Display panel

Abstract

A display panel is provided, including: an upper display substrate including a display area and a non-display area adjacent to the display area, the display area including first to third pixel areas and light-shielding areas adjacent to the first to third pixel areas; a lower display substrate including first to third light-emitting elements configured to emit light of a first color and respectively superposed with the first to third pixel areas; and a plurality of spacers superposed with the display area and arranged between the upper display substrate and the lower display substrate.

Description

[0001] This application claims priority to and the benefit of Korean Patent Application No. 10-2019-0000689, filed on January 3, 2019, in the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] Aspects of the disclosure relate to a display panel. BACKGROUND

[0003] Display panels include a transmissive display panel for selectively transmitting source light generated from a light source and a light emitting display panel for generating source light therein. The display panel can include different types of light control layers depending on pixels to generate a color image. The light control layer can transmit only a part of a wavelength range in a wavelength range of the source light or convert a color of the source light. Some light control layers can change a characteristic of light without changing a color of the source light. SUMMARY

[0004] According to an aspect of an embodiment of the disclosure, a display panel including a light control layer is provided. According to another aspect of an embodiment of the disclosure, a display panel in which visibility can be improved is provided.

[0005] According to one or more embodiments, a display panel includes an upper display substrate including a display area and a non-display area adjacent to the display area, wherein the display area includes first to third pixel areas and a light shielding area adjacent to the first to third pixel areas, a lower display substrate including first to third light emitting elements configured to emit first color light and respectively overlap the first to third pixel areas, and a plurality of spacers overlapping the display area and disposed between the upper display substrate and the lower display substrate, wherein the upper display substrate includes a base substrate, and a light control layer on the base substrate and configured to convert the first color light to output light of a different color, wherein the upper display substrate and the lower display substrate are spaced apart from each other, and the plurality of spacers are between the upper display substrate and the lower display substrate.

[0006] In an embodiment, the light control layer can include a first conversion portion including a first luminescent body configured to convert the first color light and emit second color light different from the first color light and overlap the first pixel area, a second conversion portion including a second luminescent body configured to convert the first color light and emit third color light different from the first color light and the second color light and overlap the second pixel area, and a transmission portion configured to transmit the first color light and overlap the third pixel area.

[0007] In an embodiment, the spacer can include a first spacer between the first conversion part and the first light emitting element, a second spacer between the second conversion part and the second light emitting element, and a third spacer between the transmission part and the third light emitting element.

[0008] In an embodiment, the spacer can overlap the light blocking area, and can be disposed in at least one of a space between the first conversion part and the second conversion part, a space between the second conversion part and the transmission part, and a space between the transmission part and the first conversion part.

[0009] In an embodiment, the lower display substrate can include a lower base substrate, and a display element layer on the lower base substrate and including the first to third light emitting elements and a pixel definition layer, wherein each of the first to third light emitting elements can include a first electrode, a second electrode, and a light emitting layer between the first electrode and the second electrode, and the pixel definition layer includes an opening part exposing at least a portion of the first electrode, and wherein the spacer can not overlap the opening part.

[0010] In an embodiment, the light emitting layers of the first to third light emitting elements can be provided in an integrated shape.

[0011] In an embodiment, the display panel can further include an adhesive member overlapping the non-display area, disposed between the upper display substrate and the lower display substrate, and defining an inner space together with the upper display substrate and the lower display substrate.

[0012] In an embodiment, the display panel can further include a filler configured to fill a separate space between the upper display substrate and the lower display substrate in which the spacer is disposed.

[0013] In an embodiment, the display panel can further include an air layer in a separate space between the upper display substrate and the lower display substrate in which the spacer is disposed.

[0014] In an embodiment, the lower display substrate can further include a cover layer covering the first to third light emitting elements, and wherein the spacer can be between the light control layer and the cover layer.

[0015] In an embodiment, the spacer can overlap the light blocking area.

[0016] In an embodiment, the first to third pixel areas can be sequentially and alternately arranged along a first direction, wherein each of the first to third pixel areas can be arranged as a pixel area emitting the same color of light along a second direction intersecting the first direction, and wherein the spacer can be between two adjacent pixel areas among the pixel areas arranged along the second direction.

[0017] In an embodiment, the upper display substrate can further include a color filter layer, wherein the color filter layer can include: a first color filter positioned between the base substrate and the light control layer and overlapping the first pixel area; a second color filter positioned between the base substrate and the light control layer and overlapping the second pixel area; and a third color filter positioned between the base substrate and the light control layer and overlapping the third pixel area.

[0018] In an embodiment, the first color filter can be configured to transmit light of a second color different from the first color, the second color filter can be configured to transmit light of a third color different from the first color and the second color, and the third color filter can be configured to transmit light of the first color.

[0019] In an embodiment, the upper display substrate can further include a low-refraction layer positioned between the color filter layer and the light control layer.

[0020] In an embodiment, the first color can be blue.

[0021] According to one or more embodiments, a display panel includes: an upper display substrate including a display area and a non-display area adjacent to the display area, wherein the display area includes first to third pixel areas and a light-shielding area adjacent to the first to third pixel areas; a lower display substrate including first to third light emitting elements configured to emit light of a first color and overlapping the first to third pixel areas, respectively; and a plurality of spacers overlapping the display area and arranged between the upper display substrate and the lower display substrate to provide a separation space between the upper display substrate and the lower display substrate, wherein the upper display substrate includes: a base substrate; a light control layer positioned on the base substrate and configured to convert the light of the first color into light of a different color and emit the converted light of the first color; and a light-shielding member overlapping the light-shielding area and arranged between the base substrate and the light control layer, wherein the spacers have a structure extending from the light-shielding member in the separation space.

[0022] In an embodiment, the upper display substrate can further include first to third color filters positioned between the base substrate and the light control layer and overlapping the first to third pixel areas, respectively, and separated by the light-shielding member or the spacers.

[0023] In an embodiment, a thickness of each of the spacers can be greater than a thickness of each of the first to third color filters in a thickness direction of the upper display substrate.

[0024] In an embodiment, the spacers can be positioned between two adjacent pixel areas emitting light of different colors among the first to third pixel areas. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings are included to provide a further understanding of the inventive concept, and are incorporated in and constitute a part of this specification. The drawings illustrate some exemplary embodiments of the inventive concept and, together with the description, serve to explain the principles of the inventive concept. In the drawings:

[0026] Figure 1A is a perspective view of a display panel according to an embodiment of the inventive concept;

[0027] Figure 1B is a sectional view of a display panel according to an embodiment of the inventive concept;

[0028] Figure 2A is a plan view of a display panel according to an embodiment of the inventive concept;

[0029] Figure 2B is an equivalent circuit diagram of a pixel shown in FIG. Figure 2A

[0030] Figure 3 is a plan view of a pixel region of a display panel according to an embodiment of the inventive concept;

[0031] Figure 4 is a sectional view of a pixel region of a display panel according to an embodiment of the inventive concept taken along line I-I' of Figure 3

[0032] Figure 5 is a view schematically showing an optical characteristic of a control layer according to an embodiment of the inventive concept;

[0033] Figure 6 is a sectional view of a pixel region of a display panel according to another embodiment of the inventive concept;

[0034] Figure 7 is a plan view of a pixel region of a display panel according to another embodiment of the inventive concept; and

[0035] Figure 8 is a sectional view of a pixel region of a display panel according to another embodiment of the inventive concept. DETAILED DESCRIPTION

[0036] In this specification, when it is referred to that a component (or a region, a layer, a part, etc.) is "on" another component, "connected to" or "combined to" another component, it means that the component can be directly on, directly connected to, or directly combined to the other component, or one or more other components can be present therebetween.

[0037] Like reference numerals refer to like elements throughout. Also, in the drawings, the thickness, proportions, and sizes of components can be exaggerated for clarity.​​

[0038] "and / or" includes all combinations of one or more of the referenced components.

[0039] It is understood that the terms "first" and "second" are used herein to describe various components, but such components should not be limited by such terms. Such terms are used to distinguish one component from another. For example, a first component could be termed a second component, and, similarly, a second component could be termed a first component, without departing from the scope of the inventive concept. The singular expression includes the plural expression, unless the context clearly indicates otherwise.

[0040] In addition, terms such as "below," "lower," "above," and "upper" are used to describe the relationships of the components shown in the drawings. The terms are described as relative concepts based on the directions shown in the drawings. It is understood that the spatial relative terms include different orientations of the device in use or operation in addition to the orientation depicted in the drawings.

[0041] Unless defined otherwise, all terms used herein, including technical terms and scientific terms, have the same meanings as those generally understood by those skilled in the art to which the present inventive concept pertains. Also, unless defined otherwise, all terms used herein, such as terms defined in a generally used dictionary, should be interpreted as having meanings consistent with the meanings in the context of the relevant art and should not be interpreted in idealized or overly formal sense unless they are clearly defined in this disclosure.

[0042] In various embodiments of the inventive concept, the terms "comprise", "include", or variations thereof specify the properties, regions, fixed numbers, steps, processes, elements, and / or components, but do not exclude other properties, regions, fixed numbers, steps, processes, elements, and / or components.

[0043] Hereinafter, some example embodiments of the inventive concept will be described with reference to the accompanying drawings.

[0044] Figure 1A is a perspective view of a display panel according to an embodiment of the inventive concept; Figure 1B is a cross-sectional view of a display panel according to an embodiment of the inventive concept.

[0045] In addition to large electronic devices such as monitors or external billboards, the display panel DP according to the embodiments of the inventive concept can also be applied to medium electronic devices such as personal computers, notebook computers, personal digital terminals, vehicle navigation units, game consoles, smart phones, tablet computers, and cameras. However, these are only some examples, and it will be understood that the display panel DP can be applied in other electronic devices without departing from the scope of the inventive concept.

[0046] According to embodiments of the inventive concept, the display panel DP can be any one of a liquid crystal display panel, an electrophoretic display panel, a micro electro mechanical system (MEMS) display panel, an electro wetting display panel, and an organic light emitting display panel, but is not particularly limited thereto.

[0047] Although not shown separately, the display panel DP can further include a frame member or a molding member, and according to the type of the display panel DP, can further include a backlight unit.

[0048] Referring to Figure 1A , the display panel DP can include a lower display substrate 100 and an upper display substrate 200 spaced apart from the lower display substrate 100. As shown in Figure 1A , the display panel DP can display an image through a display surface DP-IS. The display surface DP-IS can be parallel to a plane defined by the first direction DR1 and the second direction DR2.

[0049] The display surface DP-IS can include a display area DA and a non-display area NDA. Pixels PX are disposed in the display area DA and pixels PX are not disposed in the non-display area NDA. In an embodiment, the non-display area NDA is defined outside of a periphery of the display surface DP-IS. In an embodiment, the display area DA can be surrounded by the non-display area NDA.

[0050] A normal direction of the display surface DP-IS (i.e., a thickness direction of the display panel DP) is indicated by a third direction DR3. In the present specification, the meaning of "viewed on a plane or located on a plane" indicates a case of viewing in the third direction DR3. The front surface (or upper surface) and the rear surface (or lower surface) of each of the layers or units described below are distinguished by the third direction DR3. However, as a relative concept, the directions indicated by the first to third directions DR1, DR2, and DR3 can be converted to other directions, for example, opposite directions.

[0051] In embodiments of the inventive concept, a display panel DP having a flat display surface DP-IS is shown, but the inventive concept is not limited thereto. In an embodiment, the display panel DP can include a curved display surface or a stereoscopic display surface. The stereoscopic display surface can include a plurality of display areas indicating different directions.

[0052] Referring to Figure 1BAn internal space (e.g., a predetermined internal space) GP can be defined between the upper display substrate 200 and the lower display substrate 100. The sealant SLM overlaps the non-display area NDA and can be disposed between the upper display substrate 200 and the lower display substrate 100. In addition, the internal space GP can be provided by the sealant SLM that binds the upper display substrate 200 and the lower display substrate 100. The sealant SLM overlaps the non-display area NDA and can include an organic adhesive member or an inorganic adhesive member. In an embodiment, the sealant SLM can include a frit.

[0053] Figure 2A is a plan view of a display panel according to an embodiment of the inventive concept; Figure 2B is Figure 2A is an equivalent circuit diagram of a pixel shown in

[0054] Referring to Figure 2A , the arrangement relationship of the signal lines GL1 to GLn and DL1 to DLm and the pixels PX11 to PXnm on a plane is shown. The signal lines GL1 to GLn and DL1 to DLm can include a plurality of gate lines GL1 to GLn and a plurality of data lines DL1 to DLm.

[0055] Each of the pixels PX11 to PXnm is connected to a corresponding one of the plurality of gate lines GL1 to GLn and a corresponding one of the plurality of data lines DL1 to DLm. Each of the pixels PX11 to PXnm can include a pixel driving circuit and a display element. Depending on the configuration of the pixel driving circuit, more kinds of signal lines can be provided on the display panel DP.

[0056] The pixels PX11 to PXnm can be provided in a matrix, but are not limited thereto. In an embodiment, the pixels PX11 to PXnm can be provided in a PenTile form. In an embodiment, the pixels PX11 to PXnm can be provided in a diamond form.

[0057] The gate driving circuit GDC can be provided in the non-display area NDA. In an embodiment, the gate driving circuit GDC can be integrated into the display panel DP by a silicon oxide gate driver circuit (OSG) process or an amorphous silicon gate driver circuit (ASG) process.

[0058] Referring to Figure 2B , a pixel PX connected to one gate line GL, one data line DL, and one power line PL among the pixels PX11 to PXnm is illustratively shown. However, the configuration of the pixel PX is not limited thereto and can be variously implemented.

[0059] According to the inventive concept, a pixel PX includes a light-emitting element OLED and a pixel circuit PXC. Furthermore, the light-emitting element OLED includes a first electrode AE, a second electrode CE, and a light-emitting layer. According to an embodiment, the light-emitting element OLED can emit light of a first color. In an embodiment, the first color can be blue having a wavelength of approximately 400 nm to approximately 520 nm. Furthermore, the light-emitting element OLED can generate light itself through the light-emitting layer. Here, the light-emitting element OLED is described as an organic light-emitting element.

[0060] The light emitting layer of the light emitting element OLED, the first electrode AE ​​and the second electrode CE may be included in the display element layer DP-OLED (see Figure 4 )middle.

[0061] The pixel circuit PXC as a circuit portion for driving the light emitting element OLED includes a first transistor T1 (or a switching transistor), a second transistor T2 (or a driving transistor), and a capacitor Cap. The pixel circuit PXC may be included in the circuit element layer DP-CL (see Figure 4 )middle.

[0062] The light emitting element OLED generates light of a first color by an electrical signal supplied from the first transistor T1 and the second transistor T2 .

[0063] The first transistor T1 outputs a data signal applied to the data line DL in response to a gate signal applied to the gate line GL. The capacitor Cap is charged with a voltage corresponding to the data signal received from the first transistor T1. A first power supply voltage ELVDD is supplied to the first electrode AE ​​through the second transistor T2, and a second power supply voltage ELVSS is supplied to the second electrode CE. The second power supply voltage ELVSS may have a lower level than the first power supply voltage ELVDD.

[0064] The second transistor T2 is electrically connected to the light emitting element OLED through the first electrode AE. The second transistor T2 controls a driving current ID corresponding to the amount of charge stored in the capacitor Cap flowing to the light emitting element OLED. The light emitting element OLED can emit light during the conduction period of the second transistor T2.

[0065] Figure 3 is a plan view of a pixel area of ​​a display panel according to an embodiment of the inventive concept; Figure 4 According to the embodiment of the invention Figure 3 A sectional view taken along line II'; Figure 5 is a view schematically illustrating optical characteristics of a control layer according to an embodiment of the inventive concept.

[0066] Figure 3 yes Figure 1AAn enlarged view of a portion of the display region DA shown in FIG. 1. Three types of pixel regions PXA-R, PXA-G, and PXA-B are mainly shown. In Figure 3 The three types of pixel regions PXA-R, PXA-G, and PXA-B shown in FIG. 1 can be repeatedly arranged throughout the entire display region DA. In the present specification, a pixel region refers to a region through which light actually emitted to the outside by passing through the upper display substrate 200.

[0067] Light-shielding regions NPXA are provided around the first to third pixel regions PXA-R, PXA-G, and PXA-B. The first to third pixel regions PXA-R, PXA-G, and PXA-B and the light-shielding regions NPXA can be substantially defined on the upper display substrate 200.

[0068] In Figure 3 The first to third pixel regions PXA-R, PXA-G, and PXA-B having the same area in the plane are exemplarily shown in FIG. 1, but the inventive concept is not limited thereto. In an embodiment, the first to third pixel regions PXA-R, PXA-G, and PXA-B can have different areas, or at least two areas can be different from each other. Further, although the first to third pixel regions PXA-R, PXA-G, and PXA-B having rounded corner regions in the plane are shown, the inventive concept is not limited thereto. In an embodiment, the first to third pixel regions PXA-R, PXA-G, and PXA-B in the plane can have another polygonal form.

[0069] One of the first to third pixel regions PXA-R, PXA-G, and PXA-B provides first color light having a wavelength band of a first color to a user, another provides second color light having a wavelength band of a second color different from the first color to the user, and the remaining one provides third color light having a wavelength band of a third color different from the first and second colors to the user.

[0070] According to an embodiment of the inventive concept, the first pixel region PXA-R provides red light, the second pixel region PXA-G provides green light, and the third pixel region PXA-B provides blue light. In the present embodiment, the source light can be blue light as the third color light. The source light can be generated in a light source such as a backlight unit, or can be generated in a display device such as a light emitting diode.

[0071] The light-shielding area NPXA sets boundaries of the first to third pixel areas PXA-R, PXA-G, and PXA-B to prevent or substantially prevent color mixing between the first to third pixel areas PXA-R, PXA-G, and PXA-B. In addition, the light-shielding area NPXA blocks the source light so that the source light is not provided to the user.

[0072] Referring to Figure 4 The display panel DP includes a lower display substrate 100 and an upper display substrate 200.

[0073] The lower display substrate 100 includes a first base substrate BS1, a circuit element layer DP-CL, a display element layer DP-OLED, and a cover layer CY.

[0074] The first base substrate BS1 can include a synthetic resin substrate or a glass substrate. The circuit element layer DP-CL includes circuit elements and at least one insulating layer. The circuit elements include a signal line and a pixel circuit PXC, etc., as illustrated in FIG. 1. The circuit element layer DP-CL can be formed through a formation process of an insulating layer, a semiconductor layer, and a conductive layer by coating, deposition, etc., and a patterning process of the insulating layer, the semiconductor layer, and the conductive layer by a photolithography process. In the present specification, the first base substrate BS1 can be described as a lower base substrate. Figure 2B

[0075] The circuit element layer DP-CL can include a buffer film BFL, a first insulating layer 10, a second insulating layer 20, a third insulating layer 30, and a first to third drive transistors T2-1, T2-2, and T2-3. The first and second insulating layers 10 and 20 according to the inventive concept can be inorganic films, and the third insulating layer 30 can be an organic film.

[0076] The first drive transistor T2-1 includes a first semiconductor pattern OSP1, a first control electrode GE1, a first input electrode DE1, and a first output electrode SE1. The second drive transistor T2-2 includes a second semiconductor pattern OSP2, a second control electrode GE2, a second input electrode DE2, and a second output electrode SE2. The third drive transistor T2-3 includes a third semiconductor pattern OSP3, a third control electrode GE3, a third input electrode DE3, and a third output electrode SE3.

[0077] The first to third semiconductor patterns OSP1, OSP2, and OSP3 are disposed on the buffer film BFL disposed on the first base substrate BS1. The first insulating layer 10 covers the first to third semiconductor patterns OSP1, OSP2, and OSP3 and is disposed on the buffer film BFL.

[0078] ​The first, second, and third control electrodes GE1, GE2, and GE3 are stacked with the first, second, and third semiconductor patterns OSP1, OSP2, and OSP3, respectively, and are disposed on the first insulating layer 10. The second insulating layer 20 covers the first, second, and third control electrodes GE1, GE2, and GE3, and is disposed on the first insulating layer 10.

[0079] The first input electrode DE1 and the first output electrode SE1 are disposed on the second insulating layer 20. Although not shown in the drawings, the first input electrode DE1 and the first output electrode SE1 can be connected to the first semiconductor pattern OSP1 through a first via hole penetrating the first insulating layer 10 and a second via hole penetrating the second insulating layer 20, respectively.

[0080] The second input electrode DE2 and the second output electrode SE2 are disposed on the second insulating layer 20. Although not shown in the drawings, the second input electrode DE2 and the second output electrode SE2 can be connected to the second semiconductor pattern OSP2 through a fourth via hole penetrating the first insulating layer 10 and a fifth via hole penetrating the second insulating layer 20, respectively.

[0081] The third input electrode DE3 and the third output electrode SE3 are disposed on the second insulating layer 20. Although not shown in the drawings, the third input electrode DE3 and the third output electrode SE3 can be connected to the third semiconductor pattern OSP3 through a seventh via hole penetrating the first insulating layer 10 and an eighth via hole penetrating the second insulating layer 20, respectively.

[0082] The third insulating layer 30 covers the first to third input electrodes DE1, DE2, and DE3 and the first to third output electrodes SE1, SE2, and SE3, and is disposed on the second insulating layer 20. The display element layer DP-OLED can be disposed on the third insulating layer 30.

[0083] The display element layer DP-OLED includes first to third light emitting elements OLED-B1, OLED-B2, and OLED-B3. The first to third light emitting elements OLED-B1, OLED-B2, and OLED-B3 can be stacked with the first to third pixel areas PXA-R, PXA-G, and PXA-B, respectively. According to an embodiment of the inventive concept, each of the first to third light emitting elements OLED-B1, OLED-B2, and OLED-B3 can include an organic light emitting element that generates first color light corresponding to blue.

[0084] The first light emitting element OLED-B1 includes a first sub-electrode AE1, a second electrode CE, a first hole control layer HCL1, a first electron control layer ECL1, and a first emission layer ENL1. The first sub-electrode AE1 is disposed on the third insulating layer 30. The first sub-electrode AE1 is connected to the first output electrode SE1 through a third via hole passing through the third insulating layer 30. An emission opening part OM is defined in the pixel definition layer PDL. Hereinafter, in the present specification, the emission opening part OM refers to an area through which light is emitted from the light emitting element.

[0085] The first hole control layer HCL1 can include a hole transport layer, and can further include a hole injection layer. The first emission layer ENL1 is disposed on the first hole control layer HCL1. The first emission layer ENL1 can be disposed in an area corresponding to the emission opening part OM. The first emission layer ENL can output a first color light. The first electron control layer ECL1 is disposed on the first emission layer ENL. The first electron control layer ECL1 can include an electron transport layer, and can further include an electron injection layer. The second light emitting element OLED-B2 includes a second sub-electrode AE2, the second electrode CE, a second hole control layer HCL2, a second electron control layer ECL2, and a second emission layer ENL2. The second sub-electrode AE2 disposed on the third insulating layer 30 is connected to the second output electrode SE2 through a sixth via hole. The second hole control layer HCL2 can be integrally disposed with the first hole control layer HCL1, and the second electron control layer ECL2 can be integrally disposed with the first electron control layer ECL1.

[0086] The third light emitting element OLED-B3 includes a third sub-electrode AE3, the second electrode CE, a third hole control layer HCL3, a third electron control layer ECL3, and a third emission layer ENL3. The third sub-electrode AE3 disposed on the third insulating layer 30 is connected to the third output electrode SE3 through a ninth via hole. The third hole control layer HCL3 can be integrally disposed with the first hole control layer HCL1, and the third electron control layer ECL3 can be integrally disposed with the first electron control layer ECL1.

[0087] The structures of the second light emitting element OLED-B2 and the third light emitting element OLED-B3 can be substantially the same as that of the first light emitting element OLED-B1.

[0088] According to an embodiment of the inventive concept, the first to third emission layers ENL1, ENL2, and ENL3 can be disposed in an integrated shape. That is, the first to third emission layers ENL1, ENL2, and ENL3 can be integrally disposed on the first to third sub-electrodes AE1, AE2, and AE3. Further, the second electrode CE can be disposed in an integrated shape, and can be disposed on the first to third emission layers ENL1, ENL2, and ENL3.

[0089] A cover layer CY can be provided on the second electrode CE. The cover layer CY can be provided as an insulating layer including an organic material or an inorganic material. In one embodiment, the cover layer CY can be omitted.

[0090] The upper display substrate 200 includes a second base substrate BS2, a light-blocking member BM, a color filter layer FY, a light control layer (also referred to as a color control layer) CCL, a low-refractive layer LY, and a plurality of spacers CS1, CS2, and CS3.

[0091] The second base substrate BS2 includes a synthetic resin substrate or a glass substrate, and can face the first base substrate BS1 in the third direction DR3. In this specification, the second base substrate BS2 can be described as an upper base substrate.

[0092] The light-blocking member BM overlaps the light-blocking region NPXA in a plan view, and can be provided on the second base substrate BS2. As an example, the light-blocking member BM can be directly provided on the second base substrate BS2.

[0093] The color filter layer FY can include first to third color filters CF1, CF2, and CF3. The first to third color filters CF1, CF2, and CF3 can overlap the first to third pixel regions PXA-R, PXA-G, and PXA-B, respectively. In one example, each of the first to third color filters CF1, CF2, and CF3 can partially overlap the light-blocking region NPXA.

[0094] The first to third color filters CF1 to CF3 can receive light transmitted through the light control layer CCL and transmit the light to the second base substrate BS2.

[0095] In more detail, the first color filter CF1 is provided with a second color corresponding to red, and can transmit light of the second color. The first color filter CF1 can receive light of the second color from the light control layer CCL, and can emit the light of the second color to the first pixel region PXA-R.

[0096] The second color filter CF2 is provided with a third color corresponding to green, and can transmit light of the third color. The second color filter CF2 can receive light of the third color from the light control layer CCL, and can emit the light of the third color to the second pixel region PXA-G.

[0097] The third color filter CF3 is provided with a first color corresponding to blue, and can transmit light of the first color. The third color filter CF3 can receive light of the first color from the light control layer CCL, and can emit the light of the first color to the third pixel region PXA-B.

[0098] The light control layer CCL can include a luminescent body disposed on the color filter layer FY, the luminescent body converting first color light emitted from the display element layer DP-OLED to emit the converted light as light of a color different from the first color.

[0099] The light control layer CCL includes a first conversion portion CCF1, a second conversion portion CCF2, and a transmission portion CCF3. The first conversion portion CCF1 converts first color light emitted by a portion of the first light emitting layer ENL1 corresponding to a portion of the first sub-electrode AE1 exposed by the first light emitting opening portion, and outputs the converted light as second color light different from the first color. The first conversion portion CCF1 can emit the second color light toward the first color filter CF1.

[0100] The second conversion portion CCF2 converts first color light emitted by a portion of the second light emitting layer ENL2 corresponding to a portion of the second sub-electrode AE2 exposed by the second light emitting opening portion, and outputs the converted first color light as third color light different from the first color and the second color. The second conversion portion CCF2 can emit the third color light toward the second color filter CF2.

[0101] The transmission portion CCF3 can transmit first color light emitted by a portion of the third light emitting layer ENL3 corresponding to a portion of the third sub-electrode AE3 exposed by the third light emitting opening portion. The transmission portion CCF3 can emit the first color light toward the third color filter CF3.

[0102] In an embodiment, referring to Figure 5 , the first luminescent body EP-R converts first color light (B light) as blue light and emits second color light (R light) as red light, and the second luminescent body EP-G converts the first color light (B light) and emits third color light (G light) as green light. The transmission portion CCF3 can be a portion that does not include a luminescent body. The transmission portion CCF3 can be a portion that transmits the first color light.

[0103] In addition, the first conversion portion CCF1, the second conversion portion CCF2, the third conversion portion, and the CCF3 can include a base resin BR. The base resin BR can be a polymer resin. For example, the base resin BR can be an acrylic resin, a polyurethane resin, a silicone resin, an epoxy resin, or the like. The base resin BR can be a transparent resin.

[0104] In addition, each of the first conversion part CCF1, the second conversion part CCF2, and the transmission part CCF3 can further include scattering particles OL. In an embodiment, the scattering particles OL can be TiO2 or silica-based nanoparticles. The scattering particles OL in the first conversion part CCF1 and the second conversion part CCF2 can scatter light emitted from the light emitter and can emit the scattered light to the outside of the conversion part. In addition, in the case of transmitting the provided light as it is, the scattering particles OL in the transmission part CCF3 can scatter the provided light and emit it to the outside.

[0105] In an embodiment, the first light emitter EP-R and the second light emitter EP-G included in the color control layer CCL can be a fluorescent substance or a quantum dot. In other words, in an embodiment, the color control layer CCL can include at least one of a fluorescent substance and a quantum dot as the light emitters EP-R and EP-G.

[0106] For example, the fluorescent substance used as the first light emitter EP-R and the second light emitter EP-G can be an inorganic fluorescent substance. In the display panel DP according to an embodiment, the fluorescent substance used as the first light emitter EP-R and the second light emitter EP-G can be a red fluorescent substance and a green fluorescent substance.

[0107] The green fluorescent substance can include at least one selected from the group consisting of YBO3:Ce 3+ ,Tb 3+ , BaMgAl 10 O 17 :Eu 2+ ,Mn 2+ ,(Sr,Ca,Ba)(Al,Ga)2S4:Eu 2+ ; ZnS:Cu,Al, Ca8Mg(SiO4)4Cl2:Eu 2+ ,Mn 2+ ; Ba2SiO4:Eu 2+ ;(Ba,Sr)2SiO4:Eu 2+ ; Ba2(Mg,Zn)Si2O7:Eu 2+ ;(Ba,Sr)Al2O4:Eu 2+ ,Sr2Si3O8·2SrCl2:Eu 2+ .

[0108] The red fluorescent substance can include at least one selected from the group consisting of (Sr,Ca,Ba,Mg)P2O7:Eu 2+ ,Mn 2+ ,CaLa2S4:Ce 3+ ; SrY2S4:Eu 2+ ,(Ca,Sr)S:Eu 2+ ,SrS:Eu2+ Y2O3:Eu 3+ , Bi 3+ YVO4:Eu 3+ , Bi 3+ Y2O2S:Eu 3+ , Bi 3+ Y2O2S:Eu 3+ at least one selected from the group consisting of Y2O3:Eu

[0109] However, the kind of fluorescent substance used in the color control layer CCL is not limited to the materials described above. In other words, the fluorescent substance can use other known fluorescent substances in addition to using the fluorescent substance materials described above.

[0110] In other embodiments, the first emitter EP-R and the second emitter EP-G included in the color control layer CCL can be quantum dots. The quantum dots can be formed of a II-VI compound, a III-V compound, a IV-VI compound, a IV element, a IV compound, or any combination thereof.

[0111] The II-VI compound can be selected from the group consisting of a binary compound, a ternary compound, and a quaternary compound, the binary compound being selected from the group consisting of CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, MgS, and any mixture thereof; the ternary compound being selected from the group consisting of AgInS, CuInS, CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe, MgZnS, and any mixture thereof; the quaternary compound being selected from the group consisting of HgZnTeS, CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe, and any mixture thereof.

[0112] The III-V compound can be selected from the group consisting of binary compounds, ternary compounds, and quaternary compounds, the binary compounds being selected from the group consisting of GaN, GaP, GaAs, GaSb, AIN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, and any mixture thereof; the ternary compounds being selected from the group consisting of GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InNP, InNAs, InNSb, InPAs, InPSb, and any mixture thereof; the quaternary compounds being selected from the group consisting of GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb, and any mixture thereof.

[0113] The IV-VI compound can be selected from the group consisting of binary compounds, ternary compounds, and quaternary compounds, the binary compounds being selected from the group consisting of SnS, SnSe, SnTe, PbS, PbSe, PbTe, and any mixture thereof; the ternary compounds being selected from the group consisting of SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe, and any mixture thereof; the quaternary compounds being selected from the group consisting of SnPbSSe, SnPbSeTe, SnPbSTe, and any mixture thereof. The Group IV element can be selected from the group consisting of Si, Ge, and mixtures thereof. The Group IV compound can be a binary compound selected from the group consisting of SiC, SiGe, and mixtures thereof.

[0114] In these cases, the binary compound, ternary compound, or quaternary compound can be present in the quantum dot at a substantially uniform concentration. Alternatively, the concentration of the binary compound, ternary compound, or quaternary compound in one portion of the quantum dot can be different from the concentration of the binary compound, ternary compound, or quaternary compound in another portion of the quantum dot.

[0115] In embodiments, the quantum dot can have a core-shell structure including a core and a shell surrounding the core. Alternatively, the luminescent body can have a core-shell structure in which one quantum dot surrounds another quantum dot. The interface of the core and the shell can have a concentration gradient in which the concentration of an element present in the shell decreases gradually toward the center.

[0116] The quantum dot can be a nano-sized particle. The quantum dot can have a full width at half maximum (FWHM) of an emission wavelength spectrum of about 45 nm or less, in an embodiment, about 40 nm or less, and in an embodiment, about 30 nm or less, and within this range, color purity and / or color reproducibility can be improved. In addition, light emitted by the quantum dot can be emitted in all directions, and thus, a wide viewing angle can be improved or implemented.

[0117] Further, the shape of the quantum dot can be a general shape known in the art, but is not limited to a specific shape. For example, the quantum dot can have a spherical shape, a conical shape, a multi-arm shape, a cubic nanoparticle shape, a nanotube shape, a nanowire shape, a nanofiber shape, or a nanoplatelet shape.

[0118] According to an embodiment of the inventive concept, the quantum dot can change the color of the emitted light according to the particle size. In an embodiment, when the first light emitter EP-R and the second light emitter EP-G are quantum dots, the particle size of the first light emitter EP-R and the particle size of the second light emitter EP-G can be different from each other. For example, the particle size of the first light emitter EP-R can be larger than the particle size of the second light emitter EP-G. In an embodiment, the first light emitter EP-R can emit light of a wavelength that is longer than the wavelength of light emitted by the second light emitter EP-G.

[0119] On the other hand, a portion of the first color light provided from the first light emitting element OLED-B1 can be transmitted to the outside as it is, without being converted by the first light emitter EP-R. If the first color filter CF1 is omitted, a portion of the first color light can be emitted to the outside through the second base substrate BS2. As a result, the first color light and the second color light can be partially mixed, such that it can degrade the display quality of the image.

[0120] However, according to an embodiment of the inventive concept, since the first color light transmitted through the first conversion part CCF1 is converted by the first color filter CF1, the first color light can not pass through the first color filter CF1 to the second base substrate BS2. Accordingly, the second color light emitted through the first conversion part CCF1 can be output through the second base substrate BS2 without being mixed with other colors. As a result, color visibility can be improved.

[0121] Referring again to Figure 4 , the low-refractive layer LY can be disposed between the light control layer CCL and the color filter layer FY.

[0122] According to embodiments of the inventive concept, the refractive index of the light control layer CCL can be higher than the refractive index of the low-refraction layer LY. That is, the refractive index of the base resin BR included in the first conversion part CCF1, the second conversion part CCF2, and the transmission part CCF3 can be higher than the refractive index of the low-refraction layer LY. Due to the difference in refractive index between the low-refraction layer LY and the light control layer CCL, a portion of the light output from the first conversion part CCF1, the second conversion part CCF2, and the transmission part CCF3 can be totally reflected at the interface of the low-refraction layer LY. As a result, the totally reflected light can be referred to as a ghost light. Figure 5 The described scattering particles OL are scattered again and can be emitted to the outside. As described above, by the low-refraction layer LY, the characteristics of the light emitted from the first conversion part CCF1, the second conversion part CCF2, and the transmission part CCF3 can be improved.

[0123] Further, as described above with reference to Figure 1B The internal space GP can be provided between the lower display substrate 100 and the upper display substrate 200 spaced apart by the sealing agent SLM, for example. The first conversion part CCF1, the second conversion part CCF2, and the transmission part CCF3 of the upper display substrate 200 can be spaced apart from the cover layer CY of the lower display substrate 100 at a certain interval (e.g., a predetermined interval) in the third direction DR3, for example. If the cover layer CY is omitted, the first conversion part CCF1, the second conversion part CCF2, and the transmission part CCF3 can face the light emitting element.

[0124] The separation distance in the third direction DR3 between the first conversion part CCF1, the second conversion part CCF2, and the transmission part CCF3 and the cover layer CY should be kept constant. Here, the separation distance in the third direction DR3 between the first conversion part CCF1, the second conversion part CCF2, and the transmission part CCF3 and the cover layer CY will be described as an internal separation distance Dk.

[0125] If the internal separation distance Dk is greater than or less than the set length, color mixing can occur in the image output from the display panel DP, or visibility can be degraded. For example, if it is assumed that the display panel DP emits an image only through the first pixel area PXA-R, when the internal separation distance Dk is kept normal, the second color light is emitted only through the first pixel area PXA-R, and no light is emitted through the second pixel area PXA-G and the third pixel area PXA-B.

[0126] However, the internal separation distance Dk can change due to various reasons such as movement of the display panel DP. For example, when the internal separation distance Dk increases due to movement of the display panel DP, the first color light emitted from the first light emitting element OLED-B1 can be partially transmitted to the second conversion part CCF2 in addition to being transmitted to the first conversion part CCF1. In this case, color mixing in which the second color light emitted through the first conversion part CCF1 and the third color light emitted through the second conversion part CCF2 are mixed can occur. As a result, the overall visibility of the display panel DP can be deteriorated.

[0127] According to an embodiment of the inventive concept, a plurality of spacers CS1, CS2, and CS3 are disposed between the upper display substrate 200 and the lower display substrate 100 so that a separation space located between the upper display substrate 200 and the lower display substrate 100 can be provided. Here, the separation space can be substantially the same as the internal space GP shown in FIG. 1, and for example, can be provided as an air layer. As a result, the internal separation distance Dk between the upper display substrate 200 and the lower display substrate 100 spaced apart by the spacers CS1, CS2, and CS3 can be maintained constant. Each of the plurality of spacers CS1, CS2, and CS3 can be provided with a thickness of the internal separation distance Dk. Figure 1B

[0128] Further, each of the spacers CS1, CS2, and CS3 can not be overlapped with the light emission opening part OM. Since the spacers CS1, CS2, and CS3 are not overlapped with the light emission opening part OM, light emitted through the light emission opening part OM is not reflected by the spacers CS1, CS2, and CS3.

[0129] More specifically, the spacers CS1, CS2, and CS3 include a first spacer CS1, a second spacer CS2, and a third spacer CS3. As shown in FIG. 2, the first spacer CS1 to the third spacer CS3 can be partially overlapped with the first pixel area to the third pixel area PXA-R, PXA-G, and PXA-B, respectively. Further, the first spacer CS1 to the third spacer CS3 can be partially overlapped with the light shielding area NPXA (i.e., the light shielding member BM). Figure 4

[0130] According to the inventive concept, although the first spacer CS1 to the third spacer CS3 corresponding to the first pixel area to the third pixel area PXA-R, PXA-G, and PXA-B are shown, one spacer corresponding to one pixel area can be provided.

[0131] ​​The first spacer CS1 is disposed between the first conversion part CCF1 and the cover layer CY. In an embodiment, one end of the first spacer CS1 directly contacts the first conversion part CCF1, and the other end of the first spacer CS1 can directly contact the cover layer CY. As another example, the first spacer CS1 is disposed between the first conversion part CCF1 and the first light emitting element OLED-B1. That is, when the cover layer CY is omitted, one end of the first spacer CS1 can directly contact the first conversion part CCF1, and the other end of the first spacer CS1 can directly contact the second electrode CE of the first light emitting element OLED-B1.

[0132] The second spacer CS2 is disposed between the second conversion part CCF2 and the cover layer CY. In an embodiment, one end of the second spacer CS2 directly contacts the second conversion part CCF2, and the other end of the second spacer CS2 can directly contact the cover layer CY. As another example, the second spacer CS2 is disposed between the second conversion part CCF2 and the second light emitting element OLED-B2. That is, when the cover layer CY is omitted, one end of the second spacer CS2 can directly contact the second conversion part CCF2, and the other end of the second spacer CS2 can directly contact the second electrode CE of the second light emitting element OLED-B2.

[0133] The third spacer CS3 is disposed between the transmission part CCF3 and the cover layer CY. In an embodiment, one end of the third spacer CS3 directly contacts the transmission part CCF3, and the other end of the third spacer CS3 can directly contact the cover layer CY. As another example, the third spacer CS3 is disposed between the transmission part CCF3 and the third light emitting element OLED-B3. That is, when the cover layer CY is omitted, one end of the third spacer CS3 can directly contact the transmission part CCF3, and the other end of the third spacer CS3 can directly contact the second electrode CE of the third light emitting element OLED-B3.

[0134] In addition, each of the first to third spacers CS1 to CS3 according to the embodiment of the inventive concept can be disposed to be black. As a result, since the first to third spacers CS1 to CS3 are disposed to be black, it is possible to prevent or substantially prevent color mixing of light emitted from the first to third light emitting elements OLED-B1 to OLED-B3.

[0135] Figure 6 is a cross-sectional view of a pixel region of a display panel according to another embodiment of the inventive concept.

[0136] As compared with the display panel DP shown in Figure 4 Figure 6 ​The display panel DPa shown in FIG. 1A is added with the filler IF configuration, and the remaining structures can be substantially the same. Thus, for ease of explanation, further description of the remaining components is omitted.

[0137] Referring to Figure 6 , the filler IF can be included in the internal space GP. In an embodiment, the filler IF can be completely filled in the internal space GP. Due to the filler IF filled in the internal space GP, the internal separation distance Dk between the first conversion part CCF1, the second conversion part CCF2, and the transmission part CCF3 and the cover layer CY can be kept constant.

[0138] In addition, the filler IF can be provided as a transparent material. That is, the filler IF can transmit light emitted from the first to third light emitting elements OLED-B1 to OLED-B3.

[0139] Figure 7 is a plan view of a pixel area of a display panel according to another embodiment of the inventive concept.

[0140] In an embodiment, in Figure 3 the first to third pixel areas PXA-R, PXA-G, and PXA-B shown in FIG. 1A can be sequentially and alternately arranged along the first direction DR1. In addition, each of the first to third pixel areas PXA-R, PXA-G, and PXA-B can be arranged as a pixel area emitting the same color of light along the second direction DR2. For example, the first pixel area PXA-R can be arranged in the second direction DR2 and can be provided as a plurality of first pixel areas for emitting the second color of light. The second pixel area PXA-G can be arranged in the second direction DR2 and can be provided as a plurality of second pixel areas for emitting the third color of light. The third pixel area PXA-B can be arranged in the second direction DR2 and can be provided as a plurality of third pixel areas for emitting the first color of light.

[0141] In an embodiment, as shown in Figure 7 , the first to third pixel areas PXA-R1, PXA-G1, and PXA-B1 are arranged in a first row, and the first to third pixel areas PXA-R2, PXA-G2, and PXA-B2 are arranged in a second row.

[0142] According to another embodiment of the inventive concept, a first spacer CS1a can be provided between the first pixel areas arranged along the second direction DR2. For example, the first spacer CS1a can be provided between the first pixel area PXA-R1 and the first pixel area PXA-R2.

[0143] The second spacer CS2a may be disposed between the second pixel regions arranged along the second direction DR2. For example, the second spacer CS2a may be disposed between the second pixel region PXA-G1 and the second pixel region PXA-G2.

[0144] The third spacer CS3a may be disposed between the third pixel regions arranged along the second direction DR2. For example, the third spacer CS3a may be disposed between the third pixel region PXA-B1 and the third pixel region PXA-B2.

[0145] According to an embodiment of the inventive concept, maintaining Figure 4 A plurality of spacers having a constant internal separation distance Dk as shown in FIG are provided between pixel regions. Figure 7 Each of the plurality of spacers shown in may overlap the light blocking area NPXA.

[0146] Figure 8 is a cross-sectional view of a display panel according to another embodiment of the inventive concept.

[0147] and Figure 4 Compared with the display panel DP shown in Figure 8 In the display panel DPb shown in FIG, the structure of the spacer is modified, and the structure of the remaining configuration may be substantially the same. Therefore, for ease of explanation, further description of the remaining structure is omitted, and the structure of the spacer is mainly described.

[0148] Reference Figure 8 , the lower display substrate 100 and the upper display substrate 200 may be spaced apart from each other in the third direction DR3 by the spacer CSa.

[0149] According to an embodiment of the inventive concept, the first conversion portion CCF1, the second conversion portion CCF2, and the transmissive portion CCF3 may be spaced apart from each other on a plane. A first space may be provided between the first conversion portion CCF1 and the second conversion portion CCF2, which are spaced apart from each other along the first direction DR1. A second space may be provided between the second conversion portion CCF2 and the transmissive portion CCF3, which are spaced apart from each other along the first direction DR1. A third space may be provided between the transmissive portion CCF3 and the first conversion portion CCF1, which are spaced apart from each other along the first direction DR1.

[0150] Specifically, the spacer CSa may be provided in at least one of the first to third spaces and may be provided in a shape extending from the light blocking member BM. That is, the spacer CSa may be provided between two adjacent pixel regions emitting light of different colors among the first to third pixel regions PXA-R, PXA-G, and PXA-B.

[0151] Further, the spacers CSa can overlap the light-blocking area NPXA. One end of each of the spacers CSa can be connected to the light-blocking member BM, and the other end of each of the spacers CSa can be connected to the lower display substrate 100.

[0152] In addition, the first to third color filters CF1 to CF3 can be separated by the spacers CSa. For example, the first color filter CF1 and the second color filter CF2 can be separated by any one of the spacers CSa, and the second color filter CF2 and the third color filter CF3 can be separated by another one of the spacers CSa.

[0153] According to an embodiment of the inventive concept, in a thickness direction of the upper display substrate 200, a thickness of each of the spacers CSa can be greater than a thickness of each of the first to third color filters CF1 to CF3. Further, in the thickness direction of the upper display substrate 200, the thickness of each of the spacers CSa can be greater than a thickness of each of the first to third conversion portions CCF1 to CCF3. That is, each of the spacers CSa can be connected to the light-blocking member BM through two adjacent conversion portions. As a result, the thickness of each of the spacers CSa can be greater than a sum of the thickness of the conversion portions and the thickness of the color filters.

[0154] According to the above description, since each of the spacers CSa passes through the conversion portions and is connected to the light-blocking member BM, light emitted from the first to third light emitting elements OLED-B1, OLED-B2, and OLED-B3 of the lower display substrate 100 can be transmitted to the first to third conversion portions CCF1 to CCF3 without being mixed.

[0155] According to an embodiment of the inventive concept, a plurality of spacers can connect the light control layer with the lower display substrate. Accordingly, an internal separation distance between the light control layer and the lower display substrate can be kept constant by the spacers.

[0156] Accordingly, since a phenomenon of mixing different colors of light is prevented or substantially prevented by the spacers, overall visibility of the display device can be improved.

[0157] While certain example embodiments of the inventive concept have been described, it will be understood that the inventive concept should not be limited to these example embodiments, but rather modifications and variations are possible within the spirit and scope of the inventive concept as defined by the appended claims.

Claims

1. A display panel comprising: an upper display substrate including a display area and a non-display area adjacent to the display area, wherein the display area includes first to third pixel areas and a light-shielding area adjacent to the first to third pixel areas; a lower display substrate including first to third light-emitting elements configured to emit first color light and respectively superposed with the first to third pixel areas; and a plurality of spacers superposed with the display area and arranged between the upper display substrate and the lower display substrate, wherein the upper display substrate includes: a base substrate; a light control layer on the base substrate and configured to convert the first color light to output light of a different color; and a color filter layer between the base substrate and the light control layer, wherein the upper display substrate and the lower display substrate are spaced apart from each other with the plurality of spacers therebetween, and wherein the plurality of spacers are disposed between the light control layer and the lower display substrate.

2. The display panel of claim 1, wherein, the light control layer includes: a first conversion portion including a first luminescent body configured to convert the first color light and emit second color light different from the first color light and superposed with the first pixel area; a second conversion portion including a second luminescent body configured to convert the first color light and emit third color light different from the first and second color light and superposed with the second pixel area; and a transmission portion configured to transmit the first color light and superposed with the third pixel area.

3. The display panel of claim 2, wherein, the plurality of spacers include: a first spacer between the first conversion portion and the first light-emitting element; a second spacer between the second conversion portion and the second light-emitting element; and a third spacer between the transmission portion and the third light-emitting element.

4. The display panel of claim 1, wherein, the lower display substrate includes a lower base substrate and a display element layer on the lower base substrate and including the first to third light-emitting elements and a pixel definition layer, wherein each of the first to third light-emitting elements includes a first electrode, a second electrode, and a light-emitting layer between the first and second electrodes, and the pixel definition layer includes an opening portion exposing at least a portion of the first electrode, and wherein the plurality of spacers are not superposed with the opening portion. 5.The display panel of claim 1, further comprising a filler configured to fill a separation space between the upper display substrate and the lower display substrate in which the plurality of spacers are arranged.

6. The display panel of claim 1, wherein, the lower display substrate further includes a cover layer covering the first to third light-emitting elements, wherein the plurality of spacers are between the light control layer and the cover layer.

7. The display panel of claim 1, wherein, the plurality of spacers are superposed with the light-shielding area.

8. The display panel of claim 7, wherein, the first to third pixel areas are sequentially and alternately arranged in a first direction, Each of the first to third pixel regions is arranged as a pixel region emitting light of the same color along a second direction intersecting the first direction. The plurality of spacers are located between two adjacent pixel regions among the pixel regions arranged along the second direction.

9. A display panel, comprising: an upper display substrate including a display region and a non-display region adjacent to the display region, wherein the display region includes first to third pixel regions and light-shielding regions adjacent to the first to third pixel regions; a lower display substrate including first to third light-emitting elements configured to emit light of a first color and respectively superposed with the first to third pixel regions; and a plurality of spacers superposed with the display region and arranged between the upper display substrate and the lower display substrate to provide a separation space between the upper display substrate and the lower display substrate, wherein the upper display substrate includes: a base substrate; a light control layer on the base substrate and configured to convert the light of the first color into light of a different color and emit the converted light of the first color; a color filter layer between the base substrate and the light control layer; and a light-shielding member superposed with the light-shielding regions and arranged between the base substrate and the light control layer, wherein the plurality of spacers have a structure extending from the light-shielding member in the separation space.

Images