Chunghwa Picture Tubes, Ltd.

Su-Chiu Lee

Chu-Chi Ting

Chuang-Chun Chueh

Yu-Heng Hsieh

Chao-Jen Chang

Hsiang-Hui Tseng

A printing screen, printing process and method for improving side-bottom ratio are provided. The printing screen mainly comprises a plurality of printing units, wherein each of the printing units comprises a body and a protrusion structure. The body has an ink aperture, and the protrusion structure extends from a surface of the body into the ink aperture. The printing process of a fluorescent layer in a plasma display panel utilizing the said printing screen can enhance the uneven film thickness of the fluorescent layer on the bottom of a discharge chamber, and further improve the side-bottom ratio of the fluorescent layer in a plasma display panel.

Printing process and method for improving side-bottom ratio

A flat light source including a first substrate, a second substrate, a sealant, several sets of dielectric pattern and a phosphor layer is provided. The first substrate has electrodes thereon. The sealant is disposed between the first and second substrates to form a space between the first and second substrates and the sealant. These sets of dielectric pattern are formed in the space between the first and second substrates. Each set of dielectric pattern has at least two dielectric strips, and each dielectric strip covers one of the electrodes correspondingly. Each dielectric strip has a top surface and two side surfaces, and the top surface has an uneven contour. The phosphor layer is disposed between the two dielectric strips of each set of dielectric pattern, and the phosphor layer is further disposed on the top surface of the dielectric strips.

Flat light source

A flat light source having a main region and an edge region around the main region is provided. The flat light source includes a first substrate, first electrodes, dielectric patterns, a phosphor layer, first phosphor patterns, a second substrate, and a sealant. The first electrodes are disposed on the first substrate and arranged within the main region and the edge region. The dielectric patterns cover the first electrodes. The phosphor layer is disposed between the dielectric patterns in the main region and the edge region. The first phosphor patterns are disposed on the phosphor layer within the edge region. The second substrate is disposed above the first substrate, and the sealant is formed out of the edge region between the first and second substrates so as to bond the two substrates.

Growing community of inventors

Taipei County, Taiwan

Su-Chiu Lee