Sumitomo Chemical Company, Limited

Shinto Paint Co., Ltd.

Other

Toshiaki Ota

Tsutomu Watanabe

Jun-Ichi Yasukawa

Junichi Yasukawa

Tsuyoshi Tokuda

Nobuhiko Nishihara

Mitsuru Suginoya

Hitoshi Kamamori

Tsuyoshi Nakano

Koji Iwasa

Takakazu Fukuchi

Tameyuki Suzuki

Kazuo Toda

Takuro Kamakura

Toyokazu Nomura

Tuyoshi Tokuda

The present invention discloses color pattern manufacturing method comprising the steps of forming a conductive film having an arbitrary pattern on a substrate, forming a colored layer on the conductive film by electrodeposition, and forming a method film having an arbitrary pattern on the colored layer to shield undesirable light transmittance through between the arbitrary patterns of the colored layer, so that the color filter having high quality is made by remarkably simple process.

Method for manufacturing a color filter

A method for manufacturing a color filter which includes arranging an electroconductor and a transparent substrate carrying an electroconductive transparent thin layer in an electrodeposition bath so that the electroconductor and the substrate are disposed in spaced and parallel relationship and that a baffle is disposed between the thus arranged electroconductor and the substrate, and carrying out electrodeposition in the electrodeposition bath by using the electroconductive transparent thin layer as one electrode and the electroconductor as a counter electrode permits the production of a desired color filter having superior layer flatness, even when the substrate enlarged in the size is used.

Electrodeposition method for manufacturing color filter

Color layers of a color filter obtained by exposing a transparent substrate to light from the back side followed by development may have a defect of layer unflatness produced due to unevenness caused by contamination with foreign matters. The defect can be repaired by eliminating the defective part of the color layers to produce a blank there, optionally filling the blank with a negative photosensitive composition containing a black colorant and returning the thus modified color filter to an appropriate step in the production line. The color filter repaired is used to fablicate multi-color display devices which are by no means inferior in display qualities to those fablicated using a color filter having no defect originally.

Method for preparing a color filter

A color filter having an improved uniformity of color layer thickness is industrially advantageously, manufactured by an electrodeposition method using as a counter electrode a wire netting-form electrode.

Method for manufacturing color filter by electrodeposition and electrode

A method for manufacturing a color filter which comprises holding an electroconductor and a tetragonal substrate having an electroconductive transparent thin layer on its surface in an electrodeposition bath in such a way that they are spaced apart and in parallel to each other, the substrate being suspended in an inclined state in a manner such that one of the apexes of the tetragonal substrate is located lower than any of its other apexes; carrying out electrodeposition in the electrodeposition bath; and removing the electrodeposited substrate from the electrodeposition bath while maintaining the inclined state; and which permits prompt removal of the bath adhering to the electrodeposited substrate to improve productivity.

Method for manufacturing color filter

A multi-color filter without a so-called bipolar phenomenon for use of color liquid crystal display devices is prepared by such a manner that plural sets of electroconductive circuits are prepared on transparent substrate; a given set of circuits on which a first color layer is to be formed is provided with a feeder circuit traversely in one lot; and the first electrodeposition is conducted by applying a current only to this set of circuits in order to impress a given voltage while voltage is increased gradually to a given level over a certain period of time, thereby forming the first color layer, and the electrodeposition is repeated in the similar way by applying current to each of the remaining sets of circuits.

Method for manufacturing multi-color filter and full color display

The present invention is for a method of forming a coating film used for filling the space between the color stripes for a color filter which is used for colorization of a liquid crystal display. In particular, the light-shielding electrodeposition coating is first formed in a transparent electric conductive circuit pattern so as to suppress the reaction of a photo-setting material against light which is to be applied to the electrodeposition coating.

Growing community of inventors

Narashino, Japan

Toshiaki Ota