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CN202056691U - Backlight module of display and liquid crystal display - Google Patents

Backlight module of display and liquid crystal display Download PDF

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Publication number
CN202056691U
CN202056691U CN2011201722100U CN201120172210U CN202056691U CN 202056691 U CN202056691 U CN 202056691U CN 2011201722100 U CN2011201722100 U CN 2011201722100U CN 201120172210 U CN201120172210 U CN 201120172210U CN 202056691 U CN202056691 U CN 202056691U
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CN
China
Prior art keywords
backboard
lamp bar
backlight module
lgp
display backlight
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2011201722100U
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Chinese (zh)
Inventor
邓毅
王伯长
布占场
金�雄
华广胜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Original Assignee
Beijing BOE Optoelectronics Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beijing BOE Optoelectronics Technology Co Ltd filed Critical Beijing BOE Optoelectronics Technology Co Ltd
Priority to CN2011201722100U priority Critical patent/CN202056691U/en
Application granted granted Critical
Publication of CN202056691U publication Critical patent/CN202056691U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses a backlight module of a display, which is used for realizing local dimming better so as to upgrade the dynamic contrast of a liquid crystal display better, improve the image quality of the liquid crystal display and reduce the power consumption. The backlight module of the display comprises at least two light strips, a light guide plate and a back panel, wherein at least one light strip is attached to the side face of the back panel; at least one light strip is attached to the bottom surface of the back panel for providing a light source for the light guide plate; the light guide plate is connected with the back panel for receiving light emitted by the light strip to display an image on the display; and the back panel is used for supporting the light strips and the light guide plate. The utility model also discloses the liquid crystal display.

Description

A kind of display backlight module and LCD
Technical field
The utility model relates to mechanical field, particularly a kind of display backlight module and LCD.
Background technology
LCD (LCD) is made of LCD panel and backlight usually.The LCD panel comes display image by the rotation or the deflection angle of control liquid crystal, and backlight is responsible for providing light source to the LCD panel, for the display frame of LCD panel.
Local dimming (Local dimming) technology is meant the technology that backlight is adjusted along with the brightness in various degree of the bright degree do of the difference of LCD panel display frame in the corresponding region.The local dimming The Application of Technology can make LCD improve dynamic contrast, promotes image quality, reduces power consumption.The local dimming technology is broadly divided into 3 big classes, be respectively 0 dimension (0D), 1 dimension (1D), 2 dimensions (2D) light modulation, its pairing light source is respectively planar light source FFL (dielectric barrier discharge flat florescent lamp), CCFL (cold cathode fluorescent lamp pipe), LED (light emitting diode).More than in three kinds of methods, planar light source can only monoblock open or close owing to it, therefore can't realize local dimming, second method is owing to the restriction (in 32 cun LCD TV, its CCFL quantity only is 8) that is subjected to CCFL quantity in the backlight, though it can realize local dimming, but can not realize the light modulation in the smaller area territory, therefore limited to the effect of image quality lifting, and the CCFL response time is slower, and switch can influence the life-span of CCFL greatly fast.And best results surely belong to the third method, i.e. 2D local dimming.
Use LED to realize that the method for local dimming generally is divided into two kinds again, a kind of for around backlight, placing the side-light type back light of led light source, brightness by light source drive system control relevant range LED realizes local dimming, but the drive circuit of the method difficulty designs, and also can't realize the light modulation in the smaller area territory.Another kind method is the direct LED backlight design, and LED arranges with matrix form and is covered with bottom, entire backlight source, can use white light LEDs, also can use red, green, blue LED, reaches the purpose of high colour gamut.The local dimming of the method is comparatively remarkable to the lifting effect of LCD image quality, but the LED quantity more (need use 1500 plurality of LEDs) that the method is used as 46 cun LCD TVs, and cost is higher, and heating effect is more obvious.
The utility model content
The utility model embodiment provides a kind of display backlight module and LCD, is used for realizing preferably local dimming, to promote the dynamic contrast of LCD better, improves its image quality, and reduces power consumption.
A kind of display backlight module comprises: at least two lamp bars (101), spliced LGP (102) and backboard (103);
Described lamp bar (101) is attached at splicing place of the above LGP of backboard (103) (102), and being used for provides light source to described LGP (102);
Described LGP (102) is fixedlyed connected with described backboard (103), and the light that is used to make the described lamp bar (101) of reception to send becomes area source equably;
Described backboard (103) is used to support described lamp bar (101) and described LGP (102).
A kind of LCD comprises described display backlight module.
The display backlight module comprises among the utility model embodiment: at least two lamp bars, spliced LGP and backboard; Described lamp bar 101 is attached at splicing place of backboard 103 the above LGP 102, and being used for provides light source to described LGP; Described LGP 102 is fixedlyed connected with described backboard 103, and the light that is used to make the described lamp bar 101 of reception to send becomes area source equably; Described backboard is used to support described lamp bar and described LGP.The utility model embodiment is by the lamp bar being attached at simultaneously the bottom surface and the side of backboard, and is higher to the utilization rate of light, side entering type and straight-down negative combination, fixing fairly simple for the lamp bar is convenient to the layout of lamp bar, simultaneously because the lamp bar directly contacts with backboard, and heat sink strip is arranged, be beneficial to heat radiation.By being equipped with of a plurality of lamp bars and LGP, more convenient Region control reaches the effect of dynamic backlight.And can determine the quantity of lamp bar as required, help energy savings, reduce power consumption.
Description of drawings
Fig. 1 is the detailed structure view of display backlight module among the utility model embodiment;
Fig. 2 is the enlarged diagram of display backlight module backboard side among the utility model embodiment;
Fig. 3 is the subregion schematic diagram of display backlight module backboard side and bottom surface among the utility model embodiment;
Fig. 4 is the schematic diagram of display backlight module among the utility model embodiment.
The specific embodiment
The display backlight module comprises among the utility model embodiment: at least two lamp bars, spliced LGP and backboard; Described lamp bar 101 is attached at splicing place of backboard 103 the above LGP 102, and being used for provides light source to described LGP; Described LGP 102 is fixedlyed connected with described backboard 103, and the light that is used to make the described lamp bar 101 of reception to send becomes area source equably; Described backboard is used to support described lamp bar and described LGP.The utility model embodiment is by the lamp bar being attached at simultaneously the bottom surface and the side of backboard, and is higher to the utilization rate of light, side entering type and straight-down negative combination, fixing fairly simple for the lamp bar is convenient to the layout of lamp bar, simultaneously because the lamp bar directly contacts with backboard, and heat sink strip is arranged, be beneficial to heat radiation.By being equipped with of a plurality of lamp bars and LGP, more convenient Region control reaches the effect of dynamic backlight.And can determine the quantity of lamp bar as required, help energy savings, reduce power consumption.
Referring to Fig. 1, the display backlight module comprises lamp bar 101, spliced LGP 102 and backboard 103 among the utility model embodiment.Can comprise many lamp bars 101 in the display backlight module, lamp bar 101 can be attached at the side and the bottom surface of backboard 103 respectively.At least one lamp bar 101 is attached at the side of backboard 103, and at least one lamp bar 101 is attached at the bottom surface of backboard 103.LGP 102 and backboard 103 are fixedly linked.Can comprise a plurality of LGPs 102 in the display backlight module.
The display backlight module also comprises reinforcement 104, reflectance coating 105, reflector plate 106 and blooming 107 among Fig. 1.Bottom surface at backboard 103 offers groove, is provided with reinforcement 104 in this groove.
Reflectance coating 105 is covered on LGP 102 near on backboard 103 bottom surfaces and the right angle face parallel with backboard 103 bottom surfaces.And in the groove of backboard 103 bottom surfaces and the outer zone of groove also can be pasted with reflectance coating 105 be reflected the utilization rate of raising light fully so that be attached at the luminous energy that the lamp bar 101 in the groove sends.When lamp bar 101 was attached at the side of backboard 103, LGP 102 was provided with described reflectance coating 105 near backboard 103 bottom surfaces and the right angle face parallel with described backboard 103 bottom surfaces, and its principle of reflection can be diffuse reflection.
Reflector plate 106 is fixed in the groove top that inside is provided with reinforcement 104, promptly is attached on the on-right angle face of LGP 102.When lamp bar 101 was attached at the bottom surface of backboard 103, reflector plate 106 was attached on the on-right angle face of LGP 102, was 45 with the bottom surface of backboard 103, and promptly the bottom surface of the on-right angle face of LGP 102 and backboard 103 is 45.
Preferable, when two sides of backboard 103 all were pasted with lamp bar 101, reflector plate 106 planes and backboard 103 bottom surfaces were 45; When backboard 103 had only a side to be pasted with lamp bar 101, the forward of reflector plate 103 planes and backboard 103 bottom surfaces was 45, and as shown in fig. 1, the forward of these backboard 103 bottom surfaces can be the directions of backboard 103 bottom surfaces away from the side that is pasted with lamp bar 101.Reflector plate 106 is used for the light that reflectoscope bar 101 sends.It can comprise two reflectings surface, upper surface, and promptly first reflecting surface is by common reflectance coating manufacturing, and principle of reflection can be diffuse reflection, the light that energy usable reflection side light bar 101 sends; Lower surface, promptly second reflecting surface can be aluminium foil or other reflective material manufacturing, and principle of reflection can be the minute surface reflection, and the luminous energy that bottom surface lamp bar 101 is sent reflects the plane of incidence that enters the right LGP 102 to greatest extent.。Wherein, first reflecting surface is the A face among Fig. 1, promptly near the reflecting surface (in other words away from the reflecting surface that is arranged at the lamp bar 101 on the reinforcement 104) of blooming 107, second reflecting surface is the B face among Fig. 1, promptly away from the reflecting surface of blooming 107 (in other words near the reflecting surface that is arranged at the lamp bar 101 on the reinforcement 104).
Blooming 107 under the support of backboard 103 with LGP 102 parallel placements.
Lamp bar 101 is used for providing light source to LGP 102.Figure 1 illustrates 101, sides that are attached at backboard 103 of two lamp bars, be illustrated in figure 2 as the enlarged diagram of the utility model embodiment dorsulum 103 sides.Another root is attached at the bottom surface of backboard 103, is illustrated in figure 3 as the subregion schematic diagram of the utility model embodiment dorsulum 103 sides and bottom surface.These two lamp bars 101 are parallel to each other.Lamp bar 101 can attach by heat-conducting glue.Preferable, the lamp bar 101 that is attached at backboard 103 bottom surfaces can be attached on the reinforcement 104, thereby makes three of lamp bar 101 all to be surrounded by backboard 103, is convenient to 101 heat conduction of lamp bar.And with respect to directly being attached at lamp bar 101 on the backboard 103, can reduce the thickness of display backlight module like this.Be attached at the lamp bar 101 of backboard 103 sides, its light that sends can directly enter LGP 102, perhaps can enter LGP 102 by the reflection of reflectance coating 105, and is higher to the utilization rate of light; Be attached at the lamp bar 101 of backboard 103 bottom surfaces, its light that sends can be through entering LGP 102 after the reflection.
As shown in fig. 1, be attached on the reinforcement 104, promptly be attached at the lamp bar 101 of backboard 103 bottom surfaces when luminous, its light that sends arrives reflectance coating 105 through the minute surface reflection back of the B face of reflector plate 106, arrives the LGP 102 on its right again by the reflection of reflectance coating 105.Thereby each zone that makes the display backlight module all has the light of light source to arrive.The quantity of lamp bar 101 can be determined as required.The lamp bar 101 that uses is many more, and then the effect of local dimming is good more, can realize the light modulation than the zonule, and dynamic effect is good more.But the lamp bar 101 that uses is many more, also can corresponding increase cost and power consumption.
Wherein, a side of backboard 103 can only attach a lamp bar 101, and the inside that also can attach 101, one reinforcements 104 of many lamp bars can only attach a lamp bar 101, also can attach many lamp bars 101, can determine as required.For example, Figure 4 shows that a display backlight module schematic diagram, is example to attach 14 lamp bars 101 in this display backlight module, and a side of backboard 103 is pasted with in 101, one reinforcements 104 of two lamp bars and is pasted with two lamp bars 101.Wherein, the two lamp bars 101 that are attached at the same side of backboard 103 link to each other, and run through LGP 102, and the two lamp bars 101 that are attached on the reinforcement 104 link to each other, and run through LGP 102.Every lamp bar 101 can be driven by an inverter (inverted rectifier), and it is better therefore to drive effect.
Lamp bar 101 can be a LED lamp bar 101, also can be the lamp bar 101 of other type.A display backlight module comprises at least two lamp bars 101 among the utility model embodiment.
The light that LGP 102 is used to make the lamp bar 101 of reception to send becomes area source equably.The cross section of LGP 102 can be right-angled trapezium.
Backboard 103 is used to support lamp bar 101 and LGP 102.Backboard 103 also is used for supporting rib stiffener 104, reflectance coating 105, reflector plate 106 and blooming 107.
The utility model embodiment also provides a kind of LCD, and it comprises described display backlight module.
The display backlight module comprises among the utility model embodiment: at least two lamp bars 101, spliced LGP 102 and backboard 103; Described lamp bar 101 is attached at splicing place of backboard 103 the above LGP 102, and being used for provides light source to described LGP 102; Described LGP 102 is fixedlyed connected with described backboard 103, and the light that is used to make the described lamp bar 101 of reception to send becomes area source equably; Described backboard 103 be used to support described lamp bar 101 and shown in LGP 102.The utility model embodiment is by lamp bar 101 being attached at simultaneously the bottom surface and the side of backboard 103, and is higher to the utilization rate of light, and can determine the quantity of lamp bar 101 as required, helps energy savings, reduces power consumption.Side entering type and straight-down negative combination, fixing fairly simple for lamp bar 101 is convenient to the layout of lamp bar 101, simultaneously because lamp bar 101 directly contacts with backboard 103, and heat sink strip arranged, and is beneficial to heat radiation.By being equipped with of a plurality of lamp bars 101 and LGP 102, more convenient Region control reaches the effect of dynamic backlight.And the lamp bar that is attached at backboard 103 bottom surfaces can be attached on the reinforcement 104, with respect to directly being attached to lamp bar 101 on backboard 103 bottom surfaces, can reduce the thickness of display backlight module, and all surrounded by backboard 103 in 101 3 weeks of lamp bar, heat-conducting effect is obvious.The utility model embodiment also provides a kind of LCD that comprises described display backlight module.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.

Claims (11)

1. a display backlight module is characterized in that, comprising: at least two lamp bars (101), spliced LGP (102) and backboard (103);
Described lamp bar (101) is attached at splicing place of the above LGP of backboard (103) (102), and being used for provides light source to described LGP (102);
Described LGP (102) is fixedlyed connected with described backboard (103), and the light that is used to make the described lamp bar (101) of reception to send becomes area source equably;
Described backboard (103) is used to support described lamp bar (101) and described LGP (102).
2. display backlight module as claimed in claim 1 is characterized in that, the cross section of described LGP (102) is a right-angled trapezium.
3. display backlight module as claimed in claim 2 is characterized in that, also comprises: reflectance coating (105) and reflector plate (106);
When described lamp bar (101) is attached at the side of described backboard (103), described LGP (102) is provided with described reflectance coating (105) near backboard (103) bottom surface and the right angle face parallel with described backboard (103) bottom surface, and its principle of reflection is diffuse reflection;
When described lamp bar (101) is attached at the bottom surface of described backboard (103), be pasted with described reflector plate (106) on the on-right angle face of described LGP (102), described reflector plate (106) is 45 with described backboard (103) bottom surface.
4. display backlight module as claimed in claim 3, it is characterized in that, described reflector plate (106) comprises first reflecting surface and second reflecting surface, described first reflecting surface is away from the reflecting surface that is arranged at the described lamp bar (101) on the described reinforcement (104), its principle of reflection is diffuse reflection, described second reflecting surface is the close reflecting surface that is arranged at the described lamp bar (101) on the described reinforcement (104), and its principle of reflection is the minute surface reflection.
5. display backlight module as claimed in claim 4 is characterized in that, the manufactured materials of described second reflecting surface is an aluminium foil.
6. display backlight module as claimed in claim 1 is characterized in that, at least one lamp bar (101) is attached at the side of described backboard (103), and at least one lamp bar (101) is attached at the bottom surface of described backboard (103).
7. display backlight module as claimed in claim 6 is characterized in that, described at least two lamp bars (101) are attached on the side and described reinforcement (104) of described backboard (103) by heat-conducting glue.
8. display backlight module as claimed in claim 1 is characterized in that, also comprises: reinforcement (104) is positioned at the groove of described backboard (103) bottom surface;
The described lamp bar (101) that is attached at described backboard (103) bottom surface is arranged on the described reinforcement (104).
9. display backlight module as claimed in claim 8 is characterized in that, only attaches a lamp bar (101) on the described reinforcement (104), or attaches many lamp bars (101).
10. display backlight module as claimed in claim 1 is characterized in that, a side of described backboard (103) only attaches a lamp bar (101), or attaches many lamp bars (101).
11. a LCD is characterized in that, comprises any described display backlight module as claim 1-10.
CN2011201722100U 2011-05-26 2011-05-26 Backlight module of display and liquid crystal display Expired - Lifetime CN202056691U (en)

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Application Number Priority Date Filing Date Title
CN2011201722100U CN202056691U (en) 2011-05-26 2011-05-26 Backlight module of display and liquid crystal display

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Application Number Priority Date Filing Date Title
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013075368A1 (en) * 2011-11-23 2013-05-30 深圳市华星光电技术有限公司 Backlight module and liquid crystal display device
WO2013149406A1 (en) * 2012-04-05 2013-10-10 深圳市华星光电技术有限公司 Backlight module and liquid crystal display device
CN103415105A (en) * 2013-07-02 2013-11-27 深圳Tcl新技术有限公司 Backlight units, display backlight compensation method, and display
CN103759175A (en) * 2014-01-21 2014-04-30 北京京东方显示技术有限公司 Backlight and display device
US9007547B2 (en) 2011-11-23 2015-04-14 Shenzhen China Star Optoelectronics Technology Co., Ltd. Backlight module and LCD device
CN105987299A (en) * 2015-01-19 2016-10-05 苏州欧普照明有限公司 Lighting device
WO2020000841A1 (en) * 2018-06-29 2020-01-02 惠科股份有限公司 Backlight module and display panel
CN110764313A (en) * 2019-11-29 2020-02-07 维沃移动通信有限公司 Backlight module, control method thereof, electronic device and computer readable storage medium
TWI702427B (en) * 2019-12-12 2020-08-21 台灣愛司帝科技股份有限公司 Image display and backlight module thereof
CN111736389A (en) * 2020-06-24 2020-10-02 安徽康佳电子有限公司 Light-controllable side-entering backlight capable of being partitioned
CN113835254A (en) * 2021-09-18 2021-12-24 威海台基慧显光电有限公司 A liquid crystal module structure compatible with direct type backlight and edge type backlight

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013075368A1 (en) * 2011-11-23 2013-05-30 深圳市华星光电技术有限公司 Backlight module and liquid crystal display device
US9007547B2 (en) 2011-11-23 2015-04-14 Shenzhen China Star Optoelectronics Technology Co., Ltd. Backlight module and LCD device
WO2013149406A1 (en) * 2012-04-05 2013-10-10 深圳市华星光电技术有限公司 Backlight module and liquid crystal display device
CN103415105B (en) * 2013-07-02 2016-05-11 深圳Tcl新技术有限公司 Method and the display in backlight module, compensation display backlight source
CN103415105A (en) * 2013-07-02 2013-11-27 深圳Tcl新技术有限公司 Backlight units, display backlight compensation method, and display
CN103759175A (en) * 2014-01-21 2014-04-30 北京京东方显示技术有限公司 Backlight and display device
CN103759175B (en) * 2014-01-21 2016-03-30 北京京东方显示技术有限公司 A kind of backlight and display device
CN105987299A (en) * 2015-01-19 2016-10-05 苏州欧普照明有限公司 Lighting device
CN105987299B (en) * 2015-01-19 2020-01-07 苏州欧普照明有限公司 Lighting device
WO2020000841A1 (en) * 2018-06-29 2020-01-02 惠科股份有限公司 Backlight module and display panel
CN110764313A (en) * 2019-11-29 2020-02-07 维沃移动通信有限公司 Backlight module, control method thereof, electronic device and computer readable storage medium
TWI702427B (en) * 2019-12-12 2020-08-21 台灣愛司帝科技股份有限公司 Image display and backlight module thereof
CN111736389A (en) * 2020-06-24 2020-10-02 安徽康佳电子有限公司 Light-controllable side-entering backlight capable of being partitioned
CN113835254A (en) * 2021-09-18 2021-12-24 威海台基慧显光电有限公司 A liquid crystal module structure compatible with direct type backlight and edge type backlight

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ASS Succession or assignment of patent right

Owner name: JINGDONGFANG SCIENCE AND TECHNOLOGY GROUP CO., LTD

Free format text: FORMER OWNER: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY CO., LTD.

Effective date: 20150707

Owner name: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY

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Effective date of registration: 20150707

Address after: 100015 Jiuxianqiao Road, Beijing, No. 10, No.

Patentee after: BOE Technology Group Co., Ltd.

Patentee after: Beijing BOE Photoelectricity Science & Technology Co., Ltd.

Address before: 100176 Beijing city in Western Daxing District economic and Technological Development Zone, Road No. 8

Patentee before: Beijing BOE Photoelectricity Science & Technology Co., Ltd.

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20111130