公开(公告)号：JP2007324355A

公开(公告)日：2007-12-13

申请号：JP2006152425

申请日：2006-05-31

Applicant: Sony Corp ,  ソニー株式会社

Inventor： SASAKI KENICHI

IPC: G02F1/133 ,  G02F1/13357 ,  H01L33/00 ,  H05B37/02

CPC classification number: G02F1/133603 ,  G02F2001/133612

Abstract: PROBLEM TO BE SOLVED: To prevent all of serially-connected light-emitting diodes in one row from being unlit during an opening failure (an open failure) in the light-emitting diodes by a simple configuration. SOLUTION: Each protection element 52A-52n is connected in parallel to each of a plurality of the serially-connected light-emitting diodes 51A-51n. By this, when the opening failure occurs in the light-emitting diodes, dielectric breakdown of the protection elements connected in parallel to the light-emitting diodes occurs, so as to prevent all of the serially-connected light-emitting diodes in one row from being unlit. The protection element is composed of an insulating layer film-formed between a light-emitting diode chip fixed on a substrate and a wiring pattern formed on the substrate. When the opening failure occurs in the light-emitting diodes, the insulating layer provided between the wiring pattern and a lead terminal of the light-emitting diode chip dielectrically breaks down so as to make conductive between the wiring pattern and the light-emitting diode. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：通过简单的配置，防止发光二极管中的一行中的所有串联连接的发光二极管在开路故障（开路故障）期间不亮。 解决方案：每个保护元件52A-52n并联连接到多个串联的发光二极管51A-51n中的每一个。 由此，当在发光二极管中发生开路故障时，发生与发光二极管并联连接的保护元件的绝缘击穿，以防止一行中的所有串联连接的发光二极管 不亮 保护元件由固定在基板上的发光二极管芯片和形成在基板上的布线图案之间的薄膜形成的绝缘层构成。 当在发光二极管中发生开路故障时，设置在布线图案和发光二极管芯片的引线端子之间的绝缘层介电分解，以在布线图案和发光二极管之间导电。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2003223230A

公开(公告)日：2003-08-08

申请号：JP2002020515

申请日：2002-01-29

Applicant: SONY CORP

Inventor： SASAKI KENICHI

IPC: G05F1/56

Abstract: PROBLEM TO BE SOLVED: To reduce an excessive current at so-called 'hot-plug-in time' with a simple circuit. SOLUTION: An excessive current is controlled to be suppressed using an inductance element 18, by connecting a capacity reducing resistance 17 in parallel with a constant current circuit having at least a current detection resistance 11 for detecting whether an addition unit 3 is mounted or not by a potential difference at the time of operating an electronic device 2, a current control FET 13 connected serially with the current detection resistance 11 for controlling a current to be supplied to the addition unit 3 and a transistor 12 connected with a current detection resistance 11 by an emitter terminal for controlling the current control FET 13 according to the potential difference of both ends of the current detection resistance 11, and by arranging the inductance element 18 at the connection point. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2000060136A

公开(公告)日：2000-02-25

申请号：JP22412998

申请日：1998-08-07

Applicant: SONY CORP

Inventor： SASAKI KENICHI

IPC: H05B41/24 ,  H01L41/107 ,  H02M3/24 ,  H02M7/48 ,  H02M7/537 ,  H05B41/38

Abstract: PROBLEM TO BE SOLVED: To correct deviations from the optimum value of on-duty at frequency ripple of voltage applied to a piezoelectric transformer caused by input voltage change or dimming operation, etc. SOLUTION: Correction of on-duty is performed by providing a frequency controller 10a, which controls the frequency of the voltage applied to a piezoelectric transformer, with an on-duty resistor 12, which performs the correction to the ripple of input voltage by adding a voltage value which is proportional to the input voltage thereby correcting the reference value, and a dimming on duty switching circuit 13, which corrects the reference value by switching a voltage dividing resistor for correcting the reference value through switching of the voltage dividing resistor for creating a reference value by the existence of dimming operation, and controlling the frequency with the corrected reference value.

公开(公告)号：JP2000036395A

公开(公告)日：2000-02-02

申请号：JP20310598

申请日：1998-07-17

Applicant: SONY CORP

Inventor： SASAKI KENICHI

IPC: H05B41/24 ,  H01L41/107 ,  H02M7/48

Abstract: PROBLEM TO BE SOLVED: To improve lighting of a fluorescent tube in its start-up, and certainly light the fluorescent tube even in the case where a discharge time lag arises. SOLUTION: In a piezoelectric inverter circuit, a difference defined between a tube current which flows a fluorescent tube 30 and a reference value processed by a processing means 50 for the reference value is calculated by a tube current sensing unit 40, and accordingly a control means 10 for the frequency controls a frequency of a voltage applied to a piezoelectric transformer 20. The processing means 50 for the reference value, for a certain time for the start-up, gives such a start-up reference value obtained by adding a prescribed value on a normal reference value. Thereby, a control means 10 for a frequency generates a release voltage for certainly lighting the fluorescent tube 30 to the piezoelectric transformer 20 for a constant time.

公开(公告)号：JPH07288023A

公开(公告)日：1995-10-31

申请号：JP10469894

申请日：1994-04-19

Applicant: SONY CORP

Inventor： SASAKI KENICHI ,  SAKAI YOSHIHIRO

IPC: G02F1/1335 ,  F21V5/00 ,  F21V11/00 ,  G02F1/13357 ,  G09F13/04

Abstract: PURPOSE:To efficiently improve brightness nonuniformity at a low cost by arranging a light source like a fluorescent lamp between a reflecting part for light and a first light diffusion member and locating a second light diffusion member to a part on the high pressure side of the light source. CONSTITUTION:The reflecting part 12 of a case 11 is composed of white resin etc., to reflect the light of a neary U-shape fluorescent tube 13 to a diffusion plate 14 side. A masking pattern M1 in accordance with the shape of the tube 13 is pattern-printed by white ink, etc., onto the inner surface of the plate 14. A diffusion fluorescent tube cover 35 composed of material having an ultraviolet ray burning resistant characteristic such as polycarbonate is directly arranged in accordance with a part 6a corresponding to the high pressure side electrode 6 of the tube 13. Brightness nonconformity can be well improved at a low cost by forming the cover 35 into a size of about the width or diameter of the tube 13. Also stengthening the squeeze of the pattern M1 can be eliminated to improve the margin of an forming position.

公开(公告)号：JPH06273764A

公开(公告)日：1994-09-30

申请号：JP8908293

申请日：1993-03-24

Applicant: SONY CORP

Inventor： KATOU HIRONORI ,  YOSHIDA HIROAKI ,  SASAKI KENICHI

IPC: F21V5/02 ,  G02F1/1335 ,  G02F1/13357

Abstract: PURPOSE:To provide a high-luminance backlight unit with less unevenness of luminance without increasing production cost. CONSTITUTION:Plural light sources 14, a reflection part 13 reflecting the light from the light sources, a shield plate 18 arranged on an opposite side to the light source with respect to the reflection part, and a light diffusing part 16 arranged on the front side of the light source and diffusing the light directly made incident from the light source or the light guided after reflecting the light from the light source by the reflection part are provided; and illumination for an equipment arranged on the front side is performed through the light diffusing part in this backlight unit. The light source 14 corresponding to the low-luminance part of the light diffusing part, out of plural light sources, is arranged nearer to the light diffusing part 16 than other light source corresponding to the high-luminance part of the light diffusing part 16.

公开(公告)号：JPH06273750A

公开(公告)日：1994-09-30

申请号：JP8265693

申请日：1993-03-17

Applicant: SONY CORP

Inventor： SASAKI KENICHI ,  MATSUOKA MIYOSHI

IPC: F21S2/00 ,  G02F1/1335 ,  G02F1/13357

Abstract: PURPOSE:To provide a display device capable of removing dust depositing on a backlight part in the case of newly inserting the backlight part in a main body. CONSTITUTION:This display device is constituted so that the backlight part 12 for illuminating a display part 36 can be inserted in the main body 14 provided with a display part 36 displaying a picture, and a brush 28 functioning as a dust removing means for removing the dust depositing on the backlight part 12 is provided in relation to an insertion port 20 being an insertion part provided in the main body 14 so that the backlight part 12 can be inserted.

公开(公告)号：JPH06178548A

公开(公告)日：1994-06-24

申请号：JP35039592

申请日：1992-12-03

Applicant: SONY CORP

Inventor： SASAKI KENICHI

IPC: H02M3/155 ,  H02M7/48 ,  H05B41/16 ,  H05B41/24 ,  H05B41/282 ,  H05B41/29

Abstract: PURPOSE:To limit the output voltage of an inverter by restricting its input voltage. CONSTITUTION:A voltage limiting circuit 30 of an inverter is provided with a control signal means 23 that detects an input voltage to an inverter circuit 24 and outputs a control signal in response to a detection result of the input voltage, and a control means 22 that controls the input voltage on the basis of the control signal from the control signal output means 23.

公开(公告)号：JPH05113564A

公开(公告)日：1993-05-07

申请号：JP30250591

申请日：1991-10-22

Applicant: SONY CORP

Inventor： SASAKI KENICHI

IPC: G02F1/1335 ,  G02F1/13357

Abstract: PURPOSE:To miniaturize the liquid crystal back light unit and to suppress the generation of noises by disposing a power source circuit part between the non- light emitting parts of a fluorescent tube. CONSTITUTION:The small-sized fluorescent tube 2 having a U shape is provided on the rear surface of d liquid crystal panel. The light emitting part 2a of the fluorescent tube 2 is held on a reflection plate 1 having a rectangular planar shape. A tapered surface having the bottom facing the light emitting part 2a of the fluorescent tube 2 is formed on the reflection plate 1. The constituting parts of an inverter circuit part 3 which is the power source circuit part for driving and lighting the fluorescent tube 2 are disposed between the non-light emitting parts 2b at both ends of the fluorescent tube 2 projecting from one side of the reflection plate 1. Namely, the inverter circuit part 3 is provided between the non-light emitting parts 2b of the fluorescent tube 2 which is a dead space. Since both ends of the fluorescent tube 2 and the inverter circuit part 3 are in proximity to each other, the drawing around length of the wiring of a high voltage connecting therebetween is minimized.

公开(公告)号：JPH031490A

公开(公告)日：1991-01-08

申请号：JP13452589

申请日：1989-05-30

Applicant: SONY CORP

Inventor： SASAKI KENICHI

IPC: H05B41/02

Abstract: PURPOSE:To construct the circuit part of a fluorescent lamp in small size and suppress the cost by allowing a part of a core to be used commonly for a discharge transformer and a heater transformer, accomplishing a consolidated structure, and thereby compacting the transformer part. CONSTITUTION:A discharge transformer 10 and a heater transformer 11 use the same core 12b partially and are embodied in a consolidated structure. The gaps between the core 12b and the core portions which are not shared by them commonly are dimensioned properly to prevent magnetic saturation of the core 12b and to relieve the degree of bond of two magnetic circuits. The transformer part 11 operates only at the time of starting, followed by start of discharging, and thereafter the transformer is put out of operation. Then another core 12C performs heat radiation for the transformer 10 through the heat sink effect. Thus the two transformers 10, 11 are consolidated, wherein one makes that radiation for the other, which allows accomplishing a small-sized structure to lead to making the whole circuit small, which also ensures suppression of cost.