公开(公告)号：JP2001313163A

公开(公告)日：2001-11-09

申请号：JP2000383803

申请日：2000-12-18

Applicant: SEIKO EPSON CORP

Inventor： FUNAMOTO TATSUAKI ,  YOKOYAMA OSAMU

IPC: H05B33/00 ,  F21V8/00 ,  F21Y105/00 ,  G09F9/00 ,  H01H9/16 ,  H01H13/02 ,  H01H13/70 ,  H01L51/50 ,  H04M1/22 ,  H05B33/14

Abstract: PROBLEM TO BE SOLVED: To realize a composite lighting device with uniform brightness which lights input buttons or the like by the light from an end surface of a back light forming an organic EL element, at low cost. SOLUTION: At the lighting device having a transparent substrate 1 on a main surface of which, at least a transparent electrode film 21, a luminous layer 22, and a reflection electrode film 23 are formed, input buttons 6 embedded in a light guide 5 are lighted by arranging a liquid crystal display 3 adjacent to the other main surface of the substrate 1, and arranging the light conducting body 5 adjacent to an end surface 4 side.

公开(公告)号：JP2000241722A

公开(公告)日：2000-09-08

申请号：JP4444599

申请日：1999-02-23

Applicant: SEIKO EPSON CORP

Inventor： NISHIKAWA HISAO ,  YOKOYAMA OSAMU

IPC: G02B26/08

Abstract: PROBLEM TO BE SOLVED: To efficiently use reflected light. SOLUTION: This method includes a first process to fill a recess 12 of a master plate 10 with a conductive material 14 to form a pixel electrode layer 18, a second process to form a piezoelectric layer 20 on the pixel electrode layer 18, a third process to form a common electrode layer 22 on the piezoelectric layer 20, a fourth process to peel the layers from the master plate 10, and a fifth process to mount the piezoelectric layer 20 with the pixel electrode layer 18 and the common electrode layer 22 on both surfaces on a controlling substrate to electrically connect the pixel electrode layer 18 and the controlling part by preparing the controlling substrate on which the controlling part is formed.

公开(公告)号：JP2000066205A

公开(公告)日：2000-03-03

申请号：JP24807999

申请日：1999-09-01

Applicant: SEIKO EPSON CORP

Inventor： YOKOYAMA OSAMU ,  MIYASHITA SATORU ,  SHIMODA TATSUYA

IPC: H04N5/74 ,  G02F1/13 ,  G02F1/1335 ,  G02F1/13357 ,  H04N9/31

Abstract: PROBLEM TO BE SOLVED: To permit miniaturization and the projection of a bright image with low voltage by providing the device with a liquid crystal display element including a specific org. electric field light emitting element and a transmission type liquid crystal panel for controlling the transmission of the light emitted from the surface of this org. electric field light emitting element. SOLUTION: The liquid crystal display element 1a is housed in the projection lens 30 and a casing 40. The projection lens 30 forms the image emitted from the liquid crystal display element 1a on a screen 50. The liquid crystal display element 1a has the org. electric field light emitting element 10 and the transmission type liquid crystal panel 20 and is so constituted that light modulation to allow the transmission of the light from the org. electric field light emitting element 10 or not to allow the transmission thereof by a change in the voltage of the control signal supplied to a drive circuit is made possible. The planar org. electric field light emitting element 10, which allows low-voltage driving and is large in light quantity, is used. As a result, the small-sized projection type liquid crystal display device capable of projecting the image brighter than heretofore may be obtd.

公开(公告)号：JP2000056410A

公开(公告)日：2000-02-25

申请号：JP15876199

申请日：1999-06-04

Applicant: SEIKO EPSON CORP

Inventor： YOKOYAMA OSAMU ,  SHIMODA TATSUYA ,  MIYASHITA SATORU

IPC: G09F9/30 ,  G02F1/1335 ,  G02F1/13357 ,  G03B33/12 ,  G09F9/00 ,  H01L51/50 ,  H05B33/12 ,  H05B33/14 ,  H05B33/22 ,  H05B33/24

Abstract: PROBLEM TO BE SOLVED: To miniaturize a light source device used for a display device where the picture of a liquid crystal display element is enlarged and displayed and to miniaturize the display device. SOLUTION: A red light source constituted by arraying LEDs 102R emitting a red light beam, a green light source constituted by arraying LEDs 102G emitting a green light beam and a blue light source constituted by arraying LEDs 102B emitting a blue light beam are arranged around a dichroic prism 101. The light beams emitted from the respective light sources are synthesized by the prism 101 and become a white light beam. A projection type liquid crystal display device is constituted by illuminating a liquid crystal display element by the light source device constituted in such a way.

公开(公告)号：JPH1186620A

公开(公告)日：1999-03-30

申请号：JP15586398

申请日：1998-06-04

Applicant: SEIKO EPSON CORP

Inventor： FUNAMOTO TATSUAKI ,  YOKOYAMA OSAMU

IPC: G02B6/00 ,  F21V8/00 ,  G02F1/1335 ,  G02F1/13357 ,  G09F13/18

Abstract: PROBLEM TO BE SOLVED: To provide a fore-placed type surface lighting system of low power consumption superior in visibility, both when lighting is on and when it is off, capable of illuminating a curved surface and a three-dimensional object, and also superior in terms of artistic design. SOLUTION: A curved surface is provided within a range of conditions that a light beam 9 entering from an illuminant 2 via an end face 14 of a light guide plate 1 can be guided within the light guide plate 1. The light beam 9, when it reaches projecting shapes 11 provided on a plate surface 15, goes out of the light guide plate 1 and is irradiated to an illuminated body 3. By this constitution, the light guide plate 1 has functions of projecting light to the illuminated body 3 and of transmitting light reflected by the illuminated body 3 substantially without dispersion.

公开(公告)号：JPH10142600A

公开(公告)日：1998-05-29

申请号：JP29897796

申请日：1996-11-11

Applicant: SEIKO EPSON CORP

Inventor： YOKOYAMA OSAMU ,  MIYASHITA SATORU ,  SHIMODA TATSUYA ,  FUNAMOTO TATSUAKI

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

Abstract: PROBLEM TO BE SOLVED: To provide a panel-like illumination device having an independent power source. SOLUTION: Light emitting diodes 13 are arranged on the end surface of a light transmission plate 11 consisting of a transparent plate formed by dotting recessed shapes 12 on the surface thereof on an observer side. The power source is constituted of a solar battery 14 and a secondary battery 15. Then, a photovoltaic current generated by the solar battery 14 is detected by a photovoltaic current detection circuit 18. Based on the magnitude of the photovolataic current, the brightness of a periphery is judged by a brightness discrimination circuit 19. When the periphery is dark, a turning-on circuit 16 is turned on so as to turn on the diodes 13. Light made incident from the end surface of the plate 11 is totally reflected by the recessed shapes 12 and transmitted through the plate 11 downward so as to illuminate a liquid crystal display device 21 being an object to be illuminated.

公开(公告)号：JPH1050124A

公开(公告)日：1998-02-20

申请号：JP20740796

申请日：1996-08-06

Applicant: SEIKO EPSON CORP

Inventor： YOKOYAMA OSAMU ,  MIYASHITA SATORU ,  FUNAMOTO TATSUAKI

IPC: G02F1/1335 ,  F21V8/00 ,  G02F1/133 ,  G02F1/13357 ,  H01L51/50 ,  H05B33/00 ,  H05B33/12

Abstract: PROBLEM TO BE SOLVED: To thin surface lighting system and to thin a liquid crystal display having it. SOLUTION: An organic electroluminescent(EL) light source 10 is disposed in close proximity to an incoming light end surface of a light conducting plate 15. The organic EL light source 10 comprises a transparent electrode film 12 laminated on a glass board 11 one by one, and an organic EL element 19 composed of an organic luminescent layer 13 and a reflection electrode film 14. The organic EL element 19 having a width we of about 0.1mm and a length nearly equal to a width W of the light conducting plate 15 (e.g. 30mm) is formed in a stripe shape. A width wg of the glass board 11 can be made thinner about 1mm. Therefore, a thickness of the light conducting plate 15 can be made thinner about 1mm. Light incident on the light conducting plate 15 is uniformly emitted from an outgoing light surface 18 to optimize a structure of the light conducting plate 15 so that an illuminating device can be used for a liquid crystal display element.

公开(公告)号：JPH09160025A

公开(公告)日：1997-06-20

申请号：JP32085795

申请日：1995-12-08

Applicant: SEIKO EPSON CORP

Inventor： YOKOYAMA OSAMU

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

Abstract: PROBLEM TO BE SOLVED: To constitute a bright liquid crystal display device while suppressing the increment of thickness of an illuminating device. SOLUTION: When an orthogonal coordinate system defining the center axis of a fluorescent tube 10 as a (z) axis and an axis extended in the reverse direction of a photoconductive plate 12 as an (x) axis is set up, a reflection mirror consists of a 1st reflection face 11a and a 2nd reflection face 11b which are symmetrical about an xz face. The cross sectional shape of the 1st reflection face 11a is expressed by the locus of a point (x, y) expressed by equations I to III when it is defined that (r) is the radius of a reference circle and θis an angle measured from the (x) axis along an xy face.

公开(公告)号：JPH08220230A

公开(公告)日：1996-08-30

申请号：JP24541595

申请日：1995-08-30

Applicant: SEIKO EPSON CORP

Inventor： YOKOYAMA OSAMU ,  KANEKO TAKEO

IPC: G01S7/48 ,  G01S7/481 ,  G01S7/484 ,  G01S17/02 ,  G01S17/93

Abstract: PURPOSE: To provide a light sensing device which can measure detecting objects with high accuracy by irradiating the light to areas necessary at a short distance and a long distance with unwasteful and sufficient intensity. CONSTITUTION: A light sensing device contains a light source composed of a semiconductor laser 100, a light sending optical system 10 containing a lens 12 and a diffraction grating 14 arranged on the optical axis of the emitting light from this light source and receiving light detecting systems 20 and 42 to detect the reflected light of the emitting light by detecting objects IF and IN. The emitting light is diffracted at least in the orthogonal two directions by diffraction grating surfaces 14a and 14b possessed by the diffraction grating 14.

公开(公告)号：JPH07296672A

公开(公告)日：1995-11-10

申请号：JP8504894

申请日：1994-04-22

Applicant: SEIKO EPSON CORP

Inventor： MIYASHITA SATORU ,  YOKOYAMA OSAMU

IPC: G02B1/11 ,  G02B1/111 ,  G06F3/03 ,  G06F3/041 ,  G06F3/047 ,  H01H13/02 ,  H01H13/52

Abstract: PURPOSE:To provide a touch panel which has high transparency and appearance and excellent position detecting ability by a method wherein a transparent electrode the film thickness of which is controlled is additionally functioned as a reduction reflection coating high refraction layer and a high molecule layer containing conductive particles the film thickness of which is controlled is formed on an outermost surface. CONSTITUTION:At least one base material of transparent electrode base sheets 13 and 14 has refraction of 1.48-1.63. A reduction reflection film consisting of a first layer formed of a transparent electrode having refraction n1 (1.65