1. A color filter substrate, comprising: the color filter comprises a first substrate and a plurality of pixels, wherein the pixels are arranged on one side of the first substrate facing the array substrate, and each pixel comprises a plurality of color resistance blocks with different colors.

2. The color filter substrate of claim 1, wherein a value of d of each color block is obtained according to a formula Δ nd ═ λ/2, and Δ n is a liquid crystal refractive index parameter.

3. The color filter substrate of claim 2, wherein the color filter blocks have a thickness h1, and h1+ d ═ L is satisfied, and L values of the color filter blocks of different colors are equal.

4. The color filter substrate of claim 2, wherein a first transparent filling structure is disposed between the color resist block of at least one color and the first substrate, the thickness of the color resist block is h1, the thickness of the first transparent filling structure is h2, h1+ h2+ d ═ L is satisfied, and L values of the color resist blocks of different colors are equal.

5. The color filter substrate according to claim 4, wherein, in the color resist blocks of a plurality of different colors, thicknesses of the color resist blocks are equal, and the first transparent filling structures are disposed between the color resist blocks of other colors and the first substrate except for the color resist block of the color with the largest numerical value of λ.

6. A display panel, comprising an array substrate and the color filter substrate according to any one of claims 1 to 5, wherein the color filter substrate is disposed opposite to the array substrate.

7. The display panel according to claim 6, wherein the array substrate includes a second substrate and a second transparent filling structure, the second transparent filling structure is disposed on a side of the second substrate facing the color filter substrate, the second transparent filling structure is disposed opposite to the color block of at least one color, a first transparent filling structure is disposed between the color block of at least one color and the first substrate, the second transparent filling structure has a thickness h3, the color block has a thickness h1, the first transparent filling structure has a thickness h2, and h1+ h2+ h3+ d L is satisfied, and L values of the color blocks of different colors are equal.

8. The display panel according to claim 7, wherein the color resist blocks of a plurality of different colors have equal thicknesses, and the first transparent filling structure and the second transparent filling structure are provided corresponding to regions opposite to the color resist blocks of the other colors except the color resist block of the color having the largest numerical value of λ.

9. A display device characterized by comprising the display panel according to any one of claims 6 to 8.

10. A method for manufacturing a display panel, which is applied to the display panel according to any one of claims 6 to 8, comprising: providing a color film substrate; an array substrate is arranged on one side of the color film substrate at intervals; a plurality of pixels are arranged on one side of the color film substrate facing the array substrate, and each pixel comprises a plurality of color resistance blocks with different colors; the wavelength of light with the same color as the color of the color blocking blocks is lambda, the distance between the color blocking blocks and the array substrate is d, and the d of each color blocking block in the plurality of color blocking blocks is increased along with the increase of the lambda corresponding to the color blocking blocks.

Background

Currently, In a display device, a Thin film transistor liquid crystal display (TFT-LCD) is a common display type, and an In-Plane Switching mode liquid crystal display (IPS-LCD) is one of the TFT-LCDs. The IPS-LCD uses a horizontal switching technique, and a great advantage of the horizontal switching is to accelerate the deflection speed of liquid crystal molecules when processing continuous dynamic pictures. The advantage of fast response speed of the IPS hard screen is reflected, so that the motion trail of the image is finer and clearer.

Since IPS-LCDs have a problem of low transmittance, a high-brightness backlight is required to meet the specifications of customers, which increases power consumption. In order to solve the above problems, a method generally adopted in the prior art is to reduce the film thickness of the color resist block in the color film or increase the aperture ratio. However, the NTSC (National Television Standards Committee) color gamut is reduced by reducing the film thickness, and the line width of the Black Matrix is required to be reduced by increasing the aperture ratio, and if the line width of the Black Matrix (BM) is small, the manufacturing is difficult, so that the manufacturing level in the prior art is difficult to achieve.

In summary, IPS-LCD still has the problem of low transmittance.

Disclosure of Invention

An object of the embodiments of the present application is to provide a color film substrate, a display panel, a display device, and a method for manufacturing a display panel, which aim to solve the technical problem of low transmittance of a TFT-LCD in the prior art.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: providing a color film substrate, comprising: the pixel array comprises a first substrate and a plurality of pixels, wherein the pixels are arranged on one side, facing the array substrate, of the first substrate, each pixel comprises a plurality of color resistance blocks with different colors, the wavelength of light with the same color as the color of the color resistance blocks in the color resistance blocks is lambda, the distance between the color resistance blocks and the array substrate is d, and the value of d of each color resistance block is increased along with the increase of the lambda value corresponding to the color resistance blocks.

Further, the value of d of each color block is obtained according to the formula Δ nd ═ λ/2, and Δ n is a liquid crystal refractive index parameter.

Further, the thickness of the color block is h1, h1+ d is equal to L, and the L values of the color blocks of different colors are equal.

Further, a first transparent filling structure is arranged between the color block of at least one color and the first substrate, the thickness of the color block is h1, the thickness of the first transparent filling structure is h2, and h1+ h2+ d is L, and the L values of the color blocks of different colors are equal.

Further, in the color resist blocks of different colors, the thicknesses of the color resist blocks are equal, and the first transparent filling structures are arranged between the color resist blocks of other colors and the first substrate except the color resist block of the color with the maximum value of the lambda.

A display panel comprises an array substrate and the color film substrate in any technical scheme, wherein the color film substrate is arranged opposite to the array substrate.

Further, the array substrate includes a second substrate and a second transparent filling structure, the second transparent filling structure is disposed on a side of the second substrate facing the color filter substrate, the second transparent filling structure is disposed opposite to the color block of at least one color, a first transparent filling structure is disposed between the color block of at least one color and the first substrate, the second transparent filling structure has a thickness h3, the color block has a thickness h1, the first transparent filling structure has a thickness h2, and h1+ h2+ h3+ d ═ L is satisfied, and L values of the color blocks of different colors are equal.

Furthermore, in the color block blocks with different colors, the thicknesses of the color block blocks are equal, and except for the color block with the color with the maximum value of the lambda value, the first transparent filling structure and the second transparent filling structure are correspondingly arranged in the area opposite to the color block blocks with other colors.

A display device comprising the display panel of any one of the above claims.

A method for manufacturing a display panel, which is suitable for the display panel according to any one of the above technical solutions, the method comprising: providing a color film substrate; an array substrate is arranged on one side of the color film substrate at intervals; a plurality of pixels are arranged on one side of the color film substrate facing the array substrate, and each pixel comprises a plurality of color resistance blocks with different colors; the wavelength of light with the same color as the color of the color blocking blocks is lambda, the distance between the color blocking blocks and the array substrate is d, and the d of each color blocking block in the plurality of color blocking blocks is increased along with the increase of the lambda corresponding to the color blocking blocks.

The application provides a display panel's beneficial effect lies in: compared with the prior art, the display panel changes the penetration rate of different color blocks by changing the distance between the color blocks and the second substrate, thereby changing the total penetration rate of the display panel. The transmittance formula of the IPS-LCD is as follows:

where T is the transmittance, Ψ is the liquid crystal material angle, Δ n is the liquid crystal refractive index parameter, λ is the wavelength of light of the same color as the color of the color block, and d is the distance between the color block and the array substrate. According to the formula, in order to obtain higher total transmittance of the color film substrate, that is, the d of each color block is increased along with the increase of the lambda corresponding to the color block, the color blocks are enabled to achieve relatively higher transmittance, and thus the total transmittance of the display panel with the color film substrate is increased. The mode of increasing the penetration rate is only to change the distance between the color block and the array substrate, and the influence on the NTSC color gamut and the line width of the black matrix is small.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic partial structural view of a display panel to which a color filter substrate according to a first embodiment of the present disclosure is applied;

fig. 2 is a schematic partial structural view of a display panel to which a color filter substrate according to a second embodiment of the present disclosure is applied;

fig. 3 is a schematic partial structural view of a display panel to which a color filter substrate according to a third embodiment of the present disclosure is applied;

fig. 4 is a schematic partial structure diagram of a display panel to which a color filter substrate according to a fourth embodiment of the present disclosure is applied;

fig. 5 is a schematic partial structure diagram of a display panel to which a color filter substrate according to a fifth embodiment of the present disclosure is applied;

fig. 6 is a schematic partial structure diagram of a display panel according to a sixth embodiment of the present application;

fig. 7 is a schematic view of a partial structure of a display panel according to a seventh embodiment of the present application.

Reference numerals referred to in the above figures are detailed below:

11-a first substrate; 12-red color block; 13-green color block; 14-blue color block; 15-black matrix; 16-a first transparent filling structure;

20-an array substrate; 21-a second substrate; 22-a second transparent filling structure; 221-a through hole; 222-groove.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "thickness," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship illustrated in the drawings that is referenced solely for the convenience of describing the application and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered limiting of the application.

In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In order to explain the technical solutions of the present application, the following detailed descriptions are made with reference to specific drawings and examples.

As shown in fig. 1, an embodiment of the present application provides a color filter substrate, where the color filter substrate includes a first substrate 11 and a plurality of pixels, the plurality of pixels are all disposed on a side of the first substrate 11 facing an array substrate 20, each pixel includes a plurality of color-resisting blocks of different colors, in the plurality of color-resisting blocks, a wavelength of light having a same color as that of the color-resisting block is λ, a distance between the color-resisting block and the array substrate 20 is d, and a value of d of each color-resisting block increases with an increase in a value of λ corresponding to the color-resisting block.

The transmittance formula of the IPS-LCD is as follows:

where T is the transmittance, Ψ is the liquid crystal material angle, Δ n is the liquid crystal refractive index parameter, λ is the wavelength of the light having the same color as the color block, and d is the distance between the color block and the array substrate 20. According to the formula, in order to obtain higher total transmittance of the color film substrate, namely, the d of each color block is increased along with the increase of the lambda corresponding to the color block, the color blocks all achieve relatively higher transmittance, and therefore the total transmittance of the color film substrate is increased. And the manner of increasing the transmittance is only to change the distance between the color block and the array substrate 20, and the effect on the NTSC color gamut and the line width of the black matrix 15 is small.

Preferably, the value of d is obtained according to the formula Δ nd ═ λ/2, and Δ n is a liquid crystal refractive index parameter. As can be seen from the above formula of transmittance, tmax is satisfied when Δ nd ═ λ/2 and 2 Ψ ═ π/2. In order to obtain the maximum transmittance, the distance d between each color block and the array substrate is enabled to satisfy that delta nd is lambda/2, namely, the maximum transmittance is realized by each color block, and the total transmittance of the display panel is increased.

As shown in fig. 1, in a color filter substrate, a pixel includes a red color resist block 12, a green color resist block 13, and a blue color resist block 14, and a black matrix 15 is provided between adjacent color resist blocks. Since the present embodiment changes only the distance between part or all of the color resist blocks and the array substrate, and does not change the gap between the color resist blocks or the cross-sectional area of the color resist blocks, there is no influence on the line width of the black matrix 15.

In order to verify that the transmittance of the display panel to which the color film substrate provided in this embodiment is applied is increased and the influence on the NTSC color gamut is small, the following comparative test is performed.

Taking the example that the pixel of the color film substrate in the display panel includes three color resist blocks, namely a red color resist block 12, a green color resist block 13 and a blue color resist block 14. The distance between the red color block 12 and the array substrate is dR, the distance between the green color block 13 and the array substrate is dG, and the distance between the blue color block 14 and the array substrate is dB.

The control group is a display panel of a common architecture in the prior art, and dR ═ dG ═ dB ═ 3.3 um.

The experimental group is a display panel of a new architecture using the color film substrate provided in this embodiment, dR is 4.2um, dG is 3.7um, and dB is 3.3 um.

The transmittance of the display panel in red emission (represented by R in the following table), the transmittance in green emission (represented by G in the following table), the transmittance in blue emission (represented by B in the following table) and the transmittance in white emission (represented by W in the following table) were measured, respectively, and the NTSC color gamut values thereof were obtained to obtain the following table 1.

	R	G	B	W	NTSC
						Control group	0.89％	2.78％	0.51％	4.18％	73.34％
Experimental group	1.00％	2.84％	0.51％	4.35％	73.28％
						Gain of	11.89％	2.21％	0.00％	4.01％	-0.08％

TABLE 1

As can be seen from table 1, the transmittance can be improved by more than 4% by using the new architecture provided by this embodiment, and the effect on NTSC is very small.

In summary, the color filter substrate provided in this embodiment can improve the transmittance of the display panel, and has little influence on the line width of the black matrix 15 and the NTSC color gamut.

First embodiment

In the present embodiment, the thickness of the color block is h1, and h1+ d is L, and the L values of the color blocks of different colors are equal. That is, the color resist blocks of different colors have different d values by setting the film thicknesses thereof to different thicknesses. This kind of setting mode need not to increase other structures, only change in original structure the color block the membrane thickness can, it is little to the production and manufacturing flow influence, be convenient for manufacturing.

As shown in fig. 1, for example, one pixel includes three color blocks, i.e., a red color block 12, a green color block 13, and a blue color block 14, since the wavelength of the red color block 12 is longest, the distance dR between the red color block and the array substrate 20 is the largest, and accordingly, the film thickness h1r is the smallest. The blue color block 14 has the shortest wavelength, so that the distance dB between the blue color block and the array substrate 20 is the smallest, and accordingly, the film thickness h1b is the largest. The wavelength of the green color block 13 is between the red color block 12 and the blue color block 14, so the distance dG between the green color block and the array substrate 20 is less than dR and greater than dB, and accordingly, the film thickness h1g is greater than h1r and less than h1 b.

Second embodiment

In this embodiment, the color filter substrate includes a first substrate 11, a first transparent filling structure 16 is disposed between a color block of at least one color and the first substrate 11, a thickness of the color block is h1, the thickness of the first transparent filling structure 16 is h2, and h1+ h2+ d is L, and L values of the color blocks of different colors are equal. Since the values of L are equal, in the present embodiment, the magnitude of the value of d is related to the thickness of the color block and the thickness of the first transparent filling structure 16. That is, in order to make the value of d satisfy Δ nd ═ λ/2, the thickness of the color resist block may be changed, the thickness of the first transparent filling structure 16 may be changed, or both the thickness of the color resist block and the thickness of the first transparent filling structure 16 may be changed.

That is, in the present embodiment, by adding the first transparent filling structure 16 between several color-resisting blocks and the first substrate 11, the distance between the corresponding color-resisting block and the first substrate 11 is increased, and the distance d between the corresponding color-resisting block and the array substrate 20 is decreased. By arranging the first transparent filling structures 16 with different thicknesses, the distance between the corresponding color resistance blocks and the array substrate 20 is changed. So that the value of d of each color block satisfies the condition that delta nd is lambda/2. It is worth integrating that several in this embodiment means not less than one.

In this arrangement, since the first transparent filling structure 16 is added, the distance between the corresponding color-resisting block and the array substrate 20 can be changed without changing the film thickness of the color-resisting block. Since the film thickness is not changed, the shift of the color coordinates can be prevented.

The first transparent filling structure 16 may be an Over Coat (OC) layer or a passivation layer (PV), which may be made of silicon nitride.

Preferably, the color resist blocks of different colors have the same thickness, and the first transparent filling structures 16 are disposed between the color resist blocks of other colors and the first substrate 11 except the color resist block of the color with the largest value of λ. In this arrangement, the thicknesses (i.e., film thicknesses) of all the color resist blocks are not changed, so that the color coordinates can be prevented from being shifted.

As shown in fig. 2, for example, one pixel includes three color blocks, a red color block 12, a green color block 13, and a blue color block 14. Since the three color-blocking blocks are equal in thickness, h1 r-h 1 b-h 1 g. Since the wavelength of the red color block 12 is longest, the distance dR between the red color block and the array substrate 20 is the largest, and accordingly, the film thickness is not changed and the first transparent filling structure 16 is not correspondingly added. First transparent filling structures 16 are arranged between the blue color block 14 and the first substrate 11 and between the green color block 13 and the first substrate 11. Since the wavelength of the blue color block 14 is shortest, its distance dB from the array substrate 20 is smallest, and accordingly, its thickness h2b of the first transparent filling structure 16 is largest. The wavelength of the green color block 13 is between the red color block 12 and the blue color block 14, so the distance dG between the green color block and the array substrate 20 is less than dR and greater than dB, and accordingly, the thickness h2g of the first transparent filling structure 16 is less than h2 b. In the above arrangement, the thicknesses of the three color-resisting blocks do not need to be changed, and only the first transparent filling structures 16 need to be arranged at the corresponding positions of two of the color-resisting blocks, so that the preparation process is simplified.

Third embodiment

In the color filter substrate provided in this embodiment, one pixel includes three color resist blocks, namely a red color resist block 12, a green color resist block 13, and a blue color resist block 14. First transparent filling structures are respectively arranged between the three color blocking blocks and the first substrate 11. Since the wavelength of the red color block 12 is longest, the distance dR between the red color block and the array substrate 20 is the largest, and accordingly, the thickness h2r of the first transparent filling structure 16 disposed between the red color block 12 and the first substrate 11 is the smallest. Since the wavelength of the blue color block 14 is shortest, its distance dB from the array substrate 20 is smallest, and accordingly, its thickness h2b of the first transparent filling structure 16 is largest. The wavelength of the green color block 13 is between the red color block 12 and the blue color block 14, so the distance dG between the green color block and the array substrate 20 is less than dR and greater than dB, and accordingly the thickness h2g of the first transparent filling structure 16 is less than h2b and greater than h2 r.

Fourth embodiment

In the color filter substrate provided in this embodiment, the thickness of the partial photoresist block is increased to change the value d thereof, and the value d of the partial photoresist block is changed by adding the first transparent filling structure 16. For example, as shown in fig. 3, one pixel includes three color blocks, a red color block 12, a green color block 13, and a blue color block 14. The thickness of the red color block 12 is equal to that of the blue color block 14, and the thickness of the green color block 13 is greater than that of the red color block 12. The first transparent filling structures 16 are not arranged between the red color block 12 and the first substrate 11, and between the green color block 13 and the first substrate 11, and the first transparent filling structures 16 are arranged between the blue color block 14 and the first substrate 11.

Fifth embodiment

In the color filter substrate provided in this embodiment, the thickness of the partial photoresist block is increased to change the value d thereof, and the value d of the partial photoresist block is changed by adding the first transparent filling structure 16. For example, as shown in fig. 3, one pixel includes three color blocks, a red color block 12, a green color block 13, and a blue color block 14. The thickness of the red color block 12 is equal to that of the green color block 13, and the thickness of the blue color block 14 is greater than that of the red color block 12. First transparent filling structures 16 are not arranged between the red color blocking block 12 and the first substrate 11 and between the blue color blocking block 14 and the first substrate 11, and first transparent filling structures 16 are arranged between the green color blocking block 13 and the first substrate 11.

Sixth embodiment

The present embodiment provides a display panel, which includes an array substrate and the color filter substrate provided in any one of the above embodiments, where the array substrate and the color filter substrate are disposed opposite to each other. Due to the adoption of the color film substrate provided by any one of the embodiments, the transmittance of the display panel can be improved.

Further, as shown in fig. 6, in the display panel provided in this embodiment, the array substrate includes a second substrate 21 and a second transparent filling structure 22, the second transparent filling structure 22 is disposed on a side of the second substrate 21 facing the color filter substrate, the second transparent filling structure 22 is opposite to the color block of at least one color, the first transparent filling structure 16 is disposed between the color block of at least one color and the first substrate 11, a thickness of the second transparent filling structure 22 is h3, a thickness of the first transparent filling structure 16 is h2, a thickness of the color block is h1, and h1+ h2+ 3+ d is L, and L values of the color blocks of different colors are equal. Wherein h1 is more than 0, h2 is more than or equal to 0, and h3 is more than or equal to 0.

Specifically, as shown in fig. 6, a black matrix 15 is further provided between adjacent color resist blocks. The second transparent filling structure 22 may be disposed on one side of the array substrate in the following manner: the second transparent filling structure 22 is disposed only in the region opposite to the corresponding color resist block (as shown in fig. 6), that is, the second transparent filling layer is not disposed in the region opposite to the color resist block without changing the d value, and in the region opposite to the black matrix 15.

In one embodiment, the color resist blocks of different colors have the same thickness, and the first transparent filling structure 16 or the second transparent filling structure 22 is disposed in the array substrate corresponding to the region opposite to the color resist block of the other color except the color resist block of the color with the largest value of λ.

For example, in fig. 6, one pixel includes three color resist blocks, a red color resist block 12, a green color resist block 13, and a blue color resist block 14. The three color resist blocks have the same thickness, the first transparent filling structures 16 are not arranged between the red color resist block 12 and the first substrate 11 and between the blue color resist block 14 and the first substrate 11, the first transparent filling structures 16 are arranged between the green color resist block 13 and the first substrate 11, and the second transparent filling structures 22 are arranged at the opposite positions of the array substrate side and the green color resist block 13.

In the present embodiment, the second transparent structure may be a passivation layer (PV), which may be made of silicon nitride.

Seventh embodiment

In the display panel provided in this embodiment, the array substrate includes a second substrate 21 and a second transparent filling structure 22, the second transparent filling structure 22 is disposed on a side of the second substrate 21 facing the color filter substrate, the second transparent filling structure 22 is opposite to the color block of at least one color, a first transparent filling structure 16 is disposed between the color block of at least one color and the first substrate 11, the thickness of the second transparent filling structure 22 is h3, the thickness of the first transparent filling structure 16 is h2, the thickness of the color block is h1, and h1+ h2+ h3+ d is L, and L values of the color blocks of different colors are equal. Wherein h1 is more than 0, h2 is more than or equal to 0, and h3 is more than or equal to 0. The color resist blocks of different colors have the same thickness, and except the color resist block of one color with the maximum lambda value in the array substrate, the first transparent filling structure 16 and the second transparent filling structure 22 are correspondingly arranged in the area opposite to the color resist blocks of other colors.

As shown in fig. 7, one pixel includes three color resist blocks, a red color resist block 12, a green color resist block 13, and a blue color resist block 14. The thicknesses of the three color blocking blocks are equal, a first transparent filling structure 16 is not arranged between the red color blocking block 12 and the first substrate 11, and first transparent filling structures 16 are arranged between the green color blocking block 13 and the first substrate 11 and between the blue color blocking block 14 and the first substrate 11. On the array substrate side, a second transparent filling structure 22 is provided at a position opposing the green color block 13 and at a position opposing the blue color block 14.

Eighth embodiment

The present embodiment provides a display device, including the display panel provided in the foregoing embodiments. Since the display panel provided in any of the above embodiments is disposed in the display device, the display device has all the advantages of the display panel provided in any of the above embodiments, and details are not repeated herein.

Ninth embodiment

The embodiment provides a preparation method of a display panel, which is suitable for the display panel provided in the above embodiments, and the preparation method includes: providing a color film substrate; an array substrate is arranged on one side of the color film substrate at intervals; a plurality of pixels are arranged on one side of the color film substrate facing the array substrate, and each pixel comprises a plurality of color resistance blocks with different colors; the wavelength of light with the same color as the color of the color stop blocks is lambda, the distance between the color stop blocks and the array substrate is d, and the d of each color stop block increases along with the increase of the corresponding lambda of each color stop block.

Further, the value of d is obtained according to the formula Δ nd ═ λ/2, and Δ n is a liquid crystal refractive index parameter.

Because each pixel comprises a plurality of color blocking blocks with different colors, and the wavelength of the color blocking blocks with different colors is different, the distances between the color blocking blocks with different colors and the array substrate are different.

The distance between the color block with different colors and the array substrate can be changed by the following modes:

1) the film thickness of the color change block was changed. Specifically, the film thickness of the color resist block having the longest wavelength is increased based on the film thickness of the color resist block having the longest wavelength.

2) A first transparent filling structure 16 is added between the color resist block and the first substrate 11 of the color film substrate. Specifically, the first transparent structures with different thicknesses are added between the color resist block with the longest wavelength and the first substrate 11, so that the distances between the color resist blocks with different wavelengths and the array substrate are different.

3) And adding a second transparent filling structure 22 on one side of the array substrate facing the color film substrate direction. Specifically, the second transparent filling structure 22 provided at the position corresponding to the color resist block having the longest wavelength is the thinnest or the second transparent filling structure 22 is not provided, based on the film thickness of the color resist block having the longest wavelength. And arranging second transparent filling structures 22 with different thicknesses at the positions opposite to the color resistance blocks with shorter wavelengths, so that the distances between the color resistance blocks with different wavelengths and the array substrate are different.

The three modes can be used independently or in combination.

For example, the first and second methods can be combined, and the first transparent filling structure 16 is added between part of the color resist block and the first substrate 11, so as to increase the thickness of part of the color resist block.

The first and third ways may be combined, and the second transparent filling structure 22 is disposed in the array substrate corresponding to part of the color block units, so as to increase the thickness of the color block.

The second and third ways may be combined, and a first transparent filling structure 16 is added between a part of the color-resisting blocks and the first substrate 11, and a second transparent filling structure 22 is disposed in the array substrate corresponding to a part of the color-resisting blocks.

The first, second and third ways may be combined, a first transparent filling structure 16 is added between a part of the color-resisting blocks and the first substrate 11, a second transparent filling structure 22 is arranged in the array substrate corresponding to the part of the color-resisting blocks, and the thickness of the part of the color-resisting blocks is increased.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.