CN113327517B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN113327517B CN113327517B CN202110612759.5A CN202110612759A CN113327517B CN 113327517 B CN113327517 B CN 113327517B CN 202110612759 A CN202110612759 A CN 202110612759A CN 113327517 B CN113327517 B CN 113327517B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/302—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements characterised by the form or geometrical disposition of the individual elements
Abstract
The invention discloses a display panel and a display device. The display panel comprises a first display area and a second display area, wherein the light transmittance of the first display area is less than that of the second display area; the first display area is at least partially arranged around the second display area; the first display area is provided with a first pixel unit and a first signal line; the first signal line comprises a first sub-signal line penetrating through the second display area along the row direction of the first pixel unit; the first signal line comprises a first part and a second part which are arranged on two sides of the second display area, and a first lead which is arranged on the second display area, wherein two ends of the first lead are respectively connected with the first part and the second part of the same first signal line, so that the mura phenomenon on two sides of the second display area can be improved, the display effect of the display panel is improved, and the additional arrangement of winding is avoided.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display panel and a display device.
Background
The current display panels are moving towards full-screen. In the full-screen, a transparent display area with higher light transmittance is required to be arranged in the display area for placing a camera and other structures. Signal lines may be provided extending within the regular display area to provide signals to the pixel circuits. And the two sides of the transparent display area are disconnected, so that the arrangement of signal lines in the transparent display area is reduced, the shielding of the transparent display area is reduced, and the light transmittance of the transparent display area is ensured. When the lengths of the signal lines on the two sides of the transparent display area are not equal, the loads of the signal lines on the two sides of the transparent display area are not equal, so that the signals provided by the signal lines on the two sides of the transparent display area to the pixel circuit are different, and the mura phenomenon of the display panel is caused. In the prior art, a transition area can be arranged between the transparent display area and the conventional display area, so that signal lines are wound in the transition area, and the signal lines on two sides of the transparent display area are connected. At the moment, the area of the transition region is larger, so that the area of a conventional display region is reduced, and the display effect of the display panel is also reduced.
Disclosure of Invention
The invention provides a display panel and a display device, which aim to improve the display effect of the display panel on the basis of not increasing the area of a transition region.
In a first aspect, an embodiment of the present invention provides a display panel, including a first display area and a second display area, where light transmittance of the first display area is smaller than that of the second display area; the first display area is at least partially arranged around the second display area;
the first display area is provided with a first pixel unit and a first signal line; the first signal line comprises a first sub-signal line penetrating through the second display area along the row direction of the first pixel unit; the first sub-signal line comprises a first part and a second part which are arranged on two sides of the second display area, and a first lead arranged in the second display area, wherein two ends of the first lead are respectively connected with the first part and the second part of the first sub-signal line.
Optionally, the second display area includes a transition area and a transparent display area, and the transition area is disposed around the transparent display area; the first conductive line comprises a first sub conductive line, a second sub conductive line, and a third sub conductive line; the first sub conductive line and the third sub conductive line are respectively arranged in transition regions at two sides of the transparent display region along a row direction of the first pixel unit, the second sub conductive line is arranged in the transparent display region, a first end of the second sub conductive line is connected with the first part through the first sub conductive line, and a second end of the second sub conductive line is connected with the second part through the third sub conductive line.
Optionally, the second sub-conductive line is a transparent conductive line.
Optionally, the transition region is provided with a pixel circuit, and the transparent display region is provided with a light emitting unit; the pixel circuit is connected with the light-emitting unit through a first transparent conducting wire; the second sub-conductive line and the first transparent conductive line are arranged in the same layer.
Optionally, the transparent display area is provided with a plurality of light emitting device areas, each light emitting device area comprises at least two light emitting units, and the light emitting units in the light emitting device areas are connected through a second transparent conductive wire; the second sub conductive line and the second transparent conductive line are arranged on the same layer and are not in contact with each other.
Optionally, the first conductive line is disposed between different light emitting device regions.
Optionally, the first pixel unit includes a data writing transistor, and the first signal line is connected to a gate of the data writing transistor.
Optionally, the first display area is further provided with a second signal line, and an extending direction of the second signal line is the same as an extending direction of the first signal line; the second signal line comprises a second sub-signal line penetrating through the second display area along the row direction of the first pixel unit; the second sub signal line comprises a fifth part and a sixth part which are arranged at two sides of the second display area, and a second conductive line arranged in the second display area, wherein two ends of the second conductive line are respectively connected with the fifth part and the sixth part of the same second sub signal line.
Optionally, the first pixel unit includes an initialization transistor, and the second signal line is connected to a gate of the initialization transistor; in the adjacent pixel rows of the first pixel unit, the first signal line of the upper row is connected with the second signal line of the lower row.
Optionally, the first conductive line has a wave shape.
In a second aspect, an embodiment of the present invention further provides a display device, including the display panel provided in any embodiment of the first aspect.
According to the technical scheme of the embodiment of the invention, the first conducting wire is arranged in the second display area and is connected with the first part and the second part of the same first sub-signal wire at two sides of the second display area through the first conducting wire, so that the same first sub-signal wire at two sides of the second display area is electrically connected and has the same load, and therefore, the driving signals provided by the first sub-signal wire for the first pixel units at two sides of the second display area are the same, the mura phenomenon at two sides of the second display area is improved, and the display effect of the display panel is improved. Meanwhile, the first part of the same first sub-signal line can be prevented from being connected with the second part in a winding mode, the winding area of the second display area for arranging the first sub-signal line is prevented from being additionally increased, and the display effect of the display panel is guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of a display panel provided in the prior art;
FIG. 2 is a partial schematic view of a display panel provided in the prior art;
fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 7 is a schematic cross-sectional view illustrating a display panel according to an embodiment of the invention;
fig. 8 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 9 is a schematic cross-sectional view illustrating another display panel according to an embodiment of the invention;
fig. 10 is a schematic structural diagram of a pixel circuit according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 13 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic structural diagram of a display panel provided in the prior art. As shown in fig. 1, the display panel includes a normal display area 101, a transition area 102, and a transparent display area 103, the transition area 102 being disposed around the transparent display area 103, and the normal display area 101 being disposed around the transition area 102. Since the regular display area 101 surrounds the transparent display area 103, the display panel may form an off-shore full screen display panel. The display panel is also provided with pixel circuits and signal lines 104 for supplying signals to the pixel circuits. As shown in fig. 1, the signal lines 104 may extend in a row direction X' of the display panel. When the signal lines 104 extend to the transparent display area 103, the signal lines 104 can be disconnected at two sides of the transparent display area 103, so that the arrangement of the signal lines 104 in the transparent display area 103 is reduced, and the light transmittance of the transparent display area 103 is ensured. When the position of the transparent display area 103 in the display panel is at a non-intermediate position along the row direction X' of the display panel, the lengths of the signal lines 104 at the two sides of the transparent display area 103 are not equal, so that the numbers of the pixel circuits connected to the signal lines 104 at the two sides of the transparent display area 103 are different, that is, the loads of the signal lines 104 at the two sides of the transparent display area 103 are not equal, which causes the signals provided by the signal lines 104 to the pixel circuits at the two sides of the transparent display area 103 to have a difference, and further causes the pixel circuits at the two sides of the transparent display area 103 to drive the light emitting devices to emit light, the light emitting luminance of the light emitting devices has a difference, and the display panel has a mura phenomenon. Fig. 2 is a partial schematic view of a display panel provided in the prior art. As shown in fig. 2, the display panel further includes a compensation transition area 105, and along the row direction X' of the display panel, the signal lines 104 located at two sides of the transparent display area 103 are connected in the compensation transition area 105 by winding, so that the loads on the signal lines 104 at two sides of the transparent display area 103 are kept consistent, and the mura phenomenon of the display panel is improved. However, the compensation transition area 105 is additionally added on the basis of the transition area 102, generally, the width of the additionally added compensation transition area 105 in the display panel along the column direction Y 'of the display panel is 8.568mm, and compared with the width of the transition area 102 along the column direction Y' of the display panel being 3.78mm, the area of the whole transition area in the display panel is increased, the area of the conventional display area 101 is reduced, and the display effect of the display panel is reduced.
In view of the foregoing technical problems, embodiments of the present invention provide a display panel. Fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present invention. As shown in fig. 3, the display panel includes a first display region 110 and a second display region 120, and the light transmittance of the first display region 110 is less than that of the second display region 120; the first display area 110 is disposed at least partially around the second display area 120; the first display region 110 is provided with a first pixel cell P1 and a first signal line L1; the first signal line L1 includes a first sub-signal line L1' penetrating the second display area 120 in the row direction X of the first pixel unit; the first sub-signal line L1 'includes a first portion L11 and a second portion L12 disposed at both sides of the second display area 120, and a first conductive line L2 disposed at the second display area 120, and both ends of the first conductive line L2 are connected to the first portion L11 and the second portion L12 of the same first sub-signal line L1', respectively.
In particular, the display panel may be a full screen display panel. The first display area 110 may be a conventional display area of a display panel or referred to as a main screen of the display panel. The second display area 120 may be a sub-screen of the display panel. The pixel density of the second display area 120 can be set to be relatively low so as to ensure the light transmittance of the second display area 120, so that the light transmittance of the second display area 120 is greater than that of the first display area 110, and therefore, the photosensitive element can be arranged at the position opposite to the second display area 120, so that the lower-screen photosensitive effect of the display panel is realized, and the full-screen display of the display panel can be realized. The photosensitive element may be a camera, and may implement the off-screen image capture of the display panel.
In addition, the first display area 110 is provided with n rows of the first pixel units P1 and n first signal lines L1, the first pixel unit P1 may include a first pixel circuit and a first light emitting unit, both of which are disposed in the first display area 110, and the first light emitting unit may be disposed to be stacked with the first pixel circuit. The first pixel circuit is connected with the first light-emitting unit and used for providing a driving signal for the first light-emitting unit and driving the first light-emitting unit to emit light. The second display region 120 may be provided with m rows of the second pixel units P2, and each of the first signal lines L1 is connected to the first pixel unit P1 and the second pixel unit P2 positioned in the same row for supplying a driving signal to the first pixel unit P1 and the second pixel unit P2 positioned in the same row. The light transmittance of the first display region 110 is less than that of the second display region 120, the pixel density of the second display region 120 may be set to be less than that of the first display region 110, and for example, the number of rows of the second pixel cells P2 in the second display region 120 may be set to be less than that of the first pixel cells P1. The first sub-signal line L1' is divided into a first portion L11 and a second portion L12 at the second display area 120, and a first conductive line L2 is disposed at the second display area 120. The first portion L11 and the first conductive line L2 of the same first sub-signal line L1' correspond to the second portion L12. Fig. 3 exemplarily shows that the 6 first sub-signal lines L1' include a first portion L11, a first conductive line L2, and a second portion L12. Both ends of the first wire L2 are connected to the first portion L11 and the second portion L12 of the same first sub-signal line L1 ', respectively, to realize the integral connection of the first sub-signal line L1'. Fig. 3 exemplarily shows that the second display area 120 is provided with 6 first conductive lines L2, and the first portion L11 and the second portion L12 of each of the first sub-signal lines L1' are connected through one first conductive line L2, respectively. At this time, the first portion L11 and the second portion L12 of the first sub-signal line L1 'on two sides of the second display area 120 can be electrically connected to have the same load, so that the driving signals provided by the first sub-signal line L1' for the first pixel units P1 in the same row on two sides of the second display area 120 are the same, the mura phenomenon on two sides of the second display area 120 is improved, and the display effect of the display panel is improved. Meanwhile, the first part L11 of the first sub-signal line L1 'can be prevented from being connected with the second part L12 in a winding manner, the additional increase of the area of the second display area 120 for arranging the winding of the first sub-signal line L1' is avoided, and the display effect of the display panel is ensured.
It should be noted that, when the number of rows of the second pixel units P2 is smaller than the number of rows of the first pixel units P1 on both sides of the second display area 120, the number of the first sub-signal lines L1 ' required by the second pixel unit P2 in the second display area 120 is smaller than the number of the first sub-signal lines L1 ' required by the first pixel unit P1 corresponding to the second pixel unit P2, and at this time, the first portion L11 and the second portion L12 in the first sub-signal lines L1 ' are connected to the second pixel unit P2 for providing the driving signal to the second pixel unit P2. The first portion L11 and the second portion L12 of the remaining first sub-signal line L1 'extend to between adjacent pixel rows of the second pixel unit in the second display area 120 and are electrically connected through the first wire L2, so that the first sub-signal line L1' provides the same driving signals for the first pixel unit P1 and the second pixel unit P2 in the same row at two sides of the second display area 120, thereby improving the mura phenomenon at two sides of the transparent display area 122 and improving the display effect of the display panel. Meanwhile, the area of the second display area can be prevented from being additionally increased, and the display effect of the display panel is ensured. Illustratively, as shown in fig. 3, three of the 6 first sub-signal lines L1 'provide driving circuits for the second pixel unit P2, and the first portion L11 and the second portion L12 of the other 3 first sub-signal lines L1' are connected by a first wire L2.
It should be noted that the first conducting wire L2 may be disposed at the same layer as the first sub-signal wire L1 ', and the first conducting wire L2 and the first sub-signal wire L1' may be contacted to achieve electrical connection. The first conductive line L2 may also be disposed in a different layer from the first sub-signal line L1 ', and at this time, the first conductive line L2 may be connected to the first sub-signal line L1' through a via hole.
In addition, fig. 3 shows, by way of example only, that the display panel includes one second display region 120. In other embodiments, the display panel may further include a plurality of second display regions 120, where the first sub-signal line L1 ' is divided into a plurality of portions by the plurality of second display regions 120, and a first conducting line L2 is respectively disposed in each of the second display regions 120 and used for connecting a plurality of portions of the first sub-signal line L1 ', so as to electrically connect portions of the first sub-signal line L1 ' on two sides of the second display regions 120, improve a mura phenomenon of the display panel, and improve a display effect of the display panel. Exemplarily, fig. 4 is a schematic structural diagram of another display panel according to an embodiment of the present invention, as shown in fig. 4, the display panel includes two second display regions 120, the first sub-signal line L1' is divided into three parts by the two second display regions 120, and the two second display regions 120 are each provided with a first conductive line L2. Three portions of the same first sub-signal line L1 'are respectively connected by a first conductive line L2, wherein fig. 4 exemplarily shows that three portions of 6 first sub-signal lines L1' are respectively connected by a first conductive line L2, so that three portions of the same first sub-signal line L1 'are electrically connected and have the same load, and thus, different portions of the first sub-signal line L1' are the same as the driving signals provided by the first pixel unit P1 and the second pixel unit P2 in the same row, thereby improving the mura phenomenon at both sides of the second display area 120 and improving the display effect of the display panel. Meanwhile, the winding connection of the three parts of the first sub-signal line L1' can be avoided, the additional increase of the area of the second display area 120 for setting the winding is avoided, and the display effect of the display panel is ensured.
Fig. 5 is a schematic structural diagram of another display panel according to an embodiment of the present invention, as shown in fig. 5, the second display area 120 includes a transition area 121 and a transparent display area 122, and the transition area 121 is disposed around the transparent display area 122; the first conductive line L2 includes a first sub conductive line L21, a second sub conductive line L22, and a third sub conductive line L23; along the row direction X of the first pixel unit, the first sub conductive line L21 and the third sub conductive line L23 are respectively disposed at the transition region 121 at both sides of the transparent display region 122, the second sub conductive line L22 is disposed at the transparent display region 122, a first end of the second sub conductive line L22 is connected to the first portion L11 through the first sub conductive line L21, and a second end of the second sub conductive line L22 is connected to the second portion L12 through the third sub conductive line L23.
Specifically, the second display region 120 includes a second pixel unit P2, and the second pixel unit P2 may include a second pixel circuit and a second light emitting unit. The second pixel circuit may be disposed in the transition region 121, and the second light emitting unit may be disposed in the transparent display region 121 for ensuring light transmittance of the transparent display region 121. The first sub conductive line L21 and the third sub conductive line L23 are disposed at the transition region 121, and the second pixel circuit is disposed at the transition region 121, so the first sub conductive line L21 and the third sub conductive line L23 may be formed in the same process as the first portion L11 and the second portion L12 of the first sub signal line L1 'and connected to the first portion L11 and the second portion L12 of the first sub signal line L1' of the same row, which is equivalent to that the first portion L11 and the second portion L12 may extend to the transition region 121 for providing a driving signal to the second pixel circuit disposed at the transition region 121. Meanwhile, the second sub conductive line L22 is connected to the first sub conductive line L11 and the third sub conductive line L23, so that the driving signals provided by the first pixel unit P1 and the second pixel unit P2 of the first sub signal line L1' in the same row on both sides of the second display area 120 are the same, the mura phenomenon on both sides of the transparent display area 122 is improved, and the display effect of the display panel is improved. Meanwhile, the first sub conductive line L21 and the third sub conductive line L23 can be prevented from being connected in a winding manner, the area of the transition region 121 is prevented from being additionally increased for arranging the windings of the first sub conductive line L21 and the third sub conductive line L23, and the display effect of the display panel is ensured.
On the basis of the technical scheme, the second sub conductive line is a transparent conductive line.
Specifically, the second sub conductive lines are disposed in the transparent display region, and by disposing the second sub conductive lines as transparent conductive lines, a material of the second sub conductive lines may be Indium Tin Oxide (ITO), for example. The light transmittance of the second sub conductive line L22 can be ensured, and thus the light transmittance of the transparent display region can be ensured.
Fig. 6 is a schematic structural diagram of another display panel according to an embodiment of the present invention, and fig. 7 is a schematic cross-sectional structural diagram of a display panel according to an embodiment of the present invention. As shown in fig. 6 and 7, the transition area 121 is provided with the pixel circuit 1211, and the transparent display area 122 is provided with the light emitting unit 1221; the pixel circuit 1211 is connected to the light emitting unit 1221 through a first transparent conductive line L3; the second sub conductive line L22 is disposed at the same layer as the first transparent conductive line L3.
Specifically, the pixel circuit 1211 disposed in the transition area 121 is a second pixel circuit included in the second pixel unit P2, and the light emitting unit 1221 disposed in the transparent display area 122 is a second light emitting unit included in the second pixel unit P2. The transmittance of the second pixel circuit 1211 is relatively low, and the transmittance of the transparent display area 122 can be ensured by reducing the density of the metal layer of the transparent display area 122 by disposing the pixel circuit driving the second light emitting unit 1221 in the transparent display area 122 in the transition area 121. The transparent display area 122 is provided with a second light emitting unit 1221, and the second light emitting unit 1221 is connected to the second pixel circuit 1211 of the transition area 121 through the first transparent conductive line L3, so that the second pixel circuit 1211 of the transition area 121 can provide a driving current for the second light emitting unit 1221 of the transparent display area 122 to drive the second light emitting unit 1221 to emit light, thereby realizing the display of the transparent display area 122 and ensuring the light transmittance of the transparent display area 122. With continued reference to fig. 7, the display panel includes a substrate B1, and the light emitting unit 1221 includes an Anode disposed on the substrate B1. The first transparent conductive line L3 is disposed on one side of the Anode electrode close to the substrate B1, and the second pixel circuits 1211 of the transition region 121 is connected to the second light emitting unit 1221 of the transparent display region 122. With continued reference to fig. 7, an insulating layer may be included between the first transparent conductive line L3 and the Anode electrode, and the first transparent conductive line L3 and the Anode electrode may be connected through a via hole. The material of the first transparent conductive line L3 has a relatively high transmittance, and can ensure the transmittance of the transparent display region 122. When the second sub conductive line L22 and the first transparent conductive line L3 are disposed at the same layer, the second sub conductive line L22 and the first transparent conductive line L3 may be formed in the same process, which not only avoids additional process steps for forming the second sub conductive line L22, but also ensures the transmittance of the second sub conductive line L22, thereby ensuring the transmittance of the transparent display area 121. In addition, the first transparent conductive line L3 may extend in the first pixel cell row direction X, i.e., the extending direction of the first transparent conductive line L3 is the same as that of the second sub conductive line L22, so that a short circuit phenomenon at the intersection of the second sub conductive line L22 and the first transparent conductive line L3 may be prevented.
It should be noted that the transition region 121 is further provided with a complete second pixel unit P2 (not shown in fig. 6), that is, the transition region 121 is provided with a second light emitting unit and a second pixel circuit corresponding to the second light emitting unit, for implementing the display of the transition region 121. At this time, the transition area 121 is not only provided with the second pixel unit P2 used by the transition area 121 for displaying, but also provided with the second pixel circuit 1211 corresponding to the second light-emitting unit 1221 of the transparent display area 122, so that the pixel density of the transition area 121 and the transparent display area 122 can be set to be smaller than that of the first display area 110, so as to ensure that the space requirement for arranging the pixel circuit in the transition area 121 is met.
Fig. 8 is a schematic structural diagram of another display panel according to an embodiment of the present invention, and fig. 9 is a schematic cross-sectional structural diagram of another display panel according to an embodiment of the present invention. As shown in fig. 8 and 9, the transparent display area 122 is provided with a plurality of light emitting device regions a including at least two light emitting cells 1221, and the light emitting cells 1221 within the light emitting device regions a are connected by a second transparent conductive line L4; the second sub conductive line L22 is disposed at the same layer as the second transparent conductive line L4, and does not contact.
Specifically, the light emitting unit 1221 in the light emitting device region a is a second light emitting unit, and the light emitting units 1221 in the same light emitting device region a may be light emitting units having the same emission color. By disposing the light emitting cells 1221 in the light emitting device region a to be connected through the second transparent conductive line L4, the plurality of light emitting cells 1221 in the light emitting device region a can be made to supply a driving current through one second pixel circuit 1211, so that the number of second pixel circuits 1211 disposed in the transition region 121 can be reduced, which is advantageous for reducing the area of the transition region 121, or improving the pixel density of the second display region 120. Exemplarily, referring to fig. 8, 4 light emitting cells 1221 are disposed in the light emitting device region a, and the 4 light emitting cells 1221 are arranged in two rows and two columns. When the anodes enode of the 4 light emitting units 1221 are connected through the second transparent conductive line L4, it is possible to realize that one second pixel circuit 1211 drives the 4 light emitting units 1221 to emit light. Since the 4 light emitting units 1221 are arranged in two rows and two columns, only one row of the second pixel circuits 1211 is needed for providing the driving signals for the two rows of the light emitting units 1221, and only one corresponding first sub-signal line L1 ' is needed, so only one half of the first sub-signal lines L1 ' is connected to the second pixel circuit of the transition region 121, and the other half of the first sub-signal lines L1 ' extends to the transparent display region 122 through the gap between the adjacent rows of the second pixel circuits and is connected through the second sub-conductive line L22. The second transparent conductive line L4 may be disposed between the first transparent conductive line L3 and the Anode electrode of the light emitting unit 1221, and the light transmittance of the second transparent conductive line L4 may be relatively high, which may ensure the light transmittance of the transparent display region 122. When the second sub conductive line L22 and the second transparent conductive line L4 are disposed in the same layer, the second sub conductive line L22 and the second transparent conductive line L4 may be formed in the same process, which not only avoids additional process steps for forming the second sub conductive line L22, but also ensures the transmittance of the second sub conductive line L22, thereby ensuring the transmittance of the transparent display area 121.
Illustratively, the second sub-conductive lines are disposed between different light emitting device regions.
Specifically, when the plurality of light emitting cells are connected by the second transparent conductive line in the light emitting device region, the extending direction of the second transparent conductive line may include a row direction along the first pixel cell and may further include a column direction perpendicular to the first pixel cell. The second sub conductive wires are arranged between different light emitting device regions, so that the second sub conductive wires can be prevented from being intersected with the second transparent conductive wires on the basis that the second sub conductive wires and the second transparent conductive wires are on the same layer, and the phenomenon of short circuit between the second sub conductive wires and the second transparent conductive wires can be avoided.
On the basis of the above technical solutions, fig. 10 is a schematic structural diagram of a pixel circuit according to an embodiment of the present invention. As shown in fig. 10, the first pixel unit includes a data writing transistor T1, and the first signal line is connected to the gate of the data writing transistor T1.
Specifically, the first pixel unit includes a first pixel circuit, the second pixel unit includes a second pixel circuit, and the first pixel circuit and the second pixel circuit may have the same pixel circuit structure. Fig. 10 exemplarily shows that the pixel circuit includes 7T 1C. The pixel circuit working process comprises an initialization phase, a data writing phase and a light emitting phase. In the data writing phase, the first signal line controls the data writing transistor T1 to be turned on, and the data writing transistor T1 provides a data voltage to write into the gate of the driving transistor T2, thereby implementing data writing. In the light emitting stage, the driving transistor T2 forms a driving current according to the written data voltage, and drives the light emitting cell connected thereto to emit light. The first signal lines are connected to a row of pixel circuits, and when the first signal lines control the data writing transistor T1 to be turned on in the data writing stage, the number of the pixel circuits connected to the first signal lines directly affects the load of the first signal lines, so that the first signals provided by the first signal lines corresponding to different pixel circuits have differences, which affect the on-state of the data writing transistor T1, and further affect the writing of the data voltage to the gate of the driving transistor T2 through the data writing transistor T1. The first part and the second part of the same first sub-signal line on two sides of the second display area are connected through the first lead, so that the difference of the first signals corresponding to the pixel circuits on the same row can be reduced, the consistency of the data voltage written by different pixel circuits is improved, the mura phenomenon of the display panel is reduced, and the display effect of the display panel is improved.
Fig. 11 is a schematic structural view of another display panel according to an embodiment of the invention, and as shown in fig. 11, the first display area 110 is further provided with a second signal line L5, and an extending direction of the second signal line L5 is the same as an extending direction of the first signal line L1; the second signal line L5 includes a second sub-signal line L5' penetrating the second display area 120 in the row direction X of the first pixel unit; the second sub-signal line L5 'includes a fifth portion L51 and a sixth portion L52 disposed at both sides of the second display area 120, and a second conductive line L6 disposed at the second display area 120, and both ends of the second conductive line L6 are connected to the fifth portion L51 and the sixth portion L52 of the same second sub-signal line L5', respectively.
Specifically, each of the second signal lines L5 is connected to the first and second pixel cells P1 and P2 of the same row for supplying driving signals to the first and second pixel cells P1 and P2 of the same row. Illustratively, when the first pixel circuit included in the first pixel unit P1 and the second pixel circuit included in the second pixel unit P2 include initialization transistors therein for initializing the first pixel circuit and the second pixel circuit, the second sub-signal line L5' may be a signal line, for example, a first scan signal line, which controls the initialization transistors to be turned on or off. When the first display area 110 is disposed around the second display area 120, the second sub-signal line L5' is divided into a fifth portion L51 and a sixth portion L52 at the second display area 120, and a second conductive line L6 disposed at the second display area 120. The fifth portion L51, the second conductive line L6, and the sixth portion L52 of the same second sub-signal line L5' correspond. Fig. 10 exemplarily shows that the second display region 120 is provided with 6 second conductive lines L6, and the fifth portion L51 and the sixth portion L52 of each of the second sub-signal lines L5' are connected by one second conductive line L6, respectively. At this time, the fifth portion L51 and the sixth portion L52 of the same second sub-signal line L5 'on both sides of the second display area 120 can be electrically connected to have the same load, so that the driving signals provided by the second sub-signal line L5' for the first pixel units P1 on both sides of the second display area 120 are the same, the mura phenomenon on both sides of the second display area 120 is improved, and the display effect of the display panel is improved. Meanwhile, the fifth part L51 of the second sub-signal line L5 'can be prevented from being connected with the sixth part L52 in a winding manner, the additional increase of the area of the second display area 120 for arranging the windings of the second sub-signal line L5' is avoided, and the display effect of the display panel is ensured.
It should be noted that the display panel may further include a light-emitting control signal line and an initialization signal line, the light-emitting control signal line is used for controlling the pixel circuit to emit light in the light-emitting phase of the pixel circuit, and the initialization signal line is used for providing an initialization signal in the initialization phase of the pixel circuit. The light emission control signal line and the initialization signal line may each extend in the row direction X of the first pixel cell, and the first pixel cell P1 and the second pixel cell P2 of the same row correspond to one light emission control signal line and the initialization signal line. When the first display area 110 is disposed around the second display area 120, a part of the light-emitting control signal lines and the initialization signal lines are divided into two parts at two sides of the second display area 120, and at this time, the two parts of the same light-emitting control signal lines or the initialization signal lines can also be connected through the second conductive line L6 disposed in the second display area 120, so that the light-emitting control signal lines or the initialization signal lines provide the same driving signals for the first pixel units P1 at two sides of the second display area 120, thereby improving the mura phenomenon at two sides of the second display area 120, avoiding connecting the two parts of the light-emitting control signal lines or the initialization signal lines in a winding manner, avoiding additionally increasing the area of the second display area 120, and ensuring the display effect of the display panel.
Fig. 12 is a schematic structural diagram of another display panel according to an embodiment of the present invention, and with continued reference to fig. 10 and 12, the first pixel cell P1 includes an initialization transistor, and the second signal line L5 is connected to a gate of the initialization transistor; in the adjacent pixel rows of the first pixel unit, the first signal line L1 of the upper row is connected to the second signal line L5 of the lower row. .
Specifically, two initialization transistors, a gate initialization transistor T3 and an anode initialization transistor T4, are exemplarily included in fig. 10. When the second signal line L5 is a first scanning signal line and the first signal line L1 is a second scanning signal line, the first signal line L1 in the previous row may be connected to the second signal line L5 in the next row, so that the requirements of different pixel circuits on the driving signals provided by the first signal line L1 and the second signal line L5 may be met, and at the same time, only the first conducting wire L2 may be disposed in the second display area 120 to connect the first signal line L1 and the second signal line L5, so as to reduce the number of conducting wires disposed in the second display area 120, and further ensure the light transmittance of the second display area 120.
On the basis of the technical schemes, the first lead is in a wave shape.
Specifically, when the first conductive line is bent and extended in a wave shape along the row direction of the first pixel unit, the diffraction phenomenon of the first conductive line to the light of the second display area can be reduced, thereby ensuring the light emitting effect of the light emitting unit in the second display area 120.
The embodiment of the invention also provides a display device. Fig. 13 is a schematic structural diagram of a display device according to an embodiment of the present invention. As shown in fig. 13, the display device 20 includes a display panel 21 provided in any embodiment of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (9)
1. The display panel is characterized by comprising a first display area and a second display area, wherein the light transmittance of the first display area is less than that of the second display area; the first display area is at least partially arranged around the second display area;
the first display area is provided with a first pixel unit and a first signal line; the first signal line comprises a first sub-signal line penetrating through the second display area along the row direction of the first pixel unit; the first sub signal line comprises a first part and a second part which are arranged at two sides of the second display area, and a first conducting wire arranged in the second display area, and two ends of the first conducting wire are respectively connected with the first part and the second part of the same first sub signal line;
the second display area comprises a transition area and a transparent display area, and the transition area is arranged around the transparent display area; the first conductive line comprises a first sub conductive line, a second sub conductive line, and a third sub conductive line; along the row direction of the first pixel unit, the first sub conductive line and the third sub conductive line are respectively arranged in transition regions at two sides of the transparent display region, the second sub conductive line is arranged in the transparent display region, a first end of the second sub conductive line is connected with the first part through the first sub conductive line, and a second end of the second sub conductive line is connected with the second part through the third sub conductive line;
the transition area is provided with a pixel circuit, and the transparent display area is provided with a light-emitting unit; the pixel circuit is connected with the light-emitting unit through a first transparent conducting wire;
the transition region is provided with a second light emitting unit and a second pixel circuit corresponding thereto.
2. The display panel of claim 1, wherein the second sub-conductive line is a transparent conductive line.
3. The display panel of claim 2, wherein the second sub-conductive line is disposed in a same layer as the first transparent conductive line.
4. The display panel according to claim 2, wherein the transparent display region is provided with a plurality of light emitting device regions, the light emitting device regions include at least two light emitting cells, and the light emitting cells in the light emitting device regions are connected by a second transparent conductive line; the second sub conductive line and the second transparent conductive line are arranged on the same layer and are not in contact with each other.
5. The display panel according to any one of claims 1 to 4, wherein the first pixel unit includes a data writing transistor, and wherein the first signal line is connected to a gate of the data writing transistor.
6. The display panel according to any one of claims 1 to 4, wherein the first display region is further provided with a second signal line having an extending direction same as that of the first signal line; the second signal line comprises a second sub-signal line penetrating through the second display area along the row direction of the first pixel unit; the second sub signal line comprises a fifth part and a sixth part which are arranged at two sides of the second display area, and a second conductive line arranged in the second display area, wherein two ends of the second conductive line are respectively connected with the fifth part and the sixth part of the same second sub signal line.
7. The display panel according to claim 6, wherein the first pixel unit includes an initialization transistor, and the second signal line is connected to a gate of the initialization transistor; in the adjacent pixel rows of the first pixel unit, the first signal line of the upper row is connected with the second signal line of the lower row.
8. The display panel according to claim 1, wherein the first conductive line has a wave shape.
9. A display device characterized by comprising the display panel according to any one of claims 1 to 8.
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| CN113658542A (en) * | 2021-10-21 | 2021-11-16 | 北京中科海芯科技有限公司 | Display device and driving method thereof |
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| CN108010947B (en) * | 2017-11-29 | 2021-01-08 | 上海天马有机发光显示技术有限公司 | Organic light-emitting display panel and organic light-emitting display device |
| CN109004007B (en) * | 2018-07-27 | 2020-10-16 | 武汉华星光电半导体显示技术有限公司 | Display panel for identifying fingerprints under screen |
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| CN111048004B (en) * | 2019-12-31 | 2022-06-28 | 武汉天马微电子有限公司 | Display panel and display device |
| CN111028765B (en) * | 2020-01-03 | 2022-06-24 | 武汉天马微电子有限公司 | Display panel and display device |
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