Methods for manufacturing display modules, terminals, and display modules

Abstract

This disclosure provides a display module, a terminal, and a method for manufacturing the display module. The display module includes: a display panel, comprising a planar portion and a curved portion; a polarizer, attached to the display surface of the planar portion; a surface energy modification layer located on the side of the polarizer; and a protective layer located on the same side of the display panel as the polarizer and in contact with the surface energy modification layer; the surface energy of the surface energy modification layer is less than the surface energy of the protective layer. This disclosure improves upon the problem of circuit cracks or breaks on the display panel caused by interference between the protective layer and the functional layer by introducing a surface energy modification layer.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and in particular to a display module, a terminal, and a method for manufacturing the display module. Background Technology

[0002] Generally, OLED (Organic Light-Emitting Diode) display panels in display modules have curved sections. To reduce circuit cracking caused by bending and ensure effective protection of the curved sections, a protective layer is applied. During the manufacturing process of the display module, the protective layer can easily interfere with the functional layer located above it, causing contact between the two layers. During drop and roll coating tests, stress concentration can easily occur at the contact point between the protective layer and the functional layer, leading to problems such as broken circuits and cracks in the display panel, thus damaging the panel. Summary of the Invention

[0003] This disclosure provides a display module, a terminal, and a method for manufacturing the display module.

[0004] According to a first aspect of the present disclosure, a display module is provided, the display module comprising:

[0005] The display panel includes a flat portion and a curved portion;

[0006] A polarizer is attached to the display surface of the planar portion;

[0007] A surface energy modification layer is located on the side of the polarizer;

[0008] A protective layer is located on the same side of the display panel as the polarizer and is in contact with the surface energy modification layer;

[0009] The surface energy of the surface energy modified layer is less than the surface energy of the protective layer.

[0010] In some embodiments, the surface energy modified layer includes a fluorinating agent.

[0011] In some embodiments, the display module further includes:

[0012] A transparent cover plate is located on the display surface of the planar portion;

[0013] Optical adhesive is placed between the transparent cover plate and the polarizer to fix the transparent cover plate and the polarizer.

[0014] In the thickness direction of the display module, the highest position of the surface energy modified layer is higher than or equal to the lowest position of the optical adhesive.

[0015] In some embodiments, the transparent cover includes:

[0016] The viewing window portion is located above the planar portion;

[0017] The non-window portion is located at the edge of the window portion and is located above at least part of the curved portion and the surface energy modification layer.

[0018] In some embodiments, the surface energy modified layer is in contact with the display panel, or there is a gap between the surface energy modified layer and the display panel.

[0019] In some embodiments, the side of the polarizer is an inclined surface that slopes downward from the center of the display panel toward the edge of the display panel, and the surface energy modification layer is an inclined layer with the same shape as the inclined surface.

[0020] According to a second aspect of the present disclosure, a terminal is provided, the terminal comprising:

[0021] case;

[0022] The display module described in the first aspect embodiment is mounted on the housing.

[0023] According to a third aspect of the present disclosure, a method for manufacturing a display module is provided, the method comprising:

[0024] A surface energy modification layer is formed on the side of the polarizer;

[0025] A polarizer is attached to the display surface of the display panel of the display module; wherein the display panel includes a flat portion and a curved portion, and the polarizer is located on the flat portion;

[0026] A protective layer is formed on the display panel and in contact with the surface energy modification layer; wherein the protective layer and the polarizer are located on the same side of the display panel, and the surface energy of the surface energy modification layer is less than the surface energy of the protective layer.

[0027] In some embodiments, forming a surface energy modification layer on the side of the polarizer includes:

[0028] A surface energy modification layer is formed on the side of a polarizer and on the side of a protective film located on the two surfaces of the polarizer, respectively; wherein the two surfaces of the polarizer are a first surface and a second surface, and the second surface is the opposite surface of the first surface;

[0029] The step of attaching the polarizer to the display surface of the display panel of the display module includes:

[0030] The protective film located on the first surface of the polarizer is separated from the polarizer.

[0031] In some embodiments, the manufacturing method further includes:

[0032] The protective film located on the second surface of the polarizer is separated from the polarizer;

[0033] An optical adhesive is formed on the second surface of the polarizer after the protective film is separated;

[0034] A transparent cover plate is attached to the optical adhesive; wherein, in the thickness direction of the display module, the highest position of the surface energy modified layer is higher than or equal to the lowest position of the optical adhesive.

[0035] In some embodiments, the manufacturing method further includes:

[0036] The side surface of the polarizer is formed into an inclined surface;

[0037] The formation of a surface energy modification layer on the side of the polarizer includes:

[0038] The surface energy modification layer is formed on the inclined surface, wherein the surface energy modification layer is an inclined layer with the same shape as the inclined surface.

[0039] In some embodiments, forming an inclined surface on the side of the polarizer includes:

[0040] The inclined surface is formed on the side of the polarizer by a cutting process.

[0041] In some embodiments, forming the surface energy modification layer on the side of the polarizer includes:

[0042] The side surfaces of the polarizer and the protective film are immersed in a surface energy modification solution to form the surface energy modification layer; and / or,

[0043] A surface modification solution is coated on the side of the polarizer and the side of the protective film to form the surface energy modification layer.

[0044] In some embodiments, before forming the surface energy modification layer on the side of the polarizer and the side of the protective film located on the two surfaces of the polarizer, the fabrication method includes:

[0045] At least two of the polarizers are stacked; wherein the protective film is connected to two surfaces of each polarizer.

[0046] In some embodiments, the manufacturing method further includes:

[0047] The display panel is attached to the support plate;

[0048] After forming the protective layer on the display panel, the manufacturing method further includes:

[0049] Separate the support plate from the display panel;

[0050] The display panel is bent to form the planar portion and the bent portion.

[0051] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0052] As can be seen from the above embodiments, this disclosure presents a surface energy modification layer formed on the side of the polarizer. The surface energy of the surface energy modification layer is lower than that of the protective layer, which reduces the wettability of the protective layer on the polarizer. This reduces the interference of excessively high bumps formed by the protective layer at the edge of the polarizer due to its good wettability on the polarizer with the functional layer located above the protective layer. This technical solution of introducing a surface energy modification layer improves the problems of circuit cracks or breaks on the display panel caused by interference between the protective layer and the functional layer, effectively reduces the damage to the display panel caused by the display module during drop tests, roll coating tests, etc., and improves the drop resistance of the display module.

[0053] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0054] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0055] Figure 1 This is one of the schematic diagrams of a partial structure of a display module;

[0056] Figure 2 This is the second partial structural diagram of a display module;

[0057] Figure 3 This is one of the structural diagrams of a display module during its manufacturing process;

[0058] Figure 4 This is the second structural diagram of a display module during its manufacturing process;

[0059] Figure 5 This is a partial structural schematic diagram of a display module according to an exemplary embodiment;

[0060] Figure 6 This is one of the structural schematic diagrams illustrating the manufacturing process of a display module according to an exemplary embodiment;

[0061] Figure 7 This is a second structural schematic diagram illustrating the manufacturing process of a display module according to an exemplary embodiment;

[0062] Figure 8 This is one of the flowcharts illustrating a method for manufacturing a display module according to an exemplary embodiment;

[0063] Figure 9 This is a second flowchart illustrating a method for manufacturing a display module according to an exemplary embodiment;

[0064] Figure 10 This is one of the schematic diagrams illustrating the process of forming a protective layer according to an exemplary embodiment;

[0065] Figure 11 This is a second schematic diagram illustrating the process of forming a protective layer according to an exemplary embodiment. Detailed Implementation

[0066] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses consistent with some aspects of this disclosure as detailed in the appended claims.

[0067] A first aspect of the present invention provides a display module, such as... Figure 5 As shown, the display module includes:

[0068] Display panel 110 includes a flat portion 111 and a curved portion 112;

[0069] A polarizer 120 is attached to the display surface of the planar portion 111;

[0070] A surface energy modification layer 140 is located on the side of the polarizer 120;

[0071] The protective layer 130 is located on the same side of the display panel 110 as the polarizer 120 and is in contact with the surface energy modification layer 140;

[0072] The surface energy of the surface energy modified layer 140 is less than the surface energy of the protective layer 130.

[0073] Unrestricted, the protective layer may include photosensitive adhesive. For example, the protective layer may be a UV (Ultraviolet) adhesive, which is liquid during the formation of the protective layer and forms a solid layered structure after curing.

[0074] like Figure 1and Figure 2 As shown, the functional layer uses optically clear adhesive (OCA) as an example. When designing the display module, in a direction parallel to the display panel 10, there is a certain spacing 50 between the optically clear adhesive 40 and the protective layer 20, for example, as... Figure 1 As shown, the spacing 50 between the optical adhesive 40 and the protective layer 20 is approximately 0.1 mm. However, in actual manufacturing, due to the dimensional tolerances of the optical adhesive 40 (approximately 0.05 mm), the assembly position tolerances of the optical adhesive 40 (approximately 0.1 mm), the adhesion tolerances of the polarizer 30 (approximately 0.1 mm), and the excess adhesive tolerances of the optical adhesive 40 (approximately 0.05 mm), these tolerances accumulate, causing the spacing 50 between the optical adhesive 40 and the protective layer 20 to disappear in the direction parallel to the display panel 10. The optical adhesive 40 will extend beyond the contact point between the protective layer 20 and the polarizer 30. Figure 2 As shown, the optical adhesive 40 is located above the contact point between the protective layer 20 and the polarizer 30. If no surface energy modification layer is introduced, such as... Figures 1 to 4 As shown, where, Figure 4 To remove Figure 3 A schematic diagram of the display module after the protective film 31 on the intermediate polarizer 30 during the manufacturing process. Because the surface energy of the polarizer 30 is higher than that of the protective layer 20, during the formation of the protective layer 20, due to capillary effect, the liquid protective layer 20 will climb onto the polarizer 30. Consequently, a portion of the cured protective layer 20 will exceed the height of the polarizer 30, forming excessively high bumps 21. These bumps 21 will interfere with the optical adhesive 40 located above the protective layer 20. Stress concentration is easily caused at the interference point 60, leading to cracks in the circuitry of the display panel 20.

[0075] Therefore, in this embodiment, by forming a surface energy modification layer 140 on the side of the polarizer 120, the surface energy of the surface energy modification layer 140 is lower than that of the protective layer 130. This reduces the wettability of the protective layer 130 on the polarizer 120, and reduces the interference of excessively high bumps formed by the protective layer 130 at the edge of the polarizer 120 with the functional layer above the protective layer 130 due to the good wettability of the protective layer 130 on the polarizer 120. This technical solution of introducing the surface energy modification layer 140 improves the problems of circuit cracks or breaks on the display panel 110 caused by the interference between the protective layer 130 and the functional layer, effectively reduces the damage to the display panel 110 caused by the display module during drop and roll coating tests, improves the drop resistance of the display module, and reduces the probability of vertical line defects when the display module is dropped or impacted.

[0076] like Figure 5As shown, the surface energy modification layer 140 is located between the polarizer 120 and the protective layer 130. The surface energy modification layer 140 is located on one side of the polarizer 120, that is, the surface energy modification layer 140 can be formed only on one side of the polarizer 120.

[0077] In this embodiment of the disclosure, the polarizer 120 (POL) is used to control the polarization direction of the light beam from the display panel 110 (Panel) to ensure the display effect of the display panel 110.

[0078] In a specific example, such as Figure 5 As shown, the display module also includes a back plane 170 (BP), a super clean foam (SCF) layer 180, and a stifer (STF) layer 190. The back plane 170 is located on the non-display surface of the display panel 110, and is present on both the flat portion 111 and the curved portion 112. The foam layer 180 and the stifer layer 190 are both located between the two back plans 170, with the foam layer 180 situated between the stifer layer 190 and the back plane 170 mounted on the flat portion 111. The back plane 170, the foam layer 180, and the stifer layer 190 all provide support for the display panel 110.

[0079] In some embodiments, the display panel 110 includes a flexible display panel 110. For example, the display panel 110 is a flexible OLED display panel 110.

[0080] In some other alternative embodiments, the surface energy modified layer 140 includes a fluorinating agent.

[0081] In addition to using a fluorine-containing low surface energy component, the surface energy modification layer 140 may also include a silicon-containing low surface energy component, or a low surface energy component containing both silicon and fluorine. For example, the surface energy modification layer 140 includes siloxanes, silanes, etc.

[0082] In some other alternative embodiments, the display module further includes:

[0083] A transparent cover plate 160 is located on the display surface of the planar portion 111;

[0084] Optical adhesive 150 is located between the transparent cover plate 160 and the polarizer 120 to fix the transparent cover plate 160 and the polarizer 120.

[0085] The surface energy modified layer 140 is located between the optical adhesive 150 and the display panel 110.

[0086] In this embodiment of the disclosure, by introducing a surface energy modification layer 140, the contact interference between the optical adhesive 150 and the protective layer 130 is reduced in the direction perpendicular to the display panel 110, that is, in the thickness direction of the display module.

[0087] The optical adhesive 150 is also light-transmitting, so that the light from the display panel 110 can pass through the optical adhesive 150 and the transparent cover plate 160, thus ensuring the display effect of the display panel 110.

[0088] Without limitation, the transparent cover 160 includes transparent glass (CG).

[0089] In some other alternative embodiments, in the thickness direction of the display module, the highest position of the surface energy modified layer 140 is higher than or equal to the lowest position of the optical adhesive 150.

[0090] like Figure 5 As shown, the highest position of the surface energy modified layer 140 is higher than or equal to the lowest position of the optical adhesive 150, ensuring that the side of the polarizer 120 near the top of the optical adhesive 150 is covered by the surface energy modified layer 140. There is no gap between the surface energy modified layer 140 and the optical adhesive 150, thereby further suppressing the protective layer 130 from crossing the top of the polarizer 120 and effectively reducing the possibility of interference.

[0091] In some other alternative embodiments, the transparent cover 160 includes:

[0092] The viewing window portion 161 is located above the planar portion 111;

[0093] The non-window portion 162 is located at the edge of the window portion 161 and is located above at least part of the curved portion 112 and the surface energy modification layer 140.

[0094] The window portion 161 corresponds to the display surface of the display panel 110 and is translucent. The non-window portion 162 is located at the edge of the window portion 161, is not translucent, and has a blocking effect on the curved portion 112, while also reducing light leakage at the edge of the display panel 110.

[0095] like Figure 5 As shown, the surface energy modification layer 140 is located below the non-viewing window portion 162, and the junctions of the surface energy modification layer 140, the polarizer 120, and the protective layer 130 can be blocked, thereby ensuring the integrity of the viewing window portion 161.

[0096] In practical applications, such as Figure 5 As shown, a screen printing layer 163 can be formed on the edge of the transparent cover plate 160, and the non-viewing window portion 162 can be formed using the screen printing layer 163.

[0097] In some other alternative embodiments, the surface energy modified layer 140 is in contact with the display panel 110, or there is a gap between the surface energy modified layer 140 and the display panel 110.

[0098] Interference caused by the protective layer 130 occurs at the top away from the display panel 110, while there is no interference problem near the bottom of the display panel 110. Therefore, the surface energy modification layer 140 can contact the display panel 110 or extend downward to the display panel 110, that is, the surface energy modification layer 140 and the display panel 110 are spaced apart. This structure helps to save the amount of surface energy modification layer 140 while ensuring reduced interference and reduced circuit damage on the display panel 110.

[0099] In some other alternative embodiments, the protective layer 130 is located on the curved portion 112, and the surface energy modification layer 140 is located between the planar portion 111 and the curved portion 112; or,

[0100] The protective layer 130 is located on the curved portion 112 and part of the planar portion 111, and the surface energy modification layer 140 is located on the planar portion 111.

[0101] Figure 5 An exemplary display module is shown with the surface energy modification layer 140 located on the planar portion 111. When the surface energy modification layer 140 is located on the planar portion 111, the protective layer 130 has a larger distribution area and is closer to the center of the display panel 110, which is beneficial to further improve the protective effect of the protective layer 130 on the curved portion 112.

[0102] In some other alternative embodiments, the side of the polarizer 120 is an inclined surface 123 that slopes downward from the center of the display panel 110 toward the edge of the display panel 110, and the surface energy modification layer 140 is an inclined layer with the same shape as the inclined surface 123.

[0103] Figure 7 A partial structural schematic diagram of a display module with a polarizer 120 having a sloping surface 123 on one side is shown as an example. The surface energy modification layer 140 has the same sloping direction as the sloping surface 123.

[0104] and Figure 5 and Figure 6 Compared to polarizer 120, Figure 7The polarizer 120 has an inclined side surface, which increases the side area and thus increases the possibility of the protective layer 130 forming excessive bumps on the polarizer 120. This further reduces the risk of cracks or breaks in the circuitry of the display panel 110 due to interference from the protective layer 130.

[0105] like Figure 7 As shown, the tilt angle α of the inclined surface 123 can be 10 to 80°. For example, the tilt angle α can be any one or any two of 30°, 40°, 45°, 50° or 60°.

[0106] In some other alternative embodiments, the bent portion 112 includes:

[0107] A connection area 1122 is located on the non-display surface of the planar portion 111; wherein the non-display surface is the opposite surface of the display surface;

[0108] The bending area 1121 is located between the connecting area 1122 and the planar portion 111, and connects the connecting area 1122 and the planar portion 111 respectively;

[0109] The display module also includes:

[0110] The control chip is electrically connected to the connection area 1122.

[0111] like Figure 5 As shown, the connecting area 1122 is generally planar and roughly parallel to the planar portion 111, while the bending area 1121 is curved. Through the bending of the bending area 1121, the connecting area 1122 does not need to extend in a direction parallel to the display panel 110, but rather extends in the thickness direction of the display module. Since the connecting area 1122's function is to connect control chips or FPC (Flexible Printed Circuit) devices and it does not have a display function, this structure is beneficial for increasing the screen-to-body ratio of the display module.

[0112] A second aspect of this disclosure provides a terminal, the terminal comprising: a housing; and a display module as described in the first aspect embodiment, the display module being mounted on the housing.

[0113] Terminals include, but are not limited to: mobile phones, televisions, tablets, laptops, monitors, or wearable devices.

[0114] like Figure 8 As shown, a third aspect of this disclosure provides a method for manufacturing a display module as described in the first aspect embodiment, the method comprising:

[0115] Step S110: Form a surface energy modification layer on the side of the polarizer;

[0116] Step S120: Attach the polarizer to the display surface of the display panel of the display module; wherein the display panel includes a planar portion and a curved portion, and the polarizer is located on the planar portion;

[0117] Step S130: A protective layer is formed on the display panel and in contact with the surface energy modification layer; wherein the protective layer and the polarizer are located on the same side of the display panel, and the surface energy of the surface energy modification layer is less than the surface energy of the protective layer.

[0118] In step S110, a surface energy modification layer may be formed only on one side of the polarizer. Methods for forming the surface energy modification layer include, but are not limited to, dip coating, roller coating, brush coating, or spray coating.

[0119] In step S120, the polarizer (POL) is used to control the polarization direction of the light beam from the display panel to ensure the display effect of the display panel.

[0120] In step S130, the polarizer, the surface energy modification layer, and the protective layer are all located on the same side of the display panel, and the surface energy modification layer is located between the polarizer and the protective layer.

[0121] In this embodiment of the disclosure, the display panel includes, but is not limited to, a flexible display panel.

[0122] By forming a surface energy modification layer on the side of the polarizer, the surface energy of the modified layer is lower than that of the protective layer. This reduces the wettability of the protective layer on the polarizer and minimizes the interference of excessively high bumps formed by the protective layer at the edge of the polarizer due to its good wettability with the polarizer, thus reducing interference with the functional layer located above the protective layer. This technical solution, which introduces a surface energy modification layer, improves problems such as circuit cracks or breaks on the display panel caused by interference between the protective layer and the functional layer. It effectively reduces damage to the display panel during drop tests and roll coating tests, and improves the drop resistance of the display module.

[0123] In some other alternative embodiments, forming a surface energy modification layer on the side of the polarizer includes:

[0124] A surface energy modification layer 140 is formed on the side of a polarizer 120 and on the side of a protective film 121 located on two surfaces of the polarizer 120, respectively; wherein the two surfaces of the polarizer 120 are a first surface and a second surface, and the second surface is the opposite surface of the first surface.

[0125] The step of attaching the polarizer 120 to the display surface of the display panel 110 of the display module includes:

[0126] The protective film 121 located on the first surface of the polarizer 120 is separated from the polarizer 120.

[0127] In practical applications, such as Figure 10 and Figure 11 As shown, coating the polarizer 120 and the protective film 121 with the surface energy modification layer 140 at the same time not only facilitates the coating of the surface energy modification layer 140, but also helps to reduce the contamination of other parts of the polarizer 120 that do not need to be coated with the surface energy modification layer 140 during the coating process.

[0128] In some other alternative embodiments, the manufacturing method further includes:

[0129] Separate the protective film 121 located on the second surface of the polarizer 120 from the polarizer 120;

[0130] An optical adhesive 150 is formed on the second surface of the polarizer 120 after the protective film 121 is separated;

[0131] A transparent cover plate 160 is attached to the optical adhesive 150; wherein, in the thickness direction of the display module, the highest position of the surface energy modified layer 140 is higher than or equal to the lowest position of the optical adhesive 150.

[0132] The optical adhesive is also translucent, allowing light from the display panel to pass through the optical adhesive and the transparent cover, thus ensuring the display effect of the display panel.

[0133] In a non-limiting sense, transparent covers include transparent glass (CG).

[0134] In some other alternative embodiments, the manufacturing method further includes:

[0135] The side surface of the polarizer is formed into an inclined surface;

[0136] The formation of a surface energy modification layer on the side of the polarizer includes:

[0137] The surface energy modification layer is formed on the inclined surface, wherein the surface energy modification layer is an inclined layer with the same shape as the inclined surface.

[0138] Figure 7 A partial structural schematic diagram of a display module with a polarizer side surface 123 is shown as an example. The surface energy modification layer 140 has the same tilt direction as the tilt surface 123.

[0139] and Figure 5 and Figure 6 Compared to polarizers in the middle, Figure 7The polarizer in the middle is inclined surface 123, which increases the side area and thus increases the possibility of the protective layer 130 forming excessive bumps on the polarizer 120, further reducing the risk of cracks or breaks in the circuit of the display panel 110 due to interference from the protective layer 130.

[0140] Non-limitingly, the inclined surface of the polarizer can be formed by a cutting process. In some other alternative embodiments, forming the surface energy modification layer on the side of the polarizer includes:

[0141] The side surfaces of the polarizer and the protective film are immersed in a surface energy modification solution to form the surface energy modification layer; and / or,

[0142] A surface modification solution is coated on the side of the polarizer and the side of the protective film to form the surface energy modification layer.

[0143] It is understandable that the surface energy modification solution is the surface energy modification layer before film formation. That is, the surface energy modification solution is formed on the side of the polarizer through methods such as dip coating or roller coating, and a surface energy modification layer is formed after film formation. The surface energy modification solution includes fluorinating agents.

[0144] In comparison, the surface energy modified layer formed by immersion in a surface energy modified solution has stable quality. Furthermore, coating methods such as roller coating or brush coating can save on the surface energy modified layer, which is beneficial for cost reduction.

[0145] In some other alternative embodiments, before forming the surface energy modification layer on the side of the polarizer and the side of the protective film located on the two surfaces of the polarizer, the fabrication method includes:

[0146] At least two of the polarizers are stacked; wherein the protective film is connected to two surfaces of each polarizer.

[0147] Simultaneously, a surface energy modification layer is formed on at least two stacked polarizers, which improves the efficiency of forming the surface energy modification layer.

[0148] In some embodiments, such as Figure 10 As shown, a surface energy modified layer is formed by dip coating. Several POLs and protective films 121 of POLs are stacked and immersed in a container containing fluorinating agent 300. The entire edge of the POLs and protective film 121 is immersed in fluorinating agent 300. This method has high yield and stable effect.

[0149] In some embodiments, such as Figure 11As shown, a surface energy modified layer is formed using a roller coating method. Several layers of POL and POL protective film 121 are stacked together, and then the edges of the POL and POL protective film 121 are brushed 2-3 times with a roller 400 containing a fluorinating agent. This method helps to save fluorinating agent and has a lower cost.

[0150] In some other alternative embodiments, the manufacturing method further includes:

[0151] A control chip is electrically connected to the curved portion;

[0152] The curved portion includes:

[0153] A connection area is located on the non-display surface of the planar portion, and the control chip is located in the connection area;

[0154] The bending area is located between the connecting area and the planar portion, connecting the connecting area and the planar portion respectively.

[0155] like Figure 5 As shown, the connecting area is roughly planar and parallel to the planar portion, while the bending area is curved. By bending the bending area, the connecting area does not need to extend in a direction parallel to the display panel, but rather in the thickness direction of the display module. Since the connecting area's function is to connect control chips or FPC (Flexible Printed Circuit) devices and does not have a display function, this structure helps to increase the screen-to-body ratio of the display module.

[0156] In some other alternative embodiments, the manufacturing method further includes:

[0157] The display panel is attached to the support plate;

[0158] After forming the protective layer on the display panel, the manufacturing method further includes:

[0159] Separate the support plate from the display panel;

[0160] The display panel is bent to form the planar portion and the bent portion.

[0161] like Figure 6 and Figure 7 As shown, the support plate is used to support the display panel, which facilitates the formation of the protective layer and polarizer.

[0162] To ensure effective support, the support plate is generally made of a non-flexible material. Alternatively, the support plate can be made of glass or ceramic.

[0163] In a specific example, such as Figure 9As shown, the manufacturing method of the display module includes: Step S211, laser cutting to form a display panel, wherein the display panel is located on a glass plate (i.e., a support plate); Step S212, cell aging test, placing the display panel in an aging environment; Step S213, starting testing (CT, Cell Test); Step S214, performing display point testing (DOT Test); Step S215, cutting off the pins connected to the display panel during the test; Step S216, forming a fluorinated agent on the polarizer; Step S217, bonding the polarizer (POL Lami (i.e., Lamination)), bonding the polarizer with the fluorinated agent onto the display panel; Step S218, preparing to form UV adhesive (i.e., optical adhesive) on the display panel; Step S219, starting to apply optical adhesive to the corresponding bent MLC portion of the display panel; Step S220, laser lift-off (LLO, Laser) Step S221: Separate the glass plate from the display panel using a lift-off method; Step S222: Attach the backplate (BP Lami); Step S223: Connect the control chip (IC boning) to the connection area of ​​the display panel; Step S224: Connect the flexible circuit board (FPC boning) to the connection area of ​​the display panel; Step S225: Perform module testing and display testing on the display module (MT1 (Modual Test) + DOT test); Step S226: Cut the display panel again to form holes (2nd Cutting + O-cut); Step S27: Attach the transparent cover plate (CG Lami) to the optical adhesive. In this example, by coating the edge of the POL with a fluorinated agent, the surface energy of the POL is reduced. This prevents the UV adhesive from wetting the POL at its edge, thus reducing the interference between OCA and UV, which helps to reduce the probability of vertical line defects in the event of a drop or collision of the display module.

[0164] In practical applications, refer to Figure 9 As shown, except for coating the edges of the POL with a fluorinating agent before POL Lami, the remaining steps can remain consistent with the existing display module manufacturing process, reducing the need for excessive special design and modification of existing display module industrial production lines, making it more convenient.

[0165] The methods disclosed in the several method embodiments provided in this disclosure can be arbitrarily combined without conflict to obtain new method embodiments.

[0166] The features disclosed in the several product embodiments provided in this disclosure can be combined arbitrarily without conflict to obtain new product embodiments.

[0167] The features disclosed in the several method or product embodiments provided in this disclosure can be arbitrarily combined without conflict to obtain new method embodiments or product embodiments.

[0168] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0169] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A display module, characterized in that, The display module includes: The display panel includes a flat portion and a curved portion; A polarizer is attached to the display surface of the planar portion; A surface energy modification layer is located on the side of the polarizer; A protective layer is located on the same side of the display panel as the polarizer and is in contact with the surface energy modification layer; the protective layer includes photosensitive adhesive; The surface energy modification layer is located between the polarizer and the protective layer, and the surface energy of the surface energy modification layer is less than the surface energy of the protective layer. A transparent cover plate is located on the display surface of the planar portion; Optical adhesive is placed between the transparent cover plate and the polarizer to fix the transparent cover plate and the polarizer. In the thickness direction of the display module, the highest position of the surface energy modified layer is higher than or equal to the lowest position of the optical adhesive, which is used to prevent the protective layer from passing over the side of the polarizer and approaching the top of the optical adhesive.

2. The display module according to claim 1, characterized in that, The surface energy modified layer includes a fluorinating agent.

3. The display module according to claim 1, characterized in that, The transparent cover plate includes: The viewing window portion is located above the planar portion; The non-window portion is located at the edge of the window portion and is located above at least part of the curved portion and the surface energy modification layer.

4. The display module according to claim 1, characterized in that, The surface energy modified layer is in contact with the display panel, or there is a gap between the surface energy modified layer and the display panel.

5. The display module according to claim 1, characterized in that, The side of the polarizer is an inclined surface that slopes downward from the center of the display panel toward the edge of the display panel, and the surface energy modification layer is an inclined layer with the same shape as the inclined surface.

6. A terminal, characterized in that, The terminal includes: case; The display module according to any one of claims 1 to 5 is mounted on the housing.

7. A method for manufacturing a display module as described in any one of claims 1 to 5, characterized in that, The manufacturing method includes: A surface energy modification layer is formed on the side of the polarizer; A polarizer is attached to the display surface of the display panel of the display module; wherein the display panel includes a flat portion and a curved portion, and the polarizer is located on the flat portion; A protective layer is formed on the display panel and in contact with the surface energy modification layer; wherein the protective layer and the polarizer are located on the same side of the display panel, and the protective layer includes photosensitive adhesive; The surface energy modification layer is located between the polarizer and the protective layer, and the surface energy of the surface energy modification layer is less than the surface energy of the protective layer. The manufacturing method further includes: The protective film located on the second surface of the polarizer is separated from the polarizer; An optical adhesive is formed on the second surface of the polarizer after the protective film is separated; A transparent cover plate is attached to the optical adhesive; wherein, in the thickness direction of the display module, the highest position of the surface energy modified layer is higher than or equal to the lowest position of the optical adhesive, which is used to prevent the protective layer from passing over the side of the polarizer and approaching the top of the optical adhesive.

8. The manufacturing method according to claim 7, characterized in that, The formation of a surface energy modification layer on the side of the polarizer includes: A surface energy modification layer is formed on the side of a polarizer and on the side of a protective film located on the two surfaces of the polarizer, respectively; wherein the two surfaces of the polarizer are a first surface and a second surface, and the second surface is the opposite side of the first surface; The step of attaching the polarizer to the display surface of the display panel of the display module includes: The protective film located on the first surface of the polarizer is separated from the polarizer.

9. The manufacturing method according to claim 7, characterized in that, The manufacturing method further includes: The side surface of the polarizer is formed into an inclined surface; The formation of a surface energy modification layer on the side of the polarizer includes: The surface energy modification layer is formed on the inclined surface, wherein the surface energy modification layer is an inclined layer with the same shape as the inclined surface.

10. The manufacturing method according to claim 9, characterized in that, The step of forming an inclined surface on the side of the polarizer includes: The inclined surface is formed on the side of the polarizer by a cutting process.

11. The manufacturing method according to claim 8, characterized in that, The method of forming a surface energy modified layer on the side of the polarizer includes: The side surfaces of the polarizer and the protective film are immersed in a surface energy modification solution to form the surface energy modification layer; and / or, A surface modification solution is coated on the side of the polarizer and the side of the protective film to form the surface energy modification layer.

12. The manufacturing method according to claim 8 or 11, characterized in that, Before forming the surface energy modification layer on the side of the polarizer and the side of the protective film located on the two surfaces of the polarizer, the manufacturing method includes: At least two of the polarizers are stacked; wherein the protective film is connected to two surfaces of each polarizer.

13. The manufacturing method according to claim 7, characterized in that, The manufacturing method further includes: The display panel is attached to the support plate; After forming the protective layer on the display panel, the manufacturing method further includes: Separate the support plate from the display panel; The display panel is bent to form the planar portion and the bent portion.

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