CN205880446U - Back light module and liquid crystal display device - Google Patents
Back light module and liquid crystal display device Download PDFInfo
- Publication number
- CN205880446U CN205880446U CN201620695951.XU CN201620695951U CN205880446U CN 205880446 U CN205880446 U CN 205880446U CN 201620695951 U CN201620695951 U CN 201620695951U CN 205880446 U CN205880446 U CN 205880446U
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- China
- Prior art keywords
- guide plate
- light guide
- backlight module
- wedge
- glue frame
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- 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
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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, little secret note, shading film. The reflectance coating laminating is in glue the bottom of frame, the light guide plate sets up above the reflectance coating and besieged glue in the inside casing of frame, the light guide plate includes that wedge portion divides and rectangular part, wedge portion divides including going into plain noodles and inclined plane, rectangular part is including going out the plain noodles, it is just right that the light source sets up at gluey frame inside casing go into the one side on plain noodles, go into plain noodles one side. The wedge structure light guide plate can destroy the total reflection condition, has the position light -emitting that light never needs the light -emitting, causes and does not hope that the optics that appears is bad, such as the socket facula etc.. And the utility model discloses an among the backlight unit be close to on the play plain noodles of rectangular part light guide plate little secret note is posted to one side that wedge portion divides, has solved the problem of bad light -emitting.
Description
Technical field
This utility model relates to a kind of field of liquid crystal display, particularly relate to a kind of can solve bad go out optical issue 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.
In a lot of backlight modules, light guide plate is wedge structure, and wedge structure light guide plate can destroy total reflection condition, meeting
The problems such as the position having light to never need to out light goes out light, causes undesirable optics bad, such as socket hot spot.Such as figure
1 is the structural representation of traditional backlight module, and the partial sectional view that Fig. 2 is made by the A-A ' cutting line along Fig. 1, in Fig. 2
Light guide plate 104 some be wedge structure, but light guide plate 104 and the misaligned part of blooming piece 105 be arranged above hide
Ray film 206, this can not solve because of wedge structure cause bad go out optical issue.
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 liquid crystal indicator bad go out light problem.
For solving above-mentioned technical problem, the technical solution of the utility model is: a kind of backlight module, described backlight module bag
Include:
Glue frame；
Reflectance coating, is fitted in the bottom of described glue frame；
Light source, is arranged on described reflectance coating 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 rectangle part include that exiting surface, described exiting surface are positioned at described square
The end face of shape part light guide plate, described wedge-like portion includes that incidence surface and inclined-plane, described incidence surface are positioned at wedge-like portion light guide plate
To the side to described light source luminescent face, the height of described incidence surface more than the thickness of described rectangle part light guide plate, described tiltedly
Face is positioned at the top of wedge-like portion and connects described incidence surface and described exiting surface；
Little secret note, is pasted onto on described exiting surface and near the inclined-plane of described wedge-like portion.
In backlight module described in the utility model, the length of described little secret note is identical with the width of described light guide plate.
In backlight module described in the utility model, the minimum thickness of described wedge-like portion light guide plate and described rectangular portion
The thickness dividing light guide plate is identical.
In backlight module described in the utility model, the height of described incidence surface is more than or equal to the height of described light source.
In backlight module described in the utility model, described light source includes multiple LED.
In backlight module described in the utility model, described backlight module also includes blooming piece, described blooming piece
It is pasted onto on described rectangle part light guide plate end face.
In backlight module described in the utility model, described backlight module also includes shading film, described shading film
It is pasted onto on described glue frame and blooming piece.
Further, described shading film is frame shape.
Further, described shading film is completely covered the gap between described glue frame and described blooming piece.
This utility model also includes a kind of liquid crystal indicator, and 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 described reflectance coating 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 rectangle part include that exiting surface, described exiting surface are positioned at described square
The end face of shape part light guide plate, described wedge-like portion includes that incidence surface and inclined-plane, described incidence surface are positioned at wedge-like portion light guide plate
To the side to described light source luminescent face, the height of described incidence surface more than the thickness of described rectangle part light guide plate, described tiltedly
Face is positioned at the top of wedge-like portion and connects described incidence surface and described exiting surface；
Little secret note, is pasted onto on described exiting surface and near the inclined-plane of described wedge-like portion.
This utility model is compared with existing backlight module, owing to present light guide plate does thinner and thinner, so usually can lead
Being designed with wedge structure on tabula rasa, wedge structure light guide plate can destroy total reflection condition, has light and never needs to out light
Position goes out light, causes undesirable optics bad, such as socket hot spot etc..And in backlight module of the present utility model,
Post little secret note near the side of described wedge-like portion on the exiting surface of described rectangle part light guide plate, solve bad go out light
Problem.
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.
Corresponding title representated by numeral in figure:
Fig. 5 is the structural representation of the light guide plate of the preferred embodiment of backlight module of the present utility model.
101: glue frame, 102: reflectance coating, 103: light source, 104: light guide plate, 105: blooming piece, 106: shading film,
107:FPC plate.
201: glue frame, 202: reflectance coating, 203: light source, 204: light guide plate, 205: blooming piece, 206: shading film,
207: little secret note, 208: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.
This utility model provides a kind of technical scheme: a kind of backlight module, described backlight module includes: glue frame 201, reflection
Film 202, light source 203, light guide plate 204, blooming piece 205, shading film 206, little secret note 207, FPC plate 208.
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 light is reflected.Light source 203 is arranged on reflectance coating 202 and the inwall of close glue frame 201 side, and FPC plate 208 is arranged on
Glue frame 201 is near the top of light source 203 side.
Being arranged above light guide plate 204 at reflectance coating 202, light guide plate 204 is enclosed in inside the inside casing of described glue frame 201, leads
Tabula rasa 204 includes wedge-like portion 301 and rectangle part 302, and it is described that rectangle part 302 includes that exiting surface, described exiting surface are positioned at
The end face of rectangle part light guide plate, wedge-like portion 301 includes that incidence surface and inclined-plane, described incidence surface are positioned at wedge-like portion 301
Light guide plate is more than the light guide plate of described rectangle part 302 to the side to described light source luminescent face, the height of described incidence surface
Thickness, described inclined-plane is positioned at the top of wedge-like portion 301 and connects described incidence surface and described exiting surface.
The wherein minimum thickness of wedge-like portion 301 light guide plate of light guide plate 204 and the thickness of described rectangle part 302 light guide plate
Spend identical.
The exiting surface of described rectangle part light guide plate is provided with little secret note 207, is positioned at described exiting surface near described
The side on the inclined-plane of wedge-like portion.The length of little secret note 207 is identical with the width of light guide plate 204
In the preferred embodiment, the height of described incidence surface is more than or equal to the height of described light source.
Light source described in this preferred embodiment includes multiple LED.
Also include that blooming piece 205, blooming piece 205 are pasted onto described square at the backlight module described in this preferred embodiment
On shape part light guide plate end face.Blooming piece 205 can disseminate out, simultaneously by dispersed light to front side by soft for light uniformly
To gathering, to improve brightness.
Also include that shading film 206, film 206 are frame shape at the backlight module described in this preferred embodiment, shading glue
Sheet 206 is pasted onto on FPC plate 208 and blooming piece 205, and between being completely covered between glue frame 201 and blooming piece 205
Gap,
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, light source 203, light guide plate 204, blooming piece 205, shading
Film 206, little secret note 207.
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 light is reflected.Light source 203 is arranged on reflectance coating 202 and the inwall FPC plate 208 of close glue frame 201 side is arranged on
Glue frame 201 is near the top of light source 203 side.
Being arranged above light guide plate 204 at reflectance coating 202, light guide plate 204 is enclosed in inside the inside casing of described glue frame 201, leads
Tabula rasa 204 includes that wedge-like portion and rectangle part, described rectangle part include that exiting surface, described exiting surface are positioned at described rectangular portion
The end face of point light guide plate, described wedge-like portion include incidence surface and inclined-plane, described incidence surface be positioned at wedge-like portion light guide plate to
The side in described light source luminescent face, the height of described incidence surface is more than the thickness of described rectangle part light guide plate, position, described inclined-plane
In the top of wedge-like portion and connect described incidence surface and described exiting surface.
The wherein thickness phase of the minimum thickness of the wedge-like portion light guide plate of light guide plate 204 and described rectangle part light guide plate
With.
The exiting surface of described rectangle part light guide plate is provided with little secret note 207, is positioned at described exiting surface near described
The side on the inclined-plane of wedge-like portion.The length of little secret note 207 is identical with the width of light guide plate 204.
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 the described incidence surface of light guide plate 204, then sequentially pass through light guide plate 204 described wedge-like portion and
Described rectangle part, light penetrates to blooming piece 205 from the exiting surface of described rectangle part light guide plate, through blooming piece 205
Disseminate soft for light uniformly and after frontal is assembled, improve brightness.Last light reaches on display panels.
Wherein, the light guide plate of wedge structure destroys total reflection structure, near described on the exiting surface of described rectangle part light guide plate
The side of wedge-like portion post little secret note 207 to prevent bad go out optical issue.The light that light source 203 sends also has sub-fraction not to be had
Light guide plate can be imported, by being pasted onto the shading film 206 on FPC plate 208 and blooming piece 205 to prevent backlight module from leaking
Light.
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 are by guide-lighting at described rectangle part
On the exiting surface of plate, little secret note is sticked in the side near described wedge-like portion, solves because wedge structure light guide plate causes not
Good go out light problem.
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 described reflectance coating 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 rectangle part include that exiting surface, described exiting surface are positioned at described rectangular portion
The end face of point light guide plate, described wedge-like portion include incidence surface and inclined-plane, described incidence surface be positioned at wedge-like portion light guide plate to
The side in described light source luminescent face, the height of described incidence surface is more than the thickness of described rectangle part light guide plate, position, described inclined-plane
In the top of wedge-like portion and connect described incidence surface and described exiting surface；
Little secret note, is pasted onto on described exiting surface and near the inclined-plane of described wedge-like portion.
Backlight module the most according to claim 1, it is characterised in that the length of described little secret note and the width of described light guide plate
Spend identical.
Backlight module the most according to claim 1, it is characterised in that the minimum thickness of described wedge-like portion light guide plate and institute
The thickness stating rectangle part light guide plate is identical.
Backlight module the most according to claim 1, it is characterised in that the height of described incidence surface is more than or equal to described light source
Height.
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 described rectangle part light guide plate end face.
Backlight module the most according to claim 1, 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 frame shape.
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.
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 described reflectance coating 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 rectangle part include that exiting surface, described exiting surface are positioned at described rectangular portion
The end face of point light guide plate, described wedge-like portion include incidence surface and inclined-plane, described incidence surface be positioned at wedge-like portion light guide plate to
The side in described light source luminescent face, the height of described incidence surface is more than the thickness of described rectangle part light guide plate, position, described inclined-plane
In the top of wedge-like portion and connect described incidence surface and described exiting surface；
Little secret note, is pasted onto on described exiting surface and near the inclined-plane of described wedge-like portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620695951.XU CN205880446U (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 |
|---|---|---|---|
| CN201620695951.XU CN205880446U (en) | 2016-07-01 | 2016-07-01 | Back light module and liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205880446U true CN205880446U (en) | 2017-01-11 |
Family
ID=57693768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620695951.XU Expired - Fee Related CN205880446U (en) | 2016-07-01 | 2016-07-01 | Back light module and liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205880446U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106990611A (en) * | 2017-03-17 | 2017-07-28 | 武汉华星光电技术有限公司 | A kind of backlight module and liquid crystal display device |
| CN108061987A (en) * | 2017-12-12 | 2018-05-22 | 维沃移动通信有限公司 | A kind of backlight module and mobile terminal |
| CN109254450A (en) * | 2017-07-13 | 2019-01-22 | Lg 电子株式会社 | Display device |
| CN113721387A (en) * | 2021-08-27 | 2021-11-30 | 京东方科技集团股份有限公司 | Backlight module and display device |
-
2016
- 2016-07-01 CN CN201620695951.XU patent/CN205880446U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106990611A (en) * | 2017-03-17 | 2017-07-28 | 武汉华星光电技术有限公司 | A kind of backlight module and liquid crystal display device |
| CN109254450A (en) * | 2017-07-13 | 2019-01-22 | Lg 电子株式会社 | Display device |
| CN108061987A (en) * | 2017-12-12 | 2018-05-22 | 维沃移动通信有限公司 | A kind of backlight module and mobile terminal |
| CN108061987B (en) * | 2017-12-12 | 2019-10-15 | 维沃移动通信有限公司 | A kind of backlight module and mobile terminal |
| CN113721387A (en) * | 2021-08-27 | 2021-11-30 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN113721387B (en) * | 2021-08-27 | 2023-10-27 | 京东方科技集团股份有限公司 | Backlight module and display device |
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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: 20170701 |