Display devices

Abstract

A display device including an optical component, such as a camera, is described. According to an exemplary embodiment, the display device includes: a substrate overlapping a light-transmitting area, a display area surrounding the light-transmitting area, and a boundary area disposed between the light-transmitting area and the display area; a first light-shielding member disposed on the substrate and overlapping the boundary area; a window overlapping the substrate; and a second light-shielding member disposed between the first light-shielding member and the window and overlapping the boundary area, wherein the first light-shielding member includes a first opening overlapping the light-transmitting area, the second light-shielding member includes a second opening overlapping the light-transmitting area, and the diameter of the first opening is larger than the diameter of the second opening.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2019-0025811 filed in the Korean Intellectual Property Office on March 6, 2019, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to a display device. Background Art

[0004] A display device such as a liquid crystal display (LCD) or a light emitting diode (LED) display may include a display panel that uses a plurality of pixels that can display an image. Each pixel includes a pixel electrode that receives a data signal. The pixel electrode is connected to at least one transistor and receives the data signal from the aforementioned transistor.

[0005] In recent years, there has been significant development in display devices that have camera functions in addition to video display. Traditionally, optical components such as cameras or infrared sensors are located outside the display area of ​​the display device. As a result, the space in which the display device can display images can be reduced.

[0006] The above information disclosed in this Background section is for enhancement of understanding of the background of the disclosure and therefore this disclosure may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art. Summary of the Invention

[0007] Exemplary embodiments have been directed to providing a display device including an optical member surrounded by a display area, and in particular, providing a display device in which a peripheral area of ​​the optical member is not visible to a user.

[0008] A display device according to an exemplary embodiment includes: a substrate that overlaps a light-transmitting area, a display area surrounding the light-transmitting area, and a boundary area arranged between the light-transmitting area and the display area; a first light-shielding member that is arranged on the substrate and overlaps the boundary area; a window that overlaps the substrate; and a second light-shielding member that is arranged between the first light-shielding member and the window and overlaps the boundary area, wherein the first light-shielding member includes a first opening that overlaps the light-transmitting area, the second light-shielding member includes a second opening that overlaps the light-transmitting area, and a diameter of the first opening is larger than a diameter of the second opening.

[0009] The first light blocking member may include a first outer edge and a first inner edge forming the first opening, and the first inner edge may overlap with the second light blocking member.

[0010] The second light blocking member may include a second outer edge and a second inner edge forming the second opening, and the second outer edge may overlap with the first light blocking member.

[0011] The first outer edge may be aligned with an edge of the border region.

[0012] The second inner edge may be aligned with an edge of the border area.

[0013] The display apparatus may further include an optical member overlapping the light-transmitting area.

[0014] The width of the optical member may be smaller than the width of the light-transmitting region.

[0015] The diameter of the optical member may be smaller than the diameter of the second opening.

[0016] In the display area, a thin film transistor disposed on a substrate, a pixel electrode connected to the thin film transistor, a common electrode overlapping the pixel electrode, and an emission layer disposed between the pixel electrode and the common electrode may be disposed.

[0017] The display device may further include a partition wall overlapping at least a portion of the pixel electrode, wherein the first light blocking member may be arranged on the partition wall.

[0018] At least a portion of the common electrode may be disposed on the first light blocking member.

[0019] The display device may further include an encapsulation layer disposed on the common electrode.

[0020] The display device may further include an encapsulation layer disposed on the common electrode, wherein the first light blocking member may be disposed on the encapsulation layer.

[0021] The substrate may include a through hole overlapping the optical member.

[0022] The optical member may overlap with the substrate.

[0023] A display device according to an exemplary embodiment includes: a substrate that overlaps a light-transmitting area, a display area surrounding the light-transmitting area, and a boundary area arranged between the light-transmitting area and the display area; a first light-shielding member that is arranged on the substrate and overlaps the boundary area; a window that overlaps the substrate; and a second light-shielding member that is arranged between the first light-shielding member and the window and overlaps the boundary area, and an edge of the boundary area overlaps an edge of the first light-shielding member and an edge of the second light-shielding member.

[0024] The first light blocking member may be disposed adjacent to the display area, and the second light blocking member may be disposed adjacent to the light transmitting area.

[0025] The display device may further include an adhesive layer disposed between the first light blocking member and the second light blocking member.

[0026] According to exemplary embodiments, a peripheral area of ​​an optical member surrounded by a display device can be prevented from being seen, and a display device having improved display quality can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic top view of a display device according to an exemplary embodiment.

[0028] Figure 2 It is along Figure 1 Schematic cross-sectional view of the display device cut along line II-II'.

[0029] Figure 3 yes Figure 2 A cross-sectional view of a portion of an exemplary embodiment of the present invention.

[0030] Figure 4 yes Figure 2 A cross-sectional view of a portion of an exemplary embodiment of the present invention.

[0031] Figure 5 yes Figure 2 A cross-sectional view of a portion of an exemplary embodiment of the present invention.

[0032] Figure 6 It is along Figure 1 Schematic cross-sectional view of the display device cut along line II-II'.

[0033] Figure 7 yes Figure 6 A cross-sectional view of a portion of an exemplary embodiment of the present invention.

[0034] Figure 8 yes Figure 6 A cross-sectional view of a portion of an exemplary embodiment of the present invention.

[0035] Figure 9 yes Figure 6 A cross-sectional view of a portion of an exemplary embodiment of the present invention. DETAILED DESCRIPTION

[0036] In the following detailed description, certain exemplary embodiments of the present disclosure have been shown and described, simply by way of illustration. As those skilled in the art would realize, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present disclosure.

[0037] Accordingly, the drawings and description are to be regarded as illustrative in nature and not restrictive.Throughout the present disclosure, like reference numerals refer to like elements.

[0038] Furthermore, since the size and thickness of each element illustrated in the drawings are arbitrarily illustrated for the convenience of description, the present disclosure is not necessarily limited to those elements shown in the drawings. In the drawings, the thickness of layers, films, panels, regions, etc. are exaggerated for the sake of clarity. In addition, in the drawings, the thickness of some layers, films, panels, regions, etc. are exaggerated for the sake of convenience of description.

[0039] It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, the element can be directly on the other element, or there can be intervening elements. Conversely, when an element is referred to as being "directly" "on" another element, there are no intervening elements. The terms "on" or "above" mean being above or below a target portion, and do not necessarily mean being on the upper side of a target portion based on the direction of gravity.

[0040] In addition, unless explicitly described to the contrary, the word “comprise” and variations such as “comprises” or “comprising” will be understood to imply the inclusion of stated elements but not the exclusion of any other elements.

[0041] Further, in the present disclosure, the phrase “on a plane” means viewing a target portion from the top, and the phrase “on a cross section” means viewing a cross section formed by vertically cutting the target portion from the side.

[0042] Now refer to Figure 1 and Figure 2 A display device according to an exemplary embodiment is described. Figure 1 is a schematic top view of a display device according to an exemplary embodiment, and Figure 2 It is along Figure 1 Schematic cross-sectional view of the display device cut along line II-II'.

[0043] First, refer to Figure 1 , the display device 1 according to an exemplary embodiment may include an outer buffer area 201, a package bonding area 251, a display area DA, a light transmission area TA, and a boundary area BA disposed between the display area DA and the light transmission area TA.

[0044] The display area DA is an area in which a plurality of pixels are arranged and thus an image can be displayed. Each pixel includes a pixel circuit and an emission part that receives current from the pixel circuit and emits light.

[0045] The light transmission area TA has a relatively higher light transmittance than the display area DA or the outer buffer area 201, and does not have pixels arranged therein, and thus does not display an image. Since light is transmitted in the light transmission area TA, when at least one optical member 10 (refer to FIG. 1 ) is Figure 2) is arranged under the light transmission area TA, light may be incident on the optical member 10, or light may be emitted from the optical member 10. The optical member 10 may be provided as a camera, a flash, a sensor, etc. Hereinafter, the optical member 10 may be described by using a camera as an example, but this is not restrictive.

[0046] according to Figure 1 The light transmission area TA of the exemplary embodiment may be disposed in the display area DA. The light transmission area TA is surrounded by a plurality of pixels included in the display area DA.

[0047] Because the light-transmitting area TA is larger in size than each pixel, the light-transmitting area TA is different from the light-transmitting area formed in each pixel for realizing transparent display. For example, the area in which the pixel circuit is formed in each pixel may have a rectangular shape of 25 μm (horizontally) and 50 μm (vertically), but the light-transmitting area TA may have a circular shape with a diameter of 3 mm, but this is not restrictive.

[0048] The display device 1 according to the exemplary embodiment may include a boundary area BA arranged between the display area DA and the light transmission area TA. One or more light shielding members that block light may be arranged in the boundary area BA. This will be referred to as Figures 2 to 4 Describe in detail.

[0049] According to an embodiment of the present disclosure, two light shielding members may be arranged in the boundary area BA. The two light shielding members may be configured to prevent light (i.e., light generated by pixels of the display area DA) from passing through the boundary area BA into the light transmission area TA. This can improve the operation of optical members, such as cameras, by ensuring that light incident on (or from) the optical members does not mix with light from the display area DA.

[0050] The outer buffer area 201 surrounds the display area DA, the light transmission area TA, and the boundary area BA (for example, the outer buffer area 201 may surround the display area DA and the boundary area BA on all four sides in a plane perpendicular to the main viewing surface of the display device 1). Figure 1 In an exemplary embodiment of the present invention, the light transmission area TA is surrounded on all sides by the boundary area BA and the display area DA, and the outer buffer area 201 completely surrounds the display area DA.

[0051] In some cases, the encapsulation bonding region 251 surrounds the outer buffer region 201 on all sides. The encapsulation bonding region 251 may have an inorganic-inorganic encapsulation bonding structure bonded to a plurality of inorganic layers. The encapsulation bonding region 251 prevents moisture from flowing from the outside into the display area DA. In addition, the inorganic-inorganic encapsulation bonding region 251 may be formed using glass frit formed of an inorganic material bonded to an inorganic insulating layer (e.g., a gate insulating layer, etc.) disposed on the substrate 110.

[0052] In the following, reference will be made to Figure 1 and Figure 2 Describe the cross-sectional structure. Figure 2 is a simplified view between the substrate 110 and the window 500 included in the display device 1. Figure 2 , a pixel PX arranged in the display area DA and including a thin film transistor and a light emitting element is simply illustrated. Figure 3 The pixel PX is described in further detail.

[0053] The display apparatus 1 according to an exemplary embodiment may include a display area DA in which a plurality of pixels PX are arranged, a light transmission area TA overlapping the optical member 10 , and a boundary area BA arranged between the light transmission area TA and the display area DA.

[0054] The substrate 110 according to an exemplary embodiment may include a through hole H overlapping the light transmission area TA. The through hole H may also overlap a portion of the boundary area BA, but this is not restrictive. The through hole H may be adjusted depending on the size of the optical member 10.

[0055] A first light blocking member 111 overlapping the boundary area BA may be disposed on the substrate 110 and may also be disposed at the periphery of the light transmission area TA and the periphery of the display area DA. The first light blocking member 111 may also prevent light emitted from the pixel PX from being transmitted to the light transmission area TA and may include any material suitable for blocking light.

[0056] The first light blocking member 111 may include a first opening OP1 that overlaps with the light transmission area TA. However, the first light blocking member 111 may not overlap with the light transmission area TA. The planar size of the first opening OP1 may be larger than the planar size of the through hole H. In addition, the diameter of the first opening OP1 may be larger than the diameter of the through hole H, and the planar size of the first opening OP1 may be larger than the planar size of the optical member 10. The diameter or width of the first opening OP1 may be larger than the diameter or width of the optical member 10.

[0057] The first light blocking member 111 includes a first inner edge E1 that forms the first opening OP1 and a first outer edge E2 that faces the first inner edge E1. The first inner edge E1 may be positioned adjacent to the light-transmitting area TA, and the first outer edge E2 may be positioned adjacent to the display area DA. Therefore, the first light blocking member 111 may be positioned distinct from the display area DA, but at least a portion of the first light blocking member 111 may be positioned on the same horizontal plane as the pixel PX.

[0058] Although not shown in the drawings, the display device 1 may further include a planarization layer, a touch layer, and the like disposed above the plurality of pixels PX. The planarization layer and the touch layer (not shown) are not disposed in the light-transmitting area TA and may have an opening corresponding to the light-transmitting area TA. When the planarization layer and the touch layer (not shown) do not overlap with the light-transmitting area TA, the light transmittance of the light-transmitting area TA may be increased.

[0059] An adhesive layer 440 may be disposed between the substrate 110 and the window 500. The adhesive layer 440 allows the substrate 110 and the window 500 to adhere to each other. The adhesive layer 440 may not be formed in a portion overlapping with the light transmission area TA. However, depending on the exemplary embodiment, an optically transparent adhesive layer 440 may be formed in the light transmission area TA.

[0060] The second light blocking member 222 may be formed on a side of the substrate 110 facing the window 500, may contact the adhesive layer 440, and may be arranged at the periphery of the light-transmitting area TA and the periphery of the display area DA. In addition, the second light blocking member 222 may overlap with the boundary area BA and may also prevent light emitted from the pixel PX from transmitting to the light-transmitting area TA, and may include any suitable material for blocking light. In some cases, the second light blocking member 222 may be located within the same vertical region occupied by the adhesive layer 440 (i.e., such that the top surface of the second light blocking member 222 is parallel to the top surface of the adhesive layer 440).

[0061] The second light-blocking member 222 may include a second opening OP2 that overlaps with the light-transmitting area TA. In some examples, the light-transmitting area TA is defined by the second opening OP2. Therefore, the second light-blocking member 222 may not overlap with the light-transmitting area TA. In an exemplary embodiment, the planar dimensions of the second opening OP2 may be smaller than the planar dimensions of the through-hole H. The diameter of the second opening OP2 may be smaller than the diameter of the through-hole H. Furthermore, the planar dimensions of the second opening OP2 may be larger than the planar dimensions of the optical member 10 positioned therein. The diameter of the second opening OP2 may be larger than the diameter or width of the optical member 10.

[0062] The second light blocking member 222 may include a second inner edge E3 forming the second opening OP2 and a second outer edge E4 facing the second inner edge E3. The second inner edge E3 may be disposed adjacent to the light transmission area TA, and the second outer edge E4 may be disposed adjacent to the display area DA.

[0063] The first inner edge E1 of the first light blocking member 111 may overlap with the second light blocking member 222. The term "overlap" here refers to overlapping horizontally relative to the viewing surface of the display device, such that a vertical line perpendicular to the viewing surface extends through both portions. The first outer edge E2 of the first light blocking member 111 may overlap with an edge of the boundary area BA. In some cases, the first outer edge E2 does not overlap with the second light blocking member 222.

[0064] A second inner edge E3 of the second light blocking member 222 may overlap with an edge of the boundary area BA. A second outer edge E4 of the second light blocking member 222 may overlap with the first light blocking member 111.

[0065] Therefore, at least a portion of the second light shielding member 222 and the first light shielding member 111 may overlap. While the present disclosure illustrates an exemplary embodiment in which the first and second light shielding members 111 and 222 partially overlap, this is not intended to be limiting. Depending on the exemplary embodiment, the first inner edge E1 of the first light shielding member 111 and the second outer edge E4 of the second light shielding member 222 may be aligned. However, to allow for process margins, the first and second light shielding members 111 and 222 may partially overlap.

[0066] According to an exemplary embodiment, the boundary area BA is defined by the combination of the first light blocking member 111 and the second light blocking member 222, and thus, the light transmission area TA and the display area DA can be distinguished from each other. For example, the outer edge of the boundary area BA (i.e., adjacent to the display area DA) may correspond to the first outer edge E2 of the first light blocking member 111, and the inner edge of the boundary area BA (i.e., adjacent to the light transmission area TA) may correspond to the second inner edge E3 of the second light blocking member 222.

[0067] Furthermore, the second opening OP2 of the second light blocking member 222 may have a smaller planar width than the first opening OP1 of the first light blocking member 111 , and a smaller diameter than the first opening OP1 of the first light blocking member 111 .

[0068] The first light blocking member 111 and the second light blocking member 222 surround the light transmitting area TA.

[0069] According to an exemplary embodiment, the width WL of the optical member 10 may be smaller than the width WT of the light-transmitting area TA. When the width WT of the light-transmitting area TA is equal to or smaller than the width WL of the optical member 10, the optical member 10 may be shielded by the second light blocking member 222 due to misalignment that may occur during the manufacturing process.

[0070] In some embodiments, an air layer (not shown) may be disposed in the open space between the window 500 and the substrate 110. However, this is not restrictive, and depending on the exemplary embodiment, a filling material may be disposed in the open space. The filling material may be a silicon (Si)-based organic material.

[0071] According to an exemplary embodiment, a boundary area BA between the light transmission area TA in which the optical member 10 is arranged and the display area DA in which the plurality of pixels PX are arranged is blocked by the first light blocking member 111 and the second light blocking member 222. Therefore, the boundary area BA can be prevented from being seen by the user, and a display device with improved display quality can be provided.

[0072] In the following, reference will be made to Figure 3 、 Figure 4 and Figure 5 A cross-sectional structure of a display device according to an exemplary embodiment is described in more detail. Figure 3 yes Figure 2 a cross-sectional view of a portion of an exemplary embodiment, Figure 4 yes Figure 2 A cross-sectional view of a portion of an exemplary embodiment of the present invention is provided, and Figure 5 yes Figure 2 Description of constituent elements that overlap with the above-described constituent elements will be omitted.

[0073] First, refer to Figure 3 , the light transmission area TA may overlap with the window 500, the through hole H of the substrate 110, and the optical member 10. Such a light transmission area TA does not have an opaque layer (metal layer, semiconductor layer, etc.) compared to the display area DA described below, and the number of layers is reduced, thereby improving light transmittance by reducing light loss occurring at the edges of the layers.

[0074] The optical member 10 is disposed under the substrate 110 in the rear surface of the light transmission area TA, and the optical member 10 may be provided as a camera, a flash, a sensor, or the like.

[0075] A plurality of pixels are formed in the display area DA, and each pixel includes a pixel circuit and an emission layer that receives current from the pixel circuit and emits light. The emission layer is divided with reference to partition walls 210 .

[0076] The substrate 110 may include a plastic layer and a barrier layer, or may include a glass substrate. The plastic layer and the barrier layer may be alternately stacked.

[0077] The plastic layer may include any one selected from the group consisting of polyethersulfone (PES), polyacrylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyarylate, polyimide (PI), polycarbonate (PC), poly(arylethersulfone), and combinations thereof. The barrier layer may include at least one of silicon oxide, silicon nitride, and aluminum oxide, but this is not limiting. The barrier layer may include any inorganic material.

[0078] The buffer layer 120 is disposed on the substrate 110. The buffer layer 120 may include an inorganic insulating material such as silicon oxide, silicon nitride, aluminum oxide, or the like, or may include an organic insulating material such as polyimide acrylate, or the like. Depending on the exemplary embodiment, the buffer layer 120 may be omitted. The buffer layer 120 may planarize one surface of the substrate 110 or prevent moisture or impurities from flowing into the emission layer 370.

[0079] The semiconductor layer 130 is disposed on the buffer layer 120. The semiconductor layer 130 may include an amorphous semiconductor, a polycrystalline semiconductor, or an oxide semiconductor.

[0080] The semiconductor layer 130 may include a source region 132 connected to the source electrode 173 , a drain region 133 connected to the drain electrode 175 , and a channel region 131 disposed between the source region 132 and the drain region 133 .

[0081] The gate insulating layer 140 is disposed on the semiconductor layer 130 and the buffer layer 120 not covered by the semiconductor layer 130. The gate insulating layer 140 may also include an inorganic insulating material such as silicon nitride or silicon oxide, or may also include an organic insulating material. Here, silicon nitride includes, for example, SiN x or SiON, and silicon oxide includes, for example, SiO x .

[0082] The gate electrode 124 may be disposed on the gate insulating layer 140. The gate electrode 124 may overlap the channel region 131 of the semiconductor layer 130.

[0083] The interlayer insulating layer 160 is disposed on the exposed portion of the gate insulating layer 140 and the gate electrode 124 to cover them. The interlayer insulating layer 160 may include an inorganic insulating material or an organic insulating material.

[0084] Source and drain electrodes 173 and 175 may be disposed on interlayer insulating layer 160. Source and drain electrodes 173 and 175 are connected to source and drain regions 132 and 133 of semiconductor layer 130 through contact holes of interlayer insulating layer 160 and gate insulating layer 140, respectively.

[0085] The planarization insulating layer 180 may be disposed on the source electrode 173, the drain electrode 175, and portions of the interlayer insulating layer 160 exposed from the source electrode 173 and the drain electrode 175 to cover them. The planarization insulating layer 180 may include an inorganic insulating material or an organic insulating material.

[0086] A pixel electrode 191 as a first electrode is disposed on the planarization insulating layer 180. The pixel electrode 191 may be connected to the drain electrode 175 through a contact hole of the planarization insulating layer 180.

[0087] Partition wall 210 may be disposed on pixel electrode 191 and planarization insulating layer 180. Partition wall 210 may overlap at least a portion of pixel electrode 191. Partition wall 210 includes an opening 211 that overlaps pixel electrode 191. Emission layer 370 is disposed in opening 211. Common electrode 270 is disposed on emission layer 370 and partition wall 210. Pixel electrode 191, emission layer 370, and common electrode 270 form a light-emitting element.

[0088] Depending on the exemplary embodiment, the pixel electrode 191 may be an anode serving as a hole injection electrode, and the common electrode 270 may be a cathode serving as an electron injection electrode. Conversely, the pixel electrode may be a cathode and the common electrode may be an anode. Holes and electrons are injected from the pixel electrode 191 and the common electrode 270 into the emissive layer 370, and excitons formed by coupling the injected holes and electrons fall from an excited state to a ground state to emit light.

[0089] Depending on the exemplary embodiment, an auxiliary layer 370a may be arranged between the common electrode 270 and the emission layer 370. The auxiliary layer 370a may include at least one of an electron transport layer and an electron injection layer, and may be omitted depending on the exemplary embodiment. In addition, although not shown, at least one of a hole transport layer and a hole injection layer may be included between the pixel electrode 191 and the emission layer 370. The hole transport layer and the hole injection layer may have the same planar shape as the auxiliary layer 370a.

[0090] The encapsulation layer 400 protecting the light emitting element is disposed on the common electrode 270. As shown in the drawing, the encapsulation layer 400 may contact one surface of the substrate 110 while contacting the common electrode 270 and the first light blocking member 111.

[0091] The encapsulation layer 400 may be a thin film encapsulation layer in which an inorganic layer and an organic layer are stacked, and may include three layers formed of an inorganic layer, an organic layer, and an inorganic layer. However, the encapsulation layer 400 is not limited thereto and may be formed in the shape of a substrate. Depending on the exemplary embodiment, a capping layer and a functional layer may be arranged between the common electrode 270 and the encapsulation layer 400.

[0092] According to an exemplary embodiment, a first light blocking member 111 may be disposed on the partition wall 210. The first light blocking member 111 may be formed from the top surface of the partition wall 210 along the side surface of the partition wall 210 and may contact the substrate 110. For example, the first light blocking member 111 may contact the top surface of the partition wall 210, the side surface of the planarization insulating layer 180, and the side surface of the interlayer insulating layer 160. Therefore, the inner edge of the first light blocking member 111 may extend vertically from the adhesive layer 440 to the substrate 110, while the outer edge of the first light blocking member 111 may not extend downward to the substrate 110 but may contact the partition wall 210.

[0093] In some cases, the auxiliary layer 370a and the common electrode 270 may overlap a portion of the first light blocking member 111 and the partition wall 210 while being disposed on the emission layer 370. A portion of the auxiliary layer 370a and a portion of the common electrode 270 may be disposed on the top surface of the partition wall 210. A portion of the first light blocking member 111 may be disposed between the auxiliary layer 370a, the common electrode 270, and the partition wall 210.

[0094] Next, refer to Figure 4 According to an exemplary embodiment, a first light blocking member 111 may be disposed on the encapsulation layer 400. The first light blocking member 111 may extend to contact the substrate 110 while overlapping the top and side surfaces of the encapsulation layer 400.

[0095] The optically transparent adhesive layer 440 and the first light blocking member 111 may be disposed on the encapsulation layer 400. The second light blocking member 222 may be disposed over a portion of the adhesive layer 440, but may be located within the vertical extension of the adhesive layer 440. In some examples, a portion of the adhesive layer 440 may be disposed between the first light blocking member 111 and the second light blocking member 222.

[0096] Although the present disclosure has described the position of the first light blocking member 111 , the stacked structure may be changed within a range overlapping the boundary area BA.

[0097] Next, refer to Figure 5, the color filter 330 may be arranged on the encapsulation layer 400 together with the first light blocking member 111. The first light blocking member 111 includes a first opening OP1 overlapping the light transmission area TA. The color filter 330 may be arranged at a position overlapping the emission layer 370. In the present exemplary embodiment, the color filter 330 and the first light blocking member 111 are formed on the encapsulation layer 400, but this is not restrictive. Depending on the exemplary embodiment, the color filter 330 may be arranged Figure 3 On the encapsulation layer 400 shown in .

[0098] According to an exemplary embodiment, the emission layer 370 emits blue light, and the color filter 330 may include quantum dots that convert blue light into red light or quantum dots that convert blue light into green light, or may directly emit incident blue light. Alternatively, the emission layer 370 may emit red light, green light, and blue light.

[0099] As described above, the color filter 330 according to an exemplary embodiment may include quantum dots. The core of the quantum dots may be selected from II-VI compounds, III-V compounds, IV-VI compounds, IV elements, IV compounds, and combinations thereof.

[0100] The II-VI compound may be selected from the group consisting of, but not limited to, binary compounds and mixtures thereof, ternary compounds and mixtures thereof, and quaternary compounds and mixtures thereof. The binary compound is selected from the group consisting of CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, and MgS; the ternary compound is selected from the group consisting of AgInS, CuInS, CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, H gSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe, MgZnS ; The quaternary compound is selected from HgZnTeS, CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe.

[0101] The III-V compound can be selected from: a group of binary compounds and mixtures thereof, a group of ternary compounds and mixtures thereof, and a group of quaternary compounds and mixtures thereof, but is not limited thereto, the binary compound is selected from GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb; the ternary compound is selected from GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InNP, InNAs, InNSb, InPAs, InPSb, GaAlNP; the quaternary compound is selected from GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb.

[0102] The IV-VI compound may be selected from the group consisting of binary compounds and mixtures thereof, ternary compounds and mixtures thereof, and quaternary compounds and mixtures thereof. The binary compound may be selected from SnS, SnSe, SnTe, PbS, PbSe, and PbTe; the ternary compound may be selected from SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, and SnPbTe; and the quaternary compound may be selected from SnPbSSe, SnPbSeTe, and SnPbSTe. The Group IV element may be selected from the group consisting of Si, Ge, and mixtures thereof. The Group IV compound may be a binary compound selected from the group consisting of SiC, SiGe, and mixtures thereof, but is not limited thereto.

[0103] In this case, the binary, ternary, or quaternary compound may be present in the particle at a uniform concentration, or may be present in the same particle divided into a state where the concentration distribution is partially different. Furthermore, the quantum dot may have a core / shell structure in which one quantum dot surrounds another quantum dot. The interface between the core and the shell may have a concentration gradient such that the concentration of the element present in the shell gradually decreases as it approaches the center.

[0104] In some embodiments, quantum dots may have a core-shell structure comprising a core comprising the above-described nanocrystals and a shell surrounding the core. The shell of the quantum dot may serve as a protective layer for maintaining semiconductor properties by preventing chemical denaturation of the core and / or as a charging layer for imparting electrophoretic properties to the quantum dot. The shell may be a single layer or multiple layers. The interface between the core and the shell may have a concentration gradient in which the concentration of an element decreases toward its center. The shell of the quantum dot may comprise a metal or non-metal oxide, a semiconductor compound, or a combination thereof.

[0105] For example, the metal or non-metal oxide may illustratively include binary compounds or ternary compounds, but are not limited thereto, binary compounds such as SiO2, Al2O3, TiO2, ZnO, MnO, Mn2O3, Mn3O4, CuO, FeO, Fe2O3, Fe3O4, CoO, Co3O4, NiO, etc., and ternary compounds such as MgAl2O4, CoFe2O4, NiFe2O4, CoMn2O4, etc.

[0106] In addition, the semiconductor compound may illustratively include CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnTeS, GaAs, GaP, GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP, AlSb, etc., but is not limited thereto.

[0107] Quantum dots can have a full width at half maximum (FWHM) of the emission wavelength spectrum of less than about 45 nm; can improve color purity or color reproducibility in the range of about 40 nm to 30 nm. In addition, the light emitted by quantum dots is emitted in multiple directions, so that a wide viewing angle can be improved.

[0108] Furthermore, the shape of the quantum dots is not limited to the shapes generally used in the related art; and nanoparticles, nanotubes, nanowires, nanofibers, and planar nanoparticles having spherical, conical, multi-arm, or cubic shapes are used.

[0109] Quantum dots have the ability to control the color of emitted light according to particle size, and thus quantum dots can have various luminescent hues such as blue, red, and green.

[0110] An adhesive layer 440 may be disposed between the color filter 330 and the window 500 and between the first light blocking member 111 and the window 500. Descriptions of constituent elements that are the same as those described above may be omitted.

[0111] In the following, reference will be made to Figure 6 A display device according to an exemplary embodiment is described. Figure 6 It is along Figure 1 Description of components identical to those described above will be omitted.

[0112] First, refer to Figure 6, the light-transmitting area TA has a non-porous structure. In the case of a through-hole structure, a through-hole is formed in the substrate 110 included in the display device 1, but in the case of a non-porous structure, the substrate 110 does not include a through-hole. Therefore, the light-transmitting area TA may overlap with the substrate 110 and the optical member 10.

[0113] Because the light-transmitting area TA is larger than a single pixel in size, it is different from the light-transmitting area formed in the pixel for realizing transparent display. For example, the area where the pixel circuit is formed in the pixel may have a rectangular shape of 25 μm (horizontally) and 50 μm (vertically), but the light-transmitting area TA may have a circular structure with a diameter of 3 mm.

[0114] Next, refer to Figures 7 to 9 A cross-sectional view of a display apparatus according to an exemplary embodiment is described. Figure 7 yes Figure 6 a cross-sectional view of a portion of an exemplary embodiment, Figure 8 yes Figure 6 A cross-sectional view of a portion of an exemplary embodiment of the present invention is provided, and Figure 9 yes Figure 6 A cross-sectional view of a portion of an exemplary embodiment of the present invention.

[0115] First, refer to Figure 7 The light transmission area TA may overlap the substrate 110, the auxiliary layer 370a forming the light emitting element, the common electrode 270, the air layer, and the window 500. Depending on the exemplary embodiment, the common electrode 270 may be omitted, and at least one of the buffer layer 120 and the gate insulating layer 140 may be disposed.

[0116] The first light blocking member 111 may be disposed on the partition wall 210 and may contact a side surface of at least one of the planarization insulating layer 180, the interlayer insulating layer 160, the gate insulating layer 140, and the buffer layer 120 while overlapping the top surface of the partition wall 210. The first light blocking member 111 may also extend to one surface of the substrate 110.

[0117] In addition, the auxiliary layer 370a and the common electrode 270 may overlap the display area DA, the boundary area BA, and the light transmission area TA. The auxiliary layer 370a and the common electrode 270 may extend from the display area DA to the boundary area BA and may overlap the side surface and top surface of the first light blocking member 111 arranged in the boundary area BA.

[0118] Next, refer to Figure 8The light transmission area TA may overlap the substrate 110, the auxiliary layer 370a forming the light emitting element, the common electrode 270, the air layer, and the window 500. Depending on the exemplary embodiment, the common electrode 270 may be omitted, and at least one of the buffer layer 120 and the gate insulating layer 140 may be disposed.

[0119] The first light blocking member 111 may be disposed on the encapsulation layer 400 and may extend toward the substrate 110 while overlapping the top and side surfaces of the encapsulation layer 400. In addition, the first light blocking member 111 may be disposed between the encapsulation layer 400 and the adhesive layer 440.

[0120] Next, refer to Figure 9 The light transmission area TA may overlap the substrate 110, the auxiliary layer 370a forming the light emitting element, the common electrode 270, the air layer, and the window 500. Depending on the exemplary embodiment, the common electrode 270 may be omitted, and at least one of the buffer layer 120 and the gate insulating layer 140 may be disposed.

[0121] The color filter 330 and the first light blocking member 111 may be arranged on the encapsulation layer 400. The first light blocking member 111 includes a first opening OP1 overlapping the light transmission area TA. The color filter 330 may be arranged at a position overlapping the emission layer 370. In the present exemplary embodiment, the color filter 330 and the first light blocking member 111 are formed on the encapsulation layer 400, but this is not restrictive. Depending on the exemplary embodiment, the color filter 330 may be arranged at Figure 7 On the encapsulation layer 400 shown in .

[0122] According to an exemplary embodiment, the emission layer 370 emits blue light, and the color filter 330 may include quantum dots that convert blue light into red light or quantum dots that convert blue light into green light, or may directly emit incident blue light. Alternatively, the emission layer 370 may emit red light, green light, and blue light.

[0123] The color filter 330 according to an exemplary embodiment may include quantum dots, and the core of the quantum dots may be selected from group II-VI compounds, group III-V compounds, group IV-VI compounds, group IV elements, group IV compounds, and combinations thereof.

[0124] An adhesive layer 440 may be disposed between the color filter 330 and the window 500 and between the first light blocking member 111 and the window 500. Descriptions of constituent elements that are the same as those described above are omitted.

[0125] While the present disclosure has been described in conjunction with what are presently considered to be practical exemplary embodiments, it is to be understood that the present disclosure is not limited to the disclosed embodiments, but is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

[0126] <Description of symbols>

[0127] TA: Light Transmission Area

[0128] DA: Display Area

[0129] BA: Boundary Area

[0130] OP1: First opening

[0131] OP2: Second opening

[0132] 111: First light shielding member

[0133] 222: Second light shielding member

[0134] 500: Window

Claims

1. A display device, comprising: a substrate overlapping a light-transmitting area, a display area surrounding the light-transmitting area, and a boundary area disposed between the light-transmitting area and the display area; a pixel electrode disposed on the insulating layer; an emission layer, arranged on the pixel electrode; a common electrode, arranged on the emission layer; an encapsulation layer, disposed on the common electrode; a first light shielding member disposed on the substrate and overlapping the boundary area; a window, the window overlapping the substrate; as well as a second light shielding member disposed between the first light shielding member and the window and overlapping the boundary area, wherein the first light shielding member includes a first opening overlapping the light transmitting area, The second light shielding member includes a second opening overlapping the light transmitting area, and The diameter of the first opening is greater than the diameter of the second opening, wherein the first light shielding member contacts the encapsulation layer, and The first light shielding member overlaps with a top surface and a side surface of the encapsulation layer.

2. The display device according to claim 1, wherein The first light shielding member includes a first outer edge and a first inner edge forming the first opening, and the first inner edge overlaps with the second light shielding member.

3. The display device according to claim 1, wherein The second light shielding member includes a second outer edge and a second inner edge forming the second opening, and the second outer edge overlaps the first light shielding member.

4. The display device according to claim 2, wherein The first outer edge is aligned with an edge of the border area.

5. The display device according to claim 3, wherein The second inner edge is aligned with an edge of the border area. The display apparatus according to claim 1 , further comprising an optical member overlapping the light-transmitting area.

7. The display device according to claim 6, wherein The width of the optical member is smaller than the width of the light-transmitting region.

8. The display device according to claim 6, wherein A diameter of the optical member is smaller than a diameter of the second opening.

9. The display device according to claim 6, wherein The substrate includes a through hole overlapping the optical member.

10. The display device according to claim 6, wherein The optical member overlaps with the substrate.

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