Display panel

Abstract

The display panel of the present invention comprises: a base layer; a pixel defining film disposed on the base layer and having a light emitting opening disposed in a display region; a barrier wall disposed on the pixel defining film and having a barrier wall opening portion disposed in the display region and overlapping the light emitting opening portion; an anode disposed in the display region and at least a portion of which is exposed through the light-emitting opening; a cathode disposed within the display region and in contact with the barrier wall within the barrier wall opening; a light emitting pattern disposed between the anode and the cathode; and an anchor disposed in a non-display area surrounding at least a part of the display area.

Description

TECHNICAL FIELD

[0001] The present application relates to a display panel, and more particularly, to a display panel with improved display quality. BACKGROUND

[0002] Display devices such as televisions, monitors, smart phones, and tablets that provide images to users include display panels that display images. As display panels, various display panels such as liquid crystal display panels, organic light emitting display panels, electro wetting display panels, and electrophoretic display panels are being developed.

[0003] An organic light emitting display panel can include an anode, a cathode, and a light emitting pattern. The light emitting pattern can be separated in each light emitting area, and the cathode can provide a common voltage to each light emitting area. SUMMARY

[0004] An object of the present application is to provide a display panel with improved process reliability in a display panel in which a light emitting element is formed without using a metal mask.

[0005] A display panel according to the present application includes a base layer, a pixel defining film disposed on the base layer and having a light emitting opening portion disposed within a display area, a barrier wall disposed on the pixel defining film and having a barrier wall opening portion disposed within the display area and overlapping the light emitting opening portion, an anode disposed within the display area and exposed by at least a portion of the light emitting opening portion, a cathode disposed within the display area and in contact with the barrier wall within the barrier wall opening portion, a light emitting pattern disposed between the anode and the cathode, and an anchor disposed within a non-display area surrounding at least a portion of the display area.

[0006] The barrier wall can include a first barrier wall layer disposed on the pixel defining film, and a second barrier wall layer disposed on the first barrier wall layer, and the barrier wall opening portion can include a first opening area defined by an inner side surface of the first barrier wall layer, and a second opening area defined by an inner side surface of the second barrier wall layer and having a width smaller than the first opening area.

[0007] The display panel according to an embodiment can further include a first dummy pattern including a first-1 layer dummy pattern formed of the same substance as the light emitting pattern and a second-1 layer dummy pattern formed of the same substance as the cathode, and disposed on the barrier ribs; and a lower encapsulation inorganic pattern at least partially overlapping the barrier rib opening portion and covering the cathode.

[0008] The non-display area can include a first non-display area, and a second non-display area spaced apart from the display area via the first non-display area, and the barrier ribs can include an inner side portion disposed in the display area and having the barrier rib opening portion, and an outer side portion disposed in the second non-display area and having an outer side opening portion.

[0009] The display panel according to an embodiment can further include a driving voltage line at least partially disposed in the second non-display area and receiving a bias voltage, and the outer side portion of the barrier ribs can be connected to the driving voltage line in the second non-display area.

[0010] The barrier ribs can further include an anchor portion disposed in the first non-display area and having an anchor opening portion, and the anchor can be provided through the anchor portion of the barrier ribs.

[0011] The anchor opening portion can include a third opening area defined by an inner side surface of the first barrier rib layer, and a fourth opening area defined by an inner side surface of the second barrier rib layer and having a width smaller than that of the third opening area.

[0012] The display panel according to an embodiment can further include a second dummy pattern including a first-2 layer dummy pattern formed of the same substance as the light emitting pattern and a second-2 layer dummy pattern formed of the same substance as the cathode, and disposed in the anchor opening portion, and a third dummy pattern including a first-3 layer dummy pattern formed of the same substance as the light emitting pattern and a second-3 layer dummy pattern formed of the same substance as the cathode, and disposed on the anchor portion of the anchor.

[0013] The display panel according to an embodiment can further include an outer side lower encapsulation inorganic pattern disposed in the non-display area and covering the second dummy pattern and the third dummy pattern.

[0014] The anchor opening portion can be provided in plural, and the plural anchor opening portions can be arranged in a matrix form on a plane.

[0015] The anchor opening portion can have any one of a linear shape, a mesh shape, and a zigzag shape in a plan view.

[0016] The display panel can further include an anchor pattern disposed in the first non-display area and spaced apart from the barrier wall, each of the anchor pattern including a first anchor layer disposed on the pixel defining film and formed of the same material as the first barrier wall layer, and a second anchor layer disposed on the first anchor layer and formed of the same material as the second barrier wall layer, an outer side surface of the second anchor layer being more protruded than an outer side surface of the first anchor layer, the anchor being provided through the anchor pattern.

[0017] The display panel according to an embodiment can further include a second dummy pattern including a first-2 layer dummy pattern formed of the same material as the light emitting pattern and a second-2 layer dummy pattern formed of the same material as the cathode, and disposed on an upper surface of the pixel defining film exposed from the anchor pattern, a third dummy pattern including a first-3 layer dummy pattern formed of the same material as the light emitting pattern and a second-3 layer dummy pattern formed of the same material as the cathode, and respectively disposed on the anchor pattern, and an outer side underfill inorganic pattern disposed in the first non-display area and covering the second dummy pattern and the third dummy pattern.

[0018] The anchor pattern can be arranged in a matrix form in a plan view, or each of the anchor patterns can have any one of a linear shape, a mesh shape, and a zigzag shape in a plan view.

[0019] The display panel according to an embodiment can further include an anchor layer disposed in the first non-display area and spaced apart from the barrier wall, and having an inverted tapered shape in a cross section, the anchor being provided through the anchor layer.

[0020] The display panel according to an embodiment can further include an insulating layer disposed below the pixel defining film and having a recess in the first non-display area, the pixel defining film having an anchor opening portion overlapping the recess and being integrated with the recess, the recess and the anchor opening portion providing a trench, the anchor being provided through the insulating layer disposed in the first non-display area and the pixel defining film disposed in the first non-display area.

[0021] The recess can have a maximum width in a cross section that is wider than a width of the anchor opening portion in a cross section, and a portion of the pixel defining film protruding toward an inside of the trench from the insulating layer can define an end portion.

[0022] may be characterized in that the display area includes: first and second straight sides spaced apart from each other in a first direction and extending along a second direction intersecting the first direction; third and fourth straight sides spaced apart from each other in the second direction and extending along the first direction; and first, second, third, and fourth curved sides respectively disposed between the first and third straight sides, between the second and third straight sides, between the second and fourth straight sides, and between the first and fourth straight sides, the first non-display area including: first and second 1-1 straight regions respectively extending along the first and second straight sides; third and fourth 1-1 straight regions respectively extending along the third and fourth straight sides; and first, second, third, and fourth 1-1 curved regions respectively extending along the first through fourth curved sides, the anchor being disposed within at least a portion of the first through fourth 1-1 curved regions.

[0023] A display panel according to the present application includes: a base layer; a pixel defining film disposed on the base layer and having a light emitting opening portion disposed within a display area; a barrier wall disposed on the pixel defining film and having a barrier wall opening portion disposed within the display area and overlapping the light emitting opening portion; an anode disposed within the display area and exposed by at least a portion of the light emitting opening portion; a cathode disposed within the display area and in contact with the barrier wall within the barrier wall opening portion; a light emitting pattern disposed between the anode and the cathode; an anchor disposed within a first non-display area surrounding at least a portion of the display area; a first dummy pattern disposed on the barrier wall within the display area; a second dummy pattern disposed on an upper surface of the pixel defining film exposed from the anchor within the first non-display area; a third dummy pattern disposed on the anchor within the first non-display area; and an outside underfill inorganic pattern covering the anchor, the second dummy pattern, and the third dummy pattern, the barrier wall including: an inside portion disposed within the display area; and an outside portion disposed within a second non-display area spaced apart from the display area across the first non-display area.

[0024] may be characterized in that the anchor has any one of an undercut shape, an inverted taper shape, and a groove shape in cross section. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1a is a perspective view of a display device according to an embodiment of the present application.

[0026] Figure 1b is an exploded perspective view of a display device according to an embodiment of the present application.

[0027] Figure 2 is a cross-sectional view of a display module according to an embodiment of the present application.

[0028] Figure 3 is a plan view of a display panel according to an embodiment of the present application.

[0029] Figure 4 is a plan view of a portion of a display area of a display panel according to an embodiment of the present application, enlarged.

[0030] Figure 5 is a cross-sectional view of a portion of a display area of a display panel according to an embodiment of the present application, enlarged.

[0031] Figure 6 is a cross-sectional view of a display panel according to an embodiment of the present application, taken along the I-I' intercept line. Figure 4

[0032] Figure 7 is a plan view of a portion of a display panel according to an embodiment of the present application, enlarged.

[0033] Figure 8 is a cross-sectional view of a portion of a display area and a non-display area of a display panel according to an embodiment of the present application, enlarged.

[0034] Figure 9 is a cross-sectional view of a portion of a first non-display area of a display panel according to an embodiment of the present application, enlarged.

[0035] Figure 10 is a plan view of a portion of a display panel according to an embodiment of the present application, enlarged.

[0036] Figure 11 is a cross-sectional view of a portion of a first non-display area of a display panel according to an embodiment of the present application, enlarged.

[0037] Figure 12a and Figure 12b is a plan view of a portion of a display panel according to an embodiment of the present application, enlarged.

[0038] Figure 13 is a plan view of a portion of a display panel according to an embodiment of the present application, enlarged.

[0039] Figure 14a and Figure 14b is a plan view of a portion of a display panel according to an embodiment of the present application, enlarged. ​

[0040] Figure 15 is a plan view of a display panel according to an embodiment of the present application.

[0041] Figure 16 and Figure 17 is a cross-sectional view of a portion of a first non-display area of a display panel according to an embodiment of the present application, enlarged.

[0042] Figure 18 is a cross-sectional view of a portion of a first non-display area of a display panel according to an embodiment of the present application, enlarged. DETAILED DESCRIPTION

[0043] In the present specification, in the case where any one constitutional element (or region, layer, part, etc.) is mentioned to be "on", "connected to", or "joined to" another constitutional element, it means that it can be directly disposed / connected / joined to the other constitutional element or a third constitutional element can be further disposed therebetween.

[0044] The same reference numerals refer to the same constitutional elements. Also, in the drawings, the thickness, proportions, and sizes of the constitutional elements are exaggerated for effective explanation of technical contents. "And / or" includes all combinations of the structures capable of being defined in relation to each other.

[0045] The terms of first, second, etc. can be used to explain various constitutional elements, but the above constitutional elements cannot be limited by the above terms. The above terms are used only for the purpose of distinguishing one constitutional element from the other constitutional elements. For example, a first constitutional element can be named a second constitutional element, and similarly a second constitutional element can also be named a first constitutional element, without departing from the scope of the present application. The singular expression includes the plural expression unless it is explicitly different in the context.

[0046] Also, the terms of "under", "lower side", "over", "upper side", etc. are used for explaining the relational expression of the structures illustrated in the drawings. The above terms are relative concepts, and are explained based on the direction indicated in the drawings.

[0047] The terms of "include" or "have" etc. should be understood to designate that there exists the characteristics, numbers, steps, operations, constitutional elements, parts, or combinations thereof described in the specification, and do not preclude the existence or additional possibility of one or more other characteristics or numbers, steps, operations, constitutional elements, parts, or combinations thereof.

[0048] Unless specifically defined otherwise in the specification, all terms used herein including technical and scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Also, unless otherwise defined, all terms used herein, including technical and scientific terms, should be interpreted the same as commonly understood by one of ordinary skill in the art to which this application belongs and not in an overly formal or overly technical sense, unless expressly so defined herein.

[0049] Hereinafter, an embodiment of the present application will be described with reference to the accompanying drawings.

[0050] Figure 1a is a perspective view of a display device according to an embodiment of the present application. Figure 1b is an exploded perspective view of a display device according to an embodiment of the present application. Figure 2 is a sectional view of a display module according to an embodiment of the present application.

[0051] In an embodiment, the display device DD can be a large electronic device such as a television, a monitor, or an outdoor billboard. In addition, the display device DD can be a small or medium electronic device such as a personal computer, a notebook computer, a personal digital terminal, a car navigation unit, a game machine, a smart phone, a tablet computer, and a camera. These are presented as an embodiment only, and other display devices can also be employed without departing from the concept of the present application. In the present embodiment, the display device DD is exemplarily shown as a smart phone.

[0052] With reference to Figure 1a , Figure 1b and Figure 2 , the display device DD can display an image IM in a direction parallel to each of the first direction DR1 and the second direction DR2 toward the third direction DR3. The image IM can of course include a dynamic image, as well as a static image. In Figure 1a , a clock window and an icon are shown as examples of the image IM. The display surface FS on which the image IM is displayed can correspond to a front surface of the display device DD.

[0053] In the present embodiment, a front surface (or an upper surface) and a back surface (or a lower surface) of each component are defined with reference to a direction in which the image IM is displayed. The front surface and the back surface can be opposite to each other in the third direction DR3, and a normal direction of each of the front surface and the back surface can be parallel to the third direction DR3. On the other hand, the directions indicated by the first to third directions DR1, DR2, DR3 are as a relative concept, and can be transformed into other directions. In the present specification, "on a plane" can mean when viewed in the third direction DR3.

[0054] As Figure 1bAs shown, the display device DD according to this embodiment may include a window WP, a display module DM, and a housing HAU. The window WP and the housing HAU may be combined with each other to form the appearance of the display device DD.

[0055] The window WP may comprise an optically transparent insulating material. For example, the window WP may comprise glass or plastic. The front surface of the window WP may define a display surface FS of the display device DD. The display surface FS may include a transmissive area TA and a frame area BZA. The transmissive area TA may be an optically transparent area. For example, the transmissive area TA may have a visible light transmittance of approximately 90% or greater.

[0056] The frame area BZA may be a region with relatively lower light transmittance than the transmissive area TA. The frame area BZA may define the shape of the transmissive area TA. The frame area BZA may be adjacent to the transmissive area TA and surround the transmissive area TA. However, this is illustrative only; in a window WP according to an embodiment of the present invention, the frame area BZA may be omitted. The window WP may include at least one functional layer selected from the group consisting of a fingerprint protection layer, a hard coating layer, and an anti-reflection layer, without limitation to any one embodiment.

[0057] The display module DM may be disposed below the window WP. The display module DM may be a structure that substantially generates an image IM. The image IM generated by the display module DM is displayed on the display surface IS of the display module DM and is externally visible to a user through the transmissive area TA.

[0058] The display surface IS of the display module DM includes a display area DA and a non-display area NDA. The display area DA may be activated by an electrical signal. The non-display area NDA is adjacent to the display area DA. The non-display area NDA may surround the display area DA. As the non-display area NDA is covered by the bezel area BZA, it can be invisible to the outside world.

[0059] like Figure 2 As shown, the display module DM may include a display panel DP and an input sensor INS. Although not shown separately, the display device DD according to an embodiment of the present invention (see FIG. Figure 1a ) may further include a protective component disposed under the display panel DP or an anti-reflection component and / or a window component disposed on the upper surface of the input sensor INS.

[0060] The display panel DP may be a light-emitting display panel. However, this is exemplary and not particularly limiting. For example, the display panel DP may be an organic light-emitting display panel or an inorganic light-emitting display panel. The light-emitting layer in an organic light-emitting display panel may include an organic light-emitting substance. The light-emitting layer in an inorganic light-emitting display panel may include quantum dots, quantum rods, or micro-LEDs. Hereinafter, the display panel DP is described as an organic light-emitting display panel.

[0061] The display panel DP may include a base layer BL, a circuit element layer DP-CL disposed on the base layer BL, a display element layer DP-OL, and a thin film encapsulation layer TFE. The input sensor INS may be disposed directly on the thin film encapsulation layer TFE. In this specification, "structure A is disposed directly on structure B" means that no adhesive layer is disposed between the structures A and B.

[0062] The base layer BL may include at least one plastic film. As a flexible substrate, the base layer BL may include a plastic substrate, a glass substrate, a metal substrate, or an organic / inorganic composite material substrate. Figure 1b The display area DA and the non-display area NDA described in the accompanying drawings may be identically defined on the base layer BL.

[0063] The circuit element layer DP-CL may include at least one insulating layer and circuit elements. The insulating layer may include at least one inorganic layer and at least one organic layer. The circuit elements may include signal lines, pixel driving circuits, etc.

[0064] The display element layer DP-OL may include barrier walls and light-emitting elements, which may include an anode, an intermediate layer, and a cathode.

[0065] The thin film encapsulation layer TFE may include multiple thin films, some of which may be configured to improve optical efficiency, and some of which may be configured to protect the organic light emitting diode.

[0066] The input sensor INS obtains coordinate information of an external input. The input sensor INS may have a multi-layer structure. The input sensor INS may include a single or multiple conductive layers. Furthermore, the input sensor INS may include a single or multiple insulating layers. The input sensor INS may sense external inputs using a capacitive method. However, this is exemplary and not limiting. For example, in one embodiment, the input sensor INS may also sense external inputs using electromagnetic induction or pressure sensing. Alternatively, in another embodiment of the present invention, the input sensor INS may be omitted.

[0067] like Figure 1b As shown, the housing HAU can be combined with the window WP to provide a predetermined internal space. The display module DM can be accommodated in the internal space.

[0068] The housing HAU can include a material having relatively high rigidity. For example, the housing HAU can include glass, plastic, or metal, or include a plurality of frames and / or plates composed of a combination thereof. The housing HAU can stably protect the structure of the display device DD contained in the internal space from external impact.

[0069] Figure 3 is a plan view of a display panel according to an embodiment of the present application.

[0070] Referring to Figure 3 The display panel DP can define a display area DA and a non-display area NDA around the display area DA. The display panel DP can include pixels PX and signal lines SGL electrically connected to the pixels PX. The display panel DP can include a driving circuit GDC and a pad portion PLD. The display area DA and the non-display area NDA can be divided by the presence or absence of the pixels PX. The pixels PX can be disposed in the display area DA. The driving circuit GDC and the pad portion PLD can be disposed in the non-display area NDA.

[0071] The pixels PX can be arranged in a first direction DR1 and a second direction DR2. The pixels PX can include a plurality of pixel rows extending in the first direction DR1 and arranged in the second direction DR2, and a plurality of pixel columns extending in the second direction DR2 and arranged in the first direction DR1.

[0072] The signal lines SGL can include gate lines GL, data lines DL, power lines PL, and control signal lines CSL. Each of the gate lines GL can be connected to a corresponding one of the pixels PX, and each of the data lines DL can be connected to a corresponding one of the pixels PX. The power lines PL can be electrically connected to the pixels PX. The control signal lines CSL can be connected to the driving circuit GDC to supply a control signal to the driving circuit GDC.

[0073] The driving circuit GDC can include a gate driving circuit. The gate driving circuit can generate gate signals, and sequentially output the generated gate signals to the gate lines GL. The gate driving circuit can further output another control signal to the pixel driving circuit.

[0074] The pad portion PLD can be a portion to which a flexible circuit substrate is connected. The pad portion PLD can include pixel pads D-PD, which can be pads for connecting the flexible circuit substrate to the display panel DP. Each of the pixel pads D-PD can be connected to a corresponding one of the signal lines SGL. The pixel pads D-PD can be connected to corresponding ones of the pixels PX through the signal lines SGL. In addition, any one of the pixel pads D-PD can be connected to the driving circuit GDC.

[0075] In addition, the pad portion PLD can further include an input pad. The input pad can be a pad for connecting the flexible circuit substrate to the input sensor INS (refer to Figure 2 ). However, the input pad is not limited thereto, and can be provided to the input sensor INS (refer to Figure 2 ) so as to be connected to a separate circuit substrate from the pixel pad D-PD. In addition, the input sensor INS (refer to Figure 2 ) can be omitted, and can further not include the input pad.

[0076] Figure 4 is a plan view that enlarges a portion of a display area of a display panel according to an embodiment of the present application. Figure 4 shows a plan of the display area DA viewed from the display surface IS (refer to Figure 1b ) of the display module DM (refer to Figure 1b ), and shows the arrangement of the light emitting areas PXA-R, PXA-G, PXA-B.

[0077] Referring to Figure 4 , the display area DA can include first to third light emitting areas PXA-R, PXA-G, PXA-B and a peripheral area NPXA surrounding the first to third light emitting areas PXA-R, PXA-G, PXA-B. The first to third light emitting areas PXA-R, PXA-G, PXA-B can respectively correspond to areas from which light is provided from the light emitting elements ED1, ED2, ED3 (refer to Figure 6 ). The first to third light emitting areas PXA-R, PXA-G, PXA-B can be divided according to colors of light emitted toward the outside of the display module DM (refer to Figure 2 ).

[0078] The first to third light emitting areas PXA-R, PXA-G, PXA-B can respectively provide first to third color light having different colors from each other. For example, the first color light can be red light, the second color light can be green light, and the third color light can be blue light. However, examples of the first to third color light are not necessarily limited to the above-described examples.

[0079] Each of the first to third light emitting areas PXA-R, PXA-G, PXA-B can be defined as an area of an upper surface of an anode exposed through a light emitting opening portion described later. The peripheral area NPXA can set boundaries of the first to third light emitting areas PXA-R, PXA-G, PXA-B, and prevent color mixing between the first to third light emitting areas PXA-R, PXA-G, PXA-B.

[0080] Each of the first to third light emitting regions PXA-R, PXA-G, and PXA-B can be provided in plural and repeatedly arranged in a predetermined arrangement in the display region DA. For example, the first and third light emitting regions PXA-R and PXA-B can be alternately arranged along the first direction DR1 to constitute a "first group". The second light emitting region PXA-G can be arranged along the first direction DR1 to constitute a "second group". Each of the "first group" and the "second group" can be provided in plural, and the "first group" and the "second group" can be alternately arranged with each other along the second direction DR2.

[0081] One second light emitting region PXA-G can be arranged apart from one first light emitting region PXA-R or one third light emitting region PXA-B in a fourth direction DR4. The fourth direction DR4 can be defined as a direction crossing each of the first direction DR1 and the second direction DR2 on a plane defined by the first direction DR1 and the second direction DR2.

[0082] On the other hand, Figure 4 The arrangement of the first to third light emitting regions PXA-R, PXA-G, and PXA-B is exemplarily shown, and is not limited thereto, and can be arranged in various forms. In one embodiment, the first to third light emitting regions PXA-R, PXA-G, and PXA-B can have a PENTILE arrangement as shown in FIG. 2A. Figure 4 TM Alternatively, the first to third light emitting regions PXA-R, PXA-G, and PXA-B can have a stripe arrangement or a diamond arrangement.

[0083] The first to third light emitting regions PXA-R, PXA-G, and PXA-B can have various shapes in a plane. For example, the first to third light emitting regions PXA-R, PXA-G, and PXA-B can have a polygonal shape, a circular shape, or an elliptical shape, etc. Figure 4 Exemplarily, the first and third light emitting regions PXA-R and PXA-B have a quadrangular shape (or, a rhombic shape) in a plane, and the second light emitting region PXA-G has an octagonal shape.

[0084] The first to third light emitting regions PXA-R, PXA-G, and PXA-B can also have the same shape as each other in a plane, or at least a part thereof can have different shapes from each other. Figure 4 Exemplarily, the first and third light emitting regions PXA-R and PXA-B have the same shape as each other in a plane, and the second light emitting region PXA-G has a different shape from the first and third light emitting regions PXA-R and PXA-B. ​​

[0085] At least a part of the first to third light emitting areas PXA-R, PXA-G, and PXA-B can have different areas from each other in a plane. In an embodiment, the first light emitting area PXA-R emitting red light can have an area larger than that of the second light emitting area PXA-G emitting green light and smaller than that of the third light emitting area PXA-B emitting blue light. However, the size relationship of the areas between the first to third light emitting areas PXA-R, PXA-G, and PXA-B according to the color of light emitted is not limited thereto, and can be various according to the design of the display module DM (refer to Figure 2 ). In addition, the first to third light emitting areas PXA-R, PXA-G, and PXA-B can have the same area as each other in a plane, not limited thereto.

[0086] On the other hand, the shape, area, arrangement, etc. of the first to third light emitting areas PXA-R, PXA-G, and PXA-B of the display module DM (refer to Figure 2 ) according to an embodiment of the present application can be variously designed according to the color of light emitted or the size and structure of the display module DM (refer to Figure 2 ), not limited to the embodiment shown in Figure 4 .

[0087] Figure 5 is a cross-sectional view enlarged to show a part of a display area of a display panel according to an embodiment of the present application. Figure 5 The light emitting area PXA shown in Figure 5 may correspond to any one of the first to third light emitting areas PXA-R, PXA-G, and PXA-B of Figure 4 .

[0088] Referring to Figure 5 , the display panel DP (refer to Figure 2 ) can include a base layer BL, a circuit element layer DP-CL, a display element layer DP-OL, and a thin film encapsulation layer TFE.

[0089] The display panel DP can include a plurality of insulating layers and semiconductor patterns, conductive patterns, signal lines, etc. The insulating layers, semiconductor layers, and conductive layers are formed by coating, evaporation, etc. Thereafter, the insulating layers, semiconductor layers, and conductive layers can be selectively patterned by photolithography and etching. The semiconductor patterns, conductive patterns, signal lines, etc. included in the circuit element layer DP-CL and the display element layer DP-OL can be formed in this way.

[0090] A circuit element layer DP-CL can be disposed on the base layer BL. The circuit element layer DP-CL can include a buffer layer BFL, a transistor TR1, a signal transfer region SCL, first to fifth insulating layers 10, 20, 30, 40, 50, an electrode EE, and a plurality of connection electrodes CNE1, CNE2.

[0091] The buffer layer BFL can be disposed on the base layer BL. The buffer layer BFL can improve the bonding force between the base layer BL and the semiconductor pattern. The buffer layer BFL can include a silicon oxide layer and a silicon nitride layer. The silicon oxide layer and the silicon nitride layer can be alternately stacked.

[0092] The semiconductor pattern can be disposed on the buffer layer BFL. The semiconductor pattern can include polysilicon. However, the semiconductor pattern is not limited to polysilicon, and can include amorphous silicon or metal oxide. Figure 5 Only a part of the semiconductor pattern is shown, and a plurality of light emitting regions PXA-R, PXA-G, PXA-B (see FIG. 1) can also be disposed. The semiconductor pattern can be arranged in a specific pattern across the plurality of light emitting regions PXA-R, PXA-G, PXA-B (see FIG. 1). Figure 4 ) can also be disposed. The semiconductor pattern can be arranged in a specific pattern across the plurality of light emitting regions PXA-R, PXA-G, PXA-B (see FIG. 1). Figure 4 The semiconductor pattern can have different electrical properties depending on whether it is doped or not. The semiconductor pattern can include a first region having a high doping concentration and a second region having a low doping concentration. The first region can be doped with an N-type dopant or a P-type dopant. The P-type transistor can include the first region doped with the P-type dopant.

[0093] The first region has a higher conductivity than the second region, and substantially functions as an electrode or a signal line. The second region can substantially correspond to an active region (or a channel) of the transistor. In other words, a part of the semiconductor pattern can be the active region of the transistor, another part can be the source or the drain of the transistor, and yet another part can be a conductive region.

[0094] The source S, the active region A, and the drain D of the transistor TR1 can be formed from the semiconductor pattern. A part of the signal transfer region SCL formed from the semiconductor pattern is shown in FIG. 2. Figure 5 Although not separately illustrated, the signal transfer region SCL can be connected to the drain D of the transistor TR1 on the plane.

[0095] The first to fifth insulating layers 10-50 can be disposed on the buffer layer BFL. The first to fifth insulating layers 10-50 can be inorganic layers or organic layers.

[0096] A first insulating layer 10 can be provided on the buffer layer BFL. A gate G can be provided on the first insulating layer 10. A second insulating layer 20 can be provided on the first insulating layer 10 to cover the gate G. An electrode EE can be provided on the second insulating layer 20. A third insulating layer 30 can be provided on the second insulating layer 20 to cover the electrode EE.

[0097] A first connection electrode CNE1 can be provided on the third insulating layer 30. The first connection electrode CNE1 can be connected to the signal transmission region SCL through a contact hole CNT-1 penetrating the first to third insulating layers 10 to 30. A fourth insulating layer 40 can be provided on the third insulating layer 30 to cover the first connection electrode CNE1. The fourth insulating layer 40 can be an organic layer.

[0098] A second connection electrode CNE2 can be provided on the fourth insulating layer 40. The second connection electrode CNE2 can be connected to the first connection electrode CNE1 through a contact hole CNT-2 penetrating the fourth insulating layer 40. A fifth insulating layer 50 can be provided on the fourth insulating layer 40 to cover the second connection electrode CNE2. The fifth insulating layer 50 can be an organic layer.

[0099] A display element layer DP-OL can be provided on the circuit element layer DP-CL. The display element layer DP-OL can include a light emitting element ED, a sacrificial pattern SP, a pixel definition film PDL, a barrier wall PW, and a first dummy pattern DMP1.

[0100] The light emitting element ED can include an anode AE (or a first electrode), a light emitting pattern EP, and a cathode CE (or a second electrode). Each of the first to third light emitting elements described above can include substantially the same structure as the light emitting element ED of Figure 5 The description regarding the anode AE, the light emitting pattern EP, and the cathode CE can be equally applied to all of the anode, the light emitting pattern, and the cathode of each of the first to third light emitting elements.

[0101] The anode AE can be provided on the fifth insulating layer 50 of the circuit element layer DP-CL. The anode AE can be a transmissive electrode, a semi-transmissive electrode, or a reflective electrode. The anode AE can have conductivity. For example, if the anode AE can have conductivity such as metal, transparent conductive oxide (TCO), or conductive polymer material, it can be formed of various materials.

[0102] The anode AE can be connected to the second connection electrode CNE2 through a contact hole CNT-3 penetrating the fifth insulating layer 50. Accordingly, the anode AE can be electrically connected to the signal transmission region SCL through the first and second connection electrodes CNE1, CNE2, and thus electrically connected to the corresponding circuit element.

[0103] The sacrifice pattern SP can be disposed on the upper face of the anode AE. The sacrifice pattern SP can define a sacrifice opening portion OP-S that exposes a portion of the upper face of the anode AE. The sacrifice pattern SP can include an amorphous transparent conductive oxide.

[0104] The pixel defining film PDL can be disposed on the fifth insulating layer 50 of the circuit element layer DP-CL. The pixel defining film PDL can define a light emitting opening portion OP-E. The light emitting opening portion OP-E can overlap the anode AE, and the pixel defining film PDL can expose at least a portion of the anode AE through the light emitting opening portion OP-E.

[0105] Further, the light emitting opening portion OP-E can correspond to the sacrifice opening portion OP-S of the sacrifice pattern SP. According to the present embodiment, the upper face of the anode AE can be spaced apart from the pixel defining film PDL in a cross section through the sacrifice pattern SP, and thus, damage to the anode AE can be prevented in a process of forming the light emitting opening portion OP-E.

[0106] In a plan view, the area of the light emitting opening portion OP-E can be smaller than the area of the sacrifice opening portion OP-S. That is, the inner side surface of the pixel defining film PDL that defines the light emitting opening portion OP-E can be more adjacent to the center of the anode AE than the inner side surface of the sacrifice pattern SP that defines the sacrifice opening portion OP-S. However, it is not limited thereto, and the inner side surface of the sacrifice pattern SP that defines the sacrifice opening portion OP-S can also be substantially aligned with the inner side surface of the pixel defining film PDL that defines the corresponding light emitting opening portion OP-E. At this time, the light emitting area PXA can also be regarded as an area of the anode AE exposed from the corresponding sacrifice opening portion OP-S.

[0107] The pixel defining film PDL can include an inorganic insulating substance. For example, silicon nitride (SiNx x ) can be included. The pixel defining film PDL can be disposed between the anode AE and the barrier wall PW, and thus, the anode AE and the barrier wall PW can be blocked from being electrically connected to each other.

[0108] The barrier wall PW can be disposed on the pixel defining film PDL. The barrier wall PW can define a barrier wall opening portion OP-P. The barrier wall opening portion OP-P can correspond to the light emitting opening portion OP-E, and can expose at least a portion of the anode AE.

[0109] The barrier wall PW can have an undercut shape in a cross section. The barrier wall PW can include a plurality of layers that are sequentially stacked, and at least one layer of the plurality of layers can be recessed as compared to an adjacent stacked layer. Thus, the barrier wall PW can include a terminal portion TP.

[0110] In the present embodiment, the barrier wall PW can include a first barrier wall layer L1 and a second barrier wall layer L2. The first barrier wall layer L1 can be disposed on the pixel defining film PDL, and the second barrier wall layer L2 can be disposed on the first barrier wall layer L1. The first barrier wall layer L1 can have a first conductivity, and the second barrier wall layer L2 can have a second conductivity lower than the first conductivity. The thickness of the first barrier wall layer L1 can be greater than the thickness of the second barrier wall layer L2. The etch rate of the first barrier wall layer L1 can be greater than the etch rate of the second barrier wall layer L2.

[0111] In the present embodiment, the first barrier wall layer L1 can be relatively recessed with respect to the light emitting region PXA compared to the second barrier wall layer L2. That is, the first barrier wall layer L1 can be formed by undercutting the second barrier wall layer L2. The barrier wall opening portion OP-P defined in the barrier wall PW can include a first opening region A1 and a second opening region A2 arranged in order in the third direction DR3. The first barrier wall layer L1 can include a first inner side surface S1-P defining the first opening region A1 of the barrier wall opening portion OP-P, and the second barrier wall layer L2 can include a second inner side surface S2-P defining the second opening region A2 of the barrier wall opening portion OP-P.

[0112] The first inner side surface S1-P of the first barrier wall layer L1 can be relatively recessed inward with respect to the light emitting region PXA compared to the second inner side surface S2-P of the second barrier wall layer L2. A portion of the second barrier wall layer L2 protruding toward the light emitting region PXA from the first barrier wall layer L1 can define a terminal portion TP.

[0113] In Figure 5 The second inner side surface S2-P can constitute a vertical with respect to the upper surface of the pixel defining film PDL, but is not limited thereto, and the barrier wall PW can also have a tapered shape in cross-section, or can have an inverted tapered shape.

[0114] The light emitting pattern EP can be disposed on the anode AE. The light emitting pattern EP can include a light emitting layer including a light emitting material. The light emitting pattern EP can also include a hole injection layer (HIL) and a hole transport layer (HTL) disposed between the anode AE and the light emitting layer, and can also include an electron transport layer (ETL) and an electron injection layer (EIL) disposed on the light emitting layer. The light emitting pattern EP can also be referred to as an "organic layer" or an "intermediate layer".

[0115] The light-emitting pattern EP can be patterned by the end portion TP defined by the barrier wall PW. The light-emitting pattern EP can be arranged inside the sacrificial opening OP-S, the light-emitting opening OP-E, and the barrier wall opening OP-P. The light-emitting pattern EP can cover a portion of the upper surface of the pixel definition layer PDL exposed from the barrier wall opening OP-P.

[0116] The cathode CE can be disposed on the light-emitting pattern EP. The cathode CE can be patterned at the end TP defined by the barrier wall PW. The cathode CE can contact the first inner side surface S1-P of the first barrier wall layer L1. The cathode CE can be conductive. For example, the cathode CE can be formed of a variety of conductive materials, such as metal, transparent conductive oxide (TCO), or conductive polymer.

[0117] The barrier rib PW may receive a bias voltage (or a common voltage), and thus the cathode CE may be electrically connected to the barrier rib PW, thereby receiving the bias voltage (or a common voltage) from the barrier rib PW.

[0118] In addition, Figure 5 exemplarily shows that the light emitting pattern EP is not in contact with the first inner side surface S1 -P of the first barrier wall layer L1 , but the present invention is not limited thereto. The light emitting pattern EP may also be in contact with the first inner side surface S1 -P of the first barrier wall layer L1 together with the cathode CE.

[0119] According to an embodiment of the present invention, the display panel DP may further include a cover pattern CP. The cover pattern CP may be disposed in the barrier rib opening OP-P and on the cathode CE. The cover pattern CP may be patterned by forming an end portion TP of the barrier rib PW.

[0120] exist Figure 5 2 , the cover pattern CP is shown as not in contact with the first inner side surface S1 -P of the first barrier wall layer L1. However, the present invention is not limited thereto. The cover pattern CP may also be formed in contact with the first inner side surface S1 -P of the first barrier wall layer L1. On the other hand, according to another embodiment of the present invention, the cover pattern CP may be omitted.

[0121] The first dummy pattern DMP1 may be disposed on the barrier rib PW. The first dummy pattern DMP1 may include a 1-1 layer dummy pattern D11, a 2-1 layer dummy pattern D21, and a 3-1 layer dummy pattern D31. The 1-1 to 3-1 layers of dummy patterns D11, D21, and D31 may be sequentially stacked along the third direction DR3 on the upper surface of the second barrier rib layer L2 of the barrier rib PW.

[0122] The 1-1 layer dummy pattern D11 may include an organic material. For example, the 1-1 layer dummy pattern D11 may include the same material as the light emitting pattern EP. The 1-1 layer dummy pattern D11 may be formed simultaneously with the light emitting pattern EP in a single process, separated from the light emitting pattern EP by the undercut shape of the barrier wall PW.

[0123] The 2-1st layer dummy pattern D21 may include a conductive material. For example, the 2-1st layer dummy pattern D21 may include the same material as the cathode CE. The 2-1st layer dummy pattern D21 may be formed simultaneously with the cathode CE in a single process, separated from the cathode CE by the undercut shape of the barrier wall PW.

[0124] The 3-1st layer dummy pattern D31 may include the same material as the cover pattern CP. The 3-1st layer dummy pattern D31 may be formed simultaneously with the cover pattern CP through a single process, and may be separated from the cover pattern CP by the undercut shape of the barrier wall PW.

[0125] The first dummy pattern DMP1 may define a dummy opening OP-D. The dummy opening OP-D may overlap with the light-emitting opening OP-E. The dummy opening OP-D may include an area defined by the inner side surface of the 1-1 layer dummy pattern D11 (or, the 1-1 dummy area), an area defined by the inner side surface of the 2-1 layer dummy pattern D21 (or, the 2-1 dummy area), and an area defined by the inner side surface of the 3-1 layer dummy pattern D31 (or, the 3-1 dummy area). In a planar view, each of the 1-1 to 3-1 layers of dummy patterns D11, D21, and D31 may be a closed line surrounding the light-emitting area PXA.

[0126] exist Figure 5 Schematically showing that the inner side surfaces of the dummy patterns D11, D21, and D31 of the 1-1 to 3-1 layers are aligned with the second inner side surface S2-P of the second barrier wall layer L2, but not limited to this, the dummy patterns D11, D21, and D31 of the 1-1 to 3-1 layers may also cover the second inner side surface S2-P of the second barrier wall layer L2.

[0127] The thin film encapsulation layer TFE may be disposed on the display element layer DP-OL and may include a lower encapsulation inorganic pattern LIL, an encapsulation organic film OL, and an upper encapsulation inorganic film UIL.

[0128] The lower encapsulation inorganic pattern LIL may correspond to the light-emitting opening OP-E. The lower encapsulation inorganic pattern LIL may cover the light-emitting element ED and the first dummy pattern DMP1, with a portion disposed inside the barrier rib opening OP-P. According to one embodiment, the lower encapsulation inorganic pattern LIL may contact the first inner side surface S1-P of the first barrier rib layer L1.

[0129] The encapsulation organic film OL can cover the lower encapsulation inorganic pattern LIL, providing a flat upper surface. The upper encapsulation inorganic film UIL can be disposed on the encapsulation organic film OL.

[0130] It can be that the lower encapsulation inorganic pattern LIL and the upper encapsulation inorganic film UIL protect the display element layer DP-OL from moisture / oxygen, and the encapsulation organic film OL protects the display element layer DP-OL from foreign matter such as dust particles.

[0131] Figure 6 is a cross-sectional view of a display panel according to an embodiment of the present application, taken along the I-I' cross-sectional line. Figure 4 is a cross-sectional view of a display panel according to an embodiment of the present application, taken along the I-I' cross-sectional line. Figure 6 is a cross-sectional view of a display panel according to an embodiment of the present application, taken along the I-I' cross-sectional line. Figure 5 The description of a light emitting region PXA in

[0132] Referring to Figure 6 The display panel DP according to the present embodiment can include a base layer BL, a circuit element layer DP-CL, a display element layer DP-OL, and a thin film encapsulation layer TFE. The display element layer DP-OL can include light emitting elements ED1, ED2, ED3, sacrificial patterns SP1, SP2, SP3, a pixel definition film PDL, a barrier wall PW, and a first dummy pattern DMP1.

[0133] The light emitting elements ED1, ED2, ED3 can include a first light emitting element ED1, a second light emitting element ED2, and a third light emitting element ED3. The first light emitting element ED1 can include a first anode AE1, a first light emitting pattern EP1, and a first cathode CE1. The second light emitting element ED2 can include a second anode AE2, a second light emitting pattern EP2, and a second cathode CE2. The third light emitting element ED3 can include a third anode AE3, a third light emitting pattern EP3, and a third cathode CE3. The first to third anodes AE1, AE2, AE3 can be provided by a plurality of patterns. In an embodiment, it can be that the first light emitting pattern EP1 provides red light, the second light emitting pattern EP2 provides green light, and the third light emitting pattern EP3 provides blue light.

[0134] The pixel definition film PDL can define the first to third light emission opening portions OP1-E, OP2-E, OP3-E. The first light emission opening portion OP1-E can expose at least a portion of the first anode AE1. The first light emission region PXA-R can be defined as a region in the upper face of the first anode AE1 exposed through the first light emission opening portion OP1-E. The second light emission opening portion OP2-E can expose at least a portion of the second anode AE2. The second light emission region PXA-G can be defined as a region in the upper face of the second anode AE2 exposed through the second light emission opening portion OP2-E. The third light emission opening portion OP3-E can expose at least a portion of the third anode AE3. The third light emission region PXA-B can be defined as a region in the upper face of the third anode AE3 exposed through the third light emission opening portion OP3-E.

[0135] The sacrificial patterns SP1, SP2, SP3 can include a first sacrificial pattern SP1, a second sacrificial pattern SP2, and a third sacrificial pattern SP3. The first to third sacrificial patterns SP1, SP2, SP3 can be respectively disposed on the upper faces of the first to third anodes AE1, AE2, AE3. The first to third sacrificial patterns SP1, SP2, SP3 can define first to third sacrificial opening portions OP1-S, OP2-S, OP3-S respectively corresponding to the first to third light emission opening portions OP1-E, OP2-E, OP3-E.

[0136] In the present embodiment, the barrier wall PW can define first to third barrier wall opening portions OP1-P, OP2-P, OP3-P respectively corresponding to the first to third light emission opening portions OP1-E, OP2-E, OP3-E.

[0137] Each of the first to third barrier wall opening portions OP1-P, OP2-P, OP3-P can include the first opening region A1 (refer to Figure 5 ) and the second opening region A2 (refer to Figure 5 ) described above in the Figure 5 ). The first barrier wall layer L1 can include a first inner side surface S1-P (refer to Figure 5 ) of the first opening region A1 (refer to Figure 5 ) defining the first to third barrier wall opening portions OP1-P, OP2-P, OP3-P respectively. The second barrier wall layer L2 can include a second inner side surface S2-P (refer to Figure 5 ) of the second opening region A2 (refer to Figure 5 ) defining the first to third barrier wall opening portions OP1-P, OP2-P, OP3-P respectively.

[0138] The first to third light emitting patterns EP1, EP2, EP3 and the first to third cathodes CE1, CE2, CE3 can be formed in the first to third barrier wall opening parts OP1-P, OP2-P, OP3-P, respectively. The first to third cathodes CE1, CE2, CE3 can be formed in the first to third barrier wall opening parts OP1-P, OP2-P, OP3-P by physically separating the second barrier wall layer L2 forming the end part TP (refer to FIG. 2B) and electrically connected to each other by contacting the first barrier wall layer L1 to receive the provision of the common voltage. The first barrier wall layer L1 contacted by each of the first to third cathodes CE1, CE2, CE3 can reduce the contact resistance with the first to third cathodes CE1, CE2, CE3 by having a relatively high electrical conductivity compared to the second barrier wall layer L2. Thereby, the common cathode voltage can be uniformly provided to the light emitting areas PXA-R, PXA-G, PXA-B.

[0139] In the present embodiment, the first to third cathodes CE1, CE2, CE3 can be formed in the first to third barrier wall opening parts OP1-P, OP2-P, OP3-P by physically separating the second barrier wall layer L2 forming the end part TP (refer to Figure 1b ) and electrically connected to each other by contacting the first barrier wall layer L1 to receive the provision of the common voltage. The first barrier wall layer L1 contacted by each of the first to third cathodes CE1, CE2, CE3 can reduce the contact resistance with the first to third cathodes CE1, CE2, CE3 by having a relatively high electrical conductivity compared to the second barrier wall layer L2. Thereby, the common cathode voltage can be uniformly provided to the light emitting areas PXA-R, PXA-G, PXA-B.

[0140] According to the present application, the plurality of light emitting patterns EP1, EP2, EP3 can be evaporated by being patterned in pixel units defined at the end part of the barrier wall PW. That is, the plurality of light emitting patterns EP1, EP2, EP3 can be commonly formed using an open mask, but easily divided in pixel units by the barrier wall PW.

[0141] On the contrary, when the plurality of light emitting patterns EP1, EP2, EP3 are patterned using a fine metal mask (Fine Metal Mask), a support spacer protruding from the conductive barrier wall should be provided in order to support the fine metal mask. In addition, as the fine metal mask is spaced apart from the substrate surface by the height of the barrier wall and the spacer, there can be a limitation to the implementation of high resolution. In addition, as the fine metal mask contacts the spacer, foreign matter can remain on the spacer after the patterning process of the plurality of light emitting patterns EP1, EP2, EP3, or the spacer can be damaged by the imprint of the fine metal mask. Thereby, a defective display panel can be formed.

[0142] According to the present embodiment, by including the barrier wall PW, physical separation between the light emitting elements ED1, ED2, ED3 can be easily implemented. Thereby, current leakage or driving errors between adjacent light emitting areas PXA-R, PXA-G, PXA-B, etc. can be prevented, and each of the light emitting elements ED1, ED2, ED3 can be independently driven.

[0143] In particular, by patterning the plurality of light emitting patterns EP1, EP2, EP3 with a mask not in contact with the internal structure within the display area DA (refer to Figure 7 ), the defect rate can be reduced to provide a display panel DP with improved process reliability. As the patterning can be performed even without providing a separate support spacer protruding from the barrier wall PW, the area of the light emitting area PXA-R, PXA-G, PXA-B can be miniaturized, thereby a display panel DP with high resolution can be easily implemented.

[0144] In addition, in manufacturing a large area display panel DP, the process cost can be reduced by omitting the large area mask fabrication, and the display panel DP with improved process reliability can be provided without being affected by defects that can occur in a large area mask.

[0145] The cover patterns CP1, CP2, CP3 can include a first cover pattern CP1, a second cover pattern CP2, and a third cover pattern CP3. The first to third cover patterns CP1, CP2, CP3 can be respectively disposed on the first to third cathodes CE1, CE2, CE3, and respectively disposed within the first to third barrier wall opening portions OP1-P, OP2-P, OP3-P.

[0146] The first dummy pattern DMP1 can include a 1-1st dummy pattern DMP11, a 1-2nd dummy pattern DMP12, and a 1-3rd dummy pattern DMP13. Each of the 1-1st dummy pattern DMP11, the 1-2nd dummy pattern DMP12, and the 1-3rd dummy pattern DMP13 can include a 1-1st layer dummy pattern D11a, D11b, D11c, a 2-1st layer dummy pattern D21a, D21b, D21c, and a 3-1st layer dummy pattern D31a, D31b, D31c.

[0147] The 1-1st dummy pattern DMP11 can include the 1-1st to 3-1st layer dummy patterns D11a, D21a, D31a surrounding the first light emitting area PXA-R on a plane. The 1-1st layer dummy pattern D11a of the 1-1st dummy pattern DMP11 can contain the same substance as the first light emitting pattern EP1 and be formed by the same process as the first light emitting pattern EP1. The 2-1st layer dummy pattern D21a of the 1-1st dummy pattern DMP11 can contain the same substance as the first cathode CE1 and be formed by the same process as the first cathode CE1. The 3-1st layer dummy pattern D31a of the 1-1st dummy pattern DMP11 can contain the same substance as the first cover pattern CP1 and be formed by the same process as the first cover pattern CP1.

[0148] The first-2 dummy pattern DMP12 can include the first-1 layer to the third-1 layer dummy patterns D11b, D21b, D31b surrounding the second light emitting area PXA-G in a plan view. The first-1 layer dummy pattern D11b of the first-2 dummy pattern DMP12 can include the same substance as the second light emitting pattern EP2 and be formed by the same process as the second light emitting pattern EP2. The second-1 layer dummy pattern D21b of the first-2 dummy pattern DMP12 can include the same substance as the second cathode CE2 and be formed by the same process as the second cathode CE2. The third-1 layer dummy pattern D31b of the first-2 dummy pattern DMP12 can include the same substance as the second cover pattern CP2 and be formed by the same process as the second cover pattern CP2.

[0149] The first-3 dummy pattern DMP13 can include the first-1 layer to the third-1 layer dummy patterns D11c, D21c, D31c surrounding the third light emitting area PXA-B in a plan view. The first-1 layer dummy pattern D11c of the first-3 dummy pattern DMP13 can include the same substance as the third light emitting pattern EP3 and be formed by the same process as the third light emitting pattern EP3. The second-1 layer dummy pattern D21c of the first-3 dummy pattern DMP13 can include the same substance as the third cathode CE3 and be formed by the same process as the third cathode CE3. The third-1 layer dummy pattern D31c of the first-3 dummy pattern DMP13 can include the same substance as the third cover pattern CP3 and be formed by the same process as the third cover pattern CP3.

[0150] The first dummy pattern DMP1 can define first to third dummy opening portions OP1-D, OP2-D, OP3-D overlapping the first to third light emitting opening portions OP1-E, OP2-E, OP3-E, respectively. The first dummy opening portion OP1-D can be defined by inner side surfaces of the first-1 layer to the third-1 layer dummy patterns D11a, D21a, D31a of the first-1 dummy pattern DMP11, the second dummy opening portion OP2-D can be defined by inner side surfaces of the first-1 layer to the third-1 layer dummy patterns D11b, D21b, D31b of the first-2 dummy pattern DMP12, and the third dummy opening portion OP3-D can be defined by inner side surfaces of the first-1 layer to the third-1 layer dummy patterns D11c, D21c, D31c of the first-3 dummy pattern DMP13.

[0151] The thin film encapsulation layer TFE can include lower encapsulation inorganic patterns LIL1, LIL2, LIL3, an encapsulation organic film OL, and an upper encapsulation inorganic film UIL. In the present embodiment, the lower encapsulation inorganic patterns LIL1, LIL2, LIL3 can include a first lower encapsulation inorganic pattern LIL1, a second lower encapsulation inorganic pattern LIL2, and a third lower encapsulation inorganic pattern LIL3. The first to third lower encapsulation inorganic patterns LIL1, LIL2, LIL3 can correspond to the first to third light emitting opening portions OP1-E, OP2-E, OP3-E, respectively.

[0152] The first lower encapsulation inorganic pattern LIL1 can cover the first light emitting element ED1 and the 1-1 dummy pattern DMP11, and a part thereof is disposed inside the first barrier wall opening portion OP1-P. The second lower encapsulation inorganic pattern LIL2 can cover the second light emitting element ED2 and the 1-2 dummy pattern DMP12, and a part thereof is disposed inside the second barrier wall opening portion OP2-P. The third lower encapsulation inorganic pattern LIL3 can cover the third light emitting element ED3 and the 1-3 dummy pattern DMP13, and a part thereof is disposed inside the third barrier wall opening portion OP3-P. The first to third lower encapsulation inorganic patterns LIL1, LIL2, LIL3 can be provided in a pattern form spaced apart from each other.

[0153] Figure 8 is a plan view that enlarges a partial area of a display panel according to an embodiment of the present application. Figure 9 is a cross-sectional view that enlarges a part of a display area and a non-display area of a display panel according to an embodiment of the present application. Figure 7 to Figure 9 is a cross-sectional view that enlarges a part of a first non-display area of a display panel according to an embodiment of the present application.

[0154] Referring to Figure 8 , the display panel DP can include a display area DA and a non-display area NDA. According to the present embodiment, the non-display area NDA can include a first non-display area NDAa and a second non-display area NDAb. It can be that the first non-display area NDAa is adjacent to the display area DA, and the second non-display area NDAb is spaced apart from the display area DA by the first non-display area NDAa. The first non-display area NDAa can be located between the display area DA and the second non-display area NDAb. The first non-display area NDAa can be referred to as an evaporation area or an anchor area. The second non-display area NDAb can be referred to as a turn-on area.

[0155] The first non-display area NDAa can be an area in which a substance included in the emission pattern EP is evaporated in a process of forming the emission pattern EP, among the non-display areas NDA. The substance included in the emission pattern EP can be evaporated in the display area DA as well as the first non-display area NDAa during the process of forming the emission pattern EP. An anchor can be disposed within the first non-display area NDAa. The anchor can be provided in various forms, and detailed descriptions regarding the anchor will be described later.

[0156] The second non-display area NDAb can be a remaining area other than the first non-display area NDAa, among the non-display areas NDA. During the process of forming the emission pattern EP, the substance included in the emission pattern EP can not be evaporated in the second non-display area NDAb.

[0157] The barrier wall PW can also overlap the non-display area NDA. The barrier wall PW can extend from the display area DA to a portion of the non-display area NDA in which the driving voltage line VL is disposed. The driving voltage line VL can receive a bias voltage (or, a common voltage).

[0158] The barrier wall PW can include an inner portion INP and an outer portion OTP. The inner portion INP can be disposed within the display area DA, and the outer portion OTP can be disposed within the second non-display area NDAb. In the present embodiment, the barrier wall PW can further include an anchor portion ACP. The anchor portion ACP can be disposed within the first non-display area NDAa. The anchor portion ACP can be located between the inner portion INP and the outer portion OTP. The inner portion INP, the anchor portion ACP, and the outer portion OTP can constitute an integrated shape. The anchor can be provided from the anchor portion ACP of the barrier wall PW.

[0159] On the other hand, the barrier wall PW can not include the anchor portion ACP, and the anchor can be provided by a separate structure. In this case, the barrier wall PW can further include a connection portion that is disposed within the first non-display area NDAa and provided separately from the anchor. The inner portion INP, the connection portion, and the outer portion OTP can constitute an integrated shape, and the connection portion can connect the inner portion INP and the outer portion OTP.

[0160] The outer portion OTP of the barrier wall PW can be connected to the driving voltage line VL within the second non-display area NDAb. The pixel definition layer PDL can not be disposed in at least a portion of the second non-display area NDAb. By this, at least a portion of the driving voltage line VL can be exposed from the pixel definition layer PDL and connected to the barrier wall PW. The barrier wall PW can receive a bias voltage (or, a common voltage) through the driving voltage line VL.

[0161] In the present embodiment, the barrier wall PW can be disposed in the display area DA as well as the non-display area NDA. The barrier wall PW can be disposed in the display area DA as well as the non-display area NDA. The barrier wall PW can be disposed in the display area DA as well as the non-display area NDA. The barrier wall PW can be disposed in the display area DA as well as the non-display area NDA. Figure 7The figure exemplifies that the driving voltage line VL is disposed on the fifth insulating layer 50, and the barrier wall PW is directly connected to the driving voltage line VL, but the present invention is not limited thereto. In another embodiment of the present invention, the auxiliary electrode may be disposed on the fifth insulating layer 50, and the driving voltage line VL may be disposed on any of the first to fourth insulating layers 10-40 and connected to the auxiliary electrode through a contact hole. In this case, the barrier wall PW may be connected to the auxiliary electrode, thereby electrically connecting the auxiliary electrode to the driving voltage line VL.

[0162] A barrier rib opening OP-P may be defined in the inner portion INP of the barrier rib PW.

[0163] The outer portion OTP of the barrier wall PW may define an outer opening portion OP-OT. Figure 7 exemplarily shown in FIG. 1 , the outer opening portion OP-OT has a square shape in a plane, but the shape of the outer opening portion OP-OT in a plane is not limited to any one embodiment.

[0164] The anode AE ​​may not be disposed in the non-display area NDA. The pixel defining layer PDL may not define an opening for exposing at least a portion of the anode AE ​​in the first non-display area NDAa.

[0165] The anchor portion ACP of the barrier wall PW may define an anchor opening OP-AC. The anchor opening OP-AC may not overlap with the anode AE. A portion of the upper surface of the pixel defining layer PDL may be exposed from the anchor portion ACP of the barrier wall PW through the anchor opening OP-AC.

[0166] In one embodiment, if Figure 7 As shown, the anchor openings OP-AC may be arranged spaced apart from each other. For example, the anchor openings OP-AC may be arranged in a matrix (or grid) form. Figure 8 exemplarily illustrated in FIG. 5 that each of the anchor opening portions OP-AC has a square shape in plane, but the shape of the anchor opening portions OP-AC in plane is not limited to any one embodiment.

[0167] like Figure 9 as well as Figure 5 As shown, the anchor portion ACP may have an undercut shape in cross section. The barrier wall PW may include a plurality of layers stacked sequentially, and at least one of the plurality of layers within the anchor portion ACP may be recessed relative to adjacent stacked layers. Thus, the anchor portion ACP may include an end portion TPa.

[0168] In an embodiment, the anchor opening portion OP-AC can be formed by the same process as the barrier wall opening portion OP-P. An etch rate of the first barrier wall layer L1 can be greater than an etch rate of the second barrier wall layer L2. Thus, the first barrier wall layer L1 can have a relatively recessed shape compared to the second barrier wall layer L2 within the anchor portion ACP. That is, the first barrier wall layer L1 can be undercut to form the second barrier wall layer L2 within the anchor portion ACP. The anchor opening portion OP-AC defined by the barrier wall PW can include a third opening region A3 and a fourth opening region A4 arranged in order in the third direction DR3. The first barrier wall layer L1 can include a third inner side surface S3-P defining the third opening region A3 of the anchor opening portion OP-AC, and the second barrier wall layer L2 can include a fourth inner side surface S4-P defining the fourth opening region A4 of the anchor opening portion OP-AC. The third inner side surface S3-P of the first barrier wall layer L1 can be relatively recessed inward (or in a direction toward the inside of the anchor portion ACP) compared to the fourth inner side surface S4-P of the second barrier wall layer L2. A portion of the second barrier wall layer L2 protruding from the first barrier wall layer L1 within the anchor portion ACP can define a terminal portion TPa.

[0169] The display panel DP can further include a second dummy pattern DMP2 and a third dummy pattern DMP3. The second dummy pattern DMP2 and the third dummy pattern DMP3 can be disposed within the first non-display area NDAa.

[0170] In the present embodiment, the second dummy pattern DMP2 can be provided as a plurality, such that the plurality of second dummy patterns DMP2 are disposed apart from each other. The second dummy pattern DMP2 can be disposed within the anchor opening portion OP-AC, respectively. The second dummy pattern DMP2 can be disposed directly on the pixel definition layer PDL. The third dummy pattern DMP3 can be disposed on the anchor portion ACP. That is, the third dummy pattern DMP3 can be disposed on a portion of the barrier wall PW disposed within the first non-display area NDAa. In an embodiment of the present disclosure, the third dummy pattern DMP3 can have an integral shape with the first dummy pattern DMP1 within the display area DA.

[0171] Each of the second dummy patterns DMP2 can include first to third second dummy patterns D12, D22, D32. The first to third second dummy patterns D12, D22, D32 can be sequentially stacked on the upper surface of the pixel definition layer PDL along the third direction DR3. Each of the third dummy patterns DMP3 can include first to third third dummy patterns D13, D23, D33. The first to third third dummy patterns D13, D23, D33 can be sequentially stacked on the upper surface of the barrier wall PW along the third direction DR3.

[0172] Each of the first-2 layer dummy pattern D12 and the first-3 layer dummy pattern D13 can include an organic substance. For example, each of the first-2 layer dummy pattern D12 and the first-3 layer dummy pattern D13 can include the same substance as the emission pattern EP. The first-2 layer dummy pattern D12 and the first-3 layer dummy pattern D13 can be formed simultaneously with the emission pattern EP through one process and separated from each other by the undercut shape of the anchor portion ACP.

[0173] Each of the second-2 layer dummy pattern D22 and the second-3 layer dummy pattern D23 can include a conductive substance. For example, each of the second-2 layer dummy pattern D22 and the second-3 layer dummy pattern D23 can include the same substance as the cathode CE. The second-2 layer dummy pattern D22 and the second-3 layer dummy pattern D23 can be formed simultaneously with the cathode CE through one process and separated from each other by the undercut shape of the anchor portion ACP.

[0174] Each of the third-2 layer dummy pattern D32 and the third-3 layer dummy pattern D33 can include the same substance as the cover pattern CP (refer to Figure 9 ). The third-2 layer dummy pattern D32 and the third-3 layer dummy pattern D33 can be formed simultaneously with the cover pattern CP through one process and separated from each other by the undercut shape of the anchor portion ACP.

[0175] The inner side surfaces of the first-3 layer to third-3 layer dummy patterns D13, D23, D33 are exemplarily shown in alignment with the fourth inner side surface S4-P of the second barrier rib layer L2 in Figure 8 , but are not limited thereto, and the first-3 layer to third-3 layer dummy patterns D13, D23, D33 can also cover the fourth inner side surface S4-P of the second barrier rib layer L2.

[0176] The display panel DP can further include an outer lower encapsulation inorganic pattern LIL_OT. The outer lower encapsulation inorganic pattern LIL_OT can be disposed within the first non-display area NDAa and the second non-display area NDAb. The outer lower encapsulation inorganic pattern LIL_OT can be disposed on the anchor portion ACP, the second dummy pattern DMP2, and the third dummy pattern DMP3 within the first non-display area NDAa. The outer lower encapsulation inorganic pattern LIL_OT can cover the second dummy pattern DMP2 and the third dummy pattern DMP3 within the first non-display area NDAa and be disposed on the inner side of the anchor opening portion OP-AC. As Figure 10As shown, the outer lower encapsulation inorganic pattern LIL_OT can overlap the plurality of anchor opening portions OP-AC. The outer lower encapsulation inorganic pattern LIL_OT can contact the third inner side surface S3-P and the fourth inner side surface S4-P of the barrier wall PW inside the anchor opening portion OP-AC. The outer lower encapsulation inorganic pattern LIL_OT can contact the lower surface of the second barrier wall layer L2 exposed from the first barrier wall layer L1 inside the anchor opening portion OP-AC.

[0177] The outer lower encapsulation inorganic pattern LIL_OT can cover the outer portion OTP inside the second non-display area NDAb. A portion of the outer lower encapsulation inorganic pattern LIL_OT can be disposed inside the outer opening portion OP-OT. The outer lower encapsulation inorganic pattern LIL_OT can contact the inner side surface of the barrier wall PW inside the outer opening portion OP-OT.

[0178] In an embodiment, the outer lower encapsulation inorganic pattern LIL_OT can have an integral shape with the lower encapsulation inorganic pattern LIL adjacent to the first non-display area NDAa. However, not limited thereto, the outer lower encapsulation inorganic pattern LIL_OT can be spaced apart from the lower encapsulation inorganic pattern LIL.

[0179] According to the present embodiment, the anchor can be disposed inside the first non-display area NDAa, and the anchor can be provided in a protruding pattern. By this, the third dummy pattern DMP3 formed in the first non-display area NDAa can be disposed on the anchor through a process of forming the light emitting pattern EP. In addition, the outer lower encapsulation inorganic pattern LIL_OT can be fixed through the anchor by covering the anchor provided in the protruding pattern. In an embodiment, the outer lower encapsulation inorganic pattern LIL_OT can be more stably fixed by the anchor having an undercut shape in a cross section. By this, the third dummy pattern DMP3 can also be stably covered by the outer lower encapsulation inorganic pattern LIL_OT, and even if the third dummy pattern DMP3 has a low adhesion with the anchor, a warping phenomenon of the third dummy pattern DMP3 can be prevented.

[0180] In addition, according to the present embodiment, the anchor can be provided from the barrier wall PW. In addition, it can be that the undercut shape of the anchor is provided through the anchor opening portion OP-AC of the barrier wall PW, and the anchor opening portion OP-AC is formed through the same process as a process of forming the barrier wall opening portion OP-P. Accordingly, the anchor according to the present embodiment can be provided without an additional process.

[0181] Figure 11 is a plan view enlarging a portion of a display panel according to an embodiment of the present application. Figure 10 is a cross-sectional view enlarging a portion of a first non-display area of a display panel according to an embodiment of the present application.

[0182] Referring toFigure 11 and Figure 10 According to the present embodiment, the display panel DP can further include a plurality of anchor patterns ACPT spaced apart from the barrier wall PW. The anchor patterns ACPT can be spaced apart from each other. The anchors can be provided by the plurality of anchor patterns ACPT. For example, as shown in FIG. 1A, the anchor patterns ACPT can be arranged in a matrix (or, lattice) form. In an embodiment, each of the anchor patterns ACPT can have a square shape in a plan view. However, the shape of each of the anchor patterns ACPT in the plan view is not limited to any embodiment. Figure 10 As shown in FIG. 1A, each of the anchor patterns ACPT can have an undercut shape in a cross-section. Each of the anchor patterns ACPT can include a plurality of layers stacked in sequence, and at least one layer of the plurality of layers can be recessed as compared to an adjacent stacked layer. Thereby, each of the anchor patterns ACPT can include an end portion TPb. Figure 11 As shown in FIG. 1A, each of the anchor patterns ACPT can have an undercut shape in a cross-section. Each of the anchor patterns ACPT can include a plurality of layers stacked in sequence, and at least one layer of the plurality of layers can be recessed as compared to an adjacent stacked layer. Thereby, each of the anchor patterns ACPT can include an end portion TPb.

[0183] As shown in FIG. 1A, each of the anchor patterns ACPT can have an undercut shape in a cross-section. Each of the anchor patterns ACPT can include a plurality of layers stacked in sequence, and at least one layer of the plurality of layers can be recessed as compared to an adjacent stacked layer. Thereby, each of the anchor patterns ACPT can include an end portion TPb. Figure 5 As shown in FIG. 1A, each of the anchor patterns ACPT can have an undercut shape in a cross-section. Each of the anchor patterns ACPT can include a plurality of layers stacked in sequence, and at least one layer of the plurality of layers can be recessed as compared to an adjacent stacked layer. Thereby, each of the anchor patterns ACPT can include an end portion TPb. As shown in FIG. 1A, each of the anchor patterns ACPT can have an undercut shape in a cross-section. Each of the anchor patterns ACPT can include a plurality of layers stacked in sequence, and at least one layer of the plurality of layers can be recessed as compared to an adjacent stacked layer. Thereby, each of the anchor patterns ACPT can include an end portion TPb.

[0184] As shown in FIG. 1A, each of the anchor patterns ACPT can have an undercut shape in a cross-section. Each of the anchor patterns ACPT can include a plurality of layers stacked in sequence, and at least one layer of the plurality of layers can be recessed as compared to an adjacent stacked layer. Thereby, each of the anchor patterns ACPT can include an end portion TPb. Figure 5 As shown in FIG. 1A, each of the anchor patterns ACPT can have an undercut shape in a cross-section. Each of the anchor patterns ACPT can include a plurality of layers stacked in sequence, and at least one layer of the plurality of layers can be recessed as compared to an adjacent stacked layer. Thereby, each of the anchor patterns ACPT can include an end portion TPb. Figure 5 As shown in FIG. 1A, each of the anchor patterns ACPT can have an undercut shape in a cross-section. Each of the anchor patterns ACPT can include a plurality of layers stacked in sequence, and at least one layer of the plurality of layers can be recessed as compared to an adjacent stacked layer. Thereby, each of the anchor patterns ACPT can include an end portion TPb. Figure 5 As shown in FIG. 1A, each of the anchor patterns ACPT can have an undercut shape in a cross-section. Each of the anchor patterns ACPT can include a plurality of layers stacked in sequence, and at least one layer of the plurality of layers can be recessed as compared to an adjacent stacked layer. Thereby, each of the anchor patterns ACPT can include an end portion TPb. Figure 5 As shown in FIG. 1A, each of the anchor patterns ACPT can have an undercut shape in a cross-section. Each of the anchor patterns ACPT can include a plurality of layers stacked in sequence, and at least one layer of the plurality of layers can be recessed as compared to an adjacent stacked layer. Thereby, each of the anchor patterns ACPT can include an end portion TPb. Figure 12a As shown in FIG. 1A, each of the anchor patterns ACPT can have an undercut shape in a cross-section. Each of the anchor patterns ACPT can include a plurality of layers stacked in sequence, and at least one layer of the plurality of layers can be recessed as compared to an adjacent stacked layer. Thereby, each of the anchor patterns ACPT can include an end portion TPb. As shown in FIG. 1A, each of the anchor patterns ACPT can have an undercut shape in a cross-section. Each of the anchor patterns ACPT can include a plurality of layers stacked in sequence, and at least one layer of the plurality of layers can be recessed as compared to an adjacent stacked layer. Thereby, each of the anchor patterns ACPT can include an end portion TPb.

[0185] Each of the anchor patterns ACPT can include a first outer side surface S1-A of the first anchor layer L1_A and a second outer side surface S2-A of the second anchor layer L2_A, the first outer side surface S1-A being recessed relatively inwardly than the second outer side surface S2-A. In addition, the second outer side surface S2-A of the second anchor layer L2_A of each of the anchor patterns ACPT can be protruded than the first outer side surface S1-A of the first anchor layer L1_A. The first outer side surface S1-A can be undercut to form the second outer side surface S2-A.

[0186] The second dummy pattern DMP2 can be disposed on the upper surface of the pixel defining film PDL exposed from the anchor pattern ACPT. The third dummy pattern DMP3 can be provided as a plurality, such that the plurality of third dummy patterns DMP3 are respectively disposed on the anchor patterns ACPT.

[0187] The outer lower encapsulation inorganic pattern LIL_OT can be disposed on the anchor pattern ACPT, the second dummy pattern DMP2, and the third dummy pattern DMP3. The outer lower encapsulation inorganic pattern LIL_OT can cover the second dummy pattern DMP2 and the third dummy pattern DMP3. The outer lower encapsulation inorganic pattern LIL_OT can be in contact with the first outer side surface S1-A and the second outer side surface S2-A of each of the anchor patterns ACPT. The outer lower encapsulation inorganic pattern LIL_OT can be in contact with the lower surface of the second anchor layer L2_A exposed from the first anchor layer L1_A of each of the anchor patterns ACPT.

[0188] According to the present embodiment, the anchor can be disposed in the first non-display area NDAa, and the anchor can be provided in a protruding pattern. By this, the third dummy pattern DMP3 formed in the first non-display area NDAa can be disposed on the anchor through a process of forming the light emitting pattern EP. In addition, the outer lower encapsulation inorganic pattern LIL_OT can be fixed through the anchor by covering the anchor provided in the protruding pattern. In an embodiment, the outer lower encapsulation inorganic pattern LIL_OT can be more stably fixed by the anchor having an undercut shape in a cross-section. By this, the third dummy pattern DMP3 can also be stably covered by the outer lower encapsulation inorganic pattern LIL_OT, and even if the third dummy pattern DMP3 has a low adhesion with the anchor, a warping phenomenon of the third dummy pattern DMP3 can be prevented.

[0189] In addition, according to the present embodiment, the anchor can be provided by the anchor pattern ACPT formed through the same process as the barrier wall PW, and the undercut shape of the anchor pattern ACPT can be formed through the same process as a process of forming the barrier wall opening part OP-P in the barrier wall PW. Accordingly, the anchor according to the present embodiment can be provided without an additional process.

[0190] Figure 12b and Figure 12ais a plan view that enlarges a part of a region of a display panel according to an embodiment of the present application.

[0191] Referring to Figure 12b In the present embodiment, it can be that the barrier wall PW includes the inner side portion INP, the anchor portion ACP, and the outer side portion OTP, the anchor being provided from the anchor portion ACP of the barrier wall PW. The anchor portion ACP can define anchor opening portions OP-AC. Each of the anchor opening portions OP-AC can have a linear shape in a plan. For example, each of the anchor opening portions OP-AC can extend along the same direction as a direction in which the first non-display region NDAa extends. In other words, each of the anchor opening portions OP-AC can extend along a direction perpendicular to a direction from the display region DA toward the second non-display region NDAb.

[0192] Referring to Figure 13 It can be that the display panel DP according to the present embodiment includes anchor patterns ACPT that are spaced apart from each other, the anchor being provided by the anchor patterns ACPT. The anchor patterns ACPT can be structures that are spaced apart from the barrier wall PW. Each of the anchor patterns ACPT can have a linear shape in a plan. For example, each of the anchor patterns ACPT can extend along the same direction as a direction in which the first non-display region NDAa extends. In other words, each of the anchor patterns ACPT can extend along a direction perpendicular to a direction from the display region DA toward the second non-display region NDAb.

[0193] Figure 13 is a plan view that enlarges a part of a region of a display panel according to an embodiment of the present application.

[0194] Referring to Figure 13 In the present embodiment, it can be that the barrier wall PW includes the inner side portion INP, the anchor portion ACP, and the outer side portion OTP, the anchor being provided from the anchor portion ACP of the barrier wall PW. The anchor portion ACP can have a mesh shape in a plan. The mesh shape of the anchor portion ACP can be a mesh shape including first mesh lines MSL1 extending along the fourth direction DR4 and second mesh lines MSL2 extending along the fifth direction DR5. The fifth direction DR5 can be defined as a direction that intersects each of the first direction DR1, the second direction DR2, and the fourth direction DR4 in a plan defined by the first direction DR1 and the second direction DR2. The anchor portion ACP can define anchor opening portions OP-AC, each of the anchor opening portions OP-AC can have a lozenge shape in a plan.

[0195] In addition, in Figure 10 another embodiment according to the present application, the anchor can also be provided by anchor patterns ACPT (refer to Figure 10 ) that are spaced apart from the barrier wall PW, the anchor being provided by the anchor patterns ACPT (refer to Figure 14a) can also have a grid shape.

[0196] Figure 14b and Figure 14a is a plan view that enlarges a part of the display panel according to an embodiment.

[0197] Referring to Figure 14b In the present embodiment, it can be that the barrier wall PW includes an inner portion INP, an anchor portion ACP, and an outer portion OTP, the anchor being provided from the anchor portion ACP of the barrier wall PW. The anchor portion ACP can define an anchor opening portion OP-AC. Each of the anchor opening portions OP-AC can have a zigzag shape in a plan. For example, the zigzag shape of each of the anchor opening portions OP-AC can be a shape including a portion extending in the first direction DR1 and a portion extending in the second direction DR2. However, the extending directions of the portions within the zigzag shape are not limited to any of the embodiments.

[0198] Referring to Figure 15 It can be that the display panel DP according to the present embodiment includes anchor patterns ACPT spaced apart from each other, the anchor being provided by the anchor patterns ACPT. The anchor patterns ACPT can be a structure spaced apart from the barrier wall PW. Each of the anchor patterns ACPT can have a zigzag shape in a plan. For example, the zigzag shape of each of the anchor patterns ACPT can be a shape including a portion extending in the first direction DR1 and a portion extending in the second direction DR2. However, the extending directions of the portions within the zigzag shape are not limited to any of the embodiments.

[0199] Figure 15 is a plan view of a display panel according to an embodiment of the present invention.

[0200] Referring to Figure 16 According to the present embodiment, the display area DA-1 can have a quadrangular shape in a plan, all of the corners where two sides intersect having a shape of a circle (or, a shape having a predetermined curvature). Thereby, the display area DA-1 can include first to fourth straight lines SL1, SL2, SL3, SL4 and first to fourth curved lines CL1, CL2, CL3, CL4 in a plan. The first and second straight lines SL1, SL2 can be spaced apart from each other in the first direction DR1, each extending along the second direction DR2. The third and fourth straight lines SL3, SL4 can be spaced apart from each other in the second direction DR2, each extending along the first direction DR1. It can be that the first curved line CL1 is disposed between the first and third straight lines SL1, SL3, and the second curved line CL2 is disposed between the second and third straight lines SL2, SL3. It can be that the third curved line CL3 is disposed between the second and fourth straight lines SL2, SL4, and the fourth curved line CL4 is disposed between the first and fourth straight lines SL1, SL4.

[0201] The non-display area NDA-1 according to the present embodiment can extend along the outer sides of the display area DA-1. The first non-display area NDAa-1 can include the 1st-1 to 4th-1 straight areas SA11, SA21, SA31, SA41 and the 1st-1 to 4th-1 curved areas CA11, CA21, CA31, CA41. The 1st-1 and 2nd-1 straight areas SA11, SA21 can extend along the first and second straight sides SL1, SL2 of the display area DA-1, respectively, extending along the second direction DR2. The 3rd-1 and 4th-1 straight areas SA31, SA41 can extend along the third and fourth straight sides SL3, SL4 of the display area DA-1, respectively, extending along the first direction DR1. The 1st-1 to 4th-1 curved areas CA11, CA21, CA31, CA41 can extend along the first to fourth curved sides CL1, CL2, CL3, CL4 of the display area DA-1, respectively.

[0202] The second non-display area NDAb-1 can include the 1st-2 to 4th-2 straight areas SA12, SA22, SA32, SA42 and the 1st-2 to 4th-2 curved areas CA12, CA22, CA32, CA42. The 1st-2 and 2nd-2 straight areas SA12, SA22 can extend along the 1st-1 and 2nd-1 straight areas SA11, SA21 of the first non-display area NDAa-1, extending along the second direction DR2. The 3rd-2 and 4th-2 straight areas SA32, SA42 can extend along the 3rd-1 and 4th-1 straight areas SA31, SA41 of the first non-display area NDAa-1, extending along the first direction DR1. The 1st-2 to 4th-2 curved areas CA12, CA22, CA32, CA42 can extend along the 1st-1 to 4th-1 curved areas CA11, CA21, CA31, CA41 of the first non-display area NDAa-1, respectively.

[0203] In the present embodiment, the anchor can be disposed within the first non-display area NDAa-1. For example, the anchor can be disposed not only within the 1st-1 to 4th-1 straight areas SA11 to SA41 but also within the 1st-1 to 4th-1 curved areas CA11 to CA41. That is, the anchor can be disposed within at least a portion of the 1st-1 to 4th-1 curved areas CA11 to CA41.

[0204] On the other hand, the shape of the display area DA-1 is not limited thereto, and can be such that only a portion of the corners where the two sides intersect has a circular shape, and the remaining portion of the corners where the two sides intersect constitutes a right angle. In this case, a portion of the curved areas can be omitted.

[0205] Figure 17 andFigure 16 is a cross-sectional view that enlarges a portion of the first non-display area of the display panel according to an embodiment of the present disclosure.

[0206] Referring to Figure 17 and Figure 5 , the display panel DP according to the present embodiment can further include an anchor layer ACL. The anchor layer ACL can be disposed within the first non-display area NDAa. The anchor layer ACL can be disposed on the pixel defining film PDL. In the present embodiment, an anchor can be provided from the anchor layer ACL.

[0207] The anchor layer ACL can have an inverted taper shape in a cross-section. That is, an angle θ (hereinafter, taper angle) formed by a side surface of the anchor layer ACL with respect to an upper surface of the pixel defining film PDL (or a lower surface of the anchor layer ACL in contact with the upper surface of the pixel defining film PDL) can be an obtuse angle. A width of the anchor layer ACL in the cross-section can widen as it moves away from the upper surface of the pixel defining film PDL.

[0208] In an embodiment, the anchor layer ACL can contain an organic substance. However, the embodiment is not limited thereto, and the anchor layer ACL can contain an inorganic substance, the organic film and the inorganic film can be configured in multiple layers, and according to the embodiment, can contain a conductive substance. If the anchor layer ACL can be formed to have an inverted taper shape in a cross-section, the anchor layer ACL is not particularly limited in terms of the type of the substance.

[0209] The second dummy pattern DMP2 and the third dummy pattern DMP3 can be formed together with the light emitting pattern EP in a process of forming the light emitting pattern EP (refer to Figure 16 ), and formed to be separated from each other by the inverted taper shape of the anchor layer ACL.

[0210] Referring to Figure 17 , the anchor layer ACL according to an embodiment can define an anchor opening portion OP-ACL. Each of the inner side surfaces IS-A of the anchor layer ACL defining the anchor opening portion OP-ACL can have an obtuse taper angle θ. Each of the anchor opening portions OP-ACL can have a width that narrows as it moves away from the upper surface of the pixel defining film PDL in a cross-section. The second dummy pattern DMP2 can be provided in a plurality, such that the plurality of second dummy patterns DMP2 are disposed to be spaced apart from each other. The second dummy pattern DMP2 can be disposed within the anchor opening portion OP-ACL, respectively. The second dummy pattern DMP2 can be directly disposed on the pixel defining film PDL. The third dummy pattern DMP3 can be disposed on the upper surface of the anchor layer ACL.

[0211] The outer lower encapsulation inorganic pattern LIL OT can be disposed on the anchor layer ACL, the second dummy pattern DMP2, and the third dummy pattern DMP3. The outer lower encapsulation inorganic pattern LIL OT can cover the second dummy pattern DMP2 and the third dummy pattern DMP3, a part of which is disposed on the inner side of the anchor opening portion OP-ACL. The outer lower encapsulation inorganic pattern LIL OT can be in contact with the inner side surface IS-A of the anchor layer ACL inside the anchor opening portion OP-ACL.

[0212] Referring to Figure 18 , the anchor layer ACL according to an embodiment can include a plurality of anchor patterns ACPTa. The anchor patterns ACPTa can be spaced apart from each other. Each of the anchor patterns ACPTa can have an inverted conical shape in a cross section. Each of the outer side surfaces OS-A of the anchor patterns ACPTa can have an obtuse conical angle θ. The second dummy pattern DMP2 can be disposed on the upper surface of the pixel definition layer PDL exposed from the anchor patterns ACPTa. The third dummy pattern DMP3 can be provided in a plurality, such that the plurality of third dummy patterns DMP3 are respectively disposed on the anchor patterns ACPTa.

[0213] The outer lower encapsulation inorganic pattern LIL OT can be disposed on the anchor patterns ACPTa, the second dummy pattern DMP2, and the third dummy pattern DMP3. The outer lower encapsulation inorganic pattern LIL OT can cover the second dummy pattern DMP2 and the third dummy pattern DMP3. The outer lower encapsulation inorganic pattern LIL OT can be in contact with the outer side surface OS-A of each of the anchor patterns ACPTa.

[0214] According to the present embodiment, the anchor can be disposed in the first non-display area NDAa, and the anchor can be provided in a protruding pattern. By this, the third dummy pattern DMP3 formed in the first non-display area NDAa can be disposed on the anchor through a process of forming the emission pattern EP. In addition, the outer lower encapsulation inorganic pattern LIL OT can be fixed through the anchor by being covered by the anchor provided in the protruding pattern. In an embodiment, the outer lower encapsulation inorganic pattern LIL OT can be more stably fixed by the anchor having an inverted conical shape in a cross section. By this, the third dummy pattern DMP3 can also be stably covered by the outer lower encapsulation inorganic pattern LIL OT, and even if the third dummy pattern DMP3 has a low adhesion with the anchor, a warping phenomenon of the third dummy pattern DMP3 can be prevented.

[0215] Figure 18 is a cross-sectional view enlarging a part of the first non-display area of the display panel according to an embodiment of the present application.

[0216] Referring to Figure 18 , the display panel DP according to the present embodiment can include a trench TRC in the first non-display area NDAa.

[0217] In the first non-display region NDAa, the pixel defining film PDLa can define the anchor opening portion OP-ACP. In the first non-display region NDAa, the fifth insulating layer 50a disposed on the lower side of the pixel defining film PDLa can define the recess portion RP. The anchor opening portion OP-ACP can overlap the recess portion RP. That is, the anchor opening portion OP-ACP and the recess portion RP can form an integral space. The trench TRC can be provided by the recess portion RP of the fifth insulating layer 50a and the anchor opening portion OP-ACP of the pixel defining film PDLa forming the integral space.

[0218] The anchor according to the present embodiment can include a first anchor portion ACP1 and a second anchor portion ACP2. In the present embodiment, the portion of the fifth insulating layer 50a disposed in the first non-display region NDAa is defined as the first anchor portion ACP1, and the portion of the pixel defining film PDLa disposed in the first non-display region NDAa is defined as the second anchor portion ACP2. According to the present embodiment, the anchor can be provided by the fifth insulating layer 50a and the pixel defining film PDLa. That is, the anchor can have a trench shape provided by the fifth insulating layer 50a and the pixel defining film PDLa.

[0219] The maximum width W1 of the recess portion RP in the cross section can be wider than the width W2 of the anchor opening portion OP-ACP in the cross section. The portion of the pixel defining film PDLa overlapping the recess portion RP can have a shape protruding from the fifth insulating layer 50a toward the inside of the trench TRC. The lower surface of the portion of the pixel defining film PDLa overlapping the recess portion RP can not be covered by the fifth insulating layer 50a and be exposed. The portion of the pixel defining film PDLa protruding from the fifth insulating layer 50a toward the inside of the trench TRC can define the end portion TPc.

[0220] In Figure 5 The width W2 of the anchor opening portion OP-ACP is exemplarily shown as being narrower as it is closer to the recess portion RP in the thickness direction, but the embodiment is not limited thereto.

[0221] The second dummy pattern DMP2 and the third dummy pattern DMP3 can be formed together with the emission pattern EP in a process of forming the emission pattern EP (refer to ​ ), and be formed to be separated from each other by the end portion TPc of the pixel defining film PDLa. The second dummy pattern DMP2 can be disposed inside the recess portion RP. The third dummy pattern DMP3 can be disposed on the upper surface of the pixel defining film PDLa in the first non-display region NDAa.

[0222] The outer lower encapsulation inorganic pattern LIL_OT can be disposed on the first anchor portion ACP1, the second anchor portion ACP2, the second dummy pattern DMP2, and the third dummy pattern DMP3. The outer lower encapsulation inorganic pattern LIL_OT can cover the second dummy pattern DMP2 and the third dummy pattern DMP3, a part of which is disposed on the inner side of the trench TRC. The outer lower encapsulation inorganic pattern LIL_OT can be in contact with the fifth insulating layer 50a and the pixel definition film PDLa inside the trench TRC. The outer lower encapsulation inorganic pattern LIL_OT can be in contact with the inner side surface of the pixel definition film PDLa defining the anchor opening portion OP-ACP and the lower surface of the pixel definition film PDLa exposed from the fifth insulating layer 50a.

[0223] According to the present embodiment, the anchor can be disposed in the first non-display area NDAa, and the anchor can be provided in a protruding pattern. By this, the third dummy pattern DMP3 formed in the first non-display area NDAa can be disposed on the anchor through a process of forming the light emitting pattern EP. In addition, the outer lower encapsulation inorganic pattern LIL_OT can be fixed through the anchor by covering the anchor provided in the protruding pattern. In an embodiment, the outer lower encapsulation inorganic pattern LIL_OT can be more stably fixed by the anchor having a trench shape in a cross section. By this, the third dummy pattern DMP3 can also be stably covered by the outer lower encapsulation inorganic pattern LIL_OT, and even if the third dummy pattern DMP3 has a low adhesion with the anchor, a warping phenomenon of the third dummy pattern DMP3 can be prevented.

[0224] According to the present embodiment, by providing the anchor in the non-display area, the encapsulation inorganic pattern (or, the outer lower encapsulation inorganic pattern) disposed in the non-display area can be fixed through the anchor. By this, a warping phenomenon of the dummy pattern evaporated in the non-display area from the anchor can be prevented in a process of forming the light emitting pattern. A display panel having improved process reliability can be provided.

[0225] The above has been described with reference to preferred embodiments of the present application, but it will be understood by those skilled in the art or those having ordinary knowledge in the art that various modifications and changes can be made to the present application without departing from the scope of the concept and technical field of the present application recited in the appended claims. Therefore, the technical scope of the present application is not limited by the contents recited in the detailed description of the specification, but should be determined only by the claims.

Claims

1. A display panel, characterized by, comprises: a base layer; a pixel defining film disposed on the base layer and having a light emitting opening portion disposed within a display region; a barrier wall disposed on the pixel defining film and having a barrier wall opening portion disposed within the display region and overlapping the light emitting opening portion; an anode disposed within the display region and exposed by at least a portion of the light emitting opening portion; a cathode disposed within the display region and in contact with the barrier wall within the barrier wall opening portion; a light emitting pattern disposed between the anode and the cathode; and an anchor disposed within a non-display region surrounding at least a portion of the display region.

2. The display panel according to claim 1, wherein: the barrier wall comprises: a first barrier wall layer disposed on the pixel defining film; and a second barrier wall layer disposed on the first barrier wall layer, the barrier wall opening portion comprises: a first opening region defined by an inner side surface of the first barrier wall layer; and a second opening region defined by an inner side surface of the second barrier wall layer and having a width smaller than the first opening region.

3. The display panel according to claim 1, wherein: the display panel further comprises: a first dummy pattern including a first-1 layer dummy pattern formed of the same material as the light emitting pattern and a second-1 layer dummy pattern formed of the same material as the cathode, and disposed on the barrier wall; and a lower encapsulation inorganic pattern at least a portion of which overlaps the barrier wall opening portion and covers the cathode.

4. The display panel according to claim 2, wherein: the non-display region comprises: a first non-display region; and a second non-display region separated from the display region across the first non-display region, the barrier wall comprises: an inner side portion disposed within the display region and having the barrier wall opening portion; and an outer side portion disposed within the second non-display region and having an outer side opening portion.

5. The display panel according to claim 4, wherein: the display panel further comprises: a driving voltage line at least a portion of which is disposed within the second non-display region and receives a bias voltage, the outer side portion of the barrier wall is connected to the driving voltage line within the second non-display region.

6. The display panel according to claim 4, wherein: the barrier wall further comprises: an anchor portion disposed within the first non-display region and having an anchor opening portion, the anchor is provided by the anchor portion of the barrier wall.

7. The display panel according to claim 6, wherein: the anchor opening portion comprises: a third opening region defined by an inner side surface of the first barrier wall layer; and a fourth opening region defined by an inner side surface of the second barrier wall layer and having a width smaller than the third opening region.

8. The display panel according to claim 6, wherein: the display panel further comprises: ​ a second dummy pattern including a first-2 layer dummy pattern formed of the same substance as the light emitting pattern and a second-2 layer dummy pattern formed of the same substance as the cathode, and disposed in the anchor opening portion; and a third dummy pattern including a first-3 layer dummy pattern formed of the same substance as the light emitting pattern and a second-3 layer dummy pattern formed of the same substance as the cathode, and disposed on the anchor portion of the anchor.

9. The display panel according to claim 8, wherein the display panel further comprises: an outer lower encapsulation inorganic pattern disposed in the non-display area and covering the second dummy pattern and the third dummy pattern.

10. The display panel according to claim 6, wherein the anchor opening portion is provided as a plurality of anchor opening portions arranged in a matrix form in a plane.

11. The display panel according to claim 6, wherein the anchor opening portion has any one of a linear shape, a mesh shape, and a zigzag shape in a plane.

12. The display panel according to claim 4, wherein the display panel further comprises: an anchor pattern disposed in the first non-display area and spaced apart from the barrier wall, each of the anchor patterns comprises: a first anchor layer disposed on the pixel defining film and formed of the same substance as the first barrier wall layer; and a second anchor layer disposed on the first anchor layer and formed of the same substance as the second barrier wall layer, an outer side surface of the second anchor layer is protruded than an outer side surface of the first anchor layer, the anchor is provided by the anchor pattern.

13. The display panel according to claim 12, wherein the display panel further comprises: a second dummy pattern including a first-2 layer dummy pattern formed of the same substance as the light emitting pattern and a second-2 layer dummy pattern formed of the same substance as the cathode, and disposed on an upper surface of the pixel defining film exposed from the anchor pattern; a third dummy pattern including a first-3 layer dummy pattern formed of the same substance as the light emitting pattern and a second-3 layer dummy pattern formed of the same substance as the cathode, and disposed on the anchor pattern, respectively; and an outer lower encapsulation inorganic pattern disposed in the first non-display area and covering the second dummy pattern and the third dummy pattern.

14. The display panel according to claim 12, wherein the anchor patterns are arranged in a matrix form in a plane, or each of the anchor patterns has any one of a linear shape, a mesh shape, and a zigzag shape in a plane.

15. The display panel according to claim 4, wherein the display panel further comprises: an anchor layer disposed in the first non-display area and spaced apart from the barrier wall, and having an inverted taper shape in a cross section, the anchor is provided by the anchor layer.

16. The display panel according to claim 4, wherein the display panel further comprises: an insulating layer disposed below the pixel defining film and having a recess in the first non-display area, The pixel defining film has an anchor opening portion overlapping with the recess and forming a space integral with the recess, the recess and the anchor opening portion providing a trench, The anchor is provided by the insulating layer disposed in the first non-display region and the pixel defining film disposed in the first non-display region.

17. The display panel according to claim 16, wherein A maximum width of the recess in a cross section is wider than a width of the anchor opening portion in a cross section, and a portion of the pixel defining film protruding from the insulating layer toward an inside of the trench defines an end portion.

18. The display panel according to claim 4, wherein The display region includes: first and second straight sides spaced apart from each other in a first direction and extending along a second direction intersecting the first direction; third and fourth straight sides spaced apart from each other in the second direction and extending along the first direction; and first, second, third, and fourth curved sides disposed between the first and third straight sides, between the second and third straight sides, between the second and fourth straight sides, and between the first and fourth straight sides, respectively, The first non-display region includes: first and second 1-1 straight regions extending along the first and second straight sides, respectively; third and fourth 1-1 straight regions extending along the third and fourth straight sides, respectively; and first, second, third, and fourth 1-1 curved regions extending along the first to fourth curved sides, respectively, The anchor is disposed in at least a portion of the first to fourth 1-1 curved regions.

19. A display panel, characterized by includes: a base layer; a pixel defining film disposed on the base layer and having a light emitting opening portion disposed in a display region; a barrier wall disposed on the pixel defining film and having a barrier wall opening portion disposed in the display region and overlapping with the light emitting opening portion; an anode disposed in the display region and exposed by at least a portion of the light emitting opening portion; a cathode disposed in the display region and in contact with the barrier wall in the barrier wall opening portion; a light emitting pattern disposed between the anode and the cathode; an anchor disposed in a first non-display region surrounding at least a portion of the display region; a first dummy pattern disposed on the barrier wall in the display region; a second dummy pattern disposed on an upper surface of the pixel defining film exposed from the anchor in the first non-display region; a third dummy pattern disposed on the anchor in the first non-display region; and an outer side underfill inorganic pattern covering the anchor, the second dummy pattern, and the third dummy pattern, The barrier wall includes: an inner side portion disposed in the display region; and an outer side portion disposed in a second non-display region spaced apart from the display region across the first non-display region.

20. The display panel of claim 19, wherein, the anchor has any one of an undercut shape, an inverted taper shape, and a trench shape in cross-section.

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