CN102865516A - Backlight module and light-emitting diode (LED) display - Google Patents
Backlight module and light-emitting diode (LED) display Download PDFInfo
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- CN102865516A CN102865516A CN2012103722015A CN201210372201A CN102865516A CN 102865516 A CN102865516 A CN 102865516A CN 2012103722015 A CN2012103722015 A CN 2012103722015A CN 201210372201 A CN201210372201 A CN 201210372201A CN 102865516 A CN102865516 A CN 102865516A
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Abstract
The invention discloses a backlight module and a light-emitting diode (LED) display. The backlight module comprises a light source module with a luminous surface and a back panel, a reflecting piece and a light guide plate which are sequentially stacked, wherein one end of the light guide plate bends and extends to the back panel direction to form a bending part of which the outer surface is not transparent; an end face at the tail end of the bending part is a light entrance surface; and the light source module is fixed on the edge of the back panel, and the luminous surface of the light source module is opposite to the light entrance surface. According to the backlight module, because the light source module is positioned on the outer side of the back panel, the generated heat is directly dispersed outwards and is not collected inside the back panel; and therefore, the radiating efficiency is improved, and all problems caused by bad radiation of the backlight module in the traditional technology are solved; and meanwhile, the light source emitted from the light source module does not directly enter the side face of the light guide plate and enters the light entrance surface of the bending part, after the light is reflected and fully mixed inside the bending part, and the light source enters the backlight module; and therefore, the dark space inside the backlight module is eliminated, and the backlight effect is improved.
Description
Technical field
The present invention relates to the light-emitting diode display technical field, especially relate to a kind of backlight module and light-emitting diode display.
Background technology
The heat dissipation problem of LED-backlit module is perplexing the technical staff in the industry always, trace it to its cause, back plate edges in traditional backlight module all is provided with support plate usually, the light source module then is fixed on the support plate of backboard inboard, thereby cause the backlight module inner body to be arranged closely, narrow space, the heat that LED produces can't in time come out, therefore caused a lot of problems, as:
1, LED is under hot environment, and luminous efficiency reduces, lifetime.In the actual design, designer's have to deliberately reduce operating current of LED reducing the heat that the backlight module unit interval produces, thereby so that the LED system is not in the optimal drive state, has reduced luminous efficiency, has also improved the cost of backlight module system schema.
2, the blooming piece in the backlight module and LGP are at high temperature yielding, cause backlight module local shadow, bright dark uneven phenomenon to occur, and in addition, liquid crystal display at high temperature is prone to light leakage phenomena, affects viewing effect.
3, for solving heat dissipation problem, have to select cost higher aluminum backboard, thermal paste and heat-dissipating aluminium plate in the module design, some producers even adopt waterway cooling system or embed radiator fan in module internal, so just increase cost, and brought difficulty to structural design and backlight module lightness.
In addition, LED is some property illuminator, and its light source is the fan-shaped emission, and generally the luminous light intensity in its bosom is maximum, and when some LED were in line, the interval between LED and the LED will produce the dark space.And traditional backlight module, its led light source directly imports backlight module inside by the side of LGP, does not pass through abundant mixed light, therefore will produce the dark space in the light inlet side of backlight module.
Summary of the invention
Main purpose of the present invention is to provide a kind of backlight module and light-emitting diode display, is intended to improve the radiating efficiency of backlight module and the dark space in the elimination backlight module with lower cost.
To achieve these objectives, the present invention proposes a kind of backlight module, comprise the light source module with light-emitting area and backboard, reflector plate and the LGP that stacks successively, described LGP one end extends to form the lighttight kink of an outer surface toward the bending of backboard direction, described kink distal end faces is incidence surface, and described light source module is fixed in back plate edges and its light-emitting area and described incidence surface and is oppositely arranged.
Preferably, described kink outer surface is covered with retroreflective sheeting or is coated with reflecting coating.
Preferably, described light source module comprises LED substrate and a plurality of LED, and described LED substrate one end is fixed in described back plate edges, and the other end stretches out described backboard and is fixed with described a plurality of LED.
Preferably, described incidence surface is provided with the groove of a plurality of accommodating described LED.
Preferably, the bending angle of described kink is θ, and 90 °≤θ＜180 °.
Preferably, described backboard is provided with reinforcement near an end of light source module.
Preferably, described kink outer surface is curved.
The present invention proposes a kind of light-emitting diode display simultaneously, it comprises a backlight module, this backlight module comprises the light source module with light-emitting area and backboard, reflector plate and the LGP that stacks successively, described LGP one end extends to form the lighttight kink of an outer surface toward the bending of backboard direction, described kink distal end faces is incidence surface, and described light source module is fixed in back plate edges and its light-emitting area and described incidence surface and is oppositely arranged.
A kind of backlight module provided by the present invention, because the light source module is positioned at the backboard outside, be fixed in back plate edges, the heat of its generation directly spreads to the outside, can not gather in backboard inside, therefore improve radiating efficiency, thereby solved all problems that the backlight module in the conventional art causes because of poor heat radiation.Simultaneously, the light source that the light source module sends is not directly to enter from the side of LGP, but enters from the kink incidence surface, in kink internal reflection and abundant entry of backlight module internal again behind the mixed light, therefore eliminate the dark space in the backlight module, improved backlight effect.
Description of drawings
Fig. 1 is the partial exploded view of backlight module one preferred embodiment of the present invention;
Fig. 2 is the partial sectional view of backlight module one preferred embodiment of the present invention.
The realization of the object of the invention, functional characteristics and advantage are described further with reference to accompanying drawing in connection with embodiment.
The specific embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Referring to Fig. 1-backlight module of the present invention one preferred embodiment shown in Figure 2, described backlight module comprises the light source module 400 with light-emitting area and backboard 100, reflector plate 200 and the LGP 300 that stacks successively, described LGP 300 1 ends extend to form an outer surface 312 lighttight kinks 310 toward the bending of backboard 100 directions, kink 310 distal end faces are incidence surface 311, light source module 400 then is fixed in the backboard frontside edge, and its light-emitting area 411 is oppositely arranged with described incidence surface 311, in order to reduce the loss of light source, preferably fit tightly.Namely as shown in the figure, the incidence surface of light source module unlike prior art over against the LGP side, but towards the back side of LGP.Described kink 310 can arrange separately, then be fastened on LGP 300 sides, as preferably, kink 311 and the LGP 300 of the present embodiment are wholely set, more be conducive to the conduction of light source, and kink 310 is curved with the outer surface 312 that LGP 300 upper surfaces combine, and more is conducive to light source is all-trans inject LGP 300, and profile is also more attractive in appearance.Light source module 400 mainly comprises some LED410, LED410 can be directly fixed on the edge of backboard 100, and evenly distribute along the edge (this moment, backboard was preferably selected the better aluminium base of heat dispersion) places backboard 100 inboards more to be conducive to the diffusion of heat LED410 with respect to conventional art.As a kind of optimal way, the light source module 400 of the present embodiment also comprises a LED substrate 420, is generally the better aluminium base of heat dispersion, this LED substrate 420 is fixed in the edge of backboard 100.Concrete, LED substrate 420 1 ends are fixed in described backboard frontside edge, and the back side preferably, and the other end stretches out described backboard 100 and is fixed with a plurality of LED410, and these a plurality of LED410 vertically evenly distribute along LED substrate 420.
The light source that LED410 sends enters from the incidence surface 311 of kink 310, because kink 310 outer surfaces 312 are light tight, after 312 reflections of kink 310 outer surfaces, enter LGP 300, or be reflected back again LGP 300 behind the directive reflector plate 200, finally light whole backlight module.Because LED410 is positioned at backboard 100 outsides, it is directly fixed on the backboard frontside edge, perhaps be fixed in LED substrate 420 and do not contact with backboard 100, the heat of its generation directly spreads to the outside, can not gather in backboard 100 inside, therefore radiating efficiency is high, thereby solved all problems that the backlight module in the conventional art causes because of poor heat radiation, such as: because the LED410 rapid heat dissipation, just can not be too high and deliberately reduce its operating current for fear of its temperature, therefore can fully improve its luminous efficiency, reduce the backlight module cost; Can not gather in backlight module inside heat generation high temperature because radiating efficiency is high, the LGP 300 in the backlight module and blooming piece just can not produce distortion by Yin Gaowen, and liquid crystal display just light leakage phenomena can not occur, has therefore improved the backlight effect of backlight module; When LED410 is fixed in LED substrate 420 and is not fixed in backboard 100, backboard 100 just need not selected the higher aluminium sheet of cost, more need not to be collected in the heat in the backlight module and to increase waterway cooling system and radiator fan in order to distribute, therefore reduced cost, and more be conducive to liquid crystal display do thin do narrow.Simultaneously, led light source is not that direct side from LGP 300 enters, but through kink 310 reflections, after the led light source of dispersing enters kink 310 with different angles, in kink 310, enter backlight module inside with various angle reflections, be equivalent to behind kink 310 interior abundant mixed lights again entry of backlight module internal, therefore eliminated the dark space in the backlight module, improved backlight effect.
Further, described kink 310 outer surfaces 312 are covered with retroreflective sheeting or are coated with reflecting coating, to greatest extent the reflection of the led light source in the kink 310 is entered in the LGP 300, thereby reduced the loss of led light source in transmittance process, increased the brightness of backlight module.In addition, two end faces of kink 310 also can paste retroreflective sheeting or be coated with reflecting coating, prevent that led light source from penetrating from end face.
Further, the bending angle of described kink 310 is θ, and 90 °≤θ＜180 °.In fact, described bending angle θ ° all can in 0 °＜θ＜180, but in order to obtain higher led light source utilization rate, bending angle θ is preferably in 90 °≤θ＜180 °, and angle is larger, and led light source enters and more easily produces total reflection behind the kink and enter LGP, and the led light source loss is few, utilization rate is high, and the brightness of backlight module is also just higher.
Further, described incidence surface 311 is provided with a plurality of groove (not shown)s, and this groove is corresponding with LED410, LED410 is placed in the groove, thereby led light source can not distribute everywhere, all enter kink 310 and after kink 310 total reflections, enter LGP 300, further reduced the loss of led light source, increased the brightness of backlight module.
Further, described backboard 100 is provided with reinforcement and little convex closure near an end of light source module 400, can increase the intensity of backboard 100, particularly select thinner or during yielding material when backboard 100, can strengthen planarization and the intensity of whole backlight module, the light-emitting area 411 of avoiding causing light source module 400 because of backboard 100 distortion is with incidence surface 311 dislocation of kink 310 or isolate larger gap light leak, further reduces the led light source loss.Certainly, if backboard 100 materials are thicker or intensity is better, in order to cut down finished cost, backboard 100 directly can be made simple slab construction.
The present invention proposes a kind of light-emitting diode display simultaneously, it comprises a backlight module, this backlight module comprises the light source module with light-emitting area and backboard, reflector plate and the LGP that stacks successively, described LGP one end extends to form the lighttight kink of an outer surface toward the bending of backboard direction, described kink distal end faces is incidence surface, and described light source module is fixed in back plate edges and its light-emitting area and described incidence surface and is oppositely arranged.Backlight module described in the present embodiment is the related backlight module of above-described embodiment among the present invention, does not repeat them here.
Should be understood that; below only be the preferred embodiments of the present invention; can not therefore limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (8)
1. backlight module, comprise the light source module with light-emitting area and backboard, reflector plate and the LGP that stacks successively, it is characterized in that, described LGP one end extends to form the lighttight kink of an outer surface toward the bending of backboard direction, described kink distal end faces is incidence surface, and described light source module is fixed in back plate edges and its light-emitting area and described incidence surface and is oppositely arranged.
2. backlight module according to claim 1 is characterized in that, described kink outer surface is covered with retroreflective sheeting or is coated with reflecting coating.
3. backlight module according to claim 1 is characterized in that, described light source module comprises LED substrate and a plurality of LED, and described LED substrate one end is fixed in described back plate edges, and the other end stretches out described backboard and is fixed with described a plurality of LED.
4. backlight module according to claim 3 is characterized in that, described incidence surface is provided with the groove of a plurality of accommodating described LED.
5. backlight module according to claim 1 is characterized in that, the bending angle of described kink is θ, and 90 °≤θ＜180 °.
6. backlight module according to claim 1 is characterized in that, described backboard is provided with reinforcement near an end of light source module.
7. each described backlight module is characterized in that according to claim 1-6, and described kink outer surface is curved.
8. a light-emitting diode display is characterized in that, comprises each described backlight module such as claim 1-8.
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| CN201210372201.5A CN102865516B (en) | 2012-09-28 | 2012-09-28 | Backlight module and light-emitting diode display |
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| CN201210372201.5A CN102865516B (en) | 2012-09-28 | 2012-09-28 | Backlight module and light-emitting diode display |
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| CN102865516A true CN102865516A (en) | 2013-01-09 |
| CN102865516B CN102865516B (en) | 2016-01-20 |
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Cited By (10)
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| CN103680339A (en) * | 2013-12-11 | 2014-03-26 | 广东长虹电子有限公司 | Radiating board and displayer with radiating board |
| CN105987356A (en) * | 2015-01-28 | 2016-10-05 | 扬升照明股份有限公司 | Light source module and L-shaped light guide plate |
| WO2016161664A1 (en) * | 2015-04-07 | 2016-10-13 | 武汉华星光电技术有限公司 | Display device and backlight module thereof |
| CN108614372A (en) * | 2018-06-06 | 2018-10-02 | 上海中航光电子有限公司 | Liquid crystal display device |
| CN109164519A (en) * | 2018-09-26 | 2019-01-08 | 惠州市华星光电技术有限公司 | Diffuser plate, backing structure and display panel |
| CN110297523A (en) * | 2019-06-30 | 2019-10-01 | Oppo广东移动通信有限公司 | A kind of control method of electronic device and electronic device |
| WO2020227893A1 (en) * | 2019-05-13 | 2020-11-19 | 京东方科技集团股份有限公司 | Electronic device |
| CN112435586A (en) * | 2020-11-30 | 2021-03-02 | 武汉天马微电子有限公司 | Display panel and display device |
| CN113253518A (en) * | 2021-05-18 | 2021-08-13 | 武汉华星光电技术有限公司 | Backlight module and display device |
| RU2774635C1 (en) * | 2021-06-10 | 2022-06-21 | ООО "Эй Ви Эй Системс" | Backlight module with liquid cooling |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103680339A (en) * | 2013-12-11 | 2014-03-26 | 广东长虹电子有限公司 | Radiating board and displayer with radiating board |
| CN105987356A (en) * | 2015-01-28 | 2016-10-05 | 扬升照明股份有限公司 | Light source module and L-shaped light guide plate |
| CN105987356B (en) * | 2015-01-28 | 2019-04-23 | 中强光电股份有限公司 | Light source module and L shape light guide plate |
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| CN108614372B (en) * | 2018-06-06 | 2021-07-16 | 上海中航光电子有限公司 | Liquid crystal display device having a plurality of pixel electrodes |
| CN109164519A (en) * | 2018-09-26 | 2019-01-08 | 惠州市华星光电技术有限公司 | Diffuser plate, backing structure and display panel |
| WO2020227893A1 (en) * | 2019-05-13 | 2020-11-19 | 京东方科技集团股份有限公司 | Electronic device |
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| CN110297523A (en) * | 2019-06-30 | 2019-10-01 | Oppo广东移动通信有限公司 | A kind of control method of electronic device and electronic device |
| CN110297523B (en) * | 2019-06-30 | 2021-08-17 | Oppo广东移动通信有限公司 | Electronic device and control method thereof |
| CN112435586A (en) * | 2020-11-30 | 2021-03-02 | 武汉天马微电子有限公司 | Display panel and display device |
| CN112435586B (en) * | 2020-11-30 | 2022-09-27 | 武汉天马微电子有限公司 | Display panel and display device |
| CN113253518A (en) * | 2021-05-18 | 2021-08-13 | 武汉华星光电技术有限公司 | Backlight module and display device |
| RU2774635C1 (en) * | 2021-06-10 | 2022-06-21 | ООО "Эй Ви Эй Системс" | Backlight module with liquid cooling |
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| CN102865516B (en) | 2016-01-20 |
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Effective date of registration: 20210713 Address after: Room 821, No. 333, jiufo Jianshe Road, Zhongxin Guangzhou Knowledge City, Huangpu District, Guangzhou, Guangdong 510000 Patentee after: Skyworth Group Intelligent Technology Co., Ltd Address before: No.99, Kaida Road, Guangzhou Economic and technological development science and Technology City, Guangzhou, Guangdong 510000 Patentee before: GUANGZHOU SKYWORTH FLAT DISPLAY TECHNOLOGY Co.,Ltd. |