CN108170216B - Display control circuit board assembly, display assembly and electronic equipment - Google Patents

Abstract

The application discloses display screen control circuit board subassembly, display screen subassembly and electronic equipment. The display screen control circuit board assembly comprises a substrate; the substrate is provided with waterproof foam and a plurality of components, the plurality of components form a unitary component arrangement area on the substrate, and the waterproof foam is arranged around the periphery of the component arrangement area so as to surround the plurality of components; the waterproof foam is provided with a waterproof board, the waterproof foam and the substrate form a sealed space, and the plurality of components are arranged in the sealed space. According to the scheme, the airtight space is formed by the waterproof foam, the waterproof plate and the substrate, the waterproof effect of the whole machine can be guaranteed, the whole height can be well limited, and the light and thin requirements of electronic equipment are not easily influenced.

Description

Display control circuit board assembly, display assembly and electronic equipment

technical field

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

Background technique

In recent years, electronic devices such as smart phones have developed in the direction of thinness and lightness. Due to the differences in the use environment of consumers, the proportion of display failures due to liquid ingress has continued to increase, and the standards of various smartphone manufacturers for waterproof levels have also been continuously improved. However, the existing waterproof solutions for display devices are not ideal.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a display screen control circuit board assembly, a display screen assembly and an electronic device, which can improve the waterproof effect of the display screen control circuit board.

In a first aspect, an embodiment of the present application provides a display control circuit board assembly, including a substrate; the substrate is provided with waterproof foam and a plurality of components, and the plurality of components form a component on the substrate a setting area, the waterproof foam is arranged around the periphery of the component setting area to surround the plurality of components; a waterproof plate is arranged on the waterproof foam, and the waterproof plate is connected with the waterproof foam, The substrate forms a sealed space, and the plurality of components are arranged in the sealed space.

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

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

The display control circuit board assembly provided by the embodiment of the present application includes a substrate; the substrate is provided with waterproof foam and a plurality of components, and the plurality of components form a component setting area on the substrate, and the waterproof foam The cotton is arranged around the periphery of the component setting area to surround the plurality of components; the waterproof foam is provided with a waterproof plate, and the waterproof plate forms a sealed space with the waterproof foam and the substrate , the plurality of components are arranged in the sealed space. This solution forms a closed space through waterproof foam, waterproof board and substrate, which can ensure the waterproof effect of the whole machine, and can well limit the overall height, which is not easy to affect the thinning requirements of electronic equipment.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the drawings that are used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained from these drawings without creative effort.

FIG. 1 is a schematic diagram of a first structure of an electronic device provided by an embodiment of the present application.

FIG. 2 is a schematic diagram of a second structure of an electronic device provided by an embodiment of the present application.

FIG. 3 is a schematic diagram of a third structure of an electronic device provided by an embodiment of the present application.

FIG. 4 is a schematic diagram of a fourth structure of an electronic device provided by an embodiment of the present application.

FIG. 5 is a schematic diagram of a fifth structure of an electronic device provided by an embodiment of the present application.

FIG. 6 is a schematic plan view of a display screen assembly provided by an embodiment of the present application.

FIG. 7 is a schematic diagram of a partially disassembled structure of a display screen assembly provided by an embodiment of the present application.

FIG. 8 is a partial cross-sectional view along the A-A direction of FIG. 6 .

FIG. 9 is a schematic structural diagram of a display screen control circuit board assembly provided by an embodiment of the present application.

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

FIG. 11 is a schematic structural diagram of the waterproof foam provided by the embodiment of the application.

FIG. 12 is a schematic structural diagram of a waterproof board provided by an embodiment of the present application.

FIG. 13 is another schematic structural diagram of the waterproof board provided by the embodiment of the application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc., or The positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as a limitation on this application. In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined as "first", "second" may expressly or implicitly include one or more of said features. In the description of the present application, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be mechanical connection, electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction of two elements relation. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

In this application, unless otherwise expressly specified and defined, a first feature "on" or "under" a second feature may include direct contact between the first and second features, or may include the first and second features Not directly but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the application. Furthermore, this application may repeat reference numerals and/or reference letters in different instances for the purpose of simplicity and clarity, and does not in itself indicate a relationship between the various embodiments and/or arrangements discussed. In addition, this application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Embodiments of the present application provide a display screen control circuit board, a display screen, and an electronic device. The detailed descriptions will be given below. The display screen assembly may be provided in the electronic device, and the electronic device may be a smart phone, a tablet computer or the like.

Please refer to FIG. 1 and FIG. 2 , FIG. 1 is a schematic structural diagram of an electronic device provided by an embodiment of the present application, and FIG. 2 is another structural schematic diagram of an electronic device provided by an embodiment of the present application. The electronic device 100 may include a cover plate 110 , a display screen 120 , a circuit board 130 , a battery 140 , a casing 150 , a camera 160 and a fingerprint unlocking module 170 . It should be noted that the electronic device 1 shown in FIG. 1 and FIG. 2 is not limited to the above contents, and may also include other devices, or not include the camera 160 , or not include the fingerprint unlocking module 170 .

The cover plate 110 is mounted on 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 can be displayed by the light-transmitting cover plate 110 . In some embodiments, the cover plate 110 may be a glass cover plate made of a material such as sapphire.

Wherein, 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 to form the housing 150, and the middle frame 151 and the rear cover 152 may form a storage space for accommodating the printed circuit board 130, display screen 120, battery 140 and other devices. Further, the cover plate 110 may be fixed to the casing 150, and the cover plate 150 and the casing 150 form a closed space to accommodate the printed circuit board 130, the display screen 120, the battery 140 and other devices. In some embodiments, the cover plate 110 is covered on the middle frame 151 , the rear cover 152 is covered on the middle frame 151 , the cover plate 110 and the rear cover 152 are located on the opposite sides of the middle frame 151 , and the cover plate 110 and the rear cover 152 Relative settings.

In some embodiments, the housing 150 may be a metal housing, such as magnesium alloy, stainless steel and other metals. It should be noted that the material of the casing 150 in the embodiment of the present application is not limited to this, and other methods may also be used, for example, the casing 150 may be a plastic casing. Another example: the casing 150 is a ceramic casing. 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 cooperate with each other. Specifically, the metal part may be formed first, for example, a magnesium alloy substrate may be formed by injection molding. Plastic is then injected on the alloy substrate to form a plastic substrate, which constitutes a complete casing structure.

It should be noted that the structure of the casing 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 casing 150 structure, and the casing directly has a storage space for printing circuits. Board 130, display screen 120, battery 140 and other devices.

Wherein, the printed circuit board 130 is installed in the housing 150, the printed circuit board 130 can be the main board of the electronic device 100, and the printed circuit board 130 can be integrated with a motor, a microphone, a speaker, a headphone interface, a universal serial One, two or more of functional components such as bus interface, camera 160, distance sensor, ambient light sensor, receiver, and processor.

In some embodiments, the printed circuit board 130 may be secured within the housing 150 . Specifically, the printed circuit board 130 can be screwed to the middle frame 151 by screws, or can be snap-fitted to the middle frame 151 by means of snaps. It should be noted that, the specific way of fixing the printed circuit board 130 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 being fixed together by a buckle and a screw, is also possible.

The battery 140 is installed in the casing 150 , and the battery 140 is electrically connected to the printed circuit board 130 to provide power to the electronic device 100 . The case 150 may serve as a battery cover for the battery 140 . The casing 150 covers the battery 140 to protect the battery 140 , specifically, the back cover covers the battery 140 to protect the battery 140 , thereby reducing damage to the battery 140 due to collision, drop, etc. of the electronic device 100 .

The display screen 120 is installed in the casing 150 , and at the same time, the display screen 120 is electrically connected to the printed circuit board 130 to form the 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 the screen of the electronic device 100 or for the user to perform touch manipulation and the like. The top area of the non-display area is provided with openings for sound and light conduction, and functional components such as fingerprint modules and touch buttons can be arranged on the bottom of the non-display area. The cover plate 110 is mounted on the display screen 120 to cover the display screen 120, and can form the same display area and non-display area as the display screen 120, or can form different display areas and non-display areas.

It should be noted 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 , which is another schematic structural diagram of the electronic device provided by the embodiment of the present application. The difference between the electronic device in FIG. 3 and the electronic device in FIG. 1 is that the electronic device 200 includes a display screen 220 , a cover plate 210 , a printed circuit board 230 , a battery 240 and a casing 250 . The display screen 220 is directly formed with a light permeable area 280 thereon. Specifically, for example, the display screen 220 is provided with a through hole passing through the display screen 220 in the thickness direction, the light permeable area 280 may include the through hole, and the position of the through hole may be provided with devices such as a front camera, an earpiece, and a sensor component. For another example, the display screen 220 is provided with a non-display area, and the light permeable area 280 may include the non-display area. The cover plate 210 is suitable for the structural setting of the display screen 220 . It should be noted that the casing 250 can refer to the above casing 150 , the printed circuit board 230 can refer to the above printed circuit board 130 , and the battery 240 can refer to the above battery 140 , which will not be repeated here.

Please refer to FIG. 4 , which is a schematic structural diagram of another electronic device according to an embodiment of the present application. The difference between the electronic device in FIG. 4 and the electronic device in FIG. 1 is that the electronic device 400 in FIG. 4 includes a display screen 420 , cover plate 410 , printed circuit board 430 , battery 440 and housing 450 . The display screen 420 is provided with a notch 490 at its periphery, and the notch 490 can accommodate devices such as a front camera, an earpiece, and a sensor assembly. The cover plate 410 is suitable for the structural setting of the display screen 420 . It should be noted that the casing 450 can refer to the above casing 150 , the printed circuit board 430 can refer to the above printed circuit board 130 , and the battery 440 can refer to the above battery 140 , which will not be repeated here.

It should also be noted that, in some embodiments, the display screen 120 may not include a non-display area, but may be configured as a full-screen structure, and devices such as distance sensors and ambient light sensors may be arranged below the display screen or at other locations. Specifically, please refer to FIG. 5 , which is another schematic structural diagram of an electronic device provided by an embodiment of the present application. The electronic device 300 includes a display screen 320 , a cover plate 310 , a printed circuit board 330 , a battery 340 and a casing 350 . The display screen 320 covers the casing 350 without a non-display area. The cover plate 310 is suitable for the size setting of the display screen 320 . It should be noted that the casing 350 can refer to the above casing 150 , the printed circuit board 330 can refer to the above printed circuit board 130 , and the battery 340 can refer to the above battery 140 , which will not be repeated here.

In some embodiments, the display screen 120 may be a liquid crystal display (Liquid Crystal Display, LCD) or an organic light-emitting diode (Organic Light-Emitting Diode, OLED) type display screen. When the display screen 120 is an organic light emitting diode display screen, the display screen 120 directly serves as a display module.

In some embodiments, when the display screen 120 is a liquid crystal display screen, the electronic device 100 may further include a backlight module. The backlight module is not shown in the figure. For the backlight module, please refer to the backlight module in the prior art. .

In some embodiments, the backlight module and the display screen constitute a display module. The cover plate 110 , the display screen 120 , the display screen control circuit board assembly and the backlight module in the electronic device 100 may form a display screen assembly. In other words, the electronic device 100 includes a display screen assembly, and the display screen assembly may include a cover plate 110, a display screen 120, a display screen control circuit board assembly, and a backlight module. The following takes the display screen assembly as an example for detailed description.

Please refer to FIGS. 6 to 8 . FIG. 6 is a schematic plan view of a display screen assembly provided by an embodiment of the present application, and FIG. 7 is a schematic diagram of a partially disassembled structure of the display screen assembly provided by an embodiment of the present application. Please refer to FIG. 8 . FIG. 8 is a partial cross-sectional view of FIG. 6 in the direction A-A.

As shown in FIG. 7 , the display screen assembly 1 may include a cover plate 110 , a display screen 120 , a display screen control circuit board assembly (which is disposed at one end of the display screen 120 but not shown), a waterproof glue 122 , and a backlight module 121 . The display screen 120 and the backlight module 121 constitute a display module. The cover plate 110 , the display screen 120 and the backlight module 121 are arranged in sequence.

In some embodiments, the cover plate 110 is fixedly connected with the display screen 120 . The backlight module 121 is fixedly connected to the display screen 120 for providing a light source for the display screen 120 .

Referring to FIG. 8 , the cover plate 110 is disposed on the display screen 120 . Specifically, the cover plate 110 can refer to the above content. In some embodiments, the side of the cover plate 110 fixedly connected with the display screen 120 is defined as the inner surface of the cover plate, and the side of the cover plate 110 outside the electronic device 100 is defined as the outer surface of the cover plate. That is, the outer surface of the cover plate 110 can be viewed from the outside, and the inner surface of the cover plate 110 is located inside the electronic device 100 .

In some embodiments, the display screen 120 may include a first side 1201 and a second side 1202 . The display screen 120 is fixedly connected to the inner surface of the cover plate 110 through its first surface 1201 .

In some embodiments, the first surface 1201 of the display screen 120 and the inner surface of the cover plate 110 are fixedly bonded by a layer of optical glue. Wherein, the optical adhesive can be OCA (Optically Clear Adhesive) optical adhesive.

In some embodiments, the backlight module 121 includes an inner surface and an outer surface. Wherein, the side where the backlight module 121 is fixedly connected with the display screen 120 is defined as the inner surface of the backlight module, and the side located outside the display screen assembly 1 is defined as the outer surface of the backlight module, and the outer surface of the backlight module can be Installed on the housing 150 of the electronic device 100 , such as on the middle frame 151 . In some embodiments, the inner surface of the backlight module 121 is fixedly connected to the second surface 1202 of the display screen 120 . The display screen 120 is disposed between the cover plate 110 and the backlight module 121 .

The component waterproofing scheme of the display screen control circuit board of the display screen 120 may include schemes such as nano-film plating, glue dispensing, and insulating mylar sticking. Among them, the nano-film plating scheme, that is, the plating layer (corrosion solution) is too thin, but the hydrophobicity of the surface of the device is macroscopically increased. When the display screen 120 enters the liquid, it cannot be discharged or evaporated in time, and the device will be corroded for a long time. Can not fundamentally solve the problem of liquid inflow. In the dispensing scheme, the side of the device around the device has a better waterproof effect, but due to the limitation of the whole machine space, the device surface cannot be dispensed or too much glue is dispensed. After the liquid is injected, the liquid will penetrate from the upper surface of the component to cause corrosion. The insulating mylar solution is due to the height difference between the device and the flexible printed circuit (Flexible Printed Circuit for short), and the unevenness between the FPC itself or the double-layer FPC, resulting in the uneven attachment of the insulating mylar, and the liquid enters the corrosion device from the gap after the liquid enters.

Please refer to FIG. 9 and FIG. 10 , FIG. 9 is a schematic structural diagram of a display screen control circuit board assembly provided by an embodiment of the present application, and FIG. 10 is a partial cross-sectional view of a display screen control circuit board assembly provided by an embodiment of the present application. The display control circuit board assembly 810 includes a substrate 811; the substrate 811 is provided with a waterproof foam 813 and a plurality of components 812, and the plurality of components 812 form a component setting area S on the substrate, and the waterproof foam The cotton 813 is arranged on the periphery of the component setting area S to surround a plurality of components 812; the waterproof foam 813 is provided with a waterproof plate 814, and the waterproof plate 814 forms a sealed space 817 with the waterproof foam 813 and the substrate 811, A plurality of components 812 are arranged in the sealed space 817 .

In order to ensure the waterproof performance of the multiple components 812 on the display control circuit board 810, it is necessary to completely cover the multiple components 812 with a waterproof sealant. Due to the unevenness of the multiple components 812, when the waterproof sealant is provided on the top of the multiple components 812, the waterproof sealant easily penetrates between the two components, so that the amount of glue at the top of the components is not easy to control, and the amount of glue is too small to completely Covering and sealing, too much glue, the height of the entire module will increase, which will affect the strength of the whole machine. Therefore, a waterproof foam 813 is provided on the substrate 811, and is arranged along the periphery of the component setting area S formed by a plurality of components 812, and then a waterproof plate 814 is set on the waterproof foam 813. The waterproof plate 814, the waterproof bubble The cotton 813 and the substrate 811 form a sealed space 817 , and a plurality of components 812 are arranged in the sealed space 817 . In order to realize the waterproof function of the multiple components 817, and can well limit the overall height, it is not easy to affect the light and thin requirements of electronic equipment. Wherein, the substrate may be FPC.

In some embodiments, when the waterproof foam 813 is arranged around the periphery of the component arrangement area S, it can form a shape conforming to the waterproof plate 814 , such as a box shape. In addition, other shapes can also be formed, such as elliptical rings, polygonal shapes, and the like.

In some embodiments, referring to FIG. 11 , the waterproof foam 813 has an adhesive bottom surface 8131 , and the waterproof foam 813 is connected to the substrate 811 through the bottom surface 8131 , so that the waterproof foam 813 and the waterproof plate 814 can be attached to each other without gaps. attached together.

In some embodiments, continuing to refer to FIG. 11 , the waterproof foam 813 has an adhesive top surface 8132 , the top surface 8132 is disposed opposite to the bottom surface 8131 , and the waterproof foam 813 is connected to the waterproof plate 814 through the top surface 8132 , so that The waterproof foam 813 and the substrate 811 can be attached together without gaps.

In some embodiments, the waterproof foam 813 may be formed by alternately stacking multiple layers of tape and foam. The bottom surface 8131 and the top surface 8132 of the waterproof foam can be the adhesive side of the adhesive tape. Waterproof foam 813 can be a new type of tape that adopts the unique LSV technology of low odor and low VOC and the structure of tiny individual bubbles. It adopts a combination of special polyethylene foam technology, and has excellent properties such as thinness, softness and water resistance.

In some embodiments, the thickness of the waterproof foam 813 in the direction perpendicular to the substrate 811 is higher than the height of any component 812 in the direction perpendicular to the substrate 811 .

In some embodiments, the flashing plate 814 is parallel to the base plate 811 . The distance between the waterproof plate 814 and the substrate 811 is equal, and the waterproof plate 814 is not high on one side and low on the other, that is, the vertical height of the substrate 811 in the Z direction can be minimized, which is suitable for the thinning of electronic equipment and does not increase the thickness of the electronic equipment.

In some embodiments, a waterproof sealant can also be filled between the plurality of components 812 . First, the waterproof sealant 813 is covered on each component 812, and the waterproof sealant is filled between the plurality of components 812 to form an independent small closed space. Then, the waterproof foam 813 is attached to the substrate 811 around the component setting area S where the plurality of components 812 are located, and then the waterproof plate 814 is covered on the waterproof foam 813 to form a large airtight space. Through the protection of the double-layered closed space, the sealing performance of the whole machine is enhanced, thereby improving the overall waterproof performance.

In some embodiments, referring to FIG. 10 , the area of the waterproof plate 814 is larger than the area of the component arrangement area S. A plurality of components 812 are arranged on the substrate, and the plurality of components 812 form a component arrangement area S, or the outermost components may enclose a component arrangement area S. The waterproof foam 813 is arranged at the outermost periphery of the component, and the area of the waterproof plate 814 is larger than the area of the component arrangement area S, which can prevent liquid from contacting the component from above the component and corroding the component. At the same time, because the area of the waterproof plate 814 is larger than the area of the component setting area S, the waterproof foam 813 is arranged between the waterproof plate 814 and the substrate 811, and the waterproof foam 813 can be thickened in the horizontal direction (ie, the direction parallel to the substrate 811). thickness to improve the waterproof performance in the horizontal direction.

Please refer to FIGS. 12 and 13 , FIG. 12 is a schematic structural diagram of a waterproof board provided by an embodiment of the application, and FIG. 13 is another structural schematic diagram of a waterproof board provided by an embodiment of the application. The waterproof plate 814 is provided with a guide groove 815 . When the electronic device accidentally enters the liquid, the liquid flows onto the waterproof plate 814, and the liquid can be guided to a preset place by using the guide groove 815, and then it is discharged or processed in other ways. One, two or more guide grooves 815 can be provided. The guide groove 815 may extend from one side of the waterproof plate 814 to the other side. One end of the plurality of diversion grooves 815 is set at multiple positions, and the other end is set at the same or similar position, so as to achieve the effect of guiding the liquid on the waterproof plate 814 in one direction. The guide groove 815 of the waterproof plate 814 can be set to be high at one end and low at the other. Specifically, one end of the diversion groove 815 may be deep and the other end shallow, or the position of the waterproof plate 814 corresponding to the diversion opening may be lower than other positions.

In some embodiments, the substrate 811 is further provided with a blocking wall protruding upward around the plurality of components 812. When the waterproof foam 813 is set around the component setting area S, the waterproof foam 813 can be set between the blocking wall and the component setting area S. between the peripheries of the plurality of components 812 . The retaining wall itself can be made of waterproof material, and with the retaining wall, the waterproof effect in the horizontal direction can be further enhanced.

In some embodiments, the waterproof plate 814 is a plate or sheet with a smaller thickness, and the thickness of the waterproof plate 814 is less than or equal to 2 mm. Of course, the thickness of the waterproof plate 814 may also be less than or equal to 1.5 mm, 1.2 mm, 1 mm, 0.8 mm, 0.6 mm, 0.5 mm, and the like.

In some embodiments, the sealant is an ultraviolet curing adhesive (UV glue, Ultraviolet). No volatile organic compound (VOC) volatiles, no pollution to ambient air; no solvent, low flammability; fast curing speed, curing can be completed in a few seconds to tens of seconds, which is conducive to automated production lines and improves labor productivity; after curing It can be tested and transported, saving space; room temperature curing, saving energy, for example, the energy required to produce 1g of light-curing pressure-sensitive adhesive only needs 1% of the corresponding water-based adhesive and 4% of the solvent-based adhesive. It can be used for materials that are not suitable for high temperature curing, and the energy consumed by UV curing can save 90% of energy consumption compared with thermal curing resin; the curing equipment is simple, only lamps or conveyor belts are required, saving space; one-component system, no need to mix, use Convenient; can be used for temperature, solvent and moisture sensitive materials; controlled curing, waiting time can be adjusted, curing degree can be adjusted; can be repeatedly applied and cured multiple times; UV lamps can be easily installed in existing production lines, no need to compare Big change.

In some embodiments, the waterproof board 814 is a polyethylene terephthalate board (PET board, Polyethyleneterephthalate). PET board has good mechanical properties, impact strength is 3 to 5 times that of other films, and good folding resistance. Oil resistance, fat resistance, alkanoic acid resistance, dilute alkali resistance, resistance to most solvents. It has excellent high and low temperature resistance, can be used for a long time in the temperature range of 120 °C, can withstand high temperature of 150 °C in short-term use, and can withstand low temperature of -70 °C, and has little impact on its mechanical properties at high and low temperatures. It has low gas and water vapor permeability, and has excellent gas barrier, water, oil and odor properties. High transparency, can block ultraviolet rays, and good gloss. Non-toxic, tasteless, good hygiene and safety.

The display control circuit board, display screen and electronic device provided by the embodiments of the present application have been introduced in detail above. The principles and implementations of the present application are described with specific examples in this paper. The descriptions of the above embodiments are only used to help understand this application. At the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific embodiments and application scope. To sum up, the content of this specification should not be construed as a limitation to the present application.

Claims (10)

1. A display screen control circuit board assembly is characterized by comprising a substrate; the substrate is provided with waterproof foam and a plurality of components, waterproof sealant is filled among the components, the waterproof sealant covers the components to form independent small sealed spaces, the components form a unitary component arrangement area on the substrate, and the waterproof foam is arranged around the periphery of the component arrangement area to surround the components; the waterproof foam is provided with a waterproof board, the waterproof foam and the substrate form a sealed space, the plurality of components are arranged in the sealed space, the substrate is provided with a raised retaining wall, the retaining wall is arranged around the plurality of components, the waterproof foam is arranged between the retaining wall and the components, and the retaining wall is made of waterproof materials;

the waterproof board is provided with a guide groove, the guide groove extends from one side of the waterproof board to the other side, and the depth of one end of the guide groove is larger than that of the other end of the guide groove.

2. The display control circuit board assembly of claim 1, wherein the waterproof foam has an adhesive bottom surface, and the waterproof foam is coupled to the substrate through the bottom surface.

3. The display control circuit board assembly of claim 2, wherein the waterproof foam has an adhesive top surface disposed opposite the bottom surface, the waterproof foam being coupled to the waterproof panel through the top surface.

4. The display screen control circuit board assembly of claim 1, wherein the thickness of the waterproof foam in the direction perpendicular to the substrate is greater than the height of the component in the direction perpendicular to the substrate.

5. The display control circuit board assembly of claim 4, wherein the waterproof sheet is parallel to the base sheet.

6. The display screen control circuit board assembly of claim 5, wherein the waterproof board has an area larger than that of the component mounting region.

7. The display control circuit board assembly of any of claims 1-6, wherein the waterproof sheet has a thickness of less than or equal to 2 millimeters.

8. The display screen control circuit board assembly of any one of claims 1-6, wherein the waterproof foam is formed by alternately stacking multiple layers of adhesive tapes and foam.

9. A display screen assembly comprising 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 being as claimed in any one of claims 1 to 8.

10. An electronic device comprising a housing and a display screen assembly disposed in the housing, the display screen assembly being the display screen assembly of claim 9.

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