专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

51. 发明专利

JPH03233842A IMAGE DISPLAY DEVICE 失效
公开(公告)号：JPH03233842A
公开(公告)日：1991-10-17
申请号：JP28795189
申请日：1989-11-07
申请人： FURUKAWA ELECTRIC CO LTD
发明人： TAKAGI SEISHI , HARA TOSHITAKA , KARIBE KAZUO , NEGAMI SHOICHI
IPC分类号： H01J31/12
摘要： PURPOSE:To output the electron effectively by providing an output electrode, which has a transparent hole extended in parallel with the longitudinal direction of a cathode and for applying the positive potential against the cathode potential, between the cathode and a deflecting means. CONSTITUTION:An output electrode 28 having a transparent hole 28a extended in the longitudinal direction of a cathode 12 is provided between the cathode 12 and a parallel means 20, and when the positive potential at several - tens V against the cathode potential is applied to this output electrode 28, the output electrode 28 comes close to the cathode 12 and the low positive potential is given. The electron can be thereby output effectively, and the equipotential surface from an anode 26 is formed into the smooth potential distribution in the anode side of the output electrode 28 to form a thin type electrostatic lens, and aberration of electron beams can be thereby reduced.

52. 发明专利

JPH03210741A FLAT TYPE CATHODE-RAY TUBE DISPLAY 失效
公开(公告)号：JPH03210741A
公开(公告)日：1991-09-13
申请号：JP356590
申请日：1990-01-12
申请人： FURUKAWA ELECTRIC CO LTD
发明人： TAKAGI SEISHI , NEGAMI SHOICHI , KARIBE KAZUO
IPC分类号： H01J31/12
摘要： PURPOSE:To improve the effect of horizontal focus of an electron beam by providing a focusing electrode which has a through hole that almost matches with the center line of a control electrode, on the back surface of a substrate, and which focuses the electron in the direction that a cathode is extended, between an electron deriving electrode and a deflecting electrode. CONSTITUTION:The effect of horizontal focus of an electron beam is defined by the combination of a horizontal control electrode 18 and a horizontal focusing electrode 30. Namely, an electron radiation part P of a cathode 16 provided close to the electrode 18, so as to give almost predetermined spot diameter through the electrode 18, is determined accurately. Electron is derived by an electron deriving electrode 22 to which positive electric potential is applied, in relation to the cathode 16. The effect of electron beam focus is augmented by a through hole 30a of an electrode 302 in the region of (b), and the electron beam can be led to a screen surface. Even when beam current is increased, or even when an interval between cathode and anode is increased, sufficient effect of horizontal focus can thus be achieved.

53. 发明专利

JPH03207181A DRIVING METHOD FOR PLANE TYPE CATHODE-RAY DISPLAY DEVICE 失效
公开(公告)号：JPH03207181A
公开(公告)日：1991-09-10
申请号：JP111990
申请日：1990-01-09
申请人： FURUKAWA ELECTRIC CO LTD
发明人： TAKAGI SEISHI , HARA TOSHITAKA , NEGAMI SHOICHI
IPC分类号： H04N5/68 , G09G1/20
摘要： PURPOSE:To detect an electron beam by the entire electrode by cutting off the electron beam, which is cut off in a blanking period and radiated by a cathode, by a 2nd electrode on an anode side. CONSTITUTION:A horizontal control electrode 18 as a 1st electrode detects the electron beam emitted by the cathode 16 in the blanking period and an error signal is fed back to at least either of the horizontal control electrode 18 and a lead-out electrode 20; and its output signal is corrected to drive the electron beam while controlling it. Thus, a beam quantity detecting means is the electrode 18 which is arranged on the reverse surface side at right angles to the cathode; while this beam quantity detection electrode is applied with a potential which is positive to the the cathode, a cutoff potential is applied from the cathode to electrode on the anode side to cut off the electron beam traveling from the cathode to the anode. Consequently, the electrode on the reverse surface side of the cathode detects the quantity of the electron beam effectively.

54. 发明专利

JPH03145044A PLANE PICTURE IMAGE DISPLAY DEVICE 失效
公开(公告)号：JPH03145044A
公开(公告)日：1991-06-20
申请号：JP27990289
申请日：1989-10-30
申请人： FURUKAWA ELECTRIC CO LTD
发明人： HARA TOSHITAKA , TAKAGI SEISHI , NEGAMI SHOICHI , KARIBE KAZUO
IPC分类号： H01J31/12 , G09F9/40
摘要： PURPOSE:To obtain a clear picture image with high brightness even in a large capacity display by dividing plural control electrodes into at least two or more in their longitudinal direction. CONSTITUTION:First plural control electrodes 18, separately provided from a cathode 12, second plural control electrodes 20, parallelly arranged to the cathode 12 between a vertical deflection electrode 14 and the first control electrodes 18, and an anode 26, integrally having an emitter 24 emitting light with an electron radiated from the cathode 12 irradiated, are provided. The control electrodes 18 are divided into four electrode pieces 18A-18D, and these electrode pieces 18A-18D are connected to independent data circuits 30A-30D respectively. Consequently high brightness can be retained even display capacity is increased by increasing pulse width applied to the cathode 12 from a scanning circuit. This can obtain a clean picture image with high brightness in a large capacity display.

55. 发明专利

JPH0381937A FLAT IMAGE DISPLAY 失效
公开(公告)号：JPH0381937A
公开(公告)日：1991-04-08
申请号：JP21798689
申请日：1989-08-24
申请人： FURUKAWA ELECTRIC CO LTD
发明人： HARA TOSHITAKA , TAKAGI SEISHI , NEGAMI SHOICHI , KARIBE KAZUO
IPC分类号： H01J31/12
摘要： PURPOSE:To eliminate non-uniformity in brightness generated between blocks on a screen without reducing an effective display area by juxtaposing a beam current detecting electrode backward longitudinally correspondingly to a cathode. CONSTITUTION:A beam current detecting electrode 24 is interposed between insulative layers 34 and a back plate 12 each disposed under horizontal control electrodes 16. A positive high voltage is applied to the electrode 24. Almost all electrons emitted from the region of a cathode 14 disposed opposite to intervals 16a formed between the striped horizontal control electrodes 16 through the intervals 16a are absorbed into the electrode 24. Accordingly, a beam current detector 36 detects the current of the electrode 24, and a voltage controller 38 controls the voltage applied to an electron beam flow control electrode 22, thereby making the amount of beams reaching a screen constant. Therefore, the operation can be performed in the same manner in the whole region of the cathode, thus keeping the brightness of the whole screen uniform.

56. 发明专利

JPH0374031A PLANE CATHODE-RAY IMAGE DISPLAYING DEVICE 失效
公开(公告)号：JPH0374031A
公开(公告)日：1991-03-28
申请号：JP21012589
申请日：1989-08-16
申请人： FURUKAWA ELECTRIC CO LTD
发明人： TAKAGI SEISHI , HARA TOSHITAKA , NEGAMI SHOICHI
IPC分类号： H01J31/15 , H01J29/87
摘要： PURPOSE:To support an electrode structural body with pressure proof without damaging an anode or a front substrate or display characteristics by composing a support means of a plurality of pins fixed by an upper and a lower supporting member. CONSTITUTION:A pressure proof supporting means 40 is composed of a plurality of pins 48 fixed by a conductive lower support member 44 in contact with a surface of an anode 12, and an insulation upper support member 46 provided between an electrode structural body 28 and a back surface substrate 18. Part of the pins 48 on the side of the lower support member 44 is of conductive material, while part of the upper support member 46 is of insulation material. The rigidity of the supporting means 40 is increased thereby, and concentration of load on the anode 12 the front substrate 16 is eliminated. Damage to these is thus prevented, and high display characteristics can be obtained without disturbing potential distribution.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式