CN207780428U - Backlight module - Google Patents
Backlight module Download PDFInfo
- Publication number
- CN207780428U CN207780428U CN201721823918.1U CN201721823918U CN207780428U CN 207780428 U CN207780428 U CN 207780428U CN 201721823918 U CN201721823918 U CN 201721823918U CN 207780428 U CN207780428 U CN 207780428U
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- China
- Prior art keywords
- backboard
- protrusion
- backlight module
- light guide
- guide plate
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Abstract
A kind of backlight module, including backboard are disclosed, and is sequentially located at reflecting plate, light guide plate and optical diaphragm on backboard, optical diaphragm includes multiple optical elements stacked gradually；Backlight is located on circuit board, adjacent with the side of light guide plate.Wherein, light guide plate includes multiple protrusions towards backboard so as to form gap between reflecting plate and backboard.Backboard dynamic pressure hickie and static pressure hickie caused by the extruding of reflecting plate and light guide plate are not only solved, and does not interfere with the optical property of light guide plate, the display quality using the liquid crystal display of the backlight module can be effectively improved.
Description
Technical field
The utility model is related to field of liquid crystal display, relate more specifically to a kind of backlight module.
Background technology
Liquid crystal display (Liquid Crystal Display, LCD) is with light-weight, thickness is thin, low in energy consumption and radiation
The advantages that small, it has also become the mainstream of display device.Liquid crystal display die set (LCD Module, LCM) includes mainly backlight module
(Back Light Module) and liquid crystal display panel (LCD Panel).Since liquid crystal itself does not have the characteristics of luminescence, therefore, it is necessary to
A light emitting source is added on liquid crystal display panel bottom surface, is finally reached full color rendering effect, and the effect of backlight module is to supply
The planar light source answered sufficient brightness and be evenly distributed, enables liquid crystal display panel normally to show picture.
Fig. 1 shows the schematic cross-section of prior art backlight module non-light source side；Fig. 2 shows backlight modules in the prior art
In light source side schematic cross-section.As depicted in figs. 1 and 2, prior art backlight module includes backboard 2, on backboard 2 under
It is disposed with reflecting plate 3, light guide plate 4, optical diaphragm 5, down polaroid 6, display panel 7 and upper polaroid 8 upwards；Backlight
Source 11 is located on circuit board 12, adjacent with the side of light guide plate 4.Light guide plate 4 and reflecting plate in the backlight module of the prior art
3 with backboard 2 be to be in close contact, can cause the backlight module in mechanical oscillation and impact process to reflecting plate 3 with it is guide-lighting
Plate 4 is squeezed, and to the problems such as dynamic pressure hickie is with static pressure hickie occur, causes the liquid crystal display for using the backlight module
Show that quality reduces.
Fig. 3 shows the schematic cross-section of another backlight module of prior art solution.
As shown in figure 3, prior art solution provide another backlight module include backboard 2, on backboard 2 from it is lower to
On be disposed with reflecting plate 3, light guide plate 4, optical diaphragm 5.Wherein, backboard 2 includes prolonging upwards from 2 left and right ends edge of backboard
First side plate 22 and second side plate 23 vertical with backboard 2 stretched, backlight 11 are fixed on 22 inner wall of the first side plate.The backlight
Module further includes multiple positioning units 13, and surface opposite with backboard 2 on light guide plate 4 is fixed in the upper end of multiple positioning units 13
On, the lower end of multiple positioning units 13 is fixed on the upper bottom surface 21 of backboard 2.Reflecting plate 3 is fixed on multiple positioning units 13
In interfix portion.There are gaps 16 between light guide plate 4, reflecting plate 3 and backboard 2.
The backlight module that prior art solution provides is single by the way that multiple positioning are arranged between light guide plate 4 and backboard 2
Member 13 so that form gap 16 between light guide plate 4, reflecting plate 3 and backboard 2, solve light guide plate 4 and reflecting plate 3 and the back of the body
The hard friction for contacting and occurring between plate 2, but prior art solution provide backlight module, light guide plate 4 with it is multiple
The reflectivity of the fixed position light guide plate 4 of positioning unit 13 can change, and can then influence the optical property of light guide plate 4, according to
The old display quality that can influence the liquid crystal display using the backlight module.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of backlight module, can effectively solve dynamic pressure hickie with
The problem of static pressure hickie, improves the display quality of liquid crystal display.
According to a kind of backlight module provided by the utility model, including backboard, and it is sequentially located at the reflection on backboard
Plate, light guide plate and optical diaphragm, the optical diaphragm include multiple optical elements stacked gradually；Backlight is located at circuit board
On, it is adjacent with the side of the light guide plate.Wherein, the light guide plate includes multiple protrusions towards the backboard, so that institute
It states and forms gap between reflecting plate and the backboard.
Preferably, the circuit board is located on the backboard, and the circuit board is at least partially disposed at the backboard and institute
It states between light guide plate.
Preferably, multiple protrusions include at least first protrusion and the second protrusion, and first protrusion is located at described lead
The position at the edge of tabula rasa, second protrusion is adjacent with the position of the circuit board, and the light guide plate is parallel with the backboard.
Preferably, the height of second protrusion is less than the height of first protrusion, second protrusion and the electricity
The upper surface of road plate contacts.
Preferably, first protrusion is identical with the height of the second protrusion, second protrusion and the circuit board
Side contact.
Preferably, at least one protrusion is contacted with the backboard, and the backboard includes at least one first groove, until
A few protrusion is placed in first groove.
Preferably, first protrusion includes the second groove, and the reflecting plate includes at least one and second groove
Matched third protrusion.
Preferably, first protrusion includes third groove, and the edge of the reflecting plate is inserted into the third groove.
Preferably, further include support element, the support element is between the circuit board and the backboard.
Preferably, the backboard, first protrusion and the reflecting plate are bolted.
In the utility model preferred embodiment, by the way that the first protrusion and the second protrusion are arranged on light guide plate so that
There are gap structures between reflecting plate and backboard, and it is white to not only solve backboard dynamic pressure caused by the extruding of reflecting plate and light guide plate
Spot and static pressure hickie, and the optical property of light guide plate is not interfered with, the liquid crystal using the backlight module can be effectively improved
The display quality of display.
Description of the drawings
By referring to the drawings to the description of the utility model embodiment, above-mentioned and other mesh of the utility model
, feature and advantage will be apparent from.
Fig. 1 shows the schematic cross-section of the backlight module non-light source side of the prior art；
Fig. 2 shows the schematic cross-sections of the backlight module light source side of the prior art；
Fig. 3 shows the schematic cross-section of another backlight module of prior art solution；
Fig. 4 shows the schematic cross-section of the backlight module non-light source side of the utility model first embodiment；
Fig. 5 shows the schematic cross-section of the backlight module light source side of the utility model first embodiment；
Fig. 6 shows the schematic cross-section of the backlight module light source side of the utility model second embodiment；
Fig. 7 shows the schematic cross-section of the backlight module non-light source side of the utility model 3rd embodiment；
Fig. 8 shows the schematic cross-section of the backlight module non-light source side of the utility model fourth embodiment.
Specific implementation mode
Hereinafter reference will be made to the drawings is more fully described the utility model.In various figures, identical element is using similar
Reference numeral indicate.For the sake of clarity, the various pieces in attached drawing are not necessarily to scale.In addition, may in figure
Certain well known parts are not shown.
Many specific details of the utility model, such as the structure of component, material, size, place are described hereinafter
Science and engineering skill and technology, to be more clearly understood that the utility model.But just as the skilled person will understand,
The utility model can not be realized according to these specific details.
It should be appreciated that when describing the structure of component, it is known as positioned at another floor, another area when by a floor, a region
When domain " above " or " top ", can refer to above another layer, another region, or its with another layer, it is another
Also include other layers or region between a region.Also, if by part turnover, this layer, a region will be located at it is another
Layer, another region " following " or " lower section ".
The utility model embodiment is described in detail with reference to the accompanying drawings.
Fig. 4 shows the schematic cross-section of the backlight module non-light source side according to the utility model first embodiment；
As shown in figure 4, including being located at 2 outside of backlight according to the backlight module that the utility model first embodiment provides
Photo-shield strip 1, photo-shield strip 1 can use polyester film, improve the display effect of the liquid crystal display using the backlight module.Backboard
It is equipped with reflecting plate 3, light guide plate 4, optical diaphragm 5, down polaroid 6, display panel 7 and upper polaroid on 2 successively from bottom to top
8, wherein optical diaphragm 5 includes the multiple optical elements stacked gradually.Backboard 2 includes being upwardly extended along 2 end face edge of backboard
First side plate 22 vertical with backboard 2.Further include glue frame 14 in the non-light source side of the backlight module, glue frame 14 is arranged in backboard 2
Upper bottom surface 21 on, for being limited to light guide plate 4, optical diaphragm 5 and display panel 7.
Fig. 5 shows the schematic cross-section of the backlight module light source side according to the utility model first embodiment.
As shown in figure 5, the light source side of backlight module include circuit board 12 and be set on circuit board 12 by multiple hairs
The backlight 11 of optical diode composition, circuit board 12 is located between light guide plate 4 and the upper bottom surface 21 of backboard 2, and backlight 11 is set
It is placed between the end face of light guide plate 4 and the second side plate 23.Backlight 11 can be cold-cathode fluorescence lamp (cold cathode
Fluorescent lamps, CCFL) or light emitting diode (light emitting diode, LED), metal halide lamp
Deng being illustrated in the present embodiment using LED.In the light source side of backlight module, backboard 2 include along 2 end face edge of backboard to
Second side plate 23 vertical with backboard 2 of upper extension, the direction horizontal buckling where the second side plate 23 to light guide plate 4 of backboard 2,
Storage tank 17 is formed, backlight 11 is inserted in along the end face of light guide plate 4 in storage tank 17.The upper water of the bending part of second side plate 23
It is fixed by fixing piece 10 between plane and display panel 7.Light leakage in order to prevent, between storage tank 17 and backlight 11
Equipped with reflecting element 9, the light leakage for preventing backlight 11 from sending out.One is provided between backlight 11 and the end face of light guide plate 4 instead
Piece 31 is penetrated, front projection is carried out in the light reflection for sending out backlight 11 to light guide plate 4, the light for preventing backlight 11 from sending out
Leakage, material is, for example, polyolefine fiber.
In conjunction with shown in Fig. 4 and Fig. 5, wherein it is equipped with the first protrusion 41 and second protrusion 42 at the both ends of light guide plate 4, first
Protrusion 41 is located at the non-light source side of backlight module, and the second protrusion 42 is located at the light source side of backlight module.First protrusion 41 and second
Groove 43 is formed between protrusion 42, reflecting plate 3 is inserted and fixed in groove 43, and the depth of groove 43 is more than the thickness of reflecting plate 3
Degree forms gap 16 between reflecting plate 3 and the upper bottom surface 21 of backboard 2.The bottom surface of first protrusion 41 is located at the upper bottom surface of backboard 2
On 21, the bottom surface of the second protrusion 42 is located on circuit board 12, and the height of the first protrusion 41 is more than the height of the second protrusion 42 so that
Light guide plate 4 is parallel with backboard 2.
Fig. 6 shows the schematic cross-section of the backlight module light source side according to the utility model second embodiment.
As shown in fig. 6, relative to shown in Fig. 5, difference lies in：It is additionally provided between circuit board 12 and the upper bottom surface 21 of backboard 2
Support element 13 is used for protection circuit plates 12.One end that light guide plate 4 is located at light source side is located on circuit board 12, the second protrusion 42
Between the both ends of light guide plate 4, the bottom surface of the second protrusion 42 is located on the upper bottom surface 21 of backboard 2, right side and circuit board 12 and
The left side of support element 13 is in contact, and the first protrusion 41 is identical as the height of the second protrusion 42 so that light guide plate 4 and backboard 2 are flat
Row.
Fig. 7 shows the schematic cross-section of the backlight module non-light source side according to the utility model 3rd embodiment.
As shown in fig. 7, relative to Fig. 4, difference lies in：Backboard 2 further includes the first groove 211, the first groove 211
In 41 lower section of the first protrusion, the first protrusion 41 is inserted into the first groove 211, and the first groove 211 plays light guide plate 4 in the work of limit
With.The bottom surface of first protrusion 41 is folded upward to form the second U-shaped groove 411, and reflecting plate 3 is located at backlight module non-light source side
One end include third protrusion 32, third protrusion 32 is inserted into inside the second groove 411, and the second groove 411 and third protrusion 32 are right
Reflecting plate 3 plays the role of limit.
Fig. 8 shows the schematic cross-section of the backlight module non-light source side according to the utility model fourth embodiment.
As shown in figure 8, relative to Fig. 4, difference lies in：First raised 41 bottom surfaces form horizontal U along horizontal buckling
The third groove 412 of type, one end that reflecting plate 3 is located at backlight module non-light source side are inserted into third groove 412, third groove
412 pairs of reflecting plates 3 play the role of limit.Further include first through hole 200, first through hole 200 in the backlight module non-light source side
Through backboard 2 and the first protrusion 41 and reflecting plate 3, by through-hole between the first protrusion 41, reflecting plate 3 and bottom plate 21
200 insertion bolts 212 are fixed.
In conclusion in the utility model preferred embodiment, by the way that the first protrusion and second is arranged on light guide plate
Protrusion so that there are gap structures between reflecting plate and backboard, not only solve backboard and are made to the extruding of reflecting plate and light guide plate
At dynamic pressure hickie and static pressure hickie, and do not interfere with the optical property of light guide plate, can effectively improve using the backlight
The display quality of the liquid crystal display of module.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
It is as described above according to the embodiments of the present invention, these embodiments there is no all details of detailed descriptionthe,
The specific embodiment that the utility model is only described is not limited yet.Obviously, as described above, many modification and change can be made
Change.These embodiments are chosen and specifically described to this specification, is in order to preferably explain the principles of the present invention and actually to answer
With to enable skilled artisan to utilize the utility model and repairing on the basis of the utility model well
Change use.The utility model is limited only by the claims and their full scope and equivalents.
Claims (10)
1. a kind of backlight module, including backboard, and it is sequentially located at reflecting plate, light guide plate and optical diaphragm on backboard, institute
It includes multiple optical elements stacked gradually to state optical diaphragm；Backlight is located on circuit board, the side with the light guide plate
It is adjacent.It is characterized in that, the light guide plate includes multiple protrusions towards the backboard.
2. backlight module according to claim 1, which is characterized in that the circuit board is located on the backboard, described
Circuit board is at least partially disposed between the backboard and the light guide plate.
3. backlight module according to claim 2, which is characterized in that multiple protrusions include at least first protrusion and the
Two protrusions, first protrusion are located at the edge of the light guide plate, the position of the position and the circuit board of second protrusion
Adjacent, the light guide plate is parallel with the backboard.
4. backlight module according to claim 3, which is characterized in that it is convex that the height of second protrusion is less than described first
The height risen, second protrusion are contacted with the upper surface of the circuit board.
5. backlight module according to claim 3, which is characterized in that the height of first protrusion and second protrusion
Identical, second protrusion is contacted with the side of the circuit board.
6. backlight module according to claim 1, which is characterized in that at least one protrusion is contacted with the backboard,
The backboard includes at least one first groove, and at least one protrusion is placed in first groove.
7. backlight module according to claim 1, which is characterized in that first protrusion includes the second groove, described anti-
It includes at least one and second matching grooves third protrusions to penetrate plate.
8. backlight module according to claim 1, which is characterized in that first protrusion includes third groove, described anti-
The edge for penetrating plate is inserted into the third groove.
9. backlight module according to claim 4 or 5, which is characterized in that further include support element, the support element is located at institute
It states between circuit board and the backboard.
10. backlight module according to claim 9, which is characterized in that the backboard, first protrusion and described anti-
Plate is penetrated to be bolted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721823918.1U CN207780428U (en) | 2017-12-22 | 2017-12-22 | Backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721823918.1U CN207780428U (en) | 2017-12-22 | 2017-12-22 | Backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207780428U true CN207780428U (en) | 2018-08-28 |
Family
ID=63228416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721823918.1U Active CN207780428U (en) | 2017-12-22 | 2017-12-22 | Backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207780428U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110488536A (en) * | 2019-08-27 | 2019-11-22 | 深圳市泰坦士科技有限公司 | A kind of liquid crystal display device |
| CN112859408A (en) * | 2021-02-06 | 2021-05-28 | 安徽赛迈特光电股份有限公司 | Highlight quantum dot display |
| CN115327817A (en) * | 2022-08-31 | 2022-11-11 | 合肥京东方光电科技有限公司 | Backlight module and display module |
-
2017
- 2017-12-22 CN CN201721823918.1U patent/CN207780428U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110488536A (en) * | 2019-08-27 | 2019-11-22 | 深圳市泰坦士科技有限公司 | A kind of liquid crystal display device |
| CN112859408A (en) * | 2021-02-06 | 2021-05-28 | 安徽赛迈特光电股份有限公司 | Highlight quantum dot display |
| CN115327817A (en) * | 2022-08-31 | 2022-11-11 | 合肥京东方光电科技有限公司 | Backlight module and display module |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee after: Kunshan Longteng Au Optronics Co Address before: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee before: Kunshan Longteng Optronics Co., Ltd. |