JP2003266680A - Method and unit for ejecting liquid drop, method for fabricating liquid crystal device, liquid crystal device, and electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and a unit for ejecting a liquid drop in which ejection quantity can be controlled precisely. <P>SOLUTION: A liquid drop ejection head 1, a liquid tank 2, and a liquid supply passage 3 provided between the liquid tank 2 and the ejection head 1 are contained in a housing 4 along with a substrate W and a liquid drop L is ejected from the ejection head 1 under a state where the temperature in the housing 4 is regulated to a specified level. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a droplet discharge method, a droplet discharge device, a liquid crystal device manufacturing method, a liquid crystal device, and an electronic apparatus which are excellent in discharge accuracy.

[0002]

2. Description of the Related Art An ejection head used in an ink jet type device such as an ink jet printer or an ink jet plotter is provided with a nozzle forming plate 210, a cavity forming plate 220, and a vibrating plate 230, as shown in FIG. There is. The cavity forming plate 220 includes a cavity (pressure generating chamber) 221, a side wall (partition wall) 222,
A reservoir 223 and an introduction path 224 are provided. The cavity 221 is formed by etching a substrate made of silicon or the like, and serves as a space for storing ink just before ejection. The side wall 221 is formed so as to partition the cavities 221, and the reservoir 223 serves as a flow path for filling the cavities 221 with ink. The introduction path 224 is formed so that ink can be introduced from the reservoir 223 into each cavity 221.

The nozzle forming plate 210 is bonded to one surface of the cavity forming plate 220 with an organic or inorganic adhesive so that the nozzle opening 211 is located at a position corresponding to each of the cavities 221 formed in the cavity forming plate 220. It is pasted together with an agent. The cavity forming plate 220 to which the nozzle forming plate 210 is attached is further housed in the housing 225 to form the ejection head 200. Diaphragm 23
0 is attached to the other surface of the cavity forming plate 220 with an organic or inorganic adhesive. Diaphragm 23
Piezoelectric vibrators (not shown) as pressure generating elements are provided in the portions corresponding to the positions of the cavities 221 of 0, respectively. In addition, a supply port (not shown) is formed in a portion of the vibration plate 230 corresponding to the position of the reservoir 223, and the ink stored in the ink tank (not shown) is stored inside the cavity forming plate 220. It is available for supply.

According to such an ink jet type apparatus, if liquids such as lubricating oil and resin are discharged instead of ink, these liquids can be delivered to a predetermined area on the object without contacting the object. It has the advantage that it can be applied with precision. Therefore, it can be used for manufacturing a liquid crystal device or the like.

In the above-mentioned ink jet type apparatus, the drive voltage and the drive waveform are appropriately set in order to set the ejection amount per dot to a desired value. Further, in order to eject a high-viscosity liquid, it is also possible to heat the liquid to reduce its viscosity, thereby enabling ejection from the ejection head. In this case, the heating is usually performed by individually heating the ejection head and / or the liquid tank. As a result, it was possible to set the viscosity at which the liquid can be ejected and to control the ejection amount per dot to some extent.

[0006]

However, even if the driving voltage, the driving waveform, and the liquid temperature are kept constant, the ejection amount per dot may vary, and precise control of the ejection amount is difficult. Met. Therefore, especially in fields where it is necessary to control the discharge amount of droplets with high accuracy,
There is a demand for a discharge method and device that can control the discharge amount more precisely. As a field in which the discharge amount of droplets needs to be controlled with high accuracy, for example, there is a method of manufacturing a liquid crystal device by supplying a liquid crystal material from a discharge device onto a substrate. In this method, if the ejection amount varies, the brightness and darkness of the display pixels become non-uniform, and if the ejection amount is not sufficient, the display is not performed. Therefore, precise control of the ejection amount is desired.

In view of the above circumstances, an object of the present invention is to provide a droplet discharge method and a droplet discharge apparatus capable of precisely controlling the discharge amount, and to provide a high quality liquid crystal device and a manufacturing method thereof. An object is to provide electronic equipment using this liquid crystal device.

[0008]

As a result of examining the above-mentioned problems, the present inventor has found that it is difficult to uniformly heat the ejection head and / or the liquid tank by the conventional method. Found. Then, they have found that the cause of making uniform heating difficult is the difference between the temperature of the discharge head and the like and the ambient temperature.

Therefore, the present invention is a droplet discharge method for discharging droplets from a droplet discharge head onto a substrate, wherein both the droplet discharge head and the substrate are adjusted to a predetermined temperature. Provided is a droplet discharge method characterized by arranging in a single temperature control space. According to the present invention, since the temperature of the ejection head is the same as the ambient temperature, the entire ejection head can be uniformly and accurately brought to a predetermined temperature. Therefore, the discharge amount can be precisely controlled.

In the present invention, it is preferable that a liquid tank for supplying a liquid to the droplet discharge head is arranged in the single temperature control space. Further, it is preferable that a liquid supply path provided between the liquid tank and the droplet discharge head is arranged in the single temperature control space. As a result, the temperature of the liquid can be controlled more precisely, and the discharge amount can be controlled more precisely.

The present invention is also a droplet discharge device for discharging droplets from a droplet discharge head onto a substrate, wherein the droplet discharge head and the substrate are both adjusted to a predetermined temperature. Provided is a droplet discharge device, which is arranged in one temperature control space. According to the present invention, since the temperature of the ejection head is the same as the ambient temperature, the entire ejection head can be uniformly and accurately brought to a predetermined temperature. Therefore, it is possible to provide a droplet discharge device capable of precisely controlling the discharge amount.

In the present invention, it is preferable that a liquid tank for supplying a liquid to the droplet discharge head is arranged in the single temperature control space. Further, it is preferable that a liquid supply path provided between the liquid tank and the droplet discharge head is arranged in the single temperature control space. As a result, the temperature of the liquid can be controlled more precisely, and a droplet ejection device that can more precisely control the ejection amount can be provided.

According to the present invention, in a method of manufacturing a liquid crystal device including a pair of substrates and a liquid crystal material sandwiched between the substrates, a step of installing a sealing material on one of the substrates and the installation of this sealing material. The step of supplying the liquid crystal material to a substrate, and the step of disposing the other substrate opposite to the one substrate with the sealing material interposed therebetween, and the step of supplying the liquid crystal material comprises the steps of claim 1 to claim Provided is a method for manufacturing a liquid crystal device characterized by being formed by any one of the droplet discharge methods, and a liquid crystal display characterized by being manufactured by this manufacturing method. As a result, uniform and fine display can be realized, and a high quality liquid crystal display device can be manufactured.

The present invention also provides a liquid crystal device comprising a pair of substrates, a partition wall separating a region sandwiched by the pair of substrates into a plurality of pixel regions, and a liquid crystal material filled in each of the pixel regions. A manufacturing method, the step of forming the partition wall on one substrate, the step of supplying the liquid crystal material to each pixel region separated by the partition wall, the other substrate through the seal material And a step of arranging them to face each other,
A method of manufacturing a liquid crystal device, characterized in that the step of supplying the liquid crystal material is performed by the droplet discharge method according to any one of claims 1 to 3, and a method of manufacturing the liquid crystal device. And a liquid crystal display body. Thereby, the discharge amount of the liquid crystal material can be precisely controlled, and a high quality liquid crystal device can be manufactured.

The present invention also provides an electronic apparatus including the liquid crystal device. This makes it possible to provide an electronic device including a high-quality liquid crystal device.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described in detail. [First Embodiment] As a first embodiment, a droplet discharge device of the present invention will be described. As shown in FIG. 1, the droplet discharge device according to the present embodiment mainly includes a droplet discharge head 1.
, A liquid tank 2, a liquid supply path 3 provided between the liquid tank 2 and the ejection head 1, and a housing 4 for containing them.

A substrate mounting table (not shown) is provided in the housing 4 so that the substrate W can be mounted thereon, and the relative position between the substrate mounting table and the ejection head 1 is arbitrarily moved. A drive mechanism (not shown) is provided. In addition, an inlet 4a for hot air is provided above the housing 4.
However, discharge ports 4b are provided below the housing 4 so as to be separated from each other. A heater 5 is provided outside the inlet 4a.
Is attached, and the hot air heated by the heater 5 is introduced into the housing 4 by the fan 6.

Reference numeral 7 in the drawing is a pattern control device, which is composed of a personal computer or the like, and applies a drive signal to the ejection head 1 and
A position control signal is given to a drive mechanism for moving the relative position between the substrate mounting table and the ejection head 1.

The discharge head 1 has the same basic structure as that used in an ink jet printer or the like, and has, for example, the structure shown in FIG. As the ejection method of the ejection head 1, a piezo jet method in which a liquid is ejected by a change in the volume of a piezoelectric element or a method in which a liquid is ejected by suddenly generating bubbles due to application of heat may be used. .

When a droplet is discharged onto the substrate W by the droplet discharge device of this embodiment, first, the heater 5 and the fan 6 are operated to adjust the inside of the housing 4 to a predetermined temperature. Then, it takes a sufficient time for temperature adjustment so that the ejection head 1, the liquid tank 2, the liquid supply path 3, and all of the liquid inside these housed in the housing 4 reach the predetermined temperature. The droplet L is discharged from the discharge head 1 onto the substrate W.

According to the droplet discharge device of this embodiment, since the discharge head 1, the liquid tank 2, and the liquid supply path 3 are arranged in a single temperature control space formed by the housing 4, the discharge head 1, liquid tank 2, liquid supply path 3
And, all of the liquids inside them are precisely controlled to a uniform temperature equal to the ambient temperature, without becoming partially cold. Therefore, it is possible to precisely control the ejection amount of the droplet L ejected onto the substrate W.

[Second Embodiment] As a second embodiment, a liquid crystal device and a manufacturing method thereof according to the present invention will be described with reference to FIGS.
This will be described with reference to the process chart of FIG. 2 to 6,
(A) is a front view of each step, and (B) is a plan view of each step. FIG. 7 is a perspective view of the process shown in FIG. As shown in FIGS. 2 to 6, the method for manufacturing the liquid crystal device according to the present embodiment includes a substrate preparing step shown in FIG. 2, a sealing material installing step shown in FIG. 3, a liquid crystal discharging step shown in FIG. The bonding step and the sealing material curing step shown in FIG. 6 are included.

First, in the substrate preparing step, the pair of substrates 11,
12 (only FIG. 11 is shown in FIG. 2) is prepared, and electrodes and alignment films are provided on both of these substrates 11 and 12. As a material for the substrates 11 and 12, for example, transparent non-alkali glass or the like can be used. In addition, ITO (Indium Tin Oxide) or the like can be used as the material of the electrodes. In the case of a liquid crystal device capable of color display, a color filter is formed on one substrate. In the case of an active matrix liquid crystal device, a TFT (thin film transistor) or TFD (thin film diode) is formed on one substrate.

Next, in the sealing material installation step, as shown in FIG. 3, the sealing material 13 is installed on the four sides of the substrate 11. The sealing material 13 is installed around the substrate by a method such as screen printing. Although a commercially available adhesive can be used as the sealing material 13, it is preferable to use an adhesive in which gap holding particles are dispersed in order to maintain the thickness between the substrates and regulate the amount of liquid crystal. Further, as the adhesive used for the sealing material 13, a thermosetting adhesive or a photocurable adhesive can be preferably used.

Next, in the liquid crystal discharge step, the substrate 11 which has completed the seal material installation step is set as the substrate W in the droplet discharge device shown in FIG. Then, as shown in FIGS. 4 and 7, a droplet L of a liquid crystal material is ejected onto a region of the substrate 11 surrounded by the sealing material 13. Here, it is possible to form the liquid crystal layer 13 having a uniform thickness by keeping the discharge amount of the droplet L constant and moving the discharge head 1 and the substrate 11 relative to each other at a constant pitch each time they are discharged. Note that, in FIGS. 4 and 7, for convenience of illustration, only the ejection head 1 is shown among the constituent members of the droplet ejection device of the first embodiment.

Next, in the bonding step, as shown in FIG. 5, one substrate 11 is bonded to the other substrate 12 under vacuum. Next, in the sealing material curing step, the sealing material 1
When the adhesive used in 3 is a photo-curable adhesive, it is irradiated with ultraviolet light and cured as shown in FIG. Further, when the adhesive used for the sealing material 13 is a thermosetting adhesive, it is cured by heating. As a result, the liquid crystal device having the configuration shown in FIG. 6 is completed.

According to the method of manufacturing the liquid crystal device of this embodiment, the ejection head 1, the liquid tank 2, and the liquid supply path 3 are
Since the discharge head 1, the liquid tank 2, the liquid supply path 3 and all of the liquid inside these are arranged in a single temperature control space formed by the housing 4, the temperature may be partially lowered. Instead, it is precisely controlled to a uniform temperature equal to the ambient temperature. Therefore, the ejection amount of the liquid crystal droplets L ejected onto the substrate W can be precisely controlled. Therefore, the liquid crystal layer 13 having a uniform thickness can be formed.

Further, since the liquid crystal is arranged on the substrate 11 as the liquid droplets ejected from the ejection head 1, unlike the injection through the injection port, the liquid crystal is evenly distributed in a short time even in a large liquid crystal device. Can be filled. Therefore, according to the liquid crystal device of the present embodiment, a high quality and inexpensive liquid crystal device can be obtained.

[Third Embodiment] As a third embodiment, another liquid crystal device of the present invention and a manufacturing method thereof will be described.
FIG. 8 is a perspective view schematically showing the outer appearance of a liquid crystal panel as a liquid crystal device. In this figure, only some of the wiring patterns and input / output terminals are shown, and most of them are omitted. .

In FIG. 8, the liquid crystal panel 100 of this embodiment is shown.
Is for color liquid crystal devices installed in electronic devices such as mobile phones, and is made of transparent non-alkali glass.
Substrate 21 and second substrate 22 which is also made of transparent non-alkali glass or the like. A sealing material 23 containing a gap material is formed on one of these substrates by printing or the like, and the first substrate 21 and the second substrate 22 are bonded and fixed with a predetermined gap therebetween with the sealing material 23 interposed therebetween. ing. A cholesteric liquid crystal composition (liquid crystal material) is sealed in a sealed region 40 defined by the sealing material 23 in the gap between the first substrate 21 and the second substrate 22 as described later. There is. Here, since the cholesteric liquid crystal composition reflects light to display an image, for example, the second
When the light incident from the substrate 22 is emitted from the second substrate 22, the back surface of the first substrate 21 is coated with a black paint or the like as a light absorbing layer.

In the present embodiment, the first substrate 21 is larger than the second substrate 22, and when the second substrate 22 is overlaid on the first substrate 21, a part of the first substrate 21 is It projects from the lower edge of the second substrate 22. An IC mounting mounting area 39 is formed on the projecting portion so as to be adjacent to the enclosing area 40, and the driving IC 43 has a C
OG (Chip On Glass) is mounted. Further, on the lower edge side of the IC mounting area 39,
A plurality of input terminals 42 are formed along the edge of the first board 21 so as to be adjacent to the IC mounting area 39, and the flexible wiring board 29 is connected to these input terminals 42.

On the inner surface of the first substrate 21, a plurality of stripe-shaped electrodes 27 extending in the vertical direction inside the enclosed area 40 defined by the sealing material 23, and stripe-shaped electrodes 27 outside the enclosed area 40. Has an electrode pattern including a wiring portion (not shown) for wiring connection to the IC mounting area 39. This electrode pattern is ITO (Indi
um tin oxide) film or the like.

Further, on the inner surface of the second substrate 22, a plurality of stripe-shaped electrodes 26 extending in the lateral direction inside the enclosed region 40 divided by the sealing material 23 and partitioned and formed,
It has an electrode pattern including a wiring portion (not shown) for wiring and connecting the striped electrode 26 to each terminal outside the enclosing region 40. This electrode pattern is also formed of an ITO film or the like.

The first substrate 21 and the second substrate thus constructed
In a state where the substrate 22 and the substrate 22 are attached as shown in FIG.
The stripe-shaped electrode 27 of the first substrate 21 and the second substrate 2
The two stripe-shaped electrodes 26 intersect each other, and a plurality of pixels 25 are formed in a matrix at each intersection. The flexible wiring board 2 is attached to the driving IC 43.
When a signal and power are supplied via 9, the driving IC 4
3 controls the alignment state of the liquid crystal in each pixel by applying a voltage to a desired appropriate striped electrode 26, 27 and displays a desired image on the liquid crystal panel 100.

FIG. 9 is a plan view schematically showing the arrangement of the pixels and the cholesteric liquid crystal composition of the liquid crystal panel used in the liquid crystal device shown in FIG. 10 (A) and 10 (B) respectively show the liquid crystal panel used in the liquid crystal device shown in FIG.
FIG. 7 is a cross-sectional view taken along the line AA ′ and the line BB ′ of FIG.

In this embodiment, FIG. 9 and FIG.
The chiral pitch was adjusted so as to selectively reflect the lights of the predetermined colors R, G, and B, as indicated by R (red), G (green), and B (blue) in (A) and (B). Each pixel has a plurality of cholesteric liquid crystal compositions 8R, 8G, and 8B.
Are arranged in a mosaic pattern in a region corresponding to. That is, with the first substrate 21 and the second substrate 22 bonded together, the stripe-shaped electrode 27 provided on the first substrate 21 and the stripe-shaped electrode 2 provided on the second substrate 22.
6 is a region corresponding to each of the pixels 25, which intersect with each other to form a plurality of pixels 25 in a matrix.
A plurality of types of cholesteric liquid crystal compositions 8R, 8G, and 8B whose chiral pitch is adjusted are sandwiched in a gap of about 2 μm to about 10 μm depending on the application (if the gap is too narrow, it becomes dark, and if it is too wide, the driving voltage becomes too large. Higher). In addition, both the first substrate 21 and the second substrate 22,
Alignment films 101 and 102 are formed on the entire surface.

Therefore, if the alignment state of the cholesteric liquid crystal compositions 8R, 8G and 8B is controlled between the stripe-shaped electrode 27 of the first substrate 21 and the stripe-shaped electrode 26 of the second substrate 22, each pixel can be controlled. Light of a predetermined color is reflected by the 25 cholesteric liquid crystal compositions 8R, 8G, and 8B, so that a color image can be displayed without using a polarizing plate and a color filter. That is, when the cholesteric liquid crystal compositions 8R, 8G, and 8B are driven for each pixel 25 between the striped electrode 27 of the first substrate 21 and the striped electrode 26 of the second substrate 22, the cholesteric liquid crystal composition 8R is driven. , 8G, 8B can be controlled by a Grandjean structure that reflects light of a predetermined color corresponding to the chiral pitch and a nearly transparent focal conic structure, so that a predetermined color image can be displayed.

Here, each pixel 25 is surrounded by a partition wall 45 formed on the first substrate 21. As will be described below, this partition wall 45 is such that the cholesteric liquid crystal compositions 8R, 8G, 8B of the adjacent pixels 25 are not mixed with each other when the cholesteric liquid crystal compositions 8R, 8G, 8B are arranged at predetermined positions. A step is formed to prevent this. That is, the cholesteric liquid crystal compositions 8R, 8G, and 8B are arranged in the recess surrounded by the partition wall 45.

The arrangement of the cholesteric liquid crystal compositions 8R, 8G, and 8B for each pixel 25 is not limited to the mosaic shape as described above, but may be arranged in a stripe shape depending on the application. At that time, if the color of the cholesteric liquid crystal composition arranged in the adjacent pixels is the same and there is no fear of deterioration of display quality due to color mixture, it is possible to form no partition between the adjacent pixels.

Next, the liquid crystal panel 100 having such a configuration.
The manufacturing method of will be described. 11 (A) and 11 (B) are both schematic views showing how a cholesteric liquid crystal composition is discharged from a discharge head to a predetermined position on a first substrate when the liquid crystal panel shown in FIG. 8 is manufactured. 9A to 9C are cross-sectional views of various steps, each of which corresponds to a cross-sectional view of the first substrate taken along the line AA ′ and the line BB ′ of FIG. 9.

In this embodiment, as shown in FIGS. 11A and 11B, first, the stripe electrodes 26 and 27 are formed on the first substrate 21 and the second substrate 22, respectively, using a photolithography technique. An electrode pattern including is formed.
Next, the partition wall 45 is formed on the surface of the first substrate 21 so as to surround each pixel 25. Such a partition 45 can be formed of, for example, a photoresist.
That is, after applying the photoresist on the entire surface of the first substrate 21, the photoresist is exposed using a predetermined mask, and thereafter the photoresist is developed to leave the partition wall 45. Here, reliability can be improved by using a protective film material such as acrylic or polyimide other than the photoresist. On the other hand, the height of the partition wall 45 defines the layer thickness of the liquid crystal, and is set to about 2 μm to about 10 μm in this embodiment.

Next, a material such as soluble polyimide to be the alignment films 101 and 102 is applied and baked, and if necessary, the surface is subjected to an alignment treatment by rubbing or the like to form the alignment films 101 and 102.

On the other hand, a cholesteric liquid crystal composition 8R capable of selectively reflecting red (R), green (G) and blue (B) light by adding a predetermined amount of chiral component to the base liquid crystal. , 8G, 8B (chiral nematic liquid crystal) are prepared in advance. As the base liquid crystal, nematic liquid crystal such as cyano-based, fluorine-based, or ester-based liquid crystal can be used, and the chiral component is selected in consideration of solubility, twisting force, temperature dependence of pitch, and the like. Further, a cholesterol ester derivative or the like can be used as it is as the cholesteric liquid crystal. Furthermore, in the case of using the cholesteric liquid crystal containing a polymer, a photopolymerizable polymer precursor such as acrylate or methacrylate, or a thermosetting polymer precursor such as epoxy is pre-blended into the cholesteric liquid crystal, If necessary, a reaction initiator is added to prepare a cholesteric liquid crystal composition.

Next, on the region of the surface of the first substrate 21 surrounded by the partition wall 45, a predetermined cholesteric liquid crystal composition 8R is ejected from the ejection head 1 by using the droplet ejection device of FIG. , 8G, 8B are discharged. Here, from the ejection head 1 to the cholesteric liquid crystal composition 8R, 8G, 8B.
To discharge the liquid, the cholesteric liquid crystal composition 8R, 8
It is necessary to reduce the viscosity of G and 8B. Therefore, in the present embodiment, the temperature inside the housing 4 of the droplet discharge device in FIG. 1 is heated to a temperature at which the viscosity of the cholesteric liquid crystal compositions 8R, 8G, and 8B can be reduced, and in that state, the discharge head 1 is heated.
Discharge from. In this heated state, the cholesteric liquid crystal compositions 8R, 8G, and 8B have viscosities of 1 to 20c.
p, ideally 2 to 4 cp, and the surface energy at that time is 20 to 70 mN / m, ideally 30 to
Since it drops to 60 mN / m, it is possible to eject from the ejection head 1. Here, the cholesteric liquid crystal compositions 8R, 8G, and 8B may be heated to a temperature above the clearing point (NI point) at which the liquid crystal composition is isotropic.

Then, cholesteric liquid crystal compositions 8R and 8G are formed in the regions corresponding to the pixels 25 of the first substrate 21.
After each of 8B is discharged and applied, the sealing material 23 is applied around the first substrate 21, and then the first substrate 21 and the second substrate 22 are bonded together in a vacuum atmosphere.

According to the method of manufacturing the liquid crystal device of this embodiment, the ejection head 1, the liquid tank 2, and the liquid supply path 3 are
Since the discharge head 1, the liquid tank 2, the liquid supply path 3 and all of the liquid inside these are arranged in a single temperature control space formed by the housing 4, the temperature may be partially lowered. Instead, it is precisely controlled to a uniform temperature equal to the ambient temperature. Therefore, it is possible to precisely control the ejection amount of the droplets of the cholesteric liquid crystal compositions 8R, 8G, and 8B. Therefore, the cholesteric liquid crystal compositions 8R, 8G, and 8B having a uniform thickness are used for each pixel 25.
Can be formed.

Further, in this embodiment, since the ejection head 1 is used for disposing the cholesteric liquid crystal compositions 8R, 8G, 8B at predetermined positions, the first substrate 21 is used.
Cholesteric liquid crystal composition 8R, 8
G and 8B can be discharged. Therefore, the liquid crystal panel 100 (color liquid crystal device) can be manufactured in a small number of steps without complicating the structure.

Further, in this embodiment, the cholesteric liquid crystal compositions 8R, 8G, and 8B are ejected from the ejection head 1 into the concave portion surrounded by the partition wall 45 and having a depth of 2 μm to 10 μm, and are retained. The different colors of the cholesteric liquid crystal compositions 8R, 8G, and 8B of the pixel 25 are not mixed. Therefore, color mixing between the pixels 25 can be prevented, and high-quality display can be performed.

In the above embodiment, the first substrate 21
After forming the partition wall 45 on the surface of the alignment film 10, the alignment film 10 is formed on the surface.
No. 1 was formed, the alignment film 101 was formed on the surface of the first substrate 21.
After forming, the partition wall 45 may be formed on the surface thereof.
Further, a polymer precursor is previously mixed in the cholesteric liquid crystal compositions 8R, 8G, and 8B, the first substrate 21 and the second substrate 22 are bonded together, and then ultraviolet irradiation or heating is performed to increase the temperature. The orientation of the cholesteric liquid crystal compositions 8R, 8G, and 8B may be stabilized by polymerizing the molecular precursor. Alternatively, an active matrix liquid crystal device may be used in which a switching element such as a TFT (thin film transistor) or a TFD (thin film diode) is formed in each pixel region of one substrate to drive a liquid crystal material in each pixel region.

[Fourth Embodiment] As a fourth embodiment, specific examples of the electronic apparatus of the present invention will be described. 12
(A) is a perspective view showing an example of a mobile phone. Figure 1
In 2 (a), 600 indicates a mobile phone body, and 60
Reference numeral 1 denotes a liquid crystal display unit including the liquid crystal device of the second embodiment or the third embodiment. FIG. 12B shows a word processor,
It is a perspective view showing an example of a portable information processing device such as a personal computer. In FIG. 12B, 700 is an information processing device, 701 is an input unit such as a keyboard, 703 is an information processing main body, and 702 is a liquid crystal display unit including the liquid crystal device according to the second or third embodiment. There is. FIG. 12 (c)
FIG. 3 is a perspective view showing an example of a wrist watch type electronic device. In FIG. 11C, reference numeral 800 denotes a watch body, and 801
Shows a liquid crystal display unit including the liquid crystal device of the second embodiment or the third embodiment. Since the electronic devices shown in FIGS. 12A to 12C are equipped with the liquid crystal device of the above-described embodiment, defects such as disconnection and short circuit of wirings do not easily occur, and further, miniaturization and thinning are possible. It will be possible.

[0051]

As described above, according to the droplet discharge method and the droplet discharge apparatus of the present invention, the temperature of the discharge head and the like is made equal to the ambient temperature, so that the entire discharge head and the like are uniformly raised. The temperature can be accurately set to a predetermined value. Therefore, it is possible to provide a droplet discharge device capable of precisely controlling the discharge amount. Further, according to the liquid crystal device manufacturing method and the liquid crystal device of the present invention, uniform and clear display can be realized, and a high quality liquid crystal device can be obtained. Further, according to the electronic device of the invention, the electronic device can be provided with the liquid crystal device having excellent display performance.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a droplet discharge device according to a first embodiment.

FIG. 2 is a process drawing of the manufacturing method of the liquid crystal device according to the second embodiment.

FIG. 3 is a process drawing of the manufacturing method of the liquid crystal device according to the second embodiment.

FIG. 4 is a process drawing of the manufacturing method of the liquid crystal device according to the second embodiment.

FIG. 5 is a process drawing of the manufacturing method of the liquid crystal device according to the second embodiment.

FIG. 6 is a process drawing of the method of manufacturing a liquid crystal device according to the second embodiment.

FIG. 7 is a perspective view of the process shown in FIG.

FIG. 8 is a perspective view of a liquid crystal device according to a third embodiment.

9 is a plan view schematically showing the pixel arrangement of the liquid crystal panel of FIG.

10A and 10B are cross-sectional views of the liquid crystal panel shown in FIG. 8 taken along the line AA ′ and the line BB ′ in FIG. 9, respectively.

11A and 11B each show a state in which a cholesteric liquid crystal composition is discharged from a discharge head to a predetermined position on a first substrate when the liquid crystal panel shown in FIG. 8 is manufactured. FIG.

FIG. 12 is a perspective view showing an electronic device according to a fourth embodiment.

FIG. 13 is an exploded perspective view of an ejection head used in an inkjet device.

[Explanation of symbols]

1 Discharge head 2 liquid tank 3 Liquid supply route 4 housing 5 heater 6 fans 7 pattern control device W board

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G02B 5/20 101 G02F 1/1341 4F041 G02F 1/13 101 B41J 3/04 103A 1/1341 F term (reference) ) 2C057 AJ10 AM40 2H048 BA02 BA11 BA55 BA64 BB02 BB42 2H088 EA02 EA22 FA09 FA30 GA03 GA17 HA14 JA14 MA16 MA17 2H089 KA01 LA09 NA22 NA31 NA32 NA60 QA12 QA13 QA14 CA21 DC02 A05 AC06 AC02 CA21 AC02 AC21 AC02 CA21 AC02 CA21 AC02 AC21 AC02 AC02 AC06 AC02 AC02 AC06 AC02

Claims (11)

[Claims] 1. A droplet discharge method for discharging droplets from a droplet discharge head onto a substrate, wherein the droplet discharge head and the substrate are both controlled to have a predetermined temperature. A droplet discharge method characterized by arranging in a space. 2. The liquid droplet ejection method according to claim 1, further comprising disposing a liquid tank for supplying a liquid to the liquid droplet ejection head in the single temperature control space. 3. The liquid supply path provided between the liquid tank and the droplet discharge head is arranged in the single temperature control space. The method for ejecting liquid droplets according to. 4. A droplet discharge device for discharging droplets from a droplet discharge head onto a substrate, wherein the droplet discharge head and the substrate are both controlled to have a predetermined temperature. A droplet discharge device characterized by being arranged in a space. 5. The droplet discharge device according to claim 4, wherein a liquid tank for supplying a liquid to the droplet discharge head is arranged in the single temperature control space. 6. The liquid supply path provided between the liquid tank and the droplet discharge head is arranged in the single temperature control space. The droplet discharge device according to item 1. 7. A method of manufacturing a liquid crystal device including a pair of substrates and a liquid crystal material sandwiched between the substrates, wherein a step of installing a sealing material on one of the substrates and the step of installing the sealing material on the substrate. The step of supplying the liquid crystal material, the step of disposing the other substrate opposite to the one substrate with the sealant interposed therebetween, and the step of supplying the liquid crystal material is any one of claims 1 to 3. A method for manufacturing a liquid crystal device, which is performed by the droplet discharge method described above. 8. A method of manufacturing a liquid crystal device comprising a pair of substrates, a partition wall separating a region sandwiched by the pair of substrates into a plurality of pixel regions, and a liquid crystal material filled in each of the pixel regions. Then, the step of forming the partition wall on one substrate, the step of supplying the liquid crystal material to each pixel region separated by the partition wall, and the other substrate arranged to face the one substrate via a sealing material. A method of manufacturing a liquid crystal device, wherein the step of supplying the liquid crystal material is performed by the droplet discharge method according to any one of claims 1 to 3. 9. A liquid crystal device including a liquid crystal material sandwiched between a pair of substrates, which is manufactured by the method of manufacturing a liquid crystal device according to claim 7. 10. A liquid crystal device comprising a pair of substrates, a partition wall for partitioning a region sandwiched by the pair of substrates into a plurality of pixel regions, and a liquid crystal material filled in each of the pixel regions. A liquid crystal device manufactured by the method for manufacturing a liquid crystal device according to claim 8. 11. An electronic apparatus comprising the liquid crystal device according to claim 9 or 10.