Scale Or Graticule Patents (Class 313/462)
-
Patent number: 8168085Abstract: Materials suitable for use in highly energy-efficient production of white light through photo-luminescence, such as in light emitting devices, are generally provided. A composition comprising a compound having the formula: Sr3-vAvMO4-xF1-ywherein A is Ca, Ba, or a mixture thereof; M is Al, Ga, In, W, Mo, or a mixture thereof; 0?v?1; 0<x<0.4; and 0<y<0.2 is generally described. A composition comprising a compound having the formula: Sr3-vAvIn1-mMmO4-xF, where A is Ca, Ba, or a mixture thereof; M is Al, Ga, W, Mo, or a mixture thereof; 0?v?1; 0<m<1; and 0<x<4 is also provided. Nitrogen can be substituted for a portion of the oxygen atoms in these structures. Methods introducing defects into a compound by removing a portion of oxygen and fluorine atoms from the compound are also provided.Type: GrantFiled: January 5, 2009Date of Patent: May 1, 2012Assignee: University of South CarolinaInventors: Thomas Vogt, Sangmoon Park
-
Patent number: 7477011Abstract: In an electron emission device, the surface roughness of a substrate with driving electrodes and an insulating layer is optimized. The electron emission device includes first and second substrates facing each other with a predetermined distance therebetween. An electron emission unit is formed on a surface of the first substrate facing the second substrate, and includes electron emission regions, a plurality of driving electrodes, and an insulating layer for insulating the driving electrodes from each other. A light emission unit is formed on a surface of the second substrate facing the first substrate, and includes phosphor layers and an anode electrode. The first substrate satisfies the following condition: 0.5 nm?Ra?1.8 nm, where Ra indicates the average roughness of the surface of the first substrate facing the second substrate.Type: GrantFiled: November 25, 2005Date of Patent: January 13, 2009Assignee: Samsung SDI Co., Ltd.Inventors: Sang-Ho Jeon, Byong-Gon Lee, Sang-Hyuck Ahn, Su-Bong Hong
-
Patent number: 7378787Abstract: Disclosed is a flat panel display device including a first substrate; an electron emitting region formed on the first substrate; a second substrate opposing the first substrate with a predetermined gap therebetween; a vacuum assembly being formed by the first and the second substrates; and a light emitting region including a phosphor layer with a predetermined pattern and emitting light by electrons emitted from the electron emitting region, and an anode formed on one side of the phosphor layer, wherein the projections and depressions are formed on the anode, or on the second substrate.Type: GrantFiled: March 2, 2005Date of Patent: May 27, 2008Assignee: Samsung SDI Co., Ltd.Inventors: Soo-Joung Lee, Su-Kyung Lee
-
Patent number: 7361417Abstract: A phosphor layer having improved contrast and brightness characteristics and a display device including the same are provided. The phosphor layer is made out of an ultra-fine pigment, a dispersant, a phosphor, a photosensitizer and a binder. The phosphor has a uniform distribution along the thickness of the phosphor layer, and the pigment varies in content over the thickness of the phosphor layer. A method of forming the phosphor layer is based on existing phosphor layer processes and includes a reduced number of processing steps than a filter screen method, thereby markedly lowering the manufacturing costs. The phosphor layer can be used in a cathode ray tube, a plasma display panel, a field emission display, and an organic electroluminescent device.Type: GrantFiled: May 4, 2004Date of Patent: April 22, 2008Assignee: Samsung SDI Co., Ltd.Inventors: Byung-Heun Kang, Jong-Sang Lee, Jae-Hong Lim, Seok-Hwan Cha, Hong-Kyu Choi
-
Patent number: 6388372Abstract: A display screen may be formed with a moth-eye like array of elements of sufficiently small size to reduce glare from ambient light while passing outbound image light substantially unaffected. The screen may be used in direct view and projection displays.Type: GrantFiled: August 8, 2001Date of Patent: May 14, 2002Assignee: Intel CorporationInventors: Kannan Raj, Lawrence A. Booth, Jr.
-
Patent number: 6326723Abstract: A display screen may be formed with a moth-eye like array of elements of sufficiently small size to reduce glare from ambient light while passing outbound image light substantially unaffected. The screen may be used in direct view and projection displays.Type: GrantFiled: May 25, 1999Date of Patent: December 4, 2001Assignee: Intel CorporationInventors: Kannan Raj, Lawrence A. Booth, Jr.
-
Patent number: 5789853Abstract: A flat-panel display device comprising a substrate, a patterned layer and an absorbing layer, the absorbing layer interposed between the substrate and the patterned layer, the patterned layer being formed of a material having a rate of erosion greater than the rate of erosion of the substrate under powder spraying, and the absorbing layer being of a material capable of absorbing the kinetic energy of particles comprising a powder spray.Type: GrantFiled: September 6, 1995Date of Patent: August 4, 1998Assignee: U.S. Philips CorporationInventors: Jacobus M. Dings, Remko Horne, Gerardus N. A. Van Veen
-
Patent number: 5637958Abstract: A face plate (10) of an FED image display has a grooved rear surface (25) formed with projections (36). Projections (36) have surfaces (39) covered in regions (58, 59) with electrical conductive material (54) and different color emitting phosphor particles (56a, 56b). The regions (58, 59) define different color anode combs. Surfaces (39) in regions (61) between regions (58,59) are covered with insulative, light absorbing material (62) for absorption of ambient light. Surfaces (39) are formed to encourage forward direction of phosphor-emitted light. In one embodiment, surfaces (39) serve to channel ambient light rearwardly toward projection apexes (40) which are covered with light absorbing material (62). Projections (36) may be parallel elongated prisms, pyramids or cones.Type: GrantFiled: March 6, 1995Date of Patent: June 10, 1997Assignee: Texas Instruments IncorporatedInventor: Jules D. Levine
-
Patent number: 5489816Abstract: A color cathode ray tube with reduced desquamation includes a panel on which spaced-apart phosphor elements and a black matrix, filling the spaces between and contacting the phosphor elements, are disposed. A metal back covers the phosphor layer and the black matrix and is in direct contact with the black matrix and is spaced from and does not contact the phosphor elements. The direct contact with substantially all the black matrix and the complete separation from the phosphor elements improves the adhesion of the metal back while increasing luminance and reducing desquamation of the metal back.Type: GrantFiled: September 23, 1993Date of Patent: February 6, 1996Assignee: Samsung Display Devices Co., LtdInventor: Byeong-yong Lee
-
Patent number: 5479068Abstract: The color cathode ray tube of this invention improves the purity (color purity) adjustment margin and permits bright display without deteriorating the resolution. At least the black matrix holes 40g, 40b, 40r, forming the phosphor surface or the shadow mask apertures are so arranged that the center-to-center distance between the adjacent holes or apertures corresponding to the pixel phosphors of the same color in a vertical direction is greater by about 10 to 70% than the center-to-center distance in an inclined direction. Further, at least the black matrix holes or the shadow mask apertures are shaped non-circular with their vertical cross-section greater than their horizontal cross-section. With this invention it is possible to provide a color cathode ray tube which has improved brightness and purity (color purity) adjustment margin and a substantially enhanced resolution.Type: GrantFiled: March 4, 1994Date of Patent: December 26, 1995Assignee: Hitachi, Ltd.Inventor: Satoshi Muto
-
Patent number: 5463273Abstract: An image display faceplate having a plurality of recesses (dimples) formed therein for receiving discrete phosphor droplets and having a conformal metallization layer disposed thereon is provided. The phosphor system so described may be dispensed onto the faceplate without the need for multiple sequential depositions, maskings, and material removals and provides for a single step deposition of dis-similar phosphor materials of which the phosphor system is comprised.Type: GrantFiled: May 4, 1994Date of Patent: October 31, 1995Assignee: MotorolaInventors: Yumiko Kato, James E. Jaskie, David A. Wiemann
-
Patent number: 4928035Abstract: In a glass viewing screen for a color-picture-reproducing device, the phosphor areas deposited on the inside of the glass viewing screen are surrounded by a sealing-glass matrix. The matrix is made of a sealing glass that shrinks upon thermal crystallization so that the sealing glass may be deposited by screen printing.Type: GrantFiled: February 14, 1989Date of Patent: May 22, 1990Assignee: Nokia GraetzInventor: Michael Schlipf
-
Patent number: 4704558Abstract: A beam detection apparatus for sensing the position of an electron beam within a cathode ray tube is disclosed. The apparatus includes a photodetector for optically detecting the intersections of the electron beam with a graticule line on the faceplate of the cathode ray tube. In a second embodiment, an electrically conductive pattern of reference markers is applied to the graticule for intercepting the beam and a detector is coupled to the conductive pattern for detecting the interception. Calibration circuitry is also included to generate input signals to deflection amplifiers coupled to the cathode ray tube and to evaluate detection signals generated by the beam coinciding with a graticule line. The calibration circuitry compares the input signals to the input signal value represented by the graticule line and adjusts the deflection amplifiers of the cathode ray tube accordingly to cause the beam to coincide with a graticule line bearing a predetermined relationship to the input signal deflecting the beam.Type: GrantFiled: December 2, 1985Date of Patent: November 3, 1987Assignee: Tektronix, Inc.Inventors: John L. Addis, David W. Morgan
-
Patent number: 4521686Abstract: In making precision measurements with a television camera tube, the inherent scan non-linearity and magnification variations are readily calibrated by painting a grid of known dimensions on the tube face.Type: GrantFiled: May 24, 1983Date of Patent: June 4, 1985Assignee: Nanometrics IncorporatedInventors: Vincent J. Coates, J. Evan Grund, Stephen B. Westrate
-
Patent number: 4283655Abstract: A cathode-ray tube for a multipurpose test and measurement or information display instrument is provided with multiple internal graticules. One of the graticules is permanently visible and functional at all times the instrument is in operation. Another of the graticules is formed in a manner such that it is not easily visible in normal ambient lighting conditions alone, but becomes plainly visible when edge lighted by suitable means.Type: GrantFiled: October 26, 1979Date of Patent: August 11, 1981Assignee: Tektronix, Inc.Inventors: Ralph A. Mossman, Kenneth R. Stinger
-
Patent number: 4143404Abstract: An optical filter possessing narrow pass band characteristics selectively absorbs impinging ambient white light components and is used in combination with a laminate graticule having transparent electrodes lying in a common plane for defining a multiplicity of electrically insulating gaps in the pattern of the graticule for exciting associated partially over-lying electroluminescent phosphor patterns. The graticule pattern being composed of an electroluminescent material, night viewing of the graticule is readily accomplished by electrically exciting it. For daylight viewing, the unexcited phosphor material is itself directly viewed.Type: GrantFiled: February 17, 1978Date of Patent: March 6, 1979Assignee: Sperry Rand CorporationInventors: James B. Armstrong, J. Robert Trimmier
-
Patent number: 4063289Abstract: A cathode ray tube mounting means includes a front panel member having an opening through which a cathode ray tube is passed, and it has projections on its funnel section that mate with wedging members movably mounted in the panel member. A bezel having an implosion shield means therein is secured onto the front panel member and the wedging members are secured into position thereby moving the faceplate of the cathode ray tube into tight engagement with the implosion shield means. Lighting means is disposed between the front panel member and the bezel adjacent the faceplate to effectively light the graticule scale of the cathode ray tube screen and to permit easy replacement of light bulbs. A connecting means is also provided for electrically connecting a camera to the circuitry within the electronic instrument containing the cathode ray tube.Type: GrantFiled: November 18, 1976Date of Patent: December 13, 1977Assignee: Tektronix, Inc.Inventor: Cornelis Teunis Veenendaal