CN108270898B

CN108270898B - Display screen control circuit board assembly, display screen and electronic equipment

Info

Publication number: CN108270898B
Application number: CN201810055288.0A
Authority: CN
Inventors: 陆忠恒; 张文真
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-01-19
Filing date: 2018-01-19
Publication date: 2020-07-17
Anticipated expiration: 2038-01-19
Also published as: CN108270898A

Abstract

The application discloses display screen control circuit board subassembly, display screen and electronic equipment. The display screen control circuit board assembly comprises a display screen control circuit board and a waterproof board, wherein the display screen control circuit board comprises a substrate; a plurality of components are arranged on the substrate; waterproof sealant is covered on the components for sealing the components; the waterproof plate is arranged on the waterproof sealant. After the waterproof sealant covers a plurality of components, the waterproof plate is arranged on the waterproof sealant, so that liquid cannot permeate into the plurality of components in the vertical direction, the waterproof sealant exists in the horizontal direction, the waterproof sealant is combined with the waterproof plate to ensure the waterproof effect of the components, the integral height of the components can be well limited, and the light and thin requirements of electronic equipment are not easily influenced.

Description

Display screen control circuit board assembly, display screen and electronic equipment

Technical Field

The application relates to the technical field of electronic equipment, in particular to a display screen control circuit board assembly, a display screen and electronic equipment.

Background

In recent years, electronic devices such as smart phones are developed in a light and thin direction, because of differences in use environments of consumers, liquid inlet failure ratios of display screens are continuously improved, and standards of smart phone manufacturers for waterproof grades are also continuously improved. But the existing waterproof schemes of the display screen device are not ideal.

Content of application

The embodiment of the application provides display screen control circuit board subassembly, display screen and electronic equipment, can improve display screen control circuit board's water-proof effects.

In a first aspect, an embodiment of the present application provides a display screen control circuit board assembly, which includes a display screen control circuit board and a waterproof board, where the display screen control circuit board includes a substrate; a plurality of components are arranged on the substrate; waterproof sealant is covered on the components for sealing the components; the waterproof plate is arranged on the waterproof sealant.

In a second aspect, an embodiment of the present application provides a display screen, including display module assembly and display screen control circuit board assembly, display screen control circuit board assembly with the display module assembly coupling, display screen control circuit board assembly is as above display screen control circuit board assembly.

In a third aspect, an embodiment of the present application provides an electronic device, where the electronic device includes a housing and a display screen disposed in the housing, and the display screen is the display screen described above.

The display screen control circuit board assembly provided by the embodiment of the application comprises a display screen control circuit board and a waterproof board, wherein the display screen control circuit board comprises a base plate; the substrate is provided with a plurality of components; waterproof sealant is covered on the components for sealing the components; the waterproof sealant is provided with a waterproof plate. After the waterproof sealant covers a plurality of components, the waterproof plate is arranged on the waterproof sealant, so that liquid cannot permeate into the plurality of components in the vertical direction, the waterproof sealant exists in the horizontal direction, the waterproof sealant is combined with the waterproof plate to ensure the waterproof effect of the components, the integral height of the components can be well limited, and the light and thin requirements of electronic equipment are not easily influenced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 2 is another schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 3 is another schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 4 is another schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 5 is another schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 6 is a schematic structural diagram of a display screen assembly according to an embodiment of the present application.

Fig. 7 is a partially disassembled structural diagram of a display screen assembly according to an embodiment of the present application.

Fig. 8 is a partial cross-sectional view of fig. 6 in the direction a-a.

Fig. 9 is a schematic structural diagram of a display screen control circuit board assembly according to an embodiment of the present application.

Fig. 10 is a partial cross-sectional view of a display panel control circuit board assembly according to an embodiment of the present application.

Fig. 11 is a schematic structural diagram of a waterproof board provided in an embodiment of the present application.

Fig. 12 is another schematic structural diagram of a waterproof board provided in an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The embodiment of the application provides a display screen control circuit board assembly, a display screen and electronic equipment. The details will be described below separately. The display screen can be arranged in the electronic equipment, and the electronic equipment can be a smart phone, a tablet computer and the like.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure, and fig. 2 is another schematic structural diagram of the electronic device according to the embodiment of the present disclosure. The electronic device 100 may include a cover plate 110, a display 120, a circuit board 130, a battery 140, a housing 150, a camera 160, and a fingerprint unlock module 170. It should be noted that the electronic device 1 shown in fig. 1 and fig. 2 is not limited to the above, and may include other devices, or does not include the camera 160, or does not include the fingerprint unlocking module 170.

Wherein the cover plate 110 is mounted to the display screen 120 to cover the display screen 120. The cover plate 10 may be a transparent glass cover plate so that the display screen transmits light through the cover plate 110 for display. In some embodiments, the cover plate 110 may be a glass cover plate made of a material such as sapphire.

The housing 150 may include a middle frame 151 and a rear cover 152, the middle frame 151 and the rear cover 152 may be combined with each other to form the housing 150, and the middle frame 151 and the rear cover 152 may form a receiving space to receive the printed circuit board 130, the display screen 120, the battery 140, and the like. Further, the cover plate 110 may be fixed to the housing 150, and the cover plate 150 and the housing 150 form a closed space to accommodate the printed circuit board 130, the display 120, the battery 140, and the like. In some embodiments, the cover plate 110 is disposed over the middle frame 151, the rear cover 152 is disposed over the middle frame 151, the cover plate 110 and the rear cover 152 are disposed on opposite sides of the middle frame 151, and the cover plate 110 and the rear cover 152 are disposed opposite to each other.

In some embodiments, the housing 150 may be a metal housing, such as a metal such as magnesium alloy, stainless steel, and the like. It should be noted that the material of the housing 150 according to the embodiment of the present application is not limited to this, and other manners may also be adopted, such as: the housing 150 may be a plastic housing. Also for example: the housing 150 is a ceramic housing. For another example: the housing 150 may include a plastic part and a metal part, and the housing 150 may be a housing structure in which metal and plastic are matched with each other, specifically, the metal part may be formed first, for example, a magnesium alloy substrate is formed by injection molding, and then plastic is injected on the magnesium alloy substrate to form a plastic substrate, so as to form a complete housing structure.

It should be noted that, the structure of the housing in the embodiment of the present application is not limited to this, for example: the rear cover and the middle frame are integrally formed to form a completed housing 150 structure, which directly has a receiving space for the printed circuit board 130, the display 120, the battery 140, and the like.

The printed circuit board 130 is mounted in the housing 150, the printed circuit board 130 may be a motherboard of the electronic device 100, and one, two or more of a motor, a microphone, a speaker, an earphone interface, a usb interface, the camera 160, a distance sensor, an ambient light sensor, a receiver, and a processor may be integrated on the printed circuit board 130.

In some embodiments, the printed circuit board 130 may be secured within the housing 150. Specifically, the printed circuit board 130 may be screwed to the middle frame 151 by screws, or may be snapped to the middle frame 151 by means of a snap. It should be noted that the way that the printed circuit board 130 is specifically fixed to the middle frame 151 in the embodiment of the present application is not limited to this, and other ways, such as a way of fixing by a snap and a screw together, may also be used.

Wherein the battery 140 is mounted in the housing 150, and the battery 140 is electrically connected to the printed circuit board 130 to provide power to the electronic device 100. The housing 150 may serve as a battery cover for the battery 140. The case 150 covers the battery 140 to protect the battery 140, and particularly, the rear cover covers the battery 140 to protect the battery 140, reducing damage to the battery 140 due to collision, falling, and the like of the electronic apparatus 100.

The display screen 120 is mounted in the housing 150, and the display screen 120 is electrically connected to the printed circuit board 130 to form a display surface of the electronic device 100. The display screen 120 may include a display area and a non-display area. The display area may be used to display a screen of the electronic device 100 or provide a user with touch control. The top area of the non-display area is provided with an opening for conducting sound and light, and the bottom of the non-display area can be provided with functional components such as a fingerprint module, a touch key and the like. The cover plate 110 is mounted on the display screen 120 to cover the display screen 120, and may form the same display area and non-display area as the display screen 120 or different display areas and non-display areas.

Note that the structure of the display screen 120 is not limited to this. For example, the display screen 120 may be a special-shaped screen, specifically, please refer to fig. 3, and fig. 3 is another schematic structural diagram of the electronic device according to the embodiment of the present application. The electronic device in fig. 3 differs from the electronic device in fig. 1 in that: the electronic device 200 includes a display 220, a cover plate 210, a printed circuit board 230, a battery 240, and a housing 250. Wherein the display screen 220 has a light permeable area 280 formed directly thereon. Specifically, for example: the display screen 220 is provided with a through hole penetrating the display screen 220 in the thickness direction, the light-permeable area 280 may include the through hole, and the through hole may be provided with a front camera, an earpiece, a sensor assembly, and the like. For another example: the display screen 220 is provided with non-display areas, which the light permeable area 280 may comprise. Wherein the cover plate 210 is adapted to the structural arrangement of the display screen 220. It should be noted that the housing 250 may refer to the housing 150, the printed circuit board 230 may refer to the printed circuit board 130, and the battery 240 may refer to the battery 140, which are not described herein again.

Referring to fig. 4, fig. 4 is a schematic structural diagram of another electronic device according to an embodiment of the present disclosure, where the electronic device in fig. 4 is different from the electronic device in fig. 1 in that: the electronic device 400 in fig. 4 includes a display 420, a cover 410, a printed circuit board 430, a battery 440, and a housing 450. The display screen 420 is provided with a notch 490 at its periphery, and the notch 490 can be used for placing a front camera, an earphone, a sensor component, and the like. Wherein the cover plate 410 is adapted to the structural arrangement of the display screen 420. It should be noted that the housing 450 may refer to the housing 150, the printed circuit board 430 may refer to the printed circuit board 130, and the battery 440 may refer to the battery 140, which are not described herein again.

It should be further noted that, in some embodiments, the display screen 120 may not include the non-display area, but may be configured as a full-screen structure, and a distance sensor, an ambient light sensor, and other devices may be disposed below the display screen or at other positions. Specifically, please refer to fig. 5, and fig. 5 is another schematic structural diagram of the electronic device according to the embodiment of the present application. The electronic device 300 includes a display screen 320, a cover 310, a printed circuit board 330, a battery 340, and a housing 350. The display screen 320 covers the housing 350, and has no non-display area. Wherein the cover plate 310 fits the size of the display screen 320. It should be noted that, the housing 350 may refer to the housing 150, the printed circuit board 330 may refer to the printed circuit board 130, and the battery 340 may refer to the battery 140, which are not described herein again.

In some embodiments, the Display 120 may be a liquid Crystal Display (L acquired Crystal Display, L CD) or an Organic light Emitting Diode (Organic L light-Emitting Diode, O L ED) type Display.

In some embodiments, when the display 120 is a liquid crystal display, the electronic device 100 may further include a backlight module, which is not shown in the drawings.

In some embodiments, the cover plate 110, the display screen 120 and the backlight module in the electronic device 100 may form a display screen assembly. Alternatively, the electronic device 100 includes a display panel assembly, which may include a cover plate 110, a display panel 120, and a backlight module. The following description will be made in detail by taking a display screen assembly as an example.

Referring to fig. 6 and 7, fig. 6 is a schematic structural diagram of a display screen assembly according to an embodiment of the present application, and fig. 7 is a schematic partial-disassembled structural diagram of the display screen assembly according to the embodiment of the present application. The display screen assembly 1 may include a cover plate 110, a display screen 120, a backlight module 13 and a waterproof adhesive 12. The cover plate 110, the display screen 120 and the backlight module 13 are sequentially arranged.

Referring to fig. 8, fig. 8 is a partial sectional view of fig. 6 taken along the direction a-a. The cover plate 110 is disposed on the display screen 120, and in particular, the cover plate 110 may refer to the above contents. In some embodiments, the side of the cover plate 110 fixedly connected to the display screen 120 is defined as an inner surface of the cover plate, and the side of the cover plate 110 located outside the electronic device 100 is defined as an outer surface of the cover plate. I.e., the outer surface of the cover plate 110 is visible from the outside, and the inner surface of the cover plate 110 is located inside the electronic device 100.

In some embodiments, the area of the side of the cover plate 110 fixedly connected to the display screen 120 may be larger than the area of the display screen 120, so as to form the display region 111 and the non-display region 112 on the cover plate 110. Wherein the display area 111 and the display screen 120 are fixedly connected to each other. The non-display area is located at the periphery of the cover 112, and is formed outward from the periphery of the display 120 and protrudes from the periphery of the display 120. The size of the area of the non-display region 112 may be set according to actual needs. Such as: if the non-display area needs to be reserved on the top or bottom of the electronic device 100, the area of the non-display area 112 of the cover plate 112 may be set to be larger. For another example: if the non-display area does not need to be reserved at the top or the bottom of the electronic device 100, the non-display area may not be set, or the area of the non-display area is set to be smaller, and the area of the whole cover plate 110 may be slightly larger than the area of the display screen 120.

The display screen 120 can refer to the above contents. In some embodiments, the display screen 120 may include a first side 121 and a second side 122. Wherein the first surface 121 is fixedly connected with the cover plate 110. Specifically, the display screen 120 is fixedly coupled to the inner surface of the cover plate 110 through the first surface 121 thereof. The second surface 122 of the display screen 120 and the backlight module 13 are fixedly bonded by a layer of optical cement 11, and specifically, the optical cement 11 may be an oca (optical Clear adhesive) optical cement.

In some embodiments, the display screen includes a display module and a display screen control circuit board assembly, the display screen control circuit board assembly being coupled to the display module, the display screen control circuit board assembly controlling the display module. For example, for driving the display module to display. The display screen further comprises a touch screen module, and the display screen control circuit board assembly can also be used for controlling the touch screen module of the display screen.

The waterproof scheme of the components of the display screen control circuit board of the display screen 120 may include the schemes of plating a nano film, dispensing, attaching an insulating mylar, and the like. The nano film plating scheme is that the plating layer (the putrefaction solution) only macroscopically increases the hydrophobicity of the surface of the device due to the thinness of the plating layer, and the device can not be corroded for a long time because the liquid can not be discharged or evaporated in time after the liquid is fed into the display screen 120, so that the problem of liquid feeding can not be fundamentally solved. The device periphery dispensing side face of the dispensing scheme has a good waterproof effect, but the surface of the device is limited by the space of the whole machine and can not be dispensed or dispensed too much, and liquid can permeate from the upper surface of the component to corrode after liquid is fed. According to the scheme of adhering the insulating mylar, due to the fact that the height difference exists between the device and the FPC soft board and the FPC or the double-layer FPC is not flat, the insulating mylar is not flat in adhesion, and liquid enters the corrosion device from a gap after liquid feeding.

Referring to fig. 9 and 10, fig. 9 is a schematic structural diagram of a display panel control circuit board assembly according to an embodiment of the present disclosure, and fig. 10 is a partial cross-sectional view of the display panel control circuit board assembly according to the embodiment of the present disclosure. The display screen control circuit board assembly comprises a display screen control circuit board 810 and a waterproof board 814, wherein the display screen control circuit board 810 comprises a substrate 811; a plurality of components 812 are provided on the substrate 811; waterproof sealant 813 is covered on the multiple components 812 to seal the multiple components 812; the waterproof sealant 813 is provided with a waterproof plate 814.

In order to ensure the waterproof performance of the components 812 on the display screen control circuit board 810, the components 812 need to be completely covered by the waterproof sealant 813. Because a plurality of components and parts 812 is uneven in height, when a plurality of components and parts 812 top set up waterproof sealed glue 813, waterproof sealed glue 813 permeates easily between two components and parts to the volume of gluing on components and parts top is difficult to control, and the volume of gluing is too little, can not cover completely sealed, glues the volume too much, and whole module height will increase, can influence the intensity of complete machine. Therefore, after the waterproof sealant 813 covers the plurality of components 812, the waterproof plate 814 is arranged on the waterproof sealant 813, so that liquid cannot permeate in the vertical direction of the plurality of components 812, the waterproof sealant 813 is arranged in the horizontal direction, the waterproof sealant 813 is combined with the waterproof plate 814 to ensure the waterproof effect of the components, the whole height of the electronic equipment can be well limited, and the electronic equipment is not easily influenced in light and thin.

In some embodiments, the waterproof sheet 814 is parallel to the substrate 811. The distance between the waterproof board 814 and the substrate 811 is equal, and the waterproof board 814 is not high on one side and is not low on the other side, so that the height in the Z direction perpendicular to the substrate 811 is the minimum, the electronic device is suitable for being thinned, and the thickness of the electronic device is not additionally increased.

In some embodiments, a waterproof sealant 813 is filled between the components 812. Cover waterproof sealant 813 on a plurality of components and parts 812 earlier, and fill waterproof sealant 813 between a plurality of components and parts 812, then set up waterproof board 814 on waterproof sealant 813, because the height of a plurality of components and parts 812 is different, and then cover the height of waterproof sealant 813 on a plurality of components and parts 812 also different, waterproof board 814 sets up after waterproof sealant 813 at this moment, extrude waterproof sealant 813, make waterproof sealant 813 fill between a plurality of components and parts 812, with the highest waterproof sealant 813 of height down extrude by the side originally, make the peripheral waterproof sealant 813 thickness of components and parts thicken. The waterproof sealant 813 is filled between the components 812, so that the waterproof sealant 813 arranged on the components is not easy to flow, the thickness of the waterproof sealant 813 above the components or on the side is insufficient, and the waterproof performance is affected. The waterproof sealant 813 which can be arranged at the outermost periphery of the component needs to be higher, and then the waterproof board 814 is extruded, so that the sealing performance of the waterproof board 814 and the waterproof sealant 813 is enhanced, and the overall waterproof performance is improved.

In some embodiments, the waterproof sealant 813 is filled between the waterproof sheet 814 and the substrate. Firstly, the waterproof sealant 813 covers the plurality of components 812, and the waterproof sealant 813 covers the space between the plurality of components 812, the height of the waterproof sealant 813 is higher than that of the highest component, namely, the waterproof sealant 813 covers all the components and the space between the components, then the waterproof plate 814 is arranged on the waterproof sealant 813, at the moment, after the waterproof plate 814 is arranged on the waterproof sealant 813, the waterproof sealant 813 is extruded, so that the waterproof sealant 813 is filled between the waterproof plate 814 and the substrate, the originally highest waterproof sealant 813 is extruded aside, and the waterproof sealant 813 is filled between the waterproof plate 814 and the substrate and overflows outwards. Waterproof sealed glue 813 is filled between waterproof board 814 and the base plate, and waterproof board 814 and the base plate protect components and parts from the vertical direction, and waterproof sealed glue 813 is filled with waterproof sealed glue 813 from the horizontal direction between the components and parts moreover, even there is water from the horizontal direction, also can't get into between the components and parts. It should be noted that, when the waterproof sealant 813 is provided, it can be provided layer by layer.

In some embodiments, the plurality of components 812 form a component placement region, and the waterproof sheet 814 has an area larger than that of the component placement region. The plurality of components 812 are provided on the substrate, and the plurality of components 812 may form one component placement region, or an outermost component may be surrounded by one component placement region. The waterproof sealant 813 is arranged on the components, the waterproof sealant 813 on the outermost component is arranged in a sealing mode, the area of the waterproof board 814 is larger than that of the component arrangement area, and therefore liquid can be prevented from contacting the components from the upper side of the components and further corroding the components. Meanwhile, since the area of the waterproof board 814 is larger than the area of the component setting region, the waterproof sealant 813 is filled between the waterproof board 814 and the substrate, the thickness of the outermost waterproof sealant 813 can be thickened, and the waterproof performance in the horizontal direction is improved.

Referring to fig. 11 and 12, fig. 11 is a schematic structural view of a waterproof board provided in an embodiment of the present application, and fig. 12 is another schematic structural view of the waterproof board provided in the embodiment of the present application. The waterproof board 814 is provided with a guiding gutter 815. When the electronic device enters the liquid carelessly, the liquid flows onto the waterproof board 814, and the guiding groove 815 can guide the liquid to a predetermined place, and then the liquid is discharged or processed. One, two or more flow guide grooves 815 may be provided. The channels 815 may extend from one side of the flashing 814 to the other. One end of each of the guiding grooves 815 is disposed at a plurality of positions, and the other end is disposed at the same or similar position, so as to guide the liquid on the waterproof sheet 814 in one direction. The guiding channel 815 of the waterproof sheet 814 may be set to be higher at one end and lower at the other end. Specifically, one end of the guiding trench 815 may be deep, and the other end of the guiding trench may be shallow, or the position of the waterproof plate 814 corresponding to the guiding opening may be lower than other positions.

In some embodiments, a retaining wall protruding upwards is disposed on the substrate 811 around the plurality of components 812, when the waterproof sealant 813 covers the plurality of components 812, the retaining wall can enclose the waterproof sealant 813 in the retaining wall, so as to save the loss of the waterproof sealant 813, the retaining wall is made of a waterproof material, and the retaining wall is provided, so that the thickness of the edge of the waterproof sealant 813 is increased, and the waterproof effect in the horizontal direction can be enhanced. It should be noted that peripheral components in the multiple components 812 can be used as a part of the retaining wall, so that the amount of the waterproof sealant 813 is saved.

It should be noted that the display screen control circuit board can be a single-layer board or a multilayer board, a plurality of components can be arranged on one surface of the display screen control circuit board in a patch manner, and the other surface of the display screen control circuit board can be waterproof by adopting the same structure or only by adopting a waterproof sealant for covering.

In some embodiments, the flashing 814 is a sheet or plate having a reduced thickness, and the thickness of the flashing 814 is less than or equal to 2 millimeters. Of course, the thickness of the flashing 814 may also be less than or equal to 1.5 millimeters, 1.2 millimeters, 1 millimeter, 0.8 millimeters, 0.6 millimeters, 0.5 millimeters, and the like.

In some embodiments, the waterproof sealant is a UV light curable glue (Ultraviolet). Volatile Organic Compound (VOC) volatile matters are not generated, and the pollution to the ambient air is avoided; no solvent and low flammability; the curing speed is high, and the curing can be finished within a few seconds to dozens of seconds, so that the automatic production line is facilitated, and the labor productivity is improved; after being cured, the glass can be detected and transported, so that the space is saved; the room temperature curing can save energy, for example, the energy required for producing 1g of photo-curing pressure-sensitive adhesive only needs 1 percent of that of the corresponding water-based adhesive and 4 percent of that of the solvent-based adhesive. The ultraviolet curing resin can be used for materials which are not suitable for high-temperature curing, and the energy consumption of the ultraviolet curing resin can be saved by 90 percent compared with that of the thermal curing resin; the curing equipment is simple, only lamps or conveyor belts are needed, and the space is saved; the system is a single-component system, does not need mixing and is convenient to use; for temperature, solvent and moisture sensitive materials may be used; the curing is controlled, the waiting time can be adjusted, and the curing degree can be adjusted; the sizing can be repeated for multiple times for curing; the ultraviolet lamp can be easily installed in an existing production line without major modification.

In some embodiments, flashing 814 is a polyethylene terephthalate sheet (PET sheet). The PET plate has good mechanical property, the impact strength is 3-5 times that of other films, and the folding resistance is good. Oil resistance, fat resistance, olefine acid resistance, dilute alkali resistance and most solvents resistance. The high-temperature and low-temperature resistant rubber has excellent high-temperature and low-temperature resistance, can be used for a long time within the temperature range of 120 ℃, can resist high temperature of 150 ℃ and low temperature of-70 ℃ in a short time, and has little influence on the mechanical properties of the rubber at high and low temperatures. Low gas and water vapor permeability, and excellent gas, water, oil and odor barrier properties. High transparency, blocking ultraviolet ray and high lustrousness. No toxicity, no smell and high safety.

The display screen control circuit board assembly, the display screen and the electronic device provided in the embodiments of the present application are described in detail above, and specific examples are applied herein to explain the principles and implementations of the present application, and the descriptions of the above embodiments are only used to help understanding the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A display screen control circuit board assembly is characterized by comprising a display screen control circuit board and a waterproof board, wherein the display screen control circuit board comprises a base plate; a plurality of components are arranged on the substrate; waterproof sealant is covered on the components for sealing the components; the waterproof plate is arranged on the waterproof sealant;

the waterproof sealant is filled between the plurality of components, the waterproof sealant is filled between the waterproof plate and the substrate, the waterproof plate and the substrate protect the plurality of components from the vertical direction, and the waterproof sealant protects the plurality of components from the horizontal direction;

the substrate further comprises a raised retaining wall, the retaining wall surrounds the plurality of components, and the retaining wall is used for enclosing the waterproof sealant in the retaining wall;

the waterproof board is provided with a diversion trench, the diversion trench extends from one side of the waterproof board to the other side, the first end of the diversion trench is higher than the second end of the diversion trench, and the second end of the diversion trench corresponds to the diversion port, so that liquid on the waterproof board flows to the diversion port through the diversion trench.

2. The display control circuit board assembly of claim 1, wherein the waterproof sheet is parallel to the base sheet.

3. The display screen control circuit board assembly of claim 1, wherein the plurality of components form a component placement area, and the waterproof sheet has an area larger than the component placement area.

4. The display control circuit board assembly of claim 1, wherein the waterproof sheet has a thickness of less than or equal to 2 millimeters.

5. The display control circuit board assembly of claim 1, wherein the sealant is an ultraviolet light curable adhesive and/or the waterproof sheet is a polyethylene terephthalate sheet.

6. A display screen, comprising a display module and a display screen control circuit board assembly, wherein the display screen control circuit board assembly is coupled with the display module, and the display screen control circuit board assembly is the display screen control circuit board assembly according to any one of claims 1 to 5.

7. An electronic device, comprising a housing and a display screen disposed in the housing, wherein the display screen is the display screen of claim 6.