Display module and display device

Abstract

The application provides a display module and a display device. The display module comprises a display panel, a display part, a bending part connected to the display part, and a circuit board connecting part located on the side of the bending part away from the display part; the bending part is bent to the back side of the display part so that the circuit board connecting part is folded to the back side of the display part; a conductive layer and a first back plate are located between the display part and the circuit board connecting part; and an electrostatic liquid is connected to the concave side of the bending part, the first back plate and the conductive layer. Thus, the electrostatic liquid connected to the concave side of the bending part, the first back plate and the conductive layer can guide the static electricity on the surface of the display panel and the first back plate away through the conductive layer, the electrostatic liquid is connected to the concave side of the bending part and does not occupy the edge space of the display module, and does not affect the arrangement of other structures in the display module, thereby improving the space utilization of the display module and reducing the damage caused by static electricity to the display module.

Description

TECHNICAL FIELD

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

[0002] Static electricity is everywhere in our daily life. We have high static voltage on our body and around us, several thousand volts or even tens of thousands of volts. We may not feel it in daily life, but for some sensitive instruments, this voltage may be a fatal harm.

[0003] For example, when a mobile phone is subjected to a micro-dropping test, a large amount of electric charge (both positive and negative) will also be generated. Long-term accumulation of a large amount of electric charge will have an adverse effect on the display module. Accumulated static electric charge may cause static breakdown. Static breakdown will cause abnormality of the pixel circuit in the display module, and even cause short circuit to occur, affecting the light-emitting display of the display module.

[0004] In order to realize static discharge of the display module, a conventional method is to apply conductive liquid or silver paste to the edge of the display module. However, the application of conductive liquid or silver paste to the edge of the display module will occupy the edge space of the display module, affecting the arrangement of other structures in the display module. SUMMARY

[0005] In view of this, this summary section is provided to introduce the concepts in a simplified form, which will be described in detail in the following detailed description section. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0006] The purpose of the present application is to provide a display module and a display device, which can realize static discharge in the display module while reducing the occupation of the space of the display module, improve the space utilization rate of the display module, and reduce the damage that static electricity may cause to the display module.

[0007] To achieve the above-mentioned purpose, the present application has the following technical solutions:

[0008] In a first aspect, the present application provides a display module, comprising:

[0009] a display panel, comprising a display part, a bending part connected to the display part, and a circuit board connecting part located on a side of the bending part away from the display part; the bending part is bent to the back side of the display part, so that the circuit board connecting part is folded to the back side of the display part;

[0010] a conductive layer and a first back plate located between the display part and the circuit board connecting part;

[0011] An electrostatic liquid connected with the bending part, the first back plate and the conductive layer.

[0012] In a second aspect, the embodiments of the present application provide a display device, comprising the display module as described above.

[0013] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0014] The embodiments of the present application provide a display module and a display device. The display module comprises a display panel, a bending part connected with the display part, and a circuit board connecting part located on the side of the bending part away from the display part; the bending part is bent towards the back side of the display part, so that the circuit board connecting part is folded to the back side of the display part; a conductive layer and a first back plate located between the display part and the circuit board connecting part; and an electrostatic liquid connected with the concave side of the bending part, the first back plate and the conductive layer. Thus, the electrostatic liquid connected with the concave side of the bending part, the first back plate and the conductive layer can guide the static electricity on the surface of the display panel and the first back plate away through the conductive layer, and the electrostatic liquid is connected with the bending part, does not occupy the edge space of the display module, and does not affect the arrangement of other structures in the display module, thereby improving the space utilization of the display module and reducing the damage caused by static electricity to the display module. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0016] The above and other features, advantages, and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the original and elements are not necessarily drawn according to the scale.

[0017] Figure 1 A schematic diagram of a conventional display module provided by the embodiments of the present application is shown;

[0018] Figure 2 A cross-sectional structure schematic diagram of a display module provided by the embodiments of the present application is shown;

[0019] Figure 3 A cross-sectional structure schematic diagram of another display module provided by the embodiments of the present application is shown;

[0020] Figure 4 A cross-sectional structure schematic diagram of still another display module provided by the embodiments of the present application is shown;

[0021] Figure 5 Fig. 6 shows a cross-sectional structure schematic diagram of another display module provided by an embodiment of the present application;

[0022] Figure 6 Fig. 7 shows a cross-sectional structure schematic diagram of another display panel provided by an embodiment of the present application;

[0023] Figure 7 Fig. 8 shows a plane structure schematic diagram of a display device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0024] In order to make the above objectives, features and advantages of the present application more apparent, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0025] In the following description, a lot of specific details are set forth in order to facilitate a full understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the present application, therefore the present application is not limited by the specific embodiments disclosed below.

[0026] Hereinafter, the terms "first", "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0027] Unless otherwise required by the context, throughout the specification and claims, the term "comprise" and other forms such as "comprises" and "comprising" are interpreted to be open, inclusive meanings, i.e. "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" and the like are intended to mean that the specific features, structures, materials or characteristics related to the embodiment or example are included in at least one embodiment or example of the present disclosure. The illustrative representation of the above terms does not necessarily mean the same embodiment or example. In addition, the specific features, structures, materials or characteristics described can be included in any one or more embodiments or examples in any appropriate manner.

[0028] This document describes exemplary embodiments with reference to cross-sectional views and / or plan views, which are idealized exemplary drawings. In the drawings, the thickness of layers and regions is enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Thus, exemplary embodiments should not be construed as limited to the shapes of the regions shown herein, but rather include shape deviations due to, for example, manufacturing processes. For example, etched regions shown as rectangular would typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the regions of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0029] As described in the background section, the applicant's research has revealed that static electricity is ubiquitous in our daily lives. Our bodies and surroundings carry high static voltages, ranging from thousands to tens of thousands of volts. While we may not normally perceive this voltage, it can be fatal to some sensitive instruments.

[0030] For example, during a micro-drop test on a mobile phone, a large amount of electrical charge (both positive and negative) is generated. Prolonged accumulation of this charge can adversely affect the display module. If the accumulated static charge cannot be released, it may cause electrostatic discharge (ESD). ESD can lead to abnormal pixel circuitry in the display module, and in severe cases, even short circuits, affecting the display module's light emission and display capabilities.

[0031] To achieve electrostatic discharge of the display module, the traditional method is to apply conductive liquid or silver paste to the edge of the display module. However, applying conductive liquid or silver paste to the edge of the display module will occupy the edge space of the display module and affect the setting of other structures in the display module.

[0032] For example, see Figure 1 The diagram shown is a schematic of a conventional display module provided in an embodiment of this application. The display module may include, in sequence, a super clean foam layer 1 (SCF), a backplane layer 2 (BP), a display panel + polarizer layer 3 (Pol), and an optically clear adhesive layer 4 (OCA). Because the conductive liquid or silver paste 6 is placed in the edge area of ​​the display module, it occupies the edge space of the display module, resulting in insufficient clearance space for the entire unit, high process requirements, and yield loss.

[0033] To solve the above technical problems, the display module and the display device are provided, the display module comprises: a display panel, comprising a display part, a bending part connected with the display part, and a circuit board connecting part located on the side of the bending part away from the display part; the bending part is bent to the back side of the display part, so that the circuit board connecting part is folded to the back side of the display part; a conductive layer and a first back plate located between the display part and the circuit board connecting part; and an electrostatic liquid connected with the concave side of the bending part, the first back plate and the conductive layer. Thus, by the electrostatic liquid connected with the concave side of the bending part, the first back plate and the conductive layer, the static electricity on the surfaces of the display panel and the first back plate can be conducted away through the conductive layer, and the electrostatic liquid is connected with the bending part, does not occupy the edge space of the display module, and does not affect the arrangement of other structures in the display module, thereby improving the space utilization of the display module and reducing the damage caused by static electricity to the display module.

[0034] Referring to Figure 2 The cross-sectional structure of the display module provided by the embodiment of the application is shown in the figure, which comprises:

[0035] The display panel 10 comprises a display part 101, a bending part 102 connected with the display part 101, and a circuit board connecting part 103 located on the side of the bending part 102 away from the display part 101; the bending part 102 is bent to the back side of the display part 101, so that the circuit board connecting part 103 is folded to the back side of the display part 101;

[0036] The conductive layer 11 and the first back plate 12 located between the display part 101 and the circuit board connecting part 103;

[0037] The electrostatic liquid 13 connected with the concave side of the bending part 102, the first back plate 12 and the conductive layer 11.

[0038] Thus, in the embodiment of the application, by the electrostatic liquid 13 connected with the concave side of the bending part 102, the first back plate 12 and the conductive layer 11, the static electricity on the surfaces of the display panel 10 and the first back plate 12 can be conducted away through the conductive layer 11, and the electrostatic liquid 13 is connected with the concave side of the bending part 102, utilizes the space of the bending part 102 of the display panel 10, does not occupy the edge space of the display module, does not affect the arrangement of other structures in the display module, improves the space utilization of the display module, and reduces the damage caused by static electricity to the display module.

[0039] Since in the display module, a foam layer 110 is generally arranged between the display panel 10 and the conductive layer 11, and the foam layer 110 is an insulating material, it is necessary to arrange the electrostatic liquid 13 to conduct away the static electricity on the surfaces of the display panel 10 and the first back plate 12.

[0040] The bending part 102 can be bent to the back side of the display part 101, and the circuit board connecting part 103 can be folded to the back side of the display part 101, so that the frame width of the display device using the display module is small, and the narrow frame design of the display device is facilitated.

[0041] Meanwhile, in the embodiment of the present application, in order to realize the bending of the display panel 10, the material of the substrate of the display panel 10 provided by the embodiment of the present application can include glass or transparent ceramic or transparent plastic or various flexible or bendable materials, for example, polymer resins such as polyethersulfone (PES), polyacrylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyarylate, polyimide (PI), polycarbonate (PC) or cellulose acetate propionate (CAP). When the substrate is a flexible material, the display device is a flexible display device, which is beneficial to realize various folding screens, curling screens and other new display forms. The working scenarios of the folding screen, the curling screen and the like include display in a partially bent state, for example, flat panel display in a fully unfolded state, and split screen and split function display in a bent state.

[0042] It should be noted that the material of the electrostatic liquid 13 provided by the embodiment of the present application can be a low-resistance carbon powder-containing adhesive film. Since the electric charge preferentially travels along the path with low resistance, the low-resistance electrostatic liquid 13 can guide the accumulated electric charge on the display panel 10 and the first back plate 12 away, prevent the accumulation of electric charge on the display panel 10 and the first back plate 12, and does not require additional space, and the process is simple to implement.

[0043] In a possible implementation, referring to FIG. 1, Figure 3 FIG. 1 shows a cross-sectional structure schematic diagram of another display module provided by the embodiment of the present application. The display module provided by the embodiment of the present application can further include:

[0044] The second back plate 14 is located on the side of the first back plate 12 away from the display part 101.

[0045] The first back plate 12 is connected with the second back plate 14 through the electrostatic liquid 13.

[0046] The second backplate 14 is connected to the conductive layer 11 via conductive tape 15.

[0047] Therefore, in this embodiment, the electrostatic liquid 13 connected to the second back plate 14 can conduct static electricity on the surfaces of the display panel 10 and the first back plate 12 away through the conductive layer 11. Since the second back plate 14 is connected to the conductive layer 11 via conductive tape 15, static electricity can be conducted away in a timely manner. Furthermore, the electrostatic liquid 13 is connected to the concave side of the bending portion 102, utilizing the space of the bending portion 102 of the display panel 10 without occupying the edge space of the display module, and without affecting the setting of other structures in the display module. This improves the space utilization of the display module and reduces the potential damage to the display module caused by static electricity.

[0048] In one possible implementation, see Figure 2 As shown, in order to minimize the internal space occupied by the display module, the electrostatic liquid 13 can be applied to the ends of the first backplate 12 and the conductive layer 11.

[0049] In one possible implementation, see Figure 3 As shown, in order to minimize the occupation of the internal space of the display module, the electrostatic liquid 13 can be applied to the ends of the first back plate 12 and the second back plate 14, and applied to the concave side of the bending portion 102. The electrostatic liquid 13 can be applied tightly along the concave side of the bending portion 102 to reduce the occupation of the internal space of the display module.

[0050] In one possible implementation, the thickness of the electrostatic liquid 13 is less than or equal to 20 μm, thereby achieving a thinner film layer and reducing the space occupied inside the display module.

[0051] In one possible implementation, see Figure 4 The diagram shown is a cross-sectional view of another display module provided in an embodiment of this application, which may further include:

[0052] The adhesive layer 16 located on the side of the bending portion 102 away from the electrostatic liquid 13, in this embodiment of the application, can reduce the stress transmission that may occur when the display panel 10 is bent, and avoid damage to the display panel 10 that may be caused by excessive stress during bending.

[0053] Optionally, the material of the glue layer provided by the embodiment of the present application can include ultraviolet rays (UV glue, Ultraviolet Rays), also known as photosensitive glue or ultraviolet light curing glue. The ultraviolet rays are a kind of adhesive that can be cured by ultraviolet light irradiation. The ultraviolet rays can be used as an adhesive, and can also be used as a glue for paint, coating, ink, etc. UV is the abbreviation of Ultraviolet Rays, i.e. ultraviolet light. Ultraviolet light (UV) is invisible to the naked eye, and is a segment of electromagnetic radiation other than visible light, with a wavelength in the range of 10-400 nm. The curing principle of the ultraviolet rays is that the photoinitiator (or photosensitizer) in the UV curing material absorbs ultraviolet light under the irradiation of ultraviolet light to produce active free radicals or cations, which initiate monomer polymerization, crosslinking chemical reaction, so that the adhesive is converted from liquid to solid within a few seconds.

[0054] In a possible implementation, the material of the conductive layer 11 provided by the embodiment of the present application can include a copper foil. The copper foil has good conductivity, so that better static discharge and discharge can be achieved.

[0055] In a possible implementation, referring to FIG. 1, Figure 5 FIG. 1 shows a cross-sectional structure schematic diagram of another display module provided by the embodiment of the present application, which can further include:

[0056] A foam layer 110 located between the display part 101 and the conductive layer 11;

[0057] A polarizer 17 (Pol, Polarizer) located on the side of the display part 101 away from the foam layer 110;

[0058] An optically clear adhesive layer 18 (OCA, Optically Clear Adhesive) located on the side of the polarizer 17 away from the display part 101;

[0059] A lens layer 19 (Lens) located on the side of the optically clear adhesive layer 18 away from the polarizer 17.

[0060] The full name of the polarizer 17 should be a polarizing plate. The imaging of the liquid crystal display must rely on polarized light. All liquid crystals have front and back polarizing plates closely attached to the liquid crystal glass to form a liquid crystal sheet with a total thickness of about 1 mm. If any one polarizing plate is missing, the liquid crystal sheet cannot display images.

[0061] The OCA 18 (Optically Clear Adhesive) is a special adhesive for cementing transparent optical elements (such as lenses, etc.). It is required to have colorless transparency, light transmittance of more than 95%, good cementing strength, curing at room temperature or medium temperature, and small curing shrinkage, etc.

[0062] In a possible implementation, referring to Figure 6 As shown in FIG. 13, another cross-sectional structure schematic diagram of a display panel provided by an embodiment of the present application is shown. When the electrostatic liquid 13 does not pass through the second back plate 14, the adhesive tape connected between the second back plate 14 and the conductive layer 11 can be a common fixed adhesive tape 20, and does not need to have a conductive function.

[0063] Therefore, in the embodiment of the present application, different adhesive tapes can be set according to actual conditions for fixing. Compared with the conductive adhesive tape, the common fixed adhesive tape 20 is more cost-effective, can save materials, and reduces the cost of display module preparation, which is conducive to saving resources.

[0064] An embodiment of the present application provides a display module, which comprises: a display panel, comprising a display part, a bending part connected to the display part, and a circuit board connecting part located on a side of the bending part away from the display part; the bending part is bent to the back side of the display part, so that the circuit board connecting part is folded to the back side of the display part; a conductive layer and a first back plate located between the display part and the circuit board connecting part; and an electrostatic liquid connected to the concave side of the bending part, the first back plate and the conductive layer. Therefore, through the electrostatic liquid connected to the concave side of the bending part, the first back plate and the conductive layer, the present application can guide the static electricity on the surface of the display panel and the first back plate away through the conductive layer, and the electrostatic liquid is connected to the bending part, does not occupy the edge space of the display module, and does not affect the arrangement of other structures in the display module, thereby improving the space utilization of the display module and reducing the damage that static electricity may cause to the display module.

[0065] Referring to Figure 7 As shown in FIG. 17, a plane structure schematic diagram of a display device provided by an embodiment of the present application is shown. As can be seen from the figure, the display device 99 comprises a display module 1111, and the display module 1111 is the display module described in any of the above embodiments. The display device 99 provided by an embodiment of the present application can be a mobile phone, a tablet computer, a computer, a television, a vehicle-mounted display device, an instrument display device and other display devices with display functions, which are not specifically limited in the embodiments of the present application. The display device 99 provided by an embodiment of the present application has the beneficial effects of the display module provided by the embodiments of the present application, and specific descriptions can be referred to the specific description of the display module in the above embodiments, which will not be described here again.

[0066] The display device provided by the embodiment of the present application comprises a display module, the display module comprising a display panel, a bending part connected to the display part, and a circuit board connecting part located on the side of the bending part away from the display part; the bending part is bent to the back side of the display part so that the circuit board connecting part is folded to the back side of the display part; a conductive layer and a first back plate located between the display part and the circuit board connecting part; and electrostatic liquid connected to the concave side of the bending part, the first back plate and the conductive layer. Thus, the electrostatic liquid connected to the concave side of the bending part, the first back plate and the conductive layer can guide the static electricity on the surface of the display panel and the first back plate away through the conductive layer, and the electrostatic liquid is connected to the bending part, does not occupy the edge space of the display module, and does not affect the arrangement of other structures in the display module, thereby improving the space utilization of the display module and reducing the damage caused by static electricity to the display module.

[0067] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the difference from other embodiments. In particular, the device embodiments are described more simply because they are basically similar to the method embodiments, and the relevant parts can be referred to the part of the method embodiments.

[0068] The above is only the preferred embodiment of the present application. Although the present application has been disclosed as above with the preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present application, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of the present application, by using the disclosed methods and technical contents. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, without departing from the content of the technical solution of the present application, still falls within the scope of protection of the technical solution of the present application.

Claims

1. A display module, characterized by The display module comprises: a display panel, comprising a display part, a bending part connected to the display part, and a circuit board connecting part located on the side of the bending part away from the display part; the bending part is bent towards the back side of the display part, so that the circuit board connecting part is folded to the back side of the display part; a conductive layer and a first back plate located between the display part and the circuit board connecting part; an electrostatic liquid connected to the concave side of the bending part, the first back plate and the conductive layer; a second back plate located on the side of the first back plate away from the display part; the first back plate is connected to the second back plate through the electrostatic liquid; the second back plate is connected to the conductive layer through a conductive adhesive tape.

2. The display module of claim 1, wherein, The electrostatic liquid is coated on the end of the first back plate and the conductive layer.

3. The display module of claim 1, wherein, The electrostatic liquid is coated on the end of the first back plate and the second back plate, and on the concave side of the bending part.

4. The display module of claim 1, wherein, The thickness of the electrostatic liquid is less than or equal to 20μm.

5. The display module of claim 1, wherein, Further comprising: a glue layer located on the side of the bending part away from the electrostatic liquid.

6. The display module of claim 5, wherein, The material of the glue layer comprises: shadowless glue.

7. The display module of claim 1, wherein, The conductive layer comprises: copper foil.

8. The display module of any of claims 1-7, wherein, Further comprising: a foam layer located between the display part and the conductive layer; a polarizing plate located on the side of the display part away from the foam layer; an optically transparent adhesive layer located on the side of the polarizing plate away from the display part; a lens layer located on the side of the optically transparent adhesive layer away from the polarizing plate.

9. A display device, characterized by comprising: The display module comprises any one of claims 1-8.

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