CN205880271U - Light guide plate and backlight module - Google Patents
Light guide plate and backlight module Download PDFInfo
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- CN205880271U CN205880271U CN201620794262.4U CN201620794262U CN205880271U CN 205880271 U CN205880271 U CN 205880271U CN 201620794262 U CN201620794262 U CN 201620794262U CN 205880271 U CN205880271 U CN 205880271U
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- light guide
- guide plate
- plane
- face
- backlight module
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Abstract
The utility model discloses a light guide plate and backlight module, backlight unit include the backplate, are fixed in a plurality of light guide plates on this backplate and are fixed in each income plain noodles that the lamp strip of the income plain noodles of light guide plate one side, each light guide plate include perpendicular its bottom surface with the terminal surface, reach the play plain noodles that relative its bottom surface slopes, going into the plain noodles and setting up relatively with the terminal surface, each light guide plate forms 1 the 1st receiving surface and the 2nd receiving surface in the one end of going into the plain noodles, and the light guide plate still is formed with first inclined plane and second inclined plane, direction to the terminal surface reduces the thickness of light guide plate gradually from first inclined plane. The utility model discloses can make the subregion between the light guide plate noiseless, it is bright dark uneven to reduce concatenation department, in the slimming that realizes realizing the LCD TV when HDR high image quality shows.
Description
Technical field
This utility model relates to technical field of liquid crystal display, particularly relates to a kind of light guide plate and backlight module.
Background technology
For realizing HDR (high dynamic range images) multi-section display of LCD TV, straight-down negative or side entrance back can be used
The modes such as module.
Traditional straight-down negative realizes HDR and shows, as it is shown in figure 1,12 indication lamp bars are fixed on backboard in figure, lamp bar is permissible
Carry out subregion to light, a region of the lamp bar correspondence display floater 11 in each region, as lamp bead 101 can represent corresponding D6 district
Territory, is controlled sectored light bar by drive circuit, and the subregion that can realize HDR shows.Arrive yet with straight-down negative lamp bead
Diffuser plate and diaphragm etc. need certain light mixing distance, and its OD (optical density) value is the biggest, therefore cannot realize LCD TV
Slimming demand, and owing to lamp bead has certain lighting angle, the light source between each subregion must influence each other, it is impossible to real
The most real HDR.
Traditional side entering type realizes HDR and shows, as in figure 2 it is shown, two lamp bars 22 and 23, is entered by the both sides of light guide plate 21 respectively
Light, it enters light mode, and to determine its adjustable area less, if being parallel to the adjustable district that YouNGe region, lamp bar direction is adjustable, the most total
Territory is at most 2N region.
Another kind of side entering type realizes multi-section display, its by the one of side entering type piece of light guide plate with light guide plate generation of polylith strip
Replacing, each piece of light guide plate can be irradiated by the lamp bar lighted of multi partition by one, finally realizes the multi-section display of relatively multizone, but for solving
The certainly shadow of light guide plate stitching portion and lamp bar arrangement problem, it needs backboard is carried out special transformation, improves the processing of backboard
Difficulty, and liquid crystal display slimming demand cannot be met.
Utility model content
Main purpose of the present utility model is to provide a kind of light guide plate and backlight module, it is intended to solve light guide plate stitching portion by
The brightness unevenness that lamp bar is installed and excesssive gap brings, and the technical problem that HDR slimming shows cannot be realized.
For achieving the above object, the utility model proposes a kind of light guide plate, including incidence surface and the end of its bottom surface vertical
Face and the exiting surface of its inclined bottom surface relative, described incidence surface is oppositely arranged with end face；
Described light guide plate forms an adapting table in one end of incidence surface, and this adapting table includes the first continuing surface and is perpendicular to the
Second continuing surface of one continuing surface, the first continuing surface connects into bright finish；
Described light guide plate is also formed with the first inclined-plane and the second inclined-plane, this first inclined-plane connect the second continuing surface with described go out
Bright finish, this second inclined-plane connects exiting surface and described end face；
The thickness of described light guide plate is gradually reduced to the direction of end face from adapting table.
Further, described first inclined-plane and the second inclined-plane all post reflector plate.
Further, described first inclined-plane and the second inclined-plane are provided with astigmatism particle.
Further, the surface of described exiting surface is formed with rhombus or arc raised line.
This utility model also provides for a kind of backlight module, multiple light guide plates including backboard, being fixed on this backboard and solid
Due to the lamp bar of the incidence surface side of each described light guide plate, described light guide plate is above-described light guide plate；
One light guide plate forms one end of described end face and is overlapped in the first continuing surface of adjacent light guide plate, the end face of a light guide plate
Contact with the second continuing surface of adjacent light guide plate.
Further, described lamp bar includes that multiple lamp bead, each lamp bead are provided with a light-emitting area, and this light-emitting area is just penetrating light guide plate
Incidence surface.
Further, the highest 0.1mm of height of light-emitting area described in the aspect ratio of described incidence surface.
Further, the bottom of described light guide plate is provided with site.
Light guide plate of the present utility model and backlight module, by light guide plate being arranged to the wedge structure with adapting table,
Spliced multiple on one piece of backboard by adapting table by light guide plate and lamp bar, finally realize disturbing between light guide plate internal zone dividing
Reducing, the subregion between light guide plate and light guide plate is noiseless, light guide plate and the stitching portion brightness uniformity of light guide plate, is realizing HDR
While high image quality shows, it is achieved the slimming of LCD TV, existing backboard of can directly arranging in pairs or groups uses, it is not necessary to backboard is carried out spy
Different processing, reduces cost.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, the accompanying drawing in describing below is only
It is embodiments more of the present utility model, for those of ordinary skill in the art, in the premise not paying creative work
Under, it is also possible to other accompanying drawing is obtained according to the structure shown in these accompanying drawings.
Fig. 1 is that the straight-down negative of prior art realizes HDR and shows the structural representation of an embodiment；
Fig. 2 is that the side entering type of prior art realizes HDR and shows the structural representation of an embodiment；
Fig. 3 is the structural representation of backlight module one embodiment of the present utility model；
Fig. 4 is the side view of Fig. 3；
Fig. 5 is the structural representation that in Fig. 3, light guide plate and lamp bar combine；
Fig. 6 is the side view of Fig. 5.
Drawing reference numeral illustrates:
| Label | Title | Label | Title |
| 31 | Lamp bar | 3331 | First continuing surface |
| 311 | Lamp bead | 3332 | Second continuing surface |
| 3111 | Light-emitting area | 334 | Second inclined-plane |
| 33 | Light guide plate | 335 | Exiting surface |
| 331 | Incidence surface | 336 | Bottom surface |
| 332 | First inclined-plane | 337 | End face |
| 333 | Adapting table |
The realization of this utility model purpose, functional characteristics and advantage will in conjunction with the embodiments, are described further referring to the drawings.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present utility model rather than all
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not paying creative work premise
Lower obtained every other embodiment, broadly falls into the scope of this utility model protection.
It is to be appreciated that directional instruction (such as up, down, left, right, before and after ...) in this utility model embodiment
It is only used for explanation relative position relation under a certain particular pose (as shown in drawings) between each parts, motion conditions etc., as
When really this particular pose changes, then directionality instruction changes the most therewith.
It addition, the description relating to " first ", " second " etc. in this utility model is only used for describing purpose, and it is not understood that
For indicating or imply its relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ",
The feature of " second " can express or implicitly include at least one this feature.It addition, the technical side between each embodiment
Case can be combined with each other, but must be based on those of ordinary skill in the art are capable of, when the combination of technical scheme
Occur conflicting will be understood that the combination of this technical scheme does not exists, the most not in this utility model requirement when maybe cannot realize
Protection domain within.
This utility model provides a kind of light guide plate and backlight module, it is intended to solve light guide plate stitching portion installed by lamp bar and
The brightness unevenness that excesssive gap brings, and the technical problem that HDR slimming shows cannot be realized.
Refer to Fig. 6, in this utility model one embodiment, light guide plate 33 is provided with a bottom surface being perpendicular to light guide plate 33
The incidence surface 331 of 336 and end face 337, and the exiting surface 335 that the bottom surface 336 of a relative light guide plate 33 tilts, incidence surface
331 with end face 337 in being oppositely arranged.Each light guide plate 33 forms an adapting table 333, adapting table 333 in one end of incidence surface 331
Including the first continuing surface 3331 and the second continuing surface 3332 being perpendicular to the first continuing surface 3331, the first continuing surface 3331 connects into
Bright finish 331.
The design of the first continuing surface 3331 is easy to splicing to make light guide plate 33 and eliminates stitching portion lamp bead 311 and cause
Brightness disproportionation, the first continuing surface 3331 posts reflector plate, so that entering the luminous energy of light guide plate 33 as much as possible via exiting surface 335
Scatter out, reduce luminous energy and scatter and disappear.The shape of the first continuing surface 3331 is determined by the bottom surface of light guide plate 33, general light guide plate 33
Bottom surface is a plane, and the most correspondingly the first continuing surface 3331 also should be set to a plane；If the bottom surface of light guide plate 33 is one downward
The arcwall face protruded, the most correspondingly the first continuing surface 3331 should be configured to house the arc of the lower arcuate surface of this light guide plate 33
Face.The plane of a second continuing surface 3332 generally rule, in order to preferably counterface 337.
Further referring to Fig. 6, between the second continuing surface 3332 and exiting surface 335, it is formed with the first inclined-plane 332, exiting surface
Being formed with the second inclined-plane 334 between 335 and end face 337, the first inclined-plane 332 connects the second continuing surface 3332 and described exiting surface
335, the second inclined-plane 334 connects described exiting surface 335 and described end face 337；First inclined-plane 332 be the second continuing surface 3332 towards
The extension of exiting surface 335, its angle and size are adjustable, specifically by assembling effect depending on, if the stitching portion of backlight module is dark, can
Make the angle between the second continuing surface 3332 and exiting surface 335 larger, and then increase the surface area on the first inclined-plane 332, to increase
Add the brightness of stitching portion；If stitching portion is brighter, reflector plate, simultaneously adjustable the second continuing surface can be pasted on the first inclined-plane 332
Angle between 3332 and exiting surface 335, and then reduce the surface area on the first inclined-plane 332, or silk-screen on the first inclined-plane 332
Astigmatism particle, to weaken the light intensity of junction；In like manner, the second inclined-plane 334 is the end face 337 extension towards exiting surface 335, its angle
Degree and size can also be adjusted according to the brightness of stitching portion, its Principles of Regulation and control method and the tune on the first inclined-plane 332
Joint principle is consistent with control method, does not repeats them here.
This exiting surface 335 connecting end surface 337, exiting surface 335 is the angle of wedge design of bottom surface 336, and the angle of this angle of wedge is by entering
The height of bright finish 331, adapting table 333 and end face 337 determines, shows in order to adjust the brightness of bright finish 335.The thickness of light guide plate 33
Degree tapers into the direction of end face 337 from adapting table 333, the whole wedge shaped shape of light guide plate 33.
It should be understood that in order to reduce the light interference between the internal different subregions of light guide plate 33 further, it is achieved subregion
The HDR of display, the surface of described exiting surface 335 uses receives the stronger rhombus of photosensitiveness or cambered design.
Refer to Fig. 3 to Fig. 4, in this utility model one embodiment, backlight module includes a backboard (not shown) and consolidates
Due to multiple light guide plates 33 of this backboard, and it is fixed on the lamp bar 31 of incidence surface 331 side of each described light guide plate 33, each
Individual light guide plate 33 is fixed on described backboard by locating dowel, or is pasted on described backboard with the form of seccotine.Lamp bar 31 is solid
Side due to the incidence surface 331 of light guide plate 33, it is also possible to be directly fixed on backboard with lower surface, provides light to light guide plate 33
Source.One light guide plate 33 forms one end of described end face 337 and is overlapped in the first continuing surface 3331 of adjacent light guide plate 33, light guide plate 33
End face contact with the second continuing surface 3332 of adjacent light guide plate 33.
When light guide plate 33 splices, first first piece of light guide plate 33 is fixed on standard-sized backboard (not shown)
Low order end, is then overlapped in the bottom surface 336 of second piece of light guide plate 33 on the first continuing surface 3331 of first piece of light guide plate 33, makes
Second piece of light guide plate 33 is along the first continuing surface 3331 sliding, until the end face 337 of the second light guide plate 33 and first piece of light guide plate 33
The second continuing surface 3332 contact, then second piece of light guide plate 33 is fixed on the positioning, is repeated in above-mentioned action, until complete
Become the splicing of all light guide plates 33, simple to operate, it is simple to install, it is possible to reduce the interference between light guide plate internal zone dividing, guide-lighting
Subregion between plate 33 is noiseless, and stitching portion brightness unevenness degree is substantially reduced, and can realize realizing while HDR high image quality shows
The slimming of LCD TV.
The light guide plate of the present embodiment and backlight module, by being arranged to the wedge shape knot with adapting table 333 by light guide plate 33
Structure, is spliced multiple in one piece of backboard by adapting table 333 by light guide plate 33 and lamp bar 31, finally realizes part in light guide plate 33
Between district, interference reduces, and the subregion between light guide plate 33 is noiseless, and stitching portion brightness unevenness is substantially reduced, and draws realizing HDR height
While matter shows, it is achieved the slimming of LCD TV, existing backboard of can directly arranging in pairs or groups uses, and reduces cost.
Referring to Fig. 5 and Fig. 6, lamp bar 31 includes the multiple lamp bead 311 being arranged side by side, and lamp bead 311 can be light-emitting diodes
Pipe, it is also possible to being electroluminescent lamp, lamp bead 311 is provided with a light-emitting area 3111, in order to the luminous energy making lamp bead 311 send imports substantially
In light guide plate 33, all luminous energy that lamp bead 311 produces by concentration piece can be set in the periphery of lamp bead 311 and concentrate on light-emitting area
3111, simultaneously in order to reduce scattering and disappearing of luminous energy, light-emitting area 3111 should just penetrate the incidence surface 331 of light guide plate 33, to shorten luminescence
Face 3111 is to the air line distance of incidence surface 331, and just is easy to make lamp bar 31 and light guide plate to incidence surface 331 by light-emitting area 3111
33 are in same level, the splicing of follow-up light guide plate 33.
Correspondingly, in order to the light making lamp bead 311 send is absorbed by light guide plate 33 as much as possible, the incidence surface of light guide plate 33
The height of 331 should be higher than that the light-emitting area 3111 at least 0.1mm of lamp bead 311.
Further, in order to according to different lightness environment, be automatically adjusted the brightness of liquid crystal display, backlight module is wanted can
The luminance signal detected according to luminance sensor, is adjusted lamp bar 31 and light guide plate 33, uses voltage stabilizing electricity due to general
Road, so strengthening or weaken the luminous intensity of lamp bar continually, not only operates complexity, and easily causes the damage of lamp bar, increase
Adding cost, the most general mode of operation is the site arranging in the bottom of light guide plate and can adjusting light trend, in order to leading
When brightness is abundant in tabula rasa 33, opens site or the reflector plate being attached to light guide plate 33 bottom surface 336 is removed, carrying out astigmatism, enter
And reduce the OD value in light guide plate 33；When OD value in light guide plate 33 is less, close site, increase reflector plate to improve rapidly
OD value in light guide plate 33.
Further referring to Fig. 3, multiple light guide plates 33 of backlight module and lamp bar 31 share same backboard (not shown).
When backlight module is installed, in order to keep the exiting surface of each light guide plate 33 of the backlight module after installing to be positioned at same level
In face, need the multiple light guide plates 33 by splicing to be jointly installed on the horizontal backboard of same, and this backlight module can be direct
Existing backboard of arranging in pairs or groups uses, it is not necessary to backboard is carried out special processing, reduces cost.
The foregoing is only preferred embodiment of the present utility model, not thereby limit the scope of the claims of the present utility model,
Every under utility model of the present utility model is conceived, utilize the equivalent structure that this utility model description and accompanying drawing content are made
Conversion, or directly/be indirectly used in other relevant technical fields and be included in scope of patent protection of the present utility model.
Claims (8)
1. a light guide plate, it is characterised in that include incidence surface its inclined bottom surface relative with end face and of its bottom surface vertical
Exiting surface, described incidence surface is oppositely arranged with end face；
Described light guide plate forms an adapting table in one end of incidence surface, and this adapting table includes the first continuing surface and is perpendicular to first and holds
Second continuing surface of junction, the first continuing surface connects into bright finish；
Described light guide plate is also formed with the first inclined-plane and the second inclined-plane, this first inclined-plane connect the second continuing surface with described go out light
Face, this second inclined-plane connects exiting surface and described end face；
The thickness of described light guide plate is gradually reduced to the direction of end face from adapting table.
Light guide plate the most according to claim 1, it is characterised in that described first inclined-plane and the second inclined-plane all post reflection
Sheet.
Light guide plate the most according to claim 1, it is characterised in that described first inclined-plane and the second inclined-plane are provided with astigmatism grain
Son.
Light guide plate the most according to claim 1, it is characterised in that the surface of described exiting surface is formed with rhombus or arc is convex
Bar.
5. a backlight module, it is characterised in that include backboard, the multiple light guide plates being fixed on this backboard and be fixed on each
The lamp bar of the incidence surface side of described light guide plate, most light guide plates are the light guide plate described in any one of Claims 1-4；
One light guide plate forms one end of described end face and is overlapped in the first continuing surface of adjacent light guide plate, the end face of a light guide plate and phase
Second continuing surface contact of adjacent light guide plate.
Backlight module the most according to claim 5, it is characterised in that described lamp bar includes that multiple lamp bead, each lamp bead set
Having a light-emitting area, this light-emitting area is just penetrating the incidence surface of light guide plate.
Backlight module the most according to claim 6, it is characterised in that the height of light-emitting area described in the aspect ratio of described incidence surface
Spend the highest 0.1mm.
Backlight module the most according to claim 5, it is characterised in that the bottom of described light guide plate is provided with site.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620794262.4U CN205880271U (en) | 2016-07-25 | 2016-07-25 | Light guide plate and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620794262.4U CN205880271U (en) | 2016-07-25 | 2016-07-25 | Light guide plate and backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205880271U true CN205880271U (en) | 2017-01-11 |
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ID=57699735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620794262.4U Active CN205880271U (en) | 2016-07-25 | 2016-07-25 | Light guide plate and backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205880271U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023071445A1 (en) * | 2021-10-28 | 2023-05-04 | 荣耀终端有限公司 | Module integrated with optical sensor, display panel, and display apparatus |
-
2016
- 2016-07-25 CN CN201620794262.4U patent/CN205880271U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023071445A1 (en) * | 2021-10-28 | 2023-05-04 | 荣耀终端有限公司 | Module integrated with optical sensor, display panel, and display apparatus |
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| GR01 | Patent grant |