Source: http://www.google.com/patents/US5603650?ie=ISO-8859-1&dq=5631832
Timestamp: 2014-03-14 00:20:54
Document Index: 321703837

Matched Legal Cases: ['art 2001', 'art 2001', 'art 2001', 'art 2001', 'art 2001', 'art 2001']

Patent US5603650 - Image display apparatus and method of making the same - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsAn image display apparatus includes a rear electrode for controlling a first quantity of electrons in an electron beam. Also included is an electron beam generating source for generating the electrons which travel in parallel with each other and an extraction electrode for extracting the electron beams...http://www.google.com/patents/US5603650?utm_source=gb-gplus-sharePatent US5603650 - Image display apparatus and method of making the sameAdvanced Patent SearchPublication numberUS5603650 APublication typeGrantApplication numberUS 08/457,864Publication dateFeb 18, 1997Filing dateJun 1, 1995Priority dateJul 28, 1993Fee statusLapsedAlso published asDE69406377D1, DE69406377T2, EP0637051A1, EP0637051B1, US5446337Publication number08457864, 457864, US 5603650 A, US 5603650A, US-A-5603650, US5603650 A, US5603650AInventorsKanji Imai, Toshifumi Nakatani, Tomohiro Sekiguchi, Kyouichi Uematsu, Mitsunori YokomakuraOriginal AssigneeMatsushita Electric Industrial Co., Ltd.Export CitationBiBTeX, EndNote, RefManPatent Citations (10), Classifications (11), Legal Events (5) External Links: USPTO, USPTO Assignment, EspacenetImage display apparatus and method of making the sameUS 5603650 AAbstract An image display apparatus includes a rear electrode for controlling a first quantity of electrons in an electron beam. Also included is an electron beam generating source for generating the electrons which travel in parallel with each other and an extraction electrode for extracting the electron beams from the generated electrons. A control electrode is also included for selectively controlling a second quantity of electrons in the electron beams which have passed through the extraction electrode and a horizontal deflection electrode for electrostatically deflecting the electron beams. A vertical deflection electrode is provided for deflecting the electron beams which have passed through the horizontal deflection electrode. The vertical deflection electrode has a first comb-shaped conductive sheet having first parallel members and a second comb-shaped conductive sheet having second parallel members. The first members and the second members are alternatively formed adjacent to each in the horizontal direction. Furthermore, the first comb-shaped conductive sheet and the second comb-shaped conductive sheet have notches formed at regular intervals. The horizontal deflection electrode and the vertical deflection electrode are insulated from each other.
What is claimed: 1. A method for making a vertical deflection electrode for an image display apparatus, said method comprising the steps of:interdigitating a first comb-shaped conductive sheet and a second comb-shaped conductive sheet so that the first conductive sheet, and the second conductive sheet are intermittently connected to each other by a connecting part, said first and second conductive sheets having a plurality of notches at a regular interval, bonding said first conductive sheet and said second conductive sheet to a separate electrode using an insulating material, and removing said connecting part to form the vertical deflection electrode. 2. The method for making the vertical deflection electrode of claim 1 wherein said first conductive sheet and second conductive sheet are formed from a conductive sheet by etching.
3. The method for making the vertical deflection electrode of claim 1, wherein said insulating material is a low melting point solder glass.
4. A method for making a vertical deflection electrode for an image display apparatus, said method comprising the steps of:interdigitating a first comb-shaped conductive sheet and a comb-shaped second conductive sheet so that the first conductive sheet and the second conductive sheet are intermittently connected by a connecting part which is disposed between notches, said connecting part further having a center section and end sections, said center section is wider than said end sections, said center section further having a hole, aligning said first and second conductive sheets with a separate electrode using said hole, bonding said first conductive sheet and said second conductive sheet to said separate electrode using an insulating material, and removing said connecting part by using said hole to determine where to sever said connecting part from said first and second conductive sheets to produce the vertical deflection electrode. 5. The method for making the vertical deflection electrode of claim 4, wherein the first conductive sheet and the second conductive sheet are formed from a conductive sheet by etching.
6. The method for making the vertical deflection electrode of claim 4, wherein said insulating material is a low melting point solder glass.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENT As shown in FIG. 7, rear electrode 101, linear cathode 102a, 102b, and 102c, extraction electrode 103, signal electrode 104, focusing electrode 105, horizontal deflection electrode 106, and vertical deflection electrode 107 are disposed in a case including a front container 108 having a coated fluorescent material and a rear container 109. Extraction electrode 103, signal electrode 104, horizontal deflection electrode 106, and vertical deflection electrode 107 are integrated as electrode unit 122. The case includes front container 108 and rear container 109 which holds electrode unit 122 in a vacuum. Each of the components are disposed in the image display apparatus in a similar manner as the components in the conventional image display apparatus.
EXAMPLE 1 The construction of the vertical electrode is explained below.
EXAMPLE 2 In this exemplary embodiment, a conductive sheet is etched to form first conductive sheet 2018a and second conductive sheet 2018b which are intermittently connected by connecting part 2001 as shown in FIG. 5A.
The center of connecting part 2001 is wider than both ends of connecting part 2001 as shown in the enlarged plane view of connecting part 2001 in FIGS. 5B and 5C. A hole 2002 is also formed in the center of connecting part 2001. In addition, notches 2003 are formed on each side of both ends of connective part 2001.
Comb-shaped conductive sheets 2018a and 2018b are interdigitated along a common single plane spacing between each of the fingers of conducting plates 2018a and 2018b. Conductive sheets 2018a and 2018b form the vertical deflection electrode.
EXAMPLE 3 FIG. 6 is a partial enlarged view of vertical deflection electrode.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a plane view of the vertical deflection electrode according to an exemplary embodiment of the present invention.
BACKGROUND OF THE INVENTION The present invention relates to an image display apparatus to be employed in a television set or a computer peripheral display and a method of making the same.
SUMMARY OF THE INVENTION The present invention relates to an image display apparatus including a rear electrode which controls the amount electrons in an electron beam. Further included is an electron generating source which emits electrons. An extraction electrode extracts electron beams from the emitted electrons from the linear cathode. Each electron beam travels along a constant direction. A control electrode is further provided for selectively controlling the amount of electrons in the electron beams from the extraction electrode. Further included is a horizontal deflection electrode for electrostatically deflects the electron beams which have passed through the focusing electrode. A vertical deflection electrode having-a pair of comb-shaped conductive sheets which are interdigitated with each other in a horizontal direction along the same plane is also provided. The vertical deflection electrode also includes notches positioned along the comb-shaped conductive sheets at regular intervals. The horizontal deflection electrode and the vertical deflection electrode are insulated from each other. Further included is a display means for emitting light corresponding to the electron beams which have passed through the vertical deflection electrode.
The present invention further relates to an image display apparatus that includes a rear electrode which controls the amount of electrons contained in an electron beam. Also provided are linear cathodes which are formed in parallel with each other to emit electrons and an extraction electrode extracts electron beams along a specified direction from the emitted electrons from linear cathode. Also included is a control electrode for selectively controlling the amount of electrons in the electron beams which pass through the extraction electrode. A focusing electrode electrostatically focuses the electron beams after passing through the control electrode and a horizontal deflection electrode electrostatically deflects the electron beams which have passed through the focusing electrode. Further provided is a vertical deflection electrode having a pair of comb-shaped conductive sheets which are interdigitated with each other in a horizontal direction along the same plane. Also included is a display device which emitslight corresponding to the electrons from the electron beams which have passed through the vertical deflection electrode. Each conductive sheet of the vertical deflection electrode further includes projection sections and notches which are formed on either side of the projection parts.
This application is a division of U.S. patent application Ser. No. 08/266,217, filed Jun. 27, 1994, now U.S. Pat. No. 5,446,337.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS4955681 *Nov 16, 1988Sep 11, 1990Matsushita Electric Industrial Co., Ltd.Image display apparatus having sheet like vertical and horizontal deflection electrodesUS5003219 *Nov 8, 1989Mar 26, 1991Matsushita Electric Industrial Co., Ltd.Fixed construction for plate electrodes in a flat display unitUS5085606 *Dec 28, 1990Feb 4, 1992Zenith Electronics CorporationMethod of manufacture for post-mask deflection type tension mask color cathode ray tubeUS5189335 *Dec 23, 1991Feb 23, 1993Matsushita Electric Industrial Co., Ltd.Method of controlling electron beams in an image display apparatusEP0050295A1 *Oct 12, 1981Apr 28, 1982Matsushita Electric Industrial Co., Ltd.A method for making an electrode construction for a flat-type display device and an electrode construction obtained by this methodEP0316871A2 *Nov 15, 1988May 24, 1989Matsushita Electric Industrial Co., Ltd.Image display apparatusJPH0261948A * Title not availableJPH01130453A * Title not availableJPS6070638A * Title not availableJPS61243634A * Title not available* Cited by examinerClassifications U.S. Classification445/33, 445/34, 445/49, 445/35International ClassificationH01J9/14, H01J31/12Cooperative ClassificationH01J2329/00, H01J31/126, H01J9/148European ClassificationH01J9/14D, H01J31/12F4BLegal EventsDateCodeEventDescriptionApr 7, 2009FPExpired due to failure to pay maintenance feeEffective date: 20090218Feb 18, 2009LAPSLapse for failure to pay maintenance feesAug 25, 2008REMIMaintenance fee reminder mailedJul 14, 2004FPAYFee paymentYear of fee payment: 8Aug 7, 2000FPAYFee paymentYear of fee payment: 4RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google