Display module, manufacturing method thereof and display device

Abstract

Disclosed are a display module and a manufacturing method thereof, and a display device. The display module comprises: a flexible display panel, the flexible display panel comprising: a screen part, a binding part, and a connecting part connected between the two, the connecting part being in a curved state, and the binding part being located on the backlight side of the screen part; the screen part comprising a display area; a light-shielding protective layer, the protective layer covering the connecting part; an anti-reflection layer, the anti-reflection layer being arranged on the light-emitting side of the screen part; a cover plate, the cover plate being arranged on the side of the anti-reflection layer away from the screen part, the cover plate comprising a light-transmitting area and a light-shielding area; the light-transmitting area comprising a first edge close to the light-shielding area and extending along the bending axis direction of the connecting part; wherein the orthographic projection of the display area on the cover plate is located within the range of the light-transmitting area, and the anti-reflection layer comprises a second edge close to the connecting part, and the orthographic projection of the second edge on the cover plate is located on the side of the first edge away from the light-shielding area.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of display, in particular to a display module, a manufacturing method thereof and a display device. BACKGROUND

[0002] At present, the intelligent terminal with AMOLED (Active-matrix organic light emitting diode) flexible display module is more and more popular in daily life, and the market requires its performance more and more strictly. Among them, the appearance of the aesthetic is one of the most concerned aspects. In addition, with the gradual development of its manufacturing industry, manufacturers also pursue lower cost and higher yield.

[0003] In the flexible display module, the design of the lower frame of the panel has undergone a revolutionary change due to its own bendability, so that the flexible display module can achieve a narrower frame design. SUMMARY

[0004] In a first aspect, the present disclosure provides a display module, comprising:

[0005] a flexible display panel, the flexible display panel comprising a screen part, a binding part and a connecting part connected between the two, the connecting part being in a curved state, the binding part being located on the backlight side of the screen part; the screen part comprising a display area;

[0006] a light-shielding protective layer covering the connecting part;

[0007] an anti-reflection layer arranged on the light-out side of the screen part;

[0008] a cover plate arranged on the side of the anti-reflection layer away from the screen part, the cover plate comprising a light-transmitting area and a light-shielding area; the light-transmitting area comprising a first edge close to the light-shielding area and extending along the bending axis direction of the connecting part;

[0009] wherein the orthographic projection of the display area on the cover plate is located within the range of the light-transmitting area, the anti-reflection layer comprises a second edge close to the connecting part, and the orthographic projection of the second edge on the cover plate is located on the side of the first edge away from the light-shielding area.

[0010] In some embodiments, the display area comprises a third edge close to the connecting part, and the orthographic projection of the second edge on the screen part is located on the side of the third edge close to the connecting part.

[0011] In some embodiments, the spacing between the orthographic projection of the second edge on the screen part and the third edge is equal to the absolute value of the fitting tolerance of the anti-reflection layer.

[0012] In some embodiments, the distance between the normal projection of the second edge on the screen portion and the third edge is between 0.05-0.1mm.

[0013] In some embodiments, the distance between the normal projection of the third edge on the cover plate and the first edge is between 0.13-0.23mm.

[0014] In some embodiments, the second edge of the anti-reflection layer is in contact with the protective layer.

[0015] In some embodiments, the display module further comprises:

[0016] a bonding layer bonded between the cover plate and the anti-reflection layer;

[0017] a first back film disposed on a side of the screen portion facing the binding portion;

[0018] a heat dissipation layer disposed on a side of the first back film facing the binding portion;

[0019] a support layer disposed on a side of the heat dissipation layer facing the binding portion;

[0020] a second back film disposed between the support layer and the binding portion.

[0021] In some embodiments, the protective layer comprises: a first part covering the connecting portion, a second part on a surface of the screen portion away from the binding portion, and a third part on a surface of the binding portion away from the screen portion.

[0022] wherein the first back film and the second part overlap in the thickness direction of the display module, and the second back film and the third part overlap in the thickness direction of the display module.

[0023] In some embodiments, the anti-reflection layer comprises a circular polarizer.

[0024] In a second aspect, the present disclosure provides a display device comprising the display module described above.

[0025] In a third aspect, the present disclosure provides a manufacturing method of a display module, comprising:

[0026] providing a flexible display panel, the flexible display panel comprising: a screen portion, a binding portion, and a connecting portion connected therebetween;

[0027] forming an anti-reflection layer on the light-out side of the screen portion;

[0028] forming a light-shielding protective layer covering the connecting portion;

[0029] bending the connecting portion so that the binding portion is located at the backlight side of the screen portion, the connecting portion being in a bent state;

[0030] forming a cover plate on the side of the anti-reflection layer away from the screen portion, the cover plate comprising a light-transmitting region and a light-blocking region; the light-transmitting region comprising a first edge close to the light-blocking region and extending along the bending axis direction of the connecting portion;

[0031] wherein the orthographic projection of the display region on the cover plate is located within the range of the light-transmitting region, the anti-reflection layer comprising a second edge close to the connecting portion, the orthographic projection of the second edge on the cover plate being located on the side of the first edge away from the light-blocking region.

[0032] In some embodiments, the step of forming a light-blocking protective layer covering the connecting portion comprises:

[0033] applying a gel on the flexible display panel, the gel covering the connecting portion;

[0034] curing the gel to form a light-blocking protective layer.

[0035] In some embodiments, the step of applying a gel layer on the flexible display panel further comprises:

[0036] defoaming the gel.

[0037] In some embodiments, the gel applied on the flexible display panel is black light-proof gel.

[0038] In some embodiments, the step of applying a gel layer on the flexible display panel further comprises: doping gel particles coated with a dyeing agent into the light-transmitting gel;

[0039] the step of curing the gel comprises: irradiating ultraviolet light on the gel to cure the gel and break the shell of the gel particles, the dyeing agent mixing with the light-transmitting gel to form black light-proof gel. BRIEF DESCRIPTION OF DRAWINGS

[0040] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, illustrate embodiments of the present disclosure and together with the specific description below serve to explain the present disclosure but do not limit the present disclosure. In the drawings:

[0041] Figure 1 is a plan view of the display module provided in one example.

[0042] Figure 2 is a sectional view of the partial structure along Figure 1 A-A’ in the middle.

[0043] Figure 3 The principle diagram of light leakage for a narrow-frame display module.

[0044] Figure 4 The principle diagram of light leakage for a display module with a wider frame.

[0045] Figure 5 The light path diagram in the critical case of light leakage for a display module.

[0046] Figure 6 The schematic diagram of a display module provided in some embodiments of the present disclosure.

[0047] Figure 7 The edge position of each area in the display module shown. Figure 6

[0048] Figure 8 The plan view of the connection part in the flat state and the curved state provided in some embodiments of the present disclosure.

[0049] Figures 9 to 16 The flow chart of the manufacturing method of the display module provided in Example 1.

[0050] Figures 17 to 20 The flow chart of the manufacturing method of the display module provided in Example 2.

[0051] Figure 21 The schematic diagram of the change process of the colloid after being irradiated by light. DETAILED DESCRIPTION

[0052] The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0053] To make the purposes, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of, rather than all of, the embodiments of the present disclosure. Based on the described embodiments of the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without any creative effort fall within the protection scope of the present disclosure.

[0054] ​Unless otherwise defined, technical terms or scientific terms used in the present disclosure shall have the meanings as commonly understood by one of ordinary skill in the art to which this present disclosure belongs. The terms "first", "second", and similar terms do not imply any order, quantity, or importance, but are used to distinguish one element from another. Also, the terms "include" or "comprise" or the like used in the present disclosure mean to encompass the elements listed after such terms and their equivalents, and do not exclude other elements. The terms "connected" or "linked" or the like used in the present disclosure do not mean to be necessarily physically or mechanically connected, but can include electrical connection, whether direct or indirect. The terms "upper", "lower", "left", "right", and the like are used only to indicate relative positions, and when the absolute positions of the described objects are changed, the relative positions can also be changed accordingly.

[0055] As used herein, "parallel", "perpendicular" include the recited case and a case similar to the recited case within an acceptable deviation range, wherein the acceptable deviation range is determined by a person of ordinary skill in the art considering the measurement being discussed and the error related to the measurement of a specific amount (i.e., the limitation of the measurement system). For example, "parallel" includes absolute parallel and approximately parallel, wherein the acceptable deviation range of approximately parallel may, for example, be within 5°; "perpendicular" includes absolute perpendicular and approximately perpendicular, wherein the acceptable deviation range of approximately perpendicular may, for example, also be within 5°.

[0056] It should be understood that when a layer or element is referred to as being "on" another layer or substrate, it can be directly on the other layer or substrate, or intervening layers can also be present.

[0057] Exemplary embodiments are described herein with reference to cross-sectional and / or plan view illustrations that are idealized examples. In the interest of clarity, not all of the layer and regions are shown in the drawings with the same dimensions. For example, the thickness of layers and regions can be exaggerated in the drawings. Thus, the exemplary embodiments should not be construed as limited to the shapes of regions illustrated in the drawings, which are schematic, but include shapes that result from, for example, manufacturing. The regions illustrated in the drawings are schematic and their shapes are not intended to illustrate the actual shape of a region of a device and are not intended to limit the exemplary embodiments in terms of the scope of scope of the exemplary embodiments.

[0058] In the flexible display module, one end of the display panel can be bent to the backlight side for binding the driving chip.

[0059] Figure 1 A plan view of a display module provided in one example, Figure 2 A plan view of a display module provided in one example, Figure 1A partial sectional view of the structure of A-A', as shown below. Figure 1 and Figure 2 As shown, the display module includes: a flexible display panel 10, an anti-reflective layer 20, a cover plate 40, and an adhesive layer 30. The flexible display panel 10 includes: a screen portion 11, a bonding portion 12, and a connecting portion 13 connecting the two. The screen portion 11 includes a display area AA for displaying images. The connecting portion 13 is in a bent state. The bonding portion 12 is located on the backlight side of the screen portion 11 and is used to bond the driver chip 60. Here, "backlight side" refers to the side away from the light emission direction of the display area AA. A driving trace may be provided on the connecting portion 13. The driving trace is electrically connected to the driver chip 60 and is used to transmit the signals provided by the driver chip 60 to the components on the screen portion 11.

[0060] An anti-reflective layer 20 is disposed on the light-emitting side of the screen portion 11 to reduce the reflection of ambient light by the flexible display panel 10. The orthographic projection of the anti-reflective layer 20 onto the screen portion 11 covers the display area AA. A cover plate 40 is disposed on the side of the anti-reflective layer 20 away from the screen portion 11 and is connected to the anti-reflective layer 20 via an adhesive layer 30. The cover plate 40 includes a light-transmitting area TA and a light-shielding area SA. The light-transmitting area TA transmits the emitted light from the display area AA, and the orthographic projection of the connecting portion 13 onto the cover plate 40 is located within the light-shielding area SA. The cover plate 40 may include a transparent substrate 41 (e.g., a glass substrate) and a light-shielding layer 42 (e.g., an ink layer) disposed on the transparent substrate 41. The area covered by the light-shielding layer 42 is the light-shielding area SA, and the area not covered by the light-shielding layer 42 is the light-transmitting area TA.

[0061] Since the connecting part 13 is in a bent state, it is easily damaged by bumps. Therefore, a protective layer 50 is usually provided on the connecting part 13. In addition to covering the connecting part 13, a portion of the protective layer 50 is located on the surface of the screen part 11 facing the cover plate 40 to improve the protection effect.

[0062] The protective layer 50 can be made of colorless and transparent optical adhesive, but in this case, especially for display modules with narrow bezels, light leakage will occur near the light-shielding area SA. Figure 3 A schematic diagram illustrating the principle of light leakage in a narrow-bezel display module, as shown below. Figure 3 As shown, in the narrow-bezel display module, the lateral distance D1 between the edge of the anti-reflective layer 20 near the protective layer 50 and the edge of the light-transmitting area TA near the light-shielding area SA is small. In this case, some of the light emitted by the light-emitting device in the display area AA will undergo total internal reflection inside the flexible display panel 10 and be conducted to the position of the protective layer 50. After diffuse reflection occurs at the position of the protective layer 50, some light (such as...) will be lost. Figure 2As shown in L1, light leaks out through the protective layer 50 and the adhesive layer 30 and out from the light-transmitting area TA of the cover plate 40.

[0063] Figure 4 This is a schematic diagram illustrating the principle of improving light leakage in a display module with a wide bezel, such as... Figure 4 As shown, in a display module with a wide bezel, the lateral distance D1 between the edge of the anti-reflective layer 20 near the protective layer 50 (referred to as the second edge) and the edge of the light-transmitting area TA near the light-shielding area SA (referred to as the first edge) is relatively large. That is, the overlap width between the light-shielding area SA and the anti-reflective layer 20 in the thickness direction of the display module is relatively large. At this time, the light that passes through the protective layer 50 and is directed to the adhesive layer 30 will be blocked by the light-shielding area SA, thereby improving light leakage.

[0064] The distance D1 is related to the degree of light leakage and the bezel width of the display module. The smaller D1 is, the smaller the bezel width and the higher the risk of light leakage; the larger D1 is, the larger the bezel width and the lower the risk of light leakage.

[0065] Figure 5 To display the optical path diagram under the critical condition of light leakage in the module, such as Figure 5 As shown, in one example, the maximum viewing angle of the display module is 45°. The parameters and related angles of each layer in the display module are shown in Table 1. There is an inherent process tolerance of ±0.255mm between the second edge and the first edge. This process tolerance is inherent to the process equipment. That is, when the second edge needs to be aligned with the first edge, due to the process error of the process equipment, the actual maximum distance between the second edge and the first edge can reach 0.025mm. When the first edge is to the left of the second edge, the tolerance takes a negative value; when the first edge is to the right of the second edge, the tolerance takes a positive value. According to the relevant parameters in Table 1, when the light corresponding to the viewing angle of 45° shines from the second edge onto the cover plate 40, the lateral length X of the light path (i.e., the length of the orthographic projection of the light path on the cover plate 40) is 0.088mm. Therefore, combined with Figure 2 and Figure 5As shown, in order to prevent the edge of the display module from light leakage, the distance between the first edge and the second edge is designed to be at least 0.255+0.088=0.343 mm in design. Assuming that the distance D2 between the edge of the display area AA close to the connecting part 13 and the first edge is 0.23 mm, the distance D3 between the edge of the display area AA close to the connecting part 13 and the second edge is designed to be at least 0.343+0.23=0.573 mm. Assuming that the bending radius of the connecting part 13 is between 0.15~0.2 mm, the maximum transverse distance D4 between the second edge and the connecting part 13 is about 0.5 mm, and the frame width D5 corresponding to the connecting part 13 of the display module can only be designed to be 1~2 mm. As can be seen, when the light leakage problem is improved, the width of the frame needs to be increased in the case of limited bonding process; if the light leakage problem is to be solved while reducing the width of the frame, the process precision needs to be improved and the bonding tolerance needs to be reduced, which will greatly increase the production cost.

[0066] Table 1

[0067]

[0068] In order to prevent light leakage and achieve narrow frame without improving process precision, the display module provided by the embodiments of the present disclosure is provided. Figure 6 A schematic view of the display module provided in some embodiments of the present disclosure is shown in FIG. 1. Figure 7 A schematic view of the edge positions of various regions in the display module is shown in FIG. 2. Figure 6 A schematic view of the edge positions of various regions in the display module is shown in FIG. 2. Figure 6 A schematic view of the edge positions of various regions in the display module is shown in FIG. 2. Figure 7 As shown in FIG. 1, the display module includes a flexible display panel 10, a protective layer 50, an anti-reflection layer 20, and a cover plate 40.

[0069] The flexible display panel 10 includes a screen part 11, a binding part 12, and a connecting part 13 connected between the two, the connecting part 13 is in a curved state, and the binding part 12 is located on the backlight side of the screen part 11 and is used to bind a driving chip 60. The screen part 11 includes a display area AA.

[0070] Specifically, the flexible display panel 10 can include a flexible substrate and a plurality of light emitting pieces 10a disposed on the flexible substrate, and the plurality of light emitting pieces 10a are disposed in the display area AA. In one example, the light emitting piece 10a can be an organic light-emitting diode (OLED), a micro light-emitting diode (Micro-LED), or the like. The flexible substrate can be provided with a driving trace, at least a part of the driving trace is located on the connecting part 13, the driving trace is electrically connected with the driving chip 60, and is used to transmit a signal provided by the driving chip 60 to a driving layer on the screen part 11. The driving layer can include a pixel circuit for providing driving current for the plurality of light emitting pieces.

[0071] The protective layer 50 covers the connector 13, thereby protecting the drive traces on the connector 13. Figure 2 The difference is that the protective layer 50 is a light-shielding structure.

[0072] An anti-reflective layer 20 is disposed on the light-emitting side of the screen portion 11 to reduce the reflection of ambient light by the display module. In some examples, the orthographic projection of the anti-reflective layer 20 onto the screen portion 11 covers the display area AA.

[0073] A cover plate 40 is disposed on the side of the anti-reflective layer 20 away from the screen portion 11. The cover plate 40 includes a light-transmitting area TA and a light-shielding area SA. For example, the cover plate 40 may include a transparent substrate 41 (e.g., a glass substrate) and a light-shielding layer 42 (e.g., an ink layer) disposed on the transparent substrate 41. The area covered by the light-shielding layer 42 is the light-shielding area SA, and the area not covered by the light-shielding layer 42 is the light-transmitting area TA. The orthographic projection of the display area AA onto the cover plate 40 lies within the light-transmitting area TA. In one example, the cover plate 40 can be bonded to the anti-reflective layer 20 by an adhesive layer 30, which can be a light-transmitting adhesive layer.

[0074] The light-transmitting area TA includes a first edge E1 that is close to the light-shielding area SA and extends along the bending axis of the connecting portion 13, and the anti-reflective layer 20 includes a second edge E2 that is close to the connecting portion 13. For example... Figure 7 As shown, the orthographic projection of the second edge E2 onto the cover plate 40 is located on the side of the first edge E1 away from the shading area SA.

[0075] In this embodiment of the disclosure, the orthographic projection of the second edge E2 onto the cover plate 40 is located on the side of the first edge E1 away from the light-shielding area SA, compared to Figure 2 The design in Figure 6 The distance between the second edge E2 of the anti-reflective layer 20 and the display area AA is smaller, thus reducing the bezel width of the display module while maintaining current manufacturing precision. Furthermore, since the protective layer 50 is opaque, even with a reduced bezel width, no light will appear at the location of the connection portion 13 on the display module. Figure 3 The issue of light leakage at the edges.

[0076] In some embodiments, the material of the protective layer 50 includes a colloid doped with a dye. For example, the protective layer 50 is a black colloid, which can absorb light.

[0077] In some embodiments, such as Figure 7 As shown, the display area AA includes a third edge E3 near the connecting part 13, and the orthographic projection of the second edge E2 on the screen part 11 is located on the side of the third edge E3 near the connecting part 13.

[0078] The absolute value of the bonding tolerance of the anti-reflection layer 20 is required between the orthographic projection of the second edge E2 on the screen part 11 and the third edge E3, that is, the distance D6 between the orthographic projection of the second edge E2 on the screen part 11 and the third edge E3 is equal to the absolute value of the bonding tolerance of the anti-reflection layer 20, so as to minimize the frame width of the display module while ensuring that the anti-reflection layer 20 can cover the display area AA.

[0079] In some embodiments, the distance D6 between the orthographic projection of the second edge E2 on the screen part 11 and the third edge E3 is between 0.05 and 0.1 mm, so as to minimize the frame width of the display module while ensuring that the anti-reflection layer 20 can cover the display area AA. For example, D6 is 0.05 mm, or 0.07 mm, or 0.08 mm, or 0.1 mm.

[0080] In some embodiments, the distance D7 between the orthographic projection of the third edge E3 on the cover plate 40 and the first edge E1 is between 0.13 and 0.23 mm, so as to facilitate reducing the frame width of the display module. For example, D7 is 0.13 mm, or 0.15 mm, or 0.18 mm, or 0.21 mm, or 0.23 mm.

[0081] In one example, the distance D6 between the orthographic projection of the second edge E2 on the screen part 11 and the third edge E3 is between 0.05 and 0.1 mm, the distance D2 between the orthographic projection of the third edge E3 on the cover plate 40 and the first edge E1 is between 0.13 and 0.23 mm, the bending radius D8 of the connecting part 13 is between 0.15 and 0.2 mm, and the frame width D7 of the display module corresponding to one side of the connecting part 13 can reach 0.5-0.6 mm. The frame width D7 is the horizontal distance from the fourth edge E4 of the protective layer 50 on the cover plate 40 away from the third edge E3 of the display area AA to the display area AA.

[0082] As shown in FIG. 1, the second edge of the anti-reflection layer 20 is in contact with the protective layer 50, for example, there is no gap between the second edge and the protective layer 50, so as to prevent light leakage. Figure 6

[0083] In some embodiments, as shown in FIG. 1, the display module further comprises a first back film 71, a heat dissipation layer 73, a support layer 74, and a second back film 72. Figure 6

[0084] ​​The first back film 71 is disposed on the side of the screen portion 11 facing the bonding portion 12. The first back film 71 protects the screen portion 11. A heat dissipation layer 73 is disposed on the side of the first back film 71 facing the bonding portion 12 and is used to dissipate heat from the flexible display panel 10. A support layer 74 is disposed on the side of the heat dissipation layer 73 facing the bonding portion 12; it is used to maintain a certain distance between the screen portion 11 and the bonding portion 12, keeping the connecting portion 13 in a stable bent state. The material of the support layer 74 can be polyethylene terephthalate (PET), and the thickness of the support layer 74 can be greater than the thickness of any one of the first back film 71, the heat dissipation layer 73, and the second back film 72. The second back film 72 is disposed between the support layer 74 and the bonding portion 12 and is used to protect the bonding portion 12.

[0085] In some embodiments, the first back film 71 and the second back film 72 may be made of the same material and have the same thickness. For example, during the manufacturing process of the display module, a whole back film may be formed on the flexible display panel 10, and then the first back film 71 corresponding to the screen portion 11 and the second back film 72 corresponding to the bonding portion 12 may be formed by cutting.

[0086] In some embodiments, the first back film 71 and the connecting portion 13 do not overlap in the thickness direction of the display module, and the second back film 72 and the connecting portion 13 also do not overlap in the thickness direction of the display module, thereby facilitating the bending of the connecting portion 13.

[0087] It should be noted that, in the embodiments of this disclosure, the absence of overlap between the two structures in the thickness direction of the display module means that the orthographic projections of the two structures on a reference plane perpendicular to the thickness direction of the display module do not overlap; similarly, the presence of overlap between the two structures in the thickness direction of the display module means that the orthographic projections of the two structures on the aforementioned reference plane overlap.

[0088] In some embodiments, such as Figure 6 As shown, the protective layer 50 includes a first portion 51, a second portion 52, and a third portion 53. The first portion 51 covers the connecting portion 13, the second portion 52 is located on the surface of the screen portion 11 away from the binding portion 12, and the third portion 53 is located on the surface of the binding portion 12 away from the screen portion 11. This arrangement allows the protective layer 50 to protect the junction between the screen portion 11 and the connecting portion 13, and the junction between the connecting portion 13 and the binding portion 12.

[0089] The thickness of the second part 52 can gradually decrease along the direction away from the first part 51; the thickness of the third part 53 can also gradually decrease along the direction away from the first part 51.

[0090] When the flexible display panel 10 is bent, the bending can start from the boundary position of the first back film 71 and stop at the boundary position of the second back film 72, and the bent area is the connecting part 13, so that the first back film 71 and the second back film 72 can fully play a protective role on the flexible display panel 10. As shown in Figure 6 The first back film 71 and the second part 52 overlap in the thickness direction of the display module, and the second back film 72 and the third part 53 overlap in the thickness direction of the display module, so as to ensure that the protective layer 50 can protect the intersection position of the screen part 11 and the connecting part 13 and the intersection position of the connecting part 13 and the binding part 12.

[0091] Figure 8 The planar view of the connecting part provided in some embodiments of the present disclosure is in a planar state and a curved state, as shown in Figure 8 As shown in the direction of the bending axis, the size of the second part 52 is greater than that of the first part 51.

[0092] In some embodiments, the anti-reflection layer 20 can include a polarizer, for example, a circular polarizer.

[0093] The present disclosure also provides a manufacturing method of the above-mentioned display module, including the following steps S10-S50.

[0094] S10, providing a flexible display panel, the flexible display panel including a screen part, a binding part, and a connecting part connected between the two.

[0095] S20, forming an anti-reflection layer on the light-out side of the screen part.

[0096] S30, forming a light-shielding protective layer covering the connecting part.

[0097] S40, bending the connecting part so that the binding part is located on the backlight side of the screen part, and the connecting part 13 is in a curved state.

[0098] S50, forming a cover plate on the side of the anti-reflection layer away from the screen part.

[0099] The cover plate includes a light-transmitting area and a light-shielding area; the light-transmitting area includes a first edge close to the light-shielding area and extending along the bending axis direction of the connecting part; the orthographic projection of the display area on the cover plate is located within the light-transmitting area, and the anti-reflection layer includes a second edge close to the connecting part, and the orthographic projection of the second edge on the cover plate is located on the side of the first edge away from the light-shielding area.

[0100] The manufacturing method of the display module will be described below with reference to the accompanying drawings, Figures 9 to 16 The manufacturing method flow chart of the display module provided in Example One, the manufacturing method of the display module includes:

[0101] S10, asFigure 9 As shown, a flexible display panel 10 is provided, which includes a screen portion 11, a bonding portion 12, and a connecting portion 13 connected between the two.

[0102] S20, such as Figure 10 As shown, an anti-reflective layer 20 is formed on the light-emitting side of the screen portion 11. The anti-reflective layer 20 may include a polarizer.

[0103] S21, such as Figure 11 As shown, a first back film 71, a second back film 72, a support layer 74, and a heat dissipation layer 73 are formed on the surface of the flexible display panel 10 away from the reflective layer. The first back film 71 is located on the surface of the screen portion 11 away from the anti-reflective layer 20, and the second back film 72 is located on the bonding portion 12 and on the same surface of the flexible display panel 10 as the first back film 71. The heat dissipation layer 73 is located on the side of the first back film 71 away from the screen portion 11, and the support layer 74 is located on the side of the heat dissipation layer 73 away from the screen portion 11.

[0104] S30, forming a light-shielding protective layer 50 covering the connecting part 13.

[0105] Specifically, step S30 includes S31 to S32:

[0106] S31. Apply an adhesive to the flexible display panel 10, and the adhesive covers the connecting part 13.

[0107] In one example, step S31 specifically includes S31a~S31b:

[0108] S31a, such as Figure 12 As shown, a black opaque colloid 50a is provided; wherein, air bubbles may exist in the colloid 50a, therefore, the colloid 50a can be degassed to ensure the bonding stability of the subsequent protective layer 50 on the connecting part 13, and to ensure that the protective layer 50 can protect the connecting part 13.

[0109] Among them, the black opaque colloid 50a can be a colloid with a high OD (optical density loss), such as a colloid with an OD value of 1.5 to 2, thereby improving the absorption of light by the protective layer 50 and preventing light leakage.

[0110] Degassing can be achieved through a vacuum / negative pressure process.

[0111] S31b, such as Figure 13 As shown, a defoamed black colloid 50a is coated onto the flexible display panel 10, and the colloid at least covers the connecting portion 13.

[0112] S32, such as Figure 14As shown, the colloid 50a is cured to form a light-shielding protective layer 50. Specifically, the colloid 50a is a heat-curable colloid, and the colloid 50a can be cured by heating; or the colloid 50a is a light-curable colloid, and the colloid 50a can be cured by light irradiation. For example, the colloid 50a is cured by ultraviolet (UV) light irradiation.

[0113] S40, as shown in the figure, the connecting part 13 is bent so that the binding part 12 is located on the backlight side of the screen part 11, and the connecting part 13 is in a curved state. Figure 15

[0114] S50, as shown in the figure, a cover plate 40 is formed on the side of the anti-reflection layer 20 away from the screen part 11, and the cover plate 40 includes a light-transmitting area TA and a light-shielding area SA. The light-transmitting area TA includes a first edge E1 close to the light-shielding area SA and extending along the bending axis of the connecting part 13. The orthographic projection of the display area AA on the cover plate 40 is located within the light-transmitting area TA, and the anti-reflection layer 20 includes a second edge E2 close to the connecting part 13, and the orthographic projection of the second edge E2 on the cover plate 40 is located on the side of the first edge E1 away from the light-shielding area SA. Figure 16

[0115] For the manufacturing method of the display module provided in Example Two, as shown in the figure, the manufacturing method of the display module also includes the above-mentioned S10-S20. Figures 17 to 20 Figures 17 to 20 After step S20, the following steps S30-S50 are performed:

[0116] S30 includes S31-S32.

[0117] S31, a colloid is coated on the flexible display panel 10, and the colloid covers the connecting part 13. Step S31 specifically includes S31c-S31f:

[0118] S31c, as shown in the figure, a light-transmitting colloid 50b is provided, which can be a black colloid with certain light-transmitting property, a colorless transparent colloid, or a colloid with certain light-transmitting property of other colors.

[0119] S31d, the light-transmitting colloid 50b is subjected to a defoaming treatment. Figure 17 S31e, as shown in the figure, colloid particles 55 coated with a dyeing agent are doped into the light-transmitting colloid 50b.

[0120] S31f, as shown in the figure, the light-transmitting colloid 50b is cured to form the light-shielding protective layer 50.

[0121] Figure 18

[0122] ​​​​The colloidal particle 55 includes a shell 55b and a dye 55a located within the shell 55b. For example, the translucent colloid 50b is a black colloid with a certain degree of light transmission, or a colorless and transparent colloid; in this case, the dye 55a can be a black dye. Alternatively, the translucent colloid 50b may be a colored colloid with a certain degree of light transmission; in this case, the color of the dye 55a can be a complementary color to the color of the colloid. "Complementary colors" refer to two colors that, when mixed, can form black.

[0123] S31f, such as Figure 19 As shown, a light-transmitting colloid 50b containing colloidal particles 55 is coated on the flexible display panel 10, and the light-transmitting colloid 50b covers the connecting part 13.

[0124] S32. Cure the colloid 50b to form a light-shielding protective layer 50.

[0125] Specifically, step S32 includes: Figure 20 As shown, colloid 50b is irradiated with ultraviolet (UV) light. Figure 21 This is a schematic diagram illustrating the changes in a colloid after it is exposed to light, such as... Figure 21 As shown, when the colloid 50b containing colloidal particles 55 is exposed to ultraviolet light, the shells 55b of the colloidal particles 55 break down under the light, and the dye 55a diffuses in the transparent colloid 50b, thereby mixing with the transparent colloid 50b to form a black opaque colloid; at the same time, under the curing effect of ultraviolet light, the colloid solidifies to form a light-shielding protective layer 50.

[0126] Compared to Example 1, the manufacturing method provided in Example 2 forms a black, opaque colloid through color mixing. This method results in a protective layer 50 with a lower OD value, ranging from 1 to 1.5. Example 2's method allows for optical detection of air bubbles in the colloid before the dye and translucent colloid are mixed, reducing the risk of air bubbles within the colloid.

[0127] Similar to Example 1, after step S30, the above steps S40 to S50 are also performed. See the description above for details, which will not be repeated here.

[0128] This disclosure also provides a display device, which includes the display module described in the above embodiments. The display device can be a mobile phone, television, monitor, tablet computer, navigator, or other product or component with display functionality.

[0129] It is understood that the above embodiments are only exemplary for illustrating the principles of the present disclosure, and the present disclosure is not limited thereto. Various modifications and improvements can be made by those of ordinary skill in the art without departing from the spirit and essence of the present disclosure, and these modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A display module, characterized in that, include: A flexible display panel includes: a screen portion, a bonding portion, and a connecting portion connecting the two, wherein the connecting portion is in a curved state, and the bonding portion is located on the backlight side of the screen portion; the screen portion includes a display area. A light-shielding protective layer that covers the connecting portion; An anti-reflective layer is disposed on the light-emitting side of the screen portion; A cover plate is disposed on the side of the anti-reflective layer away from the screen portion. The cover plate includes a light-transmitting area and a light-shielding area. The light-transmitting area includes a first edge that is close to the light-shielding area and extends along the bending axis direction of the connecting portion. Wherein, the orthographic projection of the display area on the cover plate is located within the light-transmitting area, and the anti-reflective layer includes a second edge near the connecting portion, the orthographic projection of the second edge on the cover plate being located on the side of the first edge away from the light-shielding area; The protective layer includes a first part, a second part, and a third part. The first part covers the connecting part. The second part is located on the surface of the screen part away from the bonding part. The thickness of the second part gradually decreases in the direction away from the first part. The second edge of the anti-reflective layer contacts the second part. The third part is located on the surface of the bonding part away from the screen part. The thickness of the third part gradually decreases in the direction away from the first part.

2. The display module according to claim 1, characterized in that, The display area includes a third edge near the connecting portion, and the orthographic projection of the second edge on the screen portion is located on the side of the third edge near the connecting portion.

3. The display module according to claim 2, characterized in that, The distance between the orthographic projection of the second edge on the screen portion and the third edge is equal to the absolute value of the bonding tolerance of the anti-reflective layer.

4. The display module according to claim 2, characterized in that, The distance between the orthographic projection of the second edge on the screen portion and the third edge is between 0.05 and 0.1 mm.

5. The display module according to claim 2, characterized in that, The distance between the orthographic projection of the third edge on the cover plate and the first edge is between 0.13 and 0.23 mm.

6. The display module according to any one of claims 1 to 5, characterized in that, The display module also includes: An adhesive layer is bonded between the cover plate and the anti-reflective layer; A first back film is disposed on the side of the screen portion facing the bonding portion; A heat dissipation layer is disposed on the side of the first back film facing the bonding portion; A support layer is disposed on the side of the heat dissipation layer facing the bonding portion; The second back film is disposed between the support layer and the binding portion.

7. The display module according to claim 6, characterized in that, The first back film overlaps with the second portion in the thickness direction of the display module, and the second back film overlaps with the third portion in the thickness direction of the display module.

8. The display module according to claim 7, characterized in that, The anti-reflective layer includes a circular polarizer.

9. A display device, characterized in that, The display module includes any one of claims 1 to 8.

10. A method for manufacturing a display module, characterized in that, include: A flexible display panel is provided, the flexible display panel comprising: a screen portion, a bonding portion, and a connecting portion connecting the two; the screen portion includes a display area; An anti-reflective layer is formed on the light-emitting side of the screen. A light-shielding protective layer is formed covering the connection portion; The connecting portion is bent so that the bonding portion is located on the backlight side of the screen portion, and the connecting portion is in a bent state; the protective layer includes a first portion and a second portion, the first portion covers the connecting portion, the second portion is located on the surface of the screen portion away from the bonding portion, and the thickness of the second portion gradually decreases along the direction away from the first portion, and the second edge of the anti-reflective layer contacts the second portion; A cover plate is formed on the side of the anti-reflective layer away from the screen portion. The cover plate includes a light-transmitting area and a light-shielding area. The light-transmitting area includes a first edge that is close to the light-shielding area and extends along the bending axis of the connecting portion. The orthographic projection of the display area onto the cover plate is located within the light-transmitting area, and the anti-reflective layer includes a second edge near the connecting portion, the orthographic projection of the second edge onto the cover plate being located on the side of the first edge away from the light-shielding area.

11. The manufacturing method according to claim 10, characterized in that, The step of forming a light-shielding protective layer covering the connection portion includes: An adhesive is coated onto the flexible display panel, and the adhesive covers the connecting portion; The colloid is cured to form a light-shielding protective layer.

12. The manufacturing method according to claim 11, characterized in that, The process includes, prior to the step of coating the colloidal layer onto the flexible display panel: The colloid is subjected to degassing treatment.

13. The manufacturing method according to claim 11, characterized in that, The colloid coated on the flexible display panel is a black, opaque colloid.

14. The manufacturing method according to claim 11, characterized in that, Prior to the step of coating the colloidal layer on the flexible display panel, the method further includes: incorporating colloidal particles coated with dye into the light-transmitting colloid; The step of curing the colloid includes: irradiating the colloid with ultraviolet light to cure the colloid and break the shell of the colloid particles, and mixing the dye with the light-transmitting colloid to form a black opaque colloid.

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