CN111458940A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN111458940A CN111458940A CN202010408012.3A CN202010408012A CN111458940A CN 111458940 A CN111458940 A CN 111458940A CN 202010408012 A CN202010408012 A CN 202010408012A CN 111458940 A CN111458940 A CN 111458940A
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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
- G02F1/133345—Insulating layers
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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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
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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
- G02F1/134381—Hybrid switching mode, i.e. for applying an electric field with components parallel and orthogonal to the substrates
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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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13706—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering the liquid crystal having positive dielectric anisotropy
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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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13712—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering the liquid crystal having negative dielectric anisotropy
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- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Geometry (AREA)
- Liquid Crystal (AREA)
Abstract
The invention provides a display panel and a display device. The display panel comprises a first substrate and a second substrate, wherein the first substrate and the second substrate are mutually aligned to form an aligned cell gap, and liquid crystal is filled in the aligned cell gap; the first substrate comprises a first substrate, a first electrode, an insulating layer and a second electrode, wherein the first electrode, the insulating layer and the second electrode are sequentially stacked on the first substrate and close to the side of the second substrate; the second substrate comprises a second substrate and a plurality of third electrodes arranged on the second substrate and close to the first substrate; orthographic projections of the third electrodes on the first substrate and orthographic projections of the second electrodes on the first substrate are alternately arranged. The display panel improves the serious bright and dark stripe phenomenon during display, and improves the light transmittance during narrow-view-angle display, thereby improving the display brightness and improving the display effect.
Description
Technical Field
The invention belongs to the technical field of display, and particularly relates to a display panel and a display device.
Background
Liquid Crystal (L CD, &lTtTtransition = L "&gTt L &lTt/T &gTt acquired Crystal Display) is shown as one of the current mainstream semiconductor Display schemes, low power consumption, good quality and low cost, and excellent picture Display effect.
The conventional peep-proof mode is that a planar electrode is arranged on a color film substrate, and in the process of realizing narrow-view-angle display, voltage is applied to the planar electrode to enable the planar electrode and a grid strip electrode which is closer to the planar electrode to form an electric field, so that the deflection angle of liquid crystal is controlled, and the narrow-view-angle display is realized. However, a strong vertical electric field is formed between the planar electrode and the grid electrode, which causes a severe bright and dark stripe phenomenon (as shown in fig. 1) in the display area, and the transmittance is reduced, thereby seriously affecting the display effect.
Disclosure of Invention
The invention provides a display panel and a display device, aiming at the problems that the existing ADS mode liquid crystal display product has serious bright and dark stripe phenomenon when realizing narrow visual angle display, has low transmittance and influences the display effect. The display panel improves the serious bright and dark stripe phenomenon during display, and improves the light transmittance during narrow-view-angle display, thereby improving the display brightness and improving the display effect.
The invention provides a display panel, which comprises a first substrate and a second substrate, wherein the first substrate and the second substrate are mutually aligned to form an aligned cell gap, and liquid crystal is filled in the aligned cell gap; the first substrate comprises a first substrate, a first electrode, an insulating layer and a second electrode, wherein the first electrode, the insulating layer and the second electrode are sequentially stacked on the first substrate and close to the side of the second substrate; the second substrate comprises a second substrate and a plurality of third electrodes arranged on the second substrate and close to the first substrate; orthographic projections of the third electrodes on the first substrate and orthographic projections of the second electrodes on the first substrate are alternately arranged.
Optionally, the third electrode and the second electrode are both strip-shaped electrodes, the third electrode and the second electrode are parallel to each other, and the third electrode and the second electrode are sequentially and alternately arranged along a first direction perpendicular to the length direction of the third electrode and the second electrode.
Optionally, an orthographic projection of the third electrode on the first substrate and an orthographic projection of the second electrode on the first substrate do not overlap each other.
Optionally, an orthographic projection of the third electrode on the first substrate and an orthographic projection of the second electrode on the first substrate overlap each other at an interface edge of the two.
Optionally, the insulating layer is a strip having the same shape as the second electrode.
Optionally, an orthographic projection of the second electrode on the first substrate coincides with an orthographic projection of the insulating layer on the first substrate.
Optionally, an orthographic projection area of the insulating layer on the first substrate is larger than an orthographic projection area of the second electrode on the first substrate, and the orthographic projection of the insulating layer on the first substrate covers an orthographic projection of the second electrode on the first substrate.
Optionally, the first electrode is a planar electrode.
Optionally, the liquid crystal comprises a positive liquid crystal or a negative liquid crystal.
The invention also provides a display device comprising the display panel.
The invention has the beneficial effects that: compared with the traditional situation that the planar electrode is arranged on the color film substrate and the grid-shaped electrode close to the planar electrode and the array substrate on the array substrate form an electric field to realize narrow-view display and the traditional situation that the strip-shaped electrode is arranged on the color film substrate and the grid-shaped electrode close to the strip-shaped electrode is arranged on the array substrate and the grid-shaped electrode close to the strip-shaped electrode is arranged opposite to the grid-shaped electrode on the array substrate to form an electric field to realize narrow-view display, the electric field lines of the electric field formed between the third electrode and the second electrode are distributed in a certain inclined angle instead of being distributed perpendicular to the third electrode and the second electrode, so that a stronger vertical electric field can be prevented from being formed between the third electrode and the second electrode, and under the action of the electric field formed by the third electrode and the second electrode, the situation that the deflection angle of liquid crystal molecules under the action of the stronger vertical electric field is smaller, the liquid crystal molecules can deflect at a large angle, so that backlight light can penetrate a large amount, the phenomenon of serious bright and dark stripes when the display panel displays is improved, meanwhile, the light transmittance of the display panel when the display panel displays at a narrow viewing angle is improved, the display brightness of the display panel is improved, and the display effect of the display panel is improved. In addition, for the display panel which adopts the frame turning principle to display, the design that the orthographic projections of the third electrodes and the orthographic projections of the second electrodes on the first substrate are alternately arranged can also enable the display brightness of positive and negative frames to be more consistent, so that the bad phenomenon of the flicker of the positive and negative frames is weakened.
According to the display device provided by the invention, the display effect of the display device is improved and the display power consumption of the display device is reduced by adopting the display panel.
Drawings
FIG. 1 is a schematic diagram of a dark and bright fringe phenomenon occurring when an ADS liquid crystal display product displays at a narrow viewing angle;
FIG. 2 is a schematic diagram of a bright and dark stripe phenomenon occurring when another ADS liquid crystal display product is displayed at a narrow viewing angle;
FIG. 3 is a schematic cross-sectional view illustrating a display panel according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating the deflection of liquid crystal molecules when the display panel in FIG. 3 realizes a narrow viewing angle display;
FIG. 5 is a graph of light transmittance when the display panel in FIG. 3 realizes narrow viewing angle display;
FIG. 6 is a schematic diagram illustrating a bright-dark stripe phenomenon occurring when the display panel in FIG. 3 realizes a narrow viewing angle display;
FIG. 7 is a schematic cross-sectional view illustrating another display panel according to an embodiment of the present invention;
fig. 8 is a schematic cross-sectional view illustrating a structure of another display panel according to an embodiment of the invention.
Wherein the reference numerals are:
1. the liquid crystal display panel comprises a first substrate, a first electrode, a first base, a second electrode, an insulating layer, a first substrate, a second substrate, a first electrode, a second substrate, a first substrate, a second substrate, a liquid crystal layer, a third electrode, a liquid crystal layer, a first direction L, a middle line and a second direction P.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, a display panel and a display device of the present invention are described in further detail below with reference to the accompanying drawings and the detailed description.
For an ADS (Advanced Super Dimension Switch) mode liquid crystal display product, another conventional peep-proof implementation mode is to set a strip electrode on a color film substrate, where the strip electrode is opposite to a grid strip electrode on an array substrate, and in the process of implementing narrow viewing angle display, a voltage is applied to the strip electrode, so that the strip electrode and the grid strip electrode on the array substrate closer to the strip electrode form an electric field, and the liquid crystal deflection angle is controlled, thereby implementing narrow viewing angle display. However, a strong vertical electric field is formed between the strip-shaped electrode and the grid strip-shaped electrode on the array substrate, and the deflection angle of the liquid crystal molecules under the action of the vertical electric field is small, so that the backlight light transmittance is low, and thus a severe bright and dark stripe phenomenon (as shown in fig. 2) occurs when the display area displays, the transmittance is reduced, and the display effect is seriously affected.
Aiming at the problems that the narrow viewing angle display of the ADS mode liquid crystal display product has serious bright and dark stripe phenomenon, low transmittance and influence on the display effect, the embodiment of the invention provides a display panel, as shown in FIG. 3, comprising a first substrate 1 and a second substrate 2, wherein the first substrate 1 and the second substrate 2 are mutually aligned to form a cell gap, and the cell gap is filled with liquid crystal 3; the first substrate 1 comprises a first substrate 11, a first electrode 12, an insulating layer 13 and a second electrode 14 which are sequentially stacked on the first substrate 11 at the side close to the second substrate 2, wherein the second electrode 14 comprises a plurality of electrodes; the second substrate 2 comprises a second base 21 and a plurality of third electrodes 22 arranged on the side of the second base 21 close to the first substrate 1; the orthographic projections of the third electrodes 22 on the first substrate 11 are alternately arranged with the orthographic projections of the second electrodes 14 on the first substrate 11.
The first electrode 12 is a common electrode, the second electrode 14 is a pixel electrode, and an electric field formed between the first electrode 12 and the second electrode 14 can deflect liquid crystal molecules, so that display of the display panel in a wide viewing angle range is realized. A voltage can be applied to the third electrode 22, so that an electric field capable of deflecting the liquid crystal molecules is formed between the third electrode 22 and the second electrode 14, thereby realizing the narrow viewing angle display of the display panel. The larger the voltage applied to the third electrode 22, the smaller the viewing angle range in which narrow viewing angle display can be achieved. Of course, the first electrode 12 may be a pixel electrode, and the second electrode 14 may be a common electrode.
In this embodiment, other structures required for the display panel to realize normal display are conventionally arranged, and the other structures are not improved here, so that detailed description is omitted.
By alternately arranging the orthogonal projections of the third electrodes 22 and the second electrodes 14 on the first substrate 11, compared with the conventional case where the planar electrodes are disposed on the color filter substrate and the grid-shaped electrodes adjacent to the planar electrodes on the array substrate form an electric field to realize narrow-viewing angle display, and the conventional case where the strip-shaped electrodes are disposed on the color filter substrate and the grid-shaped electrodes adjacent to the planar electrodes on the array substrate are oppositely disposed to form an electric field to realize narrow-viewing angle display, since the third electrodes 22 and the second electrodes 14 are alternately arranged, electric field lines of the electric field formed between the third electrodes 22 and the second electrodes 14 are inclined at a certain angle rather than being perpendicular to the third electrodes 22 and the second electrodes 14, so that a stronger vertical electric field can be prevented from being formed between the third electrodes 22 and the second electrodes 14, and compared with the case where the liquid crystal molecules have a smaller deflection angle under the action of the stronger vertical electric field, under the action of the electric field formed by the third electrode 22 and the second electrode 14, the liquid crystal molecules can deflect at a large angle, so that a large amount of backlight light can penetrate, the phenomenon of serious bright and dark stripes when the display panel displays is improved, meanwhile, the light transmittance of the display panel when the display panel displays at a narrow viewing angle is also improved, and the display brightness and the display effect of the display panel are improved. In addition, for the display panel which displays by adopting the frame inversion principle, the design that the orthographic projections of the third electrodes 22 and the orthographic projections of the second electrodes 14 on the first substrate 11 are alternately arranged can further make the display brightness of the positive and negative frames more consistent, thereby weakening the bad phenomenon of the flicker of the positive and negative frames.
Preferably, in the present embodiment, the third electrodes 22 and the second electrodes 14 are both strip-shaped electrodes, the third electrodes 22 and the second electrodes 14 are parallel to each other, and the third electrodes 22 and the second electrodes 14 are sequentially and alternately arranged along a first direction L perpendicular to the length direction thereof, the first electrodes 12 are planar electrodes, that is, in the present embodiment, the pixel electrodes are grid-shaped electrodes, and the common electrodes are planar electrodes, so that the display of the display panel in a wide viewing angle range can be better achieved, that is, the display of the ADS (Advanced Super Dimension switching) mode of the display panel can be better achieved, as shown in fig. 4-6, the arrangement described above, the third electrodes 22 and the second electrodes 14 are alternately arranged along the first direction L, so that the electric field lines of the electric field formed between the third electrodes 22 and the second electrodes 14 form an acute angle with the first direction L, that the electric field lines of the electric field formed between the third electrodes 22 and the second electrodes 14 form an acute angle, so that the second electrode 14 form an acute angle with the negative electric field, the vertical display frame, and the vertical display light display panel can be further improved, and the brightness of the display panel can be improved, and the display panel can be further, the display panel can be improved when the display panel is formed by the negative display panel display frame display effect of the vertical display panel is reduced.
As shown in fig. 4 and 5, only in the middle line P of the second electrode 14 perpendicular to the first direction L, the electric field between the third electrode 22 and the second electrode 14 is weakest, the liquid crystal molecule deflection angle at the middle line P is smaller, the light transmittance is lower, corresponding to the low valley position of the light transmittance curve in fig. 5, and in the region other than the middle line P of the second electrode 14, the electric field between the third electrode 22 and the second electrode 14 is stronger, the liquid crystal molecule deflection angle at these regions is larger, the light transmittance is higher, corresponding to the peak position of the light transmittance curve in fig. 5, from the whole display brightness of the display panel in fig. 6, the region with lower light transmittance occupies a smaller area, and the region with higher light transmittance occupies a larger area, so that the streak phenomenon is hardly seen in the whole image display, and the display brightness of the display panel is improved.
In this embodiment, an orthogonal projection of the third electrode 22 on the first substrate 11 and an orthogonal projection of the second electrode 14 on the first substrate 11 do not overlap each other. So set up, do not have between third electrode 22 and the second electrode 14 just to the region to thoroughly avoid forming perpendicular electric field between third electrode 22 and the second electrode 14, and then can improve this display panel better and appear bright and dark line phenomenon when realizing narrow visual angle and show, and can further improve the light transmittance of this display panel when narrow visual angle shows.
Preferably, in this embodiment, the insulating layer 13 is a stripe shape having the same shape as the second electrode 14. An orthographic projection of the second electrode 14 on the first substrate 11 coincides with an orthographic projection of the insulating layer 13 on the first substrate 11. The insulating layer 13 is arranged in such a way that the first electrode 12 and the second electrode 14 form a fringe electric field at the edge of the second electrode 14, and the fringe electric field can deflect the liquid crystal molecules at the edge of the second electrode 14, so that the display power consumption of the display panel can be reduced while the normal display of the display panel is realized; meanwhile, the liquid crystal molecules at the edge of the second electrode 14 deflect, so that the transmittance of light in the region can be effectively improved while display is realized, and therefore, under the condition of narrow-view-angle display with the same display brightness at the same view angle, the voltage applied to the third electrode 22 can be further reduced, and further, the efficient wide-narrow view-angle mode switching is realized.
In this embodiment, the thickness of the insulating layer 13 is in the range of 0.1 μm to 2 μm. This thickness setting of insulating layer 13 can reduce this display panel's the demonstration consumption better, promotes this display panel's light transmittance simultaneously.
In the present embodiment, the liquid crystal 3 includes a positive liquid crystal or a negative liquid crystal. In other words, in this embodiment, no matter whether the liquid crystal 3 is a positive liquid crystal or a negative liquid crystal, the above structure of the display panel can improve the severe bright and dark stripe phenomenon when the display panel displays, and can also improve the light transmittance of the display panel when the display panel displays at a narrow viewing angle, thereby improving the display brightness and improving the display effect.
Unlike the foregoing embodiments, as shown in fig. 7, an orthographic projection of the third electrode 22 on the first substrate 11 and an orthographic projection of the second electrode 14 on the first substrate 11 overlap each other at a boundary edge between the two.
That is, in this embodiment, the orthographic projections of the third electrode 22 and the second electrode 14 on the first substrate 11 are partially overlapped at the edges of the third electrode and the second electrode, and thus, the electric field formed between the third electrode 22 and the second electrode 14 is still mostly the electric field with the acute inclination angle, so that the severe bright and dark stripe phenomenon of the display panel during displaying can be improved, and meanwhile, the light transmittance of the display panel during displaying at a narrow viewing angle can be improved, thereby improving the display brightness and improving the display effect of the display panel.
Other structures of the display panel in this embodiment are the same as those in the above embodiments, and are not described herein again.
The embodiment of the present invention further provides a display panel, which is different from the foregoing embodiment, as shown in fig. 8, an orthographic projection area of the insulating layer 13 on the first substrate 11 is larger than an orthographic projection area of the second electrode 14 on the first substrate 11, and an orthographic projection of the insulating layer 13 on the first substrate 11 covers an orthographic projection of the second electrode 14 on the first substrate 11.
The insulating layer 13 is arranged in such a way that the first electrode 12 and the second electrode 14 can also form a fringe electric field at the edge of the second electrode 14, and the fringe electric field can deflect the liquid crystal molecules at the edge of the second electrode 14, so that the display power consumption of the display panel can be reduced while the normal display of the display panel is realized; meanwhile, the liquid crystal molecules at the edge of the second electrode 14 deflect, so that the transmittance of light in the region can be effectively improved while display is realized, and therefore, under the condition of narrow-view-angle display with the same display brightness at the same view angle, the voltage applied to the third electrode 22 can be further reduced, and further, the efficient wide-narrow view-angle mode switching is realized.
Other structural configurations of the display panel in this embodiment are the same as those in the above embodiments, and are not described herein again.
In the display panel provided in the embodiment of the invention, by alternately arranging the orthogonal projections of the third electrode and the second electrode on the first substrate, compared with the conventional case that the planar electrode is arranged on the color film substrate and the grid-strip-shaped electrode close to the planar electrode and the array substrate on the color film substrate forms an electric field to realize narrow-viewing-angle display, and the conventional case that the strip-shaped electrode is arranged on the color film substrate and the grid-strip-shaped electrode close to the array substrate on the array substrate is arranged opposite to the planar electrode to form an electric field to realize narrow-viewing-angle display, because the electric field lines of the electric field formed between the third electrode and the second electrode are inclined at a certain angle and are not distributed perpendicular to the third electrode and the second electrode, a stronger vertical electric field can be prevented from being formed between the third electrode and the second electrode, and under the action of the electric field formed by the third electrode and the second electrode, under the action of the stronger vertical electric field, the action of, the liquid crystal molecules can deflect at a large angle, so that backlight light can penetrate a large amount, the phenomenon of serious bright and dark stripes when the display panel displays is improved, meanwhile, the light transmittance of the display panel when the display panel displays at a narrow viewing angle is improved, the display brightness of the display panel is improved, and the display effect of the display panel is improved. In addition, for the display panel which adopts the frame turning principle to display, the design that the orthographic projections of the third electrodes and the orthographic projections of the second electrodes on the first substrate are alternately arranged can also enable the display brightness of positive and negative frames to be more consistent, so that the bad phenomenon of the flicker of the positive and negative frames is weakened.
An embodiment of the present invention further provides a display device, including the display panel in any of the above embodiments.
By adopting the display panel in any of the above embodiments, the display effect of the display device is improved and the display power consumption of the display device is reduced.
The display device provided by the invention can be any product or component with a display function, such as an L CD panel, a L CD television, a display, a mobile phone, a navigator and the like.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A display panel comprises a first substrate and a second substrate, wherein the first substrate and the second substrate are mutually aligned to form an aligned cell gap, and liquid crystal is filled in the aligned cell gap; the first substrate comprises a first substrate, a first electrode, an insulating layer and a second electrode, wherein the first electrode, the insulating layer and the second electrode are sequentially stacked on the first substrate and close to the side of the second substrate; the second substrate comprises a second substrate and a plurality of third electrodes arranged on the second substrate and close to the first substrate; wherein orthographic projections of the third electrodes on the first substrate and orthographic projections of the second electrodes on the first substrate are alternately arranged.
2. The display panel according to claim 1, wherein the third electrodes and the second electrodes are both strip-shaped electrodes, the third electrodes and the second electrodes are parallel to each other, and the third electrodes and the second electrodes are alternately arranged in sequence along a first direction perpendicular to a length direction of the third electrodes and the second electrodes.
3. The display panel according to claim 2, wherein an orthogonal projection of the third electrode on the first substrate does not overlap with an orthogonal projection of the second electrode on the first substrate.
4. The display panel according to claim 2, wherein an orthographic projection of the third electrode on the first substrate and an orthographic projection of the second electrode on the first substrate overlap each other at an interface edge therebetween.
5. The display panel according to any one of claims 2 to 4, wherein the insulating layer has a stripe shape having the same shape as the second electrode.
6. The display panel according to claim 5, wherein an orthogonal projection of the second electrode on the first substrate coincides with an orthogonal projection of the insulating layer on the first substrate.
7. The display panel according to claim 5, wherein an orthographic projection area of the insulating layer on the first substrate is larger than an orthographic projection area of the second electrode on the first substrate, and wherein the orthographic projection of the insulating layer on the first substrate covers an orthographic projection of the second electrode on the first substrate.
8. The display panel according to claim 1, wherein the first electrode is a planar electrode.
9. The display panel of claim 1, wherein the liquid crystal comprises a positive liquid crystal or a negative liquid crystal.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
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| CN202010408012.3A CN111458940A (en) | 2020-05-14 | 2020-05-14 | Display panel and display device |
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