WO2023093433A1

WO2023093433A1 - Color filter substrate, display panel, and display apparatus

Info

Publication number: WO2023093433A1
Application number: PCT/CN2022/127577
Authority: WO
Inventors: 贾东旺; 张亚文; 贾喆
Original assignee: 北京有竹居网络技术有限公司
Priority date: 2021-11-26
Filing date: 2022-10-26
Publication date: 2023-06-01
Also published as: WO2023093433A9; CN114019715A

Abstract

Provided are a color filter substrate (100), a display panel (10), and a display apparatus (1). The color filter substrate (100) comprises: a color filter layer (110), a first wave plate (120), a second wave plate (130), a first polaroid (140), and a composite film layer (150), wherein the composite film layer (150) is located on the side of the color filter layer (110) that is away from a liquid crystal layer, the first wave plate (120) is located on the side of the composite film layer (150) that is away from the color filter layer (110), the second wave plate (130) is located on the side of the composite film layer (150) that is close to the liquid crystal layer, and the first polaroid (140) is located on the side of the first wave plate (120) that is away from the composite film layer (150); the composite film layer (150) is used for reflecting a light beam in a first direction and transmitting a light beam in a second direction; the first wave plate (120) cooperates with the first polaroid (140) to prevent external ambient light, which is reflected by the composite film layer (150), from being emitted from a light emergent face; and the first wave plate (120) cooperates with the second wave plate (130) for modulating first linearly polarized light that is emitted from the liquid crystal layer into second linearly polarized light, the polarization direction of the first linearly polarized light being the same as that of the second linearly polarized light.

Description

Color filter substrate, display panel and display device

Cross References to Related Applications

This application is based on the Chinese application with the application number 202111422065.1 and the filing date is November 26, 2021, and claims its priority. The disclosure content of the Chinese application is hereby incorporated into this application as a whole.

technical field

The present disclosure relates to the field of display technology, and in particular to a color filter substrate, a display panel and a display device.

Background technique

New display technologies include electronic paper displays, liquid crystal displays (Liquid Crystal Display, LCD), active light-emitting diode (Organic Light-Emitting Diode) displays, etc. Among them, the LCD is a passive display, under the illumination of the backlight source, the display function is realized based on the characteristics of linearly polarized light and the voltage deflection characteristics of the liquid crystal.

Contents of the invention

In a first aspect, the present disclosure provides a color filter substrate, including: a color filter layer, a first wave plate, a second wave plate, a first polarizer, and a composite film layer; the composite film layer is located on the color filter layer On the side away from the liquid crystal layer, the first wave plate is located on the side of the composite film layer away from the color filter layer, and the second wave plate is located on the side of the composite film layer close to the liquid crystal layer, The first polarizer is located on the side of the first wave plate away from the composite film layer; the composite film layer is used to reflect the light beam in the first direction and transmit the light beam in the second direction, and the first direction is the direction in which the first wave plate points to the second wave plate, and the second direction is the direction in which the second wave plate points to the first wave plate; the first wave plate and the first wave plate The polarizer is used to prevent the external ambient light reflected by the composite film layer from exiting the light exit surface of the color filter substrate; the first wave plate and the second wave plate are used to emit light from the liquid crystal layer The first linearly polarized light is modulated into the second linearly polarized light, and the polarization direction of the first linearly polarized light is the same as that of the second linearly polarized light.

In some embodiments, both the first wave plate and the second wave plate are quarter wave plates, and the fast axis of the first wave plate is perpendicular to the fast axis of the second wave plate.

In some embodiments, the fast axis of the first wave plate is symmetrical to the fast axis of the second wave plate along the polarization direction of the first polarizer.

In some embodiments, the composite film layer includes a light-reflecting surface and a light-transmitting surface; wherein, the first wave plate is provided on a side close to the light-reflecting surface, and the first wave plate is provided on a side close to the light-transmitting surface. The second wave plate and the color filter layer.

In some embodiments, the second wave plate is located between the color filter layer and the composite film layer.

In some embodiments, the second wave plate is located on a side of the color filter layer away from the composite film layer.

In some embodiments, the color filter substrate further includes: a transparent substrate; the transparent substrate is located on a side of the first polarizer close to the first wave plate.

In some embodiments, the color filter substrate further includes: a touch layer; the touch layer is located between the transparent substrate and the color filter layer.

In some embodiments, the color filter substrate further includes: a transparent substrate; the transparent substrate is located between the second wave plate and the color filter layer, and the second wave plate is located close to the transparent substrate one side of the first wave plate.

In some embodiments, the color filter substrate further includes: a touch layer; the touch layer is located between the transparent substrate and the first wave plate.

In some embodiments, an anti-reflection layer is provided on a surface of the first polarizer away from the color filter layer.

In some embodiments, the color filter substrate further includes: a protective film layer; the protective film layer is located on the side of the color filter substrate closest to the liquid crystal layer; the protective film layer is used to isolate the liquid crystal.

In a second aspect, the present disclosure provides a display panel, including: any color filter substrate provided in the first aspect.

In some embodiments, the display panel further includes: an array substrate and a liquid crystal layer, wherein the array substrate is located on a side of the liquid crystal layer away from the color filter substrate.

In some embodiments, the array substrate includes: a second polarizer; the second polarizer is located on a side of the array substrate farthest from the liquid crystal layer.

In some embodiments, the polarization direction of the second polarizer is parallel or perpendicular to the polarization direction of the first polarizer.

In a third aspect, the present disclosure provides a display device, including: the display panel provided in the second aspect.

In some embodiments, the display device further includes: a backlight module, the light-emitting surface of the backlight module faces the surface of the array substrate away from the color filter substrate.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description serve to explain the principles of the disclosure.

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, In other words, other drawings can also be obtained from these drawings without paying creative labor.

FIG. 1 is a schematic structural diagram of a color filter substrate provided by the present disclosure;

FIG. 2 is a schematic diagram of beam transmission provided by the present disclosure;

FIG. 3 is a schematic diagram of another beam transmission provided by the present disclosure;

FIG. 4 is a schematic structural diagram of another color filter substrate provided by the present disclosure;

FIG. 5 is a schematic structural diagram of another color filter substrate provided by the present disclosure;

FIG. 6 is a schematic structural diagram of another color filter substrate provided by the present disclosure;

FIG. 7 is a schematic structural diagram of another color filter substrate provided by the present disclosure;

FIG. 8 is a schematic diagram of another beam transmission provided by the present disclosure;

FIG. 9 is a schematic diagram of another beam transmission provided by the present disclosure;

FIG. 10 is a schematic structural diagram of another color filter substrate provided by the present disclosure;

FIG. 11 is a schematic structural diagram of another color filter substrate provided by the present disclosure;

FIG. 12 is a schematic structural diagram of a display panel provided by the present disclosure;

FIG. 13 is a schematic structural diagram of a display device provided by the present disclosure.

Detailed ways

In order to more clearly understand the above objects, features and advantages of the present disclosure, the solutions of the present disclosure will be further described below. It should be noted that, in the case of no conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other.

In the following description, many specific details are set forth in order to fully understand the present disclosure, but the present disclosure can also be implemented in other ways than described here; obviously, the embodiments in the description are only some of the embodiments of the present disclosure, and Not all examples.

The inventors of the present disclosure have found that in the related art, when the LCD displays images, the external ambient light incident into the LCD is also reflected by the interior and surface of the LCD, and the reflected external ambient light is emitted from the light-emitting surface of the LCD, making the LCD High noise in the outgoing light beam leads to high noise in the display screen and affects the display quality.

In view of this, embodiments of the present disclosure provide a color filter substrate to improve the display quality of images.

FIG. 1 is a schematic structural diagram of a color filter substrate provided by the present disclosure. As shown in FIG. 1 , the color filter substrate 100 includes: a color filter layer 110 , a first wave plate 120 , a second wave plate 130 , a first polarizer 140 and a composite film layer 150 .

The composite film layer 150 is located on the side of the color filter layer 110 away from the liquid crystal layer. The first wave plate 120 is located on the side of the composite film layer 150 away from the color filter layer 110. The second wave plate 130 is located on the side of the composite film layer 150 close to the liquid crystal layer. The first polarizer 140 is located on a side of the first wave plate 120 away from the composite film layer 150 .

The composite film layer 150 is used to reflect the light beam in the first direction and transmit the light beam in the second direction. The first direction is the direction in which the first wave plate 120 points to the second wave plate 130 , and the second direction is the direction in which the second wave plate 130 points to the first wave plate 120 .

The first wave plate 120 cooperates with the first polarizer 140 to prevent the ambient light reflected by the composite film layer 150 from exiting the light exit surface of the color filter substrate 100 .

The first wave plate 120 and the second wave plate 130 cooperate to modulate the first linearly polarized light emitted by the liquid crystal layer 200 into the second linearly polarized light. The polarization direction of the first linearly polarized light is the same as that of the second linearly polarized light.

Exemplarily, as shown in FIG. 1 , the composite film layer 150 includes a light-reflecting surface 151 and a light-transmitting surface 152 . A first wave plate 120 is disposed near the reflective surface 151 . A first polarizer 140 is disposed on a side of the first wave plate 120 away from the composite film layer 150 . A second wave plate 130 and a color filter layer 110 are disposed on a side close to the light-transmitting surface 152 . In some embodiments, the second wave plate 130 may be located between the color filter layer 110 and the composite film layer 150 , as shown in FIG. 1 . In other embodiments, the second wave plate 130 may be located on a side of the color filter layer 110 away from the composite film layer 150 .

The composite film layer 150 can reflect the light beam incident on the reflective surface 151 . For example, external ambient light is incident on the reflective surface 151 after passing through the first polarizer 140 , and the composite film layer 150 can reflect external ambient light. The composite film layer 150 can also transmit light beams incident on the transmissive surface 152 . For example, when the second wave plate 130 is located between the color filter layer 110 and the composite film layer 150, the light beam emitted by the color filter layer 110 is modulated by the second wave plate 130 and then enters the transmissive surface 152, and the composite film layer 150 able to transmit the beam. For another example, when the second wave plate 130 is located on the side of the color filter layer 110 away from the composite film layer 150 , the light beam emitted by the color filter layer 110 enters the transmissive surface 152 , and the composite film layer 150 can transmit the light beam.

FIG. 2 is a schematic diagram of beam transmission provided by the present disclosure. Exemplarily, the second wave plate 130 is located between the color filter layer 110 and the composite film layer 150 . The light beam emitted by the liquid crystal layer is the first linearly polarized light. The first linearly polarized light is incident on the color filter layer 110, and the color filter layer 110 performs color filtering on the first linearly polarized light, so that the color filter layer 110 emits a colored light beam, and the color filter layer 110 functions as a filter without affecting the light beam. The polarization state of the color filter layer 110 is still linearly polarized. The colored linearly polarized light emitted by the color filter layer 110 enters the second wave plate 130, and the second wave plate 130 can modulate the colored linearly polarized light into the first circularly polarized light. The first circularly polarized light may be left-handed circularly polarized light, or may be right-handed circularly polarized light. The first circularly polarized light can pass through the composite film layer 150 and enter the first wave plate 120, the composite film layer 150 will not affect the polarization state of the first circularly polarized light, and the first wave plate 120 can convert the first circularly polarized light It is modulated into the second linearly polarized light, and the direction of the second linearly polarized light is the same as that of the first linearly polarized light, that is to say, the first wave plate 120 and the second wave plate 130 cooperate with the polarization state of the light beam that will not exit the liquid crystal layer make an impact. The second linearly polarized light emitted by the first wave plate 120 is incident on the first polarizer 140, so that the light beams in the second linearly polarized light whose polarization direction is parallel to the polarization direction of the first polarizer 140 are emitted after passing through the first polarizer 140, Thereby, the screen can be displayed. Since the cooperation between the first wave plate 120 and the second wave plate 130 will not affect the polarization state of the first linearly polarized light emitted from the liquid crystal layer, the first polarizer 140 will not affect the amount of light passing through the light beam used to display the picture. , so that a higher quality picture can be displayed.

It should be noted that FIG. 2 only exemplarily shows the transmission process of the light beam when the second wave plate 130 is located between the color filter layer 110 and the composite film layer 150, and the second wave plate is located at the color filter layer 110 away from the composite film layer. When one side of the layer 150 is shown, the transmission process of the display beam is similar to that in FIG. 2 .

FIG. 3 is a schematic diagram of another beam transmission provided by the present disclosure. Exemplarily, as shown in FIG. 3 , the ambient light is incident on the first polarizer 140, and the first polarizer 140 can modulate the ambient light into a third linearly polarized light, and the polarization direction of the third linearly polarized light is the same as that of the first polarizer. 140 have the same polarization direction. The third linearly polarized light is incident to the first wave plate 120, and the first wave plate 120 can modulate the third linearly polarized light into the second circularly polarized light. The second circularly polarized light may be left-handed circularly polarized light or right-handed circularly polarized light. The second circularly polarized light is incident on the composite film layer 150, and the composite film layer 150 reflects the second circularly polarized light to form a third circularly polarized light. For example, if the second circularly polarized light is left-handed circularly polarized light, the third circularly polarized light is right-handed circularly polarized light, and if the second circularly polarized light is right-handed circularly polarized light, the third circularly polarized light is left-handed circularly polarized Light. The third circularly polarized light is incident on the first wave plate 120, and the first wave plate 120 can modulate the third circularly polarized light into the fourth linearly polarized light, and the polarization direction of the fourth linearly polarized light is the same as the polarization direction of the third linearly polarized light Vertical, that is, the polarization direction of the fourth linearly polarized light is perpendicular to the polarization direction of the first polarizer 140 , so the fourth linearly polarized light cannot pass through the first polarizer 140 . Apparently, external ambient light will not be emitted from the light-emitting surface of the color filter substrate. Since the external ambient light is the optical noise of the display screen, the noise of the display screen can be reduced, thereby improving the display quality of the screen.

In this embodiment, the color filter substrate includes: a color filter layer, a first wave plate, a second wave plate, a first polarizer, and a composite film layer; the composite film layer is located on the side of the color filter layer away from the liquid crystal layer, and the first wave plate The polarizer is located on the side of the composite film layer away from the color filter layer, the second wave plate is located on the side of the composite film layer close to the liquid crystal layer, and the first polarizer is located on the side of the first wave plate away from the composite film layer. The composite film layer can reflect the light beam in the first direction and transmit the light beam in the second direction. The first direction is the direction in which the first wave plate points to the second wave plate, and the second direction is the direction in which the second wave plate points to the first wave plate. That is, the composite film layer can reflect external ambient light and transmit the light beam emitted by the color filter layer for displaying images. The cooperation of the first wave plate and the first polarizer can prevent the external ambient light reflected by the composite film layer from exiting the light-emitting surface of the color filter substrate. The external ambient light is the optical noise of the display screen, so the optical noise of the display screen can be reduced and the optical noise of the display screen can be improved. The display quality of the screen. The cooperation of the first wave plate and the second wave plate can modulate the first linearly polarized light emitted by the liquid crystal layer into the second linearly polarized light, and the polarization direction of the first linearly polarized light is the same as that of the second linearly polarized light, that is, the first wave The polarizer and the second wave plate will not affect the light beam emitted by the liquid crystal layer, which can avoid the loss of the display light beam caused by the first polarizer, and display a high-quality picture, thereby improving the display quality of the picture.

In some embodiments, both the first wave plate 120 and the second wave plate 130 are quarter wave plates, and the fast axis of the first wave plate 120 is perpendicular to the fast axis of the second wave plate 130 .

The light beam passing through the quarter wave plate will be decomposed into two beams, one beam is parallel to the fast axis of the quarter wave plate, and the other beam is parallel to the slow axis of the quarter wave plate. Due to the different transmission speeds of light corresponding to the fast and slow axes, a 90° phase difference will be generated when the two beams of light pass through the quarter-wave plate. If the beam incident on the quarter-wave plate is linearly polarized, the beam exiting the quarter-wave plate is circularly polarized. If two quarter-wave plates have parallel fast axes, they can form a half-wave plate. If two quarter-wave plates have perpendicular fast axes, they will have no effect on the polarization state of the incident light.

Exemplarily, the fast axis of the first wave plate is symmetrical to the fast axis of the second wave plate along the polarization direction of the first polarizer. For example, the polarization direction of the first polarizer 140 is the X direction, the included angle between the fast axis direction of the first wave plate 120 and the polarization direction of the first polarizer 140 is 45°, the fast axis direction of the second wave plate 130 and the first The angle between the polarization direction of a polarizer 140 is also 45°, and the fast axis of the first wave plate 120 and the fast axis of the second wave plate 130 are symmetrical along the polarization direction of the first polarizer 140 .

In some embodiments, FIG. 4 is a schematic structural diagram of another color filter substrate provided in the present disclosure. FIG. 5 is a schematic structural diagram of another color filter substrate provided by the present disclosure. As shown in FIG. 4 and FIG. 5 , the color filter substrate 100 further includes: a transparent substrate 160 .

For example, the transparent substrate 160 may be located on a side of the first polarizer 140 close to the first wave plate 120 , as shown in FIG. 4 . For another example, the transparent substrate 160 may be located between the second wave plate 130 and the color filter layer 110 , and the second wave plate 130 is located on a side of the transparent substrate 160 close to the first wave plate 120 , as shown in FIG. 5 .

Exemplarily, the first wave plate 120, the composite film layer 150, the second wave plate 130 and the color filter layer 110 are sequentially arranged on one side of the transparent substrate 160, as shown in FIG. On one side, the first wave plate 120 , the composite film layer 150 , the color filter layer 110 and the second wave plate 130 are arranged in sequence. The first polarizer 140 is disposed on the other side of the transparent substrate 160 , and the first polarizer 140 can be fixed on the other side of the transparent substrate 160 by double-sided adhesive.

When preparing the color filter substrate 100, the process of preparing the first wave plate 120, the composite film layer 150, and the second wave plate 130 may be added to the known process of the color filter substrate. The preparation of the color filter substrate 100 The way is simple. In addition, the first wave plate 120 , the composite film layer 150 and the second wave plate 130 can all share the transparent substrate 160 , without additional substrate, and the thickness of the color filter substrate 100 can be reduced.

In this embodiment, the color filter substrate further includes: a transparent substrate, the transparent substrate is located on the side of the first polarizer close to the first wave plate, and the first wave plate, The composite film layer and the second wave plate are simple to realize. In addition, there is no need to separately provide substrates for the first wave plate, the composite film layer, and the second wave plate, and the thickness of the color filter substrate can be reduced.

Exemplarily, as shown in FIG. 5 , the color filter layer 110 is provided on one side of the transparent substrate 160, and the second wave plate 130, the composite film layer 150, and the first wave plate are sequentially arranged on the other side of the transparent substrate 160. 120 and the first polarizer 140.

When preparing the color filter substrate 100, the known process of the color filter substrate can be carried out on one side of the transparent substrate 160 to form the color filter substrate, and then the color filter substrate is turned over, and on the other side of the transparent substrate 160 The second wave plate 130 , the composite film layer 150 , the first wave plate 120 and the first polarizer 140 are sequentially prepared. In this way, the preparation of the second wave plate, the composite film layer, the first wave plate and the first polarizer will not affect the process of the color filter substrate. The second wave plate, the composite film layer, the first wave plate and the first The yield of the polarizer will not affect the color filter substrate, which is beneficial to improve the product yield of the color filter substrate 100 .

In this embodiment, the color filter substrate further includes: a transparent substrate, the transparent substrate is located between the second wave plate and the color filter layer, the second wave plate is located on the side of the transparent substrate close to the first wave plate, the second The preparation of the wave plate, the composite film layer, the first wave plate and the first polarizer will not affect the process of the color filter substrate, that is, the second wave plate, the composite film layer, the first wave plate and the first polarizer The yield rate will not affect the existing color filter substrate, which is beneficial to improve the product yield rate of the color filter substrate in the present disclosure.

In some embodiments, FIG. 6 is a schematic structural diagram of another color filter substrate provided in the present disclosure. Based on the color filter substrate of the embodiment shown in FIG. 4 , the color filter substrate 100 shown in FIG. 6 further includes: a touch layer 170 .

Wherein, the touch layer 170 is located between the transparent substrate 160 and the color filter layer 110 .

Exemplarily, the first wave plate 120 , the composite film layer 150 , the second wave plate 130 , the touch layer 170 and the color filter layer 110 are sequentially arranged on one side of the transparent substrate 160 . For example, the touch layer 170 may be located between the second wave plate 130 and the color filter layer 110 as shown in FIG. 6 . For another example, the touch layer 170 may be located between the composite film layer 150 and the second wave plate 130 . For another example, the touch layer 170 may be located between the composite film layer 150 and the first wave plate 120 . For another example, the touch layer 170 may be located between the transparent substrate 160 and the first wave plate 120 .

The touch layer 170 is disposed between the transparent substrate 160 and the color filter layer 110 , and the touch screen is embedded in the color filter substrate to form the color filter substrate 100 with a touch function. There is no need to additionally provide a substrate for the touch layer 170 , the number of substrates can be reduced, and thus the thickness of the color filter substrate can be reduced.

In this embodiment, the color filter substrate also includes: a touch layer, the touch layer is located between the transparent substrate and the color filter layer, the touch screen can be embedded in the color filter substrate, and an additional liner is required for the touch layer. At the bottom, the number of substrates can be reduced, thereby reducing the thickness of the color filter substrate.

In some embodiments, FIG. 7 is a schematic structural diagram of another color filter substrate provided in the present disclosure. Based on the color filter substrate of the embodiment shown in FIG. 5 , the color filter substrate 100 shown in FIG. 7 further includes: a touch layer 170 .

Wherein, the touch layer 170 is located between the transparent substrate 160 and the first wave plate 120 .

Exemplarily, a touch layer 170 , a second wave plate 130 , a composite film layer 150 , a first wave plate 120 and a first polarizer 140 are sequentially disposed on one side of the transparent substrate 160 . For example, the touch layer 170 may be located between the transparent substrate 160 and the second wave plate 130 as shown in FIG. 7 . For another example, the touch layer 170 may be located between the second wave plate 130 and the composite film layer 150 . For another example, the touch layer 170 may be located between the composite film layer 150 and the first wave plate 120 . For another example, the touch layer 170 may be located between the first wave plate 120 and the first polarizer 140 .

The touch layer 170 is disposed between the transparent substrate 160 and the first wave plate 120 , and the touch screen is externally arranged on the color filter substrate to form the color filter substrate 100 with a touch function. The touch screen can be formed by arranging the touch layer 170 on one side of the transparent substrate 160 as the substrate. There is no need to provide an additional substrate for the touch layer 170, and the number of substrates can be reduced, thereby reducing the color filter substrate. thickness of. In addition, the process surfaces of the touch layer 170 and the color filter substrate are located on both sides of the transparent substrate 160 , the preparation of the touch layer 170 will not affect the process of the color filter, which is beneficial to improve the product yield of the color filter substrate 100 .

In this embodiment, the color filter substrate further includes: a touch layer, the touch layer is located between the transparent substrate and the first wave plate, the touch layer can share the transparent substrate with the color filter layer, and no additional touch screen is required The substrate can reduce the number of substrates, thereby reducing the thickness of the color filter substrate. In addition, the process surfaces of the touch layer and the color filter substrate are located on both sides of the transparent substrate. The preparation of the touch layer will not affect the process of the color filter substrate, which is conducive to improving the product yield of the color filter substrate.

Based on the above embodiments, taking the color filter substrate 100 in which the touch layer 170 is located between the composite film layer 150 and the first wave plate 120 as an example, the effect of the color filter substrate 100 on the light beam is given.

FIG. 8 is a schematic diagram of another beam transmission provided by the present disclosure. As shown in FIG. 8 , the light beam emitted by the liquid crystal layer 200 (not shown in FIG. 8 , refer to FIG. 12 ) is the first linearly polarized light, and the first linearly polarized light is incident on the color filter layer 110. The linearly polarized light is color-filtered so that the color light beam emitted by the color filter layer 110 is still linearly polarized light. The colored linearly polarized light emitted by the color filter layer 110 is incident on the second wave plate 130, and the second wave plate 130 can modulate the colored linearly polarized light into a first circularly polarized light, and the first circularly polarized light can be left-handed circularly polarized light, or Can be right-handed circularly polarized light. The first circularly polarized light can pass through the composite film layer 150 and enter the touch layer 170, and the touch layer 170 includes transparent electrodes, so the first circularly polarized light can pass through the touch layer 170 and be transmitted to the first wave plate 120, composite The film layer 150 and the touch layer 170 will not affect the polarization state of the first circularly polarized light, the first wave plate 120 can modulate the first circularly polarized light into the second linearly polarized light, and the direction of the second linearly polarized light is the same as that of the first circularly polarized light The direction of a line of polarized light is the same. The second linearly polarized light emitted by the first wave plate 120 is incident on the first polarizer 140, so that the light beams in the second linearly polarized light whose polarization direction is parallel to the polarization direction of the first polarizer 140 are emitted after passing through the first polarizer 140, Thereby, the screen can be displayed.

FIG. 9 is a schematic diagram of another beam transmission provided by the present disclosure. As shown in FIG. 9 , external ambient light is incident on the first polarizer 140, and the first polarizer 140 can modulate the external ambient light into a third linearly polarized light, and the polarization direction of the third linearly polarized light is the same as that of the first polarizer 140. same. The third linearly polarized light is incident on the first wave plate 120, and the first wave plate 120 can modulate the third linearly polarized light into the second circularly polarized light, and the second circularly polarized light can be left-handed circularly polarized light or right-handed circularly polarized light Light, the second circularly polarized light is incident on the touch layer 170 .

The touch layer 170 includes a plurality of metal wires. The touch layer 170 reflects part of the second circularly polarized light and transmits another part of the second circularly polarized light. The touch layer 170 reflects part of the second circularly polarized light to form a fourth circularly polarized light. Light. For example, if the second circularly polarized light is left-handed circularly polarized light, the fourth circularly polarized light is right-handed circularly polarized light; if the second circularly polarized light is right-handed circularly polarized light, the fourth circularly polarized light is left-handed circularly polarized light Light. The fourth circularly polarized light is incident on the first wave plate 120, and the first wave plate 120 can modulate the fourth circularly polarized light into the fifth linearly polarized light, and the polarization direction of the fifth linearly polarized light is different from the polarization direction of the third linearly polarized light Vertical, that is, the polarization direction of the fifth linearly polarized light is perpendicular to the polarization direction of the first polarizer 140 , so the fifth linearly polarized light cannot pass through the first polarizer 140 .

Part of the second circularly polarized light transmitted by the touch layer 170 is incident to the composite film layer 150 , and the composite film layer 150 reflects this part of the second circularly polarized light to form a third circularly polarized light. For example, if the second circularly polarized light is left-handed circularly polarized light, the third circularly polarized light is right-handed circularly polarized light; if the second circularly polarized light is right-handed circularly polarized light, the third circularly polarized light is left-handed circularly polarized Light. The third circularly polarized light is incident on the first wave plate 120, and the first wave plate 120 can modulate the third circularly polarized light into the fourth linearly polarized light, and the polarization direction of the fourth linearly polarized light is the same as the polarization direction of the third linearly polarized light Vertical, that is, the polarization direction of the fourth linearly polarized light is perpendicular to the polarization direction of the first polarizer 140 , so the fourth linearly polarized light cannot pass through the first polarizer 140 .

In some embodiments, FIG. 10 is a schematic structural diagram of another color filter substrate provided by the present disclosure. As shown in FIG. 10 , an anti-reflection layer 141 is provided on the surface of the first polarizer 140 away from the color filter layer 110 .

Exemplarily, as shown in FIG. 10 , after ambient light is incident on the first polarizer 140 , the first polarizer 140 may transmit part of the ambient light and reflect part of the ambient light. The uneven surface formed by the anti-reflection layer 141 makes the directions of the ambient light reflected by the first polarizer 140 different, thereby realizing the diffuse reflection of the ambient light. In this way, the distribution of ambient light reflected by the color filter substrate 100 is relatively uniform, which avoids relatively large impact on the display screen, thereby improving the overall display quality of the screen.

In this embodiment, an anti-reflection layer is provided on the surface of the first polarizer away from the color filter layer, which can diffusely reflect the external ambient light, so that the noise distribution in the display screen is relatively uniform, thereby improving the overall display of the screen. quality.

In some embodiments, FIG. 11 is a schematic structural diagram of another color filter substrate provided by the present disclosure. As shown in FIG. 11 , the color filter substrate 100 further includes: a protective film layer 180 .

Wherein, the protective film layer 180 is located on the side of the color filter substrate closest to the liquid crystal layer. The protective film layer 180 is used to isolate the liquid crystal.

Exemplarily, as shown in FIG. 11 , the protective film layer 180 in the color filter substrate 100 is in direct contact with the liquid crystal in the liquid crystal layer, and the protective layer 180 can isolate the liquid crystal from the color filter layer 110 on the side of the protective layer 180 away from the liquid crystal layer, Or the second wave plate 130, or other film layers. It can not only prevent the liquid crystal from being damaged to the color filter layer, the second wave plate or other film layers, but also prevent the color filter layer, the second wave plate or other film layers from polluting the liquid crystal, thereby ensuring the display quality of the picture.

The present disclosure also provides a display panel. FIG. 12 is a schematic structural diagram of a display panel provided by the present disclosure. As shown in FIG. 12 , the display panel 10 includes: an array substrate 300 , a liquid crystal layer 200 and any color filter substrate 100 provided in the above-mentioned embodiments.

Wherein, the array substrate 300 is located on a side of the liquid crystal layer 200 away from the color filter substrate 100 .

The array substrate 300 includes: a second polarizer 310 , and the second polarizer 310 is located on a side of the array substrate 300 farthest from the liquid crystal layer 200 .

Specifically, the second polarizer 310 can modulate the received backlight into linearly polarized light. The array substrate 300 includes a plurality of pixel units, and each pixel unit can drive the liquid crystal corresponding to the area where the pixel unit is located to deflect according to the voltage. The linearly polarized light emitted by the second polarizer 310 is deflected based on its own deflection angle, and the first linearly polarized light emitted by the liquid crystal layer 200 is the deflected linearly polarized light. The color filter substrate 100 emits colored light beams based on the first linearly polarized light to display images, so that the display panel 10 can display images.

The display panel 10 in the present disclosure has the beneficial effects of the color filter substrate 100 in the above-mentioned embodiments, which will not be repeated here.

In some embodiments, the polarization direction of the second polarizer 310 is parallel or perpendicular to the polarization direction of the first polarizer.

Exemplarily, the polarization direction of the second polarizer 310 is perpendicular to the polarization direction of the first polarizer, and the display panel 10 is a normally white display panel; or, the polarization direction of the second polarizer 310 is perpendicular to the polarization direction of the first polarizer In parallel, the display panel 10 is a normally black display panel.

The present disclosure also provides a display device. FIG. 13 is a schematic structural diagram of a display device provided by the present disclosure. As shown in FIG. 13 , the display device 1 includes: a backlight module 20 and any display panel 10 provided in the above-mentioned embodiments.

As shown in FIG. 12 and FIG. 13 , the light-emitting surface of the backlight module 20 faces the surface of the array substrate 300 away from the color filter substrate 100 .

The display device 1 in the present disclosure has the beneficial effects of the display panel 10 in the above-mentioned embodiments, which will not be repeated here. In a specific implementation, the display device 1 can be a mobile phone, a tablet computer, a notebook computer, or any product or component with a display function such as a TV, a display area, a digital photo frame, a navigator, and a smart wearable display device. This is not specifically limited.

It should be noted that in this article, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these No such actual relationship or order exists between entities or operations. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The above descriptions are only specific implementation manners of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

A color filter substrate, comprising: a color filter layer, a first wave plate, a second wave plate, a first polarizer, and a composite film layer;

The composite film layer is located on the side of the color filter layer away from the liquid crystal layer, the first wave plate is located on the side of the composite film layer away from the color filter layer, and the second wave plate is located on the composite film layer. The film layer is close to the side of the liquid crystal layer, and the first polarizer is located on the side of the first wave plate away from the composite film layer;

The composite film layer is used to reflect light beams in a first direction and transmit light beams in a second direction, the first direction is the direction in which the first wave plate points to the second wave plate, and the second direction is The second wave plate points in the direction of the first wave plate;

The first wave plate cooperates with the first polarizer to prevent the ambient light reflected by the composite film layer from exiting the light exit surface of the color filter substrate;

The first wave plate and the second wave plate cooperate to modulate the first linearly polarized light emitted by the liquid crystal layer into a second linearly polarized light, and the polarization direction of the first linearly polarized light is the same as that of the second linearly polarized light. Polarized light is polarized in the same direction.
The color filter substrate according to claim 1, wherein,

Both the first wave plate and the second wave plate are quarter wave plates, and the fast axis of the first wave plate is perpendicular to the fast axis of the second wave plate.
The color filter substrate according to claim 2, wherein the fast axis of the first wave plate is symmetrical to the fast axis of the second wave plate along the polarization direction of the first polarizer.
The color filter substrate according to claim 1, wherein the composite film layer includes a light-reflecting surface and a light-transmitting surface; wherein, the first wave plate is arranged on a side close to the light-reflecting surface, and is close to the light-transmitting surface. One side is provided with the second wave plate and the color filter layer.
The color filter substrate according to claim 4, wherein the second wave plate is located between the color filter layer and the composite film layer.
The color filter substrate according to claim 4, wherein the second wave plate is located on a side of the color filter layer away from the composite film layer.
The color filter substrate according to any one of claims 1 to 6, further comprising: a transparent substrate;

The transparent substrate is located on a side of the first polarizer close to the first wave plate.
The color filter substrate according to claim 7, further comprising: a touch layer;

The touch layer is located between the transparent substrate and the color filter layer.
The color filter substrate according to any one of claims 1 to 5, further comprising: a transparent substrate;

The transparent substrate is located between the second wave plate and the color filter layer, and the second wave plate is located on a side of the transparent substrate close to the first wave plate.
The color filter substrate according to claim 9, further comprising: a touch layer;

The touch layer is located between the transparent substrate and the first wave plate.
The color filter substrate according to any one of claims 1 to 10, wherein an anti-reflection layer is provided on a surface of the first polarizer away from the color filter layer.
The color filter substrate according to any one of claims 1 to 11, further comprising: a protective film layer;

The protective film layer is located on the side of the color filter substrate closest to the liquid crystal layer;

The protective film layer is used to isolate liquid crystals.
A display panel, comprising: the color filter substrate according to any one of claims 1 to 12.
The display panel according to claim 13, further comprising:

An array substrate and a liquid crystal layer, wherein the array substrate is located on a side of the liquid crystal layer away from the color filter substrate.
The display panel according to claim 14, wherein the array substrate comprises: a second polarizer;

The second polarizer is located on the side of the array substrate farthest from the liquid crystal layer.
The display panel according to claim 15, wherein the polarization direction of the second polarizer is parallel to or perpendicular to the polarization direction of the first polarizer.
A display device, comprising: the display panel according to any one of claims 13-16.
The display device according to claim 17 , further comprising: a backlight module, the light-emitting surface of the backlight module facing the surface of the array substrate away from the color filter substrate.