Ulvac, Inc.

Hiroshi Koshina

Junpei Yuyama

Masao Murata

Hiroto Uchida

Yasuzo Tanaka

Koji Hane

Takanori Tsuji

Mitsuru Yahagi

Yuya Inoue

Providing a spacer forming method by which spacers can be securely formed in a predetermined region on a substrate. Ink containing granular spacers is jetted onto a crossing portion of a black matrixin the shape of a lattice. Red pixel R, green pixel G and blue pixel B are formed in the openings of the lattice. The spacer containing ink is jetted onto the spacer forming positions from the nozzle by the ink jetting method. Plural drops of inkare jetted onto each of the spacer forming positions on one of the opposite substrates E. The gap between the opposite substrates E can be securely maintained at a constant for filling with liquid crystal.

Spacer forming method and spacer forming apparatus

According to a first invention, since a flow of a spacer dispersed liquid is formed in a transporting chamber separated from a discharging chamber by an internal filter, the spacer dispersed liquid is stably discharged through an ejection hole, while the discharging chamber on a side of a nozzle plate is not affected by the flow of the spacer dispersed liquid. According to a second invention, since a spacer dispersed liquid does not flow inside a discharging chamber in a printing state in which the spacer dispersed liquid is discharged, the spacer dispersed liquid is stably discharged through an ejection hole. To the contrary, since the spacer dispersed liquid is directed inside both the discharging chamber and the transporting chamber in a waiting state in which the spacer dispersed liquid is not discharged, spacer particles in the spacer dispersed liquid do not settle.

Head module, printing apparatus, and printing method

Growing community of inventors

Chigasaki, Japan

Hiroshi Koshina