Display device

Abstract

A display device according to embodiments can include a first substrate including an array of pixels, a second substrate coupled to the first substrate, and a sealing member between the first substrate and the second substrate. The second substrate can include a base substrate including a display area overlapping the array of pixels and a peripheral area around the display area, a first compensation structure in the peripheral area on the base substrate at least partially overlapping the sealing member and including an organic material, a second compensation structure in the peripheral area on the base substrate spaced apart from the first compensation structure at least partially overlapping the sealing member and including a same material as a material of the first compensation structure, and a first capping layer covering the first compensation structure and the second compensation structure and including an inorganic material.

Description

Technical Field

[0001] Embodiments of this disclosure relate to a display device. More specifically, embodiments of this disclosure relate to a display device comprising an upper substrate and a lower substrate joined together by a sealing member. Background Technology

[0002] Flat panel displays are replacing cathode ray tube (CRT) displays due to their relatively light and thin profile. Representative examples of such flat panel displays include liquid crystal displays (LCDs) and organic light-emitting diode (OLED) displays.

[0003] A flat panel display device may include an upper substrate and a lower substrate. The lower substrate may be a display substrate including a pixel array. The upper substrate may be a color conversion substrate including a color conversion layer. The flat panel display device may include a display area for displaying an image and a peripheral area surrounding the display area (e.g., around the display area). A sealing member may be disposed in the peripheral area between the upper substrate and the lower substrate. The upper substrate and the lower substrate may be joined together by the sealing member. Summary of the Invention

[0004] The embodiments of this disclosure relate to display devices with improved reliability.

[0005] Additional aspects and / or features of this disclosure will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practice of this disclosure.

[0006] The display device according to an embodiment may include: a first substrate including a pixel array, a second substrate coupled to (e.g., combined with) the first substrate, and a sealing member between the first substrate and the second substrate. The second substrate may include: a base substrate including a display area overlapping the pixel array and a peripheral area surrounding (e.g., around) the display area; a first compensation structure in the peripheral area, on the base substrate, at least partially overlapping the sealing member, and including (e.g., an organic material); a second compensation structure in the peripheral area, on the base substrate, spaced apart from the first compensation structure, at least partially overlapping the sealing member, and including (e.g., a material identical to the material of the first compensation structure); and a first capping layer covering the first compensation structure and the second compensation structure and including (e.g., an inorganic material).

[0007] In one embodiment, a portion of the sealing member may be (e.g., filled or completely filled) in the first opening between the first compensation structure and the second compensation structure.

[0008] In one embodiment, the sealing member may come into contact with the first capping layer.

[0009] In one embodiment, the first compensation structure may be located around the display area. The second compensation structure may be located around the first compensation structure (e.g., around the first compensation structure).

[0010] In an embodiment, the second compensation structure may be smaller in width than the first compensation structure.

[0011] In one embodiment, the through-hole that exposes a portion of the first compensation structure may be in the second compensation structure.

[0012] In an embodiment, the first capping layer may cover the lower surface of the first compensation structure facing the first substrate, the lower surface of the second compensation structure facing the first substrate, the outer surface of the first compensation structure, and the inner surface of the second compensation structure.

[0013] In an embodiment, the second substrate may further include a third compensation structure in the peripheral region, on the base substrate, spaced apart from the second compensation structure, at least partially overlapping the sealing member, and including (e.g.,) a third material of the same material as the first compensation structure. A portion of the sealing member may (e.g., fill or completely fill) a second opening between the second and third compensation structures.

[0014] In an embodiment, the third compensation structure may be around the second compensation structure (e.g., it may surround the second compensation structure).

[0015] In an embodiment, the second substrate may further include: a color conversion layer in the display area, on the substrate, and including wavelength conversion particles configured to change the wavelength of incident light to emit light having a color different from the incident light; and a partition in the display area, on the substrate, and around (e.g., surrounding) the color conversion layer. The first compensation structure may include (e.g., be) the same material as the partition.

[0016] In an embodiment, the second substrate may further include: a functional layer comprising (e.g., an organic material) in the peripheral region, between the base substrate and the first compensation structure, and between the base substrate and the second compensation structure; and a second capping layer covering the functional layer and comprising (e.g., an inorganic material). The functional layer may include: a first functional layer surrounding (e.g., around) the display area; and a second functional layer spaced apart from and surrounding (e.g., around) the first functional layer.

[0017] In one embodiment, the first compensation structure and the second compensation structure can contact the second capping layer.

[0018] In one embodiment, the third opening between the first functional layer and the second functional layer may overlap with the second compensation structure.

[0019] In an embodiment, the second capping layer may cover the lower surface of the first functional layer facing the first substrate, the lower surface of the second functional layer facing the first substrate, the outer surface of the first functional layer, and the inner surface of the second functional layer.

[0020] In one embodiment, the second capping layer may expose the outer surface of the second functional layer.

[0021] In an embodiment, the second substrate may further include a color filter layer in the display area and on the base substrate. The functional layer may include (e.g., be) the same material as the color filter layer.

[0022] In an embodiment, the sealing member may include a first portion overlapping a first compensation structure, a second portion overlapping a second compensation structure, and a third portion overlapping a first opening between the first and second compensation structures. The third portion may be smaller in width than either the first or second portion.

[0023] In one embodiment, the sealing member may include spacer particles.

[0024] The display device according to an embodiment may include a first substrate, a second substrate bonded to the first substrate and including a compensation structure, and a sealing member between the first substrate and the compensation structure. An opening may be formed in the compensation structure. Therefore, the penetration of foreign matter into the interior of the compensation structure can be prevented or reduced. Thus, the adhesion between the first substrate and the second substrate can be improved, and the reliability of the display device can be enhanced.

[0025] It should be understood that both the foregoing general description and the following specific description are illustrative and intended to provide further explanation of the claimed disclosure. Attached Figure Description

[0026] The accompanying drawings, which are included to provide a further understanding of this disclosure and are incorporated in and form part of this specification, illustrate embodiments of this disclosure and, together with the description, serve to explain this disclosure.

[0027] Figure 1 This is a perspective view of a display device according to an embodiment.

[0028] Figure 2 It is a diagram. Figure 1 A plan view of the display device.

[0029] Figure 3 It is along Figure 2 The cross-sectional view taken from line I-I'.

[0030] Figure 4 It is along Figure 2 The main part of the cross-sectional view taken from line II-II'.

[0031] Figure 5 It is a diagram. Figure 4 An enlarged view of an example of region "A".

[0032] Figure 6 The diagram is in Figure 4 A plan view of an example of a compensation structure included in a display device.

[0033] Figure 7 The diagram is in Figure 4 A plan view of another example of a compensation structure included in a display device.

[0034] Figure 8 It is a diagram. Figure 4 A magnified view of another example of region "A".

[0035] Figure 9 It is a diagram. Figure 4 A magnified view of another example of region "A".

[0036] Figure 10 The diagram is in Figure 4 A plan view of yet another example of a compensation structure included in a display device.

[0037] Figures 11 to 16 This is a cross-sectional view illustrating a method for manufacturing a display device according to an embodiment.

[0038] Figure 17 This is a cross-sectional view of a display device according to another embodiment.

[0039] Figure 18 It is a diagram. Figure 17 A magnified view of region "B".

[0040] Figures 19 to 25 This is a cross-sectional view illustrating a method of manufacturing a display device according to another embodiment.

[0041] Figure 26 This is a cross-sectional view of a display device according to an embodiment.

[0042] Figure 27 This is a cross-sectional view of a display device according to another embodiment. Detailed Implementation

[0043] The exemplary, non-limiting embodiments will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings.

[0044] As used herein, when describing embodiments of this disclosure, the term “may” is used to refer to “one or more embodiments of this disclosure”. As used herein, the term “and / or” includes any and all combinations of one or more of the listed items.

[0045] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. As used herein, the singular forms “a” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. As used herein, the terms “approximately,” “about,” “approximately,” and similar terms are used as approximate terms rather than terms of degree and are intended to take into account the inherent bias of values ​​that would be recognized by one of ordinary skill in the art. As used herein, taking into account the measurements discussed and the errors associated with the measurement of a specific quantity (e.g., limitations of the measurement system), “about” or “approximately” includes the stated value and means within an acceptable range of deviation from the specific value as determined by one of ordinary skill in the art. For example, “about” may mean within one or more standard deviations, or within ±30%, ±20%, ±10%, ±5% of the stated value.

[0046] It will be understood that when an element or layer is referred to as being “on”, “connected to”, “coupled to”, or “adjacent to” another element or layer, the element or layer may be directly on, directly connected to, coupled to, or adjacent to the other element or layer, or one or more intermediary elements or layers may be present. Conversely, when an element or layer is referred to as being “directly” on, “directly connected to”, “directly coupled to”, or “directly adjacent to” another element or layer, no intermediary element or layer is present.

[0047] Figure 1 This is a perspective view of a display device according to an embodiment. Figure 2 It is a diagram. Figure 1 A plan view of the display device. Figure 3 It is along Figure 2 The cross-sectional view taken from line I-I'.

[0048] refer to Figures 1 to 3 The display device 10 according to an embodiment may include a display area DA and a peripheral area PA. An image may be displayed in the display area DA. The display area DA may include a plurality of pixel areas PXA. The peripheral area PA may surround the display area DA (e.g., around the display area DA).

[0049] The display device 10 may include a first substrate 100 and a second substrate 200 bonded to the first substrate 100. For example, the first substrate 100 may be an upper substrate, and the second substrate 200 may be a lower substrate. In some embodiments, the first substrate 100 and the second substrate 200 may be connected to each other (e.g., connected and / or attached).

[0050] The first substrate 100 may be a display substrate including a pixel array. Each pixel of the pixel array may include a light-emitting element that generates light in response to a driving signal.

[0051] The second substrate 200 may be a color conversion substrate including a color conversion layer. The color conversion layer may be disposed in the display area DA. The color conversion layer may convert the wavelength of light generated by the light-emitting element of the first substrate 100. In addition, the second substrate 200 may further include a color filter layer that transmits light having a set or specific color (e.g., light having a set or specific wavelength range (e.g., light within a set or specific wavelength range)).

[0052] The first substrate 100 and the second substrate 200 can be joined together by a sealing member 300. The sealing member 300 can be disposed in a peripheral region PA between the first substrate 100 and the second substrate 200. For example, the sealing member 300 can be disposed between the first substrate 100 and the second substrate 200 to surround (e.g., around) the display area DA. For example, the sealing member 300 can have a hollow rectangular shape (e.g., a rectangular frame shape) in a plan view. For example, the sealing member 300 can have a line shape extending around (e.g., around) the display area DA in a plan view. For example, the sealing member 300 can contact the upper surface of the first substrate 100 and the lower surface of the second substrate 200, and can join the first substrate 100 and the second substrate 200 together. In some embodiments, the sealing member 300 can connect (e.g., join or attach) the first substrate 100 and the second substrate 200 together.

[0053] A cell gap GP can be formed between the first substrate 100 and the second substrate 200. For example, the cell gap GP can be held by a sealing member 300 disposed between the first substrate 100 and the second substrate 200. For example, the cell gap GP can be encapsulated (e.g., encapsulated or surrounded on all sides) by the first substrate 100, the second substrate 200 and the sealing member 300.

[0054] Figure 4 It is along Figure 2 The main part of the cross-sectional view taken from line II-II'.

[0055] refer to Figure 4In the embodiment, the second substrate 200 (see Figure 3 The display area DA may include a first substrate 210, a color filter layer, a light-shielding layer 223, a functional layer 230, a first capping layer 240, a color conversion layer, a transmissive layer 256, a partition 260, a compensation structure 270, and a second capping layer 280. For example, the color filter layer, light-shielding layer 223, color conversion layer, transmissive layer 256, and partition 260 may be disposed on the first substrate 210 as a display area DA (see [link to relevant documentation]). Figure 3 The functional layer 230 and the compensation structure 270 can be arranged in the peripheral region PA on the first substrate 210. Referring below... Figure 4 The display area DA and the pixel area PXA included in the display area DA of the second substrate 200 are described.

[0056] Please note, Figure 4 Only the peripheral area PA and the pixel area PXA in the display area DA are shown.

[0057] The first substrate 210 may include a display area DA and a peripheral area PA. The display area DA may overlap with a pixel array included in the first substrate 100. The display area DA may include a pixel area PXA. The peripheral area PA may surround the display area DA (e.g., around the display area DA).

[0058] Each pixel region PXA included in the display area DA may include at least one light-emitting region and a light-shielding region BA. Light generated by the light-emitting element of the first substrate 100 can be emitted to the outside through the light-emitting region. For example, the light-emitting region may include a first light-emitting region LA1, a second light-emitting region LA2, and a third light-emitting region LA3. Transmitted light of different colors can be emitted from the first to the third light-emitting regions LA1, LA2, and LA3, respectively. The light-shielding region BA may surround the light-emitting region (e.g., around the light-emitting region).

[0059] When incident light L1 emitted from the first substrate 100 is incident into the second substrate 200, first to third transmitted light L2B, L2R, and L2G of different colors can be emitted from the first to third light-emitting regions LA1, LA2, and LA3, respectively. For example, incident light L1 can be blue light. The first transmitted light L2B emitted from the first light-emitting region LA1 can be blue light. The second transmitted light L2R emitted from the second light-emitting region LA2 can be red light. The third transmitted light L2G emitted from the third light-emitting region LA3 can be green light.

[0060] A color filter layer can be disposed in the display area DA on the first substrate 210. The color filter layer may include first to third color filter layers 222, 224, and 226. For example, the first color filter layer 222 may overlap with the first light-emitting area LA1 and can transmit blue light. The second color filter layer 224 may overlap with the second light-emitting area LA2 and can transmit red light. The third color filter layer 226 may overlap with the third light-emitting area LA3 and can transmit green light.

[0061] A light-shielding layer 223 may be disposed in a display area DA on a first substrate 210. The light-shielding layer 223 may overlap with a light-shielding area BA. In embodiments, the light-shielding layer 223 may comprise (e.g., be) a material substantially the same as that of the first color filter layer 222. For example, the light-shielding layer 223 may be located in substantially the same layer as the first color filter layer 222. For example, the first color filter layer 222 and the light-shielding layer 223 may be formed substantially simultaneously (or concurrently) using (e.g., using) the same material. The light-shielding layer 223 may be disposed entirely within the light-shielding area BA (e.g., disposed throughout the entire light-shielding area BA and / or disposed only within the light-shielding area BA). The light-shielding layer 223 may prevent or reduce color mixing between adjacent light-emitting areas.

[0062] The first capping layer 240 can be completely disposed within the display area DA and the peripheral area PA on the first substrate 210 (e.g., disposed throughout the entire display area DA and the peripheral area PA and / or disposed only within the display area DA and the peripheral area PA). For example, a portion of the first capping layer 240 disposed within the display area DA can cover the first to third color filter layers 222, 224, and 226 and the light-shielding layer 223. Another portion of the first capping layer 240 disposed within the peripheral area PA can cover the functional layer 230.

[0063] The first capping layer 240 may include (for example,) an inorganic material such as silicon oxide and / or silicon nitride. For example, the first capping layer 240 may be arranged to have substantially the same thickness along the contours of the first to third color filter layers 222, 224 and 226, the light-shielding layer 223 and the functional layer 230.

[0064] A color conversion layer can be disposed in the display area DA on the first substrate 210. The color conversion layer can change the wavelength of the incident light L1 to emit transmitted light having a color different from that of the incident light L1. In an embodiment, the color conversion layer may include a first color conversion layer 252 and a second color conversion layer 254.

[0065] The first color conversion layer 252 may overlap with the second light-emitting region LA2. The first color conversion layer 252 may include wavelength conversion particles 252a and resin portions 252b.

[0066] In an embodiment, each wavelength conversion particle 252a in the wavelength conversion particle 252a may include a quantum dot. The quantum dot may include (e.g., is or is defined as) a nanocrystalline semiconductor material. The quantum dot may absorb incident light and emit light having a wavelength different from the wavelength of the incident light. For example, the quantum dot may have a diameter equal to or less than about 100 nm. In an embodiment, the quantum dot may have a diameter from about 1 nm to about 20 nm (e.g., average particle size). The average particle size may refer to, for example, the median size (D50) measured using a laser diffraction particle diameter profiler. For example, each wavelength conversion particle 252a in the wavelength conversion particle 252a may include a quantum dot for absorbing blue light and emitting red light.

[0067] Wavelength conversion particles 252a can be disposed in resin portion 252b. For example, resin portion 252b may include (e.g.) epoxy resin, acrylic resin, phenolic resin, melamine resin, cardo resin, imide resin, etc.

[0068] In an embodiment, the first color conversion layer 252 may further include scattering particles 252c. The scattering particles 252c can scatter the incident light L1 without substantially altering the wavelength of the incident light L1. Therefore, the path of light traveling within the first color conversion layer 252 (e.g., traveling through the first color conversion layer 252) can be increased. For example, the scattering particles 252c may include (e.g., be) metal oxides and / or organic materials.

[0069] The first color conversion layer 252 can change the wavelength of the incident light L1 (e.g., blue incident light) to emit a second transmitted light L2R (e.g., red transmitted light). The remaining portion of the blue incident light L1 that does not change color in the first color conversion layer 252 can be blocked by the second color filter layer 224. Therefore, the second emitting region LA2 can selectively emit red transmitted light L2R.

[0070] The second color conversion layer 254 may overlap with the third emitting region LA3. The second color conversion layer 254 may include wavelength conversion particles 254a, a resin portion 254b, and scattering particles 254c. The resin portion 254b may include (e.g., is) a material substantially the same as the material of the resin portion 252b of the first color conversion layer 252. The scattering particles 254c may include (e.g., is) a material substantially the same as the material of the scattering particles 252c of the first color conversion layer 252.

[0071] In this embodiment, each wavelength conversion particle 254a may include a quantum dot for absorbing blue light and emitting green light. The second color conversion layer 254 may alter the wavelength of the incident light L1 (e.g., blue incident light) to emit a third transmitted light L2G (e.g., green transmitted light). The remaining portion of the blue incident light L1 that does not change color in the second color conversion layer 254 may be blocked by the third color filter layer 226. Therefore, the third emitting region LA3 can selectively emit green transmitted light L2G.

[0072] The transmissive layer 256 may overlap with the first light-emitting region LA1. In some embodiments, the transmissive layer 256 does not convert the incident light L1 and may emit a first transmitted light L2B that is substantially the same as the incident light L1 (e.g., has a wavelength substantially the same as the incident light L1). For example, the transmissive layer 256 may absorb blue light and emit blue light. The transmissive layer 256 may include a resin portion 256b and scattering particles 256c. The resin portion 256b may include (e.g., is) a material substantially the same as the material of the resin portion 252b of the first color conversion layer 252. The scattering particles 256c may include (e.g., is) a material substantially the same as the material of the scattering particles 252c of the first color conversion layer 252.

[0073] Partition 260 can be disposed in the display area DA on the first substrate 210. Partition 260 can be disposed around the side surfaces of the first color conversion layer 252, the second color conversion layer 254, and the transmissive layer 256 (e.g., around the side surfaces of the first color conversion layer 252, the second color conversion layer 254, and the transmissive layer 256). In some embodiments, partition 260 can have openings corresponding to the first color conversion layer 252, the second color conversion layer 254, and the transmissive layer 256, respectively. Each of the first color conversion layer 252, the second color conversion layer 254, and the transmissive layer 256 can be in the corresponding opening of partition 260. Partition 260 can form a space (e.g., an opening) for receiving ink components used to form the first color conversion layer 252, the second color conversion layer 254, and the transmissive layer 256. Therefore, partition 260 can have a grid shape or a matrix shape in a plan view.

[0074] For example, partition 260 may include (e.g., is) organic materials such as photoresist, epoxy resin, phenolic resin, acrylic resin, and / or silicone resin. Partition 260 may further include (e.g., is) a light-shielding material. For example, at least a portion of partition 260 may include (e.g., is) a light-shielding material such as pigment, dye, and / or carbon black. Partition 260 may completely overlap with the light-shielding area BA (e.g., overlap with the entire light-shielding area BA and / or overlap only with the light-shielding area BA).

[0075] The second capping layer 280 may be completely disposed within the display area DA and the peripheral area PA on the first substrate 210 (e.g., disposed throughout the display area DA and the peripheral area PA and / or disposed only within the display area DA and the peripheral area PA). For example, a portion of the second capping layer 280 disposed within the display area DA may cover the first color conversion layer 252 and the second color conversion layer 254, the transmissive layer 256, and the partition 260. Another portion of the second capping layer 280 disposed within the peripheral area PA may cover the compensation structure 270. In some embodiments, another portion of the second capping layer 280 disposed within the peripheral area PA may further cover at least a portion of the first capping layer 240 (e.g., the portion of the first capping layer 240 exposed by the first opening OP1).

[0076] The second capping layer 280 may include (for example) an inorganic material such as silicon oxide and / or silicon nitride. For example, the second capping layer 280 may be arranged to have substantially the same thickness along the contours of the first color conversion layer 252 and the second color conversion layer 254, the transmission layer 256, the partition 260, and the compensation structure 270.

[0077] The filler member 320 may be disposed between the first substrate 100 and the second substrate 200. The filler member 320 may include (e.g., is) an organic material such as silicone resin and / or epoxy resin. Additionally, the filler member 320 may include (e.g., is) a suitable and / or appropriate material for matching the refractive index. For example, the refractive index of the filler member 320 may match the refractive index of the first substrate 100 and / or the refractive index of the second capping layer 280 (e.g., substantially the same as the refractive index of the first substrate 100 and / or the refractive index of the second capping layer 280).

[0078] Figure 5 It is a diagram. Figure 4 An enlarged view of an example of region "A". Figure 6 The diagram is in Figure 4 A plan view of an example of a compensation structure included in a display device.

[0079] In the following text, reference will be made to Figures 4 to 6 Describe the peripheral region PA of the second substrate 200.

[0080] refer to Figures 4 to 6The functional layer 230 may be disposed in the peripheral region PA on the first substrate 210. The functional layer 230 may include (e.g., is) an organic material. For example, the functional layer 230 may include (e.g., is) a material with low reflectivity and may prevent or reduce the reflection of external light incident on the first substrate 210 from the outside (e.g., on the surface of the functional layer 230 facing the first substrate 210). In some embodiments, the functional layer 230 may include (e.g., is) a material substantially the same as the material of the color filter layer. In some embodiments, the functional layer 230 may include (e.g., is) a material substantially the same as the material of one or more (e.g., two) color filter layers (e.g., the first color filter layer 222 and the second color filter layer 224). Furthermore, the functional layer 230 may, together with the compensation structure 270, compensate for the step difference between the first substrate 100 and the first substrate 210. This will be described in more detail later. Optionally, the functional layer 230 may be omitted.

[0081] Functional layer 230 can have a single-layer or multi-layer structure. For example, as... Figure 4 As illustrated, functional layer 230 may include an upper functional layer 232 and a lower functional layer 234. The upper functional layer 232 may include (e.g., is) a material substantially the same as that of the first color filter layer 222. The lower functional layer 234 may include (e.g., is) a material substantially the same as that of the second color filter layer 224. However, embodiments are not limited thereto, and functional layer 230 may have a single-layer structure or a multilayer structure with three or more layers. For example, functional layer 230 may further include a low-refractive-index layer having a refractive index lower than that of the first substrate 210. In some embodiments, the low-refractive-index layer may be the uppermost layer of functional layer 230 directly contacting the first substrate 210.

[0082] The first capping layer 240 may be arranged in a portion of the peripheral region PA to cover the functional layer 230. For example, the first capping layer 240 may be arranged to have substantially the same thickness along the contour of the functional layer 230. The first capping layer 240 may prevent or reduce the penetration of foreign matter such as oxygen and / or moisture into the functional layer 230.

[0083] The compensation structure 270 can be disposed in the peripheral region PA on the first substrate 210. For example, the compensation structure 270 can be disposed below the functional layer 230 and the first capping layer 240. For example, the functional layer 230 can be disposed between the first substrate 210 and the compensation structure 270. For example, the upper surface of the compensation structure 270 can directly contact the lower surface of the first capping layer 240.

[0084] The sealing member 300 may overlap with the compensation structure 270 (e.g., in a plan view). The compensation structure 270 may compensate for the step difference between the first substrate 100 and the first base substrate 210. In some embodiments, on the first base substrate 210, the first color conversion layer 252 and the second color conversion layer 254, the transmissive layer 256, and the partition 260 may be arranged only in the display area DA and not in the peripheral area PA. Therefore, a step difference may occur between the display area DA and the peripheral area PA between the first substrate 100 and the first base substrate 210. The compensation structure 270 may compensate for the step difference such that the thickness (e.g., thickness in the up and down directions) and width (e.g., width in the left and right directions) of the sealing member 300 arranged in the peripheral area PA between the first substrate 100 and the second substrate 200 may be reduced. In some embodiments, the width of the sealing member 300 may refer to the width in the horizontal direction in a plan view, which is orthogonal (e.g., perpendicular) to the extension direction (e.g., the main extension direction) of the sealing member 300. Therefore, the width of the peripheral area PA of the display device 10 can be reduced.

[0085] The compensation structure 270 may include (e.g., is) an organic material. For example, the compensation structure 270 may include (e.g., is) a material substantially the same as the material of the partition wall 260. For example, the compensation structure 270 may include (e.g., is) an organic material such as photoresist, epoxy resin, phenolic resin, acrylic resin, and / or silicone resin. The compensation structure 270 may further include (e.g., is) a light-shielding material.

[0086] The compensation structure 270 may include a first compensation structure 271 and a second compensation structure 272 spaced apart from the first compensation structure 271 (e.g., spaced apart from the first compensation structure 271 in a plan view). A first opening OP1 may be formed between the first compensation structure 271 and the second compensation structure 272. The second compensation structure 272 may include (e.g., be) a material substantially the same as that of the first compensation structure 271.

[0087] At least a portion of the first compensation structure 271, at least a portion of the second compensation structure 272, and the first opening OP1 may overlap with the sealing member 300. For example, the sealing member 300 may continuously overlap with the first compensation structure 271, the first opening OP1, and the second compensation structure 272. For example, as... Figure 4As illustrated, a portion of the sealing member 300 may fill (e.g., completely fill) the first opening OP1. For example, a protruding portion of the sealing member 300 may (e.g., in the cross-sectional view) protrude between the first compensation structure 271 and the second compensation structure 272. For example, the protruding portion of the sealing member 300 may protrude upward from the upper surface of the sealing member 300 (e.g., the surface of the sealing member 300 facing the first base substrate 210) between the first compensation structure 271 and the second compensation structure 272.

[0088] For example, such as Figure 6 As illustrated, the first compensation structure 271 can be disposed in the peripheral region PA on the first substrate 210. The first compensation structure 271 can be around (e.g., surrounding) the display region DA. For example, the first compensation structure 271 can have a hollow rectangular shape (e.g., a rectangular frame shape) in a plan view. For example, the first compensation structure 271 can have a line shape extending around (e.g., surrounding) the display region DA in a plan view.

[0089] The second compensation structure 272 may be disposed in the peripheral region PA on the first base substrate 210. The second compensation structure 272 may be spaced apart from the first compensation structure 271 (e.g., spaced apart from the first compensation structure 271 in a plan view) and may be present around the first compensation structure 271 in a plan view (e.g., surrounding the first compensation structure 271). For example, the second compensation structure 272 may have a hollow rectangular shape (e.g., a rectangular frame shape) in a plan view. In some embodiments, the width of the second compensation structure 272 (e.g., the width in the left and right directions) may be smaller than the width of the first compensation structure 271. In some embodiments, the widths of the first compensation structure 271 and the second compensation structure 272 may refer to widths along a horizontal direction in a plan view, which is orthogonal (e.g., perpendicular) to the extension directions (e.g., the main extension directions) of the first compensation structure 271 and the second compensation structure 272, respectively. In some embodiments, the second compensation structure 272 may have a linear shape extending around (e.g., surrounding) the first compensation structure 271 in a plan view.

[0090] A first opening OP1 may be formed between the first compensation structure 271 and the second compensation structure 272. The first opening OP1 may be located in the peripheral region PA. The first opening OP1 may be spaced apart from the display region DA (e.g., spaced apart from the display region DA in a plan view) and may be around the display region DA in a plan view (e.g., surrounding the display region DA). For example, the first opening OP1 may have a hollow rectangular shape (e.g., a rectangular frame shape) in a plan view. In some embodiments, the first opening OP1 may be between the first compensation structure 271 and the second compensation structure 272 in a plan view. For example, the first opening OP1 may have a line shape extending around (e.g., around) the first compensation structure 271 in a plan view, and the second compensation structure 272 may have a line shape extending around (e.g., around) the first opening OP1 in a plan view.

[0091] The second capping layer 280 may cover a portion of the peripheral region PA, thereby covering the compensation structure 270. For example, the second capping layer 280 may continuously cover the first compensation structure 271 and the second compensation structure 272. For example, the second capping layer 280 may be arranged to have substantially the same thickness along the contours of the first compensation structure 271 and the second compensation structure 272.

[0092] For example, such as Figure 5 As illustrated, the second capping layer 280 may cover the lower surface 271a of the first compensation structure 271 facing the first substrate 100, the lower surface 272a of the second compensation structure 272 facing the first substrate 100, and the lower surface of the first capping layer 240 overlapping with the first opening OP1 (e.g., exposed by the first opening OP1). The second capping layer 280 may further cover the outer surface 271b of the first compensation structure 271 adjacent to the second compensation structure 272 (e.g., in a plan view, the side surface of the first compensation structure 271 facing away from the display area DA). The second capping layer 280 may further cover the inner surface 272c of the second compensation structure 272 adjacent to the first compensation structure 271 (e.g., in a plan view, the side surface of the second compensation structure 272 facing the display area DA) and the outer surface 272b of the second compensation structure 272 opposite to the inner surface 272c (e.g., in a plan view, the side surface of the second compensation structure 272 facing away from the display area DA). For example, the second capping layer 280 can cover the side surface of the compensation structure 270 that forms the first opening OP1. The second capping layer 280 can prevent or reduce the infiltration of foreign matter such as oxygen and / or moisture into the first compensation structure 271 and the second compensation structure 272 from the outside.

[0093] As described above, the sealing member 300 may overlap with at least a portion of the first compensation structure 271, at least a portion of the second compensation structure 272, and the first opening OP1. For example, as Figure 5 As illustrated, the sealing member 300 may include a first portion 301 overlapping with the first compensation structure 271, a second portion 302 overlapping with the second compensation structure 272, and a third portion 303 overlapping with the first opening OP1. For example, the width of the third portion 303 (e.g., the width in the left and right directions) may be smaller than the width of the first portion 301 or the width of the second portion 302. In some embodiments, the widths of the first portion 301, the second portion 302, and the third portion 303 may refer to the widths in a horizontal direction along the plan view, which is orthogonal (e.g., perpendicular) to the extension directions (e.g., the main extension directions) of the first portion 301, the second portion 302, and the third portion 303, respectively.

[0094] In this embodiment, the sealing member 300 may directly contact the lower surface of the second capping layer 280 and the upper surface of the first substrate 100. For example, the sealing member 300 may include (e.g., is) a glass frit. Alternatively, the sealing member 300 may include (e.g., is) a photocurable material. Optionally, the sealing member 300 may further include (e.g., is) a material for preventing or blocking moisture penetration.

[0095] In some embodiments, the second capping layer 280 may expose a portion of the side surface of the first compensation structure 271 and / or a portion of the side surface of the second compensation structure 272. For example, the closer to the first substrate 210, the outer surface 271b of the first compensation structure 271, the outer surface 272b of the second compensation structure 272, and / or the inner surface 272c of the second compensation structure 272 may not be adequately covered by the second capping layer 280. For example, with Figure 5 Unlike the example illustrated, the second capping layer 280 may expose portions A1, A2, and A3 of the first compensation structure 271 and the second compensation structure 272 adjacent to the first substrate 210. For example, the second capping layer 280 may expose a portion of the outer surface 271b of the first compensation structure 271, a portion of the outer surface 272b of the second compensation structure 272, and / or the portion of the inner surface 272c of the second compensation structure 272 that contacts the layer directly above the compensation structure 270 (e.g., the first capping layer 240). In this case, foreign matter such as moisture may penetrate from the outside into the interior of the first compensation structure 271 and / or the interior of the second compensation structure 272 through the exposed portions A1, A2, and A3.

[0096] In related technology display devices, openings (e.g., openings corresponding to the first opening OP1) are not formed in the compensation structure. Therefore, when a portion of the outer surface of the compensation structure is exposed, foreign matter such as moisture may penetrate from the outside into the interior of the compensation structure. Consequently, the capping layer (e.g., the capping layer corresponding to the second capping layer 280) and / or sealing member may be completely peeled off from the compensation structure (e.g., peeled off from the entire compensation structure). This may reduce the adhesion between the upper and lower substrates.

[0097] However, as Figure 5 As illustrated in the figure, the display device 10 according to an embodiment may include a first compensation structure 271 and a second compensation structure 272 spaced apart from the first compensation structure 271. A first opening OP1 may be formed between the first compensation structure 271 and the second compensation structure 272. Therefore, even if a portion A1 of the second compensation structure 272 is exposed by the second sealing layer 280, and foreign matter such as moisture permeates into the interior of the second compensation structure 272 from the outside, the foreign matter will not directly permeate into the interior of the first compensation structure 271. For example, in order for foreign matter to permeate into the interior of the first compensation structure 271, the foreign matter must further pass through the exposed portion A2 of the second compensation structure 272 opposite to the exposed portion A1, the first opening OP1 which is filled (e.g., completely filled) by a portion of the sealing member 300, and the exposed portion A3 of the first compensation structure 271. In addition, as described above, the width of the first compensation structure 271 may be greater than the width of the second compensation structure 272. Therefore, the permeation of foreign matter into the interior of the first compensation structure 271, which has a relatively large width, can be prevented or reduced. Therefore, it is possible to prevent or reduce the peeling of the second cover layer 280 and / or the sealing member 300 from the first compensation structure 271, which has a relatively large width. Thus, the adhesion between the first substrate 100 and the second substrate 200 can be improved, and the reliability of the display device 10 can be enhanced.

[0098] Figure 7 The diagram is in Figure 4 A plan view of another example of a compensation structure included in a display device.

[0099] refer to Figure 7In an embodiment, at least one through-hole TH may be formed in the second compensation structure 272. For example, the through-hole TH may be formed to extend through the second compensation structure 272 in a direction orthogonal (e.g., perpendicular) to the direction in which the second compensation structure 272 extends. For example, the through-hole TH may provide a channel extending through the width of the second compensation structure 272. The through-hole TH may expose a portion of the first compensation structure 271. The through-hole TH may connect (e.g., link) the exterior of the first opening OP1 and the second compensation structure 272. In some embodiments, during the process of arranging the sealing member 300 to overlap with the first compensation structure 271, the second compensation structure 272, and the first opening OP1, foreign matter such as air and / or moisture may be located in the first opening OP1. For example, when the sealing member 300 diffuses along the peripheral region PA, foreign matter such as air may remain in the first opening OP1. The through-hole TH can discharge the foreign matter remaining in the first opening OP1 to the exterior of the second compensation structure 272. In an embodiment, multiple through-holes TH may be provided as needed.

[0100] Figure 8 It is a diagram. Figure 4 A magnified view of another example of region "A".

[0101] refer to Figure 4 , Figure 5 and Figure 8 In an embodiment, the sealing member 300 may include spacer particles 310. For example, each spacer particle 310 may include (e.g., is) an inorganic material such as silicon oxide and / or silicon nitride. The size (e.g., width, diameter, and / or volume) or average size of each spacer particle 310 may vary based on the size of the cell gap GP to be formed. As described above, the width of the third portion 303 of the sealing member 300 may be smaller than the width of the first portion 301 or the width of the second portion 302. Therefore, the cell gap GP between the first substrate 100 and the second substrate 200 can be sufficiently maintained.

[0102] Figure 9 It is a diagram. Figure 4 A magnified view of another example of region "A". Figure 10 The diagram is in Figure 4 A plan view of another example of a compensation structure included in a display device. For example, Figure 10 It can be Figure 9 Plan view of the compensation structure 270.

[0103] refer to Figure 9 and Figure 10In an embodiment, the compensation structure 270 may further include a third compensation structure 273 spaced apart from the first compensation structure 271 and the second compensation structure 272.

[0104] The third compensation structure 273 may be disposed in the peripheral region PA on the first base substrate 210. The third compensation structure 273 may be spaced apart from the second compensation structure 272 and may be disposed around (e.g., surrounding) the second compensation structure 272 in a plan view. For example, the third compensation structure 273 may have a hollow rectangular shape (e.g., a rectangular frame shape) in a plan view. For example, the third compensation structure 273 may have a line shape extending around (e.g., surrounding) the second compensation structure 272 in a plan view. For example, the width of the third compensation structure 273 (e.g., the width in the left and right directions) may be smaller than the width of the first compensation structure 271. In some embodiments, the width of the third compensation structure 273 may refer to the width along a horizontal direction in a plan view, which is orthogonal (e.g., perpendicular) to the extension direction (e.g., the main extension direction) of the third compensation structure 273.

[0105] A second opening OP2 may be formed between the second compensation structure 272 and the third compensation structure 273. The second opening OP2 may be spaced apart from the first opening OP1 (e.g., spaced apart from the first opening OP1 in a plan view) and may be around the first opening OP1 in a plan view (e.g., surrounding the first opening OP1). For example, the second opening OP2 may have a hollow rectangular shape (e.g., a rectangular frame shape) in a plan view. For example, the second opening OP2 may have a line shape extending around the second compensation structure 272 (e.g., surrounding the second compensation structure 272). When a third compensation structure 273 (further forming the second opening OP2) spaced apart from the second compensation structure 272 is further included, the amount of foreign matter penetrating from the outside into the interior of the first compensation structure 271 can be further reduced.

[0106] At least a portion of the third compensation structure 273 and the second opening OP2 may overlap with the sealing member 300. For example, the sealing member 300 may continuously overlap with the first compensation structure 271, the first opening OP1, the second compensation structure 272, the second opening OP2, and the third compensation structure 273. For example, portions of the sealing member 300 may fill (e.g., completely fill) the first opening OP1 and the second opening OP2, respectively. For example, a protruding portion of the sealing member 300 may extend in the second opening OP2 between the second compensation structure 272 and the third compensation structure 273. The third compensation structure 273 may include (e.g., be) a material substantially the same as the material of the first compensation structure 271 and the second compensation structure 272.

[0107] Figures 11 to 16 This is a cross-sectional view illustrating a method of manufacturing a display device according to an embodiment. For example, Figures 11 to 16 It can be manufactured according to the diagram and reference. Figures 4 to 6 The method of the display device 10 described in the embodiment is therefore omitted from the description.

[0108] refer to Figure 11 The first color filter layer 222, the light-shielding layer 223, and the upper functional layer 232 can be formed on the first substrate 210. The first color filter layer 222 can be formed in the display area DA on the first substrate 210 (see [link]). Figure 3 More specifically, the first color filter layer 222 may be formed to overlap with the first light-emitting region LA1 included in each pixel region PXA. For example, the first color filter layer 222 may be formed of an organic polymer material including (e.g., is) a blue pigment.

[0109] A light-shielding layer 223 may be formed in a display area DA on the first substrate 210. More specifically, the light-shielding layer 223 may be formed to overlap with a light-shielding area BA included in each pixel area PXA. For example, the light-shielding layer 223 may be formed of an organic polymer material including (e.g., is) a blue pigment.

[0110] The upper functional layer 232 may be formed in the peripheral region PA on the first substrate 210. For example, the upper functional layer 232 may be formed of an organic polymer material including (for example,) a blue pigment.

[0111] In the embodiments, the first color filter layer 222, the light-shielding layer 223, and the upper functional layer 232 can be formed substantially simultaneously (or concurrently). For example, the organic layer can be formed from an organic polymer material including (e.g., a blue pigment), and the organic layer can be patterned by photolithography or the like to form the first color filter layer 222, the light-shielding layer 223, and the upper functional layer 232 substantially simultaneously (or concurrently).

[0112] refer to Figure 12 The second color filter layer 224 and the lower functional layer 234 can be formed on the first substrate 210. The second color filter layer 224 can be formed in the display area DA on the first substrate 210. More specifically, the second color filter layer 224 can be formed to overlap with the second light-emitting area LA2 included in each pixel area PXA. For example, the second color filter layer 224 can be formed of an organic polymer material including (e.g., is) a red pigment.

[0113] The lower functional layer 234 may be formed in the peripheral region PA on the first substrate 210. For example, the lower functional layer 234 may be formed of an organic polymer material including (e.g.) a red pigment.

[0114] In an embodiment, the second color filter layer 224 and the lower functional layer 234 may be formed substantially simultaneously (or concurrently). For example, the organic layer may be formed of an organic polymer material including (e.g., a red pigment), and the organic layer may be patterned by photolithography or the like to form the second color filter layer 224 and the lower functional layer 234 substantially simultaneously (or concurrently).

[0115] Subsequently, a third color filter layer 226 may be formed on the first substrate 210, but this disclosure is not limited thereto. For example, the third color filter layer 226 may be formed before the formation of the second color filter layer 224 and the lower functional layer 234. The third color filter layer 226 may be formed in the display area DA on the first substrate 210. More specifically, the third color filter layer 226 may be formed to overlap with a third light-emitting area LA3 included in each pixel area PXA. For example, the third color filter layer 226 may be formed of an organic polymer material including (e.g., is) a green pigment. Additionally, in some embodiments, a functional layer including (e.g., is) a material substantially the same as the material of the third color filter layer 226 may be further formed in the peripheral area PA on the first substrate 210.

[0116] refer to Figure 13 The first capping layer 240 may be formed on the first substrate 210. On the first substrate 210, the first capping layer 240 may be formed entirely in the display area DA and the peripheral area PA (e.g., formed in the entire display area DA and the peripheral area PA and / or formed only in the display area DA and the peripheral area PA).

[0117] The first capping layer 240 may include (e.g., is) an inorganic material such as silicon oxide and / or silicon nitride. The first capping layer 240 may cover the first to third color filter layers 222, 224, 226, the light-shielding layer 223, and the functional layer 230. For example, the first capping layer 240 may be formed to have substantially the same thickness along the contours of the first to third color filter layers 222, 224, 226, the light-shielding layer 223, and the functional layer 230.

[0118] refer to Figure 14The partition wall 260, the first compensation structure 271, and the second compensation structure 272 can be formed on the first substrate 210. The partition wall 260 can be formed in the display area DA on the first substrate 210. More specifically, the partition wall 260 can be formed on the first substrate 210 to completely overlap with the light-shielding area BA included in each pixel area PXA (e.g., overlap with the entire light-shielding area BA included in each pixel area PXA and / or overlap only with the light-shielding area BA included in each pixel area PXA). For example, the partition wall 260 can be formed of an organic polymer material including (e.g., is) black pigment.

[0119] The partition 260 can be formed to expose each of the first to third light-emitting regions LA1, LA2 and LA3 in each pixel region PXA. For example, fourth to sixth openings OP4, OP5 and OP6, which overlap with each of the first to third light-emitting regions LA1, LA2 and LA3 respectively, can be formed in the partition 260.

[0120] The first compensation structure 271 and the second compensation structure 272 can be formed in the peripheral region PA on the first substrate 210. For example, the first compensation structure 271 can be formed around the display region DA in a plan view (e.g., surrounding the display region DA). The second compensation structure 272 can be formed spaced apart from the first compensation structure 271 and around the first compensation structure 271 in a plan view (e.g., surrounding the first compensation structure 271). Therefore, a first opening OP1 can be formed between the first compensation structure 271 and the second compensation structure 272. Each of the first compensation structure 271 and the second compensation structure 272 can be formed to have a substantially flat upper surface (e.g., as shown in the figure). Figure 14 The upper surface of each of the first compensation structure 271 and the second compensation structure 272 shown is, for example, the surface facing away from the first substrate 210. For example, the first compensation structure 271 and the second compensation structure 272 may be formed of an organic polymer material including, for example, a black pigment.

[0121] In the embodiments, the partition wall 260, the first compensation structure 271, and the second compensation structure 272 can be formed substantially simultaneously (or concurrently). For example, the organic layer can be formed from an organic polymer material including (e.g., a black pigment), and the organic layer can be patterned by photolithography or the like to form the partition wall 260, the first compensation structure 271, and the second compensation structure 272 substantially simultaneously (or concurrently).

[0122] Subsequently, a first color conversion layer 252, a second color conversion layer 254, and a transmissive layer 256 can be formed on the first substrate 210. The first color conversion layer 252, the second color conversion layer 254, and the transmissive layer 256 can be formed in the display area DA on the first substrate 210. More specifically, the first color conversion layer 252 can be formed to overlap with a second light-emitting area LA2 in each pixel area PXA, the second color conversion layer 254 can be formed to overlap with a third light-emitting area LA3 in each pixel area PXA, and the transmissive layer 256 can be formed to overlap with a first light-emitting area LA1 in each pixel area PXA.

[0123] In this embodiment, the first color conversion layer 252, the second color conversion layer 254, and the transmissive layer 256 can be formed by an inkjet process. For example, ink comprising (e.g., is) corresponding components (e.g., corresponding wavelength conversion particles) can be provided in the fourth to sixth openings OP4, OP5, and OP6 formed in the display area DA. The ink can be provided using (e.g., an inkjet printing apparatus). The inkjet printing apparatus may include a head containing a plurality of nozzles 410. The inkjet printing apparatus can provide ink into the fourth to sixth openings OP4, OP5, and OP6 through the plurality of nozzles 410. Therefore, the fourth to sixth openings OP4, OP5, and OP6 can be filled with corresponding components. The components in the fourth to sixth openings OP4, OP5, and OP6 can be cured to form the first color conversion layer 252, the second color conversion layer 254, and the transmissive layer 256. For example, the components can be thermally and / or photocured.

[0124] refer to Figure 15 The second capping layer 280 may be formed on the first substrate 210. On the first substrate 210, the second capping layer 280 may be formed entirely in the display area DA and the peripheral area PA (e.g., formed in the entire display area DA and the peripheral area PA and / or formed only in the display area DA and the peripheral area PA).

[0125] The second capping layer 280 may include (e.g., is) an inorganic material such as silicon oxide and / or silicon nitride. The second capping layer 280 may cover the first color conversion layer 252 and the second color conversion layer 254, the transmission layer 256, the partition 260, the first compensation structure 271, and the second compensation structure 272. For example, the second capping layer 280 may be formed to have substantially the same thickness along the contours of the first color conversion layer 252 and the second color conversion layer 254, the transmission layer 256, the partition 260, the first compensation structure 271, and the second compensation structure 272. In some embodiments, the second capping layer 280 may be further formed in the first opening OP1, for example, on the surface of the first capping layer 240 exposed by the first opening OP1 and on part or all of the side surface of the compensation structure 270 forming the first opening OP1.

[0126] refer to Figure 16 The first substrate 100 and the second substrate 200 can be joined together by a sealing member 300. The sealing member 300 can be disposed in the peripheral region PA between the first substrate 100 and the second substrate 200. For example, the sealing member 300 can overlap with at least a portion of the first compensation structure 271, at least a portion of the second compensation structure 272, and the first opening OP1. A portion of the sealing member 300 can fill the first opening OP1.

[0127] The filler member 320 may be disposed between the first substrate 100 and the second substrate 200. The filler member 320 may include (e.g., is) an organic material such as silicone resin and / or epoxy resin. Additionally, the filler member 320 may include (e.g., is) a suitable and / or appropriate material for matching the refractive index. For example, the refractive index of the filler member 320 may match the refractive index of the first substrate 100 and / or the refractive index of the second capping layer 280 (e.g., substantially the same as the refractive index of the first substrate 100 and / or the refractive index of the second capping layer 280).

[0128] Figure 17 This is a cross-sectional view of a display device according to another embodiment. Figure 18 It is a diagram. Figure 17 A magnified view of region "B".

[0129] refer to Figure 17 and Figure 18According to another embodiment, the display device 11 may include a first substrate 100, a second substrate 2000, and a sealing member 300. The second substrate 2000 may include a first base substrate 210, first to third color filter layers 222, 224, and 226, a light-shielding layer 223, a functional layer 2300, a first capping layer 240, a first color conversion layer 252 and a second color conversion layer 254, a transmissive layer 256, a partition 260, a compensation structure 270, and a second capping layer 280. The display device 11 according to another embodiment can be used with... (The text abruptly ends here, likely due to an incomplete sentence or missing information.) Figures 4 to 6 The display device 10 described in the embodiments is substantially the same or similar to that described above, except for the functional layer 2300. Therefore, repeated descriptions are not required.

[0130] The functional layer 2300 may be disposed in the peripheral region PA on the first substrate 210. The functional layer 2300 may include (e.g., be) an organic material and may prevent or reduce the reflection of external light incident on the first substrate 210 from the outside.

[0131] Functional layer 2300 may have a single-layer or multi-layer structure. For example, functional layer 2300 may include an upper functional layer 2320 and a lower functional layer 2340. The upper functional layer 2320 may include (e.g., is) a material substantially the same as the material of the first color filter layer 222. The lower functional layer 2340 may include (e.g., is) a material substantially the same as the material of the second color filter layer 224. However, embodiments are not limited thereto, and functional layer 2300 may have a single-layer structure or a multi-layer structure with three or more layers.

[0132] The upper functional layer 2320 may include a first upper functional layer 2321 and a second upper functional layer 2322 spaced apart from the first upper functional layer 2321 (e.g., spaced apart from the first upper functional layer 2321 in a plan view). A third opening OP3 may be formed between the first upper functional layer 2321 and the second upper functional layer 2322. The first upper functional layer 2321 may be disposed in a peripheral region PA on the first substrate 210. The first upper functional layer 2321 may be in the display area DA (see...). Figure 3 The first upper functional layer 2321 may have a hollow rectangular shape (e.g., a rectangular frame shape) in a plan view. Alternatively, the first upper functional layer 2321 may have a line shape extending around (e.g., around) the display area DA.

[0133] The second upper functional layer 2322 may be disposed in the peripheral region PA on the first substrate 210. The second upper functional layer 2322 may be spaced apart from the first upper functional layer 2321 and may surround (e.g., around) the first upper functional layer 2321 in a plan view. For example, the second upper functional layer 2322 may have a hollow rectangular shape (e.g., a rectangular frame shape) in a plan view. For example, the second upper functional layer 2322 may have a line shape extending around (e.g., around) the first upper functional layer 2321. For example, the width of the second upper functional layer 2322 (e.g., the width in the left and right directions) may be smaller than the width of the first upper functional layer 2321. In some embodiments, the widths of the first upper functional layer 2321 and the second upper functional layer 2322 may refer to widths along a horizontal direction in a plan view, which is orthogonal (e.g., perpendicular) to the extension directions (e.g., main extension directions) of the first and second upper functional layers 2321, respectively.

[0134] A third opening OP3 can be formed between the first upper functional layer 2321 and the second upper functional layer 2322. The third opening OP3 can be located in the peripheral region PA. The third opening OP3 can be spaced apart from the display region DA and can be around the display region DA in a plan view (e.g., surrounding the display region DA). For example, the third opening OP3 can have a hollow rectangular shape (e.g., a rectangular frame shape) in a plan view. For example, the third opening OP3 can have a line shape extending around (e.g., around) the first upper functional layer 2321. For example, as... Figure 18 As shown in the diagram, the third opening OP3 can overlap with the second compensation structure 272. Alternatively, the third opening OP3 can overlap with the first opening OP1 and / or the first compensation structure 271.

[0135] The lower functional layer 2340 may include a first lower functional layer 2341 and a second lower functional layer 2342 spaced apart from the first lower functional layer 2341 (e.g., spaced apart from the first lower functional layer 2341 in a plan view). The first lower functional layer 2341 may overlap with a first upper functional layer 2321, and the second lower functional layer 2342 may overlap with a second upper functional layer 2322. For example, the lower functional layer 2340 may have a shape substantially the same as or similar to that of the upper functional layer 2320 in a plan view. The lower functional layer 2340 may expose a third opening OP3. The first upper functional layer 2321 and the first lower functional layer 2341 may be referred to as the first functional layer, and the second upper functional layer 2322 and the second lower functional layer 2342 may be referred to as the second functional layer.

[0136] The first capping layer 240 may be arranged in a portion of the peripheral region PA to cover the functional layer 2300. For example, the first capping layer 240 may be arranged to have substantially the same thickness along the contour of the functional layer 2300.

[0137] For example, such as Figure 18 As shown in the figure, the first capping layer 240 can cover the lower surface 2341a of the first lower functional layer 2341 facing the first substrate 100, the lower surface 2342a of the second lower functional layer 2342 facing the first substrate 100, and the lower surface of the first base substrate 210 that overlaps with the third opening OP3.

[0138] In an embodiment, the first capping layer 240 may expose the outer surfaces 2322b and 2342b of the second functional layers 2322 and 2342 (e.g., the side surfaces of the second functional layers 2322 and 2342 that are away from the display area DA in a plan view). For example, in the manufacturing process of the display device 11, when along a cutting line located in the peripheral region PA (e.g., Figure 24 When the cutting line SL cuts the exterior of the second substrate 2000, the first capping layer 240 may expose the outer surfaces 2322b and 2342b of the second functional layers 2322 and 2342. In this case, foreign matter such as moisture may penetrate from the outside into the interior of the second functional layers 2322 and 2342 through the outer surfaces 2322b and 2342b.

[0139] The first cover layer 240 may completely cover the inner surface of the third opening OP3 (e.g., cover the entire inner surface of the third opening OP3 and / or only cover the inner surface of the third opening OP3). For example, the first cover layer 240 may cover the outer surfaces 2321b and 2341b of the first functional layers 2321 and 2341 adjacent to the second functional layers 2322 and 2342 (e.g., the side surfaces of the first functional layers 2321 and 2341 facing away from the display area DA in a plan view). The first cover layer 240 may further cover the inner surfaces 2322c and 2342c of the second functional layers 2322 and 2342 adjacent to the first functional layers 2321 and 2341 (e.g., the side surfaces of the second functional layers 2322 and 2342 facing the display area DA in a plan view). Therefore, the first capping layer 240 can prevent or reduce the penetration of foreign matter from the interior of the second functional layers 2322 and 2342 into the interior of the first functional layers 2321 and 2341.

[0140] Figures 19 to 25 This is a cross-sectional view illustrating a method of manufacturing a display device according to another embodiment. For example, Figures 19 to 25 It can be manufactured according to the diagram and reference. Figure 17 and Figure 18 Another embodiment of the display device 11 described herein. It is not necessary to provide information regarding the method described in the reference. Figures 11 to 16 The method of manufacturing the display device 10 according to the described embodiment is described again.

[0141] refer to Figure 19 The first color filter layer 222, the light-shielding layer 223, the first upper functional layer 2321, and the second upper functional layer 2322 can be formed on the first substrate 210. The first upper functional layer 2321 and the second upper functional layer 2322 can be formed in the peripheral region PA on the first substrate 210. For example, the first upper functional layer 2321 can be formed in the display region DA in the plan view (see...). Figure 3 The second upper functional layer 2322 can be formed spaced apart from the first upper functional layer 2321 and, in a plan view, surround (e.g., around) the first upper functional layer 2321. Therefore, a third opening OP3 can be formed between the first upper functional layer 2321 and the second upper functional layer 2322. In an embodiment, the first color filter layer 222, the light-shielding layer 223, the first upper functional layer 2321, and the second upper functional layer 2322 can be formed substantially simultaneously (or concurrently).

[0142] refer to Figure 20 The second color filter layer 224, the first lower functional layer 2341, and the second lower functional layer 2342 can be formed on the first substrate 210. The first lower functional layer 2341 and the second lower functional layer 2342 can be formed in the peripheral region PA on the first substrate 210. For example, the first lower functional layer 2341 can be formed to overlap with the first upper functional layer 2321, and the second lower functional layer 2342 can be formed to overlap with the second upper functional layer 2322. The first lower functional layer 2341 and the second lower functional layer 2342 can expose the third opening OP3. In an embodiment, the second color filter layer 224, the first lower functional layer 2341, and the second lower functional layer 2342 can be formed substantially simultaneously (or concurrently). The third color filter layer 226 can also be formed on the first substrate 210.

[0143] refer to Figure 21A first capping layer 240 may be formed on a first substrate 210. On the first substrate 210, the first capping layer 240 may be formed entirely within the display area DA and the peripheral area PA (e.g., formed throughout the entire display area DA and the peripheral area PA and / or formed only within the display area DA and the peripheral area PA). The first capping layer 240 may cover the first to third color filter layers 222, 224, 226, the light-shielding layer 223, the first upper functional layer 2321, the second upper functional layer 2322, the first lower functional layer 2341, and the second lower functional layer 2342. For example, the first capping layer 240 may be formed to have substantially the same thickness along the contours of the first to third color filter layers 222, 224, 226, the light-shielding layer 223, the first upper functional layer 2321, the second upper functional layer 2322, the first lower functional layer 2341, and the second lower functional layer 2342.

[0144] refer to Figure 22 The partition wall 260, the first compensation structure 271 and the second compensation structure 272, the first color conversion layer 252 and the second color conversion layer 254, and the transmission layer 256 can be formed on the first substrate 210. A first opening OP1 can be formed between the first compensation structure 271 and the second compensation structure 272. A portion of the second compensation structure 272 can be located in a third opening OP3. For example, a protruding portion of the second compensation structure 272 can extend between the first lower functional layer 2341 and the second lower functional layer 2342, and the protruding portion can also extend between the first upper functional layer 2321 and the second upper functional layer 2322. Each of the first compensation structure 271 and the second compensation structure 272 can be formed to have a substantially flat upper surface (e.g., as shown in the image). Figure 22 The upper surface of each of the first compensation structure 271 and the second compensation structure 272 shown is, for example, the surface facing away from the first substrate 210.

[0145] refer to Figure 23The second capping layer 280 can be formed on the first substrate 210. On the first substrate 210, the second capping layer 280 can be formed entirely within the display area DA and the peripheral area PA (e.g., formed throughout the entire display area DA and the peripheral area PA and / or formed only within the display area DA and the peripheral area PA). The second capping layer 280 can cover the first color conversion layer 252 and the second color conversion layer 254, the transmissive layer 256, the partition 260, the first compensation structure 271, and the second compensation structure 272. The second capping layer 280 can also cover the first opening OP1, for example, covering the portion of the first capping layer 240 exposed by the first opening OP1 and the side of the compensation structure 270 forming the first opening OP1. For example, the second capping layer 280 can be formed to have substantially the same thickness along the contours of the first color conversion layer 252 and the second color conversion layer 254, the transmissive layer 256, the partition 260, the first compensation structure 271, and the second compensation structure 272.

[0146] refer to Figure 24 The first substrate 100 and the second substrate 2000 can be joined by a sealing member 300. The sealing member 300 can be disposed in the peripheral region PA between the first substrate 100 and the second substrate 2000. For example, the sealing member 300 can overlap with at least a portion of the first compensation structure 271, at least a portion of the second compensation structure 272, and the first opening OP1. A portion of the sealing member 300 can fill the first opening OP1.

[0147] refer to Figure 24 and Figure 25 The first substrate 100 and the second substrate 2000 can be cut along a cutting line SL. For example, the cutting line SL can be located in the peripheral region PA. The cutting line SL can be a rectangle around the display region DA (e.g., surrounding the display region DA) and spaced apart from the display region DA in a plan view. When the first substrate 100 and the second substrate 2000 are cut along the cutting line SL, the width of the peripheral region PA of the display device 11 can be reduced.

[0148] Figure 26 This is a cross-sectional view of a display device according to an embodiment.

[0149] refer to Figure 26 In this embodiment, the display device may include a first substrate 100 and a second substrate 200.

[0150] The first substrate 100 may include driving elements TR1, TR2, and TR3 disposed on the second substrate 110. The driving elements TR1, TR2, and TR3 may be electrically coupled (e.g., connected) to a light-emitting element (e.g., a corresponding light-emitting element). For example, the light-emitting element may be an organic light-emitting diode (OLED). Alternatively, the light-emitting element may be a nano-LED. However, the embodiments are not limited thereto.

[0151] In an embodiment, each of the driving elements TR1, TR2, and TR3 may include at least one thin-film transistor. For example, the channel layer of the thin-film transistor may include (e.g.) amorphous silicon, polycrystalline silicon, and / or metal-oxide-semiconductor, etc.

[0152] Each of the driving elements TR1, TR2, and TR3 may be covered by the insulating structure 120. The insulating structure 120 may include a combination of inorganic and organic insulating layers. The insulating structure 120 may have openings (e.g., contact holes) exposing the driving elements TR1, TR2, and TR3, through which the light-emitting elements may be electrically coupled (e.g., connected) to the respective driving elements TR1, TR2, and TR3.

[0153] In some embodiments, the light-emitting element (e.g., an organic light-emitting diode) may include a first electrode EL1, a second electrode EL2, and an emitting layer OL disposed between the first electrode EL1 and the second electrode EL2.

[0154] The first electrode EL1 can be used as an anode. For example, depending on the emission type (e.g., emission class) of the display device, the first electrode EL1 can be formed as a transmission electrode or a reflection electrode.

[0155] A pixel defining layer (PDL) can be disposed on the insulating structure 120. The pixel defining layer (PDL) may have an opening that exposes at least a portion of the first electrode EL1. For example, the pixel defining layer (PDL) may cover a portion (e.g., a side portion) of the first electrode EL1 and may expose another portion (e.g., a central portion) of the first electrode EL1. For example, the pixel defining layer (PDL) may comprise (e.g., is) an organic insulating material. At least a portion of the emitter layer (OL) may be disposed in the opening of the pixel defining layer (PDL). In an embodiment, the emitter layer (OL) may be disposed in the display area DA (see...). Figure 1 It extends continuously over multiple pixels in a given area. For example, the emission layer OL can be a common layer. In another embodiment, the emission layer OL can be separate from the emission layers of neighboring pixels.

[0156] The emitting layer OL may include one or more functional layers, such as a hole injection layer, a hole transport layer, an organic light-emitting layer, an electron transport layer, and / or an electron injection layer. In some embodiments, the emitting layer OL may include (e.g.,) low molecular weight organic compounds and / or high molecular weight organic compounds.

[0157] In one embodiment, the emission layer OL can generate blue light. However, the embodiment is not limited to this. For example, the emission layer OL can generate red light and / or green light, etc. In another embodiment, the emission layer OL can generate light of different colors in different pixels.

[0158] Depending on the emission type (e.g., emission class) of the display device, the second electrode EL2 can be formed as a transmissive electrode or a reflective electrode. For example, the second electrode EL2 may include (e.g., be) a metal, a metal alloy, a metal nitride, a metal fluoride, a conductive metal oxide, or a combination thereof. For example, the second electrode EL2 may extend continuously over multiple pixels in the display area DA.

[0159] The first substrate 100 may further include an encapsulation layer 130 covering the pixel array. The encapsulation layer 130 may extend continuously to cover the display area DA (e.g., the entire display area DA).

[0160] For example, encapsulation layer 130 may include a stacked structure of organic and inorganic thin films. For example, such as Figure 26 As illustrated, the encapsulation layer 130 may include a first inorganic film 132, an organic film 134 disposed on the first inorganic film 132, and a second inorganic film 136 disposed on the organic film 134. However, the embodiments are not limited thereto. For example, the encapsulation layer 130 may have a structure comprising at least two organic films and at least three inorganic films.

[0161] For example, organic film 134 may include (e.g., is) a cured resin such as polyacrylate and / or epoxy resin. For example, the cured resin may be formed by a crosslinking reaction of monomers. For example, each of the first inorganic film 132 and the second inorganic film 136 may include (e.g., is) an inorganic material such as silicon oxide, silicon nitride, silicon carbide, aluminum oxide, tantalum oxide, hafnium oxide, zirconium oxide and / or titanium oxide.

[0162] according to Figure 26 The second substrate 200 of the embodiment can be used with reference to the reference. Figures 4 to 6 The second substrate 200 of the described embodiments is substantially the same or similar. Therefore, a repeated description is not necessary.

[0163] Figure 27 This is a cross-sectional view of a display device according to another embodiment.

[0164] refer to Figure 27 In another embodiment, the display device may include a display panel and a backlight assembly 600. The display panel may include a first substrate 100 and a second substrate 202.

[0165] The first substrate 100 may include a pixel array. The liquid crystal layer 500 may be inserted between the first substrate 100 and the second substrate 202.

[0166] Each pixel may include driving elements TR1, TR2, and TR3 and a pixel electrode PE electrically coupled (e.g., connected) to the driving elements TR1, TR2, and TR3. The second substrate 202 may include a common electrode CE. However, embodiments are not limited thereto. For example, the common electrode CE may be included in the first substrate 100.

[0167] The first alignment layer AL1 can be disposed on the pixel electrode PE. The second alignment layer AL2 can be disposed on the common electrode CE. The first alignment layer AL1 and the second alignment layer AL2 may include (e.g., are) polymers such as polyimide, and can be processed by friction and / or photo-alignment to have a set or predetermined tilt angle, etc.

[0168] The second substrate 202 may have a substantially the same configuration as the previously described color conversion substrate, except that it further includes a common electrode CE and a second alignment layer AL2.

[0169] The second substrate 202 can be coupled according to the reference. Figures 4 to 6 The second substrate 200 of the described embodiment is substantially the same or similar, except that it further includes a common electrode CE and a second alignment layer AL2. Therefore, a repeated description is not necessary.

[0170] In response to the operation of driving elements TR1, TR2, and TR3, a pixel voltage can be applied to the pixel electrode PE. A common voltage can be applied to the common electrode CE. The orientation of liquid crystal molecules in the liquid crystal layer 500 can be adjusted by the electric field formed by the difference between the pixel voltage and the common voltage. As a result, the transmittance of the incident light L1 provided by the backlight assembly 600 can be controlled.

[0171] While specific embodiments and implementations have been described herein, other embodiments and modifications will be apparent from this description. Therefore, this disclosure is not limited to such embodiments, but is limited to the broader scope of the appended claims, their equivalents, and various suitable and obvious modifications and equivalent arrangements that will be apparent to those skilled in the art.

Claims

1. A display device, comprising: The first substrate includes a pixel array; The second substrate is connected to the first substrate; as well as A sealing member is located between the first substrate and the second substrate, and The second substrate includes: The substrate includes a display area overlapping the pixel array and a peripheral area surrounding the display area; The first compensation structure, in the peripheral region, on the substrate, at least partially overlaps with the sealing member and comprises an organic material; The second compensation structure is located in the peripheral region, on the base plate, spaced apart from the first compensation structure, at least partially overlapping the sealing member, and comprises the same material as the first compensation structure. A first capping layer covers the first compensation structure and the second compensation structure and includes inorganic materials; A functional layer, comprising organic material, in the peripheral region, between the substrate and the first compensation structure, and between the substrate and the second compensation structure; and A second capping layer covers the functional layer and comprises inorganic material, wherein the second compensation structure surrounds the first compensation structure, and The functional layer includes: A first functional layer, surrounding the display area; and The second functional layer is spaced apart from the first functional layer and surrounds the first functional layer.

2. The display device according to claim 1, wherein, A portion of the sealing member is located in a first opening between the first compensation structure and the second compensation structure.

3. The display device according to claim 1, wherein, The first compensation structure is located around the display area, and The second compensation structure is located around the first compensation structure.

4. The display device according to claim 3, wherein, The second compensation structure is smaller in width than the first compensation structure.

5. The display device according to claim 3, wherein, A through-hole that exposes a portion of the first compensation structure is in the second compensation structure.

6. The display device according to claim 3, wherein, The second substrate further includes: The third compensation structure, located in the peripheral region, on the substrate, spaced apart from the second compensation structure, at least partially overlapping the sealing member, and comprising the same material as the first compensation structure; and A portion of the sealing member is located in a second opening between the second compensation structure and the third compensation structure.

7. The display device according to any one of claims 1 to 6, wherein, The second substrate further includes: A color conversion layer, located in the display area and on the substrate, includes wavelength conversion particles for changing the wavelength of incident light to emit light having a color different from the incident light; and The partition wall is located in the display area, on the substrate, and around the color conversion layer. The material of the first compensation structure is the same as the material of the partition wall.

8. The display device according to any one of claims 1 to 6, wherein, The third opening between the first functional layer and the second functional layer overlaps with the second compensation structure.

9. The display device according to any one of claims 1 to 6, wherein, The sealing component includes: The first part overlaps with the first compensation structure; The second part overlaps with the second compensation structure; and The third part overlaps with the first opening between the first compensation structure and the second compensation structure, and The third portion is smaller in width than the first portion or the second portion.

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