Display panel

Abstract

The display panel of the present invention may include: a base layer; a pixel defining film disposed on the base layer and having a light emitting opening; a partition wall disposed on the pixel defining film and having a partition wall opening portion overlapping the light emitting opening portion; and a light-emitting element including an anode, an intermediate layer, and a cathode in contact with the partition wall. The partition wall opening may include: a first inner side surface and a third inner side surface extending in a direction parallel to the first direction; a second inner side surface and a fourth inner side surface extending in a direction parallel to a second direction intersecting the first direction; a first corner region; a second corner region; a third corner region; and a fourth corner region.

Description

Technical Field

[0001] The present invention relates to a display panel, and more particularly, to a display panel with improved display quality. Background Art

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

[0003] An organic light emitting display panel may include an anode, a cathode, and a light emitting pattern. The light emitting pattern may be separated according to each light emitting region, and the cathode may provide a common voltage according to each light emitting region. Summary of the invention

[0004] An object of the present invention is to provide a display panel in which light emitting elements are formed without using a metal mask and in which display quality is improved.

[0005] It may be that the display panel according to one embodiment of the present invention includes: a base layer; a pixel defining film, which is arranged on the base layer and has a light-emitting opening; a partition wall, which is arranged on the pixel defining film and has a partition wall opening overlapping the light-emitting opening; and a light-emitting element, including an anode, an intermediate layer, and a cathode in contact with the partition wall. It may be that the partition wall opening includes: a first inner side surface and a third inner side surface, which extend in a direction parallel to the first direction; a second inner side surface and a fourth inner side surface, which extend in a direction parallel to a second direction intersecting the first direction; a first corner region, which connects the first inner side surface and the second inner side surface; a second corner region, which connects the second inner side surface and the third inner side surface; a third corner region, which connects the third inner side surface and the fourth inner side surface; and a fourth corner region, which connects the fourth inner side surface and the first inner side surface.

[0006] It may be that each of the first to fourth corner regions includes a plurality of sub-inner side surfaces, and an inner angle formed by the first inner side surface and at least one of the plurality of sub-inner side surfaces adjacent to the first inner side surface is greater than 180 degrees.

[0007] It may be that, on a plane, the first corner area is in an arc shape connecting the first inner side surface and the second inner side surface.

[0008] It may be that the first corner area includes: a first sub-inner side surface extending from the first inner side surface; and a second sub-inner side surface extending from the first sub-inner side surface and connected to the second inner side surface.

[0009] It may be that the inner angle formed by the first sub-inner surface and the first inner surface is greater than 180 degrees, and the inner angle formed by the second sub-inner surface and the second inner surface is greater than 180 degrees.

[0010] It may be that the first corner area includes: a first sub-inner side surface extending from the first inner side surface; a second sub-inner side surface extending from the first sub-inner side surface; and a third sub-inner side surface extending from the second sub-inner side surface and connected to the second inner side surface.

[0011] It may be that the inner angle formed by the first sub-inner side surface and the first inner side surface is greater than 180 degrees, and the inner angle formed by the third sub-inner side surface and the second inner side surface is greater than 180 degrees.

[0012] It may be that the inner angle formed by the first sub-inner side surface and the second sub-inner side surface is 90 degrees, and the inner angle formed by the second sub-inner side surface and the third sub-inner side surface is 90 degrees.

[0013] It may be that the first corner area includes: a first sub-inner side surface extending from the first inner side surface; a second sub-inner side surface extending from the first sub-inner side surface; a third sub-inner side surface extending from the second sub-inner side surface; and a fourth sub-inner side surface extending from the third sub-inner side surface and connected to the second inner side surface.

[0014] It may be that the inner angle formed by the first sub-inner side surface and the first inner side surface is greater than 180 degrees, and the inner angle formed by the fourth sub-inner side surface and the second inner side surface is greater than 180 degrees.

[0015] It may be that the inner angle formed by the first sub-inner surface and the second sub-inner surface is 90 degrees, the inner angle formed by the second sub-inner surface and the third sub-inner surface is 90 degrees, and the inner angle formed by the third sub-inner surface and the fourth sub-inner surface is 90 degrees.

[0016] It may be that each of the first to fourth inner side surfaces includes a protruding area having a plurality of sub-inner side surfaces, and the plurality of sub-inner side surfaces extend in a direction away from a center of the partition wall opening.

[0017] It may be that the display panel according to an embodiment of the present invention includes: a base layer; a pixel defining film, which is arranged on the base layer and has a light-emitting opening; a partition wall, which is arranged on the pixel defining film and has a partition wall opening overlapping the light-emitting opening; and a light-emitting element, including an anode, an intermediate layer, and a cathode in contact with the partition wall. It may be that the partition wall opening includes: a first inner side surface and a third inner side surface, which extend in a direction parallel to the first direction; a second inner side surface and a fourth inner side surface, which extend in a direction parallel to a second direction intersecting the first direction; and a corner area, which connects the first inner side surface to the fourth inner side surface and is formed by extending in a direction away from the center of the partition wall opening.

[0018] It may be that the corner area includes: a first corner area connecting the first inner side surface and the second inner side surface; a second corner area connecting the second inner side surface and the third inner side surface; a third corner area connecting the third inner side surface and the fourth inner side surface; and a fourth corner area connecting the fourth inner side surface and the first inner side surface.

[0019] It may be that each of the first to fourth corner regions includes a plurality of sub-inner side surfaces, and an inner angle formed by the first inner side surface and at least one of the plurality of sub-inner side surfaces adjacent to the first inner side surface is greater than 180 degrees.

[0020] It may be that, on a plane, the first corner area is in an arc shape connecting the first inner side surface and the second inner side surface.

[0021] It may be that the first corner area includes: a first sub-inner side surface extending from the first inner side surface; and a second sub-inner side surface extending from the first sub-inner side surface and connected to the second inner side surface.

[0022] It may be that the first corner area includes: a first sub-inner side surface extending from the first inner side surface; a second sub-inner side surface extending from the first sub-inner side surface; and a third sub-inner side surface extending from the second sub-inner side surface and connected to the second inner side surface.

[0023] It may be that the first corner area includes: a first sub-inner side surface extending from the first inner side surface; a second sub-inner side surface extending from the first sub-inner side surface; a third sub-inner side surface extending from the second sub-inner side surface; and a fourth sub-inner side surface extending from the third sub-inner side surface and connected to the second inner side surface.

[0024] It may be that each of the first to fourth inner side surfaces includes a protruding area having a plurality of sub-inner side surfaces, and the plurality of sub-inner side surfaces extend in a direction away from a center of the partition wall opening.

[0025] As described above, the partition wall opening of the present invention may further include an expanded corner region. Thus, even if a shadow region is formed in the partition wall, the contact area of ​​the cathode is formed to be larger than the effective contact area, thereby reducing or eliminating defects in the light-emitting element. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0027] Figure 1b is an exploded perspective view of a display device according to an embodiment of the present invention.

[0028] Figure 2 is a cross-sectional view of a display module according to an embodiment of the present invention.

[0029] Figure 3 is a plan view of a display panel according to an embodiment of the present invention.

[0030] Figure 4 FIG. 1 is a plan view showing an enlarged portion of a display area of ​​a display panel according to an embodiment of the present invention.

[0031] Figure 5 is along Figure 3 A cross-sectional view of a display panel according to an embodiment of the present invention taken along line II'.

[0032] Figure 6 is along Figure 4 A cross-sectional view taken along line II-II'.

[0033] Figure 7 is a perspective view of a first partition wall layer of a display panel according to a comparative example of the present invention.

[0034] Figure 8 is a perspective view of a first partition wall layer of a display panel according to an embodiment of the present invention.

[0035] Fig. 9 is a perspective view of a first partition wall layer of a display panel according to an embodiment of the present invention.

[0036] Fig.10 is a perspective view of a first partition wall layer of a display panel according to an embodiment of the present invention.

[0037] Fig.11 is a perspective view of a first partition wall layer of a display panel according to an embodiment of the present invention.

[0038] Fig.12 is a perspective view of a first partition wall layer of a display panel according to an embodiment of the present invention.

[0039] Fig.13 is a perspective view of a first partition wall layer of a display panel according to an embodiment of the present invention.

[0040] Fig.14 is a perspective view of a first partition wall layer of a display panel according to an embodiment of the present invention.

[0041] (Explanation of Reference Numerals)

[0042] DP: Display Panel PW: Partition Wall

[0043] ED: Light-emitting element OP-E: Light-emitting opening

[0044] OP-P: Partition wall opening AE: Anode

[0045] EP: luminous pattern CE: cathode

[0046] S1, S2, S3, S4: First to fourth medial sides

[0047] CA1, CA2, CA3, CA4: first to fourth corner areas

[0048] P1, P2, P3, P4: Protruding area DETAILED DESCRIPTION

[0049] In this specification, when it is mentioned that any constituent element (or region, layer, part, etc.) is "on" another constituent element, "connected to" or "combined to" another constituent element, it means that any constituent element can be directly configured / connected / combined on another constituent element or a third constituent element can be configured between them.

[0050] The same reference numerals refer to the same components. In addition, in the drawings, the thickness, proportion and size of the components are exaggerated for the effective description of the technical content. "And / or" includes all combinations that can be defined by the relevant components.

[0051] The terms "first", "second" and the like may be used to describe a variety of constituent elements, but the above constituent elements are not limited by the above terms. The above terms are only used to distinguish one constituent element from another constituent element. For example, without departing from the scope of the present invention, the first constituent element may be named as the second constituent element, and similarly, the second constituent element may be named as the first constituent element. As long as it is not clearly indicated as different in the context, a singular expression includes a plural expression.

[0052] In addition, terms such as “below”, “lower side”, “above”, and “upper side” are used to explain the relationship between components shown in the drawings. The above terms are relative concepts and are explained based on the directions shown in the drawings.

[0053] The terms "including" or "having" should be understood as being used to specify the existence of the features, numbers, steps, tasks, constituent elements, parts or their combinations recorded in the specification, and do not preclude the existence or additional possibilities of one or more other features or numbers, steps, tasks, constituent elements, parts or their combinations.

[0054] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this specification have the same meanings as those generally understood by persons skilled in the art to which the present invention belongs. In addition, terms such as those defined in commonly used dictionaries should be interpreted as having the same meanings as those in the context of the relevant technology, and should not be interpreted as overly idealized or overly formalized meanings unless explicitly defined herein.

[0055] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0056] Figure 1a is a perspective view of a display device DD according to an embodiment of the present invention, Figure 1b is an exploded perspective view of a display device DD according to an embodiment of the present invention.

[0057] In one embodiment, the display device DD may be a large electronic device such as a television, a monitor, or an external billboard. In addition, the display device DD may be a small or medium-sized electronic device such as a personal computer, a notebook computer, a personal digital terminal, a car navigation unit, a game console, a smart phone, a tablet, and a camera. However, this is an exemplary case, and other display devices may also be used as long as it does not exceed the concept of the present invention. Figure 1a as well as Figure 1b exemplarily shows that the display device DD is a smart phone.

[0058] Reference Figure 1a as well as Figure 1b , the display device DD can display an image IM toward a third direction DR3 in a display surface FS parallel to each of the first direction DR1 and the second direction DR2. The third direction DR3 can be a normal direction of a plane defined by the first direction DR1 and the second direction DR2. The image IM can include not only dynamic images but also still images. Figure 1a , a clock window and an icon are shown as an example of the image IM. The display surface FS displaying the image IM may correspond to the front surface of the display device DD.

[0059] In this embodiment, the front (or top) and back (or bottom) of each component are defined based on the direction of displaying the image IM. It can be that the front and back face each other in the third direction DR3, and the normal direction of each of the front and back is parallel to the third direction DR3. On the other hand, the directions indicated by the first to third directions DR1, DR2, and DR3 are relative concepts and can be converted to other directions. In this specification, "on a plane" can mean the situation when observed in the third direction DR3.

[0060] The display device DD 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.

[0061] The window WP may include an optically transparent insulating material. For example, the window WP may include glass or plastic. The front side of the window WP may define a display surface FS of the display device DD. The display surface FS may include a transmission area TA and a frame area BZA. The transmission area TA may be an optically transparent area. For example, the transmission area TA may be an area having a visible light transmittance of about 90% or more.

[0062] The frame area BZA may be an area having a relatively lower light transmittance than the transmission area TA. The frame area BZA may define the shape of the transmission area TA. The frame area BZA may be adjacent to the transmission area TA and surround the transmission area TA. However, this is an exemplary case, and the frame area BZA of the window WP may be omitted. The window WP may include at least one functional layer of an anti-fingerprint layer, a hard coating layer, and an anti-reflection layer, and is not limited to any one embodiment.

[0063] 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 in the display module DM is displayed on the display surface IS of the display module DM and is recognized by the user externally through the transmission area TA.

[0064] The display module DM may include a display area DA and a non-display area NDA. The display area DA may be an area activated according to an electrical signal. The non-display area NDA may be adjacent to the display area DA. The non-display area NDA may surround the display area DA. The non-display area NDA may be an area covered by a frame area BZA and cannot be recognized from the outside.

[0065] The housing HAU may be combined with the window WP. The housing HAU may be combined with the window WP to provide a predetermined inner space. The display module DM may be accommodated in the inner space.

[0066] The housing HAU may include a relatively high rigidity material. For example, the housing HAU may include glass, plastic, or metal, or include a plurality of frames and / or plates formed by a combination thereof. The housing HAU may stably protect the structure of the display device DD accommodated in the internal space from external impact.

[0067] Figure 2 is a cross-sectional view of a display module DM according to an embodiment of the present invention.

[0068] Reference Figure 2 , 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 Figure 1a ) may also include a protective component arranged under the display panel DP or an anti-reflection component and / or a window component arranged on the upper surface of the input sensor INS.

[0069] The display panel DP may be a light-emitting display panel. However, this is an exemplary case and is not particularly limited thereto. 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 the organic light-emitting display panel may include an organic light-emitting substance. The light-emitting layer in the 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.

[0070] The display panel DP may include a base layer BL, a circuit element layer DP-CL configured on the base layer BL, a display element layer DP-OLED, and a thin film encapsulation layer TFE. The input sensor INS may be directly configured on the thin film encapsulation layer TFE. In this specification, "the A structure is directly configured on the B structure" means that no adhesive layer is configured between the A structure and the B structure.

[0071] 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 similarly defined in the base layer BL.

[0072] The circuit element layer DP-CL may include at least one insulating layer and circuit elements. The insulating layer includes at least one inorganic layer and at least one organic layer. The circuit elements include signal lines, pixel driving circuits, and the like.

[0073] The display element layer DP-OLED may include partition walls and a light emitting element. The light emitting element may include an anode, an intermediate layer, and a cathode.

[0074] The thin film encapsulation layer TFE may include a plurality of thin films, some of which are configured to improve optical efficiency, and some of which are configured to protect the organic light emitting diode.

[0075] The input sensor INS obtains coordinate information of the external input. The input sensor INS may have a multi-layer structure. The input sensor INS may include a single-layer or multi-layer conductive layer. In addition, the input sensor INS may include a single-layer or multi-layer insulating layer. The input sensor INS may sense the external input in a capacitive manner. However, this is an exemplary case and is not limited thereto. For example, in one embodiment, the input sensor INS may also sense the external input in an electromagnetic induction manner or a pressure sensing manner. On the other hand, in another embodiment of the present invention, the input sensor INS may be omitted.

[0076] Figure 3 is a plan view of a display panel DP according to an embodiment of the present invention.

[0077] Reference Figure 3 , the display panel DP may include a display area DA and a non-display area NDA around the display area DA. The display panel DP may include pixels PX and signal lines SGL electrically connected to the pixels PX. The display panel DP may include a drive circuit GDC and a pad portion PLD. The display area DA and the non-display area NDA may be divided according to the presence or absence of the pixel PX. The pixel PX may be configured in the display area DA. The drive circuit GDC and the pad portion PLD may be configured in the non-display area NDA.

[0078] The pixels PX may be arranged in the first direction DR1 and the second direction DR2. The pixels PX may 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.

[0079] The signal lines SGL may include gate lines GL, data lines DL, power lines PL, and control signal lines CSL. Each of the gate lines GL may be connected to a corresponding pixel in the pixels PX, and each of the data lines DL may be connected to a corresponding pixel in the pixels PX. The power lines PL may be electrically connected to the pixels PX. The control signal lines CSL may be connected to the drive circuit GDC to provide a control signal to the drive circuit GDC.

[0080] The driving circuit GDC may include a gate driving circuit. The gate driving circuit may generate a gate signal and sequentially output the generated gate signal to the gate line GL. The gate driving circuit may further output another control signal to the pixel driving circuit.

[0081] The pad portion PLD may be a portion for connecting a flexible circuit substrate. The pad portion PLD may include a pixel pad D-PD, and the pixel pad D-PD may be a pad for connecting the flexible circuit substrate to the display panel DP. Each of the pixel pads D-PD may be connected to a corresponding signal line in the signal line SGL. The pixel pad D-PD may be connected to a corresponding pixel PX through the signal line SGL. In addition, any one of the pixel pads D-PD may be connected to the drive circuit GDC.

[0082] In addition, the pad portion PLD may further include an input pad. The input pad may be used to connect the flexible circuit substrate to the input sensor INS (see Figure 2 However, the input pad may be configured on the input sensor INS (refer to Figure 2 ) and connected to the pixel pad D-PD and a separate circuit substrate. Alternatively, the input sensor INS can be omitted (refer to Figure 2 ), and may not further include an input pad.

[0083] Figure 4 is an enlarged view of a display panel DP according to an embodiment of the present invention (refer to Figure 2 ) is a plan view of a portion of the display area DA. Figure 4 The display module DM (refer to Figure 1b ) display surface IS (refer to Figure 1b ) is a plane of the display module DM observed from above, and shows the array of light-emitting areas PXA-R, PXA-G, and PXA-B.

[0084] Reference Figure 4 , the display area DA may 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 may correspond to areas where light provided by the light emitting element is emitted, respectively. The first to third light emitting areas PXA-R, PXA-G, PXA-B may be arranged according to the direction toward the display module DM (refer to Figure 2 ) is divided by the color of the light emitted from the outside.

[0085] The first to third light emitting regions PXA-R, PXA-G, and PXA-B may respectively provide first to third color lights having different colors from each other. For example, the first color light may be red light, the second color light may be green light, and the third color light may be blue light. However, the examples of the first to third color lights are not necessarily limited to the examples.

[0086] Each of the first to third light emitting regions PXA-R, PXA-G, and PXA-B may be defined as a region where the upper surface of the anode is exposed through a light emitting opening described later. The peripheral region NPXA may set the boundaries of the first to third light emitting regions PXA-R, PXA-G, and PXA-B and prevent color mixing between the first to third light emitting regions PXA-R, PXA-G, and PXA-B.

[0087] Each of the first to third light emitting regions PXA-R, PXA-G, and PXA-B may be provided in plurality and have a predetermined arrangement form and are repeatedly arranged in the display area DA. For example, the first and second light emitting regions PXA-R and PXA-G may be alternately arranged along the second direction DR2 to form a "first group". The third light emitting region PXA-B may be arranged along the second direction DR2 to form a "second group". Each of the "first group" and the "second group" may be provided in plurality, and the "first group" and the "second group" may be alternately arranged with each other along the first direction DR1.

[0088] on the other hand, Figure 4 The arrangement of the first to third light emitting regions PXA-R, PXA-G, and PXA-B is shown as an example, but is not limited thereto and can be arranged in various forms. Figure 4 As shown, the first to third light emitting regions PXA-R, PXA-G, and PXA-B may have a stripe arrangement. Alternatively, the first to third light emitting regions PXA-R, PXA-G, and PXA-B may also have a penti Arrangement or Diamond ) arrangement format.

[0089] The first to third light emitting regions PXA-R, PXA-G, and PXA-B may have various shapes on a plane, for example, polygonal, circular, or elliptical shapes. Figure 4 The first to third light emitting regions PXA-R, PXA-G, PXA-B having a quadrangular shape on a plane are exemplarily shown.

[0090] The first to third light emitting regions PXA-R, PXA-G, and PXA-B may have the same shape as each other on a plane, or at least a portion thereof may have different shapes from each other. Figure 4The first to third light-emitting regions PXA-R, PXA-G, and PXA-B having the same shape as each other on a plane are exemplarily shown, but in another embodiment, the first and third light-emitting regions PXA-R and PXA-B may have the same shape as each other, and the second light-emitting region PXA-G may have a shape different from the first and third light-emitting regions PXA-R and PXA-B.

[0091] At least a portion of the first to third light-emitting regions PXA-R, PXA-G, and PXA-B may have different areas on a plane. In one embodiment, the area of ​​the second light-emitting region PXA-G emitting green light may be larger than the area of ​​the first light-emitting region PXA-R emitting red light, and smaller than the area of ​​the third light-emitting region PXA-B emitting blue light. However, the size relationship between the first to third light-emitting regions PXA-R, PXA-G, and PXA-B according to the light-emitting color is not limited thereto, and may be determined according to the display module DM (refer to Figure 2 ) design. In addition, not limited to this, the first to third light-emitting regions PXA-R, PXA-G, and PXA-B may also have the same area as each other on a plane.

[0092] On the other hand, the display module DM of the present invention (refer to Figure 2 The shapes, areas, arrays, etc. of the first to third light-emitting regions PXA-R, PXA-G, PXA-B can be determined according to the color of the emitted light or the display module DM (refer to Figure 2 ) size and structure are designed differently, not limited to Figure 4 The embodiment shown.

[0093] Figure 5 is along Figure 3 A cross-sectional view of a display panel according to an embodiment of the present invention taken along line II'. Figure 5 When, refer to Figure 2 The following description will be given, and descriptions of the same reference numerals will be omitted. Figure 5 The display area DA is shown in an enlarged manner (see Figure 4 ) within a light emitting area PXA, Figure 5 The light emitting area PXA can be Figure 4 Corresponding to any one of the first to third light emitting areas PXA-R, PXA-G, PXA-B.

[0094] Reference Figure 5 , the display panel DP may include a base layer BL, a circuit element layer DP-CL, a display element layer DP-OLED and a thin film encapsulation layer TFE.

[0095] The display panel DP may 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 may be selectively patterned by photolithography and etching. In this manner, semiconductor patterns, conductive patterns, signal lines, etc. included in the circuit element layer DP-CL and the display element layer DP-OLED may be formed.

[0096] The circuit element layer DP-CL may be disposed on the base layer BL. The circuit element layer DP-CL may include a buffer layer BFL, a transistor TR1, a signal transmission region SCL, first to fifth insulating layers 10, 20, 30, 40, 50, an electrode EE, and a plurality of connection electrodes CNE1, CNE2.

[0097] The buffer layer BFL may be disposed on the base layer BL. The buffer layer BFL may improve the bonding force between the base layer BL and the semiconductor pattern. The buffer layer BFL may include a silicon oxide layer and a silicon nitride layer. The silicon oxide layer and the silicon nitride layer may be alternately stacked.

[0098] A semiconductor pattern may be disposed on the buffer layer BFL. The semiconductor pattern may include polysilicon. However, it is not limited thereto, and the semiconductor pattern may also include amorphous silicon or metal oxide. Figure 5 Only a part of the semiconductor pattern is shown as an example, and in the plurality of light emitting regions PXA-R, PXA-G, PXA-B (refer to Figure 4 ) may further be configured with a semiconductor pattern. The semiconductor pattern may be arranged in a specific rule across multiple light emitting regions PXA-R, PXA-G, and PXA-B. The electrical properties of the semiconductor pattern may be different depending on whether it is doped or not. The semiconductor pattern may include a first region with a large doping concentration and a second region with a small doping concentration. The first region may be doped with an N-type dopant or a P-type dopant. A P-type transistor may include a first region doped with a P-type dopant.

[0099] The conductivity of the first region is greater than that of the second region, and it substantially functions as an electrode or a signal line. The second region may substantially correspond to an active region (or a channel region) of a transistor. In other words, a portion of the semiconductor pattern may be an active region of a transistor, another portion may be a source or a drain of the transistor, and another portion may be a conductive region.

[0100] The source S, the active region A, and the drain D of the transistor TR1 may be formed of a semiconductor pattern. Figure 5 A portion of a signal transmission region SCL formed of a semiconductor pattern is shown in . Although not separately shown, the signal transmission region SCL may be connected to the drain D of the transistor TR1 on a plane.

[0101] The first to fifth insulating layers 10, 20, 30, 40, 50 may be disposed on the buffer layer BFL. The first to fifth insulating layers 10, 20, 30, 40, 50 may be inorganic layers or organic layers.

[0102] The first insulating layer 10 may be disposed on the buffer layer BFL. The first insulating layer 10 may cover the source S, the active area A, the drain D, and the signal transmission region SCL of the transistor TR1 disposed on the buffer layer BFL. The gate G of the transistor TR1 may be disposed on the first insulating layer 10. The second insulating layer 20 may be disposed on the first insulating layer 10 to cover the gate G. The electrode EE may be disposed on the second insulating layer 20. The third insulating layer 30 may be disposed on the second insulating layer 20 to cover the electrode EE.

[0103] The first connection electrode CNE1 may be disposed on the third insulating layer 30. The first connection electrode CNE1 may be connected to the signal transmission region SCL through a contact hole CNT-1 penetrating the first to third insulating layers 10, 20, and 30. The fourth insulating layer 40 may be disposed on the third insulating layer 30 to cover the first connection electrode CNE1. The fourth insulating layer 40 may be an organic layer.

[0104] The second connection electrode CNE2 may be disposed on the fourth insulating layer 40. The second connection electrode CNE2 may be connected to the first connection electrode CNE1 through a contact hole CNT-2 penetrating the fourth insulating layer 40. The fifth insulating layer 50 may be disposed on the fourth insulating layer 40 to cover the second connection electrode CNE2. The fifth insulating layer 50 may be an organic layer.

[0105] The display element layer DP-OLED may be disposed on the circuit element layer DP-CL. The display element layer DP-OLED may include a light emitting element ED, a sacrificial pattern SP, a pixel defining layer PDL, and a partition wall PW.

[0106] The light emitting element ED may include an anode (or first electrode) AE, a light emitting pattern EP, and a cathode (or second electrode) CE.

[0107] The anode AE ​​may be disposed on the fifth insulating layer 50 of the circuit element layer DP-CL. The anode AE ​​may be a transmissive electrode, a semi-transmissive electrode or a reflective electrode. The anode AE ​​may be connected to the second connection electrode CNE2 by passing through the fifth insulating layer 50 to define the connection contact hole CNT-3. Therefore, the anode AE ​​may be electrically connected to the signal transmission region SCL through the first and second connection electrodes CNE1 and CNE2, thereby being electrically connected to the corresponding circuit element. The anode AE ​​may include a single-layer or multi-layer structure. The anode AE ​​may include a plurality of layers including ITO and Ag. For example, the anode AE ​​may include a layer including ITO (hereinafter, the lower ITO layer), a layer including Ag disposed on the lower ITO layer (hereinafter, the Ag layer), and a layer including ITO disposed on the Ag layer (hereinafter, the upper ITO layer).

[0108] The sacrificial pattern SP may be disposed between the anode AE ​​and the pixel defining film PDL. The sacrificial pattern SP may define (or may have) a sacrificial opening OP-S exposing a portion of the upper surface of the anode AE. The sacrificial opening OP-S may overlap with the light emitting opening OP-E described later.

[0109] The pixel defining film PDL may be disposed on the fifth insulating layer 50 of the circuit element layer DP-CL. A light emitting opening portion OP-E may be defined (or may be present) in the pixel defining film PDL. The light emitting opening portion OP-E may correspond to the anode AE, and the pixel defining film PDL may expose at least a portion of the anode AE ​​through the light emitting opening portion OP-E.

[0110] In addition, the light emitting opening OP-E may correspond to the sacrificial opening OP-S of the sacrificial pattern SP. According to this embodiment, the upper surface of the anode AE ​​may be separated from the pixel defining film PDL in a cross section via the sacrificial pattern SP, thereby protecting the anode AE ​​from damage during the formation process of the light emitting opening OP-E.

[0111] On a plane, the area of ​​the light-emitting opening OP-E may be smaller than the area of ​​the sacrificial opening OP-S. That is, the inner side surface of the pixel defining film PDL defining the light-emitting opening OP-E may be closer to the center of the anode AE ​​than the inner side surface of the sacrificial pattern SP defining the sacrificial opening OP-S. However, not limited to this, the inner side surface of the sacrificial pattern SP defining the sacrificial opening OP-S may also be substantially aligned with the inner side surface of the pixel defining film PDL defining the light-emitting opening OP-E. At this time, the light-emitting area PXA may also be regarded as the area of ​​the anode AE ​​exposed from the corresponding sacrificial opening OP-S.

[0112] The pixel defining film PDL may include an inorganic insulating material. The pixel defining film PDL may be disposed between the anode AE ​​and the partition wall PW so as to block the anode AE ​​and the partition wall PW from being electrically connected to each other.

[0113] The light-emitting pattern EP may be arranged on the anode AE. The light-emitting pattern EP may include a light-emitting layer including a light-emitting substance. The light-emitting pattern EP may also include a hole injection layer (HIL) and a hole transport layer (HTL) arranged between the anode AE ​​and the light-emitting layer, and may also include an electron transport layer (ETL) and an electron injection layer (EIL) arranged on the light-emitting layer. The light-emitting pattern EP may also be referred to as an "organic layer" or an "intermediate layer".

[0114] The light emitting pattern EP may be patterned by a tip portion defined in the partition wall PW. The light emitting pattern EP may be disposed inside the light emitting opening OP-E and the partition wall opening OP-P. The light emitting pattern EP may cover a portion of the upper surface of the pixel defining film PDL exposed from the partition wall opening OP-P.

[0115] The cathode CE may be disposed on the light emitting pattern EP. The cathode CE may be patterned by a tip portion defined in the partition wall PW. At least a portion of the cathode CE may be disposed in the partition wall opening OP-P and may contact the partition wall PW in the partition wall opening OP-P.

[0116] The cathode CE may be arranged on the light emitting pattern EP. The cathode CE may be patterned by a tip portion defined in the partition wall PW. At least a portion of the cathode CE may be arranged in the partition wall opening OP-P. The cathode CE may be in contact with the inner side surface S-L1 of the first partition wall layer L1. The cathode CE may have conductivity. As long as the cathode CE has conductivity, it may be formed of various materials such as metal, transparent conductive oxide (Transparent Conductive Oxide, TCO) or conductive polymer. For example, the cathode CE may include silver (Ag), magnesium (Mg), lead (Pu), copper (Cu) or compounds thereof.

[0117] The partition wall PW may be disposed on the pixel defining film PDL. A partition wall opening OP-P may be defined in the partition wall PW. The partition wall opening OP-P may correspond to the light emitting opening OP-E and may expose at least a portion of the anode AE.

[0118] The partition wall PW may have an undercut shape in cross section. The partition wall PW may include a plurality of layers stacked in sequence, and at least one of the plurality of layers may be recessed than the other layers. Thus, the partition wall PW may include a pointed end.

[0119] The partition wall PW may include a first partition wall layer L1 and a second partition wall layer L2. The first partition wall layer L1 may be disposed on the pixel definition layer PDL, and the second partition wall layer L2 may be disposed on the first partition wall layer L1. Figure 5 As shown, the thickness of the first partition wall layer L1 may be greater than the thickness of the second partition wall layer L2, but is not limited thereto.

[0120] The first partition wall layer L1 may be relatively recessed relative to the light emitting region PXA compared to the second partition wall layer L2. The first partition wall layer L1 may be formed by undercutting relative to the second partition wall layer L2. A portion of the second partition wall layer L2 protruding from the first partition wall layer L1 toward the light emitting region PXA may be defined as a tip portion within the partition wall PW.

[0121] The partition wall opening OP-P defined in the partition wall PW may include a first area A1 and a second area A2. The first partition wall layer L1 may include an inner side surface S-L1 of the first area A1 defining the partition wall opening OP-P, and the second partition wall layer L2 may include an inner side surface S-L2 defining the second area A2. In cross section, the inner side surface S-L2 of the second partition wall layer L2 may be closer to the center of the anode AE ​​than the inner side surface S-L1 of the first partition wall layer L1. The inner side surface S-L1 of the first partition wall layer L1 may be recessed in a direction away from the center of the anode AE ​​than the inner side surface S-L2 of the second partition wall layer L2. Thus, the second partition wall layer L2 protruding toward the light emitting area PXA may include a tip portion.

[0122] The width of the first area A1 may be different from the width of the second area A2. The width of the first area A1 may be wider than the width of the second area A2. At this time, the second area A2 of the partition wall opening portion OP-P may be an area defining a tip portion.

[0123] Each of the first partition wall layer L1 and the second partition wall layer L2 may include a conductive material. For example, the conductive material may include a metal, a transparent conductive oxide (Transparent Conductive Oxide, TCO) or a combination thereof. For example, the metal may include gold (Au), silver (Ag), aluminum (Al), magnesium (Mg), lithium (Li), molybdenum (Mo), titanium (Ti), copper (Cu) or an alloy. The transparent conductive oxide may include indium tin oxide (Indium Tin Oxide, ITO), indium zinc oxide (Indium Zinc Oxide, IZO), zinc oxide (Zinc Oxide), indium oxide (Indium Oxide), indium gallium oxide (Indium Gallium Oxide), indium gallium zinc oxide (Indium Gallium Zinc Oxide, IGZO) or aluminum zinc oxide (Aluminum Zinc Oxide).

[0124] exist Figure 5 exemplarily shows that each of the inner side surface S-L1 of the first partition wall layer L1 and the inner side surface S-L2 of the second partition wall layer L2 is perpendicular to the upper surface of the pixel defining film PDL, but the present invention is not limited thereto. For example, the partition wall PW may have a tapered shape or an inverse tapered shape.

[0125] The partition wall PW may receive a driving voltage (or a bias voltage), and thus the cathode CE may be electrically connected to the partition wall PW to receive the driving voltage.

[0126] The thin film encapsulation layer TFE may be disposed on the display element layer DP-OLED. The thin film encapsulation layer TFE may include a lower encapsulation inorganic pattern LIL, an encapsulation organic film OL, and an upper encapsulation inorganic film UIL.

[0127] The lower encapsulation inorganic pattern LIL may correspond to the light emitting opening OP-E. The lower encapsulation inorganic pattern LIL may cover the cathode CE, and a portion thereof may be arranged inside the partition wall opening OP-P. For example, a portion of the lower encapsulation inorganic pattern LIL may be formed inside the partition wall opening OP-P, and another portion of the lower encapsulation inorganic pattern LIL may be formed on the partition wall PW. The encapsulation organic film OL may cover the lower encapsulation inorganic pattern LIL and provide a flat upper surface. The upper encapsulation inorganic film UIL may be arranged on the encapsulation organic film OL.

[0128] The lower encapsulation inorganic pattern LIL and the upper encapsulation inorganic film UIL may protect the display element layer DP-OLED from moisture / oxygen, and the encapsulation organic film OL may protect the display element layer DP-OLED from foreign matter such as dust particles.

[0129] Figure 6 is along Figure 4 A cross-sectional view taken along line II-II'. Figure 6 A first light emitting region PXA-R, a second light emitting region PXA-G, and a third light emitting region PXA-B are shown in an enlarged manner. Figure 5 The description of a light emitting region PXA can also be applied to Figure 6 Each of the first to third light emitting areas PXA-R, PXA-G, PXA-B.

[0130] Reference Figure 6 According to the present embodiment, the display panel DP may include a base layer BL, a circuit element layer DP-CL, a display element layer DP-OLED, and a thin film encapsulation layer TFE. The display element layer DP-OLED may include light emitting elements ED1, ED2, ED3, sacrificial patterns SP1, SP2, SP3, a pixel defining film PDL, and a partition wall PW.

[0131] The light-emitting elements ED1, ED2, and ED3 may 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 may include a first anode AE1, a first light-emitting pattern EP1, and a first cathode CE1. The second light-emitting element ED2 may include a second anode AE2, a second light-emitting pattern EP2, and a second cathode CE2. The third light-emitting element ED3 may include a third anode AE3, a third light-emitting pattern EP3, and a third cathode CE3. The first to third anodes AE1, AE2, and AE3 may be provided in a plurality of patterns. In one embodiment, the first light-emitting pattern EP1 may provide red light, the second light-emitting pattern EP2 may provide green light, and the third light-emitting pattern EP3 may provide blue light.

[0132] The first to third light emitting openings OP1-E, OP2-E, and OP3-E may be defined in the pixel defining film PDL. The first light emitting opening OP1-E may expose at least a portion of the first anode AE1. The second light emitting opening OP2-E may expose at least a portion of the second anode AE2. The third light emitting opening OP3-E may expose at least a portion of the third anode AE3. In one embodiment, the first light emitting region PXA-R may be defined as a region on the top of the first anode AE1 exposed by the first light emitting opening OP1-E. The second light emitting region PXA-G may be defined as a region on the top of the second anode AE2 exposed by the second light emitting opening OP2-E. The third light emitting region PXA-B may be defined as a region on the top of the third anode AE3 exposed by the third light emitting opening OP3-E.

[0133] The sacrificial patterns SP1, SP2, SP3 may 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 may be disposed on the first to third anodes AE1, AE2, AE3, respectively. The first to third sacrificial openings OP1-S, OP2-S, OP3-S respectively overlapping the first to third light emitting openings OP1-E, OP2-E, OP3-E, may be defined in the first to third sacrificial patterns SP1, SP2, SP3.

[0134] In the present embodiment, first to third partition wall openings OP1-P, OP2-P, OP3-P respectively overlapping with the first to third light emitting openings OP1-E, OP2-E, OP3-E may be defined in the partition wall PW.

[0135] Each of the first to third partition wall openings OP1-P, OP2-P, OP3-P may include Figure 5 The first area A1 (see Figure 5 ) and the second area A2 (refer to Figure 5 The first partition wall layer L1 may include an inner side surface S-L1 of a first region A1 defining the first to third partition wall openings OP1-P, OP2-P, OP3-P (see Figure 5 ), the second partition wall layer L2 may include an inner side surface S-L2 (refer to Figure 5 ).

[0136] The first light emitting pattern EP1 and the first cathode CE1 may be arranged in the first partition wall opening OP1-P, the second light emitting pattern EP2 and the second cathode CE2 may be arranged in the second partition wall opening OP2-P, and the third light emitting pattern EP3 and the third cathode CE3 may be arranged in the third partition wall opening OP3-P.

[0137] In this embodiment, the first to third light-emitting patterns EP1, EP2, EP3 and the first to third cathodes CE1, CE2, CE3 can be formed in each light-emitting opening portion OP1-E, OP2-E, OP3-E or the partition wall opening portion OP1-P, OP2-P, OP3-P by being physically separated by the second partition wall layer L2 forming the tip portion.

[0138] According to the present invention, a plurality of first emission patterns EP1 can be patterned and evaporated in pixel units through the tip portion defined in the partition wall PW. That is, the first emission patterns EP1 can be formed collectively using an open mask, but can be easily divided in pixel units by the partition wall PW.

[0139] On the other hand, when the first light-emitting pattern EP1 is patterned using a fine metal mask (FMM), in order to support the fine metal mask, a supporting spacer protruding from the conductive partition wall needs to be provided. In addition, as the fine metal mask is separated from the substrate surface to be patterned by a height equivalent to the partition wall and the spacer, the realization of high resolution may be limited. In addition, as the fine metal mask contacts the spacer, foreign matter may remain in the spacer after the patterning process of the first light-emitting pattern EP1, or the spacer may be damaged due to scratching of the fine metal mask. As a result, a poor display panel may be formed.

[0140] According to this embodiment, by including the partition wall PW, the light emitting elements ED1, ED2, and ED3 can be easily physically separated, thereby preventing current leakage or driving errors between adjacent light emitting regions PXA-R, PXA-G, and PXA-B, and independently driving each light emitting element ED1, ED2, and ED3.

[0141] In particular, in the case where there is no Figure 1b ) is formed in contact with the inner part of the plurality of first light emitting patterns EP1, thereby providing a display panel DP with reduced defective rate and improved process reliability. Even if a separate supporting spacer protruding from the partition wall PW is not provided, patterning can be performed, thereby minimizing the area of ​​the light emitting regions PXA-R, PXA-G, and PXA-B, and further providing a display panel DP that can easily achieve high resolution.

[0142] In addition, when manufacturing a large-area display panel DP, by omitting the large-area mask production, the process cost can be reduced, and the adverse effects that may occur in the large-area mask can be avoided, so that a display panel DP with improved process reliability can be provided. The description of the plurality of first light emitting patterns EP1 can also be applied to the plurality of second and third light emitting patterns EP2 and EP3.

[0143] The thin film encapsulation layer TFE may include lower encapsulation inorganic patterns LIL1, LIL2, LIL3, an encapsulation organic film OL, and an upper encapsulation inorganic film UIL. In one embodiment, the lower encapsulation inorganic patterns LIL1, LIL2, LIL3 may include a first lower encapsulation inorganic pattern LIL1, a second lower encapsulation inorganic pattern LIL2, and a third lower encapsulation inorganic pattern LIL3. Each of the first to third lower encapsulation inorganic patterns LIL1, LIL2, LIL3 may correspond to the first to third light emitting openings OP1-E, OP2-E, OP3-E, respectively.

[0144] A portion of the first lower package inorganic pattern LIL1 may be formed inside the first partition wall opening OP1-P, and another portion of the first lower package inorganic pattern LIL1 may be formed on the partition wall PW. A portion of the second lower package inorganic pattern LIL2 may be formed inside the second partition wall opening OP2-P, and another portion of the second lower package inorganic pattern LIL2 may be formed on the partition wall PW. A portion of the third lower package inorganic pattern LIL3 may be formed inside the third partition wall opening OP3-P, and another portion of the third lower package inorganic pattern LIL3 may be formed on the partition wall PW. The first to third lower package inorganic patterns LIL1, LIL2, LIL3 may be provided in the form of patterns separated from each other.

[0145] Figure 7 FIG. 1 is a perspective view of a first partition wall layer L1 of a display panel according to a comparative example of the present invention. Figure 7 The first area A1 of each of the first to third partition wall openings OP1-P, OP2-P, and OP3-P is shown in FIG. Figure 5 ), first to third light emitting regions PXA-R, PXA-G, PXA-B and first to third cathodes CE1, CE2, CE3. For ease of explanation, Figure 7 In the figure, only the portions of the first to third cathodes CE1, CE2, CE3 in contact with the first partition wall layer L1 are shown by dotted lines.

[0146] Reference Figure 6 as well as Figure 7 Each of the first to third cathodes CE1, CE2, CE3 may be arranged on the first to third light emitting patterns EP1, EP2, EP3. Each of the first to third cathodes CE1, CE2, CE3 may be patterned by a tip portion defined in the partition wall PW, so that at least a portion of the first to third cathodes (hereinafter, cathodes) CE1, CE2, CE3 is arranged in the first to third partition wall openings OP1-P, OP2-P, OP3-P, and may contact the partition wall PW in the first to third partition wall openings (hereinafter, partition wall openings) OP1-P, OP2-P, OP3-P.

[0147] Due to the tip defined in the partition wall PW, a shadow area of ​​the partition wall PW may be formed. At this time, in the process of forming cathodes CE1, CE2, CE3, the area of ​​each cathode CE1, CE2, CE3 that contacts the partition wall PW may become smaller as it moves toward the corner of the partition wall opening OP1-P, OP2-P, OP3-P. As a result, the area of ​​the cathode CE1, CE2, CE3 that contacts the partition wall PW in the partition wall opening OP1-P, OP2-P, OP3-P may be reduced. When the contact area of ​​the cathode CE1, CE2, CE3 is formed to be less than the effective contact area (the minimum area that the cathode CE1, CE2, CE3 should contact the partition wall PW in order to make the light-emitting elements ED1, ED2, ED3 emit light), the light-emitting elements ED1, ED2, ED3 may not emit light, and the light-emitting elements ED1, ED2, ED3 may be defective.

[0148] Figure 8 is a display panel DP according to an embodiment of the present invention (refer to Figure 5 ) is a three-dimensional diagram of the first partition wall layer L1. For ease of explanation, Figure 8 The first area A1 of the partition wall opening OP-P is mainly shown.

[0149] Reference Figure 5 as well as Figure 8 The first region A1 of the first partition wall layer L1 may include a first inner side surface S1, a second inner side surface S2, a third inner side surface S3, and a fourth inner side surface S4. The first inner side surface S1, the second inner side surface S2, the third inner side surface S3, and the fourth inner side surface S4 may be Figure 5 The first inner side surface S1 and the third inner side surface S3 may extend in a direction parallel to the first direction DR1, and the second inner side surface S2 and the fourth inner side surface S4 may extend in a direction parallel to the second direction DR2.

[0150] In the present invention, the partition wall opening OP-P may include corner areas CA1, CA2, CA3, and CA4. The corner areas CA1, CA2, CA3, and CA4 may connect the first to fourth inner side surfaces S1, S2, S3, and S4, and may be formed by extending in a direction away from the center of the partition wall opening OP-P. The corner areas CA1, CA2, CA3, and CA4 may include a first corner area CA1, a second corner area CA2, a third corner area CA3, and a fourth corner area CA4. The first corner area CA1 may connect the first inner side surface S1 and the second inner side surface S2, and the second corner area CA2 may connect the second inner side surface S2 and the third inner side surface S3. The third corner area CA3 may connect the third inner side surface S3 and the fourth inner side surface S4, and the fourth corner area CA4 may connect the fourth inner side surface S4 and the first inner side surface S1.

[0151] Each of the first to fourth corner regions CA1, CA2, CA3, CA4 may include a plurality of sub-inner side surfaces. For example, the first to fourth corner regions CA1, CA2, CA3, CA4 may include first sub-inner side surfaces SS1-1, SS1-2, SS1-3, SS1-4, second sub-inner side surfaces SS2-1, SS2-2, SS2-3, SS2-4, third sub-inner side surfaces SS3-1, SS3-2, SS3-3, SS3-4, and fourth sub-inner side surfaces SS4-1, SS4-2, SS4-3, SS4-4.

[0152] In detail, the first corner area CA1 may include a first sub-inner side surface SS1-1, a second sub-inner side surface SS2-1, a third sub-inner side surface SS3-1, and a fourth sub-inner side surface SS4-1. The first sub-inner side surface SS1-1 may extend from the first inner side surface S1 along the second direction DR2, and the second sub-inner side surface SS2-1 may extend from the first sub-inner side surface SS1-1 along a direction parallel to the first direction DR1 (e.g., the opposite direction of the first direction DR1). The third sub-inner side surface SS3-1 may extend from the second sub-inner side surface SS2-1 along a direction parallel to the second direction DR2 (e.g., the opposite direction of the second direction DR2), and the fourth sub-inner side surface SS4-1 may extend from the third sub-inner side surface SS3-1 along the first direction DR1. The fourth sub-inner side surface SS4-1 may be connected to the second inner side surface S2.

[0153] When observed on a plane, in the polygon defined by the first area A1, the inner angle formed by the first sub-inner side surface SS1-1 and the first inner side surface S1 of the first corner area CA1 may be greater than 180 degrees, and the inner angle formed by the fourth sub-inner side surface SS4-1 and the second inner side surface S2 of the first corner area CA1 may be greater than 180 degrees. For example, the inner angle formed by the first sub-inner side surface SS1-1 and the first inner side surface S1 of the first corner area CA1, and the inner angle formed by the fourth sub-inner side surface SS4-1 and the second inner side surface S2 of the first corner area CA1 may be 270 degrees. Thereafter, in Figure 8 The description of the internal angles is described with reference to the polygon.

[0154] In addition, the interior angle formed by the first sub-inner side surface SS1-1 and the second sub-inner side surface SS2-1 of the first corner area CA1 can be 90 degrees, the interior angle formed by the second sub-inner side surface SS2-1 and the third sub-inner side surface SS3-1 of the first corner area CA1 can be 90 degrees, and the interior angle formed by the third sub-inner side surface SS3-1 and the fourth sub-inner side surface SS4-1 of the first corner area CA1 can be 90 degrees. However, the interior angle formed by the first sub-inner side surface SS1-1, the second sub-inner side surface SS2-1, the third sub-inner side surface SS3-1 and the fourth sub-inner side surface SS4-1 is an exemplary case and is not limited to the example.

[0155] The second corner area CA2 may include a first sub-inner side surface SS1-2, a second sub-inner side surface SS2-2, a third sub-inner side surface SS3-2, and a fourth sub-inner side surface SS4-2. The first sub-inner side surface SS1-2 may extend from the second inner side surface S2 in a direction parallel to the first direction DR1 (e.g., the opposite direction of the first direction DR1), and the second sub-inner side surface SS2-2 may extend from the first sub-inner side surface SS1-2 in a direction parallel to the second direction DR2 (e.g., the opposite direction of the second direction DR2). The third sub-inner side surface SS3-2 may extend from the second sub-inner side surface SS2-2 in the first direction DR1, and the fourth sub-inner side surface SS4-2 may extend from the third sub-inner side surface SS3-2 in the second direction DR2.

[0156] The fourth sub-inner side surface SS4 - 2 may be connected to the third inner side surface S3 .

[0157] The inner angle formed by the first sub-inner side surface SS1-2 and the second inner side surface S2 of the second corner area CA2 may be greater than 180 degrees, and the inner angle formed by the fourth sub-inner side surface SS4-2 and the third inner side surface S3 of the second corner area CA2 may be greater than 180 degrees. For example, the inner angle formed by the first sub-inner side surface SS1-2 and the second inner side surface S2 of the second corner area CA2, and the inner angle formed by the fourth sub-inner side surface SS4-2 and the third inner side surface S3 of the second corner area CA2 may be 270 degrees.

[0158] In addition, the interior angle formed by the first sub-inner side surface SS1-2 and the second sub-inner side surface SS2-2 of the second corner area CA2 can be 90 degrees, the interior angle formed by the second sub-inner side surface SS2-2 and the third sub-inner side surface SS3-2 of the second corner area CA2 can be 90 degrees, and the interior angle formed by the third sub-inner side surface SS3-2 and the fourth sub-inner side surface SS4-2 of the second corner area CA2 can be 90 degrees. However, the interior angle formed by the first sub-inner side surface SS1-2, the second sub-inner side surface SS2-2, the third sub-inner side surface SS3-2 and the fourth sub-inner side surface SS4-2 is an exemplary case, and is not limited to the example.

[0159] The third corner area CA3 may include a first sub-inner side surface SS1-3, a second sub-inner side surface SS2-3, a third sub-inner side surface SS3-3, and a fourth sub-inner side surface SS4-3. The first sub-inner side surface SS1-3 may extend from the third inner side surface S3 in a direction parallel to the second direction DR2 (e.g., the opposite direction of the second direction DR2), and the second sub-inner side surface SS2-3 may extend from the first sub-inner side surface SS1-3 in the first direction DR1. The third sub-inner side surface SS3-3 may extend from the second sub-inner side surface SS2-3 in the second direction DR2, and the fourth sub-inner side surface SS4-3 may extend from the third sub-inner side surface SS3-3 in a direction parallel to the first direction DR1 (e.g., the opposite direction of the first direction DR1). The fourth sub-inner side surface SS4-3 may be connected to the fourth inner side surface S4.

[0160] The inner angle formed by the first sub-inner side surface SS1-3 and the third inner side surface S3 of the third corner area CA3 may be greater than 180 degrees, and the inner angle formed by the fourth sub-inner side surface SS4-3 and the fourth inner side surface S4 of the third corner area CA3 may be greater than 180 degrees. For example, the inner angle formed by the first sub-inner side surface SS1-3 and the third inner side surface S3 of the third corner area CA3, and the inner angle formed by the fourth sub-inner side surface SS4-3 and the fourth inner side surface S4 of the third corner area CA3 may be 270 degrees.

[0161] In addition, the interior angle formed by the first sub-inner side surface SS1-3 and the second sub-inner side surface SS2-3 of the third corner area CA3 can be 90 degrees, the interior angle formed by the second sub-inner side surface SS2-3 and the third sub-inner side surface SS3-3 of the third corner area CA3 can be 90 degrees, and the interior angle formed by the third sub-inner side surface SS3-3 and the fourth sub-inner side surface SS4-3 of the third corner area CA3 can be 90 degrees. However, the interior angle formed by the first sub-inner side surface SS1-3, the second sub-inner side surface SS2-3, the third sub-inner side surface SS3-3 and the fourth sub-inner side surface SS4-3 is an exemplary case, and is not limited to the example.

[0162] The fourth corner area CA4 may include a first sub-inner side surface SS1-4, a second sub-inner side surface SS2-4, a third sub-inner side surface SS3-4, and a fourth sub-inner side surface SS4-4. The first sub-inner side surface SS1-4 may extend from the fourth inner side surface S4 along the first direction DR1, and the second sub-inner side surface SS2-4 may extend from the first sub-inner side surface SS1-4 along the second direction DR2. The third sub-inner side surface SS3-4 may extend from the second sub-inner side surface SS2-4 along a direction parallel to the first direction DR1 (e.g., the opposite direction of the first direction DR1), and the fourth sub-inner side surface SS4-4 may extend from the third sub-inner side surface SS3-4 along a direction parallel to the second direction DR2 (e.g., the opposite direction of the second direction DR2). The fourth sub-inner side surface SS4-4 may be connected to the first inner side surface S1.

[0163] The inner angle formed by the first sub-inner side surface SS1-4 and the fourth inner side surface S4 of the fourth corner area CA4 may be greater than 180 degrees, and the inner angle formed by the fourth sub-inner side surface SS4-4 and the first inner side surface S1 of the fourth corner area CA4 may be greater than 180 degrees. For example, the inner angle formed by the first sub-inner side surface SS1-4 and the fourth inner side surface S4 of the fourth corner area CA4, and the inner angle formed by the fourth sub-inner side surface SS4-4 and the first inner side surface S1 of the fourth corner area CA4 may be 270 degrees.

[0164] In addition, the interior angle formed by the first sub-inner side surface SS1-4 and the second sub-inner side surface SS2-4 of the fourth corner area CA4 can be 90 degrees, the interior angle formed by the second sub-inner side surface SS2-4 and the third sub-inner side surface SS3-4 of the fourth corner area CA4 can be 90 degrees, and the interior angle formed by the third sub-inner side surface SS3-4 and the fourth sub-inner side surface SS4-4 of the fourth corner area CA4 can be 90 degrees. However, the interior angle formed by the first sub-inner side surface SS1-4, the second sub-inner side surface SS2-4, the third sub-inner side surface SS3-4 and the fourth sub-inner side surface SS4-4 is an exemplary case, and is not limited to the example.

[0165] The interior angle formed by the first inner side surface S1 and at least one of the multiple sub-inner side surfaces adjacent to the first inner side surface S1 can be more than 180 degrees. For example, the interior angle formed by the first inner side surface S1 and the first sub-inner side surface SS1-1 can be more than 180 degrees, and the interior angle formed by the first inner side surface S1 and the fourth sub-inner side surface SS4-4 can be more than 180 degrees. The interior angle formed by the second inner side surface S2 and at least one of the multiple sub-inner side surfaces adjacent to the second inner side surface S2 can be more than 180 degrees. For example, the interior angle formed by the second inner side surface S2 and the first sub-inner side surface SS1-2 can be more than 180 degrees, and the interior angle formed by the second inner side surface S2 and the fourth sub-inner side surface SS4-1 can be more than 180 degrees. The interior angle formed by the third inner side surface S3 and at least one of the multiple sub-inner side surfaces adjacent to the third inner side surface S3 can be more than 180 degrees. For example, the interior angle formed by the third inner side surface S3 and the first sub-inner side surface SS1-3 can be more than 180 degrees, and the interior angle formed by the third inner side surface S3 and the fourth sub-inner side surface SS4-2 can be more than 180 degrees. The interior angle formed by the fourth inner side surface S4 and at least one sub-inner side surface in a plurality of sub-inner side surfaces adjacent to the fourth inner side surface S4 can be more than 180 degrees. For example, the interior angle formed by the fourth inner side surface S4 and the first sub-inner side surface SS1-4 can be more than 180 degrees, and the interior angle formed by the fourth inner side surface S4 and the fourth sub-inner side surface SS4-3 can be more than 180 degrees.

[0166] Fig. 9 is a display panel DP according to an embodiment of the present invention (refer to Figure 5 ) is a three-dimensional diagram of the first partition wall layer L1a. For ease of explanation, Fig. 9 The first area A1a of the partition wall opening OP-Pa is mainly shown. Fig. 9 When, refer to Figure 8 The following description will be given, and descriptions of the same reference numerals will be omitted.

[0167] Reference Figure 5 , Figure 8 as well as Fig. 9 The first region A1a of the first partition wall layer L1a may include a first inner side surface S1, a second inner side surface S2, a third inner side surface S3, a fourth inner side surface S4, a first corner region CA1, a second corner region CA2, a third corner region CA3, and a fourth corner region CA4.

[0168] It can be, in Figure 8 as well as Fig. 9In the embodiment, the distance between the first corner area CA1 and the fourth corner area CA4 is defined as the first distance (D1 or D1a), and the distance between the first corner area CA1 and the second corner area CA2 is defined as the second distance (D2 or D2a). The first distance (D1 or D1a) may correspond to the distance between the second corner area CA2 and the third corner area CA3, and the second distance (D2 or D2a) may correspond to the distance between the third corner area CA3 and the fourth corner area CA4.

[0169] Fig. 9 The first distance D1a may be less than Figure 8 The first distance D1, Fig. 9 The second distance D2a may be less than Figure 8 The second distance D2. That is, Fig. 9 The size of each of the first to fourth corner areas CA1, CA2, CA3, CA4 may be greater than Figure 8 The size of each of the first to fourth corner areas CA1, CA2, CA3, CA4.

[0170] Fig.10 is a display panel DP according to an embodiment of the present invention (refer to Figure 5 ) is a three-dimensional diagram of the first partition wall layer L1b. For ease of explanation, Fig.10 The first area A1b of the partition wall opening OP-Pb is mainly shown. Fig.10 When, refer to Figure 8 The following description will be given, and descriptions of the same reference numerals will be omitted.

[0171] Reference Figure 5 , Figure 8 as well as Fig.10 , the first area A1b of the first partition wall layer L1b may include a first inner side surface S1, a second inner side surface S2, a third inner side surface S3, and a fourth inner side surface S4, and may include a first corner area CA1a, a second corner area CA2a, a third corner area CA3a, and a fourth corner area CA4a. The first corner area CA1a may connect the first inner side surface S1 and the second inner side surface S2, the second corner area CA2a may connect the second inner side surface S2 and the third inner side surface S3. The third corner area CA3a may connect the third inner side surface S3 and the fourth inner side surface S4, and the fourth corner area CA4a may connect the fourth inner side surface S4 and the first inner side surface S1.

[0172] Each of the first to fourth corner areas CA1a, CA2a, CA3a, CA4a may include a plurality of sub-inner side surfaces. For example, the first to fourth corner areas CA1a, CA2a, CA3a, CA4a may include a first sub-inner side surface SS1-1a, SS1-2a, SS1-3a, SS1-4a, a second sub-inner side surface SS2-1a, SS2-2a, SS2-3a, SS2-4a, and a third sub-inner side surface SS3-1a, SS3-2a, SS3-3a, SS3-4a.

[0173] In detail, the first corner area CA1a may include a first sub-inner side surface SS1-1a, a second sub-inner side surface SS2-1a, and a third sub-inner side surface SS3-1a. The first sub-inner side surface SS1-1a may extend from the first inner side surface S1 in a direction opposite to the first direction DR1 and intersected by the second direction DR2. The second sub-inner side surface SS2-1a may extend from the first sub-inner side surface SS1-1a in a direction opposite to the first direction DR1 and intersected by the second direction DR2. The third sub-inner side surface SS3-1a may extend from the second sub-inner side surface SS2-1a in a direction opposite to the first direction DR1 and intersected by the second direction DR2. The third sub-inner side surface SS3-1a may be connected to the second inner side surface S2.

[0174] When observed on a plane, in the polygon defined by the first area A1b, the inner angle formed by the first sub-inner side surface SS1-1a and the first inner side surface S1 of the first corner area CA1a can be greater than 180 degrees, and the inner angle formed by the third sub-inner side surface SS3-1a and the second inner side surface S2 of the first corner area CA1a can be greater than 180 degrees. For example, the inner angle formed by the first sub-inner side surface SS1-1a and the first inner side surface S1 of the first corner area CA1a, and the inner angle formed by the third sub-inner side surface SS3-1a and the second inner side surface S2 of the first corner area CA1a can be 225 degrees. Thereafter, in Fig.10 The description of the internal angles is described with reference to the polygon.

[0175] In addition, the inner angle formed by the first sub-inner side surface SS1-1a and the second sub-inner side surface SS2-1a of the first corner area CA1a can be 90 degrees, and the inner angle formed by the second sub-inner side surface SS2-1a and the third sub-inner side surface SS3-1a of the first corner area CA1a can be 90 degrees. However, the inner angle formed by the first sub-inner side surface SS1-1a, the second sub-inner side surface SS2-1 and the third sub-inner side surface SS3-1 is an exemplary case and is not limited to the example.

[0176] The second corner area CA2a may include a first sub-inner side surface SS1-2a, a second sub-inner side surface SS2-2a, and a third sub-inner side surface SS3-2a. The first sub-inner side surface SS1-2a may extend from the second inner side surface S2 in a direction intersected by the opposite direction of the first direction DR1 and the opposite direction of the second direction DR2. The second sub-inner side surface SS2-2a may extend from the first sub-inner side surface SS1-2a in a direction intersected by the opposite direction of the first direction DR1 and the second direction DR2. The third sub-inner side surface SS3-2a may extend from the second sub-inner side surface SS2-2a in a direction intersected by the first direction DR1 and the second direction DR2. The third sub-inner side surface SS3-2a may be connected to the third inner side surface S3.

[0177] The inner angle formed by the first sub-inner side surface SS1-2a and the second inner side surface S2 of the second corner area CA2a may be greater than 180 degrees, and the inner angle formed by the third sub-inner side surface SS3-2a and the third inner side surface S3 of the second corner area CA2a may be greater than 180 degrees. For example, the inner angle formed by the first sub-inner side surface SS1-2a and the second inner side surface S2 of the second corner area CA2a, and the inner angle formed by the third sub-inner side surface SS3-2a and the third inner side surface S3 of the second corner area CA2a may be 225 degrees.

[0178] In addition, the interior angle formed by the first sub-inner side surface SS1-2a and the second sub-inner side surface SS2-2a of the second corner area CA2a can be 90 degrees, and the interior angle formed by the second sub-inner side surface SS2-2a and the third sub-inner side surface SS3-2a of the second corner area CA2a can be 90 degrees. However, the interior angle formed by the first sub-inner side surface SS1-2a, the second sub-inner side surface SS2-2a and the third sub-inner side surface SS3-2a is an exemplary case and is not limited to the example.

[0179] The third corner area CA3a may include a first sub-inner side surface SS1-3a, a second sub-inner side surface SS2-3a, and a third sub-inner side surface SS3-3a. The first sub-inner side surface SS1-3 may extend from the third inner side surface S3 in the direction intersected by the opposite direction of the first direction DR1 and the second direction DR2. The second sub-inner side surface SS2-3a may extend from the first sub-inner side surface SS1-3a in the direction intersected by the first direction DR1 and the second direction DR2. The third sub-inner side surface SS3-3a may extend from the second sub-inner side surface SS2-3a in the direction intersected by the opposite direction of the first direction DR1 and the second direction DR2. The third sub-inner side surface SS3-3a may be connected to the fourth inner side surface S4.

[0180] The inner angle formed by the first sub-inner side surface SS1-3a and the third inner side surface S3 of the third corner area CA3a can be more than 180 degrees, and the inner angle formed by the third sub-inner side surface SS3-3a and the fourth inner side surface S4 of the third corner area CA3a can be more than 180 degrees. For example, the inner angle formed by the first sub-inner side surface SS1-3a and the third inner side surface S3 of the third corner area CA3a, and the inner angle formed by the third sub-inner side surface SS3-3a and the fourth inner side surface S4 of the third corner area CA3a can be 225 degrees.

[0181] In addition, the interior angle formed by the first sub-inner side surface SS1-3a and the second sub-inner side surface SS2-3a of the third corner area CA3a can be 90 degrees, and the interior angle formed by the second sub-inner side surface SS2-3a and the third sub-inner side surface SS3-3a of the third corner area CA3a can be 90 degrees. However, the interior angle formed by the first sub-inner side surface SS1-3a, the second sub-inner side surface SS2-3a and the third sub-inner side surface SS3-3a is an exemplary case and is not limited to the example.

[0182] The fourth corner area CA4a may include a first sub-inner side surface SS1-4a, a second sub-inner side surface SS2-4a, and a third sub-inner side surface SS3-4a. The first sub-inner side surface SS1-4a may extend from the fourth inner side surface S4 in a direction intersected by the first direction DR1 and the second direction DR2. The second sub-inner side surface SS2-4a may extend from the first sub-inner side surface SS1-4a in a direction intersected by the second direction DR2 in the opposite direction of the first direction DR1. The third sub-inner side surface SS3-4a may extend from the second sub-inner side surface SS2-4a in a direction intersected by the opposite direction of the first direction DR1 and the opposite direction of the second direction DR2. The third sub-inner side surface SS3-4a may be connected to the first inner side surface S1.

[0183] The inner angle formed by the first sub-inner side surface SS1-4a and the fourth inner side surface S4 of the fourth corner area CA4a can be more than 180 degrees, and the inner angle formed by the third sub-inner side surface SS3-4a and the first inner side surface S1 of the fourth corner area CA4a can be more than 180 degrees. For example, the inner angle formed by the first sub-inner side surface SS1-4a and the fourth inner side surface S4 of the fourth corner area CA4a, and the inner angle formed by the third sub-inner side surface SS3-4a and the first inner side surface S1 of the fourth corner area CA4a can be 225 degrees.

[0184] In addition, the interior angle formed by the first sub-inner side surface SS1-4a and the second sub-inner side surface SS2-4a of the fourth corner area CA4a can be 90 degrees, and the interior angle formed by the second sub-inner side surface SS2-4a and the third sub-inner side surface SS3-4a of the fourth corner area CA4a can be 90 degrees. However, the interior angle formed by the first sub-inner side surface SS1-4a, the second sub-inner side surface SS2-4a and the third sub-inner side surface SS3-4a is an exemplary case and is not limited to the example.

[0185] Fig.11 is a display panel DP according to an embodiment of the present invention (refer to Figure 5 ) is a three-dimensional diagram of the first partition wall layer L1c. For ease of explanation, Fig.11 The first area A1c of the partition wall opening OP-Pc is mainly shown. Fig.11 When, refer to Fig.10 The following description will be given, and descriptions of the same reference numerals will be omitted.

[0186] Reference Figure 5 , Fig.10 as well as Fig.11 The first region A1c of the first partition wall layer L1c may include first, second, third, and fourth inner side surfaces S1a, S2a, S3a, and S4a, and may include first, second, third, and fourth corner regions CA1a, CA2a, CA3a, and CA4a.

[0187] The first inner side surface S1a, the second inner side surface S2a, the third inner side surface S3a and the fourth inner side surface S4a may be Figure 5 The first inner side surface S1a and the third inner side surface S3a may extend in parallel with the first direction DR1, and the second inner side surface S2a and the fourth inner side surface S4a may extend in parallel with the second direction DR2.

[0188] Each of the first inner side surface S1a, the second inner side surface S2a, the third inner side surface S3a, and the fourth inner side surface S4a may include a plurality of sub-inner side surfaces including protruding areas P1, P2, P3, and P4. For example, the first inner side surface S1a may include a first protruding area P1, the second inner side surface S2a may include a second protruding area P2, the third inner side surface S3a may include a third protruding area P3, and the fourth inner side surface S4a may include a fourth protruding area P4.

[0189] Multiple sub-inner side surfaces of each of the protruding areas P1, P2, P3, and P4 may extend in a direction away from the center of the partition wall opening OP-Pc. For example, multiple sub-inner side surfaces of the first to fourth protruding areas P1, P2, P3, and P4 may extend in a direction intersecting the first direction DR1 and the second direction DR2 or in a direction intersecting the second direction DR2 in the opposite direction of the first direction DR1. Each of the first protruding area P1 and the third protruding area P3 may include an inner side surface extending in a direction intersecting the first direction DR1 and the second direction DR2 and an inner side surface extending in a direction intersecting the second direction DR1 and the second direction DR2 in the opposite direction. Each of the second protruding area P2 and the fourth protruding area P4 may include three inner side surfaces extending in a direction intersecting the first direction DR1 and the second direction DR2 and three inner side surfaces extending in a direction intersecting the second direction DR2 in the opposite direction of the first direction DR1. However, Fig.11 The shapes of the first to fourth protruding regions P1 , P2 , P3 , and P4 , that is, the number and directions of the plurality of inner side surfaces are exemplary and are not limited thereto.

[0190] The first corner area CA1a may connect the first inner side surface S1a and the second inner side surface S2a, the second corner area CA2a may connect the second inner side surface S2a and the third inner side surface S3a, the third corner area CA3a may connect the third inner side surface S3a and the fourth inner side surface S4a, and the fourth corner area CA4a may connect the fourth inner side surface S4a and the first inner side surface S1a. Fig.11 The first to fourth corner areas CA1a, CA2a, CA3a, CA4a can be Fig.10 The first to fourth corner areas CA1a, CA2a, CA3a, CA4a are substantially similar. However, this is not limited to this. Fig.11 The first to fourth corner areas CA1a, CA2a, CA3a, CA4a may have Figure 8 as well as Fig. 9 The first to fourth corner areas CA1, CA2, CA3, CA4, Fig.13 The first to fourth corner areas CA1b, CA2b, CA3b, CA4b or Fig.14 The shapes of the first to fourth corner areas CA1c, CA2c, CA3c, and CA4c.

[0191] Fig.12 is a display panel DP according to an embodiment of the present invention (refer to Figure 5 ) is a three-dimensional diagram of the first partition wall layer L1d. For ease of explanation, Fig.12 The first area A1d of the partition wall opening OP-Pd is mainly shown. Fig.12 When, refer to Fig.10 The following description will be given, and descriptions of the same reference numerals will be omitted.

[0192] Reference Figure 5 , Fig.10 as well as Fig.12 The first region A1d of the first partition wall layer L1d may include a second inner side surface S2, a fourth inner side surface S4, a first corner region CA1a, a second corner region CA2a, a third corner region CA3a, and a fourth corner region CA4a.

[0193] It can be, in Fig.10 The distance between the first corner area CA1a and the fourth corner area CA4a is defined as a first distance D1b. Fig.10 as well as Fig.12 In the embodiment, the distance between the first corner area CA1a and the second corner area CA2a is defined as a second distance (D2b or D2c). Fig.10 The first distance D1b can be Fig.10 The distance between the second corner area CA2a and the third corner area CA3a corresponds to the distance between the second corner area CA2a and the third corner area CA3a. Fig.10 as well as Fig.12 The second distance (D2b or D2c) can be Fig.10 as well as Fig.12 The distance between the third corner area CA3a and the fourth corner area CA4a corresponds to the distance between the third corner area CA3a and the fourth corner area CA4a.

[0194] Fig.12 The first corner area CA1a and the fourth corner area CA4a may be formed in contact with each other. That is, the distance between the first corner area CA1a and the fourth corner area CA4a may be 0. Fig.12 The distance between the first corner area CA1a and the fourth corner area CA4a may be less than Fig.10 In addition, Fig.12 The second distance D2c may be less than Fig.10 That is, Fig.12 The size of each of the first to fourth corner areas CA1a, CA2a, CA3a, CA4a may be greater than Fig.10 The size of each of the first to fourth corner areas CA1a, CA2a, CA3a, and CA4a.

[0195] Fig.13 is a display panel DP according to an embodiment of the present invention (refer to Figure 5 ) is a three-dimensional diagram of the first partition wall layer L1e. For ease of explanation, Fig.13 The first area A1e of the partition wall opening OP-Pe is mainly shown. Fig.13 When, refer to Figure 8 The following description will be given, and descriptions of the same reference numerals will be omitted.

[0196] Reference Figure 5 , Figure 8 as well as Fig.13 , the first area A1e of the first partition wall layer L1e may include a first inner side surface S1, a second inner side surface S2, a third inner side surface S3, and a fourth inner side surface S4, and may include a first corner area CA1b, a second corner area CA2b, a third corner area CA3b, and a fourth corner area CA4b. The first corner area CA1b may connect the first inner side surface S1 and the second inner side surface S2, the second corner area CA2b may connect the second inner side surface S2 and the third inner side surface S3. The third corner area CA3b may connect the third inner side surface S3 and the fourth inner side surface S4, and the fourth corner area CA4b may connect the fourth inner side surface S4 and the first inner side surface S1.

[0197] Each of the first to fourth corner areas CA1b, CA2b, CA3b, CA4b may have a partial shape of a circle. For example, on a plane, the first corner area CA1b may be an arc shape connecting the first inner side surface S1 and the second inner side surface S2. On a plane, the second corner area CA2b may be an arc shape connecting the second inner side surface S2 and the third inner side surface S3. On a plane, the third corner area CA3b may be an arc shape connecting the third inner side surface S3 and the fourth inner side surface S4. The fourth corner area CA4b may be an arc shape connecting the fourth inner side surface S4 and the first inner side surface S1.

[0198] Fig.14 is a display panel DP according to an embodiment of the present invention (refer to Figure 5 ) is a three-dimensional diagram of the first partition wall layer L1f. For ease of explanation, Fig.14 The first area A1f of the partition wall opening OP-Pf is mainly shown. Fig.14 When, refer to Figure 8 The following description will be given, and descriptions of the same reference numerals will be omitted.

[0199] Reference Figure 5 , Figure 8 as well as Fig.14The first region A1f of the first partition wall layer L1f may include a first inner side surface S1, a second inner side surface S2, a third inner side surface S3, and a fourth inner side surface S4, and may include a first corner region CA1c, a second corner region CA2c, a third corner region CA3c, and a fourth corner region CA4c. The first corner region CA1c may connect the first inner side surface S1 and the second inner side surface S2, the second corner region CA2c may connect the second inner side surface S2 and the third inner side surface S3. The third corner region CA3c may connect the third inner side surface S3 and the fourth inner side surface S4, and the fourth corner region CA4c may connect the fourth inner side surface S4 and the first inner side surface S1.

[0200] Each of the first to fourth corner areas CA1c, CA2c, CA3c, CA4c may include a plurality of sub-inner side surfaces. For example, the first to fourth corner areas CA1c, CA2c, CA3c, CA4c may include first sub-inner side surfaces SS1-1b, SS1-2b, SS1-3b, SS1-4b and second sub-inner side surfaces SS2-1b, SS2-2b, SS2-3b, SS2-4b.

[0201] In detail, the first corner area CA1c may include a first sub-inner side surface SS1-1b and a second sub-inner side surface SS2-1b. The first sub-inner side surface SS1-1b may extend from the first inner side surface S1 in a direction opposite to the first direction DR1 and intersected by the second direction DR2. The second sub-inner side surface SS2-1b may extend from the first sub-inner side surface SS1-1b in a direction opposite to the first direction DR1 and intersected by the second direction DR2. The second sub-inner side surface SS2-1b may be connected to the second inner side surface S2.

[0202] When observed on a plane, in the polygon defined by the first area A1f, the inner angle formed by the first sub-inner side surface SS1-1b and the first inner side surface S1 of the first corner area CA1c can be greater than 180 degrees, and the inner angle formed by the second sub-inner side surface SS2-1b and the second inner side surface S2 of the first corner area CA1c can be greater than 180 degrees. In addition, the inner angle formed by the first sub-inner side surface SS1-1b and the second sub-inner side surface SS2-1b of the first corner area CA1c can be less than 90 degrees. However, the inner angle formed by the first sub-inner side surface SS1-1b and the second sub-inner side surface SS2-1b is an exemplary case and is not limited to the example. Thereafter, in Fig.14 The description of the internal angles is described with reference to the polygon.

[0203] The second corner area CA2c may include a first sub-inner side surface SS1-2b and a second sub-inner side surface SS2-2b. The first sub-inner side surface SS1-2b may extend from the second inner side surface S2 in a direction opposite to the first direction DR1 and in a direction opposite to the second direction DR2 intersecting. The second sub-inner side surface SS2-2b may extend from the first sub-inner side surface SS1-2b in a direction intersecting the first direction DR1 and the second direction DR2 intersecting. The second sub-inner side surface SS2-2b may be connected to the third inner side surface S3.

[0204] The interior angle formed by the first sub-inner side surface SS1-2b and the second inner side surface S2 of the second corner area CA2c can be more than 180 degrees, and the interior angle formed by the second sub-inner side surface SS2-2b and the third inner side surface S3 of the second corner area CA2c can be more than 180 degrees. In addition, the interior angle formed by the first sub-inner side surface SS1-2b and the second sub-inner side surface SS2-2b of the second corner area CA2c can be less than 90 degrees. However, the interior angle formed by the first sub-inner side surface SS1-2b and the second sub-inner side surface SS2-2b is an exemplary case, not limited to the example.

[0205] The third corner area CA3c may include a first sub-inner side surface SS1-3b and a second sub-inner side surface SS2-3b. The first sub-inner side surface SS1-3b may extend from the third inner side surface S3 in a direction intersected by the first direction DR1 and the opposite direction of the second direction DR2. The second sub-inner side surface SS2-3b may extend from the first sub-inner side surface SS1-3b in a direction intersected by the second direction DR2 in the opposite direction of the first direction DR1. The second sub-inner side surface SS2-3b may be connected to the fourth inner side surface S4.

[0206] The interior angle formed by the first sub-inner side surface SS1-3b and the third inner side surface S3 of the third corner area CA3c can be more than 180 degrees, and the interior angle formed by the second sub-inner side surface SS2-3b and the fourth inner side surface S4 of the third corner area CA3c can be more than 180 degrees. In addition, the interior angle formed by the first sub-inner side surface SS1-3b and the second sub-inner side surface SS2-3b of the third corner area CA3c can be less than 90 degrees. However, the interior angle formed by the first sub-inner side surface SS1-3b and the second sub-inner side surface SS2-3b is an exemplary case, not limited to the example.

[0207] The fourth corner area CA4c may include a first sub-inner side surface SS1-4b and a second sub-inner side surface SS2-4b. The first sub-inner side surface SS1-4b may extend from the fourth inner side surface S4 in a direction intersected by the first direction DR1 and the second direction DR2. The second sub-inner side surface SS2-4b may extend from the first sub-inner side surface SS1-4b in a direction intersected by the opposite direction of the first direction DR1 and the opposite direction of the second direction DR2. The second sub-inner side surface SS2-4b may be connected to the first inner side surface S1.

[0208] The interior angle formed by the first sub-inner side surface SS1-4b and the fourth inner side surface S4 of the fourth corner area CA4c can be more than 180 degrees, and the interior angle formed by the second sub-inner side surface SS2-4b and the first inner side surface S1 of the fourth corner area CA4c can be more than 180 degrees. In addition, the interior angle formed by the first sub-inner side surface SS1-4b and the second sub-inner side surface SS2-4b of the fourth corner area CA4c can be less than 90 degrees. However, the interior angle formed by the first sub-inner side surface SS1-4b and the second sub-inner side surface SS2-4b is an exemplary case, not limited to the example.

[0209] Reference Figure 6 , Figures 8 to 14 The partition wall openings OP1-P, OP2-P, and OP3-P of the present invention may also include extended corner regions. Thus, even if a shadow region is formed in the partition wall PW, the contact area of ​​the cathodes CE1, CE2, and CE3 will be formed to be larger than the effective contact area, thereby reducing or eliminating defects in the light-emitting elements ED1, ED2, and ED3.

[0210] The above description is made with reference to the preferred embodiments of the present invention, but it is understood by those skilled in the art or those with general knowledge in the technical field that various modifications and changes can be made to the present invention without exceeding the scope of the concept and technical field of the present invention recorded in the attached claims. Therefore, the technical scope of the present invention is not limited by the contents recorded in the detailed description of the specification, but is determined only by the claims.

Claims

1. A display panel, wherein: include: Basal layer; A pixel defining film is disposed on the base layer and has a light emitting opening; A partition wall is disposed on the pixel defining film and has a partition wall opening portion overlapping the light emitting opening portion; as well as A light emitting element comprising an anode, an intermediate layer, and a cathode in contact with the partition wall, The partition wall opening comprises: The first inner side surface and the third inner side surface extend in a direction parallel to the first direction; The second inner side surface and the fourth inner side surface extend in a direction parallel to a second direction intersecting the first direction; a first corner region connecting the first inner side surface and the second inner side surface; a second corner region connecting the second inner side surface and the third inner side surface; A third corner region connecting the third inner side surface and the fourth inner side surface; and A fourth corner area connects the fourth inner side surface and the first inner side surface.

2. The display panel according to claim 1, wherein: Each of the first to fourth corner regions includes a plurality of sub-inner side surfaces, and an inner angle formed by the first inner side surface and at least one of the plurality of sub-inner side surfaces adjacent to the first inner side surface is greater than 180 degrees.

3. The display panel according to claim 1, wherein: On a plane, the first corner area is in an arc shape connecting the first inner side surface and the second inner side surface.

4. The display panel according to claim 1, wherein: The first corner area includes: a first sub-inner side surface extending from the first inner side surface; and The second sub-inner side surface extends from the first sub-inner side surface and is connected to the second inner side surface.

5. The display panel according to claim 4, wherein: An inner angle formed by the first sub-inner side surface and the first inner side surface is greater than 180 degrees, and an inner angle formed by the second sub-inner side surface and the second inner side surface is greater than 180 degrees.

6. The display panel according to claim 1, wherein: The first corner area includes: a first sub-inner side surface extending from the first inner side surface; a second sub-inner side surface extending from the first sub-inner side surface; and The third sub-inner side surface extends from the second sub-inner side surface and is connected to the second inner side surface.

7. The display panel according to claim 6, wherein: An inner angle formed by the first sub-inner side surface and the first inner side surface is greater than 180 degrees, and an inner angle formed by the third sub-inner side surface and the second inner side surface is greater than 180 degrees.

8. The display panel according to claim 6, wherein: An inner angle formed by the first sub-inner side surface and the second sub-inner side surface is 90 degrees, and an inner angle formed by the second sub-inner side surface and the third sub-inner side surface is 90 degrees.

9. The display panel according to claim 1, wherein: The first corner area includes: a first sub-inner side surface extending from the first inner side surface; a second sub-inner side surface extending from the first sub-inner side surface; a third sub-inner side surface extending from the second sub-inner side surface; and The fourth sub-inner side surface extends from the third sub-inner side surface and is connected to the second inner side surface.

10. The display panel according to claim 9, wherein: An inner angle formed by the first sub-inner side surface and the first inner side surface is greater than 180 degrees, and an inner angle formed by the fourth sub-inner side surface and the second inner side surface is greater than 180 degrees.

11. The display panel according to claim 9, wherein: An inner angle formed by the first sub-inner side surface and the second sub-inner side surface is 90 degrees, an inner angle formed by the second sub-inner side surface and the third sub-inner side surface is 90 degrees, and an inner angle formed by the third sub-inner side surface and the fourth sub-inner side surface is 90 degrees.

12. The display panel according to claim 1, wherein: Each of the first to fourth inner side surfaces includes a protruding area having a plurality of sub-inner side surfaces extending in a direction away from a center of the partition wall opening.

13. A display panel, wherein: include: Basal layer; A pixel defining film is disposed on the base layer and has a light emitting opening; A partition wall is disposed on the pixel defining film and has a partition wall opening portion overlapping the light emitting opening portion; as well as A light emitting element comprising an anode, an intermediate layer, and a cathode in contact with the partition wall, The partition wall opening comprises: The first inner side surface and the third inner side surface extend in a direction parallel to the first direction; The second inner side surface and the fourth inner side surface extend in a direction parallel to a second direction intersecting the first direction; and The corner area connects the first inner side surface to the fourth inner side surface and is formed to extend in a direction away from the center of the partition wall opening.

14. The display panel according to claim 13, wherein: The corner area includes: a first corner region connecting the first inner side surface and the second inner side surface; a second corner region connecting the second inner side surface and the third inner side surface; A third corner region connecting the third inner side surface and the fourth inner side surface; and A fourth corner area connects the fourth inner side surface and the first inner side surface.

15. The display panel according to claim 14, wherein: Each of the first to fourth corner regions includes a plurality of sub-inner side surfaces, and an inner angle formed by the first inner side surface and at least one of the plurality of sub-inner side surfaces adjacent to the first inner side surface is greater than 180 degrees.

16. The display panel according to claim 14, wherein: On a plane, the first corner area is in an arc shape connecting the first inner side surface and the second inner side surface.

17. The display panel according to claim 14, wherein: The first corner area includes: a first sub-inner side surface extending from the first inner side surface; and The second sub-inner side surface extends from the first sub-inner side surface and is connected to the second inner side surface.

18. The display panel according to claim 14, wherein: The first corner area includes: a first sub-inner side surface extending from the first inner side surface; a second sub-inner side surface extending from the first sub-inner side surface; and The third sub-inner side surface extends from the second sub-inner side surface and is connected to the second inner side surface.

19. The display panel according to claim 14, wherein: The first corner area includes: a first sub-inner side surface extending from the first inner side surface; a second sub-inner side surface extending from the first sub-inner side surface; a third sub-inner side surface extending from the second sub-inner side surface; and The fourth sub-inner side surface extends from the third sub-inner side surface and is connected to the second inner side surface.

20. The display panel according to claim 14, wherein: Each of the first to fourth inner side surfaces includes a protruding area having a plurality of sub-inner side surfaces extending in a direction away from a center of the partition wall opening.

Images