CN113514993A - Array substrate, display panel and display device - Google Patents
Array substrate, display panel and display device Download PDFInfo
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- CN113514993A CN113514993A CN202110426944.5A CN202110426944A CN113514993A CN 113514993 A CN113514993 A CN 113514993A CN 202110426944 A CN202110426944 A CN 202110426944A CN 113514993 A CN113514993 A CN 113514993A
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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
- G02F1/133512—Light shielding layers, e.g. black matrix
-
- 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
- G02F1/13338—Input devices, e.g. touch panels
-
- 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
-
- 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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136209—Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element
-
- 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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/124—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Computer Hardware Design (AREA)
Abstract
The embodiment of the invention provides an array substrate, a display panel and a display device, wherein the array substrate comprises a substrate and a first metal layer; the first metal layer comprises a plurality of first metal wires extending along a first direction, and the first metal wires comprise a first bottom surface close to one side of the substrate, a first top surface positioned on one side of the first bottom surface far away from the substrate and a first side surface connecting the first bottom surface and the first top surface along the direction of the light-emitting surface of the array substrate; the width of the orthographic projection of the first top surface on the substrate base plate is larger than that of the orthographic projection of the first bottom surface on the substrate base plate along a second direction, and the second direction is intersected with the first direction and is parallel to the substrate base plate. The array substrate provided by the embodiment of the invention can improve the metal light leakage phenomenon caused by the high reflectivity of the first side surface on the first metal wire, particularly the dark oblique-view light leakage problem under a large viewing angle, and improve the viewing angle capability of the display device.
Description
Technical Field
The invention relates to the technical field of display, in particular to an array substrate, a display panel and a display device.
Background
With the development of display technology, the application field of display panels with advanced functions is in a diversified development stage, and the display panels have excellent performances in fields such as digital display, large-size television display, digital products, vehicle-mounted display and the like. In recent years, the vehicle-mounted display technology is rapidly developed and applied, and the visual effect requirement of the vehicle-mounted display equipment is higher and higher. When the display screen is observed in the inclined direction, the requirements of special visual angles required to be met for the display screens distributed at different positions in the vehicle are different; design adjustment and polaroid compensation optimization in the box are difficult to simultaneously consider different vehicle-mounted applications or different customer requirements, and the problems of multiple customization requirements, high cost and the like exist.
When the display device is in a dark state, the liquid crystal is affected by an irregular electric field or a terrain, so that human eyes can observe backlight brightness at certain squint positions, namely, the dark-state squint light leakage is generally said in the art. The existing design mainly improves the dark state light leakage condition under oblique vision by increasing the line width of the shading layer, and the like, but also restricts the resolution and the pixel aperture opening ratio of the display device, and reduces the penetration rate; in addition, the solution of increasing the line width of the light-shielding layer to the problem of light leakage due to dark-state squint caused by light reflection on the metal surface is insufficient.
Disclosure of Invention
The embodiment of the invention provides an array substrate, a display panel and a display device, which are used for solving the problem of aphonia state oblique vision light leakage caused by side reflection of a metal wire in the conventional display panel and display device and improving the visual effect of the display panel.
In a first aspect, an embodiment of the present invention provides an array substrate, where the array substrate includes a substrate and a first metal layer; the first metal layer comprises a plurality of first metal wires extending along a first direction, and the first metal wires comprise a first bottom surface close to one side of the substrate, a first top surface positioned on one side of the first bottom surface far away from the substrate and a first side surface connecting the first bottom surface and the first top surface along the direction of the light-emitting surface of the array substrate; the width of the orthographic projection of the first top surface on the substrate base plate is larger than that of the orthographic projection of the first bottom surface on the substrate base plate along a second direction, and the second direction is intersected with the first direction and is parallel to the substrate base plate.
In a second aspect, an embodiment of the present invention provides a display panel, including the array substrate of the first aspect; an opposing substrate disposed opposite to the array substrate; and a liquid crystal layer between the array substrate and the opposite substrate.
In a third aspect, an embodiment of the present invention provides a display device, including the display panel described above.
The embodiment of the invention provides an array substrate, a display panel and a display device, wherein the array substrate comprises a substrate and a first metal layer; the first metal layer comprises a plurality of first metal wires extending along a first direction, and the first metal wires comprise a first bottom surface close to one side of the substrate, a first top surface positioned on one side of the first bottom surface far away from the substrate and a first side surface connecting the first bottom surface and the first top surface along the direction of the light-emitting surface of the array substrate; the width of the orthographic projection of the first top surface on the substrate base plate is larger than that of the orthographic projection of the first bottom surface on the substrate base plate along a second direction, and the second direction is intersected with the first direction and is parallel to the substrate base plate. In the embodiment of the invention, the cross section width of the first bottom surface of the first metal wire at the side close to the substrate is smaller than the cross section width of the first top surface at the side far from the substrate, so that the inclination trend of the first side surface connecting the first bottom surface and the first top surface faces the direction away from the light-emitting surface of the array substrate; in addition, compared with the scheme of increasing the width of the black matrix in the prior art, the display panel or the display device where the array substrate is located has a higher pixel aperture ratio, and the display performance is improved.
Drawings
FIG. 1 is a diagram illustrating a film structure of a display panel according to the prior art;
fig. 2 is a schematic top view illustrating an array substrate according to an embodiment of the present invention;
FIG. 3 is a schematic view of a cross-sectional view taken along line A-A' of FIG. 2;
FIG. 4 is an enlarged view of a portion of Q of FIG. 3;
FIG. 5 is an enlarged view of a portion of Q of FIG. 3;
FIG. 6 is an enlarged view of a portion of Q of FIG. 3;
FIG. 7 is a schematic view of a further cross-sectional configuration taken along line A-A' of FIG. 2;
FIG. 8 is a schematic view of a further cross-sectional view taken along line A-A' of FIG. 2;
fig. 9 is a schematic top view of a display panel according to an embodiment of the present invention;
FIG. 10 is a schematic view of a cross-sectional view taken along line C-C' of FIG. 8;
FIG. 11 is a schematic view of a further cross-sectional configuration taken along line C-C' of FIG. 8;
fig. 12 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
It should be understood that the described embodiments are only some embodiments of the invention, and not all 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 invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that although the terms first and second may be used to describe the metal layer and the light shielding portion in the embodiments of the present invention, the insulating layer and the light shielding portion should not be limited by these terms. These terms are only used to distinguish the metal layer and the light shielding portion from each other. For example, the first metal layer may also be referred to as a second metal layer, and similarly, the second light shielding portion may also be referred to as a first light shielding portion, without departing from the scope of embodiments of the present invention.
In the prior art, as shown in fig. 1, a liquid crystal display panel 01 generally includes an array substrate 001 'and a color film substrate 002'; the color film layer 05 'and the light shielding layer 06' are disposed on the color film substrate 002 ', and the switching device layer 02', the metal trace 04 ', and the like are disposed on the array substrate 001'. The metal trace 04 ' in the array substrate 001 ' includes an upper top surface 041 ', a lower bottom surface 042 ', and an inclined side surface 043 ' connecting the upper top surface 041 ' and the lower bottom surface 042 '; the top surface 041 'and the bottom surface 042' are generally parallel to the light-emitting surface of the display panel 01, the inclined side surface 043 'intersects the light-emitting surface of the display panel 01, the cross-sectional width of the top surface 041' is smaller than that of the bottom surface 042 ', and the inclination trend of the inclined side surface 043' connecting the top surface 041 'and the bottom surface 042' extends toward the light-emitting surface of the array substrate 01. That is, in the light emitting direction of the display panel 01, the cross-sectional shape of the metal trace 04' formed by etching in the width direction is a regular trapezoid. The upper and lower surfaces of the liquid crystal display panel 01 are generally provided with upper and lower polarizers (not shown) parallel to the light-emitting surface of the display panel 01; thus, the extending direction of the inclined side 043 'of the metal trace 04' intersects with the upper polarizer and the lower polarizer. When the external light GX1 is irradiated onto the oblique viewing surface 043 'of the metal trace 04', the external light GX1 is reflected on the oblique side 043 'due to the high reflectivity of the metal on the oblique side 043' of the metal trace 04 ', and the propagation direction of the partially reflected light GX2 is directed to the pixel opening area 07'. Under the normal condition, because of the light filtering direction of upper and lower polaroids is perpendicular, after external light GX1 passed the lower polaroid, the light that sees through is the light of vibration along same direction, when display panel was in dark state picture, shine to pixel open area 07 'light and blockked and can not jet out display panel by the perception of people's eye by last polaroid, shine to the metal and walk line 04 'light on the surface and walk line self by the metal and shelter from, consequently can not observe luminance at display panel's each angle. However, if the metal of the oblique side 043 'of the metal trace 04' has high reflectivity, part of the external light GX1 passes through the lower polarizer and is reflected on the oblique side 043 ', the original polarization state of the incident light GX1 is changed, and the part of the reflected light GX2 cannot be filtered by the upper polarizer in the pixel opening area 07'; particularly, in the prior art, the cross section of the metal trace 04 ' in the width direction is in a shape of a regular trapezoid, and the inclined trend of the inclined side 043 ' extends toward the light-emitting surface of the array substrate 01, so that most of the reflected light GX2 generated at the inclined side 043 ' propagates toward the light-emitting surface of the display panel 01, and is perceived by human eyes after passing through the display panel 01, which causes the problem of dark-state oblique-view light leakage of the display panel 01 and affects the display effect of the display panel 01.
To solve the above problems, an embodiment of the present invention provides an array substrate, as shown in fig. 2, fig. 3 and fig. 4, fig. 2 is a schematic top view structure diagram of the array substrate provided in the embodiment of the present invention; FIG. 3 is a schematic view of a cross-sectional view taken along line A-A' of FIG. 3; FIG. 4 is an enlarged schematic view of structure Q of FIG. 3; as shown in fig. 2, 3 and 4, the array substrate 100 includes a substrate 10, a first metal layer 20; the first metal layer 20 includes a plurality of first metal signal lines 21 extending along a first direction, and in a direction of the light-emitting surface of the array substrate 100, the first metal lines 21 include a first bottom surface 212 close to one side of the substrate base plate 10, a first top surface 211 where the first bottom surface 212 is far away from one side of the substrate base plate 10, and a first side surface 213 connecting the first bottom surface 212 and the first top surface 211; the width D1 of the first top surface 211 orthographically projected on the substrate base plate 10 is greater than the width D2 of the first bottom surface 212 orthographically projected on the substrate base plate 10 along a second direction intersecting the first direction and parallel to the substrate base plate 10. .
For example, with continuing reference to fig. 2, fig. 3 and fig. 4, the extending direction of the first metal line 21 of the array substrate 100 in the embodiment of the present application is a first direction, and in the direction of the light emitting surface of the array substrate 100, the first metal line 21 includes a first bottom surface 212 close to one side of the substrate 10, a first top surface 211 located on one side of the first bottom surface 212 far from the substrate 10, and a first side surface 213 connecting the first top surface 211 and the first bottom surface 212, and the second direction is parallel to the substrate 10 and intersects with the first direction; in the embodiment of the present application, the second direction is perpendicular to the first direction, and the second direction is also the width cross-sectional direction of the first metal line 21. In the second direction, the width D1 of the first top surface 211 orthographically projected on the substrate base plate 10 is greater than the width D2 of the first bottom surface 212 orthographically projected on the substrate base plate 10. As shown in fig. 4, the cross-sectional shape Q of the first metal line 21 cut along the width direction thereof is "inverted trapezoid" with the plane perpendicular to the substrate base plate 10 and parallel to the second direction as the cross section, and the inclination trend of the first side surface 213 connecting the first bottom surface 212 and the first top surface 211 is toward the direction away from the light emitting surface of the array base plate 100. Thus, when the external incident light IL irradiates the first side surface 213 of the first metal line 21 in the array substrate 10 from the back surface of the substrate 10, most of the reflected light OL formed on the first side surface 213 propagates in a direction away from or parallel to the light-emitting surface of the array substrate 100 because the first side surface 213 is inclined away from the light-emitting surface of the array substrate 10, and will not exit the light-emitting surface of the array substrate 10 and be perceived by the external human eye. When the display panel using the array substrate 100 of this embodiment is in a dark-state image, a metal light leakage phenomenon caused by the high reflectivity of the metal on the first side surface 213 of the first metal line 21, especially a dark-state oblique-view light leakage problem under a large viewing angle, can be improved, and the viewing angle capability of the display device is improved.
It should be noted that the first metal line 21 described in the embodiment of the present application is various metal traces that can be conventionally disposed in the array substrate 100, including but not limited to data lines, gate lines, touch signal lines, fingerprint signal lines, and the like; the first metal line 21 may not transmit the driving signal, and only serves as a component existing in some functional structures, such as a light-shielding metal layer LSM located below a thin film transistor switching device layer in the array substrate 100, except for an active layer that normally shields the light-shielding metal layer LSM from the light-emitting device; the shading metal layer LSM can be made into a strip shape and arranged in a non-opening area of the pixel, and the shading effect of better preventing light crosstalk can be achieved because the shading metal layer LSM is closer to the backlight light source. In addition, the present application does not absolutely limit the type and material of the first metal line 21, and the first metal line 21 in the product should satisfy the requirements of the technical features of the embodiments of the present application.
Further exemplarily, referring to fig. 3 and fig. 4, when the first metal line 21 is a touch signal line, in order to prevent the disconnection caused by the etching process deviation or reduce the impedance of the touch signal line in the conventional design, the touch signal line is usually thickened and widened, the touch signal line is usually formed by stacking three metal materials of molybdenum-aluminum-molybdenum (Mo-Al-Mo) and performing wet etching to form a specific trace pattern, but for the reason of the manufacturing process, the first side surface 213 connecting the first top surface 211 and the first bottom surface 212 is not covered by the metal Mo with low reflectance completely by the first side surface 213, a large area of the highly reflective metal material Al on the first side surface 213 is exposed at the position where the external light IL can reach, the reflectance of the metal Al is as high as 90%, and the intensity of the high reflected light OL of the external light IL on the first side surface 213 of the touch signal line 21 is large, resulting in significant squint dark state light leakage and resulting deterioration of squint contrast, which in vehicle applications can result in viewing angles that do not meet the German OEM 5.0 specification requirements. When the lateral etching method of the touch signal line 21 according to the embodiment of the present application is adopted, the whole inclination trend of the first side surface 213 of the touch signal line 21 is towards the direction away from the light emitting surface of the array substrate 100, most of the reflected light OL generated on the first side surface 213 of the touch signal line 21 is dissipated inside the array substrate, and when the array substrate 100 according to the embodiment of the present application is used for assembling a display panel or a display device, the dark state oblique view metal light leakage phenomenon caused by the touch signal line 21 can be significantly reduced, and the reliability of the vehicle-mounted display application is improved
Optionally, please continue to refer to fig. 3 and 4; in the second direction, a surface angle a between the first side surface 213 and an extension surface of the first bottom surface 212 is acute.
Illustratively, as shown in fig. 4, the first side surface 213 intersects with the plane of the first bottom surface 212, and the included angle between the first side surface 213 and the extending surface of the first bottom surface 212 is an acute angle along the second direction. By setting the surface angle from the first side surface 213 to the first bottom surface 212 to an acute angle, when the incident light IL irradiated onto the first side surface 213 is reflected, as much reflected light OL as possible is emitted in a direction away from the light-emitting surface, thereby reducing the dark-state squint light leakage phenomenon caused by the reflected light on the surface of the first metal wire 21. It is understood that the smaller the angle of the included angle a, the better the improvement effect on the oblique light leakage in the dark state.
It should be noted that fig. 4 only illustrates the shape of the first side surface 213 as a plane, but in practice, the first side surface 213 may have other shapes, and the embodiment of the present application does not limit the specific form of the first side surface 213 in any way, as long as the required technical features of the embodiment are met, and the present application is within the scope of the present application.
Further alternatively, FIG. 5 is an enlarged schematic view of a portion of Q of FIG. 3; at least part of the surface of the first side 213 is covered with a low reflection film layer 214, and the reflectivity of the low reflection film layer 214 is at least lower than that of the metal material of the first side 213;
illustratively, the low-reflection film layer 214 may be made of a low-reflection metal material, and the reflectivity of the low-reflection film layer 214 is at least lower than the surface reflectivity of the metal material of the first side 213. For example, when the metal material of the first side 213 includes titanium, aluminum, titanium, the reflectance of titanium is lower than that of aluminum; the low reflection film 214 may be made of molybdenum or tungsten material, so that the reflectivity of the low reflection film 214 is at least smaller than the reflectivity of aluminum; alternatively, in the array substrate 100 in this embodiment, the low reflection film layer 214 may also be formed of an organic material with a low reflection coefficient, and the reflection coefficient of the organic material forming the low reflection film layer 214 is lower than the reflection coefficient of the metal material of the first side 213. Thus, the light reflection problem caused by the high-reflection metal material on the first side surface 213 can be reduced, and the dark-state light leakage problem of the display panel and the display device where the array substrate 100 is located can be improved, thereby improving the viewing angle capability.
It should be appreciated that, in order to further reduce the light reflection problem occurring on the first side 213, the greater the coverage of the first side 213 by the low-reflection film layer 214, the better the effect; for example, the low reflection film layer 214 completely covers the first side 213 of the first metal line 21.
Alternatively, FIG. 6 is an enlarged schematic view of a further structure of Q in FIG. 3; along the light emitting direction of the array substrate 100, at least a portion of the first side surface 213 is an arc surface, and the arc surface is curved toward a direction departing from the central axis O' of the first metal line 21.
For example, referring to fig. 6, the first side surface 213 is an arc surface, and the arc surface is curved in a direction departing from the central axis O' of the first metal line 21; with such an arrangement, in the direction pointing to the first top surface 212 along the first bottom surface 212, the included angle between the first side surface 213 and the first bottom surface 212 becomes smaller and smaller, so that when the incident light IL irradiates the first side surface 213 and is reflected, a larger proportion of the reflected light OL is emitted toward the direction departing from the light-emitting surface, and the improvement effect of dark-state oblique-view light leakage is further improved. Meanwhile, the first side surface 213 is set to be an arc surface, so that the effect of converging light rays to a certain degree is achieved, and the visual angle contrast is improved.
Optionally, the array substrate in this embodiment of the application further includes a first electrode layer, the first electrode layer includes a plurality of first electrodes arranged in an array, and the first metal line is electrically connected to the first electrodes and transmits corresponding driving signals to the first electrodes.
When the first electrode layer is a pixel electrode layer, the first electrode is a pixel electrode, and the first metal line can be a data line; when the first electrode layer is a touch electrode layer, the first electrode is a touch electrode, and the first metal wire is a touch signal wire; when the first electrode layer is a light sensing electrode layer, the first electrode is a light sensing electrode, and the first metal wire is a fingerprint signal wire. The above scenarios are merely examples and do not constitute specific limitations on the above structural features.
Illustratively, FIG. 7 is a schematic view of a further cross-sectional configuration taken along A-A' of FIG. 2; with continued reference to fig. 2 and fig. 7, the array substrate 100 includes a plurality of data lines 21 and a plurality of scan lines 81, the data lines 21 and the scan lines 81 are crossed to define a plurality of sub-pixels PX, each sub-pixel PX is correspondingly provided with at least one pixel electrode 51, and a thin film transistor T is disposed at the crossing position of each scan line 81 and each data line 21. The data line 21 is electrically connected to the pixel electrode 51 through the thin film transistor T, and transmits a pixel voltage driving signal to the sub-pixel PX corresponding to the pixel electrode 51. In the prior art, the data line 21 is also formed by etching a multi-layer stacked metal structure, and the metal material forming the three-layer stacked structure of the data line 21 is usually titanium, aluminum, or titanium, for example, along the light emitting direction of the array substrate 100; since the reflectance of titanium is lower than that of aluminum, the light reflectance of the first top surface 211 and the first ground surface 212 of the data line 21 is lower, but due to the manufacturing process, the first side surface 213 connecting the first top surface 211 and the first bottom surface 212 is not completely covered by the metal Ti with the low reflectance, a larger area of the highly reflective metal material Al on the first side surface 213 is exposed at the position where the external light IL can reach, and the area of the exposed metal Al is larger as the etching tape angle of the first side surface 213 of the data line 21 is smaller, and the dark-state oblique-view light leakage phenomenon caused by the light reflection of the external light IL on the first side surface 213 of the data line 21 is more serious. When the lateral etching manner of the data line 21 of the embodiment of the present application is adopted to form the "inverted trapezoid" transverse cross-sectional structure, the overall inclination trend of the first side surface 213 of the data line 21 is towards the direction away from the light emitting surface of the array substrate 100, and most of the reflected light OL generated on the first side surface 213 of the data line 21 is dissipated inside the array substrate 100; thus, the reflection of the data line 21 to light, especially the reflection of the first side 213 containing metal with a large reflection coefficient to light, can be reduced, so as to effectively improve the problem of light leakage in the dark state of the display panel or the display device where the array substrate 100 is located
Illustratively, FIG. 8 is a schematic view of a further cross-sectional configuration taken along A-A' of FIG. 2; please refer to fig. 2 and 7; the array substrate 100 includes a first electrode layer 40, the first electrode layer 40 includes a plurality of touch electrodes 41 arranged in an array, the first metal line 21 is a touch signal line, and the touch signal line 21 is electrically connected to the touch electrodes 41; the touch signal lines 21 transmit the touch driving signals to the touch electrodes 41, and the touch electrodes 41 are integrated in the array substrate 100, so that the integration level of a display panel or a display device using the array substrate 100 according to the embodiment of the present disclosure can be improved.
Further optionally, with continued reference to fig. 2 and fig. 8, the array substrate 100 further includes a second metal layer 30, where the second metal layer 30 includes a plurality of second metal lines 31 extending along the first direction; on the plane of the substrate base plate 10, the orthographic projection of the second metal wire 31 at least partially overlaps with the orthographic projection of the first metal wire 41.
For example, the first metal line 21 and the second metal line may be one of a touch signal line, a data line, a fingerprint signal line, a light-shielding metal line, and the like; by arranging the second metal lines 31 to be at least partially overlapped with the first metal lines 21 in the light emitting direction of the array substrate 100, the width of a black matrix for covering the metal routing lines can be reduced, and the penetration rate of the array substrate 100 can be improved. For example, when the first metal line 21 is a touch signal line, the second metal line 31 is a data line, and the data line 31 is disposed on a side of the touch signal line 21 close to the substrate 10, the influence of the voltage signal on the data line 31 on the pixel electrode can be reduced by using the shielding effect of the touch signal line 21.
Fig. 9 is a schematic top view of a display panel according to an embodiment of the present invention; FIG. 10 is a schematic view of a cross-sectional view taken along line C-C' of FIG. 9; fig. 11 is a schematic cross-sectional view taken along the direction C-C' in fig. 9, and referring to fig. 9, 10 and 11, the display panel 1000 includes any one of the array substrates 100 provided by the above-mentioned embodiments of the present invention; the display panel 1000 provided by the embodiment of the invention has the beneficial effects of the array substrate 100 provided by the embodiment of the invention, and the opposite substrate 200 and the liquid crystal layer 300 located between the array substrate 100 and the opposite substrate 200 can refer to the description of the array substrate, and the description thereof is omitted here for brevity.
It should be noted that, the display panel 1000 according to the embodiment of the present invention further includes a color filter layer 60, where the color filter layer 60 includes a plurality of color set units 61 with different colors; the color filter layer 60 may be provided on the counter substrate 200 as shown in fig. 10; may be provided on the array substrate 100 as shown in fig. 11.
Optionally, with continued reference to fig. 9, 10 and 11, the display panel 1000 further includes a light-shielding layer 70, where the light-shielding layer 70 includes a plurality of first light-shielding portions 711 extending along a first direction and a plurality of second light-shielding portions 712 extending along a second direction, and the first light-shielding portions 711 and the second light-shielding portions 712 intersect to define a plurality of pixel openings arranged in an array; the first metal line 21 is located on the side of the light shielding layer 70 close to the substrate 10, and the width of the orthographic projection of the first light shielding part 711 covering the first metal line 21 on the substrate 10 is 6 μm or more and 8 μm or less.
Exemplarily, with continuing reference to fig. 9, 10 and 11, the display panel 1000 includes a light-shielding layer 70, the light-shielding layer 70 includes a grid-shaped light-shielding portion 71, wherein the light-shielding portion 71 is formed by intersecting a plurality of first light-shielding portions 711 extending along a first direction and a plurality of second light-shielding portions 722 extending along a second direction, and the light-shielding portion 71 is usually formed by a black opaque material, also referred to as a black matrix. The light shielding portion 71 defines an actual opening region of the sub-pixels arranged in an array for transmitting a part of light emitted from the backlight to form an image. The shading part 71 can not only prevent the light crosstalk between adjacent sub-pixels with different colors, but also improve the picture contrast; the metal light shielding layer can also be used for shielding various opaque metal lines below the light shielding layer 71 in the display panel 1000, and simultaneously, the metal light leakage phenomenon caused by light reflection on the surface of the metal lines is weakened to a certain degree. In the conventional design, when the tape angle of the first metal line is etched at an acute angle (i.e. the cross section of the first metal line is in a regular trapezoid shape), in order to ensure that the first metal line 21 does not have a significant light leakage problem in an oblique-viewing dark state, the size of the first light-shielding portion 712 in the prior art is usually set to be relatively large, and is generally 13 μm. In the embodiment, since the first metal line 21 forms the inverted trapezoid-shaped cross-sectional structure by side etching, most of the reflected light on the surface of the first metal line 21 is dissipated inside the display panel 1000, and the large-viewing-angle metal oblique-viewing light leakage phenomenon caused by the display panel 1000 is avoided, so that the width of the first light-shielding portion 712 in the embodiment of the present application can be reduced, and when the width of the orthographic projection of the first light-shielding portion 712 on the substrate 10 is greater than or equal to 6 μm, the metal light leakage problem can be avoided; meanwhile, considering the problem that the too large width of the first light-shielding portion 712 affects the aperture ratio of the sub-pixel, the width of the orthographic projection of the first light-shielding portion 712 on the substrate 10 is less than or equal to 8 μm, so the design can greatly improve the aperture ratio and reduce the backlight power consumption.
It should be noted that the light-shielding layer 70 in the display panel 1000 illustrated in fig. 10 and 11 is located on one side of the stacked substrate 200, and in practical applications, the position of the light-shielding layer 70 may also be located on one side of the array substrate 100, and the actual position in the array substrate 100 may be adjusted according to the light-shielding requirement, and the embodiment of the present application does not limit the specific position of the light-shielding layer 70, for example, the light-shielding layer 70 may be located on an upper surface layer of the array substrate 100 closest to the liquid crystal layer 300, or may be directly located above a light-tight metal layer of the array substrate 100 closest to the liquid crystal layer 300.
For example, fig. 12 is a schematic structural diagram of a display device according to an embodiment of the present invention. As shown in fig. 12, the display device may be a mobile phone, a display screen, or the like, and particularly may be a vehicle-mounted medium-sized display screen.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. An array substrate comprises a substrate base plate and a first metal layer; the first metal layer comprises a plurality of first metal wires extending along a first direction, and the first metal wires comprise a first bottom surface close to one side of the substrate base plate, a first top surface located on one side of the first bottom surface far away from the substrate base plate and a first side surface connecting the first bottom surface and the first top surface in the direction of the light-emitting surface of the array base plate; the width of the orthographic projection of the first top surface on the substrate base plate is larger than the width of the orthographic projection of the first bottom surface on the substrate base plate along a second direction, and the second direction is intersected with the first direction and is parallel to the substrate base plate.
2. The array substrate of claim 1, wherein a surface angle between the first side surface and the extending surface of the first bottom surface along the second direction is an acute angle.
3. The array substrate of claim 2, wherein at least a portion of the first side surface along the light exit direction of the array substrate is an arc surface, and the arc surface is curved in a direction away from the central axis of the first metal line.
4. The array substrate of claim 2, wherein at least a portion of the first side surface is covered with a low-reflection film layer, and the reflectivity of the low-reflection film layer is at least lower than the reflectivity of the metal material of the first side surface portion.
5. The array substrate of claim 1, further comprising a first electrode layer, wherein the first electrode layer comprises a plurality of first electrodes arranged in an array, and the first metal line is electrically coupled to the first electrodes and transmits corresponding driving signals to the first electrodes.
6. The array substrate of claim 5, further comprising a second metal layer, wherein the second metal layer comprises a plurality of second metal lines extending along a first direction; on the plane of the substrate base plate, the orthographic projection of the second metal wire along the second direction at least partially overlaps with the orthographic projection of the first metal wire along the second direction.
7. The array substrate of claim 1 or 6, wherein the first metal line and/or the second metal line comprises a touch signal line, a data line, a fingerprint identification signal line, a light shielding metal line, and the like.
8. A display panel comprising the array substrate according to any one of claims 1 to 7; the liquid crystal display panel comprises an opposite substrate and a liquid crystal layer positioned between the array substrate and the opposite substrate.
9. The display panel according to claim 8, wherein the display panel further comprises a light shielding layer comprising a plurality of first light shielding portions extending in the first direction and a plurality of second light shielding portions extending in the second direction, the first light shielding portions and the second light shielding portions intersecting to define a plurality of sub-pixel openings arranged in an array; the first metal wire is positioned on one side of the light shielding layer close to the substrate, and the width of the orthographic projection of the first light shielding part covering the first metal wire on the substrate is greater than or equal to 6 microns and smaller than or equal to 8 microns.
10. A display device comprising the display panel according to any one of claims 8 to 9.
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| CN114326233A (en) * | 2021-12-30 | 2022-04-12 | 惠科股份有限公司 | Array substrate, display panel and display device |
| CN115509050A (en) * | 2022-10-09 | 2022-12-23 | 厦门天马微电子有限公司 | Display panel and display device |
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| CN207264349U (en) * | 2017-09-18 | 2018-04-20 | 云谷（固安）科技有限公司 | A kind of contact panel and display device |
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| CN106932956A (en) * | 2017-05-22 | 2017-07-07 | 厦门天马微电子有限公司 | Array base palte, display panel and display device |
| CN207264349U (en) * | 2017-09-18 | 2018-04-20 | 云谷（固安）科技有限公司 | A kind of contact panel and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114326233A (en) * | 2021-12-30 | 2022-04-12 | 惠科股份有限公司 | Array substrate, display panel and display device |
| CN115509050A (en) * | 2022-10-09 | 2022-12-23 | 厦门天马微电子有限公司 | Display panel and display device |
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