CN2911732Y - Backlight module - Google Patents
Backlight module Download PDFInfo
- Publication number
- CN2911732Y CN2911732Y CN 200620115183 CN200620115183U CN2911732Y CN 2911732 Y CN2911732 Y CN 2911732Y CN 200620115183 CN200620115183 CN 200620115183 CN 200620115183 U CN200620115183 U CN 200620115183U CN 2911732 Y CN2911732 Y CN 2911732Y
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- CN
- China
- Prior art keywords
- reflector plate
- main body
- light guide
- shell
- reflective film
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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.)
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- Planar Illumination Modules (AREA)
Abstract
The utility model relates to a backlight module with the dustproof function, comprising a light source, a light guiding plate, a casing and a reflective film. The light source is provided with a light output surface, the light guiding plate is arranged on the light output surface, the casing is used for holding the light guiding plate and the light source, and a clearance is formed between the casing and the light guiding plate. The clearance has a width, the reflective film is provided with a reflective film main body and a reflective film extension section, the reflective film main body covers part of the light guiding plate, one end of the reflective film extension section is connected with the reflective film main body, and the other end of the reflective film extension section extends toward the casing direction to contact with the casing. The reflective film extension section of the utility model backlight module can prevent the intrusion of dust into the backlight module, through which the screen image quality of a liquid crystal display is protected from being destroyed, the maintenance cost is reduced, and a variety of inconvenience are exempt.
Description
[technical field]
The utility model is about a kind of module backlight, particularly about a kind of module backlight with dust reduction capability.
[background technology]
As shown in Figure 1, known side light inlet pattern (edge-type) module 10 backlight has comprised a shell 111, a light guide plate 104, one or more layers blooming piece 105, a reflector plate 103 and a light source (not shown).The light source that does not show is a side surface (this side surface also is not shown among the figure) that is arranged at light guide plate 104.After the light that light source produced is incident in light guide plate 104, can intersperse among light guide plate 104 inside everywhere because of the interface total reflection.Light is upper surface 1043 outgoing by light guide plate 104, through blooming piece 105, and then becomes the backlight of liquid crystal panel 106.The lower surface 1041 set reflector plates 103 of light guide plate 104 are in order to improving the utilization rate of light, avoid light through lower surface 1041 outgoing and loss.
If the dust (shown in label 107) of invading drops on the several layers of blooming piece 105, an output light 109 is subjected to the covering of dust 107, might thereby cause optics diffraction and scattering phenomenon.Perhaps, export the obstruction of light 109 possibilities, and fuzzy shade occurs at the picture of liquid crystal panel 106, destruction picture image quality because of dust 107.
On the other hand, the fragility owing to the precise structure of liquid crystal panel 106, and very easily be subjected to external force to lose and damage.And the several layers of blooming piece 105 in the module 10 backlight also are the optical element of a precision.Therefore, dust 107 as shown in Figure 1 more may cause the liquid crystal panel 106 or the damage of several layers of blooming piece 105.
When dust 107 had been invaded among module 10 backlight, in general, general consumer and impotentia were dismantled the dust 107 with clean internal voluntarily.If not send factory's maintenance this moment, then have to stand the deterioration of its quality, perhaps it may be abandoned or reclaims, other purchases new product.Even if send factory's maintenance, assembly and disassembly all need be carried out in the dust free room environment.And blooming piece 105 needs could remove its lip-deep dust 107 with the speciality tool cleaning.For manufacturer, this also causes the loss of manpower and cost.
[utility model content]
The purpose of this utility model is to provide a kind of module backlight with dust reduction capability, invades the variety of problems that module internal backlight is caused to solve dust.
In order to achieve the above object, the utility model provides a kind of module backlight with dust reduction capability, comprise: a light source, one light guide plate, one shell, an and reflector plate, light source has an exiting surface, and light guide plate is arranged at the exiting surface of light source, shell is in order to hold light guide plate and light source, and and formation one space between the light guide plate, this space has a width, reflector plate has a reflector plate main body and a reflector plate extension, reflector plate main body cover part light guide plate, one end of reflector plate extension links to each other with the reflector plate main body, and the other end extends to shell towards the direction of shell and contacts, whereby, the reflector plate extension forms in above-mentioned space and blocks screen-wall, to reach dust reduction capability.
In addition, utilize the elasticity of the material of reflector plate own, can make the reflector plate extension keep and the contacted state of shell, thus the utility model in the space the formed barrier that blocks can keep long-acting.
The reflector plate extension of module backlight of the present utility model can prevent that dust from invading in the module backlight, protects the screen image quality of LCD to avoid dust whereby and destroys, and also can save maintenance cost and exempt inconvenience.
[description of drawings]
Fig. 1: the module side cross section view backlight of prior art.
Fig. 2: the side cross section view of the utility model module first embodiment backlight.
Fig. 3: the side cross section view of the utility model module second embodiment backlight.
Fig. 4: the side cross section view of the utility model module the 3rd embodiment backlight.
Fig. 5 A: the utility model reflector plate synoptic diagram.
Fig. 5 B: the reflector plate synoptic diagram of the utility model tool tool marks.
Fig. 6: the side cross section view of the utility model module the 4th embodiment backlight.
Fig. 7: the side cross section view of the utility model module the 5th embodiment backlight.
[embodiment]
In view of the shortcoming that above-mentioned prior art caused, the utility model provides a kind of module backlight, and discloses module internal structure backlight (with reference to figure 2).Module 20 backlight comprises a light source (not shown), a light guide plate 204, a shell 211 and a reflector plate 203.
The side surface 2042 that light guide plate 204 has a upper surface 2043, a lower surface 2041 and is connected with upper surface 2043, lower surface 2041, wherein the function of upper surface 2043 is in order to output light.In addition, the light source that does not show has an exiting surface (not shown), and light guide plate 204 is arranged at the exiting surface of light source, and the light source that does not show is a side surface (this side surface also is not shown among the figure) that is arranged at light guide plate 204.
After the light that light source produced is incident in light guide plate 204, can intersperse among light guide plate 204 inside everywhere because of the interface total reflection.Light is upper surface 2043 outgoing by light guide plate 204, behind the blooming piece 205 through being arranged at upper surface 2043, and then becomes the backlight of liquid crystal panel 206.The lower surface 2041 of light guide plate 204 and side surface 2042 set reflector plates 203 are in order to improving the utilization rate of light, avoid light through lower surface 2041 outgoing and loss.
Shell 211 is in order to holding light guide plate 204 and light source (not shown), and in order to install the various inner members of module 20 backlight.Shell 211 can be made up of frame 201 before a backboard 202 and.As shown in Figure 2, light guide plate 204 is to be carried on the backboard 202 with its lower surface 2041.A shell 211 and a liquid crystal panel 206 are formed the box like structure of a hollow.Just as in the explanation of known techniques, though Utopian shell 211 should be air-tight state after making up with liquid crystal panel 206, yet, as shown in Figure 2, still may form a gap 208 between preceding frame 201 and the backboard 202.And form a space 210 between shell 211 and the side surface 2042, and space 210 has a width L1.
At the shortcoming of gap 208 with space 210 ingress of dust that brings, the utility model is to utilize reflector plate 203 to solve the aforesaid drawbacks.Reflector plate 203 has a reflector plate main body 2031 and a reflector plate extension 2032.Reflector plate main body 2031 cover part light guide plate 204.With Fig. 2 is example, and reflector plate main body 2031 is covered in lower surface 2041.One end of reflector plate extension 2032 links to each other with reflector plate main body 2031, and the other end of reflector plate extension 2032 extends to shell 211 towards the direction of shell 211 and contacts.Utilize reflector plate extension 2032 to contact, form and block screen-wall to reach the dustproof function with shell 211.
Above-mentioned summary the utility model solves the shortcoming of gap 208 and space 210 ingress of dust that brings.Yet, about reflector plate extension 2032 and shell 211 contacted embodiments, and unspecified.Therefore, next with conjunction with figs., describe reflector plate extension 2032 and shell 211 contacted embodiments in detail.
See also Fig. 2, reflector plate main body 2031 covers the lower surface 2041 of light guide plate 204 at least.Among first embodiment as shown in Figure 2, reflector plate 203 is the lower surfaces 2041 and side surface 2042 that cover light guide plate 204, can further strengthen the utilization rate of light.Reflector plate extension 2032 comprises the relative first end 2032a and one second an end 2032b, and the first end 2032a links to each other with reflector plate main body 2031.Utilize reflector plate extension 2032 from the length L 2 of first end 2032a to the second end 2032b greater than width L1, can make reflector plate extension 2032 lean in shell 211.In this embodiment, reflector plate extension 2032 is to lean in preceding frame 201.Thus, reflector plate extension 2032 can form and block barrier, has the effect that prevents that dust from invading.
Secondly, utilize the elastic properties of materials of reflector plate 203, make above-mentioned included angle A 1 for changing.Even if the effect of external force or rising-heat contracting-cold and make the width L1 of 211 on side surface 2042 and shell change, reflector plate extension 2032 still can keep leaning on the state in shell 203.Therefore, the barrier that blocks of dust provided by the utility model is for effectively long-time.
Fig. 3 is second embodiment of the present utility model, and element wherein is identical with first embodiment shown in Figure 2 substantially, no longer repeated description.Fig. 3 and Fig. 2 main difference part are the position of reflector plate extension 2032.The reflector plate main body 2031 of Fig. 3 is the side surfaces 2042 that cover light guide plate 204, and compared to Fig. 2, the upper surface 2043 of light guide plate 204 is approached in the position of reflector plate extension 2032 shown in Figure 3.Being covered in the mode of side surface 2042 about reflector plate main body 2031, is example as Fig. 3, can adopt double faced adhesive tape 2040 to attach.
Though the reflector plate extension 2032 of Fig. 3 is because of the position difference, and different with the structure of Fig. 2.Yet, utilize the width L1 of the length L 2 of reflector plate extension 2032 greater than space 210, still can make reflector plate extension 2032 lean in shell 211.Add the elasticity of utilizing reflector plate 203 materials own, still can make to form included angle A 1 between reflector plate main body 2031 and the reflector plate extension 2032.And included angle A 1 also can change with width L1, make reflector plate extension 2032 in the space the 210 formed barriers that block can keep long-acting.
Please refer to Fig. 4, is the utility model the 3rd embodiment, and element wherein is identical substantially with Fig. 3, no longer repeats to state narration.Difference is among Fig. 4 that the reflector plate 203 that covers side surface 2042 and lower surface 2041 is one-body molded.And the side surface 2042 and lower surface 2041 of light guide plate 204 shown in Figure 3 are covered by two reflector plates 203 respectively.
About reflector plate 203 of the present utility model, see also Fig. 5 A.Reflector plate 203 has a processing broken line 301, reflector plate 203 is divided into a reflector plate main body 2031 and a reflector plate extension 2032.Actually add man-hour, also can form tool marks 302 in processing broken line 301 places.Shown in Fig. 5 B, reflector plate 203 has tool marks 302, and the degree of depth of tool marks 302 is less than reflector plate 203 thickness, does not cut off reflector plate main body 2031 and reflector plate extension 2032.
About the processing mode of tool marks 302, several embodiments are arranged.For example can utilize punch table (punch machining) to get several points, but the straight line that points are formed is counted in bending thus when using reflector plate.This embodiment that utilizes punch table to produce processing tool marks 302 has the advantage that fast and accurately defines processing broken line 301.Yet, about the embodiment of above-mentioned generation processing tool marks 302, only be the adoptable wherein a kind of embodiment of the utility model, be not in order to limit feature of the present invention.
Seeing also Fig. 6, is the 4th embodiment of the present utility model.Element among Fig. 6, cardinal principle is identical with aforementioned embodiments, no longer repeated description.Yet the difference of Fig. 6 and Fig. 4 is in the reflector plate extension 2032 of Fig. 6 does not process broken line 301.In addition, reflector plate extension 2032 is bent once, and just reflector plate 203 is inserted width L3 by bending twice to such an extent as to form one.Utilize this to insert width L3, reflector plate extension 2032 is filled in the middle of the space 210, make reflector plate extension 2032 equally have the dustproof effect.Remove the processing that needs to process broken line 301 simultaneously from and handle, compared to aforesaid embodiment, the embodiment of Fig. 6 is comparatively simple.
Except the embodiment of Fig. 6 need not be processed the broken line 301, the 5th embodiment shown in Figure 7 is the same not to need to process broken line 301 yet.Seeing also Fig. 7, is the improvement embodiment of Fig. 6.As shown in Figure 7, be with 2032 bendings of reflector plate extension directly inserting space 210, therefore reflector plate extension 2032 need not be bent to form and insert width L3.Because reflector plate 203 is to be resilient material, so reflector plate extension 2032 can be crooked directly to fill in the space 210.
Because Fig. 6 and embodiment shown in Figure 7, reflector plate extension 2032 all is towards lower surface 2041 directions, bending downwards or crooked.Yet, also can be with reflector plate extension 2032 towards upper surface 2043 directions, upwards bending or crooked.Therefore, about Fig. 6 and reflector plate extension 2032 bend mode shown in Figure 7, emphasizing at this, is not in order to limit feature of the present utility model.In addition, above disclosed embodiment, though all have different structure each other, all be to utilize reflector plate 203 to prevent the dust intrusion, therefore still meet spirit of the present utility model.
Though the utility model is illustrated as above with preferred embodiments, so it is not only to terminate in the foregoing description in order to limit the utility model spirit with the utility model entity.
Claims (10)
1, a kind of module backlight is characterized in that: comprise:
One light source has an exiting surface;
One light guide plate is arranged at this exiting surface of this light source;
One shell holds this light guide plate and this light source, forms a space between this shell and this light guide plate; And
One reflector plate, have a reflector plate main body and a reflector plate extension, this this light guide plate of reflector plate main body cover part, an end of this reflector plate extension links to each other with this reflector plate main body, and the other end of this reflector plate extension extends to this shell towards the direction of this shell and contacts.
2, module backlight as claimed in claim 1 is characterized in that: this light guide plate has upper surface, an a lower surface of an output light and a side surface that is connected with this upper surface, this lower surface.
3, module backlight as claimed in claim 2 is characterized in that: this reflector plate main body covers this side surface of this light guide plate.
4, module backlight as claimed in claim 2 is characterized in that: this reflector plate main body covers this lower surface of this light guide plate.
5, module backlight as claimed in claim 2 is characterized in that: this space is between this shell and this side surface.
6, module backlight as claimed in claim 1, it is characterized in that: this reflector plate extension comprises relative first end and one second end, this first end links to each other with this reflector plate main body, this reflector plate extension leans in this shell, this reflector plate extension from this first end the length to this second end greater than the width in this space.
7, module backlight as claimed in claim 1 is characterized in that: form an angle between this reflector plate main body and this reflector plate extension.
8, module backlight as claimed in claim 1 is characterized in that: this reflector plate has a processing broken line, and this processing broken line is divided into this reflector plate main body and this reflector plate extension with this reflector plate.
9, module backlight as claimed in claim 8, it is characterized in that: this reflector plate also has tool marks, is arranged at this processing broken line place, and the degree of depth of these tool marks is less than this reflector plate thickness.
10, module backlight as claimed in claim 1, it is characterized in that: this reflector plate is made by resilient material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620115183 CN2911732Y (en) | 2006-05-18 | 2006-05-18 | Backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620115183 CN2911732Y (en) | 2006-05-18 | 2006-05-18 | Backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2911732Y true CN2911732Y (en) | 2007-06-13 |
Family
ID=38133599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620115183 Expired - Fee Related CN2911732Y (en) | 2006-05-18 | 2006-05-18 | Backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2911732Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839447B (en) * | 2009-03-16 | 2011-12-28 | 北京京东方光电科技有限公司 | Backlight source |
| CN102635810A (en) * | 2012-02-15 | 2012-08-15 | 深圳市华星光电技术有限公司 | Backlight module |
| CN103727434A (en) * | 2013-12-20 | 2014-04-16 | 苏州东山精密制造股份有限公司 | Sidelight type backlight module |
| CN112946952A (en) * | 2019-12-11 | 2021-06-11 | 南京瀚宇彩欣科技有限责任公司 | Display device and backlight module |
| TWI780937B (en) * | 2021-09-30 | 2022-10-11 | 瑞儀光電股份有限公司 | Backlight Modules and Displays |
-
2006
- 2006-05-18 CN CN 200620115183 patent/CN2911732Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839447B (en) * | 2009-03-16 | 2011-12-28 | 北京京东方光电科技有限公司 | Backlight source |
| CN102635810A (en) * | 2012-02-15 | 2012-08-15 | 深圳市华星光电技术有限公司 | Backlight module |
| WO2013120297A1 (en) * | 2012-02-15 | 2013-08-22 | 深圳市华星光电技术有限公司 | Backlight module |
| CN103727434A (en) * | 2013-12-20 | 2014-04-16 | 苏州东山精密制造股份有限公司 | Sidelight type backlight module |
| CN112946952A (en) * | 2019-12-11 | 2021-06-11 | 南京瀚宇彩欣科技有限责任公司 | Display device and backlight module |
| TWI780937B (en) * | 2021-09-30 | 2022-10-11 | 瑞儀光電股份有限公司 | Backlight Modules and Displays |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070613 Termination date: 20130518 |