CN112327536B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN112327536B CN112327536B CN202011207051.3A CN202011207051A CN112327536B CN 112327536 B CN112327536 B CN 112327536B CN 202011207051 A CN202011207051 A CN 202011207051A CN 112327536 B CN112327536 B CN 112327536B
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- light leakage
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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
- G02F1/133504—Diffusing, scattering, diffracting elements
Abstract
The application discloses a display panel and a display device. The display panel comprises a substrate, a plurality of metal wires positioned on the substrate and a light leakage prevention unit positioned on the side surface of any one of the metal wires; the light leakage preventing unit is used for reducing light leakage of first type light rays of the display panel, wherein the first type light rays are light rays which are not perpendicular to the substrate in the direction from the substrate to the metal wire. According to the application, the light leakage prevention unit is arranged on the side surface of the metal wire, so that the roughness of the side surface of the metal wire is increased, light leakage which is not perpendicular to the substrate in the direction from the substrate to the metal wire is diffusely reflected, light diffraction and polarization direction change which are caused by the metal wire are reduced, light leakage which cannot be absorbed by the upper polarizing plate is reduced, the display contrast of the display panel is improved, and the user visual experience is improved.
Description
Technical Field
The application relates to the field of display, in particular to the technical field of display, and specifically relates to a display panel and a display device.
Background
With the improvement of living standard, the LCD (Liquid Crystal Display ) display screen is still active in the market of display fields due to its fast response and lower cost.
In the prior art, the problem of light leakage commonly exists in an LCD screen, and light leakage of an actual product often occurs at the intersection of metal wires, because incident light is linearly polarized light, and the intersection is often not a right angle; according to Malus's law, the edge of a metal wire forming a certain angle with polarized light will generate light diffraction, the diffracted light is reflected by the side slope of the metal wire, and the reflected light is not perpendicular to the absorption axis direction of the upper polarizing plate, so that light leakage of the display panel is caused.
Therefore, a display panel and a display device are needed to solve the above-mentioned problems.
Disclosure of Invention
The application provides a display panel and a display device, which are used for solving the technical problem that in the prior art, reflected light is not perpendicular to the absorption axis direction of an upper polarizing plate at the intersection of metal wires of an LCD screen, so that the light leakage of the display panel is caused.
In order to solve the problems, the technical scheme provided by the application is as follows:
a display panel comprises a substrate, a plurality of metal wires positioned on the substrate, and a light leakage prevention unit positioned on the side surface of any metal wire;
the light leakage preventing unit is used for reducing light leakage of first type light rays of the display panel, wherein the first type light rays are light rays which are not perpendicular to the substrate in the direction from the substrate to the metal lines.
In the display panel of the present application, the light leakage preventing unit includes copper chloride and/or copper bromide.
In the display panel of the present application, the copper oxide and/or the copper bromide content gradually increases in a direction away from the center of the metal line.
In the display panel of the application, an included angle between the side surface of the light leakage prevention unit and the substrate is greater than or equal to 90 degrees at a side far away from the metal line.
In the display panel of the application, the light leakage prevention unit is lapped on the side surface of the metal wire;
the gradient of the light leakage prevention unit and the substrate is smaller than that of the metal wire and the substrate.
In the display panel of the application, the light leakage prevention unit comprises a first slope body and a second slope body, wherein the first slope body is lapped on the side surface of the metal wire;
the gradient of the second slope body is smaller than that of the first slope body.
In the display panel of the present application, the gradient between the light leakage preventing unit and the substrate is 40 ° to 60 °.
In the display panel of the application, the light leakage prevention unit is entirely arranged on the side surface of the metal wire, and the light leakage prevention unit is made of light absorption material.
In the display panel of the present application, the side surface of the metal line includes a plurality of first recesses, and the light leakage preventing unit is integrally provided with the first recesses.
The application also provides a display device which comprises the display panel, an encapsulation layer positioned on the display panel and a cover plate layer positioned on the encapsulation layer.
The beneficial effects are that: according to the application, the light leakage prevention unit is arranged on the side surface of the metal wire, so that the roughness of the side surface of the metal wire is increased, light leakage which is not perpendicular to the substrate in the direction from the substrate to the metal wire is diffusely reflected, light diffraction and polarization direction change which are caused by the metal wire are reduced, light leakage which cannot be absorbed by the upper polarizing plate is reduced, the display contrast of the display panel is improved, and the user visual experience is improved.
Drawings
The technical solution and other advantageous effects of the present application will be made apparent by the following detailed description of the specific embodiments of the present application with reference to the accompanying drawings.
FIG. 1 is a schematic view of a first structure of a display panel according to the present application;
FIG. 2 is a schematic diagram of a second structure of the display panel of the present application;
FIG. 3 is a schematic view of a third structure of the display panel of the present application;
FIG. 4 is a schematic diagram of a fourth structure of the display panel of the present application;
FIG. 5 is a schematic diagram of a fifth structure of the display panel of the present application;
FIG. 6 is a graph showing the comparison of the effects of materials on a display panel according to the present application;
FIG. 7 is a flowchart illustrating steps of a method for fabricating a display panel according to the present application;
FIG. 8 is a schematic diagram of a manufacturing process of a display panel according to the present application;
fig. 9 is a schematic structural diagram of a display device according to the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The following disclosure provides many different embodiments, or examples, for implementing different features of the application. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.
In the prior art, the problem of light leakage commonly exists in an LCD screen, and light leakage of an actual product often occurs at the intersection of metal wires, because incident light is linearly polarized light, and the intersection is often not a right angle; according to Malus's law, the edge of a metal wire forming a certain angle with polarized light will generate light diffraction, the diffracted light is reflected by the side slope of the metal wire, and the reflected light is not perpendicular to the absorption axis direction of the upper polarizing plate, so that light leakage of the display panel is caused.
Referring to fig. 1 to 6, the present application provides a display panel 100, which includes a substrate 200, a plurality of metal lines 300 disposed on the substrate 200, and a light leakage preventing unit 400 disposed on a side surface of any one of the metal lines 300;
the light leakage preventing unit 400 is configured to reduce light leakage of a first type of light of the display panel 100, where the first type of light is a light not perpendicular to the substrate 200 in a direction from the substrate 200 to the metal line 300.
According to the application, the light leakage prevention unit is arranged on the side surface of the metal wire, so that the roughness of the side surface of the metal wire is increased, light leakage which is not perpendicular to the substrate in the direction from the substrate to the metal wire is diffusely reflected, light diffraction and polarization direction change which are caused by the metal wire are reduced, light leakage which cannot be absorbed by the upper polarizing plate is reduced, the display contrast of the display panel is improved, and the user visual experience is improved.
The technical scheme of the present application will now be described with reference to specific embodiments.
Referring to fig. 1 to 6, the display panel 100 includes a substrate 200, a plurality of metal lines 300 disposed on the substrate 200, and a light leakage preventing unit 400 disposed on a side surface of any one of the metal lines 300. The light leakage preventing unit 400 is configured to reduce light leakage of a first type of light of the display panel 100, where the first type of light is a light not perpendicular to the substrate 200 in a direction from the substrate 200 to the metal line 300.
In this embodiment, the metal line 300 is a single metal wire of Al or Cu. Or the metal line 300 further includes any one of the bimetal laminated structures AlMo, moCu, tiCu. Or the metal wire 300 further includes a three-layer structure of moolmo or MoCuMo.
In this embodiment, the plurality of metal lines 300 are the data lines and the scan lines which are staggered in the horizontal direction and the vertical direction.
In this embodiment, the light leakage preventing unit 400 includes a first substance, which is any one or more of copper chloride, copper bromide, cuprous iodide, and copper sulfide, and refer to fig. 1. The light leakage preventing unit 400 includes a first substance on a side far from the metal wire 300, the first substance has a larger roughness, and the Bechmann reflection distribution model has a relationship between the metal surface roughness and the optical reflection: r=r 0 exp (- (4πδcos θ))/λ, where R 0 For smooth surface emissivity, δ is roughness, the larger the roughness, the smaller the reflection R, and by way of example, copper chloride is compared with copper oxide, the copper chloride is obviously seen to have a rough surface at the same magnification, and the copper oxide surface is smoother, specifically referring to fig. 6, where (a) in fig. 6 is the copper chloride surface, and (b) in fig. 6 is the copper oxide surface. The measured roughness of copper chloride is 870nm, and the measured roughness of copper oxide is 60nm. Copper oxide forms tetragonal system, oxygen is simply stacked in cubes, copper is filled in square gaps at the sides of the cubes, ionic compounds are formed, and roughness is small. The X-ray diffraction structure research of copper chloride shows that copper chloride is in a chain structure, and each chain is mutually closed, so that each copper atom has more two chlorine atoms at a distance, and the copper chloride has obvious structural characteristics of covalent compounds, which indicates that the copper chloride is a covalent compound, and meanwhileBecause of its planar crystal structure, a greater roughness can be formed compared to copper oxide. Copper chloride has more diffuse reflection than copper oxide, other first material properties are similar to copper chloride, and light leakage can be better diffusely reflected, so that the intensity of light leakage emitted out of the display panel 100 is reduced, the light leakage amount is reduced by 90%, the display contrast of the display panel 100 is improved, and the user visual experience is improved.
In this embodiment, the light leakage preventing unit 400 is disposed in a first area, which is an area near where the two metal wires 300 intersect. The light leakage emitted from the substrate 200 is mainly concentrated in the area where the two metal lines 300 intersect, and the light leakage prevention unit 400 is concentrated in the first area, so that the light leakage can be better reduced, and the display contrast of the display panel 100 can be improved.
In this embodiment, the width of the light leakage preventing unit 400 including the first substance is 0.2um to 0.3um, the line width of the metal line 300 is 3um to 5um, and the mass of the first substance is 5% to 7% of the mass of the metal line 300. The first substance is exemplified by copper chloride, and the roughness can reach 650 nm-870 nm. The roughness is great, can diffuse reflection light leak better, reduces the intensity that light leak penetrated out of display panel 100, has improved display contrast of display panel 100, has improved user's visual experience.
In this embodiment, the content of the first substance gradually increases in a direction away from the center of the metal line 300. The first substance is concentrated on the side surface of the metal line 300, and the light leakage can be efficiently diffusely reflected without affecting the conductive performance of the metal line 300.
In this embodiment, an included angle between the side surface of the light leakage preventing unit 400 and the substrate 200 is greater than or equal to 90 ° at a side far from the metal line 300, refer to fig. 2. When the included angle between the side surface of the light leakage preventing unit 400 and the substrate 200 is equal to 90 °, the light leakage is less reflected out of the display panel 100, and less light leakage is observed by human eyes. The light leakage preventing unit 400 is overlapped on the side of the metal wire 300. When the included angle between the side surface of the light leakage preventing unit 400 and the substrate 200 is greater than 90 °, the light leakage is reflected to the light emitting unit, and the probability of the light leakage exiting the display panel 100 is reduced. The material of the light leakage preventing unit 400 overlapped on the side of the metal wire 300 is molybdenum or molybdenum copper alloy, which can improve the conductive performance and corrosion resistance of the metal wire 300, and form a protective film.
In this embodiment, the light leakage preventing unit 400 is overlapped on the side surface of the metal wire 300. The gradient of the light leakage preventing unit 400 and the substrate 200 is smaller than the gradient of the metal wire 300 and the substrate 200, refer to fig. 3. The slope of the metal wire 300 is not suitable to be slowed down, and the leakage light emission can be significantly reduced by arranging the light leakage prevention unit 400 with a slower slope.
In this embodiment, the gradient of the light leakage preventing unit 400 and the substrate 200 is 40 ° to 60 °. The light leakage amount of the light leakage prevention unit 400 is reduced by about 40% from 60-degree slope to 40-degree slope, and the light leakage problem is greatly improved.
In this embodiment, the light leakage preventing unit 400 includes a first slope 410 and a second slope 420, and the first slope 410 is lapped on the side surface of the metal wire 300. The second slope 420 has a gradient smaller than that of the first slope 410, refer to fig. 4. The first film layer and the second film layer are made of molybdenum or molybdenum-copper alloy, so that the conductivity and corrosion resistance of the metal wire 300 can be improved, and a protective film is formed. Through the continuous gentle slope of second grade, can reduce the slope rapidly, can make longer gentle slope overlap joint in the side of wire 300, the light leak volume reduces more, and the light leak problem improves better.
In this embodiment, the light leakage preventing unit 400 is disposed on the entire surface of the side surface of the metal wire 300. The light leakage preventing unit 400 is made of a light absorbing material. By providing the light leakage preventing unit 400 including a light absorbing material, diffracted light leakage is absorbed, and light leakage is reduced from exiting the display panel 100. The light absorbing material comprises black oil and a black matrix.
In this embodiment, the side surface of the metal wire 300 includes a plurality of first recesses 430, and the light leakage preventing unit 400 is integrally disposed with the first recesses 430, as shown in fig. 5. The side surface of any one of the metal lines 300 includes a plurality of first recesses 430, and diffuse reflection is directly formed on the light leakage preventing unit 400 by the light leakage preventing unit 400 including the plurality of first recesses 430, and the first recesses 430 may be formed by bombardment with an inert gas or plasma inert gas treatment including the inert gas during the manufacturing process, thereby enhancing the diffuse reflection effect.
In this embodiment, when the light-leakage preventing unit 400 is a slope, the surface of the light-leakage preventing unit 400 includes a plurality of second recesses. The second recesses have the same effect as the first recesses 430 on the side surface of the metal wire 300, and may be formed on a slope body while being formed by bombardment with an inert gas or plasma inert gas treatment including the inert gas during the fabrication. Better diffuse reflection, reduced light leakage out of the display panel 100 intensity, improved display contrast of the display panel 100, and improved user visual experience.
According to the application, the light leakage prevention unit is arranged on the side surface of the metal wire, so that the roughness of the side surface of the metal wire is increased, light leakage which is not perpendicular to the substrate in the direction from the substrate to the metal wire is diffusely reflected, light diffraction and polarization direction change which are caused by the metal wire are reduced, light leakage which cannot be absorbed by the upper polarizing plate is reduced, the display contrast of the display panel is improved, and the user visual experience is improved.
Referring to fig. 1 to 8, the present application provides a method for manufacturing a display panel 100, which includes:
s100, a plurality of metal lines 300 are formed on the substrate 200.
And S200, forming a light leakage preventing unit 400 on the side surface of any metal wire 300.
The light leakage preventing unit 400 is configured to reduce light leakage of a first type of light of the display panel 100, where the first type of light is a light not perpendicular to the substrate 200 in a direction from the substrate 200 to the metal line 300.
According to the application, the light leakage prevention unit is arranged on the side surface of the metal wire, so that the roughness of the side surface of the metal wire is increased, light leakage which is not perpendicular to the substrate in the direction from the substrate to the metal wire is diffusely reflected, light diffraction and polarization direction change which are caused by the metal wire are reduced, light leakage which cannot be absorbed by the upper polarizing plate is reduced, the display contrast of the display panel is improved, and the user visual experience is improved.
The technical scheme of the present application will now be described with reference to specific embodiments.
Referring to fig. 1 to 8, the method for manufacturing the display panel 100 includes:
s100, a plurality of metal lines 300 are formed on the substrate 200.
In this embodiment, the metal line 300 is a single metal wire of Al or Cu. Or the metal line 300 further includes any one of the bimetal laminated structures AlMo, moCu, tiCu. Or the metal wire 300 further includes a three-layer structure of moolmo or MoCuMo.
In this embodiment, step S100 includes:
s110, a metal material layer is formed on the substrate 200.
And S120, forming a patterned first photoresist layer 500 on the metal material layer, and performing patterning treatment on the metal material layer to form a plurality of metal lines 300.
In this embodiment, the plurality of metal lines 300 are the data lines and the scan lines which are staggered in the horizontal direction and the vertical direction.
In this embodiment, the first photoresist layer 500 may protect the top of the metal line 300 from being corroded by the subsequent process, and referring to fig. 8, the performance is not affected.
And S200, forming a light leakage preventing unit 400 on the side surface of any metal wire 300.
In this embodiment, step S200 includes:
and S210, treating the side surface of any metal wire 300 by plasma gas to form the light leakage preventing unit 400.
In this embodiment, the light leakage preventing unit 400 includes a first substance, which is any one or more of copper chloride, copper bromide, cuprous iodide, and copper sulfide, and refer to fig. 1. The plasma gas comprises any one or more of chlorine gas, bromine vapor, iodine vapor and sulfur vaporIs a combination of (a) and (b). The light leakage preventing unit 400 includes a first substance on a side far from the metal wire 300, the first substance has a larger roughness, and the Bechmann reflection distribution model has a relationship between the metal surface roughness and the optical reflection: r=r 0 exp (- (4πδcos θ))/λ, where R 0 For smooth surface emissivity, δ is roughness, the larger the roughness, the smaller the reflection R, and by way of example, copper chloride is compared with copper oxide, the copper chloride is obviously seen to have a rough surface at the same magnification, and the copper oxide surface is smoother, specifically referring to fig. 6, where (a) in fig. 6 is the copper chloride surface, and (b) in fig. 6 is the copper oxide surface. The measured roughness of copper chloride is 870nm, and the measured roughness of copper oxide is 60nm. Copper oxide forms tetragonal system, oxygen is simply stacked in cubes, copper is filled in square gaps at the sides of the cubes, ionic compounds are formed, and roughness is small. The X-ray diffraction structure research of the copper chloride shows that the copper chloride is in a chain structure, and each chain is mutually close, so that each copper atom is further provided with two chlorine atoms at a distance, the structure characteristics of an obvious covalent compound are provided, the copper chloride is the covalent compound, and meanwhile, the copper chloride can form larger roughness compared with copper oxide due to the planar crystal structure. Copper chloride has more diffuse reflection than copper oxide, other first material properties are similar to copper chloride, and light leakage can be better diffusely reflected, so that the intensity of light leakage emitted out of the display panel 100 is reduced, the light leakage amount is reduced by 90%, the display contrast of the display panel 100 is improved, and the user visual experience is improved.
In this embodiment, the light leakage preventing unit 400 is disposed in a first area, which is an area near where the two metal wires 300 intersect. The light leakage emitted from the substrate 200 is mainly concentrated in the area where the two metal lines 300 intersect, and the light leakage prevention unit 400 is concentrated in the first area, so that the light leakage can be better reduced, and the display contrast of the display panel 100 can be improved.
In this embodiment, the width of the light leakage preventing unit 400 including the first substance is 0.2um to 0.3um, the line width of the metal line 300 is 3um to 5um, and the mass of the first substance is 5% to 7% of the mass of the metal line 300. The first substance is exemplified by copper chloride, and the roughness can reach 650 nm-870 nm. The roughness is great, can diffuse reflection light leak better, reduces the intensity that light leak penetrated out of display panel 100, has improved display contrast of display panel 100, has improved user's visual experience.
In this embodiment, the content of the first substance gradually increases in a direction away from the center of the metal line 300. The first substance is concentrated on the side surface of the metal line 300, and the light leakage can be efficiently diffusely reflected without affecting the conductive performance of the metal line 300.
In this embodiment, step S200 includes:
s210, forming a first film layer on the side surface of the metal wire 300, and performing patterning treatment to form a light leakage preventing unit 400 which is lapped on the side surface of the metal wire 300.
In this embodiment, an included angle between the side surface of the light leakage preventing unit 400 and the substrate 200 is greater than or equal to 90 ° at a side far from the metal line 300, refer to fig. 2. When the included angle between the side surface of the light leakage preventing unit 400 and the substrate 200 is equal to 90 °, the light leakage is less reflected out of the display panel 100, and less light leakage is observed by human eyes. The light leakage preventing unit 400 is overlapped on the side of the metal wire 300. When the included angle between the side surface of the light leakage preventing unit 400 and the substrate 200 is greater than 90 °, the light leakage is reflected to the light emitting unit, and the probability of the light leakage exiting the display panel 100 is reduced. The material of the light leakage preventing unit 400 overlapped on the side surface of the metal wire 300 is molybdenum or molybdenum-copper alloy, that is, the material of the first film layer is molybdenum or molybdenum-copper alloy, so that the conductivity and corrosion resistance of the metal wire 300 can be improved, and a protective film can be formed.
In this embodiment, the light leakage preventing unit 400 is overlapped on the side surface of the metal wire 300. The gradient of the light leakage preventing unit 400 and the substrate 200 is smaller than the gradient of the metal wire 300 and the substrate 200, refer to fig. 3. The slope of the metal wire 300 is not suitable to be slowed down, and the leakage light emission can be significantly reduced by arranging the light leakage prevention unit 400 with a slower slope.
In this embodiment, the gradient of the light leakage preventing unit 400 and the substrate 200 is 40 ° to 60 °. The light leakage amount of the light leakage prevention unit 400 is reduced by about 40% from 60-degree slope to 40-degree slope, and the light leakage problem is greatly improved.
In this embodiment, step S210 further includes:
s220, forming a plurality of second recesses on the light leakage preventing unit 400 including the first slope 410 and/or the second slope 420 by using plasma gas treatment.
In this embodiment, when the light-leakage preventing unit 400 is a slope, the surface of the light-leakage preventing unit 400 includes a plurality of second recesses. The second recesses have the same effect as the first recesses 430 on the side surface of the metal wire 300, and may be formed on a slope body while being formed by bombardment with an inert gas or plasma inert gas treatment including the inert gas during the fabrication. Better diffuse reflection, reduced light leakage out of the display panel 100 intensity, improved display contrast of the display panel 100, and improved user visual experience.
In this embodiment, the first photoresist layer 500 may protect the top surface of the metal line 300 from the plasma gas, and referring to fig. 8, the performance of the metal line 300 is protected.
In this embodiment, step S200 includes:
s210, forming a first film layer on the side surface of the metal line 300.
S220, forming a second film layer on the first film layer, and patterning the second film layer, wherein the first film layer forms a first slope 410, and the second film layer forms a second slope 420 to form the light leakage preventing unit 400.
In this embodiment, the light leakage preventing unit 400 includes a first slope 410 and a second slope 420, and the first slope 410 is lapped on the side surface of the metal wire 300. The second slope 420 has a gradient smaller than that of the first slope 410, refer to fig. 4. The first film layer and the second film layer are made of molybdenum or molybdenum-copper alloy, so that the conductivity and corrosion resistance of the metal wire 300 can be improved, and a protective film is formed. Through the continuous gentle slope of second grade, can reduce the slope rapidly, can make longer gentle slope overlap joint in the side of wire 300, the light leak volume reduces more, and the light leak problem improves better.
In this embodiment, step S200 includes:
and S210, forming a whole light absorbing material film layer on the side surface of any metal wire 300 to form the light leakage preventing unit 400.
In this embodiment, the light leakage preventing unit 400 is disposed on the entire surface of the side surface of the metal wire 300. The light leakage preventing unit 400 is made of a light absorbing material. By providing the light leakage preventing unit 400 including a light absorbing material, diffracted light leakage is absorbed, and light leakage is reduced from exiting the display panel 100. The light absorbing material comprises black oil and a black matrix.
In this embodiment, step S200 includes:
s210, a plurality of first recesses 430 are formed on the side surface of the metal line 300 by plasma gas treatment to form the light leakage preventing unit 400.
In this embodiment, the side surface of the metal wire 300 includes a plurality of first recesses 430, and the light leakage preventing unit 400 is integrally disposed with the first recesses 430, as shown in fig. 5. The side surface of any one of the metal lines 300 includes a plurality of first recesses 430, and diffuse reflection is directly formed on the light leakage preventing unit 400 by the light leakage preventing unit 400 including the plurality of first recesses 430, and the first recesses 430 may be formed by bombardment with an inert gas or plasma inert gas treatment including the inert gas during the manufacturing process, thereby enhancing the diffuse reflection effect.
In this embodiment, the first photoresist layer 500 may protect the top surface of the metal line 300 from being affected by the plasma gas, so as to protect the performance of the metal line 300.
S300, stripping the first photoresist layer 500.
In this embodiment, the first photoresist layer 500 is stripped, and the subsequent manufacturing of the display panel 100 is performed.
According to the application, the light leakage prevention unit is arranged on the side surface of the metal wire, so that the roughness of the side surface of the metal wire is increased, light leakage which is not perpendicular to the substrate in the direction from the substrate to the metal wire is diffusely reflected, light diffraction and polarization direction change which are caused by the metal wire are reduced, light leakage which cannot be absorbed by the upper polarizing plate is reduced, the display contrast of the display panel is improved, and the user visual experience is improved.
Referring to fig. 9, the present application further provides a display device 10, including the display panel 100, the encapsulation layer 20 disposed on the display panel 100, and the cover layer 30 disposed on the encapsulation layer 20.
The specific structure of the display device 10 is shown in the embodiment of the display panel 100 and the embodiment of the manufacturing method of the display panel 100, and fig. 1 to 8, which are not repeated here.
The application discloses a display panel and a display device. The display panel comprises a substrate, a plurality of metal wires positioned on the substrate and a light leakage prevention unit positioned on the side surface of any one of the metal wires; the light leakage preventing unit is used for reducing light leakage of first type light rays of the display panel, wherein the first type light rays are light rays which are not perpendicular to the substrate in the direction from the substrate to the metal wire. According to the application, the light leakage prevention unit is arranged on the side surface of the metal wire, so that the roughness of the side surface of the metal wire is increased, light leakage which is not perpendicular to the substrate in the direction from the substrate to the metal wire is diffusely reflected, light diffraction and polarization direction change which are caused by the metal wire are reduced, light leakage which cannot be absorbed by the upper polarizing plate is reduced, the display contrast of the display panel is improved, and the user visual experience is improved.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
The foregoing has described in detail embodiments of the present application, and specific examples have been employed herein to illustrate the principles and embodiments of the present application, the above description of the embodiments being only for the purpose of aiding in the understanding of the technical solution and core idea of the present application; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.
Claims (7)
1. The display panel is characterized by comprising a substrate, a plurality of metal wires positioned on the substrate, and a light leakage prevention unit positioned on the side surface of any metal wire;
the light leakage prevention unit is used for reducing light leakage of first type light rays of the display panel, wherein the first type light rays are light rays which are not perpendicular to the substrate in the direction from the substrate to the metal lines;
the light leakage prevention unit comprises a first substance, wherein the first substance is copper chloride.
2. The display panel according to claim 1, wherein the content of the first substance gradually increases in a direction away from a center of the metal line.
3. The display panel according to claim 1, wherein an angle between a side surface of the light leakage preventing unit and the substrate is greater than or equal to 90 ° at a side away from the metal line.
4. The display panel according to claim 1, wherein the light leakage preventing unit is overlapped on a side surface of the metal line;
the gradient of the light leakage prevention unit and the substrate is smaller than that of the metal wire and the substrate.
5. The display panel of claim 4, wherein the light leakage prevention unit comprises a first slope and a second slope, the first slope overlapping the side surface of the metal wire;
the gradient of the second slope body is smaller than that of the first slope body.
6. The display panel according to claim 4, wherein a gradient of the light leakage preventing unit and the substrate is 40 ° to 60 °.
7. A display device, comprising the display panel of any one of claims 1-6, an encapsulation layer on the display panel, and a cover layer on the encapsulation layer.
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