CN206248972U - Television backlight module and tv display screen - Google Patents
Television backlight module and tv display screen Download PDFInfo
- Publication number
- CN206248972U CN206248972U CN201621404337.XU CN201621404337U CN206248972U CN 206248972 U CN206248972 U CN 206248972U CN 201621404337 U CN201621404337 U CN 201621404337U CN 206248972 U CN206248972 U CN 206248972U
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- Prior art keywords
- guide plate
- light guide
- light
- backlight module
- stem
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Abstract
The utility model discloses a kind of television backlight module and tv display screen, wherein, the television backlight module includes backboard, at least one light guide plate group and control unit, each light guide plate group includes the polylith light guide plate being successively set in the first direction on the backboard, each light guide plate is respectively provided with stem and afterbody relative in said first direction, light guide plate described in polylith is set along first direction head and the tail overlap joint, and in light guide plate described in adjacent two, the afterbody of light guide plate described in is overlapped in the stem of another light guide plate；Wherein, the end face where the stem of each light guide plate is provided with luminescence unit, and each light guide plate stem is incidence surface；Described control unit is electrically connected with each luminescence unit, is used to control each luminescence unit to light respectively, it is intended to improve the contrast of dynamic image.
Description
Technical field
The utility model is related to field of display devices, more particularly to a kind of television backlight module and tv display screen.
Background technology
Liquid crystal display is used for dynamic image and shows, at present, liquid crystal display is Dynamic Graph by backlight module
As regulation brightness.Backlight module typically uses straight-down negative or side-light type back light, and backlight module is typically by adjusting the electricity of LED
Stream changes backlight illumination, makes the backlight photo at dark region in picture should be dimmed, and in making picture brighter region
Backlight photo should brighten, so as to reach the purpose of regulation picture brightness.
However, existing backlight module is when using direct-light-type backlight control partition backlight illumination, LED tune is easily caused
Light time interferes, and causes to be interfered between subregion；When using side-edge type backlight control partition backlight illumination, then exist
Controllable subregion is less, and dynamic contrast is bad.
Utility model content
Main purpose of the present utility model is to propose a kind of television backlight module, it is intended to make to form number in television backlight module
The more individually controllable subregions of amount, reduce the interference between subregion when being dimmed to each subregion, improve the contrast of dynamic image
Degree.
To achieve the above object, the utility model proposes television backlight module, including backboard, at least one light guide plate group
And control unit, each light guide plate group includes being successively set on polylith light guide plate on the backboard in the first direction, respectively
The light guide plate is respectively provided with stem and afterbody relative in said first direction, and light guide plate is along the first direction described in polylith
Head and the tail overlap joint is set, and in light guide plate described in adjacent two, the afterbody of light guide plate described in is overlapped on the head of another light guide plate
In portion；Wherein, the end face where the stem of each light guide plate is provided with luminescence unit, and each light guide plate stem is into light
Face；Described control unit is electrically connected with each luminescence unit, is used to control each luminescence unit to light respectively.
Preferably, the light guide plate has horizontally disposed top surface, the high setting such as top surface of light guide plate described in polylith, is formed
The exiting surface of the backlight module, the relative side of the exiting surface is reflective surface.
Preferably, from its stem to the tapered setting of afterbody, the thicker one end of the light guide plate is its stem to the light guide plate,
And be provided with for the slot to make way for adjacent light guide plate overlap joint, the relatively thin one end of the adjacent light guide plate is its afterbody, and is contained in
In the slot to make way.
Preferably, the upper surface of the stem of each light guide plate is provided with installing plate, and the installing plate is along the stem
Upper end extends outwardly and bending down forms kink, and the kink just to the incidence surface, install by the luminescence unit
On the kink.
Preferably, the exiting surface to the relative position of the reflective surface ultimate range be 1 to 2 millimeter, the light extraction
Face to the relative position of the reflective surface minimum range be 0.5 to 1.5 millimeter.
Preferably, the luminescence unit includes lamp bar plate and lamp source, and the lamp bar plate is FPC flexible light bar boards.
Preferably, the lamp source is LED grain.
Preferably, the backlight module is additionally provided with the first uniform light board and the first light-transmissive film, and first uniform light board is placed in institute
The top surface of light guide plate group is stated, first light-transmissive film is covered in the upper surface of first uniform light board.
Preferably, the light guide plate group is for multigroup, and multigroup light guide plate group is on the backboard along perpendicular to described the
The second direction in one direction is arranged side by side successively.
The utility model also proposes a kind of tv display screen, including the second uniform light board, the second light-transmissive film and foregoing TV
Backlight module, the side of second uniform light board is fitted on the exiting surface of the television backlight module, second light-transmissive film
It is fitted in the opposite side of second uniform light board.
The utility model television backlight module is mainly used in being shown for the TV of the large-sizes such as television set, computer monitor
Screen provides uniform backlight, by setting the backlight module that multiple light guide plate spellings are connected into, in the first party of the light guide plate group
To the polylith light guide plate being successively set on backboard, polylith light guide plate is spliced into one piece of larger light-emitting zone, for larger chi
Very little tv display screen provides more uniform backlight, and each light guide plate is respectively provided with stem and tail relative in the first direction
Portion, overlap joint is set polylith light guide plate from beginning to end along the first direction, and in adjacent two light guide plate, the afterbody of a light guide plate is overlapped on
In the stem of another light guide plate, so that polylith light guide plate is connected to form continuous light-emitting zone, set in the stem of each light guide plate
There is luminescence unit, light guide plate of the luminescence unit for where provides incident light, each piece of light guide plate is had independent incident light
Source.Control unit is electrically connected with luminescence unit, individually to control the luminescence unit on each light guide plate, so as to be shown in TV
Multiple independent controllable subregions are formed in the light-emitting zone of screen, and by controlling the backlight illumination of the controllable subregion, adjusts TV
The dynamic contrast of display screen.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to the structure shown in these accompanying drawings.
Fig. 1 is the structural representation of the utility model television backlight module；
Fig. 2 is the enlarged drawing of part A in Fig. 1；
Fig. 3 is the structural representation of light guide plate in Fig. 1；
Fig. 4 is the structural representation of the utility model tv display screen.
Drawing reference numeral explanation：
| Label | Title | Label | Title |
| 10 | Backboard | 22 | Luminescence unit |
| 20 | Light guide plate group | 221 | Lamp source |
| 21 | It is guide-lighting | 23 | Installing plate |
| 211 | Stem | 231 | Kink |
| 2111 | Incidence surface | 24 | First uniform light board |
| 2112 | Slot to make way | 25 | First light-transmissive film |
| 212 | Afterbody | 30 | Second uniform light board |
| 213 | Exiting surface | 40 | Second light-transmissive film |
| 214 | Reflective surface |
The realization of the utility model purpose, functional characteristics and advantage will be described further referring to the drawings in conjunction with the embodiments.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the 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 whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of the utility model protection.
If it is to be appreciated that related in the utility model embodiment directionality indicate (such as upper and lower, left and right, it is preceding,
Afterwards ...), then directionality indicates to be only used for explaining relative between each part under a certain particular pose (as shown in drawings)
Position relationship, motion conditions etc., if the particular pose changes, directionality indicates also correspondingly to change therewith.
If in addition, relate to the description of " first ", " second " etc. in the utility model embodiment, should " first ", " the
Two " description etc. is only used for describing purpose, and it is not intended that indicating or implying its relative importance or implicit indicate meaning
The quantity of the technical characteristic for showing.Thus, " first " is defined, the feature of " second " can express or implicitly include at least one
Individual this feature.In addition, the technical scheme between each embodiment can be combined with each other, but must be with ordinary skill
Personnel can be implemented as basis, when the combination appearance of technical scheme is conflicting or cannot realize it will be understood that this technical side
The combination of case does not exist, not within the protection domain of the utility model requirement yet.
The utility model proposes a kind of television backlight module.
In the embodiment of the utility model one, what referring to figs. 1 to shown in Fig. 2, in figure, the solid line with arrow was indicated be face,
The planes such as chamber, hole or space.The television backlight module includes backboard 10, at least one light guide plate group 20 and control unit, and (figure is not
Show), each light guide plate group 20 includes the polylith light guide plate 21 being successively set in the first direction on backboard 10, each light guide plate 21
Stem 211 and afterbody 212 relative in a first direction is respectively provided with, head and the tail overlap joint is set polylith light guide plate 21 in the first direction,
And in adjacent two light guide plate 21, the afterbody 212 of a light guide plate 21 is overlapped in the stem 211 of another light guide plate 21；Wherein, respectively lead
End face where the stem 211 of tabula rasa 21 is provided with luminescence unit 22, and the stem 211 of each light guide plate 21 is incidence surface 2111；
Control unit is electrically connected with each luminescence unit 22, is used to control each luminescence unit 22 to light respectively.
Specifically, shown in reference picture 1, the television backlight module is mainly used in being the larger chi such as television set, computer monitor
Very little tv display screen provides uniform backlight, wherein, the television backlight module is provided with backboard 10, and the backboard 10 is used to support
And accommodating light guide plate group 20, shown in reference picture 2, in the present embodiment, light guide plate group 20 is at least one, and the light guide plate group 20 is wrapped
Include the polylith light guide plate 21 being successively set in the first direction on backboard 10, polylith light guide plate 21 be spliced into one piece it is larger luminous
Region, so that the tv display screen of large-size provides uniform backlight, first direction described herein refers to：Along TV
The direction of the incident light of display screen.Each light guide plate 21 is respectively provided with stem 211 and afterbody 212 relative in the first direction, many
Overlap joint is set block light guide plate 21 from beginning to end along the first direction, and in adjacent two light guide plate 21, the afterbody 212 of a light guide plate 21 is taken
It is connected in the stem 211 of another light guide plate 21, so that polylith light guide plate 21 is connected to form continuous light-emitting zone, and the luminous zone
The light extraction in domain is more uniform.Wherein, the stem in each light guide plate 21 is provided with luminescence unit 22, and the luminescence unit 22 is place
Light guide plate 21 provides incident light, each piece of light guide plate 21 is had independent incident light source.Where the stem 211 of light guide plate 21
End face is incidence surface 2111, incident light is irradiated toward first direction from after the incidence of stem 211, and polylith light guide plate 21 is in the first direction
Incident light set in the same direction, reduce the interference between incident light.Control unit can be electrically connected with luminescence unit 22, with
The luminescence unit 22 on each light guide plate 21 is individually controlled, so that individually control every piece of light guide plate 21 to light, so as to be shown in TV
Multiple independent controllable subregions are formed in the light-emitting zone of screen, and by controlling the backlight illumination of the controllable subregion, adjusts TV
The dynamic contrast of display screen, such as, when a certain region needs to be shown as black, can by control unit quick closedown or
The luminescence unit 22 in the region is dimmed, the dynamic image is obtained preferable contrast.
In order that the light extraction of light guide plate 21 is more uniform, the initial and end of light guide plate 21 overlaps to form a plane, the He of reference picture 2
Shown in Fig. 3, in the present embodiment, light guide plate 21 has the high settings such as horizontally disposed top surface, the top surface of polylith light guide plate 21, with
The backlight module is set to form the exiting surface 213 of a plane, the exiting surface 213 can be more uniformly distributed light extraction for plane.Exiting surface
213 relative sides are reflective surface 214, and the effect of the reflective surface 214 is for the incident light of light guide plate 21 provides reflection, so that greatly
Portion of incident light goes out exiting surface 213 by the back reflection of light guide plate 21, improves light efficiency utilization rate.Herein it is necessary to clarify that, instead
The set-up mode of smooth surface 214 can have various, such as be arranged to step surface or inclined-plane, so that light guide plate 21 is wedge shaped.This area
Technical staff can obtain corresponding solution by the utility model embodiment and accompanying drawing, not repeat one by one herein.
Consider for light efficiency utilization rate is preferably improved, shown in reference picture 2 and Fig. 3, in the present embodiment, light guide plate 21 from its
Stem 211 to the tapered setting of afterbody 212, thicker one end of light guide plate 21 is its stem 211, and is provided with for supplying adjacent light guide plate
The slots to make way 2112 of 21 overlap joints, the relatively thin one end of adjacent light guide plate 21 is its afterbody 212, the afterbody 212 and is contained in adjacent leading
In the slot to make way 2112 of tabula rasa 21, make the incident light of light guide plate 21 towards after first direction incidence, afterbody 212 entered through stem 211,
Light through the outgoing of afterbody 212 can enter the stem 211 of adjacent light guide plate 21 by afterbody 212, to make full use of light source, improve
Light efficiency utilization rate.
It is shown referring to Figures 1 and 2 for preferably avoiding being interfered between light, in the present embodiment, each light guide plate 21
Stem 211 is provided with installing plate 23, and installing plate 23 is extended outwardly along the upper end of stem 211 and bending down forms kink
231, slot to make way 2112 is provided with the stem 211, installing plate 23 is arranged in slot to make way 2112, to intercept entering for the light guide plate 21
Penetrate light to be irradiated to exiting surface 213, prevent the incident light and through being overlapped between the emergent light of light guide plate 21 of the slot to make way 2112
Interfere.Just to incidence surface 2111, luminescence unit 22 is arranged on the inner side of kink 231 to kink 231, preferably to fix
Luminescence unit 22, meanwhile, kink 231 is made further to block to luminescence unit 22, it is to avoid light source be overlapped on the slot to make way
Light guide plate emergent light between interfere.
In order that the light extraction of light guide plate 21 is more uniform, and in view of making the thinner thickness of light guide plate 21, reference picture 1 and figure
Shown in 3, in the present embodiment, the ultimate range of the relative position of exiting surface 213 to reflective surface 214 is 1 to 2 millimeter, exiting surface 213
During to be horizontally disposed with, reflective surface 214 is the inclined-plane of the light guide plate of wedge shape, and the relative position of exiting surface 213 to reflective surface 214 is most
Small distance is 0.5 to 1.5 millimeter, so that the light of incident light guide plate 21 is more evenly distributed along the inclined-plane, while making light guide plate
21 thinner thickness.Consider for convenient luminescence unit 22 of installing, in the present embodiment, luminescence unit 22 includes lamp bar plate, and (figure is not
Show) and lamp source 221, lamp source 221 is fixed on installing plate 23 by lamp bar plate, wherein, lamp bar plate be FPC flexible light bar boards more
Be conducive to being arranged luminescence unit 22 according to the layout in space, lamp source 221 is had density higher, be easy to lamp source
221 installations are arranged on installing plate 23.In order that more energy-conservation when the television backlight module is luminous, lamp source 221 is LED grain,
Certainly, it is possible to use CFL as lamp source, and use LED grain can on the basis of enough light quantities are ensured more energy-conservation.
For making the light extraction of backlight be more uniformly distributed consideration, shown in reference picture 2, in the present embodiment, backlight module is additionally provided with
One uniform light board 24 and the first light-transmissive film 25, the first uniform light board 24 can scatter more emergent lights, the first uniform light board 24
The top surface of light guide plate group 20 is placed in, for making more line sources or spot light be converted into area source, the first light-transmissive film 25 is covered
In the upper surface of the first uniform light board 24, further make uniform in light emission, and the light that light guide plate group 20 sends is had without shadow
Effect.
In order to the size of backlight module can be expanded, in the present embodiment, can be set to light guide plate group 20 multigroup, it is multigroup
Light guide plate group 20 is arranged side by side successively on backboard 10 along the second direction perpendicular to first direction, the backboard 10 of light guide plate group 20
With bottom surface, multigroup light guide plate group 20 is fixed on the backboard 10 by the bottom surface, and in the first direction and second direction according to
It is secondary to be arranged side by side, matrix crisscross on the bottom surface is formed in, can be according to actual needs with the size for making backlight module 20
And set, make backlight module 20 be easy to dimensionally be extended.
The utility model also proposes a kind of tv display screen.
Shown in reference picture 4, the tv display screen includes the second uniform light board 30, the second light-transmissive film 40 and foregoing television backlight
Module, concrete structure reference above-described embodiment of the tv display screen, because this tv display screen employs above-mentioned all implementations
Whole technical schemes of example, therefore all beneficial effects that the same technical scheme with above-described embodiment is brought, herein not
Repeat one by one again.Wherein, the side of the second uniform light board 30 is fitted in the side of exiting surface 213 of television backlight module, the second printing opacity
Film 40 is fitted in the opposite side of the second uniform light board 30.Second uniform light board 30 can scatter more emergent lights, and second is even
Tabula rasa 30 is placed on the exiting surface 213 of television backlight module, for making more line sources or spot light be converted into area source, the
Two light-transmissive films 40 are covered in the upper surface of the second uniform light board 30, are further more uniformly distributed emergent light, and send out backlight module
The light for going out can have the effect without shadow.
Preferred embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited,
It is every under inventive concept of the present utility model, the equivalent structure made using the utility model specification and accompanying drawing content is become
Change, or directly/be used in other related technical fields indirectly and be included in scope of patent protection of the present utility model.
Claims (10)
1. a kind of television backlight module, it is characterised in that including：
Backboard；
At least one light guide plate group, each light guide plate group includes the polylith being successively set in the first direction on the backboard
Light guide plate, each light guide plate is respectively provided with stem and afterbody relative in said first direction, and light guide plate is along institute described in polylith
State first direction head and the tail overlap joint to set, and in light guide plate described in adjacent two, the afterbody of light guide plate described in is overlapped on another described
In the stem of light guide plate；Wherein, the stem of each light guide plate is provided with where luminescence unit, and each light guide plate stem
End face is incidence surface；And
Control unit, described control unit is electrically connected with each luminescence unit, is used to control each luminous list respectively
Unit is luminous.
2. television backlight module as claimed in claim 1, it is characterised in that the light guide plate has horizontally disposed top surface,
The high settings such as the top surface of light guide plate described in polylith, form the exiting surface of the backlight module, and the relative side of the exiting surface is anti-
Smooth surface.
3. television backlight module as claimed in claim 2, it is characterised in that the light guide plate sets from its stem to afterbody is tapered
Put, the thicker one end of the light guide plate is its stem, and be provided with for the slot to make way for adjacent light guide plate overlap joint, it is described adjacent to lead
The relatively thin one end of tabula rasa is its afterbody, and is contained in the slot to make way.
4. television backlight module as claimed in claim 3, it is characterised in that the upper surface of the stem of each light guide plate is set
There is installing plate, the installing plate is extended outwardly along the upper end of the stem and bending down forms kink, the kink
Just to the incidence surface, the luminescence unit is arranged on the kink.
5. television backlight module as claimed in claim 4, it is characterised in that the relative position of the exiting surface to the reflective surface
The ultimate range put is 1 to 2 millimeter, and the minimum range of the exiting surface to the relative position of the reflective surface is 0.5 to 1.2 milli
Rice.
6. television backlight module as claimed in claim 5, it is characterised in that the luminescence unit includes lamp bar plate and lamp source,
The lamp bar plate is FPC flexible light bar boards.
7. television backlight module as claimed in claim 6, it is characterised in that the lamp source is LED grain.
8. television backlight module as claimed in claim 7, it is characterised in that the backlight module be additionally provided with the first uniform light board and
First light-transmissive film, first uniform light board is placed in the top surface of the light guide plate group, and first light-transmissive film is covered in described first
The upper surface of uniform light board.
9. television backlight module as claimed in claim 8, it is characterised in that the light guide plate group be it is multigroup, it is multigroup described to lead
Tabula rasa group is arranged side by side successively on the backboard along the second direction perpendicular to the first direction.
10. a kind of tv display screen, it is characterised in that including the second uniform light board, the second light-transmissive film and as in claim 1 to 9
Television backlight module described in any one, the side of second uniform light board is fitted in the exiting surface of the television backlight module
On, second light-transmissive film is fitted in the opposite side of second uniform light board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621404337.XU CN206248972U (en) | 2016-12-20 | 2016-12-20 | Television backlight module and tv display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621404337.XU CN206248972U (en) | 2016-12-20 | 2016-12-20 | Television backlight module and tv display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206248972U true CN206248972U (en) | 2017-06-13 |
Family
ID=59007927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621404337.XU Expired - Fee Related CN206248972U (en) | 2016-12-20 | 2016-12-20 | Television backlight module and tv display screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206248972U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112987407A (en) * | 2021-03-31 | 2021-06-18 | 维沃移动通信有限公司 | Backlight module and electronic equipment |
-
2016
- 2016-12-20 CN CN201621404337.XU patent/CN206248972U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112987407A (en) * | 2021-03-31 | 2021-06-18 | 维沃移动通信有限公司 | Backlight module and electronic equipment |
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| GR01 | Patent grant | ||
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Granted publication date: 20170613 |