Display device having light emitting area and transparent area

Abstract

A display device having a light emitting area and a transparent area is provided. The light emitting device may be disposed on the light emitting region of the device substrate. The transparent region of the device substrate may be spaced apart from the light emitting device. For example, an object located on a rear surface of the display device may be recognized by a user disposed on a front surface of the display device through a transparent area of the device substrate. At least one optical lens may be disposed between the light emitting device and a user. The correction lens may be disposed between the transparent region of the device substrate and the at least one optical lens. Each of the correction lenses may include a curved surface having a different shape than the at least one optical lens. Accordingly, in the display apparatus, the shape of an object recognized by a user through the transparent region of the device substrate does not deform.

Description

Technical Field

[0001] The present disclosure relates to a display apparatus, wherein a device substrate includes a light emitting region and a transparent region. Background Art

[0002] Typically, a display device provides an image to a user. For example, a display device may include multiple light-emitting devices. Each of the light-emitting devices may emit light of a specific color. For example, each of the light-emitting devices may include a light-emitting layer disposed between a first electrode and a second electrode.

[0003] At least one optical lens may be provided on the light-emitting device. Light emitted from each light-emitting device may be provided to a user through the at least one optical lens. Thus, the display device can provide a user with images of various shapes. For example, the display device can provide a user with a three-dimensional image using the at least one optical lens.

[0004] The light-emitting device may be supported by a device substrate. The display device may be a transparent display device. For example, the device substrate may include a transparent region spaced apart from the light-emitting device. A user positioned on the front surface of the display device can identify an object positioned on the rear surface of the display device through the transparent region of the device substrate. However, in the display device, external light passing through the transparent region may be refracted by at least one optical lens. As a result, the shape of an object identified by the user through the transparent region of the device may be distorted. Summary of the Invention

[0005] Accordingly, the present disclosure is directed to a display device that substantially obviates one or more problems due to limitations and disadvantages of the related art.

[0006] An advantage of the present disclosure is to provide a display device capable of reducing or preventing distortion of an object recognized by a user through a transparent area of ​​a device substrate.

[0007] Another benefit of the present disclosure is to provide a display device capable of correcting external light refracted by at least one optical lens.

[0008] Additional advantages, benefits, and features of the present disclosure will be set forth in part in the following description, and in part will become apparent to those skilled in the art upon examination of the following description, or may be learned from practice of the present disclosure. The objectives and other advantages of the present disclosure may be realized and achieved by the structures particularly pointed out in the written description and claims as well as in the accompanying drawings.

[0009] To achieve these and other advantages and in accordance with the purposes of the present disclosure, a display device is provided, as embodied and broadly described herein, including a device substrate. The device substrate includes a light-emitting region and a transparent region. A light-emitting device is disposed on the light-emitting region of the device substrate. A correction lens overlaps the transparent region of the device substrate. At least one optical lens is disposed on the light-emitting device and the correction lens. A surface of the correction lens opposite the at least one optical lens has a concave curved shape.

[0010] A surface of the at least one optical lens opposite to the device substrate may have a convex curved shape.

[0011] The device substrate includes a first surface and a second surface. The light emitting device may be disposed on the first surface of the device substrate. The correction lens may be disposed on the second surface of the device substrate. The second surface may be opposite to the first surface.

[0012] A surface of the correction lens facing the at least one optical lens may be in contact with the second surface of the device substrate.

[0013] A color filter insulating layer may be disposed between the light-emitting device and at least one optical lens. The color filter insulating layer may extend onto the transparent region of the device substrate. A color filter may be disposed between the light-emitting device and the color filter insulating layer. The color filter may overlap the light-emitting region. At least one optical lens may contact the color filter insulating layer.

[0014] The at least one optical lens may include a first lens region and a second lens region. The first lens region may overlap with the light emitting region. The second lens region may overlap with the transparent region. The width of the second lens region may be the same as or substantially the same as the width of the first lens region.

[0015] In another embodiment, a display device including a device substrate is provided. The device substrate includes a plurality of pixel regions. A light-emitting device and a correction structure are disposed on the device substrate. Each of the light-emitting devices is disposed over a light-emitting region of each pixel region. The correction structure includes a concave curved surface that overlaps with a transparent region of each pixel region. At least one optical lens is disposed over the light-emitting device and the correction structure. The correction structure includes a first surface facing the at least one optical lens and a second surface opposite the first surface. The concave curved surface is disposed on the second surface of the correction structure.

[0016] The surface of at least one optical lens may have a convex curved surface. The convex curved surface may have a different curvature from the concave curved surface.

[0017] The packaging structure may be disposed on the device substrate, the packaging structure may cover the light-emitting device, and the correction structure may be disposed between the packaging structure and the at least one optical lens.

[0018] The correction structure may extend over the light emitting area of ​​each pixel region.

[0019] The correction pattern may be disposed between the packaging structure and the correction structure. The correction pattern may contact the concave surface. The refractive index of each correction pattern may be less than the refractive index of the correction structure.

[0020] A surface of each correction pattern facing the package structure may be continuous with a surface of the correction structure facing the package structure.

[0021] The pixel lens may be disposed between the encapsulation structure and the correction structure. Each of the pixel lenses may overlap with the light-emitting region of each pixel region. The surface of each pixel lens facing the at least one optical lens may have a convex curved surface.

[0022] A surface of each pixel region facing the at least one optical lens may be in contact with the correction structure. The refractive index of the correction structure may be less than the refractive index of each pixel lens.

[0023] A surface of each pixel lens facing the encapsulation structure may be continuous with a surface of the correction structure facing the encapsulation structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this application. They illustrate embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. In the drawings:

[0025] Figure 1 is a view schematically illustrating a display device according to an embodiment of the present disclosure;

[0026] Figure 2 yes Figure 1 A magnified view of the K1 region in Figure 2;

[0027] Figure 3 is a diagram showing a circuit of a sub-pixel in a display device according to an embodiment of the present disclosure;

[0028] Figure 4 It is along Figure 2 The view taken from I-I';

[0029] Figures 5 to 10 is a view illustrating a display device according to another embodiment of the present disclosure. DETAILED DESCRIPTION

[0030] Hereinafter, by referring to the following detailed description of the accompanying drawings illustrating some embodiments of the present disclosure, details related to the above-mentioned benefits, technical configurations and operational effects of the embodiments of the present disclosure will be clearly understood. Here, the embodiments of the present disclosure are provided so that the technical spirit of the present disclosure can be satisfactorily conveyed to those skilled in the art, and therefore the present disclosure can be embodied in other forms and is not limited to the embodiments described below.

[0031] In addition, throughout the specification and drawings, the same or very similar elements may be denoted by the same reference numerals, and the lengths and thicknesses of layers and regions may be exaggerated for convenience. It will be understood that when a first element is referred to as being "on" a second element, although the first element may be disposed on the second element so as to contact the second element, a third element may be interposed between the first and second elements.

[0032] Here, terms such as "first" and "second" may be used to distinguish any one element from another element. However, without departing from the technical spirit of the present disclosure, the first element and the second element may be arbitrarily named according to the convenience of those skilled in the art.

[0033] The terms used in the specification of the present disclosure are used only to describe specific embodiments and are not intended to limit the scope of the present disclosure. For example, unless the context clearly indicates otherwise, an element described in the singular is intended to include a plurality of elements. In addition, in the specification of the present disclosure, it will be further understood that the terms "comprise" and "comprising" specify the presence of stated features, integers, steps, operations, elements, components and / or combinations thereof, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations.

[0034] Also, unless “directly” is used, the terms “connected” and “coupled” may include two components being “connected” or “coupled” via one or more other components located between the two components.

[0035] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the example embodiments belong. It will also be understood that terms such as those defined in commonly used dictionaries can be interpreted as having a meaning consistent with their meaning in the context of the relevant art and should not be interpreted in an idealized or overly formal sense unless expressly defined as such herein.

[0036] (Implementation Method)

[0037] Figure 1 is a view schematically illustrating a display device according to an embodiment of the present disclosure. Figure 2 yes Figure 1 Magnified view of the K1 region in . Figure 3 is a diagram illustrating a circuit of a sub-pixel in a display device according to an embodiment of the present disclosure. Figure 4 It is along Figure 2 The view taken from I-I'.

[0038] Reference Figures 1 to 4 A display device according to an embodiment of the present disclosure may include a display panel DP. The display panel DP may generate an image provided to a user. For example, a plurality of pixel areas PA may be provided in the display panel DP. Each of the pixel areas PA may realize various colors. For example, each of the pixel areas PA may include a plurality of sub-pixels SP. Various signals may be provided to each sub-pixel SP via signal wirings GL, DL, and PL. For example, the signal wirings GL, DL, and PL may include a gate line GL for applying a gate signal, a data line DL for applying a data signal, and a power supply voltage supply line PL for supplying a power supply voltage.

[0039] The gate lines GL may be electrically connected to a gate driver GD. The data lines DL may be electrically connected to a data driver DD. The gate driver GD and the data driver DD may be controlled by a timing controller TC. For example, the gate driver GD may receive a clock signal, a reset signal, and a start signal from the timing controller TC, and the data driver DD may receive digital video data and a source timing signal from the timing controller TC. The power supply voltage line PL may be electrically connected to a power supply unit PU.

[0040] The display panel DP may include a display area AA in which the pixel area PA is disposed, and a frame area BZ disposed outside the display area AA. The frame area BZ may be disposed outside the pixel area PA. For example, the display area AA may be surrounded by the frame area BZ. The gate driver GD, the data driver DD, the timing controller TC, and the power supply unit PU may be disposed outside the display area AA. For example, each of the signal wirings GL, DL, and PL may include an area disposed on the frame area BZ.

[0041] At least one of the gate driver GD, the data driver DD, the timing controller TC, and the power supply unit PU may be disposed on the bezel area BZ. For example, the display device according to an embodiment of the present disclosure may be a GIP (Gate in Panel) type display device in which the gate driver GD is formed on the bezel area BZ.

[0042] Each of the sub-pixels SP can display a specific color. For example, a driving circuit DC electrically connected to the light-emitting device 300 can be provided in each sub-pixel SP. The driving circuit DC of each sub-pixel SP can control the light-emitting device 300 of the corresponding sub-pixel SP based on the signals applied to the signal wirings GL, DL, and PL. For example, the driving circuit DC of each sub-pixel SP can supply a driving current corresponding to a data signal to the light-emitting device 300 of the corresponding sub-pixel SP based on a selection signal. The driving current supplied by the driving circuit DC of each sub-pixel SP can be maintained for one frame. For example, the driving circuit DC of each sub-pixel SP may include a first thin-film transistor TR1, a second thin-film transistor TR2, and a storage capacitor Cst.

[0043] The first thin-film transistor TR1 of each sub-pixel SP can transmit a data signal to the second thin-film transistor TR2 of the corresponding sub-pixel SP according to a gate signal. For example, the first thin-film transistor TR1 of each sub-pixel SP can function as a switching thin-film transistor. The first thin-film transistor TR1 of each sub-pixel SP may include a first semiconductor pattern, a first gate electrode, a first drain electrode, and a first source electrode. For example, the first gate electrode of each sub-pixel SP may be electrically connected to the corresponding gate line GL, and the first drain electrode of each sub-pixel SP may be electrically connected to the corresponding data line DL.

[0044] The first semiconductor pattern may include a semiconductor material. For example, the first semiconductor pattern may include low-temperature polysilicon (LTPS) or an oxide semiconductor such as IGZO. The first semiconductor pattern may include a first drain region, a first channel region, and a first source region. The first channel region may be disposed between the first drain region and the first source region. The first drain region and the first source region may have a resistance less than that of the first channel region. For example, the first drain region and the first source region may include a conductive region of an oxide semiconductor. The first channel region may be a region of a non-conductive oxide semiconductor.

[0045] The first gate electrode may be disposed on a portion of the first semiconductor pattern. For example, the first gate electrode may overlap with the first channel region of the first semiconductor pattern. The first drain region and the first source region of the first semiconductor pattern may be disposed outside the first gate electrode. The first gate electrode may include a conductive material. For example, the first gate electrode may include a metal such as aluminum (Al), chromium (Cr), copper (Cu), molybdenum (Mo), titanium (Ti), and tungsten (W). The first gate electrode may be spaced apart from the first semiconductor pattern. The first gate electrode may be insulated from the first semiconductor pattern. For example, the first drain region of the first semiconductor pattern may be electrically connected to the first source region of the first semiconductor pattern based on a signal applied to the first gate electrode.

[0046] The first drain electrode may include a conductive material. For example, the first drain electrode may include a metal such as aluminum (Al), chromium (Cr), copper (Cu), molybdenum (Mo), titanium (Ti), and tungsten (W). The first drain electrode may include a different material than the first gate electrode. For example, the first drain electrode may be disposed on a different layer from the first gate electrode. The first drain electrode may be electrically connected to the first drain region of the first semiconductor pattern. The first drain electrode may be insulated from the first gate electrode.

[0047] The first source electrode may include a conductive material. For example, the first source electrode may include a metal such as aluminum (Al), chromium (Cr), copper (Cu), molybdenum (Mo), titanium (Ti), and tungsten (W). The first source electrode may include a different material from the first gate electrode. The first source electrode may be disposed on a different layer from the first gate electrode. For example, the first source electrode may be disposed on the same layer as the first drain electrode. The first source electrode may include the same or substantially the same material as the first drain electrode. The first source electrode may be formed by the same process as the first drain electrode. For example, the first source electrode may be formed simultaneously with the first drain electrode. The first source electrode may be electrically connected to the first source region of the first semiconductor pattern. The first source electrode may be insulated from the first gate electrode.

[0048] The second thin film transistor TR2 of each sub-pixel SP can generate a driving current corresponding to the data signal. For example, the second thin film transistor TR2 of each sub-pixel SP can function as a driving thin film transistor. The second thin film transistor TR2 of each sub-pixel SP can include a second semiconductor pattern 221, a second gate electrode 223, a second drain electrode 225, and a second source electrode 227. For example, the second gate electrode 223 of each sub-pixel SP can be electrically connected to the first source electrode of the corresponding sub-pixel SP, and the second drain electrode 225 of each sub-pixel SP can be electrically connected to the corresponding power supply voltage line PL.

[0049] The second semiconductor pattern 221 may include a semiconductor material. For example, the second semiconductor pattern 221 may include low-temperature polysilicon (LTPS) or an oxide semiconductor such as IGZO. The second semiconductor pattern 221 may include the same or substantially the same material as the first semiconductor pattern. The second semiconductor pattern 221 may be provided on the same layer as the first semiconductor pattern. The second semiconductor pattern 221 may be formed using the same or substantially the same process as the first semiconductor pattern. For example, the second semiconductor pattern 221 may be formed simultaneously with the first semiconductor pattern.

[0050] The second semiconductor pattern 221 may include a second drain region, a second channel region, and a second source region. The second channel region may be disposed between the second drain region and the second source region. The second drain region and the second source region may have a resistance lower than that of the second channel region. For example, the second drain region and the second source region may include conductive regions of an oxide semiconductor. The second channel region may be a region of the oxide semiconductor that is not conductive.

[0051] The second gate electrode 223 may be disposed on a portion of the second semiconductor pattern 221. For example, the second gate electrode 223 may overlap the second channel region of the second semiconductor pattern 221. The second drain region and the second source region of the second semiconductor pattern 221 may be disposed outside the second gate electrode 223. The second gate electrode 223 may include a conductive material. For example, the second gate electrode 223 may include a metal such as aluminum (Al), chromium (Cr), copper (Cu), molybdenum (Mo), titanium (Ti), and tungsten (W). The second gate electrode 223 may be spaced apart from the second semiconductor pattern 221. The second gate electrode 223 may be insulated from the second semiconductor pattern 221. For example, the second channel region of the second semiconductor pattern 221 may have a conductivity corresponding to the voltage applied to the second gate electrode 223.

[0052] The second gate electrode 223 may include the same or substantially the same material as the first gate electrode. The second gate electrode 223 may be disposed on the same layer as the first gate electrode. The second gate electrode 223 may be formed using the same or substantially the same process as the first gate electrode. For example, the second gate electrode 223 may be formed simultaneously with the first gate electrode.

[0053] The second drain electrode 225 may include a conductive material. For example, the second drain electrode 225 may include a metal such as aluminum (Al), chromium (Cr), copper (Cu), molybdenum (Mo), titanium (Ti), and tungsten (W). The second drain electrode 225 may include a different material from the second gate electrode 223. For example, the second drain electrode 225 may be provided on a different layer from the second gate electrode 223. The second drain electrode 225 may be electrically connected to the second drain region of the second semiconductor pattern 221. The second drain electrode 225 may be insulated from the second gate electrode 223.

[0054] The second drain electrode 225 may be disposed on the same layer as the first drain electrode. The second drain electrode 225 may include the same or substantially the same material as the first drain electrode. The second drain electrode 225 may be formed using the same or substantially the same process as the first drain electrode. For example, the second drain electrode 225 may be formed simultaneously with the first drain electrode.

[0055] The second source electrode 227 may include a conductive material. For example, the second source electrode 227 may include a metal such as aluminum (Al), chromium (Cr), copper (Cu), molybdenum (Mo), titanium (Ti), and tungsten (W). The second source electrode 227 may include a material different from that of the second gate electrode 223. The second source electrode 227 may be provided on a different layer from that of the second gate electrode 223. For example, the second source electrode 227 may be provided on the same layer as the second drain electrode 225. The second source electrode 227 may include the same or substantially the same material as that of the second drain electrode 225. The second source electrode 227 may be formed by the same or substantially the same process as that of the second drain electrode 225. For example, the second source electrode 227 may be formed simultaneously with the second drain electrode 225.

[0056] The second source electrode 227 may be electrically connected to the second source region of the second semiconductor pattern 221. The second source electrode 227 may be insulated from the second gate electrode 223. The second source electrode 227 may be spaced apart from the second drain electrode 225.

[0057] The storage capacitor Cst of each sub-pixel SP can maintain the voltage applied to the second gate electrode 223 of the corresponding sub-pixel SP for one frame. For example, the storage capacitor Cst of each sub-pixel SP can be electrically connected to the second gate electrode 223 and the second source electrode 227 of the corresponding sub-pixel SP. The storage capacitor Cst of each sub-pixel SP can have a stacked structure of capacitor electrodes. For example, the storage capacitor Cst of each sub-pixel SP can include a first capacitor electrode electrically connected to the second gate electrode 233 of the corresponding sub-pixel SP and a second capacitor electrode electrically connected to the second source electrode 227 of the corresponding sub-pixel SP.

[0058] The storage capacitor Cst of each subpixel SP can be formed using the same process as that used to form the first thin-film transistor TR1 and the second thin-film transistor TR2 in the corresponding subpixel SP. For example, the first capacitor electrode of each subpixel SP can be provided on the same layer as the second gate electrode 223 of the corresponding subpixel SP, and the second capacitor electrode of each subpixel SP can be provided on the same layer as the second source electrode 227 of the corresponding subpixel SP. The first capacitor electrode of each subpixel SP can include the same or substantially the same material as the second gate electrode 223 of the corresponding subpixel SP, and the second capacitor electrode of each subpixel SP can include the same or substantially the same material as the second source electrode 227 of the corresponding subpixel SP. The first capacitor electrode of each subpixel SP can be formed using the same or substantially the same process as the second gate electrode 223 of the corresponding subpixel SP, and the second capacitor electrode of each subpixel SP can be formed using the same or substantially the same process as the second source electrode 227 of the corresponding subpixel SP. For example, the first capacitor electrode of each subpixel SP can be formed simultaneously with the second gate electrode 223 of the corresponding subpixel SP, and the second capacitor electrode of each subpixel SP can be formed simultaneously with the second source electrode 227 of the corresponding subpixel SP. Therefore, in the display device according to the embodiment of the present disclosure, the process of forming the driving circuit DC in each sub-pixel SP can be simplified.

[0059] The light emitting device 300 and the driving circuit DC of each sub-pixel SP may be disposed on a device substrate 100. For example, the device substrate 100 may support the light emitting device 300 and the driving circuit DC of each sub-pixel SP. The device substrate 100 may include an insulating material. For example, the device substrate 100 may include glass or plastic.

[0060] A plurality of insulating layers 110, 120, 130, 140, 150, and 160 for reducing or preventing unnecessary electrical connections may be provided on the device substrate 100. For example, a buffer insulating layer 110, a gate insulating layer 120, an interlayer insulating layer 130, a device passivation layer 140, a planarizing layer 150, and a bank insulating layer 160 may be provided on the device substrate 100.

[0061] The buffer insulating layer 110 may be provided on the device substrate 100. The buffer insulating layer 110 may reduce or prevent contamination caused by the device substrate 100 during the process of forming the driving circuit DC in each sub-pixel SP. For example, the upper surface of the device substrate 100 facing the driving circuit DC of each sub-pixel SP may be completely covered by the buffer insulating layer 110. The buffer insulating layer 110 may include an insulating material. For example, the buffer insulating layer 110 may include an inorganic insulating material such as silicon oxide (SiOx) and silicon nitride (SiNx). The buffer insulating layer 110 may have a multilayer structure. For example, the buffer insulating layer 110 may have a structure in which an inorganic insulating layer made of silicon oxide (SiOx) and an inorganic insulating layer made of silicon nitride (SiNx) are stacked.

[0062] The gate insulating layer 120 may be disposed on the buffer insulating layer 110. The first gate electrode of each sub-pixel SP may be insulated from the first semiconductor pattern of the corresponding sub-pixel SP by the gate insulating layer 120. The second gate electrode 223 of each sub-pixel SP may be insulated from the second semiconductor pattern 221 of the corresponding sub-pixel SP by the gate insulating layer 120. For example, the gate insulating layer 120 may cover the first and second semiconductor patterns 221 of each sub-pixel SP. The first and second gate electrodes 223 of each sub-pixel SP may be disposed on the gate insulating layer 120. The gate insulating layer 120 may include an insulating material. For example, the gate insulating layer 120 may include an inorganic insulating material such as silicon oxide (SiOx) and silicon nitride (SiNx).

[0063] The interlayer insulating layer 130 may be disposed on the gate insulating layer 120. The first drain electrode and the first source electrode of each sub-pixel SP may be insulated from the first gate electrode of the corresponding sub-pixel SP by the interlayer insulating layer 130. The second drain electrode 225 and the second source electrode 227 of each sub-pixel SP may be insulated from the second gate electrode 223 of the corresponding sub-pixel SP by the interlayer insulating layer 130. For example, the interlayer insulating layer 130 may cover the first and second gate electrodes 223 of each sub-pixel SP. The first drain electrode, the first source electrode, the second drain electrode 225, and the second source electrode 227 of each sub-pixel SP may be disposed on the interlayer insulating layer 130. The interlayer insulating layer 130 may include an insulating material. For example, the interlayer insulating layer 130 may include an inorganic insulating material.

[0064] The device passivation layer 140 may be disposed on the interlayer insulating layer 130. The device passivation layer 140 may reduce or prevent damage to the driving circuit DC in each sub-pixel SP due to external impact and moisture. The device passivation layer 140 may extend beyond the driving circuit DC in each sub-pixel SP. The device passivation layer 140 may extend along the upper surface of the driving circuit DC of each sub-pixel SP that is opposite to the device substrate 100. For example, the first drain electrode, the first source electrode, the second drain electrode 225, and the second source electrode 227 of each sub-pixel SP may be covered by the device passivation layer 140. The device passivation layer 140 may extend beyond the driving circuit DC in each pixel area PA. The device passivation layer 140 may include an insulating material. For example, the device passivation layer 140 may be a linear insulating layer made of an inorganic insulating material.

[0065] A planarization layer 150 may be disposed on the device passivation layer 140. The planarization layer 150 may eliminate thickness differences caused by the drive circuit DC of each sub-pixel SP. For example, the upper surface of the planarization layer 150, which faces the device substrate 100, may be a flat surface. The upper surface of the planarization layer 150 may be parallel to the upper surface of the device substrate 100. The planarization layer 150 may include an insulating material. The planarization layer 150 may include a material different from that of the device passivation layer 140. The planarization layer 150 may include a material having relatively high fluidity. For example, the planarization layer 150 may include an organic insulating material.

[0066] The light emitting device 300 of each sub-pixel SP may be disposed on the planarization layer 150. The light emitting device 300 of each sub-pixel SP may emit light exhibiting a specific color. For example, the light emitting device 300 of each sub-pixel SP may include a first electrode 310, a light emitting layer 320, and a second electrode 330 sequentially stacked on the planarization layer 150 of the corresponding sub-pixel SP.

[0067] The first electrode 310 may include a conductive material. The first electrode 310 may include a material having a relatively high reflectivity. For example, the first electrode 310 may include a metal such as aluminum (Al) and silver (Ag). The first electrode 310 may have a multilayer structure. For example, the first electrode 310 may have a structure in which a reflective electrode made of a metal is disposed between transparent electrodes made of a transparent conductive material such as ITO and IZO.

[0068] The light-emitting layer 320 may generate light having a brightness corresponding to the voltage difference between the first electrode 310 and the second electrode 330. For example, the light-emitting layer 320 may include at least one light-emitting material layer (EML). The light-emitting material layer may include an organic light-emitting material, an inorganic light-emitting material, or a hybrid light-emitting material. For example, the display device according to an embodiment of the present disclosure may be an organic light-emitting display device including an organic light-emitting material.

[0069] The light-emitting layer 320 may have a multilayer structure. For example, the light-emitting layer 320 may include at least one of a hole injection layer (HIL), a hole transport layer (HTL), an electron transport layer (ETL), and an electron injection layer (EIL). Therefore, in the display device according to the embodiment of the present disclosure, the light emission efficiency of the light-emitting layer 320 can be improved.

[0070] The second electrode 330 may include a conductive material. The second electrode 330 may include a material different from that of the first electrode 310. The transmittance of the second electrode 330 may be greater than the transmittance of the first electrode 310. For example, the second electrode 330 may be a transparent electrode made of a transparent conductive material such as ITO and IZO. Therefore, in the display device according to an embodiment of the present disclosure, light generated by the light-emitting layer 320 may be emitted through the second electrode 330. The second electrode 330 may have a work function smaller than that of the first electrode 310. For example, the first electrode 310 may serve as an anode electrode, and the second electrode 330 may serve as a cathode electrode.

[0071] The bank insulation layer 160 may be disposed on the planarization layer 150. The bank insulation layer 160 may include an insulating material. For example, the bank insulation layer 160 may include an organic insulating material. The bank insulation layer 160 may include a material different from that of the planarization layer 150. The bank insulation layer 160 may define the emission area EA in each sub-pixel SP. For example, the first electrode 310 of each sub-pixel SP may be partially exposed by the bank insulation layer 160, and the emission layer 320 and the second electrode 330 of each sub-pixel SP may be stacked on the portion of the corresponding first electrode 310 exposed by the bank insulation layer 160. The first electrode 310 of each sub-pixel SP may be insulated from the first electrode 310 of an adjacent sub-pixel SP by the bank insulation layer 160. For example, the edge of the first electrode 310 in each sub-pixel SP may be covered by the bank insulation layer 160.

[0072] The first electrode 310 of each subpixel SP can be electrically connected to the driving circuit DC of the corresponding subpixel SP. For example, the first electrode 310 of each subpixel SP can directly contact the second source electrode 227 of the corresponding subpixel SP by penetrating the device passivation layer 140 and the planarization layer 150. The electrical connection between the second source electrode 227 and the first electrode 310 in each subpixel SP can be performed outside the emission area EA defined in the corresponding subpixel SP. Therefore, in the display device according to an embodiment of the present disclosure, variations in the position of the first electrode 310 within the emission area EA of each subpixel SP can be reduced or minimized. For example, the portion of the first electrode 310 overlapping the emission area EA of each subpixel SP can extend along the upper surface of the planarization layer 150. The portion of the first electrode 310 overlapping the emission area EA of each subpixel SP can be in direct contact with the upper surface of the planarization layer 150. Therefore, in the display device according to an embodiment of the present disclosure, variations in brightness depending on the location at which light emitted from the emission area EA of each subpixel SP is generated can be reduced or prevented.

[0073] The light emitted from the light-emitting device 300 of each sub-pixel SP may display the same or substantially the same color as the light emitted from the light-emitting device 300 of the adjacent sub-pixel SP. For example, the light emitted from the light-emitting device 300 of each sub-pixel SP may be white light. The light-emitting layer 320 of each sub-pixel SP may have the same or substantially the same stacked structure as the light-emitting layer 320 of the adjacent sub-pixel SP. The light-emitting layer 320 of each sub-pixel SP may be formed by the same or substantially the same process as the light-emitting layer 320 of the adjacent sub-pixel SP. For example, the light-emitting layer 320 of each sub-pixel SP may be formed simultaneously with the light-emitting layer 320 of the adjacent sub-pixel SP. The light-emitting layer 320 of each sub-pixel SP may be in direct contact with the light-emitting layer 320 of the adjacent sub-pixel SP. Therefore, in the display device according to an embodiment of the present disclosure, the process of forming the light-emitting layer 320 in each sub-pixel SP can be simplified.

[0074] The voltage applied to the second electrode 330 of each subpixel SP may be the same as or substantially the same as the voltage applied to the second electrode 330 of an adjacent subpixel SP. For example, the second electrode 330 of each subpixel SP may be electrically connected to the second electrode 330 of an adjacent subpixel SP. The second electrode 330 of each subpixel SP may include the same or substantially the same material as the second electrode 330 of the adjacent subpixel SP. The second electrode 330 of each subpixel SP may be formed using the same or substantially the same process as the second electrode 330 of the adjacent subpixel SP. For example, the second electrode 330 of each subpixel SP may be formed simultaneously with the second electrode 330 of the adjacent subpixel SP. The second electrode 330 of each subpixel SP may be in direct contact with the second electrode 330 of the adjacent subpixel SP. Therefore, in the display device according to an embodiment of the present disclosure, the process of forming the second electrode 330 in each subpixel SP can be simplified. Furthermore, in the display device according to an embodiment of the present disclosure, the brightness of light generated by the light-emitting layer 320 of each subpixel SP can be adjusted by a data signal applied to the driving circuit DC of the corresponding subpixel SP.

[0075] The encapsulation structure 400 may be disposed on the light-emitting device 300 of each sub-pixel SP. The encapsulation structure 400 can reduce or prevent damage to the light-emitting device 300 in each sub-pixel SP due to external impact and moisture. The encapsulation structure 400 may have a multi-layer structure. For example, the encapsulation structure 400 may include a first encapsulation layer 410, a second encapsulation layer 420, and a third encapsulation layer 430 stacked in sequence. The first encapsulation layer 410, the second encapsulation layer 420, and the third encapsulation layer 430 may include insulating materials. The second encapsulation layer 420 may include a different material from the first encapsulation layer 410 and the third encapsulation layer 430. For example, the first encapsulation layer 410 and the third encapsulation layer 430 may include an inorganic insulating material, and the second encapsulation layer 420 may include an organic insulating material. Therefore, in a display device according to an embodiment of the present disclosure, damage to the light-emitting device 300 in each sub-pixel SP due to external impact and moisture can be effectively reduced or prevented. The thickness difference caused by the light-emitting device 300 in each sub-pixel SP can be eliminated by the second encapsulation layer 420. Second encapsulation layer 420 may have a greater thickness than first encapsulation layer 410 and third encapsulation layer 430. For example, an upper surface of encapsulation structure 400 opposite to device substrate 100 may be a flat surface. The upper surface of encapsulation structure 400 may be parallel to an upper surface of device substrate 100.

[0076] The light emitted from the light-emitting area EA of each sub-pixel SP may be different from the light emitted from the light-emitting area EA of an adjacent sub-pixel SP. For example, a color filter 520 may be provided in each sub-pixel SP. The color filter 520 of each sub-pixel SP may be provided on the path of the light emitted from the light-emitting device 300 of the corresponding sub-pixel SP. For example, the color filter 520 of each sub-pixel SP may be provided on the encapsulation structure 400. The color filter 520 of each sub-pixel SP may display a specific color by using the light emitted from the light-emitting device 300 of the corresponding sub-pixel SP. For example, the color filter 520 of each sub-pixel SP may be one of a red color filter for displaying red, a green color filter for displaying green, and a blue color filter for displaying blue. The color filter 520 of each sub-pixel SP may include a different material from the color filter 520 of the adjacent sub-pixel SP in each pixel area PA. The color of each pixel area PA may be achieved by mixing the light emitted from the light-emitting area EA of the corresponding pixel area PA.

[0077] The color filter 520 of each sub-pixel SP may have a size larger than the emission area EA of the corresponding sub-pixel SP. For example, the color filter 520 of each sub-pixel SP may have a width greater than the emission area EA of the corresponding sub-pixel SP in the first direction X. Therefore, in the display device according to the embodiment of the present disclosure, the amount of light generated by the light-emitting device 300 of each sub-pixel SP and passing through the color filter 520 of the corresponding sub-pixel SP can be increased. Therefore, in the display device according to the embodiment of the present disclosure, the light extraction efficiency of each sub-pixel SP can be improved.

[0078] A black matrix 510 may be provided between the light-emitting areas EA of each pixel area PA. The black matrix 510 may include a material capable of blocking light. For example, the black matrix 510 may include a black dye such as carbon black. The black matrix 510 may limit the direction of travel of light emitted from the light-emitting device 300 of each sub-pixel SP. For example, light emitted from the light-emitting device 300 of each sub-pixel SP toward the color filter 520 of an adjacent sub-pixel SP may be blocked by the black matrix 510. Therefore, in a display device according to an embodiment of the present disclosure, unintentional color mixing may be reduced or prevented.

[0079] The black matrix 510 may be disposed outside the emission area EA. For example, the black matrix 510 may overlap with the embankment insulating layer 160. The black matrix 510 may be disposed side by side with the color filter 520 of each sub-pixel SP. For example, the black matrix 510 may be disposed on the encapsulation structure 400. The end of the color filter 520 on each sub-pixel SP may overlap with the black matrix 510. The color filter 520 and the black matrix 510 of each sub-pixel SP may be in direct contact with the third encapsulation layer 430. For example, the color filter 520 in each sub-pixel SP may include a lower surface facing the device substrate 100, and the lower surface of the black matrix 510 facing the device substrate 100 may be continuous with the lower surface of the color filter 520 in each sub-pixel SP. Therefore, in the display device according to an embodiment of the present disclosure, light leakage caused by light passing between the color filter 520 and the black matrix 510 of each sub-pixel SP may be reduced or prevented.

[0080] The color filter insulating layer 600 may be disposed on the black matrix 510 and the color filter 520. The color filter insulating layer 600 may reduce or prevent damage to the black matrix 510 and the color filter 520 due to external impact and moisture. For example, the black matrix 510 and the color filter 520 may be covered by the color filter insulating layer 600. The color filter insulating layer 600 may include an insulating material. For example, the color filter insulating layer 600 may include an organic insulating material and / or an inorganic insulating material. The upper surface of the color filter insulating layer 600 opposite to the encapsulation structure 400 may be flat.

[0081] A plurality of optical lenses OL may be disposed on the color filter insulating layer 600. Light emitted from the emission area EA of each sub-pixel SP may be provided to a user in various ways through the optical lenses OL. For example, in a display device according to an embodiment of the present disclosure, a user may three-dimensionally recognize an image realized by the pixel area PA through the optical lenses OL. Each of the optical lenses OL may include a convex lens. The surface of each optical lens OL facing the device substrate 100 may have a convex curved surface. For example, the optical lenses OL may be biconvex lenses extending parallel to each other in one direction. The optical lenses OL may be arranged side by side along the upper surface of the color filter insulating layer 600. For example, in a display device according to an embodiment of the present disclosure, the sub-pixels SP of each pixel area PA may be arranged side by side along a first direction X and a second direction Y perpendicular to the first direction X, and each of the optical lenses OL may extend in a direction inclined relative to the first direction X and the second direction Y. Light emitted from the emission area EA of each sub-pixel SP may be provided to a user through one of the optical lenses OL.

[0082] Each pixel area PA may include a transparent area TA. External light Le incident through the device substrate 100 may pass through the transparent area TA of each pixel area PA. For example, the transparent area TA of each pixel area PA may be spaced apart from the light-emitting device 300 in the corresponding pixel area PA. For example, the first electrode 310, the light-emitting layer 320, and the second electrode 330 in each pixel area PA may not overlap with the transparent area TA of the corresponding pixel area PA. Therefore, in the display device according to an embodiment of the present disclosure, a user located on the upper surface of the device substrate 100 can identify an object located on the lower surface of the device substrate 100, opposite to the upper surface of the device substrate 100, by the external light Le passing through the transparent area TA of each pixel area PA. In other words, the display device according to an embodiment of the present disclosure may be a transparent display device. For example, when the light-emitting device 300 of each sub-pixel SP is not emitting light, the display device according to an embodiment of the present disclosure may be perceived by the user as transparent glass. Furthermore, in the display device according to an embodiment of the present disclosure, an image on the display panel DP can be provided to the user without obstructing the user's field of view. For example, in the display device according to an embodiment of the present disclosure, the user can simultaneously recognize an image realized by the display panel DP and an object located on the lower surface of the device substrate 100. Therefore, in the display device according to an embodiment of the present disclosure, accidents caused by blocking the user's field of view can be reduced or prevented.

[0083] The transparent area TA of each pixel area PA can be arranged side by side with the sub-pixel SP of the corresponding pixel area PA. For example, the transparent area TA of each pixel area PA can be arranged side by side with the sub-pixel SP of the corresponding pixel area PA in the first direction X. The transparent area TA of each pixel area PA can have a larger size than each sub-pixel SP in the corresponding pixel area PA. For example, the transparent area TA of each pixel area PA can have a longer length than each sub-pixel SP of the corresponding pixel area PA in the first direction X and the second direction Y. Therefore, in the display device according to the embodiment of the present disclosure, the transmittance of the transparent area TA of each pixel area PA can be increased. Therefore, in the display device according to the embodiment of the present disclosure, the object located on the lower surface of the device substrate 100 can be clearly identified by the user through the transparent area TA of each pixel area PA.

[0084] The transparent area TA of each pixel area PA may overlap with one of the optical lenses OL. For example, each optical lens OL may include a first lens area LA1 that overlaps with the sub-pixel SP of each pixel area PA and a second lens area LA2 that overlaps with the transparent area TA of each pixel area PA. The cross-sectional shape of each second lens area LA2 may be the same as, or substantially the same as, the cross-sectional shape of each first lens area LA1. For example, the width of each second lens area LA2 may be the same as, or substantially the same as, the width of each first lens area LA1. Therefore, in a display device according to an embodiment of the present disclosure, the process of arranging and / or forming the optical lenses OL on the pixel areas PA can be simplified.

[0085] The insulating layers 110, 120, 130, 140, 150, and 160, the encapsulation structure 400, and the color filter insulating layer 600 stacked on the sub-pixels SP of each pixel area PA can extend onto the transparent area TA of the corresponding pixel area PA. For example, the buffer insulating layer 110, the gate insulating layer 120, the interlayer insulating layer 130, the device passivation layer 140, the planarization layer 150, the bank insulating layer 160, the encapsulation structure 400, and the color filter insulating layer 600 can be sequentially stacked on the transparent area TA of each pixel area PA. Therefore, in the display device according to the embodiment of the present disclosure, deformation of the device substrate 100 and / or the optical lens OL due to the thickness difference between the emission area EA and the transparent area TA in each pixel area PA can be reduced or prevented.

[0086] The black matrix 510 may be disposed between the light-emitting area EA and the transparent area TA of each pixel area PA. For example, the black matrix 510 may be disposed outside the light-emitting area EA and the transparent area TA of each pixel area PA. The light-emitting area EA and the transparent area TA of each pixel area PA may be surrounded by the black matrix 510. Therefore, in the display device according to the embodiment of the present disclosure, light emitted from the light-emitting area EA of each pixel area PA toward the transparent area TA of the corresponding pixel area PA may be blocked by the black matrix 510. Therefore, in the display device according to the embodiment of the present disclosure, an object recognized by a user through the transparent area TA of each pixel area PA is not distorted and / or degraded or reduced due to the light emitted from the light-emitting area EA of the corresponding pixel area PA.

[0087] The correction structure 710 can be disposed between the color filter insulating layer 600 and the optical lens OL. The correction structure 710 can include a transparent material. The correction structure 710 can include an insulating material. For example, the correction structure 710 can include an organic insulating material and / or an inorganic insulating material. The correction structure 710 can overlap the light emitting area EA and the transparent area TA of each pixel area PA. The correction structure 710 can have a constant thickness across the sub-pixel SP of each pixel area PA. For example, on the sub-pixel SP of each pixel area PA, the upper surface of the correction structure 710 facing the optical lens OL can be parallel to the lower surface of the correction structure 710 facing the device substrate 100. The correction structure 710 can be in direct contact with the color filter insulating layer 600 and the optical lens OL. Therefore, in the display device according to the embodiment of the present disclosure, the light path of the light emitted from the light emitting area EA of each sub-pixel SP can be fully ensured, and damage to the light emitting device 300 and movement of the optical lens OL due to external impact can be reduced or prevented.

[0088] A concave curved surface 710c overlapping the transparent area TA of the pixel area PA may be provided on the lower surface of the correction structure 710. For example, the transparent area TA of each pixel area PA may overlap one of the concave curved surfaces 710c provided on the lower surface of the correction structure 710. The concave curved surfaces 710c of the correction structure 710 may have the same or substantially the same curvature. The concave curved surface 710c overlapping the transparent area TA of each pixel area PA may have a larger size than the transparent area TA of the corresponding pixel area PA. The concave curved surface 710c of the correction structure 710 may be spaced apart from the sub-pixel SP of each pixel area PA.

[0089] The correction patterns 720 may be disposed between the color filter insulating layer 600 and the concave curved surface 710 c of the correction structure 710. The correction patterns 720 may be in direct contact with the concave curved surface 710 c of the correction structure 710. For example, the surface of each correction pattern 720 facing the optical lens OL may have the same or substantially the same curvature as the concave curved surface 710 c of the correction structure 710. The correction patterns 720 may be in direct contact with the color filter insulating layer 600. For example, the lower surface of each correction pattern 720 facing the device substrate 100 may be continuous with the lower surface of the correction structure 710.

[0090] The correction pattern 720 may include a transparent material. The correction pattern 720 may include an insulating material. For example, each of the correction patterns 720 may include an organic insulating material and / or an inorganic insulating material. The refractive index of each correction pattern 720 may be lower than that of the correction structure 710. Therefore, in the display device according to the embodiment of the present disclosure, external light Le passing through the transparent area TA of each pixel area PA may be diffused due to the refractive index difference between each correction pattern 720 and the correction structure 710. That is, in the display device according to the embodiment of the present disclosure, the concave curved surface 710c serving as the boundary between the correction pattern 720 and the correction structure 710 may each function as a concave lens. The portion of the correction structure 710 overlapping with the transparent area TA of each pixel area PA may be defined as a correction lens CL. For example, in the display device according to the embodiment of the present disclosure, the correction lens CL functioning as a concave lens may be disposed between the portion of the color filter insulating layer 600 overlapping with the transparent area TA of each pixel area PA and the second lens area LA2 of each optical lens OL.

[0091] External light Le passing through one of the transparent areas TA of the device substrate 100 may be refracted first by one of the correction lenses CL and second by the second lens area LA2 of one of the optical lenses OL. The external light Le passing through each correction lens CL may be diffused, while the external light Le passing through the second lens area LA2 of each optical lens OL may be concentrated. Therefore, in the display device according to an embodiment of the present disclosure, the effect of converging the external light Le may be significantly reduced due to the diffusion of the external light Le by each correction lens CL. The concave curved surface 710c overlapping the transparent area TA of each pixel area PA may have a curvature that can offset the convergence of light passing through the second lens area LA2 of the optical lens OL on the corresponding pixel area PA. For example, the concave curved surface 710c of the correction structure 710 may have a different curvature than the surface of the optical lens OL facing the device substrate 100. That is, in the display device according to an embodiment of the present disclosure, the refraction of the external light Le by the second lens area LA2 of each optical lens OL may be substantially offset by the refraction of the external light Le by each correction lens CL. Therefore, in the display device according to the embodiment of the present disclosure, an object located on the lower surface of the device substrate 100 can be recognized by the user without being substantially affected by the optical lens OL. That is, in the display device according to the embodiment of the present disclosure, deformation of the object located on the lower surface of the device substrate 100 due to the optical lens OL can be reduced or prevented.

[0092] Therefore, the display device according to the embodiment of the present disclosure may include a light-emitting device 300 on the light-emitting area EA of the device substrate 100, an encapsulation structure 400 covering the light-emitting device 300, an optical lens OL disposed on the encapsulation structure 400, and a correction lens CL disposed between the encapsulation structure 400 and the optical lens OL, wherein the correction lens CL may overlap with the transparent area TA of the device substrate 100, and wherein the surface of each correction lens CL facing the device substrate 100 may have a concave curved surface 710c. Therefore, in the display device according to the embodiment of the present disclosure, external light Le passing through the transparent area TA of the device substrate 100 can be provided to the user through the correction lens CL without being affected by the optical lens OL. Therefore, in the display device according to the embodiment of the present disclosure, deformation of an object recognized by the user through the transparent area TA of the device substrate 100 can be reduced or prevented.

[0093] Furthermore, in the display device according to an embodiment of the present disclosure, the correction lens CL can be formed by the refractive index difference between the correction structure 710 and the correction pattern 720. Therefore, in the display device according to an embodiment of the present disclosure, the process of the correction lens CL can be simplified. Therefore, in the display device according to an embodiment of the present disclosure, the production energy can be reduced through process optimization.

[0094] The display device according to an embodiment of the present disclosure has been described in which the drive circuit DC of each pixel area PA may be composed of a first thin-film transistor TR1, a second thin-film transistor TR2, and a storage capacitor Cst. However, in a display device according to another embodiment of the present disclosure, the drive circuit DC of each pixel area PA may include a drive thin-film transistor and at least one switching thin-film transistor. For example, in a display device according to another embodiment of the present disclosure, the drive circuit DC of each pixel area PA may further include a third thin-film transistor capable of initializing the storage capacitor Cst of the corresponding pixel area PA based on a gate signal. The third thin-film transistor of each pixel area PA may include a third semiconductor pattern, a third gate electrode, a third drain electrode, and a third source electrode. The third semiconductor pattern of each pixel area PA may include a semiconductor material. The third gate electrode of each pixel area PA may be electrically connected to the corresponding gate line GL. The third drain electrode of each pixel area PA may be electrically connected to an initialization line for applying an initialization signal. The third source electrode of each pixel area PA may be electrically connected to the storage capacitor Cst of the corresponding pixel area PA. Therefore, in the display device according to another embodiment of the present disclosure, the degree of freedom in configuring each drive circuit DC can be increased.

[0095] In a display device according to an embodiment of the present disclosure, the positions and electrical connections of the first drain electrode, first source electrode, second drain electrode 225, and second source electrode 227 in each drive circuit DC can vary depending on the configuration of the corresponding drive circuit DC and / or the type of the corresponding thin-film transistors TR1 and TR2. For example, in a display device according to another embodiment of the present disclosure, the second gate electrode 223 of each drive circuit DC can be electrically connected to the first drain electrode of the corresponding drive circuit DC. Therefore, in a display device according to another embodiment of the present disclosure, the degree of freedom in the configuration of each drive circuit DC and the type of each thin-film transistor TR1 and TR2 can be increased.

[0096] The display device according to the embodiment of the present disclosure is described in which the light emitted from the light emitting device 300 of each sub-pixel SP can display the same or substantially the same color as the light emitted from the light emitting device 300 of the adjacent sub-pixel SP. However, in a display device according to another embodiment of the present disclosure, the light emitted from the light emitting device 300 of each sub-pixel SP can display a different color from the light emitted from the light emitting device 300 of the adjacent sub-pixel SP. For example, in the display device according to another embodiment of the present disclosure, the light emitting layer 320 of each sub-pixel SP can be spaced apart from the light emitting layer 320 of the adjacent sub-pixel SP, as shown in FIG. Figure 5 As shown. The light-emitting layer 320 of each sub-pixel SP may include a material different from that of the light-emitting layer 320 of an adjacent sub-pixel SP. The light-emitting layer 320 of each sub-pixel SP may have a stacked structure different from that of the light-emitting layer 320 of an adjacent sub-pixel SP. For example, each sub-pixel SP may be one of a red sub-pixel that displays red, a green sub-pixel that displays green, and a blue sub-pixel that displays blue, and the light-emitting layer 320 of each sub-pixel SP may include a red light-emitting material that generates red light, a green light-emitting material that generates green light, and a blue light-emitting material that generates blue light, depending on the color displayed by the corresponding sub-pixel SP. Therefore, in a display device according to another embodiment of the present disclosure, the color reproduction of each sub-pixel SP can be improved.

[0097] The display device according to the embodiment of the present disclosure is described in which the optical lens OL can be in direct contact with the upper surface of the correction structure 710. However, in a display device according to another embodiment of the present disclosure, the optical lens OL can be spaced apart from the correction structure 710. For example, in a display device according to another embodiment of the present disclosure, the optical lens OL can be supported by the optical substrate OS, such as Figure 5As shown. The optical substrate OS may be spaced apart from the correction structure 710. The optical substrate OS may include an insulating material. The optical substrate OS may include a transparent material. For example, the optical substrate OS may include glass or plastic. Regardless of the formation process of the light-emitting device 300 and the formation process of the correction structure 710, the optical lens OL may be formed. For example, the optical lens OL formed by separate processes may be physically fixed on the device substrate 100 in which the light-emitting device 300 and the correction structure 710 are formed. Therefore, in the display device according to another embodiment of the present disclosure, damage to the light-emitting device 300 due to the process of forming the optical lens OL may be reduced or prevented. Furthermore, in the display device according to another embodiment of the present disclosure, the degree of freedom of the formation process and material of the optical lens OL may be improved.

[0098] A display device according to another embodiment of the present disclosure may include a color filter substrate 500 that supports a black matrix 510, a color filter 520, a color filter insulating layer 600, a correction structure 710, and a correction pattern 720. The color filter substrate 500 may be spaced apart from the encapsulation structure 400. For example, the black matrix 510, the color filter 520, the color filter insulating layer 600, the correction structure 710, and the correction pattern 720 may be formed regardless of the formation process of the light-emitting device 300. The color filter substrate 500 may be physically fixed to the device substrate 100 having the light-emitting device 300 formed therein. Therefore, in the display device according to another embodiment of the present disclosure, damage to the light-emitting device 300 caused by the formation process of the black matrix 510, the color filter 520, the color filter insulating layer 600, the correction structure 710, and / or the correction pattern 720 may be reduced or prevented. Therefore, in the display device according to another embodiment of the present disclosure, damage to the light-emitting device 300 due to the formation process may be effectively reduced or prevented.

[0099] The display device according to the embodiment of the present disclosure is described in which the correction lens CL can be provided between the color filter insulating layer 600 and the optical lens OL. However, in a display device according to another embodiment of the present disclosure, the correction lens CL can be arranged at various positions. For example, in a display device according to another embodiment of the present disclosure, the correction structure 710 can be provided on the lower surface of the device substrate 100, such as Figure 6As shown. The upper surface of the correction structure 710 facing the optical lens OL can be in direct contact with the lower surface of the device substrate 100. The lower surface of each optical lens OL can be in direct contact with the color filter insulating layer 600. The correction lens CL formed by the concave curved surface 710c of the correction structure 710 can overlap with the transparent area TA of each pixel area PA. Therefore, in the display device according to another embodiment of the present disclosure, the external light mainly refracted by the correction lens CL can pass through the transparent area TA of the device substrate 100. Therefore, in the display device according to another embodiment of the present disclosure, the degree of freedom of the position of the correction lens CL can be increased for offsetting the refraction of the second lens area LA2 of each optical lens OL.

[0100] The display device according to the embodiment of the present disclosure is described in which the correction lens CL can be formed by the refractive index difference between the correction structure 710 and the correction pattern 720. However, in the display device according to another embodiment of the present disclosure, the concave curved surface 710c of the correction structure 710 can be in direct contact with the air. For example, in the display device according to another embodiment of the present disclosure, the concave curved surface 710c of the correction structure 710 can be exposed to the outside, such as Figure 6 As shown. Therefore, in a display device according to another embodiment of the present disclosure, each of the correction lenses CL can be formed by the refractive index difference between the correction structure 710 and air. That is, in a display device according to another embodiment of the present disclosure, the process of forming the correction pattern 720 can be omitted. Therefore, in a display device according to another embodiment of the present disclosure, a reduction in process efficiency can be reduced or minimized, and deformation of an object recognized by a user through the transparent area TA of the device substrate 100 can be reduced or prevented. Furthermore, in a display device according to another embodiment of the present disclosure, the transmittance of each transparent area TA can be improved.

[0101] A display device according to an embodiment of the present disclosure is described in which a black matrix 510 having a single-layer structure can be provided on the light-emitting area EA of each sub-pixel SP. However, in a display device according to another embodiment of the present disclosure, the traveling direction of light emitted by the light-emitting device 300 of each sub-pixel SP can be restricted by at least two layers of black matrices 510. For example, in a display device according to another embodiment of the present disclosure, a first black matrix 511 can be provided on the encapsulation structure 400, a second black matrix 512 can be provided on the first color filter insulating layer 610 covering the first black matrix 511, and a correction structure 710 and a correction pattern 720 can be provided on the second color filter insulating layer 620 covering the second black matrix 512, as shown in FIG. Figure 7as shown. Therefore, in a display device according to another embodiment of the present disclosure, the traveling direction of light emitted by the light-emitting device 300 of each sub-pixel SP can be limited by the first black matrix 511 and the second black matrix 512. That is, in a display device according to another embodiment of the present disclosure, the black matrix 510 having a multi-layer structure can achieve a narrow viewing angle. For example, in a display device according to another embodiment of the present disclosure, the image provided to the user cannot be recognized by people around the user. Also, in a display device according to another embodiment of the present disclosure, the generation of unnecessary images due to the diffusion of light can be reduced or prevented. For example, in a display device according to another embodiment of the present disclosure, the repeated generation of a three-dimensional image recognized by the user through the optical lens OL can be reduced or prevented. Therefore, in a display device according to another embodiment of the present disclosure, the quality of the image provided to the user can be improved.

[0102] In a display device according to another embodiment of the present disclosure, a pixel lens 730 may be disposed between the second color filter insulating layer 620 and the first lens area LA1 of the optical lens OL. Each of the pixel lenses 730 may overlap with the light-emitting area EA of one of the sub-pixels SP disposed in each pixel area PA. The pixel lenses 730 may be convex lenses. For example, the surface of each pixel lens 730 opposite the device substrate 100 may have a convex shape toward the optical lens OL. Therefore, in the display device according to another embodiment of the present disclosure, the light Ld emitted from the light-emitting device 300 of each sub-pixel SP may be first converged by the pixel lens 730 disposed on the corresponding sub-pixel SP, and secondly converged by the first lens area LA1 of one of the optical lenses OL. Therefore, in the display device according to another embodiment of the present disclosure, the brightness of the light provided to the user may be improved.

[0103] The pixel lens 730 can be provided on the same layer as the correction pattern 720. For example, the lower surface of each pixel lens 730 facing the device substrate 100 can be continuous with the lower surface of the correction structure 710. The lower surface of each pixel lens 730 and the lower surface of each correction pattern 720 can be in direct contact with the second color filter insulating layer 620. The surface of each pixel lens 730 opposite to the device substrate 100 can be in direct contact with the correction structure 710. The refractive index of each pixel lens 730 can be greater than the refractive index of the correction structure 710. Therefore, in the display device according to another embodiment of the present disclosure, the thickness difference caused by the pixel lens 730 can be removed by the correction structure 710. That is, in the display device according to another embodiment of the present disclosure, the process of forming a planarization layer to remove the thickness difference caused by the pixel lens 730 can be omitted. Therefore, in the display device according to another embodiment of the present disclosure, the process efficiency can be improved.

[0104] The display device according to the embodiment of the present disclosure is described in which the optical lens OL may extend in a direction oblique to the first direction X and the second direction Y. However, in a display device according to another embodiment of the present disclosure, the optical lens OL may extend in the first direction X or the second direction Y. For example, in the display device according to another embodiment of the present disclosure, the optical lens OL may include a first lens L1 overlapping with the sub-pixel SP of each pixel area PA and a second lens L2 overlapping with the transparent area TA of each pixel area PA, as shown in FIG. Figure 8 As shown. The second lens L2 may extend parallel to the first lens L1. For example, in a display device according to another embodiment of the present disclosure, the first lens L1 and the second lens L2 may extend along the second direction Y. Therefore, in the display device according to another embodiment of the present disclosure, distortion of an object provided to a user through the transparent area TA of each pixel area PA can be reduced or prevented, and the optical lens OL can be arranged in various positions according to the image provided to the user using the light emitted from the light-emitting device 300 of each sub-pixel SP. Therefore, in the display device according to another embodiment of the present disclosure, the degree of freedom in the arrangement of the optical lens OL can be increased.

[0105] The display device according to the embodiment of the present disclosure can be used in various electronic devices. For example, the display device according to the embodiment of the present disclosure may include an image element 10 in which a display panel DP is accommodated, such as Figure 9 and Figure 10 As shown. The image element 10 can be fixed in front of the user's eyes by the mounting element 20. For example, the display device according to the embodiment of the present disclosure can be a head-mounted display device (HMD) mounted on the user's head. The mounting element 20 can have a shape such as the leg of a glasses frame. For example, the mounting element 20 can have a shape extending in one direction from the edge of the image element 10. The mounting element 20 can be connected to the image element 10 by a connecting element 30. For example, the connecting element 30 can have a plate shape including an area connected to the image element 10 and an area connected to the mounting element 20. The connecting element 30 can be arranged inside the image element 10 and the mounting element 20.

[0106] The optical lens OL may include a left-eye lens LL positioned in front of the user's left eye and a right-eye lens LR positioned in front of the user's right eye. A blank space may be provided between the device substrate 100, on which the encapsulation structure 400 is formed, and the optical lens OL. For example, the device substrate 100, on which the encapsulation structure 400 is formed, may be positioned near the first surface of the image element 10, and the left-eye lens LL and the right-eye lens LR may be secured to a second surface of the image element 10, opposite the first surface of the image element 10. A gap maintaining member 40 may be provided within the coupling member 30 to maintain a space between the optical lens OL and the device substrate 100, on which the encapsulation structure 400 is formed. The gap maintaining member 40 may be provided parallel to the coupling member 30. For example, the gap maintaining member 40 may be in direct contact with the inner surface of the coupling member 30.

[0107] The correction unit 700 may be disposed between the encapsulation structure 400 and the optical lens OL. The correction unit 700 may include a correction structure. Therefore, in a display device according to an embodiment of the present disclosure, an object located in front of the user and an image of the object displayed by the display panel DP can be simultaneously provided to the user, and distortion of the object can be reduced or prevented. Therefore, in a display device according to an embodiment of the present disclosure, accidents caused by obstruction of the user's field of view and accidents caused by distortion of objects perceived by the user can be reduced.

[0108] The image element 10 may be provided with a first fixing portion 51 for fixing the device substrate 100 in which the encapsulation structure 400 is formed, and a second fixing portion 52 for fixing the correction unit 700. The first fixing portion 51 may be in direct contact with the image element 10. The second fixing portion 52 may be in direct contact with the gap maintaining element 40. The second fixing portion 52 may include an area that contacts the first fixing portion 51. Therefore, in the display device according to the embodiment of the present disclosure, the movement of the device substrate 100, the correction unit 700, and the optical lens OL according to the movement of the user can be effectively reduced or prevented. Therefore, in the display device according to the embodiment of the present disclosure, the distortion of an object recognized by a moving user through the transparent area TA of each pixel area PA can be effectively reduced or prevented.

[0109] The display device according to an embodiment of the present disclosure is described in which the mounting element 20 may have the shape of a glasses frame leg. However, a display device according to another embodiment of the present disclosure may include a mounting element 20 having various shapes. For example, in a display device according to another embodiment of the present disclosure, the mounting element 20 may have a head gear shape that surrounds the user's head. Therefore, in the display device according to another embodiment of the present disclosure, regardless of the shape of the electronic device including the display panel DP, deformation of an object recognized by the user through the transparent area TA of the device substrate 100 can be reduced or prevented.

[0110] As a result, the display device according to the embodiment of the present disclosure may include a light-emitting device arranged on the light-emitting area of ​​the device substrate, a correction lens overlapping the transparent area of ​​the device substrate, and at least one optical lens arranged on the light-emitting device and the correction lens, wherein the correction lens may have a curved surface with a different shape from that of the at least one optical lens. That is, in the display device according to the embodiment of the present disclosure, external light passing through the transparent area of ​​the device substrate can be provided to the user by passing through the correction lens and the at least one optical lens. Therefore, in the display device according to the embodiment of the present disclosure, the refraction of external light caused by the at least one optical lens can be compensated by the correction lens. Thus, in the display device according to the embodiment of the present disclosure, the deformation of the object recognized by the user through the transparent area of ​​the device substrate can be reduced or prevented. Moreover, in the display device according to the embodiment of the present disclosure, the production energy can be reduced by process optimization.

[0111] Cross-references to related applications

[0112] This application claims the benefit of Korean Patent Application No. 10-2024-0024976, filed in Korea on February 21, 2024, which is hereby incorporated by reference as if fully set forth herein.

Claims

1. A display device, comprising: a light-emitting device, the light-emitting device being disposed on a light-emitting region of the device substrate; a correction lens, the correction lens overlapping the transparent area of ​​the device substrate; as well as at least one optical lens, the at least one optical lens being disposed on the light emitting device and the correction lens, Wherein, a surface of the correction lens opposite to the at least one optical lens has a concave curved surface shape.

2. The display device according to claim 1, wherein A surface of the at least one optical lens opposite to the device substrate has a convex curved shape.

3. The display device according to claim 1, wherein The device substrate includes a first surface facing the light emitting device and a second surface opposite to the first surface, and Wherein, the correction lens is arranged on the second surface of the device substrate.

4. The display device according to claim 3, wherein A surface of the correction lens facing the at least one optical lens is in contact with the second surface of the device substrate.

5. The display device according to claim 3, further comprising: a color filter insulating layer, the color filter insulating layer being disposed between the light emitting device and the at least one optical lens, the color filter insulating layer extending onto the transparent region; as well as a color filter, the color filter being disposed between the light emitting device and the color filter insulating layer, the color filter overlapping the light emitting region, Wherein, the at least one optical lens is in contact with the color filter insulating layer. The display device according to claim 1 , wherein: The at least one optical lens includes a first lens area overlapping the light emitting area and a second lens area overlapping the transparent area, and The width of the second lens area is the same as the width of the first lens area.

7. A display device, comprising: a device substrate comprising a plurality of pixel regions; a light emitting device, each of the light emitting devices being disposed on a light emitting region of each of the plurality of pixel regions; a correction structure disposed on the device substrate, the correction structure comprising a concave curved surface overlapping the transparent region of each of the plurality of pixel regions; at least one optical lens, the at least one optical lens being arranged on the light emitting device and the correction structure, wherein the correction structure comprises a first surface facing the at least one optical lens and a second surface opposite to the first surface, and Wherein, the concave curved surface is arranged on the second surface of the correction structure.

8. The display device according to claim 7, wherein The surface of the at least one optical lens has a convex curvature, and The convex curved surface has a curvature different from that of the concave curved surface.

9. The display device according to claim 7, further comprising a packaging structure provided on the device substrate, the packaging structure covering the light emitting device. in, The correction structure is disposed between the packaging structure and the at least one optical lens.

10. The display device according to claim 9, wherein The correction structure extends onto the light emitting region of each of the plurality of pixel regions.

11. The display device according to claim 9, further comprising a correction pattern disposed between the encapsulation structure and the correction structure, the correction pattern contacting the concave curved surface. in, The refractive index of each correction pattern is smaller than the refractive index of the correction structure.

12. The display device according to claim 11, wherein A surface of each correction pattern facing the package structure is continuous with a surface of the correction structure facing the package structure.

13. The display device according to claim 11 , further comprising a pixel lens disposed between the encapsulation structure and the correction structure, each of the pixel lenses overlapping the light emitting region of each of the plurality of pixel regions. in, A surface of each pixel lens facing the at least one optical lens has a convex curved surface.

14. The display device according to claim 13, wherein A surface of each of the plurality of pixel regions facing the at least one optical lens is in contact with the correction structure, and Wherein, the refractive index of the correction structure is smaller than the refractive index of each pixel lens.

15. The display device according to claim 13, wherein A surface of each pixel lens facing the packaging structure is continuous with a surface of the correction structure facing the packaging structure.

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