CN109633973B - Array substrate, manufacturing method thereof and display device - Google Patents
Array substrate, manufacturing method thereof and display device Download PDFInfo
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- CN109633973B CN109633973B CN201910114527.XA CN201910114527A CN109633973B CN 109633973 B CN109633973 B CN 109633973B CN 201910114527 A CN201910114527 A CN 201910114527A CN 109633973 B CN109633973 B CN 109633973B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/09—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 magneto-optical elements, e.g. exhibiting Faraday effect
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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
- G02F1/133528—Polarisers
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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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
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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
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
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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
- G02F1/136—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
- G02F1/136227—Through-hole connection of the pixel electrode to the active element through an insulation layer
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Geometry (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Liquid Crystal (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention relates to an array substrate, which comprises a grid line and a data line which are arranged in a crossed manner, wherein the grid line and the data line define a pixel region, a pixel electrode and a display unit driven by the pixel electrode are arranged in the pixel region, and the array substrate also comprises: and the magneto-optical film is positioned on the pixel electrode and used for changing the angle of emergent light of the display unit. The invention also relates to a manufacturing method of the array substrate and a display device. The magneto-optic effect of the magneto-optic film is utilized to control the deflection angle of the linearly polarized light, the traditional purpose of utilizing liquid crystal to realize light deflection is replaced, and the magneto-optic film has the advantages of environmental protection and energy saving. Light weight, high aperture ratio, and high dynamic response speed.
Description
Technical Field
The invention relates to the technical field of manufacturing of display products, in particular to an array substrate, a manufacturing method of the array substrate and a display device.
Background
The basic principle of the liquid crystal display is to control the transmission of light by utilizing the anisotropy of liquid crystal molecules propagating in an electric field, thereby achieving the effect of picture display. The prior art has drawbacks in that the optical anisotropy of the liquid crystal molecules causes the display to have a certain viewing angle range; the liquid crystal material has certain toxicity and has leakage risk; at the same time, the dynamic response speed is slow due to many limitations of the liquid crystal material molecules in terms of their viscosity and mechanical-electromagnetic properties.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides an array substrate, a method for manufacturing the same, and a display device, which solve the problems of slow dynamic response speed caused by liquid crystal.
In order to achieve the purpose, the invention adopts the technical scheme that: an array substrate comprises a grid line and a data line which are arranged in a crossed mode, wherein the grid line and the data line define a pixel region, a pixel electrode and a display unit driven by the pixel electrode are arranged in the pixel region, and the array substrate further comprises: and the magneto-optical film is positioned on the pixel electrode and used for changing the angle of emergent light of the display unit.
Optionally, the display device further includes a common electrode disposed on the same layer as the gate line, the common electrode is connected to the pixel electrode, the thin film transistor includes a source electrode, a drain electrode, and a gate electrode, the drain electrode is connected to the pixel electrode, the source electrode is connected to the data line, the gate electrode is connected to the gate line,
the grid line inputs high level, the signal of the data line is transmitted to the pixel electrode through the thin film transistor so as to charge a pixel capacitor formed by the pixel electrode and the common electrode, and a magnetic field generated by current on the pixel electrode enables the magneto-optical film to generate a magneto-optical effect so as to change the intensity of emergent light of the array substrate.
Optionally, the pixel electrode is a slit electrode, and the slit electrode is linear or curved.
The invention also provides a manufacturing method of the array substrate, which is used for manufacturing the array substrate and comprises the following steps:
forming a grid electrode, a grid line and a common electrode on a substrate;
forming a gate insulating layer covering the whole substrate on the gate and the gate line;
forming a source electrode and a drain electrode on the gate insulating layer, and a data line perpendicularly crossing the gate line;
forming a passivation layer, and forming a passivation layer through hole above the drain electrode;
forming a pixel electrode, wherein the pixel electrode is positioned in a pixel region formed by the grid line and the data line in a crossed manner, the pixel electrode is connected with the drain electrode through a first through hole on the passivation layer, and the pixel electrode is connected with the common electrode through a second through hole on the passivation layer;
a magneto-optical film is formed on the pixel electrode.
Optionally, the pixel electrode is a slit electrode, and the slit electrode is linear or curved.
The present invention also provides a display device including:
the first polarizing element is used for converting light rays into linearly polarized light;
the array substrate is used for deflecting the angle of the polarization direction of the linearly polarized light emitted by the first polarization element;
and the second polarizing element is used for shielding or transmitting the linearly polarized light emitted by the array substrate.
Optionally, the first polarizing element is a polarizer.
Optionally, the second polarizing element is a polarizing plate, and a transmission axis direction of the second polarizing element is perpendicular to a transmission axis direction of the first polarizing element.
Optionally, the display device further includes a color filter disposed between the array substrate and the second polarizer.
The invention has the beneficial effects that: the magneto-optic effect of the magneto-optic film is utilized to control the deflection angle of the linearly polarized light, the traditional purpose of utilizing liquid crystal to realize light deflection is replaced, and the magneto-optic film has the advantages of environmental protection and energy saving. Light weight, high aperture ratio, and high dynamic response speed.
Drawings
FIG. 1 is a schematic view of an array substrate according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a driving circuit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a pixel electrode according to an embodiment of the invention;
FIG. 4 is a schematic diagram illustrating a pixel electrode according to another embodiment of the present invention;
FIG. 5 is a schematic diagram of a display device according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.
The optical anisotropy of the liquid crystal molecules enables the display to have a certain visual angle range; the liquid crystal material has certain toxicity and has leakage risk; meanwhile, due to the problems of various limitations of liquid crystal material molecules in the aspects of viscosity and mechanical and electromagnetic properties, low dynamic response speed and the like, the embodiment provides the array substrate, linearly polarized light is controlled by utilizing the magneto-optical effect of the magneto-optical film to deflect the angle, the traditional purpose of utilizing liquid crystal to realize light deflection is replaced, and the array substrate is environment-friendly and energy-saving. Light weight, high aperture ratio, and high dynamic response speed.
As shown in fig. 1, an array substrate includes a gate line 10 and a data line 20 that are arranged in a crossing manner, the gate line 10 and the data line 20 define a pixel region, a pixel electrode 5 and a display unit driven by the pixel electrode 5 are arranged in the pixel region, and the array substrate further includes: and the magneto-optical film 4 is positioned on the pixel electrode 5 and used for changing the angle of emergent light of the display unit.
By adopting the scheme, the magneto-optic effect of the magneto-optic film 4 is utilized to control the deflection angle of the linearly polarized light, and the traditional purpose of utilizing liquid crystal to realize light deflection is replaced, so that the problems of slow response speed of switching caused by the liquid crystal and the like are avoided, and the magneto-optic film is environment-friendly and energy-saving. Light weight, high aperture ratio, and high dynamic response speed.
In this embodiment, the magneto-optical film 4 is a functional material film, and is made of an optical information functional material having a magneto-optical effect in visible light and infrared light bands, and is preferably made of a garnet doped with various rare earth elements, a rare earth-transition metal alloy film, a magnetic photonic crystal, or the like.
The specific structure of the magneto-optical film 4 for generating a magneto-optical effect to change the angle of the emergent light of the display unit can be various, and in this embodiment, optionally, the array substrate further includes a common electrode 6 disposed on the same layer as the gate line 10, the common electrode 6 is connected to the pixel electrode 5, the thin film transistor includes a source electrode 2, a drain electrode 3 and a gate electrode 1, the drain electrode 3 is connected to the pixel electrode 5, the source electrode 2 is connected to the data line 20, and the gate electrode 1 is connected to the gate line 10,
the grid line 10 inputs high level, the signal of the data line 20 is transmitted to the pixel electrode 5 through the thin film transistor to charge the pixel capacitor formed by the pixel electrode 5 and the common electrode 6, and the magneto-optical film 4 generates magneto-optical effect by the magnetic field generated by the current on the pixel electrode 5 to change the intensity of emergent light of the array substrate.
As shown in fig. 1, the gate 1 controls the on and off of the tft, and Source-Drain is mainly responsible for charging and discharging the pixel electrode 5. The pixel electrode 5 is connected to the drain 3 through a first via 11, and the pixel electrode 5 is connected to the common electrode 6 through a second via 12, when the data line 20 provides a signal, the gate 1 is turned on, and the source 2 is at a high potential, the pixel electrode 5 can be charged, at this time, electrons in a certain direction will move in a line formed by the pixel electrode 5 and the common electrode 6 due to a voltage difference, that is, a directional current is generated, arrows in fig. 1 show the current trends in the pixel electrode 5 and the common electrode 6, and a circuit connection diagram in this embodiment is as shown in fig. 2 (the pixel electrode 5 is not shown, wherein Vcom represents one end connected to the common electrode). When current flows in the pixel electrode 5, a corresponding magnetic field can be generated to influence the magneto-optical film 4 positioned on the pixel electrode 5, so that the purpose of optical rotation is achieved.
The common electrode 6 is connected to a low level or ground, and the voltage of the common electrode 6 may be zero, but is not limited thereto, as long as a voltage difference exists between the lines formed by the pixel electrodes 5 and the common electrode 6.
The common electrode 6 may be a common electrode 6 on an array substrate in a general structure, or may be additionally disposed on the basis of the array substrate in the general structure.
For ease of understanding, the relevant principles of magneto-optical effects are described below:
the interaction of light with substances having a magnetic moment produces a magneto-optical effect. The mechanism of the magneto-optical effect is that when a substance with a fixed magnetic moment is placed in a magnetic field, the electromagnetic properties (such as magnetic permeability, magnetic domain structure, dielectric constant, magnetization intensity, and the like) of the substance change under the action of an external magnetic field, so that the transmission properties (such as polarization state, transmission direction, phase, frequency, and the like) of light waves in the substance also change, and the magneto-optical effect is generated. A magneto-optical device is a functional device that is very important in the information age, and the two most studied magneto-optical effects are the faraday effect and the kerr effect.
The embodiment of the invention utilizes the Faraday effect.
In 1845, Faraday (Faraday) discovered a phenomenon when studying the link between electromagnetic and optical phenomena: when a plane-polarized light beam passes through a medium, if a magnetic field is applied to the medium in the direction of propagation of the light beam, it is observed that the plane of polarization is rotated by an angle after the light beam passes through a sample, which indicates that the medium is optically active by the magnetic field, and this phenomenon is later referred to as the faraday effect.
Introducing a Faraday rotation angle theta in the Faraday effectFWhich represents the angle of rotation of the plane of polarization occurring per unit thickness, is proportional to the product of the magnetic induction H and the distance L over which the light acts,i.e. thetaFHLV. Where V is the Fisher constant in rad/(m.T), reflecting the magnitude of the Faraday effect in magneto-optical materials, is an important parameter.
The magnetic effect of the current is also utilized in the embodiment of the invention.
Oersted discovered in 7 months of 1820 that the magnetic effect of current, a phenomenon that any conducting wire passing current can generate a magnetic field around it, is called magnetic effect of current (i.e. a magnetic field is generated around the line formed by the pixel electrode 5 and the common electrode 6 in this embodiment), and this effect is called magnetic effect of current. The magnitude and direction of the generated magnetic field are closely related to the magnitude and direction of the current. In which a non-magnetic metal is energized but produces a magnetic field with the same effect as the magnetic field created by the magnet. The magnetic field is generated around the long straight wire which is electrified with the current, the shape of the magnetic induction line is a closed concentric circle taking the wire as the center of the circle, and the direction of the magnetic field is perpendicular to the direction of the current.
The field strength generated by the current can be referred to the pisa law. In vacuum, the magnetic induction dB generated by the constant current element vector Idl at one point P in space is as follows:
dl in the above formula is the line element of the current-carrying conducting wire, and the direction of dl is the direction of current; r is the radial vector from the current element to the point P; mu.s0＝4π×10-7Henry/meter (H/m) is the vacuum permeability, and the above equation can be further varied as:
wherein theta is an included angle between dl and r; the direction of dB is vertical to the plane formed by the current element and the radial vector and is determined by a right-hand spiral rule; I. dl and r, dB are respectively in units of ampere, meter, Tesla.
Based on the Faraday effect and the current magnetic effect, the deflection of light can be controlled by controlling the magnetic field through the current, so that the deflection of light controlled by the current is finally realized, and theoretical possibility is provided for designing a TFT display based on the magneto-optical effect.
In this embodiment, one end of the pixel electrode 5 is connected to the data line 20 through the drain 3, the other end of the pixel electrode 5 is connected to the signal line of the common electrode 6 through the common electrode 6, the magnitude of the magnetic field intensity can be adjusted and controlled according to the voltage difference between the data line 20 and the signal line of the common electrode 6 (voltage is proportional to current, and current is proportional to the magnetic field intensity), and the direction of the magnetic field can be adjusted and controlled according to the direction of the pixel current (such as the arrangement mode of the pixel electrode 5), so as to control the magnitude and the direction of the magnetic field.
In this embodiment, the pixel electrode 5 is a slit electrode, the shape of the slit electrode is a straight line or a curved line, and two shapes of the pixel electrode 5 are shown in fig. 3 and 4, wherein an arrow indicates a current direction in the pixel electrode,
the direction of the magnetic field is shown, 100 is a first end of the pixel electrode 5 for receiving the signal transmitted by the data line 10, and 200 is a second end of the pixel electrode 5 for receiving the signal transmitted by the common electrode 6.
The shape of the pixel electrode 5 is not limited to the above-described shape, and may be other shapes, and may be set according to actual needs so as to achieve an optimum magnetic field effect.
The invention also provides a manufacturing method of the array substrate, which is used for manufacturing the array substrate and comprises the following steps:
forming a gate electrode 1 and a gate line 10, and a common electrode 6 on a substrate;
forming a gate insulating layer covering the whole substrate on the gate 1 and the gate line 10;
forming a source electrode 2 and a drain electrode 3 on the gate insulating layer, and a data line 20 perpendicularly crossing the gate line 10;
forming a passivation layer, and forming a passivation layer through hole above the drain electrode 3;
forming a pixel electrode 5, wherein the pixel electrode 5 is positioned in a pixel region formed by crossing the gate line 10 and the data line 20, the pixel electrode 5 is connected with the drain electrode 3 through a first via hole on a passivation layer, and the pixel electrode 5 is connected with the common electrode 6 through a second via hole on the passivation layer;
a magneto-optical film 4 is formed on the pixel electrode 5.
Alternatively, the pixel electrode 5 is a slit electrode, the shape of the slit electrode is a straight line or a curved line, and two shapes of the pixel electrode 5 are shown in fig. 3 and 4, wherein an arrow indicates a current direction in the pixel electrode,
indicating the direction of the magnetic field.
The shape of the pixel electrode 5 is not limited to the above-described shape, and may be other shapes, and may be set according to actual needs so as to achieve an optimum magnetic field effect.
The present invention also provides a display device, as shown in fig. 5, including:
a first polarizing element 7 for converting light into linearly polarized light;
the array substrate is configured to deflect an angle of a polarization direction of linearly polarized light emitted by the first polarizer 7;
and the second polarizing element 8 is used for shielding or transmitting the linearly polarized light emitted by the array substrate.
Optionally, the first polarizing element 7 is a polarizer, but not limited thereto.
Optionally, the second polarizing element 8 is a polarizing plate, and a transmission axis direction of the second polarizing element 8 is perpendicular to a transmission axis direction of the first polarizing element 7.
In fig. 5, an arrow on the first polarizing element 7 indicates a light transmission axis direction of the first polarizing element 7, a solid arrow on the magneto-optical film 4 indicates a polarization direction of light that is deflected by an angle θ by a magneto-optical effect of the magneto-optical film, an arrow on the color filter 9 indicates a polarization direction of light that passes through the color filter 9, a solid arrow on the second polarizing element 8 indicates a polarization direction of light incident on the second polarizing element 8, a dotted arrow on the second polarizing element 8 indicates a light transmission axis direction of the second polarizing element 8, a bold arrow below the first polarizing element 7 indicates light incident on the first polarizing element 7, and a bold arrow above the second polarizing element 8 indicates light emitted from the second polarizing element.
The transmission axis direction of the first polarizing element 7 and the transmission axis direction of the second polarizing element 8 are perpendicular to each other, light emitted by a backlight source of the display device is converted into linearly polarized light after passing through the first polarizing element 7, under the condition of no external magnetic field, the magneto-optical film 4 cannot generate a magneto-optical effect, and the linearly polarized light formed by the first polarizing element 7 is not deflected and cannot be transmitted out of the second polarizing plate; under the condition of an external magnetic field, the magneto-optical film 4 generates a magneto-optical effect under the action of the external magnetic field, and linearly polarized light passing through the magneto-optical film 4 can deflect for a certain angle, so that the linearly polarized light after deflection cannot be completely blocked by the second polarization element 8, at least part of light can penetrate through the second polarization element 8, and the aim of controlling light intensity is fulfilled.
The different magnetic field intensity of the external magnetic field says that the deflection angle of the linearly polarized light after passing through the magneto-optical film 4 is different, so that the light intensity of the light transmitted by the second polarizing element 8 is different.
Optionally, the display device further includes a color filter 9 disposed between the array substrate and the second polarizer, so that color display can be achieved.
The display device may be: the display device comprises any product or component with a display function, such as a liquid crystal television, a liquid crystal display, a digital photo frame, a mobile phone, a tablet personal computer and the like, wherein the display device further comprises a flexible circuit board, a printed circuit board and a back board, and has application value in the fields of AR (Augmented Reality)/VR (Virtual Reality) and the like in the future.
The advantages of the display device in this embodiment are mainly as follows:
1. the magneto-optical film is used as a novel light deflection material, has the advantages of small volume and higher light deflection effect, and is favorable for the further miniaturization trend of a display device;
2. the design idea of the mainstream TFT at present is combined, the special arrangement design is carried out on the pixel electrodes, the advantage of good compatibility with the prior art is achieved, and the practical mass production is facilitated;
3. the effect of replacing liquid crystal is achieved, and the display device becomes a novel display technology without liquid crystal.
The above embodiments are preferred embodiments of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The array substrate is characterized by comprising grid lines and data lines which are arranged in a crossed mode, wherein the grid lines and the data lines define a pixel region, a pixel electrode and a display unit driven by the pixel electrode are arranged in the pixel region, and the array substrate further comprises: a magneto-optical film on the pixel electrode for changing an angle of outgoing light of the display unit;
the pixel structure further comprises a thin film transistor and a common electrode arranged on the same layer as the grid line, the common electrode is connected with the pixel electrode, the thin film transistor comprises a source electrode, a drain electrode and a grid electrode, the drain electrode is connected with the pixel electrode, the source electrode is connected with the data line, the grid electrode is connected with the grid line,
the grid line inputs high level, the signal of the data line is transmitted to the pixel electrode through the thin film transistor so as to charge a pixel capacitor formed by the pixel electrode and the common electrode, and a magnetic field generated by current on the pixel electrode enables the magneto-optical film to generate a magneto-optical effect so as to change the intensity of emergent light of the array substrate.
2. The array substrate of claim 1, wherein the pixel electrode is a slit electrode, and the slit electrode is linear or curved.
3. A method for manufacturing an array substrate according to any one of claims 1-2, comprising the steps of:
forming a grid electrode, a grid line and a common electrode on a substrate;
forming a gate insulating layer covering the whole substrate on the gate and the gate line;
forming a source electrode and a drain electrode on the gate insulating layer, and a data line perpendicularly crossing the gate line;
forming a passivation layer, and forming a passivation layer through hole above the drain electrode;
forming a pixel electrode, wherein the pixel electrode is positioned in a pixel region formed by the grid line and the data line in a crossed manner, the pixel electrode is connected with the drain electrode through a first through hole on the passivation layer, and the pixel electrode is connected with the common electrode through a second through hole on the passivation layer;
a magneto-optical film is formed on the pixel electrode.
4. The method for manufacturing the array substrate according to claim 3, wherein the pixel electrode is a slit electrode, and the slit electrode is linear or curved.
5. A display device, comprising:
the first polarizing element is used for converting light rays into linearly polarized light;
the array substrate of any one of claims 1-2, used for deflecting the angle of the polarization direction of linearly polarized light emitted by the first polarizer;
and the second polarizing element is used for shielding or transmitting the linearly polarized light emitted by the array substrate.
6. The display device according to claim 5, wherein the first polarizing element is a polarizing plate.
7. The display device according to claim 6, wherein the second polarizing element is a polarizing plate, and a transmission axis direction of the second polarizing element is perpendicular to a transmission axis direction of the first polarizing element.
8. The display device according to claim 5, further comprising a color filter disposed between the array substrate and the second polarizing element.
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| CN112068339B (en) * | 2020-09-04 | 2022-04-22 | 昆山龙腾光电股份有限公司 | Display panel with switchable viewing angle and display device |
| CN115629495A (en) * | 2021-11-29 | 2023-01-20 | 荣耀终端有限公司 | Display panel and electronic device |
| CN117433400B (en) * | 2023-12-08 | 2024-04-30 | 上海奕瑞光电子科技股份有限公司 | Offset measurement method and device for mobile DR, electronic product and medium |
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| JP2002277826A (en) * | 2001-03-14 | 2002-09-25 | Fujitsu Ltd | Optical isolator and semiconductor-based optoelectronic integrated device |
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| JP2002277826A (en) * | 2001-03-14 | 2002-09-25 | Fujitsu Ltd | Optical isolator and semiconductor-based optoelectronic integrated device |
| CN203149240U (en) * | 2013-02-18 | 2013-08-21 | 胡雨航 | Reflection-type magneto-optical switch controlled by electric field |
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