CN110187556B - Quantum dot backlight source - Google Patents
Quantum dot backlight source Download PDFInfo
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- CN110187556B CN110187556B CN201910362986.XA CN201910362986A CN110187556B CN 110187556 B CN110187556 B CN 110187556B CN 201910362986 A CN201910362986 A CN 201910362986A CN 110187556 B CN110187556 B CN 110187556B
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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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
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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
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
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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 invention discloses a quantum dot backlight source, which comprises a bottom shell, an optical processing unit, a face frame and a light source unit, wherein the bottom shell comprises a bottom wall, two first side walls which are opposite in the front and back direction and two second side walls which are opposite in the left and right direction, and light inlet windows are arranged on the second side walls; the optical processing unit is arranged in the bottom shell and comprises a reflecting plate, a light guide plate and an optical film which are sequentially stacked from bottom to top, and the light guide plate is provided with a light inlet side face opposite to the light inlet window; the surface frame is connected to the bottom shell in a buckling mode, the light source unit comprises a base, an LED light bar and a quantum rod, the base is detachably connected to the outer side of the second side wall, an accommodating groove is formed in one side face, facing the second side wall, of the base, the LED light bar and the quantum rod are installed in the accommodating groove, and the quantum rod is located between the LED light bar and the light incidence side face of the light guide plate. The quantum dot backlight source provided by the embodiment of the invention is convenient to assemble, high in efficiency and convenient to maintain.
Description
Technical Field
The invention relates to a display device, in particular to a quantum dot backlight source.
Background
A Liquid Crystal Display (LCD) is one of the most widely used display devices, and a backlight module is one of the key components in the LCD. The traditional backlight module realizes the effect of white light by mixing fluorescent powder on an LED blue light source, and the color effect of the simple scheme is not good.
In recent years, pursuit of color in the display industry is increasingly promoted, and particularly in the field of liquid crystal display, the appearance of quantum dot technology makes the promotion of color become practical, quantum dots are a nano-grade material capable of emitting light, quantum dot particles with different diameters can emit different pure color light under the excitation of blue LEDs, and the mixing of three primary colors of red, green and blue can be realized, so that the color performance is better.
In the related art, a lateral quantum dot backlight generally includes a bottom plate, a frame, a light source, a quantum rod, a reflective plate stacked on the bottom plate, a light guide plate, and an optical film, where the frame is fixed on the bottom plate, the light source is arranged on the inner side wall of the frame, and the quantum rod is fixed on the inner side of the light source.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention aims to provide a quantum dot backlight source.
To achieve the above object, a quantum dot backlight according to an embodiment of the present invention includes:
the bottom shell comprises a bottom wall, two first side walls opposite to each other in the front and back direction and two second side walls opposite to each other in the left and right direction, wherein the second side walls are provided with light inlet windows penetrating through the second side walls in the left and right direction, and the light inlet windows extend in the front and back direction;
the optical processing unit is arranged in the bottom shell and comprises a reflecting plate, a light guide plate and an optical film which are sequentially stacked from bottom to top, and the light guide plate is provided with a light inlet side face opposite to the light inlet window;
the face frame is connected to the bottom shell in a buckled mode so as to tightly press and fix the optical processing unit in the bottom shell;
the LED light source comprises a light source unit, wherein the light source unit comprises a base, an LED light bar and a quantum rod, the base is detachably connected to the outer side of the second side wall, an accommodating groove is formed in one side face, facing the second side wall, of the base and extends in the front-back direction, the LED light bar and the quantum rod are installed in the accommodating groove, and the quantum rod is located between the LED light bar and the light incident side face of the light guide plate.
According to the quantum dot backlight provided by the embodiment of the invention, the base, the LED lamp strip and the quantum rod are combined into the independent light source unit, and the light source unit is detachably connected to the outer side of the second side wall of the base through the base. In addition, when breaking down, can disassemble light source unit from the drain pan, maintain LED lamp strip or quantum stick in the light source unit again, consequently, it is very convenient to maintain to drain pan, face frame and optical processing unit need not disassemble, can not cause any harmful effects to drain pan, face frame and optical processing unit, ensure that the backlight functional performance after the maintenance is still reliable and stable.
In addition, the quantum dot backlight source according to the above embodiment of the present invention may further have the following additional technical features:
according to one embodiment of the invention, the corner inside the bottom shell is provided with an L-shaped corner platform, the L-shaped corner platform comprises a first side baffle part and a second side baffle part perpendicular to the first side baffle part, a right-angle groove is formed between the first side baffle part and the second side wall part, and the corner of the optical processing unit is positioned inside the bottom shell through the right-angle groove.
According to one embodiment of the invention, the accommodating groove is respectively provided with clamping parts on two opposite side walls in the front-back direction, and the clamping parts are provided with bayonets;
one end of the quantum rod is clamped on the bayonet of one of the two clamping parts, and the other end of the quantum rod is clamped on the bayonet of the other of the two clamping parts.
According to an embodiment of the present invention, a part of the quantum rod protrudes from the side surface of the base, a clamping groove penetrating the light entrance window is formed on an outer surface of the second side wall, and the part of the quantum rod protruding from the side surface of the base is clamped in the clamping groove.
According to one embodiment of the invention, a first threaded hole and a second threaded hole are formed in the outer surface of the second side wall, the first threaded hole is located on one side of the light inlet window in the front-back direction, and the second threaded hole is located on the other side of the light inlet window in the front-back direction;
the base is provided with a first through hole and a second through hole which penetrate through the side surface of the base along the left-right direction, the first through hole is positioned on one side of the containing groove along the front-back direction, and the second through hole is positioned on the other side of the containing groove along the front-back direction;
A first screw penetrates through the first through hole and is in threaded connection with the first threaded hole, a second screw penetrates through the second through hole and is in threaded connection with the second threaded hole.
According to an embodiment of the present invention, the outer surface of the second side wall is further provided with a first positioning hole and a second positioning hole, the first positioning hole is arranged adjacent to the first threaded hole, and the second positioning hole is arranged adjacent to the second threaded hole;
the side face of the base is provided with a first positioning protrusion and a second positioning protrusion, the first positioning protrusion is matched with the first positioning hole, and the second positioning protrusion is matched with the second positioning hole so as to position the relative position of the base and the bottom shell.
According to one embodiment of the invention, the face frame is provided with blocking edges opposite in the front-back direction and an inverted buckle adjacent to the blocking edges, the blocking edges extend downwards and are blocked at the inner side of the first side wall, and the first side wall is provided with a clamping hole buckled with the inverted buckle.
According to one embodiment of the invention, gaps are formed between the clamping part and two side walls opposite to the accommodating groove in the vertical direction;
The light source unit further comprises a first baffle and a second baffle, the first baffle extends in the front-back direction, the first baffle is located above the clamping portion and clamped in the gap, and the second baffle is located below the clamping portion and clamped in the gap to shield light of the LED lamp strip.
According to an embodiment of the present invention, the width dimension of the first and second baffle plates in the left-right direction is equal to the depth dimension of the accommodating groove in the left-right direction.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a quantum dot backlight according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken at B-B of FIG. 1;
FIG. 4 is a schematic structural diagram of a light source unit and a bottom case of a quantum dot backlight source according to an embodiment of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4 at A;
FIG. 6 is an exploded view of a quantum dot backlight according to an embodiment of the invention;
FIG. 7 is an exploded view of a light source unit in a quantum dot backlight according to an embodiment of the invention;
FIG. 8 is a schematic structural diagram of a bottom chassis in a quantum dot backlight according to an embodiment of the invention;
fig. 9 is a schematic structural diagram of a middle frame of a quantum dot backlight source according to an embodiment of the invention.
Reference numerals:
a bottom case 10;
a bottom wall 101;
a first sidewall 102;
a card hole 1021;
a second side wall 103;
a first threaded hole 1031;
a first positioning hole 1032;
a light entrance window H10;
a card slot H11;
an L-shaped corner stand 104;
a first side barrier 1041;
a second side stop 1042;
right-angle slots 1043;
an optical processing unit 20;
a reflection plate 201;
a light guide plate 202;
an optical film 203;
a brightness enhancement film 2031;
a diffuse reflection film 2032;
a polarizing film 2033;
a face frame 30;
a retaining edge 301;
an inverted button 302;
a light source unit 40;
a base 401;
a housing groove H401;
a first via 4011;
a first positioning projection 4012;
an LED light bar 402;
a quantum rod 403;
A catch 404;
a bayonet 4041;
a gap X401;
a first baffle 405;
a second shutter 406.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the present invention and should not be construed as limiting the present invention, and all other embodiments that can be obtained by one skilled in the art based on the embodiments of the present invention without inventive efforts shall fall within the scope of protection of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "circumferential," "radial," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The quantum dot backlight according to an embodiment of the present invention is described in detail below with reference to the drawings.
Referring to fig. 1 to 9, the quantum dot backlight according to the embodiment of the present invention includes a bottom case 10, an optical processing unit 20, a face frame 30, and a light source unit 40.
Specifically, the bottom case 10 includes a bottom wall 101, two front and back opposite first side walls 102 and two left and right opposite second side walls 103, a light entrance window H10 is disposed on the second side wall 103 and penetrates through the second side wall 103 along the left and right direction, the light entrance window H10 extends along the front and back direction, that is, the light entrance window H10 on the second side wall 103 is in a strip shape, and the light entrance window H10 is used for allowing light of the light source to enter.
The optical processing unit 20 is disposed in the bottom case 10, the optical processing unit 20 includes a reflective plate 201, a light guide plate 202, and an optical film 203 stacked in sequence from bottom to top, the light guide plate 202 has a light incident side surface opposite to the light incident window H10, the light guide plate 202 further has a light incident top surface and a backlight bottom surface opposite to the light incident top surface, and the light incident side surface is located between the light incident top surface and the backlight bottom surface. The optical film 203 may include a brightness enhancement film 2031, a diffuse reflection film 2032, a polarizing film 2033, and the like.
The face frame 30 is snap-connected to the bottom case 10 to press and fix the optical processing unit 20 inside the bottom case 10. During assembly, the reflective plate 201, the light guide plate 202 and the optical film 203 are sequentially stacked in the bottom case 10, and the face frame 30 is fastened to the bottom case 10, so that the reflective plate 201, the light guide plate 202 and the optical film 203 are pressed and fixed in the bottom case 10 by the face frame 30, thereby ensuring that the reflective plate 201, the light guide plate 202 and the optical film 203 are tightly attached to each other, and improving the optical effect and the structural stability.
The light source unit 40 includes a base 401, an LED light bar 402, and a quantum rod 403, wherein the base 401 is detachably connected to an outer side of the second sidewall 103, a receiving groove H401 is formed in a side surface of the base 401 facing the second sidewall 103, the receiving groove H401 extends in a front-back direction, the LED light bar 402 and the quantum rod 403 are disposed in the receiving groove H401, and the quantum rod 403 is located between the LED light bar 402 and the light incident side surface of the light guide plate 202.
That is to say, the light source unit 40 mainly includes a base 401, an LED light bar 402 and a quantum rod 403, the LED light bar 402 and the quantum rod 403 are installed in the receiving groove H401 on the side of the base 401 to form an integral body, and during assembly, the base 401 is detachably connected to the second outer side of the bottom case 10 to complete assembly. After light emitted from the LED light bar 402 is optically converted by the quantum rod 403, the light is input into the light guide plate 202 from the light incident side of the light guide plate 202, the light entering the light guide plate 202 is reflected by the reflective plate 201 and then exits from the light emergent top of the light guide plate 202, and enters the optical film 203, and then exits after being optically processed by the optical film 203.
According to the quantum dot backlight provided by the embodiment of the invention, the base 401, the LED light bar 402 and the quantum rod 403 are combined into the independent light source unit 40, and the light source unit 40 is detachably connected to the outer side of the second side wall 103 of the base through the base 401, so that, during assembly, the base 401, the LED light bar 402 and the quantum rod 403 are assembled to form the light source unit 40, the bottom case 10, the face frame 30 and the optical processing unit 20 are assembled into a whole, and finally, the light source unit 40 is assembled to the outer side of the bottom case 10. In addition, when the backlight source is applied to the display device, the lamp beads on the LED lamp strip 402 may be burned out in some cases, for example, during long-time operation. Quantum stick 403 generally forms through encapsulating the quantum dot material in the glass pipe, and the glass pipe is damaged easily, for example receives the impact of external force, perhaps because the heat of LED lamp strip 402 release causes the expend with heat and contract with cold of interior structure easily, and then causes the extrusion to the glass pipe to and the expend with heat and contract with cold of glass pipe self etc. factor, and then lead to quantum stick 403 to damage. In the quantum dot backlight provided by the embodiment, when the LED light bar 402 or the quantum rod 403 fails, the light source unit 40 can be disassembled from the bottom case 10, and then the LED light bar 402 or the quantum rod 403 in the light source unit 40 is maintained, so that the maintenance is very convenient, and the bottom case 10, the face frame 30 and the optical processing unit 20 do not need to be disassembled, so that any adverse effect on the bottom case 10, the face frame 30 and the optical processing unit 20 is not caused, and the functional performance of the backlight after maintenance is still stable and reliable.
Referring to fig. 6 and 8, in an embodiment of the present invention, an L-shaped corner platform 104 is disposed at a corner in the bottom case 10, the L-shaped corner platform 104 includes a first side blocking portion 1041 and a second side blocking portion 1042 perpendicular to the first side blocking portion 1041, a right-angle slot 1043 is formed between the first side blocking portion 1041 and the second side wall 103, a corner of the optical processing unit 20 is positioned in the bottom case 10 through the right-angle slot 1043, in the example of fig. 6, the first side blocking portion 1041 is integrally formed with the first side wall 102, and the second side blocking portion 1042 is integrally formed with the second side wall 103.
That is to say, an L-shaped corner platform 104 is formed at each of four corners in the bottom case 10, and a right-angle groove 1043 is formed on each L-shaped corner platform 104, during assembly, the reflective film, the light guide plate 202, and the optical film 203 may be stacked in the bottom case 10, and the four corners of the reflective film, the light guide plate 202, and the optical film 203 are positioned by using the right-angle grooves 1043, that is, the four corners of the reflective film, the light guide plate 202, and the optical film 203 are clamped in the right-angle grooves 1043, which facilitates assembly of the optical processing unit 20, and simultaneously ensures that the structure is more stable and reliable after the optical processing unit 20 is assembled with the bottom case 10.
Referring to fig. 2, 5 and 7, in some embodiments of the invention, the accommodating groove H401 has two opposite side walls in the front-back direction respectively with a clamping portion 404, and the clamping portion 404 is provided with a clamping opening 4041. One end of the quantum rod 403 is clamped on the bayonet 4041 of one of the two clamping parts 404, and the other end of the quantum rod 403 is clamped on the bayonet 4041 of the other of the two clamping parts 404. In the example of fig. 7, the front side wall and the rear side wall of the receiving cavity H401 are respectively provided with a clamping portion 404, the clamping portions 404 are integrally formed with the base 401, and each clamping portion 404 is provided with a bayonet 4041, wherein the right side and the rear side of the bayonet 4041 on the clamping portion 404 of the front side wall of the receiving cavity H401 are open, and the right side and the front side of the bayonet 4041 on the clamping portion 404 of the rear side wall of the receiving cavity H401 are open.
In the assembling process, the LED light bar 402 is first mounted in the receiving groove H401, for example, the LED light bar 402 is fixed on the left side wall of the receiving groove H401 by means of bonding, fastening, and screws, and then one end of the quantum rod 403 is clamped into the bayonet 4041 of one clamping portion 404, and the other end of the quantum rod 403 is clamped into the bayonet 4041 of another clamping portion 404, so that the light source unit 40 can be assembled, and the assembly is convenient, and the quantum rod 403 can be conveniently replaced in the maintenance process.
Advantageously, both ends of the quantum rod 403 may be wrapped with a layer of buffer material, such as flexible colloid or foam, so that when being impacted by external force or expanded with heat or contracted with cold, the buffer material may be compressed, thereby playing a role of buffering, and to a certain extent, reducing the risk of damage to the quantum rod 403.
Referring to fig. 2 and 4 to 5, in an embodiment of the invention, a portion of the quantum rod 403 protrudes from the side surface of the base 401, a slot H11 penetrating the light entrance window H10 is disposed on an outer surface of the second sidewall 103, and the portion of the quantum rod 403 protruding from the side surface of the base 401 is clamped in the slot H11.
That is to say, when the base 401 is connected to the second side wall 103 of the bottom chassis 10, the portion of the quantum rod 403 protruding from the side surface of the base 401 is clamped in the clamping groove H11 on the second side wall 103, so on one hand, the quantum rod 403 can be reliably fixed, on the other hand, a portion of the quantum rod 403 is clamped in the clamping groove H11, it can be ensured that the relative position between the quantum rod 403 and the light entrance window H10 on the second side wall 103 is more accurate, the light of the LED light bar 402 can be converted by the quantum rod 403, and the converted light of the quantum rod 403 can be incident into the light guide plate 202 through the light entrance window H10, so as to improve the light conversion effect of the quantum rod 403.
Referring to fig. 5, in an embodiment of the present invention, the outer surface of the second side wall 103 is provided with a first screw hole 1031 and a second screw hole, the first screw hole 1031 is located at one side of the light entrance window H10 in the front-back direction, and the second screw hole 1031 is located at the other side of the light entrance window H10 in the front-back direction.
Be equipped with on base 401 along left right direction and run through to base 401 the first through-hole 4011 and the second through-hole of side, first through-hole 4011 is located holding tank H401 is along one side of fore-and-aft direction, the second through-hole is located holding tank H401 is along the opposite side of fore-and-aft direction.
Wear to be equipped with first screw in first through-hole 4011, first screw with first screw hole 1031 threaded connection, wear to be equipped with the second screw in the second through-hole, the second screw with second screw hole threaded connection.
That is, the base 401 is fixed to the bottom case 10 at both ends in the front-rear direction by a first screw and a second screw, respectively, so that the connection is firm and reliable, and the assembly is convenient.
Advantageously, the outer surface of the second side wall 103 is further provided with a first positioning hole 1032 and a second positioning hole, the first positioning hole 1032 being arranged adjacent to the first threaded hole 1031, and the second positioning hole being arranged adjacent to the second threaded hole.
During the assembly process, the side of the base 401 faces the second side wall 103 of the bottom case 10, the first positioning protrusions 4012 are aligned and inserted into the first positioning holes 1032 on the second side wall 103, and the second positioning protrusion is inserted into the second positioning hole on the second sidewall 103 in alignment, and finally, then, a first screw is threaded through the first through hole 4011 on the base 401 and then is connected with the first threaded hole 1031 on the second side wall 103, and a second screw is threaded with a second threaded hole on the second side wall 103 after passing through a second through hole on the base 401, so that, the assembly between the light source unit 40 and the bottom case 10 can be completed, the assembly is simple and convenient, and by using the first positioning protrusion 4012 to be matched with the first positioning hole 1032 and the second positioning protrusion to be matched with the second positioning hole, the relative position between the base 401 and the bottom case 10 can be more accurate, and the connection between the base 401 and the bottom case 10 is more secure and reliable.
Referring to fig. 3, 6 and 9, in an embodiment of the present invention, the face frame 30 has a blocking edge 301 opposite to each other in the front-back direction and a reverse buckle 302 adjacent to the blocking edge 301, the blocking edge 301 extends downward and blocks at the inner side of the first sidewall 102, and the first sidewall 102 is provided with a locking hole 1021 for locking with the reverse buckle 302.
That is to say, the surface frame 30 and the bottom case 10 are connected by the snap fit through the matching of the inverse buckle 302 and the clip hole 1021, the connection and the detachment are convenient, the assembly is convenient, and in addition, the blocking edge 301 is blocked at the inner side of the first sidewall 102 of the bottom case 10, so that the connection between the surface frame 30 and the bottom case 10 can be ensured to be more stable and reliable.
Referring to fig. 5 and 7, in some embodiments of the invention, a gap X401 is formed between the retaining portion 404 and two sidewalls of the accommodating groove H401 opposite to each other in the vertical direction.
The light source unit 40 further includes a first blocking plate 405 and a second blocking plate 406 extending in the front-back direction, the first blocking plate 405 is located above the clamping portion 404 and clamped in the gap X401, and the second blocking plate 406 is located below the clamping portion 404 and clamped in the gap X401 to block the light of the LED light bar 402.
That is to say, first baffle 405 and second baffle 406 are arranged relatively from top to bottom, and LED light bar 402 is located between first baffle 405 and second baffle 406, so that a part of light emitted by LED light bar 402 to first baffle 405 and second baffle 406 is shielded by first baffle 405 and second baffle 406, and then light can be prevented from leaking from the gap between base 401 and bottom case 10, and the effect of preventing light leakage is achieved. In addition, the first and second shutters 405 and 406 are directly inserted into the gap X401 between the retaining portion 404 and the sidewall of the receiving groove H401, which is convenient for assembly.
More advantageously, the width dimension of the first baffle 405 and the second baffle 406 in the left-right direction is equal to the depth dimension of the accommodating groove H401 in the left-right direction, so that a better shielding effect can be achieved.
In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (5)
1. A quantum dot backlight, comprising:
the bottom shell comprises a bottom wall, two first side walls opposite to each other in the front and back direction and two second side walls opposite to each other in the left and right direction, wherein the second side walls are provided with light inlet windows penetrating through the second side walls in the left and right direction, and the light inlet windows extend in the front and back direction;
the optical processing unit is arranged in the bottom shell and comprises a reflecting plate, a light guide plate and an optical film which are sequentially stacked from bottom to top, and the light guide plate is provided with a light inlet side face opposite to the light inlet window;
the face frame is connected to the bottom shell in a buckled mode so as to tightly press and fix the optical processing unit in the bottom shell;
the light source unit comprises a base, an LED lamp bar and a quantum rod, the base is detachably connected to the outer side of the second side wall, an accommodating groove is formed in one side face, facing the second side wall, of the base and extends in the front-back direction, the LED lamp bar and the quantum rod are installed in the accommodating groove, and the quantum rod is located between the LED lamp bar and the light incident side face of the light guide plate;
The two opposite side walls of the accommodating groove in the front-back direction are respectively provided with a clamping part, and the clamping parts are provided with bayonets; one end of the quantum rod is clamped on the bayonet of one of the two clamping parts, and the other end of the quantum rod is clamped on the bayonet of the other of the two clamping parts;
a part of the quantum rod protrudes from the side surface of the base, a clamping groove communicated with the light inlet window is formed in the outer surface of the second side wall, and the part protruding from the side surface of the base on the quantum rod is clamped in the clamping groove; two ends of the quantum rod are wrapped with a layer of buffer material;
a first threaded hole and a second threaded hole are formed in the outer surface of the second side wall, the first threaded hole is located on one side of the light inlet window in the front-back direction, and the second threaded hole is located on the other side of the light inlet window in the front-back direction;
the base is provided with a first through hole and a second through hole which penetrate through the side surface of the base along the left-right direction, the first through hole is positioned on one side of the containing groove along the front-back direction, and the second through hole is positioned on the other side of the containing groove along the front-back direction;
a first screw penetrates through the first through hole and is in threaded connection with the first threaded hole, a second screw penetrates through the second through hole and is in threaded connection with the second threaded hole;
Gaps are formed between the clamping part and two side walls opposite to the containing groove in the vertical direction;
the light source unit further comprises a first baffle and a second baffle, the first baffle extends in the front-back direction, the first baffle is located above the clamping portion and clamped in the gap, and the second baffle is located below the clamping portion and clamped in the gap to shield light of the LED lamp strip.
2. The quantum dot backlight source of claim 1, wherein an L-shaped corner platform is disposed at a corner of the bottom case, the L-shaped corner platform comprises a first side barrier portion and a second side barrier portion perpendicular to the first side barrier portion, a right-angle groove is formed between the first side barrier portion and the second side barrier portion, and a corner of the optical processing unit is positioned in the bottom case through the right-angle groove.
3. The quantum dot backlight source of claim 1, wherein the outer surface of the second sidewall is further provided with a first positioning hole and a second positioning hole, the first positioning hole is disposed adjacent to the first threaded hole, and the second positioning hole is disposed adjacent to the second threaded hole;
the side face of the base is provided with a first positioning protrusion and a second positioning protrusion, the first positioning protrusion is matched with the first positioning hole, and the second positioning protrusion is matched with the second positioning hole so as to position the relative position of the base and the bottom shell.
4. The quantum dot backlight source of claim 1, wherein the face frame has a blocking edge opposite to the front-back direction and an inverted buckle adjacent to the blocking edge, the blocking edge extends downward and blocks the inner side of the first sidewall, and the first sidewall is provided with a clamping hole buckled with the inverted buckle.
5. The quantum dot backlight according to claim 1, wherein a width dimension of the first and second baffles in the left-right direction is equal to a depth dimension of the receiving groove in the left-right direction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910362986.XA CN110187556B (en) | 2019-04-30 | 2019-04-30 | Quantum dot backlight source |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910362986.XA CN110187556B (en) | 2019-04-30 | 2019-04-30 | Quantum dot backlight source |
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| CN110187556B true CN110187556B (en) | 2022-06-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH10289606A (en) * | 1997-04-11 | 1998-10-27 | Toshiba Lighting & Technol Corp | Back light and liquid crystal display device therewith |
| CN102231022B (en) * | 2011-06-28 | 2013-04-17 | 深圳市华星光电技术有限公司 | Liquid crystal module |
| TWI436507B (en) * | 2011-08-05 | 2014-05-01 | Au Optronics Corp | Light emitting device and light source module |
| CN103032837B (en) * | 2012-12-14 | 2015-08-05 | 京东方科技集团股份有限公司 | A kind of back of the body frame, backlight and display device for installing backlight |
| CN105182607B (en) * | 2015-10-12 | 2018-05-18 | 武汉华星光电技术有限公司 | Backlight module and its glue frame construction |
| CN205581469U (en) * | 2016-04-12 | 2016-09-14 | 东莞轩朗实业有限公司 | Sideward backlight module and liquid crystal display device |
| CN205982921U (en) * | 2016-08-22 | 2017-02-22 | 苏州胜利精密制造科技股份有限公司 | Novel panel display structure |
| CN107664876A (en) * | 2017-10-25 | 2018-02-06 | 惠科股份有限公司 | A kind of backlight module and liquid crystal display device |
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Effective date of registration: 20210607 Address after: 518000 4th floor, no.10-5, Minsheng 1st Road, Baoyuan community, Shiyan street, Bao'an District, Shenzhen City, Guangdong Province Applicant after: Shenzhen saishida Technology Co.,Ltd. Address before: 518000 4th floor, building A1, Jiushun Industrial Park, liaokeng Minsheng 1st Road, Shiyan street, Bao'an District, Shenzhen City, Guangdong Province Applicant before: SHENZHEN SAN-STAR OPTOELECTRONICS TECHNOLOGY Co.,Ltd. |
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