Display device and electronic device

Abstract

A display device and an electronic device are provided. The display device includes a base layer, a pixel defining layer on the base layer and including a light emitting opening in the pixel defining layer, a light emitting element overlapping a pixel region and generating source light, an encapsulation layer including a first inorganic layer covering the light emitting element, an organic layer on the first inorganic layer, and a second inorganic layer on the organic layer, a display device includes an encapsulation layer, a first dam pattern including a first dam opening in the first dam pattern, a bank on the encapsulation layer, a light control pattern in the opening and converting source light into output light, a second dam pattern on the bank, the bank including the opening, the second dam pattern including a second dam opening, and a color filter overlapping with a pixel region.

Description

Technical Field

[0001] The present disclosure relates to a display device. For example, the present disclosure relates to a display device including a dam pattern. Background Art

[0002] As display panels, emissive display panels that generate and emit light by themselves and transmissive display panels that transmit source light after changing the optical properties of source light generated by a light source are widely used. In transmissive display panels, quantum dots are used to change the optical properties of the source light.

[0003] It is to be understood that the present background technology of the technical section is intended, in part, to provide a useful background for understanding the technology. However, the present background technology of the technical section may also include ideas, concepts or cognitions that are not known or understood by those skilled in the relevant art before the corresponding effective filing date of the subject matter disclosed herein. Summary of the Invention

[0004] The present disclosure provides a display device having improved color characteristics by preventing color mixing between pixels that occurs due to a decrease in the size of pixels as resolution increases.

[0005] Embodiments may include a display device, the display device including a base layer, a pixel defining layer, a light emitting element, an encapsulation layer, a first dam pattern, a bank, a light-controlling pattern, a second dam pattern, and a color filter. The base layer includes a pixel region and a peripheral region surrounding the pixel region. The pixel defining layer is disposed on the base layer. The pixel defining layer includes a light-emitting opening in the pixel defining layer. The light emitting element overlaps the pixel region and generates source light. The encapsulation layer includes a first inorganic layer covering the light emitting element, an organic layer disposed on the first inorganic layer, and a second inorganic layer disposed on the organic layer. The first dam pattern is disposed on the pixel defining layer. The first dam pattern includes a first dam opening in the first dam pattern. The first dam opening overlaps the pixel region. The bank is disposed on the encapsulation layer. The bank includes an opening in the bank. The light-controlling pattern is disposed in the opening and converts the source light into output light. The second dam pattern is disposed on the bank. The second dam pattern includes a second dam opening in the second dam pattern. The color filter overlaps the pixel region. The organic layer is disposed in the first dam opening, and the second dam opening is filled with a filling material.

[0006] The transmittance of the first dam pattern with respect to the source light may be lower than that of the encapsulation layer, and the transmittance of the second dam pattern with respect to the source light may be lower than that of the filling material.

[0007] The transmittance of the second dam pattern with respect to the output light may be lower than the transmittance of the filling material with respect to the output light.

[0008] The display device may further include a first covering layer covering the bank and the light-controlling pattern.

[0009] The first cover layer may contact the light-controlling pattern and have a refractive index equal to or greater than about 1.0 and equal to or less than about 1.5.

[0010] The first dam pattern may be disposed on the pixel defining layer and above the light emitting element.

[0011] The first dam pattern may be disposed between the first inorganic layer and the organic layer.

[0012] The first dam pattern may be disposed between the first inorganic layer and the second inorganic layer, and an upper surface of the first dam pattern may contact the second inorganic layer.

[0013] The filling material may have a refractive index equal to or greater than about 1.0 and equal to or less than about 1.5.

[0014] The display device may further include a low refractive index layer disposed between the color filter and the filling material.

[0015] The display device may further include a reflective pattern disposed on an inner side surface of the first dam pattern.

[0016] The display device may further include a blocking filter disposed on a lower surface of the color filter. The pixel region may be provided in a plurality to include a first pixel region, a second pixel region, and a third pixel region, the color filter may be provided in a plurality to include a first color filter overlapping with the first pixel region and transmitting a first color light, a second color filter overlapping with the second pixel region and transmitting a second color light, and a third color filter overlapping with the third pixel region and transmitting a third color light, and the blocking filter overlaps with the first pixel region and the second pixel region and does not overlap with the third pixel region.

[0017] The blocking color filter may have an extinction coefficient equal to or greater than about 0.005 and equal to or less than about 0.5 with respect to the third color light.

[0018] The blocking color filter may have a transmittance equal to or greater than about 90% with respect to each of the first color light and the second color light.

[0019] One of the first color light and the second color light may be red light or green light, and the third color light may be blue light.

[0020] An embodiment may include a display device, the display device may include a base layer, a pixel defining layer, a light emitting element, an encapsulation layer, a first dam pattern, a bank, a first light-control pattern, a second light-control pattern, a third light-control pattern, and a second dam pattern, the base layer including a first pixel region, a second pixel region, and a third pixel region and a peripheral region surrounding the first pixel region, the second pixel region, and the third pixel region, the pixel defining layer being arranged on the base layer, the pixel defining layer including a light emitting opening in the pixel defining layer, the light emitting element overlapping the first pixel region, the second pixel region, and the third pixel region and generating source light, the encapsulation layer including a first inorganic layer covering the light emitting element, an organic layer arranged on the first inorganic layer, and a second inorganic layer arranged on the organic layer, A first dam pattern is arranged on the pixel defining layer, the first dam pattern including a 1-1 dam opening, a 1-2 dam opening, and a 1-3 dam opening in the first dam pattern, the 1-1 dam opening, the 1-2 dam opening, and the 1-3 dam opening overlapping the first pixel region, the second pixel region, and the third pixel region, respectively. A bank is arranged on the first dam pattern, including a first opening, a second opening, and a third opening in the bank. A first light-control pattern, a second light-control pattern, and a third light-control pattern are arranged in the first opening, the second opening, and the third opening, respectively, and convert optical properties of source light. A second dam pattern is arranged on the bank, and the second dam pattern includes a 2-1 dam opening, a 2-2 dam opening, and a 2-3 dam opening included in the second dam pattern. An organic layer is arranged in the 1-1 dam opening, the 1-2 dam opening, and the 1-3 dam opening, and the 2-1 dam opening, the 2-2 dam opening, and the 2-3 dam opening are filled with a filling material.

[0021] The display device may also include a first color filter, a second color filter, and a third color filter, which are arranged on the filling material, overlap with the first pixel area, the second pixel area, and the third pixel area, respectively, and transmit the first color light, the second color light, and the third color light, respectively.

[0022] The display device may further include a blocking filter disposed on lower surfaces of the first and second color filters, and the blocking filter overlaps the first and second pixel regions and does not overlap the third pixel region.

[0023] The blocking color filter may have an extinction coefficient equal to or greater than about 0.005 and equal to or less than about 0.5 with respect to the third color light.

[0024] The blocking color filter may have a transmittance equal to or greater than about 90% with respect to each of the first color light and the second color light.

[0025] Embodiments may include an electronic device that is activated in response to an electrical signal and includes a display device that is curved relative to a virtual axis extending in a first direction, an electronic module overlapping the display device, and a housing accommodating the display device. The display device may include a base layer, a pixel defining layer, a light emitting element, an encapsulation layer, a first dam pattern, a dam, a light control pattern, a second dam pattern, and a color filter, wherein the base layer includes a pixel region and a peripheral region surrounding the pixel region, the pixel defining layer is disposed on the base layer, the pixel defining layer includes a light emitting opening in the pixel defining layer, the light emitting element overlaps the pixel region and generates source light, the encapsulation layer includes a first inorganic layer covering the light emitting element, an organic layer disposed on the first inorganic layer, and a second inorganic layer disposed on the organic layer, the first dam pattern is disposed on the pixel defining layer, the first dam pattern includes a first dam opening in the first dam pattern, the first dam opening overlaps the pixel region, the dam is disposed on the encapsulation layer, the dam includes an opening in the dam, the light control pattern is disposed in the opening and converts the source light into output light, the second dam pattern is disposed on the dam, the second dam pattern includes a second dam opening in the second dam pattern, and the color filter overlaps the pixel region. An organic layer is disposed in the first dam opening, and the second dam opening is filled with a filling material.

[0026] The electronic device may be a television, a computer monitor, an outdoor billboard, a mobile phone, a tablet computer, a navigation unit, a gaming unit or a smart watch.

[0027] The electronic module may include a control module, an image input module and a memory.

[0028] According to the above, a display device may include the first dam pattern and the second dam pattern to prevent color mixing between pixels in a high-resolution display device, and thus may improve color characteristics of the display device.

[0029] According to the above, the display device may include an additional color filter that prevents color mixing between pixels, and thus, the color characteristics of the display device may be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and other advantages of the present disclosure will become readily apparent by referring to the following detailed description when considered in conjunction with the accompanying drawings, in which:

[0031] Figure 1 is a schematic perspective view of a display device according to an embodiment;

[0032] Figure 2 is a schematic cross-sectional view of a display device according to an embodiment;

[0033] Figure 3 is a schematic plan view of a display substrate according to an embodiment;

[0034] Figure 4is an enlarged plan view of a display area according to an embodiment;

[0035] Figures 5A to 5F It is along Figure 4 A schematic cross-sectional view taken along line II';

[0036] Figure 6A is a graph showing the relationship between wavelength and spectrum intensity measured in the first pixel area according to a comparative example and an embodiment;

[0037] Figure 6B is a graph showing the relationship between wavelength and spectrum intensity measured in the second pixel area according to the comparative example and the embodiment;

[0038] Figure 6C is a graph showing the relationship between wavelength and spectrum intensity measured in the third pixel area according to the comparative example and the embodiment;

[0039] Figure 6D is a graph showing light efficiency and color gamut according to a comparative example and an embodiment;

[0040] Figures 7 to 9 According to the implementation method Figure 4 A schematic cross-sectional view taken along line II';

[0041] Figure 10 is a graph showing the relationship between light transmittance and wavelength of a blocking color filter according to an embodiment;

[0042] Figure 11A is a graph showing a relationship between transmittance of a blocking color filter with respect to blue light and thickness of the blocking color filter according to an embodiment;

[0043] Figure 11B is a graph showing a relationship between transmittance of a blocking color filter and wavelength when the thickness of the blocking color filter is varied according to an embodiment;

[0044] Figure 12A is a graph showing the relationship between wavelength and spectrum intensity measured in the first pixel area according to a comparative example and an embodiment;

[0045] Figure 12B is a graph showing the relationship between wavelength and spectrum intensity measured in the second pixel area according to a comparative example and an embodiment;

[0046] Figure 12C is a graph showing light efficiency and color gamut according to a comparative example and an embodiment;

[0047] Figure 13 is a perspective view of an electronic device according to an embodiment of the present disclosure;

[0048] Figure 14 It shows Figure 13 A view of the folded state of the electronic device shown in ;

[0049] Figure 15 yes Figure 13 An exploded perspective view of the electronic device shown in ;

[0050] Figure 16A is a perspective view of an electronic device according to an embodiment of the present disclosure;

[0051] Figure 16B is a perspective view of a curved electronic device according to an embodiment of the present disclosure; and

[0052] Figure 17 yes Figure 15 A block diagram of the electronic device shown in FIG. DETAILED DESCRIPTION

[0053] The present disclosure will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments are shown. However, the present disclosure may be embodied in different forms and should not be construed as limited to the 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.

[0054] In the drawings, for convenience of description and for clarity, the size, thickness, ratio and magnitude of elements may be exaggerated. Throughout the specification, like reference numerals refer to like elements.

[0055] In this disclosure, it will be understood that when an element (or region, layer or portion) is referred to as being "on," "connected to" or "coupled to" another element or layer, it can be directly on, directly connected to or coupled to the other element or layer, or intervening elements or layers may be present.

[0056] Throughout the specification, similar reference numerals refer to similar elements. In the drawings, the thickness, proportion, and size of components may be exaggerated for effective description of technical contents.

[0057] For purposes of its meaning and interpretation, in the specification and claims, the term "and / or" is intended to include any combination of the terms "and" and "or." For example, "A and / or B" may be understood to mean "A, B, or A and B." The terms "and" and "or" may be used in a conjunction or disjunction and may be understood to be equivalent to "and / or."

[0058] For purposes of its meaning and interpretation, in the specification and claims, the phrase "at least one of" is intended to include the meaning of "at least one selected from the group of..." For example, "at least one of A and B" is understood to mean "A, B, or A and B."

[0059] It will be understood that although the terms first, second, etc. can be used to describe various elements in this article, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. Therefore, without departing from the teachings of the present disclosure, the first element discussed below can be referred to as the second element.

[0060] 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.

[0061] For convenience of description, spatially relative terms (such as "beneath," "below," "lower," "above," "upper," and the like) may be used herein to describe the relationship of one element or feature to another element or feature as shown in the figures.

[0062] The term "overlap" or "overlapped" means that a first object may be above or below a second object or to the side of the second object, and vice versa. Additionally, the term "overlap" may include stacking, stacking, facing, extending over, covering, or partially covering, or any other suitable term that will be appreciated and understood by those of ordinary skill in the art.

[0063] The terms "facing" and "facing" mean that the first element can be directly or indirectly opposite to the second element. In the case where a third element is between the first and second elements, although still facing each other, the first and second elements can be understood as indirectly opposite to each other.

[0064] When an element is described as “not” “overlapping” another element, this may include the elements being spaced apart, offset, or separated from each other, or any other suitable terminology as would be appreciated and understood by one of ordinary skill in the art.

[0065] The terms “comprise,” “comprising,” “include,” and / or “including,” “has,” “have,” and / or “having,” and variations thereof, when used in this specification, specify the presence of stated features, integers, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0066] As used herein, "about" or "approximately" is inclusive of the stated value and means within an acceptable range of deviation for the particular value as determined by one of ordinary skill in the art, taking into account errors associated with the measurements and with the measurement of a particular quantity (i.e., limitations of the measurement system). For example, "about" can mean within one or more standard deviations, or within ±30%, ±20%, ±10%, ±5% of the stated value.

[0067] Unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. It will also be understood that, unless expressly defined as such herein, terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.

[0068] Hereinafter, embodiments will be described with reference to the accompanying drawings.

[0069] Figure 1 is a schematic perspective view of a display device DD according to an embodiment. Figure 2 is a schematic cross-sectional view of a display device DD according to an embodiment.

[0070] Reference Figure 1 The display device DD may include a display surface DD-IS for displaying images on its front surface. The display device DD may display images toward a third direction DR3 via the display surface DD-IS, which is substantially parallel to a plane defined by the first direction DR1 and the second direction DR2. The third direction DR3 may intersect both the first direction DR1 and the second direction DR2, and a normal direction of the display surface DD-IS may be substantially parallel to the third direction DR3. Images displayed via the display surface DD-IS may include still images and videos.

[0071] In an embodiment, the front surface (or upper surface) and the rear surface (or lower surface) of each component of the display device DD may be defined relative to the direction in which an image is displayed. The front surface and the rear surface may be opposite to each other in the third direction DR3. The directions indicated by the first direction DR1, the second direction DR2, and the third direction DR3 are relative to each other, and therefore, the directions indicated by the first direction DR1, the second direction DR2, and the third direction DR3 may be changed to other directions.

[0072] The display device DD may include a display area DA and a non-display area NDA. Unit pixels PXU may be arranged (or disposed) in the display area DA and may emit light in response to electrical signals to display an image through the display area DA. The unit pixels PXU may not be arranged in the non-display area NDA. The non-display area NDA may be defined along an edge of the display surface DD-IS and may surround the display area DA.

[0073] The display device DD may be included in an electronic device that is activated in response to an electrical signal. The electronic device may include various embodiments. As examples, the electronic device may be applied to large electronic products such as televisions, computer monitors, and outdoor billboards, as well as small and medium-sized electronic products such as mobile phones, tablet computers, navigation units, gaming units, and smart watches. However, the electronic device according to the embodiments of the present invention is not limited to the above-mentioned examples and may also be employed in other electronic devices without departing from the present invention.

[0074] The display device DD may be flexible. As used herein, the term "flexible" refers to the ability to bend from a fully curved structure to a structure that bends at a scale of a few nanometers. For example, the display device DD may be a curved display device or a foldable display device. Depending on the embodiment, the display device DD may also be rigid.

[0075] Reference Figure 1 , the unit pixels PXU may be arranged in rows and columns in the display device DD. The unit pixel PXU may be the smallest repeating unit, and one unit pixel PXU may include at least one pixel region PXA-R, PXA-G, and PXA-B (refer to Figure 4 According to an embodiment, one unit pixel PXU may include pixel regions PXA-R, PXA-G, and PXA-B (refer to FIG. Figure 4 ).

[0076] Reference Figure 2 , the display device DD may include a first display substrate 100 and a second display substrate 200. The second display substrate 200 may be arranged to be spaced apart from the first display substrate 100 upward.

[0077] The cell gap GP may be a space defined between the first display substrate 100 and the second display substrate 200, which are spaced apart from each other. The cell gap GP may be maintained by the sealing member SLM.

[0078] The sealing member SLM may be arranged between the first display substrate 100 and the second display substrate 200 and may overlap the non-display area NDA. When viewed on a plane, the sealing member SLM may be aligned with the edge of the second display substrate 200, however, it should not be limited to or restricted in this manner. The sealing member SLM may maintain the second display substrate 200 and the first display substrate 100 so that the second display substrate 200 and the first display substrate 100 are spaced apart from each other by a selectable distance, and may prevent external oxygen and moisture from entering the second display substrate 200 and the first display substrate 100.

[0079] The sealing member SLM may include a binder resin and an inorganic filler mixed with the binder resin. The sealing member SLM may also include other additives. The additives may include an amine curing agent and a photoinitiator. The additives may also include a silane additive and an acrylic additive. The sealing member SLM may include an inorganic material, such as a frit.

[0080] Figure 1 and Figure 2 A structure is shown in which the areas of the surfaces of the first display substrate 100 and the second display substrate 200 facing the third direction DR3 are identical to each other, however, the present disclosure should not be limited thereto or thereby.

[0081] Figure 3 is a schematic plan view of a first display substrate 100 according to an embodiment, and Figure 4 is an enlarged plan view of the display area DA according to an embodiment.

[0082] Reference Figure 3 , the first display substrate 100 may include signal lines SL1 to SLn and DL1 to DLm and pixels PX11 to PXnm. The signal lines SL1 to SLn and DL1 to DLm may include gate lines SL1 to SLn and data lines DL1 to DLm. Each of the pixels PX11 to PXnm may be connected to a corresponding gate line among the gate lines SL1 to SLn and a corresponding data line among the data lines DL1 to DLm.

[0083] Each of the pixels PX11 to PXnm may include a pixel driving circuit and a light emitting element. Depending on the configuration of the pixel driving circuit of the pixels PX11 to PXnm, more types of signal lines may be provided in the first display substrate 100.

[0084] The gate drive circuit GDC may be integrated into the first display substrate 100 using an oxide silicon gate driver circuit (OSG) process or an amorphous silicon gate driver circuit (ASG) process. The gate drive circuit GDC connected to the gate lines SL1 to SLn may be arranged on one side or one side of the non-display area NDA in the first direction DR1. The pads PD connected to the ends of the data lines DL1 to DLm may be arranged on one side or one side of the non-display area NDA in the second direction DR2.

[0085] Figure 4 is an enlarged plan view of the display area DA according to an embodiment.

[0086] Reference Figure 4 The unit pixels PXU may be arranged in a first direction DR1 and a second direction DR2. In an embodiment, the unit pixel PXU may include a first pixel region PXA-R, a second pixel region PXA-G, and a third pixel region PXA-B that emit light having different colors from each other. The first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B may emit red light, green light, and blue light, respectively.

[0087] The first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B may be opposite to the second display substrate 200 (refer to Figure 5A ). The peripheral area NPXA may be defined between the first pixel area PXA-R, the second pixel area PXA-G, and the third pixel area PXA-B. The peripheral area NPXA may define a boundary between the first pixel area PXA-R, the second pixel area PXA-G, and the third pixel area PXA-B, and may prevent color mixing between the first pixel area PXA-R, the second pixel area PXA-G, and the third pixel area PXA-B.

[0088] On the first display substrate 100 (refer to Figure 3 ) pixels PX11 to PXnm (refer to Figure 3 ) among the second display substrate 200 (refer to Figure 5A ) of the first pixel region PXA-R may be defined as a first pixel, and the second display substrate 200 (refer to Figure 5A ) of the second pixel region PXA-G may be defined as a second pixel and overlapped with the second display substrate 200 (refer to Figure 5A) may be defined as a third pixel. However, as described later, the first pixel, the second pixel, and the third pixel may have substantially the same configuration and may not be distinguished from each other. The first pixel, the second pixel, and the third pixel may not be distinguished from each other and may be defined as pixels overlapping the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B, respectively.

[0089] Each of the first pixel, the second pixel, and the third pixel may include a light emitting element OLED (referring to Figure 5A ), and the light emitting elements OLED of the first pixel, the second pixel and the third pixel (refer to Figure 5A ) can emit source light having the same color. However, the light emitting elements OLED of the first pixel, the second pixel and the third pixel (refer to Figure 5A ) may have the same size as each other or different sizes from each other.

[0090] The light emitting elements OLED (refer to Figure 5A ) may be converted into light having different colors while passing through the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B, and then may be emitted. The source light generated by the first display substrate 100 may be transmitted to the second display substrate 200 (refer to FIG. Figure 5A ) is converted into light having a color different from the color of the source light.

[0091] Reference Figure 4 , the first pixel region PXA-R and the third pixel region PXA-B may be arranged in the same row, and the second pixel region PXA-G may be arranged in a row different from the row in which the first pixel region PXA-R and the third pixel region PXA-B are arranged. The second pixel region PXA-G may have the largest size, and the third pixel region PXA-B may have the smallest size, however, the present disclosure should not be limited thereto or thereby. In an embodiment, each of the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B has a substantially square shape, however, the arrangement and size of the pixel regions should not be particularly limited.

[0092] Arranged in Figure 4The arrangement of the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B in the unit pixel PXU shown in FIG is an example, and the present disclosure should not be limited thereto or thereby. According to an embodiment, the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B may be arranged in the same row along the first direction DR1. As an example, the pixel regions PXA-R, PXA-G, and PXA-B may be arranged in a stripe arrangement, a pentile arrangement, or a plurality of other arrangements. Arrangement or diamond The arrangement of the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B may vary depending on the unit pixel PXU.

[0093] Figure 5A According to the implementation method Figure 4 Schematic cross-sectional view taken along line II'. Figure 5A Shown along Figure 4 1 is a cross-sectional view of a portion of the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B of the display device DD taken along line II′.

[0094] Reference Figure 5A , the first display substrate 100 may include a first base layer BS1, a circuit layer CL, a light emitting element layer EDL, an encapsulation layer TFE, a light-control layer CCL, and a second dam pattern DAM-F.

[0095] The first base layer BS1 may be disposed at a lowermost position of the first display substrate 100. The first base layer BS1 may provide a base surface on which components other than the first base layer BS1 included in the first display substrate 100 may be stacked on one another.

[0096] The first base layer BS1 may include a synthetic resin layer or a glass layer. The first base layer BS1 may include a first synthetic resin layer, a second synthetic resin layer, and an inorganic layer disposed between the first and second synthetic resin layers. The synthetic resin layer may include a thermosetting resin. For example, the synthetic resin layer may be a polyimide resin layer, however, it should not be limited to or restricted in this manner. The synthetic resin layer may include at least one of an acrylic resin, a methacrylic resin, a polyisoprene resin, a vinyl resin, an epoxy resin, a urethane resin, a cellulose resin, a siloxane resin, a polyamide resin, and a perylene resin.

[0097] The circuit layer CL may be disposed on the first base layer BS1. The circuit layer CL may include an insulating layer, a semiconductor pattern, a conductive pattern, and signal lines. The insulating layer, the semiconductor layer, and the conductive layer may be formed on the first base layer BS1 through coating or deposition processes. Accordingly, the insulating layer, the semiconductor layer, and the conductive layer may be selectively patterned through multiple photolithography processes. Accordingly, the semiconductor pattern, the conductive pattern, and the signal lines included in the circuit layer CL may be formed. The circuit layer CL may include transistors, a buffer layer, and an insulating layer.

[0098] The light emitting element layer EDL may be disposed on the circuit layer CL, and may include a light emitting element OLED and a pixel defining layer PDL.

[0099] The light-emitting element OLED may include a first electrode AE, a second electrode CE facing the first electrode AE, and an emission layer EML disposed between the first electrode AE and the second electrode CE. The light-emitting element OLED may overlap with the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B and may emit source light. The emission layer EML included in the light-emitting element OLED may include an organic light-emitting material or quantum dots as its light-emitting material. The light-emitting element OLED may also include a hole transport region HTR and / or an electron transport region ETR.

[0100] The pixel defining layer (PDL) may be disposed on the circuit layer CL and may cover a portion of the first electrode AE. A light emitting opening OH may be defined by the pixel defining layer (PDL) to overlap the first pixel region (PXA-R), the second pixel region (PXA-G), and the third pixel region (PXA-B). At least a portion of the first electrode AE may be exposed through a corresponding light emitting opening in the light emitting openings OH of the pixel defining layer (PDL).

[0101] The first light-emitting area EA1, the second light-emitting area EA2, and the third light-emitting area EA3 may be defined as portions corresponding to the first electrode AE exposed through the light-emitting opening OH of the pixel defining layer PDL. The area other than the first light-emitting area EA1, the second light-emitting area EA2, and the third light-emitting area EA3 may be defined as a non-light-emitting area. The expression "two components correspond to each other" may mean that the two components overlap when viewed in the third direction DR3 (i.e., the thickness direction of the display device DD), but should not be limited to having the same size as each other.

[0102] The first, second, and third light-emitting regions EA1, EA2, and EA3 may overlap with the first, second, and third pixel regions PXA-R, PXA-G, and PXA-B, respectively. When viewed in a planar manner, the first, second, and third pixel regions PXA-R, PXA-G, and PXA-B may be larger than the first, second, and third light-emitting regions EA1, EA2, and EA3, respectively. However, this is an example. The pixel regions PXA-R, PXA-G, and PXA-B may be substantially the same size as the light-emitting regions EA1, EA2, and EA3.

[0103] The first electrode AE may be disposed on the circuit layer CL. The first electrode AE may be an anode or a cathode. According to an embodiment, the first electrode AE may be a pixel electrode, or the first electrode AE may be a transmissive electrode, a transflective electrode, or a reflective electrode.

[0104] The hole transport region HTR may be disposed on the first electrode AE. The hole transport region HTR may be commonly disposed in the first emission region EA1, the second emission region EA2, and the third emission region EA3 as well as the non-emission region. A common layer such as the hole transport region HTR may be disposed with Figure 4 The plurality of unit pixels PXU in the display area DA shown in FIG2 overlap, however, it should not be limited thereto or thereby. According to an embodiment, the hole transport region HTR may be divided into a plurality of portions to correspond to the first light emitting area EA1, the second light emitting area EA2, and the third light emitting area EA3, respectively. The hole transport region HTR may include at least one of a hole transport layer, a hole injection layer, and an electron blocking layer.

[0105] The light-emitting layer EML may be arranged on the hole transport region HTR. The light-emitting layer EML may be commonly arranged in the first light-emitting region EA1, the second light-emitting region EA2, and the third light-emitting region EA3, as well as the non-light-emitting region. The light-emitting layer EML may be arranged to overlap (e.g., completely overlap) the hole transport region HTR and the electron transport region ETR, however, the present disclosure should not be limited thereto or thereby. According to an embodiment, the light-emitting layer EML may be arranged in the light-emitting opening OH. For example, the light-emitting layer EML may be divided into a plurality of portions to correspond to the first light-emitting region EA1, the second light-emitting region EA2, and the third light-emitting region EA3, respectively, which are distinguished from each other by the pixel defining layer PDL.

[0106] The light-emitting layer EML may generate source light. In the display device DD, the light-emitting layer EML may emit blue light, and therefore, the blue light may be the source light. When the light-emitting layer EML is divided into a plurality of portions to be arranged corresponding to the first light-emitting area EA1, the second light-emitting area EA2, and the third light-emitting area EA3, all of the first light-emitting area EA1, the second light-emitting area EA2, and the third light-emitting area EA3 of the light-emitting layer EML may emit blue light, or the first light-emitting area EA1, the second light-emitting area EA2, and the third light-emitting area EA3 may emit light in different wavelength ranges from each other.

[0107] The light-emitting layer (EML) may have a single-layer structure of a single material, a single-layer structure of multiple different materials, or a multi-layer structure of multiple layers formed of different materials. The light-emitting layer (EML) may include a fluorescent or phosphorescent material. Depending on the embodiment, the light-emitting layer (EML) of the light-emitting element (OLED) may include an organic light-emitting material, a metal-organic composite, or quantum dots as its light-emitting material.

[0108] The electron transport region ETR may be arranged on the light-emitting layer EML. The electron transport region ETR may include at least one of an electron injection layer, an electron transport layer, and a hole blocking layer. The electron transport region ETR may be arranged as a common layer to overlap (e.g., completely overlap) with the first light-emitting region EA1, the second light-emitting region EA2, and the third light-emitting region EA3 and the pixel defining layer PDL, however, the present disclosure should not be limited thereto or thereby. According to an embodiment, the electron transport region ETR may be divided into a plurality of parts, and the divided parts of the electron transport region ETR may be arranged to correspond to the first light-emitting region EA1, the second light-emitting region EA2, and the third light-emitting region EA3, respectively.

[0109] The second electrode CE may be disposed on the electron transport region ETR. The second electrode CE may be a common electrode. The second electrode CE may be a cathode or an anode, but should not be limited thereto or thereby. As an example, if the first electrode AE is an anode, the second electrode CE may be a cathode, and if the first electrode AE is a cathode, the second electrode CE may be an anode. The second electrode CE may be a transmissive electrode, a transflective electrode, or a reflective electrode.

[0110] The encapsulation layer TFE may be disposed on the light emitting element layer EDL and may cover the light emitting element OLED. The encapsulation layer TFE may be commonly disposed on a plurality of unit pixels PXU (refer to Figure 4 ). The encapsulation layer TFE may include a first inorganic layer INL1, an organic layer OL, and a second inorganic layer INL2, however, the present disclosure should not be limited thereto or thereby. The encapsulation layer TFE may further include an inorganic layer and an organic layer. The encapsulation layer TFE may prevent external moisture or oxygen from entering the light-emitting layer EML and may prevent the reliability of the display device DD from being deteriorated.

[0111] The first inorganic layer INL1 may be disposed on the second electrode CE and may cover the light emitting element OLED. The first inorganic layer INL1 may prevent external moisture or oxygen from entering the light emitting layer EML. The first inorganic layer INL1 may include silicon nitride, silicon oxide, or a compound thereof. The first inorganic layer INL1 may be formed by a deposition process.

[0112] The organic layer OL may be disposed on the first inorganic layer INL1. The organic layer OL may provide a flat surface on the first inorganic layer INL1. Uneven portions may be formed on the first inorganic layer INL1, or particles formed during the manufacturing process of the display device DD may remain on the first inorganic layer INL1. The organic layer OL may be disposed on the first inorganic layer INL1, and thus, the organic layer OL may prevent uneven portions or particles on the first inorganic layer INL1 from affecting components formed on the organic layer OL. Within the spirit and scope of the present disclosure, the organic layer OL may include an organic material and may be formed using a solution process such as a spin coating process, a slit coating process, an inkjet process, or the like.

[0113] During the process of forming the organic layer OL, since the solution containing the organic material has fluidity, an overflow phenomenon may occur in which the organic layer OL is formed outside the display area DA. In this case, the display device DD may further include a dam pattern that limits the fluidity of the solution containing the organic material, thereby preventing the occurrence of the overflow phenomenon.

[0114] The second inorganic layer INL2 may be arranged on the organic layer OL to cover the organic layer OL. The second inorganic layer INL2 may include silicon nitride, silicon oxide, or a combination thereof. Because the organic layer OL provides a flat surface, the second inorganic layer INL2 can be stably formed on a relatively flat surface, compared to a case where the second inorganic layer INL2 is arranged directly on the first inorganic layer INL1. The second inorganic layer INL2 may be formed through a deposition process. Between the formation of the organic layer OL and the formation of the second inorganic layer INL2, a hydrogen plasma treatment may be performed on the surface of the organic layer OL. When the hydrogen plasma treatment is performed on the surface of the organic layer OL, the second inorganic layer INL2 can be formed more uniformly on the organic layer OL.

[0115] The first dam pattern DAM-T may be arranged on the pixel defining layer PDL. The first dam pattern DAM-T may be arranged directly on the pixel defining layer PDL. The first dam pattern DAM-T may overlap with the peripheral area NPXA and may be arranged between the pixel defining layer PDL and the light-emitting element OLED (specifically, some layers of the light-emitting element OLED). The lower surface of the first dam pattern DAM-T may contact the pixel defining layer PDL. The upper surface and side surfaces of the first dam pattern DAM-T may be surrounded by the light-emitting element OLED (specifically, some layers of the light-emitting element OLED).

[0116] The shape of the first dam pattern DAM-T when viewed on a plane may vary as desired. As an example, the shape of the first dam pattern DAM-T when viewed on a plane may be discontinuous. As an example, the shape of the first dam pattern DAM-T when viewed on a plane may be continuous. Figure 4 The first dam pattern DAM-T may overlap the peripheral region NPXA, and portions of the first dam pattern DAM-T disposed between the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B may be disconnected.

[0117] The first dam pattern DAM-T may be provided in plural. The first dam pattern DAM-T may overlap with the peripheral area NPXA. However, the arrangement of the first dam pattern DAM-T should not be limited to Figure 5A As an example, the first dam pattern DAM-T may be arranged to overlap only a portion of the peripheral area NPXA, and the other portion of the peripheral area NPXA may not overlap with the first dam pattern DAM-T.

[0118] The first dam pattern DAM-T may have a multi-layer structure. The first dam pattern DAM-T may include at least one block.

[0119] The first dam opening OH-DAM1 may be defined by the first dam pattern DAM-T to overlap the light emitting opening OH. The first dam opening OH-DAM1 may include a 1-1st dam opening OH-DAM11 overlapping the first pixel region PXA-R, a 1-2nd dam opening OH-DAM12 overlapping the second pixel region PXA-G, and a 1-3rd dam opening OH-DAM13 overlapping the third pixel region PXA-B. An organic layer OL may be disposed in the first dam opening OH-DAM1. The organic layer OL may fill the first dam opening OH-DAM1 and may have a flat upper surface.

[0120] The first dam pattern DAM-T may have a transmittance lower than that of each of the encapsulation layer TFE, the light-emitting element OLED, and the pixel-defining layer PDL for the source light L1. Accordingly, the first dam pattern DAM-T may prevent the source light L1 generated by the light-emitting element OLED overlapping one of the pixel regions PXA-R, PXA-G, and PXA-B from propagating to other pixel regions adjacent to the one pixel region among the pixel regions PXA-R, PXA-G, and PXA-B.

[0121] The first dam pattern DAM-T may include a black colorant. The black colorant may include a black dye or a black pigment. Depending on the embodiment, the black colorant may include a metal material, a metal oxide material, or a non-metallic material such as carbon black, chromium, or an oxide thereof. However, the material used for the first dam pattern DAM-T is not limited thereto, and various materials having low transmittance for the source lights L1 and L2 may be used.

[0122] The first dam pattern DAM-T may have a width TH-DAM1 equal to or greater than about 15 μm. In the case where the width TH-DAM1 of the first dam pattern DAM-T is less than about 15 μm, the first dam pattern DAM-T may not prevent the source light L1 from propagating to the pixel regions PXA-R, PXA-G, and / or PXA-B adjacent thereto after passing through the first dam pattern DAM-T.

[0123] Figure 5A A structure is shown in which the width TH-DAM1 of the first dam pattern DAM-T is similar to the width of the bank BK. However, the width TH-DAM1 of the first dam pattern DAM-T may be different from the width of the bank BK. As an example, the width TH-DAM1 of the first dam pattern DAM-T may be smaller or larger than the width of the bank BK.

[0124] The first dam pattern DAM-T may prevent source light L1 generated by the light emitting element OLED overlapping the first pixel region PXA-R from propagating to the second pixel region PXA-G and the third pixel region PXA-B adjacent to the first pixel region PXA-R. The first dam pattern DAM-T having low transmittance for the source light L1 may be arranged in the peripheral region NPXA corresponding to the boundary between the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B.

[0125] For example, the first dam pattern DAM-T may function as a barrier. The barrier may block the path of source light L1 generated from one pixel region PXA-R through which it propagates to the pixel regions PXA-G and PXA-B adjacent to the one pixel region PXA-R, thereby preventing color mixing between adjacent pixels. This may also apply to source light generated by the light-emitting element OLED overlapping the second and third pixel regions PXA-G and PXA-B.

[0126] The light-controlling layer CCL may be disposed on the encapsulation layer TFE. The light-controlling layer CCL may include a bank BK, light-controlling patterns CCP-R, CCP-G, and CCP-B, and a first cover layer CP1.

[0127] The bank BK may be disposed on the first dam pattern DAM-T. The bank BK may be disposed on the second inorganic layer INL2. The bank BK may be provided with openings BK-OP defined therethrough. The openings BK-OP corresponding to the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B may be defined as a first opening BK-OP1, a second opening BK-OP2, and a third opening BK-OP3, respectively.

[0128] The bank BK may have a black pattern, for example, a black matrix. The bank BK may include a black colorant. The black colorant may include a black dye or a black pigment. Depending on the embodiment, the black colorant may include a metal material, a metal oxide material, or a non-metallic material such as carbon black, chromium, or an oxide thereof.

[0129] The first light control pattern CCP-R, the second light control pattern CCP-G, and the third light control pattern CCP-B may be arranged in the opening BK-OP, respectively. The first light control pattern CCP-R, the second light control pattern CCP-G, and the third light control pattern CCP-B may change the optical properties of the source light and may convert the source light into output light L3. In detail, the first light control pattern CCP-R and the second light control pattern CCP-G may absorb the source light and may generate output light L3 having a color different from the color of the source light. The third light control pattern CCP-B may transmit or scatter part of the source light incident thereon. Accordingly, the light emitted through the third light control pattern CCP-B may have a color substantially the same as the color of the source light. As described above, the third light control pattern CCP-B may have an optical function different from the optical functions of the first light control pattern CCP-R and the second light control pattern CCP-G.

[0130] Each of the first light control pattern CCP-R and the second light control pattern CCP-G may include a base resin and quantum dots mixed with the base resin (or dispersed in the base resin). In an embodiment, the first light control pattern CCP-R and the second light control pattern CCP-G may be defined as quantum dot patterns and may include different quantum dots. The base resin may be a medium in which quantum dots are dispersed, and may include various resin compositions commonly referred to as adhesives. However, it should not be limited to or restricted thereto. In the present disclosure, any medium in which quantum dots are dispersed may be used as a base resin, regardless of its name, additional functions, constituent materials, etc. The base resin may be a polymer resin. For example, the base resin may be an acrylic resin, a urethane resin, a silicone resin, or an epoxy resin. The base resin may be a transparent resin.

[0131] Quantum dots may be particles that change the wavelength of light incident thereon. Quantum dots are materials having a crystal structure of a few nanometers in size, containing hundreds to thousands of atoms, and exhibiting a quantum confinement effect that results in an increased energy band gap due to their small size. When light having a wavelength carrying energy higher than the band gap is incident on the quantum dot, the quantum dot absorbs the light and becomes excited, and the quantum dot emits light of a given wavelength and falls to the ground state. The emitted light of a given wavelength has an energy value corresponding to the band gap. The luminescent properties of quantum dots due to the quantum confinement effect can be controlled by adjusting the size and composition of the quantum dots. According to an embodiment, the diameter of the quantum dot may be in the range of about 1 nm to about 10 nm.

[0132] Quantum dots can be synthesized by wet chemical processes, metal organic chemical vapor deposition (MOCVD) processes, molecular beam epitaxy (MBE) processes or similar processes. The wet chemical process is a method for growing quantum dot particle crystals after mixing an organic solvent with a precursor material. In the case of crystal growth, the organic solvent can naturally serve as a dispersant that coordinates with the surface of the quantum dot crystal and can control the growth of the crystal. Accordingly, the wet chemical process can be easier than vapor deposition methods such as metal organic chemical vapor deposition (MOCVD) processes or molecular beam epitaxy (MBE), and the growth of quantum dot particles can be controlled by a low-cost process.

[0133] The quantum dots may include Group III-VI compounds, Group II-VI compounds, Group III-V compounds, Group I-III-VI compounds, Group IV-VI compounds, Group II-IV-V compounds, Group IV elements, Group IV compounds, or any combination thereof.

[0134] The III-VI compounds may include binary compounds such as GaS, Ga2S3, GaSe, Ga2Se3, GaTe, InS, InSe, In2Se3 and / or InTe, ternary compounds such as InGaS3 and / or InGaSe3, or any combination thereof.

[0135] The II-VI compounds may include binary compounds such as CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe and / or MgS, binary compounds such as CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnT The present invention also provides a ternary compound of CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe and / or MgZnS, a quaternary compound such as CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe and / or HgZnSTe, or any combination thereof. The II-VI compound may also include a Group I metal and / or a Group IV element. The I-II-VI compound may be selected from CuZnS, and the II-IV-VI compound may be selected from ZnSnS. The I-II-IV-VI compound may be selected from a quaternary compound selected from the group consisting of Cu2ZnSnS2, Cu2ZnSnS4, Cu2ZnSnSe4, Ag2ZnSnS2 and mixtures thereof.

[0136] The III-V compounds may include binary compounds such as GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, and / or InSb, ternary compounds such as GaNPs, GaNAs, GaNSb, GaPAs, GaPSb, AlNPs, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InNPs, InAlP, InNAs, InNSb, InPAs, and / or InPSb, quaternary compounds such as GaAlNPs, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNPs, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNPs, InAlNAs, InAlNSb, InAlPAs, and / or InAlPSb, or any combination thereof. The III-V compounds may also include Group II elements. For example, the Group III-V compound that may further include a Group II element may include InZnP, InGaZnP, InAlZnP, or the like.

[0137] Group I-III-VI compounds may include ternary compounds such as AgInS, AgInS2, AgInSe2, AgGaS, AgGaS2, AgGaSe2, CuInS, CuInS2, CuInSe2, CuGaS2, CuGaSe2, CuGaO2, AgGaO2 and / or AgAlO2, quaternary compounds such as AgInGaS2 and / or AgInGaSe2, or any combination thereof.

[0138] Group IV-VI compounds may include binary compounds such as SnS, SnSe, SnTe, PbS, PbSe and / or PbTe, ternary compounds such as SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe and / or SnPbTe, quaternary compounds such as SnPbSSe, SnPbSeTe and / or SnPbSTe, or any combination thereof.

[0139] The II-IV-V compound may include a ternary compound selected from the group consisting of ZnSnP, ZnSnP2, ZnSnAs2, ZnGeP2, ZnGeAs2, CdSnP2, CdGeP2, and mixtures thereof.

[0140] The Group IV element or Group IV compound may include a single element species such as Si or Ge, a binary compound such as SiC or SiGe, or any combination thereof.

[0141] Each element included in a multi-element compound such as a binary compound, a ternary compound, or a quaternary compound may be present in a uniform or non-uniform concentration in the particle. For example, the above chemical formula means the type of element included in the compound, and the ratio of elements in the compound may be variable. As an example, AgInGaS2 may mean AgInGaS2. x Ga 1-x S2 (x is a real number between 0 and 1).

[0142] The quantum dot may have a single structure in which the concentration of each element in the quantum dot is substantially uniform, or may have a core-shell dual structure. For example, the material included in the core and the material included in the shell may be different from each other.

[0143] The shell of a quantum dot can serve as a protective layer to prevent chemical modification of the core and to maintain semiconductor properties, and / or can serve as a charging layer to impart electrophoretic properties to the quantum dot. The shell can have a single-layer or multi-layer structure. The concentration of the element present in the shell can have a concentration gradient that decreases as the distance from the center decreases at the boundary between the core and the shell. In a core / shell structure, the concentration of the element present in the shell can have a concentration gradient that decreases as the distance from the core decreases.

[0144] The shell of the quantum dot may include a metal oxide, a non-metal oxide, a compound, or a combination thereof. The metal oxide or non-metal oxide may include a binary compound such as SiO2, Al2O3, TiO2, ZnO, MnO, Mn2O3, Mn3O4, CuO, FeO, Fe2O3, Fe3O4, CoO, Co3O4, and NiO, a ternary compound such as MgAl2O4, CoFe2O4, NiFe2O4, and CoMn2O4, or any combination thereof. The compound may include a III-VI compound, a II-VI compound, a III-V compound, a I-III-VI compound, a IV-VI compound, or any combination thereof. As examples, the compounds may include CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnTeS, GaAs, GaP, GaS, GaSe, AgGaS, AgGaS2, GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP, AlSb, or any combination thereof.

[0145] Each element included in a multi-element compound such as a binary compound or a ternary compound may be present in the particle at a uniform or non-uniform concentration. For example, the above chemical formula means the type of element included in the compound, and the ratio of the elements in the compound may be variable.

[0146] Quantum dots may have a full width at half maximum (FWHM) of the emission wavelength spectrum of about 45 nm or less (e.g., about 40 nm or less and about 30 nm or less). Color purity and color reproducibility can be improved within this range. Since light emitted by quantum dots can be emitted in all directions, the optical viewing angle can be improved.

[0147] Within the spirit and scope of the present disclosure, quantum dots may have the shape of spherical, pyramidal, multi-armed, or cubic nanoparticles, nanotubes, nanowires, nanofibers, nanosheets, or the like.

[0148] Since the band gap can be adjusted by controlling the size of the quantum dots or the ratio of elements in the compound used for the quantum dots, light with one or more suitable wavelengths can be obtained from the quantum dot light-emitting layer. Accordingly, when the above-mentioned quantum dots (for example, quantum dots having different sizes from each other or having compounds with different element ratios from each other) are used, a light-emitting element that emits light of one or more suitable wavelengths can be realized. In detail, the size of the quantum dots and the ratio of elements in the compound used for the quantum dots can be selected to emit red light, green light and / or blue light. The quantum dots can be configured to emit white light by having a combination of light of various colors.

[0149] According to an embodiment, the first light-controlling pattern CCP-R may be a red quantum dot pattern that absorbs source light and generates red light, and the second light-controlling pattern CCP-G may be a green quantum dot pattern that absorbs source light and generates green light. The first light-controlling pattern CCP-R and the second light-controlling pattern CCP-G may further include scattering particles.

[0150] The third light-controlling pattern CCP-B may include scattering particles mixed with (or dispersed in) the organic material. The third light-controlling pattern CCP-B may be a scattering pattern that scatters the source light. The scattering particles may be particles with a relatively high density or a given specific gravity. The scattering particles may include titanium oxide (TiO2) or silicon dioxide-based nanoparticles.

[0151] The first covering layer CP1 may be arranged on the embankment BK and the first light-controlling pattern CCP-R, the second light-controlling pattern CCP-G, and the third light-controlling pattern CCP-B. The first covering layer CP1 may be in contact with the first light-controlling pattern CCP-R, the second light-controlling pattern CCP-G, and the third light-controlling pattern CCP-B. The first covering layer CP1 may encapsulate the embankment BK and the first light-controlling pattern CCP-R, the second light-controlling pattern CCP-G, and the third light-controlling pattern CCP-B to prevent the embankment BK and the first light-controlling pattern CCP-R, the second light-controlling pattern CCP-G, and the third light-controlling pattern CCP-B from being damaged in subsequent processes. The first covering layer CP1 may have a single-layer or multi-layer structure. Within the spirit and scope of the present disclosure, the first covering layer CP1 may include silicon oxide, silicon nitride, silicon oxynitride, or the like.

[0152] The second dam pattern DAM-F may be disposed on the bank BK and may overlap the peripheral area NPXA. The second dam pattern DAM-F may be disposed directly on the first cover layer CP1. The second dam pattern DAM-F may be disposed between the color filters CF-R, CF-G, and CF-B and the bank BK.

[0153] The second dam opening OH-DAM2 may be defined by the second dam pattern DAM-F to overlap the first dam opening OH-DAM1. The second dam opening OH-DAM2 may include a 2-1st dam opening OH-DAM21 overlapping the first pixel region PXA-R and the 1-1st dam opening OH-DAM11, a 2-2nd dam opening OH-DAM22 overlapping the second pixel region PXA-G and the 1-2nd dam opening OH-DAM12, and a 2-3rd dam opening OH-DAM23 overlapping the third pixel region PXA-B and the 1-3rd dam opening OH-DAM13. The second dam opening OH-DAM2 may be filled with a filling material FML. The filling material FML may include an epoxy-based organic material.

[0154] The second dam pattern DAM-F may have a lower transmittance than the filler material FML for the source light L2 and the output light L3. Accordingly, the second dam pattern DAM-F may prevent the source light L2 generated by the light-emitting element OLED adjacent to (e.g., overlapping) one of the pixel regions PXA-R, PXA-G, and PXA-B from propagating to other pixel regions adjacent to the one of the pixel regions PXA-R, PXA-G, and PXA-B. The second dam pattern DAM-F may prevent the output light L3 converted by the light-control patterns CCP-R, CCP-G, and CCP-B, respectively overlapping the pixel regions PXA-R, PXA-G, and PXA-B, from propagating to the adjacent pixel regions PXA-R, PXA-G, and / or PXA-B.

[0155] The second dam pattern DAM-F may include a black colorant. The black colorant may include a black dye or a black pigment. Depending on the embodiment, the black colorant may include a metal material, a metal oxide material, or a non-metallic material such as carbon black, chromium, or an oxide thereof. However, the material used for the second dam pattern DAM-F is not limited thereto, and various materials having low transmittance for the source light L2 and the output light L3 may be used.

[0156] The second dam pattern DAM-F may have a width TH-DAM2 equal to or greater than about 15 μm. In the case where the width TH-DAM2 of the second dam pattern DAM-F is less than about 15 μm, the second dam pattern DAM-F may not prevent the source light L2 and the output light L3 from propagating to the pixel regions PXA-R, PXA-G, and / or PXA-B adjacent thereto after passing through the second dam pattern DAM-F.

[0157] The second dam pattern DAM-F can function as a barrier. The barrier can block the path of source light L2 and output light L3 generated from one pixel region PXA-R through which they propagate to the pixel regions PXA-G and PXA-B adjacent to the one pixel region PXA-R, thereby preventing color mixing between adjacent pixels. This applies to source light generated by the light-emitting element OLED overlapping the second and third pixel regions PXA-G and PXA-B, and output light L3 converted by the light-control patterns CCP-R, CCP-G, and CCP-B.

[0158] The second dam pattern DAM-F may have a multi-layer structure. The second dam pattern DAM-F may include at least one block. The second dam pattern DAM-F may have a shape in which one or more blocks may be stacked on each other.

[0159] The second capping layer CP2 may be disposed on the second dam pattern DAM-F and the first capping layer CP1. The second capping layer CP2 may encapsulate the second dam pattern DAM-F to prevent the second dam pattern DAM-F from being damaged in subsequent processes.

[0160] The second display substrate 200 may include a second base layer BS2 , a color filter layer CFL, a low refractive index layer LR, and a third cover layer CP3 .

[0161] The second display substrate 200 may be disposed above the first display substrate 100 and may be spaced apart from the first display substrate 100. The cell gap GP (refer to Figure 2 ) may be a space between the first display substrate 100 and the second display substrate 200 spaced apart from the first display substrate 100. The cell gap GP (refer to Figure 2 ) may remain as an empty space or may be filled with a gas. The cell gap GP may be filled with a filling material FML.

[0162] The second base layer BS2 may provide a base surface on which the color filter layer CFL is disposed. The second base layer BS2 may include a synthetic resin layer or a glass layer. The synthetic resin layer may include a thermosetting resin. The synthetic resin layer may be a polyimide resin layer, however, it should not be limited to or restricted in this manner. The synthetic resin layer may include at least one of an acrylic resin, a methacrylic resin, a polyisoprene resin, a vinyl resin, an epoxy resin, a urethane resin, a cellulose resin, a siloxane resin, a polyamide resin, and a perylene resin. The second base layer BS2 may include a glass substrate, a metal substrate, or an organic / inorganic composite substrate.

[0163] A color filter layer CFL may be disposed on the lower surface of the second base layer BS2. The color filter layer CFL may include color filters CF-R, CF-G, and CF-B. The color filters CF-R, CF-G, and CF-B may include a first color filter CF-R, a second color filter CF-G, and a third color filter CF-B that overlap with the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B, respectively. The first color filter CF-R may transmit a first color light. The second color filter CF-G may transmit a second color light. The third color filter CF-B may transmit a third color light.

[0164] In an embodiment, one of the first color light and the second color light may be red light, the other of the first color light and the second color light may be green light, and the third color light may be blue light. The first color light, the second color light, and the third color light may be red light, green light, and blue light, respectively. The first color filter CF-R, the second color filter CF-G, and the third color filter CF-B may be a red filter, a green filter, and a blue filter, respectively.

[0165] The first pixel region PXA-R, the second pixel region PXA-G, the third pixel region PXA-B, and the peripheral region NPXA may be defined by the first color filter CF-R, the second color filter CF-G, and the third color filter CF-B. The peripheral region NPXA may be defined as a region where two or more of the first color filter CF-R, the second color filter CF-G, and the third color filter CF-B overlap with each other. The first pixel region PXA-R may overlap only with the first color filter CF-R, the second pixel region PXA-G may overlap only with the second color filter CF-G, and the third pixel region PXA-B may overlap only with the third color filter CF-B.

[0166] When two or more color filters overlap each other, the effect of blocking external light can be increased, and interference or color mixing of colors between pixels can be prevented. Therefore, a structure in which two or more color filters overlap each other may correspond to a light-blocking structure.

[0167] The color filter opening may be defined by the second color filter CF-G and the third color filter CF-B to correspond to the first pixel region PXA-R. Similarly, the color filter opening may be defined by the first color filter CF-R and the third color filter CF-B to correspond to the second pixel region PXA-G, and the color filter opening may be defined by the first color filter CF-R and the second color filter CF-G to correspond to the third pixel region PXA-B. The thickness of the corresponding color filter (e.g., the first color filter CF-R or the second color filter CF-G) in the color filter opening may be a thickness TH-CF (e.g., referring to Figure 5F ).

[0168] The low refractive index layer LR may be arranged below or under the color filter layer CFL. The low refractive index layer LR may be arranged on the light control layer CCL. The low refractive index layer LR may be arranged between the color filter layer CFL and the filler material FML. The low refractive index layer LR may be arranged between the light control layer CCL and the color filter layer CFL to serve as an optical functional layer that improves light extraction efficiency or prevents reflected light from entering the light control layer CCL. The low refractive index layer LR may have a refractive index smaller than the refractive index of the layer adjacent thereto. As an example, the low refractive index layer LR may have a refractive index equal to or greater than approximately 1.0 and equal to or less than approximately 1.5.

[0169] The second display substrate 200 may further include a third cover layer CP3. The third cover layer CP3 may be arranged on the lower surface of the low refractive index layer LR. The low refractive index layer LR may be omitted from the second display substrate 200. In this case, the third cover layer CP3 may be in direct contact with the first color filter CF-R, the second color filter CF-G, and the third color filter CF-B. The third cover layer CP3 may serve as a protective layer that covers the color filters CF-R, CF-G, and CF-B and prevents the color filters CF-R, CF-G, and CF-B from being damaged during the manufacturing process of the display device DD. The third cover layer CP3 may be omitted from the second display substrate 200.

[0170] The second display substrate 200 may further include a step compensation layer. The step compensation layer may be arranged between the non-display area NDA (eg, Figure 3 ) on the lower surface of the overlapping third cover layer CP3. The step difference compensation layer can compensate for the step difference that occurs in the second display substrate 200 during the process of forming the first color filter CF-R, the second color filter CF-G and the third color filter CF-B and the third cover layer CP3. Accordingly, the sealing member SLM (refer to Figure 2 ) can be arranged on a flat surface provided by the step compensation layer (specifically, the sealing member SLM can be arranged on a flat lower surface provided by the step compensation layer), and therefore, the second display substrate 200 and the first display substrate 100 can be bonded to each other by a vacuum pressure process.

[0171] Figure 5A The components of the first display substrate 100 shown in the figure may be formed in the order of a first base layer BS1, a circuit layer CL, a pixel defining layer PDL (specifically, a first electrode AE and a pixel defining layer PDL), a first dam pattern DAM-T, a light-emitting element OLED (specifically, some layers of the light-emitting element OLED), an encapsulation layer TFE, a bank BK, light-control patterns CCP-R, CCP-G, and CCP-B, a first cover layer CP1, a second dam pattern DAM-F, and a second cover layer CP2. The components of the second display substrate 200 may be formed in the order of a second base layer BS2, a color filter layer CFL, a low refractive index layer LR, and a third cover layer CP3. The first display substrate 100 and the second display substrate 200 may be bonded to each other by a vacuum pressure process.

[0172] Figure 5B According to the implementation method Figure 4 A schematic cross-sectional view taken along line II' of FIG. Figure 5B In the Figure 5A , and therefore, detailed description of the same elements may be omitted.

[0173] Reference Figure 5BThe light-emitting element OLED (specifically, some layers of the light-emitting element OLED) may be formed on the pixel defining layer PDL. The first dam pattern DAM-T may be arranged on the pixel defining layer PDL. The first dam pattern DAM-T may be arranged above the light-emitting element OLED. The first dam pattern DAM-T may be arranged directly on the first inorganic layer INL1. The first dam pattern DAM-T may be arranged between the first inorganic layer INL1 and the organic layer OL.

[0174] The first dam pattern DAM-T may be arranged close to the bank BK. In this case, the first dam pattern DAM-T may effectively prevent source light generated from one of the pixel regions PXA-R, PXA-G, and PXA-B from propagating to other pixel regions adjacent to the one pixel region among the pixel regions PXA-R, PXA-G, and PXA-B. As an example, the source light L1 generated from the first pixel region PXA-R (refer to FIG. 1 ) may be prevented from propagating to the other pixel regions PXA-R, PXA-G, and PXA-B. Figure 5A ) is propagated to the second light-controlling pattern CCP-G which is adjacent to the first pixel region PXA-R.

[0175] The components of the first display substrate 100 may be formed in the order of a first base layer BS1, a circuit layer CL, a pixel defining layer PDL (specifically, a first electrode AE and a pixel defining layer PDL), a light-emitting element OLED (specifically, some layers of the light-emitting element OLED), a first inorganic layer INL1, a first dam pattern DAM-T, an organic layer OL, a second inorganic layer INL2, a bank BK, light-control patterns CCP-R, CCP-G, and CCP-B, a first cover layer CP1, a second dam pattern DAM-F, and a second cover layer CP2. The components of the second display substrate 200 may be formed in the order of a second base layer BS2, a color filter layer CFL, a low refractive index layer LR, and a third cover layer CP3. The first display substrate 100 and the second display substrate 200 may be bonded to each other through a vacuum pressure process.

[0176] Figure 5C According to the implementation method Figure 4 A schematic cross-sectional view taken along line II' of FIG. Figure 5C In the Figure 5A and Figure 5B , and therefore, detailed description of the same elements may be omitted.

[0177] Reference Figure 5CThe first cover layer CP1 may cover the bank BK. The second dam pattern DAM-F may be arranged directly on the first cover layer CP1 and may overlap the peripheral area NPXA. The light-control patterns CCP-R, CCP-G, and CCP-B may be arranged directly on the first cover layer CP1 and may overlap the pixel areas PXA-R, PXA-G, and PXA-B. The second cover layer CP2 may be arranged on the light-control patterns CCP-R, CCP-G, and CCP-B and the second dam pattern DAM-F and may cover the light-control patterns CCP-R, CCP-G, and CCP-B and the second dam pattern DAM-F. The second cover layer CP2 may prevent the light-control patterns CCP-R, CCP-G, and CCP-B and the second dam pattern DAM-F from being damaged in subsequent processes.

[0178] The components of the first display substrate 100 may be formed in the order of a first base layer BS1, a circuit layer CL, a pixel defining layer PDL (specifically, a first electrode AE and a pixel defining layer PDL), a light-emitting element OLED (specifically, some layers of the light-emitting element OLED), a first inorganic layer INL1, a first dam pattern DAM-T, an organic layer OL, a second inorganic layer INL2, a bank BK, a first cover layer CP1, a second dam pattern DAM-F, light-control patterns CCP-R, CCP-G, and CCP-B, and a second cover layer CP2. The components of the second display substrate 200 may be formed in the order of a second base layer BS2, a color filter layer CFL, a low refractive index layer LR, and a third cover layer CP3. The first display substrate 100 and the second display substrate 200 may be bonded to each other through a vacuum pressure process.

[0179] Figure 5D According to the implementation method Figure 4 A schematic cross-sectional view taken along line II' of FIG. Figure 5D In the Figure 5A and Figure 5B , and therefore, detailed description of the same elements may be omitted.

[0180] Reference Figure 5D , the second display substrate 200 may include a second dam pattern DAM-F. Figure 5A and Figure 5B The second dam pattern DAM-F is different, Figure 5D The second dam pattern DAM-F may be formed together with the second display substrate 200. The second display substrate 200 may include a second base layer BS2, a color filter layer CFL, a low refractive index layer LR, a second dam pattern DAM-F, a second cover layer CP2, and a third cover layer CP3. The third cover layer CP3 may be disposed on a lower surface of the low refractive index layer LR.

[0181] The second dam pattern DAM-F may overlap the peripheral area NPXA and may be directly disposed on the third cover layer CP3. The second dam pattern DAM-F may be encapsulated by the second cover layer CP2 and the third cover layer CP3. The second cover layer CP2 and the third cover layer CP3 may prevent the second dam pattern DAM-F from being damaged in subsequent processes.

[0182] Figure 5D The components of the first display substrate 100 may be formed in the order of a first base layer BS1, a circuit layer CL, a pixel defining layer PDL (specifically, a first electrode AE and a pixel defining layer PDL), a light-emitting element OLED (specifically, some layers of the light-emitting element OLED), a first inorganic layer INL1, a first dam pattern DAM-T, an organic layer OL, a second inorganic layer INL2, a bank BK, light-control patterns CCP-R, CCP-G, and CCP-B, and a first cover layer CP1. The components of the second display substrate 200 may be formed in the order of a second base layer BS2, a color filter layer CFL, a low refractive index layer LR, a second cover layer CP2, a second dam pattern DAM-F, and a third cover layer CP3. The first display substrate 100 and the second display substrate 200 may be bonded to each other through a vacuum pressure process.

[0183] Figure 5E According to the implementation method Figure 4 A schematic cross-sectional view taken along line II' of FIG. Figure 5E In the Figure 5A and Figure 5B , and therefore, detailed description of the same elements may be omitted.

[0184] Reference Figure 5E , the second display substrate 200 may include a second dam pattern DAM-F. Figure 5A and Figure 5B The second dam pattern DAM-F is different, Figure 5E The second dam pattern DAM-F may be formed together with the second display substrate 200. The second display substrate 200 may include a second base layer BS2, a color filter layer CFL, a low refractive index layer LR, a second dam pattern DAM-F, and a second cover layer CP2.

[0185] The second dam pattern DAM-F may overlap with the peripheral area NPXA and may be directly arranged on the color filter layer CFL (specifically, the lower surface of the color filter layer CFL). The low refractive index layer LR may be arranged on the second dam pattern DAM-F and the color filter layer CFL (specifically, the second dam pattern DAM-F and the lower surface of the color filter layer CFL). The low refractive index layer LR may cover the color filter layer CFL and the second dam pattern DAM-F. The second cover layer CP2 may be arranged on the low refractive index layer LR (specifically, the lower surface of the low refractive index layer LR) and may cover the low refractive index layer LR. The second cover layer CP2 may prevent the low refractive index layer LR from being damaged in subsequent processes.

[0186] Figure 5E The components of the first display substrate 100 may be formed in the order of a first base layer BS1, a circuit layer CL, a pixel defining layer PDL (specifically, a first electrode AE and a pixel defining layer PDL), a light-emitting element OLED (specifically, some layers of the light-emitting element OLED), a first inorganic layer INL1, a first dam pattern DAM-T, an organic layer OL, a second inorganic layer INL2, a bank BK, light-control patterns CCP-R, CCP-G, and CCP-B, and a first cover layer CP1. The components of the second display substrate 200 may be formed in the order of a second base layer BS2, a color filter layer CFL, a second dam pattern DAM-F, a low refractive index layer LR, and a second cover layer CP2. The first display substrate 100 and the second display substrate 200 may be bonded to each other through a vacuum pressure process.

[0187] Figure 5F According to the implementation method Figure 4 In addition to the shape and arrangement of the encapsulation layer TFE and the first dam pattern DAM-T, Figure 5F The display device DD shown in FIG may have Figure 5B The structure and functions of the display device DD are substantially the same as those of FIG. 1 , and therefore, details of the same structure and functions may be omitted.

[0188] Reference Figure 5F , the groove GR-OL may be defined in the organic layer OL to overlap with the peripheral area NPXA. A first dam pattern DAM-T may be formed in the groove GR-OL. The first dam pattern DAM-T may be arranged between the first inorganic layer INL1 and the second inorganic layer INL2. The upper surface of the first dam pattern DAM-T may be in contact with the second inorganic layer INL2. For example, Figures 5A to 5E Unlike the display device DD, the organic layer OL may not be provided on the upper surface of the first dam pattern DAM-T.

[0189] Accordingly, the first dam pattern DAM-T may be disposed adjacent to the bank BK and may prevent source light generated from one pixel region among the pixel regions PXA-R, PXA-G, and PXA-B (refer to FIG. 1 ). Figure 5A As an example, the first dam pattern DAM-T may prevent the source light L1 generated from the light emitting element OLED overlapping the first pixel region PXA-R from being transmitted to other pixel regions adjacent to the one pixel region among the pixel regions PXA-R, PXA-G, and PXA-B. Figure 5A The source light L1) is transmitted to the second light-controlling pattern CCP-G overlapping the second pixel area PXA-G. Therefore, color mixing between adjacent pixels can be prevented.

[0190] A separate process of forming a groove GR-OL corresponding to the first dam pattern DAM-T in the organic layer OL may be further performed to manufacture Figure 5F The display device DD shown in .

[0191] Figure 6A is a graph showing the relationship between wavelength and spectrum intensity measured in the first pixel region according to a comparative example and an embodiment. Figure 6B is a graph showing the relationship between wavelength and spectrum intensity measured in the second pixel area according to the comparative example and the embodiment. Figure 6C is a graph showing the relationship between wavelength and spectrum intensity measured in the third pixel area according to the comparative example and the embodiment.

[0192] exist Figures 6A to 6C In the figure, curve 1 shows the relationship between the spectrum intensity and the wavelength in the display device without the first dam pattern DAM-T and the second dam pattern DAM-F according to the comparative example. Curve 2 shows the relationship between the spectrum intensity and the wavelength in the display device without the first dam pattern DAM-T and the second dam pattern DAM-F according to the embodiment. Figure 5A FIG. 1 shows a relationship between spectrum intensity and wavelength in a display device DD that may include a first dam pattern DAM-T and a second dam pattern DAM-F.

[0193] Reference Figure 6A , the first pixel region PXA-R (for example, referring to Figure 5A ) may be a region from which red light (or first color light) is emitted. Hereinafter, a region with a wavelength of about 650 nm may be a red light region, a region with a wavelength of about 540 nm may be a green light region, and a region with a wavelength of about 450 nm may be a blue light region.

[0194] The peak values in the green and blue light regions of the comparative example (curve 1) may be greater than those in the green and blue light regions of the embodiment (curve 2). This means that the amount of green and blue light mixed with red light is greater in the comparative example (curve 1) than in the embodiment (curve 2).

[0195] Reference Figure 6B , the second pixel area PXA-G (for example, refer to Figure 5A ) may be an area from which green light (or second color light) is emitted.

[0196] The peak values in the red and blue light regions of the comparative example (curve 1) may be greater than those in the red and blue light regions of the embodiment (curve 2). This means that the amount of red and blue light mixed with green light is greater in the comparative example (curve 1) than in the embodiment (curve 2).

[0197] Reference Figure 6C , the third pixel area PXA-B (for example, refer to Figure 5A ) may be an area from which blue light (or third color light) is emitted.

[0198] The peak values in the red and green light regions of the comparative example (curve 1) may be greater than those in the red and green light regions of the embodiment (curve 2). This means that the amount of green and red light mixed with the blue light is greater in the comparative example (curve 1) than in the embodiment (curve 2).

[0199] Reference Figures 6A to 6C , it can be seen that the first dam pattern DAM-T (refer to Figure 5A ) and the second dam pattern DAM-F (refer to Figure 5A ) is effective in preventing color mixing between adjacent pixels.

[0200] The light efficiency and DCI color gamut of each color light according to the comparative example and the embodiment are shown in Table 1 below.

[0201] Table 1

[0202]

[0203] In Table 1, the light efficiency of the embodiment may be a ratio of the brightness of light in the embodiment to the brightness of light in the comparative example. The color gamut is a value indicating how close the color displayed by the display device is to the actual color based on the DCI-P3 standard. Figure 6D is a graph showing light efficiency and color gamut according to a comparative example (Ref) and an embodiment (TFF / Filler_DAM). Figure 6D A portion of the content of Table 1 is shown graphically. Figure 6D Curve 1 shows the light efficiency of white light in the comparative example and the embodiment. Figure 6D Curve 2 shows the color gamuts of the comparative example and the embodiment.

[0204] Refer to Table 1 and Figure 6DIn the embodiment, it is seen that the light efficiencies of red light, green light, blue light, and white light are about 97.7%, about 99.3%, about 90.4%, and about 98.6%, respectively, which are lower than the light efficiency of about 100% of the comparative example.

[0205] As shown in Table 1 and Figure 6D As shown in FIG, the color gamut of the comparative example is about 99.12%, and the color gamut of the embodiment is about 99.84%. Compared with the comparative example, the color gamut in the embodiment increases by about 0.72%. This means that the display device according to the embodiment shows more accurate colors. For example, the first dam pattern DAM-T of the embodiment (refer to FIG. Figure 5A ) and the second dam pattern DAM-F (refer to Figure 5A ) prevents color mixing between pixels adjacent to each other and, therefore, improves the color gamut.

[0206] Figure 7 According to the implementation method Figure 4 A schematic cross-sectional view taken along line II' of FIG. Figure 7 In the Figure 5A , and therefore, detailed description of the same elements may be omitted.

[0207] Reference Figure 7 The display device DD may further include a reflective pattern MSP arranged on the inner surface of the first dam pattern DAM-T. The reflective pattern MSP may reflect a portion of the source light L1 propagating toward the first dam pattern DAM-T. The reflective pattern MSP and the first dam pattern DAM-T may prevent the source light L1 from propagating to the pixel regions PXA-R, PXA-G, and / or PXA-B adjacent thereto. For example, the width TH-DAM1 of the first dam pattern DAM-T (refer to FIG. 1 ) may be greater than or equal to 0. Figure 5A ) is less than about 15 μm and the first dam pattern DAM-T does not completely block the propagation of the source light L1, the reflective pattern MSP can reflect the source light L1 propagating toward the adjacent pixel areas PXA-R, PXA-G and / or PXA-B and prevent color mixing between pixel areas adjacent to each other.

[0208] Figure 8 According to the implementation method Figure 4 A schematic cross-sectional view taken along line II' of FIG. Figure 8 In the Figure 5A , and therefore, detailed description of the same elements may be omitted.

[0209] Reference Figure 8, the second display substrate 200 may further include a blocking color filter CF-Y. The blocking color filter CF-Y may be arranged on the color filter layer CFL (specifically, the blocking color filter CF-Y may be arranged on the lower surface of the color filter layer CFL or the blocking color filter CF-Y may be arranged below the color filter layer CFL). The blocking color filter CF-Y may overlap with the first pixel region PXA-R and the second pixel region PXA-G, and may not overlap with the third pixel region PXA-B. The blocking color filter CF-Y may be arranged on the first color filter CF-R and the second color filter CF-G (specifically, the blocking color filter CF-Y may be arranged on the lower surface of the first color filter CF-R and the second color filter CF-G or the blocking color filter CF-Y may be arranged below the first color filter CF-R and the second color filter CF-G). The blocking color filter CF-Y may not transmit blue light (or third color light) and may transmit red light (or first color light) and green light (or second color light).

[0210] The blocking color filter CF-Y can prevent blue, which is the color of the source light, from being displayed in the first pixel region PXA-R or the second pixel region PXA-G displaying red or green. The blocking color filter CF-Y can prevent blue light from propagating through the first pixel region PXA-R displaying red light and the second pixel region PXA-G displaying green light.

[0211] The blocking color filter CF-Y may have a transmittance of approximately 90% or more (hereinafter referred to as a first transmittance) for red light (or first color light) and green light (or second color light). If the first transmittance of the blocking color filter CF-Y is less than approximately 90%, not only blue light (or third color light) may be blocked by the blocking color filter CF-Y, but also red light displayed by the first pixel region PXA-R and green light displayed by the second pixel region PXA-G may be blocked by the blocking color filter CF-Y. This may reduce the brightness in the first pixel region PXA-R and the second pixel region PXA-G.

[0212] The blocking color filter CF-Y has an extinction coefficient for blue light that is equal to or greater than approximately 0.005 and equal to or less than approximately 0.5. When the extinction coefficient of the blocking color filter CF-Y for blue light increases, the blocking color filter CF-Y may absorb blue light and may block the blue light from propagating outward. When the extinction coefficient of the blocking color filter CF-Y for blue light is less than approximately 0.005, the blocking color filter CF-Y may not sufficiently absorb blue light and therefore may not block blue light. When the extinction coefficient of the blocking color filter CF-Y for blue light is greater than approximately 0.5, the blocking color filter CF-Y may sufficiently absorb blue light to block blue light. However, considering the material used for the blocking color filter CF-Y, it is difficult to achieve an extinction coefficient of the blocking color filter CF-Y greater than approximately 0.5.

[0213] Figure 9 According to the implementation method Figure 4 Schematic cross-sectional view taken along line II'. Figure 9 The display device DD does not include Figure 5A In addition to the low refractive index layer LR, Figure 9 The display device DD can be used with Figure 5A The display device DD is basically the same. Figure 9 In the Figure 5A , and therefore, detailed description of the same elements may be omitted.

[0214] Reference Figure 9 , the first cover layer CP1 may have a refractive index equal to or greater than about 1.0 and equal to or less than about 1.5. The refractive index of the first cover layer CP1 may be the same as that of the reference Figure 5A The refractive index of the low refractive index layer LR described above is substantially the same. Accordingly, the first cover layer CP1 may replace the low refractive index layer LR (refer to Figure 5A ) function. For example, the first cover layer CP1 may be arranged between the light control layer CCL (specifically, the bank BK and the light control patterns CCP-R, CCP-G, and CCP-B) and the color filter layer CFL, and may serve as an optical functional layer that improves light extraction efficiency or prevents reflected light from entering the light control layer CCL (for example, the light control patterns CCP-R, CCP-G, and CCP-B). The refractive index of the first cover layer CP1 may be lower than the refractive index of the layer adjacent thereto.

[0215] The filling material FML may have a refractive index equal to or greater than about 1.0 and equal to or less than about 1.5. The refractive index of the filling material FML may be the same as that of the reference material. Figure 5A The low refractive index layer LR described (refer to Figure 5A ) are substantially the same. Accordingly, the filling material FML can replace the low refractive index layer LR (refer to Figure 5A ) function.

[0216] Figure 10 is a graph showing the relationship between light transmittance (which may be simply referred to as transmittance) and wavelength of a blocking color filter according to an embodiment.

[0217] Reference Figure 10 , curve a shows the blocking filter CF-Y (eg, referring to Figure 8) and wavelength. The light transmittance of the blocking color filter CF-Y is approximately 0% in a blue light region having a wavelength of approximately 450 nm. The light transmittance of the blocking color filter CF-Y is approximately 94% in a green light region having a wavelength of approximately 540 nm. The light transmittance of the blocking color filter CF-Y is approximately 98% in a red light region having a wavelength of approximately 650 nm. As described above, the blocking color filter CF-Y can block only blue light but can transmit red and green light.

[0218] Figure 11A is a graph showing the relationship between the transmittance of a blocking color filter with respect to blue light and the thickness of the blocking color filter according to an embodiment. Figure 11A is shown in the first pixel area PXA-R (for example, referring to Figure 8 ) measured in the blocking filter CF-Y (for example, referring to Figure 8 ) is a graph showing the relationship between the transmittance of blue light and the thickness of the blocking filter CF-Y.

[0219] exist Figure 11A , Curve 1 shows the relationship between the transmittance and thickness of the blocking filter CF-Y when the extinction coefficient of the blocking filter CF-Y is approximately 0.005. Curve 2 shows the relationship between the transmittance and thickness of the blocking filter CF-Y when the extinction coefficient of the blocking filter CF-Y is approximately 0.02. Curve 3 shows the relationship between the transmittance and thickness of the blocking filter CF-Y when the extinction coefficient of the blocking filter CF-Y is approximately 0.03. Curve 4 shows the relationship between the transmittance and thickness of the blocking filter CF-Y when the extinction coefficient of the blocking filter CF-Y is approximately 0.5.

[0220] Reference Figure 11A , it can be seen that, at the same thickness, the transmittance of the blocking color filter CF-Y for blue light decreases as the extinction coefficient of the blocking color filter CF-Y increases. When the extinction coefficient of the blocking color filter CF-Y is about 0.005 (curve 1), the transmittance of the blocking color filter CF-Y for blue light may be about 50%. When the extinction coefficient of the blocking color filter CF-Y is less than about 0.005, the transmittance of the blocking color filter CF-Y for blue light may be greater than about 50%. As a result, the blocking color filter CF-Y may not adequately block blue light.

[0221] In the case where the thickness of the blocking filter CF-Y is not close to zero (0) and the extinction coefficient of the blocking filter CF-Y is about 0.5 (curve Figure 4), the transmittance of the blocking color filter CF-Y for blue light may be approximately 0%. Therefore, even if the extinction coefficient of the blocking color filter CF-Y is greater than approximately 0.5, the blue light blocking effect of the blocking color filter CF-Y may not be affected when compared to a case where the extinction coefficient is approximately 0.5. Therefore, the extinction coefficient of the blocking color filter CF-Y may be equal to or greater than approximately 0.005 and equal to or less than approximately 0.5.

[0222] Figure 11B : is a graph showing the relationship between the transmittance of the blocking color filter and the wavelength when the thickness of the blocking color filter is varied according to an embodiment. Figure 11B is shown in the second pixel area PXA-G (for example, refer to Figure 8 ) measured in the blocking filter CF-Y (for example, referring to Figure 8 ) is a graph showing the relationship between the transmittance and the wavelength of light.

[0223] exist Figure 11B In FIG, Curve 1 shows the relationship between the transmittance of the blocking color filter CF-Y and the wavelength of light when the thickness of the blocking color filter CF-Y is approximately 4 μm. Curve 2 shows the relationship between the transmittance of the blocking color filter CF-Y and the wavelength of light when the thickness of the blocking color filter CF-Y is approximately 4.5 μm. Curve 3 shows the relationship between the transmittance of the blocking color filter CF-Y and the wavelength of light when the thickness of the blocking color filter CF-Y is approximately 5 μm.

[0224] Reference Figure 11B , when the wavelength at the main peak of green light (or second color light) is about 530nm, the transmittances shown in curves 1, 2, and 3 may be about 91%, about 90%, and about 89%, respectively. The transmittance of the blocking filter CF-Y at a wavelength of about 530nm needs to be about 90% or higher to prevent the blocking filter CF-Y from blocking not only blue light but also green light, and thus prevent a decrease in brightness. Accordingly, the thickness of the blocking filter CF-Y may be less than about 4.5μm. However, taking into account that the main peak of green light varies depending on the product and the transmittance required for green light varies depending on the product, the thickness of the blocking filter CF-Y may be changed as needed.

[0225] Figure 12A is a graph showing the relationship between wavelength and spectrum intensity measured in the first pixel region according to a comparative example and an embodiment. Figure 12B is a graph showing the relationship between wavelength and spectrum intensity measured in the second pixel area according to the comparative example and the embodiment.

[0226] exist Figure 12A and Figure 12B , curve 1 shows a comparative example in which the first dam pattern DAM-T is not included (eg, referring to Figure 5A ) and the second dam pattern DAM-F (for example, referring to Figure 5A Curve 2 shows the relationship between the spectrum intensity and wavelength in the display device according to Example 1. Figure 5A The relationship between the spectrum intensity and the wavelength in the display device DD which may include the first dam pattern DAM-T and the second dam pattern DAM-F. Curve 3 shows the relationship between the spectrum intensity and the wavelength in the display device DD which may include the first dam pattern DAM-T and the second dam pattern DAM-F. Figure 8 Detailed description of the relationship between spectrum intensity and wavelength in a display device DD that may include a first dam pattern DAM-T, a second dam pattern DAM-F, and a blocking color filter CF-Y.

[0227] Reference Figure 12A , the first pixel region PXA-R (for example, referring to Figure 5A ) may be a region from which red light (or first color light) is emitted. Hereinafter, a region with a wavelength of about 650 nm may be a red light region, a region with a wavelength of about 540 nm may be a green light region, and a region with a wavelength of about 450 nm may be a blue light region.

[0228] The peak values in the green and blue light regions of the comparative example (curve 1) may be greater than those in the green and blue light regions of Example 1 (curve 2). The peak values in the green and blue light regions of Example 1 (curve 2) may be greater than those in the green and blue light regions of Example 2 (curve 3). This means that the amount of green and blue light mixed with red light is greater in the comparative example (curve 1) than in Example 1 (curve 2). This means that the amount of green and blue light mixed with red light is greater in Example 1 (curve 2) than in Example 2 (curve 3).

[0229] Reference Figure 12B , the second pixel region PXA-G (for example, referring to Figure 5A ) may be an area from which green light (or second color light) is emitted.

[0230] The peak values in the red and blue light regions of the comparative example (curve 1) may be greater than those in the red and blue light regions of Example 1 (curve 2). The peak values in the red and blue light regions of Example 1 (curve 2) may be greater than those in the red and blue light regions of Example 2 (curve 3). This means that the amount of red and blue light mixed with green light is greater in the comparative example (curve 1) than in Example 1 (curve 2). This means that the amount of red and blue light mixed with green light is greater in Example 1 (curve 2) than in Example 2 (curve 3).

[0231] Reference Figure 12A and Figure 12B , the first dam pattern DAM-T of Example 1 (curve 2) (refer to Figure 5A ) and the second dam pattern DAM-F (refer to Figure 5A ) is effective in preventing color mixing between adjacent pixels. Figure 8 ) is effective in preventing color mixing between adjacent pixels.

[0232] Figure 12C is a graph showing light efficiency and color gamut according to a comparative example and an embodiment.

[0233] exist Figure 12C , A1 on the horizontal axis indicates the first dam pattern DAM-T according to Comparative Example 1 (refer to Figure 5A ) and the second dam pattern DAM-F (refer to Figure 5A ) display device. Figure 12C In the figure, B1 on the horizontal axis indicates that the first dam pattern DAM-T (see Figure 5A ) and the second dam pattern DAM-F (refer to Figure 5A )of Figure 5A Display device DD. Figure 12C In the figure, A2 on the horizontal axis indicates the increase of Figure 5A The display device DD is obtained by adjusting the thickness of the color filter layer CFL of the display device DD. Figure 12C In the embodiment 2, B2 on the horizontal axis indicates that the first dam pattern DAM-T (refer to Figure 8 )、Second dam pattern DAM-F (refer to Figure 8 ) and blocking filter CF-Y (refer to Figure 8 )of Figure 8 Display device DD.

[0234] exist Figure 12C , curve 1 shows light efficiency, and curve 2 shows color gamut. The terms "light efficiency" and "color gamut" used herein have the same meanings as described above.

[0235] When comparing Comparative Example 1 (A1) with Example 1 (B1), the light efficiency decreased from about 100% to about 98.4%, while the color gamut increased by about 1% from about 98.15% to about 99.13%. When comparing Example 1 (B1) with Comparative Example 2 (A2), the light efficiency decreased by about 18% from about 98.4% to about 80.4%, and the color gamut increased by about 0.72% from about 99.13% to about 99.85%. When comparing Comparative Example 2 (A2) with Example 2 (B2), the light efficiency increased from about 80.4% to about 92%, and the color gamut increased by about 0.1% from about 99.85% to about 99.95%.

[0236] By increasing Figure 5AThe color filter layer CFL of the display device DD (refer to Figure 5A ) in the display device according to Comparative Example 2 (A2), the color gamut slightly increased (about 0.72%), but the light efficiency was excessively reduced (about 18%). This reduction in light efficiency resulted in a reduction in the brightness of the display device DD.

[0237] By placing the blocking filter CF-Y (refer to Figure 8 ) was added to the display device of Example 1 (B1) in the display device according to Example 2 (B2), the light efficiency decreased by about 6.4% from about 98.4% to about 92%, however, the color gamut increased by about 0.82% from about 99.13% to about 99.95%. When compared with Comparative Example 2 (A2), the decrease in light efficiency was relatively small, and the increase in color gamut was relatively large. Accordingly, in order to increase the color gamut of the display device of Example 1 (B1), it may be more appropriate to add a blocking color filter CF-Y as in Example 2 (B2) rather than increasing the thickness of the color filter layer CFL as in Comparative Example 2 (A2).

[0238] Figure 13 is a perspective view of an electronic device ED according to an embodiment of the present disclosure. Figure 14 It shows Figure 13 FIG. 4 is a diagram showing a folded state of the electronic device ED shown in FIG.

[0239] Reference Figure 13 The electronic device ED according to an embodiment of the present disclosure may have a rectangular shape with short sides extending in a first direction DR1 and long sides extending in a second direction DR2 intersecting the first direction DR1. However, the present disclosure is not limited thereto, and the electronic device ED may have various shapes such as a circular shape and a polygonal shape other than a rectangular shape. The electronic device ED may be flexible.

[0240] Hereinafter, a direction substantially perpendicular to a plane defined by the first direction DR1 and the second direction DR2 is defined as a third direction DR3. In addition, in the specification, the wording "when viewed on a plane" may be defined as a state viewed from the third direction DR3.

[0241] The electronic device ED may include a folding area FA and a plurality of non-folding areas NFA1 and NFA2. The non-folding areas NFA1 and NFA2 may include a first non-folding area NFA1 and a second non-folding area NFA2. The folding area FA may be arranged between the first non-folding area NFA1 and the second non-folding area NFA2. The folding area FA, the first non-folding area NFA1, and the second non-folding area NFA2 may be aligned in a first direction DR1.

[0242] For example, one folding area FA and two non-folding areas NFA1 and NFA2 are shown, but the number of folding areas and non-folding areas is not limited thereto. For example, the electronic device ED may include more than two non-folding areas and multiple folding areas arranged between the non-folding areas.

[0243] The upper surface of the electronic device ED may be defined as a display surface DD-IS, and the display surface DD-IS may have a plane defined by a first direction DR1 and a second direction DR2. An image IM generated by the electronic device ED may be provided to a user through the display surface DD-IS.

[0244] The display surface DD-IS may include a display area DA and a non-display area NDA surrounding the display area DA. The display area DA displays an image, while the non-display area NDA does not display an image. The non-display area NDA may surround the display area DA and may define an edge of the electronic device ED printed in a predetermined color.

[0245] Reference Figure 14 , the electronic device ED may be a foldable electronic device ED that can be folded or unfolded. For example, the folding area FA may be bent with a curvature radius R1 relative to a folding axis FX parallel to the second direction DR2, and thus the electronic device ED may be foldable. The folding axis FX may be defined as a long axis parallel to the long side of the electronic device ED. When the electronic device ED is folded, the first non-folding area NFA1 and the second non-folding area NFA2 may face each other, and the electronic device ED may be folded inwardly so that the display surface DD-IS is not exposed to the outside. However, the embodiments of the present disclosure are not limited thereto. For example, although not shown, the electronic device ED may be folded outwardly around the folding axis FX so that the display surface DD-IS is exposed to the outside. In addition, although not shown, the electronic device ED may be folded inwardly and outwardly at the same time.

[0246] Figure 15 yes Figure 13 Exploded perspective view of the electronic device ED shown in FIG.

[0247] Reference Figure 15 The electronic device ED may include a display device DDa, an electronic module EM, a power supply module PSM, and a hinge module EDC. Although not shown, the electronic device ED may also include a mechanical structure (e.g., a hinge) for controlling the folding operation of the display device DDa. The hinge will be described in detail below.

[0248] The display device DDa can generate images and sense external inputs. The display device DDa may include a window module WM and a display module DM. The window module WM may provide a front surface for the electronic device ED. The window module WM may be arranged above the display module DM to protect it. The window module WM may transmit light generated by the display module DM and provide the light to a user.

[0249] The display module DM may include a display panel DP. Figure 15 Only the display panel DP among the laminated structure of the display module DM is shown, but basically, the display module DM may further include a plurality of components arranged on the upper and lower sides of the display panel DP. The display panel DP may include components connected to the electronic device ED. Figure 13 The display area DA and the non-display area NDA correspond to each other.

[0250] The display module DM may include a data driver DDV disposed on the non-display area NDA of the display panel DP. The data driver DDV may be directly manufactured in the form of a circuit chip and mounted on the non-display area NDA. However, the present disclosure is not limited thereto, and the data driver DDV may be mounted on a flexible circuit board connected to the display panel DP.

[0251] The electronic module EM and the power module PSM can be arranged inside the articulated module EDC. Figure 15 The electronic module EM and the power module PSM are shown in a state where they are exposed to the outside of the hinge module EDC. Although not shown, the electronic module EM and the power module PSM may be connected to each other via a separate flexible circuit board. The electronic module EM can control the operation of the display device DDa. The power module PSM can supply power to the electronic module EM.

[0252] The hinge module EDC can accommodate the display device DDa, the electronic module EM, and the power module PSM. The hinge module EDC may include a first housing HS1 and a second housing HS2 for folding the display device DDa. The first housing HS1 and the second housing HS2 may extend in the second direction DR2 and may be aligned in the first direction DR1.

[0253] The articulation module EDC may include a housing assembly HS. The housing assembly HS may include a first housing HS1 and a second housing HS2 spaced apart from each other in a first direction DR1, and a hinge housing HGH disposed between the first and second housings HS1 and HS2. The articulation module EDC may also include hinges HG1 and HG2 for connecting the first and second housings HS1 and HS2, a plurality of main boards, and a plurality of movable boards.

[0254] Figure 16A is a perspective view of an electronic device ED according to an embodiment of the present disclosure. Figure 16B is a perspective view of a curved electronic device ED-1 according to an embodiment of the present disclosure.

[0255] Figure 16A and Figure 16B Each of the electronic devices ED and ED-1 shown in FIG may include a display device DD and a housing HU that accommodates at least a portion of the display device DD. For example, a portion of a lower end of the display device DD may be accommodated in the housing HU.

[0256] Reference Figure 16A , the display device DD can display an image through the front surface DU. The top surface of the member arranged at the uppermost side of the display device DD can be defined as the front surface DU of the display device DD. According to the present invention, Figure 2 A top surface of the second display substrate 200 shown in FIG. 2 may be defined as a front surface DU of the display device DD.

[0257] Reference Figure 16B The electronic device ED-1 according to the embodiment can be bent in the second direction DR2 based on a virtual axis AX extending in the first direction DR1 (for example, in the electronic device ED-1 according to the embodiment, the side extending in the second direction DR2 can be bent based on the virtual axis AX extending in the first direction DR1). Therefore, the display device DD can be bent with a predetermined curvature, and the housing HU can have a corresponding curvature. However, the embodiment is not limited thereto, and the axis can extend in the second direction DR2 or be bent based on multiple axes extending in different directions.

[0258] The display device DD according to the present invention may be a transparent display device DD. The transparent display device DD may display information in a state in which an object PD arranged on the rear surface DB of the display device DD is transparently reflected on the front surface DU of the display device DD. Therefore, a user can recognize the object arranged on the rear surface DB of the display device DD from the front surface DU of the display device DD. The information is not limited to any one of images, content, playback screens, application execution screens, web browser screens, and various graphic objects. Figure 16A , a vase is shown as an example of the object PD, but the object PD is not limited thereto. The object PD may have a specific shape and is not limited to any one object.

[0259] Figure 17 yes Figure 15 1 is a block diagram of an electronic device ED shown in FIG.

[0260] Reference Figure 17The electronic device ED may include an electronic module EM, a power module PSM, and a display device DDa. The electronic module EM may include a control module 10, a wireless communication module 20, an image input module 30, an audio input module 40, an audio output module 50, a memory 60, an external interface module 70, and the like. The modules may be mounted on a circuit board or electrically connected via a flexible circuit board. The electronic module EM may be electrically connected to the power module PSM.

[0261] The control module 10 may control the overall operation of the electronic device ED. For example, the control module 10 may activate or deactivate the display device DDa based on user input. The control module 10 may also control the image input module 30, the sound input module 40, the sound output module 50, and the like based on user input. The control module 10 may include at least one microprocessor.

[0262] The wireless communication module 20 can transmit and receive wireless signals to and from another terminal using a Bluetooth or Wi-Fi line. The wireless communication module 20 can also transmit and receive voice signals using a general communication line. The wireless communication module 20 may include a transmitting circuit 22 for modulating and transmitting a signal to be transmitted, and a receiving circuit 24 for demodulating a received signal.

[0263] The image input module 30 can process image signals and convert them into image data that can be displayed on the display device DDa. The sound input module 40 can receive external sound signals through a microphone in a recording mode or a voice recognition mode and convert the received external sound signals into electronic voice data. The sound output module 50 can convert sound data received from the wireless communication module 20 or sound data stored in the memory 60 and output the converted sound data to the outside.

[0264] The external interface module 70 may serve as an interface to an external charger, a wired / wireless data port, and a card slot (eg, a memory card, a Subscriber Identity Module (SIM) / User Interface Model (UIM) card).

[0265] The power supply module PSM can supply power required for the overall operation of the electronic device ED. The power supply module PSM can include a universal battery device.

[0266] Although embodiments have been described, it will be understood that the present disclosure should not be limited to these embodiments, but rather that those skilled in the art will be able to make various changes and modifications within the spirit and scope of the present disclosure as claimed. Therefore, the disclosed subject matter should not be limited to any single embodiment described herein, and the scope of the present disclosure should be determined according to the appended claims.

Claims

1. A display device comprising: a base layer, the base layer including a pixel area and a peripheral area surrounding the pixel area; a pixel defining layer disposed on the base layer, the pixel defining layer comprising a light emitting opening therein; a light emitting element that overlaps the pixel region and generates source light; an encapsulation layer, the encapsulation layer comprising a first inorganic layer covering the light-emitting element, an organic layer arranged on the first inorganic layer, and a second inorganic layer arranged on the organic layer; a first dam pattern, the first dam pattern being arranged on the pixel defining layer, the first dam pattern including a first dam opening therein, the first dam opening overlapping the pixel region; a dam disposed on the encapsulation layer, the dam including an opening therein; a light control pattern disposed in the opening and converting the source light into output light; a second dam pattern arranged on the bank, the second dam pattern including a second dam opening therein; as well as a color filter, the color filter overlapping the pixel area, The organic layer is disposed in the first dam opening, and the second dam opening is filled with a filling material.

2. The display device according to claim 1, wherein The transmittance of the first dam pattern to the source light is lower than the transmittance of the encapsulation layer to the source light, and The transmittance of the second dam pattern with respect to the source light is lower than the transmittance of the filling material with respect to the source light.

3. The display device according to claim 1, wherein The transmittance of the second dam pattern with respect to the output light is lower than the transmittance of the filling material with respect to the output light.

4. The display device according to claim 3, further comprising: A first covering layer covers the bank and the light-controlling pattern.

5. The display device according to claim 4, wherein: The first cover layer contacts the light-controlling pattern and has a refractive index equal to or greater than 1.0 and equal to or less than 1.

5. The display device according to claim 1 , wherein: The first dam pattern is disposed on the pixel defining layer and above the light emitting element.

7. The display device according to claim 1, wherein: The first dam pattern is disposed between the first inorganic layer and the organic layer.

8. The display device according to claim 1, wherein The first dam pattern is disposed between the first inorganic layer and the second inorganic layer, and An upper surface of the first dam pattern contacts the second inorganic layer.

9. The display device according to claim 1, wherein: The filling material has a refractive index equal to or greater than 1.0 and equal to or less than 1.

5.

10. The display device according to claim 1, further comprising: A low refractive index layer is disposed between the color filter and the filling material.

11. The display device according to claim 1 , further comprising: A reflective pattern is disposed on an inner side surface of the first dam pattern.

12. The display device according to claim 1, further comprising: a blocking color filter arranged on a lower surface of the color filter, The pixel region is provided in plurality so as to include a first pixel region, a second pixel region and a third pixel region. The color filters are provided in plural so as to include a first color filter overlapping with the first pixel area and transmitting a first color light, a second color filter overlapping with the second pixel area and transmitting a second color light, and a third color filter overlapping with the third pixel area and transmitting a third color light, and The blocking color filter overlaps the first pixel region and the second pixel region and does not overlap the third pixel region.

13. The display device according to claim 12, wherein: The blocking filter has an extinction coefficient of 0.005 or more and 0.5 or less for the third color light.

14. The display device according to claim 12, wherein: The blocking color filter has a transmittance equal to or greater than 90% with respect to each of the first color light and the second color light.

15. The display device according to claim 12, wherein: One of the first color light and the second color light is red light or green light, and The third color light is blue light.

16. A display device comprising: a base layer including a first pixel region, a second pixel region, a third pixel region, and a peripheral region surrounding the first pixel region, the second pixel region, and the third pixel region; a pixel defining layer, the pixel defining layer being arranged on the base layer and comprising light emitting openings respectively overlapping the first pixel region, the second pixel region, and the third pixel region; a light emitting element that overlaps the first pixel region, the second pixel region, and the third pixel region and generates source light; an encapsulation layer, the encapsulation layer comprising a first inorganic layer covering the light-emitting element, an organic layer arranged on the first inorganic layer, and a second inorganic layer arranged on the organic layer; a first dam pattern disposed on the pixel defining layer, the first dam pattern including a 1-1 dam opening, a 1-2 dam opening, and a 1-3 dam opening included in the first dam pattern, the 1-1 dam opening, the 1-2 dam opening, and the 1-3 dam opening respectively overlapping the first pixel region, the second pixel region, and the third pixel region; a bank disposed on the first dam pattern, the bank including a first opening, a second opening, and a third opening therein; a first light-controlling pattern, a second light-controlling pattern, and a third light-controlling pattern, the first light-controlling pattern, the second light-controlling pattern, and the third light-controlling pattern being arranged in the first opening, the second opening, and the third opening, respectively, and converting an optical property of the source light; as well as a second dam pattern, the second dam pattern being arranged on the bank, the second dam pattern including a 2-1st dam opening, a 2-2nd dam opening, and a 2-3rd dam opening in the second dam pattern, wherein the organic layer is arranged in the 1-1st dam opening, the 1-2nd dam opening, and the 1-3rd dam opening, and the 2-1st dam opening, the 2-2nd dam opening, and the 2-3rd dam opening are filled with a filling material.

17. The display device according to claim 16, further comprising: a first color filter, a second color filter, and a third color filter, wherein the first color filter, the second color filter, and the third color filter are arranged on the filling material, wherein the first color filter overlaps the first pixel region and transmits the first color light, The second color filter overlaps the second pixel area and transmits the second color light, and The third color filter overlaps the third pixel region and transmits third color light.

18. The display device according to claim 17, further comprising: a blocking color filter arranged on lower surfaces of the first color filter and the second color filter, The blocking color filter overlaps with the first pixel region and the second pixel region, but does not overlap with the third pixel region.

19. The display device according to claim 18, wherein: The blocking filter has an extinction coefficient of 0.005 or more and 0.5 or less for the third color light.

20. The display device according to claim 18, wherein The blocking color filter has a transmittance equal to or greater than 90% with respect to each of the first color light and the second color light.

21. An electronic device that is activated in response to an electrical signal, the electronic device comprising: a display device, the display device being curved relative to a virtual axis extending in a first direction; an electronic module, the electronic module overlapping the display device; as well as a housing accommodating the display device, Wherein, the display device includes: a base layer, the base layer including a pixel area and a peripheral area surrounding the pixel area; a pixel defining layer disposed on the base layer, the pixel defining layer comprising a light emitting opening therein; a light emitting element that overlaps the pixel region and generates source light; an encapsulation layer, the encapsulation layer comprising a first inorganic layer covering the light-emitting element, an organic layer arranged on the first inorganic layer, and a second inorganic layer arranged on the organic layer; a first dam pattern, the first dam pattern being arranged on the pixel defining layer, The first dam pattern includes a first dam opening therein, the first dam opening overlapping the pixel region; a dam disposed on the encapsulation layer, the dam including an opening therein; a light control pattern disposed in the opening and converting the source light into output light; a second dam pattern arranged on the bank, the second dam pattern including a second dam opening therein; and a color filter, the color filter overlapping the pixel area, The organic layer is disposed in the first dam opening, and the second dam opening is filled with a filling material.

22. The electronic device according to claim 21, wherein The electronic device is a television, a computer monitor, an outdoor billboard, a mobile phone, a tablet computer, a navigation unit, a gaming unit or a smart watch.

23. The electronic device according to claim 21, wherein The electronic module includes a control module, an image input module and a memory.

Images