CN113985641A - Color film substrate, display panel and manufacturing method of color film substrate - Google Patents
Color film substrate, display panel and manufacturing method of color film substrate Download PDFInfo
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 5
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 5
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
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- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
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Abstract
The embodiment of the application discloses a color film substrate, a display panel and a manufacturing method of the color film substrate. The color film substrate comprises a substrate and a plurality of refraction layers, wherein the refraction layers are sequentially arranged on the substrate, the refractive indexes of two adjacent refraction layers are different, and the refractive index of the refraction layer close to the substrate in the refraction layers is different from the refractive index of the substrate. This application is through setting up the refraction layer of different refracting indexes for the light that different positions sent can reach same observation point after the refraction on multilayer refraction layer, thereby improves the colour cast problem of different observation points, improves the visual angle of various membrane base plates.
Description
Technical Field
The application relates to the field of display, in particular to a color film substrate, a display panel and a manufacturing method of the color film substrate.
Background
With the development of display technologies, the viewing angle problem of display panels gradually becomes the first technology of high-end products, but the light-emitting angle of a color film substrate in the current display panel is single, so that color cast exists in different observation points, and the viewing angle of the color film substrate is small.
Disclosure of Invention
The embodiment of the application provides a color film substrate, a display panel and a manufacturing method of the color film substrate, and can solve the problem that the visual angle of the color film substrate is small.
An embodiment of the present application provides a color film substrate, including:
a substrate base plate;
the substrate comprises a substrate base plate, a plurality of refraction layers and a plurality of reflection layers, wherein the substrate base plate is provided with a plurality of refraction layers; the refractive index of the refraction layer close to the substrate base plate in the plurality of refraction layers is different from that of the substrate base plate.
Optionally, in some embodiments of the present application, the refractive indices of the plurality of refractive layers are different.
Optionally, in some embodiments of the present application, a plurality of protrusions are juxtaposed on a surface of at least one of the refraction layers, and a first gap is formed between adjacent protrusions.
Optionally, in some embodiments of the present application, the cross-sectional area of the protrusion gradually increases in a direction approaching the substrate base plate; or the like, or, alternatively,
the cross-sectional area of the protrusion gradually decreases in a direction approaching the substrate base plate.
Optionally, in some embodiments of the present application, the refractive index of the plurality of refractive layers gradually increases in a direction away from the substrate base plate; or the like, or, alternatively,
the refractive index of the plurality of refraction layers is gradually reduced along the direction far away from the substrate base plate.
Optionally, in some embodiments of the present application, the thickness of the plurality of refractive layers gradually increases in a direction away from the substrate base plate; or the like, or, alternatively,
the thickness of the plurality of refraction layers is gradually reduced along the direction far away from the substrate base plate.
Optionally, in some embodiments of the present application, the sum of the thicknesses of the plurality of refractive layers is greater than or equal to 10nm and less than or equal to 3000 nm.
Optionally, in some embodiments of the present application, a material of the refraction layer includes one or more of silicon oxide, silicon nitride, and silicon oxynitride.
Optionally, in some embodiments of the present application, the color filter substrate includes a plurality of wire grids, the plurality of wire grids are arranged in parallel on the substrate, and a second gap is formed between two adjacent wire grids.
Optionally, in some embodiments of the present application, the extension direction of the protrusions is the same as the extension direction of the wire grid; the distribution direction of the plurality of projections is the same as the distribution direction of the plurality of wire grids.
Optionally, in some embodiments of the present application, the first gap and the second gap are offset in a thickness direction of the substrate base.
Optionally, in some embodiments of the present application, the substrate base plate has a first side and a second side opposite to each other, a plurality of the wire grids are juxtaposed on the first side, and a plurality of the refraction layers are sequentially disposed on the wire grids; the color film substrate further comprises a color resistance layer, and the color resistance layer is arranged on the second side face.
Correspondingly, the embodiment of the present application further provides a display panel, including:
the color film substrate of any one of the above;
the array substrate is positioned on the second side face of the substrate in the color film substrate; and
and the liquid crystal layer is filled between the color film substrate and the array substrate.
Correspondingly, an embodiment of the present application further provides a manufacturing method of a color film substrate, including:
providing a substrate base plate;
forming a plurality of wire grids on the substrate, wherein the wire grids are arranged in parallel;
the substrate base plate is sequentially provided with a plurality of layers of refraction layers, the refraction layers are adjacent to each other, the refraction index of the refraction layers is different, and the refraction index of the refraction layer close to the substrate base plate in the plurality of layers of refraction layers is different from that of the substrate base plate.
The color film substrate comprises a substrate and a plurality of refraction layers sequentially arranged on the substrate, the refractive indexes of two adjacent refraction layers are different, and the refractive index of the refraction layer close to the substrate in the plurality of refraction layers is different from the refractive index of the substrate. Through the arrangement of the refraction layers with different refractive indexes, light rays emitted from different positions can reach the same observation point after being refracted through the plurality of refraction layers, so that the color cast problem of different observation points is improved, and the visual angle of the color film substrate is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a color filter substrate according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
fig. 3 is a flowchart of a method for manufacturing a color filter substrate according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of step S200 in fig. 3 according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of step S300 in fig. 3 according to an embodiment of the present application.
Description of reference numerals:
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In the present application, unless indicated to the contrary, the use of the directional terms "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, and more particularly to the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device.
The embodiment of the application provides a color film substrate, a display panel and a manufacturing method of the color film substrate. The following are detailed below. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments.
First, an embodiment of the present application provides a color filter substrate, which includes a substrate and a plurality of refraction layers, wherein the plurality of refraction layers are sequentially disposed on the substrate, refractive indexes of two adjacent refraction layers are different, and a refractive index of a refraction layer close to the substrate in the plurality of refraction layers is different from a refractive index of the substrate.
Fig. 1 is a schematic structural diagram of a color filter substrate according to an embodiment of the present disclosure, and as shown in fig. 1, the color filter substrate 100 includes a substrate 110 for supporting film structures of the color filter substrate 100. The substrate 110 may be a glass substrate or other type of substrate, and the specific material thereof may be adjusted according to the actual design requirement, which is not limited herein.
It should be noted that, since the entire color filter substrate 100 is located on the light exit side, in order to ensure the light exit rate of the color filter substrate 100, the used substrate 110 needs to have better light transmittance, so as to avoid a large amount of loss of light when passing through the substrate 110, thereby improving the light exit rate effect of the color filter substrate 100.
The color filter substrate 100 includes a plurality of refraction layers 120, the plurality of refraction layers 120 are sequentially disposed on the substrate 110 along a direction away from the substrate 110, and emergent light passes through the refraction layers 120 and is emitted at different angles through refraction of the refraction layers 120, so as to reach different observation points. The emergent angle of emergent light can be changed by adjusting the refractive index of the refraction layer 120 so as to meet the light requirements of different observation points.
The refractive indexes of the two adjacent refraction layers 120 are different, that is, the emergent angle of light can be changed when the light passes through one refraction layer 120, the emergent angle of the light can be controlled by adjusting the refractive index of the adjacent refraction layer 120, so that the emergent light emitted from different positions can reach the same observation point, the color cast problem of different observation points is improved, and the display effect of the color film substrate 100 is improved.
It should be noted that, except that the refractive indexes of the two adjacent refractive layers 120 are different, the refractive indexes of the refractive layers 120 arranged at intervals can be the same or different, the specific arrangement mode can be adjusted according to the actual design requirement, and only the emergent light emitted from different positions needs to reach the same observation point, so that the display effect of the color film substrate 100 is improved.
Optionally, the refractive index of the refractive layer 120 close to the substrate base plate 110 in the multi-layer refractive layer 120 is different from the refractive index of the substrate base plate 110, that is, the angle of the light entering the substrate base plate 110 from the refractive layer 120 or entering the refractive layer 120 from the substrate base plate 110 changes, and at this time, the substrate base plate 110 can also serve as the refractive layer 120 to adjust the outgoing angle and direction of the outgoing light.
In the embodiment of the present application, the color film substrate 100 includes the substrate 110 and the multiple refraction layers 120 sequentially disposed on the substrate 110, and refractive indexes of two adjacent refraction layers 120 are different, refractive indexes of the refraction layers 120 close to the substrate 110 in the multiple refraction layers 120 are different from the refractive index of the substrate 110, and by disposing the refraction layers 120 with different refractive indexes, light rays emitted from different positions can reach the same observation point after being refracted by the multiple refraction layers 120, thereby improving color shift of different observation points, and improving a display effect of the color film substrate 100.
Optionally, the refractive indexes of the multiple refractive layers 120 are different, that is, the refractive indexes of each refractive layer 120 are different, so as to further adjust the emergent angle of the emergent light, so that one observation point can receive the emergent light rays at more positions, and further improve the color shift problem of the observation point.
Wherein, the setting law of each layer refraction layer 120's refracting index can carry out corresponding regulation according to the design demand, uses refraction layer 120 collocation that the refracting index size is different, and the light that makes different positions send reachs same observation point can.
Optionally, in the embodiment of the present disclosure, a plurality of protrusions 121 are juxtaposed on the surface of at least one refractive layer 120, and a first gap 122 is formed between adjacent protrusions 121. That is, after the refractive layer 120 is formed on the base substrate 110, the surface of the refractive layer 120 is processed by etching or the like, so that a plurality of protrusions 121 arranged in parallel are formed on the surface of the refractive layer 120. When the emergent ray enters the refraction layer 120, the emergent angle of the emergent ray is more various due to the different shapes of the protrusions 121, thereby being beneficial to adjusting the emergent angle of the emergent ray.
When the refraction layer 120 is continuously arranged on the refraction layer 120 with the protrusion 121 structure, the adjacent refraction layer 120 is filled in the first gaps 122 of the plurality of protrusions 121, so that the emergent ray can be refracted into the adjacent refraction layer 120 when passing through the protrusion 121 and entering the first gaps 122, and the emergent angle can be changed when the emergent ray enters the first gaps 122 because the refractive indexes of the adjacent refraction layers 120 are different. Through the mutual cooperation of the refractive index of the adjacent refraction layer 120 and the structure of the protrusion 121, the emergent angle of emergent light can be further adjusted, so that light rays emitted from different positions reach the same observation point.
Optionally, after the adjacent refractive layer 120 fills the first gap 122 between the protrusions 121, the surface of the refractive layer 120 can be continuously provided with the protrusions 121, that is, both sides of the refractive layer 120 can be formed with the protrusions 121, so as to enhance the adjustment of the emergent angle of the emergent light.
In some embodiments, the side of the refractive layer 120 away from the substrate 110 among the plurality of refractive layers 120 is formed with a protrusion 121 structure, and since the adjacent refractive layers 120 fill the first gap 122 between the protrusion 121 structures, the directions of arrangement of the protrusion 121 structures on the plurality of refractive layers 120 are alternately arranged, that is, the protrusion 121 structures are alternately arranged on the side of the refractive layer 120 away from the substrate 110 and the protrusion 121 structures are arranged on the side of the refractive layer 120 close to the substrate 110.
In other embodiments, the side of each refractive layer 120 away from the substrate 110 is provided with a protrusion 121 structure, and since the adjacent refractive layers 120 fill the first gap 122 between the protrusion 121 structures, the protrusion 121 structures are provided on both sides of the rest of the refractive layers 120 except the first and last refractive layers 120. The structural design enables the emergent ray to change the emergent angle for many times when passing through each refraction layer 120, thereby enlarging the change range of the emergent ray emergent angle.
Optionally, the cross-sectional area of the protrusion 121 gradually increases along a direction close to the substrate base plate 110, or the cross-sectional area of the protrusion 121 gradually decreases along a direction close to the substrate base plate 110, so that the emergent angle and the emergent direction when the emergent ray reaches different positions on the side surface of the structure of the protrusion 121 are different, and the range of the emergent ray emergent angle can be adjusted by adjusting the change trend of the cross-sectional area of the protrusion 121.
The structure of the protrusion 121 can be in a strip shape, a cone shape, and other regular or irregular shapes, and it is only necessary to ensure that the cross-sectional area of the protrusion 121 gradually increases or decreases along a direction close to the substrate base 110, that is, the side surface of the structure of the protrusion 121 and the surface of the substrate base 110 form an acute angle, and this is not limited herein.
It should be noted that, when the protrusion 121 on one of the refraction layers 120 is a regular triangular prism or a regular trapezoid, the cross section of the protrusion 121 on the adjacent refraction layer 120 filling the refraction layer 120 is an inverted triangular prism or an inverted trapezoid, so as to realize the mutual matching between the adjacent refraction layers 120, and simultaneously, facilitate the control of the emergent angle of the emergent light.
Optionally, in the embodiment of the present application, the refractive index of the multi-layer refraction layer 120 gradually increases along a direction away from the substrate 110, that is, the emergent light rays are angularly deflected toward the same direction when passing through the refraction layer 120 layer by layer, such an arrangement is favorable for estimating the emergent angle of the emergent light rays, so as to improve the controllability of the emergent angle of the emergent light rays, and facilitate performing targeted adjustment on the viewing angle of the color film substrate 100.
Similarly, the refractive index of the multi-layer refraction layer 120 can be gradually decreased along a direction away from the substrate 110, that is, the emergent light rays are angularly deflected towards another direction when passing through the refraction layer 120 layer by layer, so as to purposefully improve the color shift problem at a certain observation point and improve the display effect of the color film substrate 100.
It should be noted that, when designing the distribution manner of the refractive indexes of the multilayer refractive layers 120, the adjustment can be performed according to practical application requirements, for example, the refractive indexes of the multilayer refractive layers 120 gradually increase and then gradually decrease, or the refractive indexes of the multilayer refractive layers 120 gradually decrease and then gradually increase, or the refractive indexes of the multilayer refractive layers 120 are alternately set, and the like, which is not limited herein.
Optionally, in the embodiment of the present application, the thickness of the multi-layer refraction layer 120 gradually increases along a direction away from the substrate 110, that is, the optical path of the emergent light passing through each refraction layer 120 gradually increases to gradually slow down the change frequency of the emergent angle of the emergent light, and this structure design is convenient to first perform coarse adjustment and then perform fine adjustment on the emergent angle of the emergent light, so as to control the emergent angle.
Optionally, the thickness of the multi-layer refraction layer 120 is gradually reduced along the direction away from the substrate 110, that is, the optical path of the emergent ray passing through each refraction layer 120 is gradually reduced, so as to gradually increase the change frequency of the emergent ray angle, and this structural design facilitates to quickly realize the adjustment of the emergent angle after preliminarily determining the emergent direction of the emergent ray.
It should be noted that, when the distribution manner of the thicknesses of the multi-layer refraction layer 120 is designed, the adjustment can be performed according to the practical application requirement, for example, the thicknesses of the multi-layer refraction layer 120 gradually increase and then gradually decrease, or the thicknesses of the multi-layer refraction layer 120 gradually decrease and then gradually increase, or the thicknesses of the multi-layer refraction layer 120 are alternately arranged, and the like, which is not limited herein.
Optionally, the sum of the thicknesses of the multiple refractive layers 120 in the embodiment of the present application is greater than or equal to 10nm and less than or equal to 3000 nm. If the sum of the thicknesses of the multiple refractive layers 120 is too large, the optical path that the emergent light needs to travel when passing through the multiple refractive layers 120 is long, and the light loss of the emergent light in the multiple refractive layers 120 is too large, so that the light transmittance of the emergent light is small, and the display effect of the color film substrate 100 is finally affected; if the sum of the thicknesses of the multiple refractive layers 120 is too small, the change of the exit angle of the outgoing light by the multiple refractive layers 120 is small, and even the adjustment of the exit angle of the outgoing light cannot be performed.
In an actual manufacturing process, the thickness sum of the multilayer refraction layer 120 is set to be 10nm, 100nm, 500nm, 1000nm, 2000nm or 3000nm, and the specific design value can be adjusted as required, so that the multilayer refraction layer 120 is only required to adjust the emergent angle of the emergent ray, the excessive loss of the emergent ray in the multilayer refraction layer 120 is avoided, and the display effect of the color film substrate 100 is ensured.
Optionally, the material of the refraction layer 120 includes one or more of silicon oxide, silicon nitride and silicon oxynitride, and the adjustment of the refractive index of the refraction layer 120 can be realized by the mutual matching of the silicon oxide, the silicon nitride and the silicon oxynitride and the adjustment of the content of the silicon oxide, the silicon nitride and the silicon oxynitride, so as to meet the matching requirements of different refractive indexes.
The refraction layer 120 is a transparent film layer, and the transmission rate of the emergent ray is ensured while the emergent angle of the emergent ray is adjusted, so that the display effect of the color film substrate 100 is prevented from being affected. In addition, the refraction layer 120 can also serve as an insulating layer to facilitate fabrication of subsequent layers.
Optionally, the color filter substrate 100 in this embodiment further includes a plurality of wire grids 130, and the plurality of wire grids 130 are arranged in parallel on the substrate 110. The plurality of wire grids 130 can function as a polarizer, that is, have a function of shielding and transmitting incident light, and allow one of longitudinal light and transverse light to transmit, so as to screen emergent light and ensure the display effect of the color filter substrate 100.
In addition, the plurality of wire grids 130 also have a light reflecting function, when a light ray entering the multi-layer refraction layer 120 is reflected to the wire grids 130, the wire grids 130 can reflect the light ray to the multi-layer refraction layer 120 again, so as to increase the light emitting amount of the emitted light ray and improve the display brightness of the color filter substrate 100.
Optionally, a second gap 131 is formed between two adjacent wire grids 130, that is, the plurality of wire grids 130 are spaced apart, so that the emergent light can be emitted through the second gap 131 between the adjacent wire grids 130 when passing through the plurality of wire grids 130. By adjusting the line width of the wire grid 130 and the width of the second gap 131, the intensity of the emergent light in different areas of the color film substrate 100 can be adjusted, so as to realize the display diversity of the display panel 10.
In some embodiments, the widths of the second gaps 131 between adjacent wire grids 130 are equal, that is, the plurality of wire grids 130 are uniformly distributed, such a structural design enables the light-emitting probabilities of the light emitted from each region of the color filter substrate 100 to be the same, which is beneficial to improving the uniformity of the display brightness of the color filter substrate 100.
In other embodiments, the width of the second gap 131 between the wire grid 130 of each region is different, i.e., the light extraction intensity of each region is different. For example, the width of the second gap 131 may gradually increase from the two side edges to the middle area, and the light intensity of the color filter substrate 100 from the two side edges to the middle area is gradually increased due to the structural design, that is, the display brightness is increased at the position of the color filter substrate 100 closer to the middle area.
Or, the widths of the second gaps 131 are alternately arranged, and the structural design enables the light-emitting intensity on the color film substrate 100 to be alternately distributed, but the area with stronger light-emitting intensity can perform brightness compensation on the adjacent area with weaker light-emitting intensity, so that the overall display brightness of the color film substrate 100 is still uniform.
It should be noted that, in addition to the regular distribution, the widths of the second gaps 131 may be irregularly distributed as required, that is, when a certain region of the color filter substrate 100 needs a higher light emitting intensity, the entire width of the second gap 131 in the region is increased to increase the light emitting amount in the region; when a certain region of the color filter substrate 100 has a lower requirement for light output intensity, the entire width of the second gap 131 in the region is reduced to reduce the light output amount in the region. The specific distribution of the wire grid 130 can be adjusted according to the actual application requirement, and is not limited herein.
Alternatively, the extending direction of the protrusions 121 on the refractive layer 120 is the same as the extending direction of the wire grid 130, and the distribution direction of the plurality of protrusions 121 is the same as the distribution direction of the plurality of wire grids 130, that is, the first gaps 122 between the plurality of protrusions 121 are the same as the distribution direction of the second gaps 131 between the plurality of wire grids 130. This structure design makes the first refractive layer 120 through which light emitted from the same second gap 131 passes have the same structure, thereby facilitating control of the adjustment of the light emitting angle from the second gap 131.
In some embodiments, the distribution direction of the plurality of protrusions 121 on the refractive layer 120 is at an angle with the distribution direction of the plurality of wire grids 130, that is, the extending direction of the protrusions 121 is at an angle with the extending direction of the wire grids 130, that is, a wire grid 130 crosses over the area where the plurality of protrusions 121 are located, and light emitted from one second gap 131 can be emitted into different protrusions 121 of the refractive layer 120 at the same time. Through protruding 121's cooperation design, can carry out the multi-angle to the exit angle of emergent ray and adjust, improve the variety of angle modulation.
Wherein, the distribution direction of a plurality of archs 121 and the distribution direction of many wire grids 130 can be perpendicular, and the contained angle is 90, also can be other angle settings, only need guarantee that an observation point can receive the emergent ray of different positions can, do not do special restriction here.
Alternatively, the first gaps 122 between the plurality of protrusions 121 and the second gaps 131 between the plurality of wire grids 130 are disposed to be shifted in the thickness direction of the base substrate 110. Because the adjacent refraction layers 120 are filled in the first gaps 122 between the protrusions 121, the structure design enables the emergent light to reach the contact surfaces of the protrusions 121 of the adjacent two refraction layers 120 when the emergent light is emitted from the second gaps 131, so that twice refraction is realized, and the adjustment of the emergent angle and the emergent direction of the emergent light is facilitated.
When the first gaps 122 between the plurality of protrusions 121 and the second gaps 131 between the plurality of wire grids 130 are correspondingly disposed in the thickness direction of the substrate 110, the light emitted from the second gaps 131 directly enters the protrusion 121 structure of another refractive layer 120 through the first gaps 122, and compared with the staggered arrangement of the first gaps 122 and the second gaps 131, the number of refraction times of the emergent light in the structural design is reduced to a certain extent, but the emergent angle of the emergent light is more conveniently controlled.
Optionally, the substrate 110 includes a first side surface and a second side surface opposite to each other, the plurality of wire grids 130 are disposed on the first side surface, the multi-layer refraction layer 120 is sequentially disposed on the wire grids 130, that is, the plurality of wire grids 130 and the multi-layer refraction layer 120 are sequentially distributed along a direction away from the first side surface of the substrate 110, and the wire grids 130 are located at the lowest portion of the multi-layer refraction layer 120, so that when the emergent light entering the refraction layer 120 is reflected onto the wire grids 130, the emergent light can be reflected again into the refraction layer 120, and the light output amount of the color filter substrate 100 is improved.
The plurality of wire grids 130 may also be located between two adjacent refraction layers 120, so that when the emergent light passes through the wire grids 130, the reflected emergent light can enter the refraction layer 120 of the wire grid 130 on the side close to the substrate 110 again, and the emergent light is refracted by the refraction layer 120 for multiple times and then emitted again, which can also improve the light output amount of the color filter substrate 100.
Optionally, the color filter substrate 100 further includes a color resistance layer 140, the color resistance layer 140 is disposed on the second side surface, the color resistance layer 140 includes a plurality of color resistances, and the colors of the plurality of color resistances include one or more of red, green, blue, and white, and are used for filtering the emergent light. Through the mutual matching of the color resistances with different colors, the display requirements of different display pictures can be met.
In some embodiments, the partial refraction layer 120 is located on the second side of the substrate base plate 110, that is, the emergent light is filtered by the color resistance layer 140, then refracted in the partial refraction layer 120, and then passes through the substrate base plate 110 to enter the partial refraction layer 120 located on the first side for refraction, so as to adjust the emergent direction and angle of the emergent light.
In other embodiments, the refraction layer 120 is entirely located on the second side of the substrate 110, that is, the emergent light is filtered by the color resistance layer 140 and then directly enters the refraction layer 120 to realize the adjustment of the emergent angle and direction of the emergent light, and then is subjected to polarization detection by the wire grid 130 on the first side of the substrate 110, and finally the emergent color filter substrate 100 is received by human eyes.
Wherein the wire grid 130 can be disposed on a first side of the substrate base 110 and can also be disposed on a second side of the substrate base 110; meanwhile, the wire grid 130 may be directly disposed on the substrate base plate 110, or disposed between two adjacent refraction layers 120, and the specific disposition thereof can be adjusted according to design requirements, and is not limited herein.
In addition, an embodiment of the present application provides a display panel, where the display panel includes a color film substrate, and a specific structure of the color film substrate refers to the foregoing embodiments.
Fig. 2 is a schematic structural diagram of a display panel 10 according to an embodiment of the present disclosure, and as shown in fig. 2, the display panel 10 includes a color film substrate 100, an array substrate 200, and a liquid crystal layer 300. The array substrate 200 is located on a second side of the substrate 110 in the color filter substrate 100, that is, the array substrate 200 is located on a side of the color filter substrate 100 where the color resist layer 140 is located.
During assembly, the array substrate 200 and the color film substrate 100 are fastened to form an accommodating cavity, the liquid crystal layer 300 is filled in the accommodating cavity between the color film substrate 100 and the array substrate 200, and liquid crystal molecules in the liquid crystal layer 300 are controlled to rotate through driving voltage regulation and control so as to form emergent rays with different emergent angles and different emergent directions.
Optionally, in order to ensure that the liquid crystal layer 300 has an enough accommodation space and the color film substrate 100 and the array substrate 200 are relatively stable, and to avoid unevenness or uneven height of the surface of the display panel 10, a spacer 400 needs to be disposed between the color film substrate 100 and the array substrate 200 to support the color film substrate 100 and the array substrate 200, so as to ensure flatness of the surface of the display panel 10.
Finally, an embodiment of the present application further provides a manufacturing method of the color filter substrate 100, as shown in fig. 3, the manufacturing method of the color filter substrate 100 mainly includes the following steps:
s100, a substrate 110 is provided. The substrate 110 may be a glass substrate or other type of substrate, and is used to support each film structure in the color film substrate 100, and the specific material thereof may be adjusted according to the actual design requirement, which is not limited herein.
It should be noted that, since the entire color filter substrate 100 is located on the light exit side, in order to ensure the light exit rate of the color filter substrate 100, the used substrate 110 needs to have better light transmittance, so as to avoid a large amount of loss of light when passing through the substrate 110, thereby improving the light exit rate effect of the color filter substrate 100.
S200, forming a plurality of wire grids 130 on the base substrate 110, wherein the plurality of wire grids 130 are arranged in parallel.
Specifically, as shown in fig. 4, a metal layer is deposited on the substrate 110, and then the metal layer is etched to form a plurality of wire grids 130 arranged in parallel. The second gap 131 is formed between two adjacent wire grids 130, and the position and size of the second gap 131 can be adjusted correspondingly by adjusting the etching process, so as to meet different light emitting requirements.
S300, sequentially forming a plurality of refraction layers 120 on the substrate base 110, wherein the refractive indexes of two adjacent refraction layers 120 are different, and the refractive index of the refraction layer 120 close to the substrate base 110 in the plurality of refraction layers 120 is different from the refractive index of the substrate base 110.
As shown in fig. 5, in the manufacturing process, a plurality of refraction layers 120 are sequentially deposited on the substrate base plate 110 by physical or chemical deposition, refractive indexes of two adjacent refraction layers 120 are different, and refractive indexes of the refraction layers 120 close to the substrate base plate 110 in the plurality of refraction layers 120 are different from that of the substrate base plate 110, so that the emergent angle of the emergent ray can be changed when the emergent ray passes through each refraction layer 120, and the emergent rays at different positions are converged to the same observation point by matching design of the refractive indexes of the plurality of refraction layers 120, so as to improve the color shift problem of different observation points, and improve the display effect of the color film substrate 100.
Optionally, in the process of forming the refractive layer 120 layer by layer, the surface of at least one of the refractive layers 120 is etched, so that a plurality of protrusions 121 are formed on the surface of the refractive layer 120. Through the design of etching process, can adjust the shape of arch 121 for the exit angle of emergent ray is more various, thereby is favorable to the regulation to the exit angle of emergent ray.
After the plurality of protrusions 121 are formed on one of the surfaces of one of the layers, the subsequent adjacent refractive layer 120 is filled in the first gaps 122 of the plurality of protrusions 121, that is, the protrusions 121 complementary to the refractive layer 120 are formed on one side of the subsequent adjacent refractive layer 120 close to the plurality of protrusions 121, so that the adjustment of the emergent angle and the emergent direction of the emergent light is more diversified.
It should be noted that the protrusion 121 may be formed on one side surface of any one or more of the refraction layers 120 or on both side surfaces of the refraction layer 120, and the specific forming position thereof can be designed and adjusted according to the actual application requirement, and is not limited herein.
Optionally, in the manufacturing process of the color filter substrate 100, after the wire grid 130 and the refraction layer 120 are manufactured, the color resist layer 140 needs to be formed on the substrate 110, so as to complete the manufacturing of the color filter substrate 100. The color resistance layer 140 includes a plurality of color resistances, and the colors of the plurality of color resistances include one or more of red, green, blue and white, and are used for filtering the emergent light. Through the mutual matching of the color resistances with different colors, the display requirements of different display pictures can be met.
In some embodiments, the plurality of wire grids 130 and the multi-layer refractive layer 120 are located on the same side of the substrate base 110, the plurality of wire grids 130 are located on one side of the multi-layer refractive layer 120 close to the substrate base 110, and the color barrier layer 140 is located on the other side of the substrate base 110. That is, the wire grid 130 is formed on the base substrate 110 by performing the step S200, and then the multi-layered refractive layer 120 is sequentially formed on the wire grid 130 by performing the step S300.
In other embodiments, the multi-layer refraction layer 120 and the color-resisting layer 140 are located on the same side of the substrate 110, and the plurality of wire grids 130 are located on the other side of the substrate 110, the sequence of steps S200 and S300 can be adjusted according to the manufacturing process. Alternatively, the plurality of refraction layers 120 are distributed on two opposite sides of the substrate 110, and the manufacturing process of step S200 and then step S300 is performed to simplify the process flow.
It should be noted that, in the process of manufacturing the color filter substrate 100, the sequence of steps S200 and S300 can be adjusted according to the arrangement positions of the wire grid 130 and the refraction layer 120, that is, steps S200 and S300 only show the process of manufacturing the wire grid 130 and the refraction layer 120, respectively, and do not represent the order of manufacturing the wire grid 130 and the refraction layer 120, and the manufacturing order of the color filter substrate 100 is also adjusted accordingly as the structure of the color filter substrate is changed.
The color filter substrate, the display panel and the method for manufacturing the color filter substrate provided by the embodiments of the present application are introduced in detail above, and a specific example is applied in the present application to explain the principle and the implementation of the present application, and the description of the above embodiments is only used to help understanding the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (14)
1. A color film substrate is characterized by comprising:
a substrate base plate;
the substrate comprises a substrate base plate, a plurality of refraction layers and a plurality of reflection layers, wherein the substrate base plate is provided with a plurality of refraction layers; the refractive index of the refraction layer close to the substrate base plate in the plurality of refraction layers is different from that of the substrate base plate.
2. The color filter substrate of claim 1, wherein the refractive layers have different refractive indices.
3. The color filter substrate according to claim 1, wherein a plurality of protrusions are arranged on the surface of at least one of the refraction layers in parallel, and a first gap is formed between every two adjacent protrusions.
4. The color film substrate according to claim 3, wherein the cross-sectional area of the protrusion gradually increases along a direction close to the substrate; or the like, or, alternatively,
the cross-sectional area of the protrusion gradually decreases in a direction approaching the substrate base plate.
5. The color film substrate according to any one of claims 1 to 4, wherein the refractive index of the plurality of refractive layers gradually increases in a direction away from the substrate; or the like, or, alternatively,
the refractive index of the plurality of refraction layers is gradually reduced along the direction far away from the substrate base plate.
6. The color film substrate according to any one of claims 1 to 4, wherein the thicknesses of the plurality of refraction layers gradually increase along a direction away from the substrate; or the like, or, alternatively,
the thickness of the plurality of refraction layers is gradually reduced along the direction far away from the substrate base plate.
7. The color filter substrate according to any one of claims 1 to 4, wherein the sum of the thicknesses of the plurality of refraction layers is greater than or equal to 10nm and less than or equal to 3000 nm.
8. The color filter substrate according to any one of claims 1 to 4, wherein the material of the refraction layer comprises one or more of silicon oxide, silicon nitride and silicon oxynitride.
9. The color filter substrate according to claim 3, wherein the color filter substrate comprises a plurality of wire grids, the plurality of wire grids are arranged on the substrate in parallel, and a second gap is formed between every two adjacent wire grids.
10. The color filter substrate according to claim 9, wherein an extending direction of the protrusions is the same as an extending direction of the wire grid; the distribution direction of the plurality of projections is the same as the distribution direction of the plurality of wire grids.
11. The color filter substrate according to claim 10, wherein the first gap and the second gap are arranged in a staggered manner in a thickness direction of the substrate base.
12. The color filter substrate according to claim 9, wherein the substrate has a first side surface and a second side surface which are opposite to each other, the plurality of wire grids are arranged in parallel on the first side surface, and the plurality of refraction layers are sequentially arranged on the wire grids; the color film substrate further comprises a color resistance layer, and the color resistance layer is arranged on the second side face.
13. A display panel, comprising:
a colour film substrate as claimed in any one of claims 1 to 12;
the array substrate is positioned on the second side face of the substrate in the color film substrate; and
and the liquid crystal layer is filled between the color film substrate and the array substrate.
14. A manufacturing method of a color film substrate is characterized by comprising the following steps:
providing a substrate base plate;
forming a plurality of wire grids on the substrate, wherein the wire grids are arranged in parallel;
the substrate base plate is sequentially provided with a plurality of layers of refraction layers, the refraction layers are adjacent to each other, the refraction index of the refraction layers is different, and the refraction index of the refraction layer close to the substrate base plate in the plurality of layers of refraction layers is different from that of the substrate base plate.
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