Apparatus and method for manufacturing display device

Abstract

An apparatus and method for manufacturing a display device are provided. The apparatus includes: an ink discharge unit configured to move in a first direction and including a head unit including a plurality of nozzles spaced apart from each other and configured to discharge ink on a substrate and a film member, in which the ink is discharged through at least one nozzle unit including a plurality of columns; an inspection unit including a film member including the same material as the substrate; a camera unit configured to obtain first image information about the ink discharged on the film member; and a moving unit configured to move the ink discharge unit and the camera unit in the first direction, in which at least two nozzles are selected from among the plurality of nozzles for discharging the ink based on the first image information.

Description

[0001] This application is based on and claims priority to Korean Patent Application No. 10-2024-0120948, filed on September 5, 2024, with the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference. Technical Field

[0002] One or more embodiments relate to an apparatus and method, and more specifically, to an apparatus and method for manufacturing a display device. Background Technology

[0003] Mobile electronic devices are now widely used. In recent years, in addition to compact electronic devices such as mobile phones, tablet PCs have also become widely used as mobile electronic devices.

[0004] To support various functions, such mobile electronic devices include display devices for providing visual information (such as images and videos) to users. As other components used to drive the display devices have recently been miniaturized, the proportion of display devices in electronic devices has gradually increased, and structures capable of bending at an angle from a flat state have also been developed. Summary of the Invention

[0005] One or more embodiments include an apparatus for manufacturing a display device, the apparatus being capable of dispensing ink at precise locations on a substrate.

[0006] However, this purpose is merely an example, and the purpose of disclosure is not limited to this.

[0007] Additional aspects will be set forth in part in the description which follows, and will also be apparent in part from the description, or may be learned by practice of the disclosed embodiments presented.

[0008] According to an aspect of this disclosure, an apparatus for manufacturing a display device includes: an ink discharge unit configured to move in a first direction and including a head unit, the head unit including a plurality of nozzles spaced apart from each other and configured to discharge ink toward a substrate; an inspection unit including a membrane member, the membrane member and the substrate comprising the same material; a camera unit configured to acquire first image information about ink discharged onto the membrane member; a moving unit configured to move the ink discharge unit and the camera unit in the first direction; and a control unit configured to select at least two nozzles from the plurality of nozzles based on the first image information to discharge ink onto the substrate.

[0009] In this embodiment, the device may further include: a platform, spaced apart from the head unit in a vertical direction and configured to move in a second direction intersecting the first direction, wherein a base is disposed on the platform and the vertical direction is perpendicular to the plane defined by the first and second directions, wherein the control unit is further configured to control the ink ejection unit based on the second image information to individually adjust the ejection timing of each of the at least two nozzles, and wherein the camera unit is further configured to photograph the ink ejected on the base to obtain the second image information.

[0010] In this embodiment, the control unit may also be configured to adjust the emission timing of the ink discharge unit, such that one of the at least two nozzles discharges ink in a first emission timing, and the other of the at least two nozzles discharges ink in a second emission timing different from the first emission timing.

[0011] In this embodiment, the control unit may also be configured to obtain information on the total amount of ink discharged on the substrate and the position of the ink discharged on the substrate based on the second image information.

[0012] In this embodiment, the control unit may also be configured to determine the moving speed of the ink discharge unit in the first direction and the position of the ink discharge unit based on the total amount of ink discharged on the substrate and the position of the ink discharge on the substrate.

[0013] In this embodiment, the control unit may also be configured to move the console such that the emission timing of each of at least two nozzles is adjusted by the distance the console moves.

[0014] In this embodiment, the control unit may also be configured to generate first printing information based on the first image information, the first printing information including the emission position of ink to be emitted within the substrate.

[0015] In this embodiment, the device may further include: a stage spaced apart from the head unit and configured to move in a second direction, wherein a substrate is disposed on the stage, wherein a camera unit obtains second image information by photographing ink dispensed on the substrate, and wherein a control unit is further configured to calculate the spraying error of each of a plurality of nozzles based on the first printing information and the second image information.

[0016] In this embodiment, each of the surface of the membrane component and the surface of the substrate can be waterproof.

[0017] In this embodiment, the inspection unit may include: an inspection table configured to support the membrane member; and an inspection table drive unit, wherein the inspection table is mounted on the inspection table drive unit and the inspection table drive unit is configured to linearly move the inspection table.

[0018] According to an aspect of this disclosure, a method of manufacturing a display device includes the following steps: setting a film component on an inspection unit; discharging ink onto the film component through a plurality of nozzles of an ink discharge unit; obtaining first image information by photographing the ink discharged onto the film component, wherein the first image information includes the position and shape of the ink discharged onto the film component; and selecting at least two nozzles from the plurality of nozzles based on the first image information to discharge ink onto a substrate.

[0019] In this embodiment, the method may further include the following step: determining first printing information based on at least two nozzles, including the location on the substrate where ink will be dispensed.

[0020] In this embodiment, the method may further include the following steps: discharging ink onto a substrate set on a stage using an ink ejection unit based on first printing information; obtaining second image information by photographing the ink discharged onto the substrate using a camera unit; calculating the ejection error of the ink ejection unit based on the first printing information and the second image information, wherein the first printing information includes a first coordinate of the position on the substrate where ink will be discharged, wherein the second image information includes a second coordinate of the position of the ink in the second image information, and wherein the ejection error corresponds to the difference between the second coordinate and the first coordinate; and generating second printing information based on the ejection error, wherein the second printing information includes the position of the stage on which the substrate is placed, the position of the ink ejection unit, and the ejection sequence of each of the plurality of nozzles discharging ink, at least one of which differs from the corresponding information in the previous second printing information.

[0021] In this embodiment, the method may further include the following steps: adjusting the operation of the ink ejection unit differently depending on whether the ejection error is positive or negative, wherein the ejection error is positive when the second coordinate is greater than the first coordinate, and negative when the second coordinate is less than the first coordinate.

[0022] In this embodiment, the operation of each of the multiple nozzles in the ink ejection unit can be adjusted individually based on the jetting error.

[0023] In this embodiment, the method may further include the step of: changing the timing of ink discharge from at least one of the plurality of nozzles based on the jetting error.

[0024] In this embodiment, the method may further include the following steps: determining whether each of the plurality of nozzles is operating normally based on the first image information.

[0025] In this embodiment, the surface of the membrane component and the surface of the substrate are waterproof.

[0026] In this embodiment, the method may further include the following steps: setting the moving distance of the head unit of the ink ejection unit based on the jetting error.

[0027] In this embodiment, the method may further include the following step: linearly moving the membrane component.

[0028] Other aspects, features, and advantages, in addition to those described above, will become apparent from the accompanying drawings, claims, and detailed description. Attached Figure Description

[0029] The above and other aspects, features, and advantages of certain disclosed embodiments will become more apparent from the following description taken in conjunction with the accompanying drawings, in which: Figure 1 This is a perspective view of an apparatus for manufacturing a display device according to embodiments of the present disclosure; Figure 2 This is a plan view of the ink discharge unit according to an embodiment of the present disclosure; Figure 3 This is a bottom view showing a portion of the head unit of an ink ejection unit according to an embodiment of the present disclosure; Figure 4 This is a perspective view showing a membrane component, inspection table, and camera unit according to an embodiment of the present disclosure; Figure 5 This is a plan view illustrating the relationship between ink emitted through an apparatus for manufacturing a display device and a set position, according to an embodiment of the present disclosure; Figure 6 This is a perspective view showing a display device according to an embodiment of the present disclosure; Figure 7 This is a cross-sectional view showing a display device according to an embodiment of the present disclosure; Figure 8 and Figure 9 This is a cross-sectional view showing a display device according to an embodiment of the present disclosure; Figure 10 This is a plan view showing a portion of a color conversion panel according to an embodiment of the present disclosure; Figure 11 This is a perspective view showing a display device according to an embodiment of the present disclosure; Figure 12 This illustrates an embodiment according to the present disclosure. Figure 11 An exploded perspective view of the display device shown; and Figure 13 This illustrates an embodiment according to the present disclosure. Figure 6 or Figure 11 Block diagram of the display device shown. Detailed Implementation

[0030] Reference will now be made in detail to embodiments illustrated in the accompanying drawings, wherein the same reference numerals refer to the same elements throughout. In this respect, embodiments may take different forms and should not be construed as limited to the description set forth herein. Therefore, embodiments are described below only by reference to the accompanying drawings to explain aspects of this specification. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items. Throughout this disclosure, the expression “at least one of a, b, and c” means only a, only b, only c, both a and b, both a and c, both b and c, all of a, b, and c, or variations thereof.

[0031] Because the disclosure allows for various modifications and numerous embodiments, certain embodiments will be shown in the accompanying drawings and described in detail in the written description. Hereinafter, the effects and features of the disclosure, and methods for implementing them, will be described more fully with reference to the accompanying drawings, in which embodiments of the disclosure are shown. However, the disclosure can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein.

[0032] In the following description, embodiments will be described with reference to the accompanying drawings, wherein the same reference numerals always refer to the same elements and repeated descriptions thereof are omitted.

[0033] In the following embodiments, terms such as “first” and “second” are used only to describe various elements, but the elements are not limited by the terms. These terms are used only for the purpose of distinguishing one element from another.

[0034] In the following embodiments, singular expressions are used to cover plural expressions unless they have a significantly different meaning in the context.

[0035] In the following embodiments, terms such as “comprising” or “including” may be interpreted as indicating a feature, element or combination thereof, but may not be interpreted as excluding the possibility of the presence or addition of one or more other features, elements or combinations thereof.

[0036] It will be understood that when a layer, region, or element is referred to as being "formed" on another layer, region, or element, the layer, region, or element may be formed directly or indirectly on the other layer, region, or element. That is, for example, intermediary layers, intermediary regions, or intermediary elements may exist.

[0037] For ease of interpretation, the dimensions of elements in the accompanying drawings may be exaggerated or reduced. For example, since the dimensions and thicknesses of elements in the drawings are arbitrarily shown for ease of interpretation, the disclosure is not limited thereto.

[0038] In the following embodiments, the x-axis, y-axis, and z-axis are not limited to the three axes of a Cartesian coordinate system and can be interpreted in a broader sense. For example, the x-axis, y-axis, and z-axis can be perpendicular to each other, or they can represent different directions that are not perpendicular to each other.

[0039] When embodiments can be implemented differently, a process sequence can be performed differently than the described sequence. For example, two consecutively described processes can be performed substantially simultaneously, or in the reverse order of their description. In the display field, inkjet printing apparatuses can perform control at the printhead level for error correction. However, this method cannot address errors occurring at individual nozzles within each printhead, thus failing to achieve accurate pattern printing. To overcome this limitation, the method described in this disclosure calculates the error for each nozzle, thereby enabling precise control of the ink ejection sequence for each nozzle.

[0040] Figure 1 This is a perspective view of apparatus 1 for manufacturing a display device according to an embodiment. Figure 2 This is a plan view of the ink discharge unit 15 of device 1 according to an embodiment. Figure 3 This is a bottom view showing a portion of the head unit 151 of the ink discharge unit 15 according to an embodiment. Figure 4 This is a perspective view showing the membrane component 133, inspection table 131 and camera unit 16 of the device 1 according to an embodiment. Figure 5 This is a plan view illustrating the relationship between ink emitted through the apparatus 1 used to manufacture a display device and a set position, according to an embodiment.

[0041] Reference Figures 1 to 5 The apparatus 1 for manufacturing a display device can be divided into a first region 1A and a second region 2A. In an embodiment, the first region 1A may be a region in which inspection is performed, and the second region 2A may be a region in which the actual process of dispensing ink toward the display substrate is performed.

[0042] The apparatus 1 for manufacturing display devices may include a support unit 11, a stage 12, an inspection unit 13, an ink removal unit 15, a camera unit 16, a moving unit 17, a cleaning unit 18, a stage drive unit 19, and a control unit 1000.

[0043] Support unit 11 can support stage 12, inspection unit 13, ink discharge unit 15, camera unit 16, moving unit 17, and cleaning unit 18. Support unit 11 may include a first support unit 11-1 and a second support unit 11-2. The first support unit 11-1 may be in a plane defined by a first direction (e.g., the x-axis direction) and a second direction (e.g., the y-axis direction) intersecting the first direction (e.g., the x-axis direction). The second support unit 11-2 may be disposed on the first support unit 11-1. A portion of the second support unit 11-2 may be spaced apart from the first support unit 11-1 in a third direction (e.g., the z-axis direction) to support head unit 151 and camera unit 16. For example, the second support unit 11-2 may be erected from the upper surface of the first support unit 11-1 in a third direction.

[0044] The stage 12 can be disposed on the first support unit 11-1 and can have a plane defined by a first direction and a second direction. The display substrate DS can be mounted on the stage 12, and the stage 12 can include alignment marks (not shown) for aligning the display substrate DS. The display substrate DS is part of the display device to be manufactured and can be on which the ink discharge unit 15 discharges ink (see [link to relevant documentation]). Figure 4 The target of the inkjet printing process is as follows: For example, the emitted ink IK can be disposed on the display substrate DS and can constitute a partial layer of the display device. The stage 12 can constitute the working area of ​​the inkjet printing process. The display substrate DS described above may include Figure 8 and Figure 9 The lower substrate 100 shown and some layers disposed on the lower substrate 100 (e.g., Figure 8 and Figure 9 The layer shown is disposed on the lower substrate 100 up to the pixel defining layer 119, or the display substrate DS may include an upper substrate 400, a color filter layer 500, a refractive layer RL, and a dam 600. In another embodiment, the display substrate DS may include Figure 8 and Figure 9 The lower substrate 100 shown includes all layers disposed on the lower substrate 100 up to the first inorganic encapsulation layer 310. In the following description, for ease of description, the display substrate DS is described in detail as including the upper substrate 400, the color filter layer 500, the refractive layer RL, and the dam 600.

[0045] Inspection unit 13 may be disposed on the first support unit 11-1. Before the ink discharge unit 15 discharges ink IK onto the display substrate DS, inspection unit 13 may be the target to which ink IK is discharged. The film component 133 in inspection unit 13 may include the same material as the display substrate DS disposed on stage 12.

[0046] The inspection unit 13 may include an inspection table 131, an inspection table drive unit 132, and a membrane component 133.

[0047] The inspection table 131 can be configured to move linearly on the first support unit 11-1 and can form the appearance of the inspection unit 13. The inspection table 131 can support the membrane component 133.

[0048] The inspection table drive unit 132 can be disposed between the first support unit 11-1 and the inspection table 131, and can linearly move the inspection table 131. The inspection table drive unit 132 can have various shapes. For example, the inspection table drive unit 132 may include a linear motor (or linear motor) disposed between the first support unit 11-1 and the inspection table 131, and the linear motor can connect the first support unit 11-1 and the inspection table 131 to each other. In another embodiment, the inspection table drive unit 132 may include a ball screw (or ball guide screw) disposed between the first support unit 11-1 and the inspection table 131 and connected to the inspection table 131, and a motor disposed on the first support unit 11-1 and connected to the ball screw to rotate the ball screw. In another embodiment, the inspection table drive unit 132 may include a cylinder disposed on the first support unit 11-1 and connected to the inspection table 131. In this case, the inspection table drive unit 132 is not limited to these, and may include any structure and device for linearly moving the inspection table 131.

[0049] The film component 133 may include the same material as the display substrate DS. For example, one surface of the film component 133 may be coated with the same material as the display substrate DS. For example, the surface of the film component 133 and the surface of the display substrate DS may be waterproof. The film component 133 may be configured to face the ink discharge unit 15 and the camera unit 16. The ink discharge unit 15 may discharge ink IK. In this case, the ink IK may be a polymer or a low molecular weight organic material corresponding to the emitting layer of the organic light-emitting display device. In another embodiment, the ink IK may be a red, green, or blue liquid containing pigment particles mixed in a liquid crystal, alignment agent, or solvent. In another embodiment, the ink IK may include a solution containing inorganic particles (such as quantum dot materials). Hereinafter, for ease of description, the case where the ink IK is a solution containing inorganic particles (such as quantum dot materials) will be described in detail.

[0050] The ink ejection unit 15 may include a head unit 151 and a connecting unit 152. The head unit 151 may eject ink IK toward the display substrate DS and the inspection unit 13. Multiple head units 151 may be configured. For example, multiple head units 151 may be linearly arranged in a first direction (e.g., the x-axis direction). The connecting unit 152 may connect multiple head units 151 to each other. The connecting unit 152 may be fixed to the moving unit 17.

[0051] Each of the head units 151 may include a plurality of nozzle units 151a, 151b, and 151c. The plurality of nozzle units 151a, 151b, and 151c may include a first nozzle unit 151a, a second nozzle unit 151b, and a third nozzle unit 151c spaced apart from each other. In this case, the first nozzle unit 151a, the second nozzle unit 151b, and the third nozzle unit 151c may discharge ink containing different materials from each other. For ease of description, the third nozzle unit 151c will be described in detail below.

[0052] The third nozzle unit 151c may include a plurality of third nozzles arranged in rows. In this case, each of the third nozzle units 151c may include a plurality of nozzles 1151. The plurality of nozzles 1151 may be arranged in multiple rows. For example, the plurality of nozzles 1151 may be arranged in four rows. For example, the plurality of nozzles 1151 may be configured as a first row R1, a second row R2, a third row R3, and a fourth row R4. In this case, eight nozzles 1151 may be configured in each of the first row R1, the second row R2, the third row R3, and the fourth row R4. In this case, the plurality of nozzles 1151 may be spaced apart from each other in each row. Furthermore, the plurality of nozzles 1151 configured in one row of the first row R1, the second row R2, the third row R3, and the fourth row R4 may be staggered from the plurality of nozzles 1151 configured in another row of the first row R1, the second row R2, the third row R3, and the fourth row R4. For example, a plurality of nozzles 1151 arranged in one of the first rows R1, the second row R2, the third row R3 and the fourth row R4 and a plurality of nozzles 1151 arranged in another of the first rows R1, the second row R2, the third row R3 and the fourth row R4 can be arranged relative to each other in a meandering or zigzag manner.

[0053] Ink IK can be discharged through multiple nozzles 1151. In this case, the first nozzle unit 151a can discharge ink IK comprising a first material, the second nozzle unit 151b can discharge ink IK comprising a second material, and the third nozzle unit 151c can discharge ink IK comprising a third material. In the following description, for ease of description, the third nozzle unit 151c that discharges ink IK comprising a third material will be described in detail.

[0054] Multiple nozzles 1151 may be arranged along one surface of the ink discharge unit 15 (e.g., the lower surface of the third nozzle unit 151c) to be guided toward the display substrate DS and the inspection unit 13. Multiple head units 151 may receive ink via a connection unit 152. Figure 3The diagram shows that each of the head units 151 has a third nozzle unit 151c arranged with 16 rows and 4 columns of nozzles 1151. However, this is only an example, and the arrangement and number of head units 151 are not limited to this.

[0055] Camera unit 16 is configured to face inspection unit 13 and can capture images of ink IK discharged onto inspection unit 13. Camera unit 16 can obtain image information of the discharged ink IK. Although not shown in the accompanying drawings, camera unit 16 may include multiple camera units 16. In this case, one of the multiple camera units 16 may be located in the first region 1A, and another of the multiple camera units 16 may be located in the second region 2A.

[0056] The moving unit 17 can move the ink discharge unit 15 and the camera unit 16. For example, the moving unit 17 can move the ink discharge unit 15 and the camera unit 16 in a first direction (e.g., the x-axis direction), a second direction (e.g., the y-axis direction), and a third direction (e.g., the z-axis direction). The ink discharge unit 15 and the camera unit 16 can move freely on the first support unit 11-1. The moving unit 17 may include a first moving unit 172 and a second moving unit 173.

[0057] The first moving unit 172 can move the ink discharge unit 15 in a first direction (e.g., the x-axis direction), a second direction (e.g., the y-axis direction), and a third direction (e.g., the z-axis direction). The first moving unit 172 may include a first-1 moving unit 172-1 and a first-2 moving unit 172-2. The first-1 moving unit 172-1 may be connected to the second support unit 11-2 and can move relative to the second support unit 11-2 in the first direction (e.g., the x-axis direction) and the second direction (e.g., the y-axis direction). The first-2 moving unit 172-2 may be connected to the first-1 moving unit 172-1 and can move linearly relative to the first-1 moving unit 172-1 in a third direction (e.g., the z-axis direction). The ink discharge unit 15 may be fixed to the first-2 moving unit 172-2. The ink discharge unit 15 can move in a first direction (e.g., the x-axis direction), a second direction (e.g., the y-axis direction), and a third direction (e.g., the z-axis direction) via the first-1 moving unit 172-1 and the first-2 moving unit 172-2.

[0058] The second moving unit 173 can move the camera unit 16 in a first direction (e.g., the x-axis direction), a second direction (e.g., the y-axis direction), and a third direction (e.g., the z-axis direction). The second moving unit 173 may include a second-first moving unit 173-1 and a second-second moving unit 173-2. The second-first moving unit 173-1 may be connected to the second support unit 11-2 and can move relative to the second support unit 11-2 in the first direction (e.g., the x-axis direction) and the second direction (e.g., the y-axis direction). The second-second moving unit 173-2 may be connected to the second-first moving unit 173-1 and can move linearly relative to the second-first moving unit 173-1 in a third direction (e.g., the z-axis direction). The camera unit 16 may be fixed to the second-second moving unit 173-2. The camera unit 16 can move in a first direction (e.g., the x-axis direction), a second direction (e.g., the y-axis direction), and a third direction (e.g., the z-axis direction) via the second-1 moving unit 173-1 and the second-2 moving unit 173-2.

[0059] The cleaning unit 18 can be disposed on the first support unit 11-1 and can be spaced apart from the stage 12. The ink discharge unit 15 can move in a first direction (e.g., the x-axis direction) and a second direction (e.g., the y-axis direction) to overlap with the cleaning unit 18. In other words, the cleaning unit 18 can be located at a position where the cleaning unit 18 can overlap with the ink discharge unit 15.

[0060] When ink IK dries within the nozzle 1151 of the ink ejection unit 15 or when the viscosity of the ink IK increases, problems such as nozzle 1151 clogging may occur. When the ink IK remaining in the nozzle 1151 contains foreign matter or air bubbles, the ink ejection unit 15 may experience a high probability of ink ejection failure. This can adversely affect the manufacturing quality, yield, and productivity of the display device.

[0061] The ink discharge unit 15 can periodically discharge ink IK in areas other than the working area via nozzles 1151. For example, the moving unit 17 can convey the ink discharge unit 15 from above the table 12 to above the cleaning unit 18, so that the ink discharge unit 15 can be positioned above and stacked with the cleaning unit 18 before discharging ink IK. The ink IK discharged from the ink discharge unit 15 can be sucked up and removed by the cleaning unit 18. The cleaning unit 18 can prevent problems such as clogging of the nozzles 1151 of the ink discharge unit 15 and improper ink IK discharge from occurring in advance.

[0062] To enable the cleaning unit 18 to draw in and remove ink IK discharged from the ink discharge unit 15, a plurality of holes can be defined in the upper surface of the cleaning unit 18. With the ink discharge unit 15 and the cleaning unit 18 stacked on top of each other (e.g., the lower surface of the ink discharge unit 15 and the upper surface of the cleaning unit 18 may face each other), the discharged ink IK can be drawn into the cleaning unit 18 through the plurality of holes. For example, the plurality of holes in the cleaning unit 18 can be aligned with a plurality of nozzles 1151 for cleaning the plurality of nozzles 1151.

[0063] The stage drive unit 19 can be disposed between the stage 12 and the first support unit 11-1 to allow the stage 12 to reciprocate linearly in a second direction (e.g., the y-axis direction). In this case, the stage drive unit 19 can move the stage 12 at constant intervals and / or at a constant speed. Because the stage drive unit 19 is the same as or similar to the inspection stage drive unit 132 described above, its detailed description is omitted.

[0064] The control unit 1000 can control the inspection unit 13, the ink discharge unit 15, the camera unit 16, the movement unit 17, the cleaning unit 18, and the stage drive unit 19. The control unit 1000 is described in detail below.

[0065] The ink discharge unit 15 can discharge ink IK onto the membrane member 133 supported by the inspection table 131. For example, the arrangement of the ink IK discharged onto the membrane member 133 can correspond to the arrangement of the multiple nozzles 1151. When the ink IK is discharged onto the membrane member 133 of the inspection unit 13, the camera unit 16 can capture the ink IK discharged onto the membrane member 133. The camera unit 16 may include a line scan camera. The line scan camera may be an imaging device that captures images line by line rather than capturing full-frame images.

[0066] Regarding the operation of the apparatus 1 for manufacturing a display device described above, firstly, the head unit 151 can be mounted on the film member 133. Then, each third nozzle unit 151c can mount ink onto the film member 133. In this case, the inspection table drive unit 132 can move the inspection table 131 in a second direction (e.g., the y-axis direction).

[0067] When the above process is completed, camera unit 16 can generate first image information by photographing the ink IK on membrane member 133. Camera unit 16 can detect ink IK on membrane member 133 along a column, or simultaneously detect multiple droplets of ink IK arranged in a column. In the following description, for ease of description, the case of simultaneously detecting multiple droplets of ink IK arranged in a column will be described in detail.

[0068] The camera unit 16 can capture first image information and send the captured first image information to the control unit 1000, and the control unit 1000 can analyze the first image information and identify error information of the nozzle 1151. The first image information can be ink IK in Figure 4 The ink IK shown is positioned and shaped on a plane on the membrane member 133. The control unit 1000 can identify whether the nozzle 1151 is functioning properly by detecting error information from the nozzle 1151. This error information from the nozzle 1151 allows analysis of whether the position of the ink IK corresponds to a preset position, whether the volume of the ink IK corresponds to a preset volume, whether the ink IK is present, or whether there are additional ink IKs adjacent to the ink IKs positioned within a specific range of a reference point. As described above, the control unit 1000 can select at least two nozzles 1151 from among multiple nozzles 1151 for use based on the analysis results of the first image information. For each column, the control unit 1000 can select at least one nozzle 1151 for use. For example, the first image information can be analyzed to determine if, in addition to unusable nozzles 1151 (such as when ink IK is not discharged from one of the multiple nozzles 1151 arranged in a row, or when the amount of ink IK discharged is small), when the location of the discharged ink IK is not within a preset range, the adjacent nozzle 1151 can be selected if it is functioning normally. In this case, the control unit 1000 can select at least one of the multiple nozzles 1151 that discharge ink IK in a discharge area (not shown).

[0069] The control unit 1000 can calculate the first impact position IP1 of the actual impact of the ink IK based on a reference position (or reference point, e.g., alignment mark AR) for each ink IK in the first image information. For example, the control unit 1000 can obtain the first impact position IP1 of the ink IK relative to the reference position of the alignment mark AR in the first image information. The control unit 1000 can calculate a first spraying error (x2-x1, y2-y1) for each ink IK, which is the difference between a preset first set position TR1 and the first impact position IP1 of the actual impact of the ink IK. The control unit 1000 can store the first set position TR1 relative to the reference position and calculate the first impact position IP1 in the form of coordinates relative to the reference position. The first set position TR1 can be a preset position at which the ink IK discharged from the nozzle 1151 impacts the membrane member 133 based on the position of the corresponding inspection table 131, the position of the head unit 151, and the position of the corresponding nozzle 1151 within the head unit 151. The first injection error (x2-x1, y2-y1) (i.e., the test injection error) may include a first test error component (x2-x1) in a first direction (e.g., the x-axis direction) and a second test error component (y2-y1) in a second direction (e.g., the y-axis direction).

[0070] The control unit 1000 can select at least one nozzle 1151 that has the smallest difference between the first set position TR1 and the first impact position IP1 for use. For example, the control unit 1000 can select the nozzle 1151 with the smallest first injection error (x2-x1, y2-y1) as the nozzle 1151 to be used. For example, the control unit 1000 can select the nozzle 1151 with the smallest straight-line distance between the first set position TR1 and the first impact position IP1 for use. In another embodiment, the control unit 1000 can select the nozzle 1151 with the smallest of the first test error component (x2-x1) and the second test error component (y2-y1) for use. In an embodiment, at least two of the plurality of nozzles 1151 can be used in one area (e.g., the planar area of ​​a code element). For example, among the plurality of nozzles 1151 supplying ink IK to one area, the control unit 1000 can sequentially select nozzles 1151 for use starting from the nozzle 1151 with the smallest difference between the first set position TR1 and the first impact position IP1. In an embodiment, the control unit 1000 can perform the above process in each of the plurality of nozzles 1151 arranged in each column.

[0071] When the above process is completed, the control unit 1000 can generate first printing information by determining the movement of the head unit 151 and the stage 12, based on the size of the substrate, the distance between the substrate and the sub-pixel, and the first jetting error (x2-x1, y2-y1) of multiple nozzles 1151, to provide ink IK to each sub-pixel (e.g., the emission area) in an inkjet manner. The first printing information, as well as the second, third, and fourth printing information described below, may include the position of the stage 12 on which the display substrate DS is placed, the position of the ink discharge unit 15, and the emission timing of each ink discharge IK from the multiple nozzles 1151.

[0072] The control unit 1000 can control the first moving unit 172 to set the head unit 151 to face the stage 12. The camera unit 16 can capture images of alignment marks (not shown) on the display substrate DS, and the head unit 151 can be configured such that the alignment marks and the head unit 151 correspond to an initial position.

[0073] The control unit 1000 can first dispense ink IK onto the display substrate DS on the stage 12 based on the first printing information. The control unit 1000 can keep the stage 12 in a stopped state.

[0074] Camera unit 16 can capture images of ink IK disposed on display substrate DS. In this embodiment, the method of capturing ink IK by camera unit 16 is the same as or similar to the method described above, and redundant descriptions thereof are omitted.

[0075] The second image information captured by the camera unit 16 can be sent to the control unit 1000. Although not shown in the figures, the second image information may include the planar position and shape of the ink IK disposed on the display substrate DS. The second image information may be similar to the first image information. Based on the second image information, the control unit 1000 can identify whether the ink IK is disposed at a preset position. For example, the control unit 1000 can calculate a second impact position IP2 based on a reference position (or reference point, e.g., alignment mark AR), which is the actual position of the ink IK disposed on the display substrate DS. The control unit 1000 can calculate a second jetting error (x4-x3, y4-y3) based on the first printing information and the second image information. For example, the control unit 1000 can compare the second setting position TR2 of the ink IK to be disposed based on the first printing information with the second impact position IP2 obtained from the second image information, and calculate the second jetting error (x4-x3, y4-y3), which is the degree to which the second setting position TR2 and the second impact position IP2 are different from each other. Similar to the first set position TR1 and the first impact position IP1, the second set position TR2 and the second impact position IP2 can be in the form of coordinates based on a reference position. For example, the second set position TR2 can be obtained from the first printing information, and the second impact position IP2 can be obtained from the second image information. For example, the second set position TR2 (x3, y3) relative to a reference point of the alignment mark AR can be obtained from the first printing information, and the second impact position IP2 can be (x4, y4) relative to the reference point of the alignment mark AR and can be obtained from the second image information. The second jetting error (x4-x3, y4-y3) described above can include a first jetting error component (x4-x3) and a second jetting error component (y4-y3), where the first jetting error component (x4-x3) is the difference between the second set position TR2 and the second impact position IP2 in a first direction (e.g., the x-axis direction), and the second jetting error component (y4-y3) is the difference between the second set position TR2 and the second impact position IP2 in a second direction (e.g., the y-axis direction). The control unit 1000 can calculate the total volume of ink IK set in an impact area based on the second image information.

[0076] The control unit 1000 can determine whether the first jetting error component (x4-x3) is within a specific range. When the control unit 1000 determines that the first jetting error component (x4-x3) is within the specific range, the control unit 1000 can use the nozzle 1151 that previously dispensed ink IK based on the first printing information. The nozzle 1151 that previously dispensed ink IK with the first jetting error component (x4-x3) within the specific range can be referred to as the existing nozzle 1151.

[0077] When using the existing nozzle 1151, the control unit 1000 can generate second printing information by applying a second jetting error (x4-x3, y4-y3) to the first printing information and changing the emission timing of the nozzle 1151. For example, the control unit 1000 can generate the second printing information based on a first jetting error component (x4-x3) as an error in a first direction (e.g., the x-axis direction) and the volume of the impact set in an impact zone. This second printing information is used to change the position of the head unit 151 that begins to emit ink IK from the nozzle 1151, as well as the travel distance and speed of the head unit 151 in the first direction (e.g., the x-axis direction), to be different from before. For example, the control unit 1000 can set the position and travel distance of the head unit 151 that begins to emit ink IK to be different from before based on the first jetting error component (x4-x3). For example, when the first jetting error component (x4-x3) has a positive value, the second impact position IP2 may not be set at the second set position TR2, but may be set after the second set position TR2 in the moving direction of the head unit 151. The control unit 1000 may generate second printing information in which, compared with the existing set position, the position of the head unit 151 that begins to dispense ink IK is pushed backward relative to the moving direction of the head unit 151. When the first jetting error component (x4-x3) has a negative value, compared with the second set position TR2, in the first direction, the second impact position IP2 may be set before passing through the second set position TR2 in the moving direction of the head unit 151. The control unit 1000 may generate second printing information in which, compared with the existing set position, the position of the head unit 151 that begins to dispense ink IK is moved forward relative to the moving direction of the head unit 151.

[0078] Based on a second jetting error component (y4-y3) that is an error in a second direction (e.g., the y-axis direction), the control unit 1000 can change and store the emission timing of the nozzles 1151 set in the first printing information. For example, when the second jetting error component (y4-y3) has a positive value, the control unit 1000 can determine that the second impact position IP2 is set later than the second set position TR2 (i.e., a position set after the second set position TR2) relative to the movement direction of the stage 12. The control unit 1000 can generate second printing information in which the position of the display substrate DS placed on the stage 12 is changed to a new position such that the second impact position IP2 corresponds to the second set position TR2. The new position of the ink IK is obtained by adding a certain distance to the preset position of the stage 12 in the movement direction of the stage 12.

[0079] When the second jetting error component (y4-y3) has a negative value, the control unit 1000 can determine that the second impact position IP2 is set before the second preset position TR2 (i.e., a position set before the second preset position TR2) relative to the movement direction of the stage 12. The control unit 1000 can generate second printing information in which the position of the ink discharge IK of the stage 12 is changed to a new position of the stage 12 such that the second impact position IP2 corresponds to the second preset position TR2. The new position of the ink IK is obtained by subtracting a certain distance from the preset position of the stage 12 in the movement direction of the stage 12.

[0080] The control unit 1000 can determine, based on second printing information, the common position where ink IK must be discharged from the plurality of nozzles 1151 of the printing station 12. The common position of the printing station 12 can be determined by the minimum moving distance of the printing station 12 or the moving speed of the printing station 12. The control unit 1000 can compare the common position of the printing station 12 with the second impact position IP2. To resolve the difference between the common position of the printing station 12 and the second impact position IP2, the control unit 1000 can adjust the timing of ink discharge from each nozzle 1151. For example, at least one of the plurality of nozzles 1151 may discharge ink IK after a certain time elapsed from or before the common position of the printing station 12, instead of discharging ink IK at the common position of the printing station 12. In this case, the control unit 1000 can perform the operations described above individually for each nozzle 1151. For example, the timing of ink discharge from at least one of the plurality of nozzles 1151 may become different from the timing of ink discharge from another of the plurality of nozzles 1151. The control unit 1000 can control the variation in the timing of ink discharge from the nozzles 1151 by applying current to the nozzles 1151. In this embodiment, each nozzle 1151 includes a piezoelectric element, and the timing of ink emission IK can be varied depending on the applied current. For example, the timing of applying current to the piezoelectric element can determine the emission timing of the nozzle 1151. By adjusting the emission timing, ink IK can be emitted at precise locations.

[0081] When the first injection error component (x4-x3) is determined to be outside a specific range, the control unit 1000 can change the existing nozzle 1151 to a new nozzle 1151. As described above, the method by which the control unit 1000 changes the existing nozzle 1151 to a new nozzle 1151 can begin by selecting the nozzle 1151 with the smallest first injection error. The first injection error is calculated using first image information. The control unit 1000 can select at least one of a plurality of nozzles 1151 that is superimposed on a discharge area superimposed on the existing nozzle 1151 as the new nozzle 1151. When a new nozzle 1151 is selected, the control unit 1000 can change the first printing information to third printing information corresponding to the new nozzle 1151. The control unit 1000 can store multiple pieces of printing information as a printing method based on the selection of the nozzle 1151. The control unit 1000 can select one of the multiple pieces of information based on the selection of the new nozzle 1151.

[0082] As described above, the control unit 1000 can move the head unit 151 or the stage 12 a certain distance from its initial position based on the third printing information, and then recalculate the second jetting error (x4-x3, y4-y3). The control unit 1000 can perform operations similar to those of maintaining the first printing information as is, changing the first printing information to the second printing information, or changing the first printing information to the third printing information.

[0083] When the above process is completed, the control unit 1000 can control the control drive unit 19 and the head unit 151 based on the first printing information, the second printing information, or the third printing information to discharge ink IK onto the display substrate DS on the stage 12 while moving the stage 12 in a second direction (e.g., the y-axis direction). The stage drive unit 19 can detect the position of the stage 12 according to the operating position and send the detected position of the stage 12 to the control unit 1000. The control unit 1000 can compare the sent position of the stage 12 with the position of the stage 12 discharging ink IK from each nozzle 1151 stored in the first printing information, and control the head unit 151 to discharge ink IK from the nozzles 1151.

[0084] The control unit 1000 can change the first printing information to the second printing information and control the first moving unit 172 to move the head unit 151 from the first region 1A to the second region 2A. Thereafter, as described above, ink IK can be dispensed onto the display substrate DS, and the above operations can be performed again.

[0085] Upon completion of the above process, the control unit 1000 can control the first moving unit 172 to move the head unit 151 from the second region 2A to the first region 1A. Thereafter, the control unit 1000 can dispense ink IK onto the membrane member 133 and then obtain first image information. The control unit 1000 can determine whether to use the previously used nozzle 1151 based on the re-obtained first image information. In this case, the determination of whether to use the nozzle 1151 is the same as or similar to the steps described above for selecting the nozzle 1151 for use, therefore its detailed description is omitted.

[0086] When an existing nozzle 1151 is replaced with a new nozzle 1151 based on the first image information, the control unit 1000 can change the first printing information, the second printing information, or the third printing information to the fourth printing information based on the first spraying error (x2-x1, y2-y1). In this case, as described above, when using an existing nozzle 1151 among multiple nozzles 1151, the control unit 1000 can change the first printing information to the second printing information only for the corresponding nozzle 1151, and when using a new nozzle 1151 among multiple nozzles 1151, the control unit 1000 can change the first printing information to the fourth printing information only for the corresponding nozzle 1151.

[0087] Subsequently, the head unit 151 can dispense ink IK onto the display substrate DS, the camera unit 16 can acquire second image information, and the control unit 1000 can determine, based on the second image information, whether to retain the fourth printing information or to perform an operation such as changing the first printing information to the second printing information or changing the first printing information to the third printing information.

[0088] The operations described above can be repeated.

[0089] Therefore, in the apparatus 1 for manufacturing a display device and the method for manufacturing a display device, ink IK can be discharged in a precise pattern by individually controlling the nozzles 1151 arranged in each column. Furthermore, in the apparatus 1 for manufacturing a display device and the method for manufacturing a display device, by individually controlling each nozzle 1151, as much ink IK as possible can be discharged corresponding to a preset impact position.

[0090] In the apparatus 1 for manufacturing a display device and the method for manufacturing a display device, a display device with a precise pattern can be manufactured quickly and accurately.

[0091] Figure 6 This is a perspective view showing the display device 2 according to an embodiment.

[0092] Reference Figure 6The display device 2 can display an image. The display device 2 can provide the image through a plurality of sub-pixels disposed in the display area DA. Each of the plurality of sub-pixels of the display device 2 can be an area in which light of a specific color can be emitted. The display device 2 can display the image by using light emitted from the plurality of sub-pixels. For example, the sub-pixels can emit one of red, green, and blue light. In another example, the sub-pixels can emit one of red, green, blue, and white light.

[0093] The non-display area NDA may at least partially surround the display area DA. In an embodiment, the non-display area NDA may completely surround the display area DA. The non-display area NDA may be a region on which no image is provided.

[0094] like Figure 6 As shown, the display area DA can have a polygonal shape including rectangles. For example, the display area DA can have a rectangular shape with a horizontal length greater than its vertical length, a rectangular shape with a horizontal length less than its vertical length, or a square shape. Optionally, the display area DA can have various shapes such as ellipses and circles. In an embodiment, the display device 2 may include a display panel 10, a color conversion panel 20, and a fill layer 30. The display panel 10, the fill layer 30, and the color conversion panel 20 may be stacked in the thickness direction (e.g., the z-axis direction). The display device 2 may also include a cover window disposed on the color conversion panel 20, a data driver mounted on the display panel 10 or a display circuit board, a display circuit board connected to the display panel 10, components disposed on the display circuit board, a bracket supporting the display panel 10, a main circuit board connected to the display circuit board, a battery, and / or a lower cover disposed under the bracket. In this case, the cover window, data driver, display circuit board, components, bracket, main circuit board, battery, and lower cover may be the same as or similar to those described below.

[0095] Display device 2 is a device for displaying moving or still images, and can be used not only in portable electronic devices such as mobile phones, smartphones, tablet PCs, mobile communication terminals, e-notebooks, e-book readers, portable multimedia players (PMPs), navigation devices, and ultra-mobile PCs (UMPCs), but also as a display screen for various products such as televisions, laptops, monitors, billboards, and Internet of Things (IoT) devices. Furthermore, display device 2 can also be used in wearable devices such as smartwatches, smartwatch phones, glasses displays, and head-mounted displays (HMDs). Additionally, display device 2 can be used as a vehicle's dashboard, a central information display (CID) mounted on a center panel or instrument cluster, an interior mirror display replacing the vehicle's side mirrors, and / or a display mounted on the rear surface of the front seats to provide entertainment for passengers in the rear seats of the vehicle. Display device 2 can be used as a light source, illumination, medical device (e.g., electronic thermometer, blood pressure monitor, blood glucose monitor, pulse measuring device, pulse wave measuring device, electrocardiogram display device, ultrasound diagnostic device and endoscope display device), fish finder, various measuring devices, instruments (e.g., instruments for aircraft and ships) or projector.

[0096] Figure 7 This is a cross-sectional view showing the display device 2 according to an embodiment.

[0097] Reference Figure 7 The display device 2 may include a first sub-pixel PX1, a second sub-pixel PX2, and a third sub-pixel PX3. The first sub-pixel PX1, the second sub-pixel PX2, and the third sub-pixel PX3 may be sub-pixels that emit light of different colors from each other. For example, the first sub-pixel PX1 may emit red light Lr, the second sub-pixel PX2 may emit green light Lg, and the third sub-pixel PX3 may emit blue light Lb.

[0098] At least one of the first sub-pixel PX1, the second sub-pixel PX2, and the third sub-pixel PX3 described above can be set to multiple. In the following text, for ease of description, the case where each of the first sub-pixel PX1, the second sub-pixel PX2, and the third sub-pixel PX3 is set to multiple is mainly described.

[0099] Display device 2 may include display panel 10, color conversion panel 20, and fill layer 30. Display panel 10 may include a lower substrate 100 and light-emitting elements LE. For example, the light-emitting element LE may be an organic light-emitting diode (OLED). In an embodiment, each of the first sub-pixel PX1, the second sub-pixel PX2, and the third sub-pixel PX3 may include a light-emitting element LE. For example, the first sub-pixel PX1 may include a first light-emitting element LE1. The first light-emitting element LE1 may be a first organic light-emitting diode (OLED). The second sub-pixel PX2 may include a second light-emitting element LE2. The second light-emitting element LE2 may be a second organic light-emitting diode (OLED). The third sub-pixel PX3 may include a third light-emitting element LE3. The third light-emitting element LE3 may be a third organic light-emitting diode (OLED).

[0100] The first light-emitting element LE1, the second light-emitting element LE2, and the third light-emitting element LE3 can emit light of the same color. In an embodiment, the first light-emitting element LE1, the second light-emitting element LE2, and the third light-emitting element LE3 can emit blue light.

[0101] The color conversion panel 20 may include an upper substrate 400 and a filter unit FP. In an embodiment, the filter unit FP may include a first filter unit FP1, a second filter unit FP2, and a third filter unit FP3. Light emitted from the first light-emitting element LE1 can pass through the first filter unit FP1 and be emitted as red light Lr. Light emitted from the second light-emitting element LE2 can pass through the second filter unit FP2 and be emitted as green light Lg. Light emitted from the third light-emitting element LE3 can pass through the third filter unit FP3 and be emitted as blue light Lb.

[0102] A filter unit FP may include a functional layer and a color filter layer. In an embodiment, the functional layer may include a first quantum dot layer, a second quantum dot layer, and a transmission layer. In an embodiment, the color filter layer may include a first color filter, a second color filter, and a third color filter. A first filter unit FP1 may include a first quantum dot layer and a first color filter. A second filter unit FP2 may include a second quantum dot layer and a second color filter. A third filter unit FP3 may include a transmission layer and a third color filter.

[0103] The color filter unit FP can be directly positioned on the upper substrate 400. The phrase "directly positioned on the upper substrate 400" can refer to manufacturing the color conversion panel 20 by directly forming the first color filter, the second color filter, and the third color filter on the upper substrate 400. The color conversion panel 20 can then be bonded to the display panel 10, such that the first color filter unit FP1, the second color filter unit FP2, and the third color filter unit FP3 face the first light-emitting element LE1, the second light-emitting element LE2, and the third light-emitting element LE3, respectively.

[0104] A filler layer 30 may be disposed between the display panel 10 and the color conversion panel 20. The filler layer 30 may bond the display panel 10 and the color conversion panel 20 to each other. In embodiments, the filler layer 30 may include a thermosetting filler or a photocurable filler. Although not shown, either the display panel 10 or the color conversion panel 20 may include columnar spacers. For example, the display panel 10 may include columnar spacers protruding toward the color conversion panel 20. In another example, the color conversion panel 20 may include columnar spacers protruding toward the display panel 10. Therefore, the plurality of light-emitting elements LE and the plurality of filter units FP can be maintained at a certain distance, and the display device 2 can maintain uniform brightness according to its position.

[0105] Figure 8 and Figure 9 This is a cross-sectional view showing the display device 2 according to an embodiment. Figure 8 and Figure 9 It is along Figure 6 The cross-sectional view of display device 2 taken by line A-A'.

[0106] Reference Figure 8 The display device 2 may include a first sub-pixel PX1, a second sub-pixel PX2, and a third sub-pixel PX3 in the display area DA. The first sub-pixel PX1, the second sub-pixel PX2, and the third sub-pixel PX3 can produce different colors. For example, the first sub-pixel PX1 can produce red light, the second sub-pixel PX2 can produce green light, and the third sub-pixel PX3 can produce blue light.

[0107] In another embodiment, the display device 2 may include more sub-pixels. Figure 8 and Figure 9 In the first embodiment, the first sub-pixel PX1, the second sub-pixel PX2, and the third sub-pixel PX3 are adjacent to each other. However, in another embodiment, the first sub-pixel PX1, the second sub-pixel PX2, and the third sub-pixel PX3 may not be adjacent sub-pixels.

[0108] The display device 2 may include a display panel 10, a color conversion panel 20, and a fill layer 30. The display panel 10 may include a lower substrate 100 and a light-emitting element disposed on the lower substrate 100 and including an intermediate layer 220. The light-emitting element may be an organic light-emitting diode (OLED). In an embodiment, the display panel 10 may include a first organic light-emitting diode (OLED1), a second organic light-emitting diode (OLED2), and a third organic light-emitting diode (OLED3) disposed on the lower substrate 100. The first organic light-emitting diode (OLED1), the second organic light-emitting diode (OLED2), and the third organic light-emitting diode (OLED3) may include the intermediate layer 220.

[0109] The stacked structure of the display panel 10 is described in detail below. In an embodiment, the display panel 10 may include a lower substrate 100, a first buffer layer 111, a bias electrode BSM, a second buffer layer 112, a thin-film transistor (TFT), a storage capacitor Cst, a gate insulating layer 113, an interlayer insulating layer 115, a planarization layer 118, a light-emitting element, a pixel defining layer 119, and an encapsulation layer 300. The thin-film transistor (TFT) may include a semiconductor layer Act, a gate electrode GE, a source electrode SE, and a drain electrode DE. The storage capacitor Cst may include a first electrode CE1 and a second electrode CE2.

[0110] The lower substrate 100 may comprise a material having glass, ceramic, metallic, or flexible or bendable properties. When the lower substrate 100 has flexible or bendable properties, it may comprise a polymer resin such as polyethersulfone, polyacrylate, polyetherimide, polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyarylate, polyimide, polycarbonate, and cellulose acetate propionate. The lower substrate 100 may have a single-layer or multi-layer structure of the above materials, and when the lower substrate 100 comprises a multi-layer structure, it may further comprise an inorganic layer. In embodiments, the lower substrate 100 may have an organic / inorganic / organic material structure.

[0111] A barrier layer (not shown) may also be included between the lower substrate 100 and the first buffer layer 111. The barrier layer can prevent or reduce the penetration of impurities from the lower substrate 100 into the semiconductor layer Act. The barrier layer may include inorganic materials such as oxides or nitrides, organic materials, and organic / inorganic composites, and may have a single-layer or multi-layer structure of inorganic and organic materials.

[0112] A bias electrode BSM can be disposed on the first buffer layer 111 to correspond to the thin-film transistor (TFT). In an embodiment, a voltage can be applied to the bias electrode BSM. Furthermore, the bias electrode BSM can prevent external light from reaching the semiconductor layer Act. Therefore, the characteristics of the thin-film transistor (TFT) can be stabilized. In some embodiments, the bias electrode BSM can be omitted.

[0113] The second buffer layer 112 may be disposed on the first buffer layer 111. The semiconductor layer Act may comprise amorphous silicon or polycrystalline silicon. In another embodiment, the semiconductor layer Act may comprise an oxide of at least one selected from the group consisting of indium (In), gallium (Ga), tin (Sn), zirconium (Zr), vanadium (V), hafnium (Hf), cadmium (Cd), germanium (Ge), chromium (Cr), titanium (Ti), aluminum (Al), cesium (Cs), cerium (Ce), and zinc (Zn). In some embodiments, the semiconductor layer Act may be a Zn oxide-based material, which may be a Zn oxide, an In-Zn oxide, or a Ga-In-Zn oxide. In another embodiment, the semiconductor layer Act may be an In-Ga-Zn-O (IGZO), In-Sn-Zn-O (ITZO), or In-Ga-Sn-Zn-O (IGTZO) semiconductor in which metals such as In, Ga, and Sn are contained in zinc oxide (ZnO). The semiconductor layer Act may include a channel region, a source region, and a drain region, wherein the source region and the drain region are respectively located on opposite sides of the channel region. The semiconductor layer Act may include one or more layers.

[0114] The gate electrode GE can be disposed on the semiconductor layer Act, with a gate insulating layer 113 therebetween. The gate electrode GE can be at least partially stacked with the semiconductor layer Act. The gate electrode GE can include molybdenum (Mo), aluminum (Al), copper (Cu), or titanium (Ti), and can have one or more layers. For example, the gate electrode GE can be a single Mo layer. The first electrode CE1 of the storage capacitor Cst can be disposed on the same layer on which the gate electrode GE is disposed. The first electrode CE1 and the gate electrode GE can include the same material.

[0115] exist Figure 8 and Figure 9 In this configuration, the gate electrode GE of the thin-film transistor (TFT) and the first electrode CE1 of the storage capacitor Cst are set separately. However, the storage capacitor Cst can be stacked with the TFT. In this case, the gate electrode GE of the TFT can be used as the first electrode CE1 of the storage capacitor Cst.

[0116] The interlayer insulating layer 115 can be configured to cover the first electrode CE1 of the gate electrode GE and the storage capacitor Cst. The interlayer insulating layer 115 may include silicon oxide (SiO2) or silicon nitride (SiN). x ), silicon oxynitride (SiON), aluminum oxide (Al2O3), titanium oxide (TiO2), tantalum oxide (Ta2O5), hafnium oxide (HfO2) or zinc oxide (ZnO) x Zinc oxide (ZnO) x This may include zinc oxide (ZnO) and / or zinc peroxide (ZnO2).

[0117] The source electrode SE, drain electrode DE, and the second electrode CE2 of the storage capacitor Cst can be disposed on the interlayer insulating layer 115. The source electrode SE, drain electrode DE, and the second electrode CE2 of the storage capacitor Cst can comprise a conductive material containing Mo, Al, Cu, or Ti, and can be one or more layers comprising these materials. For example, the second electrode CE2, source electrode SE, and drain electrode DE can have a Ti / Al / Ti multilayer structure. The source electrode SE and drain electrode DE can be connected to the source or drain region of the semiconductor layer Act, respectively, through contact holes.

[0118] The second electrode CE2 of the storage capacitor Cst can be stacked with the first electrode CE1, with an interlayer insulating layer 115 between them, to form the storage capacitor Cst. The interlayer insulating layer 115 can be used as the dielectric layer of the storage capacitor Cst.

[0119] A planarization layer 118 can be disposed on the source electrode SE, the drain electrode DE, and the second electrode CE2 of the storage capacitor Cst. In the planarization layer 118, a film comprising organic materials can be formed as one or more layers to provide a flat upper surface. The planarization layer 118 can include general polymers such as benzocyclobutene (BCB), polyimide, hexamethyldisiloxane (HMDSO), polymethyl methacrylate (PMMA), and polystyrene (PS), polymer derivatives having phenolic groups, acrylic polymers, imide polymers, aryl ether polymers, amide polymers, fluorinated polymers, p-xylene polymers, vinyl alcohol polymers, and any blends thereof.

[0120] The light-emitting element can be disposed on the planarization layer 118. The light-emitting element may include a pixel electrode, an intermediate layer 220, and a counter electrode 230. In an embodiment, a first organic light-emitting diode (OLED1), a second organic light-emitting diode (OLED2), and a third organic light-emitting diode (OLED3) can be disposed on the planarization layer 118. The first OLED1, the second OLED2, and the third OLED3 may each include a first sub-pixel electrode 210R, a second sub-pixel electrode 210G, and a third sub-pixel electrode 210B. In an embodiment, the first OLED1, the second OLED2, and the third OLED3 may collectively include the intermediate layer 220 and the counter electrode 230.

[0121] The first sub-pixel electrode 210R, the second sub-pixel electrode 210G, and the third sub-pixel electrode 210B can be disposed on the planarization layer 118. The first sub-pixel electrode 210R, the second sub-pixel electrode 210G, and the third sub-pixel electrode 210B can be connected to a thin-film transistor (TFT). The first sub-pixel electrode 210R, the second sub-pixel electrode 210G, and the third sub-pixel electrode 210B can be (semi-)transparent electrodes or reflective electrodes. In some embodiments, the first sub-pixel electrode 210R, the second sub-pixel electrode 210G, and the third sub-pixel electrode 210B can have a reflective layer and a transparent or semi-transparent electrode layer formed on the reflective layer, wherein the reflective layer includes silver (Ag), magnesium (Mg), Al, platinum (Pt), palladium (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), Cr, and any compounds or mixtures thereof. The transparent or semi-transparent electrode layer may have at least one selected from the group consisting of indium tin oxide (ITO), indium zinc oxide (IZO), ZnO, In2O3, IGO, and AZO. In some embodiments, the first sub-pixel electrode 210R, the second sub-pixel electrode 210G, and the third sub-pixel electrode 210B may have a three-layer structure of ITO / Ag / ITO.

[0122] A pixel defining layer 119 may be disposed on the planarization layer 118. The pixel defining layer 119 may have openings that expose the central portions of the first sub-pixel electrode 210R, the second sub-pixel electrode 210G, and the third sub-pixel electrode 210B, respectively. The pixel defining layer 119 may cover the edges of each of the first sub-pixel electrode 210R, the second sub-pixel electrode 210G, and the third sub-pixel electrode 210B. The pixel defining layer 119 may increase the distance between the edges of the first sub-pixel electrode 210R, the second sub-pixel electrode 210G, and the third sub-pixel electrode 210B and the counter electrode 230 above the first sub-pixel electrode 210R, the second sub-pixel electrode 210G, and the third sub-pixel electrode 210B, thereby preventing arcing at the edges of the first sub-pixel electrode 210R, the second sub-pixel electrode 210G, and the third sub-pixel electrode 210B. The pixel defining layer 119 may include one or more organic insulating materials selected from the group consisting of polyimide, polyamide, acrylic resin, BCB and phenolic resin, and may be formed by, for example, spin coating.

[0123] The intermediate layer 220 of the first organic light-emitting diode (OLED1), the second organic light-emitting diode (OLED2), and the third organic light-emitting diode (OLED3) may include an emission layer, which is an organic material comprising a fluorescent material or a phosphorescent material emitting one of red, green, blue, and white light. In addition to various organic materials, the intermediate layer 220 may also include metal-containing compounds such as organometallic compounds and inorganic materials such as quantum dots. The intermediate layer 220 may be a low molecular weight organic material or a polymeric organic material. Functional layers such as a hole transport layer (HTL), a hole injection layer (HIL), an electron transport layer (ETL), and an electron injection layer (EIL) may optionally be further disposed above and below the emission layer of the intermediate layer 220. Figure 8 and Figure 9 In this embodiment, the intermediate layer 220 is integrally formed as a single body, covering the first sub-pixel electrode 210R, the second sub-pixel electrode 210G, and the third sub-pixel electrode 210B. However, one or more embodiments are not limited to this, and various modifications can be made, such as configuring the intermediate layer 220 to correspond to each of the first sub-pixel electrode 210R, the second sub-pixel electrode 210G, and the third sub-pixel electrode 210B.

[0124] The intermediate layer 220 may include a layer integrally formed over the first sub-pixel electrode 210R, the second sub-pixel electrode 210G, and the third sub-pixel electrode 210B. However, if desired, the intermediate layer 220 may include a layer patterned to correspond to each of the first sub-pixel electrode 210R, the second sub-pixel electrode 210G, and the third sub-pixel electrode 210B. In any case, the intermediate layer 220 may include a first color emitting layer. The first color emitting layer may be integrally formed over the first sub-pixel electrode 210R, the second sub-pixel electrode 210G, and the third sub-pixel electrode 210B, and if desired, may be patterned to correspond to each of the first sub-pixel electrode 210R, the second sub-pixel electrode 210G, and the third sub-pixel electrode 210B. The first color emitting layer may emit light in a first wavelength band, for example, light with a wavelength between about 450 nm and about 495 nm.

[0125] Counter electrode 230 may be disposed on intermediate layer 220 to correspond to the first sub-pixel electrode 210R, the second sub-pixel electrode 210G, and the third sub-pixel electrode 210B. Counter electrode 230 may be integrally disposed as a single body among multiple organic light-emitting diodes. In some embodiments, counter electrode 230 may be a transparent or translucent electrode and may comprise a metal thin film having a low work function, including lithium (Li), calcium (Ca), Al, Ag, Mg, and any compounds or mixtures thereof. Counter electrode 230 may comprise multilayer structures such as lithium fluoride (LiF) / Ca and LiF / Al. Furthermore, a transparent conductive oxide film including ITO, IZO, ZnO, or In2O3 may be further disposed on the metal thin film.

[0126] In this embodiment, first light can be generated and emitted to the outside in a first emission region EA1 of a first organic light-emitting diode (OLED1). The first emission region EA1 can be defined as the portion of a first sub-pixel electrode 210R exposed by an opening defined in the pixel defining layer 119. Second light can be generated and emitted to the outside in a second emission region EA2 of a second organic light-emitting diode (OLED2). The second emission region EA2 can be defined as the portion of a second sub-pixel electrode 210G exposed by an opening defined in the pixel defining layer 119. Third light can be generated and emitted to the outside in a third emission region EA3 of a third organic light-emitting diode (OLED3). The third emission region EA3 can be defined as the portion of a third sub-pixel electrode 210B exposed by an opening defined in the pixel defining layer 119.

[0127] The first emission area EA1, the second emission area EA2, and the third emission area EA3 can be spaced apart from each other. The area of ​​display area DA other than the first emission area EA1, the second emission area EA2, and the third emission area EA3 can be a non-emission area. The first emission area EA1, the second emission area EA2, and the third emission area EA3 can be separated by non-emission areas. In a plan view (i.e., when viewed in a plan view), the first emission area EA1, the second emission area EA2, and the third emission area EA3 can be arranged in a pattern such as stripes and pen tiles. ® Various arrangements can be made. In the plan view, the shapes of the first emission area EA1, the second emission area EA2, and the third emission area EA3 can all be one of the following shapes: polygonal, circular, and elliptical.

[0128] Spacers (not shown) may also be included on the pixel defining layer 119 to prevent the mask from being imprinted. The spacers and the pixel defining layer 119 may be integrally formed as a single unit. For example, the spacers and the pixel defining layer 119 may be formed simultaneously in the same process using a halftone mask process.

[0129] The encapsulation layer 300 can be disposed on the display element and can cover the display element. The first organic light-emitting diode (OLED1), the second organic light-emitting diode (OLED2), and the third organic light-emitting diode (OLED3) can be easily damaged by external moisture or oxygen; the encapsulation layer 300 can cover and protect these elements. The encapsulation layer 300 can cover the display area DA and extend beyond it. The encapsulation layer 300 can include at least one organic encapsulation layer and at least one inorganic encapsulation layer. For example, the encapsulation layer 300 can include a first inorganic encapsulation layer 310, an organic encapsulation layer 320, and a second inorganic encapsulation layer 330.

[0130] Because the first inorganic encapsulation layer 310 extends along the structure beneath it, the upper surface of the first inorganic encapsulation layer 310 may not be flat. The organic encapsulation layer 320 covers the first inorganic encapsulation layer 310, and unlike the first inorganic encapsulation layer 310, the upper surface of the organic encapsulation layer 320 may be substantially flat.

[0131] The first inorganic encapsulation layer 310 and the second inorganic encapsulation layer 330 may include materials such as Al2O3, TiO2, Ta2O5, HfO2, and ZnO. x SiO2, SiN x At least one inorganic material selected from SiON. ZnO x It may include ZnO and / or ZnO2. The organic encapsulation layer 320 may include polymeric materials. Polymeric materials may include acrylic resins, epoxy resins, polyimides, and polyethylene. In an embodiment, the organic encapsulation layer 320 may include acrylates.

[0132] The multi-layer structure of the encapsulation layer 300 described above prevents cracks from forming at the connection between the first inorganic encapsulation layer 310 and the organic encapsulation layer 320, or between the organic encapsulation layer 320 and the second inorganic encapsulation layer 330. This also prevents or reduces the formation of channels for moisture or oxygen to permeate from the outside into the display area DA. Although not shown, other layers, such as a capping layer, can be placed between the first inorganic encapsulation layer 310 and the counter electrode 230 if desired.

[0133] The color conversion panel 20 may include an upper substrate 400, a color filter layer 500, a refractive layer RL, a first capping layer CL1, a dam 600, a functional layer 700, and a second capping layer CL2. The upper substrate 400 may be disposed on the lower substrate 100, and light-emitting elements are disposed therebetween. The upper substrate 400 may be disposed on a first organic light-emitting diode OLED1, a second organic light-emitting diode OLED2, and a third organic light-emitting diode OLED3.

[0134] The upper substrate 400 may include a light-transmitting region CA stacked with a light-emitting element. In an embodiment, the light-transmitting region CA may include a first light-transmitting region CA1, a second light-transmitting region CA2, and a third light-transmitting region CA3. In a plan view, the first light-transmitting region CA1 may be stacked with a first organic light-emitting diode OLED1 and / or a first emitting region EA1. In a plan view, the second light-transmitting region CA2 may be stacked with a second organic light-emitting diode OLED2 and / or a second emitting region EA2. In a plan view, the third light-transmitting region CA3 may be stacked with a third organic light-emitting diode OLED3 and / or a third emitting region EA3.

[0135] The light-transmitting area CA described above can be defined by a color filter. For example, the light-transmitting area CA can represent an area in which only one color filter is provided. In the embodiment, only the first color filter 510 can be provided in the first light-transmitting area CA1. Furthermore, only the second color filter 520 can be provided in the second light-transmitting area CA2. Only the third color filter 530 can be provided in the third light-transmitting area CA3. In this case, the first light-transmitting area CA1 and the second light-transmitting area CA2 can be defined by the third color filter 530. In other words, the first light-transmitting area CA1 and the second light-transmitting area CA2 can be defined by a patterned area that serves as the opening portion of the third color filter 530.

[0136] The upper substrate 400 may comprise glass, metal, or polymeric resin. When the upper substrate 400 has flexible or bendable properties, it may comprise polymeric resins such as polyethersulfone, polyacrylate, polyetherimide, polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyarylate, polyimide, polycarbonate, and cellulose acetate propionate. In embodiments, the upper substrate 400 may have a multilayer structure comprising two layers and an intermediate barrier layer, wherein both layers comprise polymeric resins as described above, and the barrier layer comprises materials such as SiO2 and SiN. x Inorganic materials such as SiON.

[0137] A color filter layer 500 may be disposed on the lower surface of the upper substrate 400 in a direction from the upper substrate 400 toward the lower substrate 100. The color filter layer 500 may include a first color filter 510, a second color filter 520, and a third color filter 530. The first color filter 510 may be disposed in a first light-transmitting region CA1. The second color filter 520 may be disposed in a second light-transmitting region CA2. The third color filter 530 may be disposed in a third light-transmitting region CA3. The first color filter 510, the second color filter 520, and the third color filter 530 may include a photosensitive resin material. Each of the first color filter 510, the second color filter 520, and the third color filter 530 may include a dye that exhibits a unique color. The first color filter 510 can allow light with wavelengths from about 630 nm to about 780 nm to pass through, the second color filter 520 can allow light with wavelengths from about 495 nm to about 570 nm to pass through, and the third color filter 530 can allow light with wavelengths from about 450 nm to about 495 nm to pass through.

[0138] The color filter layer 500 can reduce the reflection of external light in the display device 2. For example, when external light reaches the first color filter 510, only light of the preset wavelength described above can pass through the first color filter 510, and light of other wavelengths can be absorbed by the first color filter 510. Therefore, of the external light incident on the display device 2, only light of the preset wavelength can pass through the first color filter 510, and some of the light passing through the first color filter 510 can be reflected from the counter electrode 230 and / or the first sub-pixel electrode 210R below it and emitted to the outside. Because only a portion of the external light incident on the location where the first sub-pixel PX1 is positioned is reflected to the outside, the reflection of external light can be reduced. The above description can also be applied to the second color filter 520 and the third color filter 530.

[0139] The first color filter 510, the second color filter 520, and the third color filter 530 can be stacked on top of each other. The first color filter 510, the second color filter 520, and the third color filter 530 can be stacked between one of the light-transmitting regions CA and the other of the light-transmitting region CA. For example, the first color filter 510, the second color filter 520, and the third color filter 530 can be stacked between the first light-transmitting region CA1 and the second light-transmitting region CA2. In this case, the third color filter 530 can be disposed between the first light-transmitting region CA1 and the second light-transmitting region CA2. The first color filter 510 can extend from the first light-transmitting region CA1 and be stacked with the third color filter 530. The second color filter 520 can extend from the second light-transmitting region CA2 and be stacked with the third color filter 530.

[0140] The first color filter 510, the second color filter 520, and the third color filter 530 can be stacked on top of each other between the second light-transmitting region CA2 and the third light-transmitting region CA3. The first color filter 510 can be disposed between the second light-transmitting region CA2 and the third light-transmitting region CA3. The second color filter 520 can extend from the second light-transmitting region CA2 and be stacked with the first color filter 510. The third color filter 530 can extend from the third light-transmitting region CA3 and be stacked with the first color filter 510.

[0141] The first color filter 510, the second color filter 520, and the third color filter 530 can be stacked on top of each other between the third light-transmitting region CA3 and the first light-transmitting region CA1. The second color filter 520 can be disposed between the third light-transmitting region CA3 and the first light-transmitting region CA1. The third color filter 530 can extend from the third light-transmitting region CA3 and be stacked with the second color filter 520. The first color filter 510 can extend from the first light-transmitting region CA1 and be stacked with the second color filter 520.

[0142] The first color filter 510, the second color filter 520, and the third color filter 530 can be stacked on top of each other to form a light-blocking unit BP. Therefore, even without individual light-blocking components, the color filter layer 500 can prevent or reduce color mixing.

[0143] In this embodiment, the third color filter 530 may be first stacked on the upper substrate 400. This is because external light incident on the outside of the upper substrate 400 is partially absorbed by the third color filter 530, thereby reducing the reflectivity of the display device 2, and very little light reflected by the third color filter 530 is visible to the user.

[0144] A refractive layer RL can be disposed in a light-transmitting region CA. The refractive layer RL can be disposed in each of the first light-transmitting region CA1, the second light-transmitting region CA2, and the third light-transmitting region CA3. The refractive layer RL can include an organic material. In an embodiment, the refractive index of the refractive layer RL can be less than the refractive index of the first capping layer CL1. In an embodiment, the refractive index of the refractive layer RL can be less than the refractive index of the color filter layer 500. Therefore, the refractive layer RL can focus light.

[0145] A first capping layer CL1 may be disposed on the refractive layer RL and the color filter layer 500. In an embodiment, the first capping layer CL1 may be disposed between the color filter layer 500 and the functional layer 700. The first capping layer CL1 can protect the refractive layer RL and the color filter layer 500. The first capping layer CL1 can prevent or reduce damage or contamination of the refractive layer RL and / or the color filter layer 500 due to the penetration of impurities (such as moisture and air) from the outside. The first capping layer CL1 may include inorganic materials.

[0146] A dam 600 may be disposed on the first capping layer CL1. In an embodiment, the dam 600 may be disposed on the upper substrate 400. The dam 600 may be disposed on the lower surface of the upper substrate 400 facing the lower substrate 100. The dam 600 may include an organic material. In some cases, the dam 600 may include a light-shielding material to serve as a light-shielding layer. The light-shielding material may include at least one of, for example, black pigments, black dyes, black particles, and metal particles.

[0147] The embankment 600 may have multiple openings. For example, the embankment 600 may have an opening COP. The opening COP may be superimposed on a light-transmitting area CA. In an embodiment, multiple openings COP may be superimposed on light-transmitting areas CA. For example, a first opening COP1 may be superimposed on a first light-transmitting area CA1. A second opening COP2 may be superimposed on a second light-transmitting area CA2. A third opening COP3 may be superimposed on a third light-transmitting area CA3.

[0148] The functional layer 700 may be disposed within the open COP. The functional layer 700 may fill the open COP. In an embodiment, the functional layer 700 may include at least one of a color-converting material and a scatterer. In an embodiment, the color-converting material may be quantum dots. In an embodiment, the functional layer 700 may include a first quantum dot layer 710, a second quantum dot layer 720, and a transmission layer 730.

[0149] The first quantum dot layer 710 may be disposed in the first opening COP1. The first quantum dot layer 710 may be stacked with the first light-transmitting region CA1. The first quantum dot layer 710 may fill the first opening COP1. The first quantum dot layer 710 may be stacked with the first emitting region EA1. The first sub-pixel PX1 may include a first organic light-emitting diode OLED1 and the first quantum dot layer 710.

[0150] The first quantum dot layer 710 can convert light of a first wavelength band generated in the intermediate layer 220 on the first sub-pixel electrode 210R into light of a second wavelength band. For example, when light with a wavelength of about 450 nm to about 495 nm is generated in the intermediate layer 220 on the first sub-pixel electrode 210R, the first quantum dot layer 710 can convert this light into light with a wavelength of about 630 nm to about 780 nm. Therefore, light with a wavelength of about 630 nm to about 780 nm can be emitted from the first sub-pixel PX1 to the outside through the upper substrate 400. In an embodiment, the first quantum dot layer 710 may include a first quantum dot QD1, a first scatterer SC1, and a first matrix resin BR1. The first quantum dot QD1 and the first scatterer SC1 may be dispersed in the first matrix resin BR1.

[0151] The second quantum dot layer 720 can be disposed in the second opening COP2. The second quantum dot layer 720 can be stacked with the second light-transmitting region CA2. The second quantum dot layer 720 can fill the second opening COP2. The second quantum dot layer 720 can be stacked with the second emitting region EA2. The second sub-pixel PX2 may include a second organic light-emitting diode OLED2 and the second quantum dot layer 720.

[0152] The second quantum dot layer 720 can convert light of a first wavelength band generated in the intermediate layer 220 on the second sub-pixel electrode 210G into light of a third wavelength band. For example, when light with a wavelength of about 450 nm to about 495 nm is generated in the intermediate layer 220 on the second sub-pixel electrode 210G, the second quantum dot layer 720 can convert this light into light with a wavelength of about 495 nm to about 570 nm. Therefore, light with a wavelength of about 495 nm to about 570 nm can be emitted from the second sub-pixel PX2 to the outside through the upper substrate 400. In an embodiment, the second quantum dot layer 720 may include a second quantum dot QD2, a second scatterer SC2, and a second matrix resin BR2. The second quantum dot QD2 and the second scatterer SC2 may be dispersed in the second matrix resin BR2.

[0153] The transmissive layer 730 can be disposed in the third opening COP3. The transmissive layer 730 can be stacked with the third light-transmitting region CA3. The transmissive layer 730 can fill the third opening COP3. The transmissive layer 730 can be stacked with the third emitting region EA3. The third sub-pixel PX3 may include a third organic light-emitting diode OLED3 and the transmissive layer 730.

[0154] The transmission layer 730 can emit light generated in the intermediate layer 220 on the third sub-pixel electrode 210B to the outside without wavelength conversion. For example, when light with a wavelength of about 450 nm to about 495 nm is generated in the intermediate layer 220 on the third sub-pixel electrode 210B, the transmission layer 730 can emit the light to the outside without wavelength conversion. In an embodiment, the transmission layer 730 may include a third scatterer SC3 and a third matrix resin BR3. The third scatterer SC3 may be dispersed in the third matrix resin BR3. In an embodiment, the transmission layer 730 may not include quantum dots.

[0155] At least one of the first quantum dot QD1 and the second quantum dot QD2 may include a semiconductor material such as cadmium sulfide (CdS), cadmium telluride (CdTe), zinc sulfide (ZnS), and indium phosphide (InP). The quantum dots can have a size of several nanometers, and the wavelength of the converted light can vary depending on the size of the quantum dot.

[0156] In the embodiments, the core of the quantum dot may be selected from group II-VI compounds, group III-V compounds, group IV-VI compounds, group IV compounds, and any combination thereof.

[0157] Group II-VI compounds can be selected from the following groups: binary compounds, selected from the group consisting of CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, MgS and any mixture thereof; ternary compounds, selected from the group consisting of AgInS, CuInS, CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS. The group consisting of CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe, MgZnS and any mixture thereof; and quaternary compounds selected from the group consisting of HgZnTeS, CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe and any mixture thereof.

[0158] III-V group compounds may be selected from the group consisting of: binary compounds consisting of GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb and any mixture thereof; ternary compounds consisting of GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InNP, InNAs, InNSb, InPAs, InPSb and any mixture thereof; and quaternary compounds consisting of GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb and any mixture thereof.

[0159] Group IV-VI compounds can be selected from the following groups: binary compounds selected from SnS, SnSe, SnTe, PbS, PbSe, PbTe, and any mixture thereof; ternary compounds selected from SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe, and any mixture thereof; and quaternary compounds selected from SnPbSSe, SnPbSeTe, SnPbSTe, and any mixture thereof. Group IV elements can be selected from the group consisting of silicon (Si), germanium (Ge), and any mixture thereof. Group IV compounds can be binary compounds selected from the group consisting of SiC, SiGe, and any mixture thereof.

[0160] Binary, ternary, or quaternary compounds can exist in particles at a uniform concentration, or they can exist within the same particle but divided into states with partially different concentration distributions. Furthermore, quantum dots can have a core / shell structure in which one quantum dot surrounds another. The interface between the core and shell can have a concentration gradient in which the concentration of elements present in the shell decreases towards the center.

[0161] In some embodiments, the quantum dot may have a core / shell structure comprising a core and a shell surrounding the core. For example, the core may comprise the nanocrystals described above. The shell of the quantum dot may serve as a protective layer to maintain semiconductor properties by preventing chemical modification of the core, and / or as a charging layer to impart electrophoretic properties to the quantum dot. The shell may be one or multiple layers. The interface between the core and the shell may have a concentration gradient in which the concentration of elements present in the shell decreases toward the center. Examples of shells for quantum dots may include metal oxides or non-metal oxides, semiconductor compounds, or any combination thereof.

[0162] For example, metal oxides or non-metal oxides may include binary compounds such as SiO2, Al2O3, TiO2, ZnO, MnO, Mn2O3, Mn3O4, CuO, FeO, Fe2O3, Fe3O4, CoO, Co3O4, and NiO, or ternary compounds such as MgAl2O4, CoFe2O4, NiFe2O4, and CoMn2O4. However, this disclosure is not limited thereto.

[0163] Examples of semiconductor compounds may include CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnTeS, GaAs, GaP, GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP, and AlSb. However, this disclosure is not limited thereto.

[0164] Quantum dots can have a full width at half maximum (FWHM) of emission wavelengths of about 45 nm or smaller, about 40 nm or smaller, or about 30 nm or smaller, and can improve color purity or color reproducibility within this range. Furthermore, light emitted through such quantum dots is emitted in all directions, which can improve optical viewing angles.

[0165] The shape of quantum dots is not particularly limited to the shapes commonly used in this field. For example, shapes such as spheres, pyramids, multi-armed shapes, cubic nanoparticles, nanotubes, nanowires, nanofibers, and nanosheets can be used.

[0166] Quantum dots can adjust the color of emitted light according to their particle size; therefore, quantum dots can have a variety of emission colors such as blue, red, and green.

[0167] The first scatterer SC1, the second scatterer SC2, and the third scatterer SC3 can scatter light, thereby emitting more light. The first scatterer SC1, the second scatterer SC2, and the third scatterer SC3 can improve luminous efficiency. At least one of the first scatterer SC1, the second scatterer SC2, and the third scatterer SC3 can be any material among metals and metal oxides used for uniform light scattering. For example, at least one of the first scatterer SC1, the second scatterer SC2, and the third scatterer SC3 can be at least one of TiO2, ZrO2, Al2O3, In2O3, ZnO, SnO2, Sb2O3, and ITO. Furthermore, at least one of the first scatterer SC1, the second scatterer SC2, and the third scatterer SC3 can have a refractive index of 1.5 or greater. Therefore, the luminous efficiency of the functional layer 700 can be improved. In some embodiments, at least one of the first scatterer SC1, the second scatterer SC2, and the third scatterer SC3 can be omitted.

[0168] The first matrix resin BR1, the second matrix resin BR2, and the third matrix resin BR3 may include a light-transmitting material. For example, at least one of the first matrix resin BR1, the second matrix resin BR2, and the third matrix resin BR3 may include a polymer resin such as acrylic acid, BCB, and HMDSO.

[0169] A second capping layer CL2 may be disposed on the dike 600 and the functional layer 700. The second capping layer CL2 can protect the dike 600 and the functional layer 700. The second capping layer CL2 can prevent or reduce damage or contamination of the dike 600 and / or the functional layer 700 due to the infiltration of impurities (such as moisture and air) from the outside. The second capping layer CL2 may include inorganic materials.

[0170] In the display device 2 described above, the first sub-pixel PX1 can emit light of a second wavelength, the second sub-pixel PX2 can emit light of a third wavelength, and the third sub-pixel PX3 can emit light of a first wavelength. In other words, the display device 2 can display a full-color image.

[0171] A filler layer 30 may be disposed between the display panel 10 and the color conversion panel 20. In an embodiment, the filler layer 30 may be disposed between the encapsulation layer 300 and the dam 600. The filler layer 30 may have a cushioning effect to resist external pressure or external impact. The filler layer 30 may include a filler. In an embodiment, the filler layer 30 may include a thermosetting filler or a photocurable filler. The filler may include organic materials such as methyl silicone resin, phenyl silicone resin, and polyimide. However, one or more embodiments are not limited thereto, and the filler may include organic sealants, inorganic sealants, or silicone resins such as urethane resins, epoxy resins, and acrylic resins.

[0172] Reference Figure 9 Either the display panel 10 or the color conversion panel 20 may include columnar spacers 800. In one embodiment, the color conversion panel 20 may include columnar spacers 800. In another embodiment, the display panel 10 may include columnar spacers 800. Hereinafter, the case where the color conversion panel 20 includes columnar spacers 800 will be described in detail. The columnar spacers 800 may be disposed on the dam 600 to face the underlying substrate 100. The columnar spacers 800 may separate the encapsulation layer 300 and the dam 600 from each other. The columnar spacers 800 may pass through the filler layer 30. The columnar spacers 800 may include organic materials. In one embodiment, the columnar spacers 800 may include acrylic materials.

[0173] The columnar spacer 800 can separate the light-emitting elements and functional layers 700 from each other at uniform intervals. Therefore, the fill layer 30 can be disposed in the display area DA with a uniform thickness. In other words, the distance between the first organic light-emitting diode OLED1 and the first quantum dot layer 710 can be substantially equal to the distance between the second organic light-emitting diode OLED2 and the second quantum dot layer 720. Furthermore, the distance between the second organic light-emitting diode OLED2 and the second quantum dot layer 720 can be substantially equal to the distance between the third organic light-emitting diode OLED3 and the transmissive layer 730. When the columnar spacer 800 is omitted, unlike in this embodiment, the multiple light-emitting elements and functional layers 700 may not maintain uniform spacing. For example, the thickness of the fill layer 30 in the first light-transmitting region CA1 may be different from the thickness of the fill layer 30 in the second light-transmitting region CA2. In this case, the brightness of light emitted from the first organic light-emitting diode OLED1 and passing through the fill layer 30 superimposed on the first light-transmitting region CA1 may be different from the brightness of light emitted from the second organic light-emitting diode OLED2 and passing through the fill layer 30 superimposed on the second light-transmitting region CA2. In this embodiment, the columnar spacer 800 can be configured to pass through the filler layer 30 and can space the light-emitting element and the functional layer 700 at uniform intervals. Furthermore, the filler layer 30 can prevent or reduce variations in brightness in the display area DA depending on position.

[0174] Figure 10 This is a plan view showing a portion of the color conversion panel 20 according to an embodiment. Figure 10 yes Figure 6 Plan view of region B.

[0175] Reference Figure 8 and Figure 10 The color conversion panel 20 may include an upper substrate 400, a dam 600, and a functional layer 700. The upper substrate 400 may include a light-transmitting area CA and a peripheral area PA. The light-transmitting area CA may be an area where a color filter layer 500 is disposed. For example, the light-transmitting area CA may be an area where only one color filter is disposed. The peripheral area PA may be a light-blocking area. In an embodiment, the light-transmitting area CA may include a first light-transmitting area CA1, a second light-transmitting area CA2, and a third light-transmitting area CA3. The first light-transmitting area CA1, the second light-transmitting area CA2, and the third light-transmitting area CA3 may be spaced apart from each other. Figure 10 In this configuration, the centers of the first light-transmitting region CA1, the second light-transmitting region CA2, and the third light-transmitting region CA3 can be arranged to form the vertices of an imaginary triangle. In this case, only the first color filter 510 can be located in the first light-transmitting region CA1, only the second color filter 520 can be located in the second light-transmitting region CA2, and only the third color filter 530 can be located in the third light-transmitting region CA3.

[0176] The planar shape of at least one of the first light-transmitting area CA1, the second light-transmitting area CA2, and the third light-transmitting area CA3 described above can be rectangular or square. In the following description, for ease of explanation, the case where the planar shapes of the first light-transmitting area CA1, the second light-transmitting area CA2, and the third light-transmitting area CA3 are all squares will be primarily described.

[0177] In one embodiment, at least one corner of the planar shape of the first light-transmitting area CA1, the second light-transmitting area CA2, and the third light-transmitting area CA3 may be rounded or chamfered. In another embodiment, at least one corner of the planar shape of the first light-transmitting area CA1, the second light-transmitting area CA2, and the third light-transmitting area CA3 may not be chamfered. Hereinafter, for ease of description, the case where the corners of the planar shapes of the first light-transmitting area CA1, the second light-transmitting area CA2, and the third light-transmitting area CA3 are all chamfered will be primarily described.

[0178] The first light-transmitting area CA1 and the second light-transmitting area CA2 described above can be set in the same column or the same row. In other words, the first light-transmitting area CA1 and the second light-transmitting area CA2 can be in one direction (e.g., Figure 10 The light-transmitting areas CA1 and CA2 can each be arranged in a row along one of the x-axis and y-axis directions. In this case, multiple first light-transmitting areas CA1 and multiple second light-transmitting areas CA2 can each be set, and some of the multiple first light-transmitting areas CA1 and some of the multiple second light-transmitting areas CA2 can be alternately arranged in one direction. In addition, some of the multiple first light-transmitting areas CA1 and some of the multiple second light-transmitting areas CA2 can be arranged in another direction (e.g., Figure 10 The third light-transmitting region CA3 can be arranged in a row along the other of the x-axis and y-axis directions. The third light-transmitting region CA3 can be spaced apart from the first light-transmitting region CA1 and the second light-transmitting region CA2 in the other direction. The third light-transmitting region CA3 can be located in a different row than the row on which the first light-transmitting region CA1 and the second light-transmitting region CA2 are arranged. In other words, in a plan view, the center of the first light-transmitting region CA1, the center of the second light-transmitting region CA2, and the center of the third light-transmitting region CA3 can form a triangle. In this case, multiple third light-transmitting regions CA3 can be arranged in rows along the first and second directions, and the first and second directions can be perpendicular to each other.

[0179] The peripheral region PA can be disposed outside the light-transmitting region CA. The peripheral region PA can surround at least a portion of the light-transmitting region CA. In an embodiment, the peripheral region PA can completely surround the light-transmitting region CA. The peripheral region PA can completely surround the first light-transmitting region CA1. The peripheral region PA can completely surround the second light-transmitting region CA2. The peripheral region PA can completely surround the third light-transmitting region CA3.

[0180] The dam 600 may have an open COP and a peripheral open POP. In an embodiment, the area of ​​the open COP may be larger than the area of ​​the peripheral open POP. The open COP may be stacked with a light-transmitting region CA. The open COP may be filled with a functional layer 700. The open COP may include a first open COP1, a second open COP2, and a third open COP3. The first open COP1 may be disposed in a first light-transmitting region CA1. The second open COP2 may be disposed in a second light-transmitting region CA2. The third open COP3 may be disposed in a third light-transmitting region CA3. In this case, the array of open COPs may be the same as or similar to the array of light-transmitting regions CA described above.

[0181] At least one of the first opening COP1, the second opening COP2, and the third opening COP3 may have a square shape in planar shape. In the following description, for ease of description, the case in which the planar shapes of the first opening COP1, the second opening COP2, and the third opening COP3 are all square shapes will be described.

[0182] In the case described above, in the plan view, the edge (or inner surface) of the opening COP may not coincide with the edge of the light-transmitting area CA, and may be spaced apart from the edge of the light-transmitting area CA.

[0183] A peripheral opening (POP) can be disposed within a peripheral region (PA). A plurality of peripheral opening POPs can be included. The shapes of the plurality of peripheral opening POPs can include various shapes such as polygonal shapes and circular shapes. In an embodiment, in a plan view, the plurality of peripheral opening POPs can surround an opening (COP). For example, in a plan view, the plurality of peripheral opening POPs can surround a first opening (COP1). In a plan view, the plurality of peripheral opening POPs can surround a second opening (COP2). In a plan view, the plurality of peripheral opening POPs can surround a third opening (COP3).

[0184] The peripheral opening (POP) can be a structure used to improve the reliability of the color conversion panel 20. For example, the functional layer 700 can be formed by an inkjet printing process. When the functional layer 700 is formed by dispensing ink through the opening COP, the nozzles must supply ink to the opening COP at precise locations. When the nozzles fail to supply ink to the opening COP at precise locations, the functional layer 700 may form on the upper surface of the dike 600. In this case, when the color conversion panel 20 and the display panel 10 are bonded together, the functional layer 700 formed on the upper surface of the dike 600 can cause damage such as cracks to the encapsulation layer 300. Optionally, due to the functional layer 700 formed on the upper surface of the dike 600, the filler layer 30 may be unevenly disposed between the display panel 10 and the color conversion panel 20.

[0185] A functional layer 700 may be disposed within an open COP. The functional layer 700 may fill the open COP. In an embodiment, the functional layer 700 may include at least one of a color-converting material and a scatterer. In an embodiment, the color-converting material may be quantum dots. In an embodiment, the functional layer 700 may include a first quantum dot layer 710, a second quantum dot layer 720, and a transmission layer 730. The first quantum dot layer 710 may be disposed within a first open COP1. The second quantum dot layer 720 may be disposed within a second open COP2. The transmission layer 730 may be disposed within a third open COP3.

[0186] When the functional layer 700 described above is configured, the apparatus and method for manufacturing a display device described above can be used. In this case, the aperture COP can be located at a position corresponding to each sub-pixel. One aperture COP can correspond to one discharge area. In other words, multiple nozzles can be configured to be stacked on top of each other on the upper surface of an aperture COP, and the nozzles supplying ink to an aperture COP can be selected as described above and can supply ink.

[0187] Through the above, the material forming the functional layer 700 can be precisely supplied to each opening COP.

[0188] Figure 11 This is a perspective view showing a display device 2 according to another embodiment. Figure 12 It is shown Figure 11 An exploded perspective view of the display device 2 shown.

[0189] Reference Figure 11 and Figure 12 The display device 2 may include a cover window 70, a display panel 10, a data driver 22, a display circuit board 23, a bracket 60, a main circuit board 50, a battery 80, and / or a lower cover 90.

[0190] In the plan view, "left", "right", "up" and "down" indicate the directions when viewing the display panel 10 from a direction perpendicular to the display panel 10. For example, "left" represents the -x direction, "right" represents the +x direction, "up" represents the +y direction, and "down" represents the -y direction.

[0191] In a plan view, display device 2 may appear to have a roughly rectangular shape. For example, as Figure 11 As shown, the display device 2 may appear to have a generally rectangular shape on the xy plane (the plane defined by the x-axis and y-axis directions), with a shorter side in the x-axis direction and a longer side in the y-axis direction. In this case, the corner where the shorter side in the x-axis direction and the longer side in the y-axis direction meet may form a right angle, or it may have a circular shape with a certain curvature. However, in the plan view, the display device 2 may have a polygonal shape other than a rectangular shape, or it may have an elliptical shape or an irregular shape.

[0192] A cover window 70 can be disposed above the display panel 10 to cover the upper surface of the display panel 10. The cover window 70 can protect the upper surface of the display panel 10.

[0193] The cover window 70 may include a transmissive cover unit DA70 corresponding to the display panel 10 and a light-shielding cover unit NDA70 surrounding the transmissive cover unit DA70. The light-shielding cover unit NDA70 may include an opaque material (e.g., a colored opaque material) that blocks light. The light-shielding cover unit NDA70 may include a pattern that can be shown to the user when no image is displayed.

[0194] The display panel 10 may be disposed below the cover window 70. The display panel 10 may be stacked with the transmissive cover unit DA 70 of the cover window 70. The display panel 10 may include a display area DA. The display area DA is the area on which an image is displayed, and the display area DA may include an area (hereinafter referred to as the "component area") that transmits light emitted from the component 40 disposed below the display panel 10. The component 40 may include a sensor and camera that use visible light, infrared light, or sound.

[0195] Display panel 10 can be a light-emitting display panel including light-emitting diodes (LEDs). The LEDs can be organic light-emitting diodes (OLEDs) including an organic emitting layer, or inorganic light-emitting diodes including inorganic materials. Inorganic LEDs can include PN junction diodes containing inorganic semiconductor base materials. When a voltage is applied to the PN junction diode in the forward direction, holes and electrons can be injected, and the energy generated by the recombination of holes and electrons can be converted into light energy, allowing the emission of light of a certain color. The inorganic LEDs described above can have widths ranging from a few micrometers to hundreds of micrometers. Inorganic LEDs can also be referred to as micro LEDs.

[0196] The display panel 10 can be a rigid display panel that is not easily bendable due to its rigidity, or a flexible display panel that is easily bendable, foldable, or rollable due to its flexibility. For example, the display panel 10 can be a foldable display panel, a curved display panel with a bendable display surface, a curved display panel in which the area other than the display surface is bendable, a rollable display panel, or a stretchable display panel.

[0197] The display panel 10 may be a transparent display panel in which an object or background disposed on the lower surface of the display panel 10 is visible through the upper surface of the display panel 10. Alternatively, the display panel 10 may be a reflective display panel in which the object or background can be reflected from the upper surface of the display panel 10.

[0198] The display panel 10 described above may have Figure 8 and Figure 9 The structure shown is from the lower substrate 100 to the encapsulation layer 300.

[0199] The data driver 22 may be mounted on the display panel 10 in the form of an integrated circuit (IC). However, one or more embodiments are not limited to this; for example, the data driver 22 may be mounted on the display circuit board 23.

[0200] The display circuit board 23 can be attached to one side of the display panel 10. The display circuit board 23 can be a flexible printed circuit board (FPCB), a rigid printed circuit board (PCB) that is rigid and not easily bent, or a composite printed circuit board including both PCB and FPCB. A touch sensor driving unit can be mounted on the display circuit board 23 described above. The touch sensor driving unit can be formed as an IC. The touch sensor driving unit can be electrically connected to the touch electrodes of the touch screen layer of the display panel 10 via the display circuit board 23.

[0201] The touchscreen layer of the display panel 10 can detect user touch input using at least one of various touch methods, such as resistive film method and electrostatic capacitance method. When the touchscreen layer of the display panel 10 detects user touch input using electrostatic capacitance method, the touch sensor driving unit can apply a driving signal to the driving electrode among the touch electrodes and detect the voltage charging in the mutual capacitance between the driving electrode and the sensing electrode through the sensing electrode among the touch electrodes, so as to determine whether the user has touched.

[0202] User touches can include contact touches and proximity touches. A contact touch refers to an object (such as a user's finger or pen) directly touching a cover window 70 disposed on the touchscreen layer. A proximity touch refers to an object (such as a user's finger or pen) being positioned (e.g., hovering) near the cover window 70. The touch sensor driving unit can transmit sensor data to the main processor 910 based on the detected voltage, and the main processor 910 can analyze the sensor data to calculate the touch coordinates of the touch input that has occurred on it.

[0203] A control unit for supplying drive voltages for driving the pixel, gate driver, and / or data driver 22 of the display panel 10 may be disposed on the display circuit board 23.

[0204] A bracket 60 for supporting the display panel 10 may be disposed below the display panel 10. The bracket 60 may include plastic, metal, or both. The bracket 60 may include a first camera hole CMH1 into which a camera device 931 is inserted, a battery hole BH in which a battery 80 is disposed, a cable hole CAH through which a cable connected to the display circuit board 23 passes, and a component hole CPH corresponding to component 40. When viewed from a third-party direction (z-axis direction), the component hole CPH may overlap with component 40 of the main circuit board 50. Furthermore, when viewed from a third-party direction (z-axis direction), the display area DA of the display panel 10 may overlap with component 40 of the main circuit board 50. However, if desired, the bracket 60 may not have the component hole CPH.

[0205] The component 40 included in the display device 2 may include a first component 41, a second component 42, a third component 43, and a fourth component 44 stacked with the display panel 10. Each of the first component 41, the second component 42, the third component 43, and the fourth component 44 may include at least one of a proximity sensor, an illuminance sensor, an iris sensor, a facial recognition sensor, and a camera (or image sensor). The proximity sensor, using infrared light, can detect an object positioned near the upper surface of the display device 2, and the illuminance sensor can detect the brightness of light incident on the upper surface of the display device 2. Furthermore, the iris sensor can capture an image of the iris of a person positioned on the upper surface of the display device 2, and the camera can acquire image data of an object positioned on the upper surface of the display device 2. However, the component 40 is not limited to a proximity sensor, an illuminance sensor, an iris sensor, a facial recognition sensor, and / or a camera, and may include other sensors.

[0206] The main circuit board 50 and the battery 80 can be located below the bracket 60. The main circuit board 50 can be a PCB or an FPCB.

[0207] The main circuit board 50 may include a main processor 910, a camera device 931, a main connector 55, and component 40. The main processor 910 may be formed as an IC. If desired, the display device 2 may include a camera device disposed below the main circuit board 50 and a camera device 931 disposed on the upper surface of the main circuit board 50. Each of the main processor 910 and the main connector 55 may be disposed on either the upper or lower surface of the main circuit board 50. The main circuit board 50 described above can be electrically connected to the display circuit board 23 via the main connector 55.

[0208] The main processor 910 can control all functions of the display device 2. For example, the main processor 910 can output digital video data to the data driver 22 via the display circuit board 23, thereby displaying an image on the display panel 10. The main processor 910 can receive sensing data from the touch sensor driver unit. The main processor 910 can determine whether the user has touched the screen based on the sensing data and perform an operation corresponding to the user's direct touch or proximity touch. The main processor 910 can be an application processor, a central processing unit, or a system-on-a-chip (SoC) including an IC.

[0209] Camera device 931 can process image frames (such as still images and moving images) acquired by an image sensor in camera mode and output the processed image frames to main processor 910. Camera device 931 may include at least one of a camera sensor (e.g., a charge-coupled device (CCD) or complementary metal-oxide-semiconductor (CMOS)), a light sensor (or image sensor), and a laser sensor.

[0210] The cable that has passed through the cable hole CAH of the bracket 60 can be connected to the main connector 55, and the main connector 55 can be electrically connected to the display board 23 via the cable.

[0211] Figure 13 It is shown Figure 6 or Figure 11 Block diagram of display device 2 shown.

[0212] Reference Figure 13 The display device 2 can also be made of, for example Figure 13 The block diagram shown is illustrated. (As...) Figure 13 As shown, in addition to the main processor 910, the display device 2 may also include a wireless communication unit 920, an input unit 930, a sensor unit 940, an output unit 950, an interface unit 960, a memory 970, and / or a power supply unit 980.

[0213] The wireless communication unit 920 may include at least one of a broadcast receiving module 921, a mobile communication module 922, a wireless internet module 923, a short-range communication module 924, and a location information module 925.

[0214] The broadcast receiving module 921 can receive broadcast signals and / or broadcast-related information from an external broadcast management server via a broadcast channel. The broadcast channel may include a satellite channel or a terrestrial channel.

[0215] The mobile communication module 922 can transmit and receive radio signals from at least one of a base station, an external terminal, and a server on a mobile communication network established according to technical standards or communication schemes for mobile communication (e.g., Global System for Mobile Communications (GSM), Code Division Multiple Access (CDMA), Code Division Multiple Access 2000 (CDMA2000), Enhanced Voice Data Optimized or Enhanced Voice Data Only (EV-DO), Wideband CDMA (WCDMA), High-Speed ​​Downlink Packet Access (HSDPA), High-Speed ​​Uplink Packet Access (HSUPA), Long Term Evolution (LTE), and Advanced Long Term Evolution (LTE-A)). The radio signals may include various forms of data, such as voice call signals, video call signals, or text / multimedia messages, for transmission and reception.

[0216] Wireless Internet module 923 refers to a module used for accessing the wireless Internet. Wireless Internet module 923 can be configured to transmit and receive wireless signals on a communication network according to wireless Internet technologies. For example, wireless Internet technologies can be Wireless LAN (WLAN), Wi-Fi, Wi-Fi Direct, and / or Digital Living Network Alliance (DLNA).

[0217] The short-range communication module 924 is used for short-range communication and can be used via Bluetooth. ® The short-range communication module 924 supports at least one of the following: Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, Near Field Communication (NFC), Wi-Fi, Wi-Fi Direct, and Wireless Universal Serial Bus (Wireless USB). The short-range communication module 924 can support wireless communication between the display device 2 and a wireless communication system, between the display device 2 and another electronic device, or between the display device 2 and a network that locates another electronic device (or an external server) via a short-range wireless communication network (wireless local area network). The short-range wireless communication network can be a short-range wireless personal communication network (wireless personal area network). The other electronic device can be a wearable device capable of exchanging (or linking) data with the display device 2.

[0218] The location information module 925 is a module for obtaining the location of the display device 2, and may include a Global Positioning System (GPS) module or a Wi-Fi module.

[0219] The input unit 930 may include an image input unit (such as a camera device 931) for receiving image information, an audio input unit (such as a microphone 932) for receiving audio signals, and an input device 933 for receiving information from a user. The camera device 931 can process image frames (such as still images and moving images) acquired by the image sensor in video call mode or shooting mode. The processed image frames can be displayed on the display panel 10 or stored in the memory 970. The microphone 932 can process external audio signals into electronic voice data. Depending on the function performed (or the application running) in the display device 2, the processed voice data can be used differently.

[0220] The main processor 910 can control the operation of the display device 2 in response to information received via the input device 933. The input device 933 may include mechanical or touch input methods positioned on the rear or side surface of the display device 2, such as buttons, dome switches, microwheels, and microswitches. Touch input methods may include the touchscreen layer of the display panel 10.

[0221] Sensor unit 940 may include one or more sensors that sense at least one of information within display device 2, information about the surrounding environment of display device 2, and user information, and generate corresponding sensing signals. Based on the sensing signals described above, main processor 910 may control the driving or operation of display device 2, or perform data processing, functions, or operations related to applications installed on display device 2. Sensor unit 940 may be a proximity sensor, illuminance sensor, or facial recognition sensor as described above with reference to component 40. However, sensor unit 940 may include an accelerometer, magnetic sensor, G-sensor, gyroscope sensor, motion sensor, RGB sensor, infrared (IR) sensor, finger scanning sensor, ultrasonic sensor, optical sensor, and / or battery level sensor. Furthermore, sensor unit 940 may include environmental sensors or chemical sensors. For example, environmental sensors may be barometers, hygrometers, thermometers, radiation detection sensors, thermal detection sensors, and / or gas detection sensors. Chemical sensors may be, for example, electronic noses, healthcare sensors, and / or biometric sensors.

[0222] The output unit 950 is designed to produce outputs related to visual, auditory, or tactile sensations and may include at least one of the display panel 10, audio output unit 951, tactile module 952, and optical output unit 953.

[0223] Display panel 10 can display (output) information processed in display device 2. For example, display panel 10 can display execution screen information of an application running in display device 2, display user interface (UI) information based on the execution screen information, or display graphical user interface (GUI) information. Display panel 10 may include a display layer for displaying images and a touch screen layer for detecting user touch input. As described above, display panel 10 can be used as one of the input devices 933 that provide an input interface between display device 2 and user, and can also be used as one of the output units 950 that provide an output interface between display panel 10 and user.

[0224] The audio output unit 951 can output audio data received from the wireless communication unit 920 or stored in the memory 970 in call signal receiving mode, call mode, recording mode, voice recognition mode, and / or broadcast receiving mode. The audio output unit 951 can output audio signals related to functions performed in the display device 2 (e.g., call signal receiving sound and message receiving sound). The audio output unit 951 may include a receiver and a speaker. At least one of the receiver and speaker may be an audio generating device attached to the lower part of the display panel 10 to vibrate the display panel 10 and output sound. The audio generating device may be a piezoelectric element or piezoelectric actuator that contracts and expands in response to an electrical signal, or it may be an exciter that generates magnetic force by using a voice coil to vibrate the display panel 10.

[0225] The haptic module 952 can produce various tactile effects that can be felt by the user. The haptic module 952 can provide vibration as a tactile effect to the user. The haptic module 952 can not only transmit tactile effects through direct contact, but can also be implemented so that the user can feel the tactile effects through the muscle sensation of the fingers or arms.

[0226] The optical output unit 953 can output a signal to notify of an event by using light from a light source. Examples of events occurring in the display device 2 may include receiving a message, receiving a call signal, receiving a missed call, an alarm, a schedule reminder, receiving an email, and / or receiving information via an application. The signal output from the optical output unit 953 can be implemented as the display device 2 emitting light of one or more colors forward or backward. The signal output can be terminated when the display device 2 detects user confirmation of the event.

[0227] Interface unit 960 can be used as a channel for various types of external devices connected to display device 2. Interface unit 960 may include at least one of a wired / wireless headphone port, an external charging port, a wired / wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input / output (I / O) port, a video I / O port, and a headphone port. When an external device is connected to interface unit 960, display device 2 can perform appropriate control related to the connected external device.

[0228] The memory 970 can store data supporting various functions of the display device 2. The memory 970 can store multiple applications running on the display device 2 and data and / or instructions for operating the display device 2. At least some of the applications can be downloaded from an external server via wireless communication. The memory 970 can store applications for the operation of the main processor 910, or can temporarily store input / output data such as phone books, messages, still images, and moving images. Furthermore, the memory 970 can store tactile data of various modes of vibration provided to the tactile module 952, and audio data about various sounds provided to the audio output unit 951.

[0229] The memory 970 may include at least one type of storage medium selected from flash memory, hard disk, solid-state drive (SSD), silicon disk drive (SDD), multimedia card micro, card-type memory (e.g., secure digital (SD) or extreme digital (XD) memory), random access memory (RAM), static RAM (SRAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), programmable ROM (PROM), magnetic storage, magnetic disk, and optical disk.

[0230] Under the control of the main processor 910, the power supply unit 980 can receive external power and / or internal power and supply power to each of the components included in the display device 2. The power supply unit 980 may include a battery 80. Furthermore, the power supply unit 980 may have a connection port, and the connection port may be an example of an interface unit 960 to which an external charger is electrically connected, wherein the external charger supplies power to charge the battery. Optionally, the power supply unit 980 may also wirelessly charge the battery 80. The battery 80 may be configured not to overlap with the main circuit board 50 in the third direction (z-axis direction). The battery 80 may overlap with a battery hole BH defined in the bracket 60.

[0231] The lower cover 90 can form the appearance of the display device 2 and may have an opening that exposes a portion of the display panel 10. The lower cover 90 may have a shape in which the surface corresponding to the display panel 10 is open, and may be fastened to the display panel 10. The lower cover 90 may be positioned on the opposite side of the cover window 70 with the display panel 10 between them. The lower cover 90 may be disposed below the main circuit board 50 and the battery 80. The lower cover 90 may be fastened and fixed to the bracket 60. The lower cover 90 can form the appearance of the lower surface of the display device 2. The lower cover 90 may include plastic, metal, or both plastic and metal.

[0232] The second camera hole CMH2, which passes through the lower surface of the camera assembly 931, can be confined within the lower cover 90. For example... Figure 12 As shown, the position of the camera device 931 and the positions of the first camera hole CMH1 and the second camera hole CMH2 corresponding to the camera device 931 can be superimposed on each other.

[0233] According to one or more embodiments, the quality of the display device can be improved, and the manufacturing speed of the display device can be increased.

[0234] The effects disclosed are not limited to those mentioned above, and those skilled in the art will clearly understand other unmentioned effects through the description of the claims.

[0235] It should be understood that the embodiments described herein are to be considered in a descriptive sense only and not for limiting purposes. The description of features or aspects in each embodiment should generally be considered applicable to other similar features or aspects in other embodiments. Although one or more embodiments have been described with reference to the accompanying drawings, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope as defined by the claims.

Claims

1. An apparatus for manufacturing a display device, the apparatus comprising: an ink discharging unit configured to move in a first direction and including a head unit including a plurality of nozzles spaced apart from each other and configured to discharge ink toward a substrate; an inspection unit including a film member including a same material as the substrate; a camera unit configured to obtain first image information about the ink discharged on the film member; a moving unit configured to move the ink discharging unit and the camera unit in the first direction; and a control unit configured to select at least two nozzles from among the plurality of nozzles to discharge the ink on the substrate based on the first image information. 2.The apparatus of claim 1, further comprising: a stage spaced apart from the head unit in a vertical direction and configured to move in a second direction crossing the first direction, wherein the substrate is disposed on the stage and the vertical direction is perpendicular to a plane defined by the first direction and the second direction, wherein the control unit is further configured to control the ink discharging unit based on second image information to individually adjust a discharge timing of the ink discharged by each of the at least two nozzles, and wherein the camera unit is further configured to photograph the ink discharged on the substrate to obtain the second image information. 3.The apparatus of claim 2, wherein the control unit is further configured to adjust the discharge timing of the ink discharging unit such that one of the at least two nozzles discharges the ink at a first discharge timing and another of the at least two nozzles discharges the ink at a second discharge timing different from the first discharge timing. 4.The apparatus of claim 2, wherein the control unit is further configured to obtain information about a total amount of the ink discharged on the substrate and a position on the substrate where the ink is discharged based on the second image information. 5.The apparatus of claim 4, wherein the control unit is further configured to determine a moving speed of the ink discharging unit in the first direction and a position of the ink discharging unit based on the total amount of the ink discharged on the substrate and the position on the substrate where the ink is discharged. 6.The apparatus of claim 2, wherein the control unit is further configured to control movement of the stage such that the discharge timing of each of the at least two nozzles is adjusted by a moving distance of the stage. 7.The apparatus of claim 1, wherein the control unit is further configured to generate first print information including a discharge position where the ink is to be discharged within the substrate based on the first image information. 8.The apparatus of claim 7, further comprising: a stage spaced apart from the head unit and configured to move in a second direction, wherein the substrate is disposed on the stage, wherein the camera unit obtains second image information by photographing the ink discharged on the substrate, and wherein the control unit is further configured to control the ink discharging unit based on the second image information to individually adjust a discharge timing of the ink discharged by each of the at least two nozzles. The control unit is further configured to calculate a jetting error of each of the plurality of nozzles based on the first printing information and the second image information.

9. The apparatus according to claim 1, wherein Each of a surface of the film member and a surface of the substrate is water repellent.

10. The apparatus according to claim 1, wherein The inspection unit includes: an inspection stage configured to support the film member; and an inspection stage drive unit on which the inspection stage is mounted, and the inspection stage drive unit is configured to linearly move the inspection stage.

11. A method of manufacturing a display device, the method comprising the steps of: providing a film member on an inspection unit; discharging ink on the film member through a plurality of nozzles of an ink discharging unit; obtaining first image information by capturing the ink discharged on the film member, wherein the first image information includes positions of the ink discharged on the film member and shapes thereof; and selecting at least two nozzles from among the plurality of nozzles to discharge the ink on a substrate based on the first image information.

12. The method according to claim 11, further comprising the steps of: determining first printing information including positions on the substrate at which the ink is to be discharged based on the at least two nozzles.

13. The method according to claim 12, further comprising the steps of: discharging the ink on the substrate provided on a stage by the ink discharging unit based on the first printing information; obtaining second image information by capturing the ink discharged on the substrate by a camera unit; calculating a jetting error of the ink discharging unit based on the first printing information and the second image information, wherein the first printing information includes first coordinates of the positions on the substrate at which the ink is to be discharged, wherein the second image information includes second coordinates of positions of the ink in the second image information, and wherein the jetting error corresponds to a difference between the second coordinates and the first coordinates; and generating second printing information based on the jetting error, wherein the second printing information includes at least one of a position of the stage on which the substrate is placed, a position of the ink discharging unit, and a discharge timing at which each of the plurality of nozzles discharges ink, which is different from corresponding information in a previous second printing information.

14. The method according to claim 13, further comprising the steps of: adjusting operation of the ink discharging unit differently depending on whether the jetting error is positive or negative, wherein the jetting error is positive when the second coordinates are greater than the first coordinates, and the jetting error is negative when the second coordinates are less than the first coordinates.

15. The method according to claim 14, wherein operation of each of the plurality of nozzles of the ink discharging unit is individually adjusted based on the jetting error.

16. The method according to claim 13, further comprising the steps of: changing a timing at which the ink is discharged from at least one nozzle among the plurality of nozzles based on the jetting error.

17. The method according to claim 12, further comprising the steps of: determining whether each of the plurality of nozzles is operating normally based on the first image information.

18. The method according to claim 11, wherein, surfaces of the film member and the substrate are water repellent.

19. The method according to claim 13, further comprising the steps of: setting a moving distance of a head unit of the ink discharging unit based on the jet error.

20. The method according to claim 11, further comprising the steps of: linearly moving the film member.

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