Display module and display device

Abstract

The embodiment of the utility model provides a display module and a display device, and belongs to the technical field of display. The light source is arranged on one side of the back plate, the light source comprises a plurality of light-emitting diodes which are arranged at intervals in the first direction, and a gap which does not contain a barrier piece is formed between every two adjacent light-emitting diodes; the flexible supporting layer is arranged on one side of the back plate, the flexible supporting layer extends in the first direction, the multiple light-emitting diodes are arranged on the side, away from the back plate, of the flexible supporting layer, and the multiple light-emitting diodes make contact with the flexible supporting layer; the orthographic projection of the light source on the back plate covers the orthographic projection of the flexible supporting layer on the back plate. According to the display module and the display device provided by the embodiment of the invention, the number of the light emitting diodes in the display module can be increased, and the light emitting brightness of the display module is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of display technology, and more specifically, to a display module and a display device. Background Art

[0002] The high brightness of display products can ensure that users can use them normally when they are outdoors under strong light, improving consumers' visual effects. Therefore, high brightness remains the key technical direction for the development of LCD (Liquid Crystal Display) mobile phones in the future, and is also a strong driving force for catching up with OLED (Organic Light-Emitting Diode) mobile phones. At present, the brightness level of OLED display products is 2000nits; while LCD display products can currently reach a maximum of 700nits after technical upgrades, which is still a big gap from OLED display products.

[0003] A key factor affecting the brightness of LCD display products is the number of LEDs (Light-Emitting Diodes). The brightness of the module is proportional to the number of LEDs. Currently, in LCD display products, the backlight plastic frame will set a great wall position between the LEDs. The function of the great wall position is to support and fix the backlight light strip in the thickness direction of the display module to prevent the LED from collapsing and tilting, thereby causing uneven display at the lamp port. However, the great wall position also greatly occupies the arrangement space of the LEDs, resulting in the number of LEDs being limited, which affects the brightness of the LCD display products. Utility Model Content

[0004] The embodiments of the present application provide a display module and a display device, aiming to increase the number of light-emitting diodes in the display module and improve the light-emitting brightness of the display module.

[0005] A first aspect of an embodiment of the present application provides a display module, including:

[0006] Back panel;

[0007] A light source is disposed on one side of the back plate, the light source comprising a plurality of light emitting diodes arranged at intervals along a first direction, and a gap without a blocking member is formed between two adjacent light emitting diodes;

[0008] A flexible supporting layer is arranged on one side of the back plate, the flexible supporting layer extends along a first direction, and the plurality of light-emitting diodes are arranged on a side of the flexible supporting layer away from the back plate, and the plurality of light-emitting diodes maintain contact with the flexible supporting layer;

[0009] The orthographic projection of the light source on the back panel covers the orthographic projection of the flexible supporting layer on the back panel.

[0010] Optionally, the display module further includes:

[0011] A plastic frame, arranged on the back plate and located on one side of the light source;

[0012] A light guide plate, arranged on the back plate and located on a side of the light source away from the plastic frame;

[0013] The flexible supporting layer is arranged between the plastic frame and the light guide plate, and there are gaps between the flexible supporting layer, the plastic frame and the light guide plate.

[0014] Optionally, the display module further includes:

[0015] A reflective sheet, arranged between the light guide plate and the back plate;

[0016] Wherein, the edge of the reflective sheet close to the light source is flush with the edge of the light guide plate close to the light source.

[0017] Optionally, the display module further includes:

[0018] A reflective sheet, arranged between the light guide plate and the back plate;

[0019] The edge of the reflective sheet close to the light source exceeds the edge of the light guide plate close to the light source, and there is a gap between the flexible supporting layer and the reflective sheet.

[0020] Optionally, the dimension of the flexible supporting layer in the second direction is greater than or equal to 0.45 mm and less than or equal to 0.70 mm;

[0021] The second direction is perpendicular to the first direction.

[0022] Optionally, the dimension of the flexible supporting layer in the third direction is greater than or equal to 0.10 mm and less than or equal to 0.17 mm;

[0023] The third direction is the light emitting direction of the display module.

[0024] Optionally, the material of the flexible supporting layer includes foam, and the compression amount of the foam is greater than or equal to 40% and less than or equal to 70%.

[0025] Optionally, the display module further includes:

[0026] A flexible circuit board connected to the light source, the flexible circuit board comprising a flat area and a bending area connected to the flat area, the flat area being connected to the plastic frame of the display module, and the bending area being connected to the light guide plate of the display module;

[0027] A reinforcing layer, arranged on a side of the flexible circuit board away from the light source;

[0028] The reinforcing layer includes a first part and a second part, wherein the orthographic projection of the first part on the back panel covers the orthographic projection of the plane area on the back panel, and the orthographic projection of the second part on the back panel partially overlaps with the orthographic projection of the bending area on the back panel.

[0029] Optionally, the second portion includes a plurality of subunits spaced apart along the first direction, the length direction of the subunits extending along the second direction, and the size of the subunits in the first direction gradually decreases from a side close to the plane area to a side far from the plane area;

[0030] The first direction is perpendicular to the second direction.

[0031] Optionally, the shape of the subunit includes a triangle and a trapezoid.

[0032] Optionally, the orthographic projection of the subunit on the backplane is located between the orthographic projections of two adjacent light emitting diodes on the backplane.

[0033] Optionally, the maximum dimension of the subunit in the first direction is equal to the spacing distance between two adjacent light emitting diodes.

[0034] Optionally, there is a gap between the orthographic projection of the first portion on the back plate and the orthographic projection of the bending area on the back plate;

[0035] The first part includes a plurality of protrusions, each of which corresponds to each of the subunits one by one and is connected to the subunits, and the orthographic projection of the protrusion on the backplane coincides with the orthographic projection of the gap on the backplane.

[0036] Optionally, a dimension of the gap in the second direction is greater than or equal to 0.08 mm and less than or equal to 0.12 mm.

[0037] Optionally, the thickness of the reinforcement layer is greater than or equal to 30 μm and less than or equal to 40 μm.

[0038] Optionally, the display module further includes:

[0039] A flexible circuit board connected to the light source,

[0040] A display panel is disposed on the back panel, and the orthographic projection of the display panel on the back panel partially overlaps with the orthographic projection of the flexible circuit board on the back panel;

[0041] A connecting pad is arranged between the flexible circuit board and the display panel, and one side of the connecting pad is connected to the flexible circuit board, and the other side of the connecting pad is connected to the display panel.

[0042] Optionally, the display module further includes:

[0043] A light-shielding adhesive layer is arranged along the circumference of the back plate, the orthographic projection of the light-shielding adhesive layer on the back plate at least partially overlaps with the orthographic projection of the flexible circuit board on the back plate, and the light-shielding adhesive layer is connected to the flexible circuit board;

[0044] The connecting gasket is arranged between the light shielding adhesive layer and the display panel.

[0045] Optionally, the display module further includes:

[0046] A first polarizer, arranged on a side of the display panel close to the back plate;

[0047] The orthographic projection of the connecting gasket on the back plate does not overlap with the orthographic projection of the first polarizer on the back plate, and an edge of one side of the connecting gasket away from the first polarizer is flush with an edge of the light-shielding adhesive layer.

[0048] Optionally, a dimension of the gap between the connecting gasket and the first polarizer in the second direction is greater than or equal to 0.35 mm and less than or equal to 0.45 mm;

[0049] The second direction is perpendicular to the first direction.

[0050] A second aspect of an embodiment of the present application provides a display device, comprising a display module provided in the first aspect of an embodiment of the present application.

[0051] Beneficial effects:

[0052] The present application provides a display module and a display device, which are provided with a back panel, a light source and a flexible supporting layer, wherein the light source includes a plurality of light emitting diodes arranged at intervals along a first direction, and a gap without a blocking member is formed between two adjacent light emitting diodes, the flexible supporting layer extends along the first direction, and the plurality of light emitting diodes are arranged on a side of the flexible supporting layer away from the back panel, and the orthographic projection of the light source on the back panel covers the orthographic projection of the flexible supporting layer on the back panel; the display module of the present application cancels the Great Wall position of the rubber frame of the display module, and two adjacent second light emitting diodes are not blocked by the blocking member, so that a larger number of light emitting diodes can be placed in the display module, thereby improving the luminous brightness of the display module, and the present application provides a flexible supporting layer to support the plurality of light emitting diodes, which can prevent the light emitting diodes from collapsing and tilting, thereby causing uneven display of the lamp socket. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0054] Figure 1 It is a schematic diagram of the arrangement of a plastic frame including a Great Wall position and a light emitting diode in a related technology;

[0055] Figure 2 is a structural schematic diagram of a display module proposed in one embodiment of the present application;

[0056] Figure 3 It is a schematic diagram of the arrangement of a plastic frame and light-emitting diodes in a display module not including a Great Wall position proposed in an embodiment of the present application;

[0057] Figure 4 is a structural schematic diagram of a display module including a flexible supporting layer proposed in one embodiment of the present application;

[0058] Figure 5 It is a partial planar structural schematic diagram of a display module including a flexible supporting layer proposed in one embodiment of the present application;

[0059] Figure 6 It is a schematic structural diagram of a flexible support layer including a release film proposed in one embodiment of the present application;

[0060] Figure 7 This is a schematic diagram of a structure of a display module for displaying a flexible circuit board in one embodiment of the present application;

[0061] Figure 8 It is a schematic diagram of a planar structure of a flexible circuit board including a reinforcement layer proposed in one embodiment of the present application;

[0062] Fig. 9 This is a schematic diagram of an installation structure of a flexible circuit board including a reinforcement layer and a display module proposed in an embodiment of the present application;

[0063] Fig.10 yes Fig. 9 An enlarged schematic diagram of the local structure;

[0064] Fig.11 is a schematic diagram of an assembly of a flexible circuit board including a reinforcement layer proposed in one embodiment of the present application;

[0065] Fig.12 is a structural schematic diagram of a display module including a connection gasket proposed in an embodiment of the present application;

[0066] Fig.13 is a schematic diagram of a planar structure of a display module including a connection gasket proposed in an embodiment of the present application;

[0067] Fig.14 It is a schematic diagram of the molding of a light-shielding adhesive layer and a connecting gasket proposed in an embodiment of the present application.

[0068] Explanation of the reference numerals: 10, back plate; 11, glue frame; 111, Great Wall position; 12, reflector; 13, light guide plate; 14, diffuser; 15, brightness enhancement film; 16, first polarizer; 17, graphite sheet; 20, light source; 21, light emitting diode; 22, flexible circuit board; 221, plane area; 222, bending area; 23, reinforcement layer; 231, first part; 232, second part; 2321, subunit; 30, display panel; 31, array substrate; 32, color film substrate; 33, second polarizer; 34, cover plate; 35, optical glue layer; 36, driver chip; 37, transmission circuit board; 40, flexible support layer; 50, lamp glue; 60, connecting gasket; 70, light-shielding glue layer; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0069] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0070] In the related art, a great wall is set between two adjacent LEDs in the plastic frame of the display module. The great wall can be used to support the light bar in the thickness direction of the display module. However, the great wall will occupy the arrangement space of the LEDs. For example, for a conventional 6.7-inch display product, if one lamp and one slot are used, only 18 LEDs can be placed, resulting in a limit on the number of LEDs, thereby limiting the brightness of the display module.

[0071] In view of this, an embodiment of the present application proposes a display module and a display device, by setting a back panel, a light source and a flexible supporting layer, wherein the light source includes a plurality of light-emitting diodes arranged at intervals along a first direction, and a gap without a blocking member is formed between two adjacent light-emitting diodes, the flexible supporting layer extends along the first direction, and the plurality of light-emitting diodes are arranged on a side of the flexible supporting layer away from the back panel, and the orthographic projection of the light source on the back panel covers the orthographic projection of the flexible supporting layer on the back panel; the display module of the present application cancels the Great Wall position of the rubber frame of the display module, and two adjacent second light-emitting diodes are not blocked by the blocking member, so that a larger number of light-emitting diodes can be placed in the display module, thereby improving the luminous brightness of the display module, and the present application sets a flexible supporting layer to support the plurality of light-emitting diodes, which can prevent the light-emitting diodes from collapsing and tilting, thereby causing uneven display of the lamp socket.

[0072] Reference Figure 2 As shown, a display module disclosed in an embodiment of the present application includes a back plate 10 , a light source 20 and a display panel 30 .

[0073] Specifically, the display module is an LCD display module, and the shape of the display module is substantially rectangular. In this regard, a first direction X, a second direction Y and a third direction are defined in the embodiment of the present application.

[0074]

[0075] Z, wherein the first direction X is the width direction of the display module, the second direction Y is the length direction of the display module, and the third direction Z is the thickness direction of the display module, which is also the light emitting direction of the display module. Therefore, the first direction X is perpendicular to the second direction Y, and the first direction X and the second direction Y are perpendicular to the third direction Z at the same time. In other embodiments, the shape of the display module can be other shapes, and the corresponding dimensional directions will also be different, but they can generally correspond to the directions corresponding to the embodiments of the present application.

[0076] Reference Figure 2 As shown, the back plate 10 in the display module mainly plays the role of fixing and supporting the entire module.

[0077] Reference Figure 2As shown, the light source 20 is disposed on one side of the back plate 10, and the light source 20 is located near the edge of one side of the display module. The light source 20 includes a plurality of light emitting diodes 21 arranged at intervals along a first direction X. The light emitting diodes 21 can emit light to realize the image display of the display module, but the direction of the light emitted by the light source 20 is along the second direction Y, so it is necessary to convert the direction of the light emitted by the light source 20 to the third direction Z. In addition, the light source 20 also includes a flexible circuit board 22, which is used to transmit a light emitting signal to control the light emission of each light emitting diode 21.

[0078] To this end, the display module further includes a plastic frame 11 and a device for converting the direction of light located on the back plate 10 .

[0079] Reference Figure 2 As shown, the plastic frame 11 is disposed along the circumferential edge of the back plate 10 . Since the light source 20 is close to one side edge of the display module, the light source 20 and the plastic frame 11 are adjacent to each other.

[0080] Reference Figure 2 As shown, the device may include a reflector 12, a light guide plate 13, a diffuser 14, a light enhancement sheet 15, and a first polarizer 16 stacked in sequence from bottom to top. The combination of these devices and the light source 20 is also the backlight module of the display module. After the backlight module is assembled with the display panel 30, the display module can be formed and image display can be realized. In some embodiments, a graphite sheet 17 can also be provided on one side of the back plate 10 for heat dissipation of the entire display module.

[0081] Among them, the light guide plate 13 is used to transmit light and convert the point light source 20 emitted by the light-emitting diode 21 into a surface light source 20; the reflective film 12 can reflect the light transmitted from the light guide plate 13 to improve the luminous brightness of the display module; the diffuser 14 can disperse the light transmitted from the light guide plate 13 to make the display of the display module more uniform; the brightening film 15 can converge the light, thereby improving the backlight brightness of the display module; the first polarizer 16 is used to generate usable polarized light.

[0082] Reference Figure 2 As shown, the display panel 30 is a device in the display module that plays the role of displaying images. The display panel 30 may specifically include an array substrate 31, a liquid crystal layer, a color film substrate 32, a second polarizer 33 and a cover plate 34 stacked in sequence from bottom to top. The cover plate 34 and the second polarizer 33 may be connected by an optical adhesive layer 35.

[0083] Among them, the array substrate 31, the liquid crystal layer and the color film substrate 32 are components that constitute the display module display imaging. The array substrate 31 can also be provided with a driver chip 36 and a transmission circuit board 37, wherein the driver chip 36 is used to control the transmission of the photoelectric signal, and the transmission circuit board 37 realizes the electrical connection between the driver chip 36 and the control circuit board. The flexible circuit board 22 is used as a connector to transmit the power signal, control command, image data, etc. of the external circuit to the driver chip 36. The driver chip 36 processes the control command and image data and converts them into the control timing of the array substrate 31 to realize the display of the image. The second polarizer 33 can play a polarization role to enhance the display effect of the display module. The cover plate 34 can protect the display module.

[0084] Reference Figure 1 As shown, in the related art, a plurality of Great Wall positions 111 are provided on the plastic frame 11, and the light emitting diode 21 is located in the Great Wall position 111 (there is no connection relationship between the light emitting diode 21 and the plastic frame 11). At the same time, the flexible circuit board 22 of the light source 20 is connected to the plastic frame 11, so the flexible circuit board 22 is supported by these Great Wall positions 111, and the light emitting diode 21 can also be supported. However, the Great Wall position 111 will occupy the arrangement space of the light emitting diode 21. Exemplarily, the size of the light source 20 in the first direction X is the size of the plurality of light emitting diodes 21 plus the plurality of Great Wall positions 111, and there is a gap between the light emitting diode 21 and the Great Wall position 111, so for a display module of a certain size, the setting of the Great Wall position 111 will result in a limit to the number of light emitting diodes 21 arranged.

[0085] For this purpose, refer to Figure 3 As shown, in the embodiment of the present application, the Great Wall position 111 is no longer provided on the rubber frame 11. That is to say, in the embodiment of the present application, no barrier is provided between two adjacent light-emitting diodes 21, and it can also be understood that a gap without a barrier is formed between two adjacent light-emitting diodes 21. Therefore, for the embodiment of the present application, in a display module of the same size, the embodiment of the present application can arrange a larger number of light-emitting diodes 21. For example, in a 6.7-inch display module, the embodiment of the present application can place 20 light-emitting diodes 21. Compared with the related art, the brightness of the display module of the present application can be increased by about 11%.

[0086] However, after the Great Wall position 111 is removed, the light emitting diode 21 may collapse and tilt in the third direction Z, thereby affecting the display effect of the display module.

[0087] For this purpose, refer to Figure 4 As shown, in the embodiment of the present application, the display module further includes a flexible supporting layer 40 .

[0088] Specifically, the flexible supporting layer 40 is disposed on one side of the back plate 10, and the flexible supporting layer 40 extends along the first direction X. The multiple light-emitting diodes 21 of the light source 20 are all disposed on the side of the flexible supporting layer 40 away from the back plate 10, and the multiple light-emitting diodes 21 are in contact with the flexible supporting layer 40. At the same time, the orthographic projection of the light source 20 on the back plate 10 covers the orthographic projection of the flexible supporting layer 40 on the back plate 10, so that the flexible supporting layer 40 can be used to support the light-emitting diodes 21 in the third direction Z without occupying too much of the remaining space, thereby avoiding the phenomenon of collapse and tilt of the light-emitting diodes 21.

[0089] Since the light source 20 is located between the rubber frame 11 and the light guide plate 13, the flexible support layer 40 is also located between the rubber frame 11 and the light guide plate 13. Considering the assembly accuracy of the flexible support layer 40 and other devices, there is a gap between the flexible support layer 40 and the rubber frame 11 and the light guide plate 13. In the embodiment of the present application, the flexible support layer 40 can ensure the assembly accuracy by being about 0.15mm away from the rubber frame 11 in the second direction Y, and the flexible support layer 40 can ensure the assembly accuracy by being about 0.15mm away from the light guide plate 13 in the second direction Y. The values ​​of these gaps will also affect the size of the flexible support layer 40 in the second direction Y (which can be understood as the width of the flexible support layer 40).

[0090] In addition, the width of the flexible support layer 40 is also affected by the dimension of the light emitting diode 21 in the second direction Y (which can be understood as the width of the light emitting diode 21). For example, the width of the light emitting diode 21 of the 2604 type is 0.60 mm, and the width of the light emitting diode 21 of the 3004 type is 0.85 mm. At the same time, it is considered that there is also a gap between the light emitting diode 21 and the plastic frame 11 (the gap value is conventionally designed to be 0.15 mm).

[0091] Finally, considering the above factors, it can be calculated that the size of the flexible supporting layer 40 in the second direction Y is greater than or equal to 0.45 mm and less than or equal to 0.70 mm. For example, the size of the flexible supporting layer 40 in the second direction Y can be 0.45 mm, 0.50 mm, 0.55 mm, 0.60 mm, 0.65 mm, 0.70 mm, etc., and those skilled in the art can set it according to actual needs.

[0092] Reference Figure 5 As shown, the dimension of the flexible support layer 40 in the first direction X (which can be understood as the length of the flexible support layer 40) only needs to consider the gap between the flexible support layer 40 and the rubber frame 11. In the embodiment of the present application, the two ends of the flexible support layer 40 are respectively about 0.30 mm away from the rubber frame 11, which can ensure the assembly accuracy.

[0093] The dimension of the flexible support layer 40 in the third direction Z (which can be understood as the thickness of the flexible support layer 40) needs to take into account the thickness of the light emitting diode 21, the thickness of the reflective sheet 12, the thickness of the light guide plate 13 at the position of the light source 20, and the thickness of the light glue 50 between the light guide plate 13 and the flexible circuit board 22 (the light guide plate 13 and the flexible circuit board 22 are connected by the light glue 50). Among them, the thickness of the light emitting diode 21 is 0.43 mm, the thickness of the reflective sheet 12 is 0.08 mm, the thickness of the light glue 50 is 0.08 mm, and the thickness of the light guide plate 13 at the position of the light source 20 is at least 0.37 mm.

[0094] According to the above data, it can be calculated that the size of the flexible support layer 40 in the third direction Z is greater than or equal to 0.10 mm and less than or equal to 0.17 mm. For example, the size of the flexible support layer 40 in the third direction Z can be 0.10 mm, 0.11 mm, 0.12 mm, 0.13 mm, 0.14 mm, 0.15 mm, 0.16 mm, 0.17 mm, etc., and those skilled in the art can set it according to actual needs.

[0095] In the embodiment of the present application, since the flexible support layer 40 needs to be connected to the back plate 10, the flexible support layer 40 uses a foam with a single-sided adhesive. At the same time, in order to ensure the supporting effect, it is necessary to make the flexible support layer 40 and the light-emitting diode 21 fit with zero clearance, but the material thickness has tolerance fluctuations. When the thickness of the flexible support layer 40 and the thickness of the light-emitting diode 21 are both biased towards the upper limit, the flexible support layer 40 will interfere with the light-emitting diode 21, causing the light-emitting diode 21 to be lifted up, which will also affect the display effect of the display module. For this reason, in the embodiment of the present application, the compression amount of the foam used in the flexible support layer 40 is required to be greater than or equal to 40%, and less than or equal to 70%, so that the flexible support layer 40 has good elasticity, thereby absorbing the fluctuation within the material thickness tolerance.

[0096] In one embodiment, when the thickness of the flexible support layer 40 is 0.10 mm, the thickness of the foam is 0.08 mm, the thickness of the adhesive layer is 0.02 mm, and the viscosity of the adhesive layer needs to be greater than or equal to 1200 gf to ensure the bonding effect.

[0097] Reference Figure 6As shown, when foam is used to make the flexible support layer 40, considering that in the embodiment of the present application, the foam used in the flexible support layer 40 is relatively slender and easily twisted and deformed during transportation, the release film 41 of the foam needs to be widened. The length of the foam release film 41 and the protective film arranged on one side of the foam are consistent with the length of the foam, the width of the release film 41 is greater than 2mm, and the thickness is greater than 0.1mm to ensure the stiffness of the release film 41. In addition, the release film 41 also includes a tearing handle, which is arranged at one end of the release film 41, and the length and width of the tearing handle 42 are both 5mm.

[0098] After die-cutting, the single-sided adhesive foam monomer can be packaged in a roll core layout and then transported to the backlight factory for assembly. The backlight factory grabs it through equipment and assembles the foam and the back panel 10 together through CCD positioning, and then the release film is torn off through the equipment.

[0099] In the related art, in order to ensure the reflection effect, the edge of the reflective sheet 12 generally exceeds the light guide plate 13 , while in the embodiment of the present application, the reflective sheet 12 needs to be retracted to meet the installation space of the flexible support layer 40 .

[0100] Reference Figure 4 As shown, in one embodiment, the edge of the reflective sheet 12 close to the light source 20 is flush with the edge of the light guide plate 13 close to the light source 20. In this way, the edge of the reflective sheet 12 is flush with the edge of the light guide plate 13, which can leave the maximum installation space, so that the flexible support layer 40 can be better attached to the back plate 10.

[0101] In one embodiment, the edge of the reflective sheet 12 close to the light source 20 exceeds the edge of the light guide plate 13 close to the light source 20, and there is a gap between the flexible supporting layer 40 and the reflective sheet 12. In this embodiment, the edge of the reflective sheet 12 still exceeds the light guide plate 13, but the exceeding distance is reduced, so that space for installing the flexible supporting layer 40 can also be reserved.

[0102] Reference Figure 8 As shown, in an optional implementation, the embodiment of the present application further provides a display module, which also includes a reinforcement layer 23 arranged on the flexible circuit board 22.

[0103] Specifically, refer to Figure 7As shown, the flexible circuit board 22 includes a plane area 221 and a bending area 222, wherein a portion of the plane area 221 is connected to the frame 11 through the light glue 50, the bending area 222 is connected to the light guide plate 13 through the light glue 50, and the light source 20 is connected to the plane area 221 of the flexible circuit board 22. In the embodiment of the present application, by providing a reinforcing layer 23 on a side of the flexible circuit board 22 away from the light source 20, the supporting strength of the flexible circuit board 22 can be increased, thereby reducing the occurrence of collapse and tilt of the light emitting diode 21.

[0104] However, since the bending area 222 of the flexible circuit board 22 is bent to a certain extent, a rebound force is generated at this position, causing the bending area 222 to drive the edge of the lamp glue 50 to lift and separate and generate bubbles in the lamp glue 50. After the reinforcement layer 23 is set, the thickness of the flexible circuit board 22 is increased, resulting in an increase in the rebound force generated by the flexible circuit board 22, which makes it more likely to cause the edge of the lamp glue 50 to lift and separate.

[0105] For this purpose, refer to Figure 8 As shown, in the embodiment of the present application, the reinforcing layer 23 includes a first portion 231 and a second portion 232, wherein the orthographic projection of the first portion 231 on the back plate 10 covers the orthographic projection of the plane area 221 on the back plate 10, and the orthographic projection of the second portion 232 on the back plate 10 partially overlaps with the orthographic projection of the bending area 222 on the back plate 10. In other words, the first portion 231 covers most of the plane area 221, and the second portion 232 only covers part of the bending area 222, so that the rebound force generated by the bending area 222 can be reduced, thereby reducing the occurrence of warping and separation of the edge of the lamp glue 50.

[0106] Specifically, refer to Figure 8 As shown, the second portion 232 includes a plurality of subunits 2321 spaced apart along the first direction X, the length direction of the subunit 2321 extends along the second direction Y, and the size of the subunit 2321 in the first direction X gradually decreases from the side close to the plane area 221 to the side away from the plane area 221.

[0107] The size of the subunit 2321 in the first direction X can also be understood as the width of the subunit 2321, that is, the width of the subunit 2321 gradually decreases along its extension direction. The width of the subunit 2321 is the largest at the position connected to the first part 231, and the width of the subunit 2321 is the smallest at the position farthest from the first part 231. Therefore, the shape of the subunit 2321 can be a triangle or a trapezoid. In the embodiment of the present application, the shape of the subunit 2321 is set to be a triangle.

[0108] Setting the subunit 2321 to a triangle shape can enable the subunit 2321 to play a stronger supporting role at the position where the width is the largest. At the same time, the width of the subunit 2321 gradually decreases, which can gradually reduce the rebound stress generated in the bending area 222, thereby reducing the risk of the edge of the lamp glue 50 warping and separating and generating bubbles in the lamp glue 50.

[0109] At the same time, refer to Fig. 9 As shown, in the embodiment of the present application, the orthographic projection of each sub-unit 2321 on the back panel 10 is located between the orthographic projections of two adjacent light-emitting diodes 21 on the back panel 10. It can also be understood that the sub-unit 2321 is arranged between two adjacent light-emitting diodes 21, so that the light-emitting angle of the light-emitting diode 21 can be avoided (the light-emitting angle of the light-emitting diode 21 is 120°), thereby reducing the influence of the bubbles of the lamp glue 50 generated at the position of the sub-unit 2321 on the light effect of the light-emitting diode 21.

[0110] In addition, the maximum dimension of the subunit 2321 in the first direction X is equal to the spacing distance between two adjacent light-emitting diodes 21. For example, when the spacing between two adjacent light-emitting diodes 21 is 0.40 mm, the maximum width of the subunit 2321 is 0.40 mm. At the same time, the spacing V between the top of the subunit 2321 and the light-emitting diode 21 is 0.20 mm.

[0111] Reference Fig.10 As shown, in order to make the first part 231 avoid the bending starting point of the bending zone 222 and reduce the rebound stress of the flexible circuit board 22, in an optional embodiment, there is a gap U between the orthographic projection of the first part 231 on the back plate 10 and the orthographic projection of the bending zone 222 on the back plate 10.

[0112] That is, in this embodiment, the first portion 231 does not completely cover the plane area 221 , but only covers the position of the plane area 221 close to the bending area 222 , so that the bending starting point of the flexible circuit board 22 will not generate excessive rebound stress.

[0113] In one embodiment, the size of the gap U in the second direction Y is greater than or equal to 0.08 mm and less than or equal to 0.12 mm. For example, the size of the gap U in the second direction Y can be 0.08 mm, 0.09 mm, 0.10 mm, 0.11 mm, 0.12 mm, etc., and those skilled in the art can set it according to actual needs.

[0114] At the same time, refer to Fig.10As shown, the first part 231 includes a plurality of protrusions 2311, which protrude from the first part 231 and extend along the second direction Y, and the protrusions 2311 correspond to the sub-units 2321 one by one. The protrusions 2311 can be used to connect the first part 231 and the plurality of sub-units 2321 together, so that the first part 231 and the second part 232 form a whole, so that the assembly of the reinforcement layer 23 is more convenient.

[0115] It can be understood that the orthographic projection of the protrusion 2311 on the back plate 10 coincides with the orthographic projection of the gap U on the back plate 10, that is, the protrusion 2311 is located at the position of the gap U, and the size of the protrusion 2311 in the second direction Y (that is, the length of the protrusion 2311) can be the same as the size of the gap U in the second direction Y, and the size of the protrusion 2311 in the first direction X (that is, the width of the protrusion) can be the same as the maximum width of the subunit 2321.

[0116] In the embodiment of the present application, the reinforcing layer 23 includes a covering film and a glue layer connecting the covering film to the flexible circuit board 22. The covering film can be made of PI (polyimide), and the glue layer can be made of pressure-sensitive adhesive. It is understood that the thicker the covering film is, the stronger the supporting effect of the reinforcing layer 23 on the flexible circuit board 22 is.

[0117] The thickness of the reinforcing layer 23 is greater than or equal to 30 μm and less than or equal to 40 μm. For example, the thickness of the reinforcing layer 23 can be 30 μm, 33 μm, 35 μm, 38 μm, 40 μm, etc., and those skilled in the art can set it according to actual needs. In the reinforcing layer 23, the thickness of the adhesive layer is generally fixed, about 15 μm, that is, the thickness of the covering film can be greater than or equal to 15 μm and less than or equal to 25 μm.

[0118] Since there is a certain gap between the display panel 30 and the flexible circuit board 22, even if the thickness of the flexible circuit board 22 is increased, the gap can be used to accommodate the reinforcing layer 23 without having a significant impact on the overall size of the display module.

[0119] Reference Fig.11 As shown, in actual application, the reinforcing layer 23 can be cut and shaped first, and then the reinforcing layer 23 and the main body of the flexible circuit board 22 can be attached and combined together.

[0120] Reference Fig.12 As shown, in an optional implementation, the embodiment of the present application further provides a display module, which also includes a connecting gasket 60.

[0121] Specifically, in the embodiment of the present application, the orthographic projection of the display panel 30 on the back plate 10 and the orthographic projection of the flexible circuit board 22 on the back plate 10 are partially overlapped, and the connection pad 60 is arranged at the position where the display panel 30 and the flexible circuit board 22 partially overlap. It can be understood that the connection pad 60 is arranged between the display panel 30 and the flexible circuit board 22, and one side of the connection pad 60 is connected to the flexible circuit board 22, and the other side is connected to the display panel 30. It should be noted that the array substrate 31 is closest to the back plate 10 in the display panel 30, so in the actual product, one side of the connection pad 60 is connected to the array substrate 31.

[0122] Furthermore, the connection gasket 60 is a gasket with strong adhesiveness, which can firmly connect the flexible circuit board 22 to the display panel 30 . Since the flexible circuit board 22 is connected to the light source 20 , the connection gasket 60 can reduce the occurrence of the light emitting diode 21 sinking and tilting.

[0123] Reference Fig.12 and Fig.13 As shown, in one embodiment, a light shielding adhesive layer 70 is further provided in the display module, and the light shielding adhesive layer 70 is provided along the circumference of the back plate 10. The light shielding adhesive layer 70 is mainly used to shield the light at the edge and fix each film layer and the display panel 30. At the same time, the orthographic projection of the light shielding adhesive layer 70 on the back plate 10 and the orthographic projection of the flexible circuit board 22 on the back plate 10 at least partially overlap, and the light shielding adhesive layer 70 is directly connected to the flexible circuit board 22. In this embodiment, the connecting gasket 60 is provided between the light shielding adhesive layer 70 and the array substrate 31 of the display panel 30. In this way, the connection between the flexible circuit board 22 and the display panel 30 can also be achieved to reduce the occurrence of the sinking and tilting of the light emitting diode 21.

[0124] Since the first polarizer 16 is disposed on the side of the display panel 30 close to the back plate 10, the assembly accuracy of the connecting gasket 60 and the first polarizer 16 needs to be considered when the connecting gasket 60 is disposed. In the embodiment of the present application, the orthographic projection of the connecting gasket 60 on the back plate 10 does not overlap with the orthographic projection of the first polarizer 16 on the back plate 10, and the edge of the connecting gasket 60 away from the first polarizer 16 is flush with the edge of the light shielding adhesive layer 70. In other words, there is a gap H between the connecting gasket 60 and the first polarizer 16.

[0125] In one embodiment, the size of the gap H between the connecting gasket 60 and the first polarizer 16 in the second direction Y is greater than or equal to 0.35 mm and less than or equal to 0.45 mm to meet the assembly accuracy requirements of the display module. Exemplarily, the size of the gap H between the connecting gasket 60 and the first polarizer 16 in the second direction Y can be 0.35 mm, 0.38 mm, 0.40 mm, 0.43 mm, 0.45 mm, etc., and those skilled in the art can set it according to actual needs.

[0126] In addition, the embodiment of the present application requires that the viscosity of the connection pad 60 is greater than or equal to 800 gf and less than or equal to 1200 gf to effectively ensure the bonding effect between the connection pad 60 and the flexible circuit board 22 and the display panel 30. The thickness of the connection pad 60 can be set according to actual needs.

[0127] Reference Fig.14 As shown, in actual application, a connecting gasket 60 can be partially attached to the light-shielding collagen roll first, and then the light-shielding collagen roll is cut into multiple light-shielding adhesive layers 70 by a knife die, and finally the waste is formed.

[0128] It should be noted that the above-mentioned solutions provided in the embodiments of the present application can be used alone or in combination of multiple solutions. The embodiments of the present application are not limited to being a single solution or a combined solution.

[0129] Based on the same inventive concept, an embodiment of the present application discloses a display device, comprising any display module as described above in the embodiment of the present application.

[0130] Specifically, the display device may include a computer monitor, a television, a billboard, a laser printer with a display function, a telephone, a mobile phone, a personal digital assistant (PDA), a laptop computer, a digital camera, a camcorder, a viewfinder, a vehicle, a large-area wall, a theater screen, or a stadium sign, etc.

[0131] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0132] It should also be noted that, in this article, the orientation or position relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations, nor can they be understood as indicating or implying relative importance. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. Without more restrictions, an element defined by the phrase "comprising a ..." does not exclude the existence of other identical elements in the process, method, article or terminal device comprising the element.

[0133] The technical solution provided by the present application is described in detail above. The principle and implementation method of the present application are described in this article using specific examples. The description of the above embodiments is only used to help understand the present application, and the content of this specification should not be understood as limiting the present application. At the same time, for those of ordinary skill in the art, according to the present application, there will be different forms of changes in the specific implementation methods and application scopes. It is not necessary and impossible to list all the implementation methods here, and the obvious changes or modifications derived therefrom are still within the scope of protection of the present application.

Claims

1. A display module, characterized in that: include: Back panel; A light source is disposed on one side of the back plate, the light source comprising a plurality of light emitting diodes arranged at intervals along a first direction, and a gap without a blocking member is formed between two adjacent light emitting diodes; A flexible supporting layer is arranged on one side of the back plate, the flexible supporting layer extends along a first direction, and the plurality of light-emitting diodes are arranged on a side of the flexible supporting layer away from the back plate, and the plurality of light-emitting diodes maintain contact with the flexible supporting layer; The orthographic projection of the light source on the back panel covers the orthographic projection of the flexible supporting layer on the back panel.

2. The display module according to claim 1, characterized in that: The display module also includes: A plastic frame, arranged on the back plate and located on one side of the light source; A light guide plate, arranged on the back plate and located on a side of the light source away from the plastic frame; The flexible supporting layer is arranged between the plastic frame and the light guide plate, and there are gaps between the flexible supporting layer, the plastic frame and the light guide plate.

3. The display module according to claim 2, characterized in that: The display module also includes: A reflective sheet, arranged between the light guide plate and the back plate; Wherein, the edge of the reflective sheet close to the light source is flush with the edge of the light guide plate close to the light source.

4. The display module according to claim 2, characterized in that: The display module also includes: A reflective sheet, arranged between the light guide plate and the back plate; The edge of the reflective sheet close to the light source exceeds the edge of the light guide plate close to the light source, and there is a gap between the flexible supporting layer and the reflective sheet.

5. The display module according to claim 1, characterized in that: The dimension of the flexible supporting layer in the second direction is greater than or equal to 0.45 mm and less than or equal to 0.70 mm; The second direction is perpendicular to the first direction.

6. The display module according to claim 1, characterized in that: The dimension of the flexible supporting layer in the third direction is greater than or equal to 0.10 mm and less than or equal to 0.17 mm; The third direction is the light emitting direction of the display module.

7. The display module according to claim 1, characterized in that: The material of the flexible supporting layer includes foam, and the compression amount of the foam is greater than or equal to 40% and less than or equal to 70%.

8. The display module according to claim 1, characterized in that: The display module also includes: A flexible circuit board connected to the light source, the flexible circuit board comprising a flat area and a bending area connected to the flat area, the flat area being connected to the plastic frame of the display module, and the bending area being connected to the light guide plate of the display module; A reinforcing layer, arranged on a side of the flexible circuit board away from the light source; The reinforcing layer includes a first part and a second part, wherein the orthographic projection of the first part on the back panel covers the orthographic projection of the plane area on the back panel, and the orthographic projection of the second part on the back panel partially overlaps with the orthographic projection of the bending area on the back panel.

9. The display module according to claim 8, characterized in that: The second part includes a plurality of subunits spaced apart along the first direction, the length direction of the subunits extending along the second direction, and the size of the subunits in the first direction gradually decreases from a side close to the plane area to a side far from the plane area; The first direction is perpendicular to the second direction.

10. The display module according to claim 9, characterized in that: The shapes of the subunits include triangle and trapezoid.

11. The display module according to claim 9, characterized in that: The orthographic projection of the subunit on the backplane is located between the orthographic projections of two adjacent light emitting diodes on the backplane.

12. The display module according to claim 11, characterized in that: The maximum size of the subunit in the first direction is equal to the spacing distance between two adjacent light emitting diodes.

13. The display module according to claim 9, characterized in that: There is a gap between the orthographic projection of the first portion on the back plate and the orthographic projection of the bending area on the back plate; The first part includes a plurality of protrusions, each of which corresponds to each of the subunits one by one and is connected to the subunits, and the orthographic projection of the protrusion on the backplane coincides with the orthographic projection of the gap on the backplane.

14. The display module according to claim 13, characterized in that: A dimension of the gap in the second direction is greater than or equal to 0.08 mm and less than or equal to 0.12 mm.

15. The display module according to claim 8, characterized in that: The thickness of the reinforcement layer is greater than or equal to 30 μm and less than or equal to 40 μm.

16. The display module according to claim 1, characterized in that: The display module also includes: A flexible circuit board connected to the light source, A display panel is disposed on the back panel, and the orthographic projection of the display panel on the back panel partially overlaps with the orthographic projection of the flexible circuit board on the back panel; A connecting pad is arranged between the flexible circuit board and the display panel, and one side of the connecting pad is connected to the flexible circuit board, and the other side of the connecting pad is connected to the display panel.

17. The display module according to claim 16, characterized in that: The display module also includes: A light-shielding adhesive layer is arranged along the circumference of the back plate, the orthographic projection of the light-shielding adhesive layer on the back plate at least partially overlaps with the orthographic projection of the flexible circuit board on the back plate, and the light-shielding adhesive layer is connected to the flexible circuit board; The connecting gasket is arranged between the light shielding adhesive layer and the display panel.

18. The display module according to claim 17, characterized in that: The display module also includes: A first polarizer, arranged on a side of the display panel close to the back plate; The orthographic projection of the connecting gasket on the back plate does not overlap with the orthographic projection of the first polarizer on the back plate, and an edge of one side of the connecting gasket away from the first polarizer is flush with an edge of the light-shielding adhesive layer.

19. The display module according to claim 18, characterized in that: The size of the gap between the connecting pad and the first polarizer in the second direction is greater than or equal to 0.35 mm and less than or equal to 0.45 mm; The second direction is perpendicular to the first direction.

20. A display device comprising the display module according to any one of claims 1 to 19.

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