO1 is less than the length of the second transparent conductive line ITO2, and the length of the second transparent conductive line ITO2 is less than the length of the third transparent conductive line ITO3. Specifically, as shown... Figure 3 As shown, the first pixel driving circuit can be used to provide driving current to the first light-emitting unit L1 located in the same pixel circuit row. Specifically, in the row direction, the orthographic projection of any second sub-pixel driving circuit D12 onto the substrate can be located on the side of the orthographic projection of any first sub-pixel driving circuit D11 away from the first display area A1, and the orthographic projection of any third sub-pixel driving circuit D13 onto the substrate can be located on the side of the orthographic projection of the second sub-pixel driving circuit D12 away from the first display area A1. For example, as... Figure 3The first sub-pixel driving circuit D11 can be located in the first column of the first pixel driving circuit r1 to the fourth column of the first pixel driving circuit r4; the second sub-pixel driving circuit D12 can be located in the fifth column of the first pixel driving circuit r5 to the eighth column of the first pixel driving circuit r8; and the third sub-pixel driving circuit D13 can be located in the ninth column of the first pixel driving circuit r9 to the twelfth column of the first pixel driving circuit r12.

[0048] It should be understood that in other exemplary embodiments, there are other ways to achieve "the parasitic capacitance of the first transparent conductive line ITO1 is less than the parasitic capacitance of the second transparent conductive line ITO2, and the parasitic capacitance of the second transparent conductive line ITO2 is less than the parasitic capacitance of the third transparent conductive line ITO3". For example, the parasitic capacitance of the first transparent conductive line ITO1, the second transparent conductive line ITO2, and the third transparent conductive line ITO3 can 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 stacking direction.

[0049] In this exemplary embodiment, as Figure 3 As shown, the first transparent conductive line ITO, the second transparent conductive line ITO2, and the third transparent conductive line ITO3 can all extend along the row direction when projected onto the substrate. Figure 3 As shown, the first transparent conductive line ITO1 can be projected onto the same pixel driving circuit row on the same projection onto the substrate; the second transparent conductive line ITO2 can be projected onto the same pixel driving circuit row on the same projection onto the substrate; and the third transparent conductive line ITO3 can be projected onto the same pixel driving circuit row on the same projection onto the substrate. These transparent conductive lines mainly extend along the row direction, with a smaller or no extension in the column direction. This results in a close length difference between the two transparent conductive lines connecting adjacent columns of the same color first light-emitting units. 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 is close to the length difference between the first transparent conductive line ITO1 connected to the first pixel driving circuit r2 in the second column and the first transparent conductive line ITO1 connected to the first pixel driving circuit r3 in the third column. This allows the brightness of the first light-emitting unit to vary uniformly along the row direction. Simultaneously, this arrangement reduces the impact of different circuit layer topologies in the display panel on the capacitance of the transparent conductive lines.

[0050] In this exemplary embodiment, as Figure 3As shown, 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 on the side of the m-th column of first G light-emitting units away from the second display area; the plurality of first sub-pixel driving circuits may include n1 columns of first sub-pixel driving circuits, wherein the (m+1)th column of first sub-pixel driving circuits is located on the side of the m-th column of first sub-pixel driving circuits away from the first display area; the X-th column of first sub-pixel driving circuits is used to provide driving current to the X-th column of first G light-emitting units; the plurality of first R light-emitting units may include n2 columns of first R light-emitting units, wherein the (m+1)th column of first R light-emitting units is located on the side of the m-th column of first R light-emitting units away from the second display area. The plurality of second sub-pixel driving circuits may include n2 columns of second sub-pixel driving circuits, wherein the (m+1)th column of second sub-pixel driving circuits is located on the side of the m-th column of second sub-pixel driving circuits away from the first display area; the X-th column of second sub-pixel driving circuits is used to provide driving current to the X-th column of first R light-emitting units. The plurality of first B light-emitting units include n3 columns of first B light-emitting units, wherein the (m+1)th column of first B light-emitting units is located on the side of the m-th column of first B light-emitting units away from the second display area; the plurality of third sub-pixel driving circuits include n3 columns of third sub-pixel driving circuits, wherein the (m+1)th column of third sub-pixel driving circuits is located on the side of the m-th column of third sub-pixel driving circuits away from the first display area; the X-th column of third sub-pixel driving circuits is used to provide driving current to the X-th column of first B light-emitting units. Wherein, m and X are positive integers greater than or equal to 1, n1, n2, and n3 are positive integers greater than or equal to 2, and in this exemplary embodiment, n1, n2, and n3 can all be equal to 4. That is, the first G light-emitting unit and the first sub-pixel driving circuit D11 adopt a close-connected-only, far-connected-far-away connection method; the first R light-emitting unit and the second sub-pixel driving circuit D12 adopt a close-connected-only, far-connected-far-away connection method; the first B light-emitting unit and the third sub-pixel driving circuit D13 adopt a close-connected-only, far-connected-far-away connection method. It should be noted that the column number of each sub-pixel driving circuit in the above description is counted separately, for example, Figure 2 The first pixel driving circuit r6 in the sixth column is the second sub-pixel driving circuit in the second column, and the first pixel driving circuit r12 in the twelfth column is the third sub-pixel driving circuit in the fourth column. Similarly, the column numbers of the first G light-emitting unit, the first R light-emitting unit, and the first B light-emitting unit are also counted separately.

[0051] 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 methods, the first R light-emitting unit and the second sub-pixel driving circuit D12 may have other connection methods, and the first B light-emitting unit and the third sub-pixel driving circuit D13 may have other connection methods. For example, the first G light-emitting unit and the first sub-pixel driving circuit D11 may be connected in a near-to-far manner. For example, as... Figure 3 As shown, the first G light-emitting unit in the first column can be connected to the first sub-pixel driving circuit D11 in the fourth column, and the first G light-emitting unit in the second column can be connected to the first sub-pixel driving circuit D11 in the third column. This arrangement ensures that the lengths of the multiple first transparent conductive lines ITO1 used to connect the first sub-pixel driving circuit and the first G light-emitting unit are all equal, thus giving different first transparent conductive lines ITO1 the same parasitic capacitance. This arrangement can increase the uniformity of the brightness of the first G light-emitting units at different positions in the first display area. Similarly, the first R light-emitting unit and the second sub-pixel driving circuit D12, the first B light-emitting unit, and the third sub-pixel driving circuit D13 can also adopt the above-described near-to-far connection method.

[0052] It should be understood that in other exemplary embodiments, the first display area may further include a different number of first light-emitting units in rows and columns. Furthermore, in other exemplary embodiments, the second display area A2 may be located on one side of the first display area A1 in the column direction. Accordingly, the pixel driving circuit can be compressed in the column direction to provide a pixel driving circuit for driving the first light-emitting units in the second display area A2. Similarly, the display panel can achieve the same technical effect through the aforementioned arrangement of transparent conductive lines.

[0053] In this exemplary embodiment, as Figure 3 As shown, a row pixel driving circuit may include three regions 11, 12, and 13 in the column direction. A first transparent conductive line ITO1 may be located in region 11, a second transparent conductive line ITO2 may be located in region 12, and a third transparent conductive line ITO3 may be located in region 13. This arrangement ensures that the projections of the first transparent conductive line ITO1, the second transparent conductive line ITO2, and the third transparent conductive line ITO3 onto the substrate do not overlap, thereby avoiding mutual interference between the signals on the aforementioned transparent conductive lines. It should be understood that in other exemplary embodiments, a row pixel driving circuit may further include two regions in the column direction. The first transparent conductive line ITO1 and the third transparent conductive line ITO3 may be located in the same region, i.e., the region containing multiple first transparent conductive lines ITO1 coincides with the region containing multiple third transparent conductive lines ITO3, while the second transparent conductive line ITO2 may be located in another region. This setup allows for the integration of more transparent conductive lines within the limited column dimension of the pixel driving circuit. Furthermore, since the transparent conductive layers containing the first transparent conductive line ITO1 and the third transparent conductive line ITO3 are far apart, this setup can minimize signal interference between the first transparent conductive line ITO1 and the third transparent conductive line ITO3.

[0054] In this exemplary embodiment, as Figure 3As shown, the area of ​​the first G light-emitting unit projected onto the substrate can be smaller than the area of ​​the second G light-emitting unit projected onto the substrate; the area of ​​the first R light-emitting unit projected onto the substrate can be smaller than the area of ​​the second R light-emitting unit projected onto the substrate; and the area of ​​the first B light-emitting unit projected onto the substrate can be smaller than the area of ​​the second B light-emitting unit projected onto the substrate. This arrangement can increase the light transmittance of the first display area A1.

[0055] In this exemplary embodiment, as Figure 3 As shown, the location of the anode portion An where the first G light-emitting unit is not provided can 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 lifespan of the first light-emitting unit in the first display area.

[0056] In this exemplary embodiment, as Figure 3 As shown, the first pixel driving circuits in two adjacent columns can be arranged adjacently, that is, no pixel driving circuit is arranged between two adjacent columns of the first pixel driving circuits. It should be understood that in other exemplary embodiments, other pixel driving circuits may also be arranged between two adjacent columns of the first pixel driving circuits, and these other pixel driving circuits can be used to provide driving current to the light-emitting unit located in the second display area A2.

[0057] In this exemplary embodiment, as Figure 2 , 3 As shown, the display panel may include a structure symmetrical along the dashed line AA.

[0058] like Figure 4 The diagram shown is a structural schematic of another exemplary embodiment of the display panel of this disclosure. The arrangement of the light-emitting units in the second display area A2 is the same as that in the first display area. That is, both the second display area A2 and the first display area A1 adopt an RGB pixel structure arrangement. This setting can make the pixel density of the second display area A2 and the first display area A1 the same, thereby improving the uniformity of the display panel.

[0059] like Figure 5The diagram shown is a schematic representation of the structure of the first display area in another exemplary embodiment of the display panel of this disclosure. In the first display area A1, a 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. 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 arranged in a triangular pattern. 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. Light-emitting units of the same color are located in the same row, and light-emitting units of different colors are located in different rows. In adjacent light-emitting unit columns, light-emitting units of the same color are located in different rows. In two light-emitting unit columns separated by one light-emitting unit column, light-emitting units of the same color are located in the same row.

[0060] like Figure 3 As shown, because some anode portions An in the first display area A1 do not have first G light-emitting units, the number of columns of light-emitting units in the first display area is reduced to 3 / 4 of the original. Correspondingly, the positions in the second display area A2 originally used to house pixel driving circuits to drive the first G light-emitting units can form virtual pixel areas. For example... Figure 6 The diagram shown is a structural schematic of another exemplary embodiment of the display panel disclosed herein. The display panel may further include a virtual pixel area A4 and a virtual sub-pixel driving unit D4 located within a portion of the virtual pixel area A4. The virtual pixel area A4 may be located on the 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 and may only include pixel driving circuitry. The active layer at the location of the virtual sub-pixel driving unit D4 may form the edge of the active layer of the normal display area (the display area other than the first display area). This configuration ensures the stability of the threshold voltage of the driving transistors in the normal display area.

[0061] In this exemplary embodiment, as Figure 6As shown, the display panel may further include a first data line Da1 located in the second display area A2, which can be used to provide data signals to the first pixel driving circuit. The display panel also 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 on one side of the first display area A1 in the column direction Y, and the third data line Da3 can be used to provide data signals to the third pixel driving circuit D3. The display panel may also include a connecting line Da4, which can connect the first data line Da1 and the third data line Da3. At least a portion of the connecting line Da4 may be located in the virtual pixel area A4, and the orthographic projection of the connecting line Da4 onto the substrate may not intersect with the orthographic projection of the virtual sub-pixel driving unit D4 onto the substrate. That is, a portion of the virtual pixel area A4 can also be used for data cable winding. Since the virtual pixel area A4 is close to the first display area A1, this setting can reduce the length of the data cable winding, thereby reducing the impedance load (RC loading) of the data cable.

[0062] This exemplary embodiment also provides a display device including the display panel and sensor described above, wherein the sensor is directly opposite a first display area of ​​the display panel. The sensor may be an optical sensor, such as a camera. The display device may be a mobile phone, tablet computer, or other display device.

[0063] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims.

[0064] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is defined only by the appended claims.

Claims

1. A display panel, characterized by, The display panel comprises a first display area, a second display area, a plurality of first light emitting units, a plurality of first pixel driving circuits, the second display area surrounds at least part of the edge of the first display area, the first light emitting unit is located in the first display area, the first pixel driving circuit is located in the second display area, the first pixel driving circuit is used for providing driving current to the first light emitting unit, a plurality of the first light emitting units comprise light emitting units of multiple colors, under the same gray scale, light emitting units of different colors have different start-up current time, and the display panel further comprises: a substrate substrate; a plurality of transparent conductive layers are located on one side of the substrate substrate, one layer of transparent conductive layer corresponds to one color of light emitting unit, the light emitting unit of the same color is connected with the corresponding first pixel driving circuit through the transparent conductive line located in the same transparent conductive layer, and the light emitting unit of different colors is connected with the corresponding first pixel driving circuit through the transparent conductive line located in different transparent conductive layers; a plurality of the first light emitting units comprise first R light emitting units, first G light emitting units and first B light emitting units, and a plurality of the transparent conductive layers comprise: a first transparent conductive layer located on one side of the substrate substrate, the first transparent conductive layer comprises a first transparent conductive line, and the first transparent conductive line is used for connecting the first G light emitting unit and the corresponding first pixel driving circuit; a second transparent conductive layer located on one side of the substrate substrate, the second transparent conductive layer comprises a second transparent conductive line, and the second transparent conductive line is used for connecting the first R light emitting unit and the corresponding first pixel driving circuit; a third transparent conductive layer located on one side of the substrate substrate, the third transparent conductive layer comprises a third transparent conductive line, and the third transparent conductive line is used for connecting the first B light emitting unit and the corresponding first pixel driving circuit; The display panel further comprises a plurality of pixel units located in the first display area, and the pixel unit comprises the first G light emitting unit, the first R light emitting unit and the first B light emitting unit. Among the plurality of transparent conductive lines connected with the same pixel unit, the parasitic capacitance of the first transparent conductive line is smaller than the parasitic capacitance of the second transparent conductive line, and the parasitic capacitance of the second transparent conductive line is smaller than the parasitic capacitance of the third transparent conductive line. Or, among the plurality of transparent conductive lines connected with the same pixel unit, the length of the first transparent conductive line is smaller than the length of the second transparent conductive line, and the length of the second transparent conductive line is smaller than the length of the third transparent conductive line.

2. The display panel of claim 1, wherein, The second display area is located on one side of the first display area in the row direction, the first pixel driving circuit is used for providing driving current to the first light emitting unit located in the same pixel circuit row, and the first transparent conductive line, the second transparent conductive line and the third transparent conductive line all extend along the row direction in the substrate substrate orthographic projection. The first pixel driving circuit includes 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, the first sub-pixel driving circuit is configured to provide driving current to the first G light emitting unit through the first transparent conductive line, the second sub-pixel driving circuit is configured to provide driving current to the first R light emitting unit through the second transparent conductive line, and the third sub-pixel driving circuit is configured to provide driving current to the first B light emitting unit through the third transparent conductive line. In the row direction, any second sub-pixel driving circuit is located on the side of the substrate orthogonal projection away from the first display area, and any third sub-pixel driving circuit is located on the side of the substrate orthogonal projection away from the first display area.

3. The display panel of claim 2, wherein, 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 on the side of the mth column of first G light emitting units away from the second display area. The plurality of first sub-pixel driving circuits includes n1 columns of first sub-pixel driving circuits, wherein the (m+1)th column of first sub-pixel driving circuits is located on the side of the mth column of first sub-pixel driving circuits away from the first display area. The Xth column of first sub-pixel driving circuits is configured to provide driving current to the Xth column of first G light emitting units. The plurality of first R light emitting units includes n2 columns of first R light emitting units, wherein the (m+1)th column of first R light emitting units is located on the side of the mth column of first R light emitting units away from the second display area. The plurality of second sub-pixel driving circuits includes n2 columns of second sub-pixel driving circuits, wherein the (m+1)th column of second sub-pixel driving circuits is located on the side of the mth column of second sub-pixel driving circuits away from the first display area. The Xth column of second sub-pixel driving circuits is configured to provide driving current to the Xth column of first R light emitting units. The plurality of first B light emitting units includes n3 columns of first B light emitting units, wherein the (m+1)th column of first B light emitting units is located on the side of the mth column of first B light emitting units away from the second display area. The plurality of third sub-pixel driving circuits includes n3 columns of third sub-pixel driving circuits, wherein the (m+1)th column of third sub-pixel driving circuits is located on the side of the mth column of third sub-pixel driving circuits away from the first display area. The Xth column of third sub-pixel driving circuits is configured to provide driving current to the Xth column of first B light emitting units. Wherein, m and X are positive integers greater than or equal to 1, and n1, n2 and n3 are positive integers greater than or equal to 2.

4. The display panel of claim 2, wherein, The first transparent conductive line is located on the same pixel driving circuit row in the substrate orthogonal projection; The second transparent conductive line is located on the same pixel driving circuit row in the substrate orthogonal projection; The third transparent conductive line is located on the same pixel driving circuit row in the substrate orthogonal projection.

5. The display panel of claim 4, wherein, The first transparent conductive line and the third transparent conductive line are formed in the first region, and the second transparent conductive line is formed in the second region.

6. The display panel of claim 1, wherein, The display panel comprises a first light emitting unit row and a second light emitting unit row in the first display area, and the first light emitting unit row and the second light emitting unit row are arranged alternately in the column direction. In the first light emitting unit row, the first R light emitting unit, the first G light emitting unit and the first B light emitting unit are arranged alternately in the row direction, and in the same first light emitting unit row, two first G light emitting units are arranged in the column direction 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 unit and the first B light emitting unit are arranged alternately in the row direction. In adjacent light emitting unit rows, the light emitting units of the same color are arranged in different columns, and in two light emitting unit rows spaced by one light emitting unit row, the light emitting units of the same color are arranged in the same column.

7. The display panel of claim 1, wherein, In the first display area, the first R light emitting unit, the first G light emitting unit and the first B light emitting unit are arranged alternately in the column direction, the light emitting units of the same color are arranged in the same row, the light emitting units of different colors are arranged in different rows, in adjacent light emitting unit columns, the light emitting units of the same color are arranged in different rows, and in two light emitting unit columns spaced by one light emitting unit column, the light emitting units of the same color are arranged in the same row.

8. The display panel of claim 1, 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 area. In the second display area, the second R light emitting unit, the second G light emitting unit and the second B light emitting unit are arranged alternately in the same light emitting unit row, and in the same light emitting unit row, two second G light emitting units are arranged in the column direction 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 arranged in the same column, and in two light emitting unit rows spaced by one light emitting unit row, the light emitting units of the same color are arranged in the same column.

9. The display panel of claim 6, 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 area. 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.

10. The display panel of claim 1, wherein, The second transparent conductive layer is located on the side of the first transparent conductive layer away from the substrate, and the third transparent conductive layer is located on the side of the second transparent conductive layer away from the substrate.

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

12. The display panel of claim 11, wherein, The display panel further comprises a first data line in the second display area, and the first data line is used for providing a data signal to the first pixel driving circuit. The display panel further comprises a third display area, and a third pixel driving circuit and a third data line in the third display area, the third display area is located at one side of the first display area in the column direction, and the third data line is configured to provide a data signal to the third pixel driving circuit. The display panel further comprises a connection line connected between the first data line and the third data line, and the connection line is at least partially located in the virtual pixel area.

13. The display panel of claim 1, wherein, 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.

14. The display panel of claim 9, wherein, The density of the light emitting units in the first display area is equal to the density of the light emitting units in the second display area. The first R light emitting unit is smaller than the second R light emitting unit in the substrate substrate orthographic projection, the first G light emitting unit is smaller than the second G light emitting unit in the substrate substrate orthographic projection, and the first B light emitting unit is smaller than the second B light emitting unit in the substrate substrate orthographic projection.

15. A display device comprising: The display panel and a sensor device, the sensor device is opposite to the first display area of the display panel.

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