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CN1371018A - Frame for fixing light guide plate and backlight device thereof - Google Patents

Frame for fixing light guide plate and backlight device thereof Download PDF

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Publication number
CN1371018A
CN1371018A CN 01104698 CN01104698A CN1371018A CN 1371018 A CN1371018 A CN 1371018A CN 01104698 CN01104698 CN 01104698 CN 01104698 A CN01104698 A CN 01104698A CN 1371018 A CN1371018 A CN 1371018A
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groove
location division
light guide
guide plate
imports
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CN 01104698
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CN1144083C (en
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陈豪智
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AUO Corp
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Acer Display Technology Inc
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Abstract

The invention provides a backlight device, which comprises a light guide plate, a reflecting cover, a lamp tube and a frame. The invention is characterized in that the light guide plate also comprises a protruding clamping block which is arranged on the clamping side face of the light guide plate, a first leading-in groove, a second leading-in groove and a positioning part are arranged on one frame of the frame, one end face of the first leading-in groove is aligned with one end face of the positioning part, the first leading-in groove is communicated with the positioning part, one end face of the second leading-in groove is aligned with the other end face of the positioning part, and the second leading-in groove is communicated with the positioning part. When the protrusion fixture block is guided into the positioning portion by the first guiding-in groove and the second guiding-in groove, the frame can fix the light guide plate.

Description

固定导光板的框架及其背光装置Frame for fixing light guide plate and backlight device thereof

本发明涉及一种背光装置(back light)，特别涉及一种改善组装效率、降低导光板损坏率的背光装置的改良结构。The invention relates to a backlight device, in particular to an improved structure of the backlight device which improves assembly efficiency and reduces the damage rate of a light guide plate.

图1A是显示一种公知的液晶显示器的背光装置的立体图。如图所示，公知的背光装置包括一框架10、一导光板40以及一反射罩30。反射罩30用螺丝35与框架10上的螺孔(未标示)结合，而将反射罩30的侧面32固定在框架10上。FIG. 1A is a perspective view showing a known backlight device of a liquid crystal display. As shown in the figure, the known backlight device includes a frame 10 , a light guide plate 40 and a reflector 30 . The reflector 30 is combined with screw holes (not marked) on the frame 10 with screws 35 , so as to fix the side surface 32 of the reflector 30 on the frame 10 .

图1B是显示图1A中背光装置的分解图。如图所示，一反射片20设置在框架10上。然后将导光板40安置在反射片20上，并将导光板40上的一对凸块42安置在框架10的固定槽12中。一灯管34安置在反射罩30内，反射罩30的两侧面32分别用螺丝35和框架10上的螺孔15结合而固定在框架10上。进而将一扩散构件(diffusing means)50更设置在导光板40上，以便完成该背光装置的配置。该扩散构件包括一扩散薄板(diffusing sheet)52、至少一棱镜薄板54以及一保护薄膜56。最后，一显示面板，如一液晶面板60，设置在该背光装置上，用以形成一显示器，例如一液晶显示器。FIG. 1B is an exploded view showing the backlight device in FIG. 1A . As shown in the figure, a reflective sheet 20 is disposed on the frame 10 . Then the light guide plate 40 is placed on the reflection sheet 20 , and the pair of protrusions 42 on the light guide plate 40 are placed in the fixing groove 12 of the frame 10 . A lamp tube 34 is placed in the reflector 30 , and the two side surfaces 32 of the reflector 30 are fixed on the frame 10 by combining screws 35 with the screw holes 15 on the frame 10 . Furthermore, a diffusing means 50 is further disposed on the light guide plate 40 to complete the configuration of the backlight device. The diffusing member includes a diffusing sheet 52 , at least one prism sheet 54 and a protective film 56 . Finally, a display panel, such as a liquid crystal panel 60, is disposed on the backlight device to form a display, such as a liquid crystal display.

由图1B可知，框架10只包含三边框，而且固定槽12的开口向上，因此固定导光板只有三方向受力，只有三边框的框架的强度是不够的，这种设计不能足以保护导光板的。It can be seen from FIG. 1B that the frame 10 only includes three frames, and the opening of the fixing groove 12 is upward, so the fixed light guide plate is only subjected to force in three directions. The strength of the frame with only three frames is not enough, and this design cannot protect the light guide plate. .

再参考图1C，图中显示另一种框架11。为了防止框架变形以及增加框架固定导光板的能力，框架11具有四个边框，而且框架的固定槽13设置在一个边框111中，固定槽13的开口朝向导光板40。在装配背光装置的过程中，将框架11撑开，以利于将导光板40的突出卡块42装入框架11的固定槽13中。这样，如框架11因施力过大而变形，反而更容易破坏导光板40或扩散构件50。Referring again to FIG. 1C, another frame 11 is shown. In order to prevent deformation of the frame and increase the ability of the frame to fix the light guide plate, the frame 11 has four frames, and the frame fixing slot 13 is disposed in one frame 111 , and the opening of the fixing slot 13 faces the light guide plate 40 . During the process of assembling the backlight device, the frame 11 is stretched apart, so as to facilitate fitting the protruding block 42 of the light guide plate 40 into the fixing groove 13 of the frame 11 . In this way, if the frame 11 is deformed due to excessive force, it is easier to damage the light guide plate 40 or the diffusion member 50 .

此外，当背光装置受到振动或颠倒放置时，导光板容易松动或脱离框架，导光板表面也容易刮伤损害，或者导光板与灯管之间的距离容易改变，因而影响光学效果。In addition, when the backlight device is vibrated or placed upside down, the light guide plate is easy to loosen or break away from the frame, the surface of the light guide plate is easily scratched, or the distance between the light guide plate and the lamp tube is easy to change, thus affecting the optical effect.

为了解决上述问题，本发明提出一种液晶显示器的背光装置，其包括：一导光板、一反射罩、一灯管及一框架。导光板具有一底面、一入射侧面及位于该入射侧面两侧的二卡合侧面。反射片设置在导光板的底面侧。反射罩具有朝向上述入射侧面的反射面，及位于上述反射面两侧朝向上述导光板方向延伸的二侧边支撑构件。灯管利用上述二侧边支撑构件设置在反射罩中。In order to solve the above problems, the present invention proposes a backlight device of a liquid crystal display, which includes: a light guide plate, a reflector, a lamp tube and a frame. The light guide plate has a bottom surface, an incident side surface and two engaging side surfaces on both sides of the incident side surface. The reflective sheet is provided on the bottom side of the light guide plate. The reflective cover has a reflective surface facing the incident side, and two side support members located on both sides of the reflective surface and extending toward the light guide plate. The lamp tube is arranged in the reflector by the above-mentioned two side support members.

本发明的特征在于，导光板还包括至少两个突出卡块，它们分别设置在上述导光板的二卡合侧面。此外，框架的一对相对边框上分别设有一第一导入凹槽、一第二导入凹槽及一定位部，第一导入凹槽的一端面与定位部的一端面对齐，而且第一导入凹槽与定位部连通，第二导入凹槽的一端面与定位部的另一端面对齐，而且第二导入凹槽与定位部连通。上述突出卡块可利用上述第一导入凹槽与第二导入凹槽引导入上述定位部内，以固定上述导光板。The feature of the present invention is that the light guide plate further includes at least two protruding blocks, which are respectively arranged on the two engaging side surfaces of the light guide plate. In addition, a pair of opposite frames of the frame are respectively provided with a first introduction groove, a second introduction groove and a positioning part, an end surface of the first introduction groove is aligned with an end surface of the positioning part, and the first introduction groove The groove communicates with the positioning part, one end surface of the second introducing groove is aligned with the other end surface of the positioning part, and the second introducing groove communicates with the positioning part. The above-mentioned protruding block can be guided into the above-mentioned positioning portion by using the above-mentioned first introducing groove and the second introducing groove to fix the above-mentioned light guide plate.

上述框架的一对相对边框分别包括一第一定位装置和一第二定位装置。上述第一定位装置具有第一导入凹槽和第一定位柱，上述第二定位装置具有第二导入凹槽和第二定位柱。其中，上述第一导入凹槽的开口至上述第一定位柱的距离，与上述第二导入凹槽的开口至上述第二定位柱的距离和，大于边框的高度。The pair of opposite frames of the above frame respectively include a first positioning device and a second positioning device. The first positioning device has a first introduction groove and a first positioning post, and the second positioning device has a second introduction groove and a second positioning post. Wherein, the sum of the distance from the opening of the first introduction groove to the first positioning post and the distance from the opening of the second introduction groove to the second positioning post is greater than the height of the frame.

另一方面，本发明提供的背光装置，适用于一液晶显示器。该背光装置包括；一导光板，其具有一卡合侧面；一突出卡块，其形成于该卡合侧面上；以及一定位边框，该定位边框具有一边框高度H。上述定位边框在面向该导光板侧具有一第一导入凹槽，该第一导入凹槽具有一第一高度h1，第一宽度d1；一第二导入凹槽，该第二导入凹槽具有一第二高度h2，第二宽度d2；以及一定位部，该定位部具有一第三高度为h3，第三宽度D。第一导入凹槽的第一凹槽端面与定位部的第一端面对齐，第二导入凹槽的第二凹槽端面与定位部的第二端面对齐，且第一导入凹槽、第二导入凹槽和定位部三者相互连通。On the other hand, the backlight device provided by the present invention is suitable for a liquid crystal display. The backlight device includes; a light guide plate, which has a locking side; a protruding block, which is formed on the locking side; and a positioning frame, which has a frame height H. The above positioning frame has a first introduction groove on the side facing the light guide plate, the first introduction groove has a first height h 1 , a first width d 1 ; a second introduction groove, the second introduction groove It has a second height h 2 and a second width d 2 ; and a positioning portion, the positioning portion has a third height h 3 and a third width D. The first groove end surface of the first introduction groove is aligned with the first end surface of the positioning part, the second groove end surface of the second introduction groove is aligned with the second end surface of the positioning part, and the first introduction groove, the second groove end surface The two leading grooves and the positioning part are in communication with each other.

其中，第一导入凹槽宽度d1与第二导入凹槽宽度d2之和，大于或等于定位部宽度D(d1+d2≥D)，第一导入凹槽高度h1、第二导入凹槽高度h2和定位部高度h3之和，小于或等于定位边框的边框高度H(h1+h2+h3≤H)。上述突出卡块可借助第一导入凹槽和第二导入凹槽引导入定位部内，用以固定导光板。此外，突出卡块具有一第四高度h4以及一第四宽度d4，而突出卡块宽度小于或等于定位部宽度D(d4≤D)，突出卡块高度小于或等于定位部的高度h3(h4≤h3)。导光板具有一导光板高度h5，突出卡块高度小于或等于导光板高度(h4≤h5)。Wherein, the sum of the first introduction groove width d 1 and the second introduction groove width d 2 is greater than or equal to the positioning part width D (d 1 +d 2 ≥ D), the first introduction groove height h 1 , the second The sum of the height h 2 of the introduction groove and the height h 3 of the positioning part is less than or equal to the frame height H of the positioning frame (h 1 +h 2 +h 3 ≤ H). The protruding block can be guided into the positioning portion by means of the first guide groove and the second guide groove to fix the light guide plate. In addition, the protruding block has a fourth height h 4 and a fourth width d 4 , and the width of the protruding block is less than or equal to the width D of the positioning part (d 4 ≤ D), and the height of the protruding block is less than or equal to the height of the positioning part h 3 (h 4 ≤ h 3 ). The light guide plate has a height h 5 of the light guide plate, and the height of the protruding block is less than or equal to the height of the light guide plate (h 4 ≤ h 5 ).

本发明的一优点是，由在导光板设置在框架的定位部内，使得导光板不易松动或位移，降低导光板损坏率。An advantage of the present invention is that since the light guide plate is arranged in the positioning portion of the frame, the light guide plate is not easy to loosen or shift, and the damage rate of the light guide plate is reduced.

图1A显示一种公知的液晶显示器的背光装置的立体图；FIG. 1A shows a perspective view of a known backlight device of a liquid crystal display;

图1B显示一种公知的液晶显示器的背光装置的分解图；FIG. 1B shows an exploded view of a known backlight device of a liquid crystal display;

图1C显示一种公知背光装置的框架的示意图；FIG. 1C shows a schematic diagram of a frame of a known backlight device;

图2显示本发明第一实施例的背光装置的立体分解图；FIG. 2 shows a three-dimensional exploded view of the backlight device of the first embodiment of the present invention;

图3A至图3C显示本发明的背光装置的定位边框的侧视图；以及3A to 3C show side views of the positioning frame of the backlight device of the present invention; and

图4A至4C显示导光板与框架的组装图。4A to 4C show assembly views of the light guide plate and the frame.

图2表示本发明的液晶显示器的背光装置的立体分解图。如图2所示，本发明的背光装置包括一导光板100、一反射片200、一反射罩300、一灯管340以及一框架700。FIG. 2 shows an exploded perspective view of the backlight device of the liquid crystal display of the present invention. As shown in FIG. 2 , the backlight device of the present invention includes a light guide plate 100 , a reflector 200 , a reflector 300 , a lamp 340 and a frame 700 .

导光板100具有一导光面110、一底面120、一光线入射侧面(未显示)及位于该入射侧面两侧的二卡合侧面130。导光板100的导光面110是靠近一液晶面板60的光的入射面62，将导光板100的底面120设置在反射片200上方且靠近反射片200。导光板100还包括至少两个突出卡块140，它们分别设置在上述导光板100的二卡合侧面130。The light guide plate 100 has a light guide surface 110 , a bottom surface 120 , a light incident side surface (not shown), and two engaging side surfaces 130 located on both sides of the light incident side surface. The light guide surface 110 of the light guide plate 100 is close to the light incident surface 62 of a liquid crystal panel 60 , and the bottom surface 120 of the light guide plate 100 is disposed above the reflection sheet 200 and close to the reflection sheet 200 . The light guide plate 100 further includes at least two protruding blocks 140 , which are respectively disposed on the two engaging side surfaces 130 of the light guide plate 100 .

反射罩300具有朝向上述入射侧面的反射面310，以及分别自上述反射面310两侧朝向上述导光板二卡合侧面130方向延伸的二侧边支撑构件320，而灯管340则固定设置在反射罩300中。反射罩300接纳灯管340，并利用反射罩300内的反射面310，将灯管340发散的光反射回导光板100。此外，穿透导光板100的底面120的光借助反射片200而再次反射进入导光板100内。The reflector 300 has a reflective surface 310 facing the incident side, and two side support members 320 respectively extending from both sides of the reflective surface 310 toward the two engaging side surfaces 130 of the light guide plate, and the lamp tube 340 is fixedly arranged on the reflector. Cover 300. The reflector 300 receives the lamp tube 340 , and uses the reflection surface 310 inside the reflector 300 to reflect the light emitted by the lamp tube 340 back to the light guide plate 100 . In addition, the light passing through the bottom surface 120 of the light guide plate 100 is reflected again into the light guide plate 100 by the reflective sheet 200 .

框架700具有一对定位边框720和一对连接边框710，其中每一连接边框710的两端分别连接二定位边框720。每一定位边框720在面向导光板100的一侧720a上具有一第一导入凹槽730、一第二导入凹槽750和一定位部740(如图3A所示)。定位部设置在定位边框的内侧，用以固定导光板100，第一导入凹槽具有一端面，其与定位部的一端面对齐，且设置在定位边框的内侧并与定位部连通，第二导入凹槽具有一端面，其与定位部的另一端面对齐，且设置在定位边框的内侧并与上述定位部连通。The frame 700 has a pair of positioning frames 720 and a pair of connecting frames 710 , wherein two ends of each connecting frame 710 are respectively connected to two positioning frames 720 . Each positioning frame 720 has a first guiding groove 730 , a second guiding groove 750 and a positioning portion 740 on a side 720 a facing the light guide plate 100 (as shown in FIG. 3A ). The positioning part is arranged on the inner side of the positioning frame to fix the light guide plate 100. The first introduction groove has an end face, which is aligned with one end face of the positioning part, and is arranged on the inner side of the positioning frame and communicates with the positioning part. The introduction groove has an end surface, which is aligned with the other end surface of the positioning part, is arranged inside the positioning frame and communicates with the positioning part.

图3A与图3B是本发明的定位边框两导入凹槽端面距离尺寸的侧视图。第一种尺寸关系如图3A所示，第一导入凹槽730的两端面730a与730b的距离d1，和第二导入凹槽750的两端面750a与750b的距离d2之和，等于定位部740的两端面740a与740b的距离D，即d1+d2＝D。第二种尺寸关系则如图3B所示，第一导入凹槽730的两端面730a与730b的距离d1，和第二导入凹槽750的两端面750a与750b的距离d2之和，大于定位部740的两端740a与740b的距离D，即d1+d2＞D。Fig. 3A and Fig. 3B are side views of the distance dimension between the two guide groove end faces of the positioning frame of the present invention. The first dimensional relationship is shown in FIG. 3A , the sum of the distance d 1 between the two end surfaces 730a and 730b of the first introduction groove 730 and the distance d 2 between the two end surfaces 750a and 750b of the second introduction groove 750 is equal to the positioning The distance D between the two end faces 740 a and 740 b of the portion 740 is d 1 +d 2 =D. The second dimensional relationship is shown in FIG. 3B , the sum of the distance d 1 between the two end surfaces 730a and 730b of the first introduction groove 730 and the distance d 2 between the two end surfaces 750a and 750b of the second introduction groove 750 is greater than The distance D between the two ends 740 a and 740 b of the positioning portion 740 , that is, d 1 +d 2 >D.

如图3A和图3B所示，第一导入凹槽730的两端面730a与730b的距离d1，和第二导入凹槽750的两端面750a与750b的距离d2之和，需大于或等于定位部740的两端面740a与740b的距离，即d1+d2≥D。As shown in Figure 3A and Figure 3B, the sum of the distance d 1 between the two end surfaces 730a and 730b of the first introduction groove 730 and the distance d 2 between the two end surfaces 750a and 750b of the second introduction groove 750 must be greater than or equal to The distance between the two end surfaces 740 a and 740 b of the positioning portion 740 , that is, d 1 +d 2 ≥D.

参考图3C，图3C是本发明的定位边框720两导入凹槽高度尺寸的侧视图。其中，每一定位边框720的内侧具有一第一定位装置760和一第二定位装置770。第一定位装置760具有第一导入凹槽730和第一定位柱761，而第二定位装置770具有第二导入凹槽750和第二定位柱771。第一导入凹槽的高度h1与第一定位柱高度相等，第二导入凹槽的高度h2与第二定位柱高度相等。定位部740具有一高度h3，定位边框720具有一高度H。且第一定位柱761的高度h1、第二定位柱771的高度h2与  定位部740的高度h3三者之和，小于或等于定位边框720的高度H，即h1+h2+h3≤H。此外，导光板的突出卡块140具有一高度h4以及一宽度d4，该突出卡块140的宽度小于或等于定位部宽度D，即d4≤D，该突出卡块140的高度小于或等于定位部的高度，即h4≤h3。另外，导光板100具有一导光板高度h5，而突出卡块140的高度小于或等于该导光板的高度，即h4≤h5。也就是说，第一定位柱761的高度h1、第二定位柱771的高度h2与突出卡块140的高度h4三者之和，小于或等于定位边框720的高度H，即h1+h2+h4≤H。Referring to FIG. 3C , FIG. 3C is a side view of the height dimensions of the two guide grooves of the positioning frame 720 of the present invention. Wherein, each positioning frame 720 has a first positioning device 760 and a second positioning device 770 inside. The first positioning device 760 has a first guiding groove 730 and a first positioning post 761 , while the second positioning device 770 has a second guiding groove 750 and a second positioning post 771 . The height h1 of the first introduction groove is equal to the height of the first positioning post, and the height h2 of the second introduction groove is equal to the height of the second positioning post. The positioning portion 740 has a height h 3 , and the positioning frame 720 has a height H. As shown in FIG. And the sum of the height h 1 of the first positioning column 761, the height h 2 of the second positioning column 771 and the height h 3 of the positioning part 740 is less than or equal to the height H of the positioning frame 720, namely h 1 + h 2 + h 3 ≤ H. In addition, the protruding block 140 of the light guide plate has a height h 4 and a width d 4 . It is equal to the height of the positioning part, that is, h 4 ≤ h 3 . In addition, the light guide plate 100 has a light guide plate height h 5 , and the height of the protruding block 140 is less than or equal to the height of the light guide plate, ie h 4 ≤ h 5 . That is to say, the sum of the height h 1 of the first positioning post 761 , the height h 2 of the second positioning post 771 and the height h 4 of the protruding block 140 is less than or equal to the height H of the positioning frame 720 , namely h 1 +h 2 +h4≤H.

因此对于一具有D尺寸的突出卡块150，如上述各机构元件的尺寸符合(1)d1+d2≥D和(2)h1+h2+h3≤H这两个尺寸关系，则可以确保导光板100可以顺利地在定位边框720中旋转，而且与边框720成零夹角即平行地连结在一起。Therefore, for a protruding block 150 with a dimension D, if the dimensions of the above-mentioned mechanism elements meet the two dimensional relationships of (1) d 1 +d 2 ≥D and (2) h 1 +h 2 +h 3 ≤H, Then it can be ensured that the light guide plate 100 can rotate smoothly in the positioning frame 720 , and is connected together with the frame 720 at zero angle, that is, in parallel.

图4A至图4C显示导光板与框架组合过程的立体图。如图4A所示，导光板100的平面与框架720边的平面夹角为θ，且导光板100的突出卡块150对准定位边框720的第一导入凹槽730。如图4B所示，导光板100的突出卡块150自第一导入凹槽730进入，同时占据第一导入凹槽730、第二导入凹槽740及定位部750的部分空间。最后，如图4C所示，旋转导光板100，使导光板100与框架720平行即夹角为0，进而使突出卡块150固定在定位部740内。这样就完成了导光板100与框架700的组合。4A to 4C are perspective views showing the assembly process of the light guide plate and the frame. As shown in FIG. 4A , the angle between the plane of the light guide plate 100 and the plane of the frame 720 is θ, and the protruding block 150 of the light guide plate 100 is aligned with the first guide groove 730 of the positioning frame 720 . As shown in FIG. 4B , the protruding block 150 of the light guide plate 100 enters from the first introduction groove 730 and occupies part of the space of the first introduction groove 730 , the second introduction groove 740 and the positioning portion 750 . Finally, as shown in FIG. 4C , the light guide plate 100 is rotated so that the light guide plate 100 is parallel to the frame 720 , that is, the angle between the light guide plate 100 and the frame 720 is 0, and then the protruding block 150 is fixed in the positioning portion 740 . In this way, the combination of the light guide plate 100 and the frame 700 is completed.

此外，导光板的突出卡块也可反向自第二导入凹槽进入，同时占据第一导入凹槽、第二导入凹槽与定位部的部分空间。最后，完成导光板与框架的组合。In addition, the protruding block of the light guide plate can also enter from the second introduction groove in reverse, while occupying part of the space of the first introduction groove, the second introduction groove and the positioning part. Finally, the combination of the light guide plate and the frame is completed.

此外，当第一导入凹槽730的两端面730a与730b的距离d1，与第二导入凹槽750的两端面750a与750b的距离d2之和，略大于定位部740的两端740a与740b的距离D，即d1+d2＞D时；则导光板100与框架720之间将存在些间隙，但导光板平面与框架边的共平面的倾斜角度θ不很严格，在于可增加装配效率。In addition, the sum of the distance d 1 between the two end surfaces 730a and 730b of the first introduction groove 730 and the distance d 2 between the two end surfaces 750a and 750b of the second introduction groove 750 is slightly greater than the distance between the two ends 740a and the two ends 740a of the positioning part 740 . The distance D of 740b, that is, when d 1 +d 2 >D; there will be some gaps between the light guide plate 100 and the frame 720, but the inclination angle θ of the coplanar plane of the light guide plate and the frame side is not very strict, because it can increase Assembly efficiency.

再有，一扩散构件(diffusing means)设置在导光板上，其中依序分别包括一扩散薄板(diffusing sheet)、一棱镜薄板及一保护薄膜。反射罩可与框架或导光板结合。最后，一液晶面板设置在扩散构件上，形成一液晶显示器。Furthermore, a diffusing means is arranged on the light guide plate, which sequentially includes a diffusing sheet, a prism sheet and a protective film respectively. The reflector can be combined with the frame or the light guide plate. Finally, a liquid crystal panel is arranged on the diffusion member to form a liquid crystal display.

本发明中，可以使用具有四个边框的框架，包括二定位边框以及二连接边框，这样可增加框架的结构强度。In the present invention, a frame with four frames can be used, including two positioning frames and two connecting frames, which can increase the structural strength of the frame.

虽然本发明已以一较佳实施例披露，但并非用以限定本发明，任何本领域的普通技术人员，在不脱离本发明的实质和范围条件下，可作些许更动与润饰，因此本发明的保护范围当以后附的权利要求书所界定。Although the present invention has been disclosed with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes and modifications without departing from the essence and scope of the present invention. Therefore, the present invention The scope of protection of the invention should be defined by the appended claims.

Claims (16)

1. the framework of a lightguide plate fixing comprises:
One location frame, described location scuncheon has a location division, one first respectively and imports groove and one second importing groove, the described first importing groove has an end face and aligns with an end face of described location division, and be communicated with described location division, and the described second importing groove has an end face and aligns with the other end of described location division, and is communicated with described location division.
2. framework as claimed in claim 1, wherein said first imports the distance of the both ends of the surface of groove, with described second import groove both ends of the surface distance and, more than or equal to the distance of described location division both ends of the surface.
3. framework as claimed in claim 2, wherein said first imports the distance of the both ends of the surface of groove, less than the distance of the both ends of the surface of described location division, and described second distance that imports the both ends of the surface of groove, less than the distance of the both ends of the surface of described location division.
4. the framework of a lightguide plate fixing, it has a plurality of frames and links to each other, and wherein at least two relative described scuncheons comprise respectively:
One first locating device, it has one first and imports groove and one first reference column; And
One second locating device, it has one second and imports groove and one second reference column, the wherein said second importing groove and described first imports groove and is communicated with formation one location division, and described first imports the distance of the opening of groove to described first reference column, with described second opening that imports groove to the distance of described second reference column and, greater than the height of frame.
5. framework as claimed in claim 4, the length of the length of wherein said first reference column and second reference column and, be less than or equal to described location division both ends of the surface distance.
6. back lighting device, it is useful in LCD, comprising:
One light guide plate, the two engaging sides that it has a bottom surface, a light incident side and is positioned at both sides, described light incident side have an outstanding fixture block respectively on described engaging side; And
One framework, it has a plurality of frames and links to each other, wherein at least two relative described scuncheons have one first importing groove, one second an importing groove and a location division respectively, described first end face that imports groove aligns with an end face of described location division and is communicated with, and described second end face that imports groove aligns with the other end of described location division and is communicated with;
Described outstanding fixture block can import groove guides by the described first importing groove and second goes in the described location division, with fixing described light guide plate.
7. back lighting device as claimed in claim 6, wherein said first imports the distance of groove both ends of the surface, with described second import the groove both ends of the surface distance and, more than or equal to the distance of described location division both ends of the surface.
8. back lighting device as claimed in claim 6, wherein said first imports the distance of the both ends of the surface of groove, less than the distance of the both ends of the surface of described location division, and described second distance that imports the both ends of the surface of groove, less than the distance of the both ends of the surface of described location division.
9. back lighting device as claimed in claim 6, wherein said scuncheon has one first locating device and one second locating device respectively, described first locating device comprises that first imports groove and one first reference column, described second locating device comprises that second imports groove and one second reference column, described first imports the distance of the opening of groove to described first reference column, with described second opening that imports groove to the distance of described second reference column and, greater than the height of this location frame.
10. back lighting device as claimed in claim 9, the length of the length of wherein said first reference column and second reference column and, be less than or equal to the distance of described location division both ends of the surface.
11. back lighting device as claimed in claim 6, the height of wherein said outstanding fixture block is less than or equal to the height of described light guide plate.
12. back lighting device as claimed in claim 6 more comprises:
One reflex housing, it has towards a reflecting surface of described light incident side and is positioned at the dual side-edge supporting member that extend towards described light guide plate direction described reflecting surface both sides;
One fluorescent tube, it utilizes described dual side-edge supporting member to be arranged in the described reflex housing;
One reflector plate, it is arranged on described bottom surface side; And
One pervasion component, it is arranged between a liquid crystal panel and the described light guide plate.
13. back lighting device as claimed in claim 12, wherein said pervasion component comprise a protective film, a prismatic thin plate, a diffusion thin plate successively, wherein said protective film is arranged on described light guide plate top.
14. a back lighting device, it is applicable to LCD, comprising:
One light guide plate, it has an engaging side;
One outstanding fixture block, it is formed on the described engaging side; And
One location frame, this location frame has a frame height H, and described location frame is towards described light guide plate side, and it has:
One first imports groove, and this first importing groove has one first height h 1, the first width d 1
One second imports groove, and this second importing groove has one second height h 2, the second width d 2And
One location division, this location division have one the 3rd and highly are h 3, the 3rd width D;
The described first first groove end face that imports groove aligns with first end face of described location division, the described second second groove end face that imports groove aligns with second end face of described location division, and this first importing groove, this second importing groove and this location division three are interconnected;
First imports recess width d 1With the second importing recess width d 2Sum is more than or equal to location division width D (d 1+ d 2〉=D), and the first importing groove height h 1, second import groove height h 2With location division height h 3Sum is less than or equal to the frame height H (h that locatees frame 1+ h 2+ h 3≤ H);
Described outstanding fixture block can utilize the described first importing groove and the second importing groove guides to go in the described location division, with fixing described light guide plate.
15. back lighting device as claimed in claim 14, wherein outstanding fixture block has one the 4th height h 4And one the 4th width d 4, the width of outstanding fixture block is less than or equal to location division width D (d 4≤ D), the height of outstanding fixture block is less than or equal to the height h of location division 3(h 4≤ h 3).
16. back lighting device as claimed in claim 15, wherein light guide plate has a light guide plate height h 5, the height of outstanding fixture block is less than or equal to light guide plate height (h 4≤ h 5).
CNB011046988A 2001-02-20 2001-02-20 Frame for fixing light guide plate and backlight device thereof Expired - Lifetime CN1144083C (en)

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