CN100582823C

Movatterモバイル変換

Info

Publication number: CN100582823C
Application number: CN200610201387A
Authority: CN
Inventors: 黎瑞雍
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2006-12-25
Filing date: 2006-12-25
Publication date: 2010-01-20
Anticipated expiration: 2026-12-25
Also published as: CN101210976A

Abstract

The invention relates to a light guide plate, comprising an incidence plane, an emergent plane crossed with the incidence plane and an undersurface opposite to the emergent plane. The incidence plane comprises at least a first groove passing through the emergent plane and the undersurface as a first light receiving region, and at least a second groove passing through the emergent plane and the undersurface as a second light receiving area. As the incidence plane forms at least two light receiving areas of different structures, different guides and adjustments of light from the same source can be realized so as to obtain different lights from the light guide plate, achieving the multi-functional light guide effect of the plate.

Description

Translated fromChinese

导光板及背光模组Light guide plate and backlight module

技术领域technical field

本发明涉及一种导光板以及具有该导光板的背光模组。The invention relates to a light guide plate and a backlight module with the light guide plate.

背景技术Background technique

由于液晶显示器面板的液晶本身不具发光特性，因而，为达到显示效果，需给液晶显示器面板提供一面光源装置，如背光系统，其作用在于向液晶显示器面板供应亮度充分且分布均匀的面光源。Since the liquid crystal itself of the liquid crystal display panel does not have light-emitting characteristics, in order to achieve the display effect, it is necessary to provide a surface light source device for the liquid crystal display panel, such as a backlight system, whose function is to supply a surface light source with sufficient brightness and uniform distribution to the liquid crystal display panel.

现有技术的背光系统主要由光源、导光板、反射板、扩散板与棱镜板组成。该光源可设置在导光板一侧或两相对侧并将光束发射至该导光板。该导光板的作用在于引导光束传输方向，使光束由导光板的出光面均匀出射，反射板相对该导光板的底面设置，以将由导光板底面出射的光束再次反射入该导光板内，提高光束的利用率。扩散板与棱镜板相对导光板的出光面依次设置，以使由导光板出射的光束分布更加均匀，进而提高液晶显示器面板的亮度与均匀性。The backlight system in the prior art is mainly composed of a light source, a light guide plate, a reflection plate, a diffuser plate and a prism plate. The light source can be arranged on one side or two opposite sides of the light guide plate and emit light beams to the light guide plate. The function of the light guide plate is to guide the light beam transmission direction, so that the light beam is uniformly emitted from the light-emitting surface of the light guide plate, and the reflector is arranged relative to the bottom surface of the light guide plate to reflect the light beam emitted from the bottom surface of the light guide plate into the light guide plate again, so as to improve the light beam. utilization rate. The diffuser plate and the prism plate are sequentially arranged relative to the light emitting surface of the light guide plate, so that the distribution of the light beam emitted from the light guide plate is more uniform, thereby improving the brightness and uniformity of the liquid crystal display panel.

由于发光二极管具有工作电压低、发光亮度高、响应速度快、寿命长的优点，使其广泛应用在手机、PDA(个人数字助理)、显示器的背光模组中。但是，发光二极管的出射光具较强的光学指向性，即出射光具有一定的发散角度，当其直接射入背光模组的导光板时，使得导光板入光面一侧易出现光学暗区，且与发光二极管相对的位置易出现光柱，不易获得较佳的入光均匀度。Because light-emitting diodes have the advantages of low operating voltage, high luminous brightness, fast response speed, and long life, they are widely used in backlight modules of mobile phones, PDAs (Personal Digital Assistants), and displays. However, the outgoing light of the light-emitting diode has strong optical directivity, that is, the outgoing light has a certain divergence angle. When it directly enters the light guide plate of the backlight module, optical dark areas are prone to appear on the light incident side of the light guide plate. , and the position opposite to the light-emitting diode is prone to light columns, and it is difficult to obtain better uniformity of light incident.

请参阅图1与图2，分别是一种现有技术背光模组的平面示意图与立体示意图。该背光模组10包括光源12及导光板13，导光板13包括一入光面131，一与入光面131相连的出光面132，及一与出光面132相对的底面133。光源12相对导光板13的入光面131设置，该光源12为若干发光二极管，该若干发光二极管的出射光束由导光板13的入光面131进入导光板13后，在导光板13内发生反射。该导光板13引导光源12发出光束的传输方向，并将其转换成平面光从导光板13的出光面132出射。但是，由于发光二极管的出射光具有一定发散角，使得导光板13的入光面131一侧出现光学暗区15及光柱16，该光学暗区15主要分布在二相邻发光二极管之间，该光柱16分布在导光板13正对着发光二极管的位置，影响背光模组10的亮度及出光均匀性。Please refer to FIG. 1 and FIG. 2 , which are respectively a plan view and a three-dimensional view of a conventional backlight module. Thebacklight module 10 includes alight source 12 and alight guide plate 13 . Thelight guide plate 13 includes alight incident surface 131 , alight exit surface 132 connected to thelight incident surface 131 , and abottom surface 133 opposite to thelight exit surface 132 . Thelight source 12 is arranged relative to thelight incident surface 131 of thelight guide plate 13. Thelight source 12 is a plurality of light emitting diodes. . Thelight guide plate 13 guides the transmission direction of the light beam emitted by thelight source 12 , and converts it into planar light to exit from thelight emitting surface 132 of thelight guide plate 13 . However, since the outgoing light of the light emitting diodes has a certain divergence angle, an opticaldark area 15 and alight column 16 appear on thelight incident surface 131 side of thelight guide plate 13, and the opticaldark area 15 is mainly distributed between two adjacent light emitting diodes. Thelight beams 16 are distributed at the position where thelight guide plate 13 faces the light emitting diodes, which affect the brightness and light uniformity of thebacklight module 10 .

有鉴于此，有必要提供一种可使光线均匀出射的导光板，以及发光亮度均匀的背光模组。In view of this, it is necessary to provide a light guide plate that can emit light uniformly, and a backlight module that emits uniform brightness.

发明内容Contents of the invention

以下，将以实施例说明一种可通过对入射光进行有效调控使得光线均匀出射的导光板，以及具有该导光板的背光模组。Hereinafter, an embodiment will be used to illustrate a light guide plate capable of uniformly emitting light through effective regulation of incident light, and a backlight module having the light guide plate.

一种导光板，其包括一个入光面，一个与入光面相交的出光面及一个与出光面相对的底面。所述入光面包括至少一个贯通出光面与底面的第一凹槽作为第一光接收区域，以及至少一个贯通出光面与底面的第二凹槽作为第二光接收区域，所述第一凹槽与第二凹槽的形状不同，并交替排布在入光面上。A light guide plate comprises a light incident surface, a light exit surface intersecting the light incident surface and a bottom surface opposite to the light exit surface. The light incident surface includes at least one first groove penetrating the light exit surface and the bottom surface as the first light receiving area, and at least one second groove penetrating the light exit surface and the bottom surface as the second light receiving area. The grooves are different in shape from the second grooves, and are alternately arranged on the light incident surface.

一种具有上述导光板的背光模组，其包括至少两个光源，所述导光板入光面的第一光接收区域及第二光接收区域分别对应设置有一个光源。A backlight module with the above-mentioned light guide plate includes at least two light sources, and a light source is respectively provided in the first light-receiving area and the second light-receiving area of the light-incident surface of the light guide plate.

所述实施例的导光板具有以下特点：由于入光面形成有不同结构的至少两个光接收区域，这样可实现对相同光源发出的光线产生不同的导引和调整，从而得到不同种从导光板出射的光线，实现导光板的多功能导光效果。The light guide plate of the embodiment has the following characteristics: since at least two light-receiving regions with different structures are formed on the light-incident surface, the light emitted by the same light source can be guided and adjusted differently, so that different kinds of light guides can be obtained. The light emitted by the light plate realizes the multifunctional light guide effect of the light guide plate.

所透具有上述导光板的背光模组具有两种发光特点：第一，当单独在第一光接收区域设置光源时，从光源发出的光线由入光面的第一光接收区域进入导光板，并由出光面上与第一光接收区域对应的出光区域导出，由于第一光接收区域和与其对应的出光区域的结构特点使得经导光板导出的光线具有一定特性，如一定的亮度、均匀度、视角范围等特点。第二，单独在第二光接收区域设置光源时，从光源发出的光线由入光面的第二光接收区域进入导光板，并由出光面上与第二光接收区域对应的出光区域导出，由于第二光接收区域和与其对应的出光区域的结构特点使得经导光板导出的光线光具有另一特性，如一定的亮度、均匀度、视角范围等特点。The backlight module with the above-mentioned light guide plate has two lighting characteristics: first, when the light source is installed in the first light receiving area alone, the light emitted from the light source enters the light guide plate from the first light receiving area of the light incident surface, And it is derived from the light-emitting area corresponding to the first light-receiving area on the light-emitting surface. Due to the structural characteristics of the first light-receiving area and the corresponding light-emitting area, the light guided through the light guide plate has certain characteristics, such as certain brightness and uniformity. , viewing angle range and other characteristics. Second, when a light source is provided in the second light-receiving area alone, the light emitted from the light source enters the light guide plate from the second light-receiving area on the light-incident surface, and is exported from the light-emitting area corresponding to the second light-receiving area on the light-emitting surface, Due to the structural characteristics of the second light-receiving area and the corresponding light-emitting area, the light guided through the light guide plate has another characteristic, such as certain brightness, uniformity, and viewing angle range.

附图说明Description of drawings

图1为现有技术背光模组的平面示意图。FIG. 1 is a schematic plan view of a prior art backlight module.

图2为现有技术背光模组的立体示意图。FIG. 2 is a three-dimensional schematic diagram of a backlight module in the prior art.

图3为本技术方案第一实施例的导光板的立体示意图。FIG. 3 is a three-dimensional schematic diagram of a light guide plate according to the first embodiment of the technical solution.

图4为本技术方案第一实施例的导光板的平面示意图。FIG. 4 is a schematic plan view of a light guide plate according to the first embodiment of the technical solution.

图5为本技术方案第二实施例的导光板的平面示意图。FIG. 5 is a schematic plan view of a light guide plate according to a second embodiment of the technical solution.

图6为本技术方案第三实施例的导光板的平面示意图。FIG. 6 is a schematic plan view of a light guide plate according to a third embodiment of the technical solution.

图7为本技术方案第四实施例的背光模组平面示意图。FIG. 7 is a schematic plan view of a backlight module according to a fourth embodiment of the technical solution.

图8为本技术方案第五实施例的背光模组平面示意图。FIG. 8 is a schematic plan view of a backlight module according to a fifth embodiment of the technical solution.

图9为本技术方案第六实施例的背光模组平面示意图。FIG. 9 is a schematic plan view of a backlight module according to a sixth embodiment of the technical solution.

具体实施方式Detailed ways

以下将结合附图及多个实施例对本技术方案的导光板及具有该导光板的背光模组进行具体说明。The light guide plate and the backlight module having the light guide plate of the present technical solution will be described in detail below with reference to the accompanying drawings and multiple embodiments.

如图3和图4所示，本技术方案第一实施例提供一种导光板200，其包括一入光面210，一出光面220，一底面230及多个侧面240。所述入光面210用来接收光源发出的光线，所述出光面220与入光面210相交，所述底面230与出光面220相对，所述多个侧面240用以连结入光面210、出光面220及底面230，以形成导光板200整体结构。本实施例中，出光面220与入光面210相邻且垂直相交，底面230与出光面220平行相对设置。As shown in FIG. 3 and FIG. 4 , the first embodiment of the technical solution provides alight guide plate 200 , which includes alight incident surface 210 , alight exit surface 220 , abottom surface 230 and a plurality ofside surfaces 240 . Thelight incident surface 210 is used to receive the light emitted by the light source, thelight exit surface 220 intersects thelight incident surface 210, thebottom surface 230 is opposite to thelight exit surface 220, and the plurality ofside surfaces 240 are used to connect thelight incident surface 210, Thelight emitting surface 220 and thebottom surface 230 form the overall structure of thelight guide plate 200 . In this embodiment, thelight emitting surface 220 is adjacent to and perpendicular to thelight incident surface 210 , and thebottom surface 230 is parallel to and opposite to thelight emitting surface 220 .

所述入光面210形成有至少两个光接收区域，以使同种光源发出的光线依照两种不同的发散角度进入导光板200，并且使得导光板200产生两种不同的出射光，从而实现导光板200的多功能导光效果。本实施例中，导光板200的入光面210包括一个第一光接收区域和一个第二光接收区域，所述第一光接收区域为第一凹槽211，所述第二光接收区域为第二凹槽212。第一凹槽211与出光面220及底面230相贯通，且第二凹槽212也与出光面220及底面230相贯通。所述入光面210中、第一凹槽211与第二凹槽212可以相邻设置，也可以间隔一平面213设置。Thelight incident surface 210 is formed with at least two light-receiving regions, so that the light emitted by the same light source enters thelight guide plate 200 according to two different divergence angles, and makes thelight guide plate 200 generate two different outgoing lights, thereby realizing The multifunctional light guiding effect of thelight guide plate 200 . In this embodiment, thelight incident surface 210 of thelight guide plate 200 includes a first light receiving area and a second light receiving area, the first light receiving area is afirst groove 211, and the second light receiving area is thesecond groove 212 . Thefirst groove 211 communicates with thelight emitting surface 220 and thebottom surface 230 , and thesecond groove 212 also communicates with thelight emitting surface 220 and thebottom surface 230 . In thelight incident surface 210 , thefirst groove 211 and thesecond groove 212 can be arranged adjacent to each other or separated by aplane 213 .

第一凹槽211的纵向延伸方向(即，从导光板200的底面230向出光面220的垂直延伸方向，或者从出光面220向底面230的垂直延伸方向)与入光面210的纵向延伸方向(即，从底面230向出光面220的垂直延伸方向，或者从出光面220向底面230的垂直延伸方向)相平行或一致。所述第一凹槽211及第二凹槽212沿其纵向延伸方向在底面230或出光面220上的投影可以为U形、V形、弧形等规则或不规则形状。本实施例中，第一凹槽211为U形结构，第二凹槽212为V形槽，且第一凹槽211和第二凹槽212间隔一个平面213形成在导光板200的入光面210上。The longitudinal extension direction of the first groove 211 (that is, the vertical extension direction from thebottom surface 230 of thelight guide plate 200 to thelight exit surface 220, or the vertical extension direction from thelight exit surface 220 to the bottom surface 230) is the same as the longitudinal extension direction of thelight incident surface 210. (ie, the vertical extension direction from thebottom surface 230 to thelight exit surface 220 , or the vertical extension direction from thelight exit surface 220 to the bottom surface 230 ) are parallel or consistent. The projections of thefirst groove 211 and thesecond groove 212 on thebottom surface 230 or the light-emittingsurface 220 along their longitudinal extension direction can be regular or irregular shapes such as U-shape, V-shape, and arc. In this embodiment, thefirst groove 211 is a U-shaped structure, thesecond groove 212 is a V-shaped groove, and thefirst groove 211 and thesecond groove 212 are formed on the light incident surface of thelight guide plate 200 by aplane 213 210 on.

所述V形第二凹槽212中，V形槽的顶角小于等于140度且大于零度，本实施例中V形槽的顶角为100度。In the second V-shaped groove 212 , the top angle of the V-shaped groove is less than or equal to 140 degrees and greater than zero degrees. In this embodiment, the top angle of the V-shaped groove is 100 degrees.

所述出光面220上形成有至少一个第一微棱镜阵列221和至少一个第二微棱镜阵列222，第一微棱镜阵列221和第一凹槽211相对应设置，同时第二微棱镜阵列222和第二凹槽212相对应设置。由于本实施例中入光面210上设置有一个第一凹槽211和一个第二凹槽212，且第一凹槽211和第二凹槽212间隔一个平面213形成在导光板200的入光面210上，为此，出光面220上设置一个第一微棱镜阵列221和一个第二微棱镜阵列222，且第一微棱镜阵列221和第二微棱镜阵列222之间设置一个平面223。所达第一微棱镜阵列221与第二微棱镜阵列222分别垂直于入光面210。第一微棱镜阵列221和第二微棱镜阵列222分别由相同结构尺寸的微棱镜平行且相同间隔地排列组成，其中，组成第一微棱镜阵列221的第一微棱镜的结构与组成第二微棱镜阵列222的第二微棱镜的结构不同。At least onefirst microprism array 221 and at least onesecond microprism array 222 are formed on thelight exit surface 220, and thefirst microprism array 221 and thefirst groove 211 are arranged correspondingly, while thesecond microprism array 222 and Thesecond groove 212 is correspondingly provided. Since afirst groove 211 and asecond groove 212 are provided on thelight incident surface 210 in this embodiment, and thefirst groove 211 and thesecond groove 212 are separated by aplane 213 to form a light incident surface on thelight guide plate 200 On thesurface 210 , for this purpose, afirst microprism array 221 and asecond microprism array 222 are arranged on thelight emitting surface 220 , and aplane 223 is arranged between thefirst microprism array 221 and thesecond microprism array 222 . Thefirst microprism array 221 and thesecond microprism array 222 are respectively perpendicular to thelight incident surface 210 . Thefirst microprism array 221 and thesecond microprism array 222 are respectively made up of microprisms of the same structural size arranged in parallel and at equal intervals, wherein the structure of the first microprisms forming thefirst microprism array 221 is the same as that of forming the second microprisms The structures of the second microprisms of theprism array 222 are different.

所述组成第一微棱镜阵列221的第一微棱镜和组成第二微棱镜阵列222的第二微棱镜可以分别为凹槽或凸块，第一微棱镜与第二微棱镜的具体结构根据其各自对应的第一微棱镜和第二微棱镜的结构而定。本实施例中，第一微棱镜阵列221为与第一凹槽211相同结构的三棱柱阵列，且第一微棱镜阵列221中每个三棱柱的顶角为100度。第二微棱镜阵列222为与第二凹槽212相同结构的V形槽，且第二微棱镜阵列222中每个V形槽的顶角为100度。The first microprisms forming thefirst microprism array 221 and the second microprisms forming thesecond microprism array 222 can be grooves or protrusions respectively, and the specific structures of the first microprisms and the second microprisms are according to their It depends on the structures of the corresponding first microprisms and second microprisms. In this embodiment, thefirst microprism array 221 is a triangular prism array with the same structure as thefirst groove 211 , and the apex angle of each triangular prism in thefirst microprism array 221 is 100 degrees. Thesecond microprism array 222 is a V-shaped groove with the same structure as thesecond groove 212 , and the apex angle of each V-shaped groove in thesecond microprism array 222 is 100 degrees.

如图5所示，本技术方案第二实施例的导光板300与第一实施例的导光板200结构大体相同。所述导光板300的入光面310形成有交替排布的多个第一凹槽311和多个第二凹槽312，即，所述每个第一凹槽311的两相邻侧分别设置一个第二凹槽312，且每个第二凹槽312的两相邻侧分别设置一个第一凹槽311。每个第一凹槽311贯通出光面和与其相对的底面，每个第二凹槽312同样贯通出光面和与其相对的底面。第一凹槽311和第一实施例中的第一凹槽211结构、尺寸相同，且第二凹槽312和第一实施例中的第二凹槽212结构、尺寸相同。本实施例中，导光板300的入光面310包括两个第一凹槽311和两个第二凹槽312，且所述第一凹槽311和第二凹槽312交替排布，即，第一凹槽311、第二凹槽312、第一凹槽311、第二凹槽312依次排布形成入光面310。As shown in FIG. 5 , the structure of thelight guide plate 300 of the second embodiment of the technical solution is substantially the same as that of thelight guide plate 200 of the first embodiment. Thelight incident surface 310 of thelight guide plate 300 is formed with a plurality offirst grooves 311 and a plurality ofsecond grooves 312 arranged alternately, that is, two adjacent sides of eachfirst groove 311 are respectively arranged Onesecond groove 312 , and two adjacent sides of eachsecond groove 312 are respectively provided with onefirst groove 311 . Eachfirst groove 311 passes through the light emitting surface and the bottom surface opposite to it, and eachsecond groove 312 also passes through the light emitting surface and the bottom surface opposite to it. Thefirst groove 311 has the same structure and size as thefirst groove 211 in the first embodiment, and thesecond groove 312 has the same structure and size as thesecond groove 212 in the first embodiment. In this embodiment, thelight incident surface 310 of thelight guide plate 300 includes twofirst grooves 311 and twosecond grooves 312, and thefirst grooves 311 and thesecond grooves 312 are arranged alternately, that is, Thefirst groove 311 , thesecond groove 312 , thefirst groove 311 , and thesecond groove 312 are sequentially arranged to form thelight incident surface 310 .

出光面320上形成有交替排布的多个第一微棱镜阵列321和多个第二微棱镜阵列322，所述每个第一微棱镜阵列321的两相邻侧分别设置一个第二微棱镜阵列322，且每个第二微棱镜阵列322的两相邻侧分别设置一个第一微棱镜阵列321。出光面320上的第一微棱镜阵列321和入光面310上的第一微棱镜阵列311相对应设置，且第二微棱镜阵列322和入光面310上的第二微棱镜阵列312相对应设置。第一微棱镜阵列321和第一实施例中的第一微棱镜阵列221结构、尺寸相同，且第二微棱镜阵列322和第一实施例中的第二微棱镜阵列222结构、尺寸相同。本实施例中，出光面320包括两个第一微棱镜阵列321和两个第二微棱镜阵列322，且所述第一微棱镜阵列321和第二微棱镜阵列322交替排布，即，第一微棱镜阵列321，第二微棱镜阵列322、第一微棱镜阵列321、第二微棱镜阵列322依次排布形成出光面320。A plurality offirst microprism arrays 321 and a plurality ofsecond microprism arrays 322 are formed on thelight emitting surface 320 alternately, and two adjacent sides of eachfirst microprism array 321 are respectively provided with asecond microprism array 322, and two adjacent sides of eachsecond microprism array 322 are respectively provided with afirst microprism array 321. Thefirst microprism array 321 on thelight exit surface 320 is arranged corresponding to thefirst microprism array 311 on thelight incident surface 310, and thesecond microprism array 322 is corresponding to thesecond microprism array 312 on thelight incident surface 310 set up. Thefirst microprism array 321 has the same structure and size as thefirst microprism array 221 in the first embodiment, and thesecond microprism array 322 has the same structure and size as thesecond microprism array 222 in the first embodiment. In this embodiment, thelight output surface 320 includes twofirst microprism arrays 321 and twosecond microprism arrays 322, and thefirst microprism arrays 321 and thesecond microprism arrays 322 are arranged alternately, that is, the firstA microprism array 321 , asecond microprism array 322 , afirst microprism array 321 , and asecond microprism array 322 are sequentially arranged to form thelight exit surface 320 .

如图6所示，本技术方案第三实施例的导光板400与第二实施例的导光板300结构大体相同。所述所述导光板400的入光面410形成有交替排布的多个第一凹槽411和多个第二凹槽412，即，所述每个第一凹槽411的两相邻侧分别设置一个第二凹槽412，且每个第二凹槽412的两相邻侧分别设置一个第一凹槽411。每个第一凹槽411贯通出光面和与其相对的底面，每个第二凹槽412同样贯通出光面和与其相对的底面。As shown in FIG. 6 , the structure of thelight guide plate 400 of the third embodiment of the present technical solution is substantially the same as that of thelight guide plate 300 of the second embodiment. Thelight incident surface 410 of thelight guide plate 400 is formed with a plurality offirst grooves 411 and a plurality ofsecond grooves 412 arranged alternately, that is, two adjacent sides of eachfirst groove 411 Onesecond groove 412 is respectively provided, and two adjacent sides of eachsecond groove 412 are respectively provided with onefirst groove 411 . Eachfirst groove 411 passes through the light-emitting surface and the bottom surface opposite to it, and eachsecond groove 412 also passes through the light-emitting surface and the bottom surface opposite to it.

入光面410的多个第一凹槽411中进一步设置有多个微棱镜413，具体为至少一个微棱镜413设置于第一凹槽411的表面。所述微棱镜413可以为凹槽结构，也可以为凸块结构，以凸块结构为例具体说明微棱镜413的特点，即，在第一凹槽411的表面设置多个三棱柱，说选地，所述多个三棱柱均匀分布于第一凹槽411的表面。可以理解的，根据实际需要第二凹槽412中也可以进一步设置多个微棱镜，以达到更好的效果。A plurality ofmicroprisms 413 are further disposed in the plurality offirst grooves 411 of thelight incident surface 410 , specifically, at least onemicroprism 413 is disposed on the surface of thefirst groove 411 . Describedmicroprism 413 can be groove structure, also can be protruding bump structure, the characteristic ofmicroprism 413 is specifically described by taking bump structure as example, that is, a plurality of triangular prisms are set on the surface offirst groove 411, say selection Specifically, the plurality of triangular prisms are evenly distributed on the surface of thefirst groove 411 . It can be understood that according to actual needs, a plurality of microprisms can be further arranged in thesecond groove 412 to achieve better effects.

所述入光面410上的第一凹槽411的尺寸和形状以将入射光的亮度视角限定在140度的范围内为准，最好限定在100度的范围内。多个三棱柱形微棱镜413均匀的分布在第一凹槽411表面，一方面可以配合第一凹槽411更好的将入射光的亮度视角限定在140度(包括140度)的范围内，或最好限定在100度的范围内；另一方面，可以使得入射光亮度均匀的分布在上述140度或100度的视角范围内。The size and shape of thefirst groove 411 on thelight incident surface 410 is based on limiting the brightness viewing angle of the incident light within a range of 140 degrees, preferably within a range of 100 degrees. A plurality of triangular prism-shapedmicroprisms 413 are evenly distributed on the surface of thefirst groove 411. On the one hand, it can cooperate with thefirst groove 411 to better limit the brightness viewing angle of the incident light within the range of 140 degrees (including 140 degrees). Or preferably within the range of 100 degrees; on the other hand, the brightness of the incident light can be uniformly distributed within the above-mentioned viewing angle range of 140 degrees or 100 degrees.

对于上述第一、第二及第三实施例中的导光板，由于入光面形成有不同结构的至少两个光接收区域，这样可实现对相同光源发出的光线产生不同的导引和调整，从而得到不同种从导光板出射的光线，实现导光板的多功能导光效果。因此，本实施例中的导光板配合同种光源可以形成具有至少两种发光特点的背光模组。For the light guide plate in the above first, second and third embodiments, at least two light receiving regions with different structures are formed on the light incident surface, so that different guiding and adjustment of the light emitted by the same light source can be realized, Thereby, different kinds of light emitted from the light guide plate are obtained, and the multifunctional light guide effect of the light guide plate is realized. Therefore, the light guide plate in this embodiment cooperates with the same type of light source to form a backlight module with at least two lighting characteristics.

如图7所示，本技术方案第四实施例提供一种具有第一实施例中导光板200的背光模组500。所述背光模组500包括一个导光板200及至少两个光源510。所述每一个光接收区域对应设置一个光源510。本实施例中，背光模组500具有两个接收区域，即、第一凹槽211，第二凹槽212。因此，背光模组500包括两个光源510，其中，第一凹槽211、第二凹槽212分别对应设置一个光源510。所述光源510具有一个发光表面511，所述光源510与光接收区域相对应设置，即，其中一个光源510的发光表面511面向第一凹槽211设置，另一个光源510的发光表面511面向第二凹槽212设置。该至少两个光源510可以为同一种光源，也可以为不同种光源。As shown in FIG. 7 , the fourth embodiment of the technical solution provides abacklight module 500 having thelight guide plate 200 in the first embodiment. Thebacklight module 500 includes alight guide plate 200 and at least twolight sources 510 . Alight source 510 is correspondingly arranged in each light receiving area. In this embodiment, thebacklight module 500 has two receiving regions, namely, afirst groove 211 and asecond groove 212 . Therefore, thebacklight module 500 includes twolight sources 510 , wherein thefirst groove 211 and thesecond groove 212 are respectively provided with onelight source 510 correspondingly. Thelight source 510 has a light-emittingsurface 511, and thelight source 510 is arranged corresponding to the light-receiving area, that is, the light-emittingsurface 511 of one of thelight sources 510 is arranged facing thefirst groove 211, and the light-emittingsurface 511 of the otherlight source 510 faces thefirst groove 211. Twogrooves 212 are provided. The at least twolight sources 510 may be the same light source, or may be different light sources.

如图8所示，本技术方案第五实施例提供一种具有第二实施例中导光板300的背光模组600。所述背光模组600包括一个导光板300及多个光源610。所述导光板300的每一个光接收区域对应设置一个光源610。本实施例中，导光板300具有四个光接收区域，即，两个第一凹槽311和两个第二凹槽312。因此，背光模组600包括四个光源610，且每一个光源610对应一个光接收区域设置。每一个光源610具有一个发光表面611，且所述发光表面611与入光面310的光接收区域对应设置。该至少两个光源610可以为同一种光源，也可以为不同种光源。As shown in FIG. 8 , the fifth embodiment of the technical solution provides abacklight module 600 having thelight guide plate 300 in the second embodiment. Thebacklight module 600 includes alight guide plate 300 and a plurality oflight sources 610 . Each light receiving area of thelight guide plate 300 is correspondingly provided with alight source 610 . In this embodiment, thelight guide plate 300 has four light receiving regions, namely, twofirst grooves 311 and twosecond grooves 312 . Therefore, thebacklight module 600 includes fourlight sources 610, and eachlight source 610 is disposed corresponding to a light receiving area. Eachlight source 610 has alight emitting surface 611 , and thelight emitting surface 611 is arranged corresponding to the light receiving area of thelight incident surface 310 . The at least twolight sources 610 may be the same light source, or may be different light sources.

如图9所示，本技术方案第六实施例提供一种具有第三实施例中导光板400的背光模组700。所述背光模组700包括一个导光板400及多个光源710。所述导光板400的每一个光接收区域对应设置一个光源710。本实施例中，导光板400具有四个光接收区域，即，两个带微棱镜结构的第一凹槽411和两个第二凹槽412。因此，背光模组700包括四个光源710，且每一个光源710对应一个光接收区域设置。每一个光源710具有一个发光表面711，且所述发光表面711与入光面410的光接收区域对应设置。该至少两个光源710可以为同一种光源，也可以为不同种光源。As shown in FIG. 9 , the sixth embodiment of the technical solution provides abacklight module 700 having thelight guide plate 400 in the third embodiment. Thebacklight module 700 includes alight guide plate 400 and a plurality oflight sources 710 . Each light receiving area of thelight guide plate 400 is correspondingly provided with alight source 710 . In this embodiment, thelight guide plate 400 has four light receiving regions, namely, twofirst grooves 411 and twosecond grooves 412 with microprism structures. Therefore, thebacklight module 700 includes fourlight sources 710 , and eachlight source 710 is disposed corresponding to a light receiving area. Eachlight source 710 has alight emitting surface 711 , and thelight emitting surface 711 is arranged corresponding to the light receiving area of thelight incident surface 410 . The at least twolight sources 710 may be the same light source, or may be different light sources.

上述实施例的背光模组具有两种发光特点：第一，当单独在第一光接收区域设置光源时，从光源发出的光线由入光面的第一光接收区域进入导光板，并由出光面上与第一光接收区域对应的出光区域导出，由于第一光接收区域和与其对应的出光区域的结构转点使得经导光板导出的光线具有一定特性，如一定的亮度、均匀度、视角范围等特点。第二，单独在第二光接收区域设置光源时，从光源发出的光线由入光面的第二光接收区域进入导光板，并由出光面上与第二光接收区域对应的出光区域导出，由于第二光接收区域和与其对应的出光区域的结构特点使得经导光板导出的光线光具有另一特性，如一定的亮度、均匀度、视角范围等特点。The backlight module of the above-mentioned embodiment has two lighting characteristics: first, when the light source is installed in the first light-receiving area alone, the light emitted from the light source enters the light guide plate from the first light-receiving area of the light-incoming surface, and is emitted by the light-emitting area. On the surface, the light output area corresponding to the first light receiving area is derived. Due to the structural turning point of the first light receiving area and the corresponding light output area, the light guided through the light guide plate has certain characteristics, such as certain brightness, uniformity, and viewing angle. range and other features. Second, when a light source is provided in the second light-receiving area alone, the light emitted from the light source enters the light guide plate from the second light-receiving area on the light-incident surface, and is exported from the light-emitting area corresponding to the second light-receiving area on the light-emitting surface, Due to the structural characteristics of the second light-receiving area and the corresponding light-emitting area, the light guided through the light guide plate has another characteristic, such as certain brightness, uniformity, and viewing angle range.

此外，当背光模组具有多个不同结构的光接收区域对，可以配合同种或不同种光源产生多种不同特性的光线，这样可以使得导光板具有多个不同的导光特点，同时可以使得相应的背光模组具有多种发光性能。In addition, when the backlight module has multiple pairs of light-receiving regions with different structures, it can cooperate with the same or different light sources to generate a variety of light with different characteristics, so that the light guide plate can have multiple different light guide characteristics, and at the same time can make The corresponding backlight module has various luminous properties.

可以理解的是，对于本领域的普通技术人员来说，可以根据本发明的技本方案和技术构思做出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明权利要求的保护范围。It can be understood that, for those skilled in the art, various other corresponding changes and modifications can be made according to the technical solutions and technical concepts of the present invention, and all these changes and modifications should belong to the claims of the present invention scope of protection.

Claims

Translated fromChinese

1.一种导光板，其包括一个入光面，一个与入光面相交的出光面及一个与出光面相对的底面，其特征在于，所述入光面包括至少一个贯通出光面与底面的第一凹槽作为第一光接收区域，以及至少一个贯通出光面与底面的第二凹槽作为第二光接收区域，所述第一凹槽与第二凹槽的形状不同，并交替排布在入光面上。1. A light guide plate comprising a light incident surface, a light exit surface intersecting the light incident surface and a bottom surface opposite to the light exit surface, characterized in that the light incident surface includes at least one through light exit surface and the bottom surface The first groove is used as the first light-receiving area, and at least one second groove that penetrates the light-emitting surface and the bottom surface is used as the second light-receiving area. The shapes of the first grooves and the second grooves are different and arranged alternately. on the incident surface.

2.如权利要求1所述的导光板，其特征在于，所述第一凹槽和第二凹槽之间具有一个平面。2. The light guide plate according to claim 1, wherein there is a plane between the first groove and the second groove.

3.如权利要求1所述的导光板，其特征在于，所述每个第一凹槽的两相邻侧分别连接一个第二凹槽，同时，每个第二凹槽的两相邻侧分别连接一个第一凹槽。3. The light guide plate according to claim 1, wherein two adjacent sides of each first groove are respectively connected to a second groove, and at the same time, two adjacent sides of each second groove Connect to a first groove respectively.

4.如权利要求1所述的导光板，其特征在于，所述第一凹槽和第二凹槽相互平行。4. The light guide plate according to claim 1, wherein the first groove and the second groove are parallel to each other.

5.如权利要求1所述的导光板，其特征在于，所述第一凹槽或第二凹槽中设置有多个微棱镜，所述微棱镜均匀分布于第一凹槽或第二凹槽的表面。5. The light guide plate according to claim 1, wherein a plurality of microprisms are arranged in the first groove or the second groove, and the microprisms are evenly distributed in the first groove or the second groove. groove surface.

6.一种背光模组，其包括如权利要求1至5中任意一种导光板，及至少两个光源，所述导光板入光面的第一光接收区域及第二光接收区域分别对应设置有一个光源。6. A backlight module, comprising a light guide plate according to any one of claims 1 to 5, and at least two light sources, the first light-receiving area and the second light-receiving area of the light incident surface of the light guide plate respectively correspond to Set up with a light source.

7.如权利要求6所述的背光模组，其特征在于，所述与第一光接收区域对应设置的光源和与第二光接收区域分别对应设置的光源为同一种光源。7. The backlight module according to claim 6, wherein the light source corresponding to the first light receiving area and the light source respectively corresponding to the second light receiving area are the same light source.

8.如权利要求6所述的背光模组，其特征在于，所述与第一光接收区域对应设置的光源和与第二光接收区域分别对应设置的光源为不同种光源。8 . The backlight module according to claim 6 , wherein the light source corresponding to the first light receiving area and the light source respectively corresponding to the second light receiving area are different light sources.