CN203744019U - Backlight source, backlight module and display device - Google Patents
Backlight source, backlight module and display device Download PDFInfo
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- CN203744019U CN203744019U CN201420074322.6U CN201420074322U CN203744019U CN 203744019 U CN203744019 U CN 203744019U CN 201420074322 U CN201420074322 U CN 201420074322U CN 203744019 U CN203744019 U CN 203744019U
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- lgp
- backlight
- light source
- emitting diode
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Abstract
The embodiment of the utility model discloses a backlight source, a backlight module and a display device and relates to the technical field of display. The picture uniformity of the display device can be improved. The backlight source comprises a lateral incidence type light source located on one side of the first side face of a light guide plate. The backlight source further comprises a straightly downward light source located on one side of the back face of the light guide plate and close to the high beam end.
Description
Technical field
The utility model relates to Display Technique field, relates in particular to a kind of backlight, backlight module and display unit.
Background technology
Liquid crystal display comprises backlight module and display floater, and backlight module provides light for display floater.Backlight module is divided into down straight aphototropism mode set and side entrance back module.Wherein, the cost of side entrance back module is lower, applies comparatively extensive.
Further, side entrance back module comprises the structures such as side entering type light source and LGP, and for convenience of description, definition LGP be front near the one side of display floater, away from the one side of display floater, is the back side, the side that other faces are LGP.Wherein, side entering type light source is positioned at a side of a side of LGP, and the light that side entering type light source is launched is injected from this side, then from the front of LGP, penetrates, and then arrives display floater.
Inventor finds, continuous increase along with the size of backlight module, the size of LGP is corresponding increase also, and then make light that side entering type light source is launched cannot pass to uniformly the distance light end (LGP is away from one end of side entering type light source) of LGP, the brightness of viewing area that makes to be positioned in display unit distance light end one side is lower, causes the picture homogeneous degree of display unit poor.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of backlight, backlight module and display unit, can improve the picture homogeneous degree of display unit.
For solving the problems of the technologies described above, the utility model provides a kind of backlight, and this backlight adopts following technical scheme:
A backlight, comprises and it is characterized in that the side entering type light source of the first side one side that is positioned at LGP, and described backlight also comprises and is positioned at the back side one side of described LGP near the directly-down light source of distance light end.
The cross section of described LGP is rectangle, described LGP also comprises the second side, the 3rd side and the 4th side, wherein, described the first side and described the second side are oppositely arranged, described the 3rd side and described the 4th side are oppositely arranged, the upright projection of described directly-down light source on described LGP and the vertical range d=1/9*L between described the second side, wherein, L is the vertical range between described the first side and described the second side.
Described directly-down light source is by the first light emitting diode, the second light emitting diode and the 3rd light emitting diode form, the upright projection of described the first light emitting diode on described LGP and the vertical range d1=1/9*H between described the 3rd side, the upright projection of described the second light emitting diode on described LGP and the vertical range d2=1/2*H between described the 3rd side, the upright projection of described the 3rd light emitting diode on described LGP and the vertical range d3=8/9*H between described the 3rd side, wherein, H is the vertical range between described the 3rd side and described the 4th side.
Described backlight also comprises light intensity regulating structure, and described light intensity regulating structure is for regulating the light intensity of described side entering type light source and described directly-down light source.
Described light intensity regulating structure comprises that the first adjusting part and second regulates part, and described first regulates part for regulating the light intensity of described side entering type light source, and described second regulates part for regulating the light intensity of described directly-down light source.
The utility model embodiment provides a kind of backlight, because this backlight comprises the side entering type light source of the first side one side that is positioned at LGP, also comprise and be positioned at the back side one side of LGP near the directly-down light source of distance light end, therefore, directly-down light source can improve the brightness that is positioned at the viewing area of distance light end one side in display unit, and then improve the lower phenomenon of brightness of the viewing area that is positioned at distance light end one side of display unit while only having side entering type light source, improved the picture homogeneous degree of display unit.
In order further to solve the problems of the technologies described above, the utility model also provides a kind of backlight module, and this backlight module adopts following technical scheme:
A backlight module, comprises LGP, and described backlight module also comprises the backlight described in above any one.
Described backlight module also comprises the backboard of the back side one side that is positioned at described LGP, and described directly-down light source is positioned on described backboard.
The utility model embodiment provides a kind of backlight module, because this backlight module comprises the backlight with said structure, therefore, it is more even that this backlight module offers the light of display floater, and then can effectively improve the lower phenomenon of brightness of the viewing area that is positioned at distance light end one side of display unit while only having side entering type light source, improved the picture homogeneous degree of display unit.
The utility model also provides a kind of display unit, and this display unit comprises the backlight module described in above any one.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is backlight in the utility model embodiment and the side view of LGP;
Fig. 2 is backlight in the utility model embodiment and the top view one of LGP;
Fig. 3 is the test point schematic diagram in the display unit in the utility model embodiment;
Fig. 4 is backlight in the utility model embodiment and the top view two of LGP;
Fig. 5 is the schematic diagram of the backlight module in the utility model embodiment.
Description of reference numerals:
1-LGP; The 11-the first side; The 12-the second side;
The 13-the three side; The 14-the four side; 15-back side;
2-side entering type light source; 3-directly-down light source; The 31-the first light emitting diode;
The 32-the second light emitting diode; The 33-the three light emitting diode; 4-test point;
5-light intensity regulating structure; 51-the first regulates part; 52-the second regulates part;
6-backboard.
The specific embodiment
Embodiment mono-
The utility model embodiment provides a kind of backlight, as depicted in figs. 1 and 2, this backlight comprises the side entering type light source 2 of the first side 11 1 sides that are positioned at LGP 1, and backlight also comprises and is positioned at the back side 15 1 sides of LGP 1 near the directly-down light source 3 of distance light end.
Further, in the utility model embodiment, side entering type light source 2 and directly-down light source 3 can be selected according to actual conditions for various structures such as light emitting diode, lamp bar and cold-cathode fluorescence lamps, and the utility model embodiment does not limit this.
The utility model embodiment provides a kind of backlight, because this backlight comprises the side entering type light source of the first side one side that is positioned at LGP, also comprise and be positioned at the back side one side of LGP near the directly-down light source of distance light end, therefore, directly-down light source can improve the brightness that is positioned at the viewing area of distance light end one side in display unit, and then improve the lower phenomenon of brightness of the viewing area that is positioned at distance light end one side of display unit while only having side entering type light source, improved the picture homogeneous degree of display unit.
Further, test process for the picture homogeneous degree of display unit is as follows: the picture brightness of test 9 test points 4 as shown in Figure 3, then calculate respectively the ratio of the brightness of 8 test points 4 around and the brightness of central test point, by the picture homogeneous degree of this ratio calculation display unit.For convenience of description, definition is laterally x direction as shown in Figure 3, be longitudinally y direction, and the length of display unit and the wide unit coordinate that is respectively x direction and y direction, the coordinate of 9 test points 4 is respectively (1/9, 1/9), (1/9, 1/2), (1/9, 8/9), (1/2, 1/9), (1/2, 1/2), (1/2, 8/9), (8/9, 1/9), (8/9, 1/2), (8/9, 8/9), wherein 6 test points 4 in left side are comparatively near side entering type light source 2, brightness is higher, therefore for cost-saving, only need to make 3 test points 4 on the light covering right side of directly-down light source 3 transmittings.Preferably, as shown in Figure 4, the cross section of LGP 1 is rectangle, LGP 1 also comprises the second side 12, the 3rd side 13 and the 4th side 14, and wherein, the first side 11 and the second side 12 are oppositely arranged, the 3rd side 13 and the 4th side 14 are oppositely arranged, the upright projection of directly-down light source 3 on LGP 1 and the vertical range d=1/9*L between the second side 12, wherein, L is the vertical range between the first side 11 and the second side 12.
Further preferably, as shown in Figure 2, directly-down light source 3 is by the first light emitting diode 31, the second light emitting diode 32 and the 3rd light emitting diode 33 form, the upright projection of the first light emitting diode 31 on LGP 1 and the vertical range d1=1/9*H between the 3rd side 13, the upright projection of the second light emitting diode 32 on LGP 1 and the vertical range d2=1/2*H between the 3rd side 13, the upright projection of the 3rd light emitting diode 33 on LGP 1 and the vertical range d3=8/9*H between the 3rd side 13, wherein, H is the vertical range between the 3rd side 13 and the 4th side 14.Now, only need to use 3 light emitting diodes, and then can be further cost-saving, can reach again best test effect simultaneously.
Further, as shown in Figure 1, above-mentioned backlight also comprises light intensity regulating structure 5, and light intensity regulating structure 4 is for regulating the light intensity of side entering type light source 2 and directly-down light source 3.In order to meet the different requirements of different display unit to picture homogeneous degree, preferably, light intensity regulating structure 5 comprises that the first adjusting part 51 and second regulates part 52, first regulates part 51 for regulating the light intensity of side entering type light source 2, and second regulates part 52 for regulating the light intensity of directly-down light source 3.
Embodiment bis-
The utility model embodiment also provides a kind of backlight module, as shown in Figure 5, this backlight module comprises LGP 1, this backlight module also comprises backlight, backlight comprises the side entering type light source 2 of the first side 11 1 sides that are positioned at LGP 1, and backlight also comprises and is positioned at the back side 15 1 sides of LGP 1 near the directly-down light source 3 of distance light end.
Further, the cross section of LGP 1 is rectangle, LGP 1 also comprises the second side 12, the 3rd side 13 and the 4th side 14, wherein, the first side 11 and the second side 12 are oppositely arranged, and the 3rd side 13 and the 4th side 14 are oppositely arranged, the upright projection of directly-down light source 3 on LGP 1 and the vertical range d=1/9*L between the second side 12, wherein, L is the vertical range between the first side 11 and the second side 12.
Further, directly-down light source 3 is comprised of the first light emitting diode 31, the second light emitting diode 32 and the 3rd light emitting diode 33, the upright projection of the first light emitting diode 31 on LGP 1 and the vertical range d1=1/9*H between the 3rd side 13, the upright projection of the second light emitting diode 32 on LGP 1 and the vertical range d2=1/2*H between the 3rd side 13, the upright projection of the 3rd light emitting diode 33 on LGP 1 and the vertical range d3=8/9*H between the 3rd side 13, wherein, H is the vertical range between the 3rd side 13 and the 4th side 14.
Further, backlight also comprises light intensity regulating structure 5, and light intensity regulating structure 5 is for regulating the light intensity of side entering type light source 2 and directly-down light source 3.
Light intensity regulating structure 5 comprises that the first adjusting part 51 and second regulates part 52, the first to regulate part 51 for regulating the light intensity of side entering type light source 2, and second regulates part 52 for regulating the light intensity of directly-down light source 3.
In addition,, for more applicable light is provided to display floater, backlight module can also comprise the structures such as reflector plate and prismatic lens.Wherein, reflector plate can be arranged at LGP 1 away from display floater one side, and reflector plate returns in LGP 1 for the light reflection that the back side from LGP 1 15 is penetrated, and realizes making full use of of light.Prismatic lens can be positioned at LGP 1 near display floater one side, and prismatic lens is for light is converged in an angular range, thus the axial brightness of raising display unit.
It should be noted that, the position of reflector plate and prismatic lens also can regulate according to actual conditions, in addition, for the ease of fixing of directly-down light source 3 and other structures, as shown in Figure 5, backlight module in the utility model embodiment also comprises the backboard 6 of the back side 15 1 sides that are positioned at LGP 1, and directly-down light source 3 is positioned on backboard 6.
In addition, backlight module can also comprise that other are in order to light regulating or other structures in order to fix, and the utility model embodiment does not repeat one by one at this.
The utility model embodiment provides a kind of backlight module, because this backlight module comprises the backlight with said structure, therefore, it is more even that this backlight module offers the light of display floater, and then can effectively improve the lower phenomenon of brightness of the viewing area that is positioned at distance light end one side of display unit while only having side entering type light source, improved the picture homogeneous degree of display unit.
The utility model embodiment also provides a kind of display unit, and this display unit comprises above-described backlight module.Described display unit can be: any product or parts with Presentation Function such as liquid crystal panel, Electronic Paper, oled panel, mobile phone, panel computer, television set, display, notebook computer, DPF, navigator.
The above; it is only the specific embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.
Claims (8)
1. a backlight, comprises and it is characterized in that the side entering type light source of the first side one side that is positioned at LGP, and described backlight also comprises and is positioned at the back side one side of described LGP near the directly-down light source of distance light end.
2. backlight according to claim 1, it is characterized in that, the cross section of described LGP is rectangle, described LGP also comprises the second side, the 3rd side and the 4th side, wherein, described the first side and described the second side are oppositely arranged, described the 3rd side and described the 4th side are oppositely arranged, the upright projection of described directly-down light source on described LGP and the vertical range d=1/9*L between described the second side, wherein, L is the vertical range between described the first side and described the second side.
3. backlight according to claim 2, it is characterized in that, described directly-down light source is by the first light emitting diode, the second light emitting diode and the 3rd light emitting diode form, the upright projection of described the first light emitting diode on described LGP and the vertical range d1=1/9*H between described the 3rd side, the upright projection of described the second light emitting diode on described LGP and the vertical range d2=1/2*H between described the 3rd side, the upright projection of described the 3rd light emitting diode on described LGP and the vertical range d3=8/9*H between described the 3rd side, wherein, H is the vertical range between described the 3rd side and described the 4th side.
4. according to the backlight described in claim 1-3 any one, it is characterized in that, also comprise light intensity regulating structure, described light intensity regulating structure is for regulating the light intensity of described side entering type light source and described directly-down light source.
5. backlight according to claim 4, it is characterized in that, described light intensity regulating structure comprises that the first adjusting part and second regulates part, and described first regulates part for regulating the light intensity of described side entering type light source, and described second regulates part for regulating the light intensity of described directly-down light source.
6. a backlight module, comprises LGP, it is characterized in that, described backlight module also comprises the backlight as described in claim 1-5 any one.
7. backlight module according to claim 6, is characterized in that, also comprises the backboard of the back side one side that is positioned at described LGP, and described directly-down light source is positioned on described backboard.
8. a display unit, is characterized in that, comprises the backlight module as described in claim 6 or 7 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420074322.6U CN203744019U (en) | 2014-02-20 | 2014-02-20 | Backlight source, backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420074322.6U CN203744019U (en) | 2014-02-20 | 2014-02-20 | Backlight source, backlight module and display device |
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| Publication Number | Publication Date |
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| CN203744019U true CN203744019U (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420074322.6U Expired - Fee Related CN203744019U (en) | 2014-02-20 | 2014-02-20 | Backlight source, backlight module and display device |
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| Country | Link |
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| CN (1) | CN203744019U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017206290A1 (en) * | 2016-06-03 | 2017-12-07 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN108957606A (en) * | 2018-07-05 | 2018-12-07 | 深圳创维－Rgb电子有限公司 | A kind of design method and compound film sheet of compound film sheet |
| CN110488531A (en) * | 2018-05-15 | 2019-11-22 | 青岛海信电器股份有限公司 | A kind of backlight module and liquid crystal display device |
-
2014
- 2014-02-20 CN CN201420074322.6U patent/CN203744019U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017206290A1 (en) * | 2016-06-03 | 2017-12-07 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display |
| US10241255B2 (en) | 2016-06-03 | 2019-03-26 | Wuhan China Star Optoelectronics Technology Co., Ltd | Backlight module and liquid crystal display |
| CN110488531A (en) * | 2018-05-15 | 2019-11-22 | 青岛海信电器股份有限公司 | A kind of backlight module and liquid crystal display device |
| CN108957606A (en) * | 2018-07-05 | 2018-12-07 | 深圳创维－Rgb电子有限公司 | A kind of design method and compound film sheet of compound film sheet |
| CN108957606B (en) * | 2018-07-05 | 2021-03-30 | 深圳创维－Rgb电子有限公司 | Design method of composite diaphragm and composite diaphragm |
| US11947137B2 (en) | 2018-07-05 | 2024-04-02 | Shenzhen Skyworth-Rgb Electronic Co., Ltd | Method for composite membrane and composite membrane |
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| 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: 20140730 |
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| CF01 | Termination of patent right due to non-payment of annual fee |