Display device and electronic device including the same

Abstract

The utility model provides a display device and an electronic device including the same. The display device includes: a base layer; and a first light-emitting element and a second light-emitting element on the base layer and each emitting source light. The display device further includes: a first partition wall through which a first opening is defined to correspond to the first light emitting element; a first light control pattern disposed in the first opening; a reflective layer disposed at least on an inside surface of the first partition wall defining the first opening; and a color layer disposed on the reflective layer so as to overlap at least an inner surface of the first partition wall and absorb light incident to the color layer from the outside. In the display device, a color layer on a reflective layer may absorb external light, thereby reducing its reflectivity. The reflective layers and / or partition walls may also help prevent or reduce color mixing between adjacent pixel regions, resulting in a more accurate grayscale expression.

Description

[0001] This application claims priority to and the benefit of Korean Patent Application No. 10-2024-0058372, filed on May 2, 2024, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference. TECHNICAL FIELD

[0002] One or more aspects of embodiments of the present disclosure relate to a display device. More particularly, the present disclosure relates to a display device including a light control pattern. BACKGROUND

[0003] Display devices can be classified into two main types (categories): transmissive display devices that selectively transmit light from an external source, and emissive display devices that generate their own light. These display devices incorporate various functional patterns within their pixels to produce images. These functional patterns transmit source light of a specific wavelength range or change the color of the source light. SUMMARY

[0004] It is an object of the present utility model to provide a display device having improved (enhanced) luminous efficiency. However, aspects of the present disclosure are not limited to the aspects set forth herein.

[0005] The foregoing and other aspects of the present disclosure will become more apparent from the following detailed description of the disclosure when considered in conjunction with the accompanying drawings.

[0006] One or more embodiments of the present disclosure provide a display device including a first base layer, and first and second light emitting elements disposed on the first base layer and each emitting source light (e.g., the first and second light emitting elements are disposed on the first base layer and each configured to emit source light). The display device further includes a first partition wall through which a first opening is defined to correspond to the first light emitting element, a first light control pattern disposed in the first opening, a reflection layer disposed on at least an inner side surface of the first partition wall defining the first opening, and a color layer disposed on the reflection layer and at least superposed with the inner side surface of the first partition wall and absorbing light incident from the outside to the color layer.

[0007] The reflection layer can further be disposed on an upper surface of the first partition wall.

[0008] The color layer can be disposed on the reflection layer to further be superposed with the upper surface of the first partition wall.

[0009] The reflection layer can include a first portion disposed on the inner side surface of the first partition wall, and a second portion superposed with the upper surface of the first partition wall, and the color layer can be superposed with the first and second portions in its entirety.

[0010] The display device may further include a second partition wall and a second light control pattern that may extend through the second partition wall to define a second opening (e.g., the second partition wall includes a second opening) to correspond to a second light-emitting element, the second light control pattern being disposed in the second opening. A reflective layer may also be disposed on the inner surface of the second partition wall defining the second opening, and a color layer may be disposed on the reflective layer to further overlap with the inner surface of the second partition wall.

[0011] The reflective layer can also be arranged on the outer surface of the first partition wall.

[0012] The color layer can be arranged on the reflective layer to further overlap with the outer surface of the first partition wall.

[0013] The source light can be blue light.

[0014] The first light control pattern may include quantum dots to convert blue light into red or yellow light.

[0015] Color layers can have the same color as the source light (for example, the color of a color layer can be the same as the color of the source light).

[0016] The first partition wall may include light-blocking material.

[0017] The reflective layer may include at least one metal selected from the group consisting of aluminum, silver, gold, platinum, copper and palladium.

[0018] The display device may further include a thin-film encapsulation layer disposed on the first substrate layer and configured to encapsulate the first light-emitting element and the second light-emitting element, and a first partition wall may be disposed on the thin-film encapsulation layer.

[0019] The display device may further include a first color filter arranged on a first light control pattern, and the first color filter may have a color different from the color of the color layer.

[0020] The display device may further include a first color filter disposed on a first light control pattern and an encapsulation panel opposite (e.g., facing the first substrate layer) to the first substrate layer, and the first color filter may be disposed on the lower surface of the encapsulation panel.

[0021] One or more embodiments of the disclosure provide a display apparatus including a base layer; and first and second light emitting elements disposed on the base layer and each emitting source light (e.g., configured to each emit source light). The display apparatus further includes a partition wall through which an opening is defined to correspond to the first light emitting element; a light control pattern disposed in the opening; and a reflective layer configured (e.g., disposed) to correspond to an outer side surface of the partition wall and an upper surface of the partition wall. The partition wall can have a color that is substantially the same as a color of the source light.

[0022] The partition wall can be configured to transmit the source light and absorb light incident to the partition wall from an outside of the display apparatus.

[0023] The display apparatus can further include a color filter disposed on the light control pattern.

[0024] According to one or more embodiments, an electronic apparatus can include the display apparatus of the disclosure.

[0025] The electronic apparatus can be a smart phone, a television, a monitor, a tablet, an electric vehicle, a mobile phone, a tablet personal computer (PC), a mobile communication terminal, an electronic notebook, an electronic book, a portable multimedia player (PMP), a navigation apparatus, an ultra-mobile PC (UMPC), a laptop computer, a billboard, an Internet of Things (IoT) apparatus, a smart watch, a watch phone, or a head-mounted display (HMD).

[0026] According to the disclosure, the source light can be reflected by the reflective layer disposed to correspond to an inner side surface of the partition wall, and can be provided back to the light control pattern. The effect of recycling of the source light can be improved, whereby the light emitting efficiency of the display apparatus can be enhanced.

[0027] According to the disclosure, a color layer disposed on the reflective layer can absorb light incident from the outside, and thus the reflectance of the external light can be reduced thereby.

[0028] According to the disclosure, the reflective layer and / or the partition wall can prevent or reduce color mixing between pixel regions adjacent to each other. As a result, accurate gray scale expression can be achieved by the display apparatus of the disclosure.

[0029] For example, the disclosure describes how a reflective layer positioned along an inner side surface of a partition wall can enhance light recycling and improve the light emitting efficiency of a display apparatus. In addition, a color layer on the reflective layer can absorb external light, thereby reducing its reflectance. The reflective layer and / or the partition wall can also help prevent or reduce color mixing between adjacent pixel regions, resulting in more accurate gray scale expression. BRIEF DESCRIPTION OF DRAWINGS

[0030] The accompanying drawings, which are included to provide a further understanding of the foregoing and the

[0031] FIG. 1A is a perspective view of a display device according to one or more embodiments of the present disclosure;

[0032] FIG. 1B is a cross-sectional view of a display device according to one or more embodiments of the present disclosure;

[0033] FIG. 2 is a plan view of a display panel according to one or more embodiments of the present disclosure;

[0034] FIG. 3 is an equivalent circuit diagram of a pixel according to one or more embodiments of the present disclosure;

[0035] FIG. 4A and FIG. 4B is an enlarged plan view of a display area according to one or more embodiments of the present disclosure;

[0036] FIG. 5A is a cross-sectional view of a display device taken along line I-I' of FIG. 4A

[0037] FIG. 5B and FIG. 5C are schematic cross-sectional views illustrating effects of improving luminance and reducing reflectance according to one or more embodiments of the present disclosure;

[0038] FIG. 6A and FIG. 6B are plan views illustrating shapes of a partition wall according to one or more embodiments of the present disclosure;

[0039] FIG. 6C is a plan view illustrating a shape of a color layer according to one or more embodiments of the present disclosure;

[0040] FIG. 7 is a cross-sectional view of a display device taken along line I-I' of FIG. 4A

[0041] FIG. 8 and FIG. 9 are cross-sectional views of a display device according to one or more embodiments of the present disclosure. DETAILED DESCRIPTION

[0042] ​​The present disclosure will now be described, and it can be embodied in many different forms, and should not be construed as limited to one or more embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0043] In the present disclosure, it will be understood that when an element (or components, region, layer or section) is referred to as being "on" another element or layer, "connected to" or "coupled to" another element or layer, it can be directly on, directly connected to, or directly coupled to the other element or layer, or intervening elements or layers can be present.

[0044] The same reference numerals are used throughout the drawings and corresponding descriptions to represent the same elements. Repetitive descriptions can not be provided for each identical component. In the drawings, the thickness, proportions, and dimensions of components can be exaggerated for effective description. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0045] When expressions such as "at least one of," "one of," "selected from the group of," and "selected from among" precede a list of elements, the phrase modifies the entire list of elements and does not modify the individual elements of the list. For example, the expression "at least one of a, b, and c" indicates only a, only b, only c, both a and b (e.g., at the same time), both a and c (e.g., at the same time), both b and c (e.g., at the same time), all of a, b, and c, or variations thereof throughout the disclosure.

[0046] It will be understood that, although the terms first and / or second, etc. can be used herein to describe one or more elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. Thus, a first element could be termed a second element without departing from the teachings of the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0047] For ease of description, spatially relative terms such as "under", "below", "lower", "over", and / or "upper" can be used herein for the purpose of describing the orientation of one element or feature relative to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device is inverted, elements described as "below" or "under" other elements or features would then be oriented "above" the other elements or features. Thus, the term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0048] It will also be understood that, when using the terms "comprise", "have", "include" and / or variations thereof, in this specification, it is meant that the stated features, integers, steps, operations, elements, and / or components are present, but not excluding the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0049] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0050] The term "may" will be understood to mean "one or more embodiments of the present disclosure" wherein some embodiments include the described element, and some embodiments do not include the described element and / or include an alternative element. Similarly, the alternative language such as "or" means "one or more embodiments of the present disclosure", each of which includes the corresponding listed item.

[0051] In this context, "consisting essentially of means that any additional components make no substantial contribution to the chemical, physical, optical, or electrical properties of the semiconductor film.

[0052] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings, in which one or more embodiments of the present disclosure are illustrated. The disclosed aspects and features, as well as methods of realizing the same, will be apparent from one or more embodiments described with reference to the accompanying drawings. In this specification, phrases such as "on a plane" and / or "plan view" indicate that a target portion is viewed from the top, and the phrase "on a sectional plane" indicates that a sectional plane formed by vertically cutting a target portion is viewed from the side.

[0053] Display device

[0054] FIG. 1A is a perspective view of a display device DD according to one or more embodiments of the present disclosure. FIG. 1B is a cross-sectional view of a display device DD according to one or more embodiments of the present disclosure.

[0055] Referring to FIG. 1A , the display device DD can display an image through a display surface DD-IS. The display surface DD-IS can be substantially parallel to a plane defined by the first direction DR1 and the second direction DR2. An upper surface of a member arranged at an uppermost position of the display device DD can be defined as the display surface DD-IS.

[0056] The third direction DR3 can indicate a normal direction of the display surface DD-IS, i.e., a thickness direction of the display device DD. A front (or upper) surface and a rear (or lower) surface of each layer or each unit can be distinguished from each other in the third direction DR3. In the present context and unless otherwise defined, "plan view" or "in plan view" refers to a view of the display surface DD-IS seen from the upper direction to the lower direction, in which the plane of the view is parallel to the first direction DR1 and the second direction DR2, and perpendicular to or orthogonal to the third direction DR3.

[0057] The display device DD can include a display area DA and a non-display area NDA. Unit pixels PXU can be arranged in the display area DA, and unit pixels PXU can not be arranged in the non-display area NDA. The non-display area NDA can be defined along an edge of the display surface DD-IS. The non-display area NDA can be around (e.g., surrounding) the display area DA. According to one or more embodiments, the non-display area NDA can not be provided, or can be defined to be adjacent to only one side of the display area DA. FIG. 1A A flat display device DD is shown as a representative example, however, the display device DD can have a curved shape, can be rolled, or can slide from a housing.

[0058] FIG. 1A The unit pixel PXU shown in FIG. 1A can define a pixel row and a pixel column. The unit pixel PXU can be a smallest repeating unit, and can include at least one pixel. The unit pixel PXU can include a plurality of pixels that provide light having different colors from each other.

[0059] Referring to FIG. 1BThe display device DD can include a display panel 100 (or a lower display substrate) and an encapsulation panel 200 (or an upper display substrate) opposite to (e.g., facing) and spaced and / or separated from the display panel 100. A set or predetermined cell gap can be defined between the display panel 100 and the encapsulation panel 200. The cell gap can be maintained by a sealing member SLM that bonds the display panel 100 and the encapsulation panel 200. The sealing member SLM can include an adhesive resin and an inorganic filler mixed with the adhesive resin. The sealing member SLM can also include other additives. The additives can include an amine-based curing agent and / or a photoinitiator. The additives can also include a silane-based additive and / or an acrylic-based additive. The sealing member SLM can include an inorganic-based material such as a frit.

[0060] Referring to FIG. 1B Each of the display panel 100 and the encapsulation panel 200 can include a display area DA and a non-display area NDA defined therein that are the same as a display area DA and a non-display area NDA of the display device DD. Hereinafter, the display area DA of the display device DD can indicate the display area DA of each of the display panel 100 and the encapsulation panel 200, and the non-display area NDA of the display device DD can indicate the non-display area NDA of each of the display panel 100 and the encapsulation panel 200.

[0061] FIG. 2 is a plan view of the display panel 100 according to one or more embodiments of the disclosure, and FIG. 3 is an equivalent circuit diagram of a pixel PXij according to one or more embodiments of the disclosure.

[0062] FIG. 2 The arrangement relationship of the signal lines GL1 to GLn and DL1 to DLm and the pixels PX11 to PXnm is shown in the plan view. The signal lines GL1 to GLn and DL1 to DLm can include a plurality of scan lines GL1 to GLn and a plurality of data lines DL1 to DLm, where n and m are positive integers of 2 or more. The plurality of scan lines GL1 to GLn are connected to a driving unit GDC disposed in the non-display area NDA.

[0063] Each of the pixels PX11 to PXnm can be connected to a corresponding scan line among the scan lines GL1 to GLn and a corresponding data line among the data lines DL1 to DLm. Each of the pixels PX11 to PXnm can include a pixel circuit and a light emitting element. Depending on the configuration of the pixel circuit of each of the pixels PX11 to PXnm, more types (kinds) of signal lines can be provided in the display panel 100.

[0064] FIG. 3A pixel PXij connected to an i-th scan line SCLi, an i-th sense line SSLi, a j-th data line DLj, and a j-th reference line RLj is shown as a representative example. The pixel PXij can include a pixel circuit PC and a light emitting element OLED electrically connected to the pixel circuit PC. The pixel circuit PC can include a plurality of transistors T1 to T3 and a capacitor Cst. The transistors T1 to T3 can be formed by a low temperature polysilicon (LTPS) process or a low temperature polyoxide (LTPO) process. Hereinafter, the transistors T1 to T3 will be described as N-type transistors, however, they should not be limited to or by this. According to one or more embodiments, at least one of the transistors T1 to T3 can be a P-type transistor.

[0065] In the present embodiment, a pixel circuit PC including a first transistor T1 (a driving transistor), a second transistor T2 (a switching transistor), a third transistor T3 (a sensing transistor), and a capacitor Cst is shown as a representative example. However, the pixel circuit PC should not be limited to or by this. According to one or more embodiments, the pixel circuit PC can further include additional transistors or can further include additional capacitors.

[0066] The light emitting element OLED can be an organic light emitting element and / or an inorganic light emitting element including an anode (a first electrode) and a cathode (a second electrode). The anode of the light emitting element OLED can receive a first voltage ELVDD via the first transistor T1, and the cathode of the light emitting element OLED can receive a second voltage ELVSS. The light emitting element OLED can emit light in response to the first voltage ELVDD and the second voltage ELVSS.

[0067] The first transistor T1 can include a drain D1 receiving the first voltage ELVDD, a source S1 connected to the anode of the light emitting element OLED, and a gate G1 connected to the capacitor Cst. The first transistor T1 can control a driving current flowing from the first voltage ELVDD to the light emitting element OLED in response to a level of a voltage charged in the capacitor Cst.

[0068] The second transistor T2 can include a drain D2 connected to the j-th data line DLj, a source S2 connected to the capacitor Cst, and a gate G2 receiving the i-th first scan signal SCi. The j-th data line DLj can receive a data voltage Vd. The second transistor T2 can apply the data voltage Vd to the first transistor T1 in response to the i-th first scan signal SCi.

[0069] The third transistor T3 can include a source S3 connected to the j-th reference line RLj, a drain D3 connected to an anode of the light emitting element OLED, and a gate G3 receiving the i-th second scan signal SSi. The j-th reference line RLj can receive a reference voltage Vr. The third transistor T3 can initialize the capacitor Cst and the anode of the light emitting element OLED.

[0070] The capacitor Cst can be charged with a charge corresponding to a difference between the voltage from the second transistor T2 and the first voltage ELVDD. The capacitor Cst can be connected to the gate G1 of the first transistor T1 and the anode of the light emitting element OLED.

[0071] FIG. 4A And FIG. 4B is a magnified plan view of the display area DA according to one or more embodiments of the present disclosure.

[0072] Referring to FIG. 4A And FIG. 4B , the unit pixels PXU can be arranged in the first direction DR1 and the second direction DR2. In the present embodiment, the unit pixels PXU can include first, second, and third pixels that emit light having different colors from each other. The first, second, and third pixels can respectively emit red, green, and blue light. FIG. 4A And FIG. 4B The first, second, and third pixel areas PXA-R, PXA-G, and PXA-B are respectively illustrated as representative examples of the first, second, and third pixels. A peripheral area NPXA can be defined between the first, second, and third pixel areas PXA-R, PXA-G, and PXA-B. The peripheral area NPXA can define a boundary of the first, second, and third pixel areas PXA-R, PXA-G, and PXA-B, and can prevent or reduce color mixing between the first, second, and third pixel areas PXA-R, PXA-G, and PXA-B.

[0073] Referring to FIG. 4A , the first and third pixel areas PXA-R and PXA-B can be arranged in substantially the same row, and the second pixel area PXA-G can be arranged in a different row from the row in which the first and third pixel areas PXA-R and PXA-B are arranged. The second pixel area PXA-G can have the largest size, and the third pixel area PXA-B can have the smallest size, however, the present disclosure should not be limited thereto or thereby. In the present embodiment, each of the first, second, and third pixel areas PXA-R, PXA-G, and PXA-B has a substantially quadrilateral shape, however, it should not be specifically limited.

[0074] Referring to FIG. 4B , the first pixel area PXA-R, the second pixel area PXA-G, and the third pixel area PXA-B can be arranged in substantially the same row. The first pixel area PXA-R, the second pixel area PXA-G, and the third pixel area PXA-B can have substantially the same width in the second direction DR2.

[0075] FIG. 5A is a cross-sectional view of the display device DD taken along a line I-I' of FIG. 4A , and FIG. 5B and FIG. 5C are schematic cross-sectional views showing effects of improving luminance and reducing reflectance according to one or more embodiments of the disclosure.

[0076] FIG. 5A shows detailed cross-sectional views of the display panel 100 and the encapsulation panel 200 centered on the first pixel area PXA-R. Referring to FIG. 5A , the filler material FM can be arranged between the display panel 100 and the encapsulation panel 200, however, the disclosure should not be limited thereto or thereby. According to one or more embodiments, the filler material FM can not be provided, and a gap can be defined between the display panel 100 and the encapsulation panel 200. The filler material FM can be an organic material, but it should not be specifically limited.

[0077] The light blocking pattern BML can be arranged on the first base layer BS1. The light blocking pattern BML can include a metallic material. The signal line can be arranged on the same layer as the light blocking pattern BML. The first insulating layer 10 can be arranged on the first base layer BS1 to cover the light blocking pattern BML.

[0078] The semiconductor pattern can be arranged on the first insulating layer 10 to be superposed with the light blocking pattern BML. The semiconductor pattern can have different electrical properties according to whether it is doped or not. The semiconductor pattern can include a first region having a relatively high conductivity and a second region having a relatively low conductivity. The first region can be doped with an N-type dopant or a P-type dopant. The P-type transistor can include a doped region doped with a P-type dopant, and the N-type transistor can include a doped region doped with an N-type dopant. The second region can be a non-doped region or a region doped at a lower concentration than that of the first region.

[0079] The semiconductor pattern can include a source S1, a channel region A1 (or an active region), a drain D1, and a gate G1. The second insulating layer 20 can be arranged on the first insulating layer 10. A contact hole CNT1 can be defined through the second insulating layer 20 to expose the source S1 and the drain D1. Each of the first insulating layer 10 and the second insulating layer 20 can be an inorganic layer.

[0080] The connection electrodes CNE1 and CNE2 and the gate G1 can be arranged on the second insulating layer 20. The first connection electrode CNE1 can electrically connect the source S1 of the first transistor T1 to the drain D3 of the third transistor T3 shown in FIG. 3 FIG. 3 The second connection electrode CNE2 can electrically connect the drain D1 of the first transistor T1 to the signal line that receives the first voltage ELVDD shown in FIG. 5A

[0081] The third insulating layer 30 can be arranged on the second insulating layer 20. The third connection electrode CNE3 can be arranged on the third insulating layer 30. The third connection electrode CNE3 can be connected to the first connection electrode CNE1 via a contact hole CNT2 defined through the third insulating layer 30. The fourth insulating layer 40 can be arranged on the third insulating layer 30. The anode AE can be arranged on the fourth insulating layer 40. The anode AE can be connected to the third connection electrode CNE3 via a contact hole CNT3 defined through the fourth insulating layer 40. The third insulating layer 30 and the fourth insulating layer 40 can be organic layers.

[0082] The light emitting element OLED and the pixel definition layer PDL can be arranged on the fourth insulating layer 40. The pixel definition layer PDL can be provided with an opening PDL-OP defined therethrough to expose at least a portion of the anode AE. The opening PDL-OP of the pixel definition layer PDL can define the first light emitting area LA-R. An area in which the pixel definition layer PDL is arranged can be defined as the non-light emitting area NLA.

[0083] Referring to FIG. 4A , the light emitting areas can be defined to respectively correspond to the first pixel area PXA-R, the second pixel area PXA-G, and the third pixel area PXA-B. In the present embodiment, the light emitting area corresponding to the first pixel area PXA-R can be defined as the first light emitting area LA-R.

[0084] The light emitting layer EML can be commonly arranged throughout the first light emitting area LA-R and the non-light emitting area NLA. The light emitting layer EML can emit source light. The light emitting layer EML can include an organic light emitting material or an inorganic light emitting material. In the present embodiment, the source light can be blue light. In the present embodiment, the blue light can be referred to as first color light. A common layer such as the light emitting layer EML can be arranged to overlap with the unit pixel PXU of the display area DA shown in FIG. 4A

[0085] ​​​In one or more embodiments, a hole control layer can be disposed under the light emitting layer EML. An electron control layer can be disposed between the light emitting layer EML and the cathode CE. The electron control layer can include an electron transport layer and / or an electron injection layer. Each of the cathode CE, the hole control layer, and the electron control layer can correspond to a common layer.

[0086] The thin film encapsulation layer TFE can be disposed on the cathode CE. The thin film encapsulation layer TFE can be commonly disposed throughout the pixel PXij as shown in FIG. 1B. In the present embodiment, the thin film encapsulation layer TFE can directly cover the cathode CE. FIG. 3

[0087] The thin film encapsulation layer TFE can include at least one inorganic layer and / or an organic layer. In the present embodiment, the thin film encapsulation layer TFE can include two inorganic layers and an organic layer disposed between the two inorganic layers. According to one or more embodiments, the thin film encapsulation layer TFE can include a plurality of inorganic layers and / or a plurality of organic layers stacked in alternation with the plurality of inorganic layers.

[0088] The separation wall BW (or referred to as a separation pattern) can be disposed on the thin film encapsulation layer TFE. In the present embodiment, the separation wall BW can include a base resin and / or an additive. The base resin can include one or more suitable resin components. The additive can include a coupling agent and / or a photoinitiator. The additive can further include a dispersant. The separation wall BW can include a material having a transmittance equal to or less than a set value or a predetermined value. As an example, the separation wall BW can include a light-shielding material, for example, a black colorant. The separation wall BW can include a base resin and a black dye or pigment mixed with the base resin. As an example, the separation wall BW can include at least one selected from propylene glycol methyl ether acetate, 3-methoxy n-butyl acetate, an acrylate monomer, an acrylic monomer, an organic pigment, and an acrylate (for example, at least one of propylene glycol methyl ether acetate, 3-methoxy n-butyl acetate, an acrylate monomer, an acrylic monomer, an organic pigment, and an acrylate).

[0089] The separation wall BW can be disposed in the non-light emitting area NLA. In one or more embodiments, the separation wall BW can be disposed to respectively correspond to the first pixel area PXA-R, the second pixel area PXA-G, and the third pixel area PXA-B as shown in FIG. 1B. Each of the separation wall BW can define an opening. In the present embodiment, the separation wall BW corresponding to the first pixel area PXA-R can be referred to as a first separation wall BW1 as shown in FIG. 1B. Hereinafter, the first separation wall BW1 as shown in FIG. 1B can be referred to as the same as the separation wall BW as shown in FIG. 1B. The first opening BW-OPR can be defined as passing through the first separation wall BW1. FIG. 4A FIG. 6A FIG. 6A FIG. 5A to FIG. 5C The first opening BW-OPR can be defined as passing through the first separation wall BW1.​​​​

[0090] The boundary between the side surface IS and the outer side surface OS of the first separation wall BW1 can not be clear. The area of the surface of the first separation wall BW1 that does not contact the thin film encapsulation layer TFE and that is parallel to the first base layer BS1 can be referred to as the upper surface US, the area that is inclined with respect to the first base layer BS1 and that faces the first light control pattern CCF-R when viewed in a cross-sectional view can be referred to as the inner side surface IS (e.g., the area that is inclined with respect to the first base layer BS1 and that faces the first light control pattern CCF-R when viewed in a cross-sectional view can be referred to as the inner side surface IS), and the area that is inclined with respect to the first base layer BS1 and that does not face the first light control pattern CCF-R when viewed in a cross-sectional view can be referred to as the outer side surface OS (e.g., the area that is inclined with respect to the first base layer BS1 and that does not face the first light control pattern CCF-R when viewed in a cross-sectional view can be referred to as the outer side surface OS).

[0091] The reflective layer ML can be disposed at least on the inner side surface IS of the first separation wall BW1. In some embodiments, the reflective layer ML can also be disposed on the upper surface US of the first separation wall BW1. In the present embodiment, the reflective layer ML can also be disposed on the outer side surface OS of the first separation wall BW1, however, the present disclosure should not be limited thereto or thereby. The reflective layer ML can overlap the non-light emitting area NLA and can not overlap the first light emitting area LA-R.

[0092] The reflective layer ML can include a metallic material having a relatively high reflectivity. As an example, the reflective layer ML can include at least one selected from a group of metals consisting of aluminum, silver, gold, platinum, copper, and palladium. For example, the reflective layer ML can include aluminum.

[0093] The color layer ACL can be disposed on the reflective layer ML to overlap at least the inner side surface IS of the first separation wall BW1. The color layer ACL can also overlap at least the upper surface US of the first separation wall BW1. The color layer ACL can also overlap at least the outer side surface OS of the first separation wall BW1. The color layer ACL can completely cover the reflective layer ML.

[0094] The color layer ACL can include a base resin and / or an additive. The color layer ACL can include one or more suitable resin components. The color layer ACL can include a dye and / or a pigment. The color layer ACL can have a set or predetermined color due to the dye and / or the pigment. As an example, the color layer ACL can have a blue or green color and can have the same color as the source light.

[0095] The first light control pattern CCF-R can be disposed in the first opening BW-OPR of the first separation wall BW1. The first light control pattern CCF-R can be in contact with the color layer ACL. The first light control pattern CCF-R can change an optical property of the source light. In the present embodiment, the first light control pattern CCF-R can absorb the source light emitted from the light emitting element OLED, and then can generate light having a different color. In the present embodiment, the light generated by the first light control pattern CCF-R can be referred to as second color light, and the second color light can be red light or yellow light.

[0096] The first light control pattern CCF-R can include a base resin, quantum dots mixed (or dispersed) with the base resin, and scattering particles mixed (or dispersed) with the base resin. According to one or more embodiments, the scattering particles can not be provided.

[0097] The base resin can be a medium in which the quantum dots are dispersed and can include one or more suitable resin components commonly referred to as binders, however, it should not be limited thereto or thereby. In the present disclosure, any medium in which the quantum dots are dispersed can be referred to as a base resin regardless of its name, additional functions, and / or materials, etc. The base resin can be a polymer resin. For example, the base resin can be an acrylic resin, a urethane resin, a silicone resin, and / or an epoxy resin. The base resin can be a transparent resin.

[0098] The quantum dots can be particles that change the wavelength of light incident to the quantum dots. The quantum dots are materials having a crystal structure of several nanometers in size, containing several hundred to several thousand atoms, and exhibiting a quantum confinement effect in which an energy band gap increases due to the small size. When light having a wavelength with energy higher than the energy band gap is incident to the quantum dots, the quantum dots absorb the light and are excited, and then the quantum dots emit light of a specific wavelength and fall to the ground state. The emitted light of the specific wavelength has an energy value corresponding to the energy band gap. Due to the quantum confinement effect, the light emission properties of the quantum dots can be controlled or selected by adjusting the size and composition of the quantum dots.

[0099] The core of the quantum dots can be selected from a group II-VI compound, a group III-VI compound, a group III-V compound, a group III-II-V compound, a group IV-VI compound, a group I-III-VI compound, a group IV element, a group IV compound, and / or a combination (e.g., any suitable) thereof.

[0100] The II-VI compound can be selected from: binary compounds selected from the group consisting of CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, MgS, and / or mixtures (e.g., of any suitable kind) thereof; ternary compounds selected from the group consisting of CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe, MgZnS, and / or mixtures (e.g., of any suitable kind) thereof; and quaternary compounds selected from the group consisting of CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe, and / or mixtures (e.g., of any suitable kind) thereof.

[0101] The III-VI compound can include: binary compounds such as In2S3and / or In2Se3, and / or the like; ternary compounds such as InGaS3and / or InGaSe3, and / or the like; or any combination thereof.

[0102] The III-V compound can be selected from: binary compounds selected from the group consisting of GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, and / or mixtures (e.g., of any suitable kind) thereof; ternary compounds selected from the group consisting of GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InAlP, InNP, InNAs, InNSb, InPAs, InPSb, and / or mixtures (e.g., of any suitable kind) thereof; and quaternary compounds selected from the group consisting of GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb, and / or mixtures (e.g., of any suitable kind) thereof. The III-V compound can also include a Group II metal. For example, InZnP can be selected as the III-II-V compound.

[0103] The group IV-VI compound can be selected from binary compounds selected from the group consisting of SnS, SnSe, SnTe, PbS, PbSe, PbTe, and / or mixtures (e.g., of any suitable) thereof; ternary compounds selected from the group consisting of SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe, and / or mixtures (e.g., of any suitable) thereof; and quaternary compounds selected from the group consisting of SnPbSSe, SnPbSeTe, SnPbSTe, and / or mixtures (e.g., of any suitable) thereof. The group IV element can be selected from the group consisting of Si, Ge, and / or mixtures (e.g., of any suitable) thereof. The group IV compound can be a binary compound selected from the group consisting of SiC, SiGe, and / or mixtures (e.g., of any suitable) thereof.

[0104] The group I-III-VI compound can include a ternary compound selected from the group consisting of AgInS2, CuInS2, AgGaS2, CuGaS2, and / or mixtures (e.g., of any suitable) thereof or a quaternary compound such as AgInGaS2and / or CuInGaS2, etc.

[0105] In this case, the binary compound, the ternary compound, or the quaternary compound can exist in a particle at a substantially uniform concentration or can exist in substantially the same particle after being divided into a plurality of portions having different concentrations. In some embodiments, the quantum dot can have a core / shell structure in which one quantum dot surrounds another quantum dot. In the core / shell structure, the concentration of the element existing in the shell can have a concentration gradient that decreases as the distance from the core decreases.

[0106] In one or more embodiments, the quantum dot can have a core / shell structure including a core including the nanocrystal mentioned herein and a shell around (e.g., surrounding) the core. The shell of the quantum dot can serve as a protective layer to prevent or reduce chemical denaturation of the core and maintain the semiconductor property and / or can serve as a charged layer to impart electrophoretic properties to the quantum dot. The shell can have a single layer or a multi-layer structure. The shell of the quantum dot can include, as representative examples thereof, a metal oxide, a non-metal oxide, a semiconductor compound, and / or one or more (e.g., of any suitable) combinations thereof.

[0107] The metal oxide or non-metal oxide can include: a binary compound such as SiO2, Al2O3, TiO2, ZnO, MnO, Mn2O3, Mn3O4, CuO, FeO, Fe2O3, Fe3O4, CoO, Co3O4, NiO, and / or a mixture (e.g., any suitable mixture) thereof; or a ternary compound such as MgAl2O4, CoFe2O4, NiFe2O4, CoMn2O4, and / or a mixture (e.g., any suitable mixture) thereof, although they should not be limited thereto or thereby.

[0108] In some embodiments, the semiconductor compound can include CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnTeS, GaAs, GaP, GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP, AlSb, and / or a mixture (e.g., any suitable mixture) thereof, although they should not be limited thereto or thereby.

[0109] The quantum dot can be a particle having a nanoscale size. The quantum dot can have a full width at half maximum (FWHM) of a light emission wavelength spectrum of about 45 nanometers (nm) or less, about 40 nm or less, or about 30 nm or less. Color purity and color reproducibility can be improved within this range. In some embodiments, because light emitted by the quantum dot can be emitted in all directions, optical viewing angle can be improved.

[0110] The quantum dot can have a shape commonly used in the art, and it should not be specifically limited. In more detail, a spherical, pyramidal, multi-armed or cubic nanoparticle, a nanotube, a nanowire, a nanofiber, and / or a nanoplate, etc. can be applied to the quantum dot. The quantum dot can control the color of emitted light according to its particle size, and thus, the quantum dot can have one or more suitable emission colors such as blue, red, and green.

[0111] The scattering particle can scatter light generated by the light control pattern or light passing through the light control pattern. The scattering particle can be a particle having a relatively high density or specific gravity. The scattering particle can include a titanium oxide (TiO2) or a silica-based nanoparticle.

[0112] A fifth insulating layer 50 can be disposed on the color layer ACL. The fifth insulating layer 50 can encapsulate the color layer ACL and the first light control pattern CCF-R. The fifth insulating layer 50 can include an inorganic layer.

[0113] The encapsulation panel 200 can be disposed to face the display panel 100. The color filters CF-R, CF-G, and CF-B can be disposed on a lower surface of the second base layer BS2. An area in which two or more color filters among the first color filter CF-R, the second color filter CF-G, and the third color filter CF-B are disposed to be stacked on each other can be defined as a peripheral area NPXA. FIG. 4A A first pixel area PXA-R can be defined as an area in which only the first color filter CF-R among the color filters CF-R, CF-G, and CF-B is disposed.

[0114] A sixth insulating layer 60 can be disposed under the color filters CF-R, CF-G, and CF-B. The sixth insulating layer 60 can encapsulate the color filters CF-R, CF-G, and CF-B, and can include an inorganic layer. A seventh insulating layer 70 can be disposed under the sixth insulating layer 60. The seventh insulating layer 70 can provide a flat surface and can include an organic layer.

[0115] Method of manufacturing display apparatus

[0116] Hereinafter, a method of manufacturing the display apparatus DD will be described.

[0117] Reference FIG. 5A The method of manufacturing the display apparatus DD includes forming the display panel 100, forming the encapsulation panel 200, and combining the display panel 100 with the encapsulation panel 200. The method of forming the thin film encapsulation layer TFE of the display panel 100 and the elements disposed under the thin film encapsulation layer TFE should not be specifically limited, and thus details thereof will not be provided.

[0118] A first separation wall BW1 can be formed on the thin film encapsulation layer TFE of the display panel 100. In this case, a first opening BW-OPR can be formed to pass through the first separation wall BW1. A preliminary separation wall layer can be formed on the thin film encapsulation layer TFE, and then a photoresist layer can be formed on the preliminary separation wall layer. Then, an exposure process, a development process, and an etching process can be performed on the preliminary separation wall layer to form the first separation wall BW1. By substantially the same process, second and third separation walls corresponding to the second pixel area PXA-G and the third pixel area PXA-B shown in FIG. 1B, respectively, can be formed. FIG. 4A A reflective layer ML can be formed on the first separation wall BW1. The reflective layer ML can be formed to correspond to the inner side surface IS of the first separation wall BW1. The reflective layer ML can be formed to correspond to the outer side surface OS and the upper surface US of the first separation wall BW1. For example, a preliminary reflective layer can be formed by a sputtering process. A photoresist layer can be formed on the preliminary reflective layer. Then, the preliminary reflective layer can be patterned by an exposure process, a development process, and an etching process to form the reflective layer ML.

[0119] A color layer ACL can be formed on the reflective layer ML. A preliminary color layer can be formed to cover the first separation wall BW1 and the reflective layer ML, and a photoresist layer can be formed on the preliminary color layer. Then, an exposure process, a development process, and an etching process can be performed on the preliminary color layer to form the color layer ACL. The area in which the color layer ACL is formed can be determined according to the placement of a mask pattern formed by the photoresist layer. The color layer ACL can be formed on the reflective layer ML to be superposed with the inner side surface IS of the first separation wall BW1. The color layer ACL can be formed on the reflective layer ML to be superposed with the outer side surface OS and the upper surface US of the first separation wall BW1.

[0120] A first light control pattern CCF-R can be formed in the first opening BW-OPR. The first light control pattern CCF-R can be formed by an inkjet process. A first resin component in a liquid form mixed with the first quantum dot can be provided in the first opening BW-OPR. Then, the first resin component can be cured.

[0121] A fifth insulating layer 50 can be formed to cover the first light control pattern CCF-R and the first separation wall BW1. The fifth insulating layer 50 can be formed by depositing an inorganic material through a deposition process. A process of forming the fifth insulating layer 50 can not be provided.

[0122] Hereinafter, a method of forming the package panel 200 is described. A first color filter CF-R can be formed on the second base layer BS2 to be superposed with the first pixel area PXA-R. The first color filter CF-R can be superposed with the peripheral area NPXA. An organic layer including a dye or a pigment can be formed, and a photoresist layer can be formed on the organic layer. Then, an exposure process, a development process, and an etching process can be performed on the organic layer to form the first color filter CF-R.

[0123] The second color filter CF-G and the third color filter CF-B can be formed by a process similar to that of the first color filter CF-R. The second color filter CF-G and the third color filter CF-B can be superposed with the corresponding pixel areas PXA-G and PXA-B and the corresponding peripheral areas NPXA.

[0124] A sixth insulating layer 60 can be arranged under the color filters CF-R, CF-G, and CF-B. The sixth insulating layer 60 having a low refractive index can be formed by co-depositing hollow inorganic particles and an inorganic material. A seventh insulating layer 70 can be formed under the sixth insulating layer 60 by a deposition process. The seventh insulating layer 70 can function as a planarization layer and an encapsulation layer.

[0125] Referring to FIG. 5BSource light SL emitted from the light emitting element OLED can be emitted upward. Some source light SL2-1 and SL3-1 can be provided to the first light control pattern CCF-R arranged inside the first opening BW-OPR, and the color of the source light SL2-1 and SL3-1 can be converted by the quantum dot included in the first light control pattern CCF-R. The color-converted source light can be referred to as emitted light SL2-2 and SL3-2. Other source light SL1-1 and SL4-1 can be reflected by the reflective layer ML arranged to correspond to the inner side surface IS of the first opening BW-OPR, and the reflected light SL1-1' and SL4-1' can be provided to the first light control pattern CCF-R again. The color of the reflected light SL1-1' and SL4-1' can be converted by the quantum dot included in the first light control pattern CCF-R. The color-converted source light can be referred to as emitted light SL1-2 and SL4-2. Source light SL1-1 and SL4-1, the color of which is not converted by the quantum dot included in the first light control pattern CCF-R, can be reflected by the reflective layer ML and can be incident to the first light control pattern CCF-R. Accordingly, light conversion efficiency of the source light SL can be improved, and front luminance can be improved.

[0126] The first separation wall BW1 including the black colorant can prevent or reduce the source light SL from passing through the first separation wall BW1. In some embodiments, the reflective layer ML can prevent or reduce the source light SL from passing through the first separation wall BW1. Accordingly, light leakage or interference between pixels that can occur if light generated in one light emitting area passes through the first separation wall BW1 and is incident to the light control pattern arranged in the adjacent light emitting area (for example, light leakage or interference between pixels that occurs when light generated in one light emitting area passes through the first separation wall BW1 and is incident to the light control pattern arranged in the adjacent light emitting area) can be prevented or reduced.

[0127] Referring to FIG. 5C The color layer ACL can absorb a portion of light EX-L (hereinafter, referred to as external light) incident to the color layer ACL from the outside of the display panel 100 and can reduce the external light EX-L incident to the reflective layer ML. The first color filter CF-R can transmit red light in natural light, and the red light that passes through the first color filter CF-R and is emitted from the first color filter CF-R can be absorbed by the color layer ACL. Accordingly, a reflection phenomenon in which red light incident from the outside is reflected by the reflective layer ML and then travels back to the outside can be prevented or reduced.

[0128] Since the color layer ACL covers the reflective layer ML to be superposed with the upper surface US of the first separation wall BW1, reflection of the external light incident to the upper surface US of the first separation wall BW1 can be further reduced.

[0129] The reflective layer ML can include a first portion ML-I disposed on the inner side surface IS and the outer side surface OS of the first partition wall BW1 and a second portion ML-U superposed with the upper surface US of the first partition wall BW1, and the color layer ACL can be integrally superposed with the first portion ML-I and the second portion ML-U. Since the color layer ACL is integrally superposed with the first portion ML-I and the second portion ML-U, reflection of external light caused by the reflective layer ML can be prevented or reduced.

[0130] Table 1 shows measured values for luminous efficiency (%) of the display device DD and reflectance (%) of external light of the display device DD. Comparative Example 1 shows a display device not including the reference FIG. 5A to FIG. 5C A display device described with reference to the reflective layer ML and the color layer ACL. Comparative Example 2 shows a display device including the reference FIG. 5A to FIG. 5C A display device described with reference to the reflective layer ML but not including the color layer ACL. One or more embodiment examples show a display device including the reference FIG. 5A to FIG. 5C A display device described with reference to the reflective layer ML and the color layer ACL.

[0131] In Table 1, the luminous efficiency (%) is measured using a source light of about 450 nm, and is expressed as a relative value in the case where the luminous efficiency of Comparative Example 1 is set to 100%. The reflectance (%) of external light is measured by transmitting light using a D65 light source, and is expressed as a relative value in the case where the reflectance of Comparative Example 1 is set to 100%. SCI (including a specular component) is a result of measuring specular light and diffuse light that is incident and reflected, and SCE (excluding a specular component) is a result of measuring diffuse light that is incident and reflected. Light that is incident and reflected at the same angle can be referred to as specular light, and light that is scattered and reflected in multiple directions can be referred to as diffuse light.

[0132] Table 1

[0133]

[0134] Referring to the results of Table 1, it is observed that the luminous efficiency of the embodiment example can be improved compared to Comparative Example 1, and the reflectance of external light of the embodiment example can be reduced compared to Comparative Example 2. For example, if the reflective layer ML is arranged to correspond to the inner side surface IS of the separation wall BW, the luminous efficiency and brightness can be improved by the recirculation effect of the source light (for example, when the reflective layer ML is arranged to correspond to the inner side surface IS of the separation wall BW, the luminous efficiency and brightness can be improved by the recirculation effect of the source light). In addition, according to the present disclosure, because the color layer ACL (for example, arranged to correspond to the inner side surface IS of the separation wall BW) absorbs a portion of the external light, the reflectance of the external light can be reduced. For example, arranging the reflective layer ML along the inner side surface IS of the separation wall BW enhances the luminous efficiency and brightness by light recirculation. In addition, the color layer ACL positioned along the inner side surface IS of the separation wall BW absorbs external light, further reducing the reflectance of the external light.

[0135] In FIG. 5A to FIG. 5C , the description focuses on the first pixel area PXA-R, but FIG. 4A The second pixel area PXA-G and the third pixel area PXA-B can also have a cross-sectional structure similar to that of the first pixel area PXA-R. The second separation wall and the third separation wall can be arranged to correspond to the second pixel area PXA-G and the third pixel area PXA-B, respectively, and the second light control pattern and the scattering pattern can be arranged in the openings of the second separation wall and the third separation wall, respectively.

[0136] The second light control pattern can convert the source light into third color light. The third color light can be green light. The second light control pattern can include quantum dots to convert blue light into green light. The scattering pattern can transmit the source light without converting the source light. In this case, the scattering pattern can scatter the source light to improve the viewing angle.

[0137] FIG. 6A and FIG. 6B is a plan view showing the shape of the separation wall BW according to one or more embodiments of the present disclosure, and FIG. 6C is a plan view showing the shape of the color layer ACL according to one or more embodiments of the present disclosure.

[0138] FIG. 6AThe first separation wall BW1 defining the first opening BW-OPR corresponding to the first pixel region PXA-R, the second separation wall BW2 defining the second opening BW-OPG corresponding to the second pixel region PXA-G, and the third separation wall BW3 defining the third opening BW-OPB corresponding to the third pixel region PXA-B are shown as representative examples. The first separation wall BW1, the second separation wall BW2, and the third separation wall BW3 can be arranged to be spaced and / or separated from each other (e.g., spaced apart or separated). Each of the pixel regions PXA-R, PXA-G, and PXA-B can have a size substantially the same as a size of a corresponding one of the openings BW-OPR, BW-OPG, and BW-OPB, however, the present disclosure should not be limited thereto or thereby. The reflective layer ML and the color layer ACL can be arranged to be superposed with the inner side surface IS and the outer side surface OS of each of the first separation wall BW1, the second separation wall BW2, and the third separation wall BW3.

[0139] The reflective layer ML and the color layer ACL can be arranged to be superposed with the upper surface of each of the first separation wall BW1, the second separation wall BW2, and the third separation wall BW3. However, in order to distinguish the reflective layer ML and the color layer ACL from the first separation wall BW1, the second separation wall BW2, and the third separation wall BW3, FIG. 6A The upper surface of each of the first separation wall BW1, the second separation wall BW2, and the third separation wall BW3 is shown if viewed in the third direction DR3 (the upper surface of each of the first separation wall BW1, the second separation wall BW2, and the third separation wall BW3 when viewed in the third direction DR3).

[0140] Referring to FIG. 6B The reflective layer ML and the color layer ACL can be arranged to be superposed with the inner side surface IS and the outer side surface OS of the first separation wall BW1. According to the present embodiment, the reflective layer ML and the color layer ACL are arranged to be superposed with the inner side surface IS and the outer side surface OS of each of the first separation wall BW1, the second separation wall BW2, and the third separation wall BW3. FIG. 6A Unlike the separation walls BW shown in

[0141] Unlike the separation walls BW shown in FIG. 6A and FIG. 6B The separation wall BW-D (hereinafter, referred to as an additional separation wall) connected to the first separation wall BW1, the second separation wall BW2, and the third separation wall BW3 can be further arranged around the first separation wall BW1, the second separation wall BW2, and the third separation wall BW3, unlike the separation walls BW shown in FIG. 6C

[0142] FIG. 6C The color layer ACL superposed with the first separation wall BW1, the second separation wall BW2, and the third separation wall BW3 is shown.​FIG. 6C The structure in which the reflective layer ML is arranged on the upper surfaces of each of the first, second, and third separation walls BW1, BW2, and BW3 is shown, however, the reflective layer ML can not be arranged on the upper surfaces of each of the first, second, and third separation walls BW1, BW2, and BW3.

[0143] In FIG. 6C , the reflective layer ML can be arranged on the upper surfaces of the first, second, and third separation walls BW1, BW2, and BW3 as shown in FIG. 5A . The color layer ACL and the reflective layer ML can be superposed with the additional separation wall BW-D, and the color layer ACL and the reflective layer ML can be arranged between the first, second, and third separation walls BW1, BW2, and BW3.

[0144] FIG. 7 is a cross-sectional view of the display device DD taken along the line I-I' of FIG. 4A . In FIG. 7 , a detailed description of elements identical to those described with reference to FIG. 1A to FIG. 5C will not be provided, and a description will be focused on features different from those of the display device DD described with reference to FIG. 5A to FIG. 5C .

[0145] FIG. 7 The light conversion panel 200-1 of FIG. 5A may correspond to the encapsulation panel 200 of FIG. 7 . The light conversion panel 200-1 of FIG. 5A may include the first color filter CF-R arranged under the second base layer BS2, the sixth insulating layer 60, and the seventh insulating layer 70. If compared to the encapsulation panel 200 of FIG. 5A , the light conversion panel 200-1 can further include the separation wall BW, the reflective layer ML, the color layer ACL, the first light control pattern CCF-R, and the fifth insulating layer 50 additionally arranged under the seventh insulating layer 70 (when compared to the encapsulation panel 200 of

[0146] The seventh insulating layer 70 can provide a flat surface under it. The separation wall BW through which the first opening BW-OPR is defined can be arranged under the flat surface.

[0147] A region of the surface of the separation wall BW which is not in contact with the seventh insulating layer 70 and faces the second base layer BS2 can be defined as a lower surface LS, a region of the surface of the separation wall BW which is inclined with respect to the second base layer BS2 and faces the first light control pattern CCF-R can be defined as an inner side surface IS, and a region of the surface of the separation wall BW which is inclined with respect to the second base layer BS2 and does not face the first light control pattern CCF-R can be defined as an outer side surface OS.

[0148] As described with reference to FIG. 5A , the reflective layer ML can be disposed at least on the inner side surface IS of the separation wall BW. In the present embodiment, the reflective layer ML can also be disposed on the lower surface LS of the separation wall BW. In the present embodiment, the reflective layer ML can also be disposed on the outer side surface OS of the separation wall BW, however, the present disclosure should not be limited thereto or thereby. The reflective layer ML can overlap the non-light emitting area NLA and can not overlap the first light emitting area LA-R.

[0149] The color layer ACL can be disposed on the reflective layer ML to overlap at least the inner side surface IS of the separation wall BW. The color layer ACL can also overlap at least the lower surface LS of the separation wall BW. The color layer ACL can also overlap at least the outer side surface OS of the separation wall BW. The color layer ACL can cover the reflective layer ML.

[0150] The first light control pattern CCF-R can be disposed in the first opening BW-OPR of the separation wall BW. The first light control pattern CCF-R can be in contact with the color layer ACL.

[0151] The fifth insulating layer 50 can be disposed under the color layer ACL. The fifth insulating layer 50 can encapsulate the color layer ACL and the first light control pattern CCF-R and can include an inorganic layer.

[0152] FIG. 8 and FIG. 9 are cross-sectional views of a display device DD according to one or more embodiments of the present disclosure. In FIG. 8 and FIG. 9 , detailed descriptions of elements identical to those described with reference to FIG. 1A to FIG. 5C will not be provided. Hereinafter, features different from those of the display device DD described with reference to FIG. 8 and FIG. 9 will be described. FIG. 5A to FIG. 5C

[0153] With reference to FIG. 8 , the display device DD can include one first base layer BS1. The display device DD can be formed by forming components on one first base layer BS1 via a continuous process without the need for FIG. 5A ​The process of bonding the display panel 100 and the encapsulation panel 200 is described.

[0154] The fifth insulating layer 50-1 can encapsulate the separator wall BW and the first optical control pattern CCF-R. As an example, the fifth insulating layer 50-1 can be an inorganic layer.

[0155] A sixth insulating layer 60-1 can be disposed on the fifth insulating layer 50-1. The sixth insulating layer 60-1 can serve as a planarization layer and can have a refractive index equal to or greater than about 1.1 and equal to or less than about 1.5. The refractive index of the sixth insulating layer 60-1 can be adjusted according to the proportion of hollow inorganic particles and / or voids in the sixth insulating layer 60-1. The sixth insulating layer 60-1 can provide source and converted light more vertically.

[0156] The seventh insulating layer 70-1 can be disposed on the sixth insulating layer 60-1. The seventh insulating layer 70-1 can be an inorganic layer of the structure encapsulated below it. The seventh insulating layer 70-1 may not be provided.

[0157] The first color filter CF-R, the second color filter CF-G, and the third color filter CF-B can be disposed on the seventh insulating layer 70-1. An eighth insulating layer 80-1 can be disposed on the first color filter CF-R, the second color filter CF-G, and the third color filter CF-B, and the eighth insulating layer 80-1 can cover the first color filter CF-R, the second color filter CF-G, and the third color filter CF-B and can provide a flat surface. The eighth insulating layer 80-1 can be an organic layer.

[0158] In some embodiments, the shape and arrangement of the partition wall BW, when viewed in a plane, are consistent with a reference. FIG. 5A to FIG. 6C The shape and arrangement of the partition wall BW described are substantially the same as those of the reference (when viewed in a plane, the shape and arrangement of the partition wall BW are the same). FIG. 5A to FIG. 6C The shape and arrangement of the partition wall BW described are basically the same.

[0159] Reference FIG. 9 , and reference FIG. 5A Similar to the described display device DD, the display device DD according to this embodiment may include a display panel 100, an encapsulation panel 200, and a filling material FM. In this embodiment, no similar display device DD will be provided. FIG. 5A The same detailed description of the component being described.

[0160] The separator wall BW can be disposed on the thin-film encapsulation layer TFE. The separator wall BW can include an inner separator wall BW-1 and an outer separator wall BW-2. Viewed in a plane, the inner separator wall BW-1 can be... FIG. 6A to FIG. 6CThe first separation wall BW1 can be arranged in the display device DD as shown in FIG. 1A, and the outer separation wall BW-2 can be arranged around (e.g., surrounding) the inner separation wall BW1 (the inner separation wall BW1 can be arranged to be spaced apart and / or separated from (e.g., spaced apart or separated from) the outer separation wall BW-2 when viewed in a plane). FIG. 6A to FIG. 6C The first separation wall BW1 can be arranged in the display device DD as shown in FIG. 1A, and the outer separation wall BW-2 can be arranged around (e.g., surrounding) the inner separation wall BW1 (the inner separation wall BW1 can be arranged to be spaced apart and / or separated from (e.g., spaced apart or separated from) the outer separation wall BW-2 when viewed in a plane).

[0161] According to the present embodiment, the color layer ACL is omitted, and the separation wall BW can function as the color layer ACL, unlike the display device DD described with reference to FIG. 5A According to one or more embodiments, the separation wall BW can have the same color as the source light. The separation wall BW can have a blue color.

[0162] The fifth insulating layer 50-2 can be arranged on the separation wall BW. The fifth insulating layer 50-2 can encapsulate the first light control pattern CCF-R and the separation wall BW. The fifth insulating layer 50-2 can include an inorganic layer.

[0163] With reference to FIG. 9 , the first opening BW-OPR can be defined to pass through the inner separation wall BW1, and the first light control pattern CCF-R can be formed in the first opening BW-OPR. A surface of the inner separation wall BW1 facing the first light control pattern CCF-R can be defined as an inner side surface IS of the inner separation wall BW1. A surface of the inner separation wall BW1 facing the outer separation wall BW-2 can be defined as an outer side surface OS of the inner separation wall BW1. In some embodiments, a surface of the outer separation wall BW-2 facing the inner separation wall BW1 can be defined as an inner side surface IS of the outer separation wall BW-2, and a surface of the outer separation wall BW-2 not facing the inner separation wall BW1 can be defined as an outer side surface OS of the outer separation wall BW-2. The definition of the upper surface US of the inner separation wall BW1 and the outer separation wall BW-2 can each independently be the same as defined herein with reference to FIG. 5A

[0164] According to the present embodiment, the reflective layer ML can be arranged to correspond to the outer side surface OS and the upper surface US of the inner separation wall BW1. According to the present embodiment, the reflective layer ML can also be arranged to correspond to the inner side surface IS and the upper surface US of the outer separation wall BW-2.

[0165] ​Source light emitted from the light emitting element OLED can travel upward. A portion of the source light can be provided to the first light control pattern CCF-R arranged inside the first opening BW-OPR, and a color of the portion of the source light can be converted by quantum dots included in the first light control pattern CCF-R.

[0166] Another portion of the source light can be incident to the inner separation wall BW-1, and then can be reflected by the reflective layer ML. The reflected light reflected by the reflective layer ML can be incident to the first light control pattern CCF-R again after passing through the inner separation wall BW-1 and being reflected by the reflective layer ML. Accordingly, light conversion efficiency of the source light can be improved, and front luminance can be improved.

[0167] The separation wall BW can absorb a portion of light incident to the separation wall BW from an outside of the display panel 100. Since the first color filter CCF-R transmits red light among natural light, red light that passes through the first color filter CCF-R and is emitted from the first color filter CCF-R can be absorbed by the separation wall BW. For example, the first color filter CCF-R can allow red light from a natural source such as sunlight to pass through the first color filter CCF-R. That is, such a filter is designed to allow light of red wavelength to pass through while blocking or absorbing light of other colors of wavelength. Accordingly, accuracy of red displayed (e.g., on a screen) can be enhanced or improved. Accordingly, a reflection phenomenon in which red light incident from the outside is reflected by the reflective layer ML and then travels to the outside can be prevented or reduced.

[0168] Referring to FIG. 9 An organic material pattern MSP can be further arranged on the reflective layer ML. The organic material pattern MSP can include a base resin and an additive, and can act as a mask in a process of forming the reflective layer ML. The reflective layer ML and the organic material pattern MSP can have substantially the same shape as each other if viewed in a plane (the reflective layer ML and the organic material pattern MSP can have substantially the same shape as each other when viewed in a plane). The organic material pattern MSP can include a black colorant. The organic material pattern MSP can absorb external light incident to the reflective layer ML.

[0169] A planarization layer 50-3 can be further arranged on the organic material pattern MSP and the fifth insulating layer 50-2. The planarization layer 50-3 can include an organic layer and can provide a flat surface.

[0170] According to FIG. 9 the display panel 100 shown in FIG. 5A the display panel 100 shown in FIG. 5A the separation wall BW of the display panel 100 shown in FIG. 9The partition wall BW includes an inner partition wall BW-1 and an outer partition wall BW-2.

[0171] Then, a first light control pattern CCF-R can be formed in the first opening BW-OPR of the inner partition wall BW-1. The first light control pattern CCF-R can be formed by an inkjet process.

[0172] The fifth insulating layer 50-2 can be formed to cover the first light control pattern CCF-R and the partition wall BW. The fifth insulating layer 50-2 can be formed by depositing an inorganic material through a deposition process. Then, a reflective layer ML can be formed. The reflective layer ML can be formed in a space between the outer side surface OS of the inner partition wall BW-1 and the inner side surface IS of the outer partition wall BW-2 by a sputtering process. The organic material pattern MSP and the fifth insulating layer 50-2 can be sequentially formed.

[0173] In one or more embodiments, the display device DD can be a component of and / or applied to an electronic device such as a smart phone, a television, a monitor, a tablet, an electric vehicle, a mobile phone, a tablet personal computer (PC), a mobile communication terminal, an electronic notebook, an electronic book, a portable multimedia player (PMP), a navigation device, an ultra-mobile personal computer (UMPC), a laptop computer, a billboard, an Internet of Things (IoT) device, a smart watch, a watch phone, or a head-mounted display (HMD). For example, the display device DD can be applied to a display unit of a television, a laptop computer, a monitor, a billboard, or an Internet of Things (IoT) device. Alternatively, in one or more embodiments, the display device DD can be applied to a smart watch, a watch phone, and / or a head-mounted display (HMD) for implementing virtual reality and / or augmented reality.

[0174] Terms such as "substantially," "about," and "approximately" are used as terms of approximation, and not as terms of degree, and are intended to account for the inherent deviations in measured or calculated values that would be recognized by those of ordinary skill in the art. They can include the stated value and a range of acceptable values that would be determined by one of ordinary skill in the art to be an acceptable range for the value in question, e.g., "about" can mean one or more standard deviations, or ±30%, ±20%, ±10%, ±5% of the stated value.

[0175] The numerical ranges recited in this disclosure include and are intended to disclose all sub-ranges encompassed therein. For example, a range of "1.0 to 10.0" is intended to include and disclose all sub-ranges, such as 2.4 to 7.6, based on the same minimum and maximum values, as if set forth explicitly. Thus, the Applicant reserves the right to amend this specification, including the claims, to expressly recite any sub-ranges encompassed within the ranges explicitly recited.

[0176] The display device, electronic device, apparatus manufacturing the same, and / or any other related apparatus or component according to embodiments of the disclosure described herein can be implemented using any suitable hardware, firmware (e.g., application specific integrated circuit), software, or combination of software, firmware, and hardware. For example, one or more suitable components of the display device and / or electronic device can be formed on one integrated circuit (IC) chip or on separate IC chips. Also, one or more suitable components of the display device and / or electronic device can be implemented on a flexible printed circuit film, a tape carrier package (TCP), a printed circuit board (PCB), or formed on a substrate. Further, one or more suitable components of the display device and / or electronic device can be a process or thread, running on one or more processors, in one or more computing devices, executing computer program instructions and interacting with other system components for performing one or more suitable functions described herein. The computer program instructions can be stored in a memory which can be implemented in the computing device using a standard memory device, such as random access memory (RAM). The computer program instructions can also be stored in other non-transitory computer-readable media such as, for example, a CD-ROM, a flash drive, etc. Also, those skilled in the art will appreciate that functions of one or more suitable computing devices can be combined or integrated into a single computing device, or functions of a particular computing device can be distributed across one or more other computing devices, without departing from the scope of embodiments of the present disclosure.

[0177] In the context of the present application and unless otherwise defined, the term "use" and variations thereof can be considered synonymous with the term "utilize" and variations thereof, respectively.

[0178] In view of the overall disclosure, those of ordinary skill in the art will appreciate that each suitable feature of one or more suitable embodiments of the present disclosure can be combined, in part or in whole, with each other, and can be interlocked and operate in one or more suitable manners technically, unless otherwise stated or implied, and each embodiment can be implemented independently of or in conjunction with each other in any suitable manner.

[0179] While one or more embodiments of the present disclosure have been described, it is understood that the present disclosure should not be limited to these embodiments but rather can be modified in one or more suitable manners within the spirit and scope of the present disclosure as claimed.

[0180] Accordingly, the disclosed subject matter should not be limited to any single embodiment described herein, but rather should be construed in breadth, according to the appended claims and their equivalents.

Claims

1. A display device, characterized by comprising: The display device includes: a first base layer; a first light emitting element and a second light emitting element, each of the first and second light emitting elements being on the first base layer and configured to emit source light; a first partition wall through which a first opening is defined, the first opening corresponding to the first light emitting element; a first light control pattern inside the first opening; a reflective layer on at least an inner side surface of the first partition wall defining the first opening; and a color layer on the reflective layer, the color layer at least overlapping the inner side surface of the first partition wall and absorbing light incident to the color layer from an outside of the display device.

2. The display device according to claim 1, wherein The reflective layer is further on an upper surface of the first partition wall.

3. The display device according to claim 2, wherein The color layer is on the reflective layer to further overlap the upper surface of the first partition wall.

4. The display device according to claim 3, wherein The reflective layer includes: a first portion on the inner side surface of the first partition wall; and a second portion overlapping the upper surface of the first partition wall, and wherein the color layer overlaps the first and second portions integrally.

5. The display device according to claim 1, wherein The reflective layer is further on an outer side surface of the first partition wall.

6. The display device according to claim 5, wherein The color layer is on the reflective layer to further overlap the outer side surface of the first partition wall.

7. The display device according to claim 1, wherein The source light is blue light.

8. The display device according to claim 7, wherein The first light control pattern includes quantum dots to convert the blue light to red or yellow light.

9. The display device according to claim 1, wherein The first partition wall includes a light blocking material.

10. An electronic device, comprising: The electronic device includes a display device including: a first base layer; a first light emitting element and a second light emitting element, each of the first and second light emitting elements being on the first base layer and configured to emit source light; a first partition wall through which a first opening is defined, the first opening corresponding to the first light emitting element; a first light control pattern inside the first opening; a reflective layer on at least an inner side surface of the first partition wall defining the first opening; and a color layer on the reflective layer, the color layer at least overlapping the inner side surface of the first partition wall and absorbing light incident to the color layer from an outside of the electronic device.

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