CN115327813B - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
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- CN115327813B CN115327813B CN202210863361.3A CN202210863361A CN115327813B CN 115327813 B CN115327813 B CN 115327813B CN 202210863361 A CN202210863361 A CN 202210863361A CN 115327813 B CN115327813 B CN 115327813B
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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
- G02F1/133603—Direct backlight with LEDs
-
- 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
- G02F1/133605—Direct backlight including specially adapted reflectors
-
- 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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- 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 application discloses backlight unit and display device, backlight unit include backplate main part, a plurality of lamp plate, and a plurality of lamp plate sets up in the same side of backplate main part, and backlight unit still includes a plurality of altitude mixture control spare, and each altitude mixture control spare corresponds and fixed the setting with each lamp plate respectively and is close to each corner of one side of backplate main part, but each altitude mixture control spare respectively with backplate main part swing joint to the altitude mixture control each lamp plate. Through the structure, the backlight module can adjust the height of each lamp panel through the height adjusting piece to enable each lamp panel to be located on the same plane, the problem of the height difference of the lamp panels is solved, and a better lamp panel splicing effect is obtained.
Description
Technical Field
The application relates to the technical field of display, in particular to a backlight module and a display device.
Background
In recent years, display technology has been rapidly developed, and attention has been paid to Mini LED displays, and it is known that in Mini LED displays, the cost of a lamp panel in a backlight module is one of the main reasons for the high price of the Mini LED displays.
The cost of the lamp panel is also because of the manufacturing difficulty, the manufacturing yield is lower and the manufacturing difficulty is higher as the lamp panel with larger size is manufactured, so that the combined spliced lamp panel is also an important direction of research in the industry.
However, in the process of splicing, a height difference is easy to occur between a plurality of lamp panels due to production or assembly process problems, but the method is limited by a conventional fixing method, and the splicing effect is general.
Disclosure of Invention
The application provides a backlight module and a display device to solve the problem that the difference in height appears easily between a plurality of lamp plates in the backlight module.
For solving above-mentioned technical problem, this application provides a backlight unit, and backlight unit includes backplate main part, a plurality of lamp plate, and a plurality of lamp plates set up in the same side of backplate main part, and backlight unit still includes a plurality of altitude mixture control spare, and each altitude mixture control spare corresponds and fixed the setting with each lamp plate respectively and is close to each corner of one side of backplate main part, but each altitude mixture control spare respectively with backplate main part swing joint to correspond the altitude mixture control of each lamp plate.
Wherein, each corner of each lamp panel, which is close to one side of the backboard main body, is fixedly provided with a connecting piece, and each connecting piece corresponds to each height adjusting piece one by one; and a plurality of first through holes are formed at positions of the backboard main body corresponding to the connecting pieces, and the plurality of connecting pieces of each lamp panel penetrate through the corresponding first through holes on the backboard main body and are fixedly connected with the corresponding height adjusting pieces.
The height adjusting piece comprises an adjusting stud and a nut, wherein the outer wall of the adjusting stud is in threaded connection with the inner wall of the corresponding first through hole, and the nut is in threaded connection with the outer wall of the adjusting stud; the second through hole is formed on the adjusting stud, and the projection size of the second through hole on the lamp panel is smaller than the projection size of one end, far away from the lamp panel, of the connecting piece on the lamp panel; one end of the connecting piece, which is far away from the lamp panel, penetrates through the second through hole and is clamped and fixed with the adjusting stud; when the height adjusting piece adjusts the height, the screw thread rotates the adjusting stud to adjust the relative height between the adjusting stud and the first through hole until the height is preset, and the screw thread rotates the nut to fix the adjusting stud.
The connecting piece comprises a bolt, the rod part of the bolt is fixed with one side of the lamp panel through threads, and the head part of the bolt penetrates through the second through hole to be clamped and fixed with the adjusting stud.
Wherein, connecting piece and the lamp plate integrated into one piece that corresponds, the one end that the connecting piece was kept away from the corresponding lamp plate passes the second through-hole and adjusts the double-screw bolt block fixed.
Wherein, backlight unit still includes: the limiting mechanism comprises a convex limiting piece and a concave limiting piece; each lamp panel comprises a first side face, a second side face, a third side face and a fourth side face which are vertically and adjacently arranged in sequence, wherein the first side face and the third side face are parallel and oppositely arranged, and the second side face and the fourth side face are vertically and oppositely arranged; wherein, be provided with concave locating part on the first side and the second side of each lamp plate, be provided with the convex locating part on the third side and the fourth side of each lamp plate to the shape of the concave locating part on the convex locating part on each lamp plate and the adjacent lamp plate mutually agrees.
The concave limiting piece comprises a movable block, a concave block and an elastic piece; the convex limiting piece comprises a base and a convex part; one end of the elastic piece is fixedly connected with the corresponding lamp panel, the other end of the elastic piece is fixedly connected with the movable block, one side, far away from the elastic piece, of the movable block is attached and fixedly provided with the concave block, one side, far away from the concave block, of the movable block is provided with a concave groove, and an opening of the concave groove is far away from the movable block; one side of the base is attached to and fixedly arranged on the corresponding lamp panel, the other side of the base is attached to and fixedly arranged on the protruding portion, and the protruding portion is away from the base to protrude; wherein, the shape of the concave groove on the concave block is matched with the shape of the convex part.
The concave block of the concave limiting piece is a transparent concave block, the base of the convex limiting piece is a lamp strip, the protruding portion is a lamp bead, and the lamp strip is further electrically connected with the lamp bead.
Wherein, the concave block is coated with a reflective coating on the side facing away from the movable block.
In order to solve the technical problems, the application provides a display device, which comprises a liquid crystal panel, a frame, a diaphragm assembly and a backlight module; the liquid crystal panel is arranged in a first mounting frame at one side of the frame, the backlight module is arranged in a second mounting frame at the other side of the frame, and the diaphragm assembly is arranged between the backlight module and the frame;
the backlight module comprises any one of the backlight modules.
The back plate main body of the backlight module comprises a first part and a second part which are connected with each other, and the projection area of the first part on the frame is larger than that of the second part on the frame; at least two right-angle pieces are formed on the other side of the frame, and the right-angle pieces and the frame are vertically arranged to form a second installation frame; the first part is clamped in the second installation frame to fix the frame and the backlight module.
The beneficial effects of the application are that; the backlight module comprises a back plate main body, a plurality of lamp plates and a plurality of height adjusting parts, wherein the lamp plates are arranged on the same side of the back plate main body, the height adjusting parts are respectively corresponding to and fixedly arranged at corners of one side, close to the back plate main body, of each lamp plate, the height adjusting parts are respectively movably connected with the back plate main body so as to correspondingly adjust the height of each lamp plate, and therefore the lamp plates are located on the same plane through adjusting the height of each lamp plate, the problem of height difference between the lamp plates is solved, and better lamp plate splicing effect is obtained.
Drawings
Fig. 1 is a schematic partial structure of a first embodiment of a backlight module provided in the present application;
FIG. 2 is a schematic top view of the backlight module of the embodiment of FIG. 1;
fig. 3 is a schematic structural diagram of a second through hole 1211 of the present application scenario;
fig. 4 is a schematic top view of a partial structure of an embodiment of a backlight module 100;
FIG. 5 is a schematic view of the configuration of the male and female stop members;
fig. 6 is a schematic partial structure of a second embodiment of a backlight module provided in the present application;
FIG. 7 is a schematic diagram of a display device according to an embodiment of the present disclosure;
fig. 8 is a schematic diagram of an exploded structure of the display device in the embodiment of fig. 7.
Reference numerals illustrate:
100, a backlight module; 110, a back plate body; 111, a first portion; 112, a second portion; 1101, a first via; 120, a height adjustment; 121, adjusting the stud; 1211, a second through hole; 1212, a first stepped bore; 1213, second stepped bore; 122, a nut; 130, a lamp panel; 131, a first side; 132, a second side; 133, a third side; 134, a fourth side; 135, a connector; 140, a limiting mechanism; 141, concave limiting members; 1411, elastic members; 1412, movable blocks; 1413, concave blocks; 1414, concave grooves; 1415, a housing; 142, male limit members; 1421, a base; 1422, projections; 200, a display device; 210, a frame; 211, right angle member; 220, a second mounting frame; 230, a liquid crystal panel; 240, a diaphragm assembly.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
It should be noted that, in the embodiment of the present application, directional indications (such as up, down, left, right, front, and rear … …) are referred to, and the directional indications are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.
Referring to fig. 1-2, fig. 1 is a schematic partial structure of a first embodiment of a backlight module provided in the present application, and fig. 2 is a schematic top view of the backlight module in the embodiment of fig. 1. The present embodiment is described taking the case where the connecting member includes a bolt.
The backlight module 100 of the embodiment of the application includes a back plate main body 110, a plurality of light panels 130, and a plurality of height adjusting members 120. The back plate main body 110 is used for supporting the entire backlight module 100, and the lamp panel 130 is used for emitting light. The number of the lamp panels 130 in the backlight module 100 may be 12, 24, 48, 120, etc., and may be specifically set based on actual requirements, which is not limited herein.
The plurality of light panels 130 are disposed on the same side of the back plate main body 110, and each height adjusting member 120 is disposed corresponding to and fixed to each corner of one side of each light panel 130 near the back plate main body 110.
The height adjusting members 120 are movably connected to the back plate main body 110, so as to correspondingly adjust the height of each light panel 130.
The plurality of height adjusting members 120 may include one or more of a screw adjuster, a piston adjuster, a cylinder adjuster, a snap adjuster, etc., without limitation. The height between the corresponding lamp panels 130 and the back plate main body 110 can be adjusted by the height adjusting piece 120, so that the lamp panels 130 are positioned on the same plane by adjusting the height of each lamp panel 130, and the problem of the height difference of the lamp panels is solved.
Through the structure, the backlight module of the embodiment comprises a back plate main body, a plurality of lamp plates and a plurality of height adjusting parts, wherein the lamp plates are arranged on the same side of the back plate main body, the height adjusting parts are respectively corresponding to and fixedly arranged at the corners of one side, close to the back plate main body, of each lamp plate, the height adjusting parts are respectively movably connected with the back plate main body so as to correspondingly adjust the height of each lamp plate, and therefore the lamp plates are located on the same plane through adjusting the height of each lamp plate, the problem of height difference between the lamp plates is solved, and better lamp plate splicing effect is obtained.
In other embodiments, the corner of each lamp panel 130 near one side of the back panel body 110 is fixedly provided with a connecting member 135, and the plurality of connecting members 135 and the plurality of height adjusting members 120 are in one-to-one correspondence, i.e. the number of connecting members 135 in the backlight module 100 is the same as the number of height adjusting members 120, and the positions of the connecting members are corresponding to each other.
In a specific application scenario, when the backlight module 100 includes 20 light panels 130, four corners on one side of each light panel 130 may be respectively provided with one connecting member 135, that is, the number of connecting members 135 in the entire backlight module 100 is 80, so that the number of height adjusting members 120 in the entire backlight module 100 is 80, and the position of each height adjusting member 120 corresponds to the position of the connecting member 135 on the four corners of the light panel 130.
The back plate main body 110 is provided with a plurality of first through holes 1101 corresponding to the positions of the connecting pieces 135, that is, the number and positions of the first through holes 1101 on the back plate main body 110 are also in one-to-one correspondence with the connecting pieces 135 fixedly arranged on one side of the lamp panel 130, so that each lamp panel 130 penetrates through the corresponding first through hole 1101 on the back plate main body 110 through the plurality of connecting pieces 135, and is fixedly connected with the corresponding height adjusting piece 120 so as to be fixed with the back plate main body 110. That is, the connecting piece 135 of the light panel 130 is disposed on one side of the back plate main body 100, the corresponding height adjusting piece 120 is disposed on the other side of the back plate main body 100, and the back plate main body 100 is correspondingly provided with the first through hole 1101, and the connecting piece 135 of the light panel 130 passes through the first through hole 1101 and is fixedly connected with the height adjusting piece 120, so that the height between the corresponding light panel 130 and the back plate main body 110 is adjusted by the height adjusting piece 120, and the light panels 130 are located on the same plane by adjusting the height of the light panels 130, so that the problem of height difference between the light panels 130 is eliminated.
In other embodiments, the height adjuster 120 may include an adjusting stud 121 and a nut 122, the outer wall of the adjusting stud 121 being screwed with the inner wall of the corresponding first through hole 1101, and the nut 122 being screwed with the outer wall of the adjusting stud 121. That is, the diameter size of the adjusting stud 121 is matched with the diameter size of the first through hole 1101, so that the outer wall of the adjusting stud 121 is in threaded connection with the inner wall of the corresponding first through hole 1101; the diameter of the nut 122 is sized to match the diameter of the adjustment stud 121 such that the nut 122 is threadedly coupled to the outer wall of the adjustment stud 121. The diameter size of the nut 122 is larger than that of the first through hole 1101, so that the relative position between the adjustment stud 121 and the first through hole 1101 can be fixed.
The adjusting stud 122 is formed with a second through hole 1211, and one end of the connecting member 135, which is far away from the lamp panel 130, passes through the second through hole 1211 and is engaged with and fixed to the adjusting stud 121.
In a specific application scenario, the second through hole 1211 includes a first stepped hole 1212 and a second stepped hole 1213 that are mutually communicated, the first stepped hole 1212 is disposed near the back plate main body 110, and a projection size of the first stepped hole 1213 on the light plate 130 is smaller than a projection size of an end of the connecting piece 135, which is far away from the light plate 130, on the light plate 130, so that an end of the connecting piece 135, which is far away from the light plate 130, can be fastened and fixed with the adjusting stud 121 through the first stepped hole 1213.
In another specific application scenario, the second through hole 1211 may be a straight hole, please refer to fig. 3, and fig. 3 is a schematic structural diagram of the second through hole 1211 in the present application scenario.
The diameter dimensions of the positions of the second through holes 1211 in the present embodiment are the same, and the projection dimension of the second through holes 1211 on the lamp panel 130 is smaller than the projection dimension of the end of the connecting piece 135, which is far away from the lamp panel 130, on the lamp panel 130, so that the end of the connecting piece 135, which is far away from the lamp panel 130, can be fastened and fixed with the adjusting stud 121 through the second through holes 1211.
When the height adjusting member 120 adjusts the height, the adjusting stud 121 is screwed to adjust the relative Z-axis height between the adjusting stud 121 and the first through hole 1101 until the preset height, and the adjusting stud 121 is fixed by the screw nut 122. The preset height can be set according to actual requirements, and is not limited herein.
In this embodiment, the adjustment stud 121 is screwed with the first through hole 1101 by the threaded connection therebetween, so as to adjust the relative Z-axis height between the adjustment stud 121 and the first through hole 1101 to a preset height, so that the connector 135 fixedly connected with the adjustment stud 121 drives the lamp panel 130 to adjust to the preset height, and then the nut 122 is screwed to fix the adjustment stud 121, thereby completing the height adjustment of the lamp panel 130.
In a specific application scenario, when the lamp panel 130 needs to be adjusted in height, the height adjusting members 120 corresponding to the at least one connecting member 135 on one side of the lamp panel can be adjusted respectively to achieve the height adjustment of the lamp panel 130.
In other embodiments, the connecting member 135 may include a bolt, where a shaft portion of the bolt is screwed to one side of the lamp panel 130, and a head portion of the bolt passes through the second through hole 1211 to be fastened to the adjusting stud 121.
Wherein the outer wall of the shank of the bolt may be screw-fastened with the inner wall of the second through hole 1211.
In other embodiments, the backlight module 100 further includes: and a limiting mechanism. Referring to fig. 4, fig. 4 is a schematic top view of a partial structure of an embodiment of a backlight module 100.
The limiting mechanism 140 of the present embodiment includes a male limiting member 142 and a female limiting member 141. That is, the male stopper 142 has a convex structure, and the female stopper 141 has a concave structure.
Each light panel 130 includes a first side 131, a second side 132, a third side 133, and a fourth side 134 that are vertically and adjacently disposed in sequence, that is, four sides of the light panel 130, where the first side 131 and the third side 133 are parallel and oppositely disposed, and the second side 132 and the fourth side 134 are vertically and oppositely disposed.
The first side 131 and the second side 132 of each light panel 130 are provided with a concave limiting member 141, and the third side 133 and the fourth side 134 of each light panel 130 are correspondingly provided with a convex limiting member 142, so that the shapes of the convex limiting member 142 on each light panel 130 and the concave limiting member 141 on the adjacent light panel 130 are mutually matched.
Through the arrangement, each lamp panel 130 can be clamped and limited by the convex limiting piece 142 and the concave limiting piece 141 on the four sides of the lamp panel 130 and the corresponding concave limiting piece 141 and the convex limiting piece 142 on the lamp panels 130 adjacent to the periphery respectively, so that when the adjacent lamp panels 130 are not at the same horizontal height, whether the convex limiting piece 142 is exposed or partially exposed outside the concave limiting piece 141 can be observed, whether the heights of the lamp panels 130 are flush or not can be judged conveniently, and when the heights of the lamp panels are not flush, the heights of the lamp panels 130 can be adjusted through the height adjusting piece 120, so that the convex limiting piece 142 is completely embedded in the concave limiting piece 141, and the height flush of the adjacent lamp panels 130 is realized.
Referring to fig. 5, fig. 5 is a schematic structural view of the male and female stoppers.
In other embodiments, the female limiter 141 includes a movable block 1412, a female block 1413, and an elastic member 1411; the male limiter 142 includes a base 1421 and a boss 1422.
In a specific application scenario, one end of the elastic element 1411 is fixedly connected with the corresponding lamp panel 130, the other end of the elastic element 1411 is fixedly connected with the movable block 1412, one side of the movable block 1412 away from the elastic element 1411 is attached to and fixedly provided with the concave block 1413, and a concave groove 1414 is formed on one side of the concave block 1413 away from the movable block 1412, wherein an opening of the concave groove 1414 on the concave block 1413 is away from the movable block 1412.
In another specific application scenario, female limiter 141 further includes housing 1415. One side of the outer wall of the housing 1415 is fixedly and in fit connection with the corresponding lamp panel 130, the inner wall of the housing 1415 corresponding to one side of the outer wall is fixedly connected with one end of the elastic piece 1411, the other end of the elastic piece 1411 is fixedly connected with the movable block 1412, the movable block 1412 is in slidable contact with the inner wall of the housing 1415, one side of the movable block 1412 far away from the elastic piece 1411 is fit and fixedly provided with a concave block 1413, a concave groove 1414 is formed on one side of the concave block 1413 far away from, and an opening of the concave groove 1414 on the concave block 1413 is far away from the movable block 1412.
Wherein, the lamp panel 130 can be made of a printed circuit board, when the printed circuit board is easy to expand due to heat, then the structure for splicing a plurality of lamp panels 130 is easy to die due to mutual extrusion when expanding, but the elastic piece 1411 in the embodiment can better solve the problem by utilizing the elasticity of the printed circuit board, when the lamp panel 130 expands, the movable block 1412 can move in the cavity of the housing 1415 under the action of the pressure of the lamp panel 130, so that the printed circuit board is prevented from being damaged due to the fact that the printed circuit board is directly subjected to larger extrusion force, the reliability and stability of the lamp panel 130 are improved, and the reliability and stability of the backlight module 100 are further improved.
One side of the base 1421 of the male limiting member 142 is attached to and fixed to the corresponding lamp panel 130, and the other side of the base 1421 is attached to and fixed to the protrusion 1422, where the protrusion 1422 faces away from the protrusion of the base 1421.
The shape of the concave groove 1414 on the concave block 1413 is matched with the shape of the convex portion 1422, so that the convex portion 1422 of the convex limiting member 142 is clamped and limited with the concave groove 1414 of the concave limiting member 141, when the adjacent lamp panels 130 are not at the same horizontal height, whether the convex portion 1422 is exposed or partially exposed outside the concave groove 1414 can be observed, so that whether the heights of the lamp panels 130 are flush or not can be judged conveniently, and when the heights of the lamp panels are not flush, the heights of the lamp panels 130 can be adjusted through the height adjusting member 120, so that the convex limiting member 142 is completely embedded in the concave limiting member 141, and the height flush of the adjacent lamp panels 130 is realized.
In other embodiments, the concave block 1413 of the concave limiting member 141 is a transparent concave block, the base 1421 of the convex limiting member 142 is a light bar, the convex portion 1422 is a light bulb, and the light bar is further electrically connected to the light bulb so that the light bulb emits light. Preferably, the housing 1415 is also a transparent housing.
Wherein, when the lamp plate part of backlight unit 100 is formed by the concatenation of many lamp plates 130, the concatenation of two adjacent lamp plates 130 can have a splice seam, and when the lamp plate 130 was luminous, the splice seam led to splice seam regional light inhomogeneous easily, influences backlight unit's luminous efficacy, and lamp pearl in this embodiment is located splice seam position department, can carry out the light filling to splice seam position department, solves the problem of splice seam, and specifically, concave piece 1413 is transparent concave piece at least part and is transparent material, allows light to pass through. Thereby improving the brightness of the splice seam, avoiding the problem of uneven light in the splice seam area and improving the light uniformity in the splice seam area.
In other embodiments, the side of the concave block 1413 facing away from the movable block 1412 is coated with a reflective coating (not shown), preferably, the inner wall comprising the concave groove 1414 is coated with a reflective coating to reflect the light of the lamp beads, enhance the light utilization, and enable the light to be emitted along the direction from the slit to the panel, thereby further improving the uniformity of the light in the splice seam area.
In other embodiments, the connector 135 may also be integrally formed with the corresponding light panel 130. Referring to fig. 6, fig. 6 is a schematic partial structure of a second embodiment of a backlight module provided in the present application. Features of the present embodiment other than the structure of the connecting member 135, such as the structure and the positional relationship of the back plate main body, the lamp panel, the height adjusting member and the limiting mechanism, the positional relationship between the connecting member and the height adjusting member, and the like, are the same as those of the foregoing embodiments, and are not described herein.
The connecting piece 135 and the corresponding lamp panel 130 in this embodiment are integrally formed, the connecting piece 135 is in a buckle arrangement, and one end of the connecting piece 135, which is far away from the corresponding lamp panel 130, passes through the second through hole 1211 and is engaged and fixed with the adjusting stud 121.
The end of the connecting member 135 away from the corresponding lamp panel 130 may have a wedge shape, so that the relative fastening between the stud 121 and the corresponding lamp panel 130 may be adjusted to prevent loosening.
Referring to fig. 7-8, fig. 7 is a schematic structural diagram of an embodiment of a display device provided in the present application, and fig. 8 is a schematic exploded structural diagram of the display device in the embodiment of fig. 7.
The display device 200 of the present embodiment includes a liquid crystal panel 230, a frame 210, a membrane module 240, and a backlight module 100; the display device 200 has a direct type structure as a whole.
The liquid crystal panel 230 is mounted in a first mounting frame (not shown) at one side of the frame 210, the backlight module 100 is mounted in a second mounting frame 220 at the other side of the frame 210, and the diaphragm assembly 240 is disposed between the backlight module 100 and the frame 210. The film assembly 240 serves to improve uniformity of the surface light source.
The backlight module 100 includes the backlight module 100 of any one of the above embodiments.
Through above-mentioned structure, each lamp plate of backlight unit in the display device of this embodiment can be through the height-adjusting piece height-adjusting of each lamp plate to through the high messenger each lamp plate of adjusting each lamp plate on the coplanar, eliminate the problem of lamp plate difference in height, obtain better lamp plate concatenation effect, improve display device's reliability and stability.
In other embodiments, the backlight module 100 is of a step-type design, and the back plate main body 110 of the backlight module 100 includes a first portion 111 and a second portion 112 connected to each other, wherein a projection area of the first portion 111 on the frame 210 is larger than a projection area of the second portion 112 on the frame 210.
At least two right-angle pieces 211 are formed on the other side of the frame 210, the right-angle pieces 211 are perpendicular to the frame 210 to form a second mounting frame 220, and the first portion 111 is engaged in the second mounting frame 220 to fix the frame 210 and the backlight module 100.
The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the patent application, and all equivalent structures or equivalent processes using the descriptions and the contents of the present application or other related technical fields are included in the scope of the patent application.
Claims (9)
1. The backlight module comprises a back plate main body and a plurality of lamp plates, wherein the lamp plates are arranged on the same side of the back plate main body;
the lamp panel comprises a backboard main body, a plurality of height adjusting parts, a plurality of first through holes, a plurality of connecting parts, a plurality of second through holes, a plurality of first connecting parts, a plurality of second through holes, a plurality of first connecting parts and a plurality of second through holes, wherein the plurality of second through holes are respectively arranged at the positions, corresponding to the plurality of second through holes, of the lamp panel, are fixedly connected with the corresponding height adjusting parts, and the plurality of second through holes are respectively arranged at the positions, corresponding to the connecting parts, of the backboard main body;
the height adjusting piece comprises an adjusting stud, the outer wall of the adjusting stud is in threaded connection with the inner wall of the corresponding first through hole, and the nut is in threaded connection with the outer wall of the adjusting stud; and a second through hole is formed on the adjusting stud, and one end, far away from the lamp panel, of the connecting piece penetrates through the second through hole and is clamped and fixed with the adjusting stud.
2. The backlight module according to claim 1, wherein a projection size of the second through hole on the lamp panel is smaller than a projection size of one end of the connecting piece, which is far away from the lamp panel, on the lamp panel;
when the height of the height adjusting piece is adjusted, the adjusting stud is rotated by threads, so that the relative height between the adjusting stud and the first through hole is adjusted to reach a preset height, and the nut is rotated by threads to fix the adjusting stud.
3. The backlight module according to claim 2, wherein the connecting piece comprises a bolt, a rod portion of the bolt is fixed with one side of the lamp panel through threads, and a head portion of the bolt penetrates through the second through hole to be clamped and fixed with the adjusting stud.
4. The backlight module according to claim 2, wherein the connecting piece and the corresponding lamp panel are integrally formed, and one end of the connecting piece, which is far away from the corresponding lamp panel, passes through the second through hole and is clamped and fixed with the adjusting stud.
5. A backlight module according to any of claims 1-4, further comprising: the limiting mechanism comprises a convex limiting piece and a concave limiting piece;
each lamp panel comprises a first side face, a second side face, a third side face and a fourth side face which are vertically and adjacently arranged in sequence, wherein the first side face is parallel to and oppositely arranged with the third side face, and the second side face is vertically and oppositely arranged with the fourth side face;
the lamp panels are provided with concave limiting parts on the first side surface and the second side surface, and convex limiting parts are correspondingly arranged on the third side surface and the fourth side surface of each lamp panel, so that the shapes of the convex limiting parts on each lamp panel and the concave limiting parts on the adjacent lamp panels are mutually matched.
6. The backlight module according to claim 5, wherein the concave limiting member comprises a movable block, a concave block and an elastic member; the convex limiting piece comprises a base and a protruding part;
one end of the elastic piece is fixedly connected with the corresponding lamp panel, the other end of the elastic piece is fixedly connected with the movable block, one side, far away from the elastic piece, of the movable block is attached and fixedly provided with the concave block, one side, far away from the concave block, of the movable block is provided with a concave groove, and an opening of the concave groove is far away from the movable block;
one side of the base is attached to and fixedly arranged on the corresponding lamp panel, the other side of the base is attached to and fixedly arranged on the protruding portion, and the protruding portion is away from the base and protrudes;
wherein, the shape of the concave groove on the concave block is matched with the shape of the convex part.
7. A backlight module according to claim 6, wherein,
the concave block of the concave limiting piece is a transparent concave block, the base of the convex limiting piece is a lamp strip, the protruding portion is a lamp bead, and the lamp strip is further electrically connected with the lamp bead.
8. A display device comprises a liquid crystal panel, a frame, a diaphragm assembly and a backlight module; the liquid crystal display device is characterized in that the liquid crystal display panel is arranged in a first mounting frame at one side of the frame, the backlight module is arranged in a second mounting frame at the other side of the frame, and the diaphragm assembly is arranged between the backlight module and the frame; the backlight module comprising a backlight module according to any one of claims 1-7.
9. The display device of claim 8, wherein the display device comprises a display device,
the back plate main body of the backlight module comprises a first part and a second part which are connected with each other, and the projection area of the first part on the frame is larger than that of the second part on the frame;
at least two right-angle pieces are formed on the other side of the frame, and the right-angle pieces are perpendicular to the frame to form the second mounting frame;
the first part is clamped in the second mounting frame to fix the frame and the backlight module.
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| CN116013149B (en) | 2023-02-27 | 2023-06-27 | 惠科股份有限公司 | Backboard assembly, backlight module and display |
| CN117055257B (en) * | 2023-07-18 | 2024-06-07 | 滁州惠科光电科技有限公司 | Backlight module and display device |
| CN118131537A (en) * | 2024-05-10 | 2024-06-04 | 惠科股份有限公司 | Backlight module and display device |
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| CN216697683U (en) * | 2021-12-28 | 2022-06-07 | 绵阳惠科光电科技有限公司 | Backlight module and display device |
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| CN101526185A (en) * | 2009-04-22 | 2009-09-09 | 上海广电光电子有限公司 | LED backlight module |
| CN102506396A (en) * | 2011-11-18 | 2012-06-20 | 深圳市华星光电技术有限公司 | Locking accessory, backlight module and liquid crystal display device |
| CN103090271A (en) * | 2013-01-24 | 2013-05-08 | 青岛海信电器股份有限公司 | Novel straight down type backlight module and liquid crystal display television (LCD TV) |
| CN103995392B (en) * | 2014-06-17 | 2017-01-18 | 中航华东光电有限公司 | Distance regulating device and method used for backlight and optical film |
| CN214311209U (en) * | 2020-12-30 | 2021-09-28 | 深圳创维－Rgb电子有限公司 | Backlight module and display device |
| CN216792634U (en) * | 2021-12-20 | 2022-06-21 | 广州视源电子科技股份有限公司 | Backlight module and display device |
| CN114326208A (en) * | 2021-12-29 | 2022-04-12 | 高创(苏州)电子有限公司 | Backlight panel, backlight module and liquid crystal display device |
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