Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2002-12-09
2004-05-18
Nguyen, T. H. (Department: 2861)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S085000
Reexamination Certificate
active
06736484
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a discharge method and device for discharging a liquid mass which has a certain flowability.
And, the present invention relates to an electro optical device such as a liquid crystal device, an electroluminescent device, an electrical migration device, an electron emission device or a PDP (Plasma Display Panel) device or the like, to a method of manufacture of an electro optical device for manufacturing such an electro optical device, and to a device for manufacturing the same. Furthermore, the present invention relates to a color filter which is used in an electro optical device, and to a method of manufacture of such a color filter and to a device for manufacturing the same. Yet further, the present invention relates to a device which comprises a backing such as an electro optical member, a semiconductor device, an optical member, a reagent inspection member or the like, and to a method of manufacture of such a device which comprises such a backing and to a device for manufacturing the same.
BACKGROUND ART
In recent years display devices which are so called electro optical devices, such as liquid crystal devices and electroluminescent devices and the like, have become widespread as display sections for electronic devices such as portable telephones, portable computers and the like. Furthermore, recently, it has become common to provide a full color display upon such a display device. A full color display upon such a liquid crystal device is provided, for example, by passing light which has been modulated by a liquid crystal layer through a color filter. And such a color filter is made by arranging filter elements of various colors such as R (red), G (green), and B (blue) in dot form upon the surface of a substrate plate which is made from, for example, glass or plastic or the like in a predetermined array configuration such as a so called stripe array, delta array, or mosaic array or the like.
Furthermore, a full color display upon such an electroluminescent device is provided by, for example, arranging electroluminescent layers of various colors such as R (red), G (green), and B (blue) in dot form upon the surface of a substrate plate which is made from, for example, glass or plastic or the like in a predetermined array configuration such as a so called stripe array, delta array, or mosaic array or the like, and sandwiching these electroluminescent layers between pairs of electrodes so as to form picture elements (pixels). And, by controlling the voltage which is applied between these electrodes for each picture element pixel, a full color display is provided by causing light of the desired colors to be emitted from these picture elements.
In the past, there has been a per se known method of using photolithography when patterning the filter elements of a color filter of various colors such as R, G, and B, or when patterning the picture elements of an electroluminescent device of various colors such as R, G, and B. However there are certain problems when using this photolithography method, such as the fact that the process is complicated, the fact that large quantities of the color material or the photoresist are consumed, the fact that the cost becomes high, and the like.
In order to solve this problem, a method has been contemplated of forming a filament or an electroluminescent layer or the like as a dot form array by discharging in dot form a filter element material or an electroluminescent material by an ink jet method.
Now, a method of making a filament or an electroluminescent layer or the like as a dot form array by an ink jet method will be explained. The case will be considered in which, as shown in FIG.
29
(
a
), a plurality of filter elements
303
which are arrayed in dot form are formed, based upon an ink jet method, upon the internal regions of a plurality of panel regions
302
shown in FIG.
29
(
b
) which are established upon the surface of a so called motherboard
301
which is a substrate plate of relatively large area which is made from glass, plastic or the like. In this case, as for example shown in FIG.
29
(
c
), while performing a plurality of episodes of main scanning (in
FIG. 29
, two episodes) for a single panel region
302
, as shown by the arrow signs A
1
and A
2
in FIG.
29
(
b
), with an ink jet head which has a plurality of nozzles
304
which are arranged in a linear array so as to constitute a nozzle row
305
, filter elements
303
are formed in the desired positions by discharging ink, i.e. filter material, selectively from this plurality of nozzles during these main scanning episodes.
These filter elements
303
are ones which are formed by arraying various colors such as R, G, and B and the like as described above in a suitable array form such as a so called stripe array, delta array, or mosaic array or the like. Due to this, in the ink discharge processing by the ink jet head
306
shown in FIG.
29
(
b
), ink jet heads
306
for just the three colors R, G, and B are provided in advance, so as to discharge the single colors R, G, and B. And a three color array including R, G, and B or the like is formed upon the single motherboard
301
by using these ink jet heads
306
in order.
On the other hand, if a plurality of panel regions
302
are formed upon the motherboard
301
, then it has been contemplated to form the filter element
303
at high efficiency by using an ink jet head of elongated form so that the ink jet head is positioned along substantially the entire extent of the widthwise dimension of the motherboard
301
, which constitutes its widthwise direction with respect to the main scanning direction of the ink jet head. However there is the problem that, if a motherboard
301
is utilized whose size is different from and does not correspond to the size of the panel regions
302
, every time this happens, a different ink jet head comes to be required, and accordingly the cost is increased.
Because the ink jet head has a mechanism in which ink is pressurized by a pressing means, for instance a piezo electric crystal, it is necessary wirings through which signal to drive the piezo electric crystal passes. According to the above necessity, a head device which comprises a board on which a ink jet head and a connector by which a circuit for driving the ink jet head are integrally mounted is utilized.
However, it is necessary to consider a working efficiency in wiring the ink jet heads, a layout of the head devices so as to obtain a desired print pattern, and an noise prevention in designing an arrangement of the head devices.
SUMMARY OF THE INVENTION
The present invention has been conceived in view of the above described considerations, and its objective is to provide: a liquid drop discharge device and a discharge method which are prevented from being influenced by an electrical noise and are easy in a construction, a electro optical device, a method and device of manufacture thereof, a color filter, a method and device of manufacture thereof, a device incorporating backing, a method and device of manufacture thereof.
(1) A discharge device according to the present invention proposes a plurality of discharge means each of which comprises a liquid drop discharge head provided with nozzles which discharge liquid mass having a certain flowability onto an object onto which liquid drops are to be discharged, a mounting board on which the liquid drop discharge head is mounted, and a connector which is arranged on the mounting board, a holding means on which the plurality of discharge means are arranged; and a shifting means for relatively shifting at least one of this holding means and the object onto which liquid drops are to be discharged. According to an aspect of the present invention, the plurality of discharge means are aligned to be separated into groups of discharge means and the discharge means in one of the groups are orientated so that their connectors do not face the discharge means in the other of the groups, and so as to orientate a plane, on which the nozzles of
Nguyen T. H.
Oliff & Berridg,e PLC
Seiko Epson Corporation
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