CN201853031U - Color film substrate and liquid crystal display - Google Patents

Abstract

The utility model provides a color filter substrate and a liquid crystal display, wherein the color filter substrate includes a base substrate; a black matrix and a color resin layer are formed on the base substrate, and a black matrix and a color resin layer are formed on the black matrix and the color resin layer. A shielding layer, and the shielding layer is provided with capillary holes. In addition, a spacer can also be arranged on the color filter substrate, and the spacer and the shielding layer are of an integrated structure. The color filter substrate and liquid crystal display of the utility model set the shielding layer and the spacer into an integrated structure, and set capillary holes on the shielding layer, which solves the problem that the amount of liquid crystal injection is limited, and improves the allowable amount of liquid crystal. The error range means that the allowable injection amount of liquid crystal is increased, so that the deformation of the liquid crystal panel under the action of external force can be recovered more easily, avoiding the occurrence of light leakage, and improving the yield rate of the product.

Description

Color filter substrate and liquid crystal display

technical field

The utility model relates to liquid crystal display technology, in particular to a color filter substrate and a liquid crystal display.

Background technique

The display principle of the liquid crystal display is mainly to use an electric field to control the orientation of the liquid crystal molecules, and the anisotropy of the refractive index of the liquid crystal changes the transmittance to display. A liquid crystal display mainly includes several parts such as an array substrate, a color filter substrate, a backlight source, and a liquid crystal. Among them, the array substrate and the color filter substrate are in a box, and liquid crystals are filled between them.

Usually, the box forming process of the array substrate and the color filter substrate is carried out first, and the two substrates are shaped through the vacuum boxing process. The thickness of the box is controlled by a spacer arranged between the array substrate and the color filter substrate. Then, inject liquid crystal between the array substrate and the color filter substrate. In the process of injecting liquid crystal, it is necessary to pay attention to the amount of liquid crystal injected. Because when the amount of liquid crystal is small, the deformation of the liquid crystal panel under the action of external force is not easy to recover, and light leakage is easy to occur; and the larger the amount of liquid crystal, the corresponding shape of the panel changes under the action of external force. It is easy to restore and can reduce the occurrence of light leakage. Therefore, it is better to inject more liquid crystals.

However, due to the limitation of the structure of the liquid crystal display in the prior art, the liquid crystal injection amount cannot be too much, because, with the current structure of the liquid crystal display, when too much liquid crystal is injected into the liquid crystal panel, the liquid crystal will accumulate under the action of gravity, Liquid crystals will gather at the bottom of the liquid crystal panel due to the action of gravity, resulting in a phenomenon of uneven gravity (commonly called gravitational mura), resulting in light leakage. That is, the structure of the liquid crystal display in the prior art limits the amount of liquid crystal injection, so that too much liquid crystal cannot be injected, and the small amount of liquid crystal makes it difficult to restore the deformation of the liquid crystal panel under the action of external force.

Utility model content

The purpose of the utility model is to provide a color filter substrate and a liquid crystal display, which solves the problem that the amount of liquid crystal injection is limited, so that a large amount of liquid crystal can be injected, the deformation under the action of external force can be quickly restored, and the occurrence of light leakage can be avoided.

The utility model provides a color filter substrate, which includes a base substrate; a black matrix and a color resin layer are formed on the base substrate, a shielding layer is formed on the black matrix and the color resin layer, and the shielding layer Capillary holes are provided on it.

In the color filter substrate described above, a spacer is further formed on the shielding layer, and the spacer and the shielding layer are of an integrated structure.

In the color filter substrate described above, the capillary holes are arranged on the shielding layer at a position that is not opposite to the spacers.

As for the above-mentioned color filter substrate, the spacers are arranged at locations corresponding to the grid lines on the array substrate.

As for the above-mentioned color filter substrate, the spacers are arranged in positions corresponding to the gate electrodes on the array substrate.

As for the above-mentioned color filter substrate, the material of the shielding layer and the spacer is polyethylene glycol distearate.

As for the above-mentioned color filter substrate, the capillary holes are circular.

According to the above-mentioned color filter substrate, the diameter of the capillary hole is less than 1 micron.

The utility model provides a liquid crystal display, which comprises an array substrate and the color filter substrate described in the utility model. The array substrate and the color filter substrate are in a box, and liquid crystal is filled therebetween.

In the above-mentioned liquid crystal display, spacers are arranged on the color filter substrate, and the spacers are arranged opposite to the grid lines or grid electrodes on the array substrate.

The color filter substrate and liquid crystal display of the utility model set the shielding layer and the spacer into an integrated structure, and set capillary holes on the shielding layer, which solves the problem that the amount of liquid crystal injection is limited, and improves the allowable amount of liquid crystal. The error range means that the allowable injection amount of liquid crystal is increased, so that the deformation of the liquid crystal panel under the action of external force is easier to recover, avoiding the occurrence of light leakage, and improving the yield rate of the product.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the appended drawings in the following description The drawings show some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative work.

Figure 1 is a schematic structural view of an embodiment of the color filter substrate of the present invention;

Fig. 2 is a schematic diagram of capillary hole structure in an embodiment of the color filter substrate of the present invention;

Fig. 3 is a schematic diagram of a manufacturing method of an embodiment of the color filter substrate of the present invention;

Fig. 4 is a schematic diagram of the mold structure used in the production of the color filter substrate embodiment of the present invention;

Fig. 5 is a C-C cross-sectional view of Fig. 4;

FIG. 6 is a schematic structural diagram of an embodiment of the liquid crystal display of the present invention.

Explanation of reference signs:

11-substrate substrate; 12-black matrix; 13-color resin layer;

14-shielding layer; 15-spacer; 16-capillary hole;

17-nozzle; 18-prepolymer shielding layer; 19-the first slide rail;

20-Second slide rail; 21-Mould column; 22-Embedded rod;

23-groove; 24-array substrate; 25-color film substrate;

26-liquid crystal; 27-gate electrode.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described implementation Example is a part of embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The main technical solution of the utility model is that the spacer and the shielding layer are arranged in an integrated structure, so that when the amount of liquid crystal in the liquid crystal panel is large, the integrated structure can effectively prevent the liquid crystal from flowing downward due to the action of gravity and be trapped in the liquid crystal panel. The gravitational Mura phenomenon caused by aggregation at the bottom; at the same time, setting a capillary hole structure on the shielding layer can improve the fluidity of the liquid crystal when the liquid crystal panel is aligned. Avoid uneven distribution of liquid crystal between the array substrate and the color filter substrate, and avoid light leakage.

The technical solutions of the present utility model will be described in further detail below with reference to the accompanying drawings and specific embodiments.

Figure 1 is a schematic structural view of an embodiment of the color filter substrate of the present invention, as shown in Figure 1, the color filter substrate of this embodiment may include a base substrate 11, a black matrix 12 formed on the base substrate 11 and a color resin layer 13 ; the shielding layer 14 and the spacer 15 are disposed on the black matrix 12 and the color resin layer 13 .

In this embodiment, the shielding layer 14 and the spacer 15 are in an integrated structure, and the material of the integrated structure is resin, such as polyethylene glycol distearate. In a specific implementation, the location of the spacer 15 may correspond to the gate line on the array substrate, or may correspond to the gate electrode.

By setting the shielding layer 14 and the spacer 15 as an integrated structure, the process steps can be reduced, and the shielding layer 14 can block the downward flow of liquid crystals to a certain extent, and can effectively reduce the The aggregation of liquid crystals due to the action of gravity blocks the liquid crystals to a certain extent, avoids the uneven gravity caused by the downward flow of liquid crystals due to the action of gravity, and increases the allowable error range of the amount of liquid crystals. The allowable error range refers to What is important is the liquid crystal volume area between the liquid crystal volume when the gravity unevenness (gravity Mura) caused by the accumulation of liquid crystal under the action of gravity due to too much liquid crystal volume and the liquid crystal volume where low-temperature bubbles occur due to too little liquid crystal volume, that is, it can be compared More liquid crystals are injected into the existing technology, so that the deformation of the liquid crystal panel due to external force can be recovered more easily and quickly.

In this embodiment, the shielding layer 14 is further provided with capillary holes 16 for improving the liquid crystal fluidity during the cell alignment process. The capillary hole 16 is a small capillary with a certain thickness and diameter, and is a conduction structure in the shielding layer 14 . The flow of liquid crystal due to the action of gravity will be blocked at this relatively thick shielding layer position; however, since the shielding layer 14 has the capillary hole 16, some liquid crystals will still pass through, which will not cause excessive accumulation of liquid crystals at this position .

In addition, setting the capillary holes 16 on the shielding layer has the advantage of being easy to shape without affecting the uniformity of the box thickness. In a specific implementation, as shown in FIG. 1 , the capillary hole 16 may be disposed on the shielding layer 14 at a position that is not opposite to the spacer 15 .

Wherein, the structure of the capillary hole 16 can be referred to as shown in FIG. 2 , which is a schematic diagram of the structure of the capillary hole in an embodiment of the color filter substrate of the present invention. The capillary holes 16 are circular, for example, with a diameter of less than 1 micron. Because the diameter of the capillary hole 16 is very small, the effect of capillary action in the hole is obvious. In a specific implementation, the capillary hole 16 is not limited to a circle, for example, it may be a square, a polygon, an ellipse, etc., as long as the cross-sectional size is small so that the effect of capillary action in the hole is obvious.

As shown in Figure 2, during the process of the array substrate and the color filter substrate being aligned, the extrusion of the liquid crystal allows the liquid crystal to pass through the capillary hole 16, ensuring the fluidity of the liquid crystal in the liquid crystal cell; The hydrophilicity of the fatty acid ester, when the liquid crystal panel is placed vertically, the liquid crystal forms the capillary phenomenon shown in Figure 2 inside the capillary hole 16, and the liquid crystal resists the gravity of the liquid crystal due to the capillary force, and finally the liquid crystal will not A downward flow is generated, which avoids the uneven gravity. The calculation formula of the liquid crystal height H in Fig. 2 is as follows:

H＝2σcosΘ/Rgr................................(1)

In the formula, Θ is the contact angle, σ is the surface tension, r is the groove diameter formed by capillary action, R is the meniscus radius, and H is the liquid crystal wetting height.

As a changeable form, only the shielding layer 14 can be provided on the color filter substrate, and the shielding layer 14 can be directly arranged corresponding to the grid lines, so as to function as a spacer without additional spacers.

The following is a brief description of the manufacturing method of the color filter substrate of this embodiment:

Fig. 3 is the schematic diagram of the manufacturing method of the color filter substrate embodiment of the present invention, as shown in Fig. 3, first form black matrix 12 and color resin layer 13 on base substrate 11, and this color resin layer 13 can comprise R, G , B sub-pixel layer. Then, on the black matrix 12 and the color resin layer 13, a prepolymer shielding layer 18 can be coated by printing or spraying with a nozzle 17, the shape of the prepolymer shielding layer 18 and the grid pattern on the array substrate Correspondingly, the resin used in the prepolymer shielding layer 18 may be polyethylene glycol distearate liquid prepolymer. In addition, if the color filter substrate is also provided with a protective layer, the protective layer can be formed on the base substrate 11 first, and then the above-mentioned prepolymer shielding layer 18 is formed on the protective layer. The material of the prepolymer shielding layer 18 Can be the same as the protection layer.

Next, a mold can be used to form an integrated structure of the shielding layer 14 , spacers 15 and capillary holes 16 on the printed prepolymer shielding layer 18 at one time. Specifically, the mold used in the implementation can be referred to FIG. 4 , which is a structural schematic diagram of the mold used in the production of the color filter substrate embodiment of the present invention. The mold is illustrated by taking the spacer 15 corresponding to the grid line as an example. It can be a rubber mold, mainly including the first slide rail 19, the second slide rail 20, and the first slide rail 19 and the slide rail 20. Several mold rows 21 between the second slide rails 20 .

The mold row 21 is mainly provided with embedded rods 22 for forming capillary holes 16 and grooves 23 for forming spacers 15 . Moreover, the mold row 21 includes two parts A and B that are joined together, which can facilitate mold opening by cooperating with the above-mentioned slide rails (the arrows in the figure indicate the mold opening direction). The pre-embedded rod 22 and the groove 23 are also equally divided into two parts, located in parts A and B respectively. FIG. 5 is a sectional view taken along line C-C of FIG. 4 , from which the structure of the die row 21 can be clearly seen.

Press the above-mentioned rubber mold into the prepolymer shielding layer 18, wherein the positions of several mold rows 21 on the mold correspond to the positions of the grid lines on the array substrate during pressing, and each mold row 21 corresponds to a grid line . The resin of the prepolymer barrier layer 18 can flow into the mold under the action of capillary stress. The resin enters the groove 23 through capillary action to form a spacer 15 ; meanwhile, capillary holes 16 can be formed at the position of the pre-embedded rod 22 . Under the condition of heating, after the resin is solidified, the A and B parts of the mold row 21 are opened through the first slide rail 19 and the second slide rail 20, and the shielding layer 14, the spacer 15 and the capillary hole 16 can be formed at one time. integrated structure.

By adopting the above-mentioned integral molding method to provide the shielding layer and the spacer, compared with the prior art, one mask process can be saved, the manufacturing process of the color filter substrate is greatly simplified, the production efficiency is improved, and the production cost is reduced.

The color filter substrate of this embodiment solves the problem of limited liquid crystal injection amount by setting the shielding layer and the spacer into an integrated structure, and setting capillary holes on the shielding layer, and improves the allowable error range of the liquid crystal quantity , that is, the allowable injection amount of liquid crystal is increased, so that the deformation of the liquid crystal panel under the action of external force is easier to recover, avoiding the occurrence of light leakage, and improving the yield of the product; in addition, it also effectively avoids liquid crystal flow due to gravity. The gravity is not uniform, and the liquid crystal flow distribution in the process of box alignment is more uniform.

As a changeable form, only the shielding layer 14 can be provided on the color filter substrate, and the shielding layer 14 can be directly arranged corresponding to the grid lines, so as to function as a spacer without additional spacers.

The embodiment of the present utility model also provides a liquid crystal display, see FIG. 6 , which is a schematic structural diagram of an embodiment of the liquid crystal display of the present utility model. The liquid crystal display may include an array substrate 24 and a color filter substrate 25 in a cell, and a liquid crystal 26 is filled between the array substrate 24 and the color filter substrate 25 .

Wherein, the color filter substrate 25 can adopt the color filter substrate described in any embodiment of the present invention, the spacers 15 on the color filter substrate 25 can be opposite to the grid lines on the array substrate 24, and the spacers 15 can be connected to Some of the gate lines on the array substrate 24 are opposite to each other. In addition, the disposition position of the spacer 15 may also correspond to the gate electrode 27 on the array substrate. FIG. 6 shows the situation corresponding to the gate electrode.

In the liquid crystal display of this embodiment, the shielding layer and the spacer on the color filter substrate are provided as an integrated structure, and the capillary holes are arranged on the shielding layer, so as to solve the problem that the amount of liquid crystal injection is limited, and improve the liquid crystal amount. The allowable error range, that is, the allowable injection amount of liquid crystal is increased, so that the deformation of the liquid crystal panel under the action of external force is easier to recover, avoiding light leakage, and improving the yield of the product; in addition, it also effectively avoids liquid crystal due to gravity. The uneven gravity caused by the action flow makes the liquid crystal flow distribution more uniform in the process of box alignment.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit of the technical solutions of the various embodiments of the present invention. and range.

Claims (10)

1. a color membrane substrates is characterized in that, comprises underlay substrate; Be formed with black matrix and color resin layer on the described underlay substrate, be formed with barrier bed on described black matrix and the color resin layer, described barrier bed is provided with the capillary hole.

2. color membrane substrates according to claim 1 is characterized in that, also is formed with chock insulator matter on the described barrier bed, and described chock insulator matter and barrier bed are integral structure.

3. color membrane substrates according to claim 2 is characterized in that, described capillary hole is arranged on not relative with the chock insulator matter position on the described barrier bed.

4. color membrane substrates according to claim 2 is characterized in that, described chock insulator matter that the position is set is corresponding with grid line on the array base palte.

5. color membrane substrates according to claim 2 is characterized in that, described chock insulator matter that the position is set is also corresponding with gate electrode on the array base palte.

6. color membrane substrates according to claim 2 is characterized in that, the material of described barrier bed and chock insulator matter is a polyglycol distearyl acid fat.

7. color membrane substrates according to claim 1 is characterized in that, described capillary hole is circular.

8. color membrane substrates according to claim 7 is characterized in that the diameter of described capillary hole is less than 1 micron.

9. a LCD is characterized in that, comprises the arbitrary described color membrane substrates of array base palte and claim 1-8, and described array base palte and color membrane substrates are filled with liquid crystal therebetween to box.

10. LCD according to claim 9 is characterized in that described color membrane substrates is provided with chock insulator matter, and grid line or gate electrode on described chock insulator matter and the described array base palte are oppositely arranged.

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