CN115390314B - Backlight module, display module and display device - Google Patents
Backlight module, display module and display device Download PDFInfo
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- CN115390314B CN115390314B CN202211127879.7A CN202211127879A CN115390314B CN 115390314 B CN115390314 B CN 115390314B CN 202211127879 A CN202211127879 A CN 202211127879A CN 115390314 B CN115390314 B CN 115390314B
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- 238000004519 manufacturing process Methods 0.000 abstract description 24
- 239000012528 membrane Substances 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 5
- 239000000725 suspension Substances 0.000 abstract description 4
- 239000002390 adhesive tape Substances 0.000 description 12
- 230000017525 heat dissipation Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 238000009792 diffusion process Methods 0.000 description 6
- 239000003292 glue Substances 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002096 quantum dot Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133608—Direct backlight including particular frames or supporting means
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133314—Back frames
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The embodiment of the application provides a backlight module, a display module and a display device. The backlight module comprises a back plate, an insulating support plate, a light source plate and a film plate; the insulating support plate comprises a support plate and a boss, the support plate is arranged on the back plate, and a plurality of first through holes are formed in the support plate; at least two bosses are convexly arranged on two opposite sides of the carrier plate in the direction away from the backboard; the light source plate is arranged on the carrier plate, one side of the light source plate, which is close to the back plate, is provided with a plurality of electrical components, and one electrical component is accommodated in one first through hole; the membrane material board is erected on the two bosses and is used for adjusting light rays emitted by the light emitting devices on the light source board. According to the embodiment of the application, the insulating support plate is arranged, so that the structure of the back plate can be simplified, the processing difficulty and cost of the back plate can be reduced, and the production efficiency of the backlight module can be improved. In addition, the risk of contact short circuit caused by direct contact between the light source plate and the backboard can be reduced, and deformation failure of the light source plate due to suspension arrangement is avoided.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a backlight module, a display module, and a display device.
Background
Submillimeter light Emitting Diodes (MINI LIGHT-emission Diodes, mini LEDs for short), which can provide better color contrast, have low power consumption, facilitate to realize ultra-thin design, are increasingly used in the display field.
In the related art, the Mini LED backlight module comprises a back plate and a Mini LED lamp panel, and electrical elements on the Mini LED lamp panel are usually welded on the back surface of the lamp panel, so that although the cost of the Mini LED lamp panel can be reduced, the competitiveness of the Mini LED display module is improved, but the structure of the back plate is required to be provided with higher requirements, for example, a plurality of avoidance holes are required to be formed in the back plate, or the lamp panel is in suspension lap joint with the back plate, the processing difficulty and the cost of the back plate are greatly increased, and the production efficiency is reduced.
Disclosure of Invention
The embodiment of the application aims to provide a backlight module, a display module and a display device, so as to reduce the processing difficulty and cost of the backlight module and improve the production efficiency. The specific technical scheme is as follows:
An embodiment of a first aspect of the present application provides a backlight module, including a back plate, an insulating support plate, a light source plate and a film plate; the insulation supporting plate comprises a supporting plate and a boss, the supporting plate is arranged on the backboard, and a plurality of first through holes are formed in the supporting plate; at least two bosses are convexly arranged on two opposite sides of the carrier plate in the direction away from the backboard; the light source plate is arranged on the carrier plate, one side of the light source plate, which is close to the back plate, is provided with a plurality of electrical elements, and one electrical element is accommodated in one first through hole; the membrane plate is arranged on the boss and is used for adjusting light rays emitted by the light emitting devices on the light source plate.
According to the embodiment of the application, the backlight module comprises a back plate, an insulating support plate, a light source plate and a film plate, wherein the insulating support plate comprises a support plate and bosses, the support plate is arranged on the back plate, a plurality of first through holes are formed in the support plate, a plurality of electric elements are arranged on one side, close to the back plate, of the light source plate, one electric element is accommodated in one first through hole, two bosses are arranged on two sides of the support plate in a protruding mode, and the film plate is arranged on all the bosses. So set up, need not to offer on the backplate and dodge the hole that corresponds with electrical components, the backplate need not to support the membrane material board, simplifies the backplate structure, reduces the processing degree of difficulty and the cost of backplate, improves production efficiency. In addition, the light source board sets up on the support plate, and the support plate sets up on the backplate, and electrical components acceptd in the first through-hole of support plate, reduces the contact short circuit risk that light source board and backplate direct contact brought, simultaneously, can avoid light source board to take place to warp inefficacy owing to unsettled setting, improves backlight unit's quality. In addition, the height of the boss is adjusted to adjust the light mixing distance, so that the light rays emitted by the light emitting devices on the light source plate can be conveniently adjusted by the film plate, and the light emitting effect of the backlight module is improved.
In addition, the backlight module according to the embodiment of the application can also have the following technical characteristics:
In some embodiments of the present application, the back plate includes a bottom plate and a side plate, the side plate surrounds the periphery of the bottom plate and is connected to an edge of the bottom plate, the carrier plate is disposed on the bottom plate, a first gap exists between the side plate and an outer wall of the boss, a second gap exists between the light source plate and an inner wall of the boss, and a first relative height of the side plate is greater than a second relative height of the film plate, and the first relative height and the second relative height refer to a distance from an upper surface of the side plate to the bottom plate and a distance from an upper surface of the film plate to the bottom plate, respectively.
In some embodiments of the application, the membrane sheet comprises a body portion and a protrusion portion; opposite ends of the main body part are lapped on all the bosses of the insulating supporting plate; the protruding part comprises at least two lugs, each lug is connected with the edge of the main body part in a dispersing way, and each lug extends in a direction away from the main body part; the side plates are provided with first notches at positions corresponding to the lugs, and the lugs extend into and are fixed in the corresponding first notches.
In some embodiments of the application, the protruding portion comprises three lugs, wherein two lugs and one lug are distributed at two opposite ends of the main body portion, and two lugs distributed on the same side are distributed at intervals on the main body portion.
In some embodiments of the present application, a connector is further disposed on a side of the light source board, which is close to the back board, and the connector is electrically connected to the electrical component and the light emitting device; the carrier plate is provided with a second through hole for accommodating the connector; and a third through hole corresponding to the second through hole is formed in the bottom plate.
In some embodiments of the present application, the carrier plate is fixed on the bottom plate by a plurality of double-sided adhesive tapes, the plurality of double-sided adhesive tapes extend along a first direction between the carrier plate and the bottom plate and are spaced apart along a second direction, and the first direction intersects the second direction.
In some embodiments of the present application, a heat dissipation layer is disposed between the carrier plate and the bottom plate, and the heat dissipation layer is distributed between every two adjacent double-sided adhesive tapes.
In some embodiments of the present application, the backlight module further includes a driving circuit board and a flexible circuit board; the driving circuit board is arranged on one side of the backboard far away from the light source board; one end of the flexible circuit board passes through the third through hole and the second through hole to be connected with the connector, and the other end of the flexible circuit board is connected with the driving circuit board.
In some embodiments of the present application, the film sheet includes a diffusion plate, a quantum dot film, a diffusion sheet, and a brightness enhancement film sequentially disposed in a direction away from the back plate.
In some embodiments of the application, the thickness of the carrier plate is 1.5 mm-2.0 mm, and the thickness of the boss is 1.5 mm-2.5 mm.
In some embodiments of the present application, a first gap of 0.1mm to 0.5mm exists between the side plate and the outer wall of the boss, and a second gap of 0.1mm to 0.15mm exists between the light source plate and the inner wall of the boss.
An embodiment of a second aspect of the present application provides a display module, where the display module includes a glue frame and a backlight module according to the embodiment of the first aspect, the glue frame includes a first frame and a second frame, the second frame is disposed at an edge of the first frame and extends along a direction perpendicular to the first frame, an accommodating space is defined between the second frame and the first frame, and the backlight module is disposed in the accommodating space.
According to the display module, the display module comprises a glue frame and a backlight module, wherein the glue frame comprises a first frame body and a second frame body, an accommodating space is formed between the first frame body and the second frame body, and the backlight module is arranged in the accommodating space. The insulating backup pad of backlight unit includes carrier plate and boss, and the carrier plate sets up on the backplate, has seted up a plurality of first through-holes on the carrier plate, and one side that the light source board is close to the backplate sets up a plurality of electrical components, and an electrical component is acceptd in a first through-hole, and two boss protrusion settings are in the both sides of carrier plate, and the membrane material grillage is established on all the boss. So set up, need not to offer on the backplate and dodge the hole that corresponds with electrical component, the backplate need not to support the membrane material board, simplifies the backplate structure, reduces the processing degree of difficulty and the cost of backplate, improves production efficiency, and then reduces display module assembly's manufacturing cost, improves display module assembly's production efficiency. In addition, the light source board sets up on the support plate, and the support plate sets up on the backplate, and electrical components acceptd in the first through-hole of support plate, reduces the contact short circuit risk that light source board and backplate direct contact brought, simultaneously, can avoid light source board to take place to warp inefficacy owing to unsettled setting, improves backlight unit's quality, and then improves display module assembly's quality. In addition, the height of the boss is adjusted to adjust the light mixing distance, so that the light rays emitted by the light emitting devices on the light source plate can be conveniently adjusted by the film plate, the light emitting effect of the backlight module is improved, and the display quality of the display module is further improved. In summary, the display module of the embodiment of the application can reduce the production cost of the whole display module, improve the production efficiency and improve the quality of the display module by adopting the backlight module comprising the insulating support plate.
In some embodiments of the present application, the display module further includes a display assembly, the display assembly including a display area; the first frame body is located below the display assembly and surrounds the display area of the display assembly, a step used for supporting the display assembly is formed on one side, close to the display assembly, of the first frame body, a third gap is formed between the display assembly and the side wall of the step, and a fourth gap is formed between the backlight module and the second frame body.
In some embodiments of the present application, the display assembly includes a first polarizer, a display panel, and a second polarizer sequentially disposed along a direction away from the back plate, and orthographic projections of the first polarizer and the second polarizer on the back plate are both located in orthographic projections of the display panel on the back plate.
In some embodiments of the application, the display module further includes a fixing member, one end of the fixing member is fixed to a side of the display panel, which is close to the second polarizer, and the other end of the fixing member is fixed to the back plate.
In some embodiments of the present application, a third gap is between the display assembly and the side wall of the step and is 0.25mm to 0.35mm, and a fourth gap is between the backlight module and the second frame and is 0.1mm to 0.5mm.
An embodiment of a third aspect of the present application provides a display device, including the display module of the embodiment of the second aspect.
According to the display device provided by the embodiment of the application, the display module comprises the backlight module in the embodiment of the first aspect, so that the production cost of the whole display module can be reduced, the production efficiency can be improved, the quality of the display module can be improved, the production cost of the display device can be further reduced, the production efficiency can be improved, and the quality of the display device can be improved.
Of course, it is not necessary for any one product to practice the application to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the application, and other embodiments may be obtained according to these drawings to those skilled in the art.
Fig. 1 is a top view of a backlight module according to an embodiment of the application;
FIG. 2 is a cross-sectional view of A-A of FIG. 1;
FIG. 3 is a top view of a membrane sheet according to an embodiment of the application;
FIG. 4 is a schematic view of a back plate, a double-sided tape and a heat dissipation layer according to an embodiment of the present application;
Fig. 5 is a schematic structural diagram of a first view angle of a display module according to an embodiment of the application;
FIG. 6 is a schematic diagram of a second view angle of the display module according to the embodiment of the application;
fig. 7 is a schematic structural diagram of a third view angle of the display module according to an embodiment of the application.
Reference numerals illustrate:
10-a display module;
100, a rubber frame; 200-a display assembly; 300-fixing piece; 400-a backlight module; 500—a drive circuit board;
600—a flexible circuit board; 700—double sided tape; 800—a heat dissipation layer;
110-a first frame; 120-a second frame; 130-steps;
200 a-a display area; 210-a first polarizer; 220-a display panel; 230-a second polarizer;
221-an array substrate; 222-color film substrate;
410-a back plate; 420-an insulating support plate; 430—a light source plate; 440-a membrane plate;
411—a bottom plate; 412-side plates; 413-a third through hole; 414-a first notch; 415-a second notch;
421—a carrier plate; 422-boss; 423-a first through hole; 424-a second via;
431-electrical components; 432-a light emitting device; 433-a connector;
440 a-a body portion; 440 b-lugs; 441—a diffusion plate; 442—quantum dot film; 443-diffusion sheet; 444-brightness enhancement film.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. Based on the embodiments of the present application, all other embodiments obtained by the person skilled in the art based on the present application are included in the scope of protection of the present application.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For ease of description, spatially relative terms, such as "inner," "outer," "lower," "below," "upper," "above," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Accordingly, the example term "below … …" may include both upper and lower orientations. The device may be otherwise oriented, such as rotated 90 degrees or in other directions, and the spatial relative relationship descriptors used herein interpreted accordingly.
It is noted that in the drawings, the size of layers and regions may be exaggerated for clarity of illustration. Moreover, it will be understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element or intervening layers may be present. In addition, it will be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element or intervening layers or elements may be present. In addition, it will be understood that when a layer or element is referred to as being "between" two layers or elements, it can be the only layer between the two layers or elements, or more than one intervening layer or element may also be present. Like reference numerals refer to like elements throughout.
As shown in fig. 1,2 and 5, an embodiment of the first aspect of the present application provides a backlight module 400, which includes a back plate 410, an insulating support plate 420, a light source plate 430 and a film plate 440 sequentially disposed along a direction away from the back plate 410. Specifically, the insulating support plate 420 includes a support plate 421 and at least two bosses 422, the support plate 421 is disposed on the back plate 410, and the support plate 421 is provided with a plurality of first through holes 423; at least two bosses 422 are arranged on two opposite sides of the carrier 421 in a protruding manner in a direction away from the back plate 410; the light source plate 430 is disposed on the carrier plate 421, a plurality of electrical components 431 are disposed on a side of the light source plate 430 near the back plate 410, and one electrical component 431 is accommodated in one first through hole 423; the film plate 440 is mounted on all the bosses 422, and the film plate 440 is used for adjusting the light emitted by the light emitting devices 432 on the light source plate 430.
According to the backlight module 400 of the embodiment of the application, the backlight module comprises a back plate 410, an insulating support plate 420, a light source plate 430 and a film plate 440, wherein the insulating support plate 420 comprises a carrier plate 421 and a boss 422, the carrier plate 421 is arranged on the back plate 410, a plurality of first through holes 423 are formed in the carrier plate 421, a plurality of electrical elements 431 are arranged on one side, close to the back plate 410, of the light source plate 430, one electrical element 431 is accommodated in one first through hole 423, and the film plate 440 is erected on all bosses 422. By the arrangement, avoiding holes corresponding to the electrical elements 431 are not required to be formed in the backboard 410, the backboard 410 does not need to support the film plate 440, the backboard 410 structure is simplified, the processing difficulty and cost of the backboard 410 are reduced, and the production efficiency is improved. In addition, the light source plate 430 is disposed on the carrier plate 421, the carrier plate 421 is disposed on the back plate 410, the electrical components 431 are accommodated in the first through holes 423 of the carrier plate 421, so as to reduce the risk of contact short circuit caused by direct contact between the light source plate and the back plate 410, and meanwhile, avoid deformation failure of the light source plate 430 due to suspension, and improve the quality of the backlight module 400. In addition, the height of the boss 422 can be adjusted to adjust the light mixing distance, so that the film plate 440 can adjust the light emitted by the light emitting devices 432 on the light source plate 430, and the light emitting effect of the backlight module 400 is improved.
Further, the light source plate 430 may be a Mini LED lamp plate, the light emitting device 432 is a Mini LED lamp, and the light emitting device 432 is disposed on a side of the light source plate 430 away from the back plate 410.
Further, the insulating support plate 420 may be a rubber plate, which has good insulation property, so that the risk of short circuit of the backlight module 400 can be further reduced; the plastic plate can be a PC (polycarbonate) injection molding piece, the back plate 410 is a metal plate, and the plastic plate can be fixed on the back plate 410 in an adhesive or glue iron integrated mode, so that the processing difficulty of the whole backlight module 400 can be reduced, and the weight of the backlight module 400 can be reduced. The light source plate 430 may be fixed on the carrier 421 by the double-sided tape 700, so as to facilitate fixing the light source plate 430.
In some embodiments of the present application, as shown in fig. 2 and 7, the back plate 410 includes a bottom plate 411 and a side plate 412, the side plate 412 surrounds the periphery of the bottom plate 411 and is connected to the edge of the bottom plate 411, the carrier plate 421 is disposed on the bottom plate 411, a first gap a exists between the side plate 412 and the outer wall of the boss 422, a second gap b exists between the light source plate 430 and the inner wall of the boss 422, the first relative height of the side plate 412 is greater than the second relative height of the film plate 440, and the first relative height and the second relative height refer to the distance from the upper surface of the side plate 412 to the bottom plate 411 and the distance from the upper surface of the film plate 440 to the bottom plate 411, respectively. A first gap a exists between the side plate 412 and the outer wall of the boss 422, and a second gap b exists between the light source plate 430 and the inner wall of the boss 422, so that the installation is facilitated, and meanwhile, the expansion allowance is reserved. The first relative height of the side plate 412 is greater than the second relative height of the film plate 440, so that the film plate 440 is prevented from adhering to the liquid crystal display panel.
Further, the bottom plate 411 and the side plate 412 may be integrally formed. Specifically, the bottom plate 411 and the side plate 412 may be integrally manufactured by press molding. Because the back plate 410 does not need to be provided with the avoidance holes, the film plate 440 is arranged on all bosses 422 of the insulating support plate 420, the thickness of the back plate 410 is greatly reduced, the structure of the back plate 410 is simplified, the back plate 410 can be formed by directly stamping and forming a thin plate, the processing difficulty and cost of the back plate 410 are greatly reduced, and the production efficiency of the backlight module 400 is improved.
In some embodiments of the present application, as shown in fig. 1 and 3, the membrane plate 440 includes a main body portion 440a and a protruding portion. Opposite ends of the main body 440a are mounted on all bosses 422 of the insulating support plate 420; the protruding portion includes at least two lugs 440b, each lug 440b is dispersedly connected to an edge of the main body portion 440a, and each lug 440b extends in a direction away from the main body portion 440 a; the side plate 412 is provided with a first notch 414 at a position corresponding to each lug 440b, and the lug 440b extends into and is fixed in the corresponding first notch 414.
The lug 440b is connected with the main body 440a, and the lug 440b extends into and is fixed in the corresponding first notch 414, so that the film plate 440 is fixed on the insulating support plate 420, the structural stability of the backlight module 400 is improved, and the light emitting effect of the backlight module 400 is improved.
In some embodiments, the lugs 440b extend into the first indentations 414 and are secured within the first indentations 414 by double-sided tape.
In other embodiments, as shown in fig. 1 and 4, the main body 440a may be fixed on the side plate 412 by an adhesive tape, the side plate 412 is provided with a second notch 415 through which the adhesive tape passes, one end of the adhesive tape is fixed on the main body 440a, and the other end of the adhesive tape is fixed on the side plate 412. The adhesive tape fixes the main body 440a and the side plate 412 together, and limits the film plate 440 in a direction perpendicular to the bottom plate 411.
In some embodiments of the present application, as shown in fig. 1 and 3, the protruding portion includes three lugs 440b, wherein two lugs 440b are disposed at opposite ends of the main body portion 440a from one lug 440b, and two lugs 440b disposed at the same side are spaced apart on the main body portion 440 a. The lug 440b cooperates with the side plate 412 to limit the membrane plate 440, so that the limiting reliability can be further improved by arranging the lug 440 b.
In other embodiments of the application, the number of lugs 440b may be four or more.
In some embodiments of the present application, as shown in fig. 2, a connector 433 is further disposed on a side of the light source board 430 near the back plate 410, the connector 433 is electrically connected to the electrical element 431 and the light emitting device 432, and the carrier board 421 is provided with a second through hole 424 for accommodating the connector 433; the bottom plate 411 is provided with a third through hole 413 corresponding to the second through hole 424. The external circuit board is connected to the connector 433, and the connector 433 is connected to the electric element 431 and the light emitting device 432, thereby achieving lighting of the light emitting device 432.
In some embodiments of the present application, as shown in fig. 4, the carrier 421 is fixed on the bottom plate 411 by a plurality of double-sided adhesive tapes 700, and the plurality of double-sided adhesive tapes 700 extend between the carrier 421 and the bottom plate 411 along a first direction and are spaced apart along a second direction, and the first direction intersects the second direction. The double-sided tape 700 realizes fixation of the carrier 421 and the back plate 410.
In some embodiments of the present application, as shown in fig. 4, a heat dissipation layer 800 is disposed between the carrier plate 421 and the bottom plate 411, and the heat dissipation layer 800 is distributed between every two adjacent double-sided adhesive tapes 700. A heat dissipation layer 800 is disposed between the adjacent double-sided adhesive tapes 700, and the heat dissipation layer 800 may be a heat dissipation adhesive, so that heat dissipation of the light source plate 430 is realized while the carrier 421 and the back plate 410 are fixed.
In some embodiments of the present application, as shown in fig. 2 and 6, the backlight module 400 further includes a driving circuit board 500 and a flexible circuit board 600 (Flexible Printed Circuit, FPC), the driving circuit board 500 is disposed on a side of the back plate 410 away from the light source plate 430, one end of the flexible circuit board 600 is connected to the connector 433 through the third through hole 413 and the second through hole 424, and the other end of the flexible circuit board 600 is connected to the driving circuit board 500. Specifically, the driving circuit board may be fixed on a side of the back plate 410 away from the light source plate 430 by the double-sided tape 700. The driving circuit board 500 is connected with the connector 433 through the flexible circuit board 600, so that the light source board can be conveniently lighted.
In some embodiments of the present application, as shown in fig. 5 and 6, the film plate 440 includes a diffusion plate 441, a quantum dot film 442, a diffusion sheet 443, and a light enhancement film 444 sequentially disposed in a direction away from the back plate 410.
In some embodiments of the present application, the thickness of the carrier 421 is 1.5mm to 2.0mm and the thickness of the boss 422 is 1.5mm to 2.5mm. The size parameters of the carrier 421 and the boss 422 satisfy the above numerical ranges, so that the corresponding functions of the carrier 421 and the boss 422 can be better realized, and the volume and the weight of the backlight module 400 can be controlled.
In some embodiments of the present application, a first gap a is 0.1mm to 0.5mm between the side plate 412 and the outer wall of the boss 422, and a second gap b is 0.1mm to 0.15mm between the light source plate 430 and the inner wall of the boss 422. The first gap a and the second gap b are controlled in the numerical range, so that the purposes of convenient installation and reserved expansion space can be realized, and the volume of the backlight module 400 can be controlled.
As shown in fig. 5 and 6, an embodiment of a second aspect of the present application provides a display module 10, including a plastic frame 100 and a backlight module 400 in the above-mentioned embodiment of the first aspect, where the plastic frame 100 includes a first frame 110 and a second frame 120, the second frame 120 is disposed at an edge of the first frame 110 and extends along a direction perpendicular to the first frame 110, an accommodating space is defined between the second frame 120 and the first frame 110, and the backlight module 400 is disposed in the accommodating space.
According to the display module 10 of the embodiment of the application, the display module comprises a plastic frame 100 and a backlight module 400, wherein the plastic frame 100 comprises a first frame body 110 and a second frame body 120, an accommodating space is formed between the first frame body 110 and the second frame body 120, and the backlight module 400 is arranged in the accommodating space. The insulating support plate 420 of the backlight module 400 comprises a support plate 421 and a boss 422, the support plate 421 is arranged on the back plate 410, a plurality of first through holes 423 are formed in the support plate 421, a plurality of electrical components 431 are arranged on one side, close to the back plate 410, of the light source plate 430, one electrical component 431 is contained in one first through hole 423, and the film plate 440 is erected on all the bosses 422. So set up, need not to set up on backplate 410 and dodge the hole with electrical component 431 corresponds, backplate 410 need not to support membrane material board 440, simplifies backplate 410 structure, reduces the processing degree of difficulty and the cost of backplate 410, improves production efficiency, and then reduces the manufacturing cost of display module assembly 10, improves the production efficiency of display module assembly 10. In addition, the light source plate 430 is disposed on the carrier plate 421, the carrier plate 421 is disposed on the back plate 410, the electrical components 431 are accommodated in the first through holes 423 of the carrier plate 421, so as to reduce the risk of contact short circuit caused by direct contact between the light source plate 430 and the back plate 410, and at the same time, avoid deformation failure of the light source plate 430 due to suspension, improve the quality of the backlight module 400, and further improve the quality of the display module 10. In addition, the height of the boss 422 can be adjusted to adjust the light mixing distance, so that the film plate 440 can adjust the light emitted by the light emitting device 432 on the light source plate 430, thereby improving the light emitting effect of the backlight module 400 and further improving the display quality of the display module 10. As can be seen from the above, the display module 10 according to the embodiment of the application can reduce the production cost of the entire display module 10, improve the production efficiency and improve the quality of the display module 10 by adopting the backlight module 400 including the insulating support plate 420.
In some embodiments of the present application, as shown in fig. 5 to 7, the display module 10 further includes a display assembly 200, the display assembly 200 includes a display area 200a, the first frame 110 is located below the display assembly 200 and disposed around the display area 200a of the display assembly 200, a step 130 for supporting the display assembly 200 is formed on a side of the first frame 110 near the display assembly 200, a third gap c is between the display assembly 200 and a sidewall of the step 130, and a fourth gap d is between the backlight module 400 and the second frame 120. The step 130 on the first frame 110 has a supporting function on the display assembly 200, a third gap c exists between the display assembly 200 and the side wall of the step 130, and a fourth gap d exists between the backlight module 400 and the second frame 120, so that the installation is convenient.
In some embodiments of the present application, as shown in fig. 5 and 6, the display assembly 200 includes a first polarizer 210, a display panel 220, and a second polarizer 230 sequentially disposed along a direction away from the back plate 410, and the front projections of the first polarizer 210 and the second polarizer 230 on the back plate 410 are located in the front projection of the display panel 220 on the back plate 410. By the above arrangement, the edges of the first polarizer 210 and the second polarizer 230 can be ensured not to exceed the edge of the display panel 220, which is beneficial to the assembly among the first polarizer 210, the display panel 220 and the second polarizer 230.
In some embodiments, the display panel 220 may be a liquid crystal display panel, which includes an array substrate 221 and a color film substrate 222.
In some embodiments of the present application, as shown in fig. 5 and 6, the display module 10 further includes a fixing member 300, one end of the fixing member 300 is fixed to a side of the display panel 220 near the second polarizer 230, and the other end of the fixing member 300 is fixed to the back plate 410. The fixing member 300 fixes the display assembly 200 to the back plate 410. Specifically, the fixing member 300 may be a light shielding tape.
In some embodiments of the present application, the third gap c between the display assembly 200 and the sidewall of the step 130 is 0.25mm to 0.35mm, and the fourth gap d between the backlight module 400 and the second frame 120 is 0.1mm to 0.5mm. The second gaps b and c are controlled in the above numerical range, so that the purpose of convenient installation and reservation of the expansion space can be achieved, and the volume and weight of the display assembly 200 can be controlled.
An embodiment of the third aspect of the present application provides a display device, including the glue frame 100 and the display module 10 in the embodiment of the second aspect.
According to the display device of the embodiment of the application, the display module 10 comprises the backlight module 400, so that the production cost of the whole display module 10 can be reduced, the production efficiency can be improved, the quality of the display module 10 can be improved, the production cost of the display device can be reduced, the production efficiency can be improved, and the quality of the display device can be improved.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In this specification, each embodiment is described in a related manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, as relevant to see a section of the description of method embodiments.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.
Claims (16)
1. A backlight module, comprising:
a back plate;
The insulation support plate comprises a support plate and a boss, the support plate is arranged on the back plate, and a plurality of first through holes are formed in the support plate; at least two bosses are convexly arranged on two opposite sides of the carrier plate in the direction away from the backboard;
The light source plate is arranged on the carrier plate, one side of the light source plate, which is close to the back plate, is provided with a plurality of electrical components, and one electrical component is accommodated in one first through hole;
The film material plate is arranged on all the bosses and is used for adjusting the light rays emitted by the light emitting devices on the light source plate;
The backboard comprises a bottom plate and side plates, the side plates surround the periphery of the bottom plate and are connected with the edges of the bottom plate, the carrier plate is arranged on the bottom plate, and a first gap exists between the side plates and the outer wall of the boss;
the membrane material plate comprises: a main body portion and a protruding portion;
Opposite ends of the main body part are lapped on all the bosses of the insulating supporting plate;
the protruding part comprises at least two lugs, each lug is connected with the edge of the main body part in a dispersing way, and each lug extends in a direction away from the main body part;
A first notch is formed in the position, corresponding to each lug, of the side plate, and each lug extends into and is fixed in the corresponding first notch;
the lug is fixed in the first notch through a double-sided adhesive tape;
the main body part is fixed on the side plate through an adhesive tape, a second notch for the adhesive tape to pass through is formed in the side plate, one end of the adhesive tape is fixed on the main body part, and the other end of the adhesive tape is fixed on the side plate.
2. A backlight module according to claim 1, wherein,
The light source plate and the inner wall of the boss are provided with a second gap, the first relative height of the side plate is larger than the second relative height of the membrane plate, and the first relative height and the second relative height refer to the distance from the upper surface of the side plate to the bottom plate and the distance from the upper surface of the membrane plate to the bottom plate respectively.
3. A backlight module according to claim 1, wherein the protruding portion comprises three lugs, two of the lugs and one of the lugs are disposed at opposite ends of the main body portion, and two lugs disposed on the same side are disposed at intervals on the main body portion.
4. A backlight module according to claim 2, wherein,
A connector is further arranged on one side, close to the back plate, of the light source plate, and the connector is electrically connected with the electrical element and the light-emitting device;
the carrier plate is provided with a second through hole for accommodating the connector; and a third through hole corresponding to the second through hole is formed in the bottom plate.
5. A backlight module according to any one of claims 2 to 4, wherein the carrier is fixed to the base plate by a plurality of double-sided tapes, the plurality of double-sided tapes extending between the carrier and the base plate along a first direction and being spaced apart along a second direction, the first direction intersecting the second direction.
6. A backlight module according to claim 5, wherein,
And a heat dissipation layer is arranged between the carrier plate and the bottom plate and is distributed between every two adjacent double-sided adhesive tapes.
7. A backlight module according to claim 4, further comprising:
The driving circuit board is arranged on one side of the backboard, which is far away from the light source board;
And one end of the flexible circuit board penetrates through the third through hole and the second through hole to be connected with the connector, and the other end of the flexible circuit board is connected with the driving circuit board.
8. A backlight module according to claim 1, wherein,
The film material plate comprises a diffusion plate, a quantum dot film, a diffusion sheet and a brightness enhancement film which are sequentially arranged along the direction far away from the back plate.
9. A backlight module according to claim 1, wherein,
The thickness of the carrier plate is 1.5-2.0 mm, and the thickness of the boss is 1.5-2.5 mm.
10. A backlight module according to claim 2, wherein,
A first gap of 0.1-0.5 mm is formed between the side plate and the outer wall of the boss, and a second gap of 0.1-0.15 mm is formed between the light source plate and the inner wall of the boss.
11. A display module, characterized by comprising a plastic frame and the backlight module according to any one of claims 1 to 10,
The plastic frame comprises a first frame body and a second frame body, the second frame body is arranged at the edge of the first frame body and extends along the direction perpendicular to the first frame body, an accommodating space is defined between the second frame body and the first frame body, and the backlight module is arranged in the accommodating space.
12. The display module of claim 11, wherein the display module further comprises:
a display assembly including a display area;
The first frame body is located below the display assembly and surrounds the display area of the display assembly, a step used for supporting the display assembly is formed on one side, close to the display assembly, of the first frame body, a third gap is formed between the display assembly and the side wall of the step, and a fourth gap is formed between the backlight module and the second frame body.
13. The display module assembly of claim 12, wherein the display module assembly comprises,
The display assembly comprises a first polaroid, a display panel and a second polaroid which are sequentially arranged along the direction deviating from the backboard, and the orthographic projection of the first polaroid and the second polaroid on the backboard is located in the orthographic projection of the display panel on the backboard.
14. The display module assembly of claim 13, wherein the display module assembly comprises,
The display module further comprises a fixing piece, one end of the fixing piece is fixed to one side, close to the second polaroid, of the display panel, and the other end of the fixing piece is fixed to the backboard.
15. The display module assembly of claim 12, wherein the display module assembly comprises,
And a third gap of 0.25-0.35 mm exists between the display assembly and the side wall of the step, and a fourth gap of 0.1-0.5 mm exists between the backlight module and the second frame.
16. A display device comprising a display module according to any one of claims 11-15.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211127879.7A CN115390314B (en) | 2022-09-16 | 2022-09-16 | Backlight module, display module and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211127879.7A CN115390314B (en) | 2022-09-16 | 2022-09-16 | Backlight module, display module and display device |
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| CN115390314A (en) | 2022-11-25 |
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