CN204086757U - Backlight assembly and liquid crystal display - Google Patents
Backlight assembly and liquid crystal display Download PDFInfo
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- CN204086757U CN204086757U CN201420436542.9U CN201420436542U CN204086757U CN 204086757 U CN204086757 U CN 204086757U CN 201420436542 U CN201420436542 U CN 201420436542U CN 204086757 U CN204086757 U CN 204086757U
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- backlight
- lamp
- cavity
- sidewall
- backlight assembly
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Abstract
The utility model discloses a kind of backlight assembly, this backlight assembly comprises the backlight cavity of a side opening, be provided with backlight in backlight cavity, backlight cavity has a base plate be oppositely arranged with opening, this base plate is provided with the light reflection that sent by the backlight reflector plate to opening; Backlight comprises at least two lamp bars, and backlight cavity comprises at least one group of sidewall be oppositely arranged between two, and two side is respectively provided with at least one lamp bar, and on lamp bar, the primary optical axis of each single lamp and reflector plate are that sharp angle α is arranged.The invention also discloses a kind of liquid crystal display.The utility model solves the problem that backlight in prior art shows lamp shadow, improves the effect of liquid crystal display.
Description
Technical field
The utility model relates to field of liquid crystal, particularly relates to a kind of backlight assembly and liquid crystal display.
Background technology
Traditional liquid crystal display product, main direct LED backlight technology or the side entering-type LED backlight source technology of adopting throws light on to liquid crystal panel, to realize the display of picture.At present, direct LED backlight technology mainly adopts LED to mount lens as core component, lens are utilized to expand the dispersion angle of LED light, and utilize the air groove formed between LED and diffuser plate, for LED light provides light mixing distance, and then arrive diffuser plate again after LED light is mixed, by diffuser plate, LED light is done further after DIFFUSION TREATMENT, expose to equably on whole liquid crystal panel.But this design is in order to meet display effect, generally can sample more LED.And under development trend along with liquid crystal display product low cost, all big enterprises, in order to control cost, generally adopt and reduce by LED number and reduce cost of products.
When LED number reduces, ensure the effect just more difficult control that backlight shows, and, in the design of traditional direct-type backlight, due to the bottom that this LED is arranged on backboard, directly diffuser plate is irradiated, when LED is less, more obviously, so that will there is lamp shadow problem during backlight display in the phenomenon that screen is crossed in the bright dipping of LED front, had a strong impact on the display effect of LCD product.
Foregoing only understands the technical solution of the utility model for auxiliary, does not represent and admits that foregoing is prior art.
Utility model content
Fundamental purpose of the present utility model is to solve the technical matters that backlight shows lamp shadow.
For achieving the above object, the utility model provides a kind of backlight assembly, described backlight assembly comprises the backlight cavity of a side opening, backlight is provided with in described backlight cavity, described backlight cavity has a base plate relative with described opening, this base plate is provided with the light reflection that sent by the described backlight reflector plate to described opening; Described backlight comprises at least two lamp bars, and described backlight cavity comprises at least one group of sidewall be oppositely arranged, and sidewall described in two is respectively provided with at least one described lamp bar, and on described lamp bar, the primary optical axis of each single lamp and described reflector plate are that sharp angle α is arranged.
Preferably, the position being located at the described lamp bar on sidewall that described backlight cavity two relatively arranges is corresponding, and on described lamp bar on two side, the primary optical axis of each single lamp is identical with the angle angle of described reflector plate.
Preferably, it is the installed surface that acute angles beta is arranged that the described sidewall of backlight cavity is provided with described base plate, and described lamp bar is located on described installed surface.
Preferably, the sidewall of described backlight cavity is mutually vertical with base plate, described lamp bar comprises lamp socket and is arranged on the described single lamp on described lamp socket, the rectangular triangle of xsect of described lamp socket, described single lamp is arranged on the side at the corresponding described hypotenuse place of described lamp socket, the corresponding side at described right-angle triangle one straight flange place of described lamp socket and the sidewall of described backlight cavity are fitted fixing, and the side described lamp socket being provided with described single lamp is towards described reflector plate direction, and be that acute angles beta is arranged with described reflector plate.
Preferably, the sidewall of described backlight cavity comprises and the vertically disposed body of described base plate and the installation portion that extended to described opening direction by described body, and the inside surface of this installation portion is that inclined-plane is arranged, to form described installed surface.
Preferably, described β is more than or equal to 60 degree, is less than or equal to 80 degree.
Preferably, described single lamp is lens.
Preferably, described reflector plate is covered with described base plate.
Preferably, described backlight assembly also comprises diffusion sheet and blooming piece, and described diffusion sheet is located on the opening of described backlight cavity, and described blooming piece is located at the side of described diffusion sheet described opening dorsad.
In addition, for achieving the above object, the utility model also provides a kind of liquid crystal display, and described liquid crystal display comprises backlight assembly as above; Described backlight assembly comprises the backlight cavity of a side opening, backlight is provided with in described backlight cavity, described backlight cavity has a base plate relative with described opening, this base plate is provided with the light reflection that sent by the described backlight reflector plate to described opening; Described backlight comprises at least two lamp bars, and described backlight cavity comprises at least one group of sidewall be oppositely arranged, and sidewall described in two is respectively provided with at least one described lamp bar, and on described lamp bar, the primary optical axis of each single lamp and described reflector plate are that sharp angle α is arranged.
The utility model is by arranging lamp bar respectively at the both sides sidewall of backlight cavity, and the primary optical axis of each single lamp and reflector plate are that sharp angle α is arranged on lamp bar, when lamp bar is lighted, the a light part directly directive opening direction that lamp bar sends, another part is by also directive opening direction mixing with it after reflectors reflects, form the bright dipping of different angles, make the uniform light be finally irradiated on liquid crystal panel, thus the lamp shadow phenomenon occurred when preventing backlight to show, improve the effect of liquid crystal display.
Accompanying drawing explanation
Fig. 1 is the one-piece construction schematic diagram of the utility model backlight assembly one embodiment;
Fig. 2 is the structural representation of local A in Fig. 1;
Fig. 3 is the assembling exploded view of Fig. 1;
Fig. 4 is the partial structurtes schematic diagram of another embodiment of the utility model backlight assembly.
The realization of the utility model object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of backlight assembly.
Referring to figs. 1 through Fig. 3, in one embodiment, described backlight assembly comprises the backlight cavity 10 that side has opening 101, backlight is provided with in described backlight cavity 10, described backlight cavity 10 has a base plate 11 relative with described opening 101, this base plate 11 is provided with the light reflection that sent by the described backlight reflector plate 30 to described opening 101; Described backlight comprises at least two lamp bars 40, described backlight cavity 10 comprises at least one group of sidewall be oppositely arranged, and sidewall described in two being respectively provided with at least one described lamp bar 40, on described lamp bar 40, the primary optical axis L of each single lamp and described reflector plate 30 are arranged in sharp angle α.
It should be noted that, angle between the primary optical axis L of each single lamp on lamp bar 40 and reflector plate 30 being set to acute angle is to ensure that the light that lamp bar 40 sends can be irradiated to reflector plate 30, after reflex by reflector plate 30, opening 101 place of backlight cavity 10 can be radiated to uniformly, thus the light direct irradiation avoiding lamp bar 40 to send is on liquid crystal, liquid crystal display is made to occur the problem that light and shade is inconsistent.In addition, because lamp bar 40 and reflector plate 30 are not in the same plane, make the reflector space of reflector plate 30 comparatively large, improve the reflective surface area of light, further increase light mixing effect.
Opening 101 side that it should be noted that backlight cavity 10 is provided with the device of diffused light source such as diffuser plate 20 grade.When lamp bar 40 powers on, the light part that lamp bar 40 sends directly exposes on diffuser plate 20 through backlight cavity 10, another part also exposes on diffuser plate 20 through backlight cavity 10 after reflector plate 30 reflects, this two parts light is when through backlight cavity 10, mutual mixing, form uniform mixing light to expose on diffuser plate 20, and expose to whole liquid crystal panel equably after diffuser plate 20 further DIFFUSION TREATMENT, liquid crystal is lighted.
Wherein, the magnitude setting of lamp bar 40 is arranged according to the size of liquid crystal display and cost requirement, for ensureing display effect, need ensure at least to arrange two lamp bars 40, and these two lamp bars 40 to need to be separately positioned on backlight cavity 10 on two sidewalls be oppositely arranged, to make light complementary, improve brightness and the homogeneity of backlight.Wherein, the implementation arranged in acute angle between lamp bar 40 and reflector plate 30 is various, such as, the sidewall of backlight cavity 10 or partial sidewall are arranged to and the inclined-plane of base plate 11 in acute angle, lamp bar 40 is located on this inclined-plane, and lamp bar 40 keeps original structure constant, or the sidewall keeping backlight cavity 10 is that straight wall is constant, the shape changing lamp bar 40 makes after on its sidewall being arranged on backlight cavity 10, and lamp bar 40 is arranged in acute angle between the primary optical axis L of each single lamp and reflector plate 30.
The utility model is by arranging lamp bar 40 respectively at the both sides sidewall of backlight cavity 10, and the primary optical axis L of each single lamp and reflector plate 30 are arranged in sharp angle α on lamp bar 40, when lamp bar 40 is lighted, a light part directly directive opening 101 direction that lamp bar 40 sends, another part also directive opening 101 direction mixing with it after being reflected by reflector plate 30, form the bright dipping of different angles, make the uniform light be finally irradiated on liquid crystal panel, thus the lamp shadow phenomenon occurred when preventing backlight to show, improve the effect of liquid crystal display.
Further, referring to figs. 1 through Fig. 3, in order to the light sent by lamp bar 40 reflexes to opening 101 place better, it is more even after light is mixed, the position being located at the described lamp bar 40 on described backlight cavity 10 liang of sidewalls be oppositely arranged is corresponding, and on described lamp bar 40 on two side, the primary optical axis L of each single lamp is identical with the angle angle of described reflector plate 30.Be understandable that, the light that lamp bar 40 on two side sends mutually compensates, mixes, define brightness and all higher light of degree of mixing to meet the demand of backlight, thus while guarantee backlight illumination, reduce the cost of backlight, and after lamp bar 40 minimizing, the energy consumption of liquid crystal display also decreases, and that even can do is thinner.
Being understandable that, following structure can being adopted realize to ensure that the primary optical axis L of each single lamp 41 on described lamp bar 40 and described reflector plate 30 are arranged in sharp angle α:
Referring to figs. 1 through Fig. 3, the described sidewall of backlight cavity 10 is provided with the installed surface 12 arranged in acute angles beta with described base plate 11, and described lamp bar 40 is located on described installed surface 12.The present embodiment is the angle being arranged to by the sidewall of backlight cavity 10 preset, during installation, only lamp bar 40 need be fixed on this installed surface 12 and can ensure that lamp bar 40 is acute angle with the angle of reflector plate 30, this structure is not only convenient for assembly, and mounted configuration is firm, reliable.
Concrete structure is as follows, the sidewall of described backlight cavity 10 comprises and the vertically disposed body of described base plate 11 13 and the installation portion 14 that extended to described opening 101 direction by described body 13, the inside surface of this installation portion 14 is that inclined-plane is arranged, to form described installed surface 12.
It should be noted that, above-mentioned is a preferred implementation of the present utility model, in other embodiments, different structures can also be had, such as, with reference to Fig. 4, the sidewall of described backlight cavity 10 is mutually vertical with base plate 11, described lamp bar 40 comprises lamp socket 42 and is arranged on the described single lamp 41 on described lamp socket 42, the rectangular triangle of xsect of described lamp socket 42, described single lamp 41 is arranged on the side at the corresponding described hypotenuse place of described lamp socket 42, the corresponding side at described right-angle triangle one straight flange place of described lamp socket 42 and the sidewall of described backlight cavity 10 are fitted fixing, and the side described lamp socket 42 being provided with described single lamp 41 is towards described reflector plate 30 direction, and arrange in acute angles beta with described reflector plate 30.
The object adopting this structure can realize the primary optical axis L of each single lamp 41 on described lamp bar 40 and described reflector plate 30 equally to arrange in sharp angle α.It should be noted that, when the rectangular leg-of-mutton lamp bar 40 of this xsect is installed on the sidewall of backlight cavity 10, the corresponding side at described right-angle triangle one straight flange place of this lamp socket 42 and the sidewall of described backlight cavity 10 are fitted fixing, and the side at the corresponding described hypotenuse place of this lamp socket 42 is towards described reflector plate 30 direction, and arrange in acute angles beta with described reflector plate 30, reflector plate 30 described in the light directive sent with bonding lamp 41, then reflex to opening 101 direction.
It should be noted that the angle of described β can be arbitrarily angled between 0 degree to 90 degree, certainly, in order to protect brightness and the light mixing effect of backlight, β described in the present embodiment is preferably greater than or equal to 60 degree, is less than or equal to 80 degree.Such as, in structure as shown in Figure 1, when β is 60 degree, the evolving path of the light that lamp bar 40 sends is that in figure, dotted line represents, can find out mixing of the uniform light of two lamp bars 40 from the evolving path of light, ensure that brightness and the homogeneity of backlight.
Further, with reference to Fig. 4, described single lamp 41 is lens.No. one time lens have the larger advantage of rising angle, thus, can strengthen the rising angle of lamp bar 40, and improve reflecting effect, and then avoid the side-looking angle of display device to occur bright border, and positive visual angle occurs dark space near the region of display bezel.
Further, referring to figs. 1 through Fig. 3, for ensureing the maximum reflection efficiency of reflector plate 30 pairs of light, described reflector plate 30 is covered with described base plate 11.Be understandable that, in direct-type backlight display device, owing to decreasing the installation site of lamp bar 40 on base plate 11, thus increase the area of reflector plate 30, make more light be reflected onto on liquid crystal, ensure that backlight illumination.
In addition, referring to figs. 1 through Fig. 3, described backlight assembly also comprises diffusion sheet 20 and blooming piece 50, and described diffusion sheet 20 is located on the opening 101 of described backlight cavity 10, and described blooming piece 50 is located at the side of described diffusion sheet 20 described opening 101 dorsad.Wherein, diffusion sheet 20 and blooming piece 50 carry out DIFFUSION TREATMENT further for the light penetrated from opening 101 backlight cavity 10, to be irradiated to equably on whole liquid crystal panel.
The utility model also provides a kind of liquid crystal display, and in one embodiment, this liquid crystal display comprises above-mentioned backlight assembly; The detailed construction of described backlight assembly can refer to above-described embodiment, repeats no more herein; Owing to employing above-mentioned backlight assembly in a liquid crystal display, therefore, the display effect of the utility model liquid crystal display is better, and cost is lower.
These are only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model instructions and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. a backlight assembly, comprise the backlight cavity of a side opening, be provided with backlight in described backlight cavity, described backlight cavity has a base plate relative with described opening, this base plate is provided with the light reflection that sent by the described backlight reflector plate to described opening; It is characterized in that, described backlight comprises at least two lamp bars, described backlight cavity comprises at least one group of sidewall be oppositely arranged, and sidewall described in two is respectively provided with at least one described lamp bar, and on described lamp bar, the primary optical axis of each single lamp and described reflector plate are that sharp angle α is arranged.
2. backlight assembly as claimed in claim 1, it is characterized in that, the position being located at the described lamp bar on sidewall that described backlight cavity two relatively arranges is corresponding, and on described lamp bar on two side, the primary optical axis of each single lamp is identical with the angle angle of described reflector plate.
3. backlight assembly as claimed in claim 2, it is characterized in that, it is the installed surface that acute angles beta is arranged that the described sidewall of backlight cavity is provided with described base plate, and described lamp bar is located on described installed surface.
4. backlight assembly as claimed in claim 2, it is characterized in that, the sidewall of described backlight cavity is mutually vertical with base plate, described lamp bar comprises lamp socket and is arranged on the described single lamp on described lamp socket, the rectangular triangle of xsect of described lamp socket, described single lamp is arranged on the side at the corresponding described hypotenuse place of described lamp socket, the corresponding side at described right-angle triangle one straight flange place of described lamp socket and the sidewall of described backlight cavity are fitted fixing, and the side described lamp socket being provided with described single lamp is towards described reflector plate direction, and be that acute angles beta is arranged with described reflector plate.
5. backlight assembly as claimed in claim 3, it is characterized in that, the sidewall of described backlight cavity comprises and the vertically disposed body of described base plate and the installation portion that extended to described opening direction by described body, and the inside surface of this installation portion is that inclined-plane is arranged, to form described installed surface.
6. the backlight assembly as described in claim 3 or 4, is characterized in that, described β is more than or equal to 60 degree and is less than or equal to 80 degree.
7. backlight assembly as claimed in claim 1, it is characterized in that, described single lamp is lens.
8. backlight assembly as claimed in claim 1, it is characterized in that, described reflector plate is covered with described base plate.
9. backlight assembly as claimed in claim 1, it is characterized in that, described backlight assembly also comprises diffusion sheet and blooming piece, and described diffusion sheet is located on the opening of described backlight cavity, and described blooming piece is located at the side of described diffusion sheet described opening dorsad.
10. a liquid crystal display, is characterized in that, described liquid crystal display comprises the backlight assembly as described in any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420436542.9U CN204086757U (en) | 2014-08-04 | 2014-08-04 | Backlight assembly and liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420436542.9U CN204086757U (en) | 2014-08-04 | 2014-08-04 | Backlight assembly and liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204086757U true CN204086757U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420436542.9U Expired - Fee Related CN204086757U (en) | 2014-08-04 | 2014-08-04 | Backlight assembly and liquid crystal display |
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| Country | Link |
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| CN (1) | CN204086757U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559668A (en) * | 2017-08-21 | 2018-01-09 | 深圳创维－Rgb电子有限公司 | A kind of down straight aphototropism mode set and display device |
-
2014
- 2014-08-04 CN CN201420436542.9U patent/CN204086757U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559668A (en) * | 2017-08-21 | 2018-01-09 | 深圳创维－Rgb电子有限公司 | A kind of down straight aphototropism mode set and display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 |
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| CF01 | Termination of patent right due to non-payment of annual fee |