CN207067611U - A kind of backlight module and light guide plate - Google Patents
A kind of backlight module and light guide plate Download PDFInfo
- Publication number
- CN207067611U CN207067611U CN201721125556.9U CN201721125556U CN207067611U CN 207067611 U CN207067611 U CN 207067611U CN 201721125556 U CN201721125556 U CN 201721125556U CN 207067611 U CN207067611 U CN 207067611U
- Authority
- CN
- China
- Prior art keywords
- light guide
- guide plate
- projection
- convex block
- backlight module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
Abstract
The utility model discloses a kind of backlight module and light guide plate, the backlight module includes lower frame, light guide plate and locating convex block, and the light guide plate is located at the lower inframe；The locating convex block includes the first projection, the second projection and the 3rd projection, and first projection, the second projection and the 3rd projection are respectively arranged on each side of the light guide plate；First projection is higher by the light guide plate exiting surface.When assembling light guide plate, each locating convex block is closely attached on each side of lower frame respectively, locating convex block is directly adjacent to the positioning and fixation of the i.e. achievable light guide plate in each side of lower frame by assembler, and a wherein side for light guide plate is not provided with locating convex block, so as to have enough expansion spaces after light guide plate is heated；And the first projection is higher than light guide plate, when assembling optical film material, assembler is by optical film material top to the first projection projection, you can realizes the positioning and fixation of optical film material.It has simple to operate, cost-effective, workpiece accurate positioning, high reliability.
Description
Technical field
A kind of technical field of liquid crystal display is the utility model is related to, more specifically to a kind of backlight module and leaded light
Plate.
Background technology
At present, the display screen of vehicle-mounted product large-sized direction increasingly in is developed, part therein such as light guide plate and
The size of optical film material also accordingly increases, because part dimension is bigger than normal, so product, when by temperature change, it expands with heat and contract with cold
Degree also increases accordingly, and engineer is in deisgn product, and the expansion clearance reserved to these parts also accordingly increases.And
Because gap is bigger, if these parts do not have good location mechanism, assembler just can not accurately position these portions
Part, thus occur that product quality is uneven, it sometimes appear that the situation that product reliability is inconsistent, causes optical film material
Wrinkle, effect is bad etc..Light guide plate or optical film material fragmentation are even resulted in, causes product entirely ineffective.
Utility model content
Technical problem to be solved in the utility model there is provided a kind of backlight module, and it is on each side of light guide plate
It is respectively equipped with the first projection, the second projection and the 3rd projection, exiting surface of first projection above light guide plate.Assemble light guide plate
When, each locating convex block is closely attached on each side of lower frame respectively, and locating convex block is directly adjacent to each side of lower frame by assembler
The positioning and fixation of light guide plate can be achieved, it is guide-lighting because three sides are equipped with locating convex block after light guide plate expanded by heating
Plate can only expand to another side for being not provided with locating convex block, that is, ensure that light guide plate has enough expansion spaces；And first is convex
Block is higher than light guide plate, when assembling optical film material, projection of the assembler by optical film material top to the first projection, i.e.,
The positioning and fixation of optical film material can be achieved.Backlight module provided by the utility model has simple to operate, needs not move through spy
Do not train, can save man-hour, save production cost；Workpiece accurate positioning, product do not cause fold or optics when heated
Fragmentation, high reliability.
The utility model additionally provides a kind of light guide plate.
Technical problem to be solved in the utility model is achieved by the following technical programs：
In order to solve the above technical problems, the utility model provides a kind of backlight module, it includes lower frame, light guide plate and determined
Position projection, the light guide plate are located at the lower inframe；The locating convex block includes the first projection, the second projection and the 3rd projection,
First projection, the second projection and the 3rd projection are respectively arranged on each side of the light guide plate；First projection is higher by
The exiting surface of the light guide plate.
Further, the locating convex block is shaped on the light guide plate.
Further, first projection, the second projection and the 3rd projection are respectively arranged on each apex of the light guide plate.
Further, first projection is cuboid.
Further, the light guide plate is provided with groove with the locating convex block junction.
Further, the backlight module also includes being arranged at the optical film material above the light guide plate, the light guide plate
The upper surface of one side is provided with step, and the optical film material is provided with concave part mutually corresponding with step.
Further, first projection is located at the lower left corner of the light guide plate.
Further, the step is provided with double faced adhesive tape, and the concave part is fixed by the double faced adhesive tape on the step.
The utility model additionally provides a kind of light guide plate, and the first projection, are respectively equipped with each side of the light guide plate
Two projections and the 3rd projection, first projection are higher by the exiting surface of the light guide plate.
Further, the upper surface of second projection and the upper surface of the 3rd projection and the light extraction of the light guide plate
Face is concordant.
The utility model has the advantages that：The first projection, the second projection are respectively equipped with each side of light guide plate
With the 3rd projection, exiting surface of first projection above light guide plate.When assembling light guide plate, under each locating convex block is closely attached on respectively
On each side of frame, locating convex block is directly adjacent to the positioning and fixation of the i.e. achievable light guide plate in each side of lower frame by assembler,
After light guide plate expanded by heating, because three sides are equipped with locating convex block, light guide plate can only be to being not provided with the another of locating convex block
One side expands, that is, ensure that light guide plate has enough expansion spaces；And the first projection is higher than light guide plate, optics is assembled
During membrane material, projection of the assembler by optical film material top to the first projection, you can realize the positioning and fixation of optical film material.
Backlight module provided by the utility model has simple to operate, needs not move through special training, can save man-hour, saving is produced into
This；Workpiece accurate positioning, product do not cause fold or optics fragmentation, high reliability when heated.
When backlight module breaks down and temperature is too high, light guide plate can acutely expand, and the dilation dimension to light guide plate surpasses
It is violent in light guide plate by being respectively provided with groove in the junction of light guide plate and each locating convex block when crossing default expansion clearance
During expansion, locating convex block stress concentration can occur due to groove, be burst apart at groove, so that locating convex block comes off, without
Whole light guide plate is damaged, reduces loss.
It is additionally provided with step on the upper surface of light guide plate side, and is then provided with optical film material corresponding with the step recessed
Groove portion, the concave part of optical film material is realized positioning and fixed by the step, more preferably, double faced adhesive tape is additionally provided with the step,
The concave part of optical film material is fixed on step by double faced adhesive tape.More preferably, the step can be multilayer, each layer of optical film
Material has a concave part to correspond, and preferably can position and fix optical film material, big chi in can further preventing
Very little optical film material positioning is difficult, the problem of easily movement.
Brief description of the drawings
Fig. 1 is a kind of back light module unit structure schematic diagram provided by the utility model.
Fig. 2 is the light conducting plate structure schematic diagram in Fig. 1.
Fig. 3 is the decomposition view of light guide plate and optical film material.
Fig. 4 is another back light module unit structure schematic diagram provided by the utility model.
Fig. 5 is at Fig. 4 A, at B, enlarged drawing at C.
Fig. 6 is the light conducting plate structure schematic diagram in Fig. 4.
Embodiment
The utility model is described in detail with reference to embodiment, embodiment is only of the present utility model preferred real
Mode is applied, is not to restriction of the present utility model.
Fig. 1 to Fig. 3 is referred to, the utility model provides a kind of backlight module, and it includes lower frame 1, light guide plate 2, positioning
Projection 21 and optical film material 3, the light guide plate 2 is in the lower frame 1；The optical film material 3 is on the light guide plate 2；
The locating convex block 21 includes the first projection 211, the second projection 212 and the 3rd projection 213, and first projection 211, second is convex
The projection 213 of block 212 and the 3rd is respectively arranged on each side of the light guide plate 2；First projection 211 is higher by the light guide plate
2 exiting surface.When assembling light guide plate 2, each locating convex block 21 is closely attached on 1 each side of lower frame respectively, and assembler is straight
The positioning and fixation for the i.e. achievable light guide plate 2 in each side that locating convex block 21 is adjacent to lower frame 1 are connect, when the expanded by heating of light guide plate 2
Afterwards, because three sides are equipped with locating convex block 21, light guide plate 2 can only expand to another side for being not provided with locating convex block 21,
It ensure that light guide plate 2 has enough expansion spaces；And the first projection 211 is higher than light guide plate 2, and optical film material 3 in
The corresponding position of first projection 211 is provided with correspondence portion 31, and when assembling optical film material 3, assembler pushes up optical film material 3 to the first projection
211 projection, you can realize the positioning and fixation of optical film material 3.Backlight module provided by the utility model has behaviour
Make simply, to need not move through special training, can save man-hour, save production cost；Workpiece accurate positioning, product do not draw when heated
Play fold or optics fragmentation, high reliability.The present embodiment is preferably that only the first projection 211 is higher by the leaded light
The exiting surface of plate 2, in other embodiments, the second projection 212 and the 3rd projection 213 can also be higher by the light extraction of the light guide plate 2
Face, although such structure can be easier to position and fixed optical film material 3, but its cost is also higher.
Fig. 4 and Fig. 5 are referred to, Fig. 5 A are enlarged drawing at Fig. 4 A, and Fig. 5 B are enlarged drawing at Fig. 4 B, and Fig. 5 C are to amplify at Fig. 4 C
Figure.The present embodiment is preferably that first projection 211, the second projection 212 and the 3rd projection 213 are respectively arranged on into the light guide plate
2 each apex, each locating convex block 21 can abut two sides of lower frame 1, and it can fix X, Y both direction, and it is positioned
More precisely, it is less susceptible to move, further improves the reliability of product.Fig. 5 A are referred to, more preferably, first projection 211 is set
In the light guide plate apex and be only located on a side of light guide plate 2, itself and the projection of the second projection 212 or the 3rd
213 projections are concordant.
Referring to Fig. 4, preferably, the side that the light guide plate 2 is not provided with locating convex block 21 is provided with pad adhesive tape 214, can
To improve the positioning precision of light guide plate 2 and stability, in its expanded by heating, because pad adhesive tape 214 has certain elasticity, lead
Tabula rasa 2 can be to the extruding of pad adhesive tape 214 direction.
The locating convex block 21 of the present embodiment is preferably formed in one on the light guide plate 2, in other embodiments, positioning
Projection 21 can also be non-integrally formed, that is, a part being assemblied on light guide plate 2；Compared to the knot of non-integral shaping
Structure, integrally formed its fastness of locating convex block 21 are good, it is not easy to come off, further improve the reliability of product.
Preferably, when backlight module breaks down and temperature is too high, light guide plate 2 can acutely expand, to the swollen of light guide plate 2
When expansion rule cun exceedes default expansion clearance, by being respectively provided with groove 22 in the junction of light guide plate 2 and each locating convex block 21,
When light guide plate 2 acutely expands, locating convex block 21 stress concentration can occur due to groove 22, be burst apart at groove 22, so as to
Locating convex block 21 is come off, without damaging whole light guide plate 2, reduce loss.
Fig. 3 is referred to Fig. 6, it is preferable that it is additionally provided with step 23 on the upper surface of the side of light guide plate 2, and optical film material 3
On be then provided with the concave part 32 corresponding with the step 23, the concave part 32 of optical film material 3 is positioned by the step 23 to realize
And fixation, more preferably, double faced adhesive tape 24 is additionally provided with the step 23, the concave part 32 of optical film material 3 is fixed on by double faced adhesive tape 24
On step 23.More preferably, the step 23 can be multilayer, and each layer of optical film material 3 has a concave part 32 in contrast
Should, optical film material 3 preferably can be positioned and fixed, can further prevent middle large scale optical film material 3 from positioning difficulty, it is easily mobile
The problem of.
Preferably, first projection 211 is cuboid, and the corresponding portion 31 of optical film material 3 can be realized by the cuboid
The positioning and fixation of both direction, increase the stability of its fixation.
Preferably, first projection 211 is located at the lower left corner of the light guide plate 2, when optical film material 3 cuts concave part 32
When can cut correspondence portion 31 together, save man-hour and cost, the big I of rectangular parallelepiped structure designed according to actual conditions, to the greatest extent may be used
The length that first projection 211 contacts with light guide plate 2 can be increased so that optical film material 3 is more easily aligned the first projection 211
Projection, more accurately positioned with realizing；Second projection 212 is located at the upper left corner of the light guide plate 2；Described 3rd is convex
Block 213 is located at the upper right corner of the light guide plate 2.
The utility model additionally provides a kind of light guide plate 2, and the first projection is respectively equipped with each side of the light guide plate 2
211st, the second projection 212 and the 3rd projection 213, first projection 211 are higher by the exiting surface of the light guide plate 2.With light guide plate 2
When, each locating convex block 21 is closely attached on 1 each side of lower frame respectively, and locating convex block 21 is directly adjacent to lower frame by assembler
1 each side is the positioning and fixation that light guide plate 2 can be achieved, and after 2 expanded by heating of light guide plate, is determined because three sides are equipped with
Position projection 21, light guide plate 2 can only expand to another side for being not provided with locating convex block 21, that is, it is enough to ensure that light guide plate 2 has
Expansion space；And the first projection 211 is higher than light guide plate 2, when assembling optical film material 3, assembler pushes up optical film material 3
To the projection of the first projection 211, you can realize the positioning and fixation of optical film material 3.Backlight provided by the utility model
Module has simple to operate, needs not move through special training, can save man-hour, saves production cost；Workpiece accurate positioning, product exist
Fold or optics fragmentation, high reliability are not caused when heated.
Preferably, the upper surface of second projection 212 and the upper surface of the 3rd projection 213 and the light guide plate 2
Exiting surface it is concordant, such structure is being easier to produce, reduce production cost.
Above example only expresses embodiment of the present utility model, and its description is more specific and detailed, but can not
Therefore the limitation to the utility model patent scope is interpreted as, as long as being obtained using the form of equivalent substitution or equivalent transformation
Technical scheme, all should fall within the scope of protection of the utility model.
Claims (10)
1. a kind of backlight module, it is characterised in that it includes：
Lower frame；
Light guide plate, it is located at the lower inframe；
Locating convex block, it includes the first projection, the second projection and the 3rd projection, and first projection, the second projection and the 3rd are convex
Block is respectively arranged on each side of the light guide plate；First projection is higher by the exiting surface of the light guide plate.
2. a kind of backlight module according to claim 1, it is characterised in that the locating convex block is shaped in described lead
On tabula rasa.
3. a kind of backlight module according to claim 1, it is characterised in that first projection, the second projection and the 3rd
Projection is respectively arranged on each apex of the light guide plate.
4. a kind of backlight module according to claim 1, it is characterised in that first projection is cuboid.
5. a kind of backlight module according to claim 1, it is characterised in that the light guide plate is connected with the locating convex block
Place is provided with groove.
6. a kind of backlight module according to claim 1, it is characterised in that the backlight module is also described including being arranged at
Optical film material above light guide plate, the upper surface of the side of light guide plate one are provided with step, and the optical film material is provided with and platform
The mutually corresponding concave part of rank.
7. a kind of backlight module according to claim 6, it is characterised in that first projection is located at the light guide plate
The lower left corner.
8. a kind of backlight module according to claim 6, it is characterised in that the step is provided with double faced adhesive tape, described recessed
Groove portion is fixed by the double faced adhesive tape on the step.
9. a kind of light guide plate, it is characterised in that the first projection, the second projection and are respectively equipped with each side of the light guide plate
Three projections, first projection are higher by the exiting surface of the light guide plate.
10. a kind of light guide plate according to claim 9, it is characterised in that the upper surface of second projection and described
The upper surface of three projections is concordant with the exiting surface of the light guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721125556.9U CN207067611U (en) | 2017-09-04 | 2017-09-04 | A kind of backlight module and light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721125556.9U CN207067611U (en) | 2017-09-04 | 2017-09-04 | A kind of backlight module and light guide plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207067611U true CN207067611U (en) | 2018-03-02 |
Family
ID=61514602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721125556.9U Active CN207067611U (en) | 2017-09-04 | 2017-09-04 | A kind of backlight module and light guide plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207067611U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108572484A (en) * | 2018-06-07 | 2018-09-25 | 伟志光电（深圳）有限公司 | A kind of vehicle-mounted backlight of bilateral entering light |
| CN110989067A (en) * | 2019-05-28 | 2020-04-10 | 中国电子科技集团公司第五十五研究所 | Low-cost high-reliability optical combination structure |
-
2017
- 2017-09-04 CN CN201721125556.9U patent/CN207067611U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108572484A (en) * | 2018-06-07 | 2018-09-25 | 伟志光电（深圳）有限公司 | A kind of vehicle-mounted backlight of bilateral entering light |
| CN110989067A (en) * | 2019-05-28 | 2020-04-10 | 中国电子科技集团公司第五十五研究所 | Low-cost high-reliability optical combination structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207067611U (en) | A kind of backlight module and light guide plate | |
| CN107448814A (en) | Planar illuminating device | |
| WO2021212705A1 (en) | Light leakage prevention tiling screen, and combined screen thereof | |
| KR102609458B1 (en) | Liquid crystal display device | |
| CN104412314A (en) | Display device and television receiver device | |
| CN103629589B (en) | Reflective sheet locating structure, backlight module and display equipment | |
| CN206757253U (en) | Lighting device and liquid crystal display device | |
| CN105044997A (en) | Liquid crystal display panel, a preparation method thereof and liquid crystal display device | |
| CN104913240A (en) | Backlight module and liquid crystal displayer | |
| US20130258232A1 (en) | Middle Frame and Liquid Crystal Display Module | |
| CN104235700B (en) | A kind of LED-backlit module | |
| CN208488910U (en) | A kind of anti-translucent construction of display screen | |
| CN104252062A (en) | Display substrate, manufacturing method for same and display device | |
| CN206096706U (en) | Light guide plate fixed knot structure, backlight unit and LCD | |
| CN106598180B (en) | The heat dissipation board mounting structure and interactive intelligent tablet computer of interactive intelligent tablet computer | |
| CN113934037B (en) | Display device | |
| CN215006185U (en) | Light guide plate limiting module and backlight module | |
| CN106033132A (en) | Optical diaphragm and backlight module | |
| US8467010B2 (en) | Liquid crystal display module | |
| CN211123558U (en) | Display device | |
| CN101377590B (en) | Backlight module unit and applications thereof | |
| CN103728687A (en) | Light guide plate, backlight module and display device | |
| CN107942568A (en) | Liquid crystal display device and its backlight module | |
| CN203480168U (en) | Backlight module and rubber frame thereof | |
| CN206990850U (en) | A kind of backlight module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |