CN205880445U - Back light module and liquid crystal display device - Google Patents
Back light module and liquid crystal display device Download PDFInfo
- Publication number
- CN205880445U CN205880445U CN201620694511.2U CN201620694511U CN205880445U CN 205880445 U CN205880445 U CN 205880445U CN 201620694511 U CN201620694511 U CN 201620694511U CN 205880445 U CN205880445 U CN 205880445U
- Authority
- CN
- China
- Prior art keywords
- guide plate
- light
- light guide
- backlight module
- incidence surface
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a back light module and liquid crystal display device, backlight unit is including gluing frame, light source, reflectance coating, light guide plate, optics diaphragm, shading film. The reflectance coating sets up in the bottom of gluing the frame, the light source the light guide plate sets up reflectance coating top and besieged glue the inside casing the inside of frame. The light guide plate includes that wedge portion divides and rectangular part, the light source is located the one side on the first income plain noodles that light guide plate wedge portion divides. Because the light guide plate is done thinner and thinner, when thin to than when the thickness of light source is still little, the play light zone of light source will be by unsettled, extravagant a large amount of effective light, like this luminance will reduce by a wide margin. The utility model discloses a backlight unit's light guide plate design has the wedge structure, makes highly being less than or equal to of light source the height on the first income plain noodles of wedge structure will be bare the more abundant leading -in light guide plate that arrives, improve the utilization ratio of effective light, also reduce the manufacturing cost of light guide plate simultaneously.
Description
Technical field
This utility model relates to a kind of field of liquid crystal display, particularly relates to a kind of utilization rate that can improve the effective light of light source
Backlight module and liquid crystal indicator.
Background technology
Flourish along with opto-electronics, liquid crystal display has been widely used in various electric equipment products, wherein carries on the back
Light module is one of key component of display panels, owing to liquid crystal itself does not have the characteristics of luminescence, therefore, it is necessary in liquid crystal
Show that panel bottom surface, plus a luminous source, can be only achieved full color rendering effect, backlight module on display panels
Function be i.e. well-off brightness and the planar light source being evenly distributed, make the display panels can normal show image.
Now a lot of electronic products do thinner and thinner, and light guide plate also will be the thinnest, thin to time less than the thickness of LED light source,
The output optical zone of LED light source will be suspended, and wastes substantial amounts of effective light, and such brightness can be greatly reduced.Institute the most as shown in Figure 1, Figure 2
Showing, wherein Fig. 1 is the structural representation of traditional backlight module, the partial cutaway that Fig. 2 is made by the A-A ' cutting line along Fig. 1
View, in Fig. 2, the aspect ratio light guide plate 104 of light source 103 is higher, and therefore a part effectively light will not be from the wedge shape of light guide plate 104
Described first incidence surface of part enters, and the utilization rate that result in the effective light of light source is low.
Therefore be necessary to provide a kind of light module and liquid crystal indicator, to solve the problem that prior art exists.
Utility model content
This utility model provides a kind of backlight module that can improve light efficiency and liquid crystal indicator, to solve prior art
In backlight module and the problem that is wasted of the effective light of light source of liquid crystal indicator.
For solving above-mentioned technical problem, the technical solution of the utility model is: a kind of backlight module, it is characterised in that institute
State backlight module to include:
Glue frame；
Reflectance coating, is fitted in the bottom of described glue frame；
Light source, is arranged on the reflecting film and the inwall of close described glue frame side；
Light guide plate, described light guide plate is arranged on the top of described reflectance coating and is enclosed in inside the inside casing of described glue frame,
Described light guide plate includes that wedge-like portion and rectangle part, described wedge-like portion include the first incidence surface and the first exiting surface, described
First incidence surface is positioned at described wedge-like portion to this one side to described light source luminescent face, described first incidence surface and described the
One exiting surface is oppositely arranged, and the height of described first incidence surface is more than the height of described first exiting surface, described rectangle part
Including the second incidence surface and the second exiting surface, described second incidence surface is arranged oppositely with described first exiting surface, and described first
Exiting surface and the second incidence surface height are identical, and described second exiting surface is positioned at the end face of described rectangle part.
In this utility model, described wedge-like portion top has an inclined-plane, the low side on described inclined-plane to be connected to described rectangle
Described second exiting surface of part light guide plate.
In this utility model, the height of described first incidence surface is more than or equal to the height of light source.
In this utility model, described light source includes multiple LED.
In this utility model, described backlight module also includes blooming piece, is pasted onto the second of described rectangle part and goes out
On bright finish, described blooming piece includes: light-diffusing film, lower bright enhancement film, upper bright enhancement film, and described light-diffusing film is pasted on described light guide plate
On, described lower bright enhancement film is pasted on described light-diffusing film, and described upper bright enhancement film is pasted on described lower bright enhancement film.
In this utility model, described backlight module also include shading film, described shading film be pasted onto described glue frame and
On blooming piece.
In this utility model, described shading film is completely covered the gap between described glue frame and described blooming piece.
In this utility model, described shading film is frame shape.
In this utility model, also include a kind of liquid crystal indicator, it is characterised in that described liquid crystal indicator bag
Include:
Display floater and backlight module；
Described backlight module includes:
Glue frame；
Reflectance coating, is fitted in the bottom of described glue frame；
Light source, is arranged on the reflecting film and the inwall of close described glue frame side；
Light guide plate, described light guide plate is arranged on the top of described reflectance coating and is enclosed in inside the inside casing of described glue frame,
Described light guide plate includes that wedge-like portion and rectangle part, described wedge-like portion include the first incidence surface and the first exiting surface, described
First incidence surface is positioned at described wedge-like portion to this one side to described light source luminescent face, described first incidence surface and described the
One exiting surface is oppositely arranged, and the height of described first incidence surface is more than the height of described first exiting surface, described rectangle part
Including the second incidence surface and the second exiting surface, described second incidence surface is arranged oppositely with described first exiting surface, and described first
Exiting surface and the second incidence surface height are identical, and described second exiting surface is positioned at the end face of described rectangle part.
This utility model is compared with existing backlight module, owing to light guide plate does thinner and thinner, when thin to than described light source
When thickness is the least, the output optical zone of light source will be suspended, and wastes substantial amounts of effective light, and such brightness will be greatly reduced.And this
The light guide plate of the backlight module of utility model is provided with wedge-like portion, makes the height of described light source enter light less than or equal to described first
The height in face, imports to light guide plate more fully by light, improves the utilization rate of effective light, also reduces the life of light guide plate simultaneously
Produce cost.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings detailed description of the invention of the present utility model is described in further detail.
Fig. 1 is the structural representation of traditional backlight module
The partial sectional view that Fig. 2 is made by the A-A ' cutting line along Fig. 1.
Fig. 3 is the preferred embodiment structural representation of backlight module of the present utility model.
The partial sectional view that Fig. 4 is made by the B-B ' cutting line along Fig. 3.
Fig. 5 is the structural representation of the light guide plate of the preferred embodiment of backlight module of the present utility model.
Corresponding title representated by numeral in figure:
101: glue frame, 102: reflectance coating, 103: light source, 104: light guide plate, 105: light-diffusing film, 106 times bright enhancement films:, 107:
Upper bright enhancement film, 108: shading film, 109:FPC plate.
201: glue frame, 202: reflectance coating, 203: light source, 204: light guide plate, 205: light-diffusing film, 206: lower bright enhancement film, 207:
Upper bright enhancement film, 208: shading film, 209:FPC plate.
301: wedge-like portion, 302: rectangle part.
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 this utility model rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art do not make institute under creative work premise
Obtain every other embodiment, broadly fall into the scope of this utility model protection.
In the drawings, the unit that structure is similar represents with same-sign.
Referring to Fig. 3, Fig. 4 and Fig. 5, Fig. 3 is the preferred embodiment structural representation of backlight module of the present utility model, figure
4 partial sectional views made by the B-B ' cutting line along Fig. 3, Fig. 5 is the preferred embodiment of backlight module of the present utility model
The structural representation of light guide plate.
A kind of technical scheme of this utility model offer: a kind of backlight module, it is characterised in that described backlight module includes:
Glue frame 201, reflectance coating 202, light source 203, light guide plate 204, light-diffusing film 205, lower bright enhancement film 206, upper bright enhancement film 207, shading glue
Sheet 208, FPC209.
In the backlight module of preferred embodiment of the present utility model, reflectance coating 202 is fitted in the bottom of glue frame 201, FPC
Plate 209 is pasted onto glue frame 201 on light source 203 side.
Light source 203, light guide plate 204, it is arranged on reflectance coating 202, and is enclosed in inside the inside casing of glue frame 201.
In the backlight module of preferred embodiment of the present utility model, reflectance coating 202 is arranged on the bottom of glue frame 201, uses
In by luminous reflectance to light guide plate 204.
Light source 203 is arranged on reflectance coating 202 and the inwall of close glue frame 201 side, and light source 203 includes multiple LED.
Light guide plate 204 is arranged on the top of reflectance coating 202, and light guide plate 204 includes wedge-like portion 301 and rectangle part 302.
Wedge-like portion 301 includes the first incidence surface and the first exiting surface, and it is right that described first incidence surface is positioned at wedge-like portion 301
To this one side in described light source luminescent face, described first incidence surface is oppositely arranged with described first exiting surface, and described first
The height of incidence surface is more than the height of described first exiting surface, and rectangle part 302 includes the second incidence surface and the second exiting surface, institute
State the second incidence surface to be arranged oppositely with described first exiting surface, and described first exiting surface and the second incidence surface height identical, institute
State the second exiting surface and be positioned at the end face of described rectangle part.
Wedge-like portion 301 top has an inclined-plane, the low side on described inclined-plane to be connected to described the second of described rectangle part to go out
Bright finish.
Blooming piece is pasted in the top of light guide plate 204, and described blooming piece includes: light-diffusing film 205, lower bright enhancement film 206, on
Bright enhancement film 207, wherein light-diffusing film 205 is pasted on described light guide plate, and lower bright enhancement film 206 is pasted on light-diffusing film 205, upper increasing
Light film 207 is pasted on lower bright enhancement film 206.
Light-diffusing film 205 makes light scatter on its surface, disseminates out uniformly by soft for light, thus improves and face
Brightness；Lower bright enhancement film 206 is assembled to frontal for the dispersed light sent by described light guide plate, to improve brightness；On add lustre to
Film 207 is further assembled to frontal for the dispersed light sent by described light guide plate, improves brightness.
Shading film 208 is frame shape, is pasted and fixed on FPC plate 209 and described blooming piece, shading film 208
Space FPC plate 209 and described blooming piece between is completely covered, is used for preventing backlight module light leak.
This utility model also includes a kind of liquid crystal indicator, and it includes display floater, and backlight module；
Described backlight module includes:
Glue frame 201；
Reflectance coating 202, is fitted in the bottom of described glue frame 201；
Light source 203, is arranged on reflectance coating 202 and the inwall of close glue frame 201 side；
Light guide plate 204, described light guide plate is arranged on the top of described reflectance coating 202 and is enclosed in the inside casing of glue frame 201
The inside, light guide plate 204 includes wedge-like portion 301 and rectangle part 302, and wedge-like portion 301 includes that the first incidence surface and first goes out
Bright finish, described first incidence surface is positioned at described wedge-like portion to this one side to described light source luminescent face, and described first enters light
Face is oppositely arranged with described first exiting surface, and the height of described first incidence surface is more than the height of described first exiting surface, square
Shape part 302 includes that the second incidence surface and the second exiting surface, described second incidence surface are arranged oppositely with described first exiting surface, and
Described first exiting surface and the second incidence surface height are identical, and described second exiting surface is positioned at the end face of described rectangle part.
Backlight module and the operation principle of liquid crystal indicator described in this preferred embodiment be: after power-on, light
Source 203 is luminous, and light imports from described first incidence surface of light guide plate 204, then sequentially pass through described first exiting surface, described the
Two incidence surfaces and reflectance coating 202, then from described second exiting surface injection, the surface of light injection to light-diffusing film 205 occurs
Scattering, light is soft to be disseminated uniformly to lower bright enhancement film 206 and upper bright enhancement film 207, is assembled by light alignment frontal, improves bright
Degree, last light reaches on display panels.Wherein, the light that light source 203 sends has sub-fraction could not import light guide plate,
By the shading film 208 that is pasted and fixed on FPC plate 209 and blooming piece to prevent backlight module light leak.
The most i.e. complete the luminescence process of the backlight module of this preferred embodiment.
The backlight module of this utility model preferred embodiment and liquid crystal indicator, present light guide plate does thinner and thinner,
When thin to the time less than the thickness of described light source, the output optical zone of light source will be suspended, and wastes substantial amounts of effective light, the brightest
Degree will be greatly reduced.And the light guide plate of backlight module of the present utility model is designed with wedge structure, makes the height of described light source
Less than or equal to the height of described first incidence surface, light is imported to more fully light guide plate, improves the utilization rate of effective light,
Also reduce the production cost of light guide plate simultaneously.
In sum, although this utility model is disclosed above with preferred embodiment, but above preferred embodiment is not used
To limit this utility model, those of ordinary skill in the art, without departing from spirit and scope of the present utility model, all can do
Various changes and retouching, protection domain the most of the present utility model defines in the range of standard with claim.
Claims (10)
1. a backlight module, it is characterised in that described backlight module includes:
Glue frame；
Reflectance coating, is fitted in the bottom of described glue frame；
Light source, is arranged on the reflecting film and the inwall of close described glue frame side；
Light guide plate, described light guide plate is arranged on the top of described reflectance coating and is enclosed in inside the inside casing of described glue frame, described
Light guide plate includes that wedge-like portion and rectangle part, described wedge-like portion include the first incidence surface and the first exiting surface, described first
Incidence surface is positioned at described wedge-like portion and goes out this one side to described light source luminescent face, described first incidence surface with described first
Bright finish is oppositely arranged, and the height of described first incidence surface is more than the height of described first exiting surface, and described rectangle part includes
Second incidence surface and the second exiting surface, described second incidence surface is arranged oppositely with described first exiting surface, and described first goes out light
Face is identical with the second incidence surface height, and described second exiting surface is positioned at the end face of described rectangle part.
Backlight module the most according to claim 1 a, it is characterised in that inclined-plane arranged at described wedge-like portion top, described tiltedly
The bottom in face is connected to described second exiting surface of described rectangle part light guide plate.
Backlight module the most according to claim 1, it is characterised in that the height of described first incidence surface is more than or equal to light
The height in source.
Backlight module the most according to claim 1, it is characterised in that described light source includes multiple LED.
Backlight module the most according to claim 1, it is characterised in that described backlight module also includes blooming piece, described
Blooming piece is pasted onto on the second exiting surface of described rectangle part.
Backlight module the most according to claim 5, it is characterised in that described blooming piece includes: light-diffusing film, under add lustre to
Film, upper bright enhancement film, described light-diffusing film is pasted on described light guide plate, and described lower bright enhancement film is pasted on described light-diffusing film, described
Upper bright enhancement film is pasted on described lower bright enhancement film.
Backlight module the most according to claim 5, it is characterised in that described backlight module also includes shading film, described
Shading film is pasted onto on described glue frame and blooming piece.
Backlight module the most according to claim 7, it is characterised in that described shading film is completely covered described glue frame and institute
State the gap between blooming piece.
Backlight module the most according to claim 7, it is characterised in that described shading film is frame shape.
10. a liquid crystal indicator, it is characterised in that described liquid crystal indicator includes:
Display floater and backlight module；
Described backlight module includes:
Glue frame；
Reflectance coating, is fitted in the bottom of described glue frame；
Light source, is arranged on the reflecting film and the inwall of close described glue frame side；
Light guide plate, described light guide plate is arranged on the top of described reflectance coating and is enclosed in inside the inside casing of described glue frame, described
Light guide plate includes that wedge-like portion and rectangle part, described wedge-like portion include the first incidence surface and the first exiting surface, described first
Incidence surface is positioned at described wedge-like portion and goes out this one side to described light source luminescent face, described first incidence surface with described first
Bright finish is oppositely arranged, and the height of described first incidence surface is more than the height of described first exiting surface, and described rectangle part includes
Second incidence surface and the second exiting surface, described second incidence surface is arranged oppositely with described first exiting surface, and described first goes out light
Face is identical with the second incidence surface height, and described second exiting surface is positioned at the end face of described rectangle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620694511.2U CN205880445U (en) | 2016-07-01 | 2016-07-01 | Back light module and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620694511.2U CN205880445U (en) | 2016-07-01 | 2016-07-01 | Back light module and liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205880445U true CN205880445U (en) | 2017-01-11 |
Family
ID=57694162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620694511.2U Expired - Fee Related CN205880445U (en) | 2016-07-01 | 2016-07-01 | Back light module and liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205880445U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107102398A (en) * | 2017-05-27 | 2017-08-29 | 厦门天马微电子有限公司 | Backlight module and display panel |
| CN109254450A (en) * | 2017-07-13 | 2019-01-22 | Lg 电子株式会社 | Display device |
-
2016
- 2016-07-01 CN CN201620694511.2U patent/CN205880445U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107102398A (en) * | 2017-05-27 | 2017-08-29 | 厦门天马微电子有限公司 | Backlight module and display panel |
| CN109254450A (en) * | 2017-07-13 | 2019-01-22 | Lg 电子株式会社 | Display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103486480B (en) | A kind of backlight module and display unit | |
| CN107238974A (en) | A kind of backlight and liquid crystal display module | |
| CN202649645U (en) | Liquid crystal display panel and display device | |
| CN202048503U (en) | LED (Light-Emitting Diode) backlight module diffusion board | |
| CN104635380B (en) | Backlight module and liquid crystal display device with quantum bar | |
| CN203337958U (en) | Backlight module and display device | |
| CN105891938A (en) | Backlight module and liquid crystal display | |
| CN204420764U (en) | A kind of side entrance back module and display unit | |
| CN106773263A (en) | Display panel and its manufacture method, display device | |
| CN205880446U (en) | Back light module and liquid crystal display device | |
| CN103278873A (en) | Color filter structure and liquid crystal display panel using same | |
| CN107422528A (en) | A kind of blooming piece, backlight module and display device | |
| CN103225773A (en) | Sidelight type LED dynamic backlight module and liquid crystal display device | |
| CN201218442Y (en) | Backlight module and LCD device containing the same | |
| CN205880445U (en) | Back light module and liquid crystal display device | |
| CN205091526U (en) | Backlight and display module assembly | |
| CN201184944Y (en) | Backlight module unit | |
| CN102878525A (en) | Prism film, side-light type backlight module and liquid crystal display device | |
| CN206133057U (en) | A reflection member for backlight module | |
| CN204314573U (en) | Backlight module | |
| CN202049303U (en) | Lcm | |
| KR20110039807A (en) | Composite sheet for lcd, and backlight unit using the same | |
| CN201654393U (en) | Direct type ultrathin LED device | |
| CN205080339U (en) | Blue light LD backlight unit and display device | |
| CN206387980U (en) | A kind of LCDs for improving display effect |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170111 Termination date: 20190701 |