Method for manufacturing a display panel attachment device and a display device.

Abstract

This invention relates to an attachment device for a display panel and a method for manufacturing a display device, which can prevent the lower panel cover from lifting at the corners when the lower panel cover is attached to the display panel. [Solution] An attachment device for a display panel according to one embodiment comprises a panel attachment section on which the display panel is placed, a crimping module for applying pressure to a lower panel cover placed on the back surface of the display panel, a module moving means for moving the crimping module up and down, and a moving means control unit for adjusting the length of the module moving means. The crimping module includes a first bracket, a second bracket placed in the central region of the lower surface of the first bracket, and a crimping pad placed between the first bracket and the second bracket.

Description

Technical Field

[0001] The present invention relates to an attaching device for a display panel and a method for manufacturing a display device using the same.

Background Art

[0002] With the development of the information society, the requirements for display devices for displaying images are increasing in various forms. For example, display devices are applied to various electronic devices such as smartphones, digital cameras, notebook computers, navigation devices, and smart TVs.

[0003] Display devices include flat panel display panels such as liquid crystal display panels (LCD panels), field emission display panels (FED panels), and light emitting display panels (LED panels). The light emitting display panel can be an organic light emitting display panel including an organic light emitting diode (OLED), a micro light emitting diode (micro LED) display panel including a micro LED, or an inorganic light emitting display panel using an inorganic light emitting element including an inorganic semiconductor. The light emitting display panel has advantages such as a wide viewing angle, excellent contrast ratio, and fast response speed. In addition, since the light emitting display panel can be bent or warped, the utilization rate of the light emitting display panel in electronic devices is gradually increasing.

[0004] Recently, a four-sided display panel that displays an image on a curved side surface at each of the four edges of the front surface has been studied. In this case, the four-sided display panel includes a corner portion disposed between a first side surface portion that is bent at a first side edge of the front surface portion and a second side surface portion that is bent at a second side edge of the front surface portion. The corner portion has a complex curvature depending on the curvature of the first side surface portion and the curvature of the second side surface portion.

[0005] When attaching the lower panel cover, which protects the back of the display panel, to the back of the four side display panels, the four side display panels and the lower panel cover are completely pressed together due to the curvature of the corners. It may not always attach properly. In this case, the lower panel cover will not be completely attached to the four side display panels at the corners. [Overview of the Initiative] [Problems that the invention aims to solve]

[0006] The problem that this invention aims to solve is to provide an attachment device for a display panel that can prevent the lower panel cover from lifting at the corners when the lower panel cover is attached to the four side display panels.

[0007] Another problem that the present invention aims to solve is to provide a method for manufacturing a display device that can prevent the lower panel cover from lifting at the corners when the lower panel cover is attached to the four side display panels.

[0008] The problems that the present invention addresses are not limited to those mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art from the following description. [Means for solving the problem]

[0009] An attachment device for a display panel according to one embodiment for solving the above problem comprises a panel attachment section on which the display panel is placed, a crimping module for applying pressure to a lower panel cover placed on the back surface of the display panel, a module moving means for moving the crimping module up and down, and a moving means control unit for adjusting the length of the module moving means. The crimping module includes a first bracket, a second bracket placed in the central region of the lower surface of the first bracket, and a crimping pad placed between the first bracket and the second bracket.

[0010] A method for manufacturing a display device according to one embodiment for solving the above-mentioned problems includes the steps of placing a display panel, which includes a front portion, a first side portion extending from the first side of the front portion, a second side portion extending from the second side of the front portion, a third side portion extending from the third side of the front portion, a fourth side portion extending from the fourth side of the front portion, a first corner portion disposed between the first and second side portions, a second corner portion disposed between the second and third side portions, a third corner portion disposed between the third and fourth side portions, and a fourth corner portion disposed between the third and fourth side portions, on a panel mounting portion; attaching a lower panel cover to one surface of the display panel; and applying pressure to the lower panel cover at the first to fourth corner portions of the display panel using a crimping module.

[0011] Specific details of other embodiments are included in the detailed description and drawings. [Effects of the Invention]

[0012] According to the embodiment of the attachment device for display panels and the manufacturing method of the display device, the crimping module includes crimping pads corresponding to the first to fourth side portions and the first to fourth corner portions of the display panel. As a result, by moving the crimping module up and down, the crimping pads of the crimping module can be used to pressurize the lower panel cover at the first to fourth side portions and the first to fourth corner portions of the display panel. Therefore, it is possible to prevent the lower panel cover from not adhering completely to the display panel and floating at the first to fourth corner portions and the first to fourth side portions of the display panel.

[0013] The effects of the embodiments are not limited to those exemplified above, and a wider variety of effects are included herein. [Brief explanation of the drawing]

[0014] [Figure 1] This is a perspective view showing a display panel according to one embodiment. [Figure 2]This is a plan view showing a display panel according to one embodiment. [Figure 3] This is a bottom view showing a display panel and a lower panel cover according to one embodiment. [Figure 4] Figure 3 is a cross-sectional view showing an example of a display panel and lower panel cover cut along line I-I'. [Figure 5] This is a cross-sectional view showing an example of a display panel and lower panel cover cut along line II-II' in Figure 3. [Figure 6] Figure 3 is a cross-sectional view showing yet another example of the display panel and the lower panel cover cut along line I-I'. [Figure 7] This is a cross-sectional view showing yet another example of the display panel and lower panel cover cut along line II-II' in Figure 3. [Figure 8] This is a flowchart showing a method for attaching the display panel and the lower panel cover according to one embodiment. [Figure 9] This is an illustrative diagram showing a first rolling method for attaching the lower panel cover to the front, second, and fourth side portions of the display panel. [Figure 10] This is an illustrative diagram showing a second rolling method for attaching the lower panel cover to the front, first, and third side portions of the display panel. [Figure 11] This is an illustrative diagram showing a corner crimping method for attaching the lower panel cover to the first to fourth corners of the display panel. [Figure 12] This is a flowchart showing a method for attaching the display panel and the lower panel cover according to another embodiment. [Figure 13] This is an example diagram showing a rolling method for attaching the front part of a display panel. [Figure 14] This is an illustrative drawing showing a first-side pressing method for attaching the panel's lower cover to the first and third side surfaces of the display panel. [Figure 15] This is an illustrative drawing showing a first-side pressing method for attaching the panel's lower cover to the first and third side surfaces of the display panel. [Figure 16]It is an exemplary drawing showing a second side surface crimping method for attaching a panel lower cover to the second side surface portion and the fourth side surface portion of a display panel. [Figure 17] It is an exemplary drawing showing a second side surface crimping method for attaching a panel lower cover to the second side surface portion and the fourth side surface portion of a display panel. [Figure 18] It is an exemplary drawing showing a corner crimping method for attaching a panel lower cover to the first corner portion to the fourth corner portion of a display panel. [Figure 19] It is a perspective view showing an attaching device for a display panel according to an embodiment. [Figure 20] It is an exploded perspective view showing the crimping module of FIG. 19 in detail. [Figure 21] It is a plan view showing an example of the crimping pad of FIG. 20. [Figure 22] It is a plan view showing another example of the crimping pad of FIG. 20. [Figure 23] It is a plan view showing another example of the crimping pad of FIG. 20. [Figure 24] It is a plan view showing an example of the crimping pad of FIG. 20 in detail. [Figure 25] It is a bottom view showing an example of the crimping pad of FIG. 20 in detail. [Figure 26] It is a cross-sectional view showing an example of the crimping pad cut along V-V' of FIGS. 24 and 25. [Figure 27] It is a cross-sectional view showing an example of the crimping pad cut along VI-VI' of FIGS. 24 and 25. [Figure 28] It is a cross-sectional view showing an example of the crimping pad cut along VII-VII' of FIGS. 24 and 25. [Figure 29] It is a cross-sectional view showing an example of the attaching device for a display panel cut along VIII-VIII' of FIG. 19. [Figure 30] It is a cross-sectional view showing an example of the attaching device for a display panel cut along IX-IX' of FIG. 19. [Figure 31] It is an enlarged cross-sectional view showing an example of the A region of FIG. 29. [Figure 32] It is an enlarged cross-sectional view showing another example of the A region of FIG. 29. [Figure 33] This is an enlarged cross-sectional view showing yet another example of area A in Figure 29. [Figure 34] This is a cross-sectional view showing an example of an attachment device for a display panel, cut along line VIII-VIII' in Figure 19. [Figure 35] This is a cross-sectional view showing an example of a display panel attachment device cut along line IX-IX' in Figure 19. [Modes for carrying out the invention]

[0015] The advantages and features of the present invention, as well as methods for achieving them, will become clearer with reference to the embodiments described in detail below, along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and can be realized in a variety of different forms, and these embodiments are provided merely to complete the disclosure of the present invention and to fully inform those who are ordinary skill in the art to which the invention pertains, of the scope of the invention, and the present invention is defined solely by the scope of the claims.

[0016] When elements or layers are referred to as "on" other elements or layers, this includes all cases where other layers or elements are interposed immediately above or between other elements. Throughout the specification, the same reference numerals refer to the same component. The shapes, sizes, proportions, angles, numbers, etc. disclosed in the drawings illustrating embodiments are illustrative and the invention is not limited to what is shown.

[0017] While terms like "first," "second," etc., are used to describe various components, these components are not limited by these terms. These terms are simply used to distinguish one component from others. Therefore, the first component mentioned below could, of course, be the second component within the technical concept of this invention.

[0018] The features of each of the various embodiments of the present invention can be combined or linked together in part or in whole, enabling a wide range of technical interdependencies and drives, and each embodiment can be implemented independently of the others, or related ones can be implemented together.

[0019] The following describes specific embodiments with reference to the attached drawings.

[0020] Figure 1 is a perspective view showing a display panel according to one embodiment. Figure 2 is a plan view showing a display panel according to one embodiment.

[0021] Referring to Figures 1 and 2, the display device 10 according to one embodiment can be applied to portable electronic devices such as mobile phones, smartphones, tablet PCs, mobile communication terminals, electronic organizers, e-books, PMPs (portable multimedia players), navigation systems, and UMPCs (Ultra Mobile PCs). Alternatively, the display device 10 according to one embodiment can be applied to televisions, notebooks, monitors, billboards, or displays for the Internet of Things (IoT). Alternatively, the display device 10 according to one embodiment can be applied to wearable devices such as smartwatches, watch phones, glasses-type displays, and head-mounted displays (HMDs). Alternatively, the display device 10 according to one embodiment can be applied to automobile instrument panels, automobile center fascias, CIDs (Center Information Displays) located on automobile dashboards, and rearview mirror displays (room mirrors) that replace automobile side mirrors. It can be applied to rear displays, or displays positioned on the back of the front seats as rear-seat entertainment in a car.

[0022] According to one embodiment, the display device 10 includes a display panel 300 and a lower panel cover (400 in Figure 3).

[0023] In this specification, the first direction DR1 is the direction of the short side of the display panel 300, which may be, for example, the lateral direction of the display panel 300. The second direction DR2 is the direction of the long side of the display panel 300, which may be, for example, the vertical direction of the display panel 300. The third direction DR3 may be the thickness direction of the display panel 300.

[0024] The display panel 300 may be a light-emitting display panel that includes a light-emitting element. For example, the display panel 300 may be an organic light-emitting display panel that uses an organic light-emitting diode that includes an organic light-emitting layer, a micro LED display panel that uses a micro LED, or an inorganic light-emitting display panel that uses an inorganic light-emitting element that includes an inorganic semiconductor.

[0025] The display panel 300 may be a four-sided display panel including a front section FS, a first side section SS1, a second side section SS2, a third side section SS3, a fourth side section SS4, a first corner section CS1, a second corner section CS2, a third corner section CS3, and a fourth corner section CS4.

[0026] The front section FS has a quadrilateral planar shape with a short side in the first direction DR1 and a long side in the second direction DR2, but is not limited thereto. The front section FS may have other polygonal, circular, or elliptical planar shapes. The corners of the front section FS where the short side in the first direction DR1 and the long side in the second direction DR2 meet are formed rounded or at right angles with a predetermined curvature. The front section FS may be formed flat or include curved surfaces.

[0027] The first side section SS1 extends from the first side of the front section FS. The first side section SS1 is bent along the first bending line BL1 on the first side of the front section FS and has a predetermined curvature. The angle of the bend of the first side section SS1 relative to the front section FS may be 90 degrees or less. The first side of the front section FS may be the left side of the front section FS.

[0028] The second side section SS2 extends from the second side of the front section FS. The second side section SS2 bends along the second bending line BL2 on the second side of the front section FS and has a predetermined curvature. The curvature of the second side section SS2 may be substantially the same as or different from the curvature of the first side section SS1. The angle at which the second side section SS2 is bent relative to the front section FS may be 90 degrees or less. The second side of the front section FS may be the right side of the front section FS.

[0029] The third side section SS3 extends from the third side of the front section FS. The third side section SS3 bends along the third bending line BL3 on the third side of the front section FS and has a predetermined curvature. The angle of the bend of the third side section SS3 relative to the front section FS may be 90 degrees or less. The third side of the front section FS may be the underside of the front section FS.

[0030] The fourth side section SS4 extends from the fourth side of the front section FS. The fourth side section SS4 bends along the fourth bending line BL4 on the fourth side of the front section FS and has a predetermined curvature. The curvature of the fourth side section SS4 may be substantially the same as or different from the curvature of the third side section SS3. The angle at which the fourth side section SS4 is bent relative to the front section FS may be 90 degrees or less. The fourth side of the front section FS may be the upper side of the front section FS.

[0031] The first corner section CS1 is located between the first side section SS1 and the second side section SS2. The first corner section CS1 is defined by a corner region that curves along the first bending line BL1 and the second bending line BL2. As a result, the first corner section CS1 has a double curvature due to the curvature of the first side section SS1 and the curvature of the second side section SS2.

[0032] The second corner section CS2 is located between the second side section SS2 and the third side section SS3. The second corner section CS2 is defined by a corner region that bends along the second bending line BL2 and the third bending line BL3. As a result, the second corner section CS2 has a double curvature due to the curvature of the second side section SS2 and the curvature of the third side section SS3.

[0033] The third corner section CS3 is located between the third side section SS3 and the fourth side section SS4. The third corner section CS3 is defined by a corner region that curves along the third bending line BL3 and the fourth bending line BL4. As a result, the third corner section CS3 has a double curvature due to the curvature of the third side section SS3 and the curvature of the fourth side section SS4.

[0034] The fourth corner section CS4 is located between the first side section SS1 and the fourth side section SS4. The fourth corner section CS4 is defined by a corner region that curves along the first bending line BL1 and the fourth bending line BL4. As a result, the fourth corner section CS4 has a double curvature due to the curvature of the first side section SS1 and the curvature of the fourth side section SS4.

[0035] The first through-hole TH1 and the second through-hole TH2 are located on the front surface FS. Each of the first through-hole TH1 and the second through-hole TH2 may be a hole that penetrates the display panel 300. Figures 1 and 2 illustrate that the first through-hole TH1 and the second through-hole TH2 have a circular planar shape, but are not limited to this. The first through-hole TH1 and the second through-hole TH2 may have a polygonal, elliptical, or non-standard planar shape.

[0036] As shown in Figures 1 and 2, the display panel 300 includes a front section FS, side sections SS1, SS2, SS3, SS4, and corner sections CS1, CS2, CS3, CS4. Therefore, the user can view the images displayed not only on the front section FS of the display panel 300, but also on the side sections SS1, SS2, SS3, SS4 and the corner sections CS1, CS2, CS3, CS4.

[0037] Figure 3 is a bottom view showing a display panel and lower panel cover according to one embodiment. Figure 4 is a cross-sectional view showing an example of a display panel and lower panel cover cut along line I-I' in Figure 3. Figure 5 is a cross-sectional view showing an example of a display panel and lower panel cover cut along line II-II' in Figure 3.

[0038] Referring to Figures 3 to 5, the angles θ1 between the front portion FS and the first side portion SS1 of the display panel 300, θ2 between the front portion FS and the second side portion SS2, θ3 between the front portion FS and the third side portion SS3, and θ4 between the front portion FS and the fourth side portion SS4 can be 90 degrees or less. In other words, the first side portion SS1, the second side portion SS2, the third side portion SS3, and the fourth side portion SS4 can each be bent to an angle of 90 degrees or less with respect to the front portion FS.

[0039] The lower panel cover 400 is positioned on the back of the display panel 300. Figures 4 and 5 illustrate that the end of the lower panel cover 400 coincides with the end of the display panel 300, but the embodiments herein are not limited thereto. The lengths of the lower panel cover 400 in the first direction DR1 and the second direction DR2 may be shorter than the lengths of the display panel 300 in the first direction DR1 and the second direction DR2. This ensures that the back edge of the display panel 300 is not covered by the lower panel cover 400.

[0040] The lower panel cover 400 is attached to the back of the display panel 300 by an adhesive. The adhesive may be a pressure-sensitive adhesive (PSA). The lower panel cover 400 does not overlap with the first through-hole TH1 and the second through-hole TH2 of the display panel 300. Therefore, the first through-hole TH1 and the second through-hole TH2 of the display panel 300 are not covered by the lower panel cover 400 and are exposed.

[0041] The lower panel cover 400 may include at least one of the following: a light-absorbing member for absorbing light incident from the outside, a buffer member for absorbing external shocks, and a heat-dissipating member for efficiently releasing heat from the display panel 300.

[0042] The light-absorbing member is positioned on the back of the display panel 300. The light-absorbing member prevents light transmission, thus preventing a circuit board or other component positioned on the back of the light-absorbing member, such as one connected to the second side surface SS2 of the display panel 300, from being visible from the top of the display panel 300. The light-absorbing member may contain a light-absorbing substance such as a black pigment or black dye.

[0043] The cushioning member is positioned on the back surface of the light-absorbing member. The cushioning member can absorb external impacts and prevent damage to the display panel 300. The cushioning member consists of one or more layers. For example, the cushioning member may be made of a polymer resin such as polyurethane, polycarbonate, polypropylene, or polyethylene, or it may contain an elastic material such as a foamed sponge made from rubber, a urethane-based material, or an acrylic-based material.

[0044] The heat dissipation member is positioned on the back surface of the buffer member. The heat dissipation member may include a first heat dissipation layer containing graphite or carbon nanotubes, and a second heat dissipation layer formed of a metal foil film such as copper, nickel, ferrite, or silver, which can shield electromagnetic waves and has excellent thermal conductivity.

[0045] Figure 6 is a cross-sectional view showing yet another example of the display panel and lower panel cover cut along line I-I' in Figure 3. Figure 7 is a cross-sectional view showing yet another example of the display panel and lower panel cover cut along line II-II' in Figure 3.

[0046] Figures 6 and 7 differ from the embodiments in Figures 4 and 5 in that the angles θ1 between the front part FS and the first side part SS1, θ2 between the front part FS and the second side part SS2, θ3 between the front part FS and the third side part SS3, and θ4 between the front part FS and the fourth side part SS4 of the display panel 300 are all 90 degrees. Figures 6 and 7 will be explained focusing on the differences from the embodiments in Figures 4 and 5.

[0047] Referring to Figures 6 and 7, the first side section SS1, the second side section SS2, the third side section SS3, and the fourth side section SS4 can each be bent at a 90-degree angle to the front section FS.

[0048] The first side portion SS1 may include a first curved portion SSC1 extending from the first side of the front portion FS and a first flat portion SSP1 extending from the first curved portion SSC1. The first curved portion SSC1 has a first curvature, and the first flat portion SSP1 is formed flat.

[0049] The second side portion SS2 may include a second curved portion SSC2 extending from the second side of the front portion FS and a second flat portion SSP2 extending from the second curved portion SSC2. The second curved portion SSC2 has a second curvature, and the second flat portion SSP2 is formed flat.

[0050] The third side section SS3 consists of a third curved section SSC3 and a third curved section S extending from the third side of the front section FS. It may include a third planar portion SSP3 extending from SC3. The third curved portion SSC3 has a third curvature, and the third planar portion SSP3 is formed flat.

[0051] The fourth side portion SS4 may include a fourth curved portion SSC4 extending from the fourth side of the front portion FS and a fourth flat portion SSP4 extending from the fourth curved portion SSC4. The fourth curved portion SSC4 has a fourth curvature, and the fourth flat portion SSP4 is formed flat.

[0052] As shown in Figures 6 and 7, if the first side section SS1, the second side section SS2, the third side section SS3, and the fourth side section SS4 are each bent at a 90-degree angle with respect to the front section FS, the user can view the images displayed on the side sections SS1, SS2, SS3, and SS4 of the display panel 300 even when positioned on the side sections SS1, SS2, SS3, and SS4 of the display panel 300.

[0053] Figure 8 is a flowchart showing a method for attaching a display panel and a lower panel cover according to one embodiment. Figure 9 is an illustrative diagram showing a first rolling method for attaching the lower panel cover to the front, second, and fourth sides of the display panel. Figure 10 is an illustrative diagram showing a second rolling method for attaching the lower panel cover to the front, first, and third sides of the display panel. Figure 11 is an illustrative diagram showing a corner crimping method for attaching the lower panel cover to the first to fourth corners of the display panel.

[0054] The methods for attaching the display panel 300 and the lower panel cover 400 shown in Figures 8 to 11 illustrate the case where the first side portion SS1, the second side portion SS2, the third side portion SS3, and the fourth side portion SS4 are each bent at an angle of 90 degrees or less with respect to the front portion FS, but the embodiments specified herein are not limited thereto. For example, the methods for attaching the display panel 300 and the lower panel cover 400 shown in Figures 8 to 11 can also be applied when the first side portion SS1, the second side portion SS2, the third side portion SS3, and the fourth side portion SS4 are each bent at an angle of 90 degrees or more with respect to the front portion FS.

[0055] Firstly, as shown in Figure 9, the display panel 300 is placed on the panel mounting portion (1500 in Figure 19) (S110 in Figure 8).

[0056] The front surface of the display panel 300 faces the upper surface of the panel mounting portion (1500 in Figure 19). The panel mounting portion (1500 in Figure 19) supports the display panel 300 to prevent damage when the back surface of the display panel 300 is pressed by rollers, a crimping module, etc. For this purpose, the front surface of the panel mounting portion (1500 in Figure 19) can have substantially the same engraved shape as the front surface of the display panel 300.

[0057] Secondly, the lower panel cover 400 is attached to the back of the display panel 300 as shown in Figure 9 (S120 in Figure 8).

[0058] Thirdly, as shown in Figure 9, a lamination process is performed in which the lower panel cover 400 is pressurized using the first roller R1 on the front FS, second side SS2, and fourth side SS4 of the display panel 300 (S130 in Figure 8).

[0059] The first roller R1 extends in the first direction DR1 and rolls in the second direction DR2. The first roller R1 pressurizes the lower panel cover 400 as it rolls from the fourth side portion SS4 of the display panel 300, through the front portion FS, to the second side portion SS2. Alternatively, the first roller R1 pressurizes the lower panel cover 400 as it rolls from the front portion FS of the display panel 300 to the second side portion SS2, and then pressurizes the lower panel cover 400 as it rolls from the front portion FS of the display panel 300 to the fourth side portion SS4.

[0060] Fourth, as shown in Figure 10, a lamination process is performed in which the lower panel cover 400 is pressurized using the second roller R2 on the front portion FS, the first side portion SS1, and the third side portion SS3 of the display panel 300 (S140 in Figure 8).

[0061] The second roller R2 extends in the second direction DR2 and rolls in the first direction DR1. Since the length of the front part FS of the display panel 300 in the second direction DR2 is longer than the length of the first direction DR1, the length of the second roller R2 is longer than the length of the first roller R1. The second roller R2 pressurizes the lower panel cover 400 as it rolls from the first side part SS1 of the display panel 300 through the front part FS to the third side part SS3. Alternatively, the second roller R2 pressurizes the lower panel member 400 as it rolls from the front part FS of the display panel 300 to the first side part SS1, and then pressurizes the lower panel member 400 as it rolls from the front part FS of the display panel 300 to the third side part SS3.

[0062] Fifth, as shown in Figure 11, the lower panel cover 400 is pressed at the first to fourth corners CS1, CS2, CS3, and CS4 of the display panel 300 using the crimping pad 1130 of the crimping module (510 in Figure 17) (S150 in Figure 8).

[0063] The crimping pad 1130 can have a planar shape with a square frame. The crimping pad 1130 can move up and down in the third direction DR3. The crimping pad 1130 can move downward and press the lower panel cover 400 at the first to fourth corners CS1, CS2, CS3, CS4 of the display panel 300. At this time, since the crimping pad 1130 has a planar shape with a square frame, it can press the lower panel cover 400 not only at the first to fourth corners CS1, CS2, CS3, CS4 of the display panel 300, but also at the first to fourth side surfaces SS1, SS2, SS3, SS4. Meanwhile, a detailed explanation of the crimping module (510 in Figure 17) including the crimping pad 1130 will be given later in relation to Figure 17.

[0064] As shown in Figures 8 to 11, if the display panel 300 is a four-sided display panel including a front section FS, first to fourth side sections SS1, SS2, SS3, SS4, and first to fourth corner sections CS1, CS2, CS3, CS4, then by using a pressure pad 1130 having a planar shape of a square frame, the lower panel cover 400 can be pressed at the first to fourth corner sections CS1, CS2, CS3, CS4. Therefore, the lower panel cover 400 can be prevented from lifting at the first to fourth corner sections CS1, CS2, CS3, CS4 of the display panel 300.

[0065] Figure 12 is a flowchart showing a method for attaching the display panel and the lower panel cover according to another embodiment. Figure 13 is an illustrative diagram showing a rolling method for attaching the front portion of the display panel. Figures 14 and 15 are illustrative diagrams showing a first side-pressing method for attaching the lower panel cover to the first and third side portions of the display panel. Figures 16 and 17 are illustrative diagrams showing a second side-pressing method for attaching the lower panel cover to the second and fourth side portions of the display panel. Figure 18 is an illustrative diagram showing a corner-pressing method for attaching the lower panel cover to the first to fourth corner portions of the display panel.

[0066] The methods for attaching the display panel 300 and the lower panel cover 400 shown in Figures 12 to 18 exemplify the case where the first side portion SS1, the second side portion SS2, the third side portion SS3, and the fourth side portion SS4 are each bent at an angle of 90 degrees relative to the front portion FS, but the embodiments specified herein are not limited to this. For example, the methods for attaching the display panel 300 and the lower panel cover 400 shown in Figures 12 to 18 can also be applied when the first side portion SS1, the second side portion SS2, the third side portion SS3, and the fourth side portion SS4 are each bent at an angle lower than 90 degrees or greater than 90 degrees relative to the front portion FS.

[0067] Since the S210 and S220 stages in Figure 12 are substantially the same as those explained in the S110 and S120 stages in Figure 8, the explanation for the S210 and S220 stages will be omitted.

[0068] As shown in Figure 13, a lamination process is performed in which the lower panel cover 400 is pressed at the front part FS of the display panel 300 using a roller R (S230 in Figure 12).

[0069] While it has been illustrated that the roller R extends in the first direction DR1 and rolls in the second direction DR2, it is not limited to this configuration. The roller R may also extend in the second direction DR2 and roll in the first direction DR1.

[0070] Then, as shown in Figures 14 and 15, the lower panel cover 400 is pressurized using the first side crimping module SPM1 and the second side crimping module SPM2 on the first flat surface SSP1 of the first side surface SS1 and the third flat surface SSP3 of the third side surface SS3 of the display panel 300 (S240 in Figure 12).

[0071] Figure 15 shows a cross-sectional view of the display panel 300 and the lower panel cover 400, cut along line III-III' in Figure 14.

[0072] Referring to Figures 14 and 15, the first side crimping module SPM1 and the second side crimping module SPM2 are movable in the first direction DR1. The first side crimping module SPM1 may include a first side crimping pad SPP1 facing the first planar portion SSP1 of the first side portion SS1 of the display panel 300. The second side crimping module SPM2 may include a second side crimping pad SPP2 facing the third planar portion SSP3 of the third side portion SS3 of the display panel 300.

[0073] The first side crimping module SPM1 moves in the first direction DR1 on the front surface FS of the display panel 300, thereby pressing the lower panel cover 400 on the first planar surface SSP1 of the first side surface SS1 using the first side crimping pad SPP1. The second side crimping module SPM2 moves in the first direction DR1 on the front surface FS of the display panel 300, thereby pressing the lower panel cover 400 on the third planar surface SSP3 of the third side surface SS3 using the second side crimping pad SPP2. At this time, if the direction of movement of the first side crimping module SPM1 is the positive direction of the first direction DR1, the direction of movement of the second side crimping module SPM2 may be the opposite direction of the first direction DR1. That is, the direction of movement of the first side crimping module SPM1 and the direction of movement of the second side crimping module SPM2 are opposite to each other.

[0074] Then, as shown in Figures 16 and 17, the lower panel cover 400 is pressed using the side crimping module SPM at the second flat surface SSP2 of the second side surface SS2 and the fourth flat surface SSP4 of the fourth side surface SS4 of the display panel 300 (S250 in Figure 12).

[0075] Figure 17 shows a cross-sectional view of the display panel 300 and the lower panel cover 400, cut along line IV-IV' in Figure 16.

[0076] Referring to Figures 16 and 17, the third side crimping module SPM3 and the fourth side crimping module SPM4 are movable in the second direction DR2. The third side crimping module SPM3 may include a third side crimping pad SPP3 facing the second planar portion SSP2 of the second side portion SS2 of the display panel 300. The fourth side crimping module SPM4 may include a fourth side crimping pad SPP4 facing the fourth planar portion SSP4 of the fourth side portion SS4 of the display panel 300.

[0077] The third side crimping module SPM3 moves in the second direction DR2 on the front part FS of the display panel 300, thereby using the third side crimping pad SPP3 to crimp the second side part SS2. The lower panel cover 400 can be pressed by the flat surface SSP2. The fourth side crimping module SPM4 moves in the second direction DR2 on the front surface FS of the display panel 300, thereby pressing the lower panel cover 400 with the fourth flat surface SSP4 of the fourth side surface SS4 using the fourth side crimping pad SPP4. At this time, if the direction of movement of the third side crimping module SPM3 is the positive direction of the second direction DR2, the direction of movement of the fourth side crimping module SPM4 may be the opposite direction of the second direction DR2. That is, the direction of movement of the third side crimping module SPM3 and the direction of movement of the fourth side crimping module SPM4 are opposite to each other.

[0078] Then, as shown in Figure 18, the lower panel cover 400 is pressed using the crimping pads 1130 of the crimping module at the first to fourth corner portions CS1, CS2, CS3, CS4 of the display panel 300 and the first to fourth curved portions SSC1, SSC2, SSC3, SSC4 of the first to fourth side portions SS1, SS2, SS3, SS4 (S260 in Figure 12).

[0079] The crimping pad 1130 can have a planar shape with a square frame. The crimping pad 1130 can move up and down in a third direction DR3. The crimping pad 1130 can move downward and press the lower panel cover 400 at the first to fourth corners CS1, CS2, CS3, CS4 of the display panel 300. At this time, since the crimping pad 1130 has a planar shape with a square frame, it can press the lower panel cover 400 not only at the first to fourth corners CS1, CS2, CS3, CS4 of the display panel 300, but also at the first to fourth curved surfaces SSC1, SSC2, SSC3, SSC4 of the first to fourth side surfaces SS1, SS2, SS3, SS4.

[0080] As shown in Figures 12 to 18, if the display panel 300 is a four-sided display panel including a front section FS, first to fourth side sections SS1, SS2, SS3, SS4, and first to fourth corner sections CS1, CS2, CS3, CS4, then by using a pressure pad 1130 having a planar shape of a square frame, the lower panel cover 400 can be pressed at the first to fourth corner sections CS1, CS2, CS3, CS4. Therefore, the lower panel cover 400 can be prevented from lifting at the first to fourth corner sections CS1, CS2, CS3, CS4 of the display panel 300.

[0081] Furthermore, if the first side section SS1, the second side section SS2, the third side section SS3, and the fourth side section SS4 are each bent at a 90-degree angle with respect to the front section FS, then the first side section SS1 includes the first curved section SSC1 and the first flat section SSP1, the second side section SS2 includes the second curved section SSC2 and the second flat section SSP2, the third side section SS3 includes the third curved section SSC3 and the third flat section SSP3, and the fourth side section SS4 includes the fourth curved section SSC4 and the fourth flat section SSP4. At this time, it is difficult to apply pressure to the lower panel cover 400 at the first curved section SSC1, the second curved section SSC2, the third curved section SSC3, and the fourth curved section SSC4 using the roller R and the side crimping module SPM. However, by using the crimping pad 1130 which has a planar shape of a square frame, it is possible to apply pressure to the lower panel cover 400 at the first curved section SSC1, the second curved section SSC2, the third curved section SSC3, and the fourth curved section SSC4. Therefore, it is possible to prevent the lower panel cover 400 from floating at the first to fourth curved sections SSC1, SSC2, SSC3, and SSC4 of the display panel 300.

[0082] Figure 19 is a perspective view showing an attachment device for a display panel according to one embodiment. Figure 20 is an exploded perspective view showing the crimping module of Figure 19 in detail.

[0083] Referring to Figures 19 and 20, an attachment device 1000 for a display panel according to one embodiment includes a crimping module 1100, a module fixing part 1200, a module moving means 1300, a moving means control unit 1400, and a panel attachment part 1500.

[0084] The crimping module 1100 includes a first bracket 1110, a second bracket 1120, and a crimping pad 1130. The first bracket 1110 and the second bracket 1120 may be configured to secure the crimping module 1100.

[0085] At least a portion of the central region on the lower surface of the first bracket 1110 is removed. An empty space ES exists in the central region on the lower surface of the first bracket 1110.

[0086] The second bracket 1120 and the crimping pad 1130 are placed in the empty space ES of the first bracket 1110. The crimping pad 1130 is sandwiched and fixed between the first bracket 1110 and the second bracket 1120. Specifically, the crimping pad 1130 is placed in the empty space ES of the first bracket 1110. Then, the second bracket 1120 is placed in the remaining space after the crimping pad 1130 has been placed. The first bracket 1110 and the second bracket 1120 are fixed by a separate fixing member.

[0087] The first bracket 1110 and the second bracket 1120 support the compression pad 1130 when it presses against the lower panel cover 400. Therefore, in order to increase the pressure applied to the compression pad 1130 when pressing against the lower panel cover 400, the first bracket 1110 and the second bracket 1120 may contain a material with high hardness. For example, the first bracket 1110 and the second bracket 1120 may contain a metallic material.

[0088] Furthermore, since the crimping pad 1130 directly presses against the lower panel cover 400, the crimping pad 1130 may contain a material with low hardness to prevent damage to the lower panel cover 400 by the crimping pad 1130. That is, the hardness of the crimping pad 1130 is lower than the hardness of the first bracket 1110 and the second bracket 1120. For example, the crimping pad 1130 may be a silicone pad.

[0089] A detailed explanation of the first bracket 1110 and the second bracket 1120 will be provided later in relation to Figures 28 and 29.

[0090] The crimping pad 1130 can have a square frame, a square window frame, or a planar shape of the letter "□" as shown in Figure 21. Each corner of the crimping pad 1130 can have a chamfered or rounded shape, such as being beveled or beveled at a predetermined angle of 45 degrees, as shown in Figure 21.

[0091] Alternatively, the crimping pad 1130 may include a first crimping pad 1131 and a second crimping pad 1132 extending in a first direction DR1, and a third crimping pad 1133 and a fourth crimping pad 1134 extending in a second direction DR2, as shown in Figure 22. The first crimping pad 1131, the second crimping pad 1132, the third crimping pad 1133, and the fourth crimping pad 1134 are arranged spaced apart from each other.

[0092] One end of the first crimping pad 1131 is positioned adjacent to one end of the third crimping pad 1133. The other end of the first crimping pad 1131 is positioned adjacent to one end of the fourth crimping pad 1134. One end of the second crimping pad 1132 is positioned adjacent to the other end of the third crimping pad 1133. The other end of the second crimping pad 1132 is positioned adjacent to the other end of the fourth crimping pad 1134.

[0093] One end and the other end of the first crimping pad 1131, one end and the other end of the second crimping pad 1132, one end and the other end of the third crimping pad 1133, and one end and the other end of the fourth crimping pad 1134 can each have a triangular planar shape. In this case, one end of the first crimping pad 1131 and the The space between one end of the three crimping pads 1133, and the space between the other end of the first crimping pad 1131 and one end of the fourth crimping pad 1134 can be minimized. Also, the space between one end of the second crimping pad 1132 and the other end of the third crimping pad 1133, and the space between the other end of the second crimping pad 1132 and the other end of the fourth crimping pad 1134 can be minimized. Therefore, even if the first crimping pad 1131, the second crimping pad 1132, the third crimping pad 1133, and the fourth crimping pad 1134 are spaced apart from each other, the pressure applied to the lower panel cover 400 at the first to fourth corners CS1, CS2, CS3, CS4 of the display panel 300 is maintained almost unchanged.

[0094] Alternatively, the crimping pad 1130 may further include, in addition to the first crimping pad 1131, second crimping pad 1132, third crimping pad 1133, and fourth crimping pad 1134, a first corner crimping pad 1135, a second corner crimping pad 1136, a third corner crimping pad 1137, and a fourth corner crimping pad 1138, as shown in Figure 23. The first crimping pad 1131, second crimping pad 1132, third crimping pad 1133, fourth crimping pad 1134, first corner crimping pad 1135, second corner crimping pad 1136, third corner crimping pad 1137, and fourth corner crimping pad 1138 are spaced apart from each other.

[0095] The first corner crimping pad 1135 is positioned between one end of the first crimping pad 1131 and one end of the third crimping pad 1133. The second corner crimping pad 1136 is positioned between one end of the second crimping pad 1132 and the other end of the third crimping pad 1133. The third corner crimping pad 1137 is positioned between the other end of the first crimping pad 1131 and one end of the fourth crimping pad 1134. The fourth corner crimping pad 1138 is positioned between the other end of the second crimping pad 1132 and the other end of the fourth crimping pad 1134.

[0096] The first corner crimping pad 1135, the second corner crimping pad 1136, the third corner crimping pad 1137, and the fourth corner crimping pad 1138 can each have a triangular planar shape. In this case, the space between one end of the first crimping pad 1131 and one end of the third crimping pad 1133, and the space between the other end of the first crimping pad 1131 and one end of the fourth crimping pad 1134 can be minimized. Also, the space between one end of the second crimping pad 1132 and the other end of the third crimping pad 1133, and the space between the other end of the second crimping pad 1132 and the other end of the fourth crimping pad 1134 can be minimized. Therefore, even if the first crimping pad 1131, the second crimping pad 1132, the third crimping pad 1133, the fourth crimping pad 1134, the first corner crimping pad 1135, the second corner crimping pad 1136, the third corner crimping pad 1137, and the fourth corner crimping pad 1138 are spaced apart from each other, the pressure applied to the lower panel cover 400 at the first to fourth corners CS1, CS2, CS3, and CS4 of the display panel 300 is maintained almost unchanged.

[0097] The module fixing part 1200 secures the crimp module 1100 to the module moving means 1300. The module fixing part 1200 is attached to the upper surface of the crimp module 1100.

[0098] The module moving mechanism 1300 is adjusted in length by the control of the moving mechanism control unit 1300. The crimping module 1100 can move up and down in accordance with the length adjustment of the module moving mechanism 1300. For example, if the length of the module moving mechanism 1300 is shortened, the crimping module 1100 can move upward. If the length of the module moving mechanism 1300 is lengthened, the crimping module 1100 can move downward. The module moving mechanism 1300 is formed integrally with the module fixing part 1200. For example, the module moving mechanism 1300 may be a cylinder.

[0099] The movement control unit 1400 can control the length adjustment of the module movement unit 1300. If the module movement unit 1300 is a cylinder, the movement control unit 1400 It could be a motor that drives a cylinder.

[0100] The panel attachment portion 1500 may be configured to secure the display panel 300. The panel attachment portion 1500 supports the display panel 300 to prevent damage when the back surface of the display panel 300 is pressed by rollers, a crimping module, etc. For this purpose, the front surface of the panel attachment portion 1500 may have an engraved shape that is substantially the same as the front surface shape of the display panel 300.

[0101] As shown in Figures 19 and 20, the crimping module 1100 includes crimping pads 1130 corresponding to the first to fourth side portions SS1, SS2, SS3, SS4 and the first to fourth corner portions CS1, CS2, CS3, CS4 of the display panel 300. As a result, the crimping module 1100 moves up and down, allowing the crimping pads 1130 to pressurize the lower panel cover 400 at the first to fourth side portions SS1, SS2, SS3, SS4 and the first to fourth corner portions CS1, CS2, CS3, CS4 of the display panel 300. Therefore, it is possible to prevent the lower panel cover 400 from not completely adhering to the display panel 300 and floating not only at the first to fourth corner portions CS1, CS2, CS3, CS4 but also at the first to fourth side portions SS1, SS2, SS3, SS4 of the display panel 300.

[0102] Figure 24 is a plan view showing a detailed example of the crimping pad in Figure 20. Figure 25 is a bottom view showing a detailed example of the crimping pad in Figure 20. Figure 26 is a cross-sectional view showing an example of a crimping pad cut along V-V' in Figures 24 and 25. Figure 27 is a cross-sectional view showing an example of a crimping pad cut along VI-VI' in Figures 24 and 25. Figure 28 is a cross-sectional view showing an example of a crimping pad cut along VII-VII' in Figures 24 and 25.

[0103] Figures 24 and 25 illustrate that the crimping pad 1130 has a planar shape of the square frame shown in Figure 21. Figure 26 shows an example of a cross-section of the first crimping portion 1331 and the third crimping portion 1333 of the crimping pad 1130, and Figure 27 shows an example of a cross-section of the first corner crimping portion 1335 and the third corner crimping portion 1337 of the crimping pad 1130. Figure 28 shows an example of a cross-section of the second crimping portion 1332 and the fourth crimping portion 1334 of the crimping pad 1130.

[0104] Referring to Figures 24 to 28, the crimping pad 1130 may include a fixing portion 131, a crimping support portion 132, and a crimping portion 133. Figures 24 to 28 illustrate that the fixing portion 131, the crimping support portion 132, and the crimping portion 133 are integrally formed, but are not limited to this. The fixing portion 131, the crimping support portion 132, and the crimping portion 133 have different configurations and are connected to each other using separate adhesive members.

[0105] The fixing portion 131 is positioned on the upper part of the crimping pad 1130. The upper surface of the fixing portion 131 may be the upper surface of the crimping pad 1130. The fixing portion 131 may have a planar shape of a square frame. The fixing portion 131 is inserted into and fixed into the insertion hole (IH) formed by the main body portion 1111 and the first projection portion 1112 of the first bracket 1110, as shown in Figure 29.

[0106] The fixing portion 131 may include a first fixing portion 1311, a second fixing portion 1312, a third fixing portion 1313, and a fourth fixing portion 1314. The first fixing portion 1311 and the third fixing portion 1313 extend in the second direction DR2, and the second fixing portion 1312 and the fourth fixing portion 1314 extend in the first direction DR1. One end of the first fixing portion 1311 is connected to one end of the second fixing portion 1312, and the other end of the first fixing portion 1311 is connected to one end of the fourth fixing portion 1314. One end of the third fixing portion 1313 is connected to the other end of the second fixing portion 1312, and the other end of the third fixing portion 1313 is connected to the other end of the fourth fixing portion 1314.

[0107] The crimping support portion 132 connects the fixing portion 131 and the crimping portion 133. The crimping support portion 132 is connected to the lower surface of the fixing portion 131 and the upper surface of the crimping portion 133. The crimping support portion 132 may include a first crimping support portion 1321, a second crimping support portion 1322, a third crimping support portion 1323, and a fourth crimping support portion 1324.

[0108] The first crimping support portion 1321 protrudes from the lower surface of the first fixing portion 1311. The second crimping support portion 1322 protrudes from the lower surface of the second fixing portion 1312. The third crimping support portion 1323 protrudes from the lower surface of the third fixing portion 1313. The fourth crimping support portion 1324 protrudes from the lower surface of the fourth fixing portion 1314.

[0109] The width of the first crimping support portion 1321 may be narrower than the width of the first fixing portion 1311, and the width of the second crimping support portion 1322 may be narrower than the width of the second fixing portion 1312. The width of the third crimping support portion 1323 may be narrower than the width of the third fixing portion 1313, and the width of the fourth crimping support portion 1324 may be narrower than the width of the fourth fixing portion 1314.

[0110] The thickness of the first crimp support portion 1321 (length of the third direction DR3) may be greater than the thickness of the first fixing portion 1311, and the thickness of the second crimp support portion 1322 may be less than the thickness of the second fixing portion 1312. The thickness of the third crimp support portion 1323 may be less than the thickness of the third fixing portion 1313, and the thickness of the fourth crimp support portion 1324 may be less than the thickness of the fourth fixing portion 1314.

[0111] The crimping portion 133 contacts the lower panel cover 400 to pressurize the lower panel cover 400 with the crimping pad 1130. The crimping portion 133 may include a first crimping portion 1331, a second crimping portion 1332, a third crimping portion 1333, and a fourth crimping portion 1334.

[0112] The upper surface of the first crimping portion 1331 is connected to the first crimping support portion 1321, and the upper surface of the second crimping portion 1332 is connected to the second crimping support portion 1322. The upper surface of the third crimping portion 1333 is connected to the third crimping support portion 1323, and the upper surface of the fourth crimping portion 1334 is connected to the fourth crimping support portion 1324.

[0113] The width of the first crimping portion 1331 may be greater than the width of the first crimping support portion 1321, and the width of the second crimping portion 1332 may be narrower than the width of the second crimping support portion 1322. The width of the third crimping portion 1333 may be narrower than the width of the third crimping support portion 1323, and the width of the fourth crimping portion 1334 may be narrower than the width of the fourth crimping support portion 1324.

[0114] The first crimped portion 1331 may include a first inner portion 3311 and a first side crimped portion 3312. The first inner portion 3311 is located inside the first crimped portion 1331, and the first side crimped portion 3312 is located outside the first crimped portion 1331. The thickness of the first inner portion 3311 increases from the inside to the outside of the first crimped portion 1331. The lower surface of the first inner portion 3311 is formed at an angle. The first side crimped portion 3312 decreases from the inside to the outside of the first crimped portion 1331. The lower surface of the first side crimped portion 3312 is formed to have a first curvature. The first curvature is substantially the same as the curvature of the first side portion SS1 of the display panel 300.

[0115] The second crimped portion 1332 may include a second inner portion 3321 and a second side crimped portion 3322. The second inner portion 3321 is located inside the second crimped portion 1332, and the second side crimped portion 3322 is located outside the second crimped portion 1332. The second inner portion 3321 becomes thicker from the inside to the outside of the second crimped portion 1332. The lower surface of the second inner portion 3321 is formed at an angle. The second side crimped portion 3322 becomes thinner from the inside to the outside of the second crimped portion 1332. The lower surface of the second side crimped portion 3322 is formed to have a second curvature. The second curvature is substantially the same as the curvature of the second side portion SS2 of the display panel 300.

[0116] The third crimped portion 1333 may include a third inner portion 3331 and a third side crimped portion 3332. The third inner portion 3331 is located inside the third crimped portion 1333, and the third side crimped portion 3332 is located outside the third crimped portion 1333. The third inner portion 3331 becomes thicker from the inside to the outside of the third crimped portion 1333. The lower surface of the third inner portion 3331 is formed at an angle. The third side crimped portion 3332 becomes thinner from the inside to the outside of the third crimped portion 1333. The lower surface of the third side crimped portion 3332 is formed to have a third curvature. The third curvature is substantially the same as the curvature of the third side portion SS3 of the display panel 300.

[0117] The fourth crimped portion 1334 may include a fourth inner portion 3341 and a fourth side crimped portion 3342. The fourth inner portion 3341 is located inside the fourth crimped portion 1334, and the fourth side crimped portion 3342 is located outside the fourth crimped portion 1334. The fourth inner portion 3341 becomes thicker from the inside to the outside of the fourth crimped portion 1334. The lower surface of the fourth inner portion 3341 is formed at an angle. The fourth side crimped portion 3342 becomes thinner from the inside to the outside of the fourth crimped portion 1334. The lower surface of the fourth side crimped portion 3342 is formed to have a third curvature. The fourth curvature may be substantially the same as the curvature of the fourth side portion SS4 of the display panel 300.

[0118] The first, second, third, and fourth curvatures are substantially identical. Or, the first, second, third, and fourth curvatures may differ. Or, at least two of the first, second, third, and fourth curvatures may be substantially identical. For example, the first and third curvatures differ from the second and fourth curvatures, the first and third curvatures are substantially identical, and the second and fourth curvatures are substantially identical.

[0119] The crimping portion 133 may further include a first corner crimping portion 1335, a second corner crimping portion 1336, a third corner crimping portion 1337, a fourth corner crimping portion 1338, and a through-hole avoidance portion 1339.

[0120] The first corner crimping portion 1335 is positioned between the first crimping portion 1331 and the second crimping portion 1332. The lower surface of the first corner crimping portion 1335 may have a rectangular planar shape. The lower surface of the first corner crimping portion 1335 is flat in order to crimp the lower panel cover 400 to the first corner portion CS1 of the display panel 300. The thickness of the first corner crimping portion 1335 may be thinner than the thickness of the first crimping portion 1331 and the thickness of the second crimping portion 1332.

[0121] The second corner crimping portion 1336 is positioned between the second crimping portion 1332 and the third crimping portion 1333. The lower surface of the second corner crimping portion 1336 may have a rectangular planar shape. The lower surface of the second corner crimping portion 1336 is flat for crimping the lower panel cover 400 at the second corner portion CS2 of the display panel 300. The thickness of the second corner crimping portion 1336 may be thinner than the thickness of the second crimping portion 1332 and the thickness of the third crimping portion 1333.

[0122] The third corner crimping portion 1337 is positioned between the third crimping portion 1333 and the fourth crimping portion 1334. The lower surface of the third corner crimping portion 1337 may have a rectangular planar shape. The lower surface of the third corner crimping portion 1337 is flat for crimping the lower panel cover 400 to the third corner portion CS3 of the display panel 300. The thickness of the third corner crimping portion 1337 may be thinner than the thickness of the third crimping portion 1333 and the thickness of the fourth crimping portion 1334.

[0123] The fourth corner crimping portion 1338 is positioned between the first crimping portion 1331 and the fourth crimping portion 1334. The lower surface of the fourth corner crimping portion 1338 may have a rectangular planar shape. The lower surface of the fourth corner crimping portion 1338 is flat for crimping the lower panel cover 400 to the fourth corner portion CS4 of the display panel 300. The thickness of the fourth corner crimping portion 1338 may be thinner than the thickness of the first crimping portion 1331 and the thickness of the fourth crimping portion 1334.

[0124] The through-hole avoidance portion 1339 is formed at a position corresponding to at least one through-hole TH1, TH2 of the display panel 300. The thickness of the crimping pad 1130 in the through-hole avoidance portion 1339 may be thinner than the thickness of the crimping pad 1130 around the through-hole avoidance portion 1339. Since the lower panel cover 400 is not placed over at least one through-hole TH1, TH2 of the display panel 300, the through-hole avoidance portion 1339 prevents the display panel 300 from being pressurized by the crimping pad 1130 and damaging at least one through-hole TH1, TH2.

[0125] As shown in Figures 24 to 28, the crimping pad 1130 includes a first crimping portion 1331 having a first curvature substantially the same as the curvature of the first side portion SS1 of the display panel 300, a second crimping portion 1332 having a second curvature substantially the same as the curvature of the second side portion SS2, a third crimping portion 1333 having a third curvature substantially the same as the curvature of the third side portion SS3, and a fourth crimping portion 1334 having a fourth curvature substantially the same as the curvature of the fourth side portion SS4. This allows the crimping pad 1130 to pressurize the lower panel cover 400 at the first to fourth side portions SS1, SS2, SS3, and SS4 of the display panel 300, thereby preventing the lower panel cover 400 from not adhering completely to the display panel 300 and floating at the first to fourth side portions SS1, SS2, SS3, and SS4.

[0126] Furthermore, the crimping pad 1130 is designed to flatten the lower surfaces of the first corner crimping portion 1335, the second corner crimping portion 1336, the third corner crimping portion 1337, and the fourth corner crimping portion 1338, taking into consideration the first corner portion CS1, the second corner portion CS2, the third corner portion CS3, and the fourth corner portion CS4 of the display panel 300. As a result, the crimping pad 1130 can apply pressure to the lower panel cover 400 at the first to fourth corner portions CS1, CS2, CS3, and CS4 of the display panel 300, thus preventing the lower panel cover 400 from not adhering completely to the display panel 300 and floating at the first to fourth corner portions CS1, CS2, CS3, and CS4.

[0127] Figure 29 is a cross-sectional view showing an example of a display panel mounting device cut along line VIII-VIII' in Figure 19. Figure 30 is a cross-sectional view showing an example of a display panel mounting device cut along line IX-IX' in Figure 19. Figure 31 is an enlarged cross-sectional view showing an example of area A in Figure 29.

[0128] Figures 29 to 31 show the case where the crimping module 1100 of the display panel attachment device 100 moves downward to pressurize the lower panel cover 400.

[0129] Referring to Figures 29 to 31, the crimping module 1100 includes a first bracket 1110, a second bracket 1120, and a crimping pad 1130.

[0130] The first bracket 1110 may include a main body portion 1111, a first projection portion 1112, and a second projection portion 1113.

[0131] The main body 1111 has a hexagonal shape, but is not limited to this.

[0132] The first projection 1112 protrudes in a third direction DR3 from the edge of one surface of the main body 1111. The first projection 1112 forms an insertion hole (IH) such that the fixing portion 1131 of the crimping pad 1130 fits over it in a loop. For example, the main body 1111 and the first projection 1112 can have a "⊂" shaped cross-section for the insertion hole (IH), and the outside of the fixing portion 1131 of the crimping pad 1130 can be inserted into the insertion hole (IH).

[0133] The first projection 1112 is a first extension that protrudes in the third direction DR3 from the edge of one surface of the main body 1111. It may include a long portion 1112A and a second extension 1112B that protrudes from the first extension 1112A in the first direction DR1.

[0134] The second projection 1113 protrudes in the third direction DR3 from the second extension 1112B of the first projection 1112.

[0135] Due to the main body portion 1111, the first projection portion 1112, and the second projection portion 1113, there is empty space in the central region of the lower surface of the first bracket 1110. In other words, the first bracket 1110 can have a configuration in which at least a portion of the central region of the lower surface is removed.

[0136] The second bracket 1120 is positioned on the lower surface of the main body portion 1111 of the first bracket 1110. The second bracket 1120 is in contact with the main body portion 1111 of the first bracket 1110.

[0137] One side of the second bracket 1120 is in contact with the inner surface of the fixing portion 1131 of the crimping pad 1130 and the inner surface of the crimping support portion 1132. Since the width of the fixing portion 1131 of the crimping pad 1130 is greater than the width of the crimping support portion 1132, the length of the first direction DR1 on the upper surface of the second bracket 1120 may be shorter than the length of the first direction DR1 on the lower surface. The length of the second direction DR2 on the upper surface of the second bracket 1120 may be shorter than the length of the second direction DR2 on the lower surface.

[0138] The fixing portion 1131 of the crimping pad 1130 is surrounded by the main body portion 1111 and the first projection portion 1112 of the first bracket 1110, and the second bracket 1120. The crimping support portion 1132 of the crimping pad 1130 is positioned between the second projection portion 1113 of the first bracket 1110 and one side of the second bracket 1120. Therefore, the crimping pad 1130 is positioned and fixed between the first bracket 1110 and the second bracket 1120.

[0139] The crimping portion 1333 of the crimping pad 1130 is positioned on the lower surface of the second protrusion 1113 of the first bracket 1110. The crimping portion 1333 of the crimping pad 1130 contacts the lower surface of the second protrusion 1113 of the first bracket 1110.

[0140] The crimping portion 1333 of the crimping pad 1130 may include an inner portion 1333A and a side crimping portion 1333B. The inner portion 1333A and the side crimping portion 1333B may be any one of the first inner portion 3311 and first side crimping portion 3312 of the first crimping portion 1331, the second inner portion 3321 and second side crimping portion 3322 of the second crimping portion 1332, the third inner portion 3331 and third side crimping portion 3332 of the third crimping portion 1333, and the fourth inner portion 3341 and fourth side crimping portion 3342 of the fourth crimping portion 1334, as described in relation to Figures 24 to 28. The inner portion 1333A is connected to the crimping support portion 1132, and the side crimping portion 1333B is responsible for pressurizing the lower panel cover 400.

[0141] The fixing member 1140 serves to fix the first bracket 1110 and the second bracket 1120. The second bracket 1120 is fixed to the first bracket 1110 by the fixing member 1140. The first bracket 1110 may include a first fixing hole FH1 into which the fixing member 1140 is fixed, and the second bracket 1120 may include a second fixing hole FH2 into which the fixing member 1140 is inserted. For example, the fixing member 1140 may be a screw, in which case the fixing member 1140 is fastened to the fixing hole FH1.

[0142] The second fixing hole FH2 may be a hole that penetrates the second bracket 1120. Since the fixing member 1140 is inserted into the second fixing hole FH2, it does not protrude outside the lower surface of the second bracket 1120. The length of the fixing member 1140 may be less than the length of the second fixing hole FH2.

[0143] The first bracket 1110 includes at least one first air passage hole APH1, and the second bracket The ket 1120 may include at least one second air passage hole APH2. At least one first air passage hole APH1 and at least one second air passage hole APH2 overlap.

[0144] When the lower panel cover 400 is pressurized by the crimping module 1100, the crimping pad 1130 has a planar shape with a square frame, so air is trapped in the central region of the crimping module 1100. This can make it difficult to control the pressure applied by the crimping module 1100. When the first air passage hole APH1 of the first bracket 1110 and the second air passage hole APH2 of the second bracket 1120 overlap, the air in the central region of the crimping module 1100 escapes through the first air passage hole APH1 and the second air passage hole APH2. Therefore, it is possible to prevent the difficulty in controlling the pressure applied by the crimping module 1100 caused by air being trapped in the central region of the crimping module 1100.

[0145] Figure 32 is an enlarged cross-sectional view showing yet another example of area A in Figure 29.

[0146] The embodiment in Figure 32 differs from the embodiment in Figure 30 in that the inner portion 1333A is formed to press against the edge of the front portion FS of the display panel 300, and a portion of the lower surface of the side crimping portion 1333B has a recessed cross-section.

[0147] Referring to Figure 31, the inner portion 1333A can press against the edge of the front portion FS of the display panel 300, thus preventing the lower panel cover 400 from completely adhering to the display panel 300 and floating at the edge of the front portion FS. In addition, a portion of the lower surface of the side crimping portion 1333B that does not come into contact with the lower panel cover 400 can have a recessed cross-section. The portion of the lower surface of the side crimping portion 1333B that does not come into contact with the lower panel cover 400 is positioned adjacent to the upper surface of the side crimping portion 1333B.

[0148] Figure 33 is an enlarged cross-sectional view showing yet another example of area A in Figure 29.

[0149] The embodiment in Figure 33 differs from the embodiment in Figure 30 in that a portion of the lower surface of the side crimping portion 1333B that contacts the lower panel cover 400 has a predetermined curvature, while another portion of the lower surface of the side crimping portion 1333B that does not contact the lower panel cover 400 is formed at an angle without a predetermined curvature.

[0150] Figure 34 is a cross-sectional view showing an example of a display panel mounting device cut along line VIII-VIII' in Figure 19. Figure 35 is a cross-sectional view showing an example of a display panel mounting device cut along line IX-IX' in Figure 19.

[0151] The embodiments in Figures 34 and 35 differ from those in Figures 29 and 30 in that the second bracket 1120 includes a support portion 1121 that protrudes from the lower surface of the second bracket 1120 and supports the lower surface of the crimping portion 1333 in order to minimize deformation of the crimping portion 1333 when it is crimped to the lower panel cover 400. The support portion 1121 can support the lower surface of the inner portion 1333A of the crimping portion 1333 by contacting the lower surface of the inner portion 1333A. Explanations that overlap with those in Figures 29 and 30 are omitted in Figures 34 and 35.

[0152] Although embodiments of the present invention have been described above with reference to the attached drawings, those with ordinary skill in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without altering its technical idea or essential features. Therefore, it should be understood that the above-described embodiment is illustrative in all respects and not limiting. [Explanation of symbols]

[0153] 10 Display device 100 Display Panels 200 Display drive circuit 300 Display Circuit Board FS front part SS1 1st side part SS2 2nd side part SS3 3rd side part SS4 4th side part CS1, Corner 1 CS2 Second Corner Section CS3, Third Corner CS4, Corner 4

Claims

1. A panel mounting section that houses the display panel, It includes a crimping module that applies pressure to the lower panel cover located on the display panel, The crimping module is, First bracket and A second bracket is positioned in the empty space in the central region of the lower surface of the first bracket, It includes a crimping pad located between the first bracket and the second bracket, The aforementioned compression pad is A fixing portion fixed between the first bracket and the second bracket, The crimping module has a crimping portion that contacts the lower panel cover when it applies pressure to the lower panel cover, An attachment device for a display panel, including a crimping support portion between the fixing portion and the crimping portion.

2. The first bracket is, The main body and A first protrusion extends from the edge of one side of the main body and forms an insertion hole into which the fixing part is inserted, The display panel attachment device according to claim 1, further comprising a second projection protruding from the end of the first projection.

3. The second protrusion contacts the crimping support portion and the crimping portion, as described in claim 2, for the display panel attachment device.

4. The second bracket is positioned on the lower surface of the main body portion, as described in claim 2 for the display panel attachment device.

5. The first protrusion is, A first extension adjacent to the main body, The display panel attachment device according to claim 4, further comprising a second extension adjacent to the crimping support portion.

6. The display panel attachment device according to claim 5, wherein the width of the first extension in one direction is narrower than the width of the second extension in one direction.

7. The mounting device for a display panel according to claim 5, wherein the fixing portion is located between the first extension portion and the second bracket in one direction.

8. The mounting device for a display panel according to claim 5, wherein the crimping support portion is located between the second extension portion and the second bracket in one direction.

9. The mounting device for a display panel according to claim 1, wherein the width of the fixing portion in one direction is wider than the width of the crimping support portion in one direction.

10. The mounting device for a display panel according to claim 1, wherein the length in one direction of the upper surface of the second bracket is shorter than the length in one direction of the lower surface of the second bracket.

11. The first bracket is provided with a first air passage hole that penetrates the first bracket, The display panel attachment device according to claim 1, wherein the second bracket is provided with a second air passage hole that penetrates the second bracket.

12. The display panel attachment device according to claim 11, wherein the first air passage hole and the second air passage hole overlap each other.

13. The display panel attachment device according to claim 1, wherein the hardness of the pressure pad is lower than the hardness of the first bracket and the second bracket.

14. The display panel attachment device according to claim 1, wherein the pressure pad is a silicone pad, and the first bracket and the second bracket each include metal.

15. The display panel attachment device according to claim 1, further comprising a fixing member for fixing the second bracket to the first bracket.

16. The first bracket includes a first fixing hole into which a fixing member is fixed. The mounting device for a display panel according to claim 1, wherein the second bracket includes a second fixing hole into which the fixing member is inserted, and the second fixing hole penetrates the second bracket.

17. The display panel includes a front portion, a first side portion extending from the first side of the front portion, a second side portion extending from the second side of the front portion, and a corner portion between the first side portion and the second side portion. The adhesive device for a display panel according to claim 1, wherein the pressure pad is formed to correspond to the first side portion, the second side portion, and the corner portion.

18. The display panel attachment device according to claim 17, wherein when the crimping module applies pressure to the lower panel cover, the crimping pad contacts the lower panel cover at the first side portion, the second side portion, and the corner portion of the display panel.

Images