Panel assembly, display panel manufacturing device and display panel manufacturing method

Abstract

The invention discloses a panel assembly, a manufacturing device of a display panel and a manufacturing method of the display panel. The panel assembly includes: a metal plate; and a display panel disposed on the metal plate and having a bent portion at at least one corner portion. By pressing the panel assembly from the bottom to the top, defects such as buckling and wrinkling may be prevented from occurring at the corner portion.

Description

Technical Field

[0001] Embodiments of the inventive concept generally relate to a panel assembly, an apparatus for manufacturing a display panel, and a method for manufacturing a display panel. Background Art

[0002] Conventionally, display panels consisting solely of flat surfaces have been used, but recently, display panels with various curved surfaces are being used. A display panel may include multiple side portions and a corner portion located between two adjacent side portions. When a corner portion of a display panel is bent, buckling or wrinkling may occur. Consequently, the display quality of the display device may deteriorate. Summary of the Invention

[0003] An embodiment provides a panel assembly.

[0004] An embodiment provides a device for manufacturing a display panel.

[0005] An embodiment provides a method for manufacturing a display panel.

[0006] According to an embodiment, a panel assembly may include: a metal plate; and a display panel provided on the metal plate and having a bent portion at at least one corner portion. The metal plate may have a bent portion in a region corresponding to the bent portion of the display panel.

[0007] In an embodiment, the metal plate may include aluminum.

[0008] In one embodiment, the panel assembly may further include: a resin disposed between the metal plate and the display panel and used to bond the metal plate and the display panel.

[0009] In one embodiment, the panel assembly may further include: a pressure-sensitive adhesive disposed between the metal plate and the display panel and used to bond the metal plate and the display panel.

[0010] In one embodiment, the edge of the metal plate, the edge of the display panel, and the edge of the pressure-sensitive adhesive may be disposed along a straight line.

[0011] A manufacturing apparatus according to an embodiment may include: a fixing member for fixing the panel assembly; and a pressing member configured to press a central portion of the panel assembly from a bottom toward a top.

[0012] In an embodiment, the panel assembly may include: a metal plate; and a display panel provided on the metal plate and having a flexible property at at least one corner portion.

[0013] In an embodiment, the fixing member may be configured to fix an outer portion of the metal plate.

[0014] In one embodiment, when the pressing member presses a central portion of the panel assembly, at least one corner portion of the display panel may be bent.

[0015] In one embodiment, when the pressing member presses the central portion of the panel assembly, tension may be generated in the panel assembly.

[0016] In one embodiment, the panel assembly may further include: a resin disposed between the metal plate and the display panel and used to bond the metal plate and the display panel.

[0017] In one embodiment, the panel assembly may further include: a pressure-sensitive adhesive disposed between the metal plate and the display panel and used to bond the metal plate and the display panel; and a dummy portion disposed on the pressure-sensitive adhesive and surrounding at least one corner portion of the display panel.

[0018] In an embodiment, the fixing member may be configured to fix the outer portion and the dummy portion of the metal plate.

[0019] A manufacturing method according to an embodiment may include: forming a panel assembly; fixing the panel assembly to a manufacturing device; and pressing a center portion of the panel assembly from a bottom toward a top.

[0020] In an embodiment, the panel assembly may include: a metal plate; and a display panel provided on the metal plate and having a flexible property at at least one corner portion.

[0021] In one embodiment, when the panel assembly is pressed by a pressing member of the manufacturing apparatus, at least one corner portion of the display panel may be bent.

[0022] In one embodiment, when the panel assembly is pressed by the pressing member, tension may be generated in the panel assembly.

[0023] In one embodiment, outer portions of the metal sheets may be secured when the panel assembly is secured to the manufacturing apparatus.

[0024] In an embodiment, the manufacturing method may further include: removing an outer portion after pressing the central portion of the panel assembly.

[0025] Therefore, in the method for manufacturing a display panel according to an embodiment of the present invention, the panel assembly can be fixed and pressed from the bottom to the top. Accordingly, only tension can be generated in the panel assembly. As a result, compressive deformation can be prevented from being applied to the corner portions, and defects such as buckling and wrinkling can be prevented from occurring in the corner portions having a three-dimensional curved shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are included to provide a further understanding of the inventive concept and are incorporated in and constitute a part of this specification and, together with the description, illustrate embodiments of the inventive concept.

[0027] Figure 1 is a perspective view illustrating a display panel manufactured according to a method of manufacturing a display panel according to an embodiment of the inventive concept.

[0028] Figure 2 for Figure 1 Magnified view of area A.

[0029] Figure 3 As an example Figure 1 Block diagram of the composition of the display panel.

[0030] Figure 4 For example, include Figure 3 Circuit diagram of a pixel in a display panel.

[0031] Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 and Figure 9 is a diagram illustrating a method of manufacturing a display panel according to an embodiment of the inventive concept.

[0032] Figure 10 、 Figure 11 、 Figure 12 、 Figure 13 and Figure 14 is a diagram illustrating a method of manufacturing a display panel according to an embodiment of the inventive concept. DETAILED DESCRIPTION

[0033] Illustrative, non-limiting embodiments will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings.

[0034] Figure 1 is a perspective view illustrating a display panel manufactured according to a method of manufacturing a display panel according to an embodiment of the inventive concept. Figure 2 for Figure 1 Magnified view of area A.

[0035] See also Figure 1 The display panel PNL manufactured according to the method of manufacturing a display panel according to an embodiment of the inventive concept may have a flat portion FS; first to fourth side portions ES1, ES2, ES3, and ES4; and first to fourth corner portions CS1, CS2, CS3, and CS4.

[0036] The flat portion FS may have a flat surface. For example, the flat portion FS may be parallel to a plane defined by a first direction D1 and a second direction D2 intersecting the first direction D1. An image may be displayed through the flat portion FS, and the flat portion FS may be a main display portion of the display panel PNL.

[0037] The first to fourth side portions ES1, ES2, ES3, and ES4 may extend from the flat portion FS. For example, the first to third side portions ES1 and ES3 may contact the long sides of the flat portion FS, and the second to fourth side portions ES2 and ES4 may contact the short sides of the flat portion FS. An image may be displayed on the first to fourth side portions ES1, ES2, ES3, and ES4.

[0038] The first to fourth corner portions CS1, CS2, CS3, and CS4 may extend from the flat portion FS and the first to fourth side portions ES1, ES2, ES3, and ES4. For example, the first corner portion CS1 may contact the flat portion FS, the first side portion ES1, and the second side portion ES2; the second corner portion CS2 may contact the flat portion FS, the second side portion ES2, and the third side portion ES3; the third corner portion CS3 may contact the flat portion FS, the third side portion ES3, and the fourth side portion ES3; and the fourth corner portion CS4 may contact the flat portion FS, the fourth side portion ES4, and the first side portion ES1. Images may be displayed through the first to fourth corner portions CS1, CS2, CS3, and CS4.

[0039] See also Figure 2 The display panel PNL may have a flexible property at at least one side portion and / or at least one corner portion. For example, the side portion and the corner portion may be bent.

[0040] In one embodiment, each of the first side portion ES1 and the second side portion ES2 may have a two-dimensional curved shape. Here, the two-dimensional curved shape may be a shape in which a plane is bent in one direction. For example, the first side portion ES1 may be bent in one direction from the flat portion FS.

[0041] In one embodiment, the first corner portion CS1 may have a three-dimensional curved shape. Here, the three-dimensional curved shape may be a shape in which a plane is bent in two or more directions. For example, the first corner portion CS1 may be bent between two directions perpendicular to each other in multiple directions.

[0042] When an image is displayed through the flat portion FS, the first to fourth side portions ES1 , ES2 , ES3 , and ES4 , and the first to fourth corner portions CS1 , CS2 , CS3 , and CS4 , satisfaction of a user using the display panel PNL may be improved.

[0043] Figure 3 As an example Figure 1 Block diagram of the composition of the display panel. Figure 4 For example, include Figure 3 Circuit diagram of a pixel in a display panel.

[0044] See also Figure 3 , the display panel PNL may include pixels PX, a data driver DDV, a gate driver GDV, an emission driver EDV, and a controller CON.

[0045] The data driver DDV can generate a data voltage DATA based on the output image data ODAT and the data control signal DCTRL. Furthermore, the data driver DDV can generate a data voltage DATA corresponding to the output image data ODAT and can output the data voltage DATA in response to the data control signal DCTRL. The data voltage DATA can be transmitted to the pixel PX via the data line DL. The data control signal DCTRL may include an output data enable signal, a horizontal start signal, and a load signal. For example, the data driver DDV may be implemented using one or more integrated circuits (ICs).

[0046] The gate driver GDV can generate a gate signal GS based on the gate control signal GCTRL. The gate signal GS can be transmitted to the pixel PX via the gate line GL. For example, the gate signal GS may include a first gate signal GW, a second gate signal GC, and a third gate signal GB. Each of the first to third gate signals GW, GC, and GB may include a gate-on voltage for turning on a transistor and a gate-off voltage for turning off a transistor. The gate control signal GCTRL may include a vertical start signal, a clock signal, and the like.

[0047] The emission driver EDV may generate an emission drive signal EM based on the emission control signal ECTRL. The emission drive signal EM may be transmitted to the pixel PX via the emission control line EML. The emission drive signal EM may include a gate-on voltage and a gate-off voltage. The gate-on voltage and gate-off voltage included in the emission drive signal EM may have the same voltage as the gate-on voltage and gate-off voltage included in the gate signal GS. The emission drive signal EM may include a vertical start signal, a clock signal, and the like.

[0048] A controller CON (e.g., a timing controller (T-CON)) may receive input image data IDAT and a control signal CTRL from an external host processor (e.g., a GPU). For example, the input image data IDAT may be RGB data including red image data, green image data, and blue image data. The control signal CTRL may include a vertical synchronization signal, a horizontal synchronization signal, an input data enable signal, and a master clock signal. The controller CON may generate a gate control signal GCTRL, an emission control signal ECTRL, a data control signal DCTRL, and output image data ODAT based on the input image data IDAT and the control signal CTRL.

[0049] See also Figure 4 The pixel PX may include a pixel circuit PC and at least one organic light emitting diode OLED. The pixel circuit PC may provide a driving current to the organic light emitting diode OLED.

[0050] In one embodiment, the pixel circuit PC may include a plurality of transistors and at least one storage capacitor. For example, the pixel circuit PC may include a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, a fifth transistor T5, a sixth transistor T6, a seventh transistor T7, and a storage capacitor CST.

[0051] The first transistor T1 may include a gate terminal, a first terminal (e.g., a source terminal), and a second terminal (e.g., a drain terminal). The gate terminal of the first transistor T1 may be connected to the storage capacitor CST. The first terminal of the first transistor T1 may be provided with a high power supply voltage ELVDD. The second terminal of the first transistor T1 may be connected to the sixth transistor T6. The first transistor T1 may generate a drive current based on the data voltage DATA.

[0052] The second transistor T2 may include a gate terminal, a first terminal (e.g., a source terminal), and a second terminal (e.g., a drain terminal). The gate terminal of the second transistor T2 may receive a first gate signal GW via a gate line GL. The first terminal of the second transistor T2 may receive a data voltage DATA. The second terminal of the second transistor T2 may provide the data voltage DATA to the first transistor T1.

[0053] The second transistor T2 can be turned on or off in response to the first gate signal GW. For example, when the second transistor T2 is a PMOS transistor, the second transistor T2 can be turned off when the first gate signal GW has a positive voltage level and can be turned on when the first gate signal GW has a negative voltage level.

[0054] The third transistor T3 may include a gate terminal, a first terminal (e.g., a source terminal), and a second terminal (e.g., a drain terminal). The gate terminal of the third transistor T3 may receive a first gate signal GW. The first terminal of the third transistor T3 may be connected to the second terminal of the first transistor T1, and the second terminal of the third transistor T3 may be connected to the gate terminal of the first transistor T1.

[0055] The third transistor T3 can be turned on or off in response to the first gate signal GW. For example, when the third transistor T3 is a PMOS transistor, the third transistor T3 can be turned on when the first gate signal GW has a negative voltage level, and the third transistor T3 can be turned off when the first gate signal GW has a positive voltage level. During the period when the third transistor T3 is turned on in response to the first gate signal GW, the third transistor T3 can be diode-connected to the first transistor T1. Accordingly, the third transistor T3 can compensate for the threshold voltage of the first transistor T1.

[0056] The fourth transistor T4 may include a gate terminal, a first terminal (eg, a source terminal), and a second terminal (eg, a drain terminal). The gate terminal of the fourth transistor T4 may receive the second gate signal GC. The fourth transistor T4 may transmit the initialization voltage VINT to the gate terminal of the first transistor T1.

[0057] The fourth transistor T4 can be turned on or off in response to the second gate signal GC. For example, when the fourth transistor T4 is a PMOS transistor, the fourth transistor T4 can be turned on when the second gate signal GC has a negative voltage level, and the fourth transistor T4 can be turned off when the second gate signal GC has a positive voltage level.

[0058] When the fourth transistor T4 is turned on in response to the second gate signal GC, the initialization voltage VINT may be provided to the gate terminal of the first transistor T1. Accordingly, the gate terminal of the first transistor T1 may be initialized to the initialization voltage VINT.

[0059] The fifth transistor T5 may include a gate terminal, a first terminal (e.g., a source terminal), and a second terminal (e.g., a drain terminal). The gate terminal of the fifth transistor T5 may receive the emission drive signal EM. The first terminal of the fifth transistor T5 may receive the high power supply voltage ELVDD. The second terminal of the fifth transistor T5 may be connected to the first transistor T1. When the fifth transistor T5 is turned on in response to the emission drive signal EM, the fifth transistor T5 may provide the high power supply voltage ELVDD to the first transistor T1.

[0060] The sixth transistor T6 may include a gate terminal, a first terminal (e.g., a source terminal), and a second terminal (e.g., a drain terminal). The gate terminal of the sixth transistor T6 may receive the emission drive signal EM. The first terminal of the sixth transistor T6 may be connected to the first transistor T1. The second terminal of the sixth transistor T6 may be connected to the organic light emitting diode OLED. When the sixth transistor T6 is turned on in response to the emission drive signal EM, the sixth transistor T6 may provide a drive current to the organic light emitting diode OLED.

[0061] The seventh transistor T7 may include a gate terminal, a first terminal (e.g., a source terminal), and a second terminal (e.g., a drain terminal). The gate terminal of the seventh transistor T7 may receive a third gate signal GB. The second terminal of the seventh transistor T7 may receive an initialization voltage VINT. The first terminal of the seventh transistor T7 may be connected to the organic light emitting diode OLED. When the seventh transistor T7 is turned on in response to the third gate signal GB, the seventh transistor T7 may provide the initialization voltage VINT to the organic light emitting diode OLED. Accordingly, the seventh transistor T7 may initialize the first terminal of the organic light emitting diode OLED to the initialization voltage VINT.

[0062] The storage capacitor CST may include a first terminal and a second terminal. The first terminal of the storage capacitor CST may be connected to the gate terminal of the first transistor T1, and the second terminal of the storage capacitor CST may receive the high power supply voltage ELVDD. The storage capacitor CST may maintain the voltage level of the gate terminal of the first transistor T1 during the inactivation period of the first gate signal GW.

[0063] The organic light emitting diode (OLED) may include a first terminal (e.g., an anode terminal) and a second terminal (e.g., a cathode terminal). The first terminal of the organic light emitting diode (OLED) may receive a driving current, and the second terminal may receive a low power supply voltage (ELVSS). The organic light emitting diode (OLED) may generate light having a brightness corresponding to the driving current.

[0064] Figure 4 The connection structure of the pixel circuit PC and the organic light emitting diode OLED shown in FIG. 1 is an example and may be changed in various ways.

[0065] Figures 5 to 9 is a diagram illustrating a method of manufacturing a display panel according to an embodiment of the inventive concept.

[0066] A method of manufacturing a display panel according to an embodiment of the inventive concept may include forming a panel assembly, fixing the panel assembly, pressing the panel assembly, and separating the panel assembly, which will be explained in detail below.

[0067] like Figure 5 As shown in FIG, the resin RS may be formed on the metal plate MP.

[0068] The metal plate MP may transmit pressure to the display panel PNL. For example, tensile strain of the metal plate MP may be transmitted to the display panel PNL. The metal plate MP may have a rigidity similar to that of the display panel PNL.

[0069] In one embodiment, the metal plate MP may include a metal material. Examples of the metal material that may be used as the metal plate MP may include aluminum, magnesium, titanium, steel, and stainless steel (SUS).

[0070] The resin RS may be provided on the metal plate MP and may bond the metal plate MP to the display panel PNL. In an embodiment, the resin RS may be provided in a central portion of the metal plate MP and may be formed by an inkjet printing process.

[0071] The resin RS may transmit pressure from the metal plate MP to the display panel PNL. Accordingly, the resin RS may have a relatively high modulus. The resin may be a pressure sensitive adhesive PSA.

[0072] like Figure 6 As shown in FIG, the display panel PNL may be disposed on the resin RS. Accordingly, the display panel PNL may be laminated on the metal plate MP. For example, the metal plate MP and the display panel PNL may be bonded to each other using the resin RS. Accordingly, a pre-panel assembly PPAB1 including the metal plate MP, the resin RS, and the display panel PNL may be formed.

[0073] like Figure 7 As shown in FIG, the pre-panel assembly PPAB1 may be loaded into the manufacturing device MD. In one embodiment, the manufacturing device MD may include a fixing member FM and a pressing member PM.

[0074] In one embodiment, the fixing member FM may fix the pre-panel assembly PPAB 1. For example, the fixing member FM may be a clamp and may fix the outer portion of the metal panel MP.

[0075] like Figure 8 As shown in FIG. 1 , the pre-panel assembly PPAB1 can be bent.

[0076] In one embodiment, the pressing member PM can press the center portion of the pre-panel assembly PPAB1 from the bottom toward the top. For example, the pressing member PM can contact the metal plate MP. Furthermore, the pressing member PM can press the metal plate MP in a third direction D3, i.e., the thickness direction of the pre-panel assembly PPAB1. This third direction D3 is perpendicular to the first direction D1 and the second direction D2.

[0077] When the pressing member PM applies back pressure to the metal plate MP, tension may be generated in the metal plate MP. The tensile strain generated in the metal plate MP may be transmitted to the display panel PNL through the resin RS, and tension may also be generated in the display panel PNL. Accordingly, when the pressing member PM presses the center portion of the pre-panel assembly PPAB1, tension may be generated in the pre-panel assembly PPAB1, and a corner portion of the display panel PNL may be bent. In other words, the display panel PNL may have a bent portion at at least one corner portion. The metal plate MP may have a bent portion in an area corresponding to the bent portion of the display panel PNL.

[0078] like Figure 9 As shown in FIG, the panel assembly PAB1 may be separated from the manufacturing device MD. In addition, the outer portion of the metal plate MP that is not covered by the resin RE and the display panel PNL may be removed from the pre-panel assembly PPAB1.

[0079] In a method for manufacturing a display panel according to an embodiment of the present invention, the pre-panel assembly can be fixed and pressed from the bottom to the top. Accordingly, only tension can be generated in the pre-panel assembly. As a result, compressive deformation can be prevented from being applied to the corner portions, and defects such as buckling and wrinkling can be prevented from occurring in the corner portions having a three-dimensional curved shape.

[0080] Figures 10 to 14 is a diagram illustrating a method of manufacturing a display panel according to an embodiment of the inventive concept.

[0081] A method of manufacturing a display panel according to an embodiment of the inventive concept may include forming a panel assembly, fixing the panel assembly, pressing the panel assembly, and separating the panel assembly, which will be explained in detail below.

[0082] like Figure 10 As shown in FIG, a pressure sensitive adhesive PSA may be formed on a metal plate MP.

[0083] The metal plate MP may transmit pressure to the display panel PNL. For example, tensile strain of the metal plate MP may be transmitted to the display panel PNL. The metal plate MP may have a rigidity similar to that of the display panel PNL.

[0084] In one embodiment, the metal plate MP may include a metal material. Examples of the metal material that may be used as the metal plate MP may include aluminum, magnesium, titanium, steel, and stainless steel (SUS).

[0085] The pressure sensitive adhesive PSA may be provided on the metal plate MP and may adhere the metal plate MP to the display panel PNL. In an embodiment, the pressure sensitive adhesive PSA may be completely formed on top of the metal plate MP.

[0086] like Figure 11 As shown in FIG, the display panel PNL and the dummy portion DP can be disposed on a pressure-sensitive adhesive PSA. The dummy portion DP can be formed to surround the corner portion of the display panel PNL. Accordingly, the display panel PNL can be laminated to the metal plate MP. For example, the display panel PNL can be attached to the center portion of the metal plate MP, and the dummy portion DP can be attached to the outer portion of the metal plate MP. Accordingly, a pre-panel assembly PPAB2 including the metal plate MP, the pressure-sensitive adhesive PSA, the dummy portion DP, and the display panel PNL can be formed.

[0087] like Figure 12 As shown in FIG, the pre-panel assembly PPAB2 may be loaded into the manufacturing device MD. In one embodiment, the manufacturing device MD may include a fixing member FM and a pressing member PM.

[0088] In one embodiment, the fixing member FM may fix the pre-panel assembly PPAB2 to the manufacturing device MD. For example, the fixing member FM may be a clamp and may fix the outer portion and the dummy portion DP of the metal panel MP.

[0089] like Figure 13 As shown in FIG. 1 , the pre-panel assembly PPAB2 can be bent.

[0090] In one embodiment, the pressing member PM may press the center portion of the pre-panel assembly PPAB2 from the bottom to the top. For example, the pressing member PM may contact the metal plate MP. Furthermore, the pressing member PM may press the metal plate MP in the third direction D3.

[0091] When the pressing member PM applies back pressure to the metal plate MP, tension may be generated in the metal plate MP. The tensile strain generated in the metal plate MP may be transmitted to the display panel PNL via the pressure-sensitive adhesive PSA, and tension may also be generated in the display panel PNL. Accordingly, when the pressing member PM presses the center portion of the pre-panel assembly PPAB2, tension may be generated in the pre-panel assembly PPAB2, and a corner portion of the display panel PNL may be bent. In other words, the display panel PNL may have a bent portion at at least one corner portion. The metal plate MP may have a bent portion in an area corresponding to the bent portion of the display panel PNL.

[0092] In one embodiment, the dummy portion DP may improve the deformation difference between the metal plate MP and the display panel PNL according to the characteristics of the pressure sensitive adhesive PSA.

[0093] like Figure 14 , the panel assembly PAB2 may be separated from the manufacturing device MD. In addition, the outer portion of the metal plate MP and the dummy portion DP may be removed from the panel assembly PAB2.

[0094] Although certain embodiments and implementations have been described herein, other embodiments and variations will be apparent from this specification. Accordingly, the inventive concept is not limited to such embodiments, but rather to the broader scope of the appended claims and various obvious modifications and equivalent arrangements that are apparent to those skilled in the art.

Claims

1. A panel assembly comprising: Metal sheets; and a display panel provided on the metal plate and having a bent portion at at least one corner portion, The metal plate has a bent portion in a region corresponding to the bent portion of the display panel.

2. The panel assembly of claim 1, wherein the metal sheet comprises aluminum.

3. The panel assembly according to claim 1, further comprising: A resin is provided between the metal plate and the display panel and is used to bond the metal plate and the display panel together.

4. The panel assembly according to claim 1, further comprising: A pressure-sensitive adhesive is provided between the metal plate and the display panel and is used to bond the metal plate and the display panel. 5 . The panel assembly of claim 4 , wherein an edge of the metal plate, an edge of the display panel, and an edge of the pressure-sensitive adhesive are disposed along a straight line.

6. A display panel manufacturing device, comprising: A fixing member, used for fixing the panel assembly; and The pressing member is configured to press the central portion of the panel assembly from the bottom toward the top.

7. The manufacturing apparatus according to claim 6, wherein the panel assembly comprises: Metal sheets; and A display panel is provided on the metal plate and has a flexible property at at least one corner portion. 8 . The manufacturing apparatus according to claim 7 , wherein the fixing member is configured to fix an outer portion of the metal plate.

9. The manufacturing apparatus according to claim 7, wherein: When the pressing member presses the central portion of the panel assembly, the at least one corner portion of the display panel is bent.

10. The manufacturing apparatus according to claim 9, wherein: When the pressing member presses the central portion of the panel assembly, tension is generated in the panel assembly.

11. The manufacturing apparatus of claim 7, wherein the panel assembly further comprises: A resin is provided between the metal plate and the display panel and is used to bond the metal plate and the display panel together.

12. The manufacturing apparatus of claim 7, wherein the panel assembly further comprises: a pressure-sensitive adhesive disposed between the metal plate and the display panel and used to bond the metal plate and the display panel; and A dummy portion is disposed on the pressure-sensitive adhesive and surrounds the at least one corner portion of the display panel. 13 . The manufacturing apparatus according to claim 12 , wherein the fixing member is configured to fix the outer portion of the metal plate and the dummy portion.

14. A method for manufacturing a display panel, the method comprising: forming a panel assembly; securing the panel assembly to a manufacturing apparatus; as well as Press the center portion of the panel assembly from bottom to top.

15. The manufacturing method according to claim 14, wherein the panel assembly comprises: Metal sheets; and A display panel is provided on the metal plate and has a flexible property at at least one corner portion.

16. The manufacturing method according to claim 15, wherein: When the panel assembly is pressed by the pressing member of the manufacturing apparatus, the at least one corner portion of the display panel is bent.

17. The manufacturing method according to claim 16, wherein: When the panel assembly is pressed by the pressing member, tension is generated in the panel assembly.

18. The manufacturing method of claim 15, wherein an outer portion of the metal sheet is secured when the panel assembly is secured to the manufacturing device.

19. The manufacturing method according to claim 18, further comprising: After said pressing said central portion of said panel assembly, said outer portion is removed.

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