CN209560128U - A kind of backlight module of stable structure - Google Patents
A kind of backlight module of stable structure Download PDFInfo
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- CN209560128U CN209560128U CN201920388379.6U CN201920388379U CN209560128U CN 209560128 U CN209560128 U CN 209560128U CN 201920388379 U CN201920388379 U CN 201920388379U CN 209560128 U CN209560128 U CN 209560128U
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- bottom case
- guide plate
- light guide
- circuit board
- backlight module
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Abstract
The utility model relates to a kind of backlight modules of stable structure, including rubber shell, bottom case, light guide plate and side light source, the side inner surface of bottom case is arranged in side light source, light guide plate is arranged in bottom case, reflective membrane is equipped between bottom case and light guide plate, light guide plate is successively arranged light-diffusing film, lower bright enhancement film and upper bright enhancement film in side opposite with bottom case, and the top of upper bright enhancement film is arranged in rubber shell, and is detachably connected with bottom case.Bottom shell is equipped with locating piece, and locating piece side is abutted with the side of light guide plate, the side connection of the other side and bottom case.In addition, the side of bottom case is equipped with card slot, light-diffusing film, lower bright enhancement film and upper bright enhancement film are respectively equipped with detent compatible with card slot portion.Backlight module disclosed by the utility model effectively prevents light guide plate, light-diffusing film, lower bright enhancement film and upper bright enhancement film in the shaking of bottom shell, and the position between rubber shell and bottom case is realized by the way that fixed convex block is arranged between bottom case and rubber shell and is fixed, backlight module stability is improved, conducive to prolonging the service life.
Description
Technical field
The utility model relates to back light source technique field, in particular to a kind of backlight module of stable structure, the backlight mould
Group stability with higher, and convenient for assembling.
Background technique
Backlight module is a kind of area source, provides light source from the back side of display device for display device, thus is referred to as to carry on the back
Light source, also therefore backlight module is often required as carrying support construction, display device and display device is fixedly mounted
Additional structure.Existing backlight module generally comprises bottom case, reflective membrane, light guide plate, light-diffusing film, add lustre to mould group and rubber shell, rubber shell
The lateral surface of medial surface and bottom case be mutually clamped, the additional structure of display device and display device is fixedly mounted in rubber shell
Face.Usual rubber shell is mutually clamped by fixture block with card hole with bottom case, the outer surface of the rubber shell medial surface after clamping and bottom case side it
Between unavoidably will form gap, extended height is bigger outward for fixture block, and gap will be bigger, the presence in gap cause rubber shell with
The package assembly of bottom case is unstable, is easy stress deformation, even results in rubber shell fracture, is unfavorable for mentioning for backlight module stability
It is high.In addition, backlight module is all that light guide plate is arranged in bottom shell mostly at present, directly placed between bottom case and light guide plate
Locating piece is realized to squeeze light guide plate and be fixed.Although direct placement positioning block can prevent light guide plate in bottom case to a certain extent
Inside generates change in location, but since, without being fixedly connected, this allows for locating piece very between locating piece and light guide plate, bottom case
It is easy to be detached from the position of script in the case where backlight module is vibrated, light guide plate is made to lose extruding force, once light guide plate is
The squeezing action of locating piece is gone, change in location will be generated in bottom shell, and then influence the normal use of backlight module.
Utility model content
In order to solve the above-mentioned technical problem the utility model, provides a kind of backlight module of stable structure, including rubber shell,
The side inner surface of bottom case is arranged in bottom case, light guide plate and side light source, the side light source, and the light guide plate is arranged in bottom case
Portion, between the bottom case and light guide plate be equipped with reflective membrane, the light guide plate side opposite with bottom case be successively arranged light-diffusing film, under
Bright enhancement film and upper bright enhancement film, the rubber shell are arranged in upper bright enhancement film side opposite with bottom case, and the rubber shell and bottom case are detachable
Connection；The bottom shell is equipped with multiple locating pieces, and the side of each locating piece side and light guide plate abuts against, the other side and bottom case
Side be detachably connected.
Further, the side of the bottom case is equipped with shrinkage pool, and the locating piece is equipped with protrusion knot compatible with shrinkage pool
Structure.
Further, the locating piece is L type structure, and the vertex position of light guide plate is arranged in the locating piece, described to lead
The thickness of tabula rasa is greater than the thickness of locating piece.
Further, the medial surface of the rubber shell is equipped with card hole, and the outer surface of the side of the bottom case is equipped with and card hole
Compatible fixture block.
Further, the outer surface of the side of the bottom case is additionally provided with multiple fixed convex blocks, fixed convex block one end and rubber shell
Medial surface abut against, the other end is fixedly connected with the side of bottom case, and the fixed convex block and bottom case are integrally formed.
Further, the side light source includes flexible circuit board and the LED light that is arranged on flexible circuit board, described soft
Property circuit board be strip structure, the flexible circuit board is arranged along the side inner surface of bottom case, and the side of bottom case is equipped with and flexibility
The compatible through-hole of circuit board, flexible circuit board pass through through-hole and fit with the bottom case back side, and the flexible circuit board is carried on the back in bottom case
Face extends outwardly after folding.
Further, the bottom case back side is in the folding position of flexible circuit board, the position that connects of flexible circuit board and through-hole
It sets and is respectively equipped with scratch resistant adhesive tape, the flexible circuit board is equipped with protective glue band in side opposite with bottom case.
Further, the bottom case back side is additionally provided with pressing line, and the pressing line is for presetting flexible circuit board and preventing
The position of frictioning band.
Further, the side of the bottom case is equipped at least one card slot, the light-diffusing film, lower bright enhancement film and upper bright enhancement film
It is respectively equipped with detent compatible with card slot portion.
Further, the rubber shell is additionally provided with protective film in side opposite with bottom case, and the protective film and rubber shell pass through glue
It is connected.
The advantageous effects that the utility model is played are as follows:
Compared with prior art, the utility model discloses a kind of backlight module of stable structure, which exists
Locating piece is provided between bottom case and light guide plate, locating piece is fixedly connected with the side of bottom case, and the position for realizing locating piece is solid
It is fixed, the generation that locating piece caused by vibrating because of backlight module is detached from original position phenomenon is effectively prevented, is conducive to extend backlight module
Service life.In addition, being additionally arranged several fixed convex blocks, the inside of fixed convex block one end and rubber shell in the side outer surface of bottom case
Face abuts against, and the other end is fixedly connected with the side of bottom case, and the setting of fixed convex block avoids shakes between rubber shell and bottom case
It is dynamic, deformation of lying prone in rubber shell is effectively prevented, the stability of backlight module is improved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model backlight module.
Fig. 2 is the positional diagram of the utility model bottom case and locating piece
Fig. 3 is this practical new part A enlarged drawing.
Fig. 4 is the assembling schematic diagram of the utility model bottom case and locating piece.
Fig. 5 is the positional diagram of the utility model bottom case and card slot.
Fig. 6 is the utility model part B enlarged drawing.
Fig. 7 is the connection relationship diagram of the utility model bottom case and fixed convex block.
Fig. 8 is the structural schematic diagram at the utility model bottom case back side.
Fig. 9 is schematic diagram of the protective glue with overlay area.
Appended drawing reference:
1- rubber shell, 11- card hole, 2- bottom case, 21- locating piece, 211- bulge-structure, 22- fixed double-sided glue, the anti-frictioning of 23-
Band, 24- protective glue band, 25- stud bolt hole glue, 26- shrinkage pool, 27- fixture block, the fixed convex block of 28-, 29- pressing line, 210- card slot, 3-
Light guide plate, the fixed glue of 31- diaphragm, 4- side light source, 41-LED lamp, 42- flexible circuit board, 43- heat-conducting glue, 5- reflective membrane, 6- dissipate
Light film, 7- bright enhancement film group, the upper bright enhancement film of 71-, bright enhancement film under 72-, 8- protective film, 81- foam double-faced adhesive, 9- edge-wrapping adhesive.
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；In order to better illustrate this embodiment, attached
Scheme certain components to have omission, zoom in or out, does not represent the size of actual product；To those skilled in the art,
The omitting of some known structures and their instructions in the attached drawings are understandable；The same or similar label corresponds to same or similar
Component；The terms describing the positional relationship in the drawings are only for illustration, should not be understood as the limitation to this patent.
Specific embodiment
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawing, so that advantages and features of the invention are more
It is easily readily appreciated by one skilled in the art, to make apparent define to protection scope of the present invention.
Embodiment 1:
As shown in figs. 1-9, it present embodiments provides a kind of backlight module of stable structure, including rubber shell 1, bottom case 2, leads
Tabula rasa 3 and side light source 4.The bottom case 2 is a upper opening of shell assembling structure, and 2 shape of bottom case is concave character type structure, bottom case 2
It is generally made of metal, such as iron-clad.The side inner surface of bottom case 2 is arranged in the side light source 4, and the light guide plate 3 is arranged
Inside bottom case 2, reflective membrane 5 is equipped between the bottom case 2 and light guide plate 3, reflective membrane 5 connect with 2 inner bottom surface gluing of bottom case, keeps away
Exempt from absorption of 2 inner bottom surface of bottom case to light.The light guide plate 3 is equipped with light-diffusing film 6 in side opposite with bottom case 2, and light-diffusing film 6 passes through
The fixed glue 31 of diaphragm is connected with light guide plate 3.Light-diffusing film 6 is equipped with bright enhancement film group 7 in side opposite with light guide plate 3.The bright enhancement film
Group 7 includes upper bright enhancement film 71 and lower bright enhancement film 72, and the lower bright enhancement film 72 is arranged between upper bright enhancement film 71 and light-diffusing film 6.It dissipates
Light film 6, lower bright enhancement film 72 and upper bright enhancement film 71 are fixed on light guide plate 3 by adhesive means respectively.Wherein, the bright enhancement film group
The bright enhancement film quantity that 7 inside are contained can be adjusted according to actual requirement, it is not limited to upper bright enhancement film 71 and lower bright enhancement film
72。
As shown in Fig. 2-Fig. 6, at least one side is provided with card slot 210 in four sides of the bottom case 2.The card
Slot 210 is located in one of the end of side, and card slot 210 is L-type, and the card slot 210 of L-type connects to forming U-shaped knot with adjacent side
Structure.The light-diffusing film 6, lower bright enhancement film 72 and upper bright enhancement film 71 are respectively equipped with detent compatible with card slot 210 portion, detent portion with
Card slot 210 is clamped, and is realized the fixation to 71 position of light-diffusing film 6, lower bright enhancement film 72 and upper bright enhancement film, is effectively prevented light-diffusing film
6, lower bright enhancement film 72 and 71 appearance position of upper bright enhancement film are mobile.The structure is provided as light-diffusing film 6, lower bright enhancement film 72 and upper increasing
The supplement that light film 71 is connect with bottom case gluing can be such that the stability of backlight module is upgraded, and it is perfectly safe to be truly realized.
The rubber shell 1 is a square frame-like structure, and rubber shell 1 is adapted with bottom case 2, and the setting of rubber shell 1 adds lustre to upper
The side opposite with bottom case 2 of film 71, the rubber shell 1 are detachably connected with bottom case 2.The connection of bottom case 2 and rubber shell 1 is to positioned at the two
Between each component realize fixed assembling.Rubber shell 1 after assembling is mutually fixed with bottom case 2 by two edge-wrapping adhesives 9, two edge-wrapping adhesives
9 are arranged in the two sides of backlight module, and each 9 upper end of edge-wrapping adhesive is connected with rubber shell 1, and lower end is connected with bottom case 2, improve rubber shell 1 and bottom
The binding force of shell 2.Since there are gaps between the side of light guide plate 3 and the side inner surface of bottom case 2, so that light guide plate 3 easily goes out
It now shakes, influences product overall effect.In order to fix light guide plate 3 and the position of bottom case 2, bottom case 2 is internally provided with multiple fixed
Position block 21, each 21 side of locating piece and the side of light guide plate 3 abut against, and the other side and the side of bottom case 2 are detachably connected.Positioning
The connection of block 21 and bottom case 2 improves the installation fastness of locating piece 21, and locating piece 21 is effectively anti-to the squeezing action of light guide plate 3
Stop light guide plate 3 to be subjected to displacement due to vibration.
Preferably, as shown in Figure 1, Figure 2, Figure 3 and Figure 4, the locating piece 21 includes L type structure and strip structure,
The locating piece 21 of L-type structure is arranged at the vertex position of light guide plate 3, and the straight of light guide plate 3 is arranged in the locating piece 21 of strip structure
Line marginal position.The thickness of the light guide plate 3 is greater than the thickness of locating piece 21.The locating piece 21 of L-type structure and strip structure
Locating piece 21 is arranged against the side inner surface of bottom case 2.And the side of locating piece 21 is abutted with the side of light guide plate 3, it is another
Side is fixedly connected with the side of bottom case 2.General locating piece 21 can be connected with the side of bottom case 2 by clamping, can also be passed through
Double-sided adhesive adhesion is fixed.In the present embodiment, locating piece 21 is equipped with bulge-structure 211, the bottom case in side opposite with light guide plate 3
2 side is equipped with shrinkage pool 26 compatible with bulge-structure 211, and bulge-structure 211 is matched with shrinkage pool 26 realizes positioning
The clamping of block 21 and bottom case 2.Locating piece 21 and bottom case 2 are fixedly connected with the stability for improving locating piece 21 to a certain degree, keep away
Exempt from locating piece 21 to be detached between bottom case 2 and light guide plate 3 because the reasons such as shaking or shaking, makes light guide plate 3, light-diffusing film 6, lower bright enhancement film
72 and upper bright enhancement film 71 shaken inside bottom case 2, influence the normal use of backlight module.
Preferably, the medial surface of the rubber shell 1 is equipped with multiple card holes 11 as shown in Fig. 2, Fig. 3, Fig. 5 and Fig. 7,
Multiple card holes 11 are uniformly distributed along four medial surfaces of rubber shell 1.The outer surface of the side of the bottom case 2 is equipped with suitable with 11 phase of card hole
The fixture block 27 matched, fixture block 27 are corresponding with the position of card hole 11.Rubber shell 1 is clamped with bottom case 2 by fixture block 27 and 11 phase of card hole.For
The assembling process of fixture block 27 and card hole is completed, between the outer surface of the side of bottom case 2 and the medial surface of rubber shell 1 inevitably
There are certain interval, the presence in the gap influences the stable connection between rubber shell 1 and bottom case 2.In order to avoid bottom case 2 and rubber shell 1
Between existing gap influence the stability of backlight module, be additionally provided with multiple fixed convex blocks 28 in the outer surface of the side of bottom case 2,
Fixed convex block 28 is uniformly distributed along four lateral surfaces of bottom case 2, and fixed convex block 28 is lower than by the height that bottom case side outwardly protrudes
The height that fixture block 27 outwardly protrudes.Fixed convex block 28 can use rectangular, trapezoidal or cylindrical, pref. cylindrical structure.It is fixed
28 side of convex block is fixedly connected with the side of bottom case 2, and the other side and the medial surface of rubber shell 1 abut against.Fixed convex block 28 and bottom case 2
It is integrally formed.Fixed convex block 28 forms supporting role between bottom case 2 and rubber shell 1, for controlling between bottom case 2 and rubber shell 1
Distance remains unchanged, and maintains the integrally-built stability of backlight module.
Preferably, the side light source 4 includes flexible circuit board 42 and is arranged soft as shown in Fig. 1, Fig. 8 and Fig. 9
Multiple LED light 41 on property circuit board 42, each LED light 41 are connected by welding with flexible circuit board 42.The flexible circuit board
42 be strip structure, and the flexible circuit board 42 is arranged along the side inner surface of bottom case 2, the side of flexible circuit board 42 and bottom case 2
Side inner surface is connected by heat-conducting glue 43.The heat transfer that heat-conducting glue 43 can in time generate LED light 41 is avoided to bottom case 2
The overheat of LED light 41 can not work normally.The side of bottom case 2 is equipped with through-hole compatible with flexible circuit board 42.Flexible circuit board
42 bend inwards above through-hole, fit then across through-hole and 2 back side of bottom case, the golden finger and bottom case of flexible circuit board 42
2 back sides are disposed opposite to each other.The flexible circuit board 42 extends after folding again to outside bottom case 2 at 2 back side of bottom case.Flexible circuit
The part that plate 42 is located at 2 back side of bottom case is of an L-shaped structure.One end that flexible circuit board 42 stretches out 2 back side of bottom case is connected with power supply, shape
At circuit, electric energy is provided for the normal work of LED light.
Preferably, 2 back side of bottom case is in the folding position of flexible circuit board 42, flexible circuit board 42 and through-hole
The position that is in contact is respectively equipped with scratch resistant adhesive tape 23, and scratch resistant adhesive tape 23 is for avoiding flexible circuit board 42 from being scraped off.Flexible circuit board
42 are equipped with protective glue band 24, the i.e. top that is covered on flexible circuit board 42 of protective glue band 24 in side opposite with bottom case 2, protect soft
Property circuit board 42 is not damaged.In order to which flexible circuit board 42, scratch resistant adhesive tape 23, edge-wrapping adhesive 9 and Product labelling are accurately bonded
In the designated position at 2 back side of bottom case, 2 back side of bottom case is provided with pressing line 29 and white oil line.The general setting of pressing line 29 is in quasi- patch
The position of flexible circuit board 42, scratch resistant adhesive tape 23, edge-wrapping adhesive 9 and Product labelling is closed, is formed and flexible circuit board 42, anti-frictioning
With the consistent figure of 23, edge-wrapping adhesive 9 and Product labelling shape.During attachment, it is only necessary to by flexible circuit board 42, scratch resistant
Adhesive tape 23, edge-wrapping adhesive 9 and Product labelling are mounted according to preset pattern, and easy to operate, precision is higher.White oil line master
The position that flexible circuit board 42 and scratch resistant 23 edge of adhesive tape coincide is set, convenient for further increasing placement accuracy.Coining
The setting of line 29 and white oil line effectively prevents flexible circuit board 42, scratch resistant adhesive tape 23, edge-wrapping adhesive 9 and Product labelling and was mounting
Occur the phenomenon that deviation in journey, improves the uniformity of product quality.
Preferably, 2 back side of bottom case is additionally provided with four hollow studs, each hollow stud is equipped with internal screw thread, hollow stud
It is fixedly connected with bottom case 2, hollow stud is fixedly connected for realizing bottom case and other component, is the practical application of backlight module
It provides convenience.The inner bottom surface of bottom case 2 is set there are four stud bolt hole glue 25, and four stud bolt hole glue 25 are opposite with the position of hollow stud
It answers.Stud bolt hole glue 25 causes backlight module functionality to lose for preventing extraneous dust, dirty, steam entry of backlight module internal
Effect.
Preferably, the rubber shell 1 is equipped with foam double-faced adhesive 81 in side opposite with bottom case 2, foam double-faced adhesive 81 is
The size of square border, square border is adapted with rubber shell 1.The rubber shell 1 is connected by foam double-faced adhesive 81 with protective film 8,
The protective film 8 is for protecting backlight module not by the pollution of dust.If desired display screen is installed, it is only necessary to protective film 8 is removed,
Display screen is mounted directly in foam double-faced adhesive 81.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (10)
1. a kind of backlight module of stable structure, which is characterized in that including rubber shell (1), bottom case (2), light guide plate (3) and side light source
(4), side light source (4) setting is in the side inner surface of bottom case (2), and light guide plate (3) setting is internal in bottom case (2), institute
It states and is equipped with reflective membrane (5) between bottom case (2) and light guide plate (3), the light guide plate (3) successively sets in side opposite with bottom case (2)
There are light-diffusing film (6), lower bright enhancement film (72) and upper bright enhancement film (71), the rubber shell (1) is arranged in upper bright enhancement film (71) and bottom case (2)
Opposite side, the rubber shell (1) are detachably connected with bottom case (2)；Multiple locating pieces (21) are equipped with inside the bottom case (2), respectively
Locating piece (21) side and the side of light guide plate (3) abut against, and the side of the other side and bottom case (2) is detachably connected.
2. a kind of backlight module of stable structure as described in claim 1, which is characterized in that the side of the bottom case (2) is equipped with
Shrinkage pool (26), the locating piece (21) are equipped with shrinkage pool (26) compatible bulge-structure (211).
3. a kind of backlight module of stable structure as claimed in claim 2, which is characterized in that the locating piece (21) is L type knot
Structure, locating piece (21) setting is in the vertex position of light guide plate (3), and the thickness of the light guide plate (3) is greater than locating piece (21)
Thickness.
4. a kind of backlight module of stable structure as described in claim 1, which is characterized in that on the medial surface of the rubber shell (1)
Equipped with card hole (11), the outer surface of the side of the bottom case (2) is equipped with fixture block (27) compatible with card hole.
5. a kind of backlight module of stable structure as claimed in claim 4, which is characterized in that outside the side of the bottom case (2)
Surface is additionally provided with multiple fixed convex blocks (28), and fixed convex block (28) one end and the medial surface of rubber shell (1) abut against, the other end and bottom
The side of shell (2) is fixedly connected, and the fixed convex block (28) and bottom case (2) are integrally formed.
6. a kind of backlight module of stable structure as described in claim 1, which is characterized in that the side light source (4) includes flexibility
Circuit board (42) and the LED light (41) being arranged on flexible circuit board (42), the flexible circuit board (42) are strip structure,
The flexible circuit board (42) is arranged along the side inner surface of bottom case (2), and the side of bottom case (2) is equipped with and flexible circuit board (42)
Compatible through-hole, flexible circuit board (42) pass through through-hole and fit with bottom case (2) back side, and the flexible circuit board (42) is the bottom of at
Shell (2) back side extends outwardly after folding.
7. a kind of backlight module of stable structure as claimed in claim 6, which is characterized in that bottom case (2) back side is in flexibility
Folding position, flexible circuit board (42) and the connecting position of through-hole of circuit board (42) are respectively equipped with scratch resistant adhesive tape (23), described
Flexible circuit board (42) is equipped with protective glue band (24) in side opposite with bottom case (2).
8. a kind of backlight module of stable structure as claimed in claim 7, which is characterized in that bottom case (2) back side is additionally provided with
Pressing line (29), the pressing line (29) are used to preset the position of flexible circuit board (42) and scratch resistant adhesive tape (23).
9. a kind of backlight module of stable structure as described in claim 1, which is characterized in that the side of the bottom case (2) is equipped with
At least one card slot (210), the light-diffusing film (6), lower bright enhancement film (72) and upper bright enhancement film (71) are respectively equipped with and card slot (210)
Compatible detent portion.
10. a kind of backlight module of stable structure as described in claim 1, which is characterized in that the rubber shell (1) with bottom case
(2) opposite side is additionally provided with protective film (8), and the protective film (8) is connected by glue with rubber shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920388379.6U CN209560128U (en) | 2019-03-26 | 2019-03-26 | A kind of backlight module of stable structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920388379.6U CN209560128U (en) | 2019-03-26 | 2019-03-26 | A kind of backlight module of stable structure |
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| Publication Number | Publication Date |
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| CN209560128U true CN209560128U (en) | 2019-10-29 |
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ID=68311568
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920388379.6U Active CN209560128U (en) | 2019-03-26 | 2019-03-26 | A kind of backlight module of stable structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021227752A1 (en) * | 2020-05-13 | 2021-11-18 | 京东方科技集团股份有限公司 | Backlight module and display device |
-
2019
- 2019-03-26 CN CN201920388379.6U patent/CN209560128U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021227752A1 (en) * | 2020-05-13 | 2021-11-18 | 京东方科技集团股份有限公司 | Backlight module and display device |
| US20220276531A1 (en) * | 2020-05-13 | 2022-09-01 | Beijing Boe Display Technology Co., Ltd. | Backlight module and display device |
| US11747674B2 (en) * | 2020-05-13 | 2023-09-05 | Beijing Boe Display Technology Co., Ltd. | Backlight module and display device |
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