WO2019000973A1

WO2019000973A1 - Colour film substrate and display apparatus

Info

Publication number: WO2019000973A1
Application number: PCT/CN2018/076443
Authority: WO
Inventors: 齐永莲; 董学; 曲连杰; 赵合彬; 贵炳强; 春晓改
Original assignee: 京东方科技集团股份有限公司; 北京京东方显示技术有限公司
Priority date: 2017-06-30
Filing date: 2018-02-12
Publication date: 2019-01-03
Also published as: CN109212813A; CN109212813B

Abstract

Provided are a colour film substrate and a display apparatus. A colour film substrate (10) comprises: a first base substrate (101); a colour film layer (103), arranged on the first base substrate (101) and comprising a first pattern (1031) and a second pattern (1032), wherein the first pattern (1031) is configured to make excitation light emit first-colour light (01) after passing through the first pattern (1031), and the second pattern (1032) is configured to make the excitation light emit second-colour light (02) after passing through the second pattern (1032); and a first filter film (104), arranged between the first base substrate (101) and the colour film layer (103), and configured to reflect some of the first-colour light (01) and transmit the second-colour light (02).

Description

Color film substrate, display device

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. 201710558593.7, filed on Jun. 30,,,,,,,,,,,,

Technical field

At least one embodiment of the present disclosure is directed to a color film substrate and a display device.

Background technique

As a means of improving the color gamut, quantum dots have gradually moved from theory to application. For example, the quantum dot film provided by FUJI film and the quantum rod provided by QD Vision are representative. And Quantum Dot Light Emitting Diodes (QLED).

Summary of the invention

At least one embodiment of the present disclosure is directed to a color filter substrate and a display device that can improve light efficiency.

At least one embodiment of the present disclosure provides a color filter substrate, including:

a first substrate;

a color film layer on the first substrate, including a first pattern and a second pattern, the first pattern being configured to emit excitation light through the first pattern to emit first color light, The second pattern is configured to emit the second color light after the excitation light passes through the second pattern,

A first filter film, located between the first substrate and the color film layer, is configured to reflect a portion of the first color light and pass the second color light.

A color filter substrate according to one or more embodiments of the present disclosure, the first filter film includes at least two optical film layers having different refractive indices.

According to one or more embodiments of the present disclosure, the material of each optical film layer includes SiO _x , Al ₂ O ₃ , MgF, SiNy, Ti ₃ O ₅ , ZrO ₂ , Nb ₂ O ₅ and Ta _{2 .} At least one of O ₅ .

According to one or more embodiments of the present disclosure, the color film substrate has a refractive index ranging from 1.3 to 2.6.

According to one or more embodiments of the present disclosure, the color film substrate has a thickness ranging from 10 to 65 nm.

A color filter substrate according to one or more embodiments of the present disclosure, the first filter film includes at least one optical film layer group including a first refractive index layer and a second refractive index layer, The refractive index of the first refractive index layer is greater than the refractive index of the second refractive index layer.

According to one or more embodiments of the present disclosure, the color filter substrate has a refractive index ranging from 2.1 to 2.6, and a refractive index ranging from 1.3 to 1.8.

According to one or more embodiments of the present disclosure, the first refractive index layer material includes at least one of SiNy, ZrO ₂ , Ti ₃ O ₅ , Nb ₂ O _{5 ,} and Ta ₂ O ₅ . The second refractive index layer material includes at least one of SiOx, Al ₂ O ₃ and MgF.

According to one or more embodiments of the present disclosure, the refractive index of the at least two optical film layers gradually increases from a direction in which the first substrate substrate is directed to the color film layer.

A color film substrate according to one or more embodiments of the present disclosure, the color film layer further includes a third pattern, the third pattern being configured to emit the excitation light through the third pattern and then emit a third Color light, the first filter film is also configured to pass the third color light.

According to one or more embodiments of the present disclosure, the color filter substrate is characterized in that the first color light is blue light, the second color light is green light, and the third color light is red light.

According to one or more embodiments of the present disclosure, a color film substrate, the material of the third pattern includes quantum dots, and the material of the second pattern includes quantum dots.

According to one or more embodiments of the present disclosure, the color filter substrate has a wavelength of the first color light that is smaller than a wavelength of the second color light, and a wavelength of the second color light that is smaller than the third color light. a wavelength, the wavelength of the excitation light being less than or equal to a wavelength of the first color light.

A color filter substrate according to one or more embodiments of the present disclosure, further comprising a blue-violet light absorbing layer, wherein the blue-violet light absorbing layer is located on a side of the first filter film away from the color film layer, The blue-violet light absorbing layer is configured to absorb blue light and ultraviolet light in external light.

A color filter substrate according to one or more embodiments of the present disclosure, further comprising a second filter film, wherein the second filter film is located on a side of the color film layer away from the first substrate And configured to reflect the second color light by the first color light.

A color filter substrate according to one or more embodiments of the present disclosure, the second filter film is further configured to reflect a third color light.

At least one embodiment of the present disclosure provides a display device including a color filter substrate provided by at least one embodiment of the present disclosure.

At least one embodiment of the present disclosure provides a display device, including:

a display substrate comprising a color film layer and a first filter film, the color film layer comprising a first pattern and a second pattern;

a light source, located on one side of the display substrate, configured to emit excitation light;

Wherein the first pattern is configured to emit the first color light after the excitation light passes through the first pattern, and the second pattern is configured to pass the excitation light through the second pattern Two color light,

The first filter film is located on a side of the color film layer away from the light source, and is configured to reflect a portion of the first color light and pass the second color light.

A display device according to one or more embodiments of the present disclosure, further comprising a second filter film, the second filter film being located on a side of the color film layer adjacent to the light source, and configured to pass through The first color light reflects the second color light.

A display device according to one or more embodiments of the present disclosure, further comprising a blue-violet light absorbing layer, wherein the blue-violet light absorbing layer is located on a side of the first filter film away from the color film layer, The blue-violet light absorbing layer is configured to absorb blue light and ultraviolet light in external light.

According to one or more embodiments of the present disclosure, the color filter layer further includes a third pattern, the third pattern being configured to emit the third color after the excitation light passes through the third pattern Light, the first filter film is also configured to pass light of a third color.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly described below. It is obvious that the drawings in the following description relate only to some embodiments of the present disclosure, and are not to limit the disclosure. .

1 is a schematic structural view of a TFT-LCD;

2 is a schematic structural view of another TFT-LCD;

3 is a schematic structural view of a color filter substrate and a TFT-LCD including the color film substrate according to an embodiment of the present disclosure;

4 is a schematic structural diagram of a color filter substrate and a TFT-LCD including the color film substrate according to another embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a color filter substrate and a TFT-LCD including the color film substrate according to another embodiment of the present disclosure;

6 is a schematic diagram of reflectance at different wavelengths of a TFT-LCD including a color filter substrate provided by an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a color filter substrate and a TFT-LCD including the color film substrate according to another embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of a color filter substrate and a TFT-LCD including the color film substrate according to another embodiment of the present disclosure.

Detailed ways

The technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. It is apparent that the described embodiments are part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the described embodiments of the present disclosure without departing from the scope of the invention are within the scope of the disclosure.

Unless otherwise defined, technical terms or scientific terms used in the present disclosure are intended to be understood in the ordinary meaning of the ordinary skill of the art. The words "first," "second," and similar terms used in the present disclosure do not denote any order, quantity, or importance, but are used to distinguish different components. Similarly, the words "comprising" or "comprising" or "comprising" or "an" or "an" The words "connected" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to indicate the relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may also change accordingly.

FIG. 1 is a schematic view showing the structure of a Thin Film Transistor Liquid Crystal Display (TFT-LCD). As shown in FIG. 1, the TFT-LCD includes a color filter substrate 10, an array substrate 30, and a liquid crystal layer LC interposed between the color filter substrate 10 and the array substrate 30. The color filter substrate 10 includes a black matrix 102 and a color filter (CF) layer 103, and the color film layer 103 may include a first pattern 1031, a second pattern 1032, and a third pattern 1033. The material of at least one of the first pattern 1031, the second pattern 1032, and the third pattern 1033 includes a quantum dot (QD). The backlight 401 provides a light source for the TFT-LCD. After the excitation light passes through the first pattern 1031, the first color light can be emitted. After the excitation light passes through the second pattern 1032, the second color light can be emitted. After the excitation light passes through the third pattern 1033, the light can be emitted. Three color light. The array substrate 30 includes a third substrate 301. The side of the array substrate 30 (the third substrate 301) away from the liquid crystal layer LC may be provided with a lower polarizing plate 302. The side of the color filter substrate 10 away from the liquid crystal layer LC may be An upper polarizing plate 122 is provided.

As can be seen from FIG. 1, the polarized light is deflected from the array substrate side through the lower polarizing plate 302, and after being rotated by the liquid crystal, it becomes polarized light of the other direction, and then is emitted from the upper polarizing plate 122. However, after the quantum dot color film (QD CF) is used, the QD absorbs the incident light and re-emits it, and the emitted light belongs to circularly polarized light. Therefore, no matter how the liquid crystal is deflected, a part of the light will be emitted from the CF side, which is the so-called "depolarization" phenomenon.

Fig. 2 shows a schematic structural view of another TFT-LCD. As shown in FIG. 2, in order to improve the depolarization phenomenon, the upper polarizing plate may be integrated inside the display device. For example, a quantum dot color film layer (QD CF) can be formed on the side of the upper polarizer away from the lower polarizer (ie, the light passes through the upper polarizer and then through the color filter layer). For example, the display device may include an intermediate substrate 20, and the intermediate substrate 20 may include a second substrate substrate 201 and an upper polarizing plate 202. For example, a Wire Grid Polarizer (WGP) can be used, and the WGP can be made very thin to realize integration of the upper polarizing plate inside the display device. However, because QD illumination is emitted in all directions (for example, both upwards and downwards), the efficiency of QD CF is low.

The QD CF LCD shown in FIG. 2 carries the polarizing plate 202 on the intermediate substrate 20, which can solve the problem of depolarization of the QD, but the blue light that is not absorbed by the QD will continue to be emitted, resulting in waste and reducing the luminous efficacy of the QD. And the light emitted by the QD is not used.

As shown in FIG. 3, at least one embodiment of the present disclosure provides a color filter substrate, including:

a first substrate 101;

The color film layer 103 is disposed on the first base substrate 101 and includes a first pattern 1031 and a second pattern 1032. The material of the second pattern 1032 includes quantum dots, and the first pattern 1031 is configured to pass the excitation light through the first pattern. After 1031, the first color light 01 is emitted, and the second pattern 1032 is configured to emit the second color light 02 after the excitation light passes through the second pattern 1032.

The first filter film 104 is located on a side of the color film layer 103 close to the first base substrate 101 (for example, disposed between the first base substrate 101 and the color film layer 103, but is not limited thereto), and is configured to be configured as A portion of the first color light 01 is reflected and passes through the second color light 02.

For example, the first color light is blue light and the second color light is green light.

In the color film substrate provided by at least one embodiment of the present disclosure, a portion of the first color light that is directed upward through the color film layer 103 may be reflected by the first color filter film 104, and the reflected first color light may be further reflected by the second pattern 1032. Use, thereby, to improve light efficiency. A portion of the first color light that is not reflected by the first filter film 104 can pass through the first filter film 104 to facilitate display. The color filter substrate provided by at least one embodiment of the present disclosure may be a high-efficiency quantum dot color film structure. The arrangement of the first filter film 104 can also serve to encapsulate and protect the QD while achieving an improvement in optical efficiency. For example, after the first filter film 104 is disposed on the color filter substrate, the brightness of the display device including the color filter substrate is uniform, and the color gamut is not greatly affected.

For example, a QD CF layer may be formed by doping quantum dots in a resin such as a photoresist. The color film substrate provided by the embodiment of the present disclosure can further improve the application of the process-compatible quantum dots in the color gamut lifting of the panel factory.

As shown in FIG. 3, according to an embodiment of the present disclosure, a color film layer 103 further includes a third pattern 1033. The material of the third pattern 1033 includes quantum dots, and the third pattern 1033 is configured to pass the excitation light. The third pattern 1033 is followed by a third color light 03, and the first filter film 104 is further configured to pass the third color light. For example, the third color light is red light. The first filter film 104 is disposed to reflect a portion of the first color light, and the reflected first color light can be utilized by the third pattern, thereby improving the light efficiency.

For example, the excitation light can be provided by the backlight 401. The excitation light can have a higher energy to excite quantum dot illumination in the second pattern and/or the third pattern. For example, the excitation light may have a shorter wavelength, for example, the wavelength of the excitation light may be less than the wavelength of the second color light and the third color light. For example, the wavelength of the excitation light may be less than or equal to the wavelength of the first color light. When the wavelength of the excitation light is less than the wavelength of the first color light, the first pattern may include a quantum dot, and the excitation light may excite the quantum dot illumination in the first pattern (a first color light is emitted). For example, the backlight can be made of blue light, so that the first pattern 1031 can be formed by using a transparent resin layer without adding quantum dots, so that the quantum dot material can be saved, but is not limited thereto. For example, it is also possible to adjust the backlight wavelength to add a quantum dot in the first pattern 1031.

For example, the wavelength of the first color light is less than the wavelength of the second color light, and the wavelength of the second color light is less than the wavelength of the third color light. For example, the wavelength of the excitation light is less than or equal to the wavelength of the first color light.

In the embodiment of the present disclosure, the excitation light is taken as the first color light as an example. When the backlight 401 adopts blue light, the first filter film 104 is disposed to solve the residual problem that the first color light (for example, blue light) is incompletely absorbed in the second pattern and/or the third pattern and passes through the QD to improve Light effect.

The first filter film 104 functions to achieve partial reflection of the first color light (eg, blue light), and the second color (eg, green light) and/or the third color light (eg, red light) are all passed, aiming to increase the first color light. The second pattern and/or the third pattern are excited a plurality of times (for example, blue light); the light extraction efficiency is improved. Because the blue light is too strong, partial emission can be achieved, combined with red and green, it is easy to match the white point.

As shown in FIG. 4, according to a color filter substrate provided by an embodiment of the present disclosure, the first filter film 104 may include at least two optical film layers having different refractive indices. For example, the material of each optical film layer may include at least one of SiO _x , Al ₂ O ₃ , MgF, SiNy, Ti ₃ O ₅ , ZrO ₂ , Nb ₂ O _{5 ,} and Ta ₂ O ₅ , wherein x and y are preferable Any number greater than zero. For example, the thickness of each optical film layer may range from 10 to 65 nm. For example, each optical film layer has a refractive index ranging from 1.3 to 2.6.

As shown in FIG. 4, according to a color filter substrate provided by an embodiment of the present disclosure, the first filter film 104 may include at least one optical film layer set 1040. For example, each optical film layer set 1040 can include a first refractive index layer 10402 and a second refractive index layer 10401 having a refractive index greater than that of the second refractive index layer 10401. The optical film layer group 1040 may be provided in one or more, for example, may be provided in the form of hundreds or thousands. This embodiment of the present disclosure does not limit this. The first filter film 104 may be formed on the first base substrate 101. For example, in each optical film layer group 1040, the first refractive index layer 10402 may be closer to the backlight than the second refractive index layer 10401. For example, in each optical film layer, optical cancellation or anti-reflection may occur at the interface of the refractive index change interface. The interface of the first refractive index layer 10402 and the second refractive index layer 10401 can serve as a reflective interface.

For example, in a case where the first filter film 104 includes a plurality of optical film layer groups 1040, the plurality of optical film layer groups 1040 may be sequentially laminated in a direction perpendicular to the first base substrate 101.

Since the optical path is proportional to the refractive index of the optical film layer and proportional to the thickness of the optical film layer, the required optical path can be obtained by adjusting the refractive index and thickness of the optical film layer.

As shown in FIG. 4, according to an embodiment of the present disclosure, the refractive index of the first refractive index layer 10402 ranges from 2.1 to 2.6, and the refractive index of the second refractive index layer 10401 ranges from 1.3 to 1.8. For example, the second refractive index layer material includes at least one of SiOx, Al ₂ O _{3 ,} and MgF, and the first refractive index layer material includes at least SiNy, ZrO ₂ , Ti ₃ O ₅ , Nb ₂ O _{5 ,} and Ta ₂ O ₅ . one.

As shown in FIG. 4, according to an embodiment of the present disclosure, the refractive index of the first refractive index layer 10402 can be about 2.3, and a silicon nitride film can be used. The refractive index of the second refractive index layer 10401 can be A silicon nitride film may be employed around 2.0, that is, a double-layer silicon nitride film may be employed as the first filter film 104.

As shown in FIG. 5, a color filter substrate according to an embodiment of the present disclosure includes three optical film layers 1041, 1042, and 1043. For example, from a direction close to the first base substrate 101 to away from the first base substrate 101, the optical film layer includes a first optical film 1041, a second optical film 1042, and a third optical film 1043, the first optical film 1041 The refractive index may be less than 2.0, the refractive index of the second optical film 1042 may be 1.45-1.5, and the refractive index of the third optical film 1043 may be greater than 2.35. For example, the first optical film 1041 and the third optical film 1043 may employ a SiNy film, and the second optical film 1042 may employ a SiOx film. The first optical film 1041 and the second optical film 1042 may form one optical film layer group 1040, or the second optical film 1042 and the third optical film 1043 may form one optical film layer group 1040. For example, from a direction close to the first base substrate 101 to a distance from the first base substrate 101 (in the direction from the first filter film 104 to the first base substrate 101), the refractive index of each optical film layer may also be Gradually increase.

As shown in FIG. 6, the reflectance curve of the color filter substrate of the first filter film including the double-layer silicon nitride film and the three-layer film structure (SiNy/SiOx/SiNy) provided by the above embodiment at different wavelengths, As can be seen from FIG. 6, in the blue light wavelength band (455 nm - 492 nm), the reflectance of the display device including the double-layer silicon nitride film as the first filter film 104 is about 8% to 14%, and in the green light. The reflectance of the band (492 nm - 577 nm) and the red band (622 nm - 770 nm) is less than 5%. The color film substrate provided in this embodiment can achieve the effects of reflecting blue light and transmitting green light and red light.

As shown in FIG. 5, according to a color filter substrate provided by an embodiment of the present disclosure, the first filter film may adopt other forms of a three-layer film structure (SiNy/SiOx/SiNy), for example, the film thickness of each layer may be adjusted. It also produces the effect of reflecting blue light, passing through green and red light. The examples are shown in the table below.

The thickness of the first filter film of the first and third film structures and its effect

In the above table, TR@450 indicates the transmittance of light at a wavelength of 450 nm (blue light), and TR@550 indicates the transmittance of light at a wavelength of 550 nm (green light), as can be seen from the table, The display device including the first filter film 104 has a reflectance at 450 nm of 30% to 47% and a reflectance at 550 nm of less than 10%. That is, each of the optical film layers of different thicknesses can obtain the effect of reflecting blue light and transmitting green light and red light.

As shown in FIG. 7 , according to an embodiment of the present disclosure, in order to reduce the reflection of external light, a blue-violet light absorption may be disposed on the surface of the first substrate 101 opposite to the color film layer 103. Layer 106, blue-violet light absorbing layer 106 is configured to absorb blue light and ultraviolet light from ambient light. For example, the blue-violet light absorbing layer 106 may be disposed on a side of the first filter film 104 close to the first base substrate 101. For example, the blue-violet light absorbing layer 106 may be disposed on a side of the first filter film 104 away from the light source. For example, the blue-violet light absorbing layer 106 can be fabricated according to its function, and an ordinary optical film layer having blue light and ultraviolet light absorption can also be used. For example, the blue-violet light absorbing layer 106 may be formed using a single layer or a multilayer film, and the material of the blue-violet light absorbing layer 106 may include titanium oxide. For example, the violet light absorbing layer 106 has substantially no or little effect on the light emitted from the display device.

As shown in FIG. 8 , a color filter substrate according to an embodiment of the present disclosure further includes a second filter film 105 , and the second filter film 105 may be disposed on a side of the color film layer 103 away from the first substrate 101 . And configured to pass the first color light and reflect the second color light. For example, the second filter film 105 can also be configured to reflect the third color light. The second color light and/or the third color light that passes downward through the color film layer 103 may be reflected by the second color filter film 105, and the reflected light may be reused by the second pattern 1032 and/or the third pattern 1033. Therefore, the problem of loss of light emitted by the QD can be solved, and the second color light and/or the third color light can be reflected back upward, and the light emitted downward by the QD can be effectively utilized, thereby improving the light effect. The arrangement of the second filter film 105 can also serve to encapsulate and protect the QD while achieving an improvement in optical efficiency. For example, the second filter film 105 may also be formed of a plurality of layers of materials having different refractive indices. For example, as described above, the first color light is blue light, the second color light is green light, and the third color light is red light.

For example, the second filter film 105 can be fabricated according to its function, for example, an optical film layer having a general blue light and reflecting green light and red light can be employed.

For example, as shown in FIG. 8, the color film layer 103 is closer to the light source than the first filter film 104 (see also FIGS. 3 to 5). For example, the first filter film 104 is disposed on a side of the color film layer 103 away from the light source.

For example, as shown in FIG. 8, the second filter film 105 is closer to the light source than the color filter layer 103. For example, the second filter film 105 may be disposed on a side of the color film layer 103 close to the light source.

For example, as shown in FIG. 8, the first filter film 104 and the second filter film 105 are disposed on both sides of the color filter layer 103.

For example, the first base substrate 101 and the third base substrate 301 may be two substrates of the display panel, the first base substrate 101 may be a base substrate of a color filter substrate, and the third base substrate 301 may be an array. A base substrate of a substrate. Both the array substrate and the color filter substrate may be referred to as a display substrate.

In the embodiment of the present disclosure, a liquid crystal display panel is taken as an example, but is not limited thereto. For example, it may also be an organic light-emitting diode (OLED) display panel. When the display panel is an OLED display panel, the light source may be an OLED device on the light emitting substrate of the OLED display panel.

At least one embodiment of the present disclosure provides a display device, as shown in any of FIGS. 3-5 and 7-8, including any color film substrate 10 provided by at least one embodiment of the present disclosure.

It should be noted that, according to at least one embodiment of the present disclosure, a display device is provided, and the second filter film 105 may not be disposed on the first substrate 101, but disposed on the second substrate 201, thereby The intermediate substrate 20 can function as a filter substrate. Thus, the filter substrate includes a second substrate 201 and an upper polarizer 202 and a second filter film 105 disposed on the second substrate 201, the second filter film 105 being configured to pass the first color light, Reflecting the second color of light. For example, the second filter film 105 is also configured to reflect the third color light.

At least one embodiment of the present disclosure provides a display device, as shown in any of FIGS. 3-5 and 7-8, including:

The display substrate includes a color film layer 103 and a first filter film 104, and the color film layer 103 includes a first pattern 1031 and a second pattern 1032;

The first pattern 1031 is configured to emit the first color light 01 after the excitation light passes through the first pattern 1031, and the second pattern 1032 is configured to emit the second color light 02 after the excitation light passes through the second pattern 1032.

The first filter film 104 is located on a side of the color film layer 103 away from the light source, and is configured to reflect a portion of the first color light 01 and pass the second color light 02.

For example, a description of each component in the display device can be referred to as previously described.

For example, the display device may be: a liquid crystal display panel, an electronic paper, an OLED display panel, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like, or any product or component having a display function.

For example, the first base substrate 101 and the third base substrate 301 may be glass substrates, but are not limited thereto. The second base substrate 102 may be a glass substrate or a flexible substrate, but is not limited thereto.

In the embodiment of the present disclosure, the first color light is blue light, the second color light is green light, and the third color light is red light as an example, but is not limited thereto. The quantum dots included in the color filter layer can be produced by a usual method using a usual material. Optical film layers of different refractive indices can be produced by adjustment of the fabrication process. The same material can have different refractive indices under different fabrication processes. The fabrication of the optical film layer can be seen in the usual design. The quantum dot color film layer and the metal mesh polarizer can be fabricated by a usual process.

In the embodiment of the present disclosure, the color film layer 103 is formed on the first base substrate 101 as an example, but is not limited thereto. The color film layer 103 can also be formed on the second substrate 201. Similarly, the embodiment of the present disclosure is described by taking the first filter film 104 on the first base substrate 101 as an example, but is not limited thereto. The first filter film 104 may also be formed on the second substrate 201. The embodiment of the present disclosure is described by taking the second filter layer 105 on the first base substrate 101 as an example, but is not limited thereto. The second filter layer 105 may also be formed on the second substrate 201.

In the embodiment of the present disclosure, the blue-violet light absorbing layer 106 is disposed on the side of the first base substrate 101 away from the first filter film 104. The blue-violet light absorbing layer 106 may also be disposed on the first substrate. Between 101 and the first filter film 104.

For example, in the embodiment of the present disclosure, the structure between the first base substrate 101 and the second base substrate 201 is exploded. For example, adjacent film layers may be in contact with each other at the time of fabrication, but are not limited thereto.

For example, at least one of the first pattern 1031, the second pattern 1032, and the third pattern 1033 includes a quantum dot or a fluorescent material. In the embodiment of the present disclosure, at least one of the first pattern 1031, the second pattern 1032, and the third pattern 1033 includes a quantum dot material as an example for description.

There are a few points to note:

(1) Unless otherwise defined, the same reference numerals indicate the same meaning in the embodiments of the present disclosure and the drawings.

(2) In the drawings of the embodiments of the present disclosure, only the structures related to the embodiments of the present disclosure are referred to, and other structures may be referred to the general design.

(3) For the sake of clarity, the thickness of the layer or region is enlarged in the drawings for describing the embodiments of the present disclosure. It will be understood that when an element such as a layer, a film, a region or a substrate is referred to as being "on" or "lower" Or there may be intermediate elements.

(4) The features of the same embodiment and different embodiments of the present disclosure may be combined with each other without conflict.

The above is only the specific embodiment of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the disclosure. It should be covered within the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be determined by the scope of the claims.

Claims

A color film substrate comprising:

a first substrate;

a color film layer on the first substrate, including a first pattern and a second pattern, the first pattern being configured to emit excitation light through the first pattern to emit first color light, The second pattern is configured to emit the second color light after the excitation light passes through the second pattern,

The first filter film is disposed on a side of the color film layer adjacent to the first substrate, and is configured to reflect a portion of the first color light and pass the second color light.
The color filter substrate of claim 1, wherein the first filter film comprises at least two optical film layers having different refractive indices.
The color filter substrate according to claim 1 or 2, wherein the material of each of the optical film layers comprises SiO x , Al 2 O 3 , MgF, SiNy, Ti 3 O 5 , ZrO 2 , Nb 2 O 5 and Ta 2 O At least one of 5 .
The color filter substrate according to claim 2 or 3, wherein each of the optical film layers has a refractive index ranging from 1.3 to 2.6.
The color filter substrate according to any one of claims 2 to 4, wherein each of the optical film layers has a thickness ranging from 10 to 65 nm.
The color filter substrate according to any one of claims 1 to 5, wherein the first filter film comprises at least one optical film layer group, the optical film layer group including a first refractive index layer and a second refractive index a layer, a refractive index of the first refractive index layer being greater than a refractive index of the second refractive index layer.
The color filter substrate according to claim 6, wherein the first refractive index layer has a refractive index ranging from 2.1 to 2.6, and the second refractive index layer has a refractive index ranging from 1.3 to 1.8.
The color filter substrate according to claim 6, wherein the first refractive index layer material comprises at least one of SiNy, ZrO 2 , Ti 3 O 5 , Nb 2 O 5 and Ta 2 O 5 , the second The refractive index layer material includes at least one of SiOx, Al 2 O 3 and MgF.
The color filter substrate according to any one of claims 2 to 5, wherein a refractive index of the at least two optical film layers gradually increases from a direction in which the first base substrate is directed to the color film layer .
The color filter substrate according to any one of claims 1 to 9, wherein the color film layer further comprises a third pattern, the third pattern being configured to emit the excitation light through the third pattern The third color light, the first filter film is further configured to pass the third color light.
The color filter substrate according to claim 10, wherein the first color light is blue light, the second color light is green light, and the third color light is red light.
The color filter substrate of claim 10, wherein the material of the third pattern comprises quantum dots, and the material of the second pattern comprises quantum dots.
The color filter substrate according to claim 10, wherein the wavelength of the first color light is smaller than the wavelength of the second color light, and the wavelength of the second color light is smaller than the wavelength of the third color light, The wavelength of the excitation light is less than or equal to the wavelength of the first color light.
The color filter substrate according to any one of claims 1 to 13, further comprising a blue-violet light absorbing layer, wherein the blue-violet light absorbing layer is located on a side of the first filter film away from the color film layer, The blue-violet light absorbing layer is configured to absorb blue light and ultraviolet light in external light.
The color filter substrate according to any one of claims 1 to 14, further comprising a second filter film, wherein the second filter film is located on a side of the color film layer away from the first substrate And configured to reflect the second color light by the first color light.
The color filter substrate of claim 5, wherein the second filter film is further configured to reflect the third color light.
A display device comprising the color filter substrate of any one of claims 1-16.
A display device comprising a filter substrate and the color filter substrate according to any one of claims 1 to 14, wherein the filter substrate is located on a side of the color film layer away from the first substrate; And including a second substrate and a second filter film thereon, the second filter film configured to reflect the second color light by the first color light.
The display device of claim 18, wherein the second filter film is further configured to reflect the third color light.
A display device comprising:

a display substrate comprising a color film layer and a first filter film, the color film layer comprising a first pattern and a second pattern;

a light source, located on one side of the display substrate, configured to emit excitation light;

Wherein the first pattern is configured to emit the first color light after the excitation light passes through the first pattern, and the second pattern is configured to pass the excitation light through the second pattern Two color light,

The first filter film is located on a side of the color film layer away from the light source, and is configured to reflect a portion of the first color light and pass the second color light.
The display device according to claim 20, further comprising a second filter film, wherein the second filter film is located on a side of the color film layer adjacent to the light source, and is configured to pass the first Color light that reflects the second color of light.
The display device according to claim 20 or 21, further comprising a blue-violet light absorbing layer, wherein the blue-violet light absorbing layer is located on a side of the first filter film away from the color film layer, and the blue-violet light absorption The layer is configured to absorb blue and ultraviolet light from ambient light.
The display device according to claim 20, wherein the color film layer further comprises a third pattern, the third pattern being configured to emit the third color light after passing the excitation light through the third pattern, The first filter film is also configured to pass the third color of light.
The display device according to claim 23, wherein a wavelength of the first color light is smaller than a wavelength of the second color light, and a wavelength of the second color light is smaller than a wavelength of the third color light, The wavelength of the excitation light is less than or equal to the wavelength of the first color light.
The display device according to claim 23 or 24, wherein the material of the third pattern comprises quantum dots, and the material of the second pattern comprises quantum dots.