Display terminal

Abstract

The invention provides a display terminal, and belongs to the technical field of display. The display terminal comprises a display assembly, a rear shell, a first sealing layer, a second sealing layer and a third connecting piece. One side face of the display assembly is connected with the rear shell through the second sealing layer, the third connecting piece is arranged close to the back face of the display assembly, the third connecting piece comprises a first connecting section and a second connecting section which are perpendicular to each other, the first connecting section is connected with the rear shell, and the second connecting section is connected with the display assembly. The display assembly and the second connecting section are connected through the first sealing layer, and the second sealing layer is arranged in a gap among the display assembly, the first sealing layer and the rear shell. According to the display terminal, due to the arrangement of the first sealing layer and the second sealing layer, sealing is formed in the gap between the display assembly and the rear shell, so that the waterproof and dustproof effects can be achieved, and the sealing performance of the display terminal is improved.

Description

TECHNICAL FIELD

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

[0002] With the popularity of liquid crystal display terminal (LCD), its application occasions are more and more. In explosive environment or outdoor environment such as gas station, coal mine, oil field, the waterproof and dustproof performance of display terminal is required to be higher, in the prior art, a glass panel box is arranged, the display terminal is placed in the box (such as vending machine, outdoor advertising machine), so as to realize waterproof and dustproof, but in this way, the display effect of the display terminal is poor, and this way is not the protection performance of the display terminal itself.

[0003] Therefore, the existing display terminal has the problem of poor sealing performance. SUMMARY

[0004] The embodiments of the present application provide a display terminal to solve the problem of poor sealing performance of the existing display terminal.

[0005] In a first aspect, the embodiments of the present application provide a display terminal, which comprises a display assembly, a rear shell, a first sealing layer, a second sealing layer and a third connecting piece. One side of the display assembly is connected with the rear shell through the second sealing layer, the third connecting piece is arranged close to the back of the display assembly, the third connecting piece comprises a first connecting section and a second connecting section which are perpendicular to each other, the first connecting section connects the rear shell, the display assembly and the second connecting section are connected through the first sealing layer, and the gap between the display assembly, the first sealing layer and the rear shell is provided with the second sealing layer.

[0006] Optionally, the display terminal further comprises a backlight source and an opening section, the display assembly comprises a touch screen, a display screen and a circuit board assembly which are connected in sequence, and the opening section connects one end of the rear shell away from the display assembly and extends in the vertical direction. The second sealing layer is arranged between the touch screen and the rear shell, the backlight source is installed on one side of the rear shell, the circuit board assembly passes through the gap between the backlight source and the rear shell and is folded to the back of the backlight source. An installation through hole is formed on the opening section, and the installation through hole is used for allowing the circuit board assembly to pass through.

[0007] Optionally, the display terminal further comprises a protective cover, the protective cover comprising a first protective segment and a second protective segment perpendicular to each other, the first protective segment being arranged along a horizontal direction, and the second protective segment being arranged along a vertical direction; the first protective segment is connected with the rear shell, and the second protective segment covers the mounting through hole.

[0008] Optionally, the display terminal further comprises a first sealing ring, the first sealing ring being arranged between the opening segment and the second protective segment, and the first sealing ring surrounding the mounting through hole.

[0009] Optionally, the display terminal further comprises a first conductive adhesive layer, the opening segment further comprising a third region, the first conductive adhesive layer being arranged between the sealing ring and the mounting through hole, the first conductive adhesive layer connecting the third region and the second protective segment, and the third region being a conductive region on the surface of the rear shell.

[0010] Optionally, the display terminal further comprises a rear cover and a second sealing ring, the rear cover being arranged on a region of the opening segment not covered by the second protective segment, and the second sealing ring being arranged between the rear cover and the opening segment.

[0011] Optionally, the display terminal further comprises a second conductive adhesive layer, the second conductive adhesive layer being arranged between the rear cover and the opening segment, and the second conductive adhesive layer connecting a fourth region of the opening segment, the fourth region being a conductive region on the surface of the rear shell.

[0012] Optionally, the display terminal further comprises a waterproof connector, the waterproof connector being mounted on the rear cover and used for connecting an external power signal.

[0013] Optionally, the rear shell comprises a first bending segment, a second bending segment and a third bending segment connected in sequence, the first bending segment and the third bending segment being arranged along a horizontal direction, and the second bending segment being arranged along a vertical direction; the second sealing layer is arranged between the first bending segment and the display assembly.

[0014] The technical scheme provided by the embodiment of the present application, the display terminal comprises a display assembly, a back shell, a first sealing layer, a second sealing layer and a third connecting piece; one side surface of the display assembly is connected with the back shell through the second sealing layer, the third connecting piece is arranged close to the back surface of the display assembly, the third connecting piece comprises a first connecting section and a second connecting section which are perpendicular to each other, the first connecting section is connected with the back shell, the display assembly and the second connecting section are connected through the first sealing layer, and the second sealing layer is arranged in the gap between the display assembly, the first sealing layer and the back shell. Due to the arrangement of the first sealing layer and the second sealing layer, the gap between the display assembly and the back shell is sealed, so that the waterproof and dustproof effects can be achieved, and the sealing performance of the display terminal is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiment of the present application, the drawings needed in the description of the embodiment of the present application will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor under the premise of the drawings.

[0016] Figure 1 Fig. 1 is a structural schematic diagram of the display terminal provided by the embodiment of the present application; Figure 2 Fig. 2 is a structural schematic diagram of the display assembly provided by the embodiment of the present application; Figure 3 Fig. 3 is an enlarged schematic diagram of A in Fig. 2; Figure 1 Figure 4 Fig. 4 is a structural schematic diagram of the back shell provided by the embodiment of the present application; Figure 5 Fig. 5 is an enlarged schematic diagram of B in Fig. 4; Figure 1 Figure 6 Fig. 6 is a structural schematic diagram of the waterproof connector provided by the embodiment of the present application.

[0017] FIGURE REFERENCES: ​​10, display assembly; 10-1, touch screen; 10-11, cover glass; 10-12, touch screen functional sheet; 10-2, display screen; 10-3, circuit board assembly; 10-21, display screen cell; 10-22, flexible circuit board; 10-23, printed circuit board; 20, back shell; 20-1, first bending section; 20-2, second bending section; 20-3, third bending section; 20-4, opening section; 20-41, mounting via hole; 30, protective cover; 30-1, first protective section; 30-2, second protective section; 40-1, first sealing layer; 40-2, second sealing layer; 40-3, third connecting piece; 40-31, first connecting section; 40-32, second connecting section; 50-1, first conductive adhesive layer; 50-2, first sealing ring; 60, backlight source; 70, back cover; 70-1, second sealing ring; 70-2, second conductive adhesive layer; 80, waterproof connector. DETAILED DESCRIPTION

[0018] 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. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0019] The display terminal is provided in the embodiments of the present application.

[0020] As shown in Figures 1 to 6 , the display terminal comprises a display assembly 10, a back shell 20, and a first sealing layer 40-1, a second sealing layer 40-2, and a third connecting piece 40-3.

[0021] In the present embodiment, the first direction refers to the left-right direction as shown in Figure 1 , which is usually the thickness direction of the display terminal, and the second direction refers to the up-down direction as shown in Figure 1 , which is usually the width direction of the display terminal.

[0022] One side surface of the display assembly 10 is connected with the back shell 20 through the second sealing layer 40-2, and the second sealing layer 40-2 is used to form a seal in the gap between the display assembly 10 and the back shell 20, thereby playing a role of waterproofing and dustproofing, so as to improve the sealing performance of the display terminal.

[0023] Please further refer to Figure 3 , the third connecting piece 40-3 is arranged close to the back surface of the display assembly 10, and it can be understood that Figure 3 , the left side surface of the display assembly 10 is its front surface, and the right side surface is its back surface.

[0024] The third connector 40-3 includes a first connecting segment 40-31 and a second connecting segment 40-32 that are perpendicular to each other. The first connecting segment 40-31 is arranged along a first direction and connected to the rear shell 20. The second connecting segment 40-32 is arranged along a second direction. The display component 10 and the second connecting segment 40-32 are connected by a first sealing layer 40-1. A second sealing layer 40-2 is provided in the gap between the display component 10, the first sealing layer 40-1 and the rear shell 20.

[0025] like Figure 3 As shown, the third connector 40-3 is bent at a right angle and is located within the cavity formed by the rear shell 20 and the display assembly 10. Figure 3 The right side of the display component 10 is shown in the middle, and the third connector 40-3 is closer to the first end of the rear shell 20 than the second end of the rear shell 20. The first connecting segment 40-31 is arranged in the left-right direction, and the second connecting segment 40-32 is arranged in the up-down direction. The first connecting segment 40-31 is fixedly connected to the rear shell 20 (the fixing method between the first connecting segment 40-31 and the rear shell 20 can be welding, gluing, or screw fixing). The third connector 40-3 can enhance the strength of the rear shell 20.

[0026] The display component 10 and the second connecting section 40-32 are connected by a first sealing layer 40-1. The first sealing layer 40-1 can be formed by structural adhesive. Structural adhesive has high bonding strength, excellent elasticity, and good impact resistance, tensile strength, and shear strength after curing. It also has excellent performance in high and low temperatures and weather resistance. Utilizing the slight flow properties and certain anti-thixotropic properties of the structural adhesive, the stability of the adhesive can be maintained. The structural adhesive cures in the gap between the display component 10 and the second connecting section 40-32 to form the first sealing layer 40-1. Subsequently, sealant is filled in the gap between the display component 10, the second connecting section 40-32, and the back cover 20 to form the second sealing layer 40-2. The sealant has good flow properties and can achieve good protection performance at the edge of the display terminal panel, reaching the IP67 protection rating (defined by the International Electrotechnical Commission standard to describe the protection performance of the enclosure of electronic and electrical equipment, especially commonly used in electronic products such as mobile phones, watches, and display terminals).

[0027] Because the edges of the display component 10 are protected by the elastic second sealing layer 40-2 and the first sealing layer 40-1, damage to the glass caused by stress such as edge chipping and sharp points can be prevented, and the glass breakage can also prevent injury to people.

[0028] Optionally, the display terminal also includes a backlight 60 and an opening segment 20-4. The display assembly 10 includes a touch screen 10-1, a display screen 10-2, and a circuit board assembly 10-3 connected in sequence. The opening segment 20-4 is connected to the end of the rear shell 20 away from the display assembly 10 and in a vertical direction (i.e., the second direction). Figure 1 Extending in the vertical direction (as shown); A second sealing layer 40-2 is provided between the touch screen 10-1 and the back cover 20. The backlight 60 is installed on one side of the back cover 20. The circuit board assembly 10-3 passes through the gap between the backlight 60 and the back cover 20 and folds to the back of the backlight 60. The opening section 20-4 has a mounting via 20-41 for the circuit board assembly 10-3 to pass through.

[0029] like Figure 2 As shown, the display assembly 10 includes a touchscreen, a display screen 10-2, and a circuit board assembly 10-3. The touchscreen includes a cover glass 10-11 and a touchscreen functional chip 10-12. The cover glass 10-11 is located on the far left of the display assembly 10 and is the outermost layer that the user can directly touch. Its main function is to protect the more fragile touchscreen functional chip 10-12 and display screen 10-2 below from scratches, drops, breakage, and contamination. The touchscreen functional chip 10-12 is the core component for recognizing the touch position and actions of the user's finger, stylus, etc. The display screen 10-2 includes a display cell 10-21 (including a pol, glass, liquid crystal, driver chip, etc.). The display screen 10-2 is used to convert received image / video signals into visible image content and is the direct source of all the images seen by the user.

[0030] The cover glass 10-11 and the touch screen functional piece 10-12, and the touch screen functional piece 10-12 and the display screen 10-2 are bonded together with adhesive (by filling the interlayer between them with a colorless and transparent adhesive). This assembly of the display component 10 improves the product's optical performance and explosion-proof performance. During assembly, the display component 10 is fixed to the rear shell 20 by the first sealing layer 40-1 and the third connector 40-3.

[0031] Circuit board assembly 10-3 includes flexible circuit board 10-22 and printed circuit board 10-23, in Figure 2 The state shown is the initial state of the circuit board assembly 10-3. The circuit board assembly 10-3 is arranged in the left-right direction. During installation, a portion of the circuit board assembly 10-3 passes through the mounting via 20-41 on the opening section 20-4, and then folds to the right side of the backlight 60. Figure 1The circuit board assembly 10-3 is longer in the left-right direction in the initial state, and the length of the rear shell 20 needs to be relatively long to accommodate the circuit board assembly 10-3 without interference with other structures if no mounting through hole 20-41 is provided. After the mounting through hole 20-41 is provided, the circuit board assembly 10-3 can pass through the mounting through hole 20-41, and the length of the rear shell 20 can be reduced to reduce the size of the display terminal. In addition, the mounting through hole 20-41 is larger than the circuit board assembly 10-3, so that the mounting through hole 20-41 can allow the circuit board assembly 10-3 to be bent.

[0032] Optionally, the display terminal further comprises a protective cover, the protective cover comprising a first protective segment 30-1 and a second protective segment 30-2 perpendicular to each other, the first protective segment 30-1 being arranged along a horizontal direction (i.e. a first direction, Figure 1 the left-right direction as shown), and the second protective segment 30-2 being arranged along a vertical direction; the first protective segment 30-1 is connected to the rear shell 20, and the second protective segment 30-2 covers the mounting through hole 20-41.

[0033] As Figure 5 shown, the first protective segment 30-1 of the protective cover is placed on the rear shell 20 and is fixedly connected thereto. The second protective segment 30-2 is arranged along the up-down direction, and the second protective segment 30-2 can cover the mounting through hole 20-41. The protective cover can prevent liquid and dust from entering the display terminal through the mounting through hole 20-41, and can improve the protection performance.

[0034] Optionally, the display terminal further comprises a first sealing ring 50-2, the first sealing ring 50-2 being arranged between the opening segment 20-4 and the second protective segment 30-2, and the first sealing ring 50-2 surrounding the mounting through hole 20-41.

[0035] As Figure 5 shown, the first sealing ring 50-2 is arranged between the opening segment 20-4 and the second protective segment 30-2, and the first sealing ring 50-2 surrounds the mounting through hole 20-41. Due to the sealing effect of the first sealing ring 50-2, liquid and dust can be prevented from entering the mounting through hole 20-41 through the gap between the opening segment 20-4 and the second protective segment 30-2, further improving the sealing performance of the display terminal of the embodiment. The first sealing ring 50-2 can be made of rubber.

[0036] Optionally, the display terminal further comprises a first conductive adhesive layer 50-1, the opening segment 20-4 further comprising a third region, the first conductive adhesive layer 50-1 being arranged between the first sealing ring 50-2 and the mounting through hole 20-41, the first conductive adhesive layer 50-1 connecting the third region and the second protective segment 30-2, and the third region being a conductive region on the surface of the rear shell 20.

[0037] As shown in Figure 5 , a first conductive adhesive layer 50-1 (usually an elastomer, which can be conductive foam adhesive or conductive rubber) is arranged inside the first sealing ring 50-2. The hardness of the conductive adhesive material is smaller than that of the first sealing ring 50-2, and the elasticity is better than that of the sealing adhesive. Before assembly, the size is higher than that of the first sealing ring 50-2. After assembly, the first conductive adhesive layer 50-1 is in contact with the inside of the back shell 20 and the protective cover 30 by pressing the conductive adhesive, so that the protective cover 30 and the back shell 20 are in good conductive connection state. In this way, the electromagnetic shielding performance can be achieved to prevent internal radiation to the outside and affect the surrounding environment. At the same time, it also prevents external signal interference to the inside and affects normal display. Then press the first sealing ring 50-2 to play the function of internal waterproof and dustproof.

[0038] The third area of the back shell 20 is reserved as a non-spraying area (the back shell 20 is made of stainless steel, which can also be other metal materials such as cold-rolled steel, galvanized steel plate, aluminum plate, etc.). The outer surface of the back shell 20 usually needs to be protected (including spraying and painting) to prevent oxidation and for aesthetic purposes. The material used for the opening section 20-4 and the treatment done are consistent with the back shell 20. The focus is on not spraying the third area of the opening section 20-4 to expose it to contact with other conductive materials.

[0039] Optionally, the display terminal further comprises a back cover 70 and a second sealing ring 70-1. The back cover 70 covers the area of the opening section 20-4 that is not covered by the second protective section 30-2. The second sealing ring 70-1 is arranged between the back cover 70 and the opening section 20-4.

[0040] As shown in Figure 1 , the back cover 70 covers the area of the opening section 20-4 that is not covered by the second protective section 30-2. This area is usually used to set up circuit boards. The back cover 70 can protect these circuit boards. The second sealing ring 70-1 is arranged between the back cover 70 and the opening section 20-4. The second sealing ring 70-1 can be a filling sealing material or use the structure of the first sealing ring 50-2 to improve the sealing performance.

[0041] Optionally, the display terminal further comprises a second conductive adhesive layer 70-2. The second conductive adhesive layer 70-2 is arranged between the back cover 70 and the opening section 20-4. The second conductive adhesive layer 70-2 connects the fourth area of the opening section 20-4. The fourth area is the conductive area of the surface of the back shell 20.

[0042] As shown in Figure 1As shown, similar to the structure between the opening section 20-4 and the second protection section 30-2, the second sealing ring 70-1 is similar in structure to the first sealing ring 50-2, a second conductive adhesive layer 70-2 is arranged inside the second sealing ring 70-1, the fourth area is not sprayed with insulating material, and the second conductive adhesive layer 70-2 connects the fourth area and the back cover 70, playing a role of electromagnetic shielding. The structure of the second conductive adhesive layer 70-2 can be the same as that of the first conductive adhesive layer 50-1.

[0043] Optionally, the display terminal further comprises a waterproof connector 80 mounted on the back cover 70 and used for connecting an external power signal. As shown in Figure 6 As shown, the waterproof connector 80 is mounted on the back cover 70, mainly for external power supply and external communication, including USB, network port, power supply, HDMI, optical port, etc., all of which use waterproof connectors 80.

[0044] Optionally, the back shell 20 comprises a first bending section 20-1, a second bending section 20-2 and a third bending section 20-3 connected in sequence, the first bending section 20-1 and the third bending section 20-3 are both arranged along the horizontal direction, and the second bending section 20-2 is arranged along the vertical direction; a second sealing layer 40-2 is arranged between the first bending section 20-1 and the display assembly 10.

[0045] As shown in Figure 4 As shown, the back shell 20 is made of two bending sections, which can improve the strength of the product and improve the straightness of large-size products, so as to effectively ensure that the gap between the glass of the cover plate glass 10-11 and the back shell 20 is uniform, and the product is beautiful.

[0046] The assembly process of the display terminal is described as follows: First, the touch screen 10-1 and the display screen 10-2 of the display assembly 10 are attached, and then the display assembly 10 is placed on the back shell 2020 (a first sealing layer 40-1 is formed by applying a structure adhesive between the third connecting member 40-3 and the display assembly 10), the circuit board assembly 10-3 of the display assembly 10 passes through the mounting via 20-41 on the opening section 20-4, and then the circuit board assembly 10-3 is folded to the back of the backlight 60. After the structure adhesive is cured to form the first sealing layer 40-1, the gap between the display assembly 10 and the back shell 20 is filled with sealing adhesive to form a second sealing layer 40-2. After the electrical connection is debugged, the first sealing ring 50-2 is assembled and conductive adhesive is applied on the opening section 20-4, and then the protective cover 30 is installed. Similarly, for other openings on the back shell 20, such as the touch screen 10-1 line opening and the circuit board opening, the sequence of assembling the first sealing ring 50-2 and applying conductive adhesive is followed, and then the back cover 70 is installed. The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A display terminal, characterized by comprising: The display terminal includes a display component, a rear shell, a first sealing layer, a second sealing layer, and a third connector; One side of the display component is connected to the rear shell through the second sealing layer. The third connector is disposed near the back of the display component. The third connector includes a first connecting segment and a second connecting segment that are perpendicular to each other. The first connecting segment is connected to the rear shell. The display component and the second connecting segment are connected through the first sealing layer. The second sealing layer is disposed in the gap between the display component, the first sealing layer and the rear shell.

2. The display terminal according to claim 1, characterized in that, The display terminal also includes a backlight and an opening segment. The display component includes a touch screen, a display screen and a circuit board assembly connected in sequence. The opening segment connects to the side of the rear shell away from the display component and extends vertically. A second sealing layer is provided between the touch screen and the back cover. The backlight is installed on one side of the back cover. The circuit board assembly passes through the gap between the backlight and the back cover and is folded to the back of the backlight. The opening section has a mounting through hole for the circuit board assembly to pass through.

3. The display terminal according to claim 2, characterized in that, The display terminal also includes a protective cover, which includes a first protective section and a second protective section that are perpendicular to each other. The first protective section is arranged in a horizontal direction, and the second protective section is arranged in a vertical direction. The first protective section is connected to the rear shell, and the second protective section covers the mounting hole.

4. The display terminal according to claim 3, characterized in that, The display terminal also includes a first sealing ring, which is disposed between the opening section and the second protection section, and surrounds the mounting through hole.

5. The display terminal according to claim 4, characterized in that, The display terminal further includes a first conductive adhesive layer, and the opening section further includes a third region. The first conductive adhesive layer is disposed between the sealing ring and the mounting through hole. The first conductive adhesive layer connects the third region and the second protective section. The third region is a conductive area on the surface of the rear shell.

6. The display terminal according to claim 3, characterized in that, The display terminal also includes a back cover and a second sealing ring. The back cover covers the area of ​​the opening section that is not covered by the second protective section, and the second sealing ring is provided between the back cover and the opening section.

7. The display terminal according to claim 6, characterized in that, The display terminal further includes a second conductive adhesive layer, which is disposed between the back cover and the opening segment. The second conductive adhesive layer connects to a fourth region of the opening segment, which is a conductive region on the surface of the back cover.

8. The display terminal according to claim 6, characterized in that, The display terminal also includes a waterproof connector, which is installed on the back cover and used to connect to an external power signal.

9. The display terminal according to claim 1, characterized in that, The rear shell includes a first bent section, a second bent section, and a third bent section connected in sequence. The first bent section and the third bent section are both arranged in the horizontal direction, and the second bent section is arranged in the vertical direction. A second sealing layer is provided between the first bent section and the display component.

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