CN101794019B - Injecting screen for electric wet-type display and injecting process - Google Patents

Abstract

The invention discloses an injecting screen for an electric wet-type display and an injecting process. The injecting screen comprises a screen body, and the bottom face of the screen body is provided with embedding bodies which correspond to each pixel of the electric wet-type display one by one and can be embedded into the pixels; injecting holes are arranged in each embedding body, downward extend to the bottom face of the corresponding embedding body, and upwards extend to the top of the screen body. The injecting process comprises the following steps of: firstly, matching and installing the injecting screen and a retaining wall of the electric wet-type display; converting nonpolar printing ink to be injected into solid from liquid, and fully filling corresponding injecting holes with the solid nonpolar printing ink; finally, converting the nonpolar printing ink into liquid by raising the temperature. By using the injecting screen and filling the nonpolar printing ink with similar screen printing methods, the quantity of the nonpolar printing ink injected into each pixel can be controlled by controlling the volume of each injecting hole.

Description

The injection half tone of electric wet-type display and injection processing procedure

Technical field

The present invention relates to the improvement of electric wet-type display processing procedure, relate in particular to a kind of when injecting nonpolar printing ink employed injection half tone, and the method for utilizing this this nonpolar printing ink of injections half tone injection.

Background technology

As shown in Figure 1, the structure of electric wet-type display comprises lower floor's display body 20, upper strata display body and frame glue 28 substantially; Wherein, said lower floor display body 20 is followed successively by barricade 22, hydrophobicity insulation course 233, lower electrode 232 and following laminar substrate 231 from top to bottom, and said hydrophobicity insulation course 233 then generally includes insulation course and is formed at the hydrophobic layer on the said insulation course.As shown in Figure 2; Said barricade 22 can be processed through methods such as etchings by the barricade body, makes to form in the barricade 22 a plurality ofly to be certain regularly arranged pane body, and then forms a plurality of pixels 21 of electric wet-type display; Usually, said pixel 21 is the matrix form arrangement of rule; The nonpolar printing ink of different colours inject respectively with corresponding pixel 21 separately in; The nonpolar printing ink 26 that promptly is positioned on the said hydrophobicity insulation course 233 is surrounded by said barricade 22; So; Can avoid phase mutual interference between the nonpolar printing ink 26 in the different pixels 21, then be polar water solution 27 on the said nonpolar printing ink 26.Said upper strata display body comprises the upper electrode 25 that directly contacts with said polar water solution 27 and is formed at the top substrate layer 24 on the said upper electrode 25.Seal through said frame glue 28 at periphery between said lower floor display body 20 and the upper strata display body.

The General Principle of electric moistening technology is described through a pixel at present; Under the situation of the no extra electric field effect shown in Fig. 3 a; Nonpolar printing ink 26 can be scattered on the surface of hydrophobicity insulation course 233 naturally; At this moment, this pixel will present its inner nonpolar printing ink 233 color to the beholder; Relatively; Shown in Fig. 3 b, applying under the situation of electric field through upper electrode 25 and lower electrode 232; The electric charge that produces on the hydrophobicity insulation course 233 can increase it to be ordered about nonpolar printing ink 233 and shrinks to same direction the affinity of polar water solution 27; At this moment, this pixel will present the color of laminar substrate 231 down.

Hence one can see that; Whether can control the amount (the mentioned amount of this paper all refers to volume) of injecting the nonpolar printing ink 233 in each pixel 21 accurately is the key issue that guarantees the electric wet-type display performance; For example; Present technology is that the amount of the nonpolar printing ink 233 in each pixel 21 of requirement injection is all identical, to guarantee the homogeneity of electric wet-type display.At present; The general ink jet printing method that adopts is coated with nonpolar printing ink 233, and this kind method exists control procedure complicated higher with the spraying cost, and aspect homogeneity, is difficult to problem such as control; Therefore, demand developing a kind of precision height and low method of injection cost injected urgently.

Summary of the invention

One object of the present invention is to provide a kind of and injects the precision height and inject the low injection half tone of cost.

The technical scheme that the present invention adopted is: a kind of injection half tone of electric wet-type display; Comprise the half tone body, the bottom surface of said half tone body be provided with each pixel of said electric wet-type display one to one and can embed the inner embedded body of said pixel; The inside of each embedded body is provided with filling orifice, and said filling orifice extends downward and the bottom surface of corresponding embedded body separately, extends upward to the end face of said half tone body.

Preferably, the volume of the filling orifice on described each embedded body all equates.

Preferably, said filling orifice is shaped as rectangular parallelepiped.

Another object of the present invention provides a kind of injection processing procedure that utilizes above-mentioned injection half tone to inject nonpolar printing ink, it is characterized in that: comprise the steps,

The first step is installed togather the barricade of said injection half tone and electric wet-type display, at this moment, all corresponding inside that embeds each pixel of said embedded body, said half tone body then is supported on the said barricade;

Second step was converted into nonpolar printing ink to be injected and solidifies attitude by liquid state, and will be in the nonpolar printing ink that solidifies attitude fill up with corresponding filling orifice separately in;

In the 3rd step, make the nonpolar printing ink that solidifies attitude be converted into liquid state again through rising again;

In the 4th step, take off the injection half tone from said barricade.

Beneficial effect of the present invention is: utilize injection half tone of the present invention; Adopt the method for similar screen painting to inject nonpolar printing ink; Can control the amount of injecting the nonpolar printing ink in each pixel accurately through the volume of control filling orifice, and injection half tone according to the invention has also and the low characteristics of cost of manufacture simple in structure.

Description of drawings

Fig. 1 shows the general structure of electric wet-type display;

Fig. 2 is the perspective view of lower floor's display body shown in Figure 1;

Fig. 3 a and 3b show pixel shown in Figure 1 respectively and are not applying electric field and applying state under the electric field situation;

Fig. 4 is the perspective view of injection half tone according to the invention;

Fig. 5 a, 5b and 5c are respectively front view, rear view and the side view of injection half tone shown in Figure 4;

Fig. 6 is the structural representation that injection half tone shown in Figure 4 and lower floor shown in Figure 2 display body are combined together;

Fig. 7 is the blast structural representation of Fig. 6;

Fig. 8 is the fit structure that shows injection half tone shown in Figure 4 and lower floor shown in Figure 2 display body.

Embodiment

Like Fig. 4, and shown in Fig. 5 a, 5b and the 5c, injection half tone 10 according to the invention comprises half tone body 11, the bottom surface of said half tone body 11 be provided with pixel as shown in Figure 2 21 one to one and can embed the inner embedded body 13 of said pixel; The inside of each embedded body 13 is provided with filling orifice 12, and said filling orifice 12 extends downward and the bottom surface of corresponding embedded body separately, extends upward to the end face of said half tone body 11.Said half tone body 11 can be formed in one with embedded body 13.

Because the size of control filling orifice 12 accomplishes very easily, therefore, can be according to the volume that inject to require each filling orifice of control, and then the amount of the nonpolar printing ink in the respective pixel 21 is injected in control accurately.For example, according to present processing procedure requirement, need inject isopyknic nonpolar printing ink for each pixel 21, under this condition, the volume that only needs to guarantee the filling orifice 12 on each embedded body 13 all equates to get final product.

In addition, the shape of said filling orifice 12 is not had particular restriction, in the embodiment shown in Fig. 5 a, 5b and 5c, said filling orifice be shaped as rectangular parallelepiped, and xsect is a square; Certain said filling orifice 12 also can be designed as shapes such as triangular prism, cylinder or round platform.

When utilizing injection half tone 10 according to the invention to inject nonpolar printing ink; At first injection half tone 10 according to the invention is installed togather with lower floor's display body 20 shown in Figure 2; Be about to said injection half tone 10 cooperations and be installed on the barricade 22, at this moment, like Fig. 6, shown in 7 and 8; The all corresponding inside that embeds each pixel 21 of said embedded body 13; Said half tone body 11 then is supported on the said barricade 22, at this, can have small gap between the bottom surface of said embedded body 13 and the hydrophobicity insulation course 233; Then; Under cryogenic conditions; Nonpolar printing ink to be injected is converted into by liquid state solidifies attitude, and will be in the nonpolar printing ink that solidifies attitude fill up with corresponding filling orifice 12 separately in, as through method of printing with said nonpolar printing ink be filled to each self-corresponding filling orifice 12 in.

When accomplishing above-mentioned implantation step; Make said nonpolar printing ink again by solidifying after attitude is converted into liquid state through rising again; Take off said injection half tone 10 again; Just can accomplish successive process according to existing method, promptly accomplish the processing procedure that adds the upper strata display body and upper strata display body and lower floor's display body are sealed.

Hence one can see that; Said injection half tone 10 can be controlled nonpolar printing ink and be in the volume that solidifies attitude, and the non-polar oil China ink by solidify attitude when being converted into liquid state quality can not change, therefore; The volume of filling orifice 12 is directly proportional with the amount that needs to inject the nonpolar printing ink in the respective pixel, that is:

$V_1=\frac{{\mathrm{\ρ}}_2}{{\mathrm{\ρ}}_1}\×V_2$

Wherein, V ₁Volume (being in the volume that solidifies attitude with nonpolar printing ink equates) for filling orifice; V ₂Volume for the nonpolar printing ink in the required injection respective pixel; ρ ₂For nonpolar printing ink is in liquid density; ρ ₁Be in the density of solidifying attitude for nonpolar printing ink.So, can calculate and the volume of corresponding filling orifice separately to each pixel, to realize control accurately.

It should be noted that; In order to control the volume of printing ink effectively, implantation step need carry out in polar water solution, therefore; Need guarantee under low-temperature condition; Nonpolar printing ink reaches the temperature of solidifying attitude and is higher than polar water solution and reaches the temperature of solidifying attitude, for addressing this problem, can in polar water solution or nonpolar printing ink, inject corresponding additive.Owing to of the present inventionly focus on how controlling the amount of injecting the nonpolar printing ink in each pixel, therefore, reach the temperature of solidifying attitude and do not give unnecessary details at this for how making nonpolar printing ink reach to solidify the temperature of attitude to be higher than polar water solution.

Being merely preferred embodiment of the present invention in sum, is not to be used for limiting practical range of the present invention.Be that all equivalences of doing according to the content of claim of the present invention change and modification, all should belong to technological category of the present invention.

Claims (4)

1. the injection half tone of an electric wet-type display is characterized in that: comprise the half tone body, the bottom surface of said half tone body be provided with each pixel of said electric wet-type display one to one and can embed the inner embedded body of said pixel; The inside of each embedded body is provided with and is used to control the filling orifice that injects nonpolar printing ink volume in the respective pixel; The volume of said filling orifice is directly proportional with the volume that needs to inject the nonpolar printing ink in the respective pixel; Said filling orifice extends downward and the bottom surface of corresponding embedded body separately, extends upward to the end face of said half tone body.

2. injection half tone according to claim 1 is characterized in that: the volume of the filling orifice on described each embedded body all equates.

3. injection half tone according to claim 1 and 2 is characterized in that: said filling orifice be shaped as rectangular parallelepiped.

4. injection processing procedure that utilizes the described injection half tone of claim 1 to inject nonpolar printing ink is characterized in that: comprises the steps,

The first step is installed togather the barricade of said injection half tone and electric wet-type display, at this moment, all corresponding inside that embeds each pixel of said embedded body, said half tone body then is supported on the said barricade;

Second step was converted into nonpolar printing ink to be injected and solidifies attitude by liquid state, and will be in the nonpolar printing ink that solidifies attitude and be filled in the corresponding separately filling orifice;

In the 3rd step, make the nonpolar printing ink that solidifies attitude be converted into liquid state again through rising again;

In the 4th step, take off the injection half tone from said barricade.

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