CN110211488A - Quantum dot backlight and vehicle-carrying display screen with it - Google Patents
Quantum dot backlight and vehicle-carrying display screen with it Download PDFInfo
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- CN110211488A CN110211488A CN201910386071.2A CN201910386071A CN110211488A CN 110211488 A CN110211488 A CN 110211488A CN 201910386071 A CN201910386071 A CN 201910386071A CN 110211488 A CN110211488 A CN 110211488A
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
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Abstract
The invention discloses a kind of quantum dot backlight and with its vehicle-carrying display screen, wherein the quantum dot backlight, including bottom case, backlight assembly and surface frame, bottom case include bottom wall and side wall, and container is limited between bottom wall and side wall；Backlight assembly is arranged in container, and backlight assembly includes light guide plate, quantum rod and LED light bar, and light guide plate is located in container, and light guide plate includes light guide body, and at least side at left and right sides of light guide body is formed with expansion edge, and the lateral surface for expanding edge is equipped with fitting groove；Quantum rod is installed in fitting groove, and LED light bar includes substrate and multiple LED lamp beads that interval is located on substrate, and substrate is fixed to the lateral surface on expansion edge by fastener, and LED lamp bead is located in fitting groove and opposite with quantum rod；Surface frame is snapped connection with bottom case, and backlight assembly is pressed abd fixed in bottom case.The quantum dot backlight provided according to embodiments of the present invention, performance is more reliable and more stable, is particularly suitable for vehicle-carrying display screen.
Description
Technical field
The present invention relates to display screen more particularly to a kind of quantum dot backlight and with its display screen.
Background technique
With the development of automotive engineering and universal, people are higher and higher to the intelligent manipulation experience requirements of automobile, as a result,
The screen size of display equipment on automobile is also increasing, to be convenient to realize that the depth between user and automobile interacts, band
To the better driving experience of user and technology sense by.
Due to the influence of running car environment, when driving, Vehicular vibration, vehicle interior temperature etc. can all be made car-mounted display equipment
At influence, therefore, requirement of the car-mounted display equipment to stability, against shock, dust-proof etc. is higher.In the related technology vehicle-mounted
Display screen, including backlight and the display panel being located on backlight, and backlight is mainly by bottom plate, light guide plate, frame, LED
The composition such as lamp bar and quantum rod, light guide plate are located on bottom plate, and frame is fixed on bottom plate, and LED light bar is located at the inner sidewall of frame
On, quantum rod is fixed between LED light bar and the one side of light guide plate, the backlight of this structure, and structure built on the sand, uses
After long period, due to factors such as interior high temperature and vibrations, bottom case, face-piece etc. is caused to deform, LED light bar, light guide plate and quantum
Relative position may change between stick, and then influence backlight effect, stability and poor reliability.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is to propose a kind of quantum dot backlight.
It is another object of the present invention to propose a kind of vehicle-carrying display screen.
To achieve the above object, on the one hand, quantum dot backlight according to an embodiment of the present invention, comprising:
Bottom case, the bottom case include bottom wall and side wall, limit container between the bottom wall and the side wall；
Backlight assembly, the backlight assembly are arranged in the container, the backlight assembly include light guide plate, quantum rod and
LED light bar, the light guide plate are located in container, and the light guide plate includes light guide body, at left and right sides of the light guide body
At least side is formed with the expansion edge extended along the longitudinal direction, and the thickness on the expansion edge is greater than the thickness of the light guide body,
And the lateral surface on the expansion edge is equipped with fitting groove, the fitting groove extends along the longitudinal direction；
The quantum rod is installed in the fitting groove and extends along the longitudinal direction；
The LED light bar includes substrate and is spaced the multiple LED lamp beads set on the substrate, and the substrate passes through fastening
Part is fixed to the lateral surface on the expansion edge, and the LED lamp bead is located in the fitting groove and opposite with the quantum rod；
Surface frame, the surface frame snap connection with the bottom case, the backlight assembly are pressed abd fixed in the bottom case.
The quantum dot backlight provided according to embodiments of the present invention, light guide plate include light guide body, light guide body or so two
At least side of side is formed with the expansion edge extended along the longitudinal direction, and the lateral surface for expanding edge is equipped with fitting groove, quantum rod installing
In extending in the fitting groove and along the longitudinal direction；LED light bar fastener is fixed to the lateral surface on expansion edge, in this way, forming one
A independent backlight assembly, when this independent backlight assembly is mounted in bottom case, even there is the problems such as deformation in bottom case, but
It is that the positional relationship between LED light bar, quantum rod will not change, so that backlight effect is essentially unaffected,
That is, it is possible to ensure that the performance of backlight is stable, reliable, in addition, the dust-proof effect of this backlight assembly is also more preferable.
In addition, quantum dot backlight according to the above embodiment of the present invention can also have the following additional technical features:
According to one embodiment of present invention, the lower surface of the light guide body is aligned with the bottom wall, the bottom wall
Equipped with, along compatible recessed groove, the expansion edge is housed in the recessed groove with the expansion.
According to one embodiment of present invention, the edge in the bottom case has L-type corner platform, the L-type corner platform
Including the first side block portion and second side stopper vertical with first side block portion, first side block portion and second side wall portion it
Between form trough with straight angle, the corner of the backlight assembly is located in the bottom case by the trough with straight angle.
According to one embodiment of present invention, the expansion is along including convergence part, first gear edge and second gear edge, institute
The side for stating convergence part is connect with the light guide body, and the first gear edge and second gear edge are connected to the convergence part
The other side, the first gear edge and the second gear edge are opposite up and down, to limit the fitting groove；
The fastener is screw, and the first gear edge and second gear edge are equipped with threaded hole, set on the substrate
There is through-hole, the screw passes through the through-hole and is threadedly coupled with the threaded hole.
According to one embodiment of present invention, the upper surface and the lower surface on the extension edge is equipped with for reflecting the LED
The reflecting layer of the light of lamp bar.
According to one embodiment of present invention, the convergence part is being trapezoidal and described perpendicular to section in the front-back direction
The thickness of the side of convergence part is less than the thickness of the other side of the convergence part.
According to one embodiment of present invention, the side wall includes two opposite in the lateral direction the first side walls, institute
It states and is equipped with gap between substrate and the neighbouring the first side wall, be folded with cooling fin in the gap.
According to one embodiment of present invention, the side wall further includes two opposite in the longitudinal direction second sidewalls；
The surface frame have opposite gear in the longitudinal direction along and neighbouring gear edge back-off, the gear edge extend downwardly and
On the inside of the second sidewall, the second sidewall is equipped with and the card hole for being buckled to and being interlocked backstop.
According to one embodiment of present invention, it is additionally provided with heat sink on the bottom wall, leads in the heat sink equipped with liquid
Road, the fluid passage is interior to be equipped with cooling medium.
On the other hand, vehicle-carrying display screen according to an embodiment of the present invention has quantum dot backlight as described above.
The vehicle-carrying display screen provided according to embodiments of the present invention, has above-mentioned quantum dot backlight, and light guide plate includes leaded light
Ontology, at least side at left and right sides of light guide body are formed with the expansion edge extended along the longitudinal direction, and the lateral surface for expanding edge is set
There is fitting groove, quantum rod is installed in the fitting groove and extends along the longitudinal direction；LED light bar fastener is fixed to expansion edge
Lateral surface, in this way, forming an independent backlight assembly, when this independent backlight assembly is mounted in bottom case, even bottom
There is the problems such as deformation in shell, still, the positional relationship between LED light bar, quantum rod will not change, so that backlight is imitated
Fruit is essentially unaffected, that is to say, that, it can be ensured that the performance of backlight is stable, reliable, in addition, this backlight assembly is anti-
Dirt effect is also more preferable.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the structural schematic diagram of quantum dot backlight of the embodiment of the present invention；
Fig. 2 is cross-sectional view at A-A in Fig. 1；
Fig. 3 is cross-sectional view at B-B in Fig. 1；
Fig. 4 is the exploded view of quantum dot backlight of the embodiment of the present invention；
Fig. 5 is the exploded view of backlight assembly in quantum dot backlight of the embodiment of the present invention；
Fig. 6 is the structural schematic diagram of bottom case in quantum dot backlight of the embodiment of the present invention；
Fig. 7 is the structural schematic diagram of surface frame in quantum dot backlight of the embodiment of the present invention.
Appended drawing reference:
Bottom case 10；
Bottom wall 101；
The first side wall 102；
Second sidewall 103；
Card hole 1031；
Container H10；
L-type corner platform 104；
First side block portion 1041；
Second side stopper 1042；
Trough with straight angle 1043；
Cooling fin 11；
Heat sink 12；
Fluid passage 121；
Backlight assembly 20；
Light guide plate 201；
Light guide body 2011；
Expansion is along 2012；
Convergence part 2012a；
First gear edge 2012b；
Second gear edge 2012c；
Threaded hole 2012d；
Quantum rod 202；
LED light bar 203；
Substrate 2031；
LED lamp bead 2032；
Reflecting layer 204；
Surface frame 30；
Gear is along 301；
Back-off 302；
Reflecting plate 40；
Optical film 50；
Brightness enhancement film 501；
Diffusive reflective film 502；
Polarizing coating 503.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention, based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " " axial direction ", " circumferential direction ", " radial direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be machine
Tool connection, is also possible to be electrically connected；It can be directly connected, two members can also be can be indirectly connected through an intermediary
Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in this hair as the case may be
Concrete meaning in bright.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
The quantum dot backlight of the present invention is described in detail embodiment with reference to the accompanying drawings.
Shown in referring to Figure 1 to Figure 7, the quantum dot backlight provided according to embodiments of the present invention, including bottom case 10, backlight group
Part 20 and surface frame 30.
Specifically, bottom case 10 includes bottom wall 101 and side wall, limits container between the bottom wall 101 and the side wall
H10.Backlight assembly 20 is arranged in the container H10, and surface frame 30 is snapped connection with the bottom case 10, by the backlight assembly
20 are pressed abd fixed in the bottom case 10.
Backlight assembly 20 includes light guide plate 201, quantum rod 202 and LED light bar 203, wherein light guide plate 201 is located at receiving
In slot H10, the light guide plate 201 includes light guide body 2011, and at least side of 2011 left and right sides of light guide body is formed
There is the expansion that extends along the longitudinal direction along 2012, the expansion is greater than the thickness of the light guide body 2011 along 2012 thickness,
And the expansion is equipped with fitting groove along 2012 lateral surface, the fitting groove extends along the longitudinal direction.Quantum rod 202 is installed in institute
It states in fitting groove and extends along the longitudinal direction.LED light bar 203 is located at more on the substrate 2031 including substrate 2031 and interval
A LED lamp bead 2032, the substrate 2031 are fixed to the expansion along 2012 lateral surface, the LED lamp bead by fastener
2032 is in the fitting groove and opposite with the quantum rod 202.
That is, backlight assembly 20 is mainly by light guide plate 201, quantum rod 202 and LED light bar 203, light guide plate 201
Left side and/or right side are equipped with expansion along 2012, and expansion extends along the longitudinal direction along 2012, preferably, expansion is prolonged along 2012
The length and the equal length of light guide plate 201 in the longitudinal direction stretched, also, the expansion is equipped with along 2012 lateral surface along front and back
The fitting groove that direction extends, quantum rod 202 are installed in the fitting groove and extend in the same direction with expansion along 2012.And LED light bar 203
Mainly by substrate 2031 and multiple LED lamp beads 2032, substrate 2031 is fixed on the lateral surface expanded along 2012 by fastener, more
A LED lamp bead 2032 is sequentially arranged at intervals along the longitudinal direction to be located on substrate 2031 towards expansion along 2012 side, also,
LED lamp bead 2032 is located in fitting groove and opposite with quantum rod 202 or so, and the light that LED lamp bead 2032 issues passes through quantum rod
202 progress light are incident upon light guide plate 201 after turning.
It should be noted that it is different from backlight in the prior art, quantum dot backlight provided in this embodiment,
In, light guide plate 201, quantum rod 202 and LED light bar 203 form an independent backlight assembly 20, in the backlight assembly 20,
Light guide plate 201, quantum rod 202 and LED light bar 203 are relatively fixed and be formed as one.
It is understood that the quantum dot backlight can also include reflecting plate 40 and optical film 50, reflecting plate 40 is located at
Between light guide plate 201 and bottom wall 101, optical film 50 is located at the top of light guide plate 201, and the light entered in light guide plate 201 is logical
It crosses reflecting plate 40 and reflexes to light guide plate 201, then project from light guide plate 201 to optical film 50 and optical treatment is carried out by optical film 50
After project, wherein optical film 50 may include the brightness enhancement film 501, diffusive reflective film 502 and polarizing coating 503 being stacked, and light is logical
After crossing brightness enhancement film 501, diffusive reflective film 502 and the progress optical treatment of polarizing coating 503, better optical effect can achieve.
The quantum dot backlight provided according to embodiments of the present invention, light guide plate 201 include light guide body 2011, light guide body
At least side of 2011 left and right sides is formed with the expansion extended along the longitudinal direction along 2012, and the lateral surface expanded along 2012 is equipped with
Fitting groove, quantum rod 202 are installed in the fitting groove and extend along the longitudinal direction；203 fastener of LED light bar is fixed to expansion
Along 2012 lateral surface, in this way, forming an independent backlight assembly 20, this independent backlight assembly 20 is mounted on bottom case 10
When middle, even there is the problems such as deformation in bottom case 10, and still, the positional relationship between LED light bar 203, quantum rod 202 will not be sent out
It is raw to change, so that backlight effect is essentially unaffected, that is to say, that, it can be ensured that the performance of backlight is stable, reliable,
In addition, the dust-proof effect of this backlight assembly 20 is also more preferable.
Referring to shown in Fig. 2 and Fig. 3, in one embodiment of the invention, the lower surface of light guide body 2011 and the bottom
Wall 101 aligns, and the bottom wall 101 is equipped with the expansion along 2012 compatible recessed grooves, and the expansion is along 2012 receivings
In the recessed groove.
That is, when light guide plate 201 is mounted in the container H10 of bottom case 10, the light guide body 2011 of light guide plate 201
It is to fit with the bottom wall 101 of bottom case 10, and the expansion of light guide plate 201 along 2012 is accommodated in the recessed groove of bottom wall 101
, so, it can be ensured that light guide plate 201 is more solid and reliable in bottom case 10.
Further, the edge in bottom case 10 has L-type corner platform 104, and the L-type corner platform 104 includes the first side
Stopper 1041 and second side stopper 1042 vertical with first side block portion 1041, first side block portion 1041 and second side
Trough with straight angle 1043 is formed between 103, wall, the corner of the backlight assembly 20 is located in the bottom by the trough with straight angle 1043
In shell 10.
That is, four edges in bottom case 10 are respectively formed a L-type corner platform 104, L-type corner platform 104
Backlight assembly 20 is located in bottom case 10, in assembling using trough with straight angle 1043 to backlight assembly 20 by upper formation trough with straight angle 1043
Four corners positioned, that is to say, four corners of backlight assembly 20 are fastened on respectively in four trough with straight angle 1043, such as
This, is convenient to the assembling of backlight assembly 20, simultaneously, it can be ensured that after backlight assembly 20 and the assembling of bottom case 10, structure is more firm
Reliably.
Referring to shown in Fig. 2 and Fig. 5, in one embodiment of the invention, expansion includes convergence part 2012a, the along 2012
One rib portion 2012b and second gear edge 2012c, the side of the convergence part 2012a are connect with the light guide body 2011, institute
It states first gear edge 2012b and second gear edge 2012c and is connected to the other side of the convergence part 2012a, first rib
Portion 2012b is opposite with the second gear edge 2012c or more, to limit the fitting groove.Fastener is screw, described first
Rib portion 2012b and second gear edge 2012c is equipped with threaded hole 2012d, and the substrate 2031 is equipped with through-hole, the screw
It is threadedly coupled across the through-hole with the threaded hole 2012d.
That is, expansion is along 2012 by convergence part 2012a, first gear edge 2012b and the 2012c connection of second gear edge
U-shaped structure substantially is formed, quantum rod 202 is mounted in fitting groove, and LED light bar 203 by screw and is expanded along 2012
Lateral surface is connected and fixed.In assembling, first quantum rod 202 is mounted in fitting groove, then screw is passed through on substrate 2031
It is threadedly coupled after through-hole with the threaded hole 2012d on first gear edge 2012b and second gear edge 2012c, in this way, i.e. composable
Backlight assembly 20 is formed, easy to assembly, sound construction is reliable.
Advantageously, the upper surface and the lower surface on edge is extended equipped with the reflecting layer for reflecting the light of the LED light bar 203
204, illustratively, which may include the reflectance coating of reflector plate and the lower surface coated in reflector plate, reflector plate
Expansion is pasted onto along 2012 surface, can be molded of plastic material, such as polyethylene terephthalate (PET), poly- carbon
Acid esters (PC) and polystyrene (PS), reflectance coating can the materials such as silver, titanium dioxide, to increase light reflectivity.
In this way, the light that LED light bar 203 issues, a part of light directive reflecting layer 204 is reflected by reflecting layer 204
Afterwards, light is reflected can be in light guide plate 201, so, on the one hand, can prevent light from expansion projected along 2012 and caused by leakage
On the other hand light utilization efficiency can be improved in optical phenomenon.
Optionally, convergence part 2012a is being trapezoidal, and the institute of the convergence part 2012a perpendicular to section in the front-back direction
State the thickness of the other side of the thickness less than the convergence part 2012a of side.In this way, convergence part 2012a and light guide body
The intensity of junction between 2011 is in gradual variation, so that junction is not easy to break, improves reliability of structure.
Referring to shown in Fig. 2, Fig. 4 and Fig. 6, in one embodiment of the invention, side wall includes opposite in the lateral direction
Two the first side walls 102, gap is equipped between the substrate 2031 and the neighbouring the first side wall 102, in the gap
It is folded with cooling fin 11.In this way, the heat of LED light bar 203 can be conducted to bottom case 10 using cooling fin 11, in turn
Improve heat dissipation effect, it is ensured that working performance is more stable.
It is understood that cooling fin 11 can be using materials such as thermal coefficient higher metal materials, such as aluminium, copper.
Referring to shown in Fig. 3, Fig. 4 and Fig. 7, in one embodiment of the invention, side wall further includes phase in the longitudinal direction
Pair two second sidewalls 103；Surface frame 30 has gear opposite in the longitudinal direction along 301 and adjacent to the back-off kept off along 301
302, the gear is extended downwardly along 301 and backstop is in 103 inside of second sidewall, and the second sidewall 103 is equipped with and institute
State the card hole 1031 that back-off 302 is interlocked.
That is, snapped connection between surface frame 30 and bottom case 10 by back-off 302 and the cooperation realization of card hole 1031,
Connection disassembling is convenient, convenient for assembling, in addition, gear is along 301 backstops in 103 inside of second sidewall of bottom case 10, it can be ensured that surface frame
It is connected between 30 and bottom case 10 more solid and reliable.
In one embodiment of the invention, it is additionally provided with heat sink 12 on bottom wall 101, is equipped with liquid in the heat sink 12
Channel 121, the fluid passage 121 is interior to be equipped with cooling medium, and in Fig. 1 example, the bottom surface of bottom wall 101 is equipped with mounting groove, dissipates
Hot plate 12 is sticked in mounting groove, and cooling medium can be using water, acetone, methanol, ethylene glycol, Dowtherm etc..
Due to when the display equipment application comprising the quantum dot backlight is when on automobile, since automobile is in use,
The temperature of internal environment is very high, and it is swollen to may result in the components heat such as light guide plate 201 in quantum backlight, surface frame 30, bottom case 10
It is swollen etc., cause the problems such as performance is unstable, and reliability is low.
In the present embodiment, by the way that heat sink 12 is arranged on bottom case 10, can to conduct can to the heat on bottom case 10
It is aobvious comprising the quantum dot backlight quickly to be absorbed by the cooling medium of heat sink 12 and its inside, and in a particular application
When showing that equipment is installed on car body or other carriers, fan is equipped in car body or other carriers, fan is dried to heat sink 12, such as
This, can carry out wind-cooling heat dissipating, and then improve heat dissipation effect, it is ensured that the quantum dot backlight has preferably steady to heat sink 12
Qualitative and reliability.
Vehicle-carrying display screen according to an embodiment of the present invention has quantum dot backlight as described above.
The vehicle-carrying display screen provided according to embodiments of the present invention, has above-mentioned quantum dot backlight, and light guide plate 201 includes leading
Trimmed book body 2011, at least side of 2011 left and right sides of light guide body are formed with the expansion extended along the longitudinal direction along 2012, expand
The lateral surface opened along 2012 is equipped with fitting groove, and quantum rod 202 is installed in the fitting groove and extends along the longitudinal direction；LED light
203 fastener of item is fixed to expansion along 2012 lateral surface, in this way, an independent backlight assembly 20 is formed, it is this independent
When backlight assembly 20 is mounted in bottom case 10, even there is the problems such as deformation, still, LED light bar 203, quantum rod in bottom case 10
Positional relationship between 202 will not change, so that backlight effect is essentially unaffected, that is to say, that can be true
The performance for protecting backlight is stable, reliable, in addition, the dust-proof effect of this backlight assembly 20 is also more preferable.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (10)
1. a kind of quantum dot backlight characterized by comprising
Bottom case, the bottom case include bottom wall and side wall, limit container between the bottom wall and the side wall；
Backlight assembly, the backlight assembly are arranged in the container, and the backlight assembly includes light guide plate, quantum rod and LED
Lamp bar, the light guide plate are located in container, and the light guide plate includes light guide body, at left and right sides of the light guide body at least
Side is formed with the expansion edge extended along the longitudinal direction, and the thickness on the expansion edge is greater than the thickness of the light guide body, and institute
The lateral surface for stating expansion edge is equipped with fitting groove, and the fitting groove extends along the longitudinal direction；
The quantum rod is installed in the fitting groove and extends along the longitudinal direction；
The LED light bar includes substrate and is spaced the multiple LED lamp beads set on the substrate, and the substrate is solid by fastener
The fixed lateral surface to the expansion edge, the LED lamp bead is located in the fitting groove and opposite with the quantum rod；
Surface frame, the surface frame snap connection with the bottom case, the backlight assembly are pressed abd fixed in the bottom case.
2. quantum dot backlight according to claim 1, which is characterized in that the lower surface of the light guide body and the bottom
Wall aligns, and the bottom wall is equipped with the expansion along compatible recessed groove, and the expansion edge is housed in the recessed groove.
3. quantum dot backlight according to claim 1, which is characterized in that the edge in the bottom case turns with L-type
Angle platform, the L-type corner platform include the first side block portion and second side stopper vertical with first side block portion, first side
Trough with straight angle is formed between stopper and second side wall portion, the corner of the backlight assembly is located in the bottom case by the trough with straight angle
It is interior.
4. quantum dot backlight according to claim 1, which is characterized in that the expansion is along including convergence part, first gear
Edge and second gear edge, the side of the convergence part are connect with the light guide body, the first gear edge and the second rib
Portion is connected to the other side of the convergence part, and the first gear edge and the second gear edge are opposite up and down, to limit
State fitting groove；
The fastener is screw, and the first gear edge and second gear edge are equipped with threaded hole, and the substrate is equipped with logical
Hole, the screw pass through the through-hole and are threadedly coupled with the threaded hole.
5. quantum dot backlight according to claim 1, which is characterized in that the upper surface and the lower surface on the extension edge is set
There is the reflecting layer of the light for reflecting the LED light bar.
6. quantum dot backlight according to claim 1, which is characterized in that the convergence part is perpendicular in the front-back direction
Section is trapezoidal, and the thickness of the side of the convergence part is less than the thickness of the other side of the convergence part.
7. quantum dot backlight according to claim 1, which is characterized in that the side wall includes opposite in the lateral direction
Two the first side walls, gap is equipped between the substrate and the neighbouring the first side wall, is folded with heat dissipation in the gap
Piece.
8. quantum dot backlight according to claim 1, which is characterized in that the side wall further includes phase in the longitudinal direction
Pair two second sidewalls；
Back-off of the surface frame with opposite in the longitudinal direction gear edge and neighbouring gear edge, the gear edge extends downwardly and backstop
On the inside of the second sidewall, the second sidewall is equipped with and the card hole for being buckled to and being interlocked.
9. quantum dot backlight according to claim 1, which is characterized in that heat sink is additionally provided on the bottom wall, it is described
It is equipped with fluid passage in heat sink, is equipped with cooling medium in the fluid passage.
10. a kind of vehicle-carrying display screen, which is characterized in that have quantum dot backlight as claimed in any one of claims 1-9 wherein
Source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910386071.2A CN110211488B (en) | 2019-05-09 | 2019-05-09 | Quantum dot backlight and vehicle-mounted display screen with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910386071.2A CN110211488B (en) | 2019-05-09 | 2019-05-09 | Quantum dot backlight and vehicle-mounted display screen with same |
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Cited By (1)
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| CN114187834A (en) * | 2021-12-10 | 2022-03-15 | 深圳市云湖电子科技有限公司 | Vehicle-mounted display screen with quantum dot backlight source |
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| CN110211488B (en) | 2021-08-13 |
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Denomination of invention: Quantum dot backlight and vehicle mounted display screen with it Effective date of registration: 20220719 Granted publication date: 20210813 Pledgee: Taihu County Financing Guarantee Co.,Ltd. Pledgor: ANHUI SAN-MATE PHOTOELECTRIC CO.,LTD. Registration number: Y2022980010765 |
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