CN114545681A - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
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- CN114545681A CN114545681A CN202111661478.5A CN202111661478A CN114545681A CN 114545681 A CN114545681 A CN 114545681A CN 202111661478 A CN202111661478 A CN 202111661478A CN 114545681 A CN114545681 A CN 114545681A
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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
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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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133325—Assembling processes
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- 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 application discloses a backlight module and a display device, which comprise a back plate, a lamp panel and an optical diaphragm, wherein the lamp panel is installed on the back plate, the optical diaphragm is arranged on one side, away from the back plate, of the lamp panel, the lamp panel comprises a plurality of spliced lamp panels, splicing seams exist among the spliced lamp panels, the backlight module further comprises a limiting part, a first limiting part is arranged on the spliced lamp panels, and a second limiting part is arranged on the back plate; locating part one end pass the backplate with first spacing portion on the concatenation lamp plate is connected, the other end of locating part with spacing portion of second on the backplate is connected, so that will the backplate with the concatenation lamp plate is fixed, need not use the location line to fix a position, and the locating part plays location and spacing effect to the concatenation lamp plate, has reduced the probability that positional deviation appears when the installation of concatenation lamp plate, has reduced the required technical requirement of installation concatenation lamp plate simultaneously, makes things convenient for the installation of concatenation lamp plate.
Description
Technical Field
The application relates to the technical field of liquid crystal display, in particular to a backlight module and a display device.
Background
At present, a common Mini-LED module in the market generally comprises a back plate, a rubber frame, a lamp panel and other optical film materials, wherein the lamp panel is divided into a direct type and a side type, and the Mini-LED module generally adopts the direct type lamp panel to provide a light source;
firstly, the problem of difficult assembly is solved, and aiming at the Mini-LED module with medium and large size, the lamp panel is usually a plurality of spliced lamp panels, and the positioning of a positioning line is complex and is not beneficial to the production line operation; secondly, the positioning action when the location line on the backplate is only used for the lamp plate equipment, but can not carry on spacingly with the lamp plate, positional deviation still probably appears in the installation of concatenation lamp plate, and leads to backlight unit optical display bad, to sum up, when using double faced adhesive tape installation concatenation lamp plate, can have the big problem of equipment error, influence backlight unit's demonstration is bad.
Disclosure of Invention
The utility model aims at providing a backlight unit and display device, through setting up first limit structure and second limit structure, will splice the lamp plate and fix on the backplate, and also reciprocal anchorage between two adjacent concatenation lamp plates, avoid the concatenation lamp plate to appear the big problem of equipment error and influence backlight unit's bad demonstration when the installation.
The application discloses a backlight module, which comprises a back plate, a lamp plate and an optical diaphragm, wherein the lamp plate is installed on the back plate, the optical diaphragm is arranged on one side, away from the back plate, of the lamp plate, the lamp plate comprises a plurality of spliced lamp plates, splicing seams exist among the spliced lamp plates, the backlight module further comprises a limiting part, a first limiting part is arranged on the spliced lamp plates, and a second limiting part is arranged on the back plate; wherein, locating part one end pass the backplate with first spacing portion on the concatenation lamp plate is connected, the other end of locating part with spacing portion of second on the backplate is connected, in order with the backplate with the concatenation lamp plate is fixed.
Optionally, the locating part includes first locating part, the one end joint of first locating part in the spacing portion of second of backplate, the other end joint of first locating part is the first spacing portion on two at least adjacent concatenation lamp plates.
Optionally, the first limiting member includes a first limiting plate, two first connecting posts and two first lugs, and two ends of one first connecting post are connected to the first limiting plate and the first lugs respectively; the second limiting portion comprises a first limiting groove matched with the first limiting plate and a first connecting groove matched with the first connecting column, the first limiting plate is connected with the first limiting groove in a clamped mode, the first connecting column is connected with the first limiting groove in a far-away mode, one end of the first connecting column, which is far away from the first limiting plate, extends out of the first connecting groove and extends into the first limiting groove and the first connecting groove respectively, the first limiting portion of the spliced lamp plate is internally provided with two first lugs which are clamped into the first limiting portion of the spliced lamp plate respectively.
Optionally, the lamp panel includes four spliced lamp panels, a first spliced seam and a second spliced seam are arranged between the four spliced lamp panels, and the first spliced seam and the second spliced seam are arranged perpendicularly to each other; backlight unit still includes first connecting piece, first connecting piece is followed first concatenation seam or the position setting of second concatenation seam, be equipped with two at least first locating parts in order to fix four on the first connecting piece the concatenation lamp plate, on the first connecting piece first locating part with first connecting piece mutually perpendicular sets up.
Optionally, the number of the first connecting pieces is two, the two first connecting pieces are perpendicular to each other, and one first connecting piece is provided with two first limiting pieces.
Optionally, the backlight module includes a first region and a second region, the second region surrounds the first region, the first region is disposed corresponding to a display region of the display panel, and the second region is disposed corresponding to a non-display region of the display panel; the limiting pieces further comprise second limiting pieces, the number of the second limiting pieces corresponds to the number of the spliced lamp panels, and the second limiting pieces are arranged in the second area; the second locating part comprises a second limiting plate, a second connecting column and a second lug, the second connecting column is connected with the second limiting plate and the second lug, the second limiting part further comprises a second limiting groove matched with the second limiting plate and a second connecting groove matched with the second connecting column, the second limiting plate is connected with the second limiting groove in a clamped mode, the second connecting column is kept away from one end of the second limiting plate extends out of the second connecting groove and extends into the first limiting part, and the second lug is clamped into the first limiting part.
Optionally, the back panel includes a main panel and a first side panel, a second side panel, a third side panel and a fourth side panel that are perpendicular to the main panel, and the first side panel, the second side panel, the third side panel and the fourth side panel are respectively disposed on an upper side, a lower side, a left side and a right side of the main panel; a plurality of second limiting grooves and a plurality of second connecting grooves are arranged, and the second limiting grooves and the second connecting grooves are respectively arranged on the first side plate and the second side plate; one end of the second limiting piece, which is provided with the second lug, penetrates through a second limiting groove and a second connecting groove which are positioned on the first side plate and is clamped with the first limiting part; one end of the second limiting part, which is provided with the second lug, penetrates through a second limiting groove and a second connecting groove which are positioned on the second side plate and is clamped with the first limiting part.
Optionally, the first limiting portion includes a second step groove, the second step groove is disposed on one side of the spliced lamp panel close to the first side plate and one side of the spliced lamp panel close to the second side plate, a positioning groove is disposed on the optical membrane, and the positioning groove is matched with the second step groove; one end of the second limiting piece, provided with the second lug, penetrates through the second limiting groove and the second connecting groove on the first side plate, extends into the second step groove and the positioning groove, and is connected with the second step groove and the positioning groove; one end of the second limiting part, provided with the second lug, penetrates through the second limiting groove and the second connecting groove which are positioned on the second side plate, extends into the second step groove and the positioning groove, and is connected with the second step groove and the positioning groove.
Optionally, be equipped with on the optical diaphragm with the concatenation lamp plate is close to the one side of optical diaphragm is the spacing hole of perpendicular setting, one of second locating part and concatenation lamp plate are connected serves and still is equipped with spacing post, spacing post passes the concatenation lamp plate and stretches into spacing downthehole.
The application also discloses a display device, the display device comprises a display panel and the backlight module.
For the scheme that uses double faced adhesive tape installation concatenation lamp plate, this application comes fixed concatenation lamp plate on the backplate through setting up the locating part, need not use the location line to fix a position, the locating part plays location and spacing effect to the concatenation lamp plate, has reduced the probability that positional deviation appears when the installation of concatenation lamp plate, and then reduces the bad probability of optical display who leads to because of backlight unit installation is bad, has reduced the required technical requirement of installation concatenation lamp plate simultaneously, makes things convenient for the installation of concatenation lamp plate.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
fig. 1 is an exploded view of an overall structure of a backlight module according to a first embodiment of the present application;
fig. 2 is a front view of a backlight module according to a second embodiment of the present application;
FIG. 3 is a cut-away view at A in FIG. 2;
FIG. 4 is an enlarged view at B in FIG. 3;
FIG. 5 is a rear view of a backlight module according to a second embodiment of the present application;
FIG. 6 is a cut-away view at C in FIG. 5;
FIG. 7 is an enlarged view at D of FIG. 6;
fig. 8 is an overall structural view of a second stopper in the second embodiment of the present application;
FIG. 9 is a rear view of a backlight module according to a second embodiment of the present application;
fig. 10 is an overall structural view of a first connecting member and a second limiting member in the second embodiment of the present application;
FIG. 11 is a rear view of a backlight module according to a second embodiment of the present application;
fig. 12 is an overall structural view of a first connecting member and a second limiting member in the second embodiment of the present application;
FIG. 13 is a front view of a backlight module according to a third embodiment of the present application;
FIG. 14 is an enlarged view at G of FIG. 13;
FIG. 15 is a cut-away view at E in FIG. 13;
FIG. 16 is an enlarged view at F of FIG. 15;
fig. 17 is an exploded view of the overall structure of a backlight module according to a third embodiment of the present application;
fig. 18 is an exploded view of the overall structure of a backlight module according to a third embodiment of the present application;
fig. 19 is a schematic structural diagram of a display device according to a fourth embodiment of the present application.
100, a back plate; 101. a main board; 102. a first side plate; 103. a second side plate; 104. A third side plate; 105. a fourth side plate; 106. a second limiting part; 110. a first limit groove; 120. a first connecting groove; 130. a second limit groove; 140. a second connecting groove; 210. splicing the lamp panels; 220. a first limiting part; 221. a first step groove; 222. a second step groove; 300. A limiting member; 310. a second limiting member; 311. a second connecting column; 312. a second limiting plate; 313. a second lug; 314. a limiting column; 320. a first limit piece; 321. a first limit plate; 322. a first connecting column; 323. a first lug; 400. a first connecting member; 500. an optical film; 510. a limiting hole; 520. positioning a groove; 600. a backlight module; 700. a display panel; 800. a display device.
Detailed Description
It is to be understood that the terminology, the specific structural and functional details disclosed herein are for the purpose of describing particular embodiments only, and are representative, but that the present application may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as implicitly indicating the number of technical features indicated. Thus, unless otherwise specified, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "plurality" means two or more. The terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that one or more other features, integers, steps, operations, elements, components, and/or combinations thereof may be present or added.
Further, terms of orientation or positional relationship indicated by "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, are described based on the orientation or relative positional relationship shown in the drawings, are simply for convenience of description of the present application, and do not indicate that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.
Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, fixed connections, removable connections, and integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The present application will now be described in detail with reference to the drawings and alternative embodiments, it being understood that any combination of the various embodiments or technical features described below may form new embodiments without conflict.
As shown in fig. 1, as a first embodiment of this application, a backlight module 600 is disclosed, backlight module 600 includes backplate 100, lamp plate and optical diaphragm 500, the lamp plate is installed on backplate 100, optical diaphragm 500 sets up on one side that backplate 100 was kept away from to the lamp plate, the lamp plate includes a plurality of concatenation lamp plates 210, and is a plurality of there is the concatenation seam between the concatenation lamp plate 210, backlight module 600 still includes locating part 300, be equipped with first spacing portion 220 on the concatenation lamp plate 210, be equipped with the spacing portion 106 of second on backplate 100, locating part 300 one end pass backplate 100 with first spacing portion 220 on the concatenation lamp plate 210 is connected, the other end of locating part 300 with the spacing portion 106 of second on the backplate 100 is connected, in order will backplate 100 with concatenation lamp plate 210 is fixed.
When installation concatenation lamp plate 210, the staff passes locating part 300 spacing portion 106 of second on the backplate 100 with first spacing portion 220 on the concatenation lamp plate 210 is connected fixedly to fix concatenation lamp plate 210 and backplate 100, need not use the location line to fix a position, locating part 300 plays location and spacing effect to concatenation lamp plate 210, the probability of positional deviation appears when having reduced concatenation lamp plate 210 installation, and then reduce the bad probability of optical display who leads to because of backlight unit 600 installs badly, reduced the required technical requirement of installation concatenation lamp plate 210 simultaneously, make things convenient for the installation of concatenation lamp plate 210.
As shown in fig. 2 to 12, as a second embodiment of the present application, a refinement of the first embodiment of the present application discloses a backlight module 600, where the limiting member 300 includes a first limiting member 320, one end of the first limiting member 320 is clamped to the second limiting portion 106 of the back plate 100, and the other end of the first limiting member 320 is clamped to the first limiting portions 220 on at least two adjacent spliced lamp panels 210;
specifically, the first limiting member 320 includes a first limiting plate 321, two first connecting posts 322 and two first lugs 323, one the two ends of the first connecting post 322 respectively with the first limiting plate 321 and the first lug 323 are connected, the second limiting portion 106 includes a first limiting groove 110 matched with the first limiting plate 321 and a first connecting groove 120 matched with the first connecting post 322, the first limiting plate 321 with the first limiting groove 110 is clamped, two the first connecting post 322 is kept away from the one end of the first limiting plate 321 stretches out the first connecting groove 120 and stretches into two respectively in the first limiting portion 220 of the splice lamp panel 210, two the first lugs 323 are clamped into two respectively in the first limiting portion 220 of the splice lamp panel 210.
The first limiting portion 220 of the spliced lamp panel 210 comprises a first step groove 221, when the first limiting member 320 is fixedly connected with two spliced lamp panels 210, the first lug 323 is fixedly connected with the first step groove 221 in a clamping manner, a chamfer is arranged on the first lug 323, the cross-sectional area from the end, away from the first connecting post 322, of the first lug 323 to the end, close to the first connecting post 322, of the first lug 323 is gradually increased, so that when the first limiting member 320 is installed, the first lug 323 can play a guiding role;
fix concatenation lamp plate 210 on backplate 100 through first locating part 320, first locating part 320 can be fixed with the distance between two adjacent concatenation lamp plates 210, in order to avoid because installation concatenation lamp plate 210 is insecure, and lead to backlight unit 600 to suffer striking or impact when transportation or removal, two adjacent concatenation lamp plates 210 collide each other and cause the damage, simultaneously, can control the concatenation seam size between two adjacent concatenation lamp plates 210 through first locating part 320, thereby the big or small problem of the uncontrollable concatenation seam between the concatenation lamp plate 210 that brings when using the double faced adhesive tape to bond has been improved, avoid the concatenation seam too big and cause the influence to the picture quality of demonstration.
The lamp panel comprises four spliced lamp panels 210, a first spliced seam and a second spliced seam are arranged between the four spliced lamp panels 210, and the first spliced seam and the second spliced seam are arranged perpendicularly to each other; the backlight module 600 further includes a first connecting member 400, the first connecting member 400 is disposed along the first splicing seam or the second splicing seam, at least two first limiting members 320 are disposed on the first connecting member 400 to fix the four spliced lamp panels 210, and the first limiting members 320 on the first connecting member 400 are perpendicular to the first connecting member 400; the back plate 100 is provided with an accommodating groove corresponding to the first connecting piece 400 for accommodating the first connecting piece 400, and the accommodating groove is communicated with the first limiting groove 110 on the back plate 100;
the following description will be made with reference to the number of the first limiting members 320 being two, which is referred to as a first solution, in the first embodiment, there are two first position-limiting members 320, the two first position-limiting members 320 are respectively disposed at two ends of the first connecting member 400 and are symmetrically disposed with each other, the back plate 100 is provided with two first limiting grooves 110 and four first connecting grooves 120, the two first limiting grooves 110 are arranged across the first splicing seam, the two first limiting grooves 110 are symmetrically arranged relative to the second splicing seam, two first connecting grooves 120 are respectively arranged in one first limiting groove 110, four first connecting grooves 120 are respectively arranged corresponding to four splicing lamp plates 210, four first stepped grooves 221 are arranged on the four splicing lamp plates 210, and the first stepped grooves 221 are arranged corresponding to the first connecting grooves 120;
during the equipment, earlier two first connector strut 322 on the first locating part 320 corresponds first connecting groove 120 extrudes first connector 400 afterwards, first connector 400 and holding tank joint, first limiting plate 321 and first limiting groove 110 joint, first connector strut 322 keep away from the one end of first limiting plate 321 and pass first connecting groove 120 to make first locating part 320 with backplate 100 is connected, two after first locating part 320 is connected with backplate 100, first lug 323 protrusion in backplate 100 sets up, plays the effect of location to the installation of concatenation lamp plate 210, and finally, install concatenation lamp plate 210 on backplate 100 one by one, the one end card that first limiting plate 321 was kept away from to first connector strut 322 is gone into and is located first step groove 221 on concatenation lamp plate 210 to fix concatenation lamp plate 210 on backplate 100.
Of course, the number of the first position-limiting members 320 may also be four, and the number of the first position-limiting members 320 is four, which will be described below, and is referred to as a second scheme for short, in the second scheme, two first connecting members 400 are provided, two first connecting members 400 are arranged perpendicular to each other, two first position-limiting members 320 are provided on one first connecting member 400, two first connecting members 400 are respectively provided corresponding to a first splicing seam and a second splicing seam to form a cross shape, four first position-limiting grooves 110 and eight first connecting grooves 120 are provided on the back panel 100, one first position-limiting groove 110 spans one first splicing seam or one second splicing seam, two first connecting grooves 120 are respectively provided at two ends of one first position-limiting groove 110, and eight first step grooves 221 are provided on four splicing lamp panels 210, the eight first step grooves 221 are arranged corresponding to the eight first connecting grooves 120;
during assembly, the first connecting posts 322 on the four first limiting members 320 are arranged corresponding to the first connecting grooves 120, then the first connecting members 400 are extruded, the first connecting members 400 are clamped with the accommodating grooves, the first limiting plates 321 are clamped with the first limiting grooves 110, one ends of the first connecting posts 322, which are far away from the first limiting plates 321, penetrate through the first connecting grooves 120, so that the first limiting members 320 are connected with the backboard 100, after the four first limiting members 320 are connected with the backboard 100, the first lugs 323 of the first limiting members 320 protrude out of the backboard 100, so as to position the spliced lamp panel 210, finally, the spliced lamp panels 210 are installed on the backboard 100 one by one, one ends of the first connecting posts 322, which are far away from the first limiting plates 321, are clamped into the first step grooves 221 on the spliced lamp panel 210, so as to fix the spliced lamp panel 210 on the backboard 100, only need with the installation of first step groove 221 and first lug 323 and first connecting post 322 correspondence that reserve on the concatenation lamp plate 210 can, concatenation lamp plate 210 simple to operate, easy operation connects a plurality ofly through setting up first connecting piece 400 first locating part 320, when first locating part 320 is installed, only need correspond first connecting piece 400 with the holding tank on backplate 100, can accomplish a plurality ofly in the holding tank of installing first connecting piece 400 on backplate 100 afterwards first locating part 320's installation, the installation rate is fast.
As shown in fig. 13 to 18, as a third embodiment of the present application, a refinement of the second embodiment of the present application is provided, and a backlight module 600 is disclosed, where the backlight module 600 includes a first region and a second region, the second region surrounds the first region, the first region is disposed corresponding to a display region of a display panel, the second region is disposed corresponding to a non-display region of the display panel, the limiting member 300 further includes second limiting members 310, the number of the second limiting members 310 is set corresponding to the number of the spliced lamp panels 210, and the second limiting members 310 are disposed in the second region; the second limiting part 310 comprises a second limiting plate 312, a second connecting column 311 and a second lug 313, the second connecting column 311 is connected with the second limiting plate 312 and the second lug 313, the second limiting part 106 further comprises a second limiting groove 130 matched with the second limiting plate 312 and a second connecting groove 140 matched with the second connecting column 311, the second limiting plate 312 is clamped with the second limiting groove 130, the second connecting column 311 is far away from one end of the second limiting plate 312, the second connecting groove 140 extends into the first limiting part 220, and the second lug 313 is clamped into the first limiting part 220.
The spliced lamp panel 210 is fixed on the backboard 100 by using the second limiting part 310 and the first limiting part 320, the first limiting part 320 is arranged in the first area, the second limiting part 310 is arranged in the second area, so as to firmly fix the spliced lamp panel 210 on the backboard 100, compared with the traditional method of using double faced adhesive tape to bond and fix the lamp panel on the backboard 100, the positioning effect of a positioning line is not needed, meanwhile, the second limiting part 310 and the first limiting part 320 can play a limiting role on the spliced lamp panel 210, the probability of position deviation of the spliced lamp panel 210 during installation is reduced, the probability of bad optical display caused by bad installation of the backlight module 600 is reduced, and the technical requirements for installing the spliced lamp panel 210 are reduced.
Specifically, the second limiting member 310 can have two setting schemes, which will be described below in conjunction with the first scheme and the second scheme in the above embodiment;
in the first embodiment, the backplane 100 includes a main board 101 and a first side board 102, a second side board 103, a third side board 104, and a fourth side board 105 that are perpendicular to the main board 101, the first side board 102, the second side board 103, the third side board 104, and the fourth side board 105 are respectively disposed on the upper side, the lower side, the left side, and the right side of the main board 101, four second position-limiting members 310 are disposed, four second position-limiting grooves 130 and four second connecting grooves 140 are also disposed, two second position-limiting grooves 130 and two second connecting grooves 140 are disposed on the first side board 102, two second position-limiting grooves 130 and two second connecting grooves 140 are disposed on the second side board 103, the first position-limiting portion 220 includes a second stepped groove 222, four second stepped grooves 222 are disposed, the four second stepped grooves 222 are disposed corresponding to the second connecting grooves 140, and when the second position-limiting members 310 are fixedly connected to the lamp panel 210, the second lug 313 is clamped and fixed with the second stepped groove 222, a chamfer is arranged on the second lug 313, and the cross sectional area from one end of the second lug 313 far away from the second connecting column 311 to one end of the second lug 313 close to the second connecting column 311 is gradually increased, so that the second lug 313 can play a role in guiding when the second limiting piece 310 is installed;
when assembling, the two second position-limiting members 310 are correspondingly disposed on the first side plate 102, the other two second limiting members 310 are correspondingly disposed on the second side plate 103, the second limiting members 310 are pressed to make the second limiting plate 312 and the second limiting groove 130 clamped, one end of the second connecting column 311 far away from the second limiting plate 312 passes through the second connecting groove 140, so that the second position-limiting member 310 is connected to the back plate 100, and after the second position-limiting member 310 is connected to the back plate 100, the second lug 313 of the second limiting member 310 is disposed to protrude from the first side edge and the second side edge, with the effect of playing the location to the installation of concatenation lamp plate 210, finally, with second step groove 222 on four concatenation lamp plates 210 respectively with four second lug 313 joint on the second locating part 310, can accomplish the installation of concatenation lamp plate 210.
Of course, in this embodiment, the positioning groove 520 is disposed on the optical film 500, and the positioning groove 520 is disposed in match with the second stepped groove 222, so that the optical film 500 can be installed in an auxiliary manner through the second limiting member 310 during installation, and because the optical film 500 is installed in an auxiliary manner through the second limiting member 310 located in the second region, the second limiting member 310 is located in the non-display region, the optical effect and the display effect of the backlight module 600 are not affected.
In the second solution, four second limiting grooves 130 and four second connecting grooves 140 are disposed on the main board 101 of the back board 100, the four second limiting grooves 130 and the four second connecting grooves 140 are disposed at four corners of the main board 101 of the back board 100, respectively, and are located in the first region, the first limiting portion 220 includes four second step grooves 222, the four second step grooves 222 are disposed corresponding to the second connecting grooves 140, when the second limiting member 310 is fixedly connected to the splice lamp panel 210, the second lug 313 is fixed to the second step groove 222 in a clamping manner, a chamfer is disposed on the second lug 313, the cross-sectional area of one end of the second lug 313 far from the second connecting column 311 is gradually increased from the cross-sectional area of one end of the second lug 313 near the second connecting column 311 to the cross-sectional area of one end of the second lug 313 near the second connecting column 311, so that when the second limiting member 310 is installed, the second lug 313 can play a role of guiding;
during the assembly, correspond first spliced pole 311 of second locating part 310 second connecting groove 140 sets up, extrudes second locating part 310 so that second limiting plate 312 with second limiting groove 130 joint, second connecting groove 140 is passed to the one end that second limiting plate 312 was kept away from to second spliced pole 311, so that second locating part 310 with backplate 100 is connected, second locating part 310 is connected the back with backplate 100, second lug 313 protrusion in of second locating part 310 in backplate 100 sets up, plays the effect of location to the installation of concatenation lamp plate 210, and finally, with first spacing portion 220 on four concatenation lamp plates 210 respectively with four second lug 313 joint on the second locating part 310 can fix concatenation lamp plate 210 on backplate 100.
Of course, in this scheme, be equipped with on the optical film piece 500 with concatenation lamp plate 210 is close to the one side of optical film piece 500 is perpendicular spacing hole 510 that sets up, one of being connected of second locating part 310 and concatenation lamp plate 210 serves and still is equipped with spacing post 314, second locating part 310 with when concatenation lamp plate 210 is connected, spacing post 314 passes concatenation lamp plate 210 and stretch into in the spacing hole 510, second locating part 310 can also play spacing and the effect of location when the installation to the optical film piece 500 in backlight unit 600, makes things convenient for the installation of optical film piece 500, and because second locating part 310 sets up on the second region, correspond display panel's non-display area setting promptly, can not cause the influence to backlight unit 600's optical effect and display effect.
As shown in fig. 19, as a fourth embodiment of the present application, different from the above embodiments, a display device 800 is disclosed, where the display device 800 includes a display panel 700 and a backlight module 600 according to any of the above embodiments.
It should be noted that the inventive concept of the present application can form many embodiments, but the present application has a limited space and cannot be listed one by one, so that, on the premise of no conflict, any combination between the above-described embodiments or technical features can form a new embodiment, and after the embodiments or technical features are combined, the original technical effect will be enhanced.
The foregoing is a more detailed description of the present application in connection with specific alternative embodiments, and the specific implementations of the present application are not to be considered limited to these descriptions. For those skilled in the art to which the present application pertains, several simple deductions or substitutions may be made without departing from the concept of the present application, and all should be considered as belonging to the protection scope of the present application.
Claims (10)
1. A backlight module comprises a back plate, a lamp plate and an optical diaphragm, wherein the lamp plate is installed on the back plate, the optical diaphragm is arranged on one side, away from the back plate, of the lamp plate, the lamp plate comprises a plurality of spliced lamp plates, and splicing seams exist among the spliced lamp plates;
wherein, locating part one end pass the backplate with first spacing portion on the concatenation lamp plate is connected, the other end of locating part with spacing portion of second on the backplate is connected, in order with the backplate with the concatenation lamp plate is fixed.
2. The backlight module according to claim 1, wherein the position-limiting member comprises a first position-limiting member, one end of the first position-limiting member is connected to the second position-limiting portion of the back plate in a clamping manner, and the other end of the first position-limiting member is connected to the first position-limiting portions of at least two adjacent spliced lamp panels in a clamping manner.
3. The backlight module according to claim 2, wherein the first position-limiting member comprises a first position-limiting plate, two first connecting posts and two first lugs, and two ends of one of the first connecting posts are respectively connected to the first position-limiting plate and the first lugs;
the second limiting portion comprises a first limiting groove matched with the first limiting plate and a first connecting groove matched with the first connecting column, the first limiting plate is connected with the first limiting groove in a clamped mode, the first connecting column is connected with the first limiting groove in a far-away mode, one end of the first connecting column, which is far away from the first limiting plate, extends out of the first connecting groove and extends into the first limiting groove and the first connecting groove respectively, the first limiting portion of the spliced lamp plate is internally provided with two first lugs which are clamped into the first limiting portion of the spliced lamp plate respectively.
4. The backlight module according to claim 3, wherein the lamp panel comprises four spliced lamp panels, a first splicing seam and a second splicing seam are arranged between the four spliced lamp panels, and the first splicing seam and the second splicing seam are arranged perpendicularly to each other;
backlight unit still includes first connecting piece, first connecting piece is followed first concatenation seam or the position setting of second concatenation seam, be equipped with two at least first locating parts in order to fix four on the first connecting piece the concatenation lamp plate, on the first connecting piece first locating part with first connecting piece mutually perpendicular sets up.
5. The backlight module as claimed in claim 4, wherein there are two first connectors, two first connectors are disposed perpendicular to each other, and two first stoppers are disposed on one of the first connectors.
6. The backlight module according to claim 4 or 5, wherein the backlight module comprises a first region and a second region, the second region surrounds the first region, the first region is disposed corresponding to a display region of the display panel, and the second region is disposed corresponding to a non-display region of the display panel;
the limiting pieces further comprise second limiting pieces, the number of the second limiting pieces corresponds to the number of the spliced lamp panels, and the second limiting pieces are arranged in the second area;
the second locating part comprises a second limiting plate, a second connecting column and a second lug, the second connecting column is connected with the second limiting plate and the second lug, the second limiting part further comprises a second limiting groove matched with the second limiting plate and a second connecting groove matched with the second connecting column, the second limiting plate is connected with the second limiting groove in a clamped mode, the second connecting column is kept away from one end of the second limiting plate extends out of the second connecting groove and extends into the first limiting part, and the second lug is clamped into the first limiting part.
7. The backlight module according to claim 6, wherein the back plate comprises a main plate and a first side plate, a second side plate, a third side plate and a fourth side plate arranged perpendicular to the main plate, and the first side plate, the second side plate, the third side plate and the fourth side plate are respectively arranged on the upper side, the lower side, the left side and the right side of the main plate;
a plurality of second limiting grooves and a plurality of second connecting grooves are arranged, and the second limiting grooves and the second connecting grooves are respectively arranged on the first side plate and the second side plate;
one end of the second limiting piece, provided with the second lug, penetrates through a second limiting groove and a second connecting groove which are positioned on the first side plate to be clamped with the first limiting part; one end of the second limiting part, which is provided with the second lug, penetrates through a second limiting groove and a second connecting groove which are positioned on the second side plate and is clamped with the first limiting part.
8. The backlight module according to claim 7, wherein the first position-limiting portion comprises a second stepped groove, the second stepped groove is disposed on one side of the spliced lamp panel close to the first side plate and one side of the spliced lamp panel close to the second side plate, a positioning groove is disposed on the optical film, and the positioning groove is matched with the second stepped groove;
one end of the second limiting piece, provided with the second lug, penetrates through the second limiting groove and the second connecting groove on the first side plate, extends into the second step groove and the positioning groove, and is connected with the second step groove and the positioning groove; one end of the second limiting part, provided with the second lug, penetrates through the second limiting groove and the second connecting groove which are positioned on the second side plate, extends into the second step groove and the positioning groove, and is connected with the second step groove and the positioning groove.
9. The backlight module according to claim 6, wherein the optical film is provided with a limiting hole which is vertically arranged with one surface of the spliced lamp plate close to the optical film, one end of the second limiting member connected with the spliced lamp plate is further provided with a limiting post, and the limiting post penetrates through the spliced lamp plate and extends into the limiting hole.
10. A display device comprising a display panel and a backlight module according to any one of claims 1 to 9.
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| CN202111661478.5A CN114545681B (en) | 2021-12-30 | 2021-12-30 | Backlight module and display device |
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| CN202111661478.5A CN114545681B (en) | 2021-12-30 | 2021-12-30 | Backlight module and display device |
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| CN114545681B (en) | 2023-03-14 |
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