公开(公告)号：JPH0736038A

公开(公告)日：1995-02-07

申请号：JP20262293

申请日：1993-07-23

Applicant: NISSHA PRINTING

Inventor： FUKUSHIMA YUTAKA ,  YAMAMOTO KUNITOSHI

IPC: F21V8/00 ,  G02B6/00 ,  G02F1/1335 ,  G02F1/13357

Abstract: PURPOSE:To obtain a U-shaped linear light source type surface light emission device whose luminance is high, whose power consumption is low and which is constituted so that the unevenness of the luminance is hardly caused. CONSTITUTION:As for an edge light system surface light emission device obtained by arranging linear light sources on the side surfaces of a transparent light emission plate 1 and providing a light diffusion and transmission part on the back surface of the plate 1; the linear light sources are the U-shaped linear light sources 2 extending over three side surfaces of the plate 1 and a side reflection plate 4 is arranged on one side surface of the plate 1 where the light source 2 is not arranged. Besides, the light diffusion and transmission part is provided so that the area ratio thereof becomes the maximum at a point which exists at the intermediate position of the side surface of the plate 1 on the reflection plate 4 side or at a position on the more center side of the plate 1 than the intermediate position and where the luminance of the linear light source is minimized and becomes smaller as it apart from the point. Then, the parts of the light diffusion and transmission part where the area ratio is identical exist in a circumference state or in a circular-arc state.

公开(公告)号：JPH06194526A

公开(公告)日：1994-07-15

申请号：JP35325292

申请日：1992-12-11

Applicant: NISSHA PRINTING

Inventor： YAMAMOTO KUNITOSHI ,  FUKUSHIMA YUTAKA ,  KIRIMURA HIROSHI

IPC: G02B6/00 ,  F21V8/00 ,  G02F1/1335 ,  G02F1/13357

Abstract: PURPOSE:To provide a surface light-emission device without causing a nonuniform brightness by the light emitted from the bonded part between the photoconductive plate and rear reflecting plate. CONSTITUTION:The pattern of a light diffusing and transmitting part 2 is formed on the rear of a transparent photoconductive plate 1. A light absorbing bonded part 6 obtained by adding a black colorant into an adhesive is formed on the rear reflecting plate 4. The rear reflecting plate 4 is formed on the rear of the photoconductive plate 1, and the photoconductive plate 1 and the rear reflecting plate 4 are bonded surface to surface outside the effective display part 7 of the photoconductive plate 1. A surface diffusing plate 3 is then arranged on the front of the photoconductive plate 1, and the line light source 5 is arranged on the side face of the photoconductive plate 1.

公开(公告)号：JPH0682632A

公开(公告)日：1994-03-25

申请号：JP26083692

申请日：1992-09-02

Applicant: NISSHA PRINTING

Inventor： KIRIMURA HIROSHI ,  YAMAMOTO KUNITOSHI ,  FUKUSHIMA YUTAKA ,  KATSUTA TSUTOMU

IPC: G02B5/02 ,  F21V8/00 ,  G02B6/00 ,  G02F1/1335 ,  G02F1/13357

Abstract: PURPOSE:To provide a surface light-emitting device without the gradation pattern formed on the rear of a light-transmitting plate appearing on the picture even if the plate is made thin, having an easily visible picture and enhanced in the surface light-emitting luminance. CONSTITUTION:A line light source 2 is arranged on the side face of the transparent light-transmitting plate 1 having a light diffusing and transmitting part 3 on its rear to constitute the surface light-emitting device. A light diffusing sheet 7 on the light-transmitting plat side which is made of a polyethylene terephthalate film and of which both sides are coated with a light diffusing substance, is arranged on the surface of the light-transmitting plate, and a light diffusing sheet 8 on the picture side made of a polycarbonate film and having the upper surface of stain-finished pattern is arranged on the sheet 7.

公开(公告)号：JPH05241150A

公开(公告)日：1993-09-21

申请号：JP7899892

申请日：1992-02-28

Applicant: NISSHA PRINTING

Inventor： YAMAMOTO KUNITOSHI ,  FUKUSHIMA YUTAKA ,  KIRIMURA HIROSHI ,  KATSUTA TSUTOMU

IPC: G02B6/00 ,  G02F1/1335 ,  G02F1/13357

Abstract: PURPOSE:To provide the surface light emitting device which corrects the unequal brightness on the surface of a light transmission plate near a linear light source heretofore generated by the darkness at both ends of the linear light source, is small in the size of the device and can emit light uniformly on the surface of the light transmission plate. CONSTITUTION:The linear light source 2 is disposed on one flank of the light transmission plate 1 and the flank reflection plate 4 or the linear light source 2 is disposed on the other flank opposite thereto. A light diffusion and transmission part is formed on the rear surface of the light transmission plate 1 in the following manner: The area rate from the central part of the light transmission plate 1 up to the point where the brightness of the linear light source 2 begins to fall and an arc around the angle part of the light transmission plate 1 as the inner side is drawn is constant in the direction parallel with the pipe axis of the linear light source 2 near the linear light source 2 and the area ratio from the point where the brightness of the linear light source 2 begins to fall up to the end of the light transmission plate 1 increases parabolically.

公开(公告)号：JPH04191704A

公开(公告)日：1992-07-10

申请号：JP32413190

申请日：1990-11-26

Applicant: NISSHA PRINTING

Inventor： FUKUSHIMA YUTAKA ,  YAMAMOTO KUNITOSHI ,  NAKAJIMA KATSUHIKO

IPC: G02B6/00 ,  F21S2/00 ,  F21V8/00 ,  G02B5/02 ,  G02F1/1335 ,  G02F1/13357 ,  G09F9/00 ,  G09F13/04 ,  G09F13/18

Abstract: PURPOSE:To omit a process concerning welding and lamination with a double- side tape by providing a transparent pattern adhesive layer the area of which gradually increases as it recedes in the distance from a light source between a transparent light leading plate and a white scattering reflecting plate. CONSTITUTION:A transparent adhesive layer 5 the area of which gradually increases as it recedes in the distance from a light source 1 is provided between a transparent light leading plate 2 and a white scattering reflecting plate 4. The pattern of the transparent pattern adhesive layer 5 is circular, and its area is changed by changing the measurement of its diameter. The transparent pattern adhesive layer 5 is formed by a printing method or a transcription method such as a gravure printing, an offset printing or a screen printing of a pressure sensitive adhesive made of polyester, transparent acrylic, vinyl and other resin as its main component. In this case, there is no process of welding and others, and it is possible to prevent deterioration of quality without causing flaws.

公开(公告)号：JPH03214191A

公开(公告)日：1991-09-19

申请号：JP930090

申请日：1990-01-18

Applicant: NISSHA PRINTING

Inventor： FUKUSHIMA YUTAKA ,  YAMAMOTO KUNITOSHI

IPC: G02F1/1335 ,  F21V8/00 ,  G02F1/13357 ,  G09F9/00

Abstract: PURPOSE:To obtain the thin, high-brightness plane light emitting device by arranging a light diffusing plate above photoconductors arranged on both sides of a linear light source, and arranging light diffusion transmission parts on the reverse surface of the photoconductors and a light diffuse reflecting plate on the reverse surface where the light diffuse transmission parts are formed. CONSTITUTION:Optical waveguide plates 2 are arranged as the transparent photoconductors on both sides of the linear light source 1, the light diffusing plate 3 is arranged above the optical waveguide plate 2, and a light absorption part 6 which has an area distribution almost proportional to an illuminance distribution is formed on the reverse surface of the light diffusing plate 3. Further, light diffuse transmission parts 5...5 are formed on the reverse surface of the optical waveguide plate 2 while increasing in area with the distances from the light sources 1 and 1, and the light diffuse reflecting plate 7 is arranged on the reverse surface of the optical waveguide plate 2 where the light diffuse transmission parts 5...5 are formed. Consequently, the brightness can be increased and the thickness of the structure is reducible.

公开(公告)号：JPH0389295A

公开(公告)日：1991-04-15

申请号：JP22807489

申请日：1989-08-31

Applicant: NISSHA PRINTING

Inventor： FUKUSHIMA YUTAKA ,  YAMAMOTO KUNITOSHI

IPC: G02F1/1335 ,  F21V8/00 ,  G02F1/13357 ,  G09F9/00 ,  H04N5/66

Abstract: PURPOSE:To obtain a uniform surface light source by providing a mirror reflection part irradiated with a line light source from the side plane of a transparent light guide plate and in which the area of a surface is specified on the back plane of the light guide plate, respectively,and a scattering part. CONSTITUTION:Light irradiated with the line light sources 2, 2 is introduced to the neighborhood of the center of the light guide plate 1 since an incident angle and an angle of reflection in most of the light are reflected equally at the mirror reflection parts 1b... with large areas, while, a few remaining light quantity is reflected on a white scatter reflection parts 1c... with small area, then, they are introduced to the surface side of the light guide plate 1. Also, at a part separated from the light sources 2, 2 most of the light are scattered and reflected on the surface side at the white scatter reflection parts 1c... with large areas, while, a few remaining light quantity are reflected on the mirror reflection parts 1b... with small areas. As a result, it is possible to introduce the light at a part with high intensity of light quantity in the neighborhood of the light sources 2, 2 to a part with low intensity of light quantity separated far from the light sources 2, 2, which forms the uniform surface light sources as a whole.

公开(公告)号：JPS6310181A

公开(公告)日：1988-01-16

申请号：JP15484086

申请日：1986-06-30

Applicant: NISSHA PRINTING

Inventor： YAMAMOTO KUNITOSHI ,  SAGARA MASAMI ,  FUKUSHIMA YUTAKA

IPC: G09F9/00 ,  G02F1/1335 ,  G02F1/13357

公开(公告)号：JPH11186039A

公开(公告)日：1999-07-09

申请号：JP36467697

申请日：1997-12-17

Applicant: NISSHA PRINTING

Inventor： YAMAMOTO KUNITOSHI ,  FUKUI AKIRA

IPC: H05K1/16 ,  H01F17/00 ,  H01F41/04

Abstract: PROBLEM TO BE SOLVED: To reduce eddy current loss of a printed wiring board by forming parallel linear holes through an insulating substrate, and providing a printed coil forming a spiral conductor pattern having an equal width around the part of the insulating substrate between the linear holes, including both surface of the part and internal surfaces of the holes to the substrate together with other circuits. SOLUTION: Parallel linear holes 2 are formed through an insulating substrate 1, and a conductor pattern 3 having an equal width is formed spirally around the part of the substrate 1 between the holes 2, including both surfaces of the part and the internal surfaces of the holes 2. The holes 2 are composed of two or more narrow and long through-holes formed in parallel with each other, and an axis for forming the conductor pattern 3 of a printed coil 4 is formed in a printed wiring board. The conductor pattern 3 can be formed by plating both surfaces of the part between the holes 2 and the internal surfaces of the holes 2 after unwanted parts on the surfaces are coated with a resist, by eliminating the unwanted parts of a conductive film with a laser beam after the film is formed on both surfaces of the part and the internal surfaces of the holes 2, and so on.

公开(公告)号：JPH10340612A

公开(公告)日：1998-12-22

申请号：JP16332697

申请日：1997-06-04

Applicant: NISSHA PRINTING

Inventor： FUKUSHIMA YUTAKA ,  YAMAMOTO KUNITOSHI

IPC: G02B6/00 ,  F21V8/00 ,  G02F1/1335 ,  G02F1/13357 ,  G02F1/1345

Abstract: PROBLEM TO BE SOLVED: To provide a surface light emitter that produces uniform luminance when arranged at the back of a COG type liquid crystal module for the construction of a liquid crystal display. SOLUTION: An edge-light type surface light emitter is for use in a liquid crystal display that includes a COG type liquid crystal module comprising a glass substrate directly mounted with driving LSI chips 6. The surface light emitter comprises a transparent photoconductive plate, a line light source 8 on one side of the photoconductive plate, a light-diffusion transmission part on the back of the photoconductive plate, a back reflecting plate 10 on the back of the transmission part, a band-like photo-absorptive layer 11 formed in the peripheral region of the reflecting plate 10 on the side facing the photoconductive plate at least near to the line light source 8, and a diffusing sheet on the surface of the photoconductive plate. The photo-absorptive layer 11 is widened at its positions near to the LSI chips 6 corresponding to the arrangement pitch thereof.