CN105652527A - Color film substrate, manufacture method thereof and display device - Google Patents

Abstract

The invention provides a color filter substrate, comprising a color filter layer, a plurality of main spacers and a plurality of auxiliary spacers, the main spacers are located on the color filter layer, and the position of the color filter layer corresponds to the auxiliary spacers A placement hole is formed, and the lower part of the auxiliary spacer is located in the placement hole on the color filter layer, so that the distance between the top of the main spacer and the surface of the color filter layer is greater than the distance between the top of the auxiliary spacer and the color filter layer. distance between the surfaces. The invention also provides a display device and a manufacturing method of the color filter substrate. The main spacer and the auxiliary spacer are formed simultaneously in the same patterning process. Since the lower part of the auxiliary spacer is located in the placement hole, the height of the top of the auxiliary spacer is smaller than that of the main spacer. When forming spacers, there is no need to use half-tone mask plates with different transmittances, and only need to form installation holes on the color filter layer, thereby reducing the cost of manufacturing the color filter substrate.

Description

Color filter substrate, manufacturing method thereof, and display device

technical field

The present invention relates to the field of display devices, in particular to a color filter substrate, a method for manufacturing the color filter substrate, and a display device including the color filter substrate.

Background technique

The liquid crystal display device includes a color filter substrate and an array substrate arranged opposite to the color filter substrate. In order to maintain the cell thickness of the liquid crystal display device, spacers need to be provided between the color filter substrate and the array substrate. The spacers include main spacers and auxiliary spacers, and the height of the main spacers is greater than that of the auxiliary spacers. Generally, the main spacers and the auxiliary spacers can be formed using a halftone mask.

Contents of the invention

The object of the present invention is to provide a color filter substrate, a manufacturing method of the color filter substrate and a display device including the color filter substrate, and main spacers and spacers with different heights can be formed on the color filter substrate by the manufacturing method. Auxiliary spacer.

In order to achieve the above object, as one aspect of the present invention, a color filter substrate is provided, the color filter substrate includes a color filter layer, a plurality of main spacers and a plurality of auxiliary spacers, wherein the main spacers The object is located on the color filter layer, and a placement hole is formed on the color filter layer corresponding to the position of the auxiliary spacer, and the lower part of the auxiliary spacer is located in the placement hole on the color filter layer, Such that the distance between the top of the main spacer and the surface of the color filter layer is greater than the distance between the top of the auxiliary spacer and the surface of the color filter layer.

Preferably, the color filter layer includes a color-resist layer and a transparent planarization layer formed on the color-resist layer, and the main spacer is formed on the transparent planarization layer.

Preferably, the installation holes are formed on the transparent planarization layer.

Preferably, a groove is formed on the color-resisting layer corresponding to the position of the auxiliary spacer, and the material of the transparent planarization layer falls into the groove to form the placement hole.

Preferably, the settling hole includes a first settling hole portion penetrating through the transparent planarizing layer and a second settling hole portion formed in the color resist layer and aligned with the first settling hole portion.

As another aspect of the present invention, a display device is provided, and the display device includes a color filter substrate, wherein the color filter substrate is the above-mentioned color filter substrate provided by the present invention.

As yet another aspect of the present invention, a method for manufacturing a color filter substrate is provided, wherein the method includes:

forming a color filter layer and a plurality of placement holes, the positions of the placement holes correspond to the positions of the auxiliary spacers;

A plurality of main spacers and a plurality of the auxiliary spacers are formed, the lower portions of the auxiliary spacers being located in the seating holes.

Preferably, the step of forming the color filter layer and the plurality of placement holes includes:

Form a color resist layer;

forming grooves on the color resist layer at positions corresponding to the auxiliary spacers;

A transparent material layer is formed, and the material of the transparent material layer falls into the groove to form the placement hole.

Preferably, the step of forming the color filter layer and the plurality of placement holes includes:

Form a color resist layer;

forming a transparent planarization layer;

The placement holes are formed on the transparent planarization layer.

Preferably, the step of forming the color filter layer and the plurality of placement holes includes:

Form a color resist layer;

forming a transparent planarization layer;

A placement hole is formed through the transparent planarization layer and through at least a portion of the color resist layer.

The main spacer and the auxiliary spacer are simultaneously formed in the same patterning process, and since the lower part of the auxiliary spacer is located in the placement hole, the height of the top of the auxiliary spacer is smaller than that of the main spacer . When forming the spacers, there is no need to use half-tone masks with different transmittances, and only the placement holes need to be formed on the color filter layer, thereby reducing the cost of manufacturing the color filter substrate.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, together with the following specific embodiments, are used to explain the present invention, but do not constitute a limitation to the present invention. In the attached picture:

Fig. 1 is the first embodiment of the color filter substrate provided by the present invention;

Fig. 2 is the second embodiment of the color filter substrate provided by the present invention;

Fig. 3 is a third embodiment of the color filter substrate provided by the present invention.

Explanation of reference signs

110: main spacer 120: auxiliary spacer

200: color filter layer 210: color resist layer

220: transparent planarization layer 300: black matrix

400: transparent substrate

detailed description

Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

It is easy to understand that, in the present invention, the words "up, down", "high, low", etc. representing orientation are the orientations in Fig. 1 to Fig. 3 .

As one aspect of the present invention, a color filter substrate is provided. As shown in FIG. 1 , the color filter substrate includes a color filter layer 200, a plurality of main spacers 110 and a plurality of auxiliary spacers 120, wherein the main The spacer 110 is located on the color filter layer 200, and a placement hole is formed on the color filter layer 200 corresponding to the position of the auxiliary spacer 120, and the lower part of the auxiliary spacer 120 is located in the placement hole on the color filter layer 200, so that The distance D1 between the main spacer 110 and the surface of the color filter layer 200 is greater than the distance D2 between the auxiliary spacer 120 and the surface of the color filter layer 200 .

The main spacer 110 and the auxiliary spacer 120 are simultaneously formed in the same patterning process, and since the lower part of the auxiliary spacer 120 is located in the placement hole, the height of the top of the auxiliary spacer 120 is smaller than that of the main spacer. The top height of object 110. When forming the spacers, there is no need to use half-tone masks with different transmittances, and only the placement holes need to be formed on the color filter layer, thereby reducing the cost of manufacturing the color filter substrate. Moreover, it is possible to control the depth of the installation holes to adjust the height difference between the main spacer 110 and the auxiliary spacer 120 , so that the color filter substrate provided by the present invention is suitable for display devices of various sizes.

It is easy to understand that the color filter substrate may also include a black matrix 300 and a transparent substrate 400 . Since the black matrix and the transparent substrate 400 are well known in the art, the descriptions thereof will not be repeated here.

In the color filter layer, the number of main spacers 110 and the number of auxiliary spacers 120 are multiple. For example, in the color filter substrate of a 21.5-inch display device, one main spacer is provided for every 18 pixel units, and four auxiliary spacers are provided for every 18 pixel units. In the color filter substrate of a 22-inch display device, one main spacer is arranged in every 21 pixel units, and 19 auxiliary spacers are arranged in every 21 pixel units.

On the color filter substrate provided by the present invention, the heights of the plurality of auxiliary spacers may be different. The final distance between the top of the auxiliary spacer and the upper surface of the color filter layer can be determined by setting the depth of the installation hole corresponding to each auxiliary spacer.

Preferably, other parts of the upper surface of the color filter layer 200 except the placement holes should be flat, so as to facilitate obtaining the main spacer 110 with a consistent height. As a specific implementation manner, the color filter layer 200 includes a color resist layer 210 and a transparent planarization layer 220 formed on the color resist layer 210 , and the main spacers 110 are formed on the transparent planarization layer 220 . The color-resist layer may include a plurality of color-resist blocks, and the color-resist blocks include a red color-resist block R, a blue color-resist block B, and a green color-resist block (not shown).

In the present invention, the final depth of the installation hole is determined by the designed height difference between the auxiliary spacer 120 and the main spacer 110 . When the designed height difference is smaller than the thickness of the planarization layer 220, as shown in FIG. layer 220.

As a second embodiment of the present invention, as shown in FIG. 2 , grooves can be formed on the color-resist layer 210 corresponding to the positions of the auxiliary spacers 120 , and the material of the transparent planarization layer 220 falls into the grooves. , to form the placement hole.

When the designed height difference is greater than the thickness of the planarization layer 220, as shown in FIG. A second installation hole part in the color resist layer 210 and aligned with the first installation hole part.

As another aspect of the present invention, a display device is provided, and the display device includes a color filter substrate, wherein the color filter substrate is the above-mentioned color filter substrate provided by the present invention.

Since the manufacturing cost of the color filter substrate is low, the cost of the display device is correspondingly low.

As yet another aspect of the present invention, a method for manufacturing the above-mentioned color filter substrate is provided, wherein the method includes:

forming a color filter layer and placement holes, the positions of the placement holes correspond to the positions of the auxiliary spacers;

A main spacer and the auxiliary spacer are formed, and a lower portion of the auxiliary spacer is located in the seating hole.

It is easy to understand that the color filter layer is provided on a transparent substrate. The color filter substrate also includes a black matrix, therefore, the manufacturing method further includes a step of forming a black matrix before forming the color filter layer.

Since the lower part of the auxiliary spacer is located in the installation hole, the top end of the auxiliary spacer is lower than the top end of the main spacer.

The step of forming the main spacer and the auxiliary spacer can be obtained by the same patterning process, and when forming the main spacer and the auxiliary spacer, there is no need to use a half-tone mask, so , the cost of manufacturing the color filter substrate by using the manufacturing method provided in the present invention is relatively low.

In the present invention, there is no particular limitation on the specific patterning process for forming the plurality of main spacers and the plurality of auxiliary spacers. Usually, the material for forming the main spacers and auxiliary spacers is photosensitive resin, therefore, forming a plurality of main spacers and a plurality of auxiliary spacers includes:

Coating a material layer forming the main spacer and the auxiliary spacer on the color filter layer;

exposing the material layer by using a mask;

The exposed material layer is developed to form the main spacers and the auxiliary spacers.

In the present invention, there is no special regulation on how to specifically implement the steps of forming the color filter layer and arranging holes. For example, when forming the color filter substrate shown in Figure 1, the steps of forming the color filter layer and a plurality of placement holes include:

Form a color resist layer;

forming a transparent planarization layer;

The placement holes are formed on the transparent planarization layer.

In the present invention, the planarization layer may be made of a photosensitive thermosetting resin. Therefore, the placement holes can be obtained by exposing and developing the transparent planarization layer.

When forming the color filter substrate shown in FIG. 2, the steps of forming the color filter layer and a plurality of placement holes include:

Form a color resist layer;

forming grooves on the color resist layer at positions corresponding to the auxiliary spacers;

A transparent material layer is formed, and the material of the transparent material layer falls into the groove to form the placement hole.

In this embodiment, the material forming the color-resist layer may also be a photosensitive material, therefore, the grooves can be obtained by exposing and developing the color-resist layer by using a mask.

When forming the color filter substrate described in Figure 3, the steps of forming the color filter layer and a plurality of placement holes include:

Form a color resist layer;

forming a transparent planarization layer;

A placement hole is formed through the transparent planarization layer and through at least a portion of the color resist layer.

Likewise, in this embodiment, the material forming the planarization layer may be a photosensitive thermosetting resin, the material forming the color resist layer may be a photosensitive material, and the placement holes are formed by exposure and development.

It can be understood that, the above embodiments are only exemplary embodiments adopted for illustrating the principle of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims (10)

1. a color membrane substrates, described color membrane substrates includes color rete, multiple main chock insulator matter and multiple auxiliary chock insulator matter, it is characterized in that, described main chock insulator matter is positioned on described color rete, on described color rete, the position corresponding to described auxiliary chock insulator matter is formed with placement hole, the bottom of described auxiliary chock insulator matter is arranged in the placement hole on described color rete, so that the distance between the surface of the top of described main chock insulator matter and described color rete is more than the distance between the surface of the top of described auxiliary chock insulator matter and described color rete.

2. color membrane substrates according to claim 1, it is characterised in that described color rete includes color blocking layer and forms the transparent planar layer on described color blocking layer, and described main chock insulator matter is formed on described transparent planar layer.

3. according to the color membrane substrates required in right described in 2, it is characterised in that described placement hole is formed on described transparent planar layer.

4. color membrane substrates according to claim 2, it is characterised in that being formed with groove corresponding to the position of described auxiliary chock insulator matter on described color blocking layer, the material of described transparent planar layer falls in described groove, to form described placement hole.

5. color membrane substrates according to claim 2, it is characterised in that described placement hole includes the first placement hole portion running through described transparent planar layer and forms the second placement hole portion being directed in described color blocking layer and with described first placement hole portion.

6. a display device, it is characterised in that include the color membrane substrates as described in any one in claim 1 to 5.

7. the manufacture method of a color membrane substrates, it is characterised in that described manufacture method includes:

Forming color rete and multiple placement hole, the position of multiple described placement holes is corresponding to the position of multiple auxiliary chock insulator matters;

Forming multiple main chock insulator matter and multiple auxiliary chock insulator matter, the bottom of described auxiliary chock insulator matter is arranged in described placement hole.

8. manufacture method according to claim 7, it is characterised in that the step forming color rete and multiple placement hole includes:

Form color blocking layer;

On color blocking layer, the position of corresponding described auxiliary chock insulator matter forms groove;

Forming transparent material layer, the material of described transparent material layer falls into and forms described placement hole in described groove.

9. manufacture method according to claim 7, it is characterised in that the step forming color rete and multiple placement hole includes:

Form color blocking layer;

Form transparent planar layer;

Transparent planar layer is formed described placement hole.

10. manufacture method according to claim 7, it is characterised in that the step forming color rete and multiple placement hole includes:

Form color blocking layer;

Form transparent planar layer;

Formed and run through described transparent planar layer and at least one of placement hole through described color blocking layer.