Display module and middle frame

Abstract

Embodiments of the present disclosure provide a display module and a middle frame. The display module includes: a backlight module and a display panel. The backlight module includes a back plate, a first light source, and a middle frame. The back plate includes a bottom plate, the first light source is disposed on the bottom plate, the middle frame is disposed between the bottom plate and the display panel. One side of the middle frame close to the display panel has a first bearing portion and a second bearing portion. The first bearing portion is at the edge of the middle frame, and a second light source is disposed on the first bearing portion. The second bearing portion is on one side of the first bearing portion close to the display area of the display panel, and the second bearing portion is connected to the position of the display panel corresponding to the display area. The position where the middle frame is connected to the display panel is set in the display area, and at least two second light sources are arranged in the non-display area, which can improve the problem of darkening of the edge pixel images.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to a display module and a middle frame. Background Art

[0002] Large-sized display devices, such as outdoor display screens, have been widely used in various fields such as video control centers and outdoor advertisements. Since the size of a single display device is very small, an outdoor display screen is generally formed by arranging a plurality of relatively small-sized display units. The plurality of display units cooperate to display an overall picture. And because borderless or narrow-border displays can provide users with a more shocking visual experience, it has become the current trend of display.

[0003] However, each display unit includes a border, and the width of the border of each display unit will directly affect the width of the seam of the splicing screen formed after splicing, thereby affecting the brightness at the seam of the splicing screen, resulting in the picture displayed on the entire outdoor display screen being segmented by the border, causing the picture display to be discontinuous, and further affecting the overall display effect of the splicing screen. Therefore, the splicing screen has higher requirements for the brightness of the border. Summary of the Invention

[0004] At least one embodiment of the present disclosure provides a display module and a middle frame. The display module is configured such that the middle frame has a first bearing portion and a second bearing portion on a side close to the display panel. The first bearing portion is at the edge of the middle frame, and a second light source is provided on the first bearing portion. The second bearing portion is on a side of the first bearing portion close to the display area of the display panel and is connected to a position of the display panel corresponding to the display area, which can solve the problem that the edge pixel pictures of a narrow-border splicing screen are dim due to poor transmittance of the bonding glue and assembly process errors, thereby improving the brightness of the edge pixels of the display module.

[0005] At least one embodiment of the present disclosure provides a display module, which includes: a backlight module and a display panel. Among them, the backlight module includes: a backplane including a bottom plate; a first light source provided on the bottom plate; a middle frame provided between the bottom plate and the display panel; the side of the middle frame close to the display panel has a first bearing portion and a second bearing portion, wherein the first bearing portion is at the edge of the middle frame, and a second light source is provided on the first bearing portion; the second bearing portion is on a side of the first bearing portion close to the display area of the display panel, and the second bearing portion is connected to a position of the display panel corresponding to the display area.

[0006] For example, the display module provided by at least one embodiment of the present disclosure further includes a lamp board provided on the first bearing portion, wherein the second light source includes a plurality of light-emitting diodes provided on the lamp board.

[0007] For example, in the display module provided by at least one embodiment of the present disclosure, in the direction from the display area to the non-display area, at least two light-emitting diodes are provided on the light guide plate.

[0008] For example, the display module provided by at least one embodiment of the present disclosure further includes a light guide plate provided on the first carrying portion, wherein the second light source includes a light bar provided on the side wall of the first carrying portion.

[0009] For example, in the display module provided by at least one embodiment of the present disclosure, the width of the second carrying portion is smaller than the width of the first carrying portion.

[0010] For example, in the display module provided by at least one embodiment of the present disclosure, the width of the second carrying portion is 1% to 10% of the width of the first carrying portion.

[0011] For example, in the display module provided by at least one embodiment of the present disclosure, the middle frame includes an arc-shaped portion protruding towards the first light source, an accommodation space between the arc-shaped portion and the side plate and the bottom plate of the back plate, and a first support portion. The first support portion is provided in the accommodation space and is in an "L" shape. The first end of the first support portion is connected to the surface of the first carrying portion close to the bottom plate, and the second end of the first support portion is connected to the surface of the arc-shaped portion close to the side plate.

[0012] For example, in the display module provided by at least one embodiment of the present disclosure, there is a gap between the first support portion and the side plate.

[0013] For example, in the display module provided by at least one embodiment of the present disclosure, the first support portion divides the accommodation space into a first sub-accommodation space and a second sub-accommodation space, and the volume of the first sub-accommodation space is smaller than the volume of the second sub-accommodation space.

[0014] For example, in the display module provided by at least one embodiment of the present disclosure, signal lines, connectors, and a driving board are provided in the first sub-accommodation space. The first end of the signal line is electrically connected to the second light source, and the second end of the signal line is electrically connected to the driving board through the connector. The driving board is configured to provide an on-voltage to the second light source.

[0015] For example, the display module provided by at least one embodiment of the present disclosure further includes a flexible circuit board, a support foam, and a flexible circuit protection board provided on the side of the side plate away from the second sub-accommodation space. The flexible circuit board is connected to the display panel and is configured to drive the display panel to display.

[0016] For example, in the display module provided by at least one embodiment of the present disclosure, an optical film layer is disposed on a surface of the arc portion close to the first light source, and the optical film layer is configured to direct light emitted by the first light source and irradiated onto the optical film layer to the display panel.

[0017] For example, in the display module provided by at least one embodiment of the present disclosure, the middle frame further includes a second support portion. Wherein, the second support portion is strip-shaped, a first end of the second support portion is connected to the first bearing portion, and a side wall of the second support portion is attached to a side wall of the side plate.

[0018] For example, in the display module provided by at least one embodiment of the present disclosure, the display panel includes a liquid crystal cell and a glass diffusion plate disposed on a side of the liquid crystal cell close to the backlight module, and the second bearing portion is attached to the glass diffusion plate through an adhesive.

[0019] For example, the display module provided by at least one embodiment of the present disclosure further includes a reflective film disposed on the bottom plate, and at least a part of the reflective film is disposed between the bottom plate and a bottom surface of the middle frame and is in contact with both the bottom plate and the bottom surface of the middle frame.

[0020] For example, the display module provided by at least one embodiment of the present disclosure further includes a light-shielding tape. Wherein, the light-shielding tape is connected to a side surface of the display panel, a side surface of the first bearing portion, and a surface of the bottom plate away from the display panel.

[0021] For example, the display module provided by at least one embodiment of the present disclosure further includes a reflective layer disposed between the light-shielding tape and the second light source, and the reflective layer is attached to the light-shielding tape.

[0022] For example, the display module provided by at least one embodiment of the present disclosure further includes a glass plate disposed on a side of the display panel away from the backlight module. Wherein, an edge of the glass plate has an arc portion.

[0023] At least one embodiment of the present disclosure further provides a middle frame, which includes: a first bearing portion and an arc portion connected to an end of the first bearing portion. Wherein, the arc portion protrudes toward a side away from the first bearing portion, and a second bearing portion is disposed at an end of one side of the arc portion; a first support portion is disposed between the first bearing portion and the arc portion, a surface of a first end of the first support portion opposite to a bearing surface of the first bearing portion is connected, and a second end of the first support portion is connected to a surface of the arc portion to form a first sub-accommodation space.

[0024] For example, in the middle frame provided by at least one embodiment of the present disclosure, the first support portion is in an "L" shape.

[0025] For example, in the middle frame provided by at least one embodiment of the present disclosure, a second support portion is provided on a side of the first sub-accommodation space away from the arc portion, and the second support portion is strip-shaped, and a first end of the second support portion is connected to the first bearing portion.

[0026] At least one embodiment of the present disclosure further provides a display module, which includes: a backlight module and a display panel. The backlight module includes a backplane, a first light source, and a middle frame. The backplane includes a bottom plate. The first light source is disposed on the bottom plate. The middle frame is disposed between the bottom plate and the display panel. A first bearing portion and a second bearing portion are provided on a side of the middle frame close to the display panel. The first bearing portion is in the display area of the middle frame, and a second light source is disposed on the first bearing portion. The second bearing portion is on a side of the first bearing portion close to the peripheral area of the display panel, and the second bearing portion is connected to a position corresponding to the edge of the display panel.

[0027] For example, in the display module provided by at least one embodiment of the present disclosure, the width of the second bearing portion is smaller than the width of the first bearing portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, rather than a limitation to the present disclosure.

[0029] Figure 1 It is a schematic cross-sectional structure diagram of a display module provided by at least one embodiment of the present disclosure;

[0030] Figure 2 It is a schematic cross-sectional structure diagram of another display module provided by at least one embodiment of the present disclosure;

[0031] Figure 3 It is a schematic cross-sectional structure diagram of yet another display module provided by at least one embodiment of the present disclosure;

[0032] Figure 4 It is a schematic cross-sectional structure diagram of a liquid crystal cell provided by at least one embodiment of the present disclosure;

[0033] Figure 5 It is a schematic cross-sectional structure diagram of a diffusion plate provided by at least one embodiment of the present disclosure;

[0034] Figure 6 It is a schematic cross-sectional structure diagram of yet another display module provided by at least one embodiment of the present disclosure;

[0035] Figure 7Schematic cross-sectional structure diagram of another display module provided by at least one embodiment of the present disclosure;

[0036] Figure 8 Schematic plan structure diagram of a display device provided by at least one embodiment of the present disclosure;

[0037] Figure 9 Brightness curve graph of a display device provided by at least one embodiment of the present disclosure for display;

[0038] Figure 10 Schematic cross-sectional structure diagram of a middle frame provided by at least one embodiment of the present disclosure; and

[0039] Figure 11 Schematic cross-sectional structure diagram of yet another middle frame provided by at least one embodiment of the present disclosure. Detailed implementation manners

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0041] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the ordinary meanings understood by those of ordinary skill in the art to which the present disclosure pertains. The "first", "second", and similar terms used in the present disclosure do not denote any order, quantity, or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or items appearing before this term cover the elements or items listed after this term and their equivalents, without excluding other elements or items. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left", and "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0042] In the field of large-screen displays, since the production cost of ultra-large-size display screens with a size of over 100 inches is much higher than that of large-size display screens such as 55 inches, due to limitations in manufacturing processes and currently available equipment, the currently largest-size display screens can generally reach 110 inches. Therefore, forming a large screen by multi-screen splicing and performing image display has been widely applied.

[0043] Liquid crystal splicing screens feature high brightness, high color saturation, and high contrast. However, since the liquid crystal in the liquid crystal display panel is fluid, sealant glue is required to enclose the liquid crystal within a specific area, and the sealant glue part cannot be used for display. Additionally, in the glass cutting process, a certain distance needs to be reserved for panel grinding to ensure normal display in the pixel area. This results in an ineliminable "seam" when the spliced liquid crystal display panel is in use. Miniature light-emitting diodes (Mini LED) or micro light-emitting diodes (Micro LED) reduce the resolution at the seam in light-emitting diode displays, but they show significant advantages in terms of contrast and brightness. As the process cost of small-pitch light-emitting diode display technology continues to decrease, facing increasingly fierce competition, researchers in the liquid crystal display panel-related industries have continuously upgraded and optimized in terms of process, structure, optics, etc., achieving a leap in the seam width of the splicing screen from "3.X mm" to "1.X mm" and then to "0.X mm". However, the reduction of the visual width of the "seam" and the optimization of the surrounding image are still the key technical points in current splicing screen displays.

[0044] Currently, the backlight module in narrow bezel liquid crystal splicing screens is attached to the display panel by applying adhesive glue at the edge. Considering the adhesive force and the requirements of product reliability tests, the effective bonding width of the adhesive glue is approximately 1 mm, and the theoretical optical transmittance of the adhesive glue used is between 73% and 85%. Therefore, the image of the final product often appears darker in the edge glue application area, and the brightness is darker closer to the edge. At the same time, affected by the processing and assembly processes, and by the working process of the adhesive glue coating and attaching equipment, the dark area will have uneven brightness. After the terminal product is spliced, the superimposed situation of this defect will affect the overall visual effect of the display module. By optimizing the light reflection angle on the inner surface of the backlight module, reducing the width of the adhesive glue bearing surface, designing the light-emitting diodes with unequal spacing, and using transparent materials instead of non-transparent materials, the phenomenon of dark frame defects can be improved in the front view angle, but the above methods cannot fundamentally eliminate the dark frame defects at the oblique view angle. On the other hand, seamless display products developed based on ultra-narrow seam products use 2.5D glass, that is, by making the edge of ordinary glass have a curvature, the 2.5D glass refracts the light emitted by the backlight source to achieve the effect of magnifying the image. However, due to the uneven brightness of the actual edge pixels caused by the above reasons, it is difficult to improve the effect of seamless display using 2.5D glass.

[0045] The inventors of the present disclosure have noticed that the brightness problem caused by uneven darkening of the edge pixels of the display module will visually exacerbate the problem of the seam of the splicing screen. By changing the structure of the middle frame included in the backlight module, the brightness and uniformity of the edge pixels can be improved, and the effect of near-seamless display can be achieved with the refraction effect of the 2.5D glass.

[0046] At least one embodiment of the present disclosure provides a display module, which includes: a backlight module and a display panel. The backlight module includes a back plate, a first light source, and a middle frame. The back plate includes a bottom plate, the first light source is disposed on the bottom plate, the middle frame is disposed between the bottom plate and the display panel, and one side of the middle frame close to the display panel has a first bearing portion and a second bearing portion. The first bearing portion is at the edge of the middle frame, and a second light source is disposed on the first bearing portion. The second bearing portion is on one side of the first bearing portion close to the display area of the display panel, and the second bearing portion is connected to the position corresponding to the display area of the display panel. The structure of the display module is simple, the cost is low, and the phenomenon of dark frame defects can be avoided.

[0047] For example, Figure 1 is a schematic cross-sectional structure diagram of a display module provided by at least one embodiment of the present disclosure. As Figure 1 shown, the display module 10 includes: a backlight module 101 and a display panel 102. The backlight module 101 includes a back plate 1011, a first light source 1012, and a middle frame 1013. The back plate 1011 includes a bottom plate 1011a, the first light source 1012 is disposed on the bottom plate 1011a, the middle frame 1013 is disposed between the bottom plate 1011a and the display panel 102, and one side of the middle frame 1013 close to the display panel 102 has a first bearing portion 1013a and a second bearing portion 1013b. The first bearing portion 1013a is at the edge of the middle frame 1013, and a second light source 1014 is disposed on the first bearing portion 1013a. The second bearing portion 1013b is on one side of the first bearing portion 1013a close to the display area of the display panel 102, and the second bearing portion 1013b is connected to the position corresponding to the display area of the display panel 102. By setting the connection position between the middle frame 1013 and the display panel 102 in the display area and arranging at least two second light sources 1014 in the non-display area, the problem of darkening of the edge pixel images can be improved.

[0048] For example, the surfaces of the first bearing portion 1013a and the second bearing portion 1013b are both parallel to the surface of the display panel.

[0049] For example, although Figure 1The cross-sectional shape of the gap between the first carrier portion 1013a and the display panel 102 is shown as a rectangular notch. The cross-sectional shape of the gap between the first carrier portion 1013a and the display panel 102 may also be a non-rectangular structure, such as circular or elliptical, etc. The embodiments of the present disclosure do not limit this.

[0050] For example, as Figure 1 shown, the display panel 102 and the backlight module 101 are bonded at the position of the second carrier portion 1013b through the first adhesive 103 for connection. Specifically, the surface of the middle frame 1013 included in the backlight module 101 close to the display panel 102 is bonded to the display panel 102 through the first adhesive 103. The first adhesive 103 may cover the entire second carrier portion 1013b or a part of the second carrier portion 1013b. The embodiments of the present disclosure do not limit this.

[0051] For example, as Figure 1 shown, the display module 10 further includes a light guide plate 1015 disposed on the first carrier portion 1013a, and the second light source 1014 includes a plurality of light-emitting diodes disposed on the light guide plate 1015.

[0052] For example, as Figure 1 shown, in the direction A - A' from the display area to the non-display area, at least two light-emitting diodes are disposed on the light guide plate 1015. In an actual product, a plurality of light-emitting diodes are arranged in a complete circle around the display panel 102.

[0053] For example, the non-display area is the border area of the display panel. In the direction A - A' from the display area to the non-display area, the size of the border area is smaller than the width of the first carrier portion, and the width of the first carrier portion is half or 1 / 3 of the size of the border area.

[0054] For example, Figure 2 is a schematic cross-sectional structure diagram of another display module provided by at least one embodiment of the present disclosure. Figure 2 Different from Figure 1 the display module 10 shown in Figure 2 in, in Figure 1 the display module 10 includes a light guide plate 1016 disposed on the first carrier portion 1013a, and the second light source 1014 includes a light bar disposed on the side wall of the first carrier portion 1013a, that is, the second light source 1014 is not Figure 1 the structure in which a plurality of light-emitting diodes are disposed on the light guide plate in Figure 2 For example, in

[0055] the light bar is arranged in a complete circle around the display panel 102.

[0055] For example, the light guide plate 1016 is a dot-type light guide plate, which can uniformly emit the light emitted from the light bar.

[0056] For example, as shown in Figure 1 and Figure 2 , in the display module 10, the width of the second bearing part 1013b is smaller than the width of the first bearing part 1013a, so that it can be ensured that the area at the connection between the backlight module 101 and the display panel 102 is small enough, and the area irradiated by the light emitted by the second light source 1014 arranged in the edge area is large enough, so as to realize the improvement of the brightness at the edge position.

[0057] For example, as shown in Figure 1 and Figure 2 , the width of the second bearing part 1013b is 1% - 10% of the width of the first bearing part 1013a. For example, the width of the second bearing part 1013b is 1%, 2%, 4%, 6%, 8% or 10% of the width of the first bearing part 1013a.

[0058] It should be noted that the widths of the first bearing part 1013a and the second bearing part 1013b are respectively Figure 1 or Figure 2 the widths in the direction A - A' from the display area to the non - display area in

[0059] For example, as shown in Figure 1 and Figure 2 , the middle frame 1013 includes an arc - shaped part 1013c protruding towards the first light source 1012, a receiving space D between the arc - shaped part 1013c, the side plate 1011b and the bottom plate 1011a of the back plate 1011, and a first support part 1013d. The first support part 1013d is arranged in the receiving space D, and the first support part 1013d is in an "L" shape. The first end of the first support part 1013d is connected to the surface of the first bearing part 1013a close to the bottom plate 1011a, and the second end of the first support part 1013d is connected to the surface of the arc - shaped part 1013c close to the side plate 1011b. It should be noted that the first support part 1013d can also be in other shapes such as serrated, and the embodiments of the present disclosure do not limit this.

[0060] For example, as shown in Figure 1 and Figure 2 , there is a gap 117 between the first support part 1013d and the side plate 1011b.

[0061] For example, as shown in Figure 1 and Figure 2 , the first support part 1013d divides the receiving space D into a first sub - receiving space D1 and a second sub - receiving space D2, and the volume of the first sub - receiving space D1 is smaller than the volume of the second sub - receiving space D2.

[0062] For example,Figure 3 Another cross-sectional structure diagram of a display module provided by at least one embodiment of the present disclosure, as Figure 3 shown, a signal line 104, a connector 105, and a driving board 106 are disposed in the first sub-accommodating space D1. A first end of the signal line 104 is electrically connected to a second light source 1014, and a second end of the signal line 104 is electrically connected to the driving board 106 through the connector 105. The driving board 106 is configured to provide a turn-on voltage to the second light source 1014.

[0063] For example, as Figure 3 shown, the display module 10 further includes a flexible circuit board 107, a support foam 108, and a flexible circuit protection board 109 disposed on a side of the side plate 1011b away from the second sub-accommodating space D2. The flexible circuit board 107 is connected to the display panel 102, and the flexible circuit board 107 is configured to drive the display panel 102 to display.

[0064] For example, as Figure 3 shown, the light-emitting height of the first light source 1012 is OD1, and the value range of OD1 is 25 mm to 35 mm. For example, OD1 can be 25 mm, 28 mm, 30 mm, 32 mm, or 35 mm; the light-emitting height of the second light source 1014 is OD2, and OD2 is 5 mm to 10 mm. For example, the value of the light-emitting height OD2 of the second light source 1014 can be 5 mm, 6 mm, 8 mm, or 10 mm. The height of the B space is a locking and fixing area of a part of the middle frame 1013, a part of the back plate 1011, and the flexible circuit protection board 109. For example, the range of B is 6 mm to 10 mm. For example, the range of B can be 6 mm, 7 mm, 8 mm, 9 mm, or 10 mm. The height of the A space is a space area where the flexible circuit board 107 is placed, and the range of B is 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, or 20 mm.

[0065] For example, as Figure 1 , Figure 2 and Figure 3 shown, the middle frame 1013 further includes a second support portion 1013e. The second support portion 1013e is in a long strip shape. A first end of the second support portion 1013e is connected to the first bearing portion 1013a, and a side wall of the second support portion 1013e is attached to a side wall of the side plate 1011b to support the side plate 1011b.

[0066] For example, as Figure 1 , Figure 2 and Figure 3 shown, a second end of the second support portion 1013e is in a suspended state.

[0067] For example, as Figure 1 ,Figure 2 and Figure 3 As shown in Figure 3 , the surface of the middle frame 1013 that contacts the bottom plate 1011a of the back plate 1011 is parallel to the main surface of the bottom plate 1011a, so that the middle frame 1013 and the bottom plate 1011a can be completely fitted, and further the middle frame 1013 can be stably fixed on the bottom plate 1011a.

[0068] For example, as Figure 1 、 Figure 2 and Figure 3 As shown in Figure 3 , the display panel 102 includes a liquid crystal cell 1021 and a diffusion plate 1022 (e.g., a glass diffusion plate) disposed on the side of the liquid crystal cell 1021 close to the backlight module 101. The second bearing portion 1013b and the glass diffusion plate are adhered by an adhesive 103. For example, the adhesive 1023 can be an ultraviolet curable adhesive, a hot melt adhesive, or a glue formed by combining an ultraviolet curable adhesive and a hot melt adhesive. The light emitted by the first light source 1012 and the second light source 1014 can be transmitted to the liquid crystal cell 1021 through the adhesive 1023.

[0069] For example, Figure 4 is a schematic cross-sectional structure diagram of a liquid crystal cell provided by at least one embodiment of the present disclosure. The liquid crystal cell 1021 includes a first substrate 1021a and a second substrate 1021b that face and are separated from each other, and a liquid crystal layer 1021c between the first substrate 1021a and the second substrate 1021b. Although not shown, a plurality of gate lines and a plurality of data lines are formed on the inner surface of the first substrate (e.g., an array substrate) 1021a. The plurality of gate lines and the plurality of data lines intersect each other to define pixel regions, and thin film transistors (TFTs) are connected to both the gate lines and the data lines. The transparent pixel electrodes in each pixel region are electrically connected to the source or drain of the thin film transistor. In addition, a black matrix covering the gate lines, data lines, and thin film transistors is formed on the inner surface of the second substrate (e.g., a color filter substrate) 1021b, and a color filter layer including a red filter, a green filter, and a blue filter is formed on the black matrix. For example, a transparent common electrode is formed on the color filter layer.

[0070] As Figure 4 shown, a first alignment layer (not shown in Figure 4 ) is formed between the first substrate 1021a and the liquid crystal layer 1021c, and a second alignment layer (not shown in Figure 4 ) is formed between the second substrate 1021b and the liquid crystal layer 1021c. Figure 4(not shown in the figure). Additionally, a sealing pattern 1021d is formed in the edge portion between the first substrate 1021a and the second substrate 1021b. The sealing pattern 1021d is, for example, a frame sealant pattern to prevent leakage of the liquid crystal layer. For example, the sealing pattern 1021d is not limited to a thermosetting frame sealant or an ultraviolet light-curing frame sealant. The sealing pattern 1021d forms an accommodation space between the first substrate 1021a and the second substrate 1021b, and the liquid crystal layer 1021c is disposed in this accommodation space.

[0071] For example, a first polarizer ( Figure 4 (not shown in the figure) and a second polarizer ( Figure 4 (not shown in the figure) may be respectively formed on the outer surfaces of the first substrate 1021a and the second substrate 1021b. The embodiments of the present disclosure do not limit this.

[0072] For example, the materials of the first substrate 1021a and the second substrate 1021b may include glass, plastic, or other light-transmitting materials, and the materials of the first substrate 1021a and the second substrate 1021b may be the same or different.

[0073] It should be noted that in the Figure 4 shown structure, a liquid crystal display panel is formed with the liquid crystal layer 1021c as the display medium. In the embodiments of the present disclosure, the display medium may also be an organic electroluminescent material or an electrophoretic material. The embodiments of the present disclosure do not limit this.

[0074] For example, the diffuser 1022 may also be other types of diffusers other than a glass diffuser. For example, Figure 5 is a schematic cross-sectional structure diagram of a diffuser provided by at least one embodiment of the present disclosure. As Figure 5 shown, the diffuser includes: a diffusion sheet 1022a, a prism sheet 1022b, and a brightness enhancement film 1022c or other optical composite film materials. The diffusion sheet 1022a, the prism sheet 1022b, and the brightness enhancement film 1022c may be sequentially laminated on a transparent substrate. The transparent substrate needs to have a certain strength and performance against thermal expansion and contraction. For example, the transparent substrate may be a glass substrate. It should be understood that in other exemplary embodiments, the diffuser 1022 may also have other structures. For example, the diffusion sheet 1022a, the prism sheet 1022b, and the brightness enhancement film 1022c may be stacked in other orders in sequence, or, in one example, the diffuser 1022 only includes the diffusion sheet 1022a and the prism sheet 1022b, etc. These all fall within the scope of protection of the embodiments of the present disclosure.

[0075] For example, as Figure 1 , Figure 2 and Figure 3As shown, the display module 10 further includes a reflective film 112 disposed on the bottom plate 1011a, and the reflective film 112 is at least partially disposed between the bottom plate 1011a and the bottom surface of the middle frame 1013, and the reflective film 112 is in contact with both the bottom plate 1011a and the bottom surface of the middle frame 1013.

[0076] For example, as Figure 1 , Figure 2 and Figure 3 shown, one side of the middle frame 1013 close to the first light source 1012 has an arc-shaped surface protruding toward the first light source 1012, and an optical film layer 113 is disposed on the arc-shaped surface. The optical film layer 113 is configured to direct the light emitted by the first light source 1012 and irradiated onto the optical film layer 1012 to the display panel 102. For example, the arc-shaped surface protruding toward the first light source 1012 is more conducive to light conduction.

[0077] It should be noted that since the optical film layer 113 has a certain lateral light guiding property, when the outer contour dimensions of the optical film layer 113 and the arc-shaped surface of the middle frame 1013 do not exactly match and there is a small error, that is, when the optical film layer 113 is not completely attached to the arc-shaped surface of the middle frame 1013, the optical film layer 113 can still achieve the function of light guiding.

[0078] For example, disposing the optical film layer 113 on the arc-shaped surface of the middle frame 1013 can prevent the arc-shaped surface of the middle frame 1013 from absorbing the light emitted by the first light source, thereby avoiding the phenomenon of poor darkening at the edge of the display module. A specific implementation of disposing the optical film layer 113 on the arc-shaped surface of the middle frame 1013 can be to coat a layer of white paint on the arc-shaped surface of the middle frame 1013. There can be more implementation methods for disposing the optical film layer 113 on the arc-shaped surface of the middle frame 1013. For example, depositing a reflective metal layer on the arc-shaped surface of the middle frame 1013, and these all fall within the scope of protection of the embodiments of the present disclosure.

[0079] For example, the optical film layer 113 can be connected to the display panel 102 through a transparent adhesive layer ( Figure 1 , Figure 2 and Figure 3 not shown in all of them). The transparent adhesive layer has strong light transmittance, and the light on the light-emitting side of the optical film layer 113 can be transmitted to the display panel 102 through the transparent adhesive layer, thereby avoiding the problem of poor display effect caused by darkening of the border of the display panel 102. For example, the transparent adhesive layer can be an ultraviolet curable adhesive, a hot melt adhesive, or a glue formed by combining an ultraviolet curable adhesive and a hot melt adhesive, etc.

[0080] For example, as Figure 1 , Figure 2 and Figure 3As shown, the display module 10 further includes a light-shielding tape 114, which is connected to the side surface of the display panel 102, the side surface of the first carrier portion 1013a, and the surface of the bottom plate 1011a away from the display panel 102. For example, in the overall structure of the display module 10, the display module 10 includes protective cases provided at the respective edges of the backlight module 101. The protective cases may include a rubber frame portion (not shown in the figure) and a tape portion (i.e., the light-shielding tape 114). The rubber frame portion is connected to the bottom plate 1011a of the backplane 1011, and the light-shielding tape 114 is connected between the middle frame 1013 and the rubber frame portion, and covers a part of the surface of the display panel 102 on the side away from the backlight module 101 and a part of the surface of the backplane 1011. In addition, the sides of the display module 10 can be wound with a sealing tape to achieve the sealing of the display module 10.

[0081] For example, the light-shielding tape 114 is integrally sealed to prevent light leakage.

[0082] For example, the light-shielding tape 114 can not only protect the connected display panel 102, first carrier portion 1013a, and bottom plate 1011a, but also enable the respective display modules to be spliced when a splicing screen is formed subsequently.

[0083] For example, as Figure 1 、 Figure 2 and Figure 3 As shown, the display module 10 further includes a reflective layer 115 provided between the light-shielding tape 114 and the second light source 1014, and the reflective layer 115 is attached to the light-shielding tape 114. The reflective layer 115 can reflect the light emitted by the second light source 1014 to the edge region, so that more of the light emitted by the second light source 1014 is directed to the display panel 102, thereby improving the utilization rate of the light emitted by the second light source 1014.

[0084] For example, as Figure 1 、 Figure 2 and Figure 3 As shown, the display module 10 further includes a glass plate 116 provided on the side of the display panel 102 away from the backlight module 101. The edge of the glass plate 116 has an arc portion to form a 2.5D glass. The 2.5D glass refracts the light emitted by the backlight source to achieve the effect of magnifying the image, and the 2.5D glass can be used for seamless display in the display module.

[0085] For example, Figure 6 is a schematic cross-sectional structure diagram of another display module provided by at least one embodiment of the present disclosure. Figure 6 The cross-sectional structure of the shown display module is symmetrically arranged with the cross-sectional structure of the display module shown in Figure 3 As Figure 6As shown, a signal line 104, a connector 105, and a driving board 106 are disposed in the first sub-accommodating space D1. A first end of the signal line 104 is electrically connected to the second light source 1014, and a second end of the signal line 104 is electrically connected to the driving board 106 through the connector 105. The driving board 106 is configured to provide a turn-on voltage to the second light source 1014. Different from Figure 3 is that a flexible circuit board, a support foam, and a flexible circuit protection board are not disposed in the second sub-accommodating space D2 of the display module 10.

[0086] For example, in combination with Figure 1 and Figure 6 , the width W of the first bearing portion 1013a is 10 mm to 20 mm. For example, the width W of the first bearing portion 1013a is 10 mm, 12 mm, 14 mm, 16 mm, 18 mm, or 20 mm, so as to ensure the support strength for the display panel while saving the manufacturing cost of the second light source on the first bearing portion 1013a.

[0087] For example, Figure 6 the other structures in Figure 3 can be referred to the relevant descriptions in the above

[0088] and will not be elaborated herein. Figure 7 For example, Figure 7 is a schematic cross-sectional structure diagram of another display module provided by at least one embodiment of the present disclosure. As shown in

[0089] For example, as shown in Figure 7As shown, the middle frame 4013 includes an arc portion 404 connected to the end of the first bearing portion 4013a. The arc portion 404 bulges towards the side close to the first bearing portion 4013a, and the second bearing portion 4013b is arranged at the end on one side of the arc portion 404. A first support portion 405 is arranged between the first bearing portion 4013a and the arc portion 404. The first end of the first support portion 405 is connected to the surface of the first bearing portion 4013a, and the second end of the first support portion 405 is connected to the surface of the arc portion 404 to form a first sub-accommodation space 406, and a circuit board or the like can be placed in the first sub-accommodation space 406.

[0090] For example, as Figure 7 shown, the first support portion 405 has a shape with a corner, so that the first support portion 405 can support the first bearing portion 4013a and the arc portion 404.

[0091] For example, as Figure 7 shown, an optical film layer 413 is arranged on the surface of the first support portion 405 close to the first light source 1012. The optical film layer 413 is configured to direct the light emitted by the first light source 4012 and irradiated on the optical film layer 4012 to the display panel 402. For example, the arc surface bulging towards the side of the first light source 4012 is more conducive to the conduction of light.

[0092] For example, arranging the optical film layer 413 on the surface of the first support portion 405 close to the first light source 1012 can prevent the first support portion 405 from absorbing the light emitted by the first light source 1012, thereby avoiding the phenomenon of poor darkening at the edge of the display module 40. A specific implementation manner of arranging the optical film layer 413 on the surface of the first support portion 405 close to the first light source 1012 can be to coat a layer of white paint on the surface of the first support portion 405 close to the first light source 1012. There can be more implementation manners for arranging the optical film layer 413 on the surface of the first support portion 405 close to the first light source 1012. For example, evaporating a reflective metal layer on the surface of the first support portion 405 close to the first light source 1012, and these all belong to the scope protected by the embodiments of the present disclosure.

[0093] For example, as Figure 7 shown, the display module 40 further includes a glass plate 416 arranged on the side of the display panel 402 away from the backlight module 401. The edge of the glass plate 416 has an arc portion to form a 2.5D glass. The 2.5D glass refracts the light emitted by the backlight source to achieve the effect of magnifying the image, and the 2.5D glass can be used for seamless display in the display module.

[0094] For example, the relevant features of the first light source 4012 and the second light source 4014 can refer to the relevant descriptions above and will not be elaborated here.

[0095] For example, the width of the second bearing portion 4013b is smaller than the width of the first bearing portion 4013a. For example, as Figure 7 shown, the width of the second bearing portion 4013b is 1% to 10% of the width of the first bearing portion 4013a. For example, the width of the second bearing portion 4013b is 1%, 2%, 4%, 6%, 8% or 10% of the width of the first bearing portion 4013a.

[0096] It should be noted that the widths of the first bearing portion 4013a and the second bearing portion 4013b are Figure 7 the widths of the first bearing portion 4013a and the second bearing portion 4013b in the direction A-A' from the display area to the non-display area.

[0097] For example, Figure 8 is a schematic plan view of a display device provided by at least one embodiment of the present disclosure. As Figure 8 shown, the display device 20 includes a splicing screen formed by a plurality of display modules 10 or 40 provided in any of the above embodiments. For example, although Figure 8 shown in is a splicing screen formed by splicing 6 display modules 10 in the display device 20, the embodiments of the present disclosure are not limited thereto. The display device may further include more display modules 10, for example, 2, 4, 9, etc. The plurality of display modules 10 are spliced with each other, and a splicing seam a is formed between any two adjacent display modules 10. In some examples, the display module 10 may be a liquid crystal display module, an organic light emitting diode (OLED) display module or an electrophoretic display module. At least a second light source 1014 is disposed adjacent to the splicing seam a. Adjacent to the splicing seam means a range within about 1 cm of the length from the splicing seam a, which can be determined according to the size of the display device. Combining Figure 8 and Figure 3 , the second light source 1014 may be a light emitting diode (LED), or a light bar composed of a plurality of light emitting diodes, or other components capable of emitting light, for example, an organic light emitting diode (OLED). In the embodiments of the present disclosure, the second light source 1014 is taken as an example of a light bar arranged in a straight line, and each display module 10 is respectively provided with a second light source 1014 adjacent to the splicing seam a.

[0098] For example, the display device 10 includes any of the above display modules. The display device in the embodiments of the present disclosure may be: a display, an electronic paper, a mobile phone, a tablet computer, a notebook computer, a digital photo frame, a navigator, or any product or component with a display function.

[0099] For example, Figure 9The brightness curve graph for the display of the display device provided by at least one embodiment of the present disclosure is as follows. Figure 9 As shown, the abscissa is the distance to the edge of the display device, and the ordinate is the brightness of the edge of the display device corresponding to different abscissas. It can be seen from Figure 9 that when the distance to the edge of the display device is 4.5 mm, the maximum brightness of the display device is 167 nit. And through the edge brightness curve test, it can be obtained that the uniformity of the edge brightness of the display device provided by the embodiment of the present disclosure can reach 95%.

[0100] At least one embodiment of the present disclosure further provides a middle frame, which includes: a first bearing part and an arc part connected to the end of the first bearing part. The arc part protrudes away from the first bearing part, and a second bearing part is arranged at one end of the arc part. A first support part is arranged between the first bearing part and the arc part. The first end of the first support part is connected to the surface of the first bearing part opposite to the bearing surface, and the second end of the first support part is connected to the surface of the arc part to form a first sub-accommodation space. The structure of this middle frame is simple and the cost is relatively low. Using this middle frame in the display module can avoid the phenomenon of dark frame defects.

[0101] For example, Figure 10 The cross-sectional structure schematic diagram of a middle frame provided by at least one embodiment of the present disclosure is as follows. Figure 10 As shown, the middle frame 30 includes: a first bearing part 301 and an arc part 302 connected to the end of the first bearing part 301. The arc part 302 protrudes away from the first bearing part 301, and a second bearing part 303 is arranged at one end of the arc part 302. A first support part 304 is arranged between the first bearing part 301 and the arc part 302. The first end of the first support part 304 is connected to the surface of the first bearing part 301 opposite to the bearing surface, and the second end of the first support part 304 is connected to the surface of the arc part 302 to form a first sub-accommodation space 305. The first support part 304 can support the first bearing part 301 and the arc part 302.

[0102] It should be noted that the bearing surface of the first bearing part 301 refers to the surface of the first bearing part 301 that is used as the subsequent bearing surface for the light source, or the surface closer to the display panel.

[0103] For example, Figure 10 The structure of the middle frame 30 shown is simple and the production cost is relatively low. When the middle frame 30 is used in the display module, the phenomenon of dark frame defects can be avoided.

[0104] For example, as Figure 10As shown, the first support portion 304 is in an "L" shape, so that the first support portion 304 can support the first bearing portion 301 and the arc portion 302. It should be noted that the first support portion 304 can also be in other shapes such as serrated, and the embodiments of the present disclosure do not limit this.

[0105] For example, as Figure 10 shown, a second support portion 306 is provided on a side of the first sub-accommodation space 305 away from the arc portion 302, and the second support portion 306 is in a long strip shape. A first end of the second support portion 306 is connected to the first bearing portion 301.

[0106] For example, as Figure 10 shown, a second end of the second support portion 306 is in a suspended state.

[0107] For example, for other structures in the middle frame 30, reference can be made to the relevant descriptions of the display module above, which will not be elaborated here.

[0108] For example, Figure 11 is a schematic cross-sectional structure diagram of another middle frame provided by at least one embodiment of the present disclosure. As Figure 11 shown, the middle frame 50 includes a first bearing portion 501 and an arc portion 502 connected to an end of the first bearing portion 501. The arc portion 502 protrudes toward the side close to the first bearing portion 501, and a second bearing portion 503 is provided at an end on one side of the arc portion 502. A first support portion 504 is provided between the first bearing portion 501 and the arc portion 502. A first end of the first support portion 504 is connected to a surface of the first bearing portion 501 opposite to the bearing surface, and a second end of the first support portion 504 is connected to a surface of the arc portion 502 to form a first sub-accommodation space 505.

[0109] For example, as Figure 11 shown, the first support portion 504 is in a shape with a corner, so that the first support portion 504 can support the first bearing portion 501 and the arc portion 502.

[0110] For example, as Figure 11 shown, the width of the second bearing portion 503 is smaller than the width of the first bearing portion 501. The width of the second bearing portion 503 is 1% to 10% of the width of the first bearing portion 501. For example, the width of the second bearing portion 503 is 1%, 2%, 4%, 6%, 8% or 10% of the width of the first bearing portion 501.

[0111] In the overall structure, the middle frame 50 is provided in a complete circle, and the first sub-accommodation space 505 also correspondingly forms a hollow straight cylinder shape.

[0112] The display module and middle frame provided by at least one embodiment of the present disclosure have at least one of the following beneficial technical effects:

[0113] (1) In the display module provided by at least one embodiment of the present disclosure, by providing a first bearing portion at the edge of the middle frame, providing a second light source on the first bearing portion, and connecting the second bearing portion to the position corresponding to the display area of the display panel, the problem of darkening of the edge pixel images caused by poor transmittance of the bonding glue and assembly process errors in the narrow bezel splicing screen is solved, so that the brightness of the edge pixels of the display module can be improved.

[0114] (2) In the display module provided by at least one embodiment of the present disclosure, a glass plate is provided on the side of the display panel away from the backlight module, and the edge of the glass plate has an arc portion to form a 2.5D glass. The 2.5D glass refracts the light emitted by the backlight source to achieve the effect of magnifying the image, and the 2.5D glass can be used for seamless display in the display module.

[0115] The following points need to be explained:

[0116] (1) The drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the general design.

[0117] (2) For clarity, in the drawings used to describe the embodiments of the present disclosure, the thickness of the layer or region is enlarged or reduced, that is, these drawings are not drawn according to the actual scale.

[0118] (3) Without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0119] As mentioned above, the above are only the specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. The protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A display module, comprising: Backlight module and display panel, wherein, The backlight module includes: A back plate including a bottom plate; A first light source disposed on the bottom plate; A middle frame disposed between the bottom plate and the display panel; One side of the middle frame close to the display panel has a first bearing portion and a second bearing portion, wherein the first bearing portion is at the edge of the middle frame, and a second light source is disposed on the first bearing portion; The second bearing portion is on one side of the first bearing portion close to the display area of the display panel, and the second bearing portion is connected to a position of the display panel corresponding to the display area; The middle frame includes an arc portion protruding toward the first light source, and an optical film layer is disposed on a surface of the arc portion close to the first light source, and the optical film layer is configured to direct light emitted by the first light source and irradiated on the optical film layer to the display panel.

2. The display module according to claim 1 further includes a light board disposed on the first bearing portion, wherein, The second light source includes a plurality of light emitting diodes disposed on the lamp board.

3. The display module according to claim 2, wherein, In a direction from the display area to the non-display area, at least two light emitting diodes are disposed on the lamp board.

4. The display module according to claim 1 further includes a light guide plate disposed on the first bearing portion, wherein, The second light source includes a lamp strip disposed on a side wall of the first bearing portion.

5. The display module according to any one of claims 1 to 4, wherein, The width of the second bearing portion is smaller than the width of the first bearing portion.

6. The display module according to claim 5, wherein, The width of the second bearing portion is 1% to 10% of the width of the first bearing portion.

7. The display module according to any one of claims 1 to 4, wherein, In a receiving space between the arc portion, a side plate of the back plate, and the bottom plate, a first support portion is disposed in the receiving space, and the first support portion is in an "L" shape. A first end of the first support portion is connected to a surface of the first bearing portion close to the bottom plate, and a second end of the first support portion is connected to a surface of the arc portion close to the side plate.

8. The display module according to claim 7, wherein, There is a gap between the first support portion and the side plate.

9. The display module according to claim 7, wherein, The first support portion divides the receiving space into a first sub-receiving space and a second sub-receiving space, and the volume of the first sub-receiving space is smaller than the volume of the second sub-receiving space.

10. The display module according to claim 9, wherein, A signal line, a connector, and a driving board are disposed in the first sub-receiving space. A first end of the signal line is electrically connected to the second light source, and a second end of the signal line is electrically connected to the driving board through the connector. The driving board is configured to provide an enabling voltage to the second light source.

11. The display module according to claim 9, further comprising a flexible circuit board, a support foam, and a flexible circuit protection board disposed on a side of the side plate away from the second sub-receiving space. The flexible circuit board is connected to the display panel and is configured to drive the display panel to display.

12. The display module according to claim 7, wherein, The middle frame further includes a second support portion, wherein the second support portion is in a long strip shape. A first end of the second support portion is connected to the first bearing portion, and a side wall of the second support portion is attached to a side wall of the side plate.

13. The display module according to claim 1, wherein, The display panel includes a liquid crystal cell and a glass diffusion plate disposed on a side of the liquid crystal cell close to the backlight module. The second bearing portion is adhered to the glass diffusion plate through an adhesive.

14. The display module according to claim 1 further includes a reflective film disposed on the bottom plate, and at least a part of the reflective film is disposed between the bottom plate and the bottom surface of the middle frame and is in contact with both the bottom plate and the bottom surface of the middle frame.

15. The display module according to claim 1 further includes a light-shielding tape, wherein, The light-shielding tape is connected to the side surface of the display panel, the side surface of the first bearing portion, and the surface of the bottom plate away from the display panel.

16. The display module according to claim 15 further includes a reflective layer disposed between the light-shielding tape and the second light source, and the reflective layer is attached to the light-shielding tape.

17. The display module according to claim 1 further includes a glass plate disposed on a side of the display panel away from the backlight module, wherein, The edge of the glass plate has an arc portion.

18. A middle frame, comprising: A first bearing portion and an arc portion connected to the end of the first bearing portion, wherein the arc portion protrudes toward the side away from the first bearing portion, and a second bearing portion is provided at one end of the arc portion; a first support portion is provided between the first bearing portion and the arc portion, a first end of the first support portion is connected to the surface of the first bearing portion opposite to the bearing surface, and a second end of the first support portion is connected to the surface of the arc portion to form a first sub-accommodation space; The width of the second bearing portion is 1% to 10% of the width of the first bearing portion.

19. The middle frame according to claim 18, wherein, The first support portion is in an "L" shape.

20. The middle frame according to claim 19, wherein A second support portion is provided on the side of the first sub-accommodation space away from the arc portion, and the second support portion is in a strip shape, and a first end of the second support portion is connected to the first bearing portion.

Images