公开(公告)号：JP2000111900A

公开(公告)日：2000-04-21

申请号：JP28167898

申请日：1998-10-02

Applicant: SONY CORP ,  STANLEY ELECTRIC CO LTD

Inventor： YOU EIHO ,  ISHIGE OSAMU ,  OKI YOJI

IPC: G02F1/1335 ,  F21V8/00 ,  G02F1/13357 ,  G02F1/29

Abstract: PROBLEM TO BE SOLVED: To provide a reflective display device with little inconvenience even if provided with front light. SOLUTION: This reflective display device has a panel 10 which is provided with a 1st substrate arranged on the incident side of external light, a 2nd substrate arranged on the opposite side of incident side thereto and joined with the 1st substrate, an electrooptical substance held in a gap, and an electrode 3d composing pixels 5 repeatedly arranged at a 1st pitch along a 1st direction, a plate-form light transmission plate 20 which is the one 20 arranged outside of the incident side to the 1st substrate and having a prism plane 12 opposed to a flat plane arranged on the side of the 1st substrate as a pair of opposing main planes and composing many prisms 12 repeatedly arranged at a 2nd pitch different from the 1st pitch is the 1st direction, and a linear polarizing plate and a quarter-wavelength plate 22 arranged on the flat plane side of the light transmission plate.

公开(公告)号：JPH11160507A

公开(公告)日：1999-06-18

申请号：JP33790497

申请日：1997-11-21

Applicant: SONY CORP

Inventor： YOU EIHO

IPC: G02B5/02 ,  G02B5/08 ,  G02F1/1335 ,  G09F9/30

Abstract: PROBLEM TO BE SOLVED: To improve the use efficiency of illumination light by improving the surface unevenness structure of the diffusion reflection plate built in the reflection type display device. SOLUTION: The diffuse reflection plate consists of a substrate 1 whose top-bottom direction and right-left direction perpendicular to it are prescribed, a set of projection parts 6 which are arranged thereupon and have slanting surfaces individually, and a light reflecting film 5 which covers the slanting surfaces. The slanting surfaces which are positioned in the top-bottom direction have larger area than the slanting surfaces which are positioned in the right-left direction. To manufacture this diffuse reflection plate, a 1st resin film 2 is formed on the substrate 1 first in conformity with striped patterns which are arrayed vertically at specific intervals and extend to the right and left. Then a 2nd resin film 3 is formed on the substrate 1 according to dot patterns which are arrayed overlapping with steps 4 of the striped patterns. The substrate 1 is heated to thermally deform the 2nd resin film 3 into the projection parts 6 having the slanting surfaces regarding the steps 4. Lastly, metal is deposited on the 2nd resin film 3 to form a light reflecting film 5. Consequently, the slanting surfaces of the individual projection parts 6 can be made anisotropy between the top-bottom surface and right-left direction.

公开(公告)号：JPH10268787A

公开(公告)日：1998-10-09

申请号：JP8774797

申请日：1997-03-21

Applicant: SONY CORP

Inventor： YOU EIHO ,  FUJIOKA TAKAYUKI ,  URABE TETSUO

IPC: G02F1/137 ,  G02F1/1335 ,  G02F1/13357 ,  G09F9/00

Abstract: PROBLEM TO BE SOLVED: To provide a reflection type display device permitting to be visually checked under a dark environment while saving a electric power consumption. SOLUTION: A reflection type display device is composed of a panel 0, a source of light 30, and an illumination member 50. The panel 0 is provided with a 1st substrate 1 placed on an incident side, a 2nd substrate in contact with the 1st substrate via a fixed space and placed on an opposite side, an electro-optical substance held in the space between both substrates 1, 2, and electrodes for impressing a voltage on the electro-optical substance formed by each of both substrates 1, 2. The source of light 30 is positioned at a side of the panel 0 and is turned on as necessary to emit light. An illumination member 50 is arranged so as to stand upright from the side of the panel 0, and guides illumination light emitted from the source of light 30 and also orients the light onto the surface of the panel 0 to be diagonally irradiated with it. The illumination member 50 is comprised of a light transmission plate 51 for guiding the illumination light, a diffuser 52 which is arranged on the back of the light transmission plate and diffuses the guided illumination light toward the surface, and a prism sheet 53 which is arranged on the surface of the light transmission plate 51 and orients the diffused illumination light to the panel 0.

公开(公告)号：JPH10111508A

公开(公告)日：1998-04-28

申请号：JP28322596

申请日：1996-10-04

Applicant: SONY CORP

Inventor： YOU EIHO ,  URABE TETSUO

IPC: G02F1/1335 ,  G09F9/35

Abstract: PROBLEM TO BE SOLVED: To improve the lightness and contrast of a display by improving the structure of the light reflection layer and quarter-wave plate layer built in a reflection type guest-host liquid crystal display device. SOLUTION: This reflection type guest-host liquid crystal display device consists of a first substrate 1 arranged on an incident side and a second substrate 2 joined to the first substrate 1 and arranged on the opposite side via a prescribed spacing. The device is provided with a guest-host liquid crystal layer 3 existing on the first substrate 1 side, the light reflection layer 8 existing on the second substrate 2 side and the quarter-wave plate layer 9 interposed between both layers via a prescribed spacing. Electrodes 10, 11 are respectively formed on the substrate 1 side and the second substrate 2 side to impress voltages on the guest-host liquid crystal layer 3. The light reflection layer 8 has ruggedness on its surface and has a light scattering property. As a result, the lightness of the display device is made higher. The quarter-wave plate layer 9 is formed at a uniform thickness along the ruggedness of the light reflection layer 8 and exactly plays a polarization conversion function. As a result, the contrast of the display device is increased.

公开(公告)号：JPH0720429A

公开(公告)日：1995-01-24

申请号：JP18736793

申请日：1993-06-30

Applicant: SONY CORP

Inventor： YOU EIHO ,  YASUDA AKIO ,  NITO KEIICHI ,  TAKANASHI HIDEHIKO ,  MATSUI ERIKO ,  HIDE SHICHIYOU ,  KATAOKA NOBUE

IPC: G02F1/13 ,  G02F1/1335 ,  G02F1/1347 ,  G09G3/36 ,  H04N5/335 ,  H04N5/349 ,  H04N5/357 ,  H04N5/372 ,  H04N5/66

Abstract: PURPOSE:To enable wobbling without spoiling the performance and to obtain high resolution by converging incident light on a position on the light incidence side of a wobbling element, corresponding to a pixel of an optical element, to specific size. CONSTITUTION:A microlens 76 is arranged opposite having an optical axis common to a microlens 74 on a display side and constitutes a light converging element 77 for projection light from the display 2. In this case, incident light 6 from each pixel of the display 2 can securely be converged on the microlens 76 through the microlens 74 and made incident on the liquid crystal element 3 of the wobbling elements 7 as parallel light to the same width and the same size with a transparent electrode 13. Therefore. the width or size of the luminous flux of the incident light becomes equal to the width or size of a black stripe part 75. Consequently, polarized light 6 projected from the display 2 is made incident on a liquid crystal element 3 to the same width and the same pitch and shifted in phase by this liquid crystal element 3 to change the direction of the polarized light.

公开(公告)号：JP2005122953A

公开(公告)日：2005-05-12

申请号：JP2003354527

申请日：2003-10-15

Applicant: Sony Corp ,  ソニー株式会社

Inventor： YOU EIHO

IPC: G02F1/13357 ,  F21S8/04 ,  F21V8/00 ,  F21Y101/02

Abstract: PROBLEM TO BE SOLVED: To provide a backlight device and a liquid crystal display, capable of eliminating unevenness of brightness without reducing the brightness of the front surface.
SOLUTION: The backlight device comprises a light guide plate 1, a plurality of point light sources 2 arranged along an incident end part 1a of the light guide plate 1, and interfaces of two mediums having refractive indexes different from each other, arranged between the point light sources 2 and the incident end part 1a, formed so as to make the light emitted from the respective point light sources 2 incident from the side of the medium having a larger refractive index. The plurality of boundary faces are arranged along the incident end part 1a so as to be located also between the adjacent point light sources 2. Further, the respective interfaces are made to slant with respect to the optical axis of the point light sources 2.
COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 解决的问题：提供一种背光装置和液晶显示器，其能够消除亮度的不均匀性，而不会降低前表面的亮度。 解决方案：背光装置包括导光板1，沿着导光板1的入射端部分1a布置的多个点光源2和具有彼此不同的折射率的两个介质的界面， 在点光源2和入射端部1a之间，形成为使得从各个点光源2发射的光从具有较大折射率的介质侧入射。 多个边界面沿着入射端部1a布置成也位于相邻的点光源2之间。此外，各个界面相对于点光源2的光轴倾斜。 P>版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JPH11202784A

公开(公告)日：1999-07-30

申请号：JP2268098

申请日：1998-01-20

Applicant: SONY CORP

Inventor： YOU EIHO

IPC: G09F9/35 ,  G09F9/00

Abstract: PROBLEM TO BE SOLVED: To impart an illumination structure enabling image observation in a dark environment without damaging the image quality in a bright environment, to a reflection type display device. SOLUTION: This reflection type display device is composed of a panel 0, a light transmission plate 20 and a light source 30. The light transmission plate 20 is disposed outside the panel 0 and the light source 30 is disposed at the end part of the light transmission plate 20 and generates illumination light at need. While the light transmission plate 20 normally transmits external light, makes it incident on the panel 0 and emits reflected external light, it transmits the illumination light, makes it incident on the panel 0 and emits reflected illumination light at need. The light transmission plate 20 is provided with mount parts 22 divided in a belt shape and groove parts 21 positioned between the respective mount parts. While the mount parts 22 constitute an emission plate 220, the groove parts 21 constitute a reflection side face 211 and a re-incident side face 212. The reflection side face 211 totally reflects a part of the illumination light led from the light source 30 and makes it be incident on the panel 0. The re-incident side face 212 makes the illumination light of a residual part transmitted through the reflection side face 211 incident on the light transmission plate again. The emission plate 220 emits the illumination light reflected from the panel 0.

公开(公告)号：JPH11160687A

公开(公告)日：1999-06-18

申请号：JP33790697

申请日：1997-11-21

Applicant: SONY CORP

Inventor： YOU EIHO

IPC: G02F1/1333 ,  G09F9/30

Abstract: PROBLEM TO BE SOLVED: To sharpen display contrast by improving an optical diffusion layer arranged on an observer's side of a display device. SOLUTION: A display device consists of a transparent front substrate 1 arranged forwardly opposing an observer and a rear substrate 2 joined to the front substrate 1 from behind via a predetermined gap. A transparent electrode 5 is formed on the front substrate 1, and a reflecting electrode 7 is formed on the rear substrate 7. Liquid crystal 9 is held in the gap between both substrates 1, 2, and in response to voltages impressed on the electrodes 5, 7, incident light reflected from behind is optically modulated into forward beams for showing an image. An optical diffusion layer 10 is arranged on the front substrate l and diffuses the outgoing beams to widen a viewing angle of the image from an observer. The optical diffusion layer 10 consists of cylindrical regions 102 formed to be able to forwardly guide the outgoing light and a medium 103 filling the space between the cylindrical regions 102, and the cylindrical regions 102 and the medium 103 have different refractive indices from each other.

公开(公告)号：JPH10171379A

公开(公告)日：1998-06-26

申请号：JP35298596

申请日：1996-12-13

Applicant: SONY CORP

Inventor： YOU EIHO ,  FUJIOKA TAKAYUKI

IPC: G02F1/1333 ,  G02F1/1335 ,  G09F9/35

Abstract: PROBLEM TO BE SOLVED: To improve the contrast and lightness of a display of the reflection type guest-host liquid crystal display device which has a light reflecting layer and a 1/4-wavelength plate layer inside. SOLUTION: In the gap between an incidence-side 1st substrate 2 and an opposite- side 2nd substrate 3, guest-host liquid crystal 4 is arranged on the side of the 1st substrate 2 and the 1/4-wavelength plate layer 7 is arranged on the side of the 2nd substrate 3. Further, electrodes 8 and 16 are formed on the sides of the 1st substrate 2 and 2nd substrate 3 to apply a voltage to the guest-host liquid crystal 4. On the side of the 2nd substrate 3, light reflecting layer 9 is provided and reflects incident light 1 by a nearly mirror surface to convert it into reflected light 11. On the side of the 1st substrate 2, a light diffusion layer 10 is arranged and scatters or diffuses the reflected light 11 from behind to the front to convert it into projection light 12. A flattening film 20 is formed filling unevenness of the surface of the light diffusion layer 10 and the surface is smoothed and polished. AN electrode 8 is formed on the surface of the smoothed and polished flattening film 10. Or the electrode 8 may be provided by roughening the surface of the flattening film 20 into a rough surface according to circumstances.

公开(公告)号：JPH08184796A

公开(公告)日：1996-07-16

申请号：JP34008494

申请日：1994-12-28

Applicant: SONY CORP ,  CHISSO CORP

Inventor： MATSUI ERIKO ,  TAKANASHI HIDEHIKO ,  KATAOKA NOBUE ,  YOU EIHO ,  NITO KEIICHI ,  YASUDA AKIO ,  MURAKI KATSUYUKI ,  OKABE EIJI ,  SAITO SHINICHI

IPC: G02F1/13 ,  C09K19/46

Abstract: PURPOSE: To obtain a liquid crystal material having characteristics adequate for use as an optical modulation element by combining and mixing specific ten kinds of respective compds. CONSTITUTION: This liquid crystal material is composed of a liquid crystal material consisting of a ferroelectric liquid crystal(FLC) compsn. formed by mixing the respective compds. expressed by formula I to formula X. In the formula I to the formula X, R and R are 1 to 18C straight chain or branched chain alkyl group of not contg. asymmetric carbon and may contain double bonds or triple bonds in this group; R and R are 2 to 14C and the same or different straight chain or branched chain alkyl groups or alkoxy groups; X denotes 0 to 8, C* denotes asymmetric carbon. This liquid crystal material is the ferroelectric liquid crystal(FLC) compsn. exhibiting a chiral smectic C phase within a temp. range of -41 to 74 deg.C and is particularly driven by the presence of an electric field within a temp. range of -10 to 72 deg.C. This material is adequate for a wobbling operation.