Samsung Sdi Co., Inc.

Deok-hyeon Choe

Young-bin Im

Dong-hwan Kim

Sang-Ho Jeon

Joon Hyung Lee

Jong-Han Rhee

Joon-Soo Bae

Kuen-Dong Ha

Gui-bae Kim

Arimoto Nozomu

A mask-frame assembly for a color cathode-ray tube comprising a first and second support members spaced out a predetermined distance; first and second resilient support members installed between the first and second support members supporting the first and second support members, each at the first and second resilient support members comprising supports fixed to the first and second support members and a connecting portion connecting the supports; a mask installed at the first and second support members such that tension is applied thereto, the mask comprising a plurality of electron beam through holes; and a compensating unit connected between the first and second support members or the supports of the resilient support members between each connecting portion and the mask, the compensating unit being formed of a material having a lower thermal expansion coefficient than the first and second resilient support members.

Mask-frame assembly for color cathode-ray tube having compensating unit

A mask for a color cathode ray tube (CRT) and a manufacturing method thereof are provided. This mask includes a plurality of strips isolated from each other at predetermined intervals in parallel, and a plurality of bridges for forming slots through which electron beams pass by connecting adjacent strips to each other. In this mask, each of the bridges between adjacent strips has a first curved portion formed on the side from which electron beams come out, and a second curved portion formed on the side upon which electron beams are incident. The first curved portion has a first width in the direction perpendicular to the length direction of the strips, and extends in the length direction of the strips. The second curved portion has a second width that is smaller than the first width in the length direction of the adjacent strips.

Mask for color cathode ray tube having beneficial slot and bridge configurations, manufacturing method thereof, and exposure mask for manufacturing the mask

A tension mask for a color cathode-ray tube, a method for manufacturing the tension mask, and an exposure mask for use in the manufacture of the tension mask are provided. The tension mask is manufactured by depositing photosensitive layers over the top and bottom surfaces of a steel foil. An upper exposure mask with a pattern including a series of parallel upper light transmission portions arranged in lines is aligned over the top surface of the steel foil, and a lower exposure mask with a pattern is aligned over the bottom surface of the steel foil. Here, the pattern of the lower exposure mask includes a series of parallel lower light transmission portions arranged in lines, a plurality of first light shielding portions intersecting adjacent lower light transmission portions among the series of the parallel lower light transmission portions, and a plurality of second light shielding portions partially extending between the edges of the adjacent lower light transmission portions. Following this, the photosensitive layers uncovered with the lower and upper exposure masks are exposed using an exposure light source, and then the upper and lower exposure masks are removed from the steel foil and developing the photosensitive layers remaining on the steel foil. Lastly, the steel foil which has undergone the developing process is etched, so that the tension mask is completed.

Tension mask for color CRT, method for manufacturing the tension mask, and exposure mask used in the manufacture of the tension mask

Growing community of inventors

Suwon, South Korea

Deok-hyeon Choe