Seiko Epson Corporation

Masaharu Shimizu

Hiroshi Kiguchi

Satoru Katagami

Tomomi Kawase

Hisashi Aruga

Keiji Takizawa

Natsuo Fujimori

Tadaaki Kuno

Tatsuya Ito

The present invention provides a system which shortens the scanning time with an ink jet head for forming a pattern of filter elements of a color filter, picture element pixels of an electroluminescence (EL) device, or the like. An apparatus for producing a color filter can include a plurality of filter elements arranged on a substrate. The apparatus can further include a plurality of heads each having a nozzle row having a plurality of nozzles arranged, an ink supply device for supplying a filter element material to the heads, a carriage supporting the heads arranged thereon, a main scanning driving device for moving the carriage by main scanning in the X direction, and a sub-scanning driving device for moving the carriage by sub-scanning in the Y direction. The carriage supports the plurality of heads each of which is inclined at an in-plane inclination angle &#x3b8;.

Apparatus and method for producing color filters by discharging material

The color filter of the present invention comprises ink films colored by ink dropsinside openingsenclosed by banksdemarcated and formed on a substrate. The bankshave a laminar structure comprising a metal filmand a photosensitive organic thin filmfrom the substrateside. The inks should contain a solvent having a high boiling point. The bank layer may also be configured so that the peripheral edges of the bottom surface thereof are positioned inside from the peripheral edges of the light blocking layers, so that the light blocking layers have exposed surfaces on the upper surface thereof where the bank layer is not superimposed. Thus color filters can be provided which exhibit outstanding contrast without coloring irregularities.

Color filter and manufacturing method therefor

The invention makes uniform, in a plane, optical properties of optical members, such as the distribution properties of light transmission of a color filter, the color display properties of a liquid crystal device, and the light emission properties of an EL luminescent plane. During main scanning of color filter formation areas of a board in the X direction with an ink jet head having a nozzle row formed of a plurality of nozzles arranged in a row, a filter material is selectively discharged from the plurality of the nozzles to each of filer element areas arranged in a dot matrix to form filter elements, producing a color filter. First, the nozzle row is moved to positions 'a' and 'b' by main scanning in the X direction to enhance wettability of the surface of the areas and then main scanning is executed at each of the positions while successively moving the nozzle row to positions &#x201c;c&#x201d; through &#x201c;k&#x201d; by sub-scanning, thereby repeatedly discharging ink in the same portion of the areas.

Method and apparatus for producing color filter, method and apparatus for manufacturing liquid crystal device, method and apparatus for manufacturing EL device, method of discharging material, apparatus for controlling head and electronic apparatus

The color filter of the present invention comprises ink films colored by ink dropsinside openingsenclosed by banksdemarcated and formed on a substrateThe bankshave a laminar structure comprising a metal filmand a photosensitive organic thin filmfrom the substrateside. The inks should contain a solvent having a high boiling point. The bank layer may also be configured so that the peripheral edges of the bottom surface thereof are positioned inside from the peripheral edges of the light blocking layers, so that the light blocking layers have exposed surfaces on the upper surface thereof where the bank layer is not superimposed. Thus color filters can be provided which exhibit outstanding contrast without coloring irregularities.

A manufacturing method of an active matrix substrate which can prevent the complexity of manufacturing processes, widens the range of material choice and allows high manufacturing yield, and a manufacturing method of a liquid crystal display using such active matrix substrate. Conductive colored layers (to) functioning as pixel electrodes and color filters are formed by a process of discharging, by an ink jet method, a mixed ink of coloring material and conductive material to the formation area of a pixel electrode to be connected electrically to an active element ().

Method of manufacture of active matrix substrate and liquid crystal display device

The present invention provides a method for making a color filter having a plurality of filter elements aligned in a dot-matrix on a substrate. The method has a first-scanning step of moving the inkjet head having a nozzle line including a plurality of nozzles relative to the substrate while selectively discharging a filter material from the plurality of nozzles so as to form filter elements on filter element forming regions of the substrate and a second-scanning step of moving the inkjet head by a second-scanning distance &#x3b4; in a second-scanning direction. The plurality of nozzles are divided into a plurality of groups and the first-scanning step and the second-scanning step are repeated so that all the nozzle groups scan the same section of the substrate.

Methods and apparatus for making color filter by discharging a filter material

The invention makes uniform, in a plane, optical properties of optical members, such as the distribution properties of light transmission of a color filter, the color display properties of a liquid crystal device, and the light emission properties of an EL luminescent plane. During main scanning of color filter formation areas of a board in the X direction with an ink jet head having a nozzle row formed of a plurality of nozzles arranged in a row, a filter material is selectively discharged from the plurality of the nozzles to each of filer element areas arranged in a dot matrix to form filter elements, producing a color filter. First, the nozzle row is moved to positions &ldquo;a&rdquo; and &ldquo;b&rdquo; by main scanning in the X direction to enhance wettability of the surface of the areas and then main scanning is executed at each of the positions while successively moving the nozzle row to positions &ldquo;c&rdquo; through &ldquo;k&rdquo; by sub-scanning, thereby repeatedly discharging ink in the same portion of the areas.

METHOD AND APPARATUS FOR PRODUCING COLOR FILTER, METHOD AND APPARATUS FOR MANUFACTURING LIQUID CRYSTAL DEVICE, METHOD AND APPARATUS FOR MANUFACTURING EL DEVICE, METHOD OF DISCHARGING MATERIAL, APPARATUS FOR CONTROLLING HEAD AND ELECTRONIC APPARATUS

A method is provided for making a color filter having a plurality of filter elements aligned in a dot-matrix on a substrate. The method has a first-scanning step of moving the inkjet head having a nozzle line including a plurality of nozzles relative to the substrate while selectively discharging a filter material from the plurality of nozzles so as to form filter elements on filter element forming regions of the substrate and a second-scanning step of moving the inkjet head by a second-scanning distance &dgr; in a second-scanning direction. The plurality of nozzles are divided into a plurality of groups and the first-scanning step and the second-scanning step are repeated so that all the nozzle groups scan the same section of the substrate.

The color filter of the present invention comprises ink films colored by ink drops inside openings enclosed by banks demarcated and formed on a substrate . The banks have a laminar structure comprising a metal film and a photosensitive organic thin film from the substrate side. The inks should contain a solvent having a high boiling point. The bank layer may also be configured so that the peripheral edges of the bottom surface thereof are positioned inside from the peripheral edges of the light blocking layers, so that the light blocking layers have exposed surfaces on the upper surface thereof where the bank layer is not superimposed. Thus color filters can be provided which exhibit outstanding contrast without coloring irregularities.

Growing community of inventors

Hara-mura, Japan

Masaharu Shimizu