Display device, panel joining system including the same, and method of manufacturing display device

Abstract

A display device, a panel bonding system including the same, and a method of manufacturing the display device are provided. The display device includes a display module including a display panel, wherein the display panel includes a display area having a plurality of pixels, an alignment mark area surrounded by the display area, and a display driver driving at least one pixel of the plurality of pixels in the alignment mark area to form an alignment mark, and a stereoscopic lens including a base body disposed on the display module, a plurality of lenses disposed on the base body at a certain angle deviated from one side of the display module, and a mark portion formed on one or more lenses of the plurality of lenses to overlap the alignment mark area.

Description

[0001] This application claims priority to Korean Patent Application No. 10-2020-0075632, filed on June 22, 2020, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference. TECHNICAL FIELD

[0002] The present disclosure relates to a display apparatus and a panel bonding system including the same. More particularly, embodiments of the present disclosure relate to a system for attaching a lenticular lens to a display module. BACKGROUND

[0003] A stereoscopic image display apparatus is classified into a binocular parallax type stereoscopic image display apparatus and a multi-view parallax type stereoscopic image display apparatus. The binocular parallax type stereoscopic image display apparatus can use parallax images for left and right eyes, and can be classified into a glasses type stereoscopic image display apparatus and a glasses-free stereoscopic image display apparatus. The glasses type stereoscopic image display apparatus changes the polarization of left and right parallax images on a direct view display apparatus or a projector and displays the images, and implements a stereoscopic image using polarized glasses, or displays left and right parallax images in a time-division manner and implements a stereoscopic image using shutter glasses. A glasses-free stereoscopic image display apparatus separates the optical axes of left and right parallax images using an optical sheet such as a parallax barrier or a lenticular sheet and generates a stereoscopic image. The manufacturing of a stereoscopic image display apparatus can include a process of attaching a lenticular lens to a display panel. If the lens is misaligned, the stereoscopic image generated by the apparatus can be degraded, or the apparatus can lose reliability. In addition, if a post-application alignment procedure is used, the manufacturing process can take a longer time. SUMMARY

[0004] A system for aligning a lenticular lens with a display panel according to the present disclosure can alleviate problems related to the manufacturing process.

[0005] Such a stereoscopic image display apparatus can be manufactured using a bonding device for bonding a display panel and a lenticular lens.

[0006] According to an embodiment of the present disclosure, a display apparatus includes a display module including a display panel, wherein the display panel includes a display area having a plurality of pixels, an alignment mark area surrounded by the display area, and a display driver that drives at least one pixel of the plurality of pixels in the alignment mark area to form an alignment mark, and a lenticular lens including a base disposed on the display module, a plurality of lenses disposed on the base at an angle offset from an edge of the display module, and a mark portion formed on some of the plurality of lenses to overlap the alignment mark area.

[0007] In an embodiment of the disclosure, the marker portion of the display device includes a marker line disposed in a direction perpendicular to an extension direction of the plurality of lenses, and the marker line includes a material softened by light of a specific wavelength.

[0008] In an embodiment of the disclosure, the marker portion is defined as an area between a plurality of marker lines disposed on at least one lens of the plurality of lenses.

[0009] In an embodiment of the disclosure, one side of the marker portion is parallel or perpendicular to an extension direction of the plurality of lenses.

[0010] In an embodiment of the disclosure, the alignment marker area is disposed at a center of the display panel, and the marker portion is disposed at a center of the stereoscopic lens.

[0011] In an embodiment of the disclosure, the display panel includes a plurality of alignment marker areas spaced apart from each other with respect to a center point of the display panel, and the stereoscopic lens includes a plurality of marker portions spaced apart from each other with respect to a center point of the stereoscopic lens.

[0012] In an embodiment of the disclosure, the display panel includes a plurality of alignment marker areas adjacent to a plurality of corners of the display panel, respectively, and the stereoscopic lens includes a plurality of marker portions adjacent to a plurality of corners of the stereoscopic lens, respectively.

[0013] In an embodiment of the disclosure, the panel bonding system includes a display module including a display panel having a plurality of pixels and a display driver driving some of the plurality of pixels to form an alignment marker, a stereoscopic lens including a base disposed on the display module, a plurality of lenses disposed on the base at an angle deviated from one side of the display module, and a marker portion formed on some of the plurality of lenses to overlap the alignment marker, and a panel bonding apparatus aligning the alignment marker and the marker portion and bonding the display module and the stereoscopic lens.

[0014] In an embodiment of the disclosure, the marker portion includes a marker line disposed in a direction perpendicular to an extension direction of the plurality of lenses, and the marker line includes a material softened by light of a specific wavelength.

[0015] In an embodiment of the disclosure, the marker portion is defined as an area between a plurality of marker lines disposed on at least one lens of the plurality of lenses.

[0016] In an embodiment of the disclosure, one side of the marker portion is parallel or perpendicular to an extension direction of the plurality of lenses.

[0017] In an embodiment of the disclosure, the display panel includes a display area including a plurality of pixels, and an alignment marker area surrounded by the display area and including a group of pixels forming an alignment marker. The group of pixels can be any one or more pixels.

[0018] In embodiments of this disclosure, alignment marks are formed by driving pixels arranged in predetermined rows and pixels arranged in predetermined columns within a set of pixels in the alignment mark region, the predetermined columns intersecting the predetermined rows.

[0019] In embodiments of this disclosure, the plurality of pixels includes a plurality of unit pixels, each of which includes a first sub-pixel to a third sub-pixel, and the alignment mark is formed by illuminating unit pixels arranged in a predetermined row and unit pixels arranged in a predetermined column among a set of pixels in the alignment mark area, the predetermined column intersecting the predetermined row.

[0020] In embodiments of this disclosure, the plurality of pixels includes a plurality of first sub-pixels to third sub-pixels, and alignment marks are formed by illuminating first sub-pixels arranged in a predetermined row and first sub-pixels arranged in a predetermined column among a set of pixels in the alignment mark region, the predetermined column intersecting the predetermined row.

[0021] In embodiments of this disclosure, the panel bonding device includes: a camera unit configured to capture images of alignment marks and alignment of the marking portions to generate image data; an alignment calculation unit configured to calculate horizontal and vertical distances for alignment adjustment based on the image data to generate alignment data; and a bonding unit configured to bond a display module and a stereo lens based on the alignment data.

[0022] In embodiments of this disclosure, the bonding unit includes: an adhesive material supply module for providing an adhesive member between the display module and the stereo lens; a bonding module configured to use the adhesive member to bond the display module and the stereo lens, and to adjust the alignment of the display module and the stereo lens based on alignment data; and a curing module configured to irradiate the adhesive member.

[0023] In embodiments of this disclosure, the curing module softens the marking lines by irradiating them with light.

[0024] In embodiments of this disclosure, the joining unit further includes an adjustment module configured to drive the display module and finely adjust the alignment of the display module and the stereo lens after adjusting the alignment of the display module and the stereo lens via the joining module.

[0025] In embodiments of this disclosure, the adjustment module performs fine adjustments based on the sharpness of light emitted from the display module, wherein the light passes through a stereo lens and reaches a specific field of view. Attached Figure Description

[0026] The above and other aspects and features of the present invention will become more apparent from the detailed description of embodiments of the invention with reference to the accompanying drawings, in which:

[0027] Figure 1This is an exploded perspective view of the display device according to an embodiment;

[0028] Figure 2 This is a plan view showing the display module and stereo lens of the display device according to an embodiment;

[0029] Figure 3 This is a plan view showing the alignment mark area of ​​the display device according to an embodiment;

[0030] Figure 4 This is a view showing an example of alignment marks in a display device according to an embodiment;

[0031] Figure 5 This is a view showing another example of alignment marks in a display device according to an embodiment;

[0032] Figure 6 It is along Figure 2 A cross-sectional view of a stereo lens taken by line I-I';

[0033] Figure 7 This is a block diagram illustrating a panel bonding apparatus according to an embodiment of a panel bonding system;

[0034] Figure 8 This is a view showing the adhesive material supply module of the panel bonding device according to an embodiment;

[0035] Figure 9 This is a view showing the bonding module of the panel bonding device according to an embodiment;

[0036] Figure 10 This is a view showing the alignment of alignment marks and marking portions in a panel joining system according to an embodiment;

[0037] Figure 11 This is a view showing the adjustment module of the panel joining device according to an embodiment;

[0038] Figure 12 This is a view showing the light output of a display module in a panel bonding system according to an embodiment;

[0039] Figure 13 This is a view showing the curing module of the panel bonding apparatus according to an embodiment;

[0040] Figure 14 This is a plan view showing the state in which the marking lines are softened in the panel bonding system according to an embodiment;

[0041] Figure 15 This is a plan view showing the display module and stereo lens of a display device according to another embodiment;

[0042] Figure 16This is a plan view showing the display module and stereo lens of a display device according to another embodiment;

[0043] Figure 17 This is a plan view showing the display module and stereo lens of a display device according to another embodiment;

[0044] Figure 18 This is a plan view showing the display module and stereo lens of a display device according to another embodiment;

[0045] Figure 19 This is a plan view showing the display module and stereo lens of a display device according to another embodiment;

[0046] Figure 20 This is a flowchart illustrating the panel bonding process according to an embodiment; and

[0047] Figure 21 This is a flowchart illustrating a panel bonding process according to another embodiment. Detailed Implementation

[0048] In the following description, numerous specific details are set forth for illustrative purposes to provide a thorough understanding of various embodiments or implementations of the invention. As used herein, “embodiment” and “implementation” are interchangeable terms as non-limiting examples of apparatuses or methods employing one or more of the inventive concepts disclosed herein. However, it will be apparent that various embodiments may be practiced without these specific details or with one or more equivalent arrangements. In other instances, well-known structures and apparatuses are shown in block diagram form to avoid unnecessarily obscuring the various embodiments. Furthermore, the various embodiments may be different, but are not necessarily exclusive. For example, a particular shape, construction, and characteristic of an embodiment may be used or implemented in another embodiment without departing from the inventive concept.

[0049] Unless otherwise stated, the illustrated embodiments are to be understood as example features providing details of variations in some ways in which the inventive concept can be implemented in practice. Therefore, unless otherwise stated, features, components, modules, layers, films, panels, regions and / or aspects, etc. (hereinafter individually or uniformly referred to as “elements”) of various embodiments may be additionally combined, separated, interchanged and / or rearranged without departing from the inventive concept.

[0050] The use of crosshairs and / or shading in accompanying drawings is typically to clarify the boundaries between adjacent elements. Thus, unless otherwise stated, the presence or absence of crosshairs or shading does not convey or indicate any preference or requirement for the specific material, material properties, dimensions, scale, commonalities between the elements shown, or any other characteristics, properties, etc. Furthermore, in the drawings, the dimensions and relative dimensions of elements may be exaggerated for clarity and / or descriptive purposes. When embodiments can be implemented differently, a particular process sequence may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in the reverse order of their description. Moreover, the same reference numerals denote the same elements.

[0051] When a component or layer is referred to as being "on," "connected to," or "bonded to" another component or layer, the component or layer may be directly on, directly connected to, or directly bonded to the other component or layer, or there may be intermediate components or layers present. However, when a component or layer is referred to as being "directly on," "directly connected to," or "directly bonded to" another component or layer, there are no intermediate components or layers present. Therefore, the term "connection" can refer to a physical connection, electrical connection, and / or fluid connection, with or without intermediate components. Furthermore, the X, Y, and Z axes are not limited to the three axes of a Cartesian coordinate system (such as the x, y, and z axes) but can be interpreted in a broader sense. For example, the X, Y, and Z axes can be perpendicular to each other, or they can represent different directions that are not perpendicular to each other. For the purposes of this disclosure, “at least one of X, Y, and Z (species / beings)” and “at least one selected from the group consisting of X, Y, and Z (species / beings)” can be interpreted as only X, only Y, only Z, or any combination of two or more of X, Y, and Z, such as XYZ, XYY, YZ, and ZZ. As used herein, the term “and / or” includes any combination of one or more of the associated listed items.

[0052] Although the terms “first,” “second,” etc., may be used here 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 may be referred to as the second element without departing from the publicly stated teachings.

[0053] For descriptive purposes, spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” “side” (e.g., as in “sidewall”) may be used herein to describe the relationship of one element to other elements as shown in the accompanying drawings. In addition to including the orientations depicted in the drawings, spatial relative terms are also intended to include different orientations of the device during use, operation, and / or manufacture. For example, if the device in the drawings is flipped, an element described as “below” or “under” other elements or features would then be oriented “above” said other elements or features. Thus, the example term “below” can encompass both above and below orientations. Furthermore, the device may be otherwise oriented (e.g., rotated 90 degrees or in other orientations), and thus, the spatial relative descriptive terms used herein shall be interpreted accordingly.

[0054] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a” and “the” as used herein are intended to include the plural forms as well. Furthermore, when the terms “comprising,” “including,” and / or variations thereof are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than as terms of degree, and are thus used to interpret the inherent biases in measurements, calculated values, and / or provided values ​​that will be recognized by those skilled in the art.

[0055] Various embodiments are described herein with reference to sectional views and / or exploded views, which are schematic illustrations of idealized embodiments and / or intermediate structures. Thus, variations in the shapes of the illustrations, for example, due to manufacturing techniques and / or tolerances, will be anticipated. Therefore, the embodiments disclosed herein should not be construed as limited to the shapes of the specifically shown areas, but will include deviations in shape caused, for example, by manufacturing processes. In this way, the areas shown in the drawings can be schematic in nature, and the shapes of these areas may not reflect the actual shapes of the areas of the device, so they are not intended to be limiting.

[0056] As is customary in the art, some embodiments are described and illustrated in the accompanying drawings according to functional blocks, units, and / or modules. Those skilled in the art will understand that these blocks, units, and / or modules are physically implemented by electronic (or optical) circuits (such as logic circuits, discrete components, microprocessors, hardwired circuits, memory elements, wiring connections, etc.) formed using semiconductor-based manufacturing techniques or other manufacturing techniques. In the case where the blocks, units, and / or modules are implemented by microprocessors or other similar hardware, these blocks, units, and / or modules can be programmed and controlled using software (e.g., microcode) to perform the various functions discussed herein, and can optionally be driven by firmware and / or software. It is also noted that each block, unit, and / or module can be implemented by dedicated hardware, or implemented as a combination of dedicated hardware performing some functions and processors performing other functions (e.g., one or more programmed microprocessors and associated circuitry). Furthermore, without departing from the scope of the inventive concept, each block, unit, and / or module of some embodiments can be physically divided into two or more interactive and discrete blocks, units, and / or modules. Furthermore, without departing from the scope of the inventive concept, blocks, units, and / or modules of some embodiments may be physically combined into more complex blocks, units, and / or modules.

[0057] Unless otherwise defined, the terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art. Terms (such as those defined in a general dictionary) shall be interpreted as having the meaning consistent with their meaning in the context of the relevant field, and shall not be interpreted in an idealized or overly formal sense, unless expressly defined herein.

[0058] Figure 1 This is an exploded perspective view of the display device according to an embodiment. Figure 2 This is a plan view showing the display module and stereo lens of the display device according to an embodiment.

[0059] Reference Figure 1 and Figure 2 The display device may include a display module 10 and a stereo lens 20.

[0060] Display devices, as devices for displaying moving or still images, can be used as displays for various products such as televisions, laptops, monitors, billboards, Internet of Things (IoT) devices, and portable electronic devices such as mobile phones, smartphones, tablet PCs, smartwatches, watch phones, mobile communication terminals, e-notebooks, e-book readers, portable multimedia players (PMPs), navigators, and ultra-mobile PCs (UMPCs).

[0061] The display module 10 may include a display panel 110, a display driver 120, and a circuit board 130.

[0062] Display panel 110 may include a light-emitting display panel containing light-emitting elements. For example, display panel 110 may be an organic light-emitting display panel that uses organic light-emitting diodes in an organic light-emitting layer, a microLED display panel that uses microLEDs, a quantum dot light-emitting display panel that uses quantum dot light-emitting diodes including a quantum dot light-emitting layer, or an inorganic light-emitting display panel that uses inorganic light-emitting elements including inorganic semiconductors.

[0063] Display panel 110 may include a display area DA, an alignment mark area MA, and a non-display area NDA. The display area DA may include data lines, scan lines, voltage supply lines, and multiple pixels. For example, scan lines may extend in a first direction (X-axis direction) and may be spaced apart from each other in a second direction (Y-axis direction). Data lines and voltage supply lines may extend in the second direction (Y-axis direction) and may be spaced apart from each other in the first direction (X-axis direction).

[0064] Each pixel may be connected to at least one scan line, at least one data line, and at least one power supply line. Each pixel may include a thin-film transistor, a light-emitting element, and a capacitor, wherein the thin-film transistor includes a driving transistor and at least one switching transistor. Each pixel may receive a data voltage from the data line when a scan signal is applied from the scan line, and may emit light by supplying a driving current to the light-emitting element determined by the data voltage applied to the gate electrode.

[0065] Alignment mark region MA can be disposed in display region DA. Alignment mark region MA can include a group of pixels among a plurality of pixels in display region DA capable of displaying an image. The group of pixels can be any one or more pixels in the display device. In some examples, alignment mark region MA can be disposed at the center of display region DA, but the invention is not limited thereto. Pixels in alignment mark region MA can be driven to form alignment marks during the process of bonding display module 10 with stereo lens 20. For example, the display device can use a group of pixels in display region DA to form alignment marks instead of using alignment marks disposed outside display region DA or unrelated to the displayed image. The display device can change and control the alignment marks by adjusting the drive of the display driver. The display device can use a group of pixels in alignment mark region MA to form alignment marks, thereby reducing the size of the alignment marks. Therefore, the panel bonding system can improve alignment accuracy and reduce alignment time by aligning the alignment marks formed using a group of pixels in display module 10 with the mark portion 230 of stereo lens 20.

[0066] For example, a panel bonding system can reduce panel bonding time and cost by omitting a separate additional adjustment process after the bonding process via alignment. As another example, a panel bonding system can maximize the alignment accuracy between the display module 10 and the stereo lens 20 by performing an alignment process with improved precision and a separate adjustment process.

[0067] The non-display area NDA may surround the display area DA at the edge of the display panel 110. The non-display area NDA may include a scan driver (not shown) that applies scan signals to scan lines and a pad (or "soldering pad") connected to the circuit board 130. For example, the display driver 120 may be disposed on one side of the non-display area NDA, and the pad may be disposed on one edge of the non-display area NDA on which the display driver 120 is disposed.

[0068] The display driver 120 can output signals and voltages for driving the display panel 110. The display driver 120 can supply data voltages to data lines. The display driver 120 can supply power voltages to power supply lines and can supply scan control signals to the scan driver. For example, the display driver 120 is formed as an integrated circuit (IC) and can be disposed in the non-display area NDA of the display panel 110 by means of chip-on-glass (COG), chip-on-plastic (COP), or ultrasonic bonding. In another example, the display driver 120 can be mounted on a circuit board 130 and connected to a pad of the display panel 110.

[0069] An anisotropic conductive film (ACF) can be used to attach the circuit board 130 to the pad of the display panel 110. The leads of the circuit board 130 can be electrically connected to the pad of the display panel 110. The circuit board 130 can be a flexible printed circuit board (FPCB), a printed circuit board (PCB), or a flexible film (such as chip on film (COF)).

[0070] A stereo lens 20 can be disposed on the display module 10. The stereo lens 20 can be attached to a surface of the display module 10 via an adhesive member. The stereo lens 20 can be bonded to the display module 10 via a panel bonding device. For example, the stereo lens 20 can be implemented as a biconvex lens comprising a plurality of lenses 220. As another example, the stereo lens 20 can be implemented as a liquid crystal lens that forms the lens by controlling the liquid crystal in a liquid crystal layer. When the stereo lens 20 is implemented as a biconvex lens, the stereo lens 20 may include a substrate 210, a plurality of lenses 220, and a marking portion 230.

[0071] The substrate 210 can be directly disposed on the upper surface of the display module 10. For example, one surface of the substrate 210 facing the display module 10 and another surface of the substrate 210 facing away from one surface can be parallel to each other. The substrate 210 can output light incident from the display module 10 substantially as is. The direction of light passing through one surface of the substrate 210 can be the same as the direction of light passing through the other surface of the substrate 210. The substrate 210 can be integrally formed with a plurality of lenses 220, but the invention is not limited thereto.

[0072] Multiple lenses 220 can be disposed on the substrate 210 to change the direction of light incident from the display module 10. Light incident from the display module 10 can pass through the substrate 210 to reach the multiple lenses 220. The multiple lenses 220 can be tilted from one side of the display module 10. One side of the display module 10 can extend in the Y-axis direction, and the multiple lenses 220 can extend in the V-axis direction at a predetermined angle from the Y-axis direction. For example, the multiple lenses 220 can be tilted lenses at a predetermined angle relative to one side of the display panel 110. Here, the predetermined angle can be designed to prevent the color band of the display device from being seen by the viewer. The multiple lenses may include a first lens 221, a second lens 222, and a third lens 223.

[0073] Multiple lenses 220 can be integrally formed with the substrate 210. For example, multiple lenses 220 can be formed on the upper surface of the substrate 210 by embossing. Multiple lenses 220 can be semi-cylindrical lenses, but are not limited thereto. As another example, multiple lenses 220 can be implemented as Fresnel lenses. As yet another example, multiple lenses 220 can be manufactured separately from the substrate 210 and then attached to the substrate 210.

[0074] Marking portions 230 may be formed on some of the lenses 220 to overlap with alignment marking regions MA. Marking portions 230 may include marking lines UVS disposed in a direction perpendicular to the extension directions of the lenses 220. Marking portions 230 may be formed by applying multiple marking lines UVS to a second lens 222. The marking lines UVS may have a predetermined color distinguishing them from the lenses 220, but the invention is not limited thereto. One side of the marking portion 230 may be parallel or perpendicular to the extension directions of the lenses 220. For example, the lenses 220 may extend in the V-axis direction, and the marking lines UVS may extend in the W-axis direction perpendicular to the V-axis direction. Marking portions 230 may include multiple marking lines UVS spaced apart from each other, and the marking portion may be defined as the area between the multiple marking lines UVS disposed on at least one of the lenses 220. Therefore, marking portions 230 may correspond to the area surrounded by both sides of at least one lens 220 and multiple marking lines UVS. The shape of the marking portion 230 may be substantially the same as the shape of the alignment marking region MA, but the invention is not limited thereto.

[0075] The marking portion 230 can be disposed at the center of the stereo lens 20. The marking portion 230 can be formed by applying multiple marking lines UVS of a predetermined color to the second lens 222 of the plurality of lenses 220. In this example, the marking portion 230 can be disposed between the first lens 221 and the third lens 223. The marking portion 230 can be superimposed on the alignment mark area MA of the display panel 110. The marking portion 230 can output light incident from the display module 10 substantially as is. The marking portion 230 can have a rectangular shape in a plan view, but its shape is not limited thereto. The marking portion 230 can be formed to correspond to the size of the alignment mark area MA, which includes multiple pixels capable of forming alignment marks. Furthermore, the shape of the marking portion 230 can be changed according to the arrangement of the multiple pixels capable of forming alignment marks.

[0076] The marking line UVS can include a material softened by light of a specific wavelength. The marking line UVS can be a solid with a predetermined color before softening and can immediately become a transparent liquid after softening. The marking line UVS can include a polymer softened by ultraviolet light. For example, the marking line UVS can have a predetermined color in the process of aligning the display module 10 with the stereo lens 20 and can be softened by ultraviolet light capable of curing the adhesive material between the display module 10 and the stereo lens 20. The marking portion 230 can be softened in the process of aligning the display module 10 with the stereo lens 20, thereby having a transparent state without additional processing and without degrading the image quality of the display device.

[0077] For example, the shapes of the alignment mark area MA and the mark portion 230 are not limited to... Figure 2The shapes shown are as follows. The shapes of the alignment mark area MA and the mark part 230 can be changed according to design conditions or needs, but the alignment function can still be used with the changed shapes.

[0078] Figure 3 This is a plan view showing the alignment mark area of ​​the display device according to an embodiment.

[0079] Reference Figure 3 The display area DA of the display panel 110 may include multiple unit pixels UP or multiple sub-pixels SP1, SP2, and SP3. The multiple sub-pixels SP1, SP2, and SP3 may be arranged along multiple rows and columns. As the resolution of the display device increases, the display area DA may include a larger number of unit pixels UP.

[0080] Each of the multiple unit pixels UP may include a first sub-pixel SP1, a second sub-pixel SP2, and a third sub-pixel SP3 representing different colors. The multiple first sub-pixels SP1, second sub-pixels SP2, and third sub-pixels SP3 may be connected to the intersections of n (n is a natural number) data lines and m (m is a natural number) scan lines. Each of the multiple sub-pixels may include a light-emitting element and pixel circuitry. The pixel circuitry may include a driving transistor, at least one switching transistor, and at least one capacitor, and may drive the light-emitting element of each of the multiple sub-pixels.

[0081] Each of the multiple unit pixels UP may include a first sub-pixel SP1, two second sub-pixels SP2, and a third sub-pixel SP3, but the present invention is not limited thereto. Here, the first sub-pixel SP1 may be a red sub-pixel, the second sub-pixel SP2 may be a green sub-pixel, and the third sub-pixel SP3 may be a blue sub-pixel. The size of the opening of each of the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 can be determined according to the brightness of the corresponding light. Therefore, the size of the opening of each of the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 can be adjusted to achieve white light by mixing the light emitted from each of the multiple light-emitting layers. Each of the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 can receive a data signal including grayscale information of red, green, or blue light from the display driver 120 and output light of the corresponding color.

[0082] The alignment mark area MA may include some unit pixels among a plurality of unit pixels in the display area DA. Some unit pixels UP of the alignment mark area MA may be driven by the display driver 120 to form alignment marks. The display driver 120 may supply scan signals and data voltages to the group of unit pixels UP forming the alignment marks in the process of bonding the display module 10 with the stereo lens 20. For example, the alignment mark may have a cross shape, but its shape is not limited to this. The alignment mark may have a shape of a specific graphic or a specific symbol by being driven by the display driver 120. The shape and size of the alignment mark may be changed according to the driving of the display driver 120.

[0083] Figure 4 This is a view showing an example of alignment marks in a display device according to an embodiment.

[0084] Reference Figure 4 The display driver 120 can form an alignment mark AM by driving a first sub-pixel SP1, a second sub-pixel SP2, and a third sub-pixel SP3 arranged in a specific row of the alignment mark area MA, and a first sub-pixel, a second sub-pixel, and a third sub-pixel arranged in a specific column of the alignment mark area MA. For example, the display driver 120 can drive a first sub-pixel SP1 arranged in two rows and two columns intersecting the two rows, drive a second sub-pixel SP2 arranged in two rows and two columns intersecting the two rows, and drive a third sub-pixel SP3 arranged in two rows and two columns intersecting the two rows to form a white alignment mark AM with a cross shape (+). Here, since the first sub-pixel SP1 and the third sub-pixel SP3 can be arranged alternately in the same row and the same column, the display driver 120 can drive a first sub-pixel SP1, a second sub-pixel SP2, and a third sub-pixel SP3 arranged in four rows and four columns to form a white alignment mark AM with a cross shape (+).

[0085] For example, the size of the alignment mark AM can correspond to the size and number of predetermined pixels. As the number of the first sub-pixels SP1, the second sub-pixels SP2, and the third sub-pixels SP3 driven by the display driver 120 decreases, the size of the alignment mark AM can be reduced. The display device can use a set of pixels in the alignment mark area MA to form the alignment mark AM, thereby reducing the size of the alignment mark AM. As the size of the alignment mark AM decreases, the size of the mark portion 230 corresponding to the size of the alignment mark AM can also decrease. As the sizes of the alignment mark AM and the mark portion 230 decrease, alignment accuracy can be improved. Therefore, the panel bonding system can improve alignment accuracy and reduce alignment time by aligning the alignment mark AM formed using a set of pixels in the display module 10 with the mark portion 230 of the stereo lens 20.

[0086] For example, a panel bonding system can reduce panel bonding time and cost by omitting a separate additional adjustment process following the bonding process aided by alignment. As another example, a panel bonding system can maximize the alignment accuracy between the display module 10 and the stereo lens 20 by performing an alignment process with improved precision and a separate adjustment process.

[0087] Figure 5 This is a view showing another example of alignment marks in a display device according to an embodiment.

[0088] Reference Figure 5 The display driver 120 can form an alignment mark AM by driving a specific type of sub-pixel among the first sub-pixel SP1, second sub-pixel SP2, and third sub-pixel SP3 in the alignment mark region MA. For example, the display driver 120 can drive the second sub-pixel SP2 arranged in two rows and two columns intersecting the two rows to form a green alignment mark AM with a cross shape (+). As another example, the display driver 120 can drive the first sub-pixel SP1 arranged in two rows and two columns intersecting the two rows to form a red alignment mark AM with a cross shape (+). As another example, the display driver 120 can drive the third sub-pixel SP3 arranged in two rows and two columns intersecting the two rows to form a blue alignment mark AM with a cross shape (+).

[0089] Therefore, the panel bonding system can improve alignment accuracy by aligning the alignment mark AM formed using a set of pixels in the display module 10 with the mark portion 230 of the stereo lens 20. For example, the panel bonding system can reduce panel bonding time and cost by omitting a separate additional adjustment process after the bonding process aided by alignment. As another example, the panel bonding system can maximize the alignment accuracy between the display module 10 and the stereo lens 20 by performing an alignment process with improved accuracy and a separate adjustment process.

[0090] Figure 6 It is along Figure 2 A cross-sectional view of a stereo lens taken by line I-I'.

[0091] Reference Figure 6 The stereo lens 20 can be disposed on the display module 10. The stereo lens 20 can be attached to a surface of the display module 10 via an adhesive member. The stereo lens 20 can be bonded to the display module 10 via a panel bonding device. For example, the stereo lens 20 can be implemented as a biconvex lens comprising a plurality of lenses 220, but the invention is not limited thereto. The stereo lens 20 may include a substrate 210, a plurality of lenses 220, and a marking portion 230.

[0092] The substrate 210 can be directly disposed on the upper surface of the display module 10. For example, one surface of the substrate 210 facing the display module 10 and another surface of the substrate 210 facing away from one surface can be parallel to each other. The substrate 210 can output light incident from the display module 10 substantially as is. The direction of light passing through one surface of the substrate 210 can be the same as the direction of light passing through the other surface of the substrate 210. The substrate 210 can be integrally formed with a plurality of lenses 220, but the invention is not limited thereto.

[0093] Multiple lenses 220 can be disposed on the substrate 210 to change the direction of light incident from the display module 10. Light incident from the display module 10 can pass through the substrate 210 to reach the multiple lenses 220.

[0094] Multiple lenses 220 may be integrally formed with the substrate 210. For example, multiple lenses 220 may be formed on the upper surface of the substrate 210 by embossing. Multiple lenses 220 may be semi-cylindrical lenses, but are not limited thereto. As another example, multiple lenses 220 may be manufactured separately from the substrate 210 and then attached to the substrate 210.

[0095] Marking portions 230 may be formed on some of the lenses 220 to overlap with alignment marking regions MA. Marking portions 230 may include marking lines UVS disposed in a direction perpendicular to the extending directions of the lenses 220. The marking lines UVS may have a predetermined color distinguishing them from the lenses 220, but the invention is not limited thereto. Marking portions 230 may include multiple marking lines UVS spaced apart from each other, and the marking portion may be defined as the area between the multiple marking lines UVS disposed on at least one of the lenses 220. Therefore, marking portions 230 may correspond to the area surrounded by both sides of at least one lens 220 and the multiple marking lines UVS. The shape of marking portions 230 may be the same as the shape of alignment marking regions MA, but the invention is not limited thereto.

[0096] The marking portion 230 can be formed by applying multiple marking lines UVS of a predetermined color to some of the lenses 220. The marking portion 230 can be superimposed on the alignment marking area MA of the display panel 110. The marking portion 230 can output light incident from the display module 10 substantially as is. The marking portion 230 can have a rectangular shape in a plan view, but its shape is not limited to this. The marking portion 230 can be formed to correspond to the size of the alignment marking area MA, which includes multiple pixels capable of forming alignment marks. Furthermore, the shape of the marking portion 230 can be changed according to the arrangement of the multiple pixels capable of forming alignment marks.

[0097] The marking line UVS can include a material softened by light of a specific wavelength. The marking line UVS can be a solid with a predetermined color before softening and can immediately become a transparent liquid after softening. The marking line UVS can include a polymer softened by ultraviolet light. For example, the marking line UVS can have a predetermined color in the process of aligning the display module 10 with the stereo lens 20 and can be softened by ultraviolet light capable of curing the adhesive material between the display module 10 and the stereo lens 20. The marking portion 230 can be softened in the process of aligning the display module 10 with the stereo lens 20, thereby having a transparent state without additional processing and without degrading the image quality of the display device.

[0098] Figure 7 This is a block diagram illustrating a panel bonding device according to an embodiment of a panel bonding system.

[0099] Reference Figure 7 The panel bonding device 30 may include a camera unit 310, an alignment calculation unit 320, and a bonding unit 330.

[0100] Camera unit 310 can generate image data by capturing the alignment between the marker 230 and the alignment mark AM. Camera unit 310 can be positioned on one side of the joining unit 330. For example, camera unit 310 can capture images of the stereoscopic lens 20 and display module 10 from above the stereoscopic lens 20 before joining the display module 10 with the stereoscopic lens 20. The position of camera unit 310 is not limited to above the stereoscopic lens 20. In some examples, camera unit 310 can be positioned at a location where it can capture images of the marker 230 of the stereoscopic lens 20 and the alignment mark AM of the display module 10. Camera unit 310 can supply image data regarding the alignment process to alignment calculation unit 320.

[0101] The alignment calculation unit 320 can generate alignment data by calculating the horizontal or vertical distance for adjusting alignment based on image data. For example, the alignment calculation unit 320 can calculate the distance between the stereo lens 20 and the display module 10 based on image data received from the camera unit 310. Here, the distance between the stereo lens 20 and the display module 10 can correspond to the distance between the center of the marking section 230 and the center of the alignment mark AM. The alignment calculation unit 320 can supply the alignment data to the joining unit 330, and the joining unit 330 can precisely align the display module 10 and the stereo lens 20 based on the alignment data.

[0102] The bonding unit 330 can move the stereo lens 20 in a first direction (X-axis direction) or a second direction (Y-axis direction) based on alignment data to align the stereo lens 20 with the display module 10. The bonding unit 330 can achieve alignment by attaching the stereo lens 20 to the upper surface of the display module 10 where an adhesive member is provided. The bonding unit 330 can adjust the position of the stereo lens 20 until the position of the alignment mark AM on the display module 10 precisely matches the position of the mark portion 230 on the stereo lens 20.

[0103] For example, the bonding unit 330 may include an adhesive material supply module 400, a bonding module 500, and a curing module 700. In this example, the panel bonding apparatus 30 can bond the display module 10 to the stereo lens 20 by omitting the process of the adjustment module 600. Therefore, the panel bonding system can improve alignment accuracy by aligning alignment marks formed using a set of pixels in the display module 10 with the marking portion 230 of the stereo lens 20. The panel bonding system can reduce panel bonding time and cost by omitting the separate additional adjustment process following the bonding process aided by alignment.

[0104] As another example, the joining unit 330 may also include an adjustment module 600. In this example, the panel joining system can further improve alignment accuracy. Therefore, the panel joining system can maximize alignment accuracy and reduce precise alignment time by effectively using the joining module 500 and the adjustment module 600.

[0105] Refer to respectively Figure 8 , Figure 9 , Figure 11 and Figure 13 The adhesive material supply module 400, the bonding module 500, the adjustment module 600, and the curing module 700 are described in detail.

[0106] Figure 8 This is a view showing the adhesive material supply module of the panel bonding device according to an embodiment.

[0107] Reference Figure 8 In the adhesive material supply module 400, the adhesive component 450 can be attached to a surface of the display module 10. The adhesive material supply module 400 may include an adhesive chamber 410, an adhesive table 420, a moving unit 430, and a guide rail 440.

[0108] The bonding chamber 410 provides space for attaching the adhesive component 450 to the display module 10. The bonding chamber 410 may include an input port 412 and an input door 414. The display module 10 can be disposed inside the bonding chamber 410 via the input port 412. When the display module 10 and the adhesive component 450 are ready, the input door 414 can seal the bonding chamber 410 to provide space for attaching the adhesive component.

[0109] The bonding platform 420 can be disposed inside the bonding chamber 410 on the bottom of the bonding chamber 410. The display module 10 can be disposed on one surface of the bonding platform 420 and supported by the bonding platform 420. The bonding platform 420 can have a fixing part 422 for fixing the display module 10, so that the display module 10 can be kept from moving on the bonding platform 420. In addition, the fixing part 422 can be implemented as an electrostatic chuck using electrostatic force or a porous chuck using vacuum suction force.

[0110] The moving unit 430 can reciprocate above the bonding table 420. While reciprocating along the guide rail 440, the moving unit 430 can attach the adhesive member 450 to an entire surface of the display module 10. The moving unit 430 may include a bobbin 432 and a pressing roller 434. The bobbin 432 rotates due to the movement of the moving unit 430 to supply the wound adhesive member 450 onto the bonding surface of the display module 10 mounted on the bonding table 420. The pressing roller 434 can press the adhesive member 450 supplied to the bonding surface of the display module 10 to attach the adhesive member to the display module 10.

[0111] The winding spool 432 and pressure roller 434 can attach a release member (or peeling member) 460 to another surface of the adhesive member 450, which faces away from the adhesive surface of the adhesive member 450 that faces the display module 10. During the process of attaching one surface of the adhesive member 450 to the adhesive surface of the display module 10, the release member 460 helps maintain the adhesive force of said other surface of the adhesive member 450. The release member 460 can be removed after the adhesive member 450 has been attached to the display module 10, and said other surface of the adhesive member 450 from which the release member 460 has been removed can face the stereoscopic lens 20 in the bonding module 500. In some cases, including a release member in the panel bonding process can provide better final adhesion between the display module and the stereoscopic lens.

[0112] The guide rail 440 provides a path for the moving unit 430 to reciprocate. The guide rail 440 can extend from one side surface of the adhesive chamber 410 to the opposite side surface of the adhesive chamber. The guide rail 440 can be arranged in a straight line so that the moving unit 430 can attach the adhesive member 450 to the display module 10 in a single movement.

[0113] Figure 9 This is a view showing the bonding module of the panel bonding device according to an embodiment. Figure 10 This is a view showing the alignment of alignment marks and marking portions in a panel joining system according to an embodiment.

[0114] Reference Figure 9 and Figure 10 The bonding module 500 can bond a surface of the display module 10, on which the adhesive member 450 is provided, to the stereo lens 20. The bonding module 500 can bond the display module 10 to the stereo lens 20 based on alignment data by aligning the alignment mark AM of the display module 10 with the mark portion 230 of the stereo lens 20.

[0115] The joining module 500 may include a joining chamber 510, an upper platform 520, a lower platform 530, and a lifting unit 540.

[0116] The bonding chamber 510 provides space for bonding the display module 10 to the stereo lens 20. The bonding chamber 510 may include a detachable upper chamber 512 and a detachable lower chamber 514. The upper chamber 512 and lower chamber 514 can be separated before the bonding process, with the display module 10 mounted on the lower stage 530 and the stereo lens 20 mounted on the upper stage 520. The upper chamber 512 and lower chamber 514 can be separated after the bonding process is completed, and the bonded display device can be released.

[0117] The upper platform 520 can move up and down within the upper part of the engagement chamber 510 via the lifting unit 540. The upper platform 520 can be located within the upper part of the upper chamber 512 and can be supported by the lifting unit 540 for vertical movement. The lower surface of the upper platform 520 may include a stereo lens attachment portion 522. For example, the stereo lens attachment portion 522 can be implemented as an electrostatic chuck using electrostatic force or a porous chuck using vacuum suction force.

[0118] The lower stage 530 can be positioned at the lower inner portion of the engagement chamber 510, corresponding to the upper stage 520. The lower stage 530 can be located at the lower inner portion of the lower chamber 514, and its upper surface can include a display module attachment portion 532. For example, the display module attachment portion 532 can be implemented as an electrostatic chuck using electrostatic force or a porous chuck using vacuum suction force.

[0119] The lifting unit 540 can move the upper stage 520 upward from the lower stage 530. The lifting unit 540 can be disposed between the upper chamber 512 and the upper stage 520 to allow the upper stage 520 to move downward toward the lower stage 530. The lifting unit 540 may include a lifting actuator 542, a lifting rod 544, and a bellows 546. The lifting actuator 542 can move up and down to move the upper stage 520 up and down. The lifting rod 544 can connect the lifting actuator 542 and the upper stage 520. The bellows 546 can be disposed on the outer periphery of the lifting rod 544 to maintain a vacuum or pressure difference in the engagement chamber 510 through volume changes.

[0120] For example, lifting unit 540 can be connected to upper platform 520 to move upper platform 520 downward toward lower platform 530. As another example, lifting unit 540 can be connected to lower platform 530 to move lower platform 530 upward toward upper platform 520.

[0121] The assembly module 500 may also include an illumination device 560, an exhaust pipe 570, and a supply pipe 580. The illumination device 560 may provide a light source for allowing the camera unit 310 to capture images of the alignment mark AM of the display module 10 and the marking portion 230 of the stereo lens 20. The lower stage 530 may also include an illumination hole 562 for the illumination device 560.

[0122] The exhaust pipe 570 and supply pipe 580 can create a bonding environment within the bonding space inside the bonding chamber 510. When the display module 10 and the stereo lens 20 are placed into the bonding chamber 510, the exhaust pipe 570 can be connected to a pump (not shown) to convert the bonding space to a vacuum state. When the display module 10 contacts the stereo lens 20, the supply pipe 580 can be connected to a gas supply source (not shown) to receive process gas, and the process gas can pressurize the display module 10 and the stereo lens 20. For example, the process gas can contain nitrogen (N2).

[0123] Figure 11 This is a view showing the adjustment module of the panel joining device according to an embodiment. Figure 12 This is a view showing the light output of a display module in a panel bonding system according to an embodiment.

[0124] Reference Figure 11 and Figure 12 After the alignment of the display module 10 and the stereo lens 20 is adjusted by the coupling module 500, the adjustment module 600 can further adjust the position of the display module 10 to finely adjust the alignment of the display module 10 and the stereo lens 20. For example, the adjustment module 600 can finely adjust the alignment of the display module 10 and the stereo lens 20 until the light output L of the display module 10 that has passed through the stereo lens 20 has a certain characteristic. Figure 12The image shows a clear line shape. When the display module 10 and the stereo lens 20 are misaligned, the light output of the display device may have a blurry or distorted line shape. Therefore, the example of the panel bonding system maximizes the alignment accuracy between the display module 10 and the stereo lens.

[0125] The adjustment module 600 may include an adjustment chamber 610, a window 620, an adjustment platform 630, and a position adjustment unit 640.

[0126] The adjustment chamber 610 provides space for finely adjusting the alignment of the display module 10 and the stereo lens 20. For example, the adjustment chamber 610 is implemented as a detachable upper chamber and a detachable lower chamber, so that the attached display device can be brought in and removed. Here, the display device may include the display module 10 and the stereo lens 20 joined by adhesive members 450. As another example, the window can be detached from the adjustment chamber 610, and therefore the attached display device can be brought in and removed.

[0127] Window 620 can be disposed on a portion of the upper surface of adjustment chamber 610. Window 620 can be disposed between camera unit 310 and the screen of display device to ensure the field of view of camera unit 310. Camera unit 310 can capture the light output L of display device through window 620.

[0128] The adjustment stage 630 can be disposed in the lower part of the adjustment chamber 610 to support the display device. The upper surface of the adjustment stage 630 may include a display device attachment portion 632. For example, the display device attachment portion 632 may be implemented as an electrostatic chuck using electrostatic force or a porous chuck using vacuum suction force.

[0129] The position adjustment unit 640 can precisely move the position of the stereo lens 20 in a first direction (X-axis direction) or a second direction (Y-axis direction). For example, the position adjustment unit 640 can be disposed on one side surface of the adjustment chamber 610 and another side surface of the adjustment chamber 610 parallel to one side surface. As another example, the position adjustment unit 640 can be disposed on all side surfaces of the adjustment chamber 610. The position adjustment unit 640 may include a moving body 642 and a moving rod 644. The moving body 642 can precisely move the position of the stereo lens 20 in a plane. The moving rod 644 can connect the moving body 642 and the stereo lens 20.

[0130] The adjustment module 600 may further include an exhaust pipe 670 and a supply pipe 680. The exhaust pipe 670 and supply pipe 680 can provide an adjustment environment within the space inside the adjustment chamber 610. When the display device is placed in the adjustment chamber 610, the exhaust pipe 670 can be connected to a pump (not shown) to remove gas and / or air from the alignment space. Therefore, the alignment space can be depressurized to a vacuum state. When finely adjusting the alignment of the display device, the supply pipe 680 can be connected to a gas supply source (not shown) to receive process gas, and the process gas can pressurize the display device.

[0131] Figure 13 This is a view showing the curing module of the panel bonding apparatus according to an embodiment. Figure 14 This is a plan view showing the state in which the marker lines are softened in the panel bonding system according to an embodiment.

[0132] Reference Figure 13 and Figure 14 The curing module 700 can cure the adhesive component 450 between the display module 10 and the stereoscopic lens 20. The curing module 700 may include a curing chamber 710, a curing stage 720, and a curing machine 730.

[0133] The curing chamber 710 provides space for curing the bonded component 450. The curing chamber 710 may include an inlet 712 and an inlet door 714. A display device may be disposed inside the curing chamber 710 via the inlet 712. When preparation for curing is complete, the inlet door 714 may seal the curing chamber 710 to provide space for curing the bonded component 450.

[0134] The curing stage 720 may be disposed in the lower part of the curing chamber 710. The display device may be disposed on one surface of the curing stage 720 and supported by the curing stage 720. The curing stage 720 may include a fixing part 722 to hold the display device in a fixed position during the curing process. For example, the fixing part 722 may be implemented as an electrostatic chuck using electrostatic force or a porous chuck using vacuum suction force.

[0135] The curing machine 730 can apply ultraviolet light to the adhesive component 450 of the display device, which is mounted on the curing table 720. The marking lines UVS can be softened by the ultraviolet light from the curing machine 730. Therefore, the curing machine 730 can soften the marking lines UVS while curing the adhesive component 450. The marking lines UVS can be used for alignment of the display module 10 and the stereoscopic lens 20 before the curing process of the adhesive component 450. After the alignment and bonding of the display module 10 and the stereoscopic lens 20 are completed, the marking lines UVS are softened during the curing process of the adhesive component 450, so as... Figure 14The display device exhibits a transparent state without requiring a separate process. Since the marker lines UVS of the display device are softened by light of a specific wavelength and appear substantially transparent, the image quality of the display device is not degraded even when the marker section 230 is placed on the stereo lens 20.

[0136] For example, the curing machine 730 is supported by a separate lifting device (not shown) and can be raised and lowered toward the curing table 720. The distance between the curing machine 730 and the display device can be adjusted by the lifting device (not shown), so the curing machine 730 can adjust the degree of curing of the adhesive component 450.

[0137] Figure 15 This is a plan view showing the display module and stereo lens of a display device according to another embodiment. Figure 15 The display device can be compatible with the shape of the alignment mark area MA and the shape of the mark part 230 in terms of... Figure 2 The display device is different. Structures identical to those described above will be briefly described or omitted.

[0138] Reference Figure 15 The display panel 110 may include a display area DA, an alignment mark area MA, and a non-display area NDA. The alignment mark area MA may be disposed in the display area DA. The planar shape of the alignment mark area MA may correspond to the planar shape of the marking portion 230 of the stereoscopic lens 20.

[0139] A stereo lens 20 may be disposed on the display module 10. In some embodiments, the stereo lens 20 is implemented as a biconvex lens, and the stereo lens 20 may include a substrate 210, a plurality of lenses 220, and a marking portion 230. The plurality of lenses 220 may include a first lens 221 to a fourth lens 224.

[0140] Marking portions 230 may be formed on some of the lenses 220 to overlap with alignment marking areas MA. Marking portions 230 may include marking lines UVS disposed in a direction perpendicular to the extending directions of the lenses 220. Marking portions 230 may be formed by applying multiple marking lines UVS to a second lens 222. Marking portions 230 may include multiple marking lines UVS spaced apart from each other, and the marking portions 230 may be defined as the area between the multiple marking lines UVS disposed on at least one of the lenses 220.

[0141] The marking portion 230 can be formed by applying multiple marking lines UVS of a predetermined color to some of the lenses 220. For example, the multiple marking lines UVS can be applied to the second lens 222 and the third lens 223. In this example, the marking portion 230 can be disposed between the first lens 221 and the fourth lens 224. One side of the marking portion 230 can be parallel to the extending direction or V-axis direction of the multiple lenses 220, and the other side of the marking portion 230 can be perpendicular to the extending direction of the multiple lenses 220, wherein the other side of the marking portion 230 is perpendicular to the first side of the marking portion 230. For example, when the length of one side of the marking portion 230 is different from the length of the other side, the longer side of the marking portion 230 can be parallel to the extending direction of the multiple lenses 220. As another example, when the length of one side of the marking portion 230 is different from the length of the other side, the shorter side of the marking portion 230 can be parallel to the extending direction of the multiple lenses 220.

[0142] Figure 16 This is a plan view showing the display module and stereo lens of a display device according to another embodiment. Figure 16 The display device can be compatible with the shape of the alignment mark area MA and the shape of the mark part 230 in terms of... Figure 2 and Figure 15 The display device is different. Structures identical to those described above will be briefly described or omitted.

[0143] Reference Figure 16 The display panel 110 may include a display area DA, an alignment mark area MA, and a non-display area NDA. The alignment mark area MA may be disposed in the display area DA. The planar shape of the alignment mark area MA may correspond to the planar shape of the marking portion 230 of the stereoscopic lens 20.

[0144] The stereo lens 20 can be disposed on the display module 10. When the stereo lens 20 is implemented as a biconvex lens, the stereo lens 20 may include a base 210, multiple lenses 220, and a marking portion 230. The multiple lenses 220 may include a first lens 221 to a fifth lens 225.

[0145] Marking portions 230 may be formed on some of the lenses 220 to overlap with alignment marking areas MA. Marking portions 230 may include marking lines UVS disposed in a direction perpendicular to the extending directions of the lenses 220. Marking portions 230 may be formed by applying multiple marking lines UVS to a second lens 222. Marking portions 230 may include multiple marking lines UVS spaced apart from each other, and the marking portions 230 may be defined as the area between the multiple marking lines UVS disposed on at least one of the lenses 220.

[0146] The marking portion 230 can be formed by applying multiple marking lines UVS of a predetermined color to some of the lenses 220. For example, the multiple marking lines UVS can be applied to the second lens 222, the third lens 223, and the fourth lens 224. In this example, the marking portion 230 can be disposed between the first lens 221 and the fifth lens 225. One side of the marking portion 230 can be parallel to the extending direction of the multiple lenses 220, and the other side of the marking portion 230 perpendicular to said one side can also be perpendicular to the extending direction of the multiple lenses 220. For example, when the length of one side of the marking portion 230 is different from the length of the other side, the longer side of the marking portion 230 can be parallel to the extending direction of the multiple lenses 220. As another example, when the length of one side of the marking portion 230 is different from the length of the other side, the shorter side of the marking portion 230 can be parallel to the extending direction of the multiple lenses 220.

[0147] Figure 17 This is a plan view showing the display module and stereo lens of a display device according to another embodiment. Figure 16 The display device can be compatible with the shape of the alignment mark area MA and the shape of the mark part 230 in terms of... Figure 2 , Figure 15 and Figure 16 The display device is different. Structures identical to those described above will be briefly described or omitted.

[0148] Reference Figure 17 The display panel 110 may include a display area DA, an alignment mark area MA, and a non-display area NDA. The alignment mark area MA may be disposed in the display area DA. The planar shape of the alignment mark area MA may correspond to the planar shape of the marking portion 230 of the stereoscopic lens 20.

[0149] The stereo lens 20 can be disposed on the display module 10. When the stereo lens 20 is implemented as a biconvex lens, the stereo lens 20 may include a base 210, multiple lenses 220, and a marking portion 230. The multiple lenses 220 may include a first lens 221 to a fifth lens 225.

[0150] Marking portions 230 may be formed on some of the lenses 220 to overlap with alignment marking areas MA. Marking portions 230 may include marking lines UVS disposed in a direction perpendicular to the extending directions of the lenses 220. Marking portions 230 may be formed by applying multiple marking lines UVS to a second lens 222. Marking portions 230 may include multiple marking lines UVS spaced apart from each other, and may be defined as a region between the multiple marking lines UVS disposed on at least one of the lenses 220. For example, marking portions 230 may have a planar cross shape (+).

[0151] The marking portion 230 can be formed by applying multiple marking lines UVS of a predetermined color to some of the lenses 220. The multiple marking lines UVS can be applied to the second lens 222, the third lens 223, and the fourth lens 224. In this case, the marking portion 230 can be disposed between the first lens 221 and the fifth lens 225. For example, the distance between the multiple marking lines UVS on the third lens 223 can be longer than the distance between the multiple marking lines UVS on the second lens 222 or the distance between the multiple marking lines UVS on the fourth lens 224.

[0152] Figure 18 This is a plan view showing the display module and stereo lens of a display device according to another embodiment.

[0153] Reference Figure 19 The display panel 110 may include a display area DA, an alignment mark area MA, and a non-display area NDA. Multiple alignment mark areas MA may be spaced apart from each other about the center point CP of the display panel 110. For example, the multiple alignment mark areas MA may be symmetrical about the center point CP, but the invention is not limited thereto.

[0154] Multiple alignment mark areas MA can each correspond to multiple mark portions 230. For example, the display panel 110 may include a first alignment mark area MA and a second alignment mark area MA, which can be disposed on a line extending in a first direction (X-axis direction) via a center point CP.

[0155] The stereo lens 20 may include a base 210, a plurality of lenses 220, and a plurality of marking portions 230. Each of the plurality of marking portions 230 may have a flat surface surrounded by the plurality of lenses 220. The plurality of marking portions 230 may be symmetrical about a center point CP of the stereo lens 20. For example, the plurality of marking portions 230 may be symmetrical about the center point CP, but the invention is not limited thereto. The plurality of marking portions 230 may each correspond to a plurality of alignment marking regions MA. For example, the stereo lens 20 may include a first marking portion 230 and a second marking portion 230, which may be disposed on a line extending through the center point CP in a first direction (e.g., the x-axis direction).

[0156] The panel bonding device 30 can improve alignment accuracy by aligning the alignment marks AM of the first alignment mark area MA and the second alignment mark area MA of the display module 10 with the first mark portion 230 and the second mark portion 230 of the stereo lens 20, respectively. The display device can reduce the size of the alignment mark AM by forming the alignment mark AM using a set of pixels in the alignment mark area MA. As the size of the alignment mark AM decreases, the size of the mark portion 230 corresponding to the size of the alignment mark AM can also decrease. As the sizes of the alignment mark AM and the mark portion 230 decrease, alignment accuracy can be improved. Therefore, the panel bonding system can improve alignment accuracy and reduce alignment time by aligning the alignment marks AM formed using a set of pixels in the display module 10 with the mark portion 230 of the stereo lens 20.

[0157] For example, a panel bonding system can reduce panel bonding time and cost by omitting a separate additional adjustment process following the alignment bonding process. As another example, a panel bonding system can maximize the alignment accuracy of the display module 10 and the stereo lens 20 by performing an alignment process with improved precision and a separate adjustment process.

[0158] Figure 19 This is a plan view showing the display module and stereo lens of a display device according to another embodiment.

[0159] Reference Figure 20 The display panel 110 may include a display area DA, multiple alignment mark areas MA, and a non-display area NDA. The multiple alignment mark areas MA may be adjacent to multiple corners of the display panel 110. For example, the multiple alignment mark areas MA may be symmetrical about the center point CP, but the invention is not limited thereto. The multiple alignment mark areas MA may correspond to multiple marking portions 230. For example, the display panel 110 may include first alignment mark areas MA to fourth alignment mark areas MA, which may be respectively located at the four corners of the display area DA.

[0160] The stereo lens 20 may include a substrate 210, a plurality of lenses 220, and a plurality of marking portions 230. The plurality of marking portions 230 may be superimposed on a plurality of alignment marking regions MA formed on some of the plurality of lenses 220. The plurality of marking portions 230 may be adjacent to a plurality of corners of the stereo lens 20, respectively. For example, the plurality of marking portions 230 may be symmetrical about a center point CP, but the invention is not limited thereto. The plurality of marking portions 230 may correspond to a plurality of alignment marking regions MA, respectively. For example, the stereo lens 20 may include first marking portions 230 to fourth marking portions 230, which may be respectively disposed at the four corners of the display area DA.

[0161] Therefore, the panel bonding system can improve alignment accuracy and reduce alignment time by aligning the alignment mark AM formed by a set of pixels in the display module 10 with the mark portion 230 of the stereo lens 20.

[0162] Figure 20 This is a flowchart illustrating the panel bonding process according to an embodiment.

[0163] Reference Figure 21 The panel bonding device 30 may include a camera unit 310, an alignment calculation unit 320, and a bonding unit 330. The bonding unit 330 may include an adhesive material supply module 400, a bonding module 500, and a curing module 700.

[0164] The panel bonding system can provide a display module 10 with an alignment mark area MA and a stereo lens 20 with a mark portion 230 (step S110).

[0165] The adhesive material supply module 400 may provide an adhesive member 450 on one surface of the display module 10 (step S120). The adhesive material supply module 400 may attach a release member 460 to a surface of the adhesive member 450 opposite to the adhesive surface of the adhesive member 450 facing the display module 10. In the process of attaching one surface of the adhesive member 450 to the adhesive surface of the display module 10, the release member 460 may help maintain the adhesive force of the other surface of the adhesive member 450.

[0166] In the process of bonding the display module 10 with the stereo lens 20, the display driver 120 can form an alignment mark AM by driving a group of pixels in the alignment mark area MA (step S130).

[0167] The joining module 500 can align the alignment mark AM with the mark portion 230 to join the stereo lens 20 to a surface of the display module 10 provided with the adhesive member 450 (step S140).

[0168] The curing module 700 can cure the adhesive member 450 between the display module 10 and the stereo lens 20, and can remove the marking portion (step S150). The marking line UVS can be softened by the ultraviolet light emitted by the curing module 700. After the alignment and bonding of the display module 10 and the stereo lens 20 are completed, the marking line UVS can be softened during the curing process of the adhesive member 450, thus making the marking line UVS transparent without a separate process. Therefore, since the marking line UVS of the display device is softened by light of a specific wavelength and becomes substantially transparent, the image quality of the display device will not deteriorate even when the marking portion 230 is provided on the stereo lens 20.

[0169] The display device can form alignment marks using a set of pixels in the display area DA, instead of using alignment marks located outside the display area DA or unrelated to the displayed image. The display device can also form alignment marks using a set of pixels in the alignment mark area MA, thereby reducing the size of the alignment marks. Therefore, the panel bonding system can improve alignment accuracy by aligning the alignment marks formed using a set of pixels in the display module 10 with the marking portion 230 of the stereoscopic lens 20. The panel bonding system can reduce panel bonding time and cost by omitting the separate additional adjustment process following the alignment-based bonding process.

[0170] Figure 21 This is a flowchart illustrating a panel bonding process according to another embodiment.

[0171] Reference Figure 12 The panel bonding device 30 may include a camera unit 310, an alignment calculation unit 320, and a bonding unit 330. The bonding unit 330 may include an adhesive material supply module 400, a bonding module 500, an adjustment module 600, and a curing module 700.

[0172] The panel bonding system can provide a display module 10 with an alignment mark area MA and a stereo lens 20 with a mark portion 230 (step S210).

[0173] The adhesive material supply module 400 may provide an adhesive member 450 on one surface of the display module 10 (step S220). The adhesive material supply module 400 may attach a release member 460 to a surface of the adhesive member 450 opposite to the adhesive surface of the adhesive member 450 facing the display module 10. In the process of attaching one surface of the adhesive member 450 to the adhesive surface of the display module 10, the release member 460 may help maintain the adhesive force of the other surface of the adhesive member 450.

[0174] In the process of bonding the display module 10 with the stereo lens 20, the display driver 120 can form an alignment mark AM by driving a group of pixels in the alignment mark area MA (step S230).

[0175] The joining module 500 can align the alignment mark AM and the mark portion 230 to join the stereo lens 20 to a surface of the display module 10 provided with the adhesive member 450 (step S240).

[0176] After the alignment of the display module 10 and the stereo lens 20 is adjusted by the coupling module 500, the adjustment module 600 can finely adjust the alignment of the display module 10 and the stereo lens 20 by driving the display module 10 (step S250). The adjustment module 600 can finely adjust the alignment of the display module 10 and the stereo lens 20 until the light output L of the display module 10 that has passed through the stereo lens 20 has a certain characteristic. ​ The clear line shape is shown in the image.

[0177] The curing module 700 can cure the adhesive component 450 between the display module 10 and the stereo lens 20 (step S260).

[0178] Therefore, the panel bonding system can maximize the alignment accuracy of the display module 10 and the stereo lens 20 by finally checking the light output of the display device.

[0179] According to the display device and panel bonding system including the display device according to the embodiment, in the process of bonding the display module to the stereo lens, the display driver can form alignment marks by driving pixels in the alignment mark region. The display device can reduce the size of the alignment marks by using a set of pixels in the alignment mark region to form the alignment marks. Therefore, the panel bonding system can improve alignment accuracy and reduce alignment time by aligning the alignment marks using a set of pixels in the display module with the marking portion of the stereo lens.

[0180] According to the display device and panel bonding system including the display device according to the embodiment, the marking line can have a predetermined color in the process of aligning the display module and the stereo lens, and can be softened by ultraviolet light that can cure the adhesive material between the display module and the stereo lens. The marking portion can be softened in the process of bonding the display module and the stereo lens, thereby having a transparent state without additional processes, and without degrading the image quality of the display device.

[0181] The effects of the present invention are not limited to the foregoing, and various other effects are contemplated herein.

[0182] Although preferred embodiments of the invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions, and substitutions are possible without departing from the scope and spirit of the disclosure as set forth in the appended claims.

Claims

1. A display device, the display device comprising: A display module includes a display panel and a display driver, wherein the display panel includes: a display area having a plurality of pixels; and an alignment mark area surrounded by the display area, the display driver driving at least one pixel in the alignment mark area of ​​the plurality of pixels to form an alignment mark; and A stereo lens is disposed on the display module. The stereo lens comprises a plurality of lenses arranged along an axis offset from one side of the display module at a certain angle, wherein a marking portion is formed on one or more of the plurality of lenses to overlap with the alignment marking area. The marking portion includes marking lines disposed in a direction perpendicular to the extending direction of the plurality of lenses, and The marking lines comprise a material that appears transparent to light.

2. The display device according to claim 1, in, The light includes ultraviolet light.

3. The display device according to claim 1, in, The marking portion is defined as the area between multiple marking lines disposed on at least one of the plurality of lenses.

4. A panel bonding system, the panel bonding system comprising: A display module includes a display panel and a display driver, the display panel having a plurality of pixels, and the display driver driving one or more of the plurality of pixels to form alignment marks; A stereo lens includes a substrate disposed on the display module, the stereo lens comprising: a plurality of lenses arranged along an axis offset from one side of the display module at a certain angle; and a marking portion formed on one or more of the plurality of lenses to overlap with the alignment mark; and A panel bonding device aligns the alignment marks and the marking portions, and bonds the display module and the stereoscopic lens. The marking portion includes marking lines disposed in a direction perpendicular to the extending direction of the plurality of lenses, and The marking lines comprise a material that appears transparent to light.

5. The panel bonding system according to claim 4, in, The light includes ultraviolet light.

6. The panel bonding system according to claim 4, in, The marking portion is defined as the area between multiple marking lines disposed on at least one of the plurality of lenses.

7. The panel bonding system according to claim 4, in, The display panel includes: The display area includes the plurality of pixels; and The alignment mark area is surrounded by the display area and includes a set of pixels forming the alignment mark.

8. The panel bonding system according to claim 7, in, The alignment mark is formed by driving pixels arranged in a predetermined row and pixels arranged in a predetermined column among the set of pixels in the alignment mark area, the predetermined column intersecting the predetermined row.

9. The panel bonding system according to claim 7, in, The plurality of pixels includes a plurality of unit pixels, and each of the plurality of unit pixels includes a first sub-pixel to a third sub-pixel. The alignment mark is formed by illuminating unit pixels arranged in a predetermined row and unit pixels arranged in a predetermined column among the set of pixels in the alignment mark area, the predetermined column intersecting the predetermined row.

10. A method for manufacturing a display device, the method comprising the following steps: Alignment marks are formed by driving a set of pixels in the alignment mark area of ​​the display panel; A marking portion is formed on a stereo lens, wherein the stereo lens comprises a plurality of lenses arranged along an axis that is offset from one side of the display panel at a certain angle; The display panel and the stereo lens are aligned using the alignment marks and the marking portion; and The display panel is attached to the stereo lens. The marking portion includes marking lines disposed in a direction perpendicular to the extending direction of the plurality of lenses, and The marking lines comprise a material that appears transparent to light.

11. The method according to claim 10, in, The light includes ultraviolet light.

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