Sae Yoon Lee

US Patent:

47130342, Dec 15, 1987

Filed:

Jul 23, 1985

Appl. No.:

6/758174

Inventors:

Sae D. Lee - Buffalo Grove IL
Kazimir Palac - Carpentersville IL

Assignee:

Zenith Electronics Corporation - Glenview IL

International Classification:

H01J 9227
H01J 940

US Classification:

445 45

Abstract:

In-process articles of manufacture are disclosed for the manufacture of a high-resolution color cathode ray tube having a tensed foil shadow mask. A first article-in-process comprises a faceplate with a target area for receiving at least one pattern of phosphor deposits. The faceplate has attached at preselected, widely spaced locations on the sides thereof a plurality of discrete, detachable first indexing elements. An article-in-process comprises a shadow mask support assembly having a frame ultimately constituting a part of the tube envelope; the frame supports the shadow mask in precise adjacency to the target area. The frame has attached on the sides thereof a like plurality of discrete, detachable second indexing elements which are in facing adjacency to the first indexing elements on the faceplate when the faceplate and frame are mated. Temporary attachment of the indexing elements is by means of a thermally degradable cement. The faceplate and frame can be inter-registered in precise relationship by the temporary use of the first and second indexing elements in the process of screening the pattern of phosphor deposits on the target area and later in the final assembly of the tube.

US Patent:

52813053, Jan 25, 1994

Filed:

May 22, 1992

Appl. No.:

7/888568

Inventors:

Sae H. Lee - Fullerton CA
Richard L. Davis - Redondo Beach CA

Assignee:

Northrop Corporation - Los Angeles CA

International Classification:

H01L 21306
B44C 122

US Classification:

156657

Abstract:

A method is described for producing stacked optical waveguides in a silicon dioxide substrate and includes the steps of: etching a first trench in the substrate; filling the first trench with a glassy optical transmission media; depositing a layer of silicon dioxide over the filled trench; etching a second trench in the silicon dioxide layer, the second trench aligned with the first trench; and filling the second trench with a glassy optical transmission media.

US Patent:

47394129, Apr 19, 1988

Filed:

Aug 8, 1986

Appl. No.:

6/894984

Inventors:

Sae D. Lee - Buffalo Grove IL

Assignee:

Zenith Electronics Corporation - Glenview IL

International Classification:

H01J 2987

US Classification:

358247

Abstract:

A resin bonding system which bonds an implosion protection panel to the faceplate of a CRT tube and is cured by exposure to ultraviolet radiation. The resin bonding system is designed for differential adhesion so that the faceplate separates more easily from the resin than does the implosion protection panel, thus achieving superior implosion performance.

US Patent:

47907851, Dec 13, 1988

Filed:

Dec 11, 1987

Appl. No.:

7/131968

Inventors:

Sae D. Lee - Buffalo Grove IL
Kazimir Palac - Carpentersville IL

Assignee:

Zenith Electronics Corporation - Glenview IL

International Classification:

H01J 920

US Classification:

445 45

Abstract:

Components-in process and assemblies-in-process are disclosed for use in the manufacture of a high-resolution color cathode ray tube having a tensed foil shadow mask. A first component-in-process comprises a faceplate with a target area for receiving at least one pattern of phosphor deposits. The faceplate has attached at preselected, widely spaced locations on the sides thereof a plurality of discrete, detachable first indexing elements. A second component-in-process comprises a shadow mask support assembly having a frame ultimately constituting a part of the tube envelope; the frame supports the shadow mask in precise adjacency to the target area. The frame has attached on the sides thereof a like plurality of discrete, detachable second indexing elements which are in facing adjacency to the first indexing elements on the faceplate when the faceplate and frame are mated. Temporary attachment of the indexing elements is by means of a thermally degradable cement. The faceplate and frame can be inter-registered in precise relationship by the temporary use of the first and second indexing elements in the process of screening the pattern of phosphor deposits on the target area and later in the final assembly of the tube.

US Patent:

48413720, Jun 20, 1989

Filed:

Dec 15, 1986

Appl. No.:

6/941458

Inventors:

Sae D. Lee - Buffalo Grove IL

Assignee:

Zenith Electronics Corporation - Glenview IL

International Classification:

H01J 2987

US Classification:

358247

Abstract:

A resin bonding system which bonds a substantially flat implosion protection panel to the nominally flat faceplate of a flat tension mask CRT tube and is cured by exposure to ultraviolet radiation. The resin bonding system is designed for differential adhesion so that the faceplate separates more easily from the resin than does the implosion protection panel, thus achieving superior implosion performance. It also incorporates a contrast-enhancing neutral density agent, preferably confined to a flat layer adjacent to and adhered to the flat surface of the implosion panel in order to achieve uniform neutral density filtration across the face of the tube. The neutral density agent is preferably an organic dye. Because the nominally flat faceplate is actually somewhat concave after evacuation of the tube, confining the neutral density agent to the layer which adheres to the flat faceplate avoids mottling of the CRT picture which would otherwise result from changes in the thickness of the pigmented layer across the face of the CRT.

US Patent:

49300156, May 29, 1990

Filed:

Apr 6, 1988

Appl. No.:

7/178111

Inventors:

Lawrence W. Dougherty - Sleepy Hollow IL
Sae D. Lee - Buffalo Grove IL
Melvin F. Rogers - Western Springs IL

Assignee:

Zenith Electronics Corporation - Glenview IL

International Classification:

H04N 565

US Classification:

358246

Abstract:

A CRT implosion protection system having a resin system releasably bonding an implosion panel to the faceplate of a flat or concave CRT and a tension band system secured around the periphery of the faceplate which exerts compression thereon. The tension band system includes a pair of keeper bars which prevent the tension band from slipping, and which secure an external magnetic shield to the CRT.

US Patent:

46212949, Nov 4, 1986

Filed:

Mar 30, 1984

Appl. No.:

6/595085

Inventors:

Sae D. Lee - Buffalo Grove IL

Assignee:

Zenith Electronics Corporation - Glenview IL

International Classification:

H04N 574

US Classification:

358237

Abstract:

An image projection system using a projection type cathode ray tube and lens element. The improvement being a direct optical coupling between the display surface and the lens element comprised of a transparent, compressible, multi-layer, resin formulated pad wherein the outer layer of the pad are peelable.