Display panel and display device

Abstract

The invention relates to a display panel and a display device, and belongs to the technical field of display. The display panel comprises a substrate, a supporting pattern, a box dam, a first electroluminescent layer located in a peripheral area and other structures, the supporting pattern comprises a plurality of first supporting structures located in the peripheral area, and the first supporting structures are located between the orthographic projection of the box dam on the substrate and the orthographic projection of the first electroluminescent layer on the substrate. The area between the box dam and the first electroluminescent layer is the area close to the half-etching boundary of the mask in the manufacturing process of the display panel, the first supporting structure located in the area can support the mask, the possibility that foreign matter particles are generated due to deformation of the half-etching boundary of the mask is reduced, and the yield of the display panel is improved. The effect of improving the yield of the display panel is achieved.

Description

Technical Field

[0001] The present disclosure relates to the field of display technologies, and more particularly, to a display panel and a display device. Background Art

[0002] A display panel is a device capable of realizing a display function.

[0003] In related technologies, a display panel has foreign particles (Particle, PT). These foreign particles may be generated during the manufacturing process of the display panel, and may cause the encapsulation of the display panel to fail, thereby resulting in a poor yield of the display panel.

[0004] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present disclosure, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0005] The present disclosure provides a display panel and a display device.

[0006] According to one aspect of the present disclosure, a display panel is provided, including:

[0007] A substrate, including a display area and a peripheral area located outside the display area. The peripheral area includes a bottom peripheral area and two side peripheral areas. The bottom peripheral area is adjacent to the two side peripheral areas respectively, and the two side peripheral areas are located on opposite sides of the display area;

[0008] A support pattern, located on the substrate. The support pattern includes a plurality of first support structures located in the side peripheral areas;

[0009] A first electroluminescent layer and a plurality of light-emitting units located on a side of the support pattern away from the substrate. The orthographic projection of the plurality of light-emitting units on the substrate is located in the display area, and the orthographic projection of the first electroluminescent layer on the substrate is located in the side peripheral area. The light-emitting units include a plurality of second electroluminescent layers, and the first electroluminescent layer and one of the second electroluminescent layers are of the same layer structure;

[0010] A light extraction layer, covering the plurality of light-emitting units;

[0011] A dam, located in the peripheral area and arranged around the display area. The first support structure is located between the orthographic projection of the dam on the substrate and the orthographic projection of the first electroluminescent layer on the substrate;

[0012] A control circuit, located in the bottom peripheral area.

[0013] In an exemplary embodiment, the first support structure is located between the orthographic projection of the edge of the light extraction layer in the side peripheral region and the orthographic projection of the first electroluminescent layer on the substrate.

[0014] In an exemplary embodiment, the display panel further includes:

[0015] An encapsulation layer, which is located on the side of the plurality of light-emitting units away from the substrate and covers the dam;

[0016] A touch control circuit, which is located on the side of the encapsulation layer away from the substrate. The touch control circuit includes a first touch control circuit and a second touch control circuit. The orthographic projection of the first touch control circuit on the substrate is located in the active display area, and the orthographic projection of the second touch control circuit on the substrate is located in the side peripheral region;

[0017] There is an overlap between the orthographic projection of the first support structure and the orthographic projection of the second touch control circuit on the substrate.

[0018] In an exemplary embodiment, the display area includes a central area and an edge area. The edge area is located on the side of the central area close to the side area. The orthographic projection of the plurality of light-emitting units on the substrate is located in the central area and the edge area;

[0019] The support pattern further includes a plurality of second support structures, and all of the plurality of second support structures are located in the central area.

[0020] In an exemplary embodiment, the display panel further includes:

[0021] A connection layer, which covers the light extraction layer. The first orthographic projection of the edge of the connection layer on the substrate and the second orthographic projection of the edge of the light extraction layer on the substrate are both located in the peripheral area. The first orthographic projection is located on the side of the second orthographic projection close to the active display area;

[0022] The first support structure is located between the first orthographic projection and the second orthographic projection.

[0023] In an exemplary embodiment, the support pattern further includes a plurality of columns of second support structures arranged in a first direction. Each column of second support structures includes a plurality of second support structures arranged in a second direction. The angle between the first direction and the second direction is greater than 0 degree and less than 180 degrees;

[0024] The multiple first support structures are arranged as at least one first support structure column in the first direction in the side peripheral region. Each first support structure column includes multiple first support structures arranged in the second direction, and in a unit length in the second direction, the number of first support structures in one first support structure column is greater than the number of second support structures in one second support structure column.

[0025] In an exemplary embodiment, one first support structure column includes multiple first support structure groups. Each first support structure group includes at least one first support structure, and any two adjacent first support structure groups among the multiple first support structure groups are arranged in a staggered manner in the second direction.

[0026] In an exemplary embodiment, the first support structure group includes at least two first support structures, and the at least two first support structures are arranged in alignment in the second direction.

[0027] In an exemplary embodiment, the display panel further includes:

[0028] A connection layer located on a side of the light extraction layer away from the substrate;

[0029] The first support structure is located between a positive projection of an edge of the connection layer in the side peripheral region and a positive projection of the first electroluminescent layer on the substrate.

[0030] In an exemplary embodiment, the support pattern further includes multiple second support structure columns arranged in the first direction. Each second support structure column includes multiple second support structures arranged in the second direction, and an angle between the first direction and the second direction is greater than 0 degrees and less than 180 degrees;

[0031] The multiple first support structures are arranged as at least one first support structure column in the first direction in the peripheral region. Each first support structure column includes multiple first support structure groups arranged in the second direction. Each first support structure group includes at least one first support structure, and at least one target support structure group is included among the multiple first support structure groups. The target support structure group has aligned second support structures in the first direction.

[0032] In an exemplary embodiment, each first support structure group includes at least two first support structures.

[0033] In an exemplary embodiment, the display panel further includes:

[0034] The pixel definition layer is located on the substrate. The pixel definition layer includes a plurality of openings, and the plurality of first support structures are located in the plurality of openings.

[0035] In an exemplary embodiment, the pixel definition layer and the support pattern are of the same layer structure.

[0036] In an exemplary embodiment, the number of the first electroluminescent layers is plural. The plural first electroluminescent layers are stacked in the side peripheral region and are respectively of the same layer structure as the plural second electroluminescent layers.

[0037] According to another aspect of the present disclosure, there is provided a display device, which includes a housing and the display panel described in any one of the above.

[0038] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. Description of the Drawings

[0039] The drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0040] Figure 1 It is a schematic structural diagram during the manufacturing process of a display panel in the related art.

[0041] Figure 2 It is a schematic structural diagram during the manufacturing process of another display panel in the related art.

[0042] Figure 3 It is a schematic structural diagram of a display panel provided by an embodiment of the present disclosure.

[0043] Figure 4 It is Figure 3 An enlarged structural diagram of a partial area in the shown display panel.

[0044] Figure 5 It is Figure 4 A schematic cross-sectional structural diagram of the shown display panel.

[0045] Figure 6 It is a schematic diagram during the manufacturing process of a display panel provided by an embodiment of the present disclosure.

[0046] Figure 7 It is Figure 3 Another enlarged structural diagram of a partial area in the shown display panel.

[0047] Figure 8 is Figure 7 a schematic cross-sectional structure diagram of a display panel shown in the figure.

[0048] Figure 9 is Figure 3 an enlarged structure diagram of another partial area in the display panel shown in the figure.

[0049] Figure 10 is Figure 9 a schematic cross-sectional structure diagram of a display panel shown in the figure.

[0050] Figure 11 a schematic diagram showing the encapsulation failure of a display panel in the related art.

[0051] Figure 12 a schematic structure diagram of a display panel provided by an embodiment of the present disclosure.

[0052] Figure 13 is Figure 3 an enlarged structure diagram of another partial area in the display panel shown in the figure.

[0053] Figure 14 a schematic diagram showing the correlation between the thickness of the support structure and the inkjet printing layer in the encapsulation layer in the display area of a display panel.

[0054] Figure 15 is Figure 3 an enlarged structure diagram of another partial area in the display panel shown in the figure.

[0055] Figure 16 is Figure 15 a schematic cross-sectional structure diagram of a display panel shown in the figure.

[0056] Figure 17 is Figure 15 a schematic structure diagram during the manufacturing process of the display panel shown in the figure.

[0057] Figure 18 is Figure 17 a schematic simulation diagram of the contact stress of the display panel shown in the figure.

[0058] Figure 19 is Figure 17 a schematic simulation diagram of the mask deformation of the display panel shown in the figure.

[0059] Figure 20 a schematic simulation diagram of the contact stress in a display panel in the related art.

[0060] Figure 21 a schematic simulation diagram of the mask deformation in a display panel in the related art.

[0061] Figure 22 is Figure 3 A schematic enlarged view of another partial area in the display panel shown.

[0062] Figure 23 is Figure 22 A schematic cross-sectional view of a part of the display panel shown.

[0063] Figure 24 is Figure 22 A schematic view of the display panel shown during the manufacturing process.

[0064] Figure 25 is Figure 22 A schematic simulation view of the contact stress of the display panel shown.

[0065] Figure 26 is Figure 22 A schematic simulation view of the mask deformation of the display panel shown.

[0066] Figure 27 It is a schematic structural view of a display panel provided by an embodiment of the present disclosure during manufacturing.

[0067] Figure 28 is Figure 27 A schematic enlarged view of a partial area in Detailed implementation manners

[0068] Now, example embodiments will be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. Like reference numerals in the figures denote the same or similar structures, and thus their detailed descriptions will be omitted. In addition, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0069] The terms "a", "an", "the", "said" and "at least one" are used to denote the existence of one or more elements / components / etc.; the terms "comprising" and "having" are used to mean an open inclusion and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc.; the terms "first", "second", "third", etc. are only used as labels and are not a limitation on the number of their objects.

[0070] The "overlap" of Feature A and Feature B in this document means that the orthographic projection of Feature A on a plane and the orthographic projection of Feature B on this plane at least partially coincide. The orthographic projection refers to the projection towards the plane along the direction perpendicular to this plane. This plane can be any surface perpendicular to the light-emitting direction in the touch display panel, such as the surface of the substrate, the driving backplane, etc.

[0071] In the drawings of the present disclosure, for the sake of clarity of illustration, the dimensions of layers and regions may be exaggerated. Moreover, it can be understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on other elements, or there may be intermediate layers. Additionally, it can be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under other elements, or there may be more than one intermediate layer or element. Additionally, it can also be understood that when a layer or element is referred to as being "between" two layers or two elements, it can be the only layer between the two layers or two elements, or there may be more than one intermediate layer or element. Similar reference numerals throughout indicate similar elements.

[0072] Figure 1 is a schematic structural diagram during the manufacturing process of a display panel in the related art ( Figure 1 also shows an enlarged structural diagram of a partial region q1), which illustrates the process of depositing an electroluminescent material layer. Among them, a substrate 11 with magnetism, a cooling plate 12, and a base 13 are stacked in sequence from top to bottom. The substrate 11 can adsorb a mask plate 14 through magnetism. The cooling plate 12 is used to achieve a cooling function. The base 13 is used to carry the display panel being manufactured. An electroluminescent (el) material layer 15 is formed in the opening of the mask plate 14. A support structure (Photo Spacer, PS) 16 is located between the base 13 and the mask plate 14 and is used to support the mask plate 14 to prevent the mask plate 14 from rubbing against the display panel.

[0073] The mask plate 14 includes a mask frame 141 and a Fine Metal Mask (FMM) 142. Among them, in order to improve the deposition effect, the edge of the mask frame 14 has a half-etch boundary s1, and the half-etch boundary s1 has a protruding end. The applicant found that this protruding end is prone to warping deformation under the influence of magnetism (such as Figure 1 the deformed shape shown by the dotted line in the figure), and then contacts and squeezes the FMM 142. The FMM 142 will also undergo local slight wrinkling under this extrusion and rub against the PS 16. There is some electroluminescent material deposited on the PS 16, and this part of the electroluminescent material may fall off under this rubbing, and the fallen electroluminescent material may form foreign particles.

[0074] In addition, please refer toFigure 2 , Figure 2 is a schematic structural diagram in the manufacturing process of another display panel in the related art. Below the substrate 13, an anode 17 and a PS 16 are sequentially arranged.

[0075] An open mask 18 is located below the PS 16. The edge of the open mask 18 also has a semi-etching boundary s1. The applicant found that the semi-etching boundary s1 will also deform as shown by the dotted line under the action of the upward magnetic force. Then, the tip of the semi-etching boundary s1 will approach the anode 17 and generate a capacitance with the anode 17. When the open mask 18 is separated from the substrate 16 subsequently, the end of the semi-etching boundary s1 may discharge, generating an electro-static discharge (ESD) phenomenon, and the ESD will damage the electroluminescent material ( Figure 2 not shown in the figure) to form foreign particles. At the same time, due to the action of the ESD, the foreign particles may stand up to form foreign particles with a large vertical (the vertical direction is perpendicular to the substrate) height (H-Z PT).

[0076] The applicant found that on the one hand, such H-Z PT will push up the subsequently formed encapsulation layer, resulting in a thinner encapsulation layer above the H-Z PT. This thinner position may be etched off in the subsequent process, resulting in encapsulation failure. On the other hand, if the formation position of the H-Z PT is too close to the edge of the display area, the encapsulation layer at the edge of the display area is thinner, and then it will be difficult for the encapsulation layer to cover the H-Z PT, resulting in encapsulation failure. Figure 1 The structure shown may also have the problem of encapsulation failure for this reason. Such problems of encapsulation failure may cause defects such as growing dark spots (GDS) in the display panel, thus seriously affecting the display effect of the display panel and resulting in a poor yield of the display panel.

[0077] The present disclosure provides a display panel and a display device, which can solve some problems existing in the above-mentioned related art.

[0078] Figure 3 is a schematic structural diagram of a display panel provided by an embodiment of the present disclosure. Figure 4 is Figure 3 an enlarged structural diagram of a partial area (area q2) in the display panel shown. Figure 5 is Figure 4 a schematic cross-sectional structural diagram (the cross-sectional position is at A-A) of the display panel shown. Please refer to Figure 3 , Figure 4 and Figure 5 , where the display panel includes:

[0079] The substrate 21 includes a display area aa and a peripheral area wa located outside the display area. The peripheral area wa includes a bottom peripheral area wa1 and two side peripheral areas wa2. The bottom peripheral area wa1 is adjacent to the two side peripheral areas wa2 respectively, and the two side peripheral areas wa2 are located on opposite sides of the display area aa respectively.

[0080] The support pattern 22 is located on the substrate 21. The support pattern 22 includes a plurality of first support structures 221 located in the side peripheral areas wa2.

[0081] A first electroluminescent layer 231 and a plurality of light-emitting units 24 are located on a side of the support pattern 22 away from the substrate 21. The orthographic projection of the plurality of light-emitting units 24 on the substrate is located in the display area aa, and the orthographic projection of the first electroluminescent layer 231 on the substrate 21 is located in the side peripheral areas wa2. The light-emitting unit 24 includes a plurality of second electroluminescent layers 241. The first electroluminescent layer 231 and a second electroluminescent layer 241 ( Figure 5 the second electroluminescent layer 241 having the same filling pattern as the first electroluminescent layer 231 can be in the same layer as the first electroluminescent layer 231, but the embodiments of the present disclosure do not limit this) are of the same layer structure. Among them, the first electroluminescent layer 231 can be a film layer formed in the side peripheral areas wa2 simultaneously when forming a second electroluminescent layer 241 in the display area aa. Different from the second electroluminescent layer 241 in the display area aa, the first electroluminescent layer 231 does not undertake the function of light-emitting display, and the first electroluminescent layer 231 can be a structure without a pattern.

[0082] The light extraction layer 25 covers the plurality of light-emitting units 24 (in order to clearly show the underlying structure, Figure 4 the light extraction layer is not shown).

[0083] The dam 26 is located in the peripheral area wa and arranged around the display area aa. The first support structure 221 is located between the orthographic projection of the dam 26 on the substrate 21 and the orthographic projection of the first electroluminescent layer 231 on the substrate 21.

[0084] The control circuit 27 is located in the bottom peripheral area wa1. The control circuit 27 can include circuits such as an integrated circuit (IC), and the embodiments of the present disclosure do not limit this.

[0085] In addition, the display panel may further include a packaging layer 28, and the packaging layer 28 covers structures such as the dam 26 and the light extraction layer 25, etc., for packaging and protecting some underlying structures.

[0086] It should be noted that the two structures involved in the embodiments of the present disclosure are of the same layer structure, which may mean that these two structures are formed by a single process (such as an evaporation process and a patterning process, etc.) and are composed of the same material. Additionally, the patterning process involved in the embodiments of the present disclosure may include steps such as forming a photoresist, exposure, development, etching, and stripping the photoresist.

[0087] The display panel provided by the embodiments of the present disclosure may be an Organic Light-Emitting Diode (OLED) display panel. Exemplarily, it may be an Active-Matrix Organic Light-Emitting Diode (AMOLED) display panel. Such an AMOLED display panel may be flexible to become a flexible display panel.

[0088] In summary, the display panel provided by the embodiments of the present disclosure includes structures such as a substrate, a support pattern, a dam, and a first electroluminescent layer located in the peripheral region. The support pattern includes a plurality of first support structures located in the peripheral region. The first support structure is located between the orthographic projection of the dam on the substrate and the orthographic projection of the first electroluminescent layer on the substrate. The region between the dam and the first electroluminescent layer is the region near the semi-etching boundary of the mask plate during the manufacturing process of the display panel. The first support structure located in this region can support the mask plate, reducing the possibility of foreign particle generation due to the deformation of the semi-etching boundary of the mask plate, achieving the effect of improving the yield of the display panel. It greatly reduces the reliability risk of the display panel.

[0089] Please refer to Figure 6 , Figure 6 which is a schematic diagram during the manufacturing process of a display panel provided by the embodiments of the present disclosure. Among them, the open mask plate 18 may be a mask plate used in the evaporation (EV) process. The open mask plate 18 has a semi-etching boundary s1. The open mask plate 18 can be used to limit the deposition area of the electroluminescent material on the substrate during the evaporation process, so as to form a first electroluminescent layer 231 in the side peripheral region wa2. Furthermore, the orthographic projection of the end of the semi-etching boundary s1 on the substrate 21 is flush with the boundary of the orthographic projection of the first electroluminescent layer 231 on the substrate 21 (of course, due to certain errors in the evaporation process, there will also be errors between the orthographic projection of the end of the semi-etching boundary s1 on the substrate 21 and the boundary of the orthographic projection of the first electroluminescent layer 231 on the substrate 21, and the present disclosure does not limit this).

[0090] On this basis, the first support structure 221 provided by the present disclosure is located between the orthographic projection of the first electroluminescent layer 231 on the substrate 21 and the dam ( Figure 6Between the positive projections of the structures (not shown in the figure) on the substrate 21, and further during the evaporation process, the first support structure 221 is located within the positive projection of the mask frame of the open mask or the fine metal mask on the substrate 21. In this way, the first support structure 221 can support the half-etch boundary in these masks, thereby reducing the contact stress between the mask and the contact position in the display panel, reducing the generation probability of foreign particles, achieving the effect of improving the yield of the display panel, and enhancing the display effect of the display panel. The reliability risk of the display panel is greatly reduced.

[0091] Figure 7 is Figure 3 An enlarged schematic diagram of another partial area (area q2) in the display panel shown. Figure 8 is Figure 7 A schematic cross-sectional structure diagram (the cross-sectional position is B-B) of the display panel shown. Please refer to Figure 7 and Figure 8 Among them, the first support structure 221 is located between the positive projection of the edge 251 of the light extraction layer 25 in the side peripheral area and the positive projection of the first electroluminescent layer 231 on the substrate 21. Among them, the light extraction layer 25 is attached to the underlying light-emitting unit 24. The material of the light extraction layer 25 may include an organic material for improving the light extraction rate of the light emitted by the light-emitting unit 24. The light extraction layer 25 may also be referred to as a capping layer (Capping Layer, CPL). The light extraction layer 25 can be formed by an evaporation process.

[0092] Compared with Figure 5 the display panel shown, Figure 7 and Figure 8 In the display panels shown, the first support structure 221 is farther away from the dam 26 and correspondingly closer to the half-etch boundary of the mask or the mask frame. In such a structure, the supporting effect of the first support structure 221 on the half-etch boundary is stronger. In this way, the contact stress between the half-etch boundary and the contact position in the display panel can be further reduced to reduce the generation probability of foreign particles, achieving the effect of improving the yield of the display panel. The reliability risk of the display panel is greatly reduced.

[0093] In addition, the display panel may further include a packaging layer 28, which covers the dam 26, the light extraction layer 25 and other structures above, for packaging and protecting some of the underlying structures. The packaging layer 28 may be a multi-layer composite structure. For example, it may include two inorganic layers and an organic layer located between the two inorganic layers. Alternatively, the packaging layer 28 may also be other structures, and the embodiments of the present disclosure do not limit this.

[0094] Figure 9 is Figure 3Schematic diagram of an enlarged structure of another partial area (area q2) in the shown display panel Figure 10 is Figure 9 Schematic diagram of a cross-sectional structure in the shown display panel (the cross-sectional position is C-C), please refer to Figure 9 and Figure 10 , the display panel further includes an encapsulation layer 28, the encapsulation layer 28 is located on the side of the plurality of light-emitting units away from the substrate, and covers the dam (in order to clearly show the underlying structure, Figure 9 the encapsulation layer is not shown).

[0095] The touch control circuit 29 is located on the side of the encapsulation layer 28 away from the substrate 21. The touch control circuit 29 includes a first touch control circuit 291 and a second touch control circuit 292. The orthographic projection of the first touch control circuit 291 on the substrate 21 is located in the active display area aa, and the orthographic projection of the second touch control circuit 292 on the substrate 21 is located in the side peripheral area wa2. There is an overlap between the orthographic projection of the first support structure 221 and the second touch control circuit 292 on the substrate 21.

[0096] In such a structure, the second touch control circuit 292 can cover the first support structure 221. The display panel provided by the present disclosure newly adds a first support structure 221 that can support a mask or a mask frame. The first support structure 221 may contact the mask or the mask frame, and under the extrusion of the mask or the mask frame, foreign particles are generated above the side of the first support structure 221 away from the substrate 21, while Figure 9 and Figure 10 in the shown display panel, there is an overlap between the newly added first support structure 221 and the orthographic projection of the second touch control circuit 292 on the substrate 21, that is, the first support structure 221 is located below the second touch control circuit 292. The foreign particles generated by the contact between the first support structure 221 and the mask or the mask frame will be covered by the second touch control circuit 292, and the second touch control circuit 292 plays a role in protecting the encapsulation layer that becomes thinner due to the influence of foreign particles, so as to prevent the thinned part of the encapsulation layer from being etched through in subsequent processes, such as the manufacturing process of a touch sensor panel (TSP) and the scribing channels of a thinning module, etc., reducing the possibility of encapsulation failure of the encapsulation layer.

[0097] It should be noted that Figure 9 and Figure 10The frames of the first touch circuit 291 and the second touch circuit 292 shown are not the actual structures of the first touch circuit 291 and the second touch circuit 292, but are only used to show the locations of the first touch circuit 291 and the second touch circuit 292. The actual structures of the first touch circuit 291 and the second touch circuit 292 may include multiple interlaced circuits, and the present disclosure does not limit this. In actual application, the orthographic projections of the first support structure 221 and the second touch circuit 292 on the substrate overlap. Of course, the first support structure 221 can also be located in the orthographic projection of the second touch circuit 292 on the substrate to further enhance the protection of the second touch circuit 292.

[0098] Figure 11 Schematic diagram of a display panel packaging failure in the related art ( Figure 11 A schematic diagram of a real shot structure of a foreign particle is also shown, wherein a film layer 02 including a flat layer and a pixel definition layer is provided on a substrate 01, a light-emitting unit 03 is located on the film layer 02, and an encapsulation layer 04 covering the light-emitting unit 03, wherein the encapsulation layer 04 includes a first chemical vapor deposition (CVD) layer 041 stacked in sequence from bottom to top, an inkjet printing (ink The foreign particles 05 damage the first CVD layer 041, penetrate the IJP layer 042, and lift up the second CVD layer 043, which results in a thinner thickness of the second CVD layer 043. This thinner second CVD layer 043 may be etched through in the touch panel manufacturing process and the cutting path of the thinning module. In the cutting path process of the thinning module, although there is photoresist above the second CVD layer 043, the foreign particles 05 will form a protrusion on the second CVD layer 043, which results in a thinner thickness of the photoresist of the second CVD layer 043 above the area where the foreign particles 05 are located, making it difficult to completely block the etching, thereby causing the second CVD layer 043 to be etched through.

[0099] After the second CVD layer 043 is etched through, a water vapor intrusion channel penetrating the encapsulation layer 04 is formed. Water vapor in the external environment can penetrate into the display panel through the water vapor intrusion channel and damage structures such as the electroluminescent layer, causing defects such as GDS.

[0100] Figure 12It is a schematic structural diagram of a display panel provided by an embodiment of the present disclosure. Among them, the substrate 21 includes a first polyimide (PI) layer 211, a first barrier layer 212, a second polyimide layer 213, a fourth polyimide layer 214, and a planarization layer 215. The support pattern 22 further includes a second support structure 222 located in the display area aa (the second support structure can be used to support the mask plate when evaporating the electroluminescent material to avoid the mask plate rubbing against various structures in the display area aa). The first support structure 221 and the second support structure 222 are located on the planarization layer 215, and foreign matter particles PT are formed above the first support structure 221. The encapsulation layer 28 includes a first encapsulation layer 281, a second encapsulation layer 282, and a third encapsulation layer 283. The first encapsulation layer 281 and the second encapsulation layer 283 can be inorganic layers formed by chemical vapor deposition layer technology, and the second encapsulation layer 282 can be an organic layer formed by inkjet printing technology. The first encapsulation layer 281 may be damaged due to the action of foreign matter particles PT. The foreign matter particles PT pass through the second encapsulation layer 282 and lift the third encapsulation layer 283. However, since the second touch circuit 292 is covered above, the second touch circuit 292 can protect the third encapsulation layer 283 here in subsequent processes, so that the third encapsulation layer 283 here will not be etched through, thereby avoiding the possibility of encapsulation failure of the third encapsulation layer 283 here.

[0101] Optionally, in the display panel provided by the present disclosure, the dam 26 may include structures such as an inkjet printing (IJP) dam 261, a mini dam 262, and a main dam 263. These dams can play functions such as controlling the diffusion of the encapsulation material, preventing the encapsulation material from overflowing, enhancing the structural stability, moisture-proof and oxygen-proof, and enhancing the encapsulation reliability.

[0102] Figure 13 is Figure 3 An enlarged structural diagram of another partial area (area q3) in the shown display panel. Please refer to Figure 13 and Figure 3 , the display area aa includes a central area aa1 and an edge area aa2. The edge area aa2 is located on the side of the central area aa1 close to the side area wa2. The orthographic projections of multiple light-emitting units 24 on the substrate are located in the central area and the edge area.

[0103] The support pattern 22 further includes a plurality of second support structures 222, and the plurality of second support structures 222 are all located in the central area aa1. That is, the second support structure 222 is not provided in the edge area aa2 close to the edge of the display area aa. Since there is no support of the second support structure 222, the risk of the mask plate rubbing against the second support structure 222 at the edge area aa2 can be eliminated. On this basis, the probability of foreign matter particles forming at the edge area aa2 will also be reduced.

[0104] Please refer to Figure 14 , Figure 14 which is a schematic diagram showing the relationship between the support structure and the thickness of the inkjet printing layer in the encapsulation layer in the display area of a display panel. The encapsulation layer includes two inorganic layers and an inkjet printing layer (the material of the inkjet printing layer is an organic material) located between the two inorganic layers. The horizontal axis represents the number of columns of the support structure. PS1 is the first column of the support structure closest to the edge of the display area, PS2 is the second column of the support structure located on the side of PS1 closer to the center of the display area, and so on. The vertical axis represents the thickness. The farther away from the horizontal axis, the greater the thickness. The curve h1 is the thickness curve of the inkjet printing layer. It can be seen that the closer to the center of the display area, the greater the thickness of the inkjet printing layer. In the encapsulation layer, the thickness of the inkjet printing layer is much greater than the other two inorganic layers. Therefore, the thickness of the encapsulation layer is mainly determined by the inkjet printing layer. If foreign particles are formed in the area where the thickness of the inkjet printing layer is relatively thin (such as the edge area aa2 mentioned above), it is possible that the inkjet printing layer cannot cover the foreign particles, resulting in the foreign particles directly piercing through the inkjet printing layer and lifting the upper inorganic layer. As can be seen from the above embodiments, this situation is likely to cause the encapsulation failure of the encapsulation layer. However, if foreign particles are formed in the area where the thickness of the inkjet printing layer is relatively thick (such as the central area aa1 mentioned above), the relatively thick inkjet printing layer can cover the foreign particles, preventing the foreign particles from lifting the upper inorganic layer, and thus reducing the possibility of encapsulation failure of the encapsulation layer.

[0105] And in the above Figure 13 display panel shown, the second support structure 222 in the edge area aa2 at the edge in the display area aa is removed to reduce the probability of foreign particles being formed at the edge area aa2. If foreign particles are formed in the central area aa1 of the display area aa, since the thickness of the inkjet printing layer in the central area aa1 is relatively thick, compared with the edge area aa2, it can improve the covering effect of the inkjet printing layer on foreign particles, and greatly reduce the reliability risk of the display panel without introducing foreign particles additionally.

[0106] Figure 15 is Figure 3 a schematic enlarged structure diagram of another partial area (area q2) in the display panel shown Figure 16 is Figure 15 a schematic cross-sectional structure diagram (the cross-sectional position is D-D) of the display panel shown. Please refer to Figure 6 , Figure 15 and Figure 16 , where the display panel further includes:

[0107] The connection layer 31 covers the light extraction layer 25. The first orthographic projection 311a of the edge 311 of the connection layer 31 on the substrate 21 and the second orthographic projection 251a of the edge 251 of the light extraction layer 25 on the substrate 21 are both located in the peripheral area wa. The first orthographic projection 311a is located on the side closer to the active display area aa than the second orthographic projection 251a. The first support structure 221 is located between the first orthographic projection 311a and the second orthographic projection 251a. Among them, the connection layer 31 can be used to connect the light extraction layer 25 and the encapsulation layer 28. The material of the connection layer 31 may include lithium fluoride (LiF). The connection layer 31 can be formed by an evaporation process.

[0108] Compared with Figure 7 the display panel shown, Figure 15 and Figure 16 the display panel shown further defines the position of the first support structure 221 in the side peripheral area wa2. The first support structure provided at this position can, on the one hand, reduce the contact stress between the mask and the first support structure, and on the other hand, reduce the possibility of foreign particles forming in the display area. Both of these aspects can reduce the possibility of foreign particles damaging the encapsulation layer, and thus can achieve the effect of improving the yield of the display panel.

[0109] In an exemplary embodiment, the support pattern 22 further includes a plurality of second support structure columns 22b arranged along the first direction f1. Each second support structure column 22b includes a plurality of second support structures 222 arranged along the second direction f2. There is an angle greater than 0 degrees and less than 180 degrees between the first direction f1 and the second direction f2. Figure 15 What is shown is the case where the angle between the first direction f1 and the second direction f2 is 90 degrees, but the embodiments of the present disclosure do not limit this. Exemplarily, the angle between the first direction f1 and the second direction f2 can also be 85 degrees, 80 degrees, 75 degrees, etc.

[0110] A plurality of first support structures 221 are arranged in a first support structure column 22a along a first direction f1 in a side peripheral region wa2, and each first support structure column 22a includes a plurality of first support structures 221 arranged along a second direction f2. Moreover, in a unit length in the second direction f2, the number of first support structures 221 in a first support structure column 22a is greater than the number of second support structures 222 in a second support structure column 22b. Exemplarily, in a unit length in the second direction f2, the number of first support structures 221 in a first support structure column 22a is 110% - 600% of the number of second support structures 222 in a second support structure column 22b. That is to say, the density of the first support structures 221 in the side peripheral region wa2 is greater than the density of the second support structures 222 in the display region aa. In this way, by arranging a high density of first support structures 221 in the side peripheral region wa2, the supporting force of the first support structures 221 for the mask or the mask frame can be improved, and the probability of foreign particles forming in the display region is reduced.

[0111] It should be noted that Figure 15 The structure shown has only one first support structure column 22a, but the embodiments of the present disclosure do not limit this. Exemplarily, the number of first support structure columns 22a can also be 2, 3 or more.

[0112] In an exemplary embodiment, a first support structure column 22a includes a plurality of first support structure groups 221a, each first support structure group 221a includes at least one first support structure 221, and any two adjacent first support structure groups 221a in the plurality of first support structure groups 221a are arranged in a staggered manner in the second direction f2. This staggered arrangement can further improve the supporting effect of the first support structures 221 on the mask or the mask frame, and thus can also reduce the probability of foreign particles forming in the display region.

[0113] In an exemplary embodiment, a first support structure group 221a includes at least two first support structures 221, and at least two first support structures 221 in a first support structure group 221a are arranged in alignment in the second direction f2. Figure 15 The case where a first support structure group 221a includes two first support structures 221 is shown, but a first support structure group 221a can also include more first support structures 221, such as 3, 4, 5 or more. The embodiments of the present disclosure do not limit this.

[0114] In addition, Figure 15 and Figure 16 The display panel shown can also be combined with some structures provided in the above embodiments. Exemplarily, please refer to Figure 16, the display panel further includes a touch control circuit 29 (in order to clearly show some structures, Figure 15 the touch control circuit 29 is not shown in Figure 15 , but this is not limited thereto), the touch control circuit 29 is located on the side of the encapsulation layer 28 away from the substrate 21, the touch control circuit 29 includes a first touch control circuit 291 and a second touch control circuit 292, the orthographic projection of the first touch control circuit 291 on the substrate 21 is located in the edge area aa2, and the orthographic projection of the second touch control circuit 292 on the substrate 21 is located in the side peripheral area wa2. There is an overlap between the orthographic projection of the first support structure 221 and the second touch control circuit 292 on the substrate 21. As disclosed in the above embodiments, with such a structure, the foreign particles generated by the contact between the first support structure 221 and the mask or the mask frame can be covered by the second touch control circuit 292 covering the first support structure, and the second touch control circuit 292 plays a protective role for the encapsulation layer thinned due to the influence of foreign particles, so as to avoid the thinned part of the encapsulation layer being etched through in subsequent processes, such as the touch panel manufacturing process and the scribe lanes of the thinning module, reducing the possibility of encapsulation failure of the encapsulation layer.

[0115] In addition, please refer to Figure 15 , the display area aa includes a central area aa1 and an edge area aa2, the edge area aa2 is located on the side of the central area aa1 close to the side area wa2, and the orthographic projections of the plurality of light-emitting units 24 on the substrate are located in the central area and the edge area. The support pattern 22 further includes a plurality of second support structures 222, and the plurality of second support structures 222 are all located in the central area aa1. The second support structures 222 are not provided in the edge area aa2 close to the edge of the display area aa. As disclosed in the above embodiments, due to the absence of the support of the second support structures 222, the risk of the mask rubbing against the second support structures 222 at the edge area aa2 can be eliminated. On this basis, the probability of foreign particles forming at the edge area aa2 will also be reduced. If foreign particles form in the central area aa1 of the display area aa, since the thickness of the inkjet printing layer in the central area aa1 is relatively thick, compared with the edge area aa2, the encapsulation effect of the inkjet printing layer on foreign particles can be improved, and without introducing foreign particles additionally, the reliability risk of the display panel is greatly reduced.

[0116] Exemplarily, between any two adjacent second support structure columns 22b in the central area aa1 of the display area aa, the spacing in the first direction f1 is equal and is the target spacing. Then the length of the edge area aa2 of the display area aa in the first direction f1 can be greater than or equal to 2 times the target spacing, that is, it can be considered that two second support structure columns 22b in the edge area aa2 of the display area are removed.

[0117] Please refer to Figure 17 , Figure 17Yes Figure 15 It is a schematic structural diagram in the manufacturing process of the display panel shown, where Figure 17 what is shown is the structure of the display panel before cutting and still in the display master. Among them, the outside of the side peripheral area wa2 of the display panel is the cutting path (Trim Line) TL. The side peripheral area wa2 and the connected display area aa belong to one display panel. Figure 17 It shows partial areas of two uncut display panels. There is also a dummy area (Dummy Area) DA between these two display panels. The support pattern also includes a dummy support structure (Dummy PS) 223 located in the dummy area DA.

[0118] Figure 18 Yes Figure 17 It is a simulation schematic diagram of the contact stress of the display panel shown. Please refer to Figure 18 , where the maximum contact stress point M1 between the fine metal mask FMM and the support structure is located at the dummy support structure 223 in the dummy area. When measuring the stress of the maximum contact stress point M1 between the fine metal mask FMM and the dummy support structure 223 with pressure, the pressure is 12.271 megapascals (MPa).

[0119] Figure 19 Yes Figure 17 It is a simulation schematic diagram of the deformation of the mask of the display panel shown. Please refer to Figure 19 , where the maximum deformation position B1 of the fine metal mask FMM is located at the dummy support structure 223 in the dummy area. The deformation of this maximum deformation position B1 is 0.0035973 micrometers in the direction perpendicular to the plate surface of the display panel 10.

[0120] Correspondingly, please refer to Figure 20 , Figure 20 It is a simulation schematic diagram of the contact stress in a display panel in the related art (the display panel in this related art can be Figure 1 the display panel shown), please refer to Figure 20 , where the maximum stress point M2 between the fine metal mask FMM and the support structure ps is located at ps in the display area, rather than at the dummy support structure dp in the dummy area. When measuring the stress of the maximum contact stress point M2 between the fine metal mask FMM and the support structure ps with pressure, the pressure is 20.886 megapascals.

[0121] Please refer to Figure 21 , Figure 21 It is a simulation schematic diagram of the deformation of the mask in a display panel in the related art (the display panel in this related art can be Figure 1the shown display panel), wherein, the maximum deformation position B2 of the fine metal mask FMM is located at the support structure ps at the boundary of the display area aa. The deformation of the maximum deformation position B2 is 0.011747 microns in the direction perpendicular to the plate surface of the display panel 10.

[0122] It can be seen from the above simulation schematic diagram that compared with the display panel in the related art, the Figure 15 and Figure 16 shown display panel has at least the following three aspects of effects:

[0123] First aspect: The stress at the maximum contact stress point between the fine metal mask and the support structure is reduced, and it is reduced by about 41.25%.

[0124] Second aspect: The position of the maximum contact stress point and the maximum deformation position of the fine metal mask are transferred from the display area to the virtual area. Both the first aspect and the second aspect can reduce the probability that foreign particles are formed in the display area and affect the normal display of the display area, and thus achieve the effect of improving the yield of the display panel.

[0125] Third aspect: The deformation amount of the fine metal mask FMM at the maximum deformation position is reduced by about 69.37%. According to the capacitance calculation formula: where C is the capacitance, εS is the dielectric constant, π is the pi, and k represents the relative dielectric constant of the medium filled in the capacitor. The d value is the distance between two capacitor plates. The smaller the d value, the larger the capacitance value between the two capacitor plates. In the embodiment of the present disclosure, the distance between the fine metal mask FMM and the anode is this d, and the deformation amount of the fine metal mask FMM at the maximum deformation position is inversely proportional to the d value. That is, in the embodiment of the present disclosure, by reducing the deformation amount of the fine metal mask FMM at the maximum deformation position by 69.37%, the capacitance between the fine metal mask FMM and the anode is greatly reduced, the risk of ESD is reduced, and at the same time the incidence rate of H-Z PT is reduced.

[0126] After testing, compared with Figure 1 the shown display panel in the related art, the display panel provided by the embodiment of the present disclosure can reduce the reliability risk of the display panel by more than 90%.

[0127] Figure 22 is Figure 3 the enlarged structural schematic diagram of another partial area (area q2) in the shown display panel, Figure 23 is Figure 22 a schematic cross-sectional structure diagram (the cross-sectional position is D-D) of the shown display panel, Figure 24 is Figure 22A schematic diagram of the display panel during the manufacturing process is shown. Please refer to Figure 22 , Figure 23 and Figure 24 , wherein the display panel further includes:

[0128] The connection layer 31 is located on the side of the light extraction layer 25 away from the substrate 21.

[0129] The first support structure 221 is located between the orthographic projection 311a of the edge 311 of the connection layer 31 in the side peripheral region wa2 and the orthographic projection of the first electroluminescent layer 231 on the substrate 21.

[0130] Compared with Figure 15 and Figure 16 the display devices shown, Figure 22 and Figure 23 in the display devices shown, the position of the first support structure 221 is closer to the boundary of the display area aa. With the first support structure 221 of such a structure, the contact stress between the mask and the first support structure can also be reduced, and the possibility of foreign particle formation in the display area can be reduced. Both aspects can reduce the possibility of foreign particles damaging the encapsulation layer, and thus the yield of the display panel can be improved.

[0131] In an exemplary embodiment, the support pattern further includes a plurality of second support structure columns 22b arranged along the first direction f1. Each second support structure column 22b includes a plurality of second support structures 222 arranged along the second direction f2. There is an angle greater than zero degrees and less than 180 degrees between the first direction f1 and the second direction f2.

[0132] The plurality of first support structures 221 are arranged as at least one first support structure column 22a along the first direction f1 in the peripheral region wa. Each first support structure column 22a includes a plurality of first support structure groups 221a arranged along the second direction f2. Each first support structure group 221a includes at least one first support structure 221. At least one target support structure group 221a1 is included in the plurality of first support structure groups 221a. The second support structures 222 in the target support structure group 221a1 are aligned in the first direction f1. When the first support structure groups 221a in the side peripheral region are aligned with the second support structures in the display area aa, the uniformity of the force on each area in the display area aa of the fine metal mask can be improved, and the problem of the fine metal mask having a wavy morphology due to a large stress difference at each point can be avoided.

[0133] It should be noted that the second support structure 222 aligned with the target support structure group 221a1 in the first direction f1 may mean that there is a virtual straight line parallel to the first direction f1, and this straight line can pass through the target support structure group 221a1 and the second support structure 222.

[0134] Optionally, each first support structure group 221a includes at least two first support structures 221. The arrangement of at least two first support structures 221 in a group can improve the support effect of the first support structure 221 on the mask or mask frame, and reduce the possibility of foreign particles forming in the display area. Figure 22 What is shown is a case where two first support structures 221 are included in a first support structure group 221a, but a first support structure group 221a may also include 3, 4, 5 or more first support structures 221, and the embodiments of the present disclosure do not limit this.

[0135] In addition, Figure 22 and Figure 23 The shown display panel may also incorporate some structures provided in the above embodiments, such as the content about the second touch circuit 292 covering the first support structure 221 and not setting the second support structure 222 in the edge area aa2, etc., and the embodiments of the present disclosure will not elaborate on this here.

[0136] In an exemplary embodiment, the number of the first electroluminescent layers 231 is multiple, and the multiple first electroluminescent layers 231 are stacked in the side peripheral area wa2 and are respectively of the same layer structure as the multiple second electroluminescent layers 241. The multiple first electroluminescent layers 231 may be film layers formed in the side peripheral area wa2 together when forming the multiple second electroluminescent layers 241. Among them, the multiple second electroluminescent layers 241 may be some film layers for realizing the light-emitting function of the light-emitting unit. Exemplarily, the multiple second electroluminescent layers 241 may include: a hole injection layer (Hole Injection Layer, HIL), a hole transport layer (Hole Transport Layer, HTL), an emissive layer (Emissive Layer, EML), an electron transport layer (Electron Transport Layer, ETL), and an electron injection layer (Electron Injection Layer, EIL) and other film layers.

[0137] Figure 25 is Figure 22 A simulation diagram of a contact stress of the shown display panel, please refer to Figure 25, wherein, the maximum contact stress point M3 between the fine metal mask FMM and the support structure is located at the virtual support structure 223 in the virtual area. When measuring the stress of the maximum contact stress point M3 between the fine metal mask FMM and the virtual support structure 223 with pressure, the pressure is 17.27 megapascals (MPa).

[0138] Figure 26 is Figure 22 a simulation schematic diagram of a mask deformation of the display panel shown. Please refer to Figure 26 , wherein, the maximum deformation position B3 of the fine metal mask FMM is located at the virtual support structure 223. The deformation of the maximum deformation position B3 is 0.011307 micrometers in the direction perpendicular to the plate surface of the display panel 20.

[0139] It can be seen from the above simulation schematic diagram that compared with the display panel in the related art, the Figure 22 、 Figure 23 and Figure 24 display panel shown has at least the following three aspects of effects:

[0140] First aspect: The stress of the maximum contact stress point between the fine metal mask and the support structure is reduced, and it is reduced by about 17.29%.

[0141] Second aspect: The position of the maximum contact stress point and the maximum deformation position of the fine metal mask are transferred from the display area to the virtual area. Both the first aspect and the second aspect can reduce the probability that foreign particles are formed in the display area and affect the normal display of the display area, thereby achieving the effect of improving the yield of the display panel.

[0142] Third aspect: The amount of deformation of the fine metal mask FMM at the maximum deformation position is reduced by about 3.75%. From the above discussion, it can be seen that in this way, the capacitance between the fine metal mask FMM and the anode is reduced, the risk of ESD is reduced, and at the same time, the incidence rate of H-Z PT is reduced.

[0143] In addition, compared with the Figure 15 and Figure 16 display panels shown, Figure 22 and Figure 23 in the display panels shown, the density of the first support structure 221 is relatively low, and thus the second touch circuit 292 is more likely to cover the first support structure 221. After testing, compared with the Figure 1 display panel in the related art shown, the display panel provided by the embodiment of the present disclosure can also reduce the reliability risk of the display panel by more than 90%.

[0144] Figure 27It is a schematic structural diagram of a display panel during manufacturing provided by an embodiment of the present disclosure( Figure 27 The figure shown can be a schematic structural diagram of a display mother board including the display panel provided by an embodiment of the present disclosure), Figure 28 is Figure 27 an enlarged structural diagram of a partial area in (this partial area is q4), please refer to Figure 27 and Figure 28 , wherein, the display panel 20 further includes:

[0145] A pixel definition layer (Pixel Definition Layer, PDL) 32, located on the substrate 21. The pixel definition layer 32 includes a plurality of openings k1, and a plurality of first support structures 221 are located in the plurality of openings k1. By disposing the first support structure 221 in the opening k1 of the pixel definition layer 32, it is possible to avoid the influence of the setting of the first support structure 221 on the structure of the pixel definition layer 32, thereby reducing the setting difficulty of the first support structure 221 in the display panel provided by the embodiment of the present disclosure, and also reducing the manufacturing cost of the display panel provided by the embodiment of the present disclosure.

[0146] In addition, the pixel definition layer 32 and the support pattern 22 can be of the same layer structure. In this way, the pixel definition layer 32 and the support pattern 22 can be formed through a single lithography process. When manufacturing the display panel provided by the embodiment of the present disclosure, the mask used to form the pixel definition layer in the related art can be modified, and the remaining processes do not need to be changed, and then the display panel provided by the embodiment of the present disclosure can be manufactured, which has little impact on the existing process, and thus achieves the effect of reducing the manufacturing cost of the display panel.

[0147] It should be noted that the display panel provided by the embodiment of the present disclosure can be rectangular, and thus includes two side peripheral areas on two opposite sides of the rectangle. From the above content, it can be seen that the embodiment of the present disclosure provides various structures for the side peripheral area and the adjacent edge area (the edge area in the display area). These various structures can be applied to these two side peripheries and the adjacent edge areas, or can be applied to only one of the side peripheries and the adjacent edge areas. The embodiment of the present disclosure does not limit this.

[0148] In summary, the display panel provided by the embodiments of the present disclosure includes structures such as a substrate, a support pattern, a dam, and a first electroluminescent layer located in the peripheral region. The support pattern includes a plurality of first support structures located in the peripheral region, and the first support structure is located between the orthographic projection of the dam on the substrate and the orthographic projection of the first electroluminescent layer on the substrate. The region between the dam and the first electroluminescent layer is the region near the half-etch boundary of the mask plate during the manufacturing process of the display panel. The first support structure located in this region can support the mask plate, reducing the possibility of foreign particles generated due to the deformation of the half-etch boundary of the mask plate, and achieving the effect of improving the yield of the display panel. The reliability risk of the display panel is greatly reduced.

[0149] In addition, the embodiments of the present disclosure further provide a display device, which includes a housing and any one of the display panels provided by the above embodiments.

[0150] The display device can be various electronic devices with a display function such as a mobile phone, a tablet computer, a display, a television, a laptop computer, a vertical display screen, an outdoor display screen, a smart watch, a smart bracelet, a camera, and a video camera, and will not be listed one by one here.

[0151] After considering the specification and practicing the content disclosed herein, those skilled in the art will readily think of other embodiments of the present disclosure. This application is intended to cover any variations, uses, or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common general knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the appended claims.

Claims

1. A display panel, characterized in that: include: A substrate, comprising a display area and a peripheral area outside the display area, wherein the peripheral area comprises a bottom peripheral area and two side peripheral areas, wherein the bottom peripheral area is adjacent to the two side peripheral areas respectively, and the two side peripheral areas are respectively located on two opposite sides of the display area; A support pattern, located on the substrate, the support pattern comprising a plurality of first support structures located in the side peripheral area; A first electroluminescent layer and a plurality of light-emitting units located on a side of the support pattern away from the substrate, wherein the orthographic projections of the plurality of light-emitting units on the substrate are located in the display area, the orthographic projections of the first electroluminescent layer on the substrate are located in the side peripheral area, and the light-emitting unit includes a plurality of second electroluminescent layers, wherein the first electroluminescent layer and one of the second electroluminescent layers are in the same layer structure; A light extraction layer covering the plurality of light emitting units; A dam is located in the peripheral area and arranged around the display area, and the first supporting structure is located between an orthographic projection of the dam on the substrate and an orthographic projection of the first electroluminescent layer on the substrate; The control circuit is located in the bottom peripheral area.

2. The display panel according to claim 1, characterized in that: The first supporting structure is located between the orthographic projection of the edge of the light extraction layer on the side peripheral area and the orthographic projection of the first electroluminescent layer on the substrate.

3. The display panel according to claim 1, characterized in that: The display panel further includes: an encapsulation layer, the encapsulation layer being located on a side of the plurality of light-emitting units away from the substrate and covering the dam; A touch circuit, the touch circuit is located on a side of the packaging layer away from the substrate, the touch circuit includes a first touch circuit and a second touch circuit, the orthographic projection of the first touch circuit on the substrate is located in the effective display area, and the orthographic projection of the second touch circuit on the substrate is located in the side peripheral area; The orthographic projections of the first supporting structure and the second touch control circuit on the substrate overlap.

4. The display panel according to claim 1, characterized in that: The display area includes a central area and an edge area, the edge area is located on a side of the central area close to the side area, and the orthographic projections of the plurality of light-emitting units on the substrate are located in the central area and the edge area; The support pattern also includes a plurality of second support structures, and the plurality of second support structures are all located in the central area.

5. The display panel according to claim 2, characterized in that: The display panel further includes: A connecting layer, wherein the connecting layer covers the light extraction layer, and a first orthographic projection of an edge of the connecting layer on the substrate and a second orthographic projection of an edge of the light extraction layer on the substrate are both located in the peripheral area, and the first orthographic projection is located on a side of the second orthographic projection close to the effective display area; The first support structure is located between the first orthographic projection and the second orthographic projection.

6. The display panel according to claim 5, characterized in that: The support pattern further includes a plurality of second support structure columns arranged along the first direction, each of the second support structure columns includes a plurality of second support structures arranged along the second direction, and an angle between the first direction and the second direction is greater than zero and less than 180 degrees; The multiple first support structures are arranged into at least one first support structure column along the first direction in the side peripheral area, each of the first support structure columns includes a plurality of first support structures arranged along the second direction, and per unit length in the second direction, the number of first support structures in one of the first support structure columns is greater than the number of second support structures in one of the second support structure columns.

7. The display panel according to claim 6, characterized in that: One first support structure column includes a plurality of first support structure groups, each of the first support structure groups includes at least one first support structure, and any two adjacent first support structure groups among the plurality of first support structure groups are staggered in the second direction.

8. The display panel according to claim 7, characterized in that: The first support structure group includes at least two first support structures, and the at least two first support structures are aligned and arranged in the second direction.

9. The display panel according to claim 2, characterized in that: The display panel further includes: A connecting layer, the connecting layer being located on a side of the light extraction layer away from the substrate; The first supporting structure is located between an orthographic projection of an edge of the connection layer on the side peripheral region and an orthographic projection of the first electroluminescent layer on the substrate.

10. The display panel according to claim 9, characterized in that: The support pattern further includes a plurality of second support structure columns arranged along the first direction, each of the second support structure columns includes a plurality of second support structures arranged along the second direction, and an angle between the first direction and the second direction is greater than zero and less than 180 degrees; The multiple first support structures are arranged in the peripheral area along the first direction into at least one first support structure column, each of the first support structure columns includes a plurality of first support structure groups arranged along the second direction, each first support structure group includes at least one first support structure, and the multiple first support structure groups include at least one target support structure group, which has the second support structure aligned in the first direction.

11. The display panel according to claim 10, characterized in that: Each of the first supporting structure groups includes at least two first supporting structures.

12. The display panel according to any one of claims 1 to 11, characterized in that: The display panel further includes: The pixel definition layer is located on the substrate, the pixel definition layer comprises a plurality of openings, and the plurality of first support structures are located in the plurality of openings.

13. The display panel according to claim 12, characterized in that: The pixel definition layer and the support pattern are in the same layer structure.

14. The display panel according to any one of claims 1 to 11, characterized in that: There are a plurality of first electroluminescent layers, and the plurality of first electroluminescent layers are stacked in the side peripheral region and are in the same layer structure as the plurality of second electroluminescent layers respectively.

15. A display device, characterized in that: The display device comprises a housing and the display panel according to any one of claims 1 to 14.

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