Apparatus for manufacturing display device and method for manufacturing display device

Abstract

Disclosed are an apparatus for manufacturing a display device and a method for manufacturing a display device. The present invention automatically performs inspection according to defects in a workpiece during a manufacturing process and learns from workpieces in which no defect have occurred, thereby making it possible to accurately determine whether a defect exists in a workpiece.

Description

Manufacturing device for display device and manufacturing method for display device

[0001] Embodiments of the present invention relate to a manufacturing device for a display device and a manufacturing method for a display device.

[0002] Electronic devices based on mobility are becoming increasingly popular. In addition to small electronic devices like mobile phones, tablet PCs have recently become widely used.

[0003] These mobile electronic devices include display devices to support various functions and provide users with visual information, such as images or videos. Recently, as the components required to drive these display devices have become smaller, the proportion of display devices in electronic devices has been steadily increasing. Structures capable of bending from a nearly flat state to a specified angle are also being developed. Minimizing defects in the manufacturing of these display devices, thereby improving productivity and reducing manufacturing times, is a critical issue.

[0004] Typically, various inspection methods can be used during the manufacturing process to prevent display device defects. Typically, inspections during display device manufacturing involve human inspection, either through visual inspection or through photographed images. This is time-consuming and may require the manufacturing equipment to be shut down for extended periods. In such cases, testing must be performed in various environments when the equipment is restarted, potentially reducing manufacturing efficiency.

[0005] Embodiments of the present invention provide a manufacturing device for a display device and a manufacturing method for a display device that not only increases manufacturing efficiency but also reduces the time required to address defects.

[0006] Additional aspects will be described in part in the detailed description of the invention which follows, or will be apparent from the detailed description of the invention, or may be learned from the examples which follow.

[0007] One embodiment of the present invention discloses a manufacturing apparatus for a display device, including a shuttle unit having lift pins for raising and lowering a substrate, an image capturing unit for photographing the substrate being raised and lowered by the shuttle unit, a generation unit equipped with a learning model for generating at least one first still image, which is an image when the substrate is a good product, and at least one second still image, which is an image when the substrate is a defective product, based on an image captured when the substrate is a good product among the images of the substrate captured by the image capturing unit, and a judgment unit for comparing the first still image and the second still image with a preset comparison still image of the substrate to determine whether the first still image and the second still image are images of a good product or images of a defective product.

[0008] The manufacturing apparatus and manufacturing method of the display device according to embodiments of the present invention can automatically perform inspection for defects in the product during the manufacturing process.

[0009] The manufacturing apparatus and manufacturing method of the display device according to embodiments of the present invention can precisely determine whether a process product is defective by learning a process product in which no defects have occurred.

[0010] The manufacturing apparatus and manufacturing method of the display device according to embodiments of the present invention can store a defective product in a separate storage space and then proceed with the process of another product, thereby not stopping the operation of the manufacturing apparatus of the display device in order to remove the defective product.

[0011] The manufacturing apparatus and manufacturing method of the display device according to embodiments of the present invention can divide the product into multiple areas and determine whether there is a defect in each area.

[0012] Figure 1 is a plan view schematically showing a manufacturing device for a display device according to one embodiment of the present invention.

[0013] Fig. 2a is a cross-sectional view showing an inspection section of a manufacturing device of the display device illustrated in Fig. 1.

[0014] Fig. 2b is a perspective view showing the shuttle portion illustrated in Fig. 2a.

[0015] Fig. 3 is a block diagram schematically showing the control flow of the manufacturing device of the display device illustrated in Fig. 1.

[0016] Figure 4 is a drawing schematically showing a second still image generated in the generation unit illustrated in Figure 3.

[0017] Fig. 5 is a flowchart showing the control sequence of the manufacturing device of the display device illustrated in Fig. 2.

[0018] FIG. 6 is a plan view schematically showing a display device according to embodiments of the present invention.

[0019] Fig. 7 is a cross-sectional view schematically showing a display device taken along the line Ⅶ-Ⅶ´ of Fig. 6.

[0020] FIG. 8 is a circuit diagram schematically showing an equivalent circuit of a pixel of a display device according to one embodiment of the present invention.

[0021] One embodiment of the present invention discloses a manufacturing apparatus for a display device, including a shuttle unit having lift pins for raising and lowering a substrate, an image capturing unit for capturing a plurality of images of the substrate, a generation unit equipped with a learning model for generating at least one first still image, which is an image when the substrate is a good product, and at least one second still image, which is an image when the substrate is a defective product, based on an image captured when the substrate is a good product among the images of the substrate captured by the image capturing unit, and a judgment unit for comparing the first still image and the second still image with a preset comparison still image of the substrate to determine whether the first still image and the second still image are images of a good product or images of a defective product.

[0022] In the present embodiment, the judgment unit may calculate a first outlier score by comparing outlier scores between the comparison still image and the first still image, calculate a second outlier score by comparing outlier scores between the comparison still image and the second still image, determine whether the first outlier score exceeds a preset value to determine whether the first still image is an image of a defective product, and determine whether the second still image is an image of a defective product by determining whether the second outlier score exceeds a preset value.

[0023] In the present embodiment, if the ratio of images judged as good products by the judgment unit among the first still image and the second still image is less than a certain ratio, the generation unit can add a new captured image captured by the imaging unit to the learning model and regenerate the first still image and the second still image based on the learning model.

[0024] In this embodiment, the judgment unit can select the learning model as the final model if the learning model satisfies certain conditions.

[0025] In this embodiment, the final model is mounted, and a determination unit may further be included to determine whether the substrate is a good product based on an image captured by the imaging unit and a final image of a good product generated from the final model.

[0026] In this embodiment, the shuttle unit may further include an inspection chamber in which the shuttle unit is housed inside and the imaging unit is placed outside, and a substrate storage unit connected to the inspection chamber, in which the substrate is judged to be defective by the judgment unit, and which stores the substrate judged to be defective.

[0027] In this embodiment, the first still image and the second still image can be generated at a constant time price.

[0028] In this embodiment, the first still image and the second still image can be generated according to the elevation height of the substrate.

[0029] In this embodiment, the substrate is divided into a plurality of regions, and the first still image and the second still image can be generated for each region of the substrate.

[0030] In the present embodiment, the judgment unit can compare the brightness of at least one of the first still image and the second still image with the brightness of the comparison still image.

[0031] In the present embodiment, the imaging unit may include a transmission window arranged on the outer surface of the inspection chamber, a vision unit arranged to correspond to the transmission window, and a cover arranged to surround the vision unit and connected to the inspection chamber.

[0032] Another embodiment of the present invention discloses a method for manufacturing a display device, comprising: a step of capturing a plurality of images of a substrate; a step of generating a first still image of the substrate as a good product and a second still image of the substrate as a defective product using a learning model based on an image captured when the substrate is a good product among the captured images of the substrate; a step of comparing the first still image and the second still image with a comparison still image to determine whether the first still image and the second still image are images of a good product or images of a defective product, respectively; and a step of inputting a new captured image of the substrate into the learning model when the ratio of the first still image and the second still image as images of a good product is less than a predetermined ratio.

[0033] In the present embodiment, a step of comparing the brightness of at least one of the first still image and the second still image with the brightness of the comparison still image may be further included.

[0034] In this embodiment, if the ratio of the first still image and the second still image being images of good products is greater than a certain ratio, the learning model can be selected as the final model.

[0035] In this embodiment, a step of comparing an image of a good product generated from the final model with an image of the substrate taken to determine whether the substrate is defective may be further included.

[0036] In this embodiment, if the substrate is determined to be defective, a step of storing the substrate in a space separate from the space in which the substrate is inspected may be further included.

[0037] In the present embodiment, the comparison still image may be one of the plurality of captured images of the substrate determined to be a good product among the plurality of captured images of the substrate.

[0038] In this embodiment, at least one of the first still image and the second still image can be generated at a certain time interval.

[0039] In the present embodiment, at least one of the first still image and the second still image can be generated according to the height of the substrate when the substrate is raised or lowered.

[0040] In this embodiment, the substrate is divided into a plurality of regions, and the first still image and the second still image can be generated for each region of the substrate.

[0041] Other aspects, features and advantages other than those described above will become apparent from the following drawings, claims and detailed description of the invention.

[0042] These general and specific aspects may be implemented using any system, method, computer program, or combination of any system, method, or computer program.

[0043] In the following description, for purposes of explanation, numerous specific details are set forth to provide an understanding of various embodiments or implementations of the invention. As used herein, the terms "embodiment" and "implementation" are interchangeable, referring to non-limiting examples of the devices or methods disclosed herein. However, it should be understood that various embodiments may be practiced without these specific details or with one or more equivalent arrangements. It should be understood that the various embodiments are not intended to be exclusive or limiting. For example, specific features, configurations, and characteristics of an embodiment may be utilized or implemented in other embodiments.

[0044] Unless otherwise specified, the described embodiments should be understood to provide features of the invention. Accordingly, unless otherwise specified, features, components, modules, layers, films, panels, regions, and / or aspects of the various embodiments (hereinafter individually or collectively referred to as "elements") may be combined, separated, exchanged, and / or rearranged without departing from the inventive concept.

[0045] The use of crosshatching and / or shading in the drawings is generally provided to clarify boundaries between adjacent elements. Therefore, unless otherwise specified, the presence or absence of crosshatching or shading in the drawings does not convey or indicate any preference or requirement for any particular material, material property, dimension, proportion, commonality between the depicted elements, and / or any other characteristic, property, or quality of the elements. Furthermore, the dimensions and relative sizes of elements in the accompanying drawings may be exaggerated for clarity and / or illustrative purposes. Where the embodiments can be implemented differently, certain process sequences may be performed differently from the illustrated sequence. For example, two processes described in succession may be performed substantially simultaneously or in the reverse order of the illustrated sequence. Furthermore, like reference numbers and / or reference letters indicate like elements.

[0046] When an element, such as a layer, is referred to as being "on," "connected to," or "coupled to" another element or layer, it may be directly on, connected to, or coupled to the other element or layer, or there may be intervening elements or layers. However, when an element or layer is referred to as being "directly on," "directly connected to," or "directly coupled to" another element or layer, there are no intervening elements or layers. For this purpose, the term "connected to" may refer to a physical, electrical, and / or fluid connection, with or without intervening elements. Furthermore, the x-axis, y-axis, and z-axis are not limited to the three axes of a rectangular coordinate system, such as the x, y, and z-axes, and may be interpreted in a broader sense. For example, the x-axis, y-axis, and z-axis may be perpendicular to one another, or they may represent different directions that are not perpendicular to one another.

[0047] For the purposes of the present invention, “at least one of A and B” can be interpreted as A alone, B alone, or any combination of A and B. Additionally, “at least one of X, Y, and Z” and “at least one selected from the group consisting of X, Y, and Z” can be interpreted as X alone, Y alone, Z alone, or any combination of two or more of X, Y, and Z. The term “and / or” as used herein includes any and all combinations of one or more of the associated listed items.

[0048] While the terms "first," "second," etc. may be used herein to describe various types of elements, these elements should not be limited by these terms. These terms are used to distinguish one element from another. Therefore, the first element discussed below could also be called a second element without departing from the teachings of the present invention.

[0049] Spatially relative terms such as "below," "beneath," "below," "beneath," "above," "above," "higher," "side" (as in "side wall"), and the like may be used herein for descriptive purposes to describe one element in relation to another as depicted in the drawings. Spatially relative terms are intended to encompass various orientations of the device during use, operation, and / or manufacture in addition to the orientation depicted in the drawings. For example, if the device in the drawings is turned over, an element described as "beneath" or "below" another element or feature is oriented "above" the other element or feature. Thus, the term "below" can encompass both the above and below orientations. Moreover, the device may be oriented in other orientations (e.g., rotated 90 degrees or in other directions), and the spatially relative descriptors used herein are to be interpreted accordingly.

[0050] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural as well, unless the context clearly dictates otherwise. Furthermore, the terms "comprises," "comprising," "includes," and / or "comprising" as used herein specify the presence of stated features, integers, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. Furthermore, the terms "substantially," "about," and other similar terms as used herein are used as terms of approximation rather than terms of degree, and are therefore used to account for inherent variations in measurements, calculations, and / or values ​​provided that will be recognized by those skilled in the art.

[0051] Various embodiments are described herein with reference to cross-sectional and / or exploded views, which are schematic drawings of embodiments and / or intermediate structures. Therefore, the shapes of the drawings may vary, for example, as a result of manufacturing techniques and / or tolerances. Therefore, the embodiments disclosed herein should not be construed as necessarily limited to the specific depicted shapes of the regions, but should include, for example, shape variations that occur during manufacturing. In this way, the regions depicted in the drawings may be schematic in nature, and the shapes of such regions may not necessarily reflect the actual shapes of the device regions and are therefore not intended to be limiting.

[0052] As is customary in the art, some embodiments are described and illustrated in the accompanying drawings in terms of functional blocks, units, and / or modules. Those skilled in the art will appreciate that these blocks, units, and / or modules may be physically implemented by electronic (or optical) circuits, such as logic circuits, discrete components, microprocessors, hard-wired circuits, memory elements, wiring connections, etc., which may be formed using semiconductor-based manufacturing techniques or other manufacturing techniques. When the blocks, units, and / or modules are implemented by microprocessors or other similar hardware, they may be programmed and controlled using software (e.g., microcode) to perform the various functions discussed herein, and may optionally be driven by firmware and / or software. Furthermore, each block, unit, and / or module may be implemented by dedicated hardware, or a combination of dedicated hardware that performs some functions and processors (e.g., one or more programmed microprocessors and associated circuitry) that perform other functions. Additionally, each block, unit, and / or module of some embodiments may be physically separated into two or more interacting and individual blocks, units, and / or modules without departing from the scope of the inventive concept. Furthermore, the blocks, units, and / or modules of some embodiments may be physically combined into more complex blocks, units, and / or modules without departing from the scope of the inventive concept.

[0053] Unless otherwise defined or implied herein, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the technology described in this specification pertains. Terms defined in commonly used dictionaries, for example, should be interpreted to have a meaning consistent with their meaning in the context of the relevant technology and disclosure, and should not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0054] Fig. 1 is a plan view schematically showing a manufacturing apparatus for a display device according to one embodiment of the present invention. Fig. 2a is a cross-sectional view showing an inspection unit of the manufacturing apparatus for the display device shown in Fig. 1. Fig. 2b is a perspective view showing the shuttle unit shown in Fig. 2a.

[0055] Referring to FIGS. 1 to 3, the manufacturing device (100) of the display device may include a loading unit (110), a process unit (120), an inspection unit (130), a substrate storage unit (130-1), a connection unit (140), and a shuttle unit (160).

[0056] The loading unit (110) can receive a display substrate (DP) supplied from an external source or another display device manufacturing device. The display substrate (DP) can be received in the loading unit (110) in various ways. For example, the display substrate (DP) can be placed in the loading unit (110) by a robot arm disposed outside or inside the loading unit (110). In another embodiment, the display substrate (DP) can be placed on a shuttle unit (160) that can freely move from the outside to the inside of the loading unit (110) and enter the loading unit (110) from the outside to the inside. For convenience of explanation, the following description will focus on a case where the display substrate (DP) moves from the outside to the inside of the loading unit (110) by means of a robot arm disposed inside the loading unit (110).

[0057] At least one process unit (120) may be provided. The process unit (120) may perform various processes. For example, the process unit (120) may form one layer constituting a display device. In another embodiment, the process unit (120) may form holes, etc. in at least one layer constituting a display device. In another embodiment, the process unit (120) may also remove at least one layer constituting a display device, leaving only a specific pattern on the display substrate (DP).

[0058] A plurality of process units (120) as described above may be provided, and the plurality of process units (120) may be connected to each other. Adjacent process units (120) may be selectively connected or disconnected. In addition, some of the plurality of process units (120) and other parts of the plurality of process units (120) may be arranged to be spaced apart from each other and connected by another unit.

[0059] The inspection unit (130) is connected to the process unit (120) and can invert the display substrate (DP) taken out from the process unit (120). At this time, the inspection unit (130) can be equipped with an inspection chamber (131), an imaging unit (132), a lighting unit (133), and a robot arm (134).

[0060] The inspection chamber (131) may have a space formed inside, and a gate valve that selectively opens and closes to communicate with the outside may be arranged. The upper surface of the inspection chamber (131) may be formed in a dome shape or an arch shape.

[0061] The imaging unit (132) may be arranged outside the inspection chamber (131). Specifically, the imaging unit (132) may include a first transparent window (132a) arranged in the inspection chamber (131) so as to allow the inside of the inspection chamber (131) to be viewed from outside the inspection chamber (131). The first transparent window (132a) may include a transparent material that can withstand heat, pressure, etc. and transmit light. The imaging unit (132) may include a vision unit (132b) arranged to correspond to the first transparent window (132a). The vision unit (132b) may include a camera (for example, a CCD camera) that captures an image or a video. At least one vision unit (132b) may be provided. When one vision unit (132b) is provided, the vision unit (132b) may capture the front surface of the display substrate (DP). On the other hand, when a plurality of vision units (132b) are provided, the plurality of vision units (132b) can each photograph a plurality of areas of one display substrate (DP). In this case, each vision unit (132b) can photograph only the respective areas of the display substrate (DP) corresponding to each vision unit (132b). The imaging unit (132) may include a support (132c) that fixes the vision unit (132b). The support (132c) may be connected to the outer surface of the inspection chamber (131) to maintain the vision unit (132b) at a constant angle. The imaging unit (132) may include a cover (132d) that is arranged on the outer surface of the inspection chamber (131) and shields the vision unit (132b), the support (132c), and the first transmission window (132a). The cover (132d) is coupled to the inspection chamber (131), and the cover (132d) can form a single space together with the outer surface of the inspection chamber (131).

[0062] The lighting unit (133) can irradiate light into the interior of the inspection chamber (131). At this time, the lighting unit (133) can include a second transmission window (133a) arranged on the outer surface of the inspection chamber (131) and a light (133b) arranged in the second transmission window (133a). The second transmission window (133a) can be similar to the first transmission window (132a). The light (133b) can include an LED and can have its brightness adjusted.

[0063] The robot arm (134) may be equipped with a mounting portion on which a display substrate (DP) is mounted. The mounting portion may rotate the display substrate (DP) to invert one side of the display substrate (DP). For example, the robot arm (134) may invert the display substrate (DP) so that one side of the display substrate (DP) facing the lower surface of the inspection chamber (131) faces the upper surface of the inspection chamber (131).

[0064] The substrate storage unit (130-1) can be connected to the inspection unit (130) and can store some of the display substrates (DP) inserted into the inspection unit (130). For example, the substrate storage unit (130-1) can temporarily place display substrates (DP) that are broken or damaged among the display substrates (DP) placed in the inspection unit (130) and are judged to be defective. At this time, the substrate storage unit (130-1) can form a space separate from the inspection unit (130) and can be selectively connected to or disconnected from the inspection unit (130). The substrate storage unit (130-1) as described above is formed identically or similarly to the inspection chamber (131) and can include a storage chamber for temporarily storing the display substrates (DP) and a tray disposed inside the storage chamber to accommodate the display substrates (DP). At this time, the display substrates (DP) of the inspection chamber (131) can be moved to the storage chamber via the robot arm (134). As another embodiment, the storage chamber may be provided with a separate robot arm, and a separate shuttle may be provided to move between the storage chamber and the inspection chamber (131).

[0065] The connecting portion (140) can be connected to the inspection portion (130). The connecting portion (140) can temporarily store the inverted display substrate (DP) in the inspection portion (130) and then transport it to the outside or transfer it to a manufacturing device of another display device.

[0066] The shuttle unit (160) can move through the loading unit (110), the process unit (120), the inspection unit (130), and the connection unit (140). Although not shown in the drawing, the shuttle unit (160) can be moved by being seated on a shuttle drive unit including a rail, a linear motor, etc., which are arranged inside each of the loading unit (110), the process unit (120), the inspection unit (130), and the connection unit (140). The shuttle unit (160) can seat a display substrate (DP) in the loading unit (110) and move it to the process unit (120), and support the display substrate (DP) during the process performed in the process unit (120). The shuttle unit (160) can elevate the display substrate (DP) transported to the inspection unit (130).

[0067] The shuttle unit (160) as described above may include a shuttle body unit (161) that is connected to the shuttle driving unit and moves according to the operation of the shuttle driving unit. The shuttle unit (160) may include a lift pin (162) that is arranged on the shuttle body unit (161) to raise and lower the display substrate (DP). At this time, the lift pin (162) may separate the display substrate (DP) from the shuttle body unit (161) or support the display substrate (DP) at a spaced upper portion of the shuttle body unit (161) and then move it to the outer surface of the shuttle body unit (161). The shuttle body unit (161) as described above may have a flat surface on which the display substrate (DP) is seated. A plurality of lift pins (162) may be provided, and a plurality of lift pins (162) may be arranged to be spaced apart from each other on one surface of the shuttle body unit (161). A plurality of lift pins (162) can be withdrawn from the shuttle body (161) to move the display substrate (DP) by a certain height (H). The display substrate (DP) can move from the lowest point (Hmin) to the highest point (Hmax). In addition, the display substrate (DP) can also move from the highest point (Hmax) to the lowest point (Hmin).

[0068] The manufacturing device (100) of the display device as described above may include a simulation unit and a control unit. The simulation unit and the control unit will be described in detail below.

[0069] Fig. 3 is a block diagram schematically showing the control flow of the manufacturing device of the display device illustrated in Fig. 1. Fig. 4 is a drawing schematically showing the second still image generated in the generation unit illustrated in Fig. 3. Fig. 5 is a flowchart showing the control sequence of the manufacturing device of the display device illustrated in Fig. 2.

[0070] Referring to FIGS. 3 and 4, the manufacturing device for a display device may include a simulation unit (170), a control unit (180), and a notification unit (190). The simulation unit (170) may perform learning to generate data when a display substrate, which is a comparison target required for determining whether a display substrate is good, is good. The control unit (180) may compare a good product image generated through learning with an image captured by the vision unit (132b) to determine whether a display substrate placed inside the inspection unit (130) is defective.

[0071] Specifically, the simulation unit (170) may include a generation unit (171) and a judgment unit (172).

[0072] The generation unit (171) can generate first data that is almost identical to the input data and second data that is different from the input data based on input data input from the outside. For example, the generation unit (171) can include an autoencoder, which is a learning model. As illustrated in FIG. 4, the generation unit (171) can receive a video or photo taken by the vision unit (132b), which is input data, and generate a first still image, which is an image when the display board is a good product. The video or photo taken by the vision unit (132b) may relate to a plurality of display boards. The generation unit (171) can receive an image taken by the vision unit (132b), which is input data, and generate a second still image, which is an image when the display board is a defective product. The video or photo taken by the vision unit (132b) may be a video or photo when the display board is a good product, for example, light D1 and D2. The second still image can be generated in various ways. For example, as illustrated in FIG. 4, the second still image can be generated by adding or deleting (D1-1) the number of lights shining on the display substrate from the still image when the substrate is a good product. As another embodiment, the second still image can be generated by cutting out a portion of the still image when the substrate is a good product and placing it at a randomly selected random location. The second still image can add an arbitrary straight line (D3) to a specific area within the still image when the display substrate is a good product. The thickness, placement location, angle formed in one direction, shape, etc. of the arbitrary straight line added to the still image can be randomly determined. The first still image and the second still image as described above can mean a photograph of a specific time, a specific height, or a specific display substrate.

[0073] The judgment unit (172) can compare the first still image and the second still image generated by the generation unit (171) to determine whether the first still image and the second still image are still images when the display substrate is a good product. In addition, the judgment unit (172) can compare the judgment rate at which the first still image and the second still image are judged to be a good product with a preset value to determine whether the learning model is accurate.

[0074] The control unit (180) can determine whether a defect has occurred in an actual process through the final model, which is the learning model ultimately determined by performing the above process. In addition, the control unit (180) can control the operation of the manufacturing device (100, see FIG. 1) of the display device.

[0075] The control unit (180) may include a determination unit (181) that determines whether the display substrate is defective based on the final model.

[0076] The notification unit (190) can notify an external user when the determination unit (181) determines that the display board is defective. At this time, the notification unit (190) can generate sounds, images, letters, lights, etc. For example, the notification unit (190) can include a speaker, a display device, a lamp, etc. When the notification unit (190) includes a display device, the display device can display each area of ​​the display board by distinguishing it.

[0077] Looking at the operation of the manufacturing device of the display device as described above, when the manufacturing device of the display device is operated, the display substrate can be inverted inside the inspection unit (130). The display substrate can be raised and lowered from the shuttle body unit (161) by the lift pin (162). When the display substrate is raised and lowered as described above, the display substrate may be damaged due to the operating speed of each lift pin (162), the presence or absence of a malfunction, and the uneven thickness of the display substrate.

[0078] The vision unit (132b) can capture video or photos at regular time intervals when the display substrate is separated from the shuttle body unit (161). A plurality of vision units (132b) can capture a plurality of areas of the display substrate (e.g., area S1, area S2, area S3, area S4 of FIG. 4), respectively.

[0079] As described above, the video captured by the vision unit (132b) or the photos captured at regular time intervals can be stored for each display board. When an external signal such as a user's signal is input, the video or photo of the display board in good condition among the stored videos or photos can be transmitted to the generation unit (171). At this time, the video or photo of the display board transmitted to the generation unit (171) may include a video or photo of at least one display board. For the convenience of explanation, the following description will be made in detail focusing on the case where the videos or photos of multiple display boards are transmitted to the generation unit (171) in a state classified by each display board. (Step S110)

[0080] The generation unit (171) can generate a first still image when the display board is a good product and a second still image when the display board is a defective product through a learning model based on a still image of a good product of the display board. The first still image may include features of the actual display board when it is a good product. In this case, the features of the actual display board when it is a good product may be preset in the learning model (step S120).

[0081] As an example, the first still image and the second still image as described above can be generated at a certain time interval. For example, when a video captured by the vision unit (132b) is input to the generation unit (171), the generation unit (171) can capture images at a certain time interval from the video and generate the first still image and the second still image based on the captured images. In addition, the generation unit (171) can generate the first still image and the second still image for each photo of the display substrate.

[0082] As another embodiment, the generation unit (171) may generate the first still image and the second still image according to the elevation height of the display substrate. For example, the generation unit (171) may generate the first still image and the second still image when the display substrate comes into contact with the shuttle body unit (161), generate the first still image and the second still image when the display substrate is spaced apart from the shuttle body unit (161) by a certain distance, and generate the first still image and the second still image when the display substrate is spaced apart from the shuttle body unit (161) by a maximum distance. At this time, the generation unit (171) may also generate the first still image and the second still image at a certain distance from the lowest point of the display substrate to the highest point of the display substrate.

[0083] In the above case, the generation unit (171) can also be generated for each area of ​​the display substrate. When a video or photo of each area of ​​the display substrate is input, the generation unit (171) can also generate a first still image and a second still image for each area of ​​the display substrate.

[0084] In the above case, the generation unit (171) can generate a plurality of first still images and a plurality of second still images.

[0085] The first still image and the second still image may be still images generated at the same time and height from a video or multiple photos of one display substrate. That is, the generation unit (171) may generate the first still image and the second still image from a video of one display substrate at a preset time or from a photo taken at a preset time. The generation unit (171) may generate the first still image and the second still image from a video of one display substrate when the height of the display substrate is a preset height or from a photo taken at a preset height when one display substrate is raised or lowered. In another embodiment, the generation unit (171) may generate the first still image at a first time from a video of one display substrate or from multiple photos of one display substrate, and may also generate the second still image at a second time different from the first time from the video or multiple photos of one display substrate. The generation unit (171) can generate a first still image when the height of the display substrate is a first height from a video or multiple photos of one display substrate, and can also generate a second still image when the height of the display substrate is a second height. In another embodiment, the generation unit (171) can generate a first still image at a certain time interval or a certain height interval of the display substrate from a video or multiple photos of one display substrate, and can also generate a second still image only at a specific time or at a specific height.

[0086] As another example, the generation unit (171) can also generate a first still image and a second still image by combining videos of different display substrates or photos of different display substrates.

[0087] The generation unit (171) can generate a plurality of first still images and a plurality of second still images. At this time, the plurality of first still images and the plurality of second still images may be images of one display substrate. The generation unit (171) can generate at least one first still image and at least one second still image for each of the plurality of display substrates.

[0088] For convenience of explanation, the following description will focus on a case where the generation unit (171) generates multiple first still images and multiple second still images for each display substrate from a video or photograph taken of multiple display substrates.

[0089] The judgment unit (172) can compare the first still image and the second still image generated by the generation unit (171) with the comparison still image. The comparison still image may be a still image when the display substrate is a good product. In this case, the comparison still image may use a captured image of a video of the display substrate determined to be a good product or multiple photographs. The comparison still image may be a still image corresponding to at least one of the time and the height of the display substrate corresponding to each of the first and second still images.

[0090] The judgment unit (172) can compare the comparative still image with the first still image and the second still image to calculate an outlier score. At this time, the outlier score means a difference between the first still image and the second still image and the comparative still image, converted into a score. For example, the difference in luminance can be converted into a score by comparing the luminance of an area of ​​one of the first still image or the second still image with the luminance of an area of ​​the corresponding comparative still image. If a line exists in an area of ​​one of the first still image or the second still image, the thickness, shape, degree of rotation, length, etc. of the line can be compared with a part of the corresponding comparative still image, and the degree of difference can be converted into a score. The scores converted as described above can be added up for the first still image and the second still image, and then determined as the first outlier score of the first still image and the second outlier score of the second still image. At this time, the judgment unit (172) can judge whether the first outlier score and the second outlier score exceed a preset value. If the first outlier score exceeds the preset value, the judgment unit (172) can judge the first still image as an image of a defective product. If the second outlier score exceeds the preset value, the judgment unit (172) can judge the second still image as an image of a defective product. On the other hand, if the first outlier score or the second outlier score is lower than the preset value, the judgment unit (172) can judge at least one of the first still image and the second still image as an image of a good display substrate. However, in this case, since the second still image has many characteristics of a defective product compared to the comparison still image, most of the second still images among the plurality of second still images can be judged as images of a defective product.

[0091] The judgment unit (172) can determine whether the quality ratio of the image when the display board is a good product is greater than or equal to a preset setting ratio. Specifically, the judgment unit (172) can compare a plurality of first still images and a plurality of second still images with corresponding comparison still images to determine whether each first still image and each second still image is an image when the display board is a defective product or an image when the display board is a good product. The judgment unit (172) can calculate the quality ratio of the images determined to be good products among all the first still images and the second still images. The judgment unit (172) can compare the quality ratio with a preset setting ratio (e.g., 98% or more). (Step S130)

[0092] The judgment unit (172) can select the learning model as the final model and transmit it to the control unit (180) if the calculated good product ratio is greater than or equal to the preset setting ratio (steps S140 and S150).

[0093] On the other hand, if the ratio of the produced image is less than the preset ratio, the judgment unit (172) can perform steps S110 to S140 again. Specifically, the generation unit (171) can generate new first and second still images through a video or photo of a display substrate judged to be good at a different time, which is new data that was not used when generating the first and second still images described above among the images captured by the vision unit (132b).

[0094] The judgment unit (172) can calculate the quality ratio by comparing the newly added first and second still images and the previously generated first and second still images with the comparison still images. In another embodiment, the rupture unit (172) can also calculate the quality ratio based only on the newly added first and second still images.

[0095] The judgment unit (172) may proceed with steps S110 to S140 based on the quality ratio and set ratio calculated as described above, or may determine the learning model as the final model and transmit it to the control unit (180). At this time, the control unit (180) may implant the final model into the judgment unit (181), and the judgment unit (181) may compare the final model with the actual image input in real time.

[0096] Specifically, once the final model is selected, the judgment unit (172) can generate a final still image of the display substrate when it is a good product based on the final model. At this time, the final still image may be a still image having a constant time interval from the lowest point to the highest point when one display substrate is raised or lowered by a lift (step S160).

[0097] The determination unit (181) can compare the generated final still image with the selected still image by time and corresponding height among the captured images captured and transmitted in real time. The determination unit (181) calculates a third outlier score between the final still image and the captured still image according to a preset time interval (or preset height) and compares this third outlier score with a preset value to determine whether a defect has occurred in the display substrate currently being processed. A defect in the display substrate may mean a crack. The comparison of the generated final still image with the corresponding still image among the captured images captured and transmitted in real time by the determination unit (181) can be performed by time, height, and area when the display substrate moves from the lowest point to the highest point, as illustrated in FIG. 2B. (Step S170)

[0098] The control unit (180) can determine whether the number of times a display substrate is judged to be defective during a certain period of time (or while the display substrate reaches its highest point from its lowest point) is greater than or equal to a preset number (M) during a certain period of time (step S180). The number of times a display substrate is judged to be defective can be calculated from one display substrate.

[0099] If the control unit (180) determines that the number of times the display board is judged to be defective is greater than a preset number (M), the control unit (180) can notify the user of the occurrence of a defect in the display board through the notification unit (190). In addition, if the display board is judged to be defective, the control unit (180) can transport the display board judged to be defective to the storage chamber (130-1). If the control unit (180) determines that the display board is defective, it can also stop the operation of the lift (step S190).

[0100] Meanwhile, the display substrate stored in the storage chamber (130-1) as described above can be checked by the user for defects using a separate vision unit or with the naked eye (step S191). If the display substrate determined as a defective product by the determination unit (181) is confirmed to be a good product, the user can input an external signal to save a video or photo of the corresponding display substrate. At this time, the saved video or photo of the display substrate can be stored in a separate storage medium (191). (step S192) In addition, the video or photo of the display substrate stored in the storage medium can be transmitted to the generation unit (171) (step S194) again according to the external signal input, and can be used for learning of the learning model by performing steps S110 to S140.

[0101] Through the above process, the learning model can more accurately learn the characteristics of a good display substrate.

[0102] Meanwhile, the control unit (180) can also transmit a comparative still image to the simulation unit (170). For example, the control unit (180) can calculate a fourth outlier score by comparing the final still image with the video or photo of one display board actually determined to be a good product for each time period, each height of one display board, and each area of ​​one display board. The control unit (180) can transmit the video or photo of the display board having the median value among the fourth outlier scores of each display board determined to be a good product to the simulation unit (170) as a comparative still image. At this time, the comparative still image can be an image having the median value of the fourth outlier score among the videos or photos of the same time period among the plurality of display boards, the videos or photos of the same height among the plurality of display boards, or the videos or photos of the same area among the plurality of display boards.

[0103] The control unit (180) and the simulation unit (170) can uniformly process or delete from the fixed image areas where excessive deformation occurs when processing the fixed image. For example, the control unit (180) and the simulation unit (170) can use the fixed image excluding the border area of ​​the display substrate including the border (DPE) illustrated in FIG. 4 and some areas adjacent to the border (DPE) when processing the fixed image.

[0104] Therefore, the display device manufacturing device and the display device manufacturing method can accurately and quickly determine whether the display substrate is defective during the display device manufacturing process. The display device manufacturing device and the display device manufacturing method can detect if the display substrate is broken or damaged during the display device manufacturing process, stop the operation of the display device manufacturing device, and perform the removal of defective products and maintenance of the display device manufacturing device, thereby increasing manufacturing efficiency.

[0105] A manufacturing device for a display device and a manufacturing method for a display device can shorten the downtime of a manufacturing device for a display device by transferring a display substrate determined to be defective to a storage chamber.

[0106] The manufacturing device and manufacturing method of the display device can improve the accuracy of identifying good products by continuously upgrading the learning model that generates the image of the good product.

[0107] A manufacturing device for a display device and a manufacturing method for a display device can reduce the defect rate during the manufacturing of the manufactured display device.

[0108] FIG. 6 is a plan view schematically showing a display device according to embodiments of the present invention.

[0109] Referring to FIG. 6, the display device (30) may include a display area (DA) and a peripheral area (PA) located outside the display area (DA). The display device (30) may provide an image through an array of a plurality of pixels (PX) arranged two-dimensionally in the display area (DA).

[0110] The peripheral area (PA) is an area that does not provide an image and may completely or partially surround the display area (DA). Drivers, etc. that provide electrical signals or power to the pixel circuits corresponding to each pixel (PX), may be located in the PA. Pads, which are areas to which electronic components or printed circuit boards can be electrically connected, may also be located in the PA.

[0111] Hereinafter, the display device (30) is described as including an organic light emitting diode (OLED) as a light emitting element, but the display device (30) of the present invention is not limited thereto. As another embodiment, the display device (30) may be a light emitting display device including an inorganic light emitting diode, i.e., an inorganic light emitting display device (Inorganic Light Emitting Display). The inorganic light emitting diode may include a PN diode including inorganic semiconductor-based materials. When a voltage is applied in the forward direction to the PN junction diode, holes and electrons are injected, and energy generated by the recombination of the holes and electrons is converted into light energy to emit light of a predetermined color. The above-described inorganic light emitting diode may have a width of several to several hundred micrometers, and in some embodiments, the inorganic light emitting diode may be referred to as a micro LED. As another embodiment, the display device (30) may be a quantum dot light emitting display device (Quantum dot Light Emitting Display).

[0112] Meanwhile, the display device (30) can be used as a display screen for various products such as portable electronic devices such as mobile phones, smart phones, tablet personal computers (PCs), mobile communication terminals, electronic notebooks, electronic books, portable multimedia players (PMPs), navigation devices, and Ultra Mobile PCs (UMPCs), as well as televisions, laptops, monitors, billboards, and Internet of Things (IOT) devices. In addition, the display device (30) according to one embodiment can be used for wearable devices such as smart watches, watch phones, glasses-type displays, and head mounted displays (HMDs). In addition, the display device (30) according to one embodiment can be used as a dashboard of a vehicle, a CID (Center Information Display) placed on a center console or dashboard of a vehicle, a room mirror display replacing a side mirror of a vehicle, and a display screen placed on the back of the front seat as entertainment for the rear seat of a vehicle.

[0113] Fig. 7 is a cross-sectional view showing a portion of the display device taken along line Ⅶ-Ⅶ´ of Fig. 6.

[0114] Referring to FIG. 7, the display device (30) may include a laminated structure of a substrate (10), a pixel circuit layer (PCL), a display element layer (DEL), and an encapsulation layer (300). The display substrate may be a concept including a substrate (10), a concept including a layer disposed between one layer of a pixel circuit layer (PCL) from the substrate (10), a concept including a layer disposed from the substrate (10) to one layer of a display element layer (DEL), or a concept including a layer disposed from the substrate (10) to one layer of an encapsulation layer (300). However, for the convenience of explanation, the display substrate described above may refer to a substrate (10) and layers disposed from the substrate (10) to a bank layer (1117).

[0115] The substrate (10) may have a multilayer structure including a base layer containing a polymer resin and an inorganic layer. For example, the substrate (10) may include a base layer containing a polymer resin and a barrier layer of an inorganic insulating layer. For example, the substrate (10) may include a first base layer (11), a first barrier layer (12), a second base layer (13), and a second barrier layer (14) that are sequentially laminated. The first base layer (11) and the second base layer (13) may include polyimide (PI), polyethersulfone (PES), polyarylate, polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polycarbonate, cellulose triacetate (TAC), and / or cellulose acetate propionate (CAP). The first barrier layer (12) and the second barrier layer (14) may include an inorganic insulating material such as silicon oxide, silicon oxynitride, and / or silicon nitride. The substrate (10) may have flexible characteristics.

[0116] A pixel circuit layer (PCL) is arranged on a substrate (10). FIG. 5 illustrates that the pixel circuit layer (PCL) includes a thin film transistor (TFT), and a buffer layer (1111), a first gate insulating layer (1112), a second gate insulating layer (1113), an interlayer insulating layer (1114), a first planarization insulating layer (1115), and a second planarization insulating layer (1116) arranged under and / or over components of the thin film transistor (TFT).

[0117] The buffer layer (1111) can reduce or block the penetration of foreign substances, moisture, or external air from the lower portion of the substrate (10), and can provide a flat surface on the substrate (10). The buffer layer (1111) can include an inorganic insulating material such as silicon oxide, silicon oxynitride, or silicon nitride, and can be formed as a single layer or multilayer structure including the aforementioned materials.

[0118] A thin film transistor (TFT) on a buffer layer (1111) includes a semiconductor layer (Act), and the semiconductor layer (Act) may include polysilicon (poly-Si). The semiconductor layer (Act) may include amorphous silicon (a-Si), an oxide semiconductor, an organic semiconductor, or the like. The semiconductor layer (Act) may include a channel region (C) and a drain region (D) and a source region (S) respectively disposed on both sides of the channel region (C). A gate electrode (GE) may overlap the channel region (C).

[0119] The gate electrode (GE) may include a low-resistance metal material. The gate electrode (GE) may include a conductive material including molybdenum (Mo), aluminum (Al), copper (Cu), titanium (Ti), etc., and may be formed as a multilayer or single layer including the above materials.

[0120] The first gate insulating layer (1112) between the semiconductor layer (Act) and the gate electrode (GE) is made of silicon oxide (SiO2) or silicon nitride (SiN). x ), silicon oxynitride (SiON), aluminum oxide (Al2O3), titanium oxide (TiO2), tantalum oxide (Ta2O5), hafnium oxide (HfO2), and / or zinc oxide (ZnO x ) may include inorganic insulators such as zinc oxide (ZnO). x ) may be zinc oxide (ZnO), and / or zinc peroxide (ZnO2).

[0121] The second gate insulating layer (1113) may be provided to cover the gate electrode (GE). The second gate insulating layer (1113) may be formed of silicon oxide (SiO2), silicon nitride (SiN), similar to the first gate insulating layer (1112). x ), silicon oxynitride (SiON), aluminum oxide (Al2O3), titanium oxide (TiO2), tantalum oxide (Ta2O5), hafnium oxide (HfO2), and / or zinc oxide (ZnO x ) may include inorganic insulators such as zinc oxide (ZnO). x ) may be zinc oxide (ZnO), and / or zinc peroxide (ZnO2).

[0122] An upper electrode (Cst2) of a storage capacitor (Cst) may be arranged on the second gate insulating layer (1113). The upper electrode (Cst2) may overlap with the gate electrode (GE) underneath. The gate electrode (GE) and the upper electrode (Cst2) overlapping with the second gate insulating layer (1113) interposed therebetween may form a storage capacitor (Cst). The gate electrode (GE) may function as a lower electrode (Cst1) of the storage capacitor (Cst).

[0123] In this way, the storage capacitor (Cst) and the thin film transistor (TFT) can be formed to overlap. In some embodiments, the storage capacitor (Cst) may be formed so as not to overlap the thin film transistor (TFT).

[0124] The upper electrode (Cst2) may include aluminum (Al), platinum (Pt), palladium (Pd), silver (Ag), magnesium (Mg), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), calcium (Ca), molybdenum (Mo), titanium (Ti), tungsten (W), and / or copper (Cu), and may be a single layer or multiple layers of the aforementioned materials.

[0125] The interlayer insulating layer (1114) can cover the upper electrode (Cst2). The interlayer insulating layer (1114) can be made of silicon oxide (SiO2), silicon nitride (SiN x ), silicon oxynitride (SiON), aluminum oxide (Al2O3), titanium oxide (TiO2), tantalum oxide (Ta2O5), hafnium oxide (HfO2), and / or zinc oxide (ZnO x ) may include zinc oxide (ZnO). x ) may be zinc oxide (ZnO) and / or zinc peroxide (ZnO2). The interlayer insulating layer (1114) may be a single layer or multiple layers including the aforementioned inorganic insulating material.

[0126] The drain electrode (DE) and the source electrode (SE) may be respectively positioned on the interlayer insulating layer (1114). The drain electrode (DE) and the source electrode (SE) may be respectively connected to the drain region (D) and the source region (S) through contact holes formed in the insulating layers therebelow. The drain electrode (DE) and the source electrode (SE) may include a material having good conductivity. The drain electrode (DE) and the source electrode (SE) may include a conductive material including molybdenum (Mo), aluminum (Al), copper (Cu), titanium (Ti), or a combination thereof, and may be formed as a multilayer or single layer including the above materials. In one embodiment, the drain electrode (DE) and the source electrode (SE) may have a multilayer structure of Ti / Al / Ti.

[0127] The first planarization insulating layer (1115) may cover the drain electrode (DE) and the source electrode (SE). The first planarization insulating layer (1115) may include an organic insulator such as a general-purpose polymer such as polymethylmethacrylate (PMMA) or polystyrene (PS), a polymer derivative having a phenolic group, an acrylic polymer, an imide polymer, an aryl ether polymer, an amide polymer, a fluorinated polymer, a p-xylene polymer, a vinyl alcohol polymer, or a blend thereof.

[0128] The second planarization insulating layer (1116) may be disposed on the first planarization insulating layer (1115). The second planarization insulating layer (1116) may include the same material as the first planarization insulating layer (1115), and may include an organic insulator such as a general-purpose polymer such as polymethylmethacrylate (PMMA) or polystyrene (PS), a polymer derivative having a phenolic group, an acrylic polymer, an imide polymer, an aryl ether polymer, an amide polymer, a fluorinated polymer, a p-xylene polymer, a vinyl alcohol polymer, or a blend thereof.

[0129] A display element layer (DEL) may be arranged on the pixel circuit layer (PCL) of the above-described structure. The display element layer (DEL) includes an organic light-emitting diode (OLED) as a display element (i.e., a light-emitting element), and the organic light-emitting diode (OLED) may include a laminated structure of a pixel electrode (210), an intermediate layer (220), and a common electrode (230). The organic light-emitting diode (OLED) may emit, for example, red, green, or blue light, or may emit red, green, blue, or white light. The organic light-emitting diode (OLED) emits light through a light-emitting area, and the light-emitting area may be defined as a pixel (PX).

[0130] The pixel electrode (210) of the organic light-emitting diode (OLED) can be electrically connected to a thin film transistor (TFT) through contact holes formed in the second planarization insulating layer (1116) and the first planarization insulating layer (1115) and a contact metal (CM) disposed on the first planarization insulating layer (1115).

[0131] The pixel electrode (210) may include a conductive oxide such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium oxide (In2O3), indium gallium oxide (IGO), and / or aluminum zinc oxide (AZO). In another embodiment, the pixel electrode (210) may include a reflective film including silver (Ag), magnesium (Mg), aluminum (Al), platinum (Pt), palladium (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), or a compound thereof. In another embodiment, the pixel electrode (210) may further include a film formed of ITO, IZO, ZnO, and / or In2O3 on / under the aforementioned reflective film.

[0132] A bank layer (1117) having an opening (117OP) exposing a central portion of the pixel electrode (210) is disposed on the pixel electrode (210). The bank layer (1117) may include an organic insulating material and / or an inorganic insulating material. The opening (117OP) may define an emission area of ​​light emitted from an organic light-emitting diode (OLED). For example, the size / width of the opening (117OP) may correspond to the size / width of the emission area. Accordingly, the size and / or width of the pixel (PX) may depend on the size and / or width of the opening (117OP) of the corresponding bank layer (1117).

[0133] The intermediate layer (220) may include a light-emitting layer (2222) formed to correspond to the pixel electrode (210). The light-emitting layer (2222) may include a polymer or low-molecular organic material that emits light of a predetermined color. The light-emitting layer (2222) may include an inorganic light-emitting material or a quantum dot.

[0134] In one embodiment, the intermediate layer (220) may include a first functional layer (22221) and a second functional layer (2223) which are respectively disposed below and above the light-emitting layer (2222). The first functional layer (22221) may include, for example, a hole transport layer (HTL) or a hole transport layer and a hole injection layer (HIL). The second functional layer (2223) is a component disposed above the light-emitting layer (2222) and may include an electron transport layer (ETL) and / or an electron injection layer (EIL). The first functional layer (22221) and / or the second functional layer (2223) may be a common layer formed to entirely cover the substrate (10), similar to the common electrode (230) described below.

[0135] The common electrode (230) is disposed on the pixel electrode (210) and may overlap with the pixel electrode (210). The common electrode (230) may be formed of a conductive material having a low work function. For example, the common electrode (230) may include a (semi-)transparent layer including silver (Ag), magnesium (Mg), aluminum (Al), platinum (Pt), palladium (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), lithium (Li), calcium (Ca), or an alloy thereof. The common electrode (230) may further include a layer such as ITO, IZO, ZnO, and / or In2O3 on the (semi-)transparent layer including the aforementioned material. The common electrode (230) may be integrally formed to entirely cover the substrate (10).

[0136] The encapsulation layer (300) is disposed on the display element layer (DEL) and can cover the display element layer (DEL). The encapsulation layer (300) includes at least one inorganic encapsulation layer and at least one organic encapsulation layer, and as an example, FIG. 7 illustrates that the encapsulation layer (300) includes a first inorganic encapsulation layer (310), an organic encapsulation layer (320), and a second inorganic encapsulation layer (330) that are sequentially stacked.

[0137] The first inorganic sealing layer (310) and the second inorganic sealing layer (330) may include one or more inorganic materials selected from the group consisting of aluminum oxide, titanium oxide, tantalum oxide, hafnium oxide, zinc oxide, silicon oxide, silicon nitride, and silicon oxynitride. The organic sealing layer (320) may include a polymer-based material. The polymer-based material may include at least one or more of acrylic resin, epoxy resin, polyimide, and polyethylene. In one embodiment, the organic sealing layer (320) may include acrylate. The organic sealing layer (320) may be formed by curing a monomer or applying a polymer. The organic sealing layer (320) may be transparent.

[0138] Although not shown, a touch sensor layer may be placed on the sealing layer (300), and an optical function layer may be placed on the touch sensor layer. The touch sensor layer may obtain coordinate information according to an external input, for example, a touch event.

[0139] The optical functional layer can reduce the reflectivity of light (external light) incident from the outside toward the display device and / or improve the color purity of light emitted from the display device. In one embodiment, the optical functional layer can include a phase retarder and / or a polarizer. The phase retarder can be a film type or a liquid crystal coating type, and can include a λ / 2 phase retarder and / or a λ / 4 phase retarder. The polarizer can also be a film type or a liquid crystal coating type. The film type can include a stretchable synthetic resin film, and the liquid crystal coating type can include liquid crystals arranged in a predetermined array. The phase retarder and the polarizer can further include a protective film.

[0140] An adhesive material may be placed between the touch electrode layer and the optical function layer. The adhesive material may be any material known in the art without limitation. The adhesive material may be a pressure-sensitive adhesive (PSA).

[0141] In another embodiment, the optical functional layer may include a quantum dot layer including quantum dots and a color filter. In another embodiment, the optical functional layer may also include a color filter.

[0142] FIG. 8 is a circuit diagram schematically showing an equivalent circuit of a pixel of a display device according to one embodiment of the present invention.

[0143] Referring to FIG. 8, each pixel (PX) may include a pixel circuit (PC) and a display element, such as an organic light-emitting diode (OLED), connected to the pixel circuit (PC). The pixel circuit (PC) may include a first thin-film transistor (T1), a second thin-film transistor (T2), and a storage capacitor (Cst). Each pixel (PX) may emit light of, for example, red, green, blue, or white through the organic light-emitting diode (OLED).

[0144] The second thin-film transistor (T2) is a switching thin-film transistor, and is electrically connected to a scan line (SL) and a data line (DL), and can transmit a data voltage input from the data line (DL) to the first thin-film transistor (T1) based on a switching voltage input from the scan line (SL). The storage capacitor (Cst) is electrically connected to the second thin-film transistor (T2) and the driving voltage line (PL), and can store a voltage corresponding to the difference between the voltage transmitted from the second thin-film transistor (T2) and the first power voltage (ELVDD) supplied to the driving voltage line (PL).

[0145] The first thin film transistor (T1) is a driving thin film transistor, which is electrically connected to a driving voltage line (PL) and a storage capacitor (Cst), and can control a driving current flowing through an organic light emitting diode (OLED) from the driving voltage line (PL) in response to a voltage value stored in the storage capacitor (Cst). The organic light emitting diode (OLED) can emit light having a predetermined brightness according to the driving current. The opposite electrode (e.g., cathode) of the organic light emitting diode (OLED) can be supplied with a second power voltage (ELVSS).

[0146] Although Fig. 9 illustrates that the pixel circuit (PC) includes two thin film transistors and one storage capacitor, the present invention is not limited thereto. The number of thin film transistors and the number of storage capacitors may vary depending on the design of the pixel circuit (PC). For example, the pixel circuit (PC) may further include four, five, or more thin film transistors in addition to the two thin film transistors described above.

[0147] While the present invention has been described with reference to the embodiments illustrated in the drawings, these are merely exemplary, and those skilled in the art will appreciate that various modifications and variations of the embodiments are possible. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the appended claims.

[0148] According to one embodiment of the present invention, a manufacturing device and a manufacturing method are provided, so that embodiments of the present invention can be applied when manufacturing a display device including an organic light-emitting diode.

Claims

1. A shuttle section having a lift pin for raising and lowering the substrate; An imaging unit for capturing multiple images of the above substrate; A generation unit equipped with a learning model that generates at least one first still image, which is an image when the substrate is a good product, and at least one second still image, which is an image when the substrate is a defective product, based on an image of the substrate taken by the above-described imaging unit when the substrate is a good product; and A manufacturing device for a display device, comprising: a judgment unit that compares the first still image and the second still image with a comparison still image of the preset substrate to determine whether the first still image and the second still image are images of a good product or images of a defective product.

2. In paragraph 1, The above judgment unit calculates a first outlier score by comparing the outlier scores between the comparison still image and the first still image, A second outlier score is calculated by comparing the outlier scores between the above comparison still image and the second still image. Determine whether the first abnormality score exceeds a preset value to determine whether the first still image is an image of a defective product, A manufacturing device for a display device that determines whether a second still image is an image of a defective product by determining whether the second abnormality score exceeds a preset value.

3. In paragraph 2, A manufacturing device for a display device, wherein the generating unit adds a new captured image captured by the imaging unit to the learning model when the image determined as a good product image by the judging unit among the first still image and the second still image is less than a certain ratio, and regenerates the first still image and the second still image based on the learning model.

4. In paragraph 2, The above judgment unit is a manufacturing device of a display device that selects the above learning model as the final model when the above learning model satisfies certain conditions.

5. In paragraph 4, A manufacturing device for a display device, wherein the final model is mounted, and further comprising a determination unit that determines whether the substrate is a good product based on an image captured by the photographing unit and a final image of a good product generated from the final model.

6. In paragraph 5, An inspection chamber in which the shuttle section is stored inside and the imaging section is placed outside; and A manufacturing device for a display device, further comprising: a substrate storage unit connected to the inspection chamber, wherein the substrate is determined to be defective by the judgment unit, and the substrate storage unit stores the substrate determined to be defective.

7. In paragraph 1, A manufacturing device for a display device in which the above first still image and the above second still image are generated at a constant time price.

8. In paragraph 1, A manufacturing device for a display device in which the first still image and the second still image are generated according to the rising height of the substrate.

9. In paragraph 1, A manufacturing device for a display device in which the substrate is divided into a plurality of regions, and the first still image and the second still image are generated for each region of the substrate.

10. In paragraph 1, The above judgment unit is a manufacturing device of a display device that compares the brightness of at least one of the first still image and the second still image with the brightness of the comparison still image.

11. In paragraph 1, The above-mentioned imaging unit, A transparent window placed on the exterior of the inspection chamber; A vision unit arranged to correspond to the above-mentioned transmission window; and A manufacturing apparatus for a display device, comprising: a cover arranged to surround the vision section and connected to the inspection chamber; 12. Step of taking multiple images of the substrate; A step of using a learning model to generate a first still image of the substrate as a good product and a second still image of the substrate as a defective product based on an image of the substrate as a good product among the captured images of the substrate; A step of comparing the first still image and the second still image with a comparison still image to determine whether each of the first still image and the second still image is an image of a good product or an image of a defective product; and A method for manufacturing a display device, comprising: a step of inputting a new photographed image of the substrate into the learning model if the ratio of the first still image and the second still image being images of good products is less than a certain ratio; 13. In paragraph 12, A method for manufacturing a display device, further comprising: a step of comparing the luminance of at least one of the first still image and the second still image with the luminance of the comparison still image.

14. In paragraph 12, A method for manufacturing a display device, wherein the learning model is selected as the final model if the ratio of the first still image and the second still image being images of good products is greater than a certain ratio.

15. In paragraph 14, A method for manufacturing a display device, further comprising: a step of comparing an image of a good product generated from the final model with a photographed image of the substrate to determine whether the substrate is defective.

16. In paragraph 15, A method for manufacturing a display device, further comprising: a step of storing the substrate in a space separated from a space for inspecting the substrate if the substrate is determined to be defective.

17. In paragraph 12, A method for manufacturing a display device in which the above comparison still image is one of a plurality of photographed images of the substrate determined to be a good product among a plurality of photographed images of the substrate.

18. In paragraph 12, A method for manufacturing a display device, wherein at least one of the first still image and the second still image is generated at a constant time interval.

19. In paragraph 12, A method for manufacturing a display device, wherein at least one of the first still image and the second still image is generated according to the height of the substrate when the substrate is raised or lowered.

20. In paragraph 12, A method for manufacturing a display device, wherein the substrate is divided into a plurality of regions, and the first still image and the second still image are generated for each region of the substrate.

Images