CN115327813A - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
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- CN115327813A CN115327813A CN202210863361.3A CN202210863361A CN115327813A CN 115327813 A CN115327813 A CN 115327813A CN 202210863361 A CN202210863361 A CN 202210863361A CN 115327813 A CN115327813 A CN 115327813A
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- 239000000203 mixture Substances 0.000 claims abstract description 17
- 239000004973 liquid crystal related substance Substances 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 2
- 239000012528 membrane Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 12
- 239000011324 bead Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
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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
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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
- G02F1/133605—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 plates, and a plurality of lamp plates set up in same one side of backplate main part, and backlight unit still includes a plurality of altitude mixture control spares, and each altitude mixture control spare corresponds and fixed the setting with each corner that each lamp plate is close to one side of backplate main part respectively, and each altitude mixture control spare respectively with backplate main part swing joint to correspond the height of adjusting each lamp plate. Through the structure, the backlight module can enable each lamp plate to be located on the same plane through the height of each lamp plate adjusted by the height adjusting piece, the problem of height difference of the lamp plates is eliminated, and a better lamp plate 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, the rapid development of display technology has LED Mini LED displays to be paid attention by all parties, 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.
The cost of the lamp panel is also due to the manufacturing difficulty, the larger the lamp panel is, the lower the manufacturing yield is, the higher the manufacturing difficulty is, so the combined and spliced lamp panel also becomes an important direction for the research in the industry.
However, in the splicing process, height differences are easily generated between a plurality of lamp panels due to production or assembly process problems, but the splicing effect is general due to the conventional fixing method.
Disclosure of Invention
The application provides a backlight unit and display device to solve the problem that the difference in height appears easily between a plurality of lamp plates in the backlight unit.
In order to solve the technical problem, the application provides a backlight unit, backlight unit includes backplate main part, a plurality of lamp plates, and a plurality of lamp plates set up in the same one side of backplate main part, and backlight unit still includes a plurality of altitude mixture control spares, and each altitude mixture control spare corresponds and fixed the setting with each corner that each lamp plate is close to one side of backplate main part respectively, but each altitude mixture control spare respectively with backplate main part swing joint to correspond the height of adjusting each lamp plate.
The lamp panel is provided with a backboard main body, wherein connecting pieces are fixedly arranged at corners of one side of each lamp panel close to the backboard main body, and each connecting piece corresponds to each height adjusting piece one by one; and the position that the backplate main part corresponds each connecting piece is formed with a plurality of first through-holes, and a plurality of connecting pieces of each lamp plate run through the first through-hole that corresponds in the backplate main part, with the high regulating part fixed connection that corresponds.
The height adjusting piece comprises an adjusting stud and a nut, 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; a second through hole is formed in 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 adjusting stud is rotated by the threads to adjust the relative height between the adjusting stud and the first through hole until the preset height is reached, and the adjusting stud is fixed by the threaded rotating nut.
Wherein, the connecting piece includes the bolt, and the pole portion of bolt and one side thread tightening of lamp plate, the head of bolt pass the second through-hole and adjust the double-screw bolt block fixed.
Wherein, connecting piece and the lamp plate integrated into one piece that corresponds, the one end that the lamp plate that corresponds was kept away from to the connecting piece 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 part and a concave limiting part; each lamp panel comprises a first side face, a second side face, a third side face and a fourth side face which are sequentially vertical and adjacent to each other, wherein the first side face and the third side face are parallel and opposite to each other, and the second side face and the fourth side face are vertical and opposite to each other; the lamp panel comprises a lamp panel body, a first side face and a second side face of the lamp panel body are arranged on the lamp panel body, a concave limiting part is arranged on the first side face and the second side face of the lamp panel body, a convex limiting part is correspondingly arranged on the third side face and the fourth side face of the lamp panel body, and therefore the shape of the convex limiting part on the lamp panel body is matched with that of the concave limiting part on the adjacent lamp panel body.
The concave limiting part comprises a movable block, a concave block and an elastic part; the convex limiting part comprises a base and a convex part; one end of each elastic piece is fixedly connected with the corresponding lamp panel, the other end of each elastic piece is fixedly connected with the corresponding movable block, one side, far away from the elastic pieces, of each movable block is attached and fixedly provided with a concave block, a concave groove is formed in one side, far away from the corresponding concave block, and the opening of each concave groove deviates from the corresponding movable block; one side of the base is attached to and fixedly arranged with the corresponding lamp panel, the other side of the base is attached to and fixedly arranged with the protruding portion, and the protruding portion deviates 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.
Wherein, the concave piece of spill locating part is transparent concave piece, and the base of convex locating part is the lamp strip, and the bellying is the lamp pearl, and the lamp strip still is connected with the lamp pearl electricity.
Wherein, the side of the concave block, which faces away from the movable block, is coated with a reflective coating.
In order to solve the above technical problem, the present application provides a display device, which includes a liquid crystal panel, a frame, a film 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;
wherein, backlight unit includes any one backlight unit of above-mentioned.
The back plate main body of the backlight module comprises a first part and a second part which are mutually connected, 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 a second mounting frame; the first part is clamped in the second mounting frame to fix the frame and the backlight module.
The beneficial effects of the application are; be different from prior art's condition, the backlight unit of this application includes the backplate main part, a plurality of lamp plates and a plurality of altitude mixture control spare, a plurality of lamp plates set up in the same one side of backplate main part, each altitude mixture control spare corresponds and fixed the setting with each corner that each lamp plate is close to one side of backplate main part respectively, each altitude mixture control spare respectively with backplate main part swing joint, in order to correspond the height of adjusting each lamp plate, thereby highly make each lamp plate be located the coplanar through adjusting each lamp plate, eliminate the difference in height problem between lamp plates, obtain better lamp plate concatenation effect.
Drawings
Fig. 1 is a schematic partial structure diagram of a backlight module according to a first embodiment of the disclosure;
FIG. 2 is a schematic top view of the backlight module shown in FIG. 1;
FIG. 3 is a schematic diagram of a second through-hole 1211 of the present application scenario;
FIG. 4 is a schematic top view of a partial structure of the backlight module 100 according to an embodiment;
FIG. 5 is a schematic diagram of a convex limiting element and a concave limiting element;
fig. 6 is a schematic partial structure diagram of a backlight module according to a second embodiment of the present disclosure;
FIG. 7 is a schematic structural diagram of an embodiment of a display device provided in the present application;
fig. 8 is an exploded view of the display device of fig. 7.
Description of the reference numerals:
100, a backlight module; 110, a back plate body; 111, a first part; 112, a second portion; 1101, a first via hole; 120, a height adjustment member; 121, adjusting the stud; 1211, a second through hole; 1212, a first step hole; 1213, second stepped holes; 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 connecting piece; 140, a limiting mechanism; 141, a concave limiting member; 1411, an elastic member; 1412, a movable block; 1413, concave block; 1414, a concave groove; 1415, a housing; 142, a convex limit piece; 1421, a base; 1422, a boss; 200, a display device; 210, a frame; 211, right angle pieces; 220, a second mounting frame; 230, a liquid crystal panel; 240, a diaphragm assembly.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
It should be noted that if directional indications (such as upper, lower, left, right, front, rear, 8230; \8230;) are referred to in the embodiments of the present application, the directional indications are only used for explaining the relative positional relationship between the components in a specific posture (as shown in the attached drawings), the motion situation, etc., 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 relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.
Referring to fig. 1-2, fig. 1 is a schematic partial structure diagram of a backlight module according to a first embodiment of the present disclosure, and fig. 2 is a schematic top view structure diagram of the backlight module according to the embodiment of fig. 1. The present embodiment is described by taking the connecting member including a bolt as an example.
The backlight module 100 of the embodiment of the application includes a back plate main body 110, a plurality of lamp panels 130, and a plurality of height adjusters 120. The back plate main body 110 is used for supporting the whole 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, and the like, and may be specifically set based on actual requirements, which is not limited herein.
The plurality of lamp panels 130 are disposed at the same side of the backplane body 110, and each of the height adjusting members 120 corresponds to and is fixedly disposed at each corner of one side of each of the lamp panels 130 close to the backplane body 110.
Each height adjusting member 120 is movably connected to the back panel body 110 to adjust the height of each lamp panel 130.
The plurality of height adjusters 120 may include one or more of a screw adjuster, a piston adjuster, a cylinder adjuster, a snap adjuster, and the like, which are not limited herein. Height between lamp plate 130 and the backplate main part 110 that corresponds can be adjusted to carry out the altitude mixture control spare through altitude mixture control spare 120 to make each lamp plate 130 be located the coplanar through the height of adjusting each lamp plate 130, eliminate the problem of lamp plate difference in height.
Through the structure, the backlight unit of this embodiment includes the backplate main part, a plurality of lamp plates and a plurality of altitude mixture control spare, a plurality of lamp plates set up in the same one side of backplate main part, each altitude mixture control spare corresponds and fixed the setting with each corner that each lamp plate is close to one side of backplate main part respectively, each altitude mixture control spare respectively with backplate main part swing joint, with the height of corresponding each lamp plate of adjusting, thereby highly make each lamp plate be located the coplanar through adjusting each lamp plate, eliminate the difference in height problem between the lamp plate, obtain better lamp plate concatenation effect.
In other embodiments, the lamp panels 130 are fixedly provided with connecting members 135 at each corner of one side close to the back panel main body 110, and the connecting members 135 correspond to the height adjusting members 120 one to one, that is, the number of the connecting members 135 in the backlight module 100 is the same as the number of the height adjusting members 120, and the positions of the connecting members are corresponding.
In a specific application scenario, when the backlight module 100 includes 20 lamp panels 130, four corners of one side of each lamp panel 130 may be respectively provided with one connecting member 135, that is, the number of the connecting members 135 in the whole backlight module 100 is 80, the number of the height adjusting members 120 in the whole backlight module 100 is also 80, and the position of each height adjusting member 120 corresponds to the positions of the connecting members 135 at four corners of the lamp panel 130.
A plurality of first through holes 1101 are formed in positions of the backplane main body 110 corresponding to the connecting pieces 135, that is, the number and the positions of the first through holes 1101 on the backplane main body 110 also correspond to the connecting pieces 135 fixedly arranged on one side of the lamp panels 130 one by one, so that the lamp panels 130 penetrate through the corresponding first through holes 1101 on the backplane main body 110 through the connecting pieces 135, and are fixedly connected with the corresponding height adjusting pieces 120 to be fixed with the backplane main body 110. That is, the connecting member 135 of the lamp panels 130 is disposed on one side of the backboard main body 100, the corresponding height adjusting member 120 is disposed on the other side of the backboard main body 100, the backboard main body 100 is correspondingly provided with the first through hole 1101, the connecting member 135 of the lamp panels 130 passes through the first through hole 1101 and is fixedly connected with the height adjusting member 120, so that the heights between the corresponding lamp panels 130 and the backboard main body 110 are adjusted through the height adjusting member 120, and thus the lamp panels 130 are located on the same plane by adjusting the heights of the lamp panels 130, and the problem of height difference between the lamp panels 130 is solved.
In other embodiments, the height adjuster 120 may include an adjustment stud 121, an outer wall of the adjustment stud 121 being threadedly coupled to an inner wall of the corresponding first through hole 1101, and a nut 122, the nut 122 being threadedly coupled to an outer wall of the adjustment stud 121. That is, the diameter of the adjusting stud 121 is matched with the diameter 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 nut 122 has a diameter sized to match the diameter of the adjustment stud 121 such that the nut 122 is threadably coupled to the outer wall of the adjustment stud 121. The nut 122 has a diameter dimension 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.
A second through hole 1211 is formed on the adjusting stud 122, and one end of the connector 135, which is far away from the lamp panel 130, passes through the second through hole 1211 and is fastened and fixed with 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 communicated with each other, the first stepped hole 1212 is disposed near the backplane body 110, and a projection size of the first stepped hole 1213 on the lamp panel 130 is smaller than a projection size of an end of the connector 135 that is away from the lamp panel 130 on the lamp panel 130, so that the end of the connector 135 that is away from the lamp panel 130 can be fixed by engaging the first stepped hole 1213 with the adjusting stud 121.
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 application scenario.
The diameter of each position of the second through hole 1211 is the same, and the projection size of the second through hole 1211 on the lamp panel 130 is smaller than the projection size of the end of the connector 135 away from the lamp panel 130 on the lamp panel 130, so that the end of the connector 135 away from the lamp panel 130 can be fastened and fixed with the adjusting stud 121 through the second through hole 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 to a preset height, and the adjusting stud 121 is fixed by the screwed nut 122. The preset height can be set according to actual requirements, and is not limited herein.
In this embodiment, through the threaded connection between adjusting stud 121 and first through-hole 1101, the screw thread is rotated to adjust the relative Z-axis height between adjusting stud 121 and first through-hole 1101 until the preset height, so that the height of lamp panel 130 is adjusted to the preset height by connecting piece 135 fixedly connected with adjusting stud 121, and then nut 122 is screwed to fix adjusting stud 121, thereby completing the height adjustment of 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 adjust the height of the lamp panel 130.
In other embodiments, the connecting member 135 may include a bolt, a shaft of the bolt is screwed to one side of the lamp panel 130, and a head of the bolt passes through the second through hole 1211 to be fastened to the adjusting stud 121.
Wherein, the outer wall of the rod portion of the bolt can be screwed with the inner wall of the second through hole 1211.
In other embodiments, the backlight module 100 further includes: a limiting mechanism. Referring to fig. 4, fig. 4 is a schematic top view of a partial structure of the backlight module 100 according to an embodiment.
The limiting mechanism 140 of the present embodiment includes a male limiting member 142 and a female limiting member 141. That is, the convex limiting member 142 has a convex structure, and the concave limiting member 141 has a concave structure.
Each lamp plate 130 includes first side 131, second side 132, third side 133 and fourth side 134 that perpendicular and adjacent setting in proper order, and the side all around of lamp plate 130 promptly, first side 131 is parallel and relative setting with third side 133, and second side 132 is perpendicular and relative setting with fourth side 134.
The first side 131 and the second side 132 of each lamp panel 130 are provided with a concave limiting member 141, and the third side 133 and the fourth side 134 of each lamp panel 130 are correspondingly provided with a convex limiting member 142, so that the convex limiting member 142 on each lamp panel 130 and the concave limiting member 141 on the adjacent lamp panel 130 are matched in shape.
Through the above arrangement, convex locating part 142 and concave locating part 141 that can make each lamp plate 130 pass through its four sides carry out the block with concave locating part 141 and convex locating part 142 that correspond on the adjacent lamp plate 130 all around respectively, thereby when making adjacent lamp plate 130 not be in same level, can observe whether convex locating part 142 exposes or partially exposes in the outside of concave locating part 141, thereby be convenient for judge whether parallel and level of height of each lamp plate 130, when not parallel and level, can adjust the height of lamp plate 130 through height adjusting part 120, make convex locating part 142 imbed completely in concave locating part 141, realize the high parallel and level of adjacent lamp plate 130.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a convex limiting element and a concave limiting element.
In other embodiments, the concave limiting member 141 includes a movable block 1412, a concave block 1413, and an elastic member 1411; the convex position-limiting element 142 includes a base 1421 and a protrusion 1422.
In a specific application scenario, one end of each elastic piece 1411 is fixedly connected with the corresponding lamp panel 130, the other end of each elastic piece 1411 is fixedly connected with the corresponding movable block 1412, one side of each movable block 1412, which is far away from the corresponding elastic piece 1411, is attached to and fixedly provided with a concave block 1413, a concave groove 1414 is formed on one side of each concave block 1413, and an opening of the concave groove 1414 on the corresponding concave block 1413 is far away from the corresponding movable block 1412.
In another specific application scenario, the concave limiting member 141 further includes a housing 1415. One side of the outer wall of the housing 1415 is fixed and attached to the corresponding lamp panel 130, the inner wall of the housing 1415, which corresponds to the one side of the outer wall, is fixedly connected to one end of the elastic member 1411, the other end of the elastic member 1411 is fixedly connected to the movable block 1412, wherein the movable block 1412 is in slidable contact with the inner wall of the housing 1415, a concave block 1413 is attached and fixedly disposed to one side of the movable block 1412, which is far away from the elastic member 1411, a concave groove 1414 is formed on one side of the concave block 1413, and an opening of the concave groove 1414 on the concave block 1413 is far away from the movable block 1412.
Wherein, lamp plate 130 can be prepared by printed circuit board and form, when the easy flesh thermal energy of printed circuit board, then carry out the structure of concatenation to many lamp plates 130, during the inflation, printed circuit board dies the lamp because mutual extrusion easily, and this problem of solution that elastic component 1411 in this embodiment utilizes its elasticity can be better, when lamp plate 130 inflation, movable block 1412 can be at the cavity internalization of shell 1415 under the effect of lamp plate 130 pressure, prevent that printed circuit board from directly receiving great extrusion force and damaging, improve the reliability and the stability of lamp plate 130, and then improve backlight unit 100's reliability and stability.
One side of the base 1421 of the convex limiting member 142 is attached to and fixedly disposed on the corresponding lamp panel 130, the other side of the base 1421 is attached to and fixedly disposed on the protrusion 1422, and the protrusion 1422 deviates from the base 1421 and is protruded.
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 engaged with the concave groove 1414 of the concave limiting member 141 for limiting, so that when the adjacent lamp panels 130 are not at the same horizontal height, it can be observed whether the convex portion 1422 is exposed or partially exposed outside the concave groove 1414, thereby conveniently judging whether the heights of the lamp panels 130 are parallel and level, when the heights of the lamp panels 130 are not parallel and level, 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 parallel and level 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 bead, and the light bar is further electrically connected to the light bead to make the light bead emit light. Preferably, the housing 1415 is also a transparent housing.
Wherein, backlight unit 100's lamp plate part is spliced by many lamp plates 130 when forming, two adjacent lamp plate 130 concatenations can have a concatenation seam, when lamp plate 130 is luminous, the concatenation seam leads to the regional light of concatenation seam inhomogeneous easily, influence backlight unit's luminous efficacy, and lamp pearl in this embodiment is located concatenation seam position department, can carry out the light filling to concatenation seam position department, solve the problem of concatenation seam, and is concrete, spill piece 1413 is transparent material for transparent spill piece at least part, allow light to pass through. Thereby improve the luminance of concatenation seam, avoid the inhomogeneous problem of light in concatenation seam region, improve the regional light degree of consistency of concatenation seam.
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 in the figures), preferably, the inner wall of the concave groove 1414 is coated with a reflective coating for reflecting the light of the lamp bead, so as to enhance the light utilization rate, and to make the light exit from the gap to the panel, thereby further improving the light uniformity in the splicing seam region.
In other embodiments, the connectors 135 may also be integrally formed with the corresponding lamp panel 130. Referring to fig. 6, fig. 6 is a schematic partial structure diagram of a backlight module according to a second embodiment of the present disclosure. The features of this 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, and the positional relationship between the connecting member and the height adjusting member, are the same as those of the above embodiments, and are not described herein again.
The connecting piece 135 of this embodiment and the lamp plate 130 integrated into one piece that corresponds, connecting piece 135 are the buckle setting, and connecting piece 135 is kept away from the one end that corresponds lamp plate 130 and is passed second through-hole 1211 and adjust stud 121 block fixed.
Wherein, the one end that corresponding lamp plate 130 was kept away from to connecting piece 135 can be the wedge to can adjust the relative fastening of double-screw bolt 121 and the lamp plate 130 that corresponds, prevent not hard up.
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 structural diagram of an explosion 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 film assembly 240 and a backlight module 100; the entire structure of the display device 200 is a direct-type structure.
The liquid crystal panel 230 is mounted in a first mounting frame (not labeled) on one side of the frame 210, the backlight module 100 is mounted in a second mounting frame 220 on the other side of the frame 210, and the film assembly 240 is disposed between the backlight module 100 and the frame 210. The membrane assembly 240 serves to improve the uniformity of the surface light source.
The backlight module 100 includes the backlight module 100 of any of the above embodiments.
Through the structure, each lamp plate of the backlight module in the display device of the embodiment can adjust the height of each lamp plate through the height adjusting piece, so that each lamp plate is located on the same plane through adjusting the height of each lamp plate, the problem of height difference of the lamp plates is eliminated, a better lamp plate splicing effect is obtained, and the reliability and the stability of the display device are improved.
In other embodiments, the backlight module 100 is designed in a stepped manner, 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, and 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 members 211 are formed on the other side of the frame 210, the right-angle members 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 above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (10)
1. The utility model provides a backlight module, backlight module includes backplate main part, a plurality of lamp plates set up in same one side of backplate main part, its characterized in that, backlight module still includes a plurality of altitude mixture control spares, each altitude mixture control spare respectively with each the lamp plate is close to each corner of one side of backplate main part corresponds and fixed the setting, each altitude mixture control spare respectively with backplate main part swing joint to correspond the height of adjusting each the lamp plate.
2. The backlight module according to claim 1,
connecting pieces are fixedly arranged at each corner of one side, close to the backboard main body, of each lamp panel, and each connecting piece corresponds to each height adjusting piece one by one;
and a plurality of first through holes are formed in the positions, corresponding to the connecting pieces, of the backboard main body, and the connecting pieces of the lamp panels penetrate through the corresponding first through holes in the backboard main body and are fixedly connected with the corresponding height adjusting pieces.
3. The backlight module according to claim 1, wherein the height adjuster comprises an adjusting stud and a nut, 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;
a second through hole is formed in 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 adjusting stud is rotated by threads to adjust the relative height between the adjusting stud and the first through hole until the relative height is preset, and the adjusting stud is fixed by rotating the nut by the threads.
4. The backlight module according to claim 3, wherein the connecting member comprises a bolt, a rod of the bolt is fixed to one side of the lamp panel through threads, and a head of the bolt passes through the second through hole and is fastened and fixed to the adjusting stud.
5. The backlight module according to claim 3, wherein the connecting member is integrally formed with the corresponding lamp panel, and one end of the connecting member, which is far away from the corresponding lamp panel, passes through the second through hole and is fastened and fixed with the adjusting stud.
6. A backlight module according to any one of claims 1-5, characterized in that the backlight module further comprises: the limiting mechanism comprises a convex limiting part and a concave limiting part;
each lamp panel comprises a first side surface, a second side surface, a third side surface and a fourth side surface which are sequentially vertical and adjacent to each other, the first side surface and the third side surface are parallel and opposite to each other, and the second side surface and the fourth side surface are vertical and opposite to each other;
the lamp panel comprises a first side surface and a second side surface, wherein the first side surface and the second side surface of each lamp panel are provided with concave limiting parts, and the third side surface and the fourth side surface of each lamp panel are correspondingly provided with convex limiting parts, so that the convex limiting parts on the lamp panels and the concave limiting parts on the adjacent lamp panels are matched in shape.
7. The backlight module according to claim 6, wherein the concave limiting member comprises a movable block, a concave block and an elastic member; the convex limiting part comprises a base and a bulge;
one end of each elastic piece is fixedly connected with the corresponding lamp panel, the other end of each elastic piece is fixedly connected with the corresponding movable block, one side, far away from the elastic pieces, of each movable block is attached to and fixedly provided with the corresponding concave block, a concave groove is formed in one side, far away from the corresponding concave block, and the opening of the concave groove deviates from the corresponding movable block;
one side of the base is attached to and fixedly arranged with the corresponding lamp panel, the other side of the base is attached to and fixedly arranged with the protruding portion, and the protruding portion deviates 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.
8. The backlight module according to claim 7,
the concave block of spill locating part is transparent concave block, the base of convex locating part is the lamp strip, the bellying is the lamp pearl, the lamp strip still with the lamp pearl electricity is connected.
9. A display device comprises a liquid crystal panel, a frame, a membrane assembly and a backlight module; the liquid crystal display panel is arranged in a first installation frame at one side of the frame, the backlight module is arranged in a second installation 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 as claimed in any one of claims 1-8.
10. The display device according to claim 9,
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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| Publication number | Publication date |
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| CN115327813B (en) | 2023-07-18 |
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