Display device

Abstract

A display device includes a substrate, a plurality of light-emitting structures and a plurality of flow-guiding structures. The plurality of light-emitting structures are located in a display area of ​​the substrate, and each light-emitting structure has a light-emitting functional layer accommodation area. The plurality of flow-guiding structures are located in a non-display area of ​​the substrate, and are respectively connected to the light-emitting functional layer accommodation areas of the plurality of light-emitting structures. Each flow-guiding structure includes: a connecting section, a first flow-blocking section and a first V-shaped section. The connecting section has a first open end and a second open end, and the first open end is connected to the light-emitting functional layer accommodation area. The first flow-blocking section has a third open end and a fourth open end, and the third open end is connected to the second open end of the connecting section. The first V-shaped section has a fifth open end, a sixth open end and a seventh open end connected to the fifth open end and the sixth open end, wherein the fifth open end is connected to the third open end of the first flow-blocking section, and the sixth open end is connected to the fourth open end of the first flow-blocking section.

Description

Technical Field

[0001] The present invention relates to an electronic device, and in particular to a display device. Background Art

[0002] In the manufacturing process of the organic light emitting diode display device, the inkjet printing process (Ink Jet Printing; IJP) can be used to form the light emitting functional layer of the light emitting structure. The inkjet printing process is to inject liquid organic material into the light emitting functional layer containing area defined by the isolation structure, and then form the light emitting functional layer through drying and baking.

[0003] In an organic light emitting diode display device, the light emitting structures in the same column can have the same light color, so the light emitting functional layer accommodating areas in the same column can be arranged in series so that the liquid organic material injected once can be applied to multiple light emitting functional layer accommodating areas. However, as the size of the display device becomes larger and larger, the liquid organic material often accumulates or flows back in the light emitting functional layer accommodating area at the edge of the display device, resulting in uneven thickness of the light emitting functional layer or the formation of backflow lines, resulting in uneven light color of the light emitting structure and affecting the display quality of the display device. Summary of the invention

[0004] An object of the present invention is to provide a display device with improved display quality.

[0005] One embodiment of the present invention provides a display device, comprising: a substrate having a display area and a non-display area; a plurality of light-emitting structures located in the display area of ​​the substrate, and each of the light-emitting structures has a light-emitting functional layer accommodating area; and a plurality of flow-guiding structures located in the non-display area of ​​the substrate and respectively connected to the light-emitting functional layer accommodating areas of the plurality of light-emitting structures, wherein each flow-guiding structure comprises: a connecting section having a first open end and a second open end, and the first open end is connected to the light-emitting functional layer accommodating area; a first flow-blocking section having a third open end and a fourth open end, and the third open end is connected to the second open end of the connecting section; and a first V-shaped section having a fifth open end, a sixth open end, and a seventh open end connecting the fifth open end and the sixth open end, wherein the fifth open end is connected to the third open end of the first flow-blocking section, and the sixth open end is connected to the fourth open end of the first flow-blocking section.

[0006] In one embodiment of the present invention, the first flow-blocking section has an arc-shaped, folded-line-shaped or straight-line-shaped profile.

[0007] In an embodiment of the present invention, the bending angle of the folded line is between 10 degrees and 180 degrees.

[0008] In one embodiment of the present invention, the number of the first flow blocking segments or the first V-shaped segments is between 1 and 15, and the first flow blocking segments and the first V-shaped segments are alternately arranged.

[0009] In one embodiment of the present invention, the first V-shaped segment includes a first branch and a second branch, and an included angle between the first branch and the second branch is between 0 degrees and 90 degrees.

[0010] In one embodiment of the present invention, each of the above-mentioned flow-guiding structures also includes: a second flow-blocking section, having an eighth open end and a ninth open end, and the eighth open end is connected to the seventh open end of the first V-shaped section; and a second V-shaped section, having a tenth open end, an eleventh open end and a twelfth open end connected to the tenth open end and the eleventh open end, wherein the tenth open end is connected to the eighth open end of the second flow-blocking section, and the eleventh open end is connected to the ninth open end of the second flow-blocking section.

[0011] In one embodiment of the present invention, the first V-shaped segment includes a first branch connected to the connecting segment, the seventh open end is connected to the third branch of the second V-shaped segment, and the angle between the first branch and the third branch is between 90 degrees and 180 degrees.

[0012] In one embodiment of the present invention, the direction from the light emitting structure to the guide structure is a first direction, the second direction is perpendicular to the first direction, and the width ratio of the connecting section to the light emitting structure in the second direction is less than or equal to 1.

[0013] In one embodiment of the present invention, the width of the connecting section is equal to the width of the first flow-blocking section.

[0014] In one embodiment of the present invention, the direction from the above-mentioned light-emitting structure to the guide structure is a first direction, and the multiple light-emitting structures include a plurality of first color light-emitting structures arranged along the first direction, a plurality of second color light-emitting structures arranged along the first direction, and a plurality of third color light-emitting structures arranged along the first direction.

[0015] In one embodiment of the present invention, the display device further includes a first isolation structure located between the plurality of first color light emitting structures, between the plurality of second color light emitting structures, and between the plurality of third color light emitting structures.

[0016] In an embodiment of the present invention, the first flow-blocking section and the first V-shaped section surround the first isolation structure.

[0017] In one embodiment of the present invention, the above-mentioned display device also includes a second isolation structure, which is located between multiple first color light-emitting structures and multiple second color light-emitting structures, between multiple second color light-emitting structures and multiple third color light-emitting structures, and between multiple third color light-emitting structures and multiple first color light-emitting structures.

[0018] In one embodiment of the present invention, the first flow-blocking section and the first V-shaped section surround the second isolation structure.

[0019] In order to make the above features and advantages of the present invention more clearly understood, embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1A is a schematic top view of a display device according to an embodiment of the present invention.

[0021] Figure 1B yes Figure 1A A circuit diagram of an area of ​​the display device.

[0022] Figure 1C yes Figure 1A An enlarged schematic diagram of a region of the display device.

[0023] Figure 1D yes Figure 1C An enlarged schematic diagram of a region of the display device.

[0024] Figure 1E is along Figure 1D A schematic cross-sectional view taken along the section line AA'.

[0025] Figure 1F is along Figure 1D A schematic cross-sectional view taken along section line BB'.

[0026] Figure 1G is along Figure 1D Schematic cross-sectional view taken along section line CC'.

[0027] Figure 1H is along Figure 1C A schematic cross-sectional diagram taken along section line D-D'.

[0028] Fig. 1I is along Figure 1C Schematic cross-sectional view taken along section line EE'.

[0029] Figure 1J yes Figure 1C An enlarged schematic diagram of the guide structure of the display device.

[0030] Figure 2 FIG. 4 is an enlarged schematic diagram of a flow guiding structure according to an embodiment of the present invention.

[0031] Figure 3 FIG. 4 is an enlarged schematic diagram of a flow guiding structure according to an embodiment of the present invention.

[0032] Figure 4 FIG. 4 is an enlarged schematic diagram of a flow guiding structure according to an embodiment of the present invention.

[0033] Figure 5 FIG. 4 is an enlarged schematic diagram of a flow guiding structure according to an embodiment of the present invention.

[0034] The reference numerals are as follows:

[0035] 10: Display device

[0036] 110: Substrate

[0037] 120: Luminous structure

[0038] 121: First electrode

[0039] 122: Light-emitting functional layer

[0040] 123: Second electrode

[0041] 130, 230, 330, 430, 530: flow guide structure

[0042] 131: Connected segment

[0043] 132, 134, 136: choke section

[0044] 132A, 134A, 136A: choke section

[0045] 132B, 134B, 136B: choke section

[0046] 132C, 134C, 136C: choke section

[0047] 132D, 134D, 136D: choke section

[0048] 132r, 134r, 136r: arc-shaped concave

[0049] 132s, 134s, 136s: turning concave

[0050] 132t, 134t, 136t: turning concave

[0051] 132u, 134u, 136u: arc-shaped concave

[0052] 133, 135, 137: V-shaped segments

[0053] 133a, 133b, 135a, 135b, 137a, 137b: Branches

[0054] 133r, 135r, 137r: V-shaped recess

[0055] 140: Overlay

[0056] 150: First isolation structure

[0057] 150T: Top

[0058] 151: First Sub-section

[0059] 152: Second Subsection

[0060] 160: Second isolation structure

[0061] 160T: Top

[0062] A-A', B-B', C-C', D-D', E-E': hatching

[0063] AA: Display area

[0064] B1: First bending section

[0065] B2: Second bending segment

[0066] CA: Capacitor

[0067] D1: First direction

[0068] D2: Second direction

[0069] DL: Data Line

[0070] E11, E12: First color light emitting structure

[0071] E21, E22: Second color light emitting structure

[0072] E31, E32: Third color luminous structure

[0073] FA: Light-emitting functional layer accommodation area

[0074] G1, G2: Spacing

[0075] H1, H2: vertical distance

[0076] I1, I2, I3: Area

[0077] IS: Insulation layer

[0078] L1, L2, L3: Length

[0079] NA: Non-display area

[0080] O1~O17:Open end

[0081] OP: Opening

[0082] P1, P2: Partial

[0083] PL: Power Line

[0084] PS: Pixel structure

[0085] R: Inner diameter

[0086] R1: First column

[0087] R2: Second column

[0088] R3: The third column

[0089] S1, S2, S3: Side

[0090] SL: Scan Line

[0091] T1: First transistor

[0092] T2: Second transistor

[0093] TC: Semiconductor layer

[0094] TD: Drain

[0095] TG: Gate

[0096] TH: Through Hole

[0097] TS: Source

[0098] W1, W2, W3, W4, W5, W6: Width

[0099] θ1~θ9: Angle DETAILED DESCRIPTION

[0100] In the accompanying drawings, for the sake of clarity, the thickness of layers, films, panels, regions, etc. is magnified. Throughout the specification, the same reference numerals represent the same elements. It should be understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to another element, or an intermediate element can also exist. On the contrary, when an element is referred to as being "directly on" or "directly connected to" another element, there is no intermediate element. As used herein, "connection" can refer to physical and / or electrical connection. Furthermore, "electrical connection" or "coupling" can be other elements between two elements.

[0101] It should be understood that although the terms "first", "second", "third", etc. can be used to describe various elements, components, regions, layers and / or parts in this article, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, the first "element", "component", "region", "layer" or "part" discussed below can be referred to as a second element, component, region, layer or part without departing from the teachings of this article.

[0102] In addition, relative terms such as "lower" or "bottom" and "upper" or "top" may be used herein to describe the relationship of one element to another element, as shown in the figures. It should be understood that relative terms are intended to include different orientations of the device in addition to the orientation shown in the figures. For example, if the device in one figure is turned over, the element described as being on the "lower" side of the other elements will be oriented on the "upper" side of the other elements. Therefore, the exemplary term "lower" can include both "lower" and "upper" orientations, depending on the specific orientation of the figure. Similarly, if the device in one figure is turned over, the element described as being "lower" or "below" the other elements will be oriented as being "above" the other elements. Therefore, the exemplary term "lower" or "below" can include both above and below orientations.

[0103] As used herein, "about," "approximately," or "substantially" includes the stated value and an average value within an acceptable deviation range of the particular value determined by one of ordinary skill in the art, taking into account the measurement in question and the particular amount of error associated with the measurement (i.e., the limitations of the measurement system). For example, "about" may mean within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, ±5%. Furthermore, as used herein, "about," "approximately," or "substantially" may be selected based on the optical properties, etching properties, or other properties, and may not apply to all properties with one standard deviation.

[0104] Exemplary embodiments are described herein with reference to cross-sectional views that are schematic diagrams of idealized embodiments. Therefore, variations in the shapes of the illustrations as a result of, for example, manufacturing techniques and / or tolerances, can be expected. Therefore, the embodiments described herein should not be construed as limited to the specific shapes of the regions as shown herein, but rather include shape deviations that result, for example, from manufacturing. For example, a region shown or described as flat may typically have rough and / or nonlinear features. In addition, the sharp angles shown may be rounded. Therefore, the regions shown in the figures are schematic in nature, and their shapes are not intended to illustrate the precise shape of the regions and are not intended to limit the scope of the claims.

[0105] Figure 1A is a schematic top view of a display device 10 according to an embodiment of the present invention. Figure 1B yes Figure 1A Schematic diagram of a circuit of area I1 of the display device 10. Figure 1C yes Figure 1A An enlarged schematic diagram of area I2 of the display device 10 is shown. Figure 1D yes Figure 1C An enlarged schematic diagram of area I3 of the display device 10 is shown. Figure 1E is along Figure 1D A schematic cross-sectional view taken along the section line AA'. Figure 1F is along Figure 1D A schematic cross-sectional view taken along section line BB'. Figure 1G is along Figure 1D Schematic cross-sectional view taken along section line CC'. Figure 1H is along Figure 1C A schematic cross-sectional diagram taken along section line D-D'. Fig. 1I is along Figure 1C Schematic cross-sectional view taken along section line EE'. Figure 1J yes Figure 1C FIG. 1 is an enlarged schematic diagram of the guide structure 130 of the display device 10 .

[0106] Please refer to Figures 1A to 1J The display device 10 includes: a substrate 110 having a display area AA and a non-display area NA; a plurality of light-emitting structures 120 located in the display area AA of the substrate 110, and each of the light-emitting structures 120 has a light-emitting functional layer accommodating area FA; and a plurality of flow-guiding structures 130 located in the non-display area NA of the substrate 110 and respectively connected to the light-emitting functional layer accommodating area FA of the plurality of light-emitting structures 120, wherein each of the flow-guiding structures 130 includes: a connecting section 131 having an open end O1 and an open end O2, and the open end O1 is connected to the light-emitting functional layer accommodating area FA; a flow-blocking section 132 having an open end O3 and an open end O4, and the open end O3 is connected to the open end O2 of the connecting section 131; and a V-shaped section 133 having an open end O5, an open end O6, and an open end O7 connected to the open end O5 and the open end O6, wherein the open end O5 is connected to the open end O3 of the flow-blocking section 132, and the open end O6 is connected to the open end O4 of the flow-blocking section 132.

[0107] In the display device 10 of one embodiment of the present invention, a guide structure 130 is provided to prevent the liquid organic material from accumulating or flowing back to the light-emitting functional layer accommodating area FA, thereby preventing the uneven film thickness of the liquid organic material from causing uneven light color of the light-emitting structure 120, or preventing the formation of backflow lines, thereby improving the display quality of the display device 10.

[0108] The following, with Figures 1A to 1J , the implementation of each component of the display device 10 is continued to be described, but the present invention is not limited thereto.

[0109] In the present embodiment, the non-display area NA of the substrate 110 may surround the display area AA, but is not limited thereto. The substrate 110 may be a metal substrate, a glass substrate, or a flexible substrate. When the substrate 110 is a flexible substrate, its material includes a flexible material (such as polyamide (PA), polyimide (PI), polymethyl methacrylate (PMMA), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), fiber reinforced plastics (FRP), polyetheretherketone (PEEK), epoxy resin or other suitable materials or a combination of at least two of the foregoing), but is not limited thereto.

[0110] Please also refer to Figure 1A and Figure 1B , the display device 10 may further include a plurality of pixel structures PS, the plurality of pixel structures PS may be arrayed in the display area AA of the substrate 110, and each pixel structure PS may be electrically coupled to a corresponding data line DL and a corresponding scan line SL. For example, in the present embodiment, the pixel structure PS may include an active driving circuit of a dual-transistor single capacitor (2T1C). Specifically, the pixel structure PS may include a light-emitting structure 120, a first transistor T1, a second transistor T2, and a capacitor CA, wherein a control end of the first transistor T1 may be electrically coupled to a corresponding scan line SL, a first end of the first transistor T1 may be electrically coupled to a corresponding data line DL, a second end of the first transistor T1 may be electrically coupled to a control end of the second transistor T2, one end of the capacitor CA may be electrically coupled between the second end of the first transistor T1 and the control end of the second transistor T2, a first end of the second transistor T2 may be electrically coupled to a power line PL, and a second end of the second transistor T2 may be electrically coupled to the light-emitting structure 120. In other embodiments, the pixel structure PS may also have a 1T1C architecture, a 3T1C architecture, a 3T2C architecture, a 4T1C architecture, a 4T2C architecture, a 5T1C architecture, a 5T2C architecture, a 6T1C architecture, a 6T2C architecture, a 7T2C architecture or any other possible architecture.

[0111] For example, see Figure 1EThe thin film transistor T2 may include a gate electrode TG, a semiconductor layer TC, a source electrode TS, and a drain electrode TD, wherein the source electrode TS and the drain electrode TD are separated from each other, and the source electrode TS and the drain electrode TD are in contact with the semiconductor layer TC, respectively. In some embodiments, the display device 10 may further include an insulating layer IS, which may be disposed on the thin film transistor T2, and the insulating layer IS may have a single-layer structure or a multi-layer structure.

[0112] Please also refer to Figure 1C to Figure 1F In this embodiment, the light emitting structure 120 of the display device 10 may include a first electrode 121, a light emitting functional layer 122 and a second electrode 123, wherein the light emitting functional layer 122 may completely overlap the first electrode 121, and the second electrode 123 may be a surface electrode. In some embodiments, the first electrode 121 may be, for example, an anode of the light emitting structure 120, and the second electrode 123 may be a cathode of the light emitting structure 120.

[0113] In the present embodiment, the first electrode 121 may include a portion P1 and a portion P2, wherein the portion P2 of the first electrode 121 may have an approximately rectangular outline, and the portion P1 may be connected to the side of the rectangle of the portion P2, but is not limited thereto. In some embodiments, the portion P1 of the first electrode 121 may be connected to the corner of the rectangle of the portion P2. In the present embodiment, the portion P1 may overlap the through hole TH in the insulating layer IS, and the first electrode 121 may be electrically connected to the drain TD of the thin film transistor T2 through the through hole TH. In this way, the thin film transistor T2 may be turned on or off by the signal transmitted by the thin film transistor T1, and when the thin film transistor T2 is turned on, the signal transmitted on the power line PL may be transmitted to the first electrode 121 of the light emitting structure 120.

[0114] In the present embodiment, the display device 10 may further include a first isolation structure 150, which may be located on the insulating layer IS and distributed in the display area AA in a mesh structure, but is not limited thereto. For example, in the present embodiment, the direction from the light-emitting structure 120 to the guide structure 130 may be the first direction D1, and the second direction D2 may intersect with the first direction D1, or the second direction D2 may be perpendicular to the first direction D1. In the display area AA, the first isolation structure 150 may include a first sub-portion 151 and a second sub-portion 152, the first sub-portion 151 may extend along the second direction D2 and overlap a portion P1 of the first electrode 121, and the second sub-portion 152 may extend along the first direction D1 and partially overlap a portion P2 of the first electrode 121. The intersection of the first sub-portion 151 and the second sub-portion 152 may belong to either the first sub-portion 151 or the second sub-portion 152. The first isolation structure 150 may have an opening OP between the mesh structures, and the opening OP may expose a portion P2 of the first electrode 121 to form a light-emitting functional layer accommodating area FA of the light-emitting structure 120. In addition, in the non-display area NA, the first isolation structure 150 may be disposed on the entire substrate 110 and have a groove for forming the guide structure 130.

[0115] In the present embodiment, the display device 10 may further include a second isolation structure 160. In the display area AA, the second isolation structure 160 may include a plurality of strip structures extending in a single direction (e.g., the first direction D1), that is, the plurality of strip structures are parallel to each other. In addition, the extension direction of the strip structures of the second isolation structure 160 may intersect with the extension direction of the first sub-portion 151 or the second sub-portion 152 of the first isolation structure 150. For example, in the present embodiment, the extension direction of the second isolation structure 160 may intersect with the extension direction of the first sub-portion 151, and the extension direction of the second isolation structure 160 may be substantially parallel to the extension direction of the second sub-portion 152. The second isolation structure 160 may completely overlap with the second sub-portion 152, that is, the orthographic projection of the second isolation structure 160 on the substrate 110 may completely fall into the orthographic projection of the second sub-portion 152 on the substrate 110, and the second isolation structure 160 may not completely overlap the opening OP of the first isolation structure 150. In some embodiments, the second isolation structure 160 may partially overlap the second sub-portion 152 of the first isolation structure 150. In some embodiments, the orthographic projection of the second sub-portion 152 on the substrate 110 may completely fall into the orthographic projection of the second isolation structure 160 on the substrate 110. In some embodiments, the first isolation structure 150 may be a plurality of strip structures extending along a single direction (e.g., the second direction D2), and the plurality of strip structures of the first isolation structure 150 may intersect with the plurality of strip structures of the second isolation structure 160 to form a plurality of light-emitting functional layer accommodating areas FA.

[0116] In addition, in the non-display area NA, the second isolation structure 160 can be disposed on the first isolation structure 150 and has a groove for forming the guide structure 130, and the groove of the second isolation structure 160 can completely expose the groove of the first isolation structure 150. In other words, the orthographic projection of the groove of the first isolation structure 150 on the substrate 110 can completely overlap the orthographic projection of the groove of the second isolation structure 160 on the substrate 110, so that the grooves of the first isolation structure 150 and the second isolation structure 160 can jointly form the guide structure 130.

[0117] The material of the first isolation structure 150 may include an inorganic material or an organic material. The material of the second isolation structure 160 may include an organic material, and the surface of the second isolation structure 160 may be hydrophobic. The aforementioned inorganic material may include silicon oxide (SiOx), silicon nitride (SiNx), other oxides, other nitrides or other suitable materials, and the aforementioned organic material may include a photoresist material, a curable resin material or other suitable materials, but is not limited thereto.

[0118] The light-emitting functional layer accommodating area FA can accommodate materials (such as liquid organic materials) used to form the light-emitting functional layer 122. In other words, the light-emitting functional layer 122 can be located in the light-emitting functional layer accommodating area FA and cover the portion P2 of the first electrode 140. In this way, the first isolation structure 150 and the second isolation structure 160 can isolate the multiple light-emitting structures 120 from each other to form an array-arranged light-emitting structure 120. In some embodiments, the light-emitting functional layer 122 can have a multi-layer structure. For example, the light-emitting functional layer 122 can include a hole injection layer (Hole Injection Layer), a hole transport layer (HoleTransport Layer), a light-emitting layer (Electroluminescent Layer), an electron transport layer (ElectronTransport Layer), an electron injection layer (Electron Injection Layer), etc., which are sequentially arranged in the light-emitting functional layer accommodating area FA.

[0119] For example, after the first electrode 121, the first isolation structure 150 and the second isolation structure 160 are formed on the substrate 110, the light-emitting functional layer 122 of the light-emitting structure 120 can be formed in the light-emitting functional layer accommodating area FA by an inkjet printing process. The light-emitting functional layer 122 may include a plurality of sub-layers, and the inkjet printing process may first spray a liquid organic material, and then solidify the liquid organic material through a drying process to form each sub-layer in the light-emitting functional layer 122. The desired light-emitting functional layer 122 can be formed by repeating the inkjet printing process and the curing process. In some embodiments, a sub-layer (e.g., a hole injection layer) of the light-emitting functional layer 122 arranged in the same column along the first direction D1 can be formed simultaneously by a single spray of organic material, and a sub-layer (e.g., a hole injection layer) of the light-emitting functional layer 122 arranged in different columns along the second direction D2 can be formed by spraying different organic materials.

[0120] In this embodiment, if Figure 1F The vertical distance H1 between the top surface 160T of the second isolation structure 160 and the insulating layer IS is greater than Figure 1G The vertical distance H2 from the top surface 150T of the first isolation structure 150 to the insulating layer IS is shown. Through such a height design, during the process of forming the light-emitting functional layer 122, the sprayed liquid organic material can flow along the first direction D1 between the light-emitting functional layer accommodating areas FA of the light-emitting structures 120 in the same column to ensure the thickness uniformity of the light-emitting functional layer 122, while preventing the liquid organic material sprayed on the light-emitting functional layer accommodating areas FA of the light-emitting structures 120 in different columns from flowing along the second direction D2 to the light-emitting functional layer accommodating areas FA of the light-emitting structures 120 in different columns. In this way, the organic materials in the light-emitting functional layer accommodating areas FA of the light-emitting structures 120 in different columns can be prevented from mixing with each other, thereby reducing the color mixing defects of the display device 10.

[0121] For example, please also refer to Figure 1C , Figure 1D and Figure 1G, the first sub-portion 151 of the first isolation structure 150 can be located between the light-emitting function layer accommodating areas FA of the first color light-emitting structures E11 and E12 arranged in the first column R1 along the first direction D1, and the light-emitting function layer accommodating areas FA of the first color light-emitting structures E11 and E12 can be fluidly connected to each other, so that the first color light-emitting structures E11 and E12 can have the same light color. Similarly, the first sub-portion 151 of the first isolation structure 150 can be located between the second color light-emitting structures E21 and E22 arranged in the second column R2 along the first direction D1, and the second color light-emitting structures E21 and E22 can have the same light color; the first sub-portion 151 of the first isolation structure 150 can be located between the third color light-emitting structures E31 and E32 arranged in the third column R3 along the first direction D1, and the third color light-emitting structures E31 and E32 can have the same light color. In addition, the first color light-emitting structure E11, the second color light-emitting structure E21 and the third color light-emitting structure E31 can have different light colors from each other. In addition, please also refer to Figure 1C , Figure 1D and Figure 1F The second isolation structure 160 can be located between the first color light-emitting structures E11, E12 and the second color light-emitting structures E21, E22; the second isolation structure 160 can be located between the second color light-emitting structures E21, E22 and the third color light-emitting structures E31, E32, and the second isolation structure 160 can be located between the third color light-emitting structures E31, E32 and the first color light-emitting structures E11, E12.

[0122] In some embodiments, the display device 10 may further include a covering layer 140 . The second electrode 123 and the covering layer 140 may be sequentially disposed on the light-emitting functional layer 122 and cover the top surface and side surfaces of the first isolation structure 150 and the second isolation structure 160 .

[0123] Please also refer to Figure 1C and Figures 1H to 1J In this embodiment, the connecting section 131 of the guide structure 130 may have two open ends, namely, open ends O1 and O2, and the open end O1 may be in fluid communication with the light-emitting functional layer accommodating area FA of the light-emitting structure 120. In this way, excess liquid organic material can flow from the light-emitting functional layer accommodating area FA to the connecting section 131 of the guide structure 130, thereby preventing the liquid organic material from accumulating in the light-emitting functional layer accommodating area FA.

[0124] In some embodiments, the width W2 of the connecting section 131 in the second direction D2 may be less than or equal to the width W1 of the light emitting structure 120 in the second direction D2. In other words, the ratio of the width W2 of the connecting section 131 to the width W1 of the light emitting structure 120 may be less than or equal to 1. In some embodiments, the ratio of the width W2 of the connecting section 131 in the second direction D2 to the width W1 of the light emitting structure 120 in the second direction D2 may be between 0.1 and 0.8. In other embodiments, the ratio of the width W2 of the connecting section 131 in the second direction D2 to the width W1 of the light emitting structure 120 in the second direction D2 may be between 0.3 and 0.6.

[0125] There is no special restriction on the position where the connecting section 131 is connected to the light-emitting functional layer accommodating area FA of the light-emitting structure 120. For example, the connecting section 131 can be connected to any position on the side S1 of the light-emitting functional layer accommodating area FA. Specifically, there can be a spacing G1 between the connecting section 131 and the side S2 of the light-emitting functional layer accommodating area FA, and 0≤G1≤(W1-W2). Similarly, there can be a spacing G2 between the connecting section 131 and the side S3 of the light-emitting functional layer accommodating area FA, and 0≤G2≤(W1-W2).

[0126] In this embodiment, the flow blocking section 132 of the flow guiding structure 130 may have two open ends, namely, open ends O3 and O4, and the open end O3 may be fluidly connected to the open end O2 of the connecting section 131. The flow blocking section 132 may have an arc-shaped profile, but is not limited thereto. In other embodiments, the flow blocking section 132 may have profiles of other different shapes. In some embodiments, the flow blocking section 132 may have a semicircular profile, and the inner diameter R of the flow blocking section 132 may be between 5 μm and 50 μm, for example, about 10 μm, but is not limited thereto.

[0127] In this embodiment, the V-shaped section 133 of the flow-guiding structure 130 may include two branches 133a and 133b, and the V-shaped section 133 may have three open ends, namely, open ends O5, O6, and O7, wherein the open end O5 of the branch 133a may be fluidly connected to the open end O2 of the connecting section 131 and the open end O3 of the flow-blocking section 132, and the open end O7 may be located between the branches 133a and 133b, and the open end O5 may be fluidly connected to the open end O7 through the branch 133a, and the open end O6 may be fluidly connected to the open end O7 through the branch 133b. In this way, the liquid organic material from the light-emitting functional layer accommodating area FA can flow from the connecting section 131 to the branch 133a of the V-shaped section 133, and the liquid organic material from the connecting section 131 is not easy to flow into the flow-blocking section 132.

[0128] In some embodiments, the branches 133a and 133b of the V-shaped segment 133 may form an angle θ1, and 0 degrees <θ1 <90 degrees. In some embodiments, the maximum width W3 of the V-shaped segment 133 in the second direction D2 may be greater than or less than the width W1 of the light emitting structure 120 in the second direction D2. In some embodiments, the connecting segment 131 may have a width W2, the blocking segment 132 may have a width W4, the branch 133a of the V-shaped segment 133 may have a width W5, and the branch 133b of the V-shaped segment 133 may have a width W6, and W2=W4=W5=W6, but is not limited thereto. In some embodiments, the width W2 may be greater than the width W4, the width W5, or the width W6. In some embodiments, the width W4, the width W5, or the width W6 may be greater than or equal to 5μm. In some embodiments, the length of the flow-guiding structure 130 in the first direction D1 may be between 30μm and 3,000μm. In some embodiments, the length of the guide structure 130 in the first direction D1 may be between 300 μm and 1,000 μm, such as about 500 μm, but is not limited thereto.

[0129] In some embodiments, the length L1 of the light emitting structure 120 in the first direction D1 may be substantially equal to the length L3 of the branch 133a or the branch 133b of the V-shaped segment 133 in the first direction D1. In some embodiments, the connecting segment 131 may have a length L2, and the length L2 may be greater than the sum of the width W4 of the blocking segment 132 and the inner diameter R of the blocking segment 132, that is, L2>W4+R. In some embodiments, the maximum width W3 of the V-shaped segment 133 in the second direction D2 may be substantially equal to twice the sum of the width W4 and the inner diameter R of the blocking segment 132, that is, W3=2(W4+R). In addition, in the present embodiment, the arc-shaped recess 132r of the blocking segment 132 may face the V-shaped recess 133r of the V-shaped segment 133, but is not limited thereto.

[0130] Please also refer to Figure 1C and Fig. 1I In this embodiment, the blocking section 132 and the V-shaped section 133 may surround the first isolation structure 150 and the second isolation structure 160 , but the present invention is not limited thereto. In some embodiments, the blocking section 132 and the V-shaped section 133 may surround the first isolation structure 150 or the second isolation structure 160 .

[0131] Please also refer to Figure 1C , Figure 1H and Figure 1JIn some embodiments, the flow guiding structure 130 may further include a flow blocking section 134 and a V-shaped section 135, wherein the flow blocking section 134 may have open ends O8 and O9, the V-shaped section 135 may include two branches 135a and 135b, and the V-shaped section 135 may have open ends O10, O11, and O12. The open end O8 of the flow blocking section 134 may be fluidly connected to the open end O7 of the V-shaped section 133, the open end O10 of the branch 135a of the V-shaped section 135 may be fluidly connected to the open end O8 of the flow blocking section 134 and the open end O7 of the V-shaped section 133, and the open end O11 of the V-shaped section 135 may be fluidly connected to the open end O9 of the flow blocking section 134. The open end O12 may be located between the branches 135a and 135b, and the open end O10 may be fluidly connected to the open end O12 through the branch 135a, and the open end O11 may be fluidly connected to the open end O12 through the branch 133b. As a result, the liquid organic material can flow from the branch 133 a of the V-shaped segment 133 to the branch 135 a of the V-shaped segment 135 , and the liquid organic material from the branch 133 a is not easy to flow into the flow blocking segment 134 .

[0132] In this embodiment, the arc-shaped recessed portion 134r of the flow-blocking section 134 may face the V-shaped recessed portion 135r of the V-shaped section 135, but is not limited thereto. In some embodiments, an angle θ2 may be formed between the branch 133a of the V-shaped section 133 and the branch 135a of the V-shaped section 135, and 90 degrees < θ2 < 180 degrees. In some embodiments, the angle θ2 may be complementary to the angle θ1, in other words, θ1 + θ2 = 180 degrees.

[0133] In some embodiments, the flow guiding structure 130 may further include a flow blocking section 136 and a V-shaped section 137, wherein the flow blocking section 136 may have open ends O13 and O14, the V-shaped section 137 may include two branches 137a and 137b, and the V-shaped section 137 may have open ends O15, O16, and O17. The open end O13 of the flow blocking section 136 may be fluidically connected to the open end O12 of the V-shaped section 135, the open end O15 of the V-shaped section 137 may be fluidically connected to the open end O13 of the flow blocking section 136 and the open end O12 of the V-shaped section 135, and the open end O16 of the V-shaped section 137 may be fluidically connected to the open end O14 of the flow blocking section 136. The open end O17 may be located between the branches 137a and 137b, and the open end O15 may be fluidically connected to the open end O17 through the branch 137a, and the open end O16 may be fluidically connected to the open end O17 through the branch 137b. In this way, the liquid organic material can flow from the branch 135a of the V-shaped segment 135 to the branch 137a of the V-shaped segment 137, and the liquid organic material from the branch 135a is not easy to flow into the blocking segment 136. In this embodiment, the arc-shaped recessed portion 136r of the blocking segment 136 can face the V-shaped recessed portion 137r of the V-shaped segment 137, but is not limited thereto.

[0134] Please also refer to Figure 1C and Figure 1J When the liquid organic material flowing to the open end O17 of the V-shaped section 137 flows back, the liquid organic material can be divided into two parts and flow back to the branches 137a and 137b of the V-shaped section 137 respectively. Then, the liquid organic material from the branch 137b can flow into the blocking section 136, and the liquid organic material from the branch 137a can be divided into three parts and flow into the blocking section 136 and the branches 135a and 135b of the V-shaped section 135 respectively, wherein the liquid organic material flowing into the blocking section 136 can prevent the liquid organic material from the branch 137b from flowing to the open end O13, the liquid organic material flowing into the branch 135b can flow into the blocking section 134, and the liquid organic material flowing into the branch 135a can be divided into three parts and flow into the blocking section 136 and the branches 135a and 135b of the V-shaped section 135 respectively. The flow section 134 and the branches 133a and 133b of the V-shaped section 133, wherein the liquid organic material flowing into the blocking section 134 can prevent the liquid organic material from the branch 135b from flowing to the open end O8, the liquid organic material flowing into the branch 133b can flow into the blocking section 132, and the liquid organic material flowing into the branch 133a can be divided into two parts and flow into the blocking section 132 and the connecting section 131 respectively, and the liquid organic material flowing into the blocking section 132 can prevent the liquid organic material from the branch 133b from flowing to the open end O3. After the above-mentioned reflux diversion, the amount of liquid organic material that can flow back to the connecting section 131 has been greatly reduced, even negligible. Therefore, by providing the guide structure 130, the excess liquid organic material sprayed on the light-emitting functional layer accommodating area FA of each column of the light-emitting structure 120 can be caused to flow out of the light-emitting functional layer accommodating area FA, so as to avoid the accumulation of the liquid organic material, thereby ensuring that the film thickness formed by the liquid organic material is uniform. At the same time, it can also prevent the liquid organic material from flowing back to the light-emitting functional layer accommodating area FA, thereby avoiding the formation of backflow lines, thereby improving the display quality of the display device 10.

[0135] Although Figure 1J The guide structure 130 shown includes three blocking segments (i.e., blocking segments 132, 134, 136) and three V-shaped segments (i.e., V-shaped segments 133, 135, 137), but the number of blocking segments or the number of V-shaped segments is not limited thereto. In some embodiments, the number of blocking segments or V-shaped segments may be between 1 and 15, depending on, for example, the amount of liquid organic material or the area of ​​the non-display area NA. In some embodiments, the number of blocking segments or V-shaped segments may be between 3 and 12. In other embodiments, the number of blocking segments or V-shaped segments may be between 5 and 10. It should be noted that blocking segments (e.g., blocking segments 132, blocking segments 134, or blocking segments 136) and V-shaped segments (e.g., V-shaped segments 133, V-shaped segments 135, or V-shaped segments 137) may be alternately arranged, and the number of blocking segments and the number of V-shaped segments may be the same or different.

[0136] Figure 2 FIG. 2 is an enlarged schematic diagram of a flow guiding structure 230 according to an embodiment of the present invention. Figure 1J Compared with the guide structure 130 shown, Figure 2 The difference of the flow guide structure 230 shown is that the flow guide structure 230 may include a connecting section 131, flow blocking sections 132A, 134A, 136A and V-shaped sections 133, 135, 137, and the flow blocking sections 132A, 134A, 136A may have a zigzag profile. For example, the flow blocking section 132A may include a first bending section B1 and a second bending section B2, and the bending angle of the flow blocking section 132A may be an angle θ3 between the first bending section B1 and the second bending section B2, and the angle θ3 may be between 10 degrees and 180 degrees. In addition, the turning recesses 132s, 134s, 136s of the flow blocking sections 132A, 134A, 136A may be facing away from the V-shaped recesses 133r, 135r, 137r of the V-shaped sections 133, 135, 137, respectively, but are not limited thereto. Similar to Figure 1J The effect provided by the guide structure 130 shown is that the connecting section 131 of the guide structure 230 and one of the branches of the V-shaped sections 133, 135, and 137 can facilitate the excess liquid organic material to flow out of the light-emitting functional layer containing area, and the blocking sections 132A, 134A, and 136A of the guide structure 230 help to reduce the backflow of the liquid organic material, thereby preventing the liquid organic material from accumulating in or flowing back to the light-emitting functional layer containing area of ​​the light-emitting structure.

[0137] In some embodiments, the angle θ4 of the flow guiding structure 230 may be between 0 and 90 degrees. In some embodiments, the angle θ5 of the flow guiding structure 230 may be between 5 and 45 degrees. In some embodiments, the angle θ6 of the flow guiding structure 230 may be between 5 and 45 degrees.

[0138] Figure 3 FIG. 3 is an enlarged schematic diagram of a flow guiding structure 330 according to an embodiment of the present invention. Figure 1J Compared with the guide structure 130 shown, Figure 3 The difference of the flow guiding structure 330 shown is that the flow guiding structure 330 may include a connecting section 131, flow blocking sections 132B, 134B, 136B and V-shaped sections 133, 135, 137, and the flow blocking sections 132B, 134B, 136B may have a straight line profile. Figure 1JThe effect provided by the guide structure 130 shown is that the connecting section 131 of the guide structure 330 and one of the branches of the V-shaped sections 133, 135, and 137 can facilitate the excess liquid organic material to flow out of the light-emitting functional layer containing area, and the blocking sections 132B, 134B, and 136B of the guide structure 330 help to reduce the backflow of the liquid organic material, thereby preventing the liquid organic material from accumulating in or flowing back to the light-emitting functional layer containing area of ​​the light-emitting structure.

[0139] In some embodiments, the angle θ7 of the flow guiding structure 330 may be between 0 and 90 degrees. In some embodiments, the angle θ8 of the flow guiding structure 330 may be between 45 and 85 degrees. In some embodiments, the angle θ9 of the flow guiding structure 330 may be between 45 and 85 degrees.

[0140] Figure 4 FIG. 4 is an enlarged schematic diagram of a flow guiding structure 430 according to an embodiment of the present invention. Figure 2 Compared with the guide structure 230 shown, Figure 4 The difference of the flow guiding structure 430 shown is that the flow guiding structure 430 may include a connecting section 131, flow blocking sections 132C, 134C, 136C and V-shaped sections 133, 135, 137, and the turning recesses 132t, 134t, 136t of the flow blocking sections 132C, 134C, 136C may face the V-shaped recesses 133r, 135r, 137r of the V-shaped sections 133, 135, 137, respectively. Figure 1J The effect provided by the guide structure 130 shown is that the connecting section 131 of the guide structure 430 and one of the branches of the V-shaped sections 133, 135, and 137 can facilitate the excess liquid organic material to flow out of the light-emitting functional layer containing area, and the blocking sections 132C, 134C, and 136C of the guide structure 430 help to reduce the backflow of the liquid organic material, thereby preventing the liquid organic material from accumulating in or flowing back to the light-emitting functional layer containing area of ​​the light-emitting structure.

[0141] Figure 5 FIG. 5 is an enlarged schematic diagram of a flow guiding structure 530 according to an embodiment of the present invention. Figure 1J Compared with the guide structure 130 shown, Figure 5 The difference of the flow guiding structure 530 shown is that the flow guiding structure 530 may include a connecting section 131, flow blocking sections 132D, 134D, 136D and V-shaped sections 133, 135, 137, and the arc-shaped recessed portions 132u, 134u, 136u of the flow blocking sections 132D, 134D, 136D may respectively face away from the V-shaped recessed portions 133r, 135r, 137r of the V-shaped section 133. Figure 1JThe effect provided by the guide structure 130 shown is that the connecting section 131 of the guide structure 530 and one of the branches of the V-shaped sections 133, 135, and 137 can facilitate the excess liquid organic material to flow out of the light-emitting functional layer containing area, and the blocking sections 132D, 134D, and 136D of the guide structure 530 help to reduce the backflow of the liquid organic material, thereby preventing the liquid organic material from accumulating in or flowing back to the light-emitting functional layer containing area of ​​the light-emitting structure.

[0142] In summary, the display device of the present invention prevents liquid organic materials from accumulating in or flowing back to the light-emitting functional layer accommodating area by setting a guide structure, thereby preventing uneven film thickness of the liquid organic material from causing uneven light color of the light-emitting structure, or preventing the formation of backflow lines, thereby improving the display quality of the display device.

[0143] Although the present invention has been disclosed as above by way of embodiments, it is not intended to limit the present invention. Those skilled in the art may make slight changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the appended claims.

Claims

1. A display device, comprising: A substrate having a display area and a non-display area; A plurality of light-emitting structures are located in the display area of ​​the substrate, and each of the light-emitting structures has a light-emitting function layer accommodating area; as well as A plurality of guide structures are located in the non-display area of ​​the substrate and are respectively connected to the light-emitting function layer accommodating areas of the plurality of light-emitting structures, wherein each of the guide structures comprises: A connecting section having a first open end and a second open end, wherein the first open end is connected to the light-emitting functional layer accommodating area; a first flow-blocking section having a third open end and a fourth open end, wherein the third open end is connected to the second open end of the connecting section; and a first V-shaped section having a fifth open end, a sixth open end, and a seventh open end connected to the fifth open end and the sixth open end, wherein the fifth open end is connected to the third open end of the first flow-blocking section, and the sixth open end is connected to the fourth open end of the first flow-blocking section; Each of the diversion structures further comprises: a second flow-blocking section having an eighth open end and a ninth open end, wherein the eighth open end is connected to the seventh open end of the first V-shaped section; and The second V-shaped segment has a tenth open end, an eleventh open end and a twelfth open end connected to the tenth open end and the eleventh open end, wherein the tenth open end is connected to the eighth open end of the second blocking segment, and the eleventh open end is connected to the ninth open end of the second blocking segment. 2 . The display device according to claim 1 , wherein the first flow-blocking section has an arc-shaped, folded-line-shaped or straight-line-shaped profile. 3 . The display device as claimed in claim 2 , wherein a bending angle of the fold line is between 10 degrees and 180 degrees. 4 . The display device according to claim 1 , wherein the number of the first flow blocking segments or the first V-shaped segments is between 1 and 15, and the first flow blocking segments and the first V-shaped segments are alternately arranged. 5 . The display device as claimed in claim 1 , wherein the first V-shaped segment comprises a first branch and a second branch, and an angle between the first branch and the second branch is between 0 degrees and 90 degrees.

6. The display device as claimed in claim 1, wherein the first V-shaped segment includes a first branch connected to the connecting segment, the seventh open end is connected to a third branch of the second V-shaped segment, and an angle between the first branch and the third branch is between 90 degrees and 180 degrees.

7. The display device as claimed in claim 1, wherein the direction from the light-emitting structure to the guide structure is a first direction, a second direction is perpendicular to the first direction, and a width ratio of the connecting section to the light-emitting structure in the second direction is less than or equal to 1. The display device according to claim 1 , wherein a width of the connecting section is equal to a width of the first flow-blocking section.

9. A display device as described in claim 1, wherein the direction from the light-emitting structure to the guide structure is a first direction, and the multiple light-emitting structures include a plurality of first color light-emitting structures arranged along the first direction, a plurality of second color light-emitting structures arranged along the first direction, and a plurality of third color light-emitting structures arranged along the first direction. 10 . The display device as claimed in claim 9 , further comprising a first isolation structure located between the plurality of first color light emitting structures, between the plurality of second color light emitting structures and between the plurality of third color light emitting structures. The display device as claimed in claim 10 , wherein the first flow-blocking segment and the first V-shaped segment surround the first isolation structure.

12. The display device as described in claim 9 further includes a second isolation structure, which is located between the multiple first color light-emitting structures and the multiple second color light-emitting structures, between the multiple second color light-emitting structures and the multiple third color light-emitting structures, and between the multiple third color light-emitting structures and the multiple first color light-emitting structures. 13 . The display device as claimed in claim 12 , wherein the first flow-blocking segment and the first V-shaped segment surround the second isolation structure.

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