Backlight module, display module and display device

Abstract

The present invention discloses a backlight module, a display module and a display device, which belong to the field of display technology. The backlight module is used to provide a light source for a first display panel, and the backlight module includes: a middle frame and a fixing member; the middle frame is a hollow frame body, and a support platform is arranged on the inner side of the middle frame, and the support platform is used to support the first display panel; the fixing member includes a first fixing part and a second fixing part connected to each other, the first fixing part is used to be fixed to the middle frame, the second fixing part is arranged opposite to the support platform, and the first display panel is used to be arranged between the support platform and the second fixing part. In the process of transporting the first display panel, the backlight module provided by the present invention can protect the first display panel, prevent the display panel from being scratched, and ensure the display effect of the display device.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a backlight module, a display module and a display device. Background Art

[0002] The display panel in the liquid crystal display device needs to use the light source provided by the backlight module to display the picture. In order to achieve a high dynamic contrast ratio of the liquid crystal display device, a double-layer display panel is usually set in the liquid crystal display device.

[0003] In the related art, panel manufacturers usually bond two display panels together and sell them to downstream manufacturers, and the downstream manufacturers can assemble the double-layer display panel with a backlight module to obtain a liquid crystal display device.

[0004] However, since the double-layer display panel has no backlight module to provide protection, the display panel is easily scratched during the process of transporting the double-layer display panel, which affects the display effect of the liquid crystal display device. Summary of the invention

[0005] The embodiments of the present invention provide a backlight module, a display module and a display device, which can solve the problem in the related art that the display panel is easily scratched during the transportation of the double-layer display panel, thereby affecting the display effect of the liquid crystal display device. The technical solution is as follows:

[0006] In a first aspect, a backlight module is provided, the backlight module is used to provide a light source for a first display panel, the backlight module comprises: a middle frame and a fixing member;

[0007] The middle frame is a hollow frame, and a support platform is provided inside the middle frame, and the support platform is used to support the first display panel;

[0008] The fixing member includes a first fixing portion and a second fixing portion connected to each other, the first fixing portion is used to be fixed to the middle frame, the second fixing portion is arranged opposite to the support platform, and the first display panel is used to be arranged between the support platform and the second fixing portion.

[0009] Optionally, the first fixing portion and the second fixing portion are both plate-shaped structures, the first fixing portion is perpendicular to the second fixing portion, and the second fixing portion is parallel to the support platform;

[0010] The first fixing portion is provided with a through hole, and the first fixing portion is fixed to the middle frame through the through hole.

[0011] Optionally, a protrusion structure is provided on the outer side of the middle frame, and the protrusion structure is used to be snapped into the through hole of the first fixing part.

[0012] Optionally, threaded holes are provided on the outer side of the middle frame, the threaded holes on the middle frame correspond one-to-one to the through holes on the first fixing part, and the first fixing part is fixed to the middle frame by bolts.

[0013] Optionally, the first fixing portion and the second fixing portion are both plate-shaped structures, the first fixing portion is perpendicular to the second fixing portion, and the second fixing portion is parallel to the support platform;

[0014] The first fixing portion is bonded and fixed to the middle frame.

[0015] Optionally, the second fixing portion is a plate-shaped structure parallel to the support platform, and the first fixing portion is a clamping structure;

[0016] The middle frame is provided with a clamping groove, and the clamping structure is used for clamping in the clamping groove.

[0017] Optionally, the upper end surface of at least one frame edge of the middle frame is provided with the snap-fit ​​groove, and the width of the top of the snap-fit ​​groove is smaller than the width of the bottom;

[0018] The width of the top and the width of the bottom of the clamping structure are both smaller than the width of the middle part;

[0019] Among them, the upper end surface of the middle frame is the surface in contact with the second fixing portion, the top is close to the upper end surface relative to the bottom, the width direction of the snap-in groove is perpendicular to the extension direction of the frame edge where the snap-in groove is located, and the width direction of the snap-in structure is parallel to the width direction of the snap-in groove.

[0020] Optionally, the length direction of the second fixing portion is parallel to the extension direction of the frame edge where the clamping groove is located, and the fixing member includes two first fixing portions, the two first fixing portions are arranged at two ends of the second fixing portion, and the connection direction of the two first fixing portions is parallel to the length direction of the second fixing portion;

[0021] Each of the first fixing parts includes a first fixing plate and a second fixing plate which are arranged opposite to each other;

[0022] The distance between the first fixing plate and the second fixing plate first increases and then decreases in a direction away from the second fixing portion.

[0023] Optionally, the backlight module includes: a plurality of the fixing members, and the plurality of the fixing members are arranged on the middle frame in a surrounding manner.

[0024] Optionally, the fixing piece is made of injection molding material or stainless steel metal material.

[0025] Optionally, the backlight module further includes: a back plate, a light guide plate, an optical film and a light source;

[0026] The light source, the light guide plate and the optical film are all arranged on the back plate, and are all located on a side of the support platform of the middle frame away from the first display panel.

[0027] In a second aspect, a display module is provided, the display module comprising a first display panel and the backlight module described in the first aspect, the backlight module comprising a middle frame and a fixing member;

[0028] The first display panel is disposed between the support platform and the second fixing portion of the fixing member.

[0029] In a third aspect, a display device is provided, the display device comprising: a second display panel and the display module according to the second aspect;

[0030] The second display panel is disposed on a side of the first display panel away from the backlight module.

[0031] The beneficial effects brought about by the technical solution provided by the embodiment of the present invention include at least:

[0032] The embodiment of the present invention provides a backlight module, a display module and a display device, wherein the backlight module includes a middle frame and a fixing member, wherein the middle frame is a hollow frame body, and a support platform is arranged on the inner side of the middle frame, and the support platform is used to support a first display panel. The fixing member includes a first fixing portion and a second fixing portion connected to each other, wherein the first fixing portion is used to be fixed to the middle frame, and the second fixing portion is arranged opposite to the support platform, and the first display panel is used to be arranged between the support platform and the second fixing portion. By arranging the fixing member in the backlight module, the fixing member can fix the first display panel in the middle frame. Therefore, during transportation, the backlight module can protect the first display panel, prevent the display panel from being scratched, and ensure the display effect of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 is a partial structural schematic diagram of a backlight module provided by an embodiment of the present invention;

[0035] Figure 2 It is a structural schematic diagram of a middle frame provided by an embodiment of the present invention;

[0036] Figure 3 is a schematic structural diagram of a fixing member provided by an embodiment of the present invention;

[0037] Figure 4 is a schematic structural diagram of another middle frame provided by an embodiment of the present invention;

[0038] Figure 5 is a structural schematic diagram of a backlight module provided by an embodiment of the present invention;

[0039] Figure 6 It is a structural schematic diagram of another middle frame provided by an embodiment of the present invention;

[0040] Figure 7 is a schematic structural diagram of another backlight module provided by an embodiment of the present invention;

[0041] Figure 8 is a schematic structural diagram of another fixing member provided by an embodiment of the present invention;

[0042] Fig. 9 is a structural schematic diagram of another fixing member provided by an embodiment of the present invention;

[0043] Fig.10 for Fig. 9 A top view of the fixing member shown;

[0044] Fig.11 is a schematic structural diagram of another middle frame provided by an embodiment of the present invention;

[0045] Fig.12 for Fig. 9 a side view of the fixing member shown;

[0046] Fig.13 is a structural schematic diagram of another backlight module provided by an embodiment of the present invention;

[0047] Fig.14 It is a structural schematic diagram of another middle frame provided by an embodiment of the present invention;

[0048] Fig.15 is a schematic structural diagram of another backlight module provided by an embodiment of the present invention;

[0049] Fig.16 is a structural schematic diagram of another backlight module provided by an embodiment of the present invention;

[0050] Fig.17 It is a structural schematic diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0051] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0052] Figure 1FIG. 1 is a partial structural diagram of a backlight module provided in an embodiment of the present invention. The backlight module can provide a light source for the first display panel 130. Figure 1 As shown, the backlight module may include: a middle frame 110 and a fixing member 120 . Figure 2 is a schematic diagram of a structure of a middle frame provided by an embodiment of the present invention, referring to Figure 2 It can be seen that the middle frame 110 can be a hollow frame, and a support platform 111 is provided inside the middle frame 110, and the support platform 111 can support the first display panel 130. The fixing member 120 can include a first fixing portion 121 and a second fixing portion 122 connected to each other, the first fixing portion 121 can be fixed to the middle frame 110, the second fixing portion 122 is arranged opposite to the support platform 111, and the first display panel 130 can be arranged between the support platform 111 and the second fixing portion 122.

[0053] In summary, an embodiment of the present invention provides a backlight module, which includes a middle frame and a fixing member. The middle frame is a hollow frame, and a support platform is provided on the inner side of the middle frame, and the support platform is used to support a first display panel. The fixing member includes a first fixing portion and a second fixing portion connected to each other, the first fixing portion is used to be fixed to the middle frame, the second fixing portion is arranged opposite to the support platform, and the first display panel is used to be arranged between the support platform and the second fixing portion. By arranging the fixing member in the backlight module, the fixing member can fix the first display panel in the middle frame. Therefore, during transportation, the backlight module can protect the first display panel, prevent the display panel from being scratched, and ensure the display effect of the display device.

[0054] Figure 3 Schematic diagram of the structure of a fixing member provided by an embodiment of the present invention. Figure 1 and Figure 3 As shown, the first fixing portion 121 and the second fixing portion 122 can both be plate-shaped structures, the first fixing portion 121 is perpendicular to the second fixing portion 122, and the second fixing portion 122 is parallel to the support platform 111. The first fixing portion 121 is provided with a through hole 001, and the first fixing portion 121 can be fixed to the middle frame 110 through the through hole 001.

[0055] In an optional implementation of the embodiment of the present invention, Figure 4 As shown, a protruding structure 002 may be provided on the outer side of the middle frame 110, and the protruding direction of the protruding structure 002 is perpendicular to the plate surface of the first fixing portion 121. Figure 5 The protruding structure 002 can be snap-fitted into the through hole 001 ( Figure 5 (not marked in the figure), the first fixing portion 121 can be fixedly connected to the middle frame 110.

[0056] In another optional implementation of the embodiment of the present invention, Figure 6 As shown, the outer side of the middle frame 110 is provided with a threaded hole 003, and the threaded hole 003 on the middle frame 110 corresponds to the through hole 001 on the first fixing portion 121 one by one. Figure 7 As shown, the first fixing portion 121 can be fixed to the middle frame 110 by means of bolts 004 .

[0057] In this implementation, the through hole 001 on the first fixing portion 121 may be a threaded hole, or may be a bare hole without threads, which is not limited in the embodiment of the present invention.

[0058] In the embodiment of the present invention, a plurality of through holes 001 may be provided on the first fixing portion 121 to ensure the connection stability between the first fixing portion 121 and the middle frame 110. Figure 3 As shown, two through holes 011 may be provided on the first fixing portion 121 .

[0059] Figure 8 Schematic diagram of another fixing member provided by an embodiment of the present invention. Figure 8 As shown, the first fixing portion 121 and the second fixing portion 122 may both be plate-shaped structures, the first fixing portion 121 is perpendicular to the second fixing portion 122, and the second fixing portion 122 may be parallel to the support platform 111. The first fixing portion 121 and the middle frame 110 may be bonded and fixed. Optionally, the first fixing portion 121 and the middle frame 110 may be bonded and fixed by tape or glue.

[0060] Fig. 9 is a structural schematic diagram of another fixing member provided by an embodiment of the present invention, Fig.10 for Fig. 9 A top view of the fixing member shown in FIG. Fig. 9 and Fig.10 As shown, the second fixing portion 122 may be a plate-shaped structure parallel to the support platform 111 , and the first fixing portion 121 may be a clamping structure.

[0061] Fig.11 Schematic diagram of another structure of a middle frame provided by an embodiment of the present invention. Fig.11 As shown, a snap-in groove 005 may be provided on the middle frame 110 , and the snap-in structure 121 may be snap-into the snap-in groove 005 , thereby being fixed to the middle frame 110 .

[0062] Optional, see Fig.11 The upper end surface of at least one frame edge of the middle frame 110 is provided with the snap-fit ​​groove 005, and the width a of the top of the snap-fit ​​groove 005 is smaller than the width b of the bottom. Fig.12 for Fig. 9 A side view of the fixing shown. Fig.12As shown, the width c of the top and the width d of the bottom of the clamping structure 121 may both be smaller than the width f of the middle portion. Fig.13 FIG. 1 is a schematic diagram of the structure of another backlight module provided by an embodiment of the present invention. Fig.13 As shown, the snap-fit ​​structure 121 can be snapped into the snap-fit ​​groove 005, and because the width c at the top and the width d at the bottom of the snap-fit ​​structure 121 are both smaller than the width f in the middle, the snap-fit ​​structure 121 can be prevented from detaching from the snap-fit ​​groove 005, thereby ensuring the connection stability between the first fixing portion 121 and the middle frame 110.

[0063] The upper end surface of the middle frame 110 may be a surface in contact with the second fixing portion 122. The top of the clamping slot 005 and the clamping structure 121 are closer to the upper end surface than the bottom. The width direction of the clamping slot 005 is perpendicular to the extension direction of the frame edge where the clamping slot 005 is located, and the width direction of the clamping structure 121 is parallel to the width direction of the clamping slot 005.

[0064] In the embodiment of the present invention, the length direction of the second fixing portion 122 may be parallel to the extension direction of the frame edge where the clamping slot 005 is located. Fig. 9 and Fig.10 The fixing member 120 may include two first fixing portions 121, which are arranged at both ends of the second fixing portion 122, and the connecting direction of the two first fixing portions 121 is parallel to the length direction of the second fixing portion 122. Each first fixing portion 121 may include a first fixing piece 1210 and a second fixing piece 1211 which are arranged opposite to each other, and the shapes of the two fixing pieces may be the same. Fig.12 , the distance between the first fixing plate 1210 and the second fixing plate 1211 first increases and then decreases in the direction away from the second fixing portion 122. Fig. 9 , each fixing sheet can be a bent plate-shaped structure. Optionally, the distance between the bottom end of the first fixing sheet 1210 and the bottom end of the second fixing sheet 1211 can be smaller than the width a of the top of the clamping groove 005, so as to facilitate the clamping structure to be clamped in the clamping groove 005.

[0065] like Fig. 9 As shown, each first fixing portion 121 may also be provided with a through hole 006, and the bent plate structure may be easily processed by providing the through hole 006. Optionally, the first fixing plate 1210 and the second fixing plate 1211 may be an integral structure. The first fixing portion 121 and the second fixing portion 122 may also be an integral structure.

[0066] Fig.14 Schematic diagram of another structure of a middle frame provided by an embodiment of the present invention. Fig.14As shown, the outer side of the middle frame 110 may be provided with a plurality of snap-fit ​​grooves 005, each snap-fit ​​groove 005 may be a groove, and the concave direction of the groove is perpendicular to the plate surface of the first fixing portion 121. The snap-fit ​​structure 121 may be a plurality of protrusion structures corresponding to the plurality of snap-fit ​​grooves 005 on the middle frame 110. Fig.15 As shown, the plurality of protrusion structures can be snapped into the corresponding grooves to be fixed to the middle frame 110 .

[0067] The backlight module provided by the embodiment of the present invention may include a plurality of fixing members 120, and the plurality of fixing members 120 may be disposed around the middle frame 110. By disposing a plurality of fixing members 120 around the middle frame 110, the reliability of fixing the first display panel 130 may be improved.

[0068] Optionally, the fixing member 120 can be made of injection molding material or stainless steel metal material. If the fixing member 120 is made of injection molding material, the thickness of the second fixing portion 122 is greater than 0.5 mm (millimeter). For example, the injection molding material can be a polycarbonate material. If the fixing member 120 is made of stainless steel metal material, the thickness of the second fixing portion can be 0.15 mm. For example, the stainless steel metal material can be SUS301 material. Wherein, the thickness direction of the second fixing portion 122 is perpendicular to the support surface of the support platform 111.

[0069] See also Figure 5 , Figure 7 , 13 and Fig.15 , the backlight module may further include: a back plate 140, a light guide plate 150, an optical film 160 and a light source 170. The light source 170, the light guide plate 150 and the optical film 160 are all arranged on the back plate 140, and are all located on the side of the support platform 111 of the middle frame 110 away from the first display panel 130. Among them, the back plate 140 is located at the bottom of the middle frame 110, the light guide plate 150 is located on the back plate 140, the optical film 160 is located on the side of the light guide plate 150 away from the back plate 140, and is located on the side of the support platform 111 away from the first display panel 130, and the light source 170 is located on the side of the light guide plate 150. Among them, the light source 170 can be a light emitting diode (LED) arranged on the circuit board 171, for example, the light source 170 can be soldered on the circuit board 171 by soldering. The optical film 160 may include at least one of a polarizer, a diffuser and a prism film.

[0070] In the embodiment of the present invention, according to the different positions of the light source 170, the backlight module can be divided into an edge-type backlight module and a direct-type backlight module. Figure 5 As shown, the light source 170 in the edge-type backlight module is arranged on the side of the light guide plate 150. Fig.16 As shown, the light source 170 in the direct-lit backlight module is located at the bottom of the light guide plate 150 , that is, at the side of the light guide plate 150 away from the optical film 160 .

[0071] In summary, an embodiment of the present invention provides a backlight module, which includes a middle frame and a fixing member. The middle frame is a hollow frame, and a support platform is provided on the inner side of the middle frame, and the support platform is used to support a first display panel. The fixing member includes a first fixing portion and a second fixing portion connected to each other, the first fixing portion is used to be fixed to the middle frame, the second fixing portion is arranged opposite to the support platform, and the first display panel is used to be arranged between the support platform and the second fixing portion. By arranging the fixing member in the backlight module, the fixing member can fix the first display panel in the middle frame. Therefore, during transportation, the backlight module can protect the first display panel, prevent the display panel from being scratched, and ensure the display effect of the display device.

[0072] An embodiment of the present invention provides a display module, which may include a first display panel 130 and a backlight module. The backlight module may be Figure 1 , Figure 5 , Figure 7 , Fig.13 , Fig.15 or Fig.16 The backlight module shown. With reference to the above drawings, it can be seen that the backlight module may include a middle frame 110 and a fixing member 120. The middle frame 110 is a hollow frame, and a support platform 111 is provided inside the middle frame 110. The fixing member 120 includes a first fixing portion 121 and a second fixing portion 122 connected to each other. The first display panel 130 is provided between the support platform 111 and the second fixing portion 122 in the fixing member 120.

[0073] Optionally, the first display panel 130 may be bonded to the support platform 111 by a double-sided foam adhesive, or may be bonded to the support platform 111 by a water-based adhesive. The water-based adhesive may be an optically clear resin (OCR) or an optically clear adhesive (OCA).

[0074] The embodiment of the present invention further provides a display device, such as Fig.17As shown, the display device may include: a second display panel 180 and a display module. The second display panel 180 is arranged on a side of the first display panel 130 away from the backlight module. The second display panel 180 and the first display panel 130 may be bonded by a foam double-sided adhesive, or may also be bonded by a water adhesive. The foam double-sided adhesive may be arranged around the side of the first display panel 130 close to the second display panel 180. The display device may be: a liquid crystal panel, an electronic paper, a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, or any other product or component with a display function.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A backlight module, characterized in that: The backlight module is used to provide a light source for the first display panel, and the backlight module includes: a middle frame and a fixing member; The middle frame is a hollow frame, and a support platform is provided inside the middle frame, and the support platform is used to support the first display panel; The fixing member includes a first fixing portion and a second fixing portion connected to each other, the first fixing portion is used to be fixed to the middle frame, the second fixing portion is arranged opposite to the support platform, and the first display panel is used to be arranged between the support platform and the second fixing portion; The second fixing portion is a plate-shaped structure parallel to the support platform, and the first fixing portion is a clamping structure; The middle frame is provided with a clamping groove, and the clamping structure is used to be clamped in the clamping groove; The length direction of the second fixing portion is parallel to the extension direction of the frame edge where the clamping groove is located, the fixing member includes two first fixing portions, the two first fixing portions are arranged at two ends of the second fixing portion, and the connection direction of the two first fixing portions is parallel to the length direction of the second fixing portion; Each of the first fixing parts comprises a first fixing plate and a second fixing plate which are arranged opposite to each other, and both the first fixing plate and the second fixing plate are bent plate-shaped structures; The distance between the first fixing plate and the second fixing plate first increases and then decreases in a direction away from the second fixing portion.

2. The backlight module according to claim 1, characterized in that: The upper end surface of at least one frame edge of the middle frame is provided with the clamping groove, and the width of the top of the clamping groove is smaller than the width of the bottom; The width of the top and the width of the bottom of the clamping structure are both smaller than the width of the middle part; Among them, the upper end surface of the middle frame is the surface in contact with the second fixing portion, the top is close to the upper end surface relative to the bottom, the width direction of the snap-in groove is perpendicular to the extension direction of the frame edge where the snap-in groove is located, and the width direction of the snap-in structure is parallel to the width direction of the snap-in groove.

3. The backlight module according to claim 1 or 2, characterized in that: The backlight module comprises: a plurality of fixing members, and the plurality of fixing members are arranged on the middle frame in a surrounding manner.

4. The backlight module according to claim 1 or 2, characterized in that: The fixing piece is made of injection molding material or stainless steel metal material.

5. The backlight module according to claim 1 or 2, characterized in that: The backlight module also includes: a back plate, a light guide plate, an optical film and a light source; The light source, the light guide plate and the optical film are all arranged on the back plate, and are all located on a side of the support platform of the middle frame away from the first display panel.

6. A display module, characterized in that: The display module comprises a first display panel and a backlight module according to any one of claims 1 to 5, wherein the backlight module comprises a middle frame and a fixing member; The first display panel is disposed between the support platform and the second fixing portion of the fixing member.

7. A display device, characterized in that: The display device comprises: a second display panel and the display module according to claim 6; The second display panel is disposed on a side of the first display panel away from the backlight module.

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