Display device

Abstract

A display device (100), comprising: a backlight structure member, a glass cover (103), a liquid crystal panel (104), a backlight guide assembly (105), and a protective layer (108). The backlight structure member comprises a bottom portion (101) and a side portion (102), and the side portion (102) of the backlight structure member is bonded to the glass cover (103). In the thickness direction of the display device (100), the bottom portion (101) of the backlight structure member and the glass cover (103) are respectively provided at two ends of the display device (100). The liquid crystal panel (104) and the backlight guide assembly (105) are provided between the bottom portion (101) of the backlight structure member and the glass cover (103), and the liquid crystal panel (104) is connected to the glass cover (103). The backlight guide assembly (105) is provided at the end where the bottom portion (101) of the backlight structure member is located. An edge region of the liquid crystal panel (104) is provided with a shielding layer (107), and the protective layer (108) is within the shielding range of the shielding layer (107); and in the thickness direction of the display device (100), the protective layer (108) is located between the liquid crystal panel (104) and the backlight guide assembly (105). The display device (100) is applicable to smart vehicles or new energy vehicles, and can reduce the width of a bezel of the display device (100), thereby increasing the screen-to-body ratio.

Description

Display device

[0001] The present application claims priority to the Chinese patent application with the application number 202411359519.9, the title of which is “Display device”, filed on September 26, 2024, with the State Intellectual Property Office of China, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of display, more particularly, to a display device. BACKGROUND

[0003] With the development of liquid crystal display technology, liquid crystal displays are increasingly applied in vehicles, such as display devices of center control screens, co-pilot screens, instrument screens, etc.

[0004] In order to improve the proportion of the effective display area in the display device, vehicle-mounted display devices gradually develop towards narrow frame. How to reduce the frame width of the display device becomes a problem to be solved. SUMMARY

[0005] The present application provides a display device, which can reduce the frame width of the display device and improve the screen ratio.

[0006] In a first aspect, a display device (100) is provided. The display device (100) comprises a backlight structure, a glass cover plate (103), a liquid crystal panel (104), a backlight light guide assembly (105), and a protective layer (108). The backlight structure comprises a bottom (101) and a side (102), and the side (102) of the backlight structure is bonded to the glass cover plate (103).

[0007] In the thickness direction of the display device (100), the bottom (101) of the backlight structure and the glass cover plate (103) are respectively arranged at two ends of the display device (100); the liquid crystal panel (104) and the backlight light guide assembly (105) are arranged between the bottom (101) of the backlight structure and the glass cover plate (103), the liquid crystal panel (104) is connected to the glass cover plate (103); the backlight light guide assembly (105) is arranged at one end where the bottom (101) of the backlight structure is located. The edge region of the liquid crystal panel (104) is provided with a shielding layer (107), the protective layer (108) is within the shielding range of the shielding layer (107); and in the thickness direction of the display device (100), the protective layer (108) is between the liquid crystal panel (104) and the backlight light guide assembly (105).

[0008] In actual scenarios (such as scenarios in which the display device is applied to a vehicle), the backlight light guide assembly is likely to expand due to heat and / or jump due to external vibration. In this application, since the protective layer is between the liquid crystal panel and the backlight light guide assembly, in the case that the backlight light guide assembly expands due to heat and / or jumps due to vibration, the backlight light guide assembly will not directly contact the liquid crystal panel, but will contact the protective layer. In this way, on the one hand, by arranging the protective layer, damage to the liquid crystal panel due to the jumping of the backlight light guide assembly can be avoided, so that the structural member (such as a middle frame) for limiting the jumping of the backlight light guide assembly in the traditional display device can be cancelled, thereby the width of the frame can be reduced; on the other hand, since the protective layer is arranged in the shielding range of the shielding layer, the arrangement of the protective layer will not adversely affect the frame width and function of the display device. Therefore, the narrow frame effect can be achieved while the function of the display device is ensured, and the screen ratio is improved.

[0009] Exemplarily, one end of the central region of the protective layer close to the liquid crystal panel can be referred to as the first side of the protective layer; one end of the protective layer towards the backlight light guide assembly can be referred to as the first end of the protective layer; one side of the central region of the shielding layer close to the liquid crystal panel can be referred to as the second side of the shielding layer.

[0010] In some possible implementation manners, the transverse distance between the first side of the protective layer and the second side of the shielding layer can satisfy the following condition: the transverse distance can be greater than or equal to the product of the longitudinal distance between the first end of the protective layer and the shielding layer and the tangent value of the first inclined viewing angle.

[0011] In actual use, when a user watches the display device, the line of sight of the user can not be completely perpendicular to the liquid crystal panel / shielding layer. If the arrangement position of the protective layer does not satisfy the above condition, under the inclined viewing angle, the shielding layer will be difficult to effectively play a shielding role, and the protective layer will be exposed to the line of sight of the user, which can cause complaints of the user on the product quality. In this application, based on the longitudinal distance between the first end of the protective layer and the shielding layer, the transverse distance between the first side of the protective layer and the second side of the shielding layer is coordinated, which can reduce the influence of the arrangement of the protective layer on the appearance of the display device, and is beneficial to reducing the complaints of the user on the product quality.

[0012] In some possible implementation manners, the first inclined viewing angle can be greater than or equal to 30 degrees. For example, the inclined viewing angle can be 30 degrees.

[0013] In actual use, in most scenarios of watching the display device, the user faces the display device; and for a vehicle-mounted display device, the length and / or width thereof is often less than the distance between the user's head and the display device. In the present application, the transverse distance between the first side of the protective layer and the second side of the shielding layer is set to 30 degrees of the first oblique viewing angle, which can effectively avoid the exposure of the protective layer in the user's field of view at the oblique viewing angle for most display devices in vehicle-mounted scenarios.

[0014] In some possible implementation manners, the protective layer (108) can be arranged on the surface of the liquid crystal panel (104) facing the backlight light guide assembly (105).

[0015] In a specific implementation, the longitudinal distance between the liquid crystal panel and the backlight light guide assembly can include the height (or thickness) of the protective layer itself and can also include a certain gap. In the present application, when the protective layer is arranged on the surface of the liquid crystal panel, even if the above gap exists, the gap will be between the protective layer and the backlight light guide assembly; compared with the scheme of arranging the protective layer on the surface of the backlight light guide assembly, this manner can reduce the longitudinal distance between the first end of the protective layer and the shielding layer; the reduction of the longitudinal distance can effectively avoid the exposure of the protective layer in the user's field of view at the oblique viewing angle.

[0016] In some possible implementation manners, the backlight light guide assembly (105) can include a film assembly (1051) and a light guide plate (1052). The side surface of the light guide plate (1052) can be provided with a protruding portion (1053), and the side portion (102) of the backlight structure member can be provided with a limiting structure (1021) matched with the protruding portion (1053).

[0017] In actual scenarios, compared with the film assembly, the thickness and weight of the light guide plate are relatively large, and the light guide plate is more likely to jump due to external factors; and the movement of the light guide plate will drive the movement of the film assembly. In the present application, by arranging the protruding portion on the light guide plate and arranging the limiting structure matched with the protruding portion on the side portion of the backlight structure member, the movement of the light guide plate can be limited in at least one degree of freedom, and the jumping amplitude of the film assembly and the backlight light guide assembly can be limited.

[0018] In some possible implementation manners, the protruding portion can be arranged on the top side of the light guide plate.

[0019] For the vehicle-mounted display device, in normal use, it is often in the vertical state or has a small inclination angle relative to the vertical state. The light guide plate may contact the backlight structure on the ground side under the action of gravity. On the one hand, the friction generated thereby will hinder the movement of the light guide plate on the ground side relative to the liquid crystal panel; on the other hand, it will cause the jump of the light guide plate on the sky side to be larger. However, the jump amplitude of the light guide plate may exceed the damping and limiting capacity of the protective layer.

[0020] In the present application, by providing a protruding portion on the sky side of the light guide plate, the jump amplitude of the light guide plate can be limited without introducing additional installation problems, so that the protective layer can effectively limit the jump of the backlight light guide assembly relative to the liquid crystal panel.

[0021] In some possible implementations, in the free state, the protective layer (108) can not contact the backlight light guide assembly (105). That is, in the free state, there can be a certain gap between the protective layer (108) and the backlight light guide assembly (105).

[0022] In actual use, the relative distance between the liquid crystal panel and the backlight light guide assembly may change due to external conditions such as environmental temperature and vibration. If the protective layer is in contact with the backlight light guide assembly in the free state, the protective layer will be in a compressed state for a long time in actual work, so that its shape is difficult to recover, which reflects the degradation of its damping and protection performance. Moreover, in the backlight light guide assembly, the diaphragm assembly is above the light guide plate, and when the protective layer is in contact with the backlight light guide assembly, the protective layer will exert pressure on the diaphragm assembly, and the diaphragm assembly will not be able to move freely; if the protective layer is in contact with the diaphragm assembly in the free state, in actual work, the diaphragm assembly will wrinkle due to the inability to move freely under external vibration, which will affect the display performance of the display device.

[0023] In the present application, a certain gap is reserved between the protective layer and the backlight light guide assembly in the free state. Even if the relative positional relationship between the liquid crystal panel and the backlight light guide assembly changes, the protective layer can be maintained in an elastically deformed state, which can effectively maintain the damping and protection performance of the protective layer for a long time, and is beneficial to maintaining the shape of the diaphragm assembly to ensure the display performance of the display device.

[0024] In some possible implementations, in the free state, the protective layer (108) can not contact the side portion (102).

[0025] In some possible implementations, the protective layer (108) can be made of foam.

[0026] In the present application, the protective layer is made of foam, which is beneficial to reducing the cost of the protective layer and simplifying the installation of the protective layer.

[0027] In some possible implementations, the protective layer (108) can be made of silicone.

[0028] In this application, the protective layer is made of silicone, which gives the protective layer good elasticity and vibration damping effect, and can effectively alleviate the vibration of the backlight light guide component.

[0029] In some possible implementations, the protective layer (108) can be made using a dispensing process.

[0030] In this application, the protective layer is made using a dispensing process, eliminating the need for additional backing adhesive on the protective layer, which helps improve the bonding efficiency of the protective layer on the surface of the display module.

[0031] In some possible implementations, the width of the protective layer (108) can be greater than the height of the protective layer (108).

[0032] In real-world scenarios, when the height (or thickness) of the protective layer is greater than its width, it is prone to unexpected tipping or deformation under external conditions such as gravity and vibration. This application utilizes a wider protective layer to reduce or even prevent unexpected deformation caused by external conditions, thus minimizing user complaints about product quality.

[0033] In some possible implementations, the display device (100) includes a plurality of protective layers (108) distributed circumferentially along the liquid crystal panel (104).

[0034] In actual production, if the protective layer is too long, wrinkles and distortions can easily occur when bonding it to the LCD panel. In this application, multiple protective layers are intermittently arranged along the periphery of the LCD panel, which helps reduce the difficulty of bonding the protective layers and improves product quality and consistency.

[0035] In some possible implementations, the display device (100) may have a protective layer at at least one location on the liquid crystal panel (104), for example, a protective layer (108) may be provided on the top side and the bottom side of the liquid crystal panel (104).

[0036] For in-vehicle display devices, the external vibrations they experience are closely related to the vehicle's motion. Due to the vehicle's movement, the vibration amplitude on the top and bottom sides is often more severe than that on the left and right sides. In this application, by providing protective layers on the top and bottom sides of the LCD panel, the total length of the protective layers in the display device can be reduced while effectively preventing damage to the LCD panel.

[0037] In some possible implementation manners, a plurality of protective layers (108) can be arranged on the top side of the liquid crystal panel (104) at intervals, and / or a plurality of protective layers (108) can be arranged on the bottom side of the liquid crystal panel (104) at intervals.

[0038] For the backlight light guide assembly, when the backlight light guide assembly jumps, the difference in the jumping amplitude at adjacent positions is small. In this application, by arranging the protective layers at intervals, the total length of the protective layers arranged in the display device can be further reduced while the limiting and damping functions of the protective layers are ensured.

[0039] In some possible implementation manners, the lateral distance between the first side of the protective layer (108) and the second side of the shielding layer (107) is less than or equal to 1 mm.

[0040] On the one hand, it is difficult to arrange a protective layer that is too wide due to the width of the shielding layer; on the other hand, although a narrower protective layer is beneficial to avoiding exposure to the field of view of a user at an inclined viewing angle, if the protective layer is too narrow, the damping performance of the protective layer will be affected, which is not conducive to the protection of the liquid crystal panel. In this application, by limiting the upper limit of the lateral distance between the first side of the protective layer and the second side of the shielding layer, even if the width of the shielding layer is small, the protective layer can also have a sufficient width to ensure the damping and limiting functions of the protective layer.

[0041] In some possible implementation manners, the distance between the protective layer (108) and the backlight light guide assembly (105) in the thickness direction of the display device is less than or equal to 0.7 mm.

[0042] In an actual scenario, if the distance between the protective layer and the backlight light guide assembly in the thickness direction of the display device is too large, the backlight light guide assembly will have a large jumpable space. However, due to the material of the protective layer itself, the damping and limiting ability of the protective layer is often limited, and when the jumping amplitude of the backlight light guide assembly is too large, the damping and limiting ability of the protective layer can be exceeded, and it can be difficult to effectively suppress the knocking noise and other phenomena caused by the jumping of the backlight light guide assembly. In this application, when the distance between the protective layer and the backlight light guide assembly is less than or equal to the corresponding threshold value, the jumping of the backlight light guide assembly relative to the liquid crystal panel can be effectively limited.

[0043] In a second aspect, a packaging assembly of a backlight module is provided. The packaging assembly includes a backlight module, the backlight module includes a backlight structure and a backlight light guide assembly (105), the backlight structure includes a bottom (101) and a side (102), and the backlight light guide assembly (105) is connected to the bottom (101) of the backlight structure.

[0044] The packaging assembly further comprises at least one of: a. a packaging bag for vacuum packaging the backlight module; b. a detachable adhesive body (131) for adhering the side portion to the backlight light guide assembly (105); or c. a packaging tray (300) for carrying the backlight module.

[0045] The packaging tray (300) comprises a carrying portion (310) for carrying the backlight module, a surrounding portion (320) arranged at the edge of the carrying portion and protruding from the carrying portion (310), and a buffer groove (330) extending along the thickness direction of the packaging tray (300) to have a preset distance between the carrying portions (310) of two adjacent packaging trays (300) stacked together. The carrying portion (310) comprises a lower protruding structure (311) for limiting the bounce of the backlight light guide assembly (105) of the backlight module carried by the lower packaging tray (300) when the two adjacent packaging trays (300) are stacked together.

[0046] In some possible implementation manners, the backlight light guide assembly (105) can comprise a film assembly (1051) and a light guide plate (1052), and the side surface of the light guide plate (1052) can be provided with a protruding portion (1053), and the side portion (102) of the backlight structure can be provided with a limiting portion (1021) matched with the protruding portion (1053).

[0047] In some possible implementation manners, the surface of the backlight light guide assembly (105) can be provided with a release film, and the detachable adhesive body (131) can be adhered to the backlight light guide assembly (105) through the release film.

[0048] In a third aspect, a cockpit is provided, which can comprise the display device in the first aspect and any possible implementation manner thereof.

[0049] In a fourth aspect, an intelligent driving device is provided, which can comprise the display device in the first aspect and any possible implementation manner thereof, or can comprise the cockpit in the third aspect and any possible implementation manner thereof. BRIEF DESCRIPTION OF DRAWINGS

[0050] FIG. 1 is a structural schematic diagram of a display screen 10 of a tablet computer;

[0051] FIG. 2 is a structural schematic diagram of a display device 20;

[0052] FIG. 3 is a structural schematic diagram of a display device 100 provided by an embodiment of the present application;

[0053] FIG. 4 is a schematic diagram of an adhesive manner of a glass cover plate 103 and a side portion 102 provided by an embodiment of the present application.

[0054] FIG. 5 is a structural schematic diagram of the backlight light guide assembly 105 according to an embodiment of the present application;

[0055] FIG. 6 is another structural schematic diagram of the backlight light guide assembly 105 according to an embodiment of the present application;

[0056] FIG. 7 is a schematic diagram of an arrangement of the protective layer 108 according to an embodiment of the present application;

[0057] FIG. 8 is another schematic diagram of an arrangement of the protective layer 108 according to an embodiment of the present application;

[0058] FIG. 9 is a schematic diagram of a packaging manner of a backlight module according to an embodiment of the present application;

[0059] FIG. 10 is another schematic diagram of a packaging manner of a backlight module according to an embodiment of the present application;

[0060] FIG. 11 is another schematic diagram of a packaging manner of a backlight module according to an embodiment of the present application. DETAILED DESCRIPTION

[0061] The technical solutions in the present application will be described below with reference to the accompanying drawings.

[0062] To meet the use requirements of different application scenarios, different types of display devices often have different structures. For example, due to the limited activity range of people, the ambient temperature of a tablet computer in actual use is often less than 65 degrees Celsius (℃); while under the condition of direct sunlight in summer, the blackboard temperature in the vehicle central control area can be as high as 90℃. In terms of the ambient temperature of the display device, the vehicle display device such as the central control screen will be more severe than the tablet computer. In addition, the vibration caused by the power assembly, road excitation and other factors will also be transmitted to the arrangement area of the vehicle display device. Therefore, compared with the tablet computer, the vehicle display device will be in a poor environmental condition; even if the same / similar type of liquid crystal panel is used, the difference in environmental conditions will lead to obvious differences in structure between the two.

[0063] Assuming that both the tablet computer and the vehicle display device use a liquid crystal display screen (LCD), the structures of the tablet computer and the vehicle display device will be described below with reference to FIGS. 1 and 2.

[0064] For example, FIG. 1 is a structural schematic diagram of a display screen 10 of a tablet computer.

[0065] As shown in FIG. 1, the display screen 10 of the tablet computer can include a bottom plate 11, a side plate 12, a glass cover plate 13, a liquid crystal panel 14, and a backlight light guide assembly 15. The glass cover plate 13 can be bonded to the liquid crystal panel 14 through an adhesive layer 16. The side plate 12 can include a stepped structure for disposing the liquid crystal panel 14. An adhesive tape 17 can bond the upper surface of the liquid crystal panel 14 to the side surface of the side plate 12, thereby fixing the liquid crystal panel 14. The backlight light guide assembly 15 can include a light guide plate and a film. The light guide plate can be bonded to the bottom plate 11, and the side plate 12 can be bonded to the stepped structure of the side plate 12 through an adhesive tape 18. The film can be bonded to the light guide plate only at one side edge. For the display screen 10, the bottom plate 11, the side plate 12, the backlight light guide assembly 15, and the adhesive tape 18 for sealing can constitute a backlight module of the display screen 10.

[0066] Exemplarily, FIG. 2 is a structural schematic diagram of a display device 20.

[0067] The display device 20 can be arranged on a vehicle. In some embodiments, the display device 20 can be arranged on the front row of the vehicle, for example, the display device 20 can correspond to the instrument screen, the central control screen, or the co-pilot screen of the vehicle. In other embodiments, the display device 20 can also be arranged at other positions, for example, the display device 20 can correspond to the display screen of the rear row of the vehicle.

[0068] Similar to the display screen 10, the display device 20 can include a bottom plate 21, a side plate 22, a glass cover plate 23, a liquid crystal panel 24, and a backlight light guide assembly 25.

[0069] Compared with the display screen 10, on the one hand, the glass cover plate and the liquid crystal panel included in the display device 20 can have a larger size, thereby causing a larger inertial force; on the other hand, the temperature and vibration conditions of the display device 20 are more severe.

[0070] Assuming that the film in the backlight light guide assembly in the display screen 10 and the display device 20 can be bonded to the light guide plate only at one side edge. For the display screen 10, since the external vibration is relatively small, the jumping amplitude of the free end of the film (i.e. the end not bonded to the light guide plate) is small, and the impact between the free end of the film and the liquid crystal panel can be ignored. However, for the display device 20, the thermal expansion and contraction caused by the ambient temperature, and the vibration / jumping of the components caused by the external vibration, can all cause the position of the upper surface of the backlight light guide assembly 25 (i.e. the surface facing the liquid crystal panel 24) to change; in the case of excessive jumping amplitude, the film in the backlight light guide assembly 25 can even collide with the liquid crystal panel 24, thereby causing damage to the liquid crystal panel 24. In view of this, in the display device 20, a middle frame (28, 29) can be provided between the liquid crystal panel 24 and the backlight light guide assembly 25 to cope with the effects of temperature, vibration and the like.

[0071] For example, as shown in (a) of FIG. 2, the display device 20 can include a middle frame 28 (also referred to as middle sheet metal 28) made of sheet metal. One end of the middle frame 28 can be provided on the side plate 22; the other end of the middle frame 28 can be provided suspended between the backlight light guide assembly 25 and the liquid crystal panel 24 to limit the jumping amplitude of the backlight light guide assembly 25. When the backlight light guide assembly 25 jumps too much, it will collide with the middle frame 28 without colliding with the liquid crystal panel 24, thereby protecting the liquid crystal panel 24.

[0072] For another example, as shown in (b) of FIG. 2, the display device 20 can include a middle frame 29, one end of which can be provided outside the side plate 22; the other end of the middle frame 29 can be provided suspended between the backlight light guide assembly 25 and the liquid crystal panel 24 to serve as a limiting and isolating function. In some embodiments, the middle frame 29 can be made of plastic material.

[0073] In the structure shown in FIG. 2, the frame width (denoted as D) of the display device 20 can include the distance between the end of the glass cover plate 23 to the end of the shielding layer 27 of the liquid crystal panel 24; the size of the frame width will directly affect the screen-to-body ratio of the display device 20. In order to make the display device 20 aesthetically pleasing and functional, the suspended end of the middle frame (28, 29) is often arranged within the shielding range of the shielding layer 27; however, due to the size of the middle frame 28 / 29 itself, and the gap between the middle frame 28 / 29 and the surrounding components (such as the gap necessary to cope with the thermal expansion and contraction of the components), the frame width is often large, making it difficult to achieve an extremely narrow frame effect.

[0074] In view of this, the embodiments of the present application provide a display device, which can reduce the frame width and improve the screen-to-body ratio by improving the limiting structure between the backlight light guide assembly and the liquid crystal panel.

[0075] Fig. 3 is a structural schematic diagram of a display device 100 according to an embodiment of the present application.

[0076] As shown in (a) of Fig. 3, the display device 100 can have a top side, a bottom side, a left side and a right side; the display device 100 can also include a front side and a back side. The front side of the display device can refer to the side of the display device facing a user and displaying a screen / interface to the user. Accordingly, the back side can refer to the side of the display device facing away from the user in this case; the top side can refer to the upper side of the display device in this case; the bottom side can refer to the lower side of the display device in this case; the left side and the right side can refer to the sides of the display device on the left and right of the user in this case, respectively. The description of the top side, the bottom side, the left side and the right side can also apply to the constituent parts of the display device 100.

[0077] As shown in (b) of Fig. 3, the display device 100 can include a backlight structure, a glass cover plate 103, a liquid crystal panel 104, a backlight light guide assembly 105 and a protective layer 108. The backlight structure and the backlight light guide assembly 105 can constitute a backlight module of the display device 100. (b) of Fig. 3 can be understood as a cross-sectional view of the display device 100 at a certain position, which can show the positional relationship of the above-mentioned constituent parts in the thickness direction of the display device 100. For example, (b) of Fig. 3 can be understood as a cross-sectional view at a certain position on the top side, the bottom side, the left side or the right side of the display device 100.

[0078] The backlight structure can include a bottom part 101 and a side part 102. In some embodiments, the backlight structure can be made by an integral molding process; in this case, the bottom part 101 and the side part 102 of the backlight structure belong to different parts of the same part. In other embodiments, the backlight structure can be assembled by multiple parts; in this case, the bottom part 101 and the side part 102 of the backlight structure can belong to different parts.

[0079] For example, the bottom part 101 of the backlight structure can be rectangular. For example, the backlight structure can have the side part 102 around the bottom part 101; the side parts 102 can be arranged on two pairs of opposite sides of the rectangle. That is, four side parts 102 can be arranged along the four sides of the bottom part 101 of the backlight structure on the top side, the bottom side, the left side and the right side; the structures of the side parts can be the same or different; adjacent side parts can be connected to each other or disconnected.

[0080] The glass cover plate 103 can be bonded with the side portion 102 of the backlight structure. For example, as shown in FIG. 2, the glass cover plate 103 can be bonded with the side portion 102 of the backlight structure through the bonding layer 106.

[0081] In the thickness direction of the display device 100, the bottom portion 101 and the glass cover plate 103 of the backlight structure can be respectively arranged at two ends of the display device 100. The liquid crystal panel 104 can be arranged between the bottom portion 101 and the glass cover plate 103, and connected with the glass cover plate 103; the backlight light guide assembly 105 can also be arranged between the bottom portion 101 and the glass cover plate 103, and arranged close to the bottom portion 101. For example, in the thickness direction of the display device 100, the backlight light guide assembly 105 can be arranged at one end where the bottom portion 101 is arranged; the liquid crystal panel 104 can be arranged at one end where the glass cover plate 103 is arranged. For another example, regarding the fixation of the backlight light guide assembly 105, the backlight light guide assembly 105 can be bonded with the bottom portion 101 through the back adhesive, connected with the bottom portion 101 through the fastener such as a bolt, or can be clamped to the bottom portion 101 or the side portion 102.

[0082] The liquid crystal panel 104 can include a shielding layer 107 arranged at the edge region thereof. The liquid crystal panel 104 can also include an active area (AA) arranged at the central region thereof.

[0083] For example, as shown in (b) of FIG. 3, the shielding layer 107 can be embedded in the liquid crystal panel 104, and can be arranged at the edge region of the liquid crystal panel 104 in a circumferential direction. For another example, the shielding layer 107 can be black. For yet another example, the boundary of the shielding layer 107 close to the central region of the liquid crystal panel 104 can serve as the boundary of the AA region.

[0084] For example, as shown in (b) of FIG. 3, the cross section of the protective layer 108 can be rectangular. In some possible implementations, the cross section of the protective layer 108 can be other regular or irregular shapes, such as the cross section of the protective layer 108 can be trapezoidal, triangular, or the like, as shown in (c)-(f) of FIG. 3.

[0085] For ease of explanation, the technical content related to the protective layer 108 (such as the arrangement position, etc.) is exemplarily described below by taking the cross section shape of the protective layer 108 as rectangular as an example; the technical content related to the protective layer 108 can also be applicable to other cross section shapes, which are uniformly described herein and will not be introduced separately hereinafter.

[0086] The protective layer 108 can be arranged within the shielding range of the shielding layer 107. For example, the shielding range of the shielding layer 107 can include the projection region of the shielding layer 107 in the thickness direction of the display device 100.

[0087] For ease of illustration, the side of the protective layer 108 close to the central region of the liquid crystal panel 104 can be referred to as the first side of the protective layer, the side of the shielding layer 107 close to the central region of the liquid crystal panel 104 can be referred to as the second side of the shielding layer, the side of the protective layer 108 away from the central region of the liquid crystal panel 104 can be referred to as the third side of the protective layer, and the side of the shielding layer 107 away from the central region of the liquid crystal panel 104 can be referred to as the fourth side of the shielding layer.

[0088] It can be understood that, in the free state, if the first side of the protective layer 108 (for example, the side of the protective layer 108 away from the side portion 102 of the backlight structure, as shown in (b) of FIG. 3) is within the projection region, even if the third side of the protective layer 108 (for example, the side of the protective layer 108 close to the side portion 102 of the backlight structure, as shown in (b) of FIG. 3) is beyond the projection region, the protective layer 108 will not affect the frame width and display function of the display device 100. Thus, when the first side of the protective layer 108 is within the projection region, it can be considered that the protective layer 108 is within the shielding range of the shielding layer 107; when the first side of the protective layer 108 is beyond the projection region, it can be considered that the protective layer 108 is beyond the shielding range of the shielding layer 107. That is, when judging whether the protective layer 108 is within the shielding range of the shielding layer 107, it can be judged according to whether the first side of the protective layer 108 is within the projection region, and it can not be necessary to consider whether the third side of the protective layer 108 is within the projection region.

[0089] In some embodiments, the outer edge of the shielding layer 107 (i.e., the side of the shielding layer 107 close to the side portion 102) can be flush with the outer edge of the liquid crystal panel 104, and the shielding layer 107 can extend from the outer edge of the liquid crystal panel 104 to the central region of the liquid crystal panel 104, as shown in FIG. 3.

[0090] For example, as shown in (b) of FIG. 3, the outer edge of the protective layer 108 (i.e., the side of the protective layer 108 close to the side portion 102) can be flush with the outer edge of the liquid crystal panel 104, and the protective layer 108 can extend from the outer edge to the central region of the liquid crystal panel 104; the side of the protective layer 108 close to the central region of the liquid crystal panel 104 can be within the projection region of the shielding layer 107. For another example, the outer edge of the protective layer 108 can slightly exceed the outer edge of the liquid crystal panel 104, and the protective layer 108 is not in contact with the side portion 102 in the free state; the side of the protective layer 108 close to the liquid crystal panel 104 can be arranged within the shielding range of the shielding layer 107.

[0091] In some other embodiments, the outer edge of the shielding layer 107 can be closer to the central region of the liquid crystal panel 104 than the outer edge of the liquid crystal panel 104; that is, there can be a gap between the outer edge of the shielding layer 107 and the outer edge of the liquid crystal panel 104. The outer edge of the protective layer 108 can be within the projection region of the shielding layer 107; or the outer edge of the protective layer 108 can be outside the projection region of the shielding layer 107. For example, the outer edge of the protective layer 108 can be flush with the outer edge of the liquid crystal panel 104, or can extend beyond the outer edge of the liquid crystal panel 104 and leave a gap between the side portion 102 in a free state.

[0092] For example, the protective layer 108 can be between the liquid crystal panel 104 and the backlight light guide assembly 105 in the thickness direction of the display device 100.

[0093] In one embodiment, the protective layer 108 can be made of silica gel, which can play a role in reducing vibration and buffering.

[0094] In one embodiment, the protective layer 108 can be made of foam.

[0095] In the embodiments of the present application, the use of foam can help reduce the cost of the protective layer 108 and simplify the installation of the protective layer.

[0096] In another embodiment, the protective layer 108 can be implemented by an adhesive. For example, the adhesive can be coated on the lower surface of the liquid crystal panel 104 by a dispensing process; and the adhesive can form an adhesive body after curing (such as natural curing, ultraviolet curing, thermal curing, etc.). For example, the cross section of the protective layer 108 made by the dispensing process can have an irregular shape, as shown in (e) of FIG. 3.

[0097] In actual use, since the protective layer 108 is between the liquid crystal panel 104 and the backlight light guide assembly 105, when the backlight light guide assembly 105 expands due to heat or jumps due to vibration, the backlight light guide assembly 105 will not directly contact the liquid crystal panel 104, but will contact the protective layer 108. In this way, the liquid crystal panel 104 can be prevented from being damaged by impact. In addition, since the protective layer 108 is arranged within the shielding range of the shielding layer, it will not interfere with the normal operation of the AA area.

[0098] The structure of the display device 100 is exemplarily described above in combination with FIG. 3. The structure of some components and / or the positional relationship between some components are exemplarily described below in combination with FIG. 4 to FIG. 8. In FIG. 4, the bonding manner between the glass cover plate 103 and the side portion 102 of the backlight structure is exemplarily introduced; in FIG. 5 and FIG. 6, several possible structures of the backlight light guide assembly 105 are exemplarily introduced; in FIG. 7 and FIG. 8, several possible arrangements of the protective layer 108 are exemplarily introduced.

[0099] Exemplarily, FIG. 4 is a schematic diagram of the bonding manner between the glass cover plate 103 and the side portion 102 of the backlight structure according to an embodiment of the present application.

[0100] In one embodiment, as shown in (a) of FIG. 4, the glass cover plate 103 can be connected to the upper surface of the side portion 102 of the backlight structure through the bonding layer 106. In this case, the side portion 102 of the backlight structure can provide support force for the glass cover plate 103 through its upper surface, and can provide holding force for the glass cover plate 103 through the bonding layer 106 to avoid the glass cover plate 103 from falling off.

[0101] For example, as shown in (a) of FIG. 4, the width of the bonding layer 106 can be less than the width of the upper surface of the side portion 102, so as to avoid the bonding layer 106 from exceeding the side portion 102. If the bonding layer 106 is arranged too wide, the service life of the backlight light guide assembly can be affected. Assuming that the bonding layer 106 not only covers the upper surface of the side portion 102, but also extends laterally to the liquid crystal panel 104 and even further extends longitudinally to the position where the protective layer 108 is located; in this case, the backlight light guide assembly 105 can have the risk of being bonded to the bonding layer 106 when jumping, which will cause the backlight light guide assembly 105 to be subjected to additional stress, affecting the service life of the backlight light guide assembly 105.

[0102] For another example, when the glass cover plate 103 is arranged in the manner as shown in (a) of FIG. 4, the structure of the display device 100 can be as shown in (b) of FIG. 3.

[0103] In yet another embodiment, the side portion 102 of the backlight structure can be provided with a stepped support structure, which can be used to arrange the glass cover plate, as shown in (b) to (d) of FIG. 4. For example, the side surface of the liquid crystal panel 104 can be bonded to the support structure through the bonding layer 106, as shown in (b) of FIG. 4. For another example, the lower surface of the liquid crystal panel 104 can be bonded to the stepped surface of the support structure through the bonding layer 106, as shown in (c) of FIG. 4. For yet another example, the side surface and the lower surface of the liquid crystal panel 104 can be bonded to the support structure through the same / different bonding layer 106, as shown in (d) of FIG. 4.

[0104] It can be understood that, compared to (a) in FIG. 4, in the case where the stepped support structure is arranged on the side portion 102, the display device frame width D also needs to consider one or more of the following factors: the width of the portion of the side portion 102 outside the support structure, the thickness of the bonding layer 106, the lateral gap between the side portion 102 and the liquid crystal panel 104. The above factors will cause the frame width to increase, which is not conducive to the design of an extremely narrow frame.

[0105] The above describes several arrangements of the glass cover plate 103 in combination with FIG. 4, and the structure of the backlight light guide assembly 105 is exemplarily described in combination with FIG. 5 and FIG. 6.

[0106] Exemplarily, the backlight light guide assembly 105 can include a film assembly 1051 and a light guide plate 1052. The display device 100 can also include a light source such as a light bar (not shown in the figure). The light bar can be arranged on the side of the light guide plate 1052; the side of the light guide plate 1052 close to the light bar can be used for light to enter, and the light guide plate 1052 can guide the light to exit from one side of the film assembly 1051; the film assembly 1051 can guide the light to exit towards the liquid crystal panel 104, thereby being able to provide a light source for the liquid crystal panel 104.

[0107] FIG. 5 is a structural schematic diagram of the backlight light guide assembly 105 provided by an embodiment of the present application. In FIG. 5, the same perspective as (b) in FIG. 3 is adopted; FIG. 5 only shows the backlight structure and the backlight light guide assembly 105.

[0108] As shown in FIG. 5, in the thickness direction of the display device 100, the light guide plate 1052 can be arranged close to the bottom portion 101 of the backlight structure; and the film assembly 1051 can be arranged above the light guide plate 1052, i.e., close to the liquid crystal panel 104.

[0109] In some possible implementation manners, the backlight light guide assembly 105 can also include other components such as a reflective film. The reflective film can be arranged below the light guide plate 1052, i.e., close to the bottom portion 101 of the backlight structure.

[0110] In actual scenarios, compared to the film assembly 1051, the thickness and weight of the light guide plate 1052 are relatively large, and the light guide plate 1052 is more susceptible to external vibration; and the movement of the light guide plate 1052 will drive the film assembly 1051 to displace.

[0111] In some possible implementation manners, the light guide plate 1052 can be provided with a protruding portion 1053, which can be directed towards the side portion 102 of the backlight structure; correspondingly, the side portion 102 can be provided with a limiting structure 1021 matched with the protruding portion 1053. The protruding portion 1053 and the corresponding limiting structure 1021 are exemplarily described in combination with FIG. 6.

[0112] For example, FIG. 6 is another structural schematic diagram of the backlight light guide assembly 105 according to an embodiment of the present application. In FIG. 6, (a) and (b) are the same view as (b) in FIG. 3; (c) and (d) are top views; and (a) to (d) only show the backlight structure and the light guide plate 1052.

[0113] In some embodiments, the limiting structure 1021 can include a through hole arranged on the side 102, and the protruding part 1053 can be arranged in the through hole, as shown in (a) of FIG. 6.

[0114] In yet other embodiments, the limiting structure 1021 can include a blind hole arranged on the side 102, and the protruding part 1053 can be arranged in the blind hole, as shown in (b) of FIG. 6. For example, a cross-sectional view at position A-A in (b) of FIG. 6 can be as shown in (c) and (d) of FIG. 6.

[0115] The through hole / blind hole can be circular, elliptical, rectangular, or other regular or irregular shapes. For the light guide plate 1052, at least one of the top side, the bottom side, the left side, and the right side can be provided with the protruding part 1053; correspondingly, the backlight structure can be provided with the side 102 on the top side, the bottom side, the left side, and the right side, respectively, and the corresponding side 102 can have the limiting structure 1021 matched with the protruding part 1053. The limiting structure 1021 can limit the movement of the protruding part 1053 in at least one degree of freedom.

[0116] For example, the light guide plate 1052 can be provided with the protruding part 1053 on multiple sides, respectively; correspondingly, the corresponding multiple sides 102 can be provided with the limiting structure 1021 matched therewith. The protruding parts 1053 at different positions of the light guide plate 1052 can have the same structure or different structures; similarly, the different limiting structures 1021 can be the same or different.

[0117] In the embodiments of the present application, by arranging the protruding part 1053 on the light guide plate 1052 and arranging the limiting structure 1021 matched therewith on the side 102 of the backlight structure, the movement of the light guide plate 1052 can be limited in at least one degree of freedom, and the jumping of the membrane assembly 1051 and the backlight light guide assembly 105 can be reduced.

[0118] In some possible implementations, the light guide plate 1052 can be provided with the protruding part 1053 only on the top side. For example, the light guide plate 1052 can be provided with one to multiple protruding parts 1053 on the top side; correspondingly, the side 102 on the top side of the backlight structure can be provided with one to multiple limiting structures 1021, as shown in (c) and (d) of FIG. 6.

[0119] In the case that the display device 100 is placed vertically, the light guide plate 1052 can contact the backlight structure under the action of gravity, on the one hand, the friction generated thereby can hinder the jumping of the light guide plate 1052 on the ground side relative to the liquid crystal panel 104, on the other hand, it can cause the jumping of the light guide plate 1052 on the sky side to be larger. In the embodiment of the present application, by setting the protruding part 1053 on the sky side of the light guide plate, the jumping amplitude of the light guide plate 1052 can be limited without introducing additional installation problems.

[0120] The structure of the backlight light guide assembly 105 is exemplarily described above in combination with FIG. 5 and FIG. 6. The setting manner of the protective layer 108 is exemplarily described below in combination with FIG. 7 and FIG. 8.

[0121] Exemplarily, FIG. 7 is a schematic diagram of the arrangement manner of the protective layer 108 provided by the embodiment of the present application. It is assumed that the front surface of the liquid crystal panel 104 is rectangular, as shown in FIG. 7.

[0122] As shown in (a) of FIG. 7, the shielding layer 107 can be located in the edge region of the liquid crystal panel 104, and the boundary 1071 can be the inner boundary of the shielding range of the shielding layer 107. For example, the region within the boundary 1071 can be the AA region.

[0123] In one embodiment, a continuous protective layer 108 can be arranged along the circumference of the liquid crystal panel 104, as shown in (b) of FIG. 7.

[0124] In another embodiment, a continuous protective layer can be arranged along each side (such as the side of the sky side, the ground side, the left side and the right side) of the circumference of the liquid crystal panel 104, as shown in (c) of FIG. 7.

[0125] In another embodiment, a plurality of protective layers 108 can be discontinuously arranged along the circumference of the liquid crystal panel 104, as shown in (d) of FIG. 7.

[0126] In another embodiment, the protective layer can be arranged along part of the side of the liquid crystal panel 104, and no protective layer is arranged at the other side. For example, a continuous protective layer 108 can be arranged along the side of the sky side and the ground side (i.e. the upper side and the lower side), and no protective layer is arranged at the left side and the right side, that is, the protective layer 108 can be arranged only on the sky side and the ground side, as shown in (e) of FIG. 7.

[0127] The setting manner of the protective layer 108 in (b) to (e) of FIG. 7 above is only an example, and the protective layer can be arranged in other manners. For example, as shown in (f) of FIG. 7, a plurality of protective layers can be discontinuously arranged along part of the side of the liquid crystal panel 104, and no protective layer is arranged at the other side.

[0128] Exemplarily, due to the easy molding of the foam and silica gel, when the protective layer 108 is made of foam, silica gel or the like, the protective layer can be arranged along the side edge of the liquid crystal panel 104 in the manners shown in (b), (c) or (e) of FIG. 7.

[0129] Exemplarily, when the protective layer 108 is made by using the dispensing process, if the length of the adhesive coated at one time is too long, the adhesive is prone to be broken or deformed during the coating and curing process. To avoid this, the adhesive can be discontinuously coated along the side edge of the liquid crystal panel 104, so that the protective layer formed after the adhesive is cured is discontinuously arranged as shown in (d) of FIG. 7. In this way, the difficulty of implementation can be reduced while achieving the limiting protection effect, and the amount of adhesive coated on the surface of the liquid crystal panel 104 can also be reduced.

[0130] Exemplarily, for the protective layer 108, the length direction thereof can be understood as the extension direction along the side edge of the liquid crystal panel 104, or has a component in the extension direction along the side edge of the liquid crystal panel 104; the width direction thereof can be understood as the direction perpendicular to the side edge and parallel to the display interface of the liquid crystal panel; and the height (or thickness) direction thereof can be understood as the normal direction of the liquid crystal panel (i.e., the direction perpendicular to the display interface thereof). For example, referring to (e) of FIG. 7, for the protective layer 108 arranged on the ground side, this figure only shows the length and width of the protective layer 108, and does not show the thickness of the protective layer. For another example, referring to (b) of FIG. 7, the protective layer 108 is annular; in this case, the circumferential dimension of the annular shape can be understood as the total length of the protective layer 108. For another example, (b) to (f) of FIG. 3 only show the width and thickness of the protective layer 108, and do not show the length of the protective layer.

[0131] Exemplarily, FIG. 8 is another schematic view of the arrangement manner of the protective layer 108 provided in the embodiments of the present application. In (a) and (b) of FIG. 8, the protective layer 108 has a cross-sectional shape corresponding to (b) of FIG. 3; in (c) and (d) of FIG. 8, the protective layer 108 has a cross-sectional shape corresponding to (e) of FIG. 3.

[0132] When arranging the protective layer 108, on the one hand, it is desired that the protective layer 108 does not appear in the user's line of sight as much as possible; on the other hand, it is desired that the protective layer 108 can effectively isolate and limit. The following exemplarily describes the two aspects of the requirements in combination with (a) to (d) of FIG. 8.

[0133] As shown in (a) and (c) of FIG. 8, in some scenarios, the user's line of sight may not be perpendicular to the glass cover plate 103 / liquid crystal panel 104 when the user uses the display device 100. Even if the protective layer 108 is within the shielding range of the shielding layer 107, when the user observes the display device 100 at an inclined viewing angle, if the arrangement position of the protective layer 108 is inappropriate, the user will be able to observe the protective layer 108 located behind the liquid crystal panel 104.

[0134] For ease of illustration, one end of the protective layer 108 towards the backlight light guide assembly 105 can be referred to as the first end of the protective layer 108; the longitudinal distance between the first end of the protective layer 108 and the shielding layer 107 can be referred to as the first height; the lateral distance between the first side of the protective layer 108 and the second side of the shielding layer 107 can be referred to as the first lateral distance. The above-mentioned longitudinal distance can be understood as the distance along the thickness direction of the display device 100 / the normal line of the display screen; the above-mentioned lateral distance can be understood as the distance along the width direction of the protective layer 108 / the shielding layer 107. For example, as shown in (a) and (c) of FIG. 8, distance A can correspond to the first height; distance B can correspond to the first lateral distance; distance E can be the height (or thickness) of the protective layer 108, and distance F can be the width of the protective layer 108.

[0135] In some possible implementation manners, the lateral distance between the first side of the protective layer 108 and the second side of the shielding layer 107 can be greater than a threshold value. For example, the threshold value can be 0.2 millimeters (mm), 0.15 mm; or the threshold value can also be set according to the jump of the backlight light guide assembly 105, the high-low temperature deformation characteristics. For another example, the threshold value can be determined in combination with the deformation characteristics of the protective layer 108 and the inclined viewing angle of the user in normal use.

[0136] Since the relative position between the liquid crystal panel and the backlight light guide assembly can change due to environmental temperature, vibration and the like, the protective layer 108 can be deformed under pressure in actual scenarios. If the distance between the first side of the protective layer 108 and the second side of the shielding layer 107 is not reasonably set, the protective layer 108 can exceed the shielding range after deformation, thereby affecting the appearance and screen-to-body ratio of the display device.

[0137] In some possible implementation manners, in a free state, the arrangement position of the protective layer 108 can satisfy the following condition: B≥A*tanθ. Wherein, θ can be an inclined viewing angle; the inclined viewing angle can be understood as the inclination angle of the user's line of sight relative to the normal line of the display screen.

[0138] Exemplarily, the specific value of the oblique viewing angle can be set according to the arrangement position of the display device 100 in the vehicle. For example, when the display device 100 is arranged at a position far from the user's head on the vehicle, the angle value can be 15 degrees, 20 degrees. For another example, when the display device 100 is arranged at a position close to the user's head on the vehicle, the angle value can be 30 degrees, 35 degrees.

[0139] In an actual scenario, if the arrangement position of the protective layer 108 does not satisfy the above condition, when the user observes the display device at the oblique viewing angle in the free state of the protective layer 108, the protective layer 108 behind the liquid crystal panel 104 can be observed, and the user can thereby have doubts or complaints about the quality of the product. In the embodiment of the present application, the relationship between the first lateral distance and the first height is coordinated based on the oblique viewing angle of the user, the possibility of the user observing the protective layer 108 can be reduced, the influence of the setting of the protective layer on the appearance of the display device can be reduced, and the complaints of the user about the quality of the product can be reduced.

[0140] In some embodiments, the oblique viewing angle can be greater than or equal to 30 degrees.

[0141] In some possible implementation manners, the width of the protective layer 108 can be greater than or equal to the height of the protective layer 108. For example, as shown in (a) of FIG. 8, the distance F can be greater than or equal to the distance E.

[0142] In an actual scenario, when the height of the protective layer 108 is greater than the width of the protective layer 108, the protective layer 108 is prone to be tilted / deformed due to external factors such as gravity and vibration. In the free state, even if the arrangement manner of the protective layer 108 can satisfy the condition B≥A*tanθ, after the protective layer 108 is tilted / deformed due to external factors, the shielding effect of the shielding layer 107 on the protective layer 108 will be deteriorated. In the embodiment of the present application, the wider protective layer 108 can reduce or even avoid the unintended deformation of the protective layer 108 due to external vibration, and the complaints of the user about the quality of the product can be reduced.

[0143] In some possible implementation manners, the protective layer 108 can be arranged on the surface of the liquid crystal panel 104 facing the backlight light guide assembly 105. For example, as shown in (a) of FIG. 8, the protective layer 108 can be arranged on the lower surface of the liquid crystal panel 104.

[0144] If the protective layer 108 is arranged on the upper surface of the backlight light guide assembly 105, even if the size of each component of the display device 100 does not change, due to the need to reserve a gap for thermal expansion and contraction between the backlight light guide assembly 105 and the liquid crystal panel 104, the distance A will inevitably increase compared to the scheme shown in (a) of FIG. 8. In this case, if the width of the shielding layer 107 and the protective layer 108 does not change, the user can observe the protective layer 108 behind the liquid crystal panel 104 at a smaller inclined viewing angle; and if the width of the protective layer 108 is reduced, the protective layer 108 can be difficult to provide effective limiting and damping effects. In the embodiments of the present application, the protective layer 108 is arranged on the surface of the liquid crystal panel 104, which is beneficial to reduce the possibility of the user observing the protective layer 108, can reduce the impact of the setting of the protective layer on the appearance of the display device, and can reduce user complaints about product quality.

[0145] As shown in (b) of FIG. 8, it is assumed that the protective layer 108 is arranged on the surface of the liquid crystal panel 104. Due to the influence of the ambient temperature and external vibration, the distance between the liquid crystal panel 104 and the backlight light guide assembly 105 in the thickness direction of the display device 100 will change; as a result, the gap (i.e., the distance G) between the protective layer 108 and the backlight light guide assembly 105 changes.

[0146] In some possible implementation manners, the distance between the protective layer 108 and the backlight light guide assembly 105 in the thickness direction of the display device 100 can be less than or equal to a certain threshold value. For example, as shown in (b) of FIG. 8, the distance G can correspond to the distance between the protective layer 108 and the backlight light guide assembly 105 in the thickness direction of the display device 100. For another example, the threshold value can be 0.7 mm; or the threshold value (such as 0.6 mm) can also be set according to the requirements of the bounce of the backlight light guide assembly 105 and the high-low temperature deformation characteristics. In one example, the distance G can be 0.5 mm or 0.4 mm.

[0147] If the distance G is not reasonably set, the backlight light guide assembly 105 will have a larger bounce space. Since the damping and limiting ability of the protective layer 108 is limited by the material it adopts itself, if the bounce amplitude of the backlight light guide assembly 105 is too large, it can exceed the damping and limiting ability of the protective layer 108, and it can be difficult to effectively suppress the knocking noise and other phenomena caused by the bounce. In the embodiments of the present application, when the distance between the protective layer 108 and the backlight light guide assembly 105 is less than or equal to the corresponding threshold value, the bounce of the display backlight light guide assembly 105 relative to the liquid crystal panel 104 can be effectively limited.

[0148] In some possible implementation manners, the protective layer 108 can not be in contact with the backlight light guide assembly 105 in a free state.

[0149] Since the relative position between the liquid crystal panel 104 and the backlight light guide assembly 105 can change due to environmental temperature, vibration, etc., if the protective layer 108 is in contact with the backlight light guide assembly 105 in a free state, the protective layer 108 can be in a deformed state for a long time under the influence of external factors, so that its shape is difficult to recover by itself, which reflects the decline of its damping and protection performance. In the embodiment of the application, when there is a gap between the protective layer 108 and the backlight light guide assembly 105 in a free state, even if the relative position between the liquid crystal panel 104 and the backlight light guide assembly 105 changes due to external factors, the protective layer 108 is easy to maintain in an elastically deformed state, which is conducive to long-term effective maintenance of the protection performance of the protective layer 108.

[0150] In some possible implementation manners, the protective layer 108 can not be in contact with the side portion 102 of the backlight structure in a free state.

[0151] In some possible implementation manners, the lateral distance between the first side of the protective layer 108 and the second side of the shielding layer 107 can be less than or equal to a certain threshold value. For example, the threshold value can be 1 mm, 1.2 mm. For another example, in order to guarantee the damping and limiting functions of the protective layer 108, the protective layer 108 needs to have sufficient width; in the case that the width of the shielding layer 107 is certain, by setting the upper limit value of the lateral distance, it is conducive to guaranteeing the width of the protective layer 108.

[0152] The structure of the display device 100 and part of the constituent members is exemplarily described above in combination with FIGS. 3 to 8. The packaging manner of each constituent member of the display device in a production environment is exemplarily described below.

[0153] In actual production, the display device can be divided into a display module and a backlight module. For example, for the display device 20, the backlight module can include the bottom plate 21, the side plate 22, the backlight light guide assembly 25, and the middle frame (28, 29); the display module can include the glass cover plate 23 and the liquid crystal panel 24; by arranging the adhesive layer 26 between the display module and the backlight module, the two can be assembled into the display device 20. For another example, for the display device 100, the backlight module includes the backlight structure and the backlight light guide assembly 105, and does not include the middle frame (28, 29).

[0154] The assembly process of the display device can include two links (link #1 and link #2). In link #1, the assembly of the backlight module can be completed in one place; and then, in link #2, the display module and the backlight module are bonded through the adhesive layer 106 in another place to complete the assembly process of the display device. The two different places can be different workstations, production lines or even factories.

[0155] Since the link #1 and the link #2 are performed in different places, the packaging and transportation of the backlight module will be involved between the link #1 and the link #2. The packaging mode of the backlight module is exemplarily described below in combination with FIG. 9.

[0156] Exemplarily, FIG. 9 is a schematic diagram of a packaging mode of a backlight module provided by an embodiment of the present application. As shown in FIG. 9, the packaging tray 200 can be used to carry the backlight module to realize the packaging and transportation of the backlight module.

[0157] As shown in (a) of FIG. 9, the packaging tray 200 can include a carrying part 210, an enclosing part 220 and a buffer groove 230. The carrying part 210 can be arranged in the middle region of the packaging tray 200, the enclosing part 220 can be arranged at the edge of the carrying part 210 and protrude from the carrying part 210, and the buffer groove 230 can be a circumferentially expanding groove to enable the carrying parts of two stacked packaging trays 200 to have a preset distance.

[0158] As shown in (b) of FIG. 9, the tray A and the tray B can be stacked, and the tray A and the tray B can correspond to the packaging tray 200. The backlight module can be arranged between the carrying part of the tray B and the carrying part of the tray A. In this case, the carrying part of the tray B can carry the backlight module, and the enclosing part of the tray B can limit the lateral movement of the backlight module.

[0159] For the display device 20, the middle frame (28, 29) is arranged in the backlight module thereof. When the tray B is used to transport the backlight module, even if the backlight module has a large bounce, the bounce range of the backlight light guide assembly 25 will not be large due to the limiting effect of the middle frame (28, 29).

[0160] However, for the display device 100, the middle frame is not included in the backlight module thereof. When the tray B is used to transport the backlight module, the bounce range of the backlight light guide assembly 105 will be large, and the backlight light guide assembly 105 can be damaged by colliding with the bottom of the tray A. In order to prevent the backlight light guide assembly 105 from being damaged during transportation, the packaging mode of the backlight module can be adjusted.

[0161] In some possible implementation manners, the structure of the packaging tray can be adjusted to reduce the bounce range of the backlight light guide assembly 105.

[0162] Exemplarily, FIG. 10 is a schematic diagram of another packaging mode of a backlight module provided by an embodiment of the present application. As shown in FIG. 10, the packaging tray 300 can be used to carry the backlight module of the display device 100.

[0163] As shown in (a) of FIG. 10, the packaging tray 300 can include a bearing portion 310, an enclosing portion 320, and a buffer groove 330. Compared with the bearing portion 210, the middle region of the bearing portion 310 is provided with a lower protruding structure 311.

[0164] As shown in (b) of FIG. 10, the tray C and the tray D can be understood as two adjacent packaging trays 300 stacked and placed. The backlight module of the display device 100 can be arranged between the bearing portion of the tray C and the bearing portion of the tray D. The bearing portion of the tray D can bear the backlight module; the enclosing portion of the tray D can limit the lateral movement of the backlight module; and the lower protruding structure of the bearing portion of the tray C can limit the bounce of the backlight light guide assembly 105 in the backlight module.

[0165] In some possible implementation manners, for the backlight module of the display device 100, a vacuum packaging bag can be additionally arranged. For example, before transporting the backlight module, the vacuum packaging bag can be used to package the backlight module; and then, the packaged backlight module can be carried by the packaging tray 200, 300 to realize the transportation of the backlight module. Before the link #2, the vacuum packaging bag can be removed.

[0166] Since the vacuum packaging bag can limit the relative position change of each component in the backlight module, in this way, the bounce of the backlight light guide assembly 105 in the process of transporting the backlight module can be reduced.

[0167] In some possible implementation manners, for the backlight module of the display device 100, a detachable adhesive body 131 can be additionally arranged to limit the bounce of the backlight light guide assembly 105. For example, before transporting the backlight module, the detachable adhesive body 131 can be arranged in the backlight module, and the adhesive body 131 can adhere the side portion 102 of the backlight structure member to the backlight light guide assembly 105, as shown in FIG. 11; and then, the packaging tray 200, 300 can be used to transport the backlight module. Before the link #2, the adhesive body 131 can be removed.

[0168] In the embodiments of the present application, by arranging the detachable adhesive body 131, the bounce of the backlight light guide assembly 105 in the process of transporting the backlight module can be reduced to a certain extent.

[0169] For the adhesive body 131, when the adhesive body 131 is adhered to the surface of the backlight light guide assembly 105 or removed from the surface of the backlight light guide assembly 105, if the operation is improper, the surface of the backlight light guide assembly 105 can be contaminated.

[0170] In some embodiments, before transporting the backlight module, a release film can be arranged on the surface of the backlight light guide assembly 105; and the detachable adhesive body 131 can be adhered to the backlight light guide assembly 105 through the release film.

[0171] The packaging manner of the backlight module is exemplarily described above in combination with FIGS. 9-11.

[0172] The embodiment of the present application further provides a packaging assembly of a backlight module, which can include the backlight module of the display device 100, and can further include at least one of the following: a packaging bag for packaging the backlight module in a vacuumized manner; a detachable bonding body 131 for bonding the side portion 102 of the backlight structure member with the backlight light guide assembly 105; or, c. a packaging tray 300 for carrying the backlight module.

[0173] The embodiment of the present application further provides a cockpit, which can include any one of the display devices in FIGS. 3-8.

[0174] The embodiment of the present application further provides an intelligent driving device, which can include any one of the display devices in FIGS. 3-8, or can include the cockpit described above.

[0175] The intelligent driving device mentioned in the present application can include a road vehicle, a water vehicle, an air vehicle, an industrial device, an agricultural device, or an entertainment device, etc. For example, the intelligent driving device can be a vehicle, which is a general concept of a vehicle, and can be a traffic tool (such as a commercial vehicle, a passenger vehicle, a motorcycle, a flying vehicle, a train, etc.), an industrial vehicle (such as a forklift, a trailer, a tractor, etc.), an engineering vehicle (such as an excavator, a bulldozer, a crane, etc.), an agricultural device (such as a mower, a harvester, etc.), an entertainment device, a toy vehicle, etc. The type of the vehicle is not limited in the embodiment of the present application. For example, the vehicle in the present application can include a pure electric vehicle (pure EV / battery EV), a hybrid electric vehicle (HEV), a range extended electric vehicle (REEV), a plug-in hybrid electric vehicle (PHEV), or a new energy vehicle (NEV), etc.

[0176] The technical solution disclosed in the present application can be applied to a vehicle-mounted display device, for example, the display device 100 can correspond to a central control screen, a co-driver screen, a rear display screen, etc.

[0177] The technical solution disclosed in the present application can also be applied to other electronic devices, such as a computer display screen, a display screen of a household appliance, etc.

[0178] Those skilled in the art can clearly understand that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0179] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

[0180] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the above-described device embodiments are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0181] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0182] In addition, each functional unit in each embodiment of the present application can be integrated into a processing unit, or each unit can exist physically, or two or more units can be integrated into one unit.

[0183] The above is only a specific implementation 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 scope disclosed in the present application, which should be covered in 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 device (100), characterized in that, the display device (100) comprises a backlight structure, a glass cover plate (103), a liquid crystal panel (104), a backlight light guide assembly (105) and a protective layer (108); the backlight structure comprises a bottom (101) and a side (102), and the side (102) is bonded with the glass cover plate (103); in the thickness direction of the display device (100), the bottom (101) and the glass cover plate (103) are respectively arranged at both ends of the display device (100), the liquid crystal panel (104) and the backlight light guide assembly (105) are arranged between the bottom (101) and the glass cover plate (103), the liquid crystal panel (104) is connected with the glass cover plate (103), and the backlight light guide assembly (105) is arranged at one end where the bottom (101) is located; an edge area of the liquid crystal panel (104) is provided with a shielding layer (107), the protective layer (108) is within the shielding range of the shielding layer (107), and in the thickness direction of the display device (100), the protective layer (108) is between the liquid crystal panel (104) and the backlight light guide assembly (105).

2. The display device (100) according to claim 1, characterized in that, the transverse distance between the first side of the protective layer (108) and the second side of the shielding layer (107) is greater than or equal to the product of the longitudinal distance between the first end of the protective layer (108) and the shielding layer (107) and the tangent value of the first inclined viewing angle; wherein the first side is the side of the protective layer (108) close to the center area of the liquid crystal panel (104), the second side is the side of the shielding layer (107) close to the center area of the liquid crystal panel (104), and the first end is the end of the protective layer (108) facing the backlight light guide assembly (105).

3. The display device (100) according to claim 2, characterized in that, the first inclined viewing angle is greater than or equal to 30 degrees.

4. The display device (100) according to any one of claims 1 to 3, characterized in that, the protective layer (108) is arranged on the surface of the liquid crystal panel (104) facing the backlight light guide assembly (105).

5. The display device (100) according to any one of claims 1 to 4, characterized in that, the backlight light guide assembly (105) comprises a film assembly (1051) and a light guide plate (1052), the side of the light guide plate (1052) is provided with a protruding portion (1053), and the side (102) is provided with a limiting portion (1021) matched with the protruding portion (1053).

6. The display device (100) according to claim 5, characterized in that, the protruding portion (1053) is arranged on the top side of the light guide plate (1052).

7. The display device (100) according to any one of claims 1 to 6, characterized in that, In a free state, the protective layer (108) is not in contact with the backlight light guide assembly (105).

8. The display device (100) according to any one of claims 1 to 7, wherein, In a free state, the protective layer (108) is not in contact with the side portion (102).

9. The display device (100) according to any one of claims 1 to 8, wherein, The width of the protective layer (108) is greater than the height of the protective layer (108).

10. The display device (100) according to any one of claims 1 to 9, wherein, The protective layer (108) is made of foam or silica gel; or, The protective layer (108) is made by a dispensing process.

11. The display device (100) according to any one of claims 1 to 10, wherein, The display device (100) comprises a plurality of protective layers (108) distributed along the circumference of the liquid crystal panel (104).

12. The display device (100) according to any one of claims 1 to 11, wherein, The display device (100) comprises a protective layer (108) disposed on the top side of the liquid crystal panel (104), and a protective layer (108) disposed on the bottom side of the liquid crystal panel (104).

13. The display device (100) according to claim 12, wherein, A plurality of protective layers (108) are disposed on the top side of the liquid crystal panel (104) at intervals; and / or, A plurality of protective layers (108) are disposed on the bottom side of the liquid crystal panel (104) at intervals.

14. The display device (100) according to any one of claims 1 to 13, wherein, The lateral distance between the first side of the protective layer (108) and the second side of the shielding layer (107) is less than or equal to 1 millimeter.

15. The display device (100) according to any one of claims 1 to 14, wherein, In the thickness direction of the display device (100), the distance between the protective layer (108) and the backlight light guide assembly (105) is less than or equal to 0.7 millimeters.

16. A vehicle characterized by comprising: The vehicle comprises the display device according to any one of claims 1 to 15.

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