公开(公告)号：US6079840A

公开(公告)日：2000-06-27

申请号：US953553

申请日：1997-10-17

申请人： Toshiaki Ono ,  Manabu Takashio ,  Nobuhiro Arai

发明人： Toshiaki Ono ,  Manabu Takashio ,  Nobuhiro Arai

IPC分类号： G02B6/00 ,  F21V8/00 ,  G02F1/1335 ,  G02F1/13357 ,  F21V7/04

CPC分类号： G02B6/0055

摘要： There is provided a surface light source device of side light type, which is not reduced in efficiency of illumination light utilization, even if the surface light source device is subjected to fringing such as to trim a luminant portion. For instance, a light shielding layer formed by coating black ink 21A, which absorbs illumination light, by means of printing is provided on a protection sheet 21 arranged as the outermost emission-side additional sheet. The light shielding layer absorbs and shields illumination light L1 tending to be transmitted through a peripheral edge portion of the protection sheet 12, and as a result, provides fringing. A reflective surface is formed by applying a silver tape 21B or the like to a surface facing the light guide plate 6. Since illumination light reflected by the silver tape 21B is used again inside the light guide plate 6, it is possible to avoid a reduction in efficiency of light utilization. The reflective layer may be narrower or wider than the light shielding layer, or may be equal in width to the light shielding layer at need. The reflective surface and the light shielding layer may be also formed on other components.

摘要翻译： 提供了一种侧光型的面光源装置，即使表面光源装置受到诸如修整发光体部分的边缘的影响，也不会降低照明光利用的效率。 例如，在作为最外侧发光侧附加片配置的保护片21上设置通过涂布通过印刷吸收照明光的黑色墨21A形成的遮光层。 遮光层吸收并遮蔽趋向于透过保护片12的周边部分的照明光L1，结果提供了边缘。 通过将银带21B等施加到与导光板6相对的表面来形成反射表面。由于在导光板6内再次使用由银带21B反射的照明光，因此可以避免减少 在光利用效率上。 反射层可以比遮光层更窄或更宽，或者在需要时可以与遮光层的宽度相等。 反射表面和遮光层也可以形成在其它部件上。

公开(公告)号：US5957561A

公开(公告)日：1999-09-28

申请号：US944551

申请日：1997-10-07

申请人： Toshiaki Ono ,  Manabu Takashio ,  Tsuyoshi Ishikawa

发明人： Toshiaki Ono ,  Manabu Takashio ,  Tsuyoshi Ishikawa

IPC分类号： G02B6/00 ,  F21V8/00 ,  G02F1/1335 ,  G02F1/13357 ,  F21V13/12

CPC分类号： G02B6/0055 ,  G02B6/0061 ,  G02B6/005

摘要： In a surface light source device of side light type and a display employing the same, illumination light of high grade is allowed to emit by reducing irregularities in luminance caused along a muntin of a support member to support components such as a light guide plate 2 and a reflection sheet 21. A light quantity correction surface 21A is formed between the reflection member 21 and a support member 11. Otherwise, a member providing the light quantity correction surface is arranged on the rear of the support member. A quantity of illumination light in a portion of a muntin 11B of the support member 11 is made approximately equal to that in a portion of an aperture 11C, and the irregularities in luminance caused correspondingly to the muntin are reduced. The light quantity correction surface may be provided by a surface of the muntin itself or ink coated on the muntin by means of printing. Further, a member providing the light quantity correction surface may be arranged between the muntin and the reflection member 21. This member may be an additional reflection sheet.

摘要翻译： 在侧光型的面光源装置和使用其的显示器中，通过减少沿着支撑构件的柔性引起的亮度的不规则性，允许高等级的照明光发射，以支撑诸如导光板2和 反射片21.在反射构件21和支撑构件11之间形成有光量校正表面21A。另外，提供光量校正表面的构件设置在支撑构件的后部。 支撑构件11的一部分的照明光量大致等于孔11C的一部分，并且相应地降低了与亮度相关的亮度不均匀性。 光量校正表面可以通过本身的表面或通过印刷涂覆在柔版上的油墨来提供。 此外，提供光量校正表面的构件可以布置在柔版和反射构件21之间。该构件可以是附加的反射片。

公开(公告)号：US6123430A

公开(公告)日：2000-09-26

申请号：US940374

申请日：1997-09-30

申请人： Toshiaki Ono ,  Shingo Ohkawa ,  Manabu Takashio

发明人： Toshiaki Ono ,  Shingo Ohkawa ,  Manabu Takashio

IPC分类号： G02B6/00 ,  F21V8/00 ,  G02F1/1335 ,  G02F1/13357 ,  F21V7/04

CPC分类号： G02B6/0055 ,  G02B6/0031 ,  G02B6/005

摘要： Local irregularities in luminance are removed from a surface light source device of side light type 20 applied to a liquid crystal display or the like. In assembly, a reflection sheet 4 and a primary light source 23 are mounted on a light guide plate 2, and these components are housed at a predetermined position in a frame 21. The primary light source 23 has a fluorescent lamp 25 and a reflector 26, and supplied illumination light to an end surface (an incidence surface) 2A of the light guide plate 2. The reflector 26 presses the reflection sheet 4 against the light guide plate 2 and supports the reflection sheet. A support member 24 has a claw 24C engageable with a claw 21C of the frame 21. A light absorbable layer 27 is formed on an end portion of the reflection sheet 4. Since the reflection sheet 4 projects toward the primary light source and is pressed against the light guide plate 2 by the reflector 26, there is less quantity of light actually incident onto a lower edge ED, even if the illumination light makes a propagation toward the edge ED. Thus, it is possible to prevent the phenomenon that the edge ED on the side of the reflection sheet 4 is brightly illuminated with illumination light from occurring in the vicinity of the end surface (the incidence surface) 2A of the light guide plate 2 to which the light is supplied.

摘要翻译： 从应用于液晶显示器等的侧光型20的面光源装置中去除亮度的局部不规则。 在组装中，反射片4和初级光源23安装在导光板2上，这些部件容纳在框架21中的预定位置。初级光源23具有荧光灯25和反射器26 并且向导光板2的端面（入射面）2A供给照明光。反射体26将反射片4按压在导光板2上并支撑反射片。 支撑构件24具有可与框架21的爪21C接合的爪24C。在反射片4的端部上形成有光吸收层27.由于反射片4向主光源突出并被压靠 通过反射器26导光板2，即使照明光朝向边缘ED传播，实际入射到下边缘ED上的光量也较少。 因此，可以防止发生在导光板2的端面（入射面）2A附近的照明光使反射片4一侧的边缘ED发光的现象， 灯被供应。