Display device

Abstract

A display device is provided. The display device includes a display panel, a first refractive pattern disposed on the display panel, in which the first refractive pattern has a first refractive index, has a planar shape including a central portion and a peripheral portion, and defines a plurality of refractive openings, and a second refractive layer disposed on the display panel, first refractive openings whose peripheral portions extend from a side of the central portion and second refractive openings whose peripheral portions extend from an apex of the central portion among the plurality of refractive openings are alternately arranged, and a second refractive layer disposed on the first refractive pattern, in which the second refractive layer has a second refractive index smaller than the first refractive index.

Description

Technical Field

[0001] The present disclosure relates to a display device, and more particularly, to a display device with improved display quality. Background Art

[0002] Recently, display devices having desirable characteristics such as miniaturization, lightness, and low power consumption are widely used in various fields. For example, plasma displays, liquid crystal displays, organic light emitting displays, and quantum dot displays are receiving attention.

[0003] Such a display device may include an optical structure that improves light output efficiency. The display quality (eg, light output efficiency, etc.) of the display device may vary according to the shape and arrangement of the optical structure. Summary of the invention

[0004] The present disclosure may provide a display device with improved display quality.

[0005] A display device according to an embodiment of the present disclosure includes a display panel, a first refraction pattern, and a second refraction layer, the first refraction pattern being arranged on the display panel, wherein the first refraction pattern has a first refractive index, has a planar shape including a central portion and a peripheral portion, and defines a plurality of refraction openings, wherein first refraction openings in which the peripheral portion extends from an edge of the central portion and second refraction openings in which the peripheral portion extends from a vertex of the central portion are alternately arranged, and the second refraction layer is arranged on the first refraction pattern, wherein the second refraction layer has a second refractive index less than the first refractive index.

[0006] In an embodiment, the first refraction openings and the second refraction openings may be alternately arranged in the first direction.

[0007] In an embodiment, the first refraction openings and the second refraction openings may be alternately arranged in a second direction crossing the first direction.

[0008] In an embodiment, the display panel may include a first pixel arranged on a substrate and a second pixel arranged on the substrate and spaced apart from the first pixel, the first pixel may include first to third sub-pixels that respectively emit light having different colors, the second pixel may include fourth to sixth sub-pixels that respectively emit light having different colors, each of the first to third sub-pixels may overlap with the first refraction opening, and each of the fourth to sixth sub-pixels may overlap with the second refraction opening.

[0009] In an embodiment, a pixel opening in which a light emitting element is arranged may be defined in the display panel, and a central portion of the plurality of refraction openings may have a polygonal shape including a first long side, a second long side opposite to the first long side, a first short side intersecting the first long side and the second long side, and a second short side opposite to the first short side, and the central portion of the plurality of refraction openings may extend in a direction parallel to an extension direction of the first long side and the second long side.

[0010] In an embodiment, the minimum distance between a third short side of the pixel opening adjacent to a first short side of a central portion of the plurality of refraction openings in the planar shape of the pixel opening and the first short side of the central portion in the planar shape of the pixel opening may be equal to the minimum distance between a fourth short side of the pixel opening adjacent to a second short side of a central portion of the plurality of refraction openings in the planar shape of the pixel opening and the second short side of the central portion of the plurality of refraction openings.

[0011] In an embodiment, a pixel opening in which a light emitting element is arranged may be defined in the display panel, a central portion of the plurality of refraction openings may overlap with the pixel opening, the central portion of the plurality of refraction openings may have a polygonal shape including a first long side, a second long side opposite to the first long side, a first short side intersecting the first long side and the second long side, and a second short side opposite to the first short side, and the central portion of the plurality of refraction openings may extend in a direction parallel to an extension direction of the first short side and the second short side.

[0012] In an embodiment, the minimum distance between the third long side of the pixel opening adjacent to the first long side of the central portion of the multiple refraction openings in the planar shape of the pixel opening and the first long side of the central portion in the planar shape of the pixel opening may be equal to the minimum distance between the fourth long side of the pixel opening adjacent to the second long side of the central portion of the multiple refraction openings in the planar shape of the pixel opening and the second long side of the central portion of the multiple refraction openings.

[0013] In an embodiment, a pixel opening in which a light emitting element is arranged may be defined in the display panel, the planar shape of the pixel opening may be a polygonal shape having a long side and a short side, the central portion of the plurality of refractive openings may overlap with the pixel opening, the central portion of the plurality of refractive openings may have a polygonal shape including a first long side, a second long side opposite to the first long side, a first short side crossing the first long side and the second long side, and a second short side opposite to the first short side, the shape of the central portion of the plurality of refractive openings may be arranged as a repeating unit of a 4×2 matrix in a plan view, the central portion positioned at the first row and the first column, the central portion positioned at the first row and the fourth column, the central portion positioned at the second row and the second column, and the central portion positioned at the second row and the third column may extend in a direction parallel to the long side of the planar shape of the pixel opening, and the central portion positioned at the first row and the second column, the central portion positioned at the first row and the third column, the central portion positioned at the second row and the first column, and the central portion positioned at the second row and the fourth column may extend in a direction parallel to the short side of the planar shape of the pixel opening.

[0014] In an embodiment, the minimum distance between the third short side of the pixel opening adjacent to the first short side of the central portion of the multiple refraction openings in the planar shape of the pixel opening and the first short side of the central portion in the planar shape of the pixel opening may be equal to the minimum distance between the fourth short side of the pixel opening adjacent to the second short side of the central portion of the multiple refraction openings in the planar shape of the pixel opening and the second short side of the central portion of the multiple refraction openings, and the minimum distance between the third long side of the pixel opening adjacent to the first long side of the central portion of the multiple refraction openings in the planar shape of the pixel opening and the first long side of the central portion in the planar shape of the pixel opening may be equal to the minimum distance between the fourth long side of the pixel opening adjacent to the second long side of the central portion of the multiple refraction openings in the planar shape of the pixel opening and the second long side of the central portion of the multiple refraction openings.

[0015] A display device according to an embodiment of the present disclosure includes a display panel, a first refraction pattern, and a second refraction layer, the display panel including a light-emitting element arranged in a pixel opening defined in the display panel, wherein the pixel opening has a planar shape including a long side and a short side, the first refraction pattern is arranged on the display panel, wherein the first refraction pattern has a first refractive index, overlaps with the pixel opening and defines a plurality of refraction openings, the plurality of refraction openings include a central portion and a peripheral portion extending from the central portion, the planar shape of the central portion is a polygonal shape having a first long side, a second long side opposite to the first long side, a first short side intersecting the first long side and the second long side, and a second short side opposite to the first short side, the second refraction layer is arranged on the first refraction pattern, wherein the second refraction layer has a second refractive index less than the first refractive index. In such an embodiment, the shapes of the central portions of the plurality of refractive openings may be arranged as a repeating unit of a 4×2 matrix in a plan view, and the central portion positioned at the first row and first column, the central portion positioned at the first row and fourth column, the central portion positioned at the second row and second column, and the central portion positioned at the second row and third column may extend in a direction parallel to the long side of the planar shape of the pixel opening, and the central portion positioned at the first row and second column, the central portion positioned at the first row and third column, the central portion positioned at the second row and first column, and the central portion positioned at the second row and fourth column may extend in a direction parallel to the short side of the planar shape of the pixel opening.

[0016] In an embodiment, the first refraction pattern may include first refraction openings whose peripheral portions extend from sides of the central portion and second refraction openings whose peripheral portions extend from a vertex of the central portion in a plan view, and the first and second refraction openings may be alternately arranged in the first direction.

[0017] In an embodiment, the first refraction pattern may include a first refraction opening whose peripheral portion extends from an edge of the central portion and a second refraction opening whose peripheral portion extends from a vertex of the central portion in a plan view, and the first refraction opening and the second refraction opening may be alternately arranged in a second direction intersecting the first direction.

[0018] In an embodiment, the minimum distance between the third short side of the pixel opening adjacent to the first short side of the central portion of the multiple refraction openings in the planar shape of the pixel opening and the first short side of the central portion in the planar shape of the pixel opening may be equal to the minimum distance between the fourth short side of the pixel opening adjacent to the second short side of the central portion of the multiple refraction openings in the planar shape of the pixel opening and the second short side of the central portion of the multiple refraction openings, and the minimum distance between the side of the pixel opening adjacent to the first long side of the central portion of the multiple refraction openings in the planar shape of the pixel opening and the first long side of the central portion in the planar shape of the pixel opening may be equal to the minimum distance between the side of the pixel opening adjacent to the second long side of the central portion of the multiple refraction openings in the planar shape of the pixel opening and the second long side of the central portion of the multiple refraction openings.

[0019] In an embodiment, the display panel may include a first pixel arranged on a substrate and a second pixel arranged on the substrate and spaced apart from the first pixel, the first pixel may include first to third sub-pixels that respectively emit light having different colors, the second pixel may include fourth to sixth sub-pixels that respectively emit light having different colors, a peripheral portion of the refractive opening overlapping with each of the first to third sub-pixels may extend from an edge of a central portion, and a peripheral portion of the refractive opening overlapping with each of the fourth to sixth sub-pixels may extend from a vertex of the central portion.

[0020] A display device according to an embodiment of the present disclosure includes a display panel, a first refraction pattern, and a second refraction layer, wherein the first refraction pattern is arranged on the display panel, wherein the first refraction pattern has a first refractive index and defines a plurality of refraction openings, wherein the plurality of refraction openings include a central portion and a peripheral portion extending from the central portion, wherein a planar shape of the central portion is a polygonal shape having a first long side, a second long side opposite to the first long side, a first short side crossing the first long side and the second long side, and a second short side opposite to the first short side, and the second refraction layer is arranged on the first refraction pattern, wherein the second refraction layer has a second refractive index less than the first refractive index. In such an embodiment, the shape of the central portion of the plurality of refraction openings in a planar view may be arranged as a repeating unit of a 2×2 matrix, the central portion positioned at the first row and the first column and the central portion positioned at the second row and the second column may extend in a direction parallel to the extension direction of the first long side and the second long side, and the central portion positioned at the first row and the second column and the central portion positioned at the second row and the first column may extend in a direction parallel to the extension direction of the first short side and the second short side.

[0021] In an embodiment, the first refraction pattern may include first refraction openings whose peripheral portions extend from sides of the central portion and second refraction openings whose peripheral portions extend from a vertex of the central portion in a plan view, and the first and second refraction openings may be alternately arranged in the first direction.

[0022] In an embodiment, the first refraction pattern may include a first refraction opening whose peripheral portion extends from an edge of the central portion and a second refraction opening whose peripheral portion extends from a vertex of the central portion in a plan view, and the first refraction opening and the second refraction opening may be alternately arranged in a second direction intersecting the first direction.

[0023] In an embodiment, a pixel opening in which a light-emitting element is arranged may be defined in the display panel, and a minimum distance between a third short side of the pixel opening adjacent to a first short side of a central portion of a plurality of refraction openings and the first short side of the central portion in a planar shape of the pixel opening may be equal to a minimum distance between a fourth short side of the pixel opening adjacent to a second short side of the central portion of the plurality of refraction openings and the second short side of the central portion of the plurality of refraction openings in a planar shape of the pixel opening, and a minimum distance between a third long side of the pixel opening adjacent to a first long side of the central portion of the plurality of refraction openings and the first long side of the central portion in a planar shape of the pixel opening may be equal to a minimum distance between a fourth long side of the pixel opening adjacent to a second long side of the central portion of the plurality of refraction openings and the second long side of the central portion of the plurality of refraction openings in a planar shape of the pixel opening.

[0024] In an embodiment, the display panel may include a first pixel arranged on a substrate and a second pixel arranged on the substrate and spaced apart from the first pixel, the first pixel may include first to third sub-pixels that respectively emit light having different colors, the second pixel may include fourth to sixth sub-pixels that respectively emit light having different colors, a peripheral portion of the refractive opening overlapping with each of the first to third sub-pixels may extend from an edge of a central portion, and a peripheral portion of the refractive opening overlapping with each of the fourth to sixth sub-pixels may extend from a vertex of the central portion.

[0025] As described above, according to an embodiment, a display device includes a display panel, a first refraction pattern and a second refraction layer, the first refraction pattern is arranged on the display panel, wherein the first refraction pattern has a first refractive index, has a planar shape including a central portion and a peripheral portion, and defines a plurality of refraction openings, wherein the first refraction openings extending from the edge of the central portion in the peripheral portion and the second refraction openings extending from the vertex of the central portion in the peripheral portion are alternately arranged, and the second refraction layer is arranged on the first refraction pattern, wherein the second refraction layer has a second refractive index less than the first refractive index. Accordingly, the front light efficiency of the display device can be enhanced and the occurrence of oblique spots (i.e., oblique line spots) can be effectively prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The illustrative, non-limiting embodiments will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings.

[0027] Figure 1 and Figure 2 is a view showing a display panel according to an embodiment.

[0028] Figure 3 It is shown Figure 2 A plan view of area A.

[0029] Figure 4 is along Figure 3 Cross-sectional views taken along lines II', II-II' and III-III'.

[0030] Figure 5 is included in Figure 4 A magnified view of the light management layer in a display device.

[0031] Figure 6 is a diagram showing a method according to an embodiment of the present invention. Figure 3 A plan view of the refraction opening of the first refraction pattern.

[0032] Figure 7 is a diagram showing a method according to another embodiment Figure 3 A plan view of the refraction opening of the first refraction pattern.

[0033] Figure 8 is a diagram showing a method according to another embodiment Figure 3 A plan view of the refraction opening of the first refraction pattern.

[0034] Figures 9 to 18 is a view showing an arrangement structure of refraction openings of a first refraction pattern.

[0035] Fig.19 is a view showing an arrangement structure of refraction openings of a first refraction pattern according to a comparative example. DETAILED DESCRIPTION

[0036] The present invention will now be described more fully below with reference to the accompanying drawings showing various embodiments. However, the present invention can be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art. Throughout the specification, similar reference numerals refer to similar elements.

[0037] It will be understood that when an element is referred to as being “on” another element, the element can be directly on the other element or intervening elements may be present therebetween. In contrast, when an element is referred to as being “directly on” another element, there are no intervening elements present.

[0038] It will be understood that, although the terms "first", "second", "third", etc., may be used herein to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, the "first element", "first component", "first region", "first layer" or "first part" discussed below can be referred to as the second element, second component, second region, second layer or second part without departing from the teachings herein.

[0039] The terms used herein are only for the purpose of describing a specific embodiment, and are not intended to be limited. Unless the context clearly indicates otherwise, "a", "an", "the" and "at least one" as used herein do not represent the limitation of quantity, and are intended to include both the singular and the plural. Therefore, the "one" element mentioned in a claim of the "said" element mentioned later includes one element and multiple elements. For example, unless the context clearly indicates otherwise, "element" has the same meaning as "at least one element". "At least one (at least one)" is not interpreted as limiting "a" or "an". "Or (or)" means "and / or (and / or)". As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. It will also be understood that when the terms “comprise” and / or “comprising” or “include” and / or “including” are used in the present specification, it specifies the presence of stated features, regions, integers, steps, operations, elements and / or components, but does not preclude the presence or addition of one or more other features, regions, integers, steps, operations, elements, components and / or clusters thereof.

[0040] In addition, relative terms such as "lower" or "bottom" and "upper" or "top" may be used herein to describe the relationship of one element to another element as shown in the figures. It will be understood that, in addition to the orientation shown in the figures, relative terms are intended to include different orientations of the device. For example, if the device in one of the multiple figures is turned over, the element described as being on the "lower" side of the other elements will then be oriented on the "upper" side of the other elements. Therefore, the term "lower" can include both the "lower" and "upper" orientations depending on the specific orientation of the figure. Similarly, if the device in one of the multiple figures is turned over, the element described as being "below" or "below" the other elements will then be oriented "above" the other elements. Therefore, the term "below" or "below" can include both the orientations of the upper and lower sides.

[0041] As used herein, "about" or "approximately" includes the stated value and means within an acceptable range of deviation for a particular value as determined by one of ordinary skill in the art, taking into account the errors associated with the measurements and with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "about" can mean within one or more standard deviations, or within ±30%, ±20%, ±10%, or ±5% of the stated value.

[0042] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present disclosure belongs. It will also be understood that, unless explicitly 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 technology and the present disclosure, and will not be interpreted in an idealized or overly formal sense.

[0043] Embodiments are described herein with reference to schematically illustrated cross-sectional views of idealized embodiments. Thus, variations in the shapes shown, such as due to manufacturing techniques and / or tolerances, are to be expected. Therefore, the embodiments described herein should not be construed as being limited to the specific shapes of the zones as shown herein, but rather include deviations in shape caused by, for example, manufacturing. For example, a zone shown or described as flat may typically have rough and / or nonlinear features. In addition, the sharp corners shown may be rounded. Therefore, the zones shown in the figures are schematic in nature, and their shapes are not intended to illustrate the precise shapes of the zones and are not intended to limit the scope of the claims.

[0044] Figure 1 and Figure 2 is a view showing a display panel according to an embodiment.

[0045] In the following, Figure 1 and Figure 2 is a view showing a display panel according to an embodiment of the present disclosure.

[0046] For example, Figure 1 is a plan view showing the display panel DP, and Figure 2 2 is a diagram showing a sensing layer (eg, Figure 3 In addition, the display panel DP showing the sensing layer 400 may be referred to as a display panel PA.

[0047] Reference Figure 1 , an embodiment of the display panel DP may include a substrate 100 and a pad portion 50 .

[0048] The substrate 100 may include a display area DA and a non-display area NDA.

[0049] The display area DA may mean an area for displaying an image. In an embodiment, a plurality of pixels PX including a transistor, a light emitting diode (LED), or the like may be arranged in the display area DA.

[0050] The pixels PX may be arranged in a matrix form along the row direction and the column direction. Each of the pixels PX may mean a single area defined by dividing the display area in a plan view for color display. Each of the pixels PX may be a minimum or basic unit capable of displaying independent colors. The display panel DP may display an image by a combination of light emitted from each of the plurality of pixels PX in the display area DA.

[0051] The non-display area NDA may mean an area where an image is not displayed. The non-display area NDA may be adjacent to the display area DA. In an embodiment, for example, the non-display area NDA may surround the display area DA. However, the present disclosure is not limited thereto. In an embodiment, for example, the non-display area NDA may surround only a portion of the display area DA.

[0052] A pad PAD for applying a driving signal to the pixel PX may be disposed in the non-display area NDA.

[0053] Reference Figure 1 and Figure 2 In an embodiment, the sensing area TCA may be positioned to overlap with the display area DA. However, the present disclosure is not limited thereto. In an embodiment, for example, the sensing area TCA may be positioned to overlap with a portion of the display area DA and the non-display area NDA. In such an embodiment, the position of the sensing area TCA may be variously changed.

[0054] A plurality of sensing electrodes 530 and 540 may be arranged in the sensing area TCA. In an embodiment, for example, a plurality of sensing electrodes 530 and 540 may be arranged on a plurality of pixels PX. In such an embodiment, a plurality of pixels PX may be arranged on the substrate 100, and a plurality of sensing electrodes 530 and 540 may be arranged on the plurality of pixels PX. However, the present disclosure is not limited thereto. For example, a touch sensor or the like may also be arranged in the sensing area TCA.

[0055] The plurality of sensing electrodes 530 and 540 may include first sensing electrodes 530 and second sensing electrodes 540 .

[0056] The first sensing electrode 530 and the second sensing electrode 540 may be electrically separated from each other. In an embodiment, for example, the first sensing electrode 530 may be a sensing input electrode, and the second sensing electrode 540 may be a sensing output electrode. However, the present disclosure is not limited thereto. In an embodiment, for example, the first sensing electrode 530 may be a sensing output electrode, and the second sensing electrode 540 may be a sensing input electrode.

[0057] First sensing electrodes 530 and second sensing electrodes 540 may be arranged in a grid shape in sensing area TCA. A plurality of first sensing electrodes 530 may be arranged in column and row directions, and a plurality of second sensing electrodes 540 may be arranged in column and row directions.

[0058] The first sensing electrode 530 and the second sensing electrode 540 may be arranged in the same layer as each other (or directly on the same layer as each other). However, the present disclosure is not limited thereto. In an embodiment, for example, the first sensing electrode 530 and the second sensing electrode 540 may be positioned in different layers from each other.

[0059] The first sensing electrode 530 and the second sensing electrode 540 may have a rhombus shape. However, the present disclosure is not limited thereto. The first sensing electrode 530 and the second sensing electrode 540 may have various shapes. In an embodiment, for example, the first sensing electrode 530 and the second sensing electrode 540 may have a polygonal shape such as a quadrilateral shape, a hexagonal shape, or a similar shape, or a circular shape, an elliptical shape, or a similar shape.

[0060] The first sensing electrode 530 and the second sensing electrode 540 may include a transparent conductor or an opaque conductor. In an embodiment, for example, the first sensing electrode 530 and the second sensing electrode 540 may include a transparent conductive oxide (TCO). The transparent conductive oxide may include indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), carbon nanotubes (CNT), graphene, or the like. These may be used alone or in combination with each other.

[0061] A plurality of refraction openings may be defined in the first sensing electrode 530 and the second sensing electrode 540. The plurality of refraction openings defined in the plurality of sensing electrodes 530 and 540 may be used to allow light emitted from the light emitting diode to be emitted to the front surface without interference.

[0062] A plurality of first sensing electrodes 530 may be electrically connected to each other through first sensing electrode connection portions 531, and a plurality of second sensing electrodes 540 may be electrically connected to each other through second sensing electrode connection portions 541. In an embodiment, for example, first sensing electrodes 530 may be connected to each other in a column direction through first sensing electrode connection portions 531, and a plurality of second sensing electrodes 540 may be connected to each other in a row direction through second sensing electrode connection portions 541.

[0063] In an embodiment where first sensing electrode 530 and second sensing electrode 540 are positioned in the same layer as each other (or directly on the same layer as each other), one of first sensing electrode connecting portion 531 and second sensing electrode connecting portion 541 may be positioned in the same layer as first sensing electrode 530 and second sensing electrode 540 (or directly on the same layer as first sensing electrode 530 and second sensing electrode 540), and the other may be positioned in a different layer than first sensing electrode 530 and second sensing electrode 540 (or directly on a different layer than first sensing electrode 530 and second sensing electrode 540). Accordingly, first sensing electrode 530 and second sensing electrode 540 may be electrically separated from each other.

[0064] The sensing electrode connection portion (e.g., the first sensing electrode connection portion 531 or the second sensing electrode connection portion 541) positioned in a different layer may be positioned in a lower layer of the first sensing electrode 530 and the second sensing electrode 540. In an embodiment, for example, the sensing electrode connection portion may be arranged on the substrate 100, and the first sensing electrode 530 and the second sensing electrode 540 may be arranged on the sensing electrode connection portion. However, the present disclosure is not limited thereto. In an embodiment, the sensing electrode connection portion (e.g., the first sensing electrode connection portion 531 or the second sensing electrode connection portion 541) positioned in a different layer may be positioned in an upper layer of the first sensing electrode 530 and the second sensing electrode 540. In an embodiment, for example, the first sensing electrode 530 and the second sensing electrode 540 may be arranged on the substrate 100, and the sensing electrode connection portion may be arranged on the first sensing electrode 530 and the second sensing electrode 540.

[0065] A plurality of voltage lines (e.g., driving voltage lines, driving low voltage lines, etc.) for transmitting driving signals (e.g., voltage, etc.) to the pixels PX arranged in the display area DA may be arranged in the non-display area NDA. In addition, a plurality of sensing lines 512 and 522 may be arranged in the non-display area NDA. The plurality of sensing lines 512 and 522 may be connected to the plurality of sensing electrodes 530 and 540.

[0066] As described above, the pad portion 50 may be arranged in the non-display area NDA. In an embodiment, for example, the pad portion 50 may be positioned in a portion of the non-display area NDA. A plurality of pads PAD may be arranged in the pad portion 50.

[0067] A flexible printed circuit board (FPCB) may be attached to the non-display area NDA. The flexible printed circuit board may be electrically connected to the pad portion 50. A driving integrated circuit may be arranged on the flexible printed circuit board. The driving integrated circuit may output a driving signal, and the driving signal may be applied to a plurality of voltage lines (a plurality of sensing lines 512 and 522 or the like) connected to the display area DA through a plurality of pads PAD included in the pad portion 50 and may be supplied to a plurality of pixels PX.

[0068] The plurality of sensing lines 512 and 522 may include first sensing lines 512 and second sensing lines 522. The first sensing lines 512 may be connected to the second sensing electrodes 540 arranged in the row direction, and the second sensing lines 522 may be connected to the first sensing electrodes 530 arranged in the column direction. In an embodiment, for example, the first sensing lines 512 and the second sensing lines 522 may be electrically connected to a portion of the plurality of pads PAD included in the pad portion 50.

[0069] In an embodiment, as described above, the sensing layer 400 may be a mutual capacitance type that senses touch using the first sensing electrode 530 and the second sensing electrode 540, but the present disclosure is not limited thereto. In an embodiment, for example, the sensing layer 400 may be a self-capacitance type. In an embodiment where the sensing layer 400 is a self-capacitance type, only one sensing electrode may be used to sense touch.

[0070] Figure 3 It is shown Figure 2 A plan view of area A. Figure 4 is along Figure 3 Cross-sectional views taken along lines II', II-II' and III-III'.

[0071] Reference Figure 1 , Figure 3 and Figure 4In an embodiment, the display device may include a display panel PA, a light control layer 500, and a window 600. The display panel PA may include a substrate 100, first circuit elements CE1, second circuit elements CE2, and third circuit elements CE3, first light emitting elements LD1, second light emitting elements LD2, and third light emitting elements LD3, a thin film encapsulation layer 300, and a sensing layer 400.

[0072] Each of the plurality of pixels PX included in the display panel PA may include a plurality of sub-pixels SP. In an embodiment, for example, the plurality of sub-pixels SP may include a first sub-pixel SP1, a second sub-pixel SP2, and a third sub-pixel SP3. In an embodiment, for example, each of the pixels PX may include one first sub-pixel SP1, two second sub-pixels SP2, and one third sub-pixel SP3. In such an embodiment, the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 may be arranged in a pentile matrix shape.

[0073] However, the present disclosure is not limited thereto. In an embodiment, for example, each of the pixels PX may include one first sub-pixel SP1, one second sub-pixel SP2, and one third sub-pixel SP3. In such an embodiment, the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 may be arranged in a stripe shape.

[0074] The first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 may respectively emit light having different colors. In an embodiment, for example, the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 may respectively be a red sub-pixel emitting red light, a green sub-pixel emitting green light, and a blue sub-pixel emitting blue light. Each of the pixels PX may emit light having various colors by adjusting the brightness of the light emitted from each of the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3.

[0075] The first subpixel SP1 may include a first circuit element CE1 and a first light emitting element LD1. The first light emitting element LD1 may be electrically connected to the first circuit element CE1.

[0076] The second sub-pixel SP2 may include a second circuit element CE2 and a second light emitting element LD2. The second light emitting element LD2 may be electrically connected to the second circuit element CE2.

[0077] The third subpixel SP3 may include a third circuit element CE3 and a third light emitting element LD3. The third light emitting element LD3 may be electrically connected to the third circuit element CE3.

[0078] Each of the first circuit element CE1, the second circuit element CE2, and the third circuit element CE3 may include a transistor TR. However, the present disclosure is not limited thereto. In an embodiment, for example, each of the first circuit element CE1, the second circuit element CE2, and the third circuit element CE3 may further include a capacitor.

[0079] The substrate 100 may be an insulating substrate including glass, quartz, plastic, or the like. In an embodiment, for example, the substrate 100 may be a flexible substrate. In this case, the substrate 100 may include a polymer resin. In an embodiment, for example, the substrate 100 may include polycarbonate (PC), polymethyl methacrylate (PMMA), polyarylate (PAR), polyethersulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), or the like. However, the present disclosure is not limited thereto.

[0080] The buffer layer 110 may be arranged on the substrate 100. The buffer layer 110 may block impurities such as oxygen and moisture that penetrate through the substrate 100. In addition, the buffer layer 110 may provide a flat surface on the substrate 100. In an embodiment, the buffer layer 110 may include an inorganic insulating material. In an embodiment, for example, the buffer layer 110 may include silicon nitride, silicon oxide, silicon oxynitride, or the like. However, the present disclosure is not limited thereto. Alternatively, the buffer layer 110 may be omitted.

[0081] A semiconductor layer 120 may be disposed on the buffer layer 110. The semiconductor layer 120 may include or be formed of amorphous silicon, polycrystalline silicon, an oxide semiconductor, or the like. In an embodiment, for example, in the case where the semiconductor layer 120 includes or is formed of polycrystalline silicon, the semiconductor layer 120 may include a channel region not doped with impurities and a source region and a drain region formed by doping impurities on both sides of the channel region. In such an embodiment, the impurity may be a P-type impurity such as boron (B). For example, the P-type impurity may be B 2 H 6 However, the present disclosure is not limited thereto. The impurities may vary depending on the type of the transistor TR. In addition, the transistor TR may have various structures. In an embodiment, for example, the transistor TR may have an N-channel metal oxide semiconductor (NMOS) structure or a P-channel metal oxide semiconductor (PMOS) structure.

[0082] A first insulating layer 130 may be disposed on the semiconductor layer 120. The first insulating layer 130 may be disposed on the buffer layer 110 while covering the semiconductor layer 120. In an embodiment, the first insulating layer 130 may include an inorganic insulating material. In an embodiment, for example, the first insulating layer 130 may include silicon nitride, silicon oxide, silicon oxynitride, or the like. These may be used alone or in combination with each other.

[0083] The gate electrode 140 may be disposed on the first insulating layer 130. The gate electrode 140 may overlap the channel region of the semiconductor layer 120. The gate electrode 140 may include or be formed of molybdenum (Mo), chromium (Cr), tungsten (W), or the like. These may be used alone or in combination with each other.

[0084] A second insulating layer 150 may be disposed on the gate electrode 140. The second insulating layer 150 may be disposed on the first insulating layer 130 while covering the gate electrode 140. In an embodiment, the second insulating layer 150 may include an inorganic insulating layer. In an embodiment, for example, the second insulating layer 150 may include silicon nitride, silicon oxide, silicon oxynitride, or the like. These may be used alone or in combination with each other.

[0085] The source electrode 161 and the drain electrode 162 may be disposed on the second insulating layer 150. The source electrode 161 and the drain electrode 162 may contact the source region and the drain region of the semiconductor layer 120, respectively, through contact holes formed through the first insulating layer 130 and the second insulating layer 150. In an embodiment, for example, the source electrode 161 and the drain electrode 162 may include aluminum (Al), titanium (Ti), chromium (Cr), tungsten (W), or the like, or be formed thereof. These may be used alone or in combination with each other.

[0086] Accordingly, the semiconductor layer 120 , the gate electrode 140 , the source electrode 161 , and the drain electrode 162 may form a transistor TR.

[0087] The planarization layer 170 may be arranged on the source electrode 161 and the drain electrode 162. The planarization layer 170 may be arranged on the second insulating layer 150 while covering the source electrode 161 and the drain electrode 162. The planarization layer 170 may provide a flat surface on the source electrode 161 and the drain electrode 162. In an embodiment, the planarization layer 170 may include an organic insulating material. In an embodiment, for example, the planarization layer 170 may include an acryl resin, an epoxy resin, a polyimide resin, a polyester resin, or the like. In an embodiment, the planarization layer 170 may include an inorganic insulating material. In an embodiment, for example, the planarization layer 170 may include silicon nitride, silicon oxide, silicon oxynitride, or the like. These may be used alone or in combination with each other.

[0088] The first light emitting element LD1, the second light emitting element LD2, and the third light emitting element LD3 may be arranged on the planarization layer 170. The first light emitting element LD1 may include a first pixel electrode 181, a first light emitting layer 201, and a first opposing electrode 211, the second light emitting element LD2 may include a second pixel electrode 182, a second light emitting layer 202, and a second opposing electrode 212, and the third light emitting element LD3 may include a third pixel electrode 183, a third light emitting layer 203, and a third opposing electrode 213.

[0089] The first pixel electrode 181, the second pixel electrode 182, and the third pixel electrode 183 may be arranged on the planarization layer 170. The first pixel electrode 181, the second pixel electrode 182, and the third pixel electrode 183 may be electrically connected to the first circuit element CE1, the second circuit element CE2, and the third circuit element CE3, respectively, through contact holes defined or formed in the planarization layer 170. The first pixel electrode 181, the second pixel electrode 182, and the third pixel electrode 183 may be separately formed in the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3, respectively. In other words, the first pixel electrode 181, the second pixel electrode 182, and the third pixel electrode 183 may be separated from each other.

[0090] The pixel defining layer 190 may be arranged on the first pixel electrode 181, the second pixel electrode 182, and the third pixel electrode 183. The pixel defining layer 190 may be formed on the planarization layer 170 while covering the first pixel electrode 181, the second pixel electrode 182, and the third pixel electrode 183. In an embodiment, the pixel defining layer 190 may include an organic material. In an embodiment, for example, the pixel defining layer 190 may include polyimide (PI), hexamethyldisiloxane (HMDSO), or the like. These may be used alone or in combination with each other.

[0091] The pixel defining layer 190 may define a first pixel opening PO1, a second pixel opening PO2, and a third pixel opening PO3 that respectively expose at least a portion of the first pixel electrode 181, at least a portion of the second pixel electrode 182, and at least a portion of the third pixel electrode 183. In an embodiment, for example, the first pixel opening PO1, the second pixel opening PO2, and the third pixel opening PO3 may respectively expose a central portion of the first pixel electrode 181, a central portion of the second pixel electrode 182, and a central portion of the third pixel electrode 183, and the pixel defining layer 190 may cover a peripheral portion of the first pixel electrode 181, a peripheral portion of the second pixel electrode 182, and a peripheral portion of the third pixel electrode 183. The pixel defining layer 190 may define the first pixel opening PO1, the second pixel opening PO2, and the third pixel opening PO3 to define the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3.

[0092] The size of the first pixel opening PO1, the size of the second pixel opening PO2, and the size of the third pixel opening PO3 may be different from each other. In an embodiment, for example, the size of the second pixel opening PO2 may be smaller than the size of the first pixel opening PO1, and the size of the third pixel opening PO3 may be larger than the size of the first pixel opening PO1. However, the present disclosure is not limited thereto.

[0093] The first light emitting layer 201 may be arranged in the first pixel opening PO1 on the first pixel electrode 181, the second light emitting layer 202 may be arranged in the second pixel opening PO2 on the second pixel electrode 182, and the third light emitting layer 203 may be arranged in the third pixel opening PO3 on the third pixel electrode 183. Each of the first light emitting layer 201, the second light emitting layer 202, and the third light emitting layer 203 may include at least one selected from an organic light emitting material and a quantum dot.

[0094] In an embodiment, for example, the organic light-emitting material may include a low molecular weight organic compound or a high molecular weight organic compound. The low molecular weight organic compound may include copper phthalocyanine, N,N'-diphenylbenzidine, tris-(8-hydroxyquinoline)aluminum, or the like, and the high molecular weight organic compound may include poly(3,4-ethylenedioxythiophene), polyaniline, polystyrene, polyfluorene, or the like. These may be used alone or in combination with each other.

[0095] In an embodiment, for example, the quantum dot may include a core comprising a II-VI group compound, a III-V group compound, a IV-VI group compound, a group IV element, a group IV compound, and a combination thereof. These may be used alone or in combination with each other. In an embodiment, for example, the quantum dot may have a core-shell structure including a core and a shell surrounding the core. The shell may be used as a protective layer for preventing chemical denaturation of the core to maintain semiconductor properties, and may be used as a charging layer for imparting electrophoretic properties to the quantum dot.

[0096] The first light emitting layer 201, the second light emitting layer 202 and the third light emitting layer 203 may emit light having different colors, respectively. In an embodiment, for example, the first light emitting layer 201, the second light emitting layer 202 and the third light emitting layer 203 may emit red light, green light and blue light, respectively.

[0097] The first relative electrode 211, the second relative electrode 212, and the third relative electrode 213 may be arranged on the first light emitting layer 201, the second light emitting layer 202, and the third light emitting layer 203, respectively. In an embodiment, the first relative electrode 211, the second relative electrode 212, and the third relative electrode 213 may be commonly formed in the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3. In such an embodiment, the first relative electrode 211, the second relative electrode 212, and the third relative electrode 213 may be connected to each other.

[0098] Light generated in the first light emitting layer 201 may be emitted in a direction from the first pixel electrode 181 toward the first opposing electrode 211, light generated in the second light emitting layer 202 may be emitted in a direction from the second pixel electrode 182 toward the second opposing electrode 212, and light generated in the third light emitting layer 203 may be emitted in a direction from the third pixel electrode 183 toward the third opposing electrode 213. In this case, each of the first pixel electrode 181, the second pixel electrode 182, and the third pixel electrode 183 may include a reflective layer or be formed thereof, and each of the first opposing electrode 211, the second opposing electrode 212, and the third opposing electrode 213 may include a semi-transmissive layer or a transmissive layer or be formed thereof. The semi-transmissive layer and the transmissive layer may be classified according to thickness.

[0099] In an embodiment, for example, the transmission layer and the semi-transmission layer may include at least one metal selected from magnesium (Mg), silver (Ag), gold (Au), calcium (Ca), lithium (Li), chromium (Cr) and aluminum (Al), or an alloy thereof. These may be used alone or in combination with each other.

[0100] For example, the transmission layer may include indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium oxide (In 2 O 3 ) or the like. These may be used alone or in combination with each other.

[0101] The pixel defining layer 190 may cover the peripheral portions of the first pixel electrode 181, the second pixel electrode 182, and the third pixel electrode 183, and the first light emitting layer 201, the second light emitting layer 202, and the third light emitting layer 203 and the first relative electrode 211, the second relative electrode 212, and the third relative electrode 213 may be arranged in the first pixel opening PO1, the second pixel opening PO2, and the third pixel opening PO3, respectively. Accordingly, the pixel defining layer 190 may surround the first light emitting element LD1, the second light emitting element LD2, and the third light emitting element LD3. In an embodiment, the pixel defining layer 190 may have a lattice shape surrounding the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 in a plan view.

[0102] The thin film encapsulation layer 300 may be disposed on the first to third opposing electrodes 211, 212, and 213. The thin film encapsulation layer 300 may cover the first to third light emitting elements LD1, LD2, and LD3 to protect the first to third light emitting elements LD1, LD2, and LD3 from impurities such as external moisture and oxygen.

[0103] In an embodiment, the thin film encapsulation layer 300 may include at least one inorganic encapsulation layer and at least one organic encapsulation layer. In an embodiment, for example, the thin film encapsulation layer 300 may include a first inorganic encapsulation layer 310 , an organic encapsulation layer 320 , and a second inorganic encapsulation layer 330 .

[0104] The first inorganic encapsulation layer 310 may be disposed on the first opposing electrode 211, the second opposing electrode 212, and the third opposing electrode 213. In an embodiment, for example, the first inorganic encapsulation layer 310 may include aluminum oxide (Al 2 O 3 ), silicon nitride (SiN x ), silicon oxide (SiO 2 ) or the like. These may be used alone or in combination with each other. The first inorganic encapsulation layer 310 may be formed along the contours of the first opposing electrode 211 , the second opposing electrode 212 , and the third opposing electrode 213 .

[0105] The organic encapsulation layer 320 may be disposed on the first inorganic encapsulation layer 310. In an embodiment, for example, the organic encapsulation layer 320 may include epoxy, acrylate, urethane acrylate, or the like. These may be used alone or in combination with each other. The organic encapsulation layer 320 may have a flat top surface, and accordingly, the organic encapsulation layer 320 may be used to flatten the upper portions of the first light emitting element LD1, the second light emitting element LD2, and the third light emitting element LD3.

[0106] The second inorganic encapsulating layer 330 may be disposed on the organic encapsulating layer 320. In an embodiment, the second inorganic encapsulating layer 330 may be formed on the first inorganic encapsulating layer 310 while covering the organic encapsulating layer 320. An edge of the second inorganic encapsulating layer 330 may contact an edge of the first inorganic encapsulating layer 310. In an embodiment, for example, the second inorganic encapsulating layer 330 may include aluminum oxide (Al 2 O 3 ), silicon nitride (SiN x ), silicon oxide (SiO 2 ) or the like. These may be used alone or in combination with each other. Since the second inorganic encapsulation layer 330 is formed on the organic encapsulation layer 320 having a flat upper surface, a flat upper surface may be provided thereon. In an embodiment, for example, the second inorganic encapsulation layer 330 may include substantially the same material as the first inorganic encapsulation layer 310.

[0107] The sensing layer 400 may be disposed on the thin film encapsulation layer 300. In an embodiment, as described above with reference to Figure 1 and Figure 2 As described above, the sensing layer 400 may sense an external input (eg, an external object that is in contact with or close to the sensing layer 400 ).

[0108] In an embodiment, for example, the sensing layer 400 may include a low resistance metal such as silver (Ag), aluminum (Al), copper (Cu), chromium (Cr), nickel (Ni), or the like, or may include a conductive nanomaterial such as silver nanowires, carbon nanotubes, or the like. These may be used alone or in combination with each other.

[0109] The sensing layer 400 may overlap with the pixel defining layer 190, and may not overlap with the first light emitting layer 201, the second light emitting layer 202, and the third light emitting layer 203. Accordingly, the light emitted from the first light emitting layer 201, the second light emitting layer 202, and the third light emitting layer 203 may be effectively prevented from being significantly weakened or affected by the sensing layer 400.

[0110] In an embodiment, the sensing layer 400 may include a sensing electrode that outputs a sensing signal corresponding to an external input to a sensing driving part and a driving electrode that receives a driving signal from the sensing driving part. In an embodiment, for example, a portion of the sensing layer 400 may be a sensing electrode, and another portion of the sensing layer 400 may be a driving electrode.

[0111] The light control layer 500 may be disposed on the sensing layer 400. In an embodiment, for example, the light control layer 500 may include a first refraction pattern 510 and a second refraction layer 520.

[0112] The first refraction pattern 510 may be disposed on the sensing layer 400. In an embodiment, the first refraction pattern 510 may be formed on the thin film encapsulation layer 300 while covering the sensing layer 400. The first refraction pattern 510 may have a first refractive index that is a relatively low refractive index.

[0113] The first refraction pattern 510 may define a first refraction opening RO1, a second refraction opening RO2, and a third refraction opening RO3. The first refraction opening RO1, the second refraction opening RO2, and the third refraction opening RO3 may overlap with the first pixel opening PO1, the second pixel opening PO2, and the third pixel opening PO3, respectively. In this case, the first refraction pattern 510 may overlap with the pixel defining layer 190. In an embodiment, for example, the first refraction pattern 510 may have a lattice shape overlapping with the pixel defining layer 190 in a plan view. The first refraction opening RO1, the second refraction opening RO2, and the third refraction opening RO3 may expose the upper surface of the thin film encapsulation layer 300.

[0114] In an embodiment, for example, the first refraction opening RO1 may have a shape substantially the same as that of the first pixel opening PO1 in a plan view, the second refraction opening RO2 may have a shape substantially the same as that of the second pixel opening PO2 in a plan view, and the third refraction opening RO3 may have a shape substantially the same as that of the third pixel opening PO3 in a plan view.

[0115] In an embodiment, for example, the size of the first refraction opening RO1, the size of the second refraction opening RO2, and the size of the third refraction opening RO3 may be respectively larger than the size of the first pixel opening PO1, the size of the second pixel opening PO2, and the size of the third pixel opening PO3. In this case, the edge of the first refraction opening RO1, the edge of the second refraction opening RO2, and the edge of the third refraction opening RO3 may respectively surround the edge of the first pixel opening PO1, the edge of the second pixel opening PO2, and the edge of the third pixel opening PO3.

[0116] However, the present disclosure is not limited thereto. In another embodiment, the size of the first refraction opening RO1, the size of the second refraction opening RO2, and the size of the third refraction opening RO3 may be smaller than the size of the first pixel opening PO1, the size of the second pixel opening PO2, and the size of the third pixel opening PO3, respectively. In such an embodiment, the edge of the first pixel opening PO1, the edge of the second pixel opening PO2, and the edge of the third pixel opening PO3 may surround the edge of the first refraction opening RO1, the edge of the second refraction opening RO2, and the edge of the third refraction opening RO3, respectively. However, the present disclosure is not limited thereto.

[0117] In an embodiment, for example, the first refraction pattern 510 may include a photoresist. The photoresist may be applied on the thin film encapsulation layer 300 on which the sensing layer 400 is arranged and may be patterned by exposure and development, and then the first refraction pattern 510 having the first refraction opening RO1, the second refraction opening RO2, and the third refraction opening RO3 may be formed by using photocuring or a similar process. Through photocuring, the chemical resistance of the first refraction pattern 510 may be increased, and the exhaust gas generated in the first refraction pattern 510 may be reduced.

[0118] The second refraction layer 520 may be disposed on the first refraction pattern 510. In an embodiment, the second refraction layer 520 may be formed on the thin film encapsulation layer 300 while covering the first refraction pattern 510. The second refraction layer 520 may have a second refractive index that is a relatively high refractive index.

[0119] In an embodiment, the difference between the second refractive index of the second refractive layer 520 and the first refractive index of the first refractive pattern 510 may be about 0.15 or more. In such an embodiment, the value obtained by subtracting the first refractive index from the second refractive index may be about 0.15 or more. In an embodiment, for example, the first refractive index may be about 1.5, and the second refractive index may be about 1.65 or more. However, the present disclosure is not limited thereto.

[0120] When the difference between the second refractive index of the second refractive layer 520 and the first refractive index of the first refractive pattern 510 is less than about 0.15, the front light efficiency may be rapidly reduced. Accordingly, in an embodiment, the difference between the second refractive index of the second refractive layer 520 and the first refractive index of the first refractive pattern 510 may be about 0.15 or more, so that the front light efficiency of the display device can be increased.

[0121] In an embodiment, the second refraction layer 520 may fill the first refraction opening RO1, the second refraction opening RO2, and the third refraction opening RO3 of the first refraction pattern 510. In such an embodiment, the second refraction layer 520 may overlap with the first light emitting element LD1, the second light emitting element LD2, and the third light emitting element LD3 and the pixel defining layer 190. The upper surface of the second refraction layer 520 may be substantially flat. Accordingly, the second refraction layer 520 may provide a flat surface on a layer (e.g., window 600) disposed thereon.

[0122] In an embodiment, the second refractive index of the second refractive layer 520 may be greater than the first refractive index of the first refractive pattern 510. Accordingly, light may be refracted at the interface between the first refractive pattern 510 and the second refractive layer 520. Since the second refractive index is greater than the first refractive index, light incident on the second refractive layer 520 in the lateral direction of the display device may be refracted or reflected at the interface between the first refractive pattern 510 and the second refractive layer 520 and may be emitted at the front of the display device. Accordingly, the front light efficiency of the display device may be increased.

[0123] In an embodiment, for example, the second refraction layer 520 may be formed by a UV curing process after an inkjet process. In an embodiment, for example, the second refraction layer 520 may include siloxane and a zirconium oxide (ZrO x ), aluminum oxide (AlO x ) and titanium oxide (TiO x ) are used alone or in combination with each other. However, the present disclosure is not limited thereto.

[0124] The window 600 may be disposed on the second refractive layer 520. The window 600 may protect components of the display device from external impacts and provide a display surface of the display device.

[0125] In an embodiment, for example, the window 600 may include a polymer resin such as polycarbonate (PC), polymethyl methacrylate (PMMA), polyarylate (PAR), polyethersulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), or the like, glass, etc. These may be used alone or in combination with each other.

[0126] However, the present disclosure is not limited thereto. In an embodiment, for example, the display device may further include a polarizing layer. The polarizing layer may be arranged on the second refractive layer 520. The polarizing layer may reduce the reflection of external light of the display device. For example, when external light passes through the polarizing layer and is reflected from the lower portion of the polarizing layer (e.g., the first relative electrode 211, the second relative electrode 212, and the third relative electrode 213) and then passes through the polarizing layer again, the phase of the external light may change due to the external light passing through the polarizing layer twice. Accordingly, the phase of the reflected light is different from the phase of the incident light entering the polarizing layer, so that destructive interference may occur, and the reflection of the external light is reduced, so that the visibility of the display device can be enhanced.

[0127] Figure 5 is included in Figure 4 A magnified view of the light management layer in a display device.

[0128] Reference Figure 4 and Figure 5 In an embodiment, the refractive opening RO may be Figure 4 One of the first refraction opening RO1, the second refraction opening RO2 and the third refraction opening RO3. Figure 3 The refraction opening RO may be one of the first refraction opening RO1, the second refraction opening RO2, the third refraction opening RO3 and the fourth refraction opening RO4.

[0129] The first refraction pattern 510 may have a bottom surface contacting the upper surface of the thin film encapsulation layer 300 and a side surface exposed by the refraction opening RO. An inclination angle AN of the side surface of the first refraction pattern 510 relative to the bottom surface may be about 65° or more and about 90° or less.

[0130] When the inclination angle AN is less than about 65°, light incident on the second refraction layer 520 may not be totally reflected from the side surface of the first refraction pattern 510 .

[0131] When the inclination angle AN exceeds about 90°, the undercut may not be formed. Accordingly, light incident on the second refraction layer 520 may be emitted toward a side surface of the display device.

[0132] Accordingly, in embodiments, the inclination angle AN may be greater than or equal to about 65° and less than or equal to about 90° so that light emitted from the light emitting layers 201 , 202 , and 203 of the light emitting elements LD1 , LD2 , and LD3 may be totally reflected from the side surface of the first refraction pattern 510 .

[0133] When the angle, pattern, or similar feature of the first refraction pattern 510 is fixed, light efficiency may be enhanced as the first thickness TK1 of the first refraction pattern 510 increases. However, as the first thickness TK1 of the first refraction pattern 510 increases, the flow of the material forming the second refraction layer 520 may be hindered, resulting in the occurrence of an unfilled portion of the material forming the second refraction layer 520 (i.e., an unfilled phenomenon).

[0134] Accordingly, the second thickness TK2 of the second refraction layer 520 may increase to prevent the occurrence of the unfilling phenomenon. However, as the second thickness TK2 of the second refraction layer 520 increases, the thickness of the display device may increase, and the impact resistance characteristic may be weakened.

[0135] In the following, reference will be made to Figure 3 and Figures 6 to 18 The shape and arrangement structure of the first refraction patterns 510 capable of enhancing the light efficiency of the display device and preventing the occurrence of the unfilling phenomenon are described in detail.

[0136] Figure 6 is a diagram showing a method according to an embodiment of the present invention. Figure 3 A plan view of a refraction opening of a first refraction pattern. Figure 6 In the present invention, the first pixel opening PO1 may refer to a pixel opening corresponding to any one of a plurality of sub-pixels, and may not refer to a pixel opening corresponding to a plurality of sub-pixels. Figure 3 and Figure 4 For example, the first pixel opening PO1 may refer to a first pixel opening PO2 relative to Figure 3 and Figure 4 The second pixel opening PO2.

[0137] Reference Figures 3 to 6 In an embodiment, pixel openings (e.g., first pixel opening PO1, second pixel opening PO2, and third pixel opening PO3) in which light emitting elements (e.g., first light emitting element LD1, second light emitting element LD2, and third light emitting element LD3) are arranged may be defined in the display panel PA. In such an embodiment, the display panel PA may include the above reference Figure 4 The configuration from the substrate 100 to the sensing layer 400 is described.

[0138] In an embodiment, as described above, the first refraction pattern 510 may be arranged on the display panel PA. In an embodiment, for example, when a plurality of pixels PX (eg, Figure 1) each includes three sub-pixels, the first refraction pattern 510 may include a first sub-refraction pattern RP1, a second sub-refraction pattern RP2, and a third sub-refraction pattern RP3. However, the present disclosure is not limited thereto. In an embodiment, for example, when each of the plurality of pixels PX includes four sub-pixels, the first refraction pattern 510 may include a first sub-refraction pattern RP1, a second sub-refraction pattern RP2, a third sub-refraction pattern RP3, and a fourth sub-refraction pattern RP4.

[0139] Hereinafter, for convenience of description, the second sub refraction pattern RP2 overlapping the first pixel opening PO1 will be mainly described.

[0140] In an embodiment, the first pixel opening PO1 may be positioned within the refraction opening RO of the second sub-refraction pattern RP2 in a plan view. In such an embodiment, the size of the refraction opening RO may be greater than that of the first pixel opening PO1 when viewed in a plan view.

[0141] In an embodiment, the first pixel opening PO1 may have a polygonal shape when viewed in a plan view. In an embodiment, for example, when viewed in a plan view, the first pixel opening PO1 may have a rectangular shape with a chamfered corner portion. The corner portion may be chamfered into a straight line or a curve. However, the present disclosure is not limited thereto. In an embodiment, for example, when viewed in a plan view, the first pixel opening PO1 may have a circular shape, an elliptical shape, or the like.

[0142] In an embodiment, for example, when viewed in a plan view, the shape of the refraction opening RO of the second sub-refraction pattern RP2 may be similar to the shape of the first pixel opening PO1. However, the present disclosure is not limited thereto. In an embodiment, for example, when viewed in a plan view, the shape of the refraction opening RO of the second sub-refraction pattern RP2 may be different from the shape of the first pixel opening PO1.

[0143] In an embodiment, the shape of the refraction opening RO of the second sub-refraction pattern RP2 may include a central portion CP and a peripheral portion EP when viewed in a plan view.

[0144] In an embodiment, a central portion CP of the refraction opening RO of the second sub-refraction pattern RP2 may overlap a pixel opening in the display panel PA where the light emitting element is arranged.

[0145] In an embodiment, a central portion CP of the refraction opening RO of the second sub-refraction pattern RP2 may have a quadrilateral shape including a first long side LS1, a second long side LS2 opposite to the first long side LS1, a first short side SS1 intersecting the first long side LS1 and the second long side LS2, and a second short side SS2 opposite to the first short side SS1.

[0146] In the embodiment, as described above, the pixel opening may also have a quadrilateral shape including long sides parallel to the first and second long sides LS1 and LS2 and short sides parallel to the first and second short sides SS1 and SS2 .

[0147] In an embodiment, the peripheral portion EP of the refraction opening RO of the second sub-refraction pattern RP2 may extend from the vertex of the central portion CP. In an embodiment, for example, the peripheral portion EP may extend in different directions from the vertex of the central portion CP.

[0148] In the case of the display device according to the comparative example, when viewed in a plan view, the shape of the refraction opening of the first refraction pattern 510 may include only the central portion CP. That is, when viewed in a plan view, the shape of the refraction opening of the first refraction pattern 510 according to the comparative example may not include the peripheral portion EP. In this case, the corners of the refraction opening of the first refraction pattern 510 according to the comparative example may be close to a circular shape. As the corners become rounded, the pixel size increases, and thus the filling characteristic (capillary pressure) may decrease. Accordingly, in the process of forming the second refraction layer 520 on the first refraction pattern 510, an unfilled phenomenon in which the periphery of the refraction opening is not filled may occur.

[0149] In the display device according to the embodiment, since the refraction opening RO of the second sub-refraction pattern RP2 further includes the peripheral portion EP extending from the central portion CP, the unfilling phenomenon may be effectively prevented.

[0150] In such an embodiment, as the width of the peripheral portion EP decreases, the filling characteristic may increase. In addition, as the length of the peripheral portion EP increases, the filling characteristic may increase. In an embodiment, for example, the width of the peripheral portion EP may be about 0 micrometers (μm) or more, and the length of the peripheral portion EP may be greater than or equal to about 0 μm and less than or equal to about 4 μm. However, the present disclosure is not limited thereto.

[0151] Figure 7 is a diagram showing a method according to another embodiment Figure 3 A plan view of the refraction opening of the first refraction pattern.

[0152] Reference Figure 6 and Figure 7 , Figure 7 The refraction opening RO' of the second sub-refraction pattern RP2' may have a Figure 6 The shape of the refraction opening RO of the second sub-refraction pattern RP2 is different from the shape of the refraction opening RO of the second sub-refraction pattern RP2.

[0153] Reference Figures 3 to 5 and Figure 7For example, when viewed in a plan view, the first pixel opening PO1 may be positioned within the refraction opening RO' of the second sub-refraction pattern RP2'. In other words, when viewed in a plan view, the size of the refraction opening RO' on the plane may be larger than that of the first pixel opening PO1.

[0154] In an embodiment, for example, when viewed in a plan view, the shape of the refraction opening RO' of the second sub-refraction pattern RP2' may be similar to the shape of the first pixel opening PO1. However, the present disclosure is not limited thereto. In an embodiment, for example, when viewed in a plan view, the shape of the refraction opening RO' of the second sub-refraction pattern RP2' may be different from the shape of the first pixel opening PO1.

[0155] In an embodiment, the shape of the refraction opening RO' of the second sub-refraction pattern RP2' may include a central portion CP' and a peripheral portion EP' when viewed in a plan view.

[0156] In an embodiment, a central portion CP' of the refraction opening RO' of the second sub-refraction pattern RP2' may overlap a pixel opening in which the light emitting element is arranged in the display panel PA.

[0157] In an embodiment, a central portion CP' of the refraction opening RO' of the second sub-refraction pattern RP2' may have a quadrilateral shape including a first long side LS1, a second long side LS2 opposite to the first long side LS1, a first short side SS1 crossing the first long side LS1 and the second long side LS2, and a second short side SS2 opposite to the first short side SS1.

[0158] In the embodiment, as described above, the pixel opening may also have a quadrilateral shape including long sides parallel to the first and second long sides LS1 and LS2 and short sides parallel to the first and second short sides SS1 and SS2 .

[0159] In an embodiment, the peripheral portion EP' of the refraction opening RO' of the second sub-refraction pattern RP2' may extend from the side of the central portion CP'. For example, the peripheral portion EP' may extend from the side of the central portion CP' in different directions.

[0160] like Figure 1 , Figure 3 , Figure 6 and Figure 7 As shown in, in the embodiment, according to Figure 6 The refractive opening RO of the embodiment shown in FIG. Figure 7 The refraction openings RO' of the embodiment shown in can be positioned alternately.

[0161] In the embodiment, according to Figure 6 The refractive opening RO of the embodiment shown in FIG. Figure 7The refraction openings RO' of the embodiment shown in the figure may be alternately positioned along the first direction DRa. However, the present disclosure is not limited thereto. In the embodiment, according to Figure 6 The refractive opening RO of the embodiment shown in FIG. Figure 7 The refraction openings RO' of the embodiment shown in may be alternately positioned along the second direction DRb.

[0162] In an embodiment, the display panel PA may include a first pixel and a second pixel spaced apart from each other. The first pixel may include first to third sub-pixels that respectively emit light having different colors, and the second pixel may include fourth to sixth sub-pixels that respectively emit light having different colors. Figure 3 As shown in , the first sub-refractive pattern RP1, the second sub-refractive pattern RP2, and the third sub-refractive pattern RP3 respectively overlapping the first to third sub-pixels may have a shape in which the peripheral portion EP extends from the vertex of the central portion CP. The first sub-refractive pattern RP1, the third sub-refractive pattern RP3, and the fourth sub-refractive pattern RP4 respectively overlapping the fourth to sixth sub-pixels may have a peripheral portion EP (e.g., Figure 7 The peripheral part EP') in the central part CP (for example, Figure 7 The shape of the edge extending from the center part CP').

[0163] In the case of the display device according to the comparative example, when viewed in a plan view, the refraction opening of the first refraction pattern 510 may have one shape. In such a comparative example, only the refraction opening according to the comparative example may be positioned. Figure 6 The refractive opening RO of the embodiment shown in FIG. Figure 7 In this case, a portion where a distance between the light emitting element and the first refraction pattern 510 increases may be formed according to a direction of the peripheral portion EP, and thus brightness may be reduced according to an azimuth angle.

[0164] In the display device according to the comparative example, the refraction openings RO and RO' having different shapes of the second sub-refraction pattern RP2 and the second sub-refraction pattern RP2' may be alternately positioned. In such a comparative example, the refraction openings RO and RO' may be respectively located for the sub-pixel SP (eg, Figure 4 ) are alternately positioned. In this case, when the first refraction pattern 510 overlaps with the sub-pixel SP having a rectangular shape, a color separation phenomenon may occur compared to when the first refraction pattern 510 overlaps with another sub-pixel SP having a shape close to a square.

[0165] However, in the display device according to the embodiment of the present disclosure, the refraction openings RO and RO' having different shapes of the second sub-refraction pattern RP2 and the second sub-refraction pattern RP2' may be alternately positioned and arranged in relation to the plurality of pixels PX (eg, reference Figure 1 ), the portion of the peripheral portion EP (or the peripheral portion EP') extending from the central portion CP (or the central portion CP') may be the same as the side (or vertex). Accordingly, the brightness can be effectively prevented from being reduced according to the azimuth angle, and the occurrence of the color separation phenomenon can be effectively prevented. That is, the azimuth angle dependency can be improved.

[0166] Figure 8 is a diagram showing a method according to another embodiment Figure 3 A plan view of the refraction opening of the first refraction pattern.

[0167] Reference Figures 6 to 8 , Figure 8 The refraction opening RO" of the second sub-refraction pattern RP2" may differ from the pixel opening (eg, the first pixel opening PO1 or the third pixel opening PO3) only in shape and overlap. Figure 6 The refraction opening RO of the second sub-refraction pattern RP2 and Figure 7 The refraction opening RO' of the second sub-refraction pattern RP2'.

[0168] Reference Figures 3 to 5 and Figure 8 For example, when viewed in a plan view, the third pixel opening PO3 may be positioned within the refraction opening RO" of the second sub-refraction pattern RP2". In other words, when viewed in a plan view, the size of the refraction opening RO" may be greater than that of the third pixel opening PO3.

[0169] In an embodiment, for example, when viewed in a plan view, the shape of the refraction opening RO" of the second sub-refraction pattern RP2" may be similar to the shape of the third pixel opening PO3. However, the present disclosure is not limited to this. In an embodiment, for example, when viewed in a plan view, the shape of the refraction opening RO" of the second sub-refraction pattern RP2" may be different from the shape of the third pixel opening PO3.

[0170] In an embodiment, the shape of the refraction opening RO" of the second sub-refraction pattern RP2" may include a central portion CP" and a peripheral portion EP" when viewed in a plan view.

[0171] In an embodiment, a central portion CP" of the refraction opening RO" of the second sub-refraction pattern RP2" may overlap with a pixel opening in which the light emitting element is arranged in the display panel PA.

[0172] In an embodiment, a central portion CP" of the refraction opening RO" of the second sub-refraction pattern RP2" may have a quadrilateral shape including a first long side LS1, a second long side LS2 opposite to the first long side LS1, a first short side SS1 intersecting the first long side LS1 and the second long side LS2, and a second short side SS2 opposite to the first short side SS1.

[0173] In such an embodiment, as described above, the pixel opening may also have a quadrilateral shape including long sides parallel to the first and second long sides LS1 and LS2 and short sides parallel to the first and second short sides SS1 and SS2 .

[0174] In an embodiment, the peripheral portion EP' of the refraction opening RO' of the second sub-refraction pattern RP2' may extend from the side of the central portion CP'. In an embodiment, for example, the peripheral portion EP' may extend from the side of the central portion CP' in different directions. However, the present disclosure is not limited thereto. Figure 6 In an embodiment similar to the embodiment shown in , the peripheral portion EP" may extend from the apex of the central portion CP" in different directions.

[0175] like Figure 6 and Figure 7 As shown in FIG. 1 , in an embodiment, the central portion CP or CP′ of the refractive opening RO or RO′ may extend in a direction parallel to the first long side LS1 and the second long side LS2. In this case, in a direction parallel to a third direction DRc between the first direction DRa and the second direction DRb, the central portion CP or CP′ of the refractive opening RO or RO′ may be substantially equal to the central portion CP or CP′ of the refractive opening RO or RO′. Figure 8 The central portion CP" of the refractive opening RO" shown in FIG.

[0176] In an embodiment, when viewed in a plan view, a minimum distance between a side of the pixel opening adjacent to the first short side SS1 and the first short side SS1 in the shape of the pixel opening (i.e., a first distance D1 or D1') may be equal to a minimum distance between a side of the pixel opening adjacent to the second short side SS2 and the second short side SS2 in the shape of the pixel opening (i.e., a second distance D2 or D2').

[0177] like Figure 8 As shown in FIG. 1 , in another embodiment, the central portion CP" of the refractive opening RO" may extend in a direction parallel to the first short side SS1 and the second short side SS2. In this case, in a direction parallel to the fourth direction DRd crossing the third direction DRc, the central portion CP" of the refractive opening RO" may be relatively Figure 6 and Figure 7 The central portion CP or CP' of the refractive opening RO or RO' shown in FIG is longer. For example, the fourth direction DRd may be perpendicular to the third direction DRc.

[0178] In another embodiment, when observed in a plan view, the minimum distance between the side of the pixel opening adjacent to the first long side LS1 and the first long side LS1 in the shape of the pixel opening (i.e., the third distance D3) may be equal to the minimum distance between the side of the pixel opening adjacent to the second long side LS2 and the second long side LS2 in the shape of the pixel opening (i.e., the fourth distance D4).

[0179] In the case of the display device according to the comparative example, the refraction opening of the first refraction pattern 510 may not be symmetrically positioned with respect to the pixel opening. Figure 6 and Figure 7 The minimum distance between the side of the pixel opening adjacent to the first short side SS1 and the first short side SS1 (i.e., the first distance D1 or D1') in the shape of the pixel opening and the minimum distance between the side of the pixel opening adjacent to the second short side SS2 and the second short side SS2 (i.e., the second distance D2 or D2') in the shape of the pixel opening may be different from each other, and Figure 8 In the shape of the pixel opening shown in FIG. 1 , the minimum distance (ie, the third distance D3) between the side of the pixel opening adjacent to the first long side LS1 and the first long side LS1 and the Figure 8 In the shape of the pixel opening shown in FIG, the minimum distance between the side of the pixel opening adjacent to the second long side LS2 and the second long side LS2 (ie, the fourth distance D4) may be different from each other. In this case, brightness differences may occur for each position due to brightness asymmetry depending on the azimuth.

[0180] However, in the display device according to the embodiment of the present disclosure, the refraction opening RO, RO' or RO" of the first refraction pattern 510 may be symmetrically positioned relative to the pixel opening PO1 or PO3. Accordingly, since the symmetry of brightness increases according to the azimuth angle, the brightness difference for each position may be reduced.

[0181] Figures 9 to 18 is a view showing an arrangement structure of refraction openings of a first refraction pattern.

[0182] Reference Figure 1 , Figure 3 , Figure 4 and Figures 6 to 9In an embodiment, the display panel PA may include a plurality of sub-pixels (e.g., a first sub-pixel SP1, a second sub-pixel SP2, a third sub-pixel SP3, a fourth sub-pixel SP4, a fifth sub-pixel SP5, a sixth sub-pixel SP6, a seventh sub-pixel SP7, and an eighth sub-pixel SP8) including a pixel opening having a polygonal shape with a long side and a short side. In an embodiment, for example, the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 may be a first light-emitting element LD1 emitting light of a first color among a plurality of light-emitting elements LD, and the fourth sub-pixel SP4, the fifth sub-pixel SP5, and the sixth sub-pixel SP6 may be a second light-emitting element LD2 emitting light of a second color among a plurality of light-emitting elements LD. However, the present disclosure is not limited thereto. In an embodiment, for example, when a light-emitting element emitting only green light has a polygonal shape including a long side and a short side, the plurality of sub-pixels may all mean a light-emitting element emitting green light.

[0183] In an embodiment, each of the plurality of sub-pixels may overlap the first refraction pattern 510 when viewed in a plan view. As described above, the shape of the refraction opening of the first refraction pattern 510 may include a central portion CP and a peripheral portion EP when viewed in a plan view. Here, the central portion CP may correspond to Figures 6 to 8 One of the central parts CP, CP' and CP", and the peripheral part EP may correspond to Figures 6 to 8 In an embodiment, when viewed in a plan view, the shape of a central portion CP, CP' or CP" of a plurality of refraction openings (e.g., a plurality of refraction openings RO, RO' or RO") overlapping each of a plurality of sub-pixels may be repeatedly arranged as a unit of a 4×2 matrix, that is, arranged as a repeating unit of a 4×2 matrix.

[0184] Reference Figures 6 to 8 and Fig.10 In an embodiment, when viewed in a plan view, the center portion CP, CP′ or CP″ positioned in the first row, first column and fourth column and the second row, second column and third column may be in the same Figure 6 , Figure 7 or Figure 8 The shape of the pixel opening PO1 or PO3 shown in FIG. 1 extends in a direction parallel to the long side ( Fig.10 '-' in the middle), and the center portion CP, CP' or CP" positioned in the first row, second column and third column and the second row, first column and fourth column can be in the same manner as Figure 6 , Figure 7 or Figure 8 The shape of the pixel opening PO1 or PO3 shown in FIG. 1 extends in a direction parallel to the short side thereof ( Fig.10Here, the center portion CP, CP' or CP" positioned in the first row and first column may correspond to Fig.10 The third sub-pixel SP3 in .

[0185] In an embodiment, when observed in a plan view, the minimum distance between the side of the pixel opening adjacent to the first short side SS1 (or the first long side LS1) and the first short side SS1 (or the first long side LS1) in the shape of the pixel opening PO1 or PO3 (i.e., the first distance D1 or D1', or the third distance D3) may be equal to the minimum distance between the side of the pixel opening adjacent to the second short side SS2 (or the second long side LS2) and the second short side SS2 (or the second long side LS2) in the shape of the pixel opening PO1 or PO3 (i.e., the second distance D2 or D2', or the fourth distance D4).

[0186] However, the present disclosure is not limited thereto. In an embodiment, for example, the refraction opening may be asymmetric with respect to the pixel opening.

[0187] In an embodiment, Fig.10 As shown in FIG. 1 , when viewed in a plan view, the central portion CP, CP′, or CP″ may be formed from a shape extending in a direction parallel to the long side of the shape of the pixel opening PO1 or PO3 ( Fig.10 '-' in ) are arranged as a repeating unit of a 4×2 matrix, but are not limited thereto. Alternatively, when viewed in a plan view, the central portion CP, CP' or CP" may extend from a shape ( Fig.10 The repeating units are arranged as a 4×2 matrix starting with the '+' in the figure.

[0188] Reference Fig.11 In the embodiment, as described above, the shape of the peripheral portion EP extending from the side of the central portion CP when viewed in a plan view ( Fig.11 '×' in the center) and the shape of the peripheral portion EP extending from the vertex of the central portion CP ( Fig.11 The '+' in the first direction DRa may be alternately positioned. In this article, the shape ( Fig.11 The '×' in Figure 7 or Figure 8 , and the shape of the peripheral portion EP extending from the vertex of the central portion CP ( Fig.11 The '+' in Figure 6 .

[0189] However, the present disclosure is not limited thereto. In the embodiment, as described above, when viewed in a plan view, the shape ( Fig.11 The '×' and '+' in ) may be alternately positioned in the second direction DRb.

[0190] In an embodiment, when viewed in plan view, Fig.11 As shown in FIG. 1 , the peripheral portion EP may be in a shape extending from the side of the central portion CP ( Fig.11 '×' in ' ... Fig.11 The repeating units are arranged as a 4×2 matrix starting with the '+' in the figure.

[0191] Fig.10 The first arrangement structure ST1 and Fig.11 The second arrangement structures ST2 may be combined with each other so that the first refraction pattern (eg, Figure 3 The first refraction pattern 510) may be arranged as Fig.12 The third arrangement structure ST3.

[0192] Reference Figures 6 to 8 and Fig.13 In the embodiment, when viewed in a plan view, the center portion CP, CP' or CP" has a shape extending in a direction parallel to the long side of the shape of the pixel opening PO1 or PO3 (ie, Fig.10 '-' in ) and the shape in which the central portion CP, CP' or CP" extends in a direction parallel to the short side of the shape of the pixel opening PO1 or PO3 (ie, Fig.10 The '+' in the first direction DRa can be positioned alternately.

[0193] In an embodiment, when observed in a plan view, the minimum distance between the side of the pixel opening adjacent to the first short side SS1 (or the first long side LS1) and the first short side SS1 (or the first long side LS1) in the shape of the pixel opening PO1 or PO3 (i.e., the first distance D1 or D1', or the third distance D3) may be equal to the minimum distance between the side of the pixel opening adjacent to the second short side SS2 (or the second long side LS2) and the second short side SS2 (or the second long side LS2) in the shape of the pixel opening PO1 or PO3 (i.e., the second distance D2 or D2', or the fourth distance D4).

[0194] However, the present disclosure is not limited thereto. In an embodiment, for example, the refraction opening may be asymmetric with respect to the pixel opening.

[0195] In an embodiment, Fig.13 As shown in FIG. 1 , when viewed in a plan view, the central portion CP, CP′, or CP″ may be formed from a shape extending in a direction parallel to the long side of the shape of the pixel opening PO1 or PO3 ( Fig.10'-' in '-') are arranged as a repeating unit of a 4×2 matrix (or a repeating unit of a 2×2 matrix), but are not limited thereto. Alternatively, the central portion CP, CP' or CP" may be formed from a shape extending in a direction parallel to the short side of the shape of the pixel opening PO1 or PO3 ( Fig.10 '+' in ) are arranged as a repeating unit of a 4×2 matrix (or a repeating unit of a 2×2 matrix).

[0196] Reference Fig.14 As described above, when viewed in a plan view, the shape of the peripheral portion EP extending from the side of the central portion CP ( Fig.11 '×' in the center) and the shape of the peripheral portion EP extending from the vertex of the central portion CP ( Fig.11 The '+' in the second direction DRb may be positioned alternately.

[0197] However, the present disclosure is not limited thereto. As described above, when viewed in a plan view, the shape ( Fig.11 The '×' and '+' in ) may be alternately positioned in the first direction DRa.

[0198] In an embodiment, when viewed in plan view, Fig.14 As shown in FIG. , the peripheral portion EP is a shape extending from the vertex of the central portion CP ( Fig.11 The peripheral portion EP may be arranged in a shape extending from the side of the central portion CP ( '+' in ), but is not limited thereto. Fig.11 '×' in '×') are arranged as a repeating unit of a 4×2 matrix (or a repeating unit of a 2×2 matrix).

[0199] Fig.13 The fourth arrangement structure ST4 and Fig.14 The fifth arrangement structures ST5 may be combined with each other so that the first refraction pattern (eg, Figure 3 The first refraction pattern 510) may be arranged as Fig.15 The third arrangement structure ST6.

[0200] Reference Figures 6 to 8 and Fig.16 In the embodiment, when viewed in a plan view, the center portion CP, CP' or CP" has a shape extending in a direction parallel to the long side of the shape of the pixel opening PO1 or PO3 (ie, Fig.10 '-' in ) and the shape in which the central portion CP, CP' or CP" extends in a direction parallel to the short side of the shape of the pixel opening PO1 or PO3 (ie, Fig.10 The '+' in the second direction DRb may be positioned alternately.

[0201] In an embodiment, when observed in a plan view, the minimum distance between the side of the pixel opening adjacent to the first short side SS1 (or the first long side LS1) and the first short side SS1 (or the first long side LS1) in the shape of the pixel opening PO1 or PO3 (i.e., the first distance D1 or D1', or the third distance D3) may be equal to the minimum distance between the side of the pixel opening adjacent to the second short side SS2 (or the second long side LS2) and the second short side SS2 (or the second long side LS2) in the shape of the pixel opening PO1 or PO3 (i.e., the second distance D2 or D2', or the fourth distance D4).

[0202] However, the present disclosure is not limited thereto. In an embodiment, for example, the refraction opening may be asymmetric with respect to the pixel opening.

[0203] In an embodiment, Fig.16 As shown in FIG. 1 , when viewed in a plan view, the central portion CP, CP′, or CP″ may be formed from a shape extending in a direction parallel to the short side of the shape of the pixel opening PO1 or PO3 ( Fig.10 '+' in the middle) are arranged as a repeating unit of a 2×2 matrix, but are not limited thereto. Alternatively, the central portion CP, CP' or CP" may be formed from a shape extending in a direction parallel to the long side of the shape of the pixel opening PO1 or PO3 ( Fig.10 The '-' in the ) are arranged as a repeating unit in a 2×2 matrix.

[0204] Reference Fig.17 As described above, when viewed in a plan view, the shape of the peripheral portion EP extending from the side of the central portion CP ( Fig.11 '×' in the center) and the shape of the peripheral portion EP extending from the vertex of the central portion CP ( Fig.11 The '+' in the first direction DRa can be positioned alternately.

[0205] However, the present disclosure is not limited thereto. In the embodiment, as described above, when viewed in a plan view, the shape ( Fig.11 The '×' and '+' in ) may be alternately positioned in the second direction DRb.

[0206] In an embodiment, when viewed in plan view, Fig.17 As shown in FIG. , the peripheral portion EP is a shape extending from the vertex of the central portion CP ( Fig.11 '+' in the center portion CP) are arranged as a repeating unit of a 2×2 matrix, but are not limited thereto. Alternatively, the peripheral portion EP may be in a shape extending from the side of the central portion CP ( Fig.11 The repeating units are arranged as a 2×2 matrix starting from the '×' in the figure.

[0207] Fig.16 The seventh arrangement structure ST7 and Fig.17 The eighth arrangement structures ST8 may be combined with each other so that the first refraction pattern (eg, Figure 3 The first refraction pattern 510) can be Fig.18 The ninth arrangement structure ST9 is arranged as a repetition unit of a 2×2 matrix.

[0208] Fig.19 is a view showing an arrangement structure of refraction openings of a first refraction pattern according to a comparative example.

[0209] Reference Fig.19 , in the case of the display device according to the comparative example, the arrangement structure ST' is repeated diagonally, so that it is possible to visually recognize diagonal mura.

[0210] However, in the case of the display device according to the embodiment of the present disclosure, when providing Figures 6 to 8 The shape and Figures 10 to 18 When the arrangement structure is repeated, the repeated arrangement structure may not be repeated in the oblique direction. Accordingly, the generation of oblique plaques can be effectively prevented.

[0211] Embodiments of the present invention may be applied to display devices and electronic devices including display devices, such as high-resolution smart phones, mobile phones, smart tablets, smart watches, tablet personal computers (PCs), navigation systems for vehicles, televisions, computer monitors, notebook computers and / or the like.

[0212] The present invention should not be construed as being 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 present invention to those skilled in the art.

[0213] Although the present invention has been specifically shown and described with reference to embodiments of the present invention, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope or spirit of the present invention as defined by the appended claims. Therefore, it should be understood that the foregoing is an illustration of various embodiments and should not be construed as limited to the specific embodiments disclosed, and it should be understood that modifications to the disclosed embodiments as well as other embodiments are intended to be included within the scope of the appended claims. In addition, embodiments or portions of embodiments may be combined in whole or in part without departing from the scope of the present invention.

Claims

1. A display device, comprising: Display panel; a first refraction pattern arranged on the display panel, wherein the first refraction pattern has a first refractive index, has a planar shape including a central portion and a peripheral portion, and defines a plurality of refraction openings in which first refraction openings in the peripheral portion extending from a side of the central portion and second refraction openings in the peripheral portion extending from a vertex of the central portion are alternately arranged; and A second refractive layer is disposed on the first refractive pattern, wherein the second refractive layer has a second refractive index smaller than the first refractive index.

2. The display device according to claim 1, wherein: The first refraction openings and the second refraction openings are alternately arranged in a first direction.

3. The display device according to claim 1, wherein: The first refraction openings and the second refraction openings are alternately arranged in a second direction crossing the first direction.

4. The display device according to claim 1, wherein: The display panel includes a first pixel arranged on a substrate and a second pixel arranged on the substrate and spaced apart from the first pixel. The first pixel includes first to third sub-pixels that respectively emit light of different colors, The second pixel includes fourth to sixth sub-pixels that respectively emit light having different colors, Each of the first to third sub-pixels overlaps with the first refraction opening, and Each of the fourth to sixth sub-pixels overlaps with the second refraction opening.

5. The display device according to claim 1, wherein: A pixel opening in which a light emitting element is arranged is defined in the display panel, The central portion of the plurality of refraction openings has a polygonal shape including a first long side, a second long side opposite to the first long side, a first short side crossing the first long side and the second long side, and a second short side opposite to the first short side, and The central portions of the plurality of refraction openings extend in a direction parallel to an extending direction of the first long side and the second long side.

6. The display device according to claim 5, wherein: A minimum distance between a third short side of the pixel opening adjacent to the first short side of the central portion of the multiple refraction openings in the planar shape of the pixel opening and the first short side of the central portion in the planar shape of the pixel opening is equal to a minimum distance between a fourth short side of the pixel opening adjacent to the second short side of the central portion of the multiple refraction openings in the planar shape of the pixel opening and the second short side of the central portion of the multiple refraction openings.

7. The display device according to claim 1, wherein: A pixel opening in which a light emitting element is arranged is defined in the display panel, The central portion of the plurality of refraction openings overlaps the pixel opening, The central portion of the plurality of refraction openings has a polygonal shape including a first long side, a second long side opposite to the first long side, a first short side crossing the first long side and the second long side, and a second short side opposite to the first short side, and The central portions of the plurality of refraction openings extend in a direction parallel to an extending direction of the first short side and the second short side.

8. The display device according to claim 7, wherein: The minimum distance between the third long side of the pixel opening adjacent to the first long side of the central portion of the multiple refraction openings in the planar shape of the pixel opening and the first long side of the central portion in the planar shape of the pixel opening is equal to the minimum distance between the fourth long side of the pixel opening adjacent to the second long side of the central portion of the multiple refraction openings in the planar shape of the pixel opening and the second long side of the central portion of the multiple refraction openings.

9. The display device according to claim 1, wherein: A pixel opening in which a light emitting element is arranged is defined in the display panel, The planar shape of the pixel opening is a polygonal shape having a long side and a short side, The central portion of the plurality of refraction openings overlaps the pixel opening, The central portion of the plurality of refraction openings has a polygonal shape including a first long side, a second long side opposite to the first long side, a first short side crossing the first long side and the second long side, and a second short side opposite to the first short side, The shape of the central portion of the plurality of refractive openings is arranged as a repeating unit of a 4×2 matrix in a plan view, The central portion positioned at the first row and the first column, the central portion positioned at the first row and the fourth column, the central portion positioned at the second row and the second column, and the central portion positioned at the second row and the third column extend in a direction parallel to the long side of the planar shape of the pixel opening, and The central portion positioned at the second column of the first row, the central portion positioned at the third column of the first row, the central portion positioned at the first column of the second row, and the central portion positioned at the fourth column of the second row extend in a direction parallel to the short side of the planar shape of the pixel opening.

10. The display device according to claim 9, wherein: a minimum distance between a third short side of the pixel opening adjacent to the first short side of the central portion of the plurality of refraction openings in the planar shape of the pixel opening and the first short side of the central portion in the planar shape of the pixel opening is equal to a minimum distance between a fourth short side of the pixel opening adjacent to the second short side of the central portion of the plurality of refraction openings in the planar shape of the pixel opening and the second short side of the central portion of the plurality of refraction openings, and The minimum distance between the third long side of the pixel opening adjacent to the first long side of the central portion of the multiple refraction openings in the planar shape of the pixel opening and the first long side of the central portion in the planar shape of the pixel opening is equal to the minimum distance between the fourth long side of the pixel opening adjacent to the second long side of the central portion of the multiple refraction openings in the planar shape of the pixel opening and the second long side of the central portion of the multiple refraction openings.

11. A display device, comprising: a display panel including a light emitting element arranged in a pixel opening defined in the display panel, wherein the pixel opening has a planar shape including a long side and a short side; a first refraction pattern, the first refraction pattern being arranged on the display panel, wherein the first refraction pattern has a first refractive index, overlaps with the pixel opening, and defines a plurality of refraction openings, the plurality of refraction openings including a central portion and a peripheral portion extending from the central portion, the central portion having a planar shape of a polygon having a first long side, a second long side opposite to the first long side, a first short side crossing the first long side and the second long side, and a second short side opposite to the first short side; and a second refractive layer, the second refractive layer being arranged on the first refractive pattern, wherein the second refractive layer has a second refractive index smaller than the first refractive index, wherein the shapes of the central portions of the plurality of refractive openings are arranged as a repeating unit of a 4×2 matrix in a plan view, The central portion positioned at the first row and the first column, the central portion positioned at the first row and the fourth column, the central portion positioned at the second row and the second column, and the central portion positioned at the second row and the third column extend in a direction parallel to the long side of the planar shape of the pixel opening, and The central portion positioned at the second column of the first row, the central portion positioned at the third column of the first row, the central portion positioned at the first column of the second row, and the central portion positioned at the fourth column of the second row extend in a direction parallel to the short side of the planar shape of the pixel opening.

12. The display device according to claim 11, wherein: The first refraction pattern includes a first refraction opening in which the peripheral portion extends from a side of the central portion and a second refraction opening in which the peripheral portion extends from a vertex of the central portion in the plan view, and The first refraction openings and the second refraction openings are alternately arranged in a first direction.

13. The display device according to claim 11, wherein: The first refraction pattern includes a first refraction opening in which the peripheral portion extends from a side of the central portion and a second refraction opening in which the peripheral portion extends from a vertex of the central portion in the plan view, and The first refraction openings and the second refraction openings are alternately arranged in a second direction crossing the first direction.

14. The display device according to claim 11, wherein: a minimum distance between a third short side of the pixel opening adjacent to the first short side of the central portion of the plurality of refraction openings in the planar shape of the pixel opening and the first short side of the central portion in the planar shape of the pixel opening is equal to a minimum distance between a fourth short side of the pixel opening adjacent to the second short side of the central portion of the plurality of refraction openings in the planar shape of the pixel opening and the second short side of the central portion of the plurality of refraction openings, and wherein a minimum distance between a side of the pixel opening in the planar shape of the pixel opening adjacent to the first long side of the central portion of the multiple refraction openings and the first long side of the central portion in the planar shape of the pixel opening is equal to a minimum distance between a side of the pixel opening in the planar shape of the pixel opening adjacent to the second long side of the central portion of the multiple refraction openings and the second long side of the central portion of the multiple refraction openings.

15. The display device according to claim 11, wherein: The display panel includes a first pixel arranged on a substrate and a second pixel arranged on the substrate and spaced apart from the first pixel. The first pixel includes first to third sub-pixels that respectively emit light of different colors, The second pixel includes fourth to sixth sub-pixels that respectively emit light having different colors, The peripheral portion of the refraction opening overlapping each of the first to third sub-pixels extends from a side of the central portion, and The peripheral portion of the refraction opening overlapping each of the fourth to sixth sub-pixels extends from a vertex of the central portion.

16. A display device, comprising: Display panel; a first refraction pattern arranged on the display panel, wherein the first refraction pattern has a first refractive index and defines a plurality of refraction openings, the plurality of refraction openings including a central portion and a peripheral portion extending from the central portion, the central portion having a planar shape of a polygon having a first long side, a second long side opposite to the first long side, a first short side crossing the first long side and the second long side, and a second short side opposite to the first short side; and a second refractive layer, the second refractive layer being arranged on the first refractive pattern, wherein the second refractive layer has a second refractive index smaller than the first refractive index, wherein the shapes of the central portions of the plurality of refractive openings are arranged as a repeating unit of a 2×2 matrix in a plan view, The central portion positioned at the first row and the first column and the central portion positioned at the second row and the second column extend in a direction parallel to an extending direction of the first long side and the second long side, and The central portion positioned at the first row and the second column and the central portion positioned at the second row and the first column extend in a direction parallel to an extending direction of the first short side and the second short side.

17. The display device according to claim 16, wherein: The first refraction pattern includes a first refraction opening in which the peripheral portion extends from a side of the central portion and a second refraction opening in which the peripheral portion extends from a vertex of the central portion in the plan view, and The first refraction openings and the second refraction openings are alternately arranged in a first direction.

18. The display device according to claim 16, wherein: The first refraction pattern includes a first refraction opening in which the peripheral portion extends from a side of the central portion and a second refraction opening in which the peripheral portion extends from a vertex of the central portion in the plan view, and The first refraction openings and the second refraction openings are alternately arranged in a second direction crossing the first direction.

19. The display device according to claim 16, wherein: A pixel opening in which a light emitting element is arranged is defined in the display panel, a minimum distance between a third short side of the pixel opening adjacent to the first short side of the central portion of the plurality of refraction openings in a planar shape of the pixel opening and the first short side of the central portion is equal to a minimum distance between a fourth short side of the pixel opening adjacent to the second short side of the central portion of the plurality of refraction openings in the planar shape of the pixel opening and the second short side of the central portion of the plurality of refraction openings, and Wherein, in the planar shape of the pixel opening, the minimum distance between the third long side of the pixel opening adjacent to the first long side of the central part of the multiple refraction openings and the first long side of the central part is equal to the minimum distance between the fourth long side of the pixel opening adjacent to the second long side of the central part of the multiple refraction openings and the second long side of the central part of the multiple refraction openings in the planar shape of the pixel opening.

20. The display device according to claim 16, wherein: The display panel includes a first pixel arranged on a substrate and a second pixel arranged on the substrate and spaced apart from the first pixel. The first pixel includes first to third sub-pixels that respectively emit light of different colors, The second pixel includes fourth to sixth sub-pixels that respectively emit light having different colors, The peripheral portion of the refraction opening overlapping each of the first to third sub-pixels extends from a side of the central portion, and The peripheral portion of the refraction opening overlapping each of the fourth to sixth sub-pixels extends from a vertex of the central portion.

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