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Publication numberCN102230591 A
Publication typeApplication
Application numberCN 201110203572
Publication date2 Nov 2011
Filing date20 Jul 2011
Priority date20 Jul 2011
Also published asCN102230591B
Publication number201110203572.6, CN 102230591 A, CN 102230591A, CN 201110203572, CN-A-102230591, CN102230591 A, CN102230591A, CN201110203572, CN201110203572.6
Inventors刘良云
Applicant康佳集团股份有限公司
Export CitationBiBTeX, EndNote, RefMan
External Links: SIPO, Espacenet
Backlight module
CN 102230591 A
Abstract
The invention provides a backlight module which comprises a light guide plate, a plurality of light sources, a diffusion film, a first brightness enhancement film and a second brightness enhancement film. The invention can completely overcome the defects of the prior art. Because dot correction is not made among a plurality of light sources, the guiding effect of the second brightness enhancement film to light rays is avoided by arranging the position of the second brightness enhancement film. The backlight module can be applied to an LED liquid crystal module, the visual effect of the LED liquid crystal module is improved, and the performance of a liquid crystal television is optimized. Moreover, errors generated in assembly and deviations occurring in printing positioning can not affect the effect generated by the backlight module.
Claims(3)  translated from Chinese
1. 一种背光模组,其特征在于:包括一导光板,所述导光板设有一入光侧;多个光源,所述多个光源排成一列并平行于所述导光板的入光侧; 一扩散片,设置于所述导光板之上,所述扩散片的侧面与所述导光板的入光侧平齐; 第一增光片,包括第一顶面、第一底面及连接于所述第一顶面及第一底面的第一侧面, 所述第一顶面及第一底面相对设置,所述第一顶面设有多个第一棱镜,所述第一增光片设置于所述扩散片之上,所述第一增光片的第一底面朝向所述扩散片,所述第一增光片的第一侧面与所述导光板的入光侧平齐,所述第一增光片的第一棱镜的延伸方向平行于所述光源的排列方向;第二增光片,包括第二顶面、第二底面及连接于所述二顶面及第二底面的第二侧面,所述第二顶面及第二底面相对设置,所述第二顶面设有多个第二棱镜,所述第二增光片设置于所述第一增光片之上,所述第二增光片的第二底面朝向所述第一增光片;所述第二增光片的第二棱镜的延伸方向垂直于所述第一增光片的第一棱镜的延伸方向,所述第一增光片的第一侧面与所述第二增光片的第二侧面之间的距离为3. 5毫米。 A backlight module, which comprising: a light guide plate provided with a light incident side; a plurality of light sources, the plurality of light sources arranged in a row and parallel to the light incident side of the light guide plate ; a diffusion sheet disposed above the light guide plate, the side surface and diffuse into the side of the light guide plate sheet flush; a first brightness enhancement film, comprising a first top surface, a bottom surface and is connected to the first a first side surface of said first top surface and a first bottom surface, the first top surface and a bottom surface disposed opposite the first, the first top surface with a plurality of first prism, said first optical films disposed to the above said diffuser sheet, a bottom surface of said first sheet toward said first credit diffusion sheet, a first side of said first optical films with the incident light side of the light guide plate flush, the first BEF a first prism extension direction parallel to the arrangement direction of the light source; a second optical films, comprising a second top surface, a bottom surface and a second top surface connected to said second bottom surface and a second second side, said first two of the top and the second bottom surface opposite said second top surface with a plurality of second prism, the second optical films disposed on the first brightness enhancement film, a second sheet of the second credit toward the bottom surface of the first optical films; the extending direction of the second optical films of the second prism is perpendicular to the extending direction of the first optical films of the first prism, said first side of the first BEF distance between the second side of said second optical films is between 3.5 mm.
2.根据权利要求1所述背光模组,其特征在于:所述背光模组设有胶框,所述胶框压持于所述第二增光片,所述胶框压持于所述第二增光片的长度大于或等于2毫米。 2. The backlight module of claim 1, characterized in that: the backlight plastic box has a plastic frame holding the pressure in the second optical films, the glue holding the pressure in the first frame two optical films of length greater than or equal to 2 mm.
3.根据权利要求1所述背光模组,其特征在于:所述扩散片与所述第一增光片的尺寸相同。 3. The backlight module as claimed in claim 1, wherein: said first diffusion sheet and the same as the size of optical films.
Description  translated from Chinese

背光模组 Backlight

技术领域 FIELD

[0001] 本发明涉及一种背光模组,尤其涉及一种可削弱亮暗情况引起的萤火虫现象的背光模组。 [0001] The present invention relates to a backlight module, particularly, to a bright and dark conditions can weaken due to the phenomenon of fireflies backlight.

背景技术 BACKGROUND

[0002] 随着我国LED液晶电视需求量急剧飙升,LED背光模组领域发展迅猛,从节能、环保、成本的角度考虑,LED灯的颗数逐渐减少,由之前的四侧入光演变为目前的单侧入光,且省掉DBEF(Dual Brightness Enhancement Film,偏振式增亮片)膜片,而亮度需要达到要求,故需要采用两张BEF膜片(Brightness Enhancement Film,增亮片),但此时背光模组的萤火虫现象变得更加明显。 [0002] With the dramatic surge in the demand for our LED LCD TVs, LED backlight rapid development of the field, from the viewpoint of energy saving, environmental protection, and cost point of view, the number of pieces of LED lights gradually reduced from four sides of the light before the evolution of the current unilateral into light, and dispense with DBEF (Dual Brightness Enhancement Film, polarizing style brightening piece) diaphragm and brightness need to meet the requirements, so the need to use two diaphragm BEF (Brightness Enhancement Film, brightness enhancement film), but at this time Firefly backlight phenomenon becomes more apparent.

[0003] 用已有的解萤火虫技术,若加灯数量有限,萤火虫的解决不能达到最佳,且成本增加;若采用灯与灯之间导光板网点修正处理,则会出现两个方面到问题:1. 一般背板定位柱与导光板定位柱卡槽位置会预留一定间隙值,即会出现导光板会左右移动一定到距离, 一般0. 2mm左右,另加上组装误差和背板公差导致网点修正处位置偏移,出现更严重的萤火虫现象;2.在导光板印刷网点过程中,由于目前印刷机台技术限制,还无法保证网点印刷与设计位置完全一致,此问题会导光板萤火虫解决的参差不齐,定位稍好会对萤火虫解决有帮助,而定位稍偏会出现更严重的萤火虫现象。 [0003] The use of existing technology solution fireflies, if a limited number of lights, fireflies not achieve the best solution, and increased costs; the use of a light guide dot correction processing of lamps, two aspects to the problem occurs : a general orientation column backplane slot position and the light guide plate positioning column will set aside a certain gap value, will appear around the light guide plate will move certain to distance, usually about 0. 2mm, plus another error and backplane assembly tolerances leading to outlets at position offset correction, there are more serious firefly phenomenon; 2. print outlets in the light guide plate process, due to the current technical limitations of printing units, it can not guarantee exactly the same location and design of network printing, this problem firefly light guide solving the uneven, slightly better location would help solve the fireflies, and the positioning Shaopian will appear more serious firefly phenomenon.

发明内容 SUMMARY

[0004] 为了克服上述现有技术的不足,本发明提供一种背光模组,包括一导光板,所述导光板设有一入光侧; [0004] In order to overcome the deficiencies of the prior art, the present invention provides a backlight module, comprising a light guide plate is provided with a light incident side;

多个光源,所述多个光源排成一列并平行于所述导光板的入光侧; 一扩散片,设置于所述导光板之上,所述扩散片的侧面与所述导光板的入光侧平齐; 第一增光片,包括第一顶面、第一底面及连接于所述第一顶面及第一底面的第一侧面, 所述第一顶面及第一底面相对设置,所述第一顶面设有多个第一棱镜,所述第一增光片设置于所述扩散片之上,所述第一增光片的第一底面朝向所述扩散片,所述第一增光片的第一侧面与所述导光板的入光侧平齐,所述第一增光片的第一棱镜的延伸方向平行于所述光源的排列方向; A plurality of light sources, the plurality of light sources arranged in a row and parallel to the light incident side of the light guide plate; a diffusion sheet disposed above the light guide plate, the diffusion sheet side surface of the light guide plate into flush light side; first brightness enhancement film, comprising a first top surface, a first bottom surface and connected to the first top surface and a first bottom surface of the first side, the first top surface and a bottom surface disposed opposite the first, The first top surface provided with a plurality of first prism, said first optical films disposed on the diffusion sheet, the bottom surface of the first sheet toward the first credit to a diffusion sheet, the first credit a first side plate and the incident light side of the light guide plate flush, the extending direction of the first optical films of the first prism arranged in a direction parallel to the light source;

第二增光片,包括第二顶面、第二底面及连接于所述二顶面及第二底面的第二侧面,所述第二顶面及第二底面相对设置,所述第二顶面设有多个第二棱镜,所述第二增光片设置于所述第一增光片之上,所述第二增光片的第二底面朝向所述第一增光片; A second optical films, comprising a second top surface, a bottom surface and a second connected to said two surfaces and the second side of the second bottom surface, the second top surface and the second bottom surface opposite said second top surface A plurality of second prism, said second optical films is provided at the top of the first optical films, graced the second piece of the second bottom surface toward the first optical films;

所述第二增光片的第二棱镜的延伸方向垂直于所述第一增光片的第一棱镜的延伸方向,所述第一增光片的第一侧面与所述第二增光片的第二侧面之间的距离为3. 5毫米。 The extending direction of the second credit to a second prism sheet perpendicular to the extending direction of said first optical films of the first prism, the second side of the first side of said first optical films with second optical films of the the distance between the 3.5 mm.

[0005] 本发明的进一步改进为,所述背光模组设有胶框,所述胶框压持于所述第二增光片,所述胶框压持于所述第二增光片的长度大于或等于2毫米。 [0005] The present invention is a further improvement, the backlight module has a plastic box, the plastic box in the second pressure holding Enhancement Film, the pressure held in a plastic frame of the second optical films is longer than or equal to 2 mm.

[0006] 本发明的进一步改进为,所述扩散片与所述第一增光片的尺寸相同。 [0006] The present invention is further improved, the diffusion sheet and the same size as the first optical films. [0007] 相较于现有技术,本发明可以完全克服已有技术的缺陷,由于没有对应多个光源之间做网点修正,通过设置第二增光片位置以避免第二增光片对光线的导引效果,可应用于LED液晶模组,提升LED液晶模组的视效品味,优化液晶电视性能。 [0007] Compared to the prior art, the present invention can completely overcome the shortcomings of the prior art, because there is no correspondence between a plurality of light sources do outlets correction, brightness enhancement film by providing the second position in order to avoid a second optical films to light guide cited effects, LED LCD modules can be used to enhance the taste of visual effects LED LCD module to optimize the performance of LCD TVs. 当光线由入光侧进入导光板时,若导光板入光面与第二增光片的第二侧面平齐或距离较近时,光线会直接由光源方向入射到第二增光片,第二增光片对光线有导引作用,形成此亮暗界线分明的萤火虫。 When the light from the light into the light guide plate side, a second side if the light guide into the smooth and flush with the second optical films or short distance, the light will be the direction of the incident light directly from the second optical films, the second credit tablets to light with a guide, the formation of the light and dark fireflies distinct boundaries. 通过将第一增光片的第一侧面与所述第二增光片的第二侧面之间设置一定间距,当光线由入光侧直接进入导光板,光线无法直接投射至第二增光片,光线只有通过导光板扩散至第一增光片及第二增光片,此时光线由于与第二增光片的角度非导引方向,故可避免萤火虫的产生。 By setting a certain distance between the second side of the first side of the first and the second optical films of the brightness enhancement film, when the light from the side directly into the light guide plate, the light can not be projected directly to the second brightness enhancement film, light only diffusion through the light guide plate to the first and second optical films graced piece, this time because of the light and the angle of the second optical films non-guided directions, it can avoid the generation of firefly. 本发明可以完全克服已有技术的缺陷,由于没有对应多个光源之间做网点修正,仅是将最上方的第二增光片内缩一定宽度尺寸,以避免第二增光片对光线的导引效果,故组装中产生的误差和印刷定位上出现的偏差都不会影响本发明背光模组产生的效果。 The present invention can completely overcome the shortcomings of the prior art, because there is no correspondence between the plurality of light sources do outlets correction, only a certain width dimension in the condensing uppermost second brightness enhancement film, in order to avoid a second optical films to light guide effect, it appears on the bias error and print positioning assembly will not affect the results produced by the backlight module produced by the invention.

附图说明 Brief Description

[0008] 图1是本发明背光模组的结构示意图。 [0008] Figure 1 is a schematic structural view of the present invention, the backlight module.

[0009] 图2是本发明背光模组的另一结构示意图。 [0009] FIG. 2 is a schematic view of another configuration of the present invention, the backlight module.

具体实施方式 DETAILED DESCRIPTION

[0010] 下面结合附图说明及具体实施方式对本发明进一步说明。 [0010] described below in conjunction with the accompanying drawings and specific embodiments of the present invention is further illustrated.

[0011] 请参阅图1及图2,本发明提供了一种背光模组10,包括导光板11、多个光源13、 扩散片15、第一增光片17、第二增光片18。 [0011] Please refer to FIGS. 1 and 2, the present invention provides a backlight module 10, includes a light guide plate 11, a plurality of light source 13, a diffusion sheet 15, a first brightness enhancement film 17, the second optical films 18.

[0012] 导光板11设有一入光侧111 ;多个光源13排成一列并平行于所述导光板11的入光侧111 ;一扩散片15,设置于所述导光板11之上,所述扩散片15的侧面与所述导光板11 的入光侧111平齐; [0012] The light guide plate 11 is provided with a light incident side of 111; a plurality of light sources 13 arranged in a row and parallel to the light incident side 111 of the light guide plate 11; and a diffusing sheet 15, disposed above the light guide plate 11, the said side surface of the diffusion sheet 15 and the light guide plate 11 into the flush side 111;

第一增光片17包括第一顶面171、第一底面173及连接于所述第一顶面171及第一底面173的第一侧面175,所述第一顶面171及第一底面173相对设置,所述第一顶面171设有多个第一棱镜177,所述第一增光片17设置于所述扩散片15之上,所述第一增光片17的第一底面173朝向所述扩散片15,所述第一增光片17的第一侧面175与所述导光板11的入光侧111平齐,所述第一增光片17的第一棱镜177的延伸方向平行于所述光源13的排列方向; First Enhancement Film 17 includes a first top surface 171, a first bottom surface 173 and connected to the first top surface 171 and a first bottom surface 173 of the first side 175, the first top surface 171 and bottom surface 173 opposite the first provided, the first top surface 171 with a plurality of first prism 177, the first brightness enhancement film 17 is provided on top of the diffusion sheet 15, a first bottom surface 17 of the first brightness enhancement film 173 toward the The diffusion sheet 15, a first side of said first optical films 17 into the light guide plate 175 and 111 flush with the side 11 of the first prism extending in a first direction 177 of BEF 17 is parallel to the light source the alignment direction 13;

第二增光片18包括第二顶面181、第二底面183及连接于所述第二顶面181及第二底面183的第二侧面185,所述第二顶面181及第二底面183相对设置,所述第二顶面181设有多个第二棱镜187,所述第二增光片18设置于所述第一增光片17之上,所述第二增光片18的第二底面183朝向所述第一增光片17 ;所述第二增光片18的第二棱镜187的延伸方向垂直于所述第一增光片17的第一棱镜177的延伸方向,所述第一增光片17的第一侧面175与所述第二增光片18的第二侧面185之间的距离L为3. 5毫米。 Second optical films 18 includes a second top surface 181, a second bottom surface 183 and a second side connected to said second top surface 181 and bottom surface 183 of the second 185, the second top surface 181 and a second bottom surface 183 relative set, the second top surface 181 with a plurality of second prism 187, the second optical films 18 disposed on the first brightness enhancement film 17, the second optical films 183 toward the second bottom surface 18 The first graced sheet 17; extending direction of the second optical films 18 second prism 187 is perpendicular to the direction of extension of the first prism 177 of the first graced the sheet 17, the first 17 of the first optical films One side of the second side surface 175 and the second optical films 18 a distance L 185 between the 3.5 mm. 所述背光模组10还设有胶框(图未示),所述胶框压持于所述第二增光片18,所述胶框压持于所述第二增光片18的长度大于或等于2毫米。 The backlight module 10 also has a plastic frame (not shown), a plastic box holding the pressure in the second optical films 18, the plastic box holding pressure to the second optical films is greater than the length of 18 or equal to 2 mm.

[0013] 当光线由入光侧111进入导光板11时,若导光板11入光面与第二增光片18的第二侧面185平齐或距离较近时,光线会直接由光源13方向入射到第二增光片18,第二增光片18对光线有导引作用,形成此亮暗界线分明的萤火虫。 [0013] When the light from the light guide plate 11 into the side of 111, if the second side plates 11 and the second graced the glossy sheet 18 185 flush or short distance, the light will be the direction of the incident light source directly from 13 to the second optical films 18, the second optical films 18 pairs of light with a guide, the formation of the light and dark fireflies distinct boundaries. 通过将第一增光片17的第一侧面175与所述第二增光片18的第二侧面185之间设置一定间距,当光线由入光侧111直接进入导光板11,光线无法直接投射至第二增光片18,光线只有通过导光板11扩散至第一增光片17及第二增光片18,此时光线由于与第二增光片18的角度非导引方向,故可避免萤火虫的产生。 By setting a certain distance between the first side 185 of the second side 17 of the 175 first graced piece graced with the second sheet 18, when the light from the light side of the 111 directly into the light guide plate 11, the light can not be projected directly through Second graced sheet 18, the light guide plate 11 only through the credit spread to the first sheet 17 and the second optical films 18, when the light due to the angle of the second optical films 18 non-guided direction, it can avoid the generation of firefly. 本发明可以完全克服已有技术的缺陷,由于没有对应多个光源13之间做网点修正,仅是将最上方的第二增光片18内缩一定宽度尺寸,以避免第二增光片18对光线的导引效果,故组装中产生的误差和印刷定位上出现的偏差都不会影响本发明背光模组10产生的效果。 The present invention can completely overcome the shortcomings of the prior art, the absence of a corresponding plurality of light sources do outlets ranging between 13, only the top of the second optical films 18 shrink certain width dimension, in order to avoid a second optical films 18 pairs of light guide effect, so deviations of the positioning assembly error and printing will not affect the results produced backlight module 10 of the present invention is produced.

[0014] 以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明,不能认定本发明的具体实施只局限于这些说明。 [0014] The above is described in further detail with reference to specific preferred embodiments of the present invention is made, can not identify a specific embodiment of the present invention is limited to these instructions. 对于本发明所属技术领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干简单推演或替换,都应当视为属于本发明的保护范围。 Those of ordinary skill in the art the present invention, without departing from the inventive concept of the premise, but also can make a number of simple deduction or replacement, should be considered as belonging to the scope of the present invention.

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Classifications
International ClassificationF21Y115/10, F21Y101/00, G02F1/13357, F21V13/00, F21S8/00
Legal Events
DateCodeEventDescription
2 Nov 2011C06Publication
4 Dec 2013C10Entry into substantive examination
28 Oct 2015C14Grant of patent or utility model