CN111258105A - Color filter substrate and testing method - Google Patents

Abstract

A color filter substrate and a testing method thereof are provided, the color filter substrate includes: a scale structure on a non-display area of the light-transmissive substrate, the scale structure comprising: the second shading pattern layer is provided with a second opening; and the second filtering layer group comprises a first non-display filtering layer, the colors of the first non-display filtering layer and the first display filtering layer are the same, the first non-display filtering layer is positioned in the second opening, a first gap area is arranged between the edge of the first non-display filtering layer and the second shading pattern layer, and the first gap area surrounds the first non-display filtering layer. The performance of the color filter substrate is improved.

Description

Color filter substrate and testing method

Technical Field

The invention relates to the field of liquid crystal display, in particular to a color filter substrate and a test method.

Background

In recent years, with the development of the field of information communication, there has been an increasing demand for various types of display devices. Currently, a mainstream display device includes: liquid crystal displays, plasma displays, electroluminescent displays, vacuum fluorescent displays, and the like. Since the lcd has advantages of light weight, thinness, small volume, low power consumption, and low radiation, the lcd is widely used in various data processing devices, such as televisions, notebooks, mobile phones, and personal digital assistants.

The liquid crystal display mainly includes: the liquid crystal display panel comprises a TFT array substrate, a color filter substrate, and a liquid crystal layer between the TFT array substrate and the color filter substrate. The electrodes on the TFT array substrate and the color filter substrate control the deflection of liquid crystal molecules to adjust the passing rate of external light, so that the display purpose is achieved.

The color filter substrate comprises a transparent glass substrate, a shading pattern layer (BM) positioned on the transparent glass substrate, and a filter layer (RGB layer) positioned on the shading pattern layer and the transparent glass substrate, wherein the filter layer covers the opening area of the shading pattern layer, and the filter layer is overlapped with the shading pattern layer.

However, the performance of the existing color filter substrate is poor.

Disclosure of Invention

The invention provides a color filter substrate and a test method thereof, which are used for improving the performance of the color filter substrate.

To solve the above problems, the present invention provides a color filter substrate, including: a light-transmissive substrate including a display region and a non-display region surrounding the display region; the first shading pattern layer is positioned on the display area of the light-transmitting substrate, and a first opening group is arranged in the first shading pattern layer and comprises a first display opening; the first light filtering layer group is positioned on the display area of the light-transmitting substrate and comprises a first display filter layer, the first display filter layer covers the first display opening, and the first display filter layer and the first shading pattern layer are provided with a first overlapping area; a scale structure on a non-display area of the light-transmissive substrate, the scale structure comprising: the second shading pattern layer is provided with a second opening; and the second light filtering layer group comprises a first non-display light filtering layer, the colors of the first non-display light filtering layer and the first display light filtering layer are the same, the first non-display light filtering layer is positioned in the second opening, a first gap area is arranged between the edge of the first non-display light filtering layer and the second shading pattern layer, and the first gap area surrounds the first non-display light filtering layer.

Optionally, the first overlapping area has a first preset overlapping width; the distance between the edge of the first non-display filter layer and the side wall of the second opening is provided with a first preset non-display distance, and the first preset non-display distance is larger than a first preset overlapping width.

Optionally, the shape types of the first non-display filter layer and the first display filter layer are the same.

Optionally, the first display filter layer is rectangular, and the first non-display filter layer is rectangular.

Optionally, the first display filter layer is triangular, and the first non-display filter layer is triangular.

Optionally, the first opening group further includes a second display opening and a third display opening; the first filter layer group further includes: the colors of the second display filter layer, the third display filter layer and the first display filter layer are different; the second display filter layer covers the second display opening, and the second display filter layer and the first shading pattern layer are provided with a second overlapping area; the third display filter layer covers the third display opening, and the third display filter layer and the first shading pattern layer are provided with a third overlapping area; the second filter layer group further includes: the second non-display filter layer and the second display filter layer are the same in color, the second non-display filter layer is located in the second opening, a second gap area is arranged between the edge of the second non-display filter layer and the second shading pattern layer, and the second gap area surrounds the second non-display filter layer; and the third non-display filter layer is the same as the third display filter layer in color, the third non-display filter layer is positioned in the second opening, a third gap area is arranged between the edge of the third non-display filter layer and the second shading pattern layer, and the third gap area surrounds the third non-display filter layer.

Optionally, the first display filter layer, the second display filter layer, and the third display filter layer are any one of red, blue, and green, and the colors of the first display filter layer, the second display filter layer, and the third display filter layer are different from each other; the color of the first non-display filter layer, the color of the second non-display filter layer and the color of the third non-display filter layer are any one of red, blue and green, and the color of the first non-display filter layer, the color of the second non-display filter layer and the color of the third non-display filter layer are different from each other.

Optionally, the first display filter layer, the second display filter layer, and the third display filter layer have the same shape and the same size; the first non-display filter layer, the second non-display filter layer and the third non-display filter layer are the same in shape and size.

Optionally, the second non-display filter layer and the second display filter layer have the same shape type, and the third non-display filter layer and the third display filter layer have the same shape type.

Optionally, the position arrangement of the first display filter layer, the second display filter layer, and the third display filter layer in the first filter layer group is consistent with the position arrangement of the first non-display filter layer, the second non-display filter layer, and the third non-display filter layer in the second filter layer group.

Optionally, in the first filter layer group, the first display filter layer, the second display filter layer, and the third display filter layer are arranged along a straight line, and the second display filter layer is located between the first display filter layer and the third display filter layer; in the second filter layer group, the first non-display filter layer, the second non-display filter layer and the third non-display filter layer are arranged along a straight line, and the second non-display filter layer is located between the first non-display filter layer and the third non-display filter layer.

Optionally, the second overlapping area has a second preset overlapping width, and the third overlapping area has a third preset overlapping width; the distance between the edge of the second non-display filter layer and the side wall of the second opening is a second preset non-display distance, and the second preset non-display distance is larger than a second preset overlapping width; a distance between the edge of the third non-display filter layer and the side wall of the second opening is provided with a third preset non-display distance; the third predetermined non-display distance is greater than a third predetermined overlap width.

Optionally, the number of the second openings is multiple, and the multiple second openings are divided into a first non-display opening, a second non-display opening, and a third non-display opening; the first non-display filter layer is located in the first non-display opening, the second non-display filter layer is located in the second non-display opening, and the third non-display filter layer is located in the third non-display opening.

Optionally, a distance between an edge of the first non-display filter layer and a sidewall of the first non-display opening has a first preset non-display distance, and the first preset non-display distance is greater than or equal to 5 micrometers and less than 50 micrometers; a distance between the edge of the second non-display filter layer and the side wall of the second non-display opening is a second preset non-display distance, and the second preset non-display distance is greater than or equal to 5 micrometers and smaller than 50 micrometers; a distance between an edge of the third non-display filter layer and a sidewall of the third non-display opening has a third preset non-display distance, and the third preset non-display distance is greater than or equal to 5 micrometers and less than 50 micrometers.

Optionally, the second light shielding pattern layers between the first non-display opening, the second non-display opening and the third non-display opening are connected together.

Optionally, the second light-shielding pattern layer between the first non-display opening and the second non-display opening, the second light-shielding pattern layer between the first non-display opening and the third non-display opening, and the second light-shielding pattern layer between the second non-display opening and the third non-display opening each have a separation groove; the second shading pattern layer surrounding the first non-display filter layer, the second shading pattern layer surrounding the second non-display filter layer and the second shading pattern layer surrounding the third non-display filter layer are mutually separated.

Optionally, different second filter layer groups are located in different second openings; the first non-display filter layer, the second non-display filter layer and the third non-display filter layer in the same second filter layer group are located in the same second opening.

The invention also provides a test method, which comprises the following steps: providing the color filter substrate of any one of the above items; providing a first preset non-display distance; measuring the distance between the edge of the first non-display filter layer and the second shading pattern layer by adopting an optical reflection measuring method or an optical transmission measuring method to obtain a first measured distance; judging the position offset condition of the first non-display filter layer according to the difference value between the first measured distance and the first preset non-display distance; and acquiring the position deviation condition of the first display filter layer according to the position deviation condition of the first non-display filter layer.

Optionally, an optical transmission measurement method is used to measure a distance between an edge of the first non-display filter layer and the second light-shielding pattern layer, so as to obtain a first measured distance; the optical transmission measurement method includes: providing a light source generator and a light source receiver; placing the color filter substrate between a light source generator and a light source receiver; after the color filter substrate is arranged between the light source generator and the light source receiver, the light source generator emits monitoring light and passes through the color filter substrate, and the light source receiver receives the monitoring light emitted from the color filter substrate; and acquiring the distance between the edge of the first non-display filter layer and the second shading pattern layer according to the condition of the monitoring light received by the light source receiver.

Optionally, an optical reflectometry method is used to measure a distance between an edge of the first non-display filter layer and the second light-shielding pattern layer, so as to obtain a first measured distance; the optical reflectometry method includes: providing a light source generator and a light source receiver; the light source generator and the light source receiver are arranged on the same side of the color filter substrate; after the light source generator and the light source receiver are arranged on the same side of the color filter substrate, the light source generator emits monitoring light to the color filter substrate, and the light source receiver receives the monitoring light reflected from the color filter substrate; and acquiring the distance between the edge of the first non-display filter layer and the second shading pattern layer according to the condition of the monitoring light received by the light source receiver.

Compared with the prior art, the technical scheme of the invention has the following advantages:

in the color filter substrate provided by the technical scheme of the invention, the scale structure is formed in the non-display area. The scale structure includes a first non-display filter layer, and the first non-display filter layer and the first display filter layer are the same in color. The first non-display filter layer and the first display filter layer are formed by using the same mask. The position deviation condition of the first non-display filter layer relative to the second shading pattern layer is consistent with the position deviation condition of the first display filter layer relative to the first shading pattern layer. Because in the scale structure, a first gap area is arranged between the edge of the first non-display filter layer and the second shading pattern layer, and the first gap area surrounds the first non-display filter layer, so that the light passing through the color filter substrate has obvious transmission difference or reflection difference at the boundary of the first gap area, and the size from the first non-display filter layer to the second shading pattern layer can be accurately tested. And obtaining the offset condition from the first non-display filter layer to the second shading pattern layer through dimension testing of the first non-display filter layer to the second shading pattern layer, and further indirectly obtaining the position offset condition of the first display filter layer relative to the first shading pattern layer. Therefore, the performance of the color filter substrate is improved.

Drawings

FIG. 1 is a schematic structural diagram of a color filter substrate;

fig. 2 to 8 are schematic structural diagrams of a color filter substrate according to an embodiment of the invention;

fig. 9 and 10 are schematic structural views of a color filter substrate according to another embodiment of the present invention;

fig. 11 and 12 are schematic structural views of a color filter substrate according to still another embodiment of the present invention.

Detailed Description

As described in the background, the color filter substrate formed by the prior art has poor performance.

A color filter substrate, referring to fig. 1 and fig. 2 in combination, wherein fig. 2 is a top view of fig. 1, comprising: the transparent glass substrate 100, the light-shielding pattern layer (BM)110 on the transparent glass substrate 100, and the filter layer (RGB layer) 120 on the light-shielding pattern layer 110 and the transparent glass substrate 100, wherein the filter layer 120 covers an opening region of the light-shielding pattern layer 110, and the filter layer 120 and the light-shielding pattern layer 110 have an overlapping region 130. The overlapping region 130 is a ring structure, and the overlapping region 130 has a first ring region and a second ring region opposite to each other, and a third ring region and a fourth ring region opposite to each other, the first ring region is connected to the third ring region and the fourth ring region, respectively, and the second ring region is connected to the third ring region and the fourth ring region, respectively.

With the decreasing feature size of the color filter substrate, the design sizes of the widths of the first ring area, the second ring area, the third ring area, and the fourth ring area are decreasing, and when the position of the filter layer 120 is slightly shifted, light leakage may occur. Monitoring the position of the filter layer 120 is an extremely important process.

At present, the position deviation of the filter layer 120 is monitored by measuring the size of the overlapping area of the filter layer 120 and the light-shielding pattern layer 110, specifically, an image acquisition device (AOI) acquires a picture of the color filter substrate, for the picture of the color filter substrate acquired by the image acquisition device (AOI), a line is pulled out in the picture corresponding to the position of the overlapping area, then the length of the line is tested, and the width size of the overlapping area is calculated and converted according to the length of the line.

However, the boundary of the overlapping region is not a straight line, and the boundary of the overlapping region is not easy to distinguish, and the lengths of lines drawn by different people in testing have large difference; secondly, as the characteristic size of the color filter substrate is continuously reduced, the width of the overlapping area is several micrometers, while the minimum precision of the currently used image acquisition equipment (AOI) is 0.7 micrometers, and the precision of the pictures of the overlapping area acquired by the image acquisition equipment (AOI) is poor. Therefore, for the color filter substrate with smaller feature size, the above method has difficulty in testing the width size of the overlapping region. Accordingly, the position deviation of the filter layer 120 cannot be monitored.

On this basis, the present invention provides a color filter substrate, comprising: a scale structure on a non-display area of the light-transmissive substrate, the scale structure comprising: the second shading pattern layer is provided with a second opening; and the second light filtering layer group comprises a first non-display light filtering layer, the colors of the first non-display light filtering layer and the first display light filtering layer are the same, the first non-display light filtering layer is positioned in the second opening, a first gap area is arranged between the edge of the first non-display light filtering layer and the second shading pattern layer, and the first gap area surrounds the first non-display light filtering layer. The sizes of the first non-display filter layer and the second shading pattern layer can be accurately tested. And obtaining the offset condition from the first non-display filter layer to the second shading pattern layer through dimension testing of the first non-display filter layer to the second shading pattern layer, and further indirectly obtaining the position offset condition of the first display filter layer relative to the first shading pattern layer. Therefore, the performance of the color filter substrate is improved.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Referring to fig. 3, fig. 3 shows a color filter substrate as a whole. The whole color filter substrate includes a plurality of display regions a and a non-display region B surrounding each display region a according to the size of the finally cut display panel.

In the present invention, the structure of forming the filter layer and the light shielding pattern layer in the display area a is the same as the conventional structure, and in the non-display area B, the present invention is improved in that the scale structure TEG is formed in the non-display area B.

An embodiment of the present invention provides a color filter substrate, and referring to fig. 4, fig. 5, fig. 6 and fig. 7 in combination, where fig. 4 is a schematic cross-sectional view taken along a cutting line a-a1 in fig. 3, fig. 5 is a schematic cross-sectional view taken along a cutting line b-b1 in fig. 3, referring to fig. 6 and fig. 7, fig. 6 is a top view of fig. 4, and fig. 7 is a top view of fig. 5, including:

a light-transmitting substrate 200, the light-transmitting substrate 200 including a display area a (refer to fig. 3 and 4 in combination) and a non-display area B (refer to fig. 3 and 5 in combination) surrounding the display area a;

a first light-shielding pattern layer 210 located on the display region a of the light-transmitting substrate 200, wherein the first light-shielding pattern layer 210 has a first opening group therein, and the first opening group includes a first display opening;

a first filter layer group located on the display area a of the transparent substrate 200, the first filter layer group including a first display filter layer 220a, the first display filter layer 220a covering the first display opening, and the first display filter layer 220a and the first light-shielding pattern layer 210 having a first overlapping area;

a scale structure on the non-display region B of the light-transmissive substrate 200, the scale structure comprising: a second light-shielding pattern layer 230, the second light-shielding pattern layer 230 having a second opening therein; and a second filter layer group including a first non-display filter layer 240a, wherein the first non-display filter layer 240a and the first display filter layer 220a have the same color, the first non-display filter layer 240a is located in the second opening, a first gap area 250a is formed between an edge of the first non-display filter layer 240a and the second light-shielding pattern layer 230, and the first gap area 250a surrounds the first non-display filter layer 240 a.

The first aperture group further includes a second display aperture and a third display aperture. The first display opening, the second display opening and the third display opening are separated from each other.

The first filter layer group further includes: a second display filter layer 220b (refer to fig. 6) and a third display filter layer 220c (refer to fig. 6), the colors of the second display filter layer 220b, the third display filter layer 220c, and the first display filter layer 220a being different from each other; the second display filter layer 220b covers the second display opening, and the second display filter layer 220b and the first light-shielding pattern layer 210 have a second overlapping area; the third display filter layer 220c covers the third display opening, and the third display filter layer 220c and the first light shielding pattern layer 210 have a third overlapping area.

The second filter layer group further includes: a second non-display filter layer 240b (refer to fig. 7), the second non-display filter layer 240b and the second display filter layer 220b having the same color, the second non-display filter layer 240b being located in the second opening, a second gap area 250b being provided between an edge of the second non-display filter layer 240b and the second light shielding pattern layer 230, and the second gap area 250b surrounding the second non-display filter layer 240 b; a third non-display filter layer 240c (refer to fig. 7), the third non-display filter layer 240c and the third display filter layer 220c have the same color, the third non-display filter layer 240c is located in the second opening, a third gap area 250c is formed between an edge of the third non-display filter layer 240c and the second light-shielding pattern layer 230, and the third gap area 250c surrounds the third non-display filter layer 240 c.

The first non-display filter layer 240a and the first display filter layer 220a are formed using the same mask, and the first non-display filter layer 240a and the first display filter layer 220a are formed in the same photolithography process. The second non-display filter layer 240b and the second display filter layer 220b are formed using the same mask, and the second non-display filter layer 240b and the second display filter layer 220b are formed in the same photolithography process. The third non-display filter layer 240c and the third display filter layer 220c are formed using the same mask, and the third non-display filter layer 240c and the third display filter layer 220c are formed in the same photolithography process.

In this embodiment, the number of the second openings is multiple, and the multiple second openings are divided into a first non-display opening, a second non-display opening, and a third non-display opening; the first non-display filter layer 240a is located in the first non-display opening, the second non-display filter layer 240b is located in the second non-display opening, and the third non-display filter layer 240c is located in the third non-display opening.

The colors of the first, second, and third display filter layers 220a, 220b, and 220c are any one of red, blue, and green, and the colors of the first, second, and third display filter layers 220a, 220b, and 220c are different from each other.

The first, second, and third non-display filter layers 240a, 240b, and 240c have any one of red, blue, and green colors, and the first, second, and third non-display filter layers 240a, 240b, and 240c have different colors.

The first, second, and third display filter layers 220a, 220b, and 220c have the same shape and the same size. The first, second, and third non-display filter layers 240a, 240b, and 240c have the same shape and the same size.

The first non-display filter layer 240a and the first display filter layer 220a have the same shape type. The second non-display filter layer 240b and the second display filter layer 220b have the same shape type, and the third non-display filter layer 240c and the third display filter layer 220c have the same shape type.

In this embodiment, a description is given taking as an example that the shapes of the first display filter layer 220a, the second display filter layer 220b, and the third display filter layer 220c are rectangular, and accordingly, the shapes of the first non-display filter layer 240a, the second non-display filter layer 240b, and the third non-display filter layer 240c are rectangular.

In other embodiments, the first display filter layer, the second display filter layer, and the third display filter layer have a triangular shape, and the first non-display filter layer, the second non-display filter layer, and the third non-display filter layer have a triangular shape.

In this embodiment, the description about the shapes of the first display filter layer 220a, the second display filter layer 220b, and the third display filter layer 220c all means: the first display filter layer 220a, the second display filter layer 220b, and the third display filter layer 220c have shapes of projected patterns on the surface of the light-transmitting substrate 200, respectively.

In this embodiment, the description about the shapes of the first, second, and third non-display filter layers 240a, 240b, and 240c all means: the first non-display filter layer 240a, the second non-display filter layer 240b, and the third non-display filter layer 240c have shapes of projected patterns on the surface of the light-transmitting substrate 200, respectively.

Note that the first non-display filter layer 240a and the first display filter layer 220a have the same or different sizes, the second non-display filter layer 240b and the second display filter layer 220b have the same or different sizes, and the third non-display filter layer 240c and the third display filter layer 220c have the same or different sizes.

The position arrangement of the first, second, and third display filter layers 220a, 220b, and 220c in the first filter layer group is consistent with the position arrangement of the first, second, and third non-display filter layers 240a, 240b, and 240c in the second filter layer group.

In this embodiment, taking as an example that the first display filter layer 220a, the second display filter layer 220b, and the third display filter layer 220c are arranged along a straight line in the first filter layer group, and the second display filter layer 220b is located between the first display filter layer 220a and the third display filter layer 220c, correspondingly, in the second filter layer group, the first non-display filter layer 240a, the second non-display filter layer 240b, and the third non-display filter layer 240c are arranged along a straight line, and the second non-display filter layer 240b is located between the first non-display filter layer 240a and the third non-display filter layer 240 c.

In other embodiments, in the first filter layer group, the position arrangement of the first display filter layer, the second display filter layer, and the third display filter layer may also be in other forms, and in the second filter layer group, the position arrangement of the first non-display filter layer, the second non-display filter layer, and the third non-display filter layer may also be in other forms.

The first overlapping area has a first preset overlapping width, the second overlapping area has a second preset overlapping width, and the third overlapping area has a third preset overlapping width.

The first preset overlap width refers to: a width of the first overlap area when the position of the first display filter layer 220a in the first display opening is not deviated; the second preset overlap width refers to: a width of the second overlap area when the position of the second display filter layer 220b in the second display opening is not deviated; the preset width of the third preset overlap width means: when the position of the third display filter layer 220c in the third display opening is not deviated, the width of the third overlapping area.

Specifically, in this embodiment, the distance between the edge of the first non-display filter layer 240a and the sidewall of the first non-display opening has a first preset non-display distance, and the first preset non-display distance is greater than a first preset overlap width. Specifically, in this embodiment, the distance between the edge of the second non-display filter layer 240b and the sidewall of the second non-display opening has a second predetermined non-display distance, and the second predetermined non-display distance is greater than the second predetermined overlap width. Specifically, in this embodiment, the distance between the edge of the third non-display filter layer 240c and the sidewall of the third non-display opening has a third preset non-display distance, and the third preset non-display distance is greater than a third preset overlapping width.

It should be noted that, the first preset non-display distance refers to: a distance between an edge of the first non-display filter layer 240a to a sidewall of the second opening when the first non-display filter layer 240a is not positionally deviated in the second opening; the second preset non-display distance means: a distance between an edge of the second non-display filter layer 240b to a sidewall of the second opening when the second non-display filter layer 240b is not positionally deviated in the second opening; the third preset non-display distance means: when the third non-display filter layer 240c is not deviated in position in the second opening, a distance between an edge of the third non-display filter layer 240c and a sidewall of the second opening.

In this embodiment, the first predetermined non-display distance is greater than or equal to 5 micrometers and less than 50 micrometers, the second predetermined non-display distance is greater than or equal to 5 micrometers and less than 50 micrometers, and the third predetermined non-display distance is greater than or equal to 5 micrometers and less than 50 micrometers.

The edge of the first display filter layer is provided with a first display edge to an Nth display edge, and the first display edge to the second display N edge are sequentially connected end to end.

In this embodiment, the first display filter layer 220a is rectangular, the edge of the first display filter layer 220a has a first display edge, a second display edge, a third display edge and a fourth display edge, the first display edge is connected to the second display edge, the second display edge is connected to the third display edge, the third display edge is connected to the fourth display edge, and the fourth display edge is connected to the first display edge.

In this embodiment, the first display filter layer 220a has a rectangular shape, and the first display opening has a rectangular shape.

In this embodiment, the first display filter layer 220a has a rectangular shape, and the first overlapping area has a rectangular ring-shaped structure.

The first overlap region includes a first sub-overlap region C1, a second sub-overlap region C2, a third sub-overlap region C3, and a fourth sub-overlap region C4. The first sub-overlap region C1 faces the first display edge, the second sub-overlap region C2 faces the second display edge, the third sub-overlap region C3 faces the third display edge, and the fourth sub-overlap region C4 faces the fourth display edge. The extending direction of the first sub-overlap region C1 is parallel to the first display edge, the extending direction of the second sub-overlap region C2 is parallel to the second display edge, the extending direction of the third sub-overlap region C3 is parallel to the third display edge, and the extending direction of the fourth sub-overlap region C4 is parallel to the fourth display edge.

In this embodiment, only the content of the first preset overlap width is described in detail, and the second preset overlap width and the third preset overlap width refer to the first preset overlap width and are not described in detail.

In this embodiment, the first overlapping area has a rectangular ring-shaped structure, and accordingly, the first preset overlapping width includes a first sub-preset overlapping width d1, a second sub-preset overlapping width d2, a third sub-preset overlapping width d3 and a fourth sub-preset overlapping width d 4. The first sub-preset overlap width d1 is a size of the first sub-overlap region C1, the second sub-preset overlap width d2 is a size of the second sub-overlap region C2, the third sub-preset overlap width d3 is a size of the third sub-overlap region C3, and the fourth sub-preset overlap width d4 is a size of the fourth sub-overlap region C4.

The edge of the first non-display filter layer is provided with a first non-display edge to an Nth non-display edge, N is an integer larger than or equal to 3, and the first non-display edge to the Nth non-display edge are connected end to end. The ith non-display side is parallel to the ith display side, and i is an integer which is greater than 1 and less than or equal to N.

The position arrangement from the first non-display edge to the Nth non-display edge is consistent with the position arrangement from the first display edge to the Nth display edge.

In this embodiment, the first non-display filter layer 240a is rectangular, the edge of the first non-display filter layer 240a has a first non-display edge, a second non-display edge, a third non-display edge and a fourth non-display edge, the first non-display edge is connected to the second non-display edge, the second non-display edge is connected to the third non-display edge, the third non-display edge is connected to the fourth non-display edge, and the fourth non-display edge is connected to the first non-display edge.

In this embodiment, the first non-display filter layer 240a has a rectangular shape, and the first non-display opening has a rectangular shape.

In this embodiment, the first non-display filter layer 240a has a rectangular shape, the edge of the second opening has a rectangular shape, and the first void region has a rectangular ring structure, and the first void region has a first sub-void region, a second sub-void region, a third sub-void region, and a fourth sub-void region, where the first sub-void region faces the first non-display edge, the second sub-void region faces the second non-display edge, the third sub-void region faces the third non-display edge, and the fourth sub-void region faces the fourth non-display edge. The extending direction of the first sub-gap area is parallel to the first non-display edge, the extending direction of the second sub-gap area is parallel to the second non-display edge, the extending direction of the third sub-gap area is parallel to the third non-display edge, and the extending direction of the fourth sub-gap area is parallel to the fourth non-display edge.

In this embodiment, the first gap region has a rectangular ring structure, and the first preset non-display distance includes a first sub-preset non-display distance d11, a second sub-preset non-display distance d12, a third sub-preset non-display distance d13, and a fourth sub-preset non-display distance d 14. The first sub-predetermined non-display distance d11 is a distance between the first non-display edge and a sidewall of the first non-display opening, and is also a width dimension of the first sub-gap region; the second sub-predetermined non-display distance d12 is a distance between the second non-display edge and the sidewall of the first non-display opening, and is also a width dimension of the second sub-gap region; the third sub-predetermined non-display distance d13 is a distance between the third non-display edge and the sidewall of the first non-display opening, and is also a size of the third sub-gap region; the fourth sub-predetermined non-display distance d14 is a distance between the fourth non-display edge and the sidewall of the first non-display opening, and is also a size of the fourth sub-gap region.

In this embodiment, the first sub-preset non-display distance d11 is greater than or equal to the first sub-preset overlap width d1, the second sub-preset non-display distance d12 is greater than or equal to the second sub-preset overlap width d2, the third sub-preset non-display distance d13 is greater than or equal to the third sub-preset overlap width d3, and the fourth sub-preset non-display distance d14 is greater than or equal to the fourth sub-preset overlap width d 4.

In this embodiment, the first preset non-display distance is greater than or equal to 5 micrometers and less than 50 micrometers, and correspondingly, the first sub-preset non-display distance d11, the second sub-preset non-display distance d12, the third sub-preset non-display distance d13, and the fourth sub-preset non-display distance d14 are greater than or equal to 5 micrometers and less than 50 micrometers, respectively.

In this embodiment, the second light shielding pattern layers between the first non-display opening, the second non-display opening, and the third non-display opening are connected together.

In this embodiment, the frame width of the second light-shielding pattern layer 230 is greater than or equal to 10 micrometers and less than or equal to 30 micrometers.

In another embodiment, referring to fig. 8, fig. 8 shows another structural state of the scale structure TEG, in fig. 8, the second light-shielding pattern layer 330 between the first non-display opening and the second non-display opening, the second light-shielding pattern layer 330 between the first non-display opening and the third non-display opening, and the second light-shielding pattern layer 330 between the second non-display opening and the third non-display opening each have a separate groove, respectively; the second light-shielding pattern layer 330 surrounding the first non-display filter layer 340a, the second light-shielding pattern layer 330 surrounding the second non-display filter layer 340b, and the second light-shielding pattern layer 330 surrounding the third non-display filter layer 340c are separated from each other.

Another embodiment of the invention further provides a color filter substrate, please refer to fig. 9 and 10, in which fig. 9 is a schematic diagram corresponding to fig. 6, fig. 9 shows a first light-shielding pattern layer 510, a first display filter layer 520a, a second display filter layer 520b, and a third display filter layer 520c, fig. 10 is a schematic diagram corresponding to fig. 7, and fig. 10 shows a first non-display filter layer 540a, a second non-display filter layer 540b, a third non-display filter layer 540c, and a second light-shielding pattern layer 530.

The present embodiment differs from the previous embodiment in that: the shapes of the first, second, and third display filter layers 520a, 520b, and 520c are different from those of the previous embodiment, and the shapes of the first, second, and third non-display filter layers 540a, 540b, and 540c are different from those of the previous embodiment. In this embodiment, the shapes of the first display filter layer 520a, the second display filter layer 520b, and the third display filter layer 520c are triangular, and the shapes of the first non-display filter layer 540a, the second non-display filter layer 540b, and the third non-display filter layer 540c are triangular. The same contents of this embodiment as those of the previous embodiment will not be described in detail.

In this embodiment, the first display filter layer 520a is triangular, and the edge of the first display filter layer 520 has a first display edge, a second display edge, and a third display edge. The first display filter layer 520a and the first light blocking pattern layer 510 have a first overlapping area, which includes a first sub-overlapping area, a second sub-overlapping area, and a third sub-overlapping area. The first sub-overlap region faces the first display edge, the second sub-overlap region faces the second display edge, and the third sub-overlap region faces the third display edge. The extending direction of the first sub-overlapping area is parallel to the first display edge, the extending direction of the second sub-overlapping area is parallel to the second display edge, and the extending direction of the third sub-overlapping area is parallel to the third display edge.

The second display filter layer 520b and the first light blocking pattern layer 510 have a second overlapping area, and the third display filter layer 520c and the first light blocking pattern layer 510 have a third overlapping area.

The first overlapping area has a first preset overlapping width, the second overlapping area has a second preset overlapping width, and the third overlapping area has a third preset overlapping width.

The first overlap region has a first preset overlap width, which in this embodiment includes a first sub-preset overlap width d5, a second sub-preset overlap width d6, and a third sub-preset overlap width d 7. The first sub-overlap width d5 is the size of the first sub-overlap region, the second sub-overlap width d6 is the size of the second sub-overlap region, and the third sub-overlap width d7 is the size of the third sub-overlap region.

In this embodiment, the shape of the first non-display filter layer 540a is a triangle, and the edge of the first non-display filter layer 540a has a first non-display side, a second non-display side, and a third non-display side. The first non-display edge is connected with the second non-display edge, the second non-display edge is connected with the third non-display edge, and the third non-display edge is connected with the first non-display edge.

In this embodiment, a first void region 550a is formed between the edge of the first non-display filter layer 540a and the second light-shielding pattern layer 530, and the first void region 550a surrounds the first non-display filter layer 540 a. A second gap area 550b is formed between the edge of the second non-display filter layer 540b and the second light blocking pattern layer 530, and the second gap area 550b surrounds the second non-display filter layer 540 b. A third void region 550c is formed between the edge of the third non-display filter layer 540c and the second light-shielding pattern layer 530, and the third void region 550c surrounds the third non-display filter layer 540 c.

In this embodiment, the first gap region is a three-sided ring structure, the first gap region has a first sub-gap region, a second sub-gap region and a third sub-gap region, the first sub-gap region faces the first non-display edge, the second sub-gap region faces the second non-display edge, the third sub-gap region faces the third non-display edge, an extending direction of the first sub-gap region is parallel to the first non-display edge, an extending direction of the second sub-gap region is parallel to the second non-display edge, and an extending direction of the third sub-gap region is parallel to the third non-display edge.

The distance between the edge of the first non-display filter layer 540a and the sidewall of the first non-display opening has a first predetermined non-display distance. The distance between the edge of the second non-display filter layer 540b and the sidewall of the second non-display opening has a second predetermined non-display distance. The distance between the edge of the third non-display filter layer 540c and the sidewall of the third non-display opening has a third predetermined non-display distance. The first preset non-display distance, the second preset non-display distance and the third preset non-display distance refer to the content of the embodiment.

In this embodiment, the first gap region has a three-sided ring structure, and the first predetermined non-display distance includes a first sub-predetermined non-display distance d51, a second sub-predetermined non-display distance d52, and a third sub-predetermined non-display distance d 53. The first sub-predetermined non-display distance d51 is a distance between the first non-display edge and a sidewall of the first non-display opening, and is also a width dimension of the first sub-gap region; the second sub-predetermined non-display distance d52 is a distance between the second non-display edge and the sidewall of the first non-display opening, and is also a width dimension of the second sub-gap region; the third sub-predetermined non-display distance d53 is a distance between the third non-display edge and the sidewall of the first non-display opening, and is also a size of the third sub-gap region.

The first sub-preset non-display distance d51 is greater than or equal to the first sub-preset overlap width d5, the second sub-preset non-display distance d52 is greater than or equal to the second sub-preset overlap width d6, and the third sub-preset non-display distance d53 is greater than or equal to the third sub-preset overlap width d 7.

In this embodiment, the first preset non-display distance is greater than or equal to 5 micrometers and less than 50 micrometers, and correspondingly, the first sub-preset non-display distance, the second sub-preset non-display distance, and the third sub-preset non-display distance are greater than or equal to 5 micrometers and less than 50 micrometers respectively.

Another embodiment of the present invention further provides a color filter substrate, wherein the color filter substrate in this embodiment is different from the color filter substrate in the previous embodiment in that: different second filtering layer groups are positioned in different second openings; the first non-display filter layer, the second non-display filter layer and the third non-display filter layer in the same second filter layer group are located in the same second opening. The color filter substrate in this embodiment and the color filter substrate in the previous embodiment have the same structure, and are not described in detail.

The color filter substrate provided in this embodiment, with reference to fig. 11, includes: a light-transmitting substrate 200, the light-transmitting substrate 200 including a display region and a non-display region B surrounding the display region; and a scale structure TEG on the non-display region B of the transparent substrate 200. The structure of the display region of the transparent substrate is the same as that of the previous embodiment, and is not described in detail. In this embodiment, the structure of the non-display region of the light-transmitting substrate is mainly described in detail.

Referring to fig. 11 and 12 in combination, the scale structure TEG includes: a second light-shielding pattern layer 430, the second light-shielding pattern layer 430 having a second opening therein; and a second filter layer group including a first non-display filter layer 440a, the first non-display filter layer 440a and the first display filter layer having the same color, the first non-display filter layer 440a being located in the second opening, a first void region being provided between an edge of the first non-display filter layer 440a and the second light-shielding pattern layer 430, and the first void region surrounding the first non-display filter layer 440 a.

In this embodiment, the second filter layer group further includes: a second non-display filter layer 440b, wherein the second non-display filter layer 440b and the second display filter layer have the same color, the second non-display filter layer 440b is located in the second opening, a second gap area is formed between the edge of the second non-display filter layer 440b and the second light-shielding pattern layer 430, and the second gap area surrounds the second non-display filter layer 440 b; the third non-display filter layer 440c, the third non-display filter layer 440c and the third display filter layer have the same color, the third non-display filter layer 440c is located in the second opening, a third gap area is formed between the edge of the third non-display filter layer 440c and the second light-shielding pattern layer 430, and the third gap area surrounds the third non-display filter layer 440 c.

Different second filtering layer groups are positioned in different second openings; the first, second, and third non-display filter layers 440a, 440b, and 440c in the same second filter layer group are located in the same second opening.

In this embodiment, the position arrangement of the first non-display filter layer 440a, the second non-display filter layer 440b, and the third non-display filter layer 440c in the second filter layer group is as described in the foregoing embodiments. In fig. 12, an example is illustrated in which, in the second filter layer group, the first non-display filter layer 440a, the second non-display filter layer 440b, and the third non-display filter layer 440c are arranged in a straight line, and the second non-display filter layer 440b is located between the first non-display filter layer 440a and the third non-display filter layer 440 c.

A distance between the edge of the first non-display filter layer 440a and the sidewall of the second opening has a first predetermined non-display distance, and the first predetermined non-display distance is greater than a first predetermined overlap width. A distance between the edge of the second non-display filter layer 440b and the sidewall of the second opening has a second predetermined non-display distance, and the second predetermined non-display distance is greater than the second predetermined overlap width. A distance between the edge of the third non-display filter layer 440c and the sidewall of the second opening has a third predetermined non-display distance, and the third predetermined non-display distance is greater than a third predetermined overlap width.

The colors of the first, second, and third non-display filter layers 440a, 440b, and 440c are described in reference to the foregoing embodiments, and will not be described in detail.

The shapes of the first, second, and third non-display filter layers 440a, 440b, and 440c refer to the contents of the foregoing embodiments. In this embodiment, a description is given taking as an example that the shapes of the first non-display filter layer 440a, the second non-display filter layer 440b, and the third non-display filter layer 440c are rectangles.

In this embodiment, the first non-display filter layer 440a has a rectangular shape, and the edge of the first non-display filter layer 440a has a first non-display side, a second non-display side, a third non-display side, and a fourth non-display side.

In this embodiment, the first non-display filter layer 440a has a rectangular shape, and the second opening has a rectangular shape.

In this embodiment, the first preset non-display distance includes a first sub-preset non-display distance d41, a second sub-preset non-display distance d42, a third sub-preset non-display distance d43, and a fourth sub-preset non-display distance d 44. The first sub-preset non-display distance d41 is the distance between the first non-display edge and the side wall of the second opening; the second sub-preset non-display distance d42 is the distance between the second non-display edge and the side wall of the second opening; the third sub-preset non-display distance d43 is the distance between the third non-display edge and the side wall of the second opening; the fourth sub-predetermined non-display distance d44 is a distance between the fourth non-display edge and the sidewall of the second opening.

In this embodiment, the fourth sidewall of the first non-display filter layer 440a faces the second non-display filter layer 440 b. Accordingly, the fourth sub preset non-display distance d44 is greater than the first sub preset non-display distance d41, the second sub preset non-display distance d42 and the third sub preset non-display distance d43, respectively.

In a specific embodiment, the first sub-preset non-display distance d41 is greater than or equal to 5 micrometers and less than 50 micrometers, the second sub-preset non-display distance d42 is greater than or equal to 5 micrometers and less than 50 micrometers, the third sub-preset non-display distance d43 is greater than or equal to 5 micrometers and less than 50 micrometers, and the fourth sub-preset non-display distance d44 is between 50 micrometers and 500 micrometers.

In this embodiment, the frame width of the second light-shielding pattern layer 430 refers to the data of the previous embodiments.

Another embodiment of the present invention further provides a testing method, including: providing the color filter substrate; providing a first preset non-display distance; measuring the distance between the edge of the first non-display filter layer and the second shading pattern layer by adopting an optical reflection measuring method or an optical transmission measuring method to obtain a first measured distance; judging the position offset condition of the first non-display filter layer according to the difference value between the first measured distance and the first preset non-display distance; and acquiring the position deviation condition of the first display filter layer according to the position deviation condition of the first non-display filter layer.

In one embodiment, the distance between the edge of the first non-display filter layer and the second light-shielding pattern layer is measured by an optical transmission measurement method to obtain a first measured distance; the optical transmission measurement method includes: providing a light source generator and a light source receiver; placing the color filter substrate between a light source generator and a light source receiver; after the color filter substrate is arranged between the light source generator and the light source receiver, the light source generator emits monitoring light and passes through the color filter substrate, and the light source receiver receives the monitoring light emitted from the color filter substrate; and acquiring the distance between the edge of the first non-display filter layer and the second shading pattern layer according to the condition of the monitoring light received by the light source receiver.

The test method further comprises the following steps: providing a second preset non-display distance; measuring the distance between the edge of the second non-display filter layer and the second shading pattern layer by adopting an optical transmission measurement method to obtain a second measured distance; the optical transmission measurement method includes: acquiring the distance between the edge of a second non-display filter layer and the second shading pattern layer according to the condition of monitoring light received by the light source receiver; judging the position offset condition of the second non-display filter layer according to the difference value between the second measured distance and the second preset non-display distance; and acquiring the position deviation condition of the second display filter layer according to the position deviation condition of the second non-display filter layer.

The test method further comprises the following steps: providing a third preset non-display distance; measuring the distance between the edge of a third non-display filter layer and the second shading pattern layer by adopting an optical transmission measurement method to obtain a third measured distance; the optical transmission measurement method includes: acquiring the distance between the edge of a third non-display filter layer and the second shading pattern layer according to the condition of monitoring light received by the light source receiver; judging the position offset condition of the third non-display filter layer according to the difference value between the third measured distance and the third preset non-display distance; and acquiring the position deviation condition of the third display filter layer according to the position deviation condition of the third non-display filter layer.

In another embodiment, the distance between the edge of the first non-display filter layer and the second light-shielding pattern layer is measured by an optical reflectometry method to obtain a first measured distance; the optical reflectometry method includes: providing a light source generator and a light source receiver; the light source generator and the light source receiver are arranged on the same side of the color filter substrate; after the light source generator and the light source receiver are arranged on the same side of the color filter substrate, the light source generator emits monitoring light to the color filter substrate, and the light source receiver receives the monitoring light reflected from the color filter substrate; and acquiring the distance between the edge of the first non-display filter layer and the second shading pattern layer according to the condition of the monitoring light received by the light source receiver.

The test method further comprises the following steps: providing a second preset non-display distance; measuring the distance between the edge of the second non-display filter layer and the second shading pattern layer by adopting an optical reflection measurement method to obtain a second measured distance; the optical reflectometry method includes: acquiring the distance between the edge of a second non-display filter layer and the second shading pattern layer according to the condition of monitoring light received by the light source receiver; judging the position offset condition of the second non-display filter layer according to the difference value between the second measured distance and the second preset non-display distance; and acquiring the position deviation condition of the second display filter layer according to the position deviation condition of the second non-display filter layer.

The test method further comprises the following steps: providing a third preset non-display distance; measuring the distance between the edge of a third non-display filter layer and the second shading pattern layer by adopting an optical reflection measurement method to obtain a third measured distance; the optical reflectometry method includes: acquiring the distance between the edge of a third non-display filter layer and the second shading pattern layer according to the condition of monitoring light received by the light source receiver; judging the position offset condition of the third non-display filter layer according to the difference value between the third measured distance and the third preset non-display distance; and acquiring the position deviation condition of the third display filter layer according to the position deviation condition of the third non-display filter layer.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (20)

1. A color filter substrate, comprising:

a light-transmissive substrate including a display region and a non-display region surrounding the display region;

the first shading pattern layer is positioned on the display area of the light-transmitting substrate, and a first opening group is arranged in the first shading pattern layer and comprises a first display opening;

the first light filtering layer group is positioned on the display area of the light-transmitting substrate and comprises a first display filter layer, the first display filter layer covers the first display opening, and the first display filter layer and the first shading pattern layer are provided with a first overlapping area;

a scale structure on a non-display area of the light-transmissive substrate, the scale structure comprising: the second shading pattern layer is provided with a second opening; and the second light filtering layer group comprises a first non-display light filtering layer, the colors of the first non-display light filtering layer and the first display light filtering layer are the same, the first non-display light filtering layer is positioned in the second opening, a first gap area is arranged between the edge of the first non-display light filtering layer and the second shading pattern layer, and the first gap area surrounds the first non-display light filtering layer.

2. The color filter substrate of claim 1, wherein the first overlapping area has a first predetermined overlapping width; the distance between the edge of the first non-display filter layer and the side wall of the second opening is provided with a first preset non-display distance, and the first preset non-display distance is larger than a first preset overlapping width.

3. The color filter substrate according to claim 1, wherein the first non-display filter layer and the first display filter layer have the same type of shape.

4. The color filter substrate according to claim 3, wherein the first display filter layer has a rectangular shape, and the first non-display filter layer has a rectangular shape.

5. The color filter substrate according to claim 3, wherein the first display filter layer has a triangular shape, and the first non-display filter layer has a triangular shape.

6. The color filter substrate of claim 1, wherein the first set of openings further comprises a second display opening and a third display opening; the first filter layer group further includes: the colors of the second display filter layer, the third display filter layer and the first display filter layer are different; the second display filter layer covers the second display opening, and the second display filter layer and the first shading pattern layer are provided with a second overlapping area; the third display filter layer covers the third display opening, and the third display filter layer and the first shading pattern layer are provided with a third overlapping area;

the second filter layer group further includes: the second non-display filter layer and the second display filter layer are the same in color, the second non-display filter layer is located in the second opening, a second gap area is arranged between the edge of the second non-display filter layer and the second shading pattern layer, and the second gap area surrounds the second non-display filter layer; and the third non-display filter layer is the same as the third display filter layer in color, the third non-display filter layer is positioned in the second opening, a third gap area is arranged between the edge of the third non-display filter layer and the second shading pattern layer, and the third gap area surrounds the third non-display filter layer.

7. The color filter substrate according to claim 6, wherein the first display filter layer, the second display filter layer, and the third display filter layer have any one of red, blue, and green colors, and the colors of the first display filter layer, the second display filter layer, and the third display filter layer are different from each other;

the color of the first non-display filter layer, the color of the second non-display filter layer and the color of the third non-display filter layer are any one of red, blue and green, and the color of the first non-display filter layer, the color of the second non-display filter layer and the color of the third non-display filter layer are different from each other.

8. The color filter substrate according to claim 6, wherein the first display filter layer, the second display filter layer, and the third display filter layer have the same shape and the same size; the first non-display filter layer, the second non-display filter layer and the third non-display filter layer are the same in shape and size.

9. The color filter substrate according to claim 6, wherein the second non-display filter layer and the second display filter layer have the same shape type, and the third non-display filter layer and the third display filter layer have the same shape type.

10. The color filter substrate as claimed in claim 6, wherein the first display filter layer, the second display filter layer and the third display filter layer in the first filter layer group are arranged at the same positions as the first non-display filter layer, the second non-display filter layer and the third non-display filter layer in the second filter layer group.

11. The color filter substrate as claimed in claim 10, wherein in the first filter layer group, the first display filter layer, the second display filter layer and the third display filter layer are arranged along a straight line, and the second display filter layer is located between the first display filter layer and the third display filter layer; in the second filter layer group, the first non-display filter layer, the second non-display filter layer and the third non-display filter layer are arranged along a straight line, and the second non-display filter layer is located between the first non-display filter layer and the third non-display filter layer.

12. The color filter substrate according to claim 6, wherein the second overlapping area has a second predetermined overlapping width, and the third overlapping area has a third predetermined overlapping width; the distance between the edge of the second non-display filter layer and the side wall of the second opening is a second preset non-display distance, and the second preset non-display distance is larger than a second preset overlapping width; the distance between the edge of the third non-display filter layer and the side wall of the second opening is provided with a third preset non-display distance, and the third preset non-display distance is larger than a third preset overlapping width.

13. The color filter substrate according to claim 6, wherein the number of the second openings is plural, and the plural second openings are divided into a first non-display opening, a second non-display opening, and a third non-display opening; the first non-display filter layer is located in the first non-display opening, the second non-display filter layer is located in the second non-display opening, and the third non-display filter layer is located in the third non-display opening.

14. The color filter substrate of claim 13, wherein a distance between an edge of the first non-display filter layer and a sidewall of the first non-display opening has a first predetermined non-display distance, and the first predetermined non-display distance is greater than or equal to 5 micrometers and less than 50 micrometers; a distance between the edge of the second non-display filter layer and the side wall of the second non-display opening is a second preset non-display distance, and the second preset non-display distance is greater than or equal to 5 micrometers and smaller than 50 micrometers; a distance between an edge of the third non-display filter layer and a sidewall of the third non-display opening has a third preset non-display distance, and the third preset non-display distance is greater than or equal to 5 micrometers and less than 50 micrometers.

15. The color filter substrate of claim 13, wherein the second light blocking pattern layer between the first non-display opening, the second non-display opening, and the third non-display opening is connected together.

16. The color filter substrate according to claim 13, wherein the second light-shielding pattern layer between the first non-display opening and the second non-display opening, the second light-shielding pattern layer between the first non-display opening and the third non-display opening, and the second light-shielding pattern layer between the second non-display opening and the third non-display opening each have a separation groove therein; the second shading pattern layer surrounding the first non-display filter layer, the second shading pattern layer surrounding the second non-display filter layer and the second shading pattern layer surrounding the third non-display filter layer are mutually separated.

17. The color filter substrate according to claim 6, wherein different second filter layer groups are located in different second openings; the first non-display filter layer, the second non-display filter layer and the third non-display filter layer in the same second filter layer group are located in the same second opening.

18. A method of testing, characterized by: the method comprises the following steps:

providing a color filter substrate according to any one of claims 1 to 17;

providing a first preset non-display distance;

measuring the distance between the edge of the first non-display filter layer and the second shading pattern layer by adopting an optical reflection measuring method or an optical transmission measuring method to obtain a first measured distance;

judging the position offset condition of the first non-display filter layer according to the difference value between the first measured distance and the first preset non-display distance;

and acquiring the position deviation condition of the first display filter layer according to the position deviation condition of the first non-display filter layer.

19. The test method according to claim 18, wherein a distance between an edge of the first non-display filter layer and the second light shielding pattern layer is measured by an optical transmittance measurement method to obtain a first measured distance;

the optical transmission measurement method includes: providing a light source generator and a light source receiver; placing the color filter substrate between a light source generator and a light source receiver; after the color filter substrate is arranged between the light source generator and the light source receiver, the light source generator emits monitoring light and passes through the color filter substrate, and the light source receiver receives the monitoring light emitted from the color filter substrate; and acquiring the distance between the edge of the first non-display filter layer and the second shading pattern layer according to the condition of the monitoring light received by the light source receiver.

20. The test method according to claim 18, wherein a distance between an edge of the first non-display filter layer and the second light shielding pattern layer is measured by an optical reflectometry method to obtain a first measured distance;

the optical reflectometry method includes: providing a light source generator and a light source receiver; the light source generator and the light source receiver are arranged on the same side of the color filter substrate; after the light source generator and the light source receiver are arranged on the same side of the color filter substrate, the light source generator emits monitoring light to the color filter substrate, and the light source receiver receives the monitoring light reflected from the color filter substrate; and acquiring the distance between the edge of the first non-display filter layer and the second shading pattern layer according to the condition of the monitoring light received by the light source receiver.

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