Display panel and display device

Abstract

Provided are a display panel and a display device. The display panel comprises a display area, a peripheral area, a plurality of signal lines located on a base substrate, and discharging units. Each discharging unit comprises a transmission part; the transmission part comprises a semiconductor material; the plurality of signal lines comprise first signal lines and second signal lines; gaps are formed between the first signal lines and the second signal lines, and the transmission parts are located in the gaps; each discharging unit further comprises a first discharging end and a second discharging end; at least part of the first discharging end is located between the transmission part and the corresponding first signal line, and the first discharging end is connected to the first signal line; at least part of the second discharging end is located between the transmission part and the corresponding second signal line, and the second discharging end is connected to the second signal line; and the transmission part is configured to enable the first signal line and the second signal line to be communicated with each other when at least one of the first signal line, the second signal line or the transmission part receives static electricity, so that the static electricity is transmitted to the first signal line and the second signal line. Thus, the reliability of electrostatic protection of devices can be improved.

Description

Display panel and display device

[0001] This application claims priority to Chinese Patent Application No. 2023115756078 filed on November 23, 2021, and the contents of the above-mentioned Chinese patent application disclosure are hereby incorporated by reference in their entirety as a part of this application. Technical Field

[0002] At least one embodiment of the present disclosure relates to a display panel and a display device. Background Art

[0003] With the continuous advancement of technology, the market for flexible organic light-emitting diode (OLED) displays is growing. To gain a competitive edge in the future, OLED display sizes are gradually increasing. At the same time, manufacturers are placing increasing emphasis on improving the yield rate of these displays.

[0004] Summary of the Invention

[0005] At least one embodiment of the present disclosure provides a display panel and a display device.

[0006] At least one embodiment of the present disclosure provides a display panel, comprising a display area and a peripheral area, wherein the display area is configured to display an image and includes a plurality of sub-pixels; the peripheral area is located on at least one side of the display area; the display panel comprises a base substrate, and a plurality of signal lines located on the base substrate, at least part of the signal lines being located in the peripheral area, the signal lines being connected to at least one of the plurality of sub-pixels; the display panel further comprises a discharge unit, the discharge unit comprising a transmission portion, the transmission portion comprising a semiconductor material, wherein the plurality of signal lines comprises a first signal line and a second signal line, and the first signal line and the second signal line are connected. There is a gap, the transmission part is located in the gap, the discharge unit further includes a first discharge end and a second discharge end, at least a portion of the first discharge end is located between the transmission part and the first signal line, and the first discharge end is connected to the first signal line, at least a portion of the second discharge end is located between the transmission part and the second signal line, and the second discharge end is connected to the second signal line, the transmission part is configured to connect the first signal line and the second signal line when at least one of the first signal line, the second signal line or the transmission part receives static electricity, so that the static electricity is transmitted to the first signal line and the second signal line.

[0007] For example, in the display panel provided according to at least one embodiment of the present disclosure, the signal line extends from the display area to the peripheral area.

[0008] For example, in a display panel provided according to at least one embodiment of the present disclosure, the first discharge end and the first signal line are an integrated structure, the second discharge end and the second signal line are an integrated structure, the first discharge end protrudes relative to the extension direction of the first signal line, and the second discharge end protrudes relative to the extension direction of the second signal line.

[0009] For example, in a display panel provided according to at least one embodiment of the present disclosure, the orthographic projection area of ​​the transmission portion on the base substrate is larger than the orthographic projection area of ​​the first discharge end on the base substrate, and the orthographic projection area of ​​the transmission portion on the base substrate is larger than the orthographic projection area of ​​the second discharge end on the base substrate.

[0010] For example, in a display panel provided according to at least one embodiment of the present disclosure, in an extension direction of the transmission portion, a size of the transmission portion is larger than a size of at least one of the first discharge end and the second discharge end.

[0011] For example, in the display panel provided according to at least one embodiment of the present disclosure, the first discharge end is in contact with the transmission portion, and the second discharge end is in contact with the transmission portion.

[0012] For example, in the display panel provided according to at least one embodiment of the present disclosure, at least one of the orthographic projection of the first discharge end on the base substrate and the orthographic projection of the second discharge end on the base substrate is circular, elliptical, rectangular or triangular.

[0013] For example, in the display panel provided according to at least one embodiment of the present disclosure, the orthographic projection of the first discharge end on the base substrate has the same shape as the orthographic projection of the second discharge end on the base substrate.

[0014] For example, in a display panel provided according to at least one embodiment of the present disclosure, the orthographic projection of the end of the first discharge end away from the first signal line on the base substrate is a first semicircle, and the orthographic projection of the end of the second discharge end away from the second signal line on the base substrate is a second semicircle.

[0015] For example, in the display panel provided by at least one embodiment of the present disclosure, the radius of the first semicircle is 1 to 1.5 micrometers, and the radius of the second semicircle is 1 to 1.5 micrometers.

[0016] For example, in a display panel provided according to at least one embodiment of the present disclosure, an orthographic projection of the first discharge end on the base substrate and an orthographic projection of the transmission portion on the base substrate have a first overlapping area, and an overlapping area of ​​an orthographic projection of the second discharge end on the base substrate and an orthographic projection of the transmission portion on the base substrate is a second overlapping area, wherein an area of ​​the first overlapping area is smaller than an area of ​​an orthographic projection of the first discharge end on the base substrate, and an area of ​​the second overlapping area is smaller than an area of ​​an orthographic projection of the second discharge end on the base substrate.

[0017] For example, in the display panel provided according to at least one embodiment of the present disclosure, along the extension direction of the transmission portion, the maximum size of the first overlapping area is less than 2 microns, and the maximum size of the second overlapping area is less than 2 microns.

[0018] For example, in a display panel provided according to at least one embodiment of the present disclosure, an orthographic projection of the first discharge end on the base substrate at least partially overlaps with an orthographic projection of the transmission portion on the base substrate, and an orthographic projection of the second discharge end on the base substrate at least partially overlaps with an orthographic projection of the transmission portion on the base substrate.

[0019] For example, in a display panel provided according to at least one embodiment of the present disclosure, the orthographic projection of the first discharge end on the base substrate does not overlap with the orthographic projection of the transmission portion on the base substrate, and the orthographic projection of the second discharge end on the base substrate does not overlap with the orthographic projection of the transmission portion on the base substrate.

[0020] For example, in the display panel provided according to at least one embodiment of the present disclosure, in the extending direction of the transmission portion, the minimum distance between the transmission portion and the first discharge end and the minimum distance between the transmission portion and the second discharge end are both less than 2 micrometers.

[0021] For example, in the display panel provided according to at least one embodiment of the present disclosure, in a direction perpendicular to the base substrate, the thickness of the first signal line and the thickness of the second signal line are both greater than the thickness of the transmission portion.

[0022] For example, according to the display panel provided by at least one embodiment of the present disclosure, in the direction perpendicular to the base substrate, the thickness of the first signal line is 9-12 times the thickness of the transmission part; and / or the thickness of the second signal line is 9-12 times the thickness of the transmission part.

[0023] For example, according to the display panel provided by at least one embodiment of the present disclosure, at least one of the first signal line and the second signal line is located on the same layer as the transmission part; or, the first signal line and the second signal line are both located on different layers from the transmission part.

[0024] For example, in a display panel provided according to at least one embodiment of the present disclosure, the discharge unit further includes a third discharge end, the plurality of signal lines further include a third signal line, the third discharge end is connected to the third signal line, and the transmission portion is further configured to transmit the static electricity to the third signal line.

[0025] For example, in the display panel provided according to at least one embodiment of the present disclosure, the first discharge end, the second discharge end, and the third discharge end are located on the same layer.

[0026] For example, in the display panel provided according to at least one embodiment of the present disclosure, at least one of the first discharge end and the second discharge end and the third discharge end are located in the same conductive pattern layer.

[0027] For example, in the display panel provided according to at least one embodiment of the present disclosure, the third discharge end is in contact with the transmission portion.

[0028] For example, in the display panel provided according to at least one embodiment of the present disclosure, the third discharge end is spaced apart from the transmission portion.

[0029] For example, in the display panel provided according to at least one embodiment of the present disclosure, an extension direction of the third discharge end intersects with an extension direction of the transmission portion.

[0030] For example, in the display panel provided according to at least one embodiment of the present disclosure, both the first signal line and the second signal line intersect with the third signal line.

[0031] For example, in a display panel provided according to at least one embodiment of the present disclosure, the transmission portion includes a main portion and a protruding portion, the protruding portion is connected to the main portion, and the protruding portion protrudes from the main portion, and at least a portion of the third discharge end is located between the protruding portion and the third signal line.

[0032] For example, in the display panel provided according to at least one embodiment of the present disclosure, the orthographic projection of the transmission portion on the base substrate is in a “T” shape.

[0033] For example, according to the display panel provided by at least one embodiment of the present disclosure, the third signal line is configured to transmit a signal different from the first signal line, and / or the third signal line is configured to transmit a signal different from the second signal line.

[0034] For example, a display panel provided according to at least one embodiment of the present disclosure further includes: a first insulating layer located on the base substrate; a second insulating layer located on a side of the first insulating layer away from the base substrate; a pixel defining pattern located on a side of the second insulating layer away from the first insulating layer, the pixel defining pattern being configured to define the light-emitting area of ​​the sub-pixel; an electrode layer located on a side of the pixel defining pattern away from the base substrate, wherein the transmission portion is located between the first insulating layer and the pixel defining pattern.

[0035] For example, in the display panel provided according to at least one embodiment of the present disclosure, the transmission portion, the first signal line, and the second signal line are all located on a side of the first insulating layer away from the base substrate, and are in contact with the first insulating layer.

[0036] For example, in the display panel provided according to at least one embodiment of the present disclosure, the transmission portion is in contact with the second insulating layer.

[0037] For example, in a display panel provided according to at least one embodiment of the present disclosure, the first insulating layer includes a first buffer layer and a second buffer layer stacked together, the first buffer layer is closer to the base substrate than the second buffer layer, and the transmission part, the first signal line and the second signal line are all located on the side of the second buffer layer away from the base substrate, and are all in contact with the second buffer layer.

[0038] For example, according to the display panel provided by at least one embodiment of the present disclosure, the second buffer layer includes a first buffer portion and a second buffer portion, the transmission portion is located on the side of the first buffer portion away from the base substrate, and the transmission portion is in contact with the first buffer portion, the orthographic projection of the second buffer portion on the base substrate does not overlap with the orthographic projection of the transmission portion on the base substrate, and in a direction perpendicular to the base substrate, the first buffer portion includes a first surface close to the electrode layer, the second buffer portion includes a second surface close to the electrode layer, and the first surface is farther away from the base substrate than the second surface.

[0039] For example, in the display panel provided according to at least one embodiment of the present disclosure, the second insulating layer is located on a side of the transmission portion away from the base substrate, and the orthographic projection of the transmission portion on the base substrate, the orthographic projection of the first discharge end on the base substrate, and the orthographic projection of the second discharge end on the base substrate all at least partially overlap with the orthographic projection of the second insulating layer on the base substrate.

[0040] For example, according to the display panel provided by at least one embodiment of the present disclosure, the orthographic projection of the first signal line on the base substrate at least partially overlaps with the orthographic projection of the second insulating layer on the base substrate, and the orthographic projection of the second signal line on the base substrate at least partially overlaps with the orthographic projection of the second insulating layer on the base substrate.

[0041] For example, in a display panel provided according to at least one embodiment of the present disclosure, at least a portion of the orthographic projection of the first signal line on the base substrate is located outside the orthographic projection of the second insulating layer on the base substrate, and at least a portion of the orthographic projection of the second signal line on the base substrate is located outside the orthographic projection of the second insulating layer on the base substrate.

[0042] For example, in the display panel provided according to at least one embodiment of the present disclosure, the second insulating layer is in contact with the pixel defining pattern.

[0043] For example, according to at least one embodiment of the present disclosure, a display panel is provided, which further includes a third insulating layer, wherein the second insulating layer, the third insulating layer and the pixel defining pattern are stacked, the third insulating layer is located between the second insulating layer and the pixel defining pattern, and the orthographic projection of the discharge unit on the base substrate at least partially overlaps with the orthographic projection of the third insulating layer on the base substrate.

[0044] For example, in a display panel provided according to at least one embodiment of the present disclosure, the pixel defining pattern includes a first pixel defining portion and a second pixel defining portion, the first pixel defining portion is located on a side of the transmission portion away from the base substrate, and the orthographic projection of the first pixel defining portion on the base substrate overlaps with the orthographic projection of the transmission portion on the base substrate, and the orthographic projection of the second pixel defining portion on the base substrate does not overlap with the orthographic projection of the transmission portion on the base substrate, wherein in a direction perpendicular to the base substrate, the thickness of the first pixel defining portion is less than the thickness of the second pixel defining portion.

[0045] For example, in a display panel provided according to at least one embodiment of the present disclosure, the electrode layer includes an electrode portion, the electrode portion is located on a side of the first pixel defining portion away from the base substrate, and the orthographic projection of the electrode portion on the base substrate overlaps with the orthographic projection of the transmission portion on the base substrate, and the electrode layer has a recess at the first pixel defining portion.

[0046] For example, according to at least one embodiment of the present disclosure, a display panel is provided, which further includes a fourth insulating layer, wherein the first insulating layer, the fourth insulating layer and the second insulating layer are stacked in a direction perpendicular to the base substrate, the fourth insulating layer is located between the first insulating layer and the second insulating layer, the transmission part is located on the side of the first insulating layer away from the base substrate and is in contact with the first insulating layer, and the first signal line and the second signal line are both located on the side of the fourth insulating layer away from the base substrate and are in contact with the fourth insulating layer.

[0047] For example, in the display panel provided according to at least one embodiment of the present disclosure, the transmission portion is located between the first insulating layer and the fourth insulating layer, and the transmission portion is covered by the fourth insulating layer.

[0048] For example, in the display panel provided according to at least one embodiment of the present disclosure, the transmission portion is located between the first insulating layer and the second insulating layer, and the orthographic projection of the transmission portion on the base substrate does not overlap with the orthographic projection of the fourth insulating layer on the base substrate.

[0049] For example, according to at least one embodiment of the present disclosure, a display panel is provided, which further includes a groove, wherein at least a portion of the transmission portion is located in the groove, and the pixel defining pattern fills the groove and covers the transmission portion.

[0050] For example, in a display panel provided according to at least one embodiment of the present disclosure, the width of the transmission part is smaller than the width of the groove in a direction parallel to the base substrate and perpendicular to the extension direction of the transmission part, and there is a first gap between the transmission part and the inner wall of the groove.

[0051] For example, according to a display panel provided by at least one embodiment of the present disclosure, the first insulating layer includes a first buffer layer and a second buffer layer that are stacked, the first buffer layer is closer to the base substrate than the second buffer layer, the transmission part, the first signal line and the second signal line are all located on the side of the second buffer layer away from the base substrate, and are all in contact with the second buffer layer, the second buffer layer includes a first portion located in the groove, a second gap is provided between at least part of the first portion and the inner wall of the groove, the transmission part is located on the side of the first portion away from the base substrate, and the transmission part is in contact with the first portion, and the pixel defining pattern covers the first portion.

[0052] For example, according to a display panel provided by at least one embodiment of the present disclosure, the second insulating layer includes a second portion located in the groove, a third gap is provided between at least a portion of the second portion and an inner wall of the groove, the first portion, the transmission portion and the second portion are stacked in a direction perpendicular to the base substrate to form a boss, and the pixel defining pattern covers the boss.

[0053] For example, according to the display panel provided by at least one embodiment of the present disclosure, the orthographic projection of the second portion on the base substrate falls within the orthographic projection of the transmission portion on the base substrate, and falls within the orthographic projection of the first portion on the base substrate.

[0054] For example, in a display panel provided according to at least one embodiment of the present disclosure, the pixel defining pattern includes a first pixel defining portion and a second pixel defining portion, the first pixel defining portion is located on a side of the transmission portion away from the base substrate, and the orthographic projection of the first pixel defining portion on the base substrate overlaps with the orthographic projection of the transmission portion on the base substrate, the orthographic projection of the second pixel defining portion on the base substrate does not overlap with the orthographic projection of the transmission portion on the base substrate, the second pixel defining portion includes a sub-defining portion located in the groove, and in a direction perpendicular to the base substrate, the thickness of the first pixel defining portion is less than the thickness of the sub-defining portion.

[0055] For example, in the display panel provided according to at least one embodiment of the present disclosure, in a direction perpendicular to the base substrate, the thickness of the first pixel defining portion is 1 / 8-1 / 10 of the thickness of the sub-defining portion.

[0056] For example, according to at least one embodiment of the present disclosure, a display panel is provided, which further includes a third insulating layer, wherein the second insulating layer, the third insulating layer and the pixel defining pattern are stacked, the third insulating layer is located between the second insulating layer and the pixel defining pattern, and the third insulating layer is located on the outside of the groove away from the transmission portion.

[0057] For example, in a display panel provided according to at least one embodiment of the present disclosure, the second buffer layer includes a first side wall facing the transmission part, the first side wall has a first slope angle with a plane, the plane is parallel to the base substrate, the second insulating layer includes a second side wall facing the transmission part, the second side wall has a second slope angle with the plane, and the first slope angle is smaller than the second slope angle.

[0058] For example, according to at least one embodiment of the present disclosure, a display panel is provided, which further includes a third insulating layer, wherein the second insulating layer, the third insulating layer and the pixel defining pattern are stacked, the third insulating layer is located between the second insulating layer and the pixel defining pattern, the third insulating layer is located on the outside of the groove away from the transmission part, the third insulating layer includes a third side wall facing the transmission part, the third side wall has a third slope angle with the plane, and the second slope angle is greater than the third slope angle.

[0059] For example, in a display panel provided according to at least one embodiment of the present disclosure, the first slope angle is less than 30 degrees, the second slope angle is 30-70 degrees, and the third slope angle is less than 30 degrees.

[0060] For example, in the display panel provided according to at least one embodiment of the present disclosure, at least a portion of the first discharge end is located in the groove, and at least a portion of the second discharge end is located in the groove.

[0061] For example, in a display panel provided according to at least one embodiment of the present disclosure, the discharge unit further includes a third discharge end, the plurality of signal lines further include a third signal line, the third discharge end is connected to the third signal line, and the transmission portion is further configured to transmit the static electricity to the third signal line, wherein at least a portion of the third discharge end is located in the groove.

[0062] For example, in the display panel provided according to at least one embodiment of the present disclosure, at least two discharge cells are provided in the interval between the first signal line and the second signal line, and the at least two discharge cells are located on the same side of the display area.

[0063] For example, in the display panel provided according to at least one embodiment of the present disclosure, an extending direction of the first signal line is the same as an extending direction of the second signal line.

[0064] For example, in the display panel provided according to at least one embodiment of the present disclosure, an extension direction of the first signal line intersects with an extension direction of the second signal line.

[0065] For example, according to at least one embodiment of the present disclosure, a display panel is provided, wherein the display panel includes a plurality of discharge cells, and the plurality of discharge cells are sequentially arranged along a circumference of the display area.

[0066] For example, according to at least one embodiment of the present disclosure, a display panel is provided, which includes a plurality of gate lines and a plurality of data lines. In the peripheral area, the discharge units are provided between adjacent gate lines, the discharge units are provided between adjacent data lines, and the discharge units are provided between adjacent gate lines and data lines. The adjacent discharge units are connected to form a ring.

[0067] For example, in a display panel provided according to at least one embodiment of the present disclosure, the plurality of discharge cells are connected in sequence, and the orthographic projections of the plurality of discharge cells on the base substrate are in the shape of a ring, a portion of a ring, or a line.

[0068] For example, in a display panel provided according to at least one embodiment of the present disclosure, the plurality of signal lines further include a fourth signal line, at least one of the first signal line and the second signal line intersects the fourth signal line, and the fourth signal line is spaced apart from the transmission portion in the discharge unit.

[0069] For example, in a display panel provided according to at least one embodiment of the present disclosure, the fourth signal line is located between the discharge unit and the display area, and the signal transmitted by at least one of the first signal line and the second signal line is different from the signal transmitted by the fourth signal line.

[0070] For example, in a display panel provided according to at least one embodiment of the present disclosure, the signal line is one of a gate line, a data line, a clock signal line, a start signal line, a test line, and a switch control signal line, the gate line is configured to transmit a gate signal, the data line is configured to transmit a data signal, the clock signal line is configured to transmit a clock signal, the start signal line is configured to transmit a start signal, the test signal line is configured to transmit a test signal, and the switch control signal line is configured to transmit a switch signal.

[0071] For example, in the display panel provided according to at least one embodiment of the present disclosure, the length of the transmission portion in its extension direction is 150-180 microns; and / or the width of the transmission portion in a direction perpendicular to its extension direction is 15-25 microns; and / or the thickness of the transmission portion in a direction perpendicular to the base substrate is 0.035-0.050 microns.

[0072] At least one embodiment of the present disclosure further provides a display device, comprising the display panel described in any of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, rather than limiting the present disclosure.

[0074] FIG1 is a partial plan view of a display panel provided by at least one embodiment of the present disclosure.

[0075] FIG2 is a schematic plan view of a discharge unit provided by at least one embodiment of the present disclosure.

[0076] FIG. 3 is a schematic cross-sectional view taken along line AA′ in FIG. 2 .

[0077] FIG4 is a schematic plan view of another discharge unit provided by at least one embodiment of the present disclosure.

[0078] FIG. 5 is a schematic cross-sectional view taken along line BB′ in FIG. 4 .

[0079] FIG6 is a schematic plan view of another discharge unit provided by at least one embodiment of the present disclosure.

[0080] FIG. 7 is a schematic cross-sectional view taken along line AA′ in FIG. 6 .

[0081] FIG8 is a partial cross-sectional schematic diagram of yet another discharge unit provided by at least one embodiment of the present disclosure.

[0082] FIG9 is a partial cross-sectional schematic diagram of yet another discharge unit provided by at least one embodiment of the present disclosure.

[0083] FIG10 is a partial cross-sectional schematic diagram of yet another discharge unit provided by at least one embodiment of the present disclosure.

[0084] FIG. 11 is another schematic cross-sectional view of the display panel shown in FIG. 10 .

[0085] FIG12 is a schematic plan view of yet another discharge unit provided by at least one embodiment of the present disclosure.

[0086] FIG. 13 is a schematic cross-sectional view of the display panel taken along line AA′ in FIG. 12 .

[0087] FIG. 14 is a schematic cross-sectional view of the display panel taken along line BB′ in FIG. 12 .

[0088] FIG15 is a schematic plan view of yet another discharge unit provided by at least one embodiment of the present disclosure.

[0089] FIG. 16 is a schematic cross-sectional view of the display panel taken along line AA′ in FIG. 15 .

[0090] FIG17 is a schematic plan view of yet another discharge unit provided by at least one embodiment of the present disclosure.

[0091] FIG18 is a schematic cross-sectional view of the display panel taken along line AA′ in FIG17 .

[0092] FIG19 is a schematic cross-sectional view of the display panel taken along line BB′ in FIG17 .

[0093] FIG. 20 is a schematic plan view of yet another discharge unit provided by at least one embodiment of the present disclosure.

[0094] FIG. 21 is a schematic cross-sectional view of the display panel taken along line AA′ in FIG. 20 .

[0095] FIG. 22 is a schematic cross-sectional view of the display panel taken along line BB′ in FIG. 20 .

[0096] FIG23 is a schematic plan view of yet another display panel provided by at least one embodiment of the present disclosure.

[0097] FIG. 24 is a schematic plan view of yet another discharge unit provided by at least one embodiment of the present disclosure.

[0098] FIG. 25 is a schematic plan view of yet another discharge unit provided by at least one embodiment of the present disclosure.

[0099] FIG26 is a schematic diagram of a 3T1C pixel circuit in a display panel provided in an embodiment of the present disclosure.

[0100] 27 to 30 are plan views of stacked layers of multiple film layers in a display panel provided by an embodiment of the present disclosure.

[0101] 31 and 32 are cross-sectional views of a display panel according to an embodiment of the present disclosure.

[0102] FIG33 is a signal timing diagram of the pixel circuit during the display process.

[0103] 34 and 35 show signal timing diagrams of the pixel circuit during the detection process.

[0104] FIG36 is a schematic diagram of a display device provided by at least one embodiment of the present disclosure. DETAILED DESCRIPTION

[0105] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0106] Unless otherwise defined, the technical or scientific terms used in this disclosure should have the usual meanings understood by persons of ordinary skill in the field to which this disclosure belongs. The words "first", "second" and similar terms used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0107] The various components or structures in the embodiments of the present disclosure may be arranged in order of appearance, without being restricted to the names with ordinal numbers given in the specification.

[0108] For example, the electrostatic discharge (ESD) device in the display panel includes multiple thin-film transistors connected to the light-emitting diodes, which can only play an electrostatic protection role after the light-emitting diodes are manufactured. In addition, the pattern structure of the electrostatic discharge device is complex, and the risk of damage during the manufacturing process is high.

[0109] For example, a large-sized display panel may adopt a structure combining a series-type tandem white organic light-emitting diode (WOLED) and a color filter (CF). For example, the display panel may have a WRGB four-pixel structure. For example, the pixel structure of the display panel may be 3T1C, i.e., a pixel structure combining three transistors with a compensation capacitor. In the display panel, the switching transistor (e.g., a data writing transistor) and the sensing transistor (e.g., a transistor connected to a sensing line to connect to an external detection circuit) may share a gate line, thereby facilitating an increase in the pixel aperture ratio, improving device life and display quality.

[0110] However, for large-sized display panels, the timing algorithm needs to be redesigned according to the requirements of aging compensation of light-emitting devices. When sharing a gate line, the load of the gate line will increase significantly (for example, it may double), and accordingly, the parasitic capacitance will also increase, thereby increasing the risk of electrostatic breakdown. In addition, even if the switching conversion transistor and the sensing transistor in the large-sized display panel do not share a gate line, the gate line is long, for example, more than one meter, which will also make it more likely to cause electrostatic damage.

[0111] At least one embodiment of the present disclosure provides a display panel and a display device.

[0112] At least one embodiment of the present disclosure provides a display panel, comprising a display area and a peripheral area, wherein the display area is configured to display an image and includes a plurality of sub-pixels; the peripheral area is located on at least one side of the display area; the display panel comprises a base substrate, and a plurality of signal lines located on the base substrate, wherein at least a portion of the signal lines is located in the peripheral area and is connected to at least one of the plurality of sub-pixels; the display panel further comprises a discharge unit, wherein the discharge unit comprises a transmission portion, wherein the transmission portion comprises a semiconductor material, the plurality of signal lines include a first signal line and a second signal line, wherein a gap is provided between the first signal line and the second signal line, and the transmission portion is located in the gap; the discharge unit further comprises a first discharge end and a second discharge end, wherein at least a portion of the first discharge end is located between the transmission portion and the first signal line, and the first discharge end is connected to the first signal line, and at least a portion of the second discharge end is located between the transmission portion and the second signal line, and the second discharge end is connected to the second signal line, and the transmission portion is configured to connect the first signal line and the second signal line when at least one of the first signal line, the second signal line, or the transmission portion receives static electricity, so that the static electricity is transmitted to the first signal line and the second signal line.

[0113] In the display panel provided in the embodiment of the present disclosure, a discharge unit is arranged in the interval between adjacent first signal lines and second signal lines, and the transmission part of the discharge unit includes a semiconductor material. On the one hand, when static electricity is generated, the static electricity can be transmitted and diffused to the first signal line and the second signal line through the transmission part, thereby reducing the risk of static electricity damage, which is beneficial to improving the yield of the device and the reliability of electrostatic protection. When no static electricity is generated, because the transmission part includes a semiconductor material, the first signal line and the second signal line are electrically insulated from each other, the transmission part does not affect the function of the first signal line and the second signal line, and the transmission part can reduce the probability of signal crosstalk between the first signal line and the second signal line, which is beneficial to improving display quality. On the other hand, the pattern structure of the discharge unit is simple, which is beneficial to simplifying the process steps and reducing the corresponding etching process, and is easy to manufacture.

[0114] The display panel and the display device provided by the embodiments of the present disclosure are described below with reference to the accompanying drawings.

[0115] 1 is a partial plan view of a display panel according to at least one embodiment of the present disclosure; FIG. 2 is a plan view of a discharge unit according to at least one embodiment of the present disclosure; and FIG. 3 is a cross-sectional view taken along line AA′ in FIG. 2 .

[0116] As shown in FIG1 , a display panel 01 includes a display area 100 and a peripheral area 200. The display area 100 is configured to display images and includes a plurality of sub-pixels SP. The peripheral area 200 is located on at least one side of the display area 100. For example, the embodiments of the present disclosure use an example in which the peripheral area 200 surrounds the display area 100, but the present invention is not limited thereto. The peripheral area 200 may be located on at least one side of the display area 100. For example, the peripheral area 200 may be located on at least one of the left side, right side, top side, and bottom side of the display area 100.

[0117] As shown in FIG1 , a display panel 01 includes a base substrate BS and a plurality of signal lines 300 located on the base substrate BS. At least a portion of the signal line 300 is located in a peripheral region 200 , and the signal line 300 is connected to at least one sub-pixel SP among a plurality of sub-pixels SP. For clarity, FIG1 does not show all structures and wiring of the display panel 01 .

[0118] As shown in FIG1 , the display panel 01 further includes a discharge unit 40, which includes a transmission unit 400, and the transmission unit 400 includes a semiconductor material. A plurality of signal lines 300 on the substrate BS include a first signal line 310 and a second signal line 320, with a gap 350 between the first signal line 310 and the second signal line 320, and the transmission unit 400 is located in the gap 350. For example, the first signal line 310 and the second signal line 320 can be two adjacent gate lines, and both are configured to transmit gate signals, which is not limited in the embodiments of the present disclosure. For example, the first signal line 310 and the second signal line 320 may not be adjacent to each other, that is, other signal lines 300 may be provided between the first signal line 310 and the second signal line 320, which is not limited in the embodiments of the present disclosure.

[0119] As shown in Figure 2, the discharge unit 40 further includes a first discharge terminal 410 and a second discharge terminal 420. At least a portion of the first discharge terminal 410 is located between the transmission portion 400 and the first signal line 310, and is connected to the first signal line 310. At least a portion of the second discharge terminal 420 is located between the transmission portion 400 and the second signal line 320, and is connected to the second signal line 320. For example, both the first discharge terminal 410 and the second discharge terminal 420 include conductive structures. For example, the first discharge terminal 410 can be directly connected to the first signal line 310, and the second discharge terminal 420 can be directly connected to the second signal line 320, but the embodiments of the present disclosure are not limited thereto. For example, in some embodiments, the first discharge terminal 410 may be connected to the first signal line 310 via a conductive structure, and the second discharge terminal 420 may be connected to the second signal line 320 via a conductive structure. That is, as long as the electrical connection between the first discharge terminal 410 and the first signal line 310 and the electrical connection between the second discharge terminal 420 and the second signal line 320 can be achieved, the embodiments of the present disclosure do not limit the connection method between the first signal line 310 and the first discharge terminal 410 and the connection method between the second signal line 320 and the second discharge terminal 420.

[0120] As shown in FIG2 , the transmission unit 400 is configured to communicate with the first signal line 310 and the second signal line 320, respectively, when at least one of the first signal line 310, the second signal line 320, and the transmission unit 400 receives static electricity, so that the static electricity is transmitted to the first signal line 310 and the second signal line 320. For example, when static electricity is generated in the transmission unit 400, because the transmission unit 400 includes a semiconductor material, the transmission unit 400 can have the characteristics of a conductor, and the static electricity can be transmitted to the first signal line 310 and the second signal line 320 through the first discharge end 410 and the second discharge end 420, thereby gradually dissipating the static electricity and gradually weakening its impact.

[0121] For example, as shown in FIG. 2 and FIG. 3 , the first discharge terminal 410 and the transmission unit 400 in the display panel 01 are directly connected, and the second discharge terminal 420 and the transmission unit 400 are directly connected, but the embodiments of the present disclosure are not limited thereto.

[0122] Therefore, on the one hand, by arranging a discharge unit in the interval between the adjacent first signal line and the second signal line, and the transmission part of the discharge unit includes a semiconductor material, when static electricity is generated, the static electricity can be transmitted and diffused to the first signal line and the second signal line through the transmission part, thereby reducing the risk of electrostatic damage, which is beneficial to improving the yield of the device and the reliability of electrostatic protection. When no static electricity is generated, the transmission part can reduce the probability of signal crosstalk between the first signal line and the second signal line, which is beneficial to improving the display quality; on the other hand, the structure of the discharge unit is simple, which is beneficial to simplifying the process steps, reducing the etching process, and is easy to manufacture.

[0123] For example, as shown in FIG1 , a signal line 300 in a display panel 01 extends from a display area 100 to a peripheral area 200 . For example, the portion of the signal line 300 located in the display area 100 is connected to a subpixel SP, while the portion of the signal line 300 located in the peripheral area 200 is connected to a discharge unit 400 . For example, the discharge unit 400 may be located only on one side of the display area 100 , but the embodiments of the present disclosure are not limited thereto. For example, the discharge unit 400 may be provided on both sides of the display area 100 .

[0124] For example, as shown in FIG2 , at least two discharge cells 40 are disposed in the gap 350 between the first signal line 310 and the second signal line 320, and the at least two discharge cells 40 are located on the same side of the display area 100. Providing two discharge cells 40 in the same gap 350 on the same side of the display area 100 helps increase electrostatic transmission capability, thereby better protecting the device.

[0125] Of course, referring to FIG2 , the number of discharge units 40 in the gap 350 between the first signal line 310 and the second signal line 320 can be set according to design requirements. For example, when stronger electrostatic protection is required, the number of discharge units 40 provided in the gap 350 can be larger, for example, 3-5, such as 4, but the embodiments of the present disclosure are not limited thereto.

[0126] For example, referring to FIG1 , the interval 350 between the first signal line 310 and the second signal line 320 includes a first sub-interval 3501 and a second sub-interval 3502, respectively located on opposite sides of the display area 100. For example, the number of discharge cells 40 in the first sub-interval 3501 can be the same as the number of discharge cells 40 in the second sub-interval 3502 to facilitate balanced electrostatic discharge capabilities. Of course, if the electrostatic protection requirements for the first sub-interval 3501 and the second sub-interval 3502 differ, the number of discharge cells 40 in the first sub-interval 3501 and the number of discharge cells 40 in the second sub-interval 3502 can also be different.

[0127] For example, as shown in FIG2 , the first discharge terminal 410 and the first signal line 310 are integrally formed, and the second discharge terminal 420 and the second signal line 320 are integrally formed. Thus, the first discharge terminal 410 and the first signal line 310 can be formed in the same process, and the second discharge terminal 420 and the second signal line 320 can be formed in the same process, which simplifies the manufacturing steps and makes the manufacturing process of the first discharge terminal 410 and the second discharge terminal 420 simple and easy to manufacture.

[0128] For example, as shown in Figure 2, the first discharge end 410 protrudes relative to the extension direction of the first signal line 310, and the second discharge end 420 protrudes relative to the extension direction of the second signal line 320. For example, in the embodiments of the present disclosure, the extension direction of the signal line refers to the extension direction of the main portion of the signal line. For example, the extension direction of the first signal line 310 is the same as the extension direction of the second signal line 320. For example, the first signal line 410 and the second signal line 420 both extend along the first direction X, and the first discharge end 410 and the second discharge end 420 both extend along the second direction Y. For example, the protrusion dimension of the first discharge end 410 relative to the first signal line 310 can be equal to the protrusion dimension of the second discharge end 420 relative to the second signal line 320. For example, the protrusion dimension of the first discharge end 410 relative to the first signal line 310 can also be different from the protrusion dimension of the second discharge end 420 relative to the second signal line 320, which is not limited in the embodiments of the present disclosure. The first direction X and the second direction Y are both parallel to the base substrate BS, and the first direction X intersects the second direction Y. For example, the first direction X is perpendicular to the second direction Y.

[0129] For example, as shown in FIG2 , the first discharge end 410 and the second discharge end 420 face each other, and at least a portion of the transmission portion 400 is located between the first discharge end 410 and the second discharge end 420. This facilitates timely electrical connection between the first discharge end 410 and the first signal line 310, and timely electrical connection between the second discharge end 420 and the second signal line 320, when static electricity is generated.

[0130] For example, referring to FIG. 2 , the extending direction of the first signal line 310 and the extending direction of the second signal line 320 may also be the second direction Y, which is not limited in the embodiment of the present disclosure.

[0131] For example, referring to FIG. 2 , in some embodiments, the extension direction of the first signal line 310 may intersect with the extension direction of the second signal line 320. For example, the extension direction of the first signal line 310 may be perpendicular to the extension direction of the second signal line 320. For example, the first signal line 310 may extend along a first direction X, and the second signal line 320 may extend along a second direction Y. The transmission portion 400 is located within the gap between the first signal line 310 and the second signal line 320. For example, the extension direction of the transmission portion 400 may intersect with both the extension direction of the first signal line 310 and the extension direction of the second signal line 320. For example, the angle between the extension direction of the transmission portion 400 and the first direction X may be 30° to 70°, for example, at least one of 30° to 45°, 50° to 60°, or 65° to 70°. For example, the angle between the extension direction of the transmission portion 400 and the second direction Y may be 30° to 70°, for example, at least one of 30° to 45°, 50° to 60°, and 65° to 70°, which is not limited in the embodiments of the present disclosure.

[0132] For example, as shown in FIG2 , the orthographic projection of the first discharge end 410 on the base substrate BS at least partially overlaps with the orthographic projection of the transmission portion 400 on the base substrate BS, and the orthographic projection of the second discharge end 420 on the base substrate BS at least partially overlaps with the orthographic projection of the transmission portion 400 on the base substrate BS. This facilitates electrical connection between the first discharge end 410 and the transmission portion 400, and between the second discharge end 420 and the transmission portion 400, when static electricity is generated.

[0133] For example, as shown in Figures 2 and 3, the first discharge terminal 410 contacts the transmission portion 400, and the second discharge terminal 420 contacts the transmission portion 400. For example, the first discharge terminal 410 and the second discharge terminal 420 are both located on a side of the transmission portion 400 away from the base substrate BS, and both contact the transmission portion 400. In other words, the first discharge terminal 410 and the second discharge terminal 420 can directly overlap the surface of the transmission portion 400 away from the base substrate BS.

[0134] Such a configuration is beneficial to improving the static electricity transmission efficiency between the first discharge end 410 and the transmission unit 400 , and is beneficial to improving the static electricity transmission efficiency between the second discharge end 420 and the transmission unit 400 .

[0135] For example, as shown in Figures 2 and 3 , in the direction in which the transmission portion 400 extends (e.g., the first direction X shown in Figure 2 ), the size of the transmission portion 400 is larger than the size of at least one of the first discharge end 410 and the second discharge end 420. For example, in the first direction X, the size of the first discharge end 410 and the second discharge end 420 are both smaller than the size of the transmission portion 400. For example, in the first direction X, the size of the transmission portion 400 is larger than half the size of the space 350 between the first signal line 310 and the second signal line 320. For example, in the first direction X, the size of the transmission portion 400 is larger than the sum of the sizes of the first discharge end 410 and the second discharge end 420. For example, the length of the transmission portion 400 in its extending direction may be 150 to 180 micrometers, such as at least one of 150 to 160 micrometers, 155 to 165 micrometers, 160 to 170 micrometers, and 165 to 170 micrometers. For example, the width of the transmission portion 400 perpendicular to its extension direction (for example, in the second direction Y) is 15 to 25 microns, for example, it can be at least one of 15 to 25 microns, 15 to 20 microns, 18 to 22 microns and 21 to 24 microns, and the embodiments of the present disclosure are not limited to this.

[0136] Such a configuration is beneficial to enhancing the electrostatic transmission capability of the transmission unit 400, thereby achieving a higher electrostatic transmission effect.

[0137] For example, as shown in Figure 2, the orthographic projection area of ​​the transmission portion 400 on the base substrate BS is larger than the orthographic projection area of ​​the first discharge end 410 on the base substrate BS, and larger than the orthographic projection area of ​​the second discharge end 420 on the base substrate BS. For example, in the first direction X, the dimensions of the first discharge end 410 and the second discharge end 420 are both smaller than the dimensions of the transmission portion 400; and in the second direction Y, the dimensions of the first discharge end 410 and the second discharge end 420 are both smaller than the dimensions of the transmission portion 400. This helps reduce the resistance of the transmission portion 400, thereby increasing the transmitted current and enhancing its electrostatic transmission capability.

[0138] For example, referring to FIG. 2 , at least one of the orthographic projection of the first discharge end 410 and the orthographic projection of the second discharge end 420 on the base substrate BS can be circular, elliptical, rectangular, or triangular, or a combination of these shapes. For example, as shown in FIG. 2 , the orthographic projection of the first discharge end 410 on the base substrate BS is a combination of a rectangle and a semicircle, while the orthographic projection of the second discharge end 420 on the base substrate BS is a combination of a rectangle and a semicircle. For example, the orthographic projection of the end 411 of the first discharge end 410 near the transmission portion 400 on the base substrate BS is a semicircle, while the orthographic projection of a portion of the first discharge end 410 away from the transmission portion 40 on the base substrate BS is a rectangle. For example, the orthographic projection of the end 421 of the second discharge end 420 away from the transmission portion 400 on the base substrate BS is a semicircle, while the orthographic projection of a portion of the second discharge end 420 away from the transmission portion 400 on the base substrate BS is a rectangle. The embodiments of the present disclosure do not limit the shapes of the first and second discharge ends 410 and 420, thereby adapting to different design requirements.

[0139] For example, as shown in Figures 2 and 3, the orthographic projection of the first discharge end 410 on the base substrate BS and the orthographic projection of the second discharge end 420 on the base substrate BS have the same shape, so that the first discharge end 410 and the second discharge end 420 can be structurally consistent, which is beneficial to the process manufacturing and makes the electrostatic transmission effect uniform.

[0140] For example, as shown in Figure 2 , the orthographic projection of the end 411 of the first discharge end 410, which is away from the first signal line 310, on the base substrate BS forms a first semicircle, and the orthographic projection of the end 421 of the second discharge end 420, which is away from the second signal line 320, on the base substrate BS forms a second semicircle. For example, the radius of the first semicircle is 1 to 1.5 microns, and the radius of the second semicircle is 1 to 1.5 microns. For example, the radius of the first semicircle can be equal to the radius of the second semicircle to facilitate structural consistency. For example, the radius of the first semicircle can also be different from the radius of the second semicircle, and this is not limited in the embodiments of the present disclosure.

[0141] According to Gauss's theorem:

[0142] Thus we can get:

[0143] In formula (1) and formula (2), σ e is the charge density, with the unit of C / m; ε0 is the dielectric constant of vacuum; E is the electric field strength, with the unit of V / m; ΔS represents the cross-sectional area in the electric field.

[0144] For example, when two charged balls are connected by a wire and placed in an electrostatic field, according to the principle of electrostatic equilibrium, the electric potentials on the surfaces of the two balls are the same, so we can get:

[0145] Combined with formula (3), the charge density relationship can be derived:

[0146] According to formula (4), the charge density is negatively correlated with the radius. Furthermore, combined with formula (2), the relationship between the electric field strength and the radius can be obtained:

[0147] In formula (5), K is a proportionality constant.

[0148] According to: J = γE (6)

[0149] In formula (6), J is the current density, and its unit is A / m 2 ;γ is the electrical conductivity of the conductor, and its unit is S / m.

[0150] Thus, according to the above formula, the transmission current in the embodiment of the present disclosure can be calculated, namely:

[0151] In formula (7), S is the flow cross-sectional area, and its unit is μm 2 ; R is the radius of curvature of the first semicircle, and its unit is μm; W is the width of the transmission part, that is, the dimension in the second direction Y as shown in Figure 2, and its unit is μm; d is the thickness of the transmission part, that is, the dimension in the direction perpendicular to the substrate, and its unit is μm; L is the length of the transmission part, that is, the dimension in the first direction X as shown in Figure 2, and its unit is μm. In the embodiment of the present disclosure, μm in the above formula represents micrometers.

[0152] Therefore, according to the above formula (6), it can be seen that the radius of the first semicircle (and the radius of the second semicircle) is positively correlated with the transmission current, that is, when the radius of the first semicircle (and the radius of the second semicircle) decreases, it is beneficial to increase the transmission current. Therefore, in order to enhance the electrostatic transmission capability, the radius of the first semicircle and the radius of the second semicircle can be smaller. For example, the radius of the first semicircle can be 1 micron, 1.1 microns, 1.2 microns, 1.3 microns, 1.4 microns or 1.5 microns. For example, the radius of the second semicircle can be 1 micron, 1.1 microns, 1.2 microns, 1.3 microns, 1.4 microns or 1.5 microns, which can be set according to design requirements.

[0153] For example, as shown in Figure 2, the orthographic projection of the first discharge end 410 on the base substrate BS and the orthographic projection of the transmission portion 400 on the base substrate BS form a first overlapping region 401, while the orthographic projection of the second discharge end 420 on the base substrate BS and the orthographic projection of the transmission portion 400 on the base substrate BS form a second overlapping region 402. The area of ​​the first overlapping region 401 is smaller than the area of ​​the orthographic projection of the first discharge end 410 on the base substrate BS, while the area of ​​the second overlapping region 402 is smaller than the area of ​​the orthographic projection of the second discharge end 420 on the base substrate BS. In other words, both the first overlapping region 401 and the second overlapping region 402 are relatively small. For example, the first overlapping region 401 is smaller than the area of ​​the first semicircle, and the second overlapping region 402 is smaller than the area of ​​the second semicircle. For example, the first overlapping region 401 is 1 / 10 to 1 / 3 of the area of ​​the orthographic projection of the first discharge end 410 on the base substrate BS, such as 1 / 8, 1 / 6, 1 / 5, or 1 / 4. For example, the second overlapping area 402 is 1 / 10 to 1 / 3 of the orthographic projection area of ​​the second discharge end 420 on the base substrate BS, such as 1 / 8, 1 / 6, 1 / 5 or 1 / 4.

[0154] For example, as shown in FIG2 , along the extension direction of the transmission portion 400, i.e., the second direction Y shown in FIG2 , the maximum dimension of the first overlapping region 401 is less than 2 microns, and the maximum dimension of the second overlapping region 402 is less than 2 microns. For example, in the second direction Y, the maximum dimension of the first overlapping region 401 can be 1.8 microns, 1.6 microns, 1.2 microns, 1 micron, or 0.8 micron, and the maximum dimension of the second overlapping region 402 can be 1.8 microns, 1.6 microns, 1.2 microns, 1 micron, or 0.8 micron. This arrangement enables the first overlapping region 401 to serve as the "sharp discharge end" of the first discharge end 410, and the second overlapping region 402 to serve as the "sharp discharge end" of the second discharge end 420, thereby increasing the electrostatic transmission current between the transmission portion 400 and the first discharge end 410 and the second discharge end 420, respectively.

[0155] For example, as shown in Figures 1 and 3, the display panel includes a first insulating layer 510, a second insulating layer 520, a pixel defining pattern 550, and an electrode layer 560. The first insulating layer 510 is located on the base substrate BS, and the second insulating layer 520 is located on a side of the first insulating layer 510 away from the base substrate BS. The pixel defining pattern 550 is located on a side of the second insulating layer 520 away from the first insulating layer 510, and the pixel defining pattern 550 is configured to define the light-emitting area of ​​the sub-pixel SP. The electrode layer 560 is located on a side of the pixel defining pattern 550 away from the base substrate BS. For example, in a direction perpendicular to the base substrate BS, that is, in the third direction Z shown in Figure 3, the first insulating layer 510, the second insulating layer 520, the pixel defining pattern 550, and the electrode layer 560 are stacked in sequence.

[0156] For example, referring to Figures 1 and 3, the pixel-defining pattern 550 may include a plurality of openings and a defining portion surrounding the plurality of openings. The sub-pixel SP includes a light-emitting element, and at least a portion of the light-emitting element of the sub-pixel SP is located in the openings of the pixel-defining pattern 550. The pixel-defining pattern 550 defines the light-emitting area of ​​the light-emitting element through its openings. For example, the light-emitting element of the sub-pixel SP may include a portion located in the openings and a portion overlapping the defining portion in a direction perpendicular to the base substrate BS.

[0157] For example, referring to Figures 1 and 3, the electrode layer 560 may be a cathode layer, and the display panel 01 may further include an anode layer and a light-emitting functional layer. The anode layer is located between the pixel-defining pattern 550 and the base substrate BS, and the light-emitting functional layer is located between the anode layer and the electrode layer 560. The openings in the pixel-defining pattern 550 may expose the anode layer, and the exposed anode layer is in contact with the light-emitting functional layer. For clarity, Figure 3 does not show other film layers located between the first insulating layer 510 and the pixel-defining pattern 550.

[0158] 3 , the transmission portion 400 is located between the first insulating layer 510 and the pixel defining pattern 550 . For example, the transmission portion 400 is located on a side of the first insulating layer 510 away from the base substrate BS and contacts the first insulating layer 510 .

[0159] For example, as shown in FIG3 , at least one of the first signal line 310 and the second signal line 320 is located on the same layer as the transmission unit 400. For example, FIG3 illustrates an example in which the first signal line 310 and the second signal line 320 are both located on the same layer as the transmission unit 400. That is, the first signal line 310, the second signal line 320, and the transmission unit 400 are all located on a side of the first insulating layer 510 away from the base substrate BS and are all in contact with the first insulating layer 510. This improves the efficiency of electrostatic transmission between the transmission unit 400 and the first signal line 310 and the second signal line 320, respectively. This also helps simplify the manufacturing steps of the discharge unit 40. For example, the first discharge end 410 and the second discharge end 420 in the discharge unit 40 can be formed on the first insulating layer 510 through the same patterning process as the first signal line 310 and the second signal line 320.

[0160] For example, in some embodiments, referring to FIG3 , one of the first signal line 310 and the second signal line 320 can be located on the same layer as the transmission portion 400, depending on the layout design requirements. For example, the first signal line 310 and the transmission portion 400 can both be located on the first insulating layer 510, while the second signal line 320 can be located on a film layer different from the first insulating layer 510. For example, the second signal line 320 and the transmission portion 400 can both be located on the second insulating layer 520, while the first signal line 310 can be located on a film layer different from the second insulating layer 520. Thus, the first signal line 310 and the second signal line 320 can be flexibly arranged according to different film layer design requirements.

[0161] For example, as shown in Figure 3, the first insulating layer 510 includes a first buffer layer 511 and a second buffer layer 512, which are stacked together. The first buffer layer 511 is closer to the base substrate BS than the second buffer layer 512. The transmission portion 400, the first signal line 310, and the second signal line 320 are all located on a side of the second buffer layer 512 that is away from the base substrate BS and are in contact with the second buffer layer 512. For example, in the third direction Z, the first buffer layer 511 and the second buffer layer 512 are stacked in sequence.

[0162] Such a configuration is beneficial to increasing the size of the first insulating layer 510 in the third direction Z, thereby reducing the impact of damage to the first insulating layer 510 during the process of forming the discharge unit 40. For example, it can alleviate the impact of over-etching on the first insulating layer 510, which is beneficial to reducing the impact on other structures in the first insulating layer 510.

[0163] For example, as shown in FIG3 , the first buffer layer 511 and the second buffer layer 512 can be made of different materials. For example, the first buffer layer 511 can be made of silicon oxynitride, and the second buffer layer 512 can be made of silicon oxide. This allows the first buffer layer 511 to have a stronger ability to block water vapor, while the second buffer layer 512 can reduce surface deterioration of the transmission portion 400.

[0164] For example, as shown in Figure 3, the transmission part 400 is in contact with the second insulating layer 520, that is, no other film layer is set between the transmission part 400 and the second insulating layer 520. This is beneficial to reducing the distance between the transmission part 400 and the electrode layer 560 in the third direction Z, so as to increase the capacitance between the transmission part 400 and the electrode layer 560, thereby facilitating static discharge.

[0165] For example, as shown in Figure 3, the second insulating layer 520 is in contact with the pixel defining pattern 550, that is, no other film layer is set between the second insulating layer 520 and the pixel defining pattern 550, so that the distance between the transmission part 400 and the electrode layer 560 in the third direction Z can be further reduced, and the capacitance between the transmission part 400 and the electrode layer 560 can be further increased to facilitate static discharge.

[0166] For example, as shown in Figure 3, the second insulating layer 520 is located on the side of the transmission portion 400 that is away from the base substrate BS. The orthographic projections of the transmission portion 400, the first discharge end 410, and the second discharge end 420 on the base substrate BS all at least partially overlap with the orthographic projection of the second insulating layer 520 on the base substrate BS. For example, the second insulating layer 520 has a passivating effect. The transmission portion 400, the first discharge end 410, and the second discharge end 420 are all covered by the second insulating layer 520. This effectively protects the surfaces of the transmission portion 400, the first discharge end 410, and the second discharge end 420, ensuring stable electrical properties.

[0167] For example, as shown in FIG3 , the orthographic projection of the first signal line 310 on the base substrate BS at least partially overlaps with the orthographic projection of the second insulating layer 520 on the base substrate BS, and the orthographic projection of the second signal line 320 on the base substrate BS at least partially overlaps with the orthographic projection of the second insulating layer 520 on the base substrate BS. For example, the portion of the first signal line 310 located in the peripheral area 200 and the portion of the second signal line 320 located in the peripheral area 200 are both covered by the second insulating layer 520. This helps simplify the manufacturing steps of the second insulating layer 520, for example, reducing the number of patterning steps to facilitate manufacturing. Furthermore, the second insulating layer 520 can effectively protect the surfaces of the first signal line 310 and the second signal line 320, thereby ensuring good transmission performance and stable electrical characteristics.

[0168] For example, as shown in FIG3 , in a direction perpendicular to the substrate BS, that is, in the third direction Z, the thickness of the first signal line 310 and the thickness of the second signal line 320 are both greater than the thickness of the transmission portion 400. For example, in the third direction Z, the thickness of the first signal line 310 refers to its dimension in that direction, and the thickness of the transmission portion 400 refers to its dimension in that direction. That is, in the third direction Z, the dimension of the first signal line 310 is greater than the dimension of the transmission portion 400, thereby reducing the resistance of the first signal line 310 and the second signal line 320, thereby increasing the current and facilitating electrostatic transmission.

[0169] For example, as shown in FIG3 , in a direction perpendicular to the substrate BS, that is, in the third direction Z, the thickness of the first signal line 310 may be 9-12 times the thickness of the transmission portion 400. For example, in the third direction Z, the thickness of the second signal line 320 may be 9-12 times the thickness of the transmission portion 400. For example, in the third direction Z, the thickness of the first signal line 310 may be 9, 10, 11, or 12 times the thickness of the transmission portion 400. For example, in the third direction Z, the thickness of the second signal line 320 may be 9, 10, 11, or 12 times the thickness of the transmission portion 400. For example, the thickness of the transmission portion 400 perpendicular to the substrate BS may be 0.035-0.050 microns, such as 0.040 microns, 0.038 microns, 0.042 microns, or 0.045 microns. This is not limited in the embodiments of the present disclosure and may be set according to design requirements.

[0170] For example, in some embodiments of the present disclosure, in the third direction Z, the thickness of the first signal line 310 and the thickness of the second signal line 320 may also be basically equal to the thickness of the transmission part 400, so that the transmission part 400 has good transmission characteristics while helping to reduce the total thickness of the display panel 01 in the third direction Z to achieve a lightweight design.

[0171] FIG. 4 is a schematic plan view of another discharge unit provided by at least one embodiment of the present disclosure; and FIG. 5 is a schematic cross-sectional view taken along line BB′ in FIG. 4 .

[0172] For example, FIG4 shows another discharge unit. For the structural features of other film layers in FIG4 , reference can be made to the relevant description of FIG2 in the above embodiment, and no repetitive description is given here.

[0173] For example, as shown in Figures 1 and 4, the plurality of signal lines 300 includes a first signal line 310 and a second signal line 320. A gap 350 is defined between the first signal line 310 and the second signal line 320, and the transmission unit 400 is located within the gap 350. The discharge unit 40 includes a first discharge terminal 410 and a second discharge terminal 420. At least a portion of the first discharge terminal 410 is located between the transmission unit 400 and the first signal line 310, and the first discharge terminal 410 is connected to the first signal line 310. At least a portion of the second discharge terminal 420 is located between the transmission unit 400 and the second signal line 320, and the second discharge terminal 420 is connected to the second signal line 320. Furthermore, the discharge unit 40 also includes a third discharge terminal 430. The plurality of signal lines 300 also includes the third signal line 330. The third discharge terminal 430 is connected to the third signal line 330. The transmission unit 400 is further configured to transmit static electricity to the third signal line 330.

[0174] For example, as shown in Figures 1 and 4 , by providing a third discharge terminal 430 in the discharge unit 40 and connecting the third discharge terminal 430 to the third signal line 330, when static electricity is generated, the transmission unit 400 can transmit static electricity to the first signal line 310 via the first discharge terminal 410 and to the second signal line 320 via the second discharge terminal 420. Furthermore, the transmission unit 400 can also transmit static electricity to the third signal line 330 via the third discharge terminal 430. This configuration increases the number of static electricity transmission channels in the discharge unit 40, thereby enhancing static electricity transmission capabilities and providing better static electricity protection.

[0175] For example, the cross-sectional schematic diagram of the discharge unit 40 along the line AA′ shown in FIG4 can be referred to FIG3 .

[0176] For example, as shown in Figures 2 and 5, the first discharge terminal 410, the second discharge terminal 420, and the third discharge terminal 430 can be located on the same layer. For example, the first discharge terminal 410, the second discharge terminal 420, and the third discharge terminal 430 are all located on the first insulating layer 510, that is, they are all located on the side of the first insulating layer 510 away from the base substrate BS and are all in contact with the first insulating layer 510. Of course, in other embodiments of the present disclosure, the first discharge terminal 410, the second discharge terminal 420, and the third discharge terminal 430 can also be located on a film layer different from the first insulating layer 510, and the embodiments of the present disclosure are not limited to this.

[0177] Such a configuration is beneficial for unifying the static electricity transmission paths formed by the transmission unit 400 and the first discharge end 410, the second discharge end 420, and the third discharge end 430 when static electricity is generated, thereby improving the static electricity transmission efficiency and simplifying the process of manufacturing the first discharge end 410, the second discharge end 420, and the third discharge end 430.

[0178] For example, as shown in Figures 2 and 5 , at least one of the first discharge terminal 410 and the second discharge terminal 420 and the third discharge terminal 430 are located in the same conductive pattern layer. For example, the first discharge terminal 410, the second discharge terminal 420, and the third discharge terminal 430 can all be located in the same conductive pattern layer, that is, they can be formed using the same patterning process. This allows the first discharge terminal 410, the second discharge terminal 420, and the third discharge terminal 430 to be made of the same material, resulting in relatively uniform conductive properties and simplifying the manufacturing process.

[0179] For example, in some embodiments of the present disclosure, the third discharge terminal 430 may be located in the same conductive pattern layer as only one of the first discharge terminal 410 and the second discharge terminal 420, so that the other of the first discharge terminal 410 and the second discharge terminal 420 is located in a different conductive pattern layer. This allows the other of the first discharge terminal 410 and the second discharge terminal 420 to have different conductive properties according to design requirements.

[0180] For example, as shown in Figures 4 and 5 , the third discharge terminal 430 contacts the transmission unit 400. For example, the third discharge terminal 430 is located on a side of the transmission unit 400 that is away from the base substrate BS and contacts the transmission unit 400. In other words, the third discharge terminal 430 can directly overlap the surface of the transmission unit 400 that is away from the base substrate BS. This arrangement helps improve the efficiency of static electricity transmission between the third discharge terminal 430 and the transmission unit 400, as well as between the third discharge terminal 430 and the transmission unit 400.

[0181] For example, as shown in Figures 4 and 5 , the extension direction of the third discharge end 430 intersects the extension direction of the transmission portion 400. For example, the third discharge end 430 extends along the first direction X, and the transmission portion 400 extends along the second direction Y, but the embodiments of the present disclosure are not limited thereto. For example, the angle between the extension direction of the third discharge end 430 and the extension direction of the transmission portion 400 can be 60° to 90°, for example, at least one of 65° to 75°, 70° to 80°, or 85° to 90°, although the embodiments of the present disclosure are not limited thereto.

[0182] For example, as shown in Figures 4 and 5, the first signal line 310 and the second signal line 320 both intersect with the third signal line 330. For example, the first signal line 310 and the second signal line 320 both extend along the first direction X, and the third signal line 330 extends along the second direction Y, but the embodiments of the present disclosure are not limited thereto. For example, the third signal line 330 can be located in a different layer from the first signal line 310 and the second signal line 320 to reduce the risk of signal crosstalk.

[0183] 4 and 5 , the third signal line 330 is configured to transmit a different signal than at least one of the first signal line 310 and the second signal line 320. For example, the first signal line 310 and the second signal line 330 may be configured to transmit the same signal, and the third signal line 330 may transmit a different signal from the first signal line 310. For example, the first signal line 310 and the second signal line 330 may be configured to transmit a gate signal, and the third signal line 330 may be configured to transmit a power supply voltage signal, but the present invention is not limited thereto.

[0184] FIG6 is a schematic plan view of another discharge unit provided by at least one embodiment of the present disclosure; FIG7 is a schematic cross-sectional view taken along line AA′ in FIG6 .

[0185] For example, compared with the discharge unit shown in FIG2 , in the discharge unit 40 shown in FIG6 , the first discharge end 410 and the second discharge end 420 have different shapes, and the display panel in FIG6 further includes a third insulating layer 530 . The remaining structures can refer to the relevant description of FIG2 in the above embodiment and are not repeated here.

[0186] For example, as shown in FIG6 , the orthographic projection of the first discharge end 410 on the base substrate BS is triangular, and the orthographic projection of the second discharge end 420 on the base substrate BS is triangular. The orthographic projection of the first discharge end 410 on the base substrate BS and the orthographic projection of the transmission portion 400 on the base substrate BS have a first overlapping region 401, and the orthographic projection of the second discharge end 420 on the base substrate BS and the orthographic projection of the transmission portion 400 on the base substrate BS have a second overlapping region 402. Both the first overlapping region 401 and the second overlapping region 402 are triangular.

[0187] For example, as shown in Figures 6 and 7, the display panel in which the discharge cell 40 in Figure 6 is located further includes a third insulating layer 530. In the third direction Z, the second insulating layer 520, the third insulating layer 530, and the pixel defining pattern 550 are stacked in sequence. The third insulating layer 530 is located between the second insulating layer 520 and the pixel defining pattern 550. The orthographic projection of the discharge cell 40 on the base substrate BS at least partially overlaps with the orthographic projection of the third insulating layer 530 on the base substrate BS. For example, the third insulating layer 530 is located on a side of the second insulating layer 520 away from the base substrate BS, and the third insulating layer 530 is in contact with the second insulating layer 520. For example, the third insulating layer 530 covers the second insulating layer 520. For example, the third insulating layer 530 can serve as a planarization layer. By providing the third insulating layer 550, the surface of structures such as the discharge cell 40 can be planarized.

[0188] FIG8 is a partial cross-sectional schematic diagram of yet another discharge unit provided by at least one embodiment of the present disclosure.

[0189] For example, a partial plan view of the display panel where the discharge unit shown in FIG8 is located can be seen in FIG6 . For example, compared to the display panel shown in FIG6 , in the display panel shown in FIG8 , the first insulating layer 510 is a single-layer arrangement, that is, the first insulating layer 510 includes only one film layer. For example, in FIG8 , the thickness of the first insulating layer 510 in the display panel in the third direction Z is relatively large, and the first insulating layer 510 can be made of silicon oxide. Thus, the first insulating layer 510 can be used to reduce the deterioration of the surface of the transmission part 400 and the like, while simplifying the manufacturing process of the first insulating layer 510. For the remaining structures of the display panel shown in FIG8 , reference can be made to the relevant description of FIG2 in the above embodiment, and no repeated description will be given here.

[0190] FIG9 is a partial cross-sectional schematic diagram of yet another discharge unit provided by at least one embodiment of the present disclosure.

[0191] For example, the partial plan view of the display panel in which the discharge unit shown in FIG9 is located can be seen in FIG6 . For example, compared to the display panel shown in FIG6 , in the display panel shown in FIG9 , the first signal line 310 and the second signal line 320 are located on different layers from the transmission unit 400 , and the display panel further includes a fourth insulating layer 540 . For the remaining structures, reference can be made to the relevant descriptions of the above embodiments and are not repeated here.

[0192] For example, as shown in FIG9 , a first insulating layer 510, a fourth insulating layer 540, and a second insulating layer 520 are stacked along a direction perpendicular to the base substrate BS, i.e., a third direction Z. The fourth insulating layer 540 is located between the first insulating layer 510 and the second insulating layer 520. For example, the fourth insulating layer 540 is in contact with each of the first and second insulating layers 510, 520. The transmission portion 400 is located on a side of the first insulating layer 510 away from the base substrate BS and is in contact with the first insulating layer 510. The first signal line 310 and the second signal line 320 are both located on a side of the fourth insulating layer 540 away from the base substrate BS and are in contact with the fourth insulating layer 540. As shown in FIG9 , the first signal line 310 and the second signal line 320 are located in the same layer, and at least a portion of the fourth insulating layer 540 is located between the first signal line 310 and the transmission portion 400, and between the second signal line 320 and the transmission portion 400. For example, when static electricity is generated, part of the fourth insulating layer 540 located between the first signal line 310 and the transmission part 400 will be broken down by static electricity, so that the first signal line 310 can be connected to the transmission part 400; part of the fourth insulating layer 540 located between the second signal line 320 and the transmission part 400 will be broken down by static electricity, so that the second signal line 320 can be connected to the transmission part 400. At this time, the first signal line 310, the transmission part 400 and the second signal line 320 can be connected in sequence to perform static electricity transmission, so that the static electricity is transmitted and diffused.

[0193] For example, as shown in FIG9 , the first discharge end 410 and the first signal line 310 are integrally formed, and the second discharge end 420 and the second signal line 320 are integrally formed. The orthographic projection of the first discharge end 410 on the base substrate BS overlaps with the orthographic projection of the transmission portion 400 on the base substrate BS, and the orthographic projection of the second discharge end 420 on the base substrate overlaps with the orthographic projection of the transmission portion 400 on the base substrate BS. This arrangement facilitates communication between the first discharge end 410 and the transmission portion 400 when a portion of the fourth insulating layer 540 between the first signal line 310 and the transmission portion 400 is electrostatically broken down. This arrangement also facilitates communication between the second discharge end 420 and the transmission portion 400 when a portion of the fourth insulating layer 540 between the second signal line 320 and the transmission portion 400 is electrostatically broken down.

[0194] For example, in some embodiments of the present disclosure, one of the first signal line 310 and the second signal line 320 may be located on the same layer as the transmission part 400, for example, both may be located on the first insulating layer 510; the other one of the first signal line 310 and the second signal line 320 may be located on a different layer, for example, may be located on the fourth insulating layer 540, thereby helping to improve the electrical connection efficiency between one of the first signal line 310 and the second signal line 320 and the transmission part 400.

[0195] For example, as shown in Figure 9, the transmission portion 400 is located between the first insulating layer 510 and the fourth insulating layer 540, and the transmission portion 400 is covered by the fourth insulating layer 540. For example, the surface of the transmission portion 400 away from the base substrate BS and the side surface of the transmission portion 400 are in contact with the fourth insulating layer 540. Therefore, the surface of the transmission portion 400 can be protected by the fourth insulating layer 540 to reduce adverse phenomena such as surface deterioration.

[0196] Fig. 10 is a partial cross-sectional schematic diagram of another discharge cell provided by at least one embodiment of the present disclosure. Fig. 11 is another cross-sectional schematic diagram of the display panel shown in Fig. 10 .

[0197] For example, the partial plan view of the display panel shown in FIG10 can refer to FIG6. For example, FIG10 can be a cross-sectional view taken along line AA' in FIG6, and FIG11 can be a cross-sectional view taken along line BB' in FIG6.

[0198] For example, as shown in FIG10 , at least a portion of the orthographic projection of the first signal line 310 on the base substrate BS is located outside the orthographic projection of the second insulating layer 520 on the base substrate BS, and at least a portion of the orthographic projection of the second signal line 320 on the base substrate BS is located outside the orthographic projection of the second insulating layer 520 on the base substrate BS. For example, at least a portion of the surface of the first signal line 310 away from the base substrate BS is not covered by the second insulating layer 520, and at least a portion of the surface of the second signal line 320 away from the base substrate BS is not covered by the second insulating layer 520. This arrangement helps reduce the distance between the first signal line 310 and the electrode layer 560 in the third direction Z, and also helps reduce the distance between the second signal line 320 and the electrode layer 560 in the third direction Z. This increases the capacitance between the first signal line 310 and the electrode layer 560, and also increases the capacitance between the second signal line 320 and the electrode layer 560. This, in turn, improves the electrostatic transmission capability of the first signal line 310 and the second signal line 320.

[0199] For example, as shown in FIG10 , the pixel-defining pattern 550 includes a first pixel-defining portion 5501 and a second pixel-defining portion 5502. The first pixel-defining portion 5501 is located on the side of the transmission portion 400 away from the base substrate BS. The orthographic projection of the first pixel-defining portion 5501 on the base substrate BS overlaps with the orthographic projection of the transmission portion 400 on the base substrate BS, while the orthographic projection of the second pixel-defining portion 5502 on the base substrate BS does not overlap with the orthographic projection of the transmission portion 400 on the base substrate BS. For example, the first pixel-defining portion 5501 and the second pixel-defining portion 5502 are connected. For example, the first pixel-defining portion 5501 and the second pixel-defining portion 5502 are integrally formed. For example, the orthographic projection of the transmission portion 400 on the base substrate BS completely falls within the orthographic projection of the first pixel-defining portion 5501 on the base substrate BS. For example, the orthographic projections of the first discharge terminal 410 and the second discharge terminal 420 on the base substrate BS both fall within the orthographic projection of the first pixel-defining portion 5501 on the base substrate BS.

[0200] For example, as shown in FIG10 , in a direction perpendicular to the base substrate BS, the thickness of the first pixel defining portion 5501 is thinner than the thickness of the second pixel defining portion 5502. For example, the surface of the first pixel defining portion 5501 away from the base substrate BS is closer to the transmission portion 400 than the surface of the second pixel defining portion 5502 away from the base substrate BS. This arrangement helps reduce the distance between the transmission portion 400 and the electrode layer 560 in the third direction Z, thereby increasing the capacitance between the transmission portion 400 and the electrode layer 560, thereby enhancing the static electricity transmission capability of the transmission portion 400.

[0201] For example, as shown in FIG10 , the electrode layer 560 includes an electrode portion 5601 located on a side of the first pixel-defining portion 5501 that is away from the base substrate BS. The orthographic projection of the electrode portion 5601 on the base substrate BS overlaps with the orthographic projection of the transmission portion 400 on the base substrate BS. The electrode layer 560 has a recess 5600 in the first pixel-defining portion 5501. For example, the orthographic projection of the electrode portion 5601 on the base substrate BS falls within the orthographic projection of the first pixel-defining portion 5501 on the base substrate BS. For example, the orthographic projection of the electrode portion 5601 on the base substrate BS can overlap with the orthographic projection of the first pixel-defining portion 5501 on the base substrate BS. For example, the recess 5600 in the first pixel-defining portion 5501 brings the surface of the electrode portion 5601 away from the base substrate BS closer to the transmission portion 400, thereby increasing the capacitance between the transmission portion 400 and the electrode portion 5601, thereby enhancing the electrostatic transmission capability of the transmission portion 400.

[0202] For example, as shown in FIG11 , the first insulating layer 510 includes a first buffer layer 511 and a second buffer layer 512 stacked together, with the first buffer layer 511 being closer to the base substrate BS than the second buffer layer 512. The second buffer layer 512 includes a first buffer portion 5121 and a second buffer portion 5122. The transmission portion 400 is located on the side of the first buffer portion 5121 that is away from the base substrate BS. The transmission portion 400 is in contact with the first buffer portion 5121, and the orthographic projection of the second buffer portion 5122 on the base substrate BS does not overlap with the orthographic projection of the transmission portion 400 on the base substrate BS. For example, the first buffer portion 5121 and the second buffer portion 5122 are integrally formed. For example, the transmission portion 400 and the second buffer portion 5122 do not contact each other. For example, the orthographic projection of the transmission portion 400 on the base substrate BS completely overlaps with the orthographic projection of the first buffer portion 5121 on the base substrate BS. For example, the orthographic projection of the transmission portion 400 on the base substrate BS falls within the orthographic projection of the first buffer portion 5121 on the base substrate BS.

[0203] For example, as shown in FIG11 , in a direction perpendicular to the base substrate BS, i.e., in the third direction Z, the first buffer portion 5121 includes a first surface 5123 proximate to the electrode layer 560, and the second buffer portion 5122 includes a second surface 5124 proximate to the electrode layer 560, with the first surface 5123 being further away from the base substrate BS than the second surface 5124. For example, in the third direction Z, at least a portion of the first buffer portion 5121 protrudes relative to the second buffer portion 5122, resulting in the first buffer portion 5121 having a protruding structure. For example, the transmission portion 400 may be located on the protruding structure of the first buffer portion 5121. This arrangement further reduces the distance between the transmission portion 400 and the electrode layer 560 in the third direction Z, thereby increasing the capacitance between the transmission portion 400 and the electrode layer 560 and enhancing the electrostatic transmission capability of the transmission portion 400.

[0204] For the remaining structural features of the display panels shown in FIG. 10 and FIG. 11 , reference may be made to the relevant descriptions of the above embodiments, and will not be repeated here.

[0205] 12 is a plan view of another discharge unit according to at least one embodiment of the present disclosure; FIG13 is a cross-sectional view of the display panel taken along line AA′ in FIG12 ; and FIG14 is a cross-sectional view of the display panel taken along line BB′ in FIG12 .

[0206] For example, as shown in FIG12 , the display panel includes a groove 700. At least a portion of the transmission portion 400 is located within the groove 700. The pixel defining pattern 550 fills the groove 700 and covers the transmission portion 400. For example, the orthographic projection area of ​​the transmission portion 400 on the base substrate BS is smaller than the orthographic projection area of ​​the groove 700 on the base substrate BS. For example, the orthographic projection of the transmission portion 400 on the base substrate BS completely falls within the orthographic projection of the groove 700 on the base substrate BS. For example, the groove 700 is formed by removing a portion of at least one insulating layer in the display panel.

[0207] For example, as shown in FIG13 , the pixel defining pattern 550 is located on a side of the transmission portion 400 that is away from the base substrate BS. For example, the pixel defining pattern 550 does not contact the transmission portion 400. That is, another film layer may be disposed between the pixel defining pattern 550 and the transmission portion 400. The display panel in FIG12 is described by taking the second insulating layer 520 disposed between the pixel defining pattern 550 and the transmission portion 400 as an example, but the present invention is not limited thereto.

[0208] For example, as shown in FIG14 , in a direction parallel to the base substrate BS and perpendicular to the extension direction of the transmission portion 400, that is, in a first direction X, the width of the transmission portion 400 is smaller than the width of the groove 700, and a first gap M1 is defined between the transmission portion 400 and the inner wall of the groove 700. For example, in the first direction X, the transmission portion 400 may be located in the middle of the groove 700, but is not limited to this. For example, in the first direction X, the minimum distance between the transmission portion 400 and the inner wall of the groove 700 is the first gap M1. For example, the first gap M1 may be 10 to 30 microns, for example, at least one of 10 to 20 microns, 15 to 25 microns, 20 to 30 microns, 18 to 28 microns, and 25 to 30 microns.

[0209] For example, as shown in FIG13 , the first insulating layer 510 includes a first buffer layer 511 and a second buffer layer 512 stacked together, with the first buffer layer 511 being closer to the base substrate BS than the second buffer layer 512. The transmission portion 400, the first signal line 310, and the second signal line 320 are all located on a side of the second buffer layer 512 away from the base substrate BS and are in contact with the second buffer layer 512.

[0210] For example, as shown in FIG14 , the second buffer layer 512 includes a first portion 5111 located within the groove 700. A second gap M2 is defined between at least a portion of the first portion 5111 and the inner wall of the groove 700. The transmission portion 400 is located on a side of the first portion 5111 away from the base substrate BS and in contact with the first portion 5111. The pixel-defining pattern 550 covers the first portion 5111. For example, in the first direction X, the minimum distance between the first portion 5111 and the inner wall of the groove 700 is the second gap M2. For example, the second gap M2 can be smaller than the first gap M1. For example, the orthographic projection of the transmission portion 400 on the base substrate BS covers the orthographic projection of the first portion 5111 on the base substrate BS. For example, the orthographic projection area of ​​the transmission portion 400 on the base substrate BS can be substantially the same as the orthographic projection area of ​​the first portion 5111 on the base substrate BS. For example, the orthographic projection of the pixel-defining pattern 550 on the base substrate BS covers the orthographic projection of the first portion 5111 on the base substrate BS. For example, the orthographic projection area of ​​the pixel defining pattern 550 on the base substrate BS is greater than or equal to the orthographic projection area of ​​the first portion 5111 on the base substrate BS. For example, the orthographic projection area of ​​the pixel defining pattern 550 on the base substrate BS is greater than or equal to the orthographic projection area of ​​the transmission portion 400 on the base substrate BS.

[0211] For example, as shown in FIG14 , the second insulating layer 520 includes a second portion 5201 positioned within the recess 700. A third gap M3 is defined between at least a portion of the second portion 5201 and the inner wall of the recess 700. The first portion 5111, the transmission portion 400, and the second portion 5201 are stacked in a direction perpendicular to the base substrate BS to form a protrusion 750. The pixel-defining pattern 550 covers the protrusion 750. For example, the second portion 5201 is positioned on a side of the transmission portion 400 that is away from the base substrate BS and contacts the transmission portion 400. For example, in the first direction X, the minimum distance between the second portion 5201 and the inner wall of the recess 700 is the third gap M3. For example, the transmission portion 400 is positioned between the first portion 5111 and the second portion 5201. For example, the second portion 5201 contacts the pixel-defining pattern 550 and is spaced apart from the electrode layer 560. For example, the size of the first portion 5111 in the first direction X, the size of the transmission portion 400 in the first direction X, and the size of the second portion 5201 in the first direction X are substantially equal.

[0212] Such a configuration can separate the transmission part 400 and the insulating layers outside the groove 700 (such as the first insulating layer 510, the second insulating layer 520 and the third insulating layer 530) from each other, so as to reduce the risk of the insulating layers outside the groove 700 damaging the structure of the transmission part 400 during patterning and other processes, thereby ensuring the structural integrity of the transmission part 400 and reducing the risk of its surface deterioration.

[0213] For example, as shown in FIG14 , the orthographic projection of the second portion 5201 on the base substrate BS falls within the orthographic projection of the transmission portion 400 on the base substrate BS, and also falls within the orthographic projection of the first portion 5111 on the base substrate BS. For example, the orthographic projection area of ​​the second portion 5201 on the base substrate BS is smaller than the orthographic projection area of ​​the transmission portion 400 on the base substrate BS, and the orthographic projection area of ​​the transmission portion 400 on the base substrate BS is smaller than the orthographic projection area of ​​the first portion 5111 on the base substrate BS. For example, the dimension of the first portion 5111 in the first direction X can be larger than the dimension of the transmission portion 400 in the first direction X, and the dimension of the transmission portion 400 in the first direction X can be larger than the dimension of the second portion 5201 in the first direction X. This allows the boss 750 to have a stable structure, reducing the risk of tilting.

[0214] For example, as shown in Figures 12 and 13 , at least a portion of the first discharge end 410 is located within the groove 700, and at least a portion of the second discharge end 420 is located within the groove 700. For example, the edge of the groove 700 shown in Figure 12 represents the opening edge of the pixel defining pattern 550 in the groove 700, as shown by the opening edge K in Figures 13 and 14 . This arrangement facilitates electrical connection between the first discharge end 410 and the transmission unit 400, and facilitates electrical connection between the second discharge end 420 and the transmission unit 400, when static electricity is generated.

[0215] For example, as shown in FIG14 , the pixel-defining pattern 550 includes a first pixel-defining portion 5501 and a second pixel-defining portion 5502. The first pixel-defining portion 5501 is located on a side of the transmission portion 400 that is away from the base substrate BS. The orthographic projection of the first pixel-defining portion 5501 on the base substrate BS overlaps with the orthographic projection of the transmission portion 400 on the base substrate BS, while the orthographic projection of the second pixel-defining portion 5502 on the base substrate BS does not overlap with the orthographic projection of the transmission portion 400 on the base substrate BS. For example, the second pixel-defining portion 5502 includes a sub-defining portion 5512 located within the groove 700. In a direction perpendicular to the base substrate BS, the thickness N1 of the first pixel-defining portion 5501 is less than the thickness N2 of the sub-defining portion 5512. For example, the first pixel-defining portion 5501 is located on a side of the second portion 5201 that is away from the base substrate BS and contacts the second portion 5201. Meanwhile, the first pixel defining portion 5501 is located between the second portion 5201 and the electrode layer 560 , and the first pixel defining portion 5501 contacts the electrode layer 560 . For example, the portion of the second pixel defining portion 5502 located in the groove 700 is the sub-defining portion 5512 .

[0216] By making the thickness N1 of the first pixel defining portion 5501 located on the side of the boss 750 away from the base substrate BS smaller and smaller than the thickness N2 of the sub-defining portion 5512 located in the groove 700, the distance between the transmission portion 400 and the electrode layer 560 can be reduced, thereby increasing the capacitance between the transmission portion 400 and the electrode layer 560, which is conducive to enhancing the electrostatic transmission capability of the transmission portion 400.

[0217] For example, as shown in Figure 14, in the direction perpendicular to the base substrate BS, that is, in the third direction Z, the thickness N1 of the first pixel defining portion 5501 is 1 / 8-1 / 10 of the thickness N2 of the sub-defining portion 5512, for example, it can be 1 / 8, 1 / 9 or 1 / 10.

[0218] For example, as shown in FIG14 , the display panel further includes a third insulating layer 530, and the second insulating layer 520, the third insulating layer 530, and the pixel defining pattern 550 are stacked, with the third insulating layer 530 located between the second insulating layer 520 and the pixel defining pattern 550. The third insulating layer 530 is located on the outer side of the groove 700 away from the transmission portion 400. That is, the third insulating layer 530 is not disposed in the groove 700, so that the boss 750 and the third insulating layer 530 are spaced apart from each other. This can reduce the risk of damage to the boss 750 caused by the third insulating layer 530 during certain patterning processes and help reduce the risk of deterioration of the surface of the transmission portion 400.

[0219] For example, as shown in FIG14 , the second buffer layer 512 includes a first sidewall B1 facing the transmission portion 400, and the first sidewall B1 has a first slope angle α1 with a plane. For example, the plane is parallel to the base substrate BS and perpendicular to the third direction Z. For example, the second insulating layer 520 includes a second sidewall B2 facing the transmission portion 400, and the second sidewall B2 has a second slope angle α2 with the plane, and the first slope angle α1 is smaller than the second slope angle α2. For example, when the first sidewall B1 is a curved surface with an arc, the first slope angle α1 is the maximum angle between a tangent plane of the first sidewall B1 and the plane parallel to the base substrate BS. For example, when the second sidewall B2 is a curved surface with an arc, the second slope angle α2 is the maximum angle between a tangent plane of the second sidewall B2 and the plane parallel to the base substrate BS.

[0220] By making the first slope angle α1 smaller than the second slope angle α2 , the second buffer layer 512 can be provided with a larger opening area, thereby further enlarging the opening of the second insulating layer 520 .

[0221] For example, as shown in FIG14 , the third insulating layer 530 includes a third sidewall B3 facing the transmission portion 400. The third sidewall B3 has a third slope angle α3 with the aforementioned plane, and the second slope angle α2 is greater than the third slope angle α3. For example, when the third sidewall B3 is a curved surface, the third slope angle α3 is the maximum angle between a tangent plane of the third sidewall B3 and the aforementioned plane parallel to the base substrate BS. By making the third slope angle α3 greater than the second slope angle α2, the groove 700 has a larger opening area and the third insulating layer 530 has a smooth third sidewall B3 at the groove 700, facilitating manufacturing.

[0222] For example, as shown in Figure 14, the first slope angle α1 is less than 30 degrees, the second slope angle α2 is 30-70 degrees, and the third slope angle α3 is less than 30 degrees. For example, the first slope angle α1 can be at least one of 5-30 degrees, 15-20 degrees, 12-22 degrees, 18-28 degrees, 25-30 degrees, and 23-29 degrees. For example, the second slope angle α2 can be at least one of 30-40 degrees, 35-45 degrees, 40-50 degrees, 45-60 degrees, 55-70 degrees, 35-50 degrees, and 60-70 degrees. For example, the third slope angle α3 can be at least one of 5-30 degrees, 12-22 degrees, 15-20 degrees, 18-28 degrees, 23-29 degrees, and 25-30 degrees.

[0223] For example, for the remaining structural features of the discharge unit shown in FIG12 , reference may be made to the relevant description of FIG6 in the above embodiment, and will not be repeated here.

[0224] FIG15 is a schematic plan view of another discharge unit provided by at least one embodiment of the present disclosure; FIG16 is a schematic cross-sectional view of the display panel taken along line AA′ in FIG15 .

[0225] For example, the display panel shown in FIG15 has different discharge cells than the display panel shown in FIG12 , but the remaining structures are the same or substantially the same. For example, the cross-sectional view of the display panel taken along line BB′ in FIG15 can be found in FIG14 above, and a repeated description thereof will not be given here.

[0226] For example, as shown in FIG15 , the orthographic projection of the first discharge end 410 on the base substrate BS does not overlap with the orthographic projection of the transmission portion 400 on the base substrate BS, and the orthographic projection of the second discharge end 420 on the base substrate BS does not overlap with the orthographic projection of the transmission portion 400 on the base substrate BS. For example, in the second direction Y, the first discharge end 410 is spaced apart from the transmission portion 400, and the second discharge end 420 is spaced apart from the transmission portion 400.

[0227] For example, as shown in FIG15 , the first discharge terminal 410, the second discharge terminal 420, and the transmission portion 400 are all located on the second buffer layer 512. For example, when static electricity is generated, the portion of the second insulating layer 520 located between the first discharge terminal 410 and the transmission portion 400 is electrostatically broken down, and the portion of the second insulating layer 520 located between the second discharge terminal 420 and the transmission portion 400 is electrostatically broken down, thereby allowing the first discharge terminal 410 to communicate with the transmission portion 400, and allowing the second discharge terminal 420 to communicate with the transmission portion 400.

[0228] For example, as shown in FIG15 , in the direction in which the transmission portion 400 extends, i.e., in the second direction Y, the minimum distance between the transmission portion 400 and the first discharge end 410, and the minimum distance between the transmission portion 400 and the second discharge end 420, are both less than 2 microns. For example, in the second direction Y, the minimum distance between the transmission portion 400 and the first discharge end 410 can be 0.8 to 2 microns, such as 1 micron, 1.3 microns, 1.5 microns, or 1.8 microns. For example, in the second direction Y, the minimum distance between the transmission portion 400 and the second discharge end 420 can be 0.8 to 2 microns, such as 1 micron, 1.3 microns, 1.5 microns, or 1.8 microns. This facilitates electrical connection between the first discharge end 410 and the transmission portion 400, and facilitates electrical connection between the second discharge end 420 and the transmission portion 400.

[0229] 17 is a plan view of another discharge unit according to at least one embodiment of the present disclosure; FIG18 is a cross-sectional view of the display panel taken along line AA′ in FIG17 ; and FIG19 is a cross-sectional view of the display panel taken along line BB′ in FIG17 .

[0230] For example, compared with the display panel shown in FIG15 , the discharge units in the display panel shown in FIG17 are different, and the rest of the structures are the same or substantially the same. For details, please refer to the relevant description of FIG15 in the above embodiment, which will not be repeated here.

[0231] For example, as shown in FIG17 , the discharge unit 40 further includes a third discharge terminal 430, and the plurality of signal lines 300 further include a third signal line 330. The third discharge terminal 430 is connected to the third signal line 330, and the transmission unit 400 is further configured to transmit static electricity to the third signal line 330. By including the third discharge terminal 430 in the discharge unit 40, when static electricity is generated, the transmission unit 400 can not only transmit static electricity to the first signal line 310 via the first discharge terminal 410, to the second signal line 320 via the second discharge terminal 420, but also to the third signal line 330 via the third discharge terminal 430. This configuration increases the number of static electricity transmission channels in the discharge unit 40, thereby enhancing static electricity transmission capabilities and providing better static electricity protection.

[0232] For example, as shown in FIG17 , the transmission portion 400 includes a main portion 450 and a protruding portion 460. The protruding portion 460 is connected to the main portion 450 and protrudes from the main portion 450. At least a portion of the third discharge terminal 430 is located between the protruding portion 460 and the third signal line 330. For example, the main portion 450 and the protruding portion 460 are integrally formed. For example, the third discharge terminal 430 and the third signal line 330 are integrally formed.

[0233] For example, as shown in FIG. 17 , the orthographic projection of the transmission portion 400 on the base substrate BS is in a “T” shape, thereby facilitating the formation of an electrostatic transmission channel between the transmission portion 400 and the third discharge end 430 .

[0234] Of course, in some embodiments of the present disclosure, the transmission portion 400 may also have other shapes, which is not limited in the embodiments of the present disclosure.

[0235] For example, as shown in FIG17 , the orthographic projection of the first discharge terminal 410 on the base substrate BS and the orthographic projection of the transmission portion 400 on the base substrate BS form a first overlapping region 401. The orthographic projection of the second discharge terminal 420 on the base substrate BS and the orthographic projection of the transmission portion 400 on the base substrate BS form a second overlapping region 402. The area of ​​the first overlapping region 401 is smaller than the area of ​​the orthographic projection of the first discharge terminal 410 on the base substrate BS, and the area of ​​the second overlapping region 402 is smaller than the area of ​​the orthographic projection of the second discharge terminal 420 on the base substrate BS. At least a portion of the third discharge terminal 430 is located within the groove 700. For example, the orthographic projection of the third discharge terminal 430 on the base substrate BS and the orthographic projection of the transmission portion 400 on the base substrate BS form a third overlapping region 403. The area of ​​the third overlapping region 403 is smaller than the area of ​​the orthographic projection of the third discharge terminal 430 on the base substrate BS.

[0236] For example, as shown in FIG17 , the first overlapping region 401 , the second overlapping region 402 , and the third overlapping region 403 are all located in the groove 700 . Thus, when static electricity is generated, it is facilitated to form an electrical connection between the first discharge end 410 and the transmission portion 400 , between the second discharge end 420 and the transmission portion 400 , and between the third discharge end 430 and the transmission portion 400 .

[0237] For example, as shown in Figures 18 and 19, the first discharge terminal 410, the second discharge terminal 420, and the third discharge terminal 430 are all located on the side of the transmission portion 400 away from the base substrate BS and are all in contact with the transmission portion 400. As shown in Figure 19, the third discharge terminal 430 and the third signal line 330 are located on different film layers. The third signal line 330 is located on the base substrate BS and is in contact with the base substrate BS. However, the embodiment of the present disclosure does not limit the location of the third signal line 330. The third discharge terminal 430 is connected to the third signal line 330 via a via H that penetrates the first insulating layer 510. Of course, in some embodiments of the present disclosure, the third discharge terminal 430 and the third signal line 330 can also be located on the same layer, and the two can be an integrated structure, which can be set according to the actual layout space and film layer configuration requirements.

[0238] 20 is a plan view of another discharge unit provided by at least one embodiment of the present disclosure; FIG21 is a cross-sectional view of the display panel taken along line AA' in FIG20; and FIG22 is a cross-sectional view of the display panel taken along line BB' in FIG20.

[0239] For example, compared with the display panel shown in FIG17 , the discharge cells in the display panel shown in FIG20 are different, while the rest of the structures are the same or substantially the same.

[0240] For example, as shown in FIG20 , the orthographic projection of the first discharge end 410 on the base substrate BS does not overlap with the orthographic projection of the transmission portion 400 on the base substrate BS, the orthographic projection of the second discharge end 420 on the base substrate BS does not overlap with the orthographic projection of the transmission portion 400 on the base substrate BS, and the orthographic projection of the third discharge end 430 on the base substrate BS does not overlap with the orthographic projection of the transmission portion 400 on the base substrate BS. For example, the first discharge end 410 is spaced apart from the transmission portion 400, the second discharge end 420 is spaced apart from the transmission portion 400, and the third discharge end 430 is spaced 350 meters apart from the transmission portion 400.

[0241] For example, as shown in Figures 21 and 22, in the extension direction of the transmission portion 400, that is, the second direction Y, the minimum distance between the transmission portion 400 and the first discharge end 410, and the minimum distance between the transmission portion 400 and the second discharge end 420 are both less than 2 microns; in the first direction X, the minimum distance between the transmission portion 400 and the third discharge end 430 is both less than 2 microns, for example, can be 1 micron, 1.3 microns, 1.5 microns, or 1.8 microns, to facilitate electrical connection between the first discharge end 410, the second discharge end 420, and the third discharge end 430 and the transmission portion 400, respectively.

[0242] For example, as shown in FIG21 , the transmission portion 400 is located between the first insulating layer 510 and the second insulating layer 520, and the transmission portion 400 contacts the first insulating layer 510 and the second insulating layer 520, respectively. For example, the display panel further includes a fourth insulating layer 540, which is located between the first insulating layer 510 and the second insulating layer 520. For example, as shown in FIG21 and FIG22 , the first signal line 310, the second signal line 320, and the third signal line 330 are disposed on the fourth insulating layer 540. For example, the orthographic projection of at least one of the first signal line 310, the second signal line 320, and the third signal line 330 on the base substrate BS falls within the orthographic projection of the fourth insulating layer 540 on the base substrate BS.

[0243] For example, as shown in Figures 21 and 22 , the orthographic projection of the transmission portion 400 on the base substrate BS does not overlap with the orthographic projection of the fourth insulating layer 540 on the base substrate BS. For example, the fourth insulating layer 540 and the transmission portion 400 are spaced apart in the first direction X. Consequently, the surface of the first signal line 310 away from the base substrate BS is closer to the electrode layer 560 than the transmission portion 400, the surface of the second signal line 320 away from the base substrate BS is closer to the electrode layer 560 than the transmission portion 400, and the surface of the third signal line 330 away from the base substrate BS is closer to the electrode layer 560 than the transmission portion 400. This facilitates increasing the capacitance between the first signal line 310 and the electrode layer 560, the capacitance between the second signal line 320 and the electrode layer 560, and the capacitance between the third signal line 330 and the electrode layer 560, thereby enhancing the electrostatic transmission capabilities of the first signal line 310, the second signal line 320, and the third signal line 330.

[0244] FIG23 is a schematic plan view of yet another display panel provided by at least one embodiment of the present disclosure.

[0245] For example, as shown in FIG23 , the display panel includes a plurality of gate lines SL extending along a first direction X, and a plurality of data lines DL extending along a second direction Y. Adjacent data lines DL are spaced apart from each other, and adjacent gate lines SL are spaced apart from each other. For example, the data lines DL are configured to transmit data signals, and the gate lines SL are configured to transmit gate signals.

[0246] 23 , the display panel includes a display area 100 and a peripheral area 200, and a plurality of discharge cells 40 are sequentially arranged along the circumference of the display area 100. For example, adjacent discharge cells 40 are connected to each other, so that the plurality of discharge cells 40 surround the display area.

[0247] For example, as shown in FIG. 23 , in the peripheral region 200, discharge cells 40 are provided between adjacent gate lines, discharge cells 40 are provided between adjacent data lines, and discharge cells 40 are provided between adjacent gate lines and data lines. Adjacent discharge cells 40 are connected to form a ring. For example, the orthographic projections of the multiple discharge cells 40 on the base substrate BS form a closed ring, thereby facilitating the transmission and diffusion of static electricity along a circle of the display area 100 in the peripheral region 200.

[0248] FIG. 24 is a schematic plan view of yet another discharge unit provided by at least one embodiment of the present disclosure.

[0249] For example, as shown in FIG24 , the display panel includes a display area 100 and a peripheral area 200 , and a plurality of discharge units 40 are sequentially arranged along the circumference of the display area 100 . The orthographic projections of some of the discharge units 40 on the base substrate BS are part of a ring, and the orthographic projections of another portion of the discharge units 40 on the base substrate BS are also part of a ring.

[0250] FIG. 25 is a schematic plan view of yet another discharge unit provided by at least one embodiment of the present disclosure.

[0251] For example, as shown in FIG24 , the display panel includes a display area 100 and a peripheral area 200 , and a plurality of discharge cells 40 are sequentially arranged along the circumference of the display area 100 . The orthographic projections of some discharge cells 40 on the base substrate BS are in the form of a ring, and the orthographic projections of other discharge cells 40 on the base substrate BS are in the form of a line.

[0252] For example, as shown in Figures 24 and 25 , the plurality of signal lines 300 further include a fourth signal line 340. At least one of the first signal line 310 and the second signal line 320 intersects the fourth signal line 340, and the fourth signal line 340 is spaced apart from the transmission portion 400 in the discharge unit 40. For example, the fourth signal line 340 may be located on a different film layer than at least one of the first signal line 310 and the second signal line 320.

[0253] For example, as shown in Figures 24 and 25, the fourth signal line 340 is located between the discharge unit 40 and the display area 100, and the signal transmitted by at least one of the first signal line 310 and the second signal line 320 is different from the signal transmitted by the fourth signal line. For example, as shown in Figure 24, the first signal line 310 and the second signal line 320 can both be gate lines, and the fourth signal line 340 can be a GOA signal line. For example, as shown in Figure 25, the first signal line 310 and the second signal line 320 can both be data lines, and the fourth signal line 340 can be a signal test line, but the embodiments of the present disclosure are not limited thereto.

[0254] For example, in an embodiment of the present disclosure, the signal line in the display panel may also be one of a clock signal line, an enable signal line, a test line, and a switch control signal line. For example, the clock signal line is configured to transmit a clock signal, the enable signal line is configured to transmit a enable signal, the test signal line is configured to transmit a test signal, and the switch control signal line is configured to transmit a switch signal. The embodiment of the present disclosure does not limit the type of signal line.

[0255] Figure 26 is a schematic diagram of a 3T1C pixel circuit in a display panel provided in an embodiment of the present disclosure. It should be noted that the pixel circuit of the display panel provided in the embodiment of the present disclosure is not limited to a 3T1C pixel circuit. This embodiment uses a 3T1C pixel circuit as an example to illustrate the structure of the display panel. As needed, the pixel circuit may further include a compensation circuit, a reset circuit, etc., which are not limited in the embodiment of the present disclosure.

[0256] 26 , the pixel circuit includes a first transistor T1, a second transistor T2, a third transistor T3, and a storage capacitor Cst. The first transistor T1 is a drive transistor, and the second transistor T2 is a data write transistor. A first electrode of the second transistor T2 is electrically connected to the first plate Ca of the storage capacitor Cst and the gate of the first transistor T1. A second electrode of the second transistor T2 is connected to a data line DT and configured to receive a data signal Vdt. The gate of the second transistor T2 is connected to a gate line G1, which is configured to provide a first control signal Vg1. The second transistor T2 is configured to write the data signal Vdt into the gate of the first transistor T1 and the storage capacitor Cst in response to the first control signal Vg1. The first electrode of the first transistor T1 is electrically connected to the second plate Cb of the storage capacitor Cst and is configured to be electrically connected to the first electrode E1 of the light-emitting element. The second electrode of the first transistor T1 is connected to a first power line PL1 and configured to receive a first power supply voltage (e.g., a high power supply voltage VDD). The first power line PL1 is configured to provide the first power supply voltage. The first transistor T1 is configured to control the current used to drive the light-emitting element under the control of the voltage of the gate of the first transistor T1. The first electrode of the third transistor T3 is electrically connected to the first electrode of the first transistor T1 and the second electrode plate Cb of the storage capacitor Cst. The second electrode of the third transistor T3 is configured to be connected to the sensing line SS to connect to the external detection circuit. The gate of the third transistor T3 is connected to the gate line G2, and the gate line G2 is configured to provide a second control signal Vg2. The third transistor T3 is configured to detect the electrical characteristics of the sub-pixel to which it belongs in response to the second control signal Vg2 to achieve external compensation. The electrical characteristics include, for example, the threshold voltage and / or carrier mobility of the first transistor T1, or the threshold voltage, drive current, etc. of the light-emitting element. The external detection circuit is, for example, a conventional circuit including a digital-to-analog converter (DAC) and an analog-to-digital converter (ADC), and the embodiments of the present disclosure are not described in detail. Figure 26 shows the gate g, first electrode a, and second electrode b of the transistor.

[0257] As shown in FIG26 , the first electrode of the second transistor T2 , the first plate Ca of the storage capacitor Cst, and the gate of the first transistor T1 are all connected to the node G.

[0258] As shown in FIG26 , the second electrode plate Cb, the third electrode plate Cc, the first electrode of the first transistor T1 , the first electrode of the third transistor T3 , and the first electrode E1 of the light emitting element are all connected to the node S.

[0259] 26 , the second electrode E2 of the light emitting element EM is connected to the second power line PL2 to receive a second power voltage (eg, a low power voltage VSS). The second power line PL2 is configured to provide the second power voltage.

[0260] For example, the storage capacitor Cst shown in FIG26 further includes a third plate Cc. The third plate Cc is located on a side of the first plate Ca away from the second plate Cb and is electrically connected to the second plate Cb to form a parallel capacitor structure, thereby increasing the capacitance of the storage capacitor Cst. For example, in a direction perpendicular to the substrate BS, the third plate Cc, the second plate Cb, and the first plate Ca all overlap.

[0261] The transistors used in the embodiments of the present disclosure may all be thin film transistors or field effect transistors or other switching devices with the same characteristics. The embodiments of the present disclosure are all described by taking thin film transistors as an example. The source and drain of the transistors used here may be symmetrical in structure, so their source and drain may be structurally indistinguishable. In the embodiments of the present disclosure, in order to distinguish the two poles of the transistor other than the gate, one of the poles is directly described as the first pole and the other pole as the second pole. In addition, transistors can be divided into N-type and P-type transistors according to the characteristics of the transistor. When the transistor is a P-type transistor, the turn-on voltage is a low-level voltage (for example, 0V, -5V, -10V or other suitable voltages), and the turn-off voltage is a high-level voltage (for example, 5V, 10V or other suitable voltages); when the transistor is an N-type transistor, the turn-on voltage is a high-level voltage (for example, 5V, 10V or other suitable voltages), and the turn-off voltage is a low-level voltage (for example, 0V, -5V, -10V or other suitable voltages). It should be noted that in the following description, the transistor in FIG. 7A is an N-type transistor. However, this is not intended to limit the present disclosure.

[0262] 27 to 30 are plan views of a stack of multiple film layers in a display panel provided by an embodiment of the present disclosure; and FIG. 31 to 32 are cross-sectional views of a display panel provided by an embodiment of the present disclosure.

[0263] Figure 27 is a plan view of an active pattern LY0 in a display panel provided in an embodiment of the present disclosure; Figure 28 is a plan view of a stack of an active pattern LY0 and a first conductive pattern LY1 in a display panel provided in an embodiment of the present disclosure; Figure 29 is a schematic diagram of a stack of an active pattern LY0 and a first conductive pattern LY1 in a display panel provided in an embodiment of the present disclosure; Figure 30 is a plan view of a stack of an active pattern LY0, a first conductive pattern LY1 and a second conductive pattern LY2 in a display panel provided in an embodiment of the present disclosure; Figure 31 is a schematic cross-sectional view of the display panel in Figure 30 taken along line C-C'; and Figure 32 is another schematic cross-sectional view of the display panel in Figure 30.

[0264] For example, as shown in FIG27 , the active pattern LY0 includes a first power line PL1, a data line DT, a sensing line SS, a first electrode Ca, and a plurality of first connection structures K1. For example, as shown in FIG28 , the first conductive pattern LY1 is located on a side of the active pattern LY0 away from the base substrate BS, with a first insulating layer 510 (as shown in FIG31 ) interposed between the active pattern LY0 and the first conductive pattern LY1. The first conductive pattern LY1 includes a second substrate Cb and a plurality of second connection structures K2. The first electrode Ca overlaps the second substrate Cb to form a storage capacitor Cst.

[0265] For example, Figure 29 schematically shows the positions of the vias of the stacked structure of the active pattern LY0 and the first conductive pattern LY1, for example, via N01, via N02, via N03, via N04, via N05, via N06, via N07, via N08, via N09, via N10 and via N11.

[0266] For example, as shown in Figures 30 and 31 , the second conductive pattern LY2 is located on a side of the first conductive pattern LY1 that is away from the base substrate BS, with a fourth insulating layer 540 interposed between the first and second conductive patterns LY1 and LY2. For example, the second conductive pattern LY2 is further covered with a second insulating layer 520, a third insulating layer 530 is disposed on the second insulating layer 520, and a pixel defining pattern 550 is located on a side of the third insulating layer 530 that is away from the base substrate BS. For example, Figure 30 also illustrates the positions of the first, second, and third transistors T1, T2, and T3.

[0267] For example, as shown in Figures 26, 30 and 31, the first electrode of the first transistor T1 is connected to the second conductive pattern LY2 through the via N03, and then electrically connected to the second plate Cb of the storage capacitor Cst through the via N04, and is configured to be electrically connected to the first electrode E1 of the light-emitting element; the second electrode of the first transistor T1 is connected to the second conductive pattern LY2 through the via N02, and then connected to the first power line PL1 through the via N01, and is configured to receive a first power supply voltage (for example, a high power supply voltage VDD), and the first power line PL1 is configured to provide the first power supply voltage.

[0268] For example, as shown in Figures 26, 30, and 31, the first electrode of the third transistor T3 is connected to the second conductive pattern LY2 via a via N06, and is further electrically connected to the first electrode of the first transistor T1 and the second electrode plate Cb of the storage capacitor Cst via a via N05. The second electrode of the third transistor T3 is connected to the second conductive pattern LY2 via a via N07, and is further connected to the sensing line SS via a via N08 to connect to the external detection circuit. The gate of the third transistor T3 is connected to the gate line G1. For example, as shown in Figure 30, the third transistor T3 and the second transistor T2 share a gate line G1.

[0269] For example, as shown in Figures 26, 30 and 32, the first electrode of the second transistor T2 is electrically connected to the first electrode Ca of the storage capacitor Cst and the gate of the first transistor T1 through the via N11, and the second electrode of the second transistor T2 is connected to the second conductive pattern LY2 through the via N09, and then connected to the data line DT through the via N10 to receive the data signal Vdt.

[0270] For example, as shown in FIG32 , the display panel further includes a color filter CF, an anode layer 570, and a light-emitting functional layer 580. The color filter CF is located on a side of the second insulating layer 520 away from the base substrate BS and in contact with the second insulating layer 520. The anode layer 570 is located on a side of the third insulating layer 530 away from the base substrate BS and in contact with the third insulating layer 530. The anode layer 570 is connected to the second conductive pattern LY2 through a via N30. The light-emitting functional layer 580 is located between the electrode layer 560 and the anode layer 570.

[0271] The working principle of the pixel circuit shown in Figure 26 is explained below in combination with the signal timing diagrams shown in Figures 33 to 35, where Figure 33 shows the signal timing diagram of the pixel circuit during the display process, and Figures 34 and 35 show the signal timing diagrams of the pixel circuit during the detection process.

[0272] For example, as shown in FIG33 , the display process of each frame of an image includes a data writing and reset phase 1 and a light-emitting phase 2. FIG33 shows the timing waveforms of each signal in each phase. An operating process of the 3T1C pixel circuit includes: in the data writing and reset phase 1, the first control signal Vg1 and the second control signal Vg2 are both on signals, the second transistor T2 and the third transistor T3 are turned on, the data signal Vdt is transmitted to the gate of the first transistor T1 via the second transistor T2, the analog-to-digital converter writes a reset signal to the first electrode E1 of the light-emitting element (e.g., the anode of the OLED) through the sensing line SS and the third transistor T3, the first transistor T1 is turned on and generates a driving current to charge the first electrode E1 of the light-emitting element EM to the operating voltage; in the light-emitting phase 2, the first control signal Vg1 and the second control signal Vg2 are both off signals, due to the bootstrap effect of the storage capacitor Cst, the voltage across the storage capacitor Cst remains unchanged, the first transistor T1 operates in a saturated state with a constant current, and drives the light-emitting element to emit light.

[0273] For example, Figure 34 shows a signal timing diagram of the pixel circuit when detecting the threshold voltage. One operating process of the 3T1C pixel circuit includes: the first control signal Vg1 and the second control signal Vg2 are both turn-on signals, the second transistor T2 and the third transistor T3 are turned on, and the data signal Vdt is transmitted to the gate of the first transistor T1 via the second transistor T2; the analog-to-digital converter writes a reset signal to the first electrode E1 (node ​​S) of the light-emitting element EM through the sensing line SS and the third transistor T3, the first transistor T1 is turned on and charges the node S until the first transistor T1 is turned off, and the digital-to-analog converter samples the voltage on the sensing line SS to obtain the threshold voltage of the first transistor T1. This process can be performed, for example, when the display device is turned off. Vs in Figure 34 represents the voltage at node S in Figure 26.

[0274] For example, FIG35 shows a signal timing diagram of the pixel circuit when performing carrier mobility detection. An operating process of the 3T1C pixel circuit includes: in a first phase, the first control signal Vg1 and the second control signal Vg2 are both on signals, the second transistor T2 and the third transistor T3 are turned on, and the data signal Vdt is transmitted to the gate of the first transistor T1 via the second transistor T2; the analog-to-digital converter writes a reset signal to the first electrode E1 (node ​​S) of the light-emitting element EM through the sensing line SS and the third transistor T3; in a second phase, the first control signal Vg1 is an off signal and the second control signal Vg2 is an on signal, the second transistor T2 is turned off, and the third transistor T3 is turned on, floating the sensing line SS; due to the bootstrap effect of the storage capacitor Cst, the voltage across the storage capacitor Cst remains unchanged, the first transistor T1 operates in a saturated state with a constant current, and drives the light-emitting element to emit light; then the digital-to-analog converter samples the voltage on the sensing line SS and, based on the magnitude and duration of the emission current, calculates the carrier mobility in the first transistor T1. For example, this process can be performed during the blanking phase between display phases.

[0275] Through the above detection, the electrical characteristics of the first transistor T1 can be obtained and a corresponding compensation algorithm can be implemented.

[0276] For example, the display panel may further include a data driver circuit and a scan driver circuit (not shown). The data driver circuit is configured to emit a data signal, such as the aforementioned data signal Vdt, as needed (e.g., an image signal input to the display device); the pixel circuit of each sub-pixel is further configured to receive the data signal and apply the data signal to the gate of the first transistor. The scan driver circuit is configured to output various scan signals, such as the aforementioned first control signal Vg1 and second control signal Vg2, and is, for example, an integrated circuit chip (IC) or a gate driver circuit (GOA) directly fabricated on the display panel.

[0277] For example, the display panel further includes a control circuit. For example, the control circuit is configured to control the data drive circuit to apply a data signal and the gate drive circuit to apply a scan signal. An example of the control circuit is a timing control circuit (T-con). The control circuit can be in various forms, for example, including a processor and a memory, the memory including executable code, and the processor running the executable code to perform the above-mentioned detection method.

[0278] For example, the processor may be a central processing unit (CPU) or other forms of processing devices with data processing capabilities and / or instruction execution capabilities, such as a microprocessor, a programmable logic controller (PLC), etc.

[0279] For example, the memory may include one or more computer program products, and the computer program product may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. Volatile memory may include, for example, random access memory (RAM) and / or cache memory (cache), etc. Non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor may execute the desired functions of the program instructions. Various applications and various data may also be stored in the computer-readable storage medium, such as the electrical characteristic parameters obtained in the above-mentioned detection method, etc.

[0280] Embodiments of the present disclosure further provide a display device comprising any of the above-described display panels. For example, the display panel may be a foldable display panel, and the display device may be a foldable display device. Of course, the display panel may also be a non-foldable display panel, and the display device may also be a non-foldable display device.

[0281] For example, the display device includes an OLED or a product including an OLED. For example, the display device includes any product or component with a display function, such as a television, a digital camera, a mobile phone, a watch, a tablet computer, a laptop computer, a navigation system, etc., which includes the above-mentioned display panel.

[0282] It should be noted that, for the sake of clarity, the thickness of layers or regions in the drawings used to describe the embodiments of the present disclosure are exaggerated. It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "under" another element, the element may be "directly" "on" or "under" the other element, or intervening elements may be present.

[0283] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A display panel, comprising: A display area is configured to display an image, including a plurality of sub-pixels; as well as a peripheral area, located on at least one side of the display area; The display panel comprises a base substrate, and a plurality of signal lines located on the base substrate, at least part of the signal lines are located in the peripheral area, and the signal lines are connected to at least one sub-pixel among the plurality of sub-pixels; The display panel further includes a discharge unit, the discharge unit includes a transmission part, the transmission part includes a semiconductor material, The plurality of signal lines include a first signal line and a second signal line, a gap is provided between the first signal line and the second signal line, and the transmission portion is located in the gap, The discharge unit further includes a first discharge end and a second discharge end, wherein at least a portion of the first discharge end is located between the transmission portion and the first signal line, and the first discharge end is connected to the first signal line, and at least a portion of the second discharge end is located between the transmission portion and the second signal line, and the second discharge end is connected to the second signal line. The transmission section is configured to connect the first signal line and the second signal line when the first signal line, the second signal line, or at least one of the transmission section receives static electricity, so that the static electricity is transmitted to the first signal line and the second signal line. 2 . The display panel according to claim 1 , wherein the signal line extends from the display area to the peripheral area.

3. The display panel according to claim 1, wherein the first discharge end and the first signal line are an integrated structure, the second discharge end and the second signal line are an integrated structure, the first discharge end protrudes relative to an extension direction of the first signal line, and the second discharge end protrudes relative to an extension direction of the second signal line.

4. The display panel according to any one of claims 1 to 3, wherein an orthographic projection area of ​​the transmission portion on the base substrate is larger than an orthographic projection area of ​​the first discharge end on the base substrate, and an orthographic projection area of ​​the transmission portion on the base substrate is larger than an orthographic projection area of ​​the second discharge end on the base substrate. 5 . The display panel according to claim 1 , wherein in an extending direction of the transmission portion, a size of the transmission portion is larger than a size of at least one of the first discharge end and the second discharge end. 6 . The display panel according to claim 1 , wherein the first discharge end is in contact with the transmission part, and the second discharge end is in contact with the transmission part.

7. The display panel according to any one of claims 1 to 6, wherein at least one of an orthographic projection of the first discharge end on the base substrate and an orthographic projection of the second discharge end on the base substrate is circular, elliptical, rectangular or triangular. 8 . The display panel according to claim 1 , wherein an orthographic projection of the first discharge end on the base substrate has the same shape as an orthographic projection of the second discharge end on the base substrate.

9. The display panel according to any one of claims 1 to 8, wherein the orthographic projection of the end of the first discharge end away from the first signal line on the base substrate is a first semicircle, and the orthographic projection of the end of the second discharge end away from the second signal line on the base substrate is a second semicircle. 10 . The display panel according to claim 9 , wherein the radius of the first semicircle is 1 to 1.5 micrometers, and the radius of the second semicircle is 1 to 1.5 micrometers.

11. The display panel according to any one of claims 1 to 10, wherein the orthographic projection of the first discharge end on the base substrate and the orthographic projection of the transmission portion on the base substrate have a first overlapping area, and the orthographic projection of the second discharge end on the base substrate and the orthographic projection of the transmission portion on the base substrate overlap in a second overlapping area, in, The area of ​​the first overlapping region is smaller than the area of ​​the orthographic projection of the first discharge end on the base substrate, and the area of ​​the second overlapping region is smaller than the area of ​​the orthographic projection of the second discharge end on the base substrate. 12 . The display panel according to claim 11 , wherein along the extension direction of the transmission portion, a maximum size of the first overlapping area is less than 2 microns, and a maximum size of the second overlapping area is less than 2 microns.

13. The display panel according to any one of claims 1 to 12, wherein an orthographic projection of the first discharge end on the base substrate at least partially overlaps with an orthographic projection of the transmission portion on the base substrate, and an orthographic projection of the second discharge end on the base substrate at least partially overlaps with an orthographic projection of the transmission portion on the base substrate.

14. The display panel according to any one of claims 1-5 and 7-12, wherein the orthographic projection of the first discharge end on the base substrate does not overlap with the orthographic projection of the transmission part on the base substrate, and the orthographic projection of the second discharge end on the base substrate does not overlap with the orthographic projection of the transmission part on the base substrate. 15 . The display panel according to claim 14 , wherein in an extending direction of the transmission portion, a minimum distance between the transmission portion and the first discharge end and a minimum distance between the transmission portion and the second discharge end are both less than 2 micrometers. 16 . The display panel according to claim 1 , wherein in a direction perpendicular to the base substrate, a thickness of the first signal line and a thickness of the second signal line are both greater than a thickness of the transmission portion.

17. The display panel according to claim 16, wherein in a direction perpendicular to the base substrate, a thickness of the first signal line is 9-12 times a thickness of the transmission portion; and / or a thickness of the second signal line is 9-12 times a thickness of the transmission portion.

18. The display panel according to any one of claims 1 to 17, wherein at least one of the first signal line and the second signal line is located on the same layer as the transmission part; or, the first signal line and the second signal line are both located on different layers from the transmission part.

19. The display panel according to claim 1-18, wherein the discharge unit further comprises a third discharge terminal, the plurality of signal lines further comprises a third signal line, the third discharge terminal is connected to the third signal line, in, The transmission section is further configured to transmit the static electricity to the third signal line. 20 . The display panel according to claim 19 , wherein the first discharge end, the second discharge end and the third discharge end are located on the same layer. 21 . The display panel according to claim 19 , wherein at least one of the first discharge terminal and the second discharge terminal and the third discharge terminal are located in a same conductive pattern layer. 22 . The display panel according to claim 19 , wherein the third discharge end is in contact with the transmission portion.

23. The display panel according to any one of claims 19 to 21, wherein the third discharge end is spaced apart from the transmission portion. 24 . The display panel according to claim 19 , wherein an extension direction of the third discharge end intersects with an extension direction of the transmission portion. 25 . The display panel according to claim 19 , wherein the first signal line and the second signal line both intersect with the third signal line.

26. The display panel according to any one of claims 19 to 25, wherein the transmission portion comprises a main body portion and a protruding portion, the protruding portion is connected to the main body portion and protrudes from the main body portion, and at least a portion of the third discharge end is located between the protruding portion and the third signal line.

27. According to the display panel of claim 26, the transmission portion has a "T" shape as an orthographic projection on the base substrate.

28. The display panel according to any one of claims 19 to 27, wherein the third signal line is configured to transmit a signal different from that of the first signal line, and / or the third signal line is configured to transmit a signal different from that of the second signal line.

29. The display panel according to any one of claims 1 to 28, further comprising: A first insulating layer, located on the substrate; A second insulating layer, located on a side of the first insulating layer away from the substrate; a pixel defining pattern, located on a side of the second insulating layer away from the first insulating layer, the pixel defining pattern being configured to define a light emitting area of ​​the sub-pixel; an electrode layer, located on a side of the pixel defining pattern away from the substrate, Wherein, the transmission portion is located between the first insulating layer and the pixel defining pattern. 30 . The display panel according to claim 29 , wherein the transmission portion, the first signal line, and the second signal line are all located on a side of the first insulating layer away from the base substrate, and are in contact with the first insulating layer. 31 . The display panel according to claim 29 or 30 , wherein the transmission portion is in contact with the second insulating layer.

32. The display panel according to any one of claims 29 to 31, wherein the first insulating layer comprises a first buffer layer and a second buffer layer which are stacked, and the first buffer layer is closer to the base substrate than the second buffer layer. The transmission portion, the first signal line, and the second signal line are all located on a side of the second buffer layer away from the base substrate, and are in contact with the second buffer layer.

33. The display panel according to claim 26, wherein the second buffer layer comprises a first buffer portion and a second buffer portion, the transmission portion is located on a side of the first buffer portion away from the base substrate, and the transmission portion is in contact with the first buffer portion, and an orthographic projection of the second buffer portion on the base substrate does not overlap with an orthographic projection of the transmission portion on the base substrate, In a direction perpendicular to the base substrate, the first buffer portion includes a first surface close to the electrode layer, the second buffer portion includes a second surface close to the electrode layer, and the first surface is farther away from the base substrate than the second surface.

34. According to the display panel according to any one of claims 29 to 33, the second insulating layer is located on a side of the transmission part away from the base substrate, and the orthographic projection of the transmission part on the base substrate, the orthographic projection of the first discharge end on the base substrate and the orthographic projection of the second discharge end on the base substrate all at least partially overlap with the orthographic projection of the second insulating layer on the base substrate.

35. According to the display panel according to any one of claims 29-34, the orthographic projection of the first signal line on the base substrate at least partially overlaps with the orthographic projection of the second insulating layer on the base substrate, and the orthographic projection of the second signal line on the base substrate at least partially overlaps with the orthographic projection of the second insulating layer on the base substrate.

36. According to the display panel according to any one of claims 29-34, at least a part of the orthographic projection of the first signal line on the base substrate is located outside the orthographic projection of the second insulating layer on the base substrate, and at least a part of the orthographic projection of the second signal line on the base substrate is located outside the orthographic projection of the second insulating layer on the base substrate.

37. The display panel according to any one of claims 29 to 36, wherein the second insulating layer is in contact with the pixel defining pattern.

38. The display panel according to any one of claims 29 to 36, further comprising a third insulating layer, wherein: The second insulating layer, the third insulating layer and the pixel defining pattern are stacked, the third insulating layer is located between the second insulating layer and the pixel defining pattern, and the orthographic projection of the discharge unit on the base substrate at least partially overlaps with the orthographic projection of the third insulating layer on the base substrate.

39. The display panel according to any one of claims 29 to 38, wherein the pixel defining pattern comprises a first pixel defining portion and a second pixel defining portion, the first pixel defining portion is located on a side of the transmission portion away from the base substrate, and an orthographic projection of the first pixel defining portion on the base substrate overlaps with an orthographic projection of the transmission portion on the base substrate, and an orthographic projection of the second pixel defining portion on the base substrate does not overlap with an orthographic projection of the transmission portion on the base substrate, in, In a direction perpendicular to the base substrate, the thickness of the first pixel defining portion is less than The thickness of the second pixel defining portion.

40. According to the display panel according to claim 39, the electrode layer includes an electrode portion, the electrode portion is located on a side of the first pixel defining portion away from the base substrate, and the orthographic projection of the electrode portion on the base substrate overlaps with the orthographic projection of the transmission portion on the base substrate, and the electrode layer has a recess at the first pixel defining portion.

41. The display panel according to claim 29, further comprising a fourth insulating layer, wherein: The first insulating layer, the fourth insulating layer and the second insulating layer are stacked in a direction perpendicular to the base substrate, and the fourth insulating layer is located between the first insulating layer and the second insulating layer. The transmission portion is located on a side of the first insulating layer away from the base substrate and contacts the first insulating layer, and the first signal line and the second signal line are both located on a side of the fourth insulating layer away from the base substrate and contact the fourth insulating layer. 42 . The display panel according to claim 41 , wherein the transmission portion is located between the first insulating layer and the fourth insulating layer, and the transmission portion is covered by the fourth insulating layer. 43 . The display panel according to claim 41 , wherein the transmission portion is located between the first insulating layer and the second insulating layer, and an orthographic projection of the transmission portion on the base substrate has no overlap with an orthographic projection of the fourth insulating layer on the base substrate.

44. The display panel according to claim 29, further comprising a groove, wherein: At least a portion of the transmission portion is located in the groove, and the pixel defining pattern fills the groove and covers the transmission portion.

45. According to the display panel of claim 44, in a direction parallel to the base substrate and perpendicular to the extension direction of the transmission part, the width of the transmission part is smaller than the width of the groove, and there is a first gap between the transmission part and the inner wall of the groove.

46. ​​The display panel according to claim 44 or 45, wherein the first insulating layer comprises a first buffer layer and a second buffer layer which are stacked, and the first buffer layer is closer to the base substrate than the second buffer layer. The transmission portion, the first signal line and the second signal line are all located on a side of the second buffer layer away from the base substrate, and are in contact with the second buffer layer. The second buffer layer includes a first portion located in the groove, a second gap is formed between at least a portion of the first portion and an inner wall of the groove, the transmission portion is located on a side of the first portion away from the substrate, and the transmission portion is in contact with the first portion, and the pixel definition The pattern covers the first portion.

47. The display panel according to claim 46, wherein the second insulating layer comprises a second portion located in the groove, and a third gap is formed between at least a portion of the second portion and an inner wall of the groove, The first portion, the transmission portion, and the second portion are stacked along a direction perpendicular to the base substrate to form a boss, and the pixel defining pattern covers the boss.

48. The display panel according to claim 47, wherein an orthographic projection of the second portion on the base substrate falls within an orthographic projection of the transmission portion on the base substrate, and falls within an orthographic projection of the first portion on the base substrate.

49. The display panel according to any one of claims 44 to 48, wherein the pixel defining pattern comprises a first pixel defining portion and a second pixel defining portion, the first pixel defining portion is located on a side of the transmission portion away from the base substrate, and an orthographic projection of the first pixel defining portion on the base substrate overlaps with an orthographic projection of the transmission portion on the base substrate, and an orthographic projection of the second pixel defining portion on the base substrate does not overlap with an orthographic projection of the transmission portion on the base substrate, The second pixel defining portion includes a sub-defining portion located in the groove, and in a direction perpendicular to the base substrate, a thickness of the first pixel defining portion is smaller than a thickness of the sub-defining portion. 50 . The display panel according to claim 49 , wherein in a direction perpendicular to the base substrate, a thickness of the first pixel defining portion is 1 / 8 to 1 / 10 of a thickness of the sub-defining portion.

51. The display panel according to any one of claims 44 to 50, further comprising a third insulating layer, wherein: The second insulating layer, the third insulating layer and the pixel defining pattern are stacked, the third insulating layer is located between the second insulating layer and the pixel defining pattern, and the third insulating layer is located on the outer side of the groove away from the transmission portion.

52. The display panel according to any one of claims 44 to 51, wherein the second buffer layer comprises a first side wall facing the transmission portion, the first side wall has a first slope angle with a plane, and the plane is parallel to the base substrate. The second insulating layer includes a second side wall facing the transmission portion, the second side wall has a second slope angle with the plane, and the first slope angle is smaller than the second slope angle.

53. The display panel according to claim 52, further comprising a third insulating layer, wherein: The second insulating layer, the third insulating layer and the pixel defining pattern are stacked, the third insulating layer is located between the second insulating layer and the pixel defining pattern, and the third insulating layer is located on the outer side of the groove away from the transmission portion. The third insulating layer includes a third side wall facing the transmission portion, the third side wall has a third slope angle with the plane, and the second slope angle is greater than the third slope angle.

54. The display panel according to claim 53, wherein the first slope angle is less than 30 degrees, the second slope angle is 30-70 degrees, and the third slope angle is less than 30 degrees.

55. The display panel according to any one of claims 44 to 54, wherein at least a portion of the first discharge end is located in the groove, and at least a portion of the second discharge end is located in the groove.

56. The display panel according to claim 55, wherein the discharge unit further comprises a third discharge terminal, the plurality of signal lines further comprises a third signal line, the third discharge terminal is connected to the third signal line, and the transmission unit is further configured to transmit the static electricity to the third signal line. in, At least a portion of the third discharge terminal is located in the groove.

57. The display panel according to any one of claims 1 to 56, wherein at least two discharge units are arranged in the interval between the first signal line and the second signal line, and the at least two discharge units are located on the same side of the display area.

58. According to the display panel according to any one of claims 1 to 57, an extension direction of the first signal line is the same as an extension direction of the second signal line.

59. According to any one of claims 1 to 58, an extension direction of the first signal line intersects with an extension direction of the second signal line.

60. The display panel according to any one of claims 1 to 28, wherein: The display panel includes a plurality of discharge cells, and the plurality of discharge cells are sequentially arranged along a circumference of the display area.

61. The display panel according to any one of claims 1-28 comprises a plurality of gate lines and a plurality of data lines, and in the peripheral area, the discharge units are arranged between adjacent gate lines, the discharge units are arranged between adjacent data lines, and discharge units are arranged between adjacent gate lines and data lines, and the adjacent discharge units are connected to form a ring.

62. The display panel according to claim 60, wherein the plurality of discharge units are connected in sequence, and the orthographic projections of the plurality of discharge units on the base substrate are in the shape of a ring, a part of a ring, or a line.

63. The display panel according to any one of claims 1 to 28, wherein the plurality of signal lines further include a fourth signal line, at least one of the first signal line and the second signal line intersects the fourth signal line, and the fourth signal line is spaced apart from the transmission portion in the discharge unit.

64. The display panel according to claim 63, wherein the fourth signal line is located between the discharge unit and the display area, and a signal transmitted by at least one of the first signal line and the second signal line is different from a signal transmitted by the fourth signal line.

65. The display panel according to any one of claims 1 to 64, wherein: The signal line is one of a gate line, a data line, a clock signal line, a start signal line, a test line and a switch control signal line, The gate line is configured to transmit a gate signal, the data line is configured to transmit a data signal, the clock signal line is configured to transmit a clock signal, the start signal line is configured to transmit a start signal, the test signal line is configured to transmit a test signal, and the switch control signal line is configured to transmit a switch signal.

66. The display panel according to any one of claims 1 to 65, wherein: The length of the transmission part in its extension direction is 150-180 microns; and / or the width of the transmission part perpendicular to its extension direction is 15-25 microns; and / or the thickness of the transmission part perpendicular to the substrate is 0.035-0.050 microns.

67. A display device comprising a display panel as described in any one of claims 1-66.

Images