CN114967245A - Display panel and display device - Google Patents
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- CN114967245A CN114967245A CN202210363136.3A CN202210363136A CN114967245A CN 114967245 A CN114967245 A CN 114967245A CN 202210363136 A CN202210363136 A CN 202210363136A CN 114967245 A CN114967245 A CN 114967245A
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- 239000000758 substrate Substances 0.000 claims abstract description 152
- 230000005684 electric field Effects 0.000 claims abstract description 39
- 239000004973 liquid crystal related substance Substances 0.000 claims description 34
- 239000011159 matrix material Substances 0.000 claims description 14
- 150000002500 ions Chemical class 0.000 abstract description 31
- 230000005012 migration Effects 0.000 abstract description 10
- 238000013508 migration Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 8
- 230000002776 aggregation Effects 0.000 abstract description 5
- 238000004220 aggregation Methods 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 3
- 239000010409 thin film Substances 0.000 description 8
- 230000009471 action Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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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
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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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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Geometry (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a display panel and a display device. The pixel electrode comprises a first substrate, a second substrate, a common electrode layer, a pixel electrode layer and an additional electrode; the second substrate is arranged opposite to the first substrate; the common electrode layer is arranged on one side of the first substrate close to the second substrate; the pixel electrode layer is arranged on one side of the common electrode layer close to or far away from the first substrate and is insulated from the common electrode layer, and the pixel electrode layer comprises a plurality of pixel electrodes arranged at intervals; the additional electrode is arranged on one side, close to the first substrate, of the second substrate, the orthographic projection of the additional electrode on the pixel electrode layer is located between the adjacent pixel electrodes, and the orthographic projection of the additional electrode on the first substrate is at least partially overlapped with the orthographic projection of the common electrode layer on the first substrate. The invention can avoid the change of the electric field generated between the pixel electrode layer and the common electrode layer due to the migration and the aggregation of ions, effectively improves the phenomenon of line residue of the display panel and improves the display effect of the display panel.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and a display device having the same.
Background
With the development of the electro-optical and semiconductor technologies, liquid crystal displays have been developed vigorously. Among many Liquid Crystal displays, a Thin Film Transistor Liquid Crystal Display (TFT-LCD) having superior characteristics such as high space utilization efficiency, small size, high Display resolution, low power consumption, no radiation, and low electromagnetic interference has recently become the mainstream of the market. Since TFT-LCD is widely used in electronic products such as notebook computer, mobile phone and television, which are closely related to life, the requirement for image quality is higher and higher, and thus the improvement of image quality is always the target of continuous pursuit in related fields.
The Fringe Field Switching (FFS) technology is one of the technologies that have been developed in recent years and can improve the image quality of LCD, and can meet the requirements of high transmittance and large viewing angle. The FFS type liquid crystal display generates a fringe electric field through the pixel electrode and the common electrode, so that liquid crystal molecules between the electrodes and right above the electrodes can rotate and convert in the plane direction (parallel to the substrate), and the light transmission efficiency of a liquid crystal layer is improved.
However, in the existing FFS type lcd, because the liquid crystal layer has a large amount of ions, the ions migrate and gather under the action of the horizontal electric field, and further the electric field between the pixel electrode and the common electrode changes, so that the liquid crystal molecules cannot deflect according to a preset angle, and further the line remnant phenomenon is easily generated at the black-white boundary of the display screen.
Disclosure of Invention
Embodiments of the present invention provide a display panel and a display device, which can improve a line defect phenomenon of the display panel and improve a display effect of the display panel.
An embodiment of the present invention provides a display panel, which includes:
a first substrate;
a second substrate disposed opposite to the first substrate;
the common electrode layer is arranged on one side, close to the second substrate, of the first substrate;
the pixel electrode layer is arranged on one side, close to or far away from the first substrate, of the common electrode layer and is insulated from the common electrode layer, and the pixel electrode layer comprises a plurality of pixel electrodes arranged at intervals;
and the additional electrode is arranged on one side of the second substrate close to the first substrate, the orthographic projection of the additional electrode on the pixel electrode layer is positioned between the adjacent pixel electrodes, and the orthographic projection of the additional electrode on the first substrate is at least partially overlapped with the orthographic projection of the common electrode layer on the first substrate.
In an embodiment of the invention, the display panel further includes a black matrix layer disposed between the second substrate and the additional electrode, and an orthogonal projection of the additional electrode on the second substrate is located within a coverage of an orthogonal projection of the black matrix layer on the second substrate.
In an embodiment of the invention, the black matrix layer includes a plurality of openings, and the display panel further includes a plurality of color resist blocks, one of the color resist blocks is disposed in one of the openings, and one of the color resist blocks is disposed corresponding to one of the pixel electrodes;
the orthographic projection of the additional electrode on the second substrate and the orthographic projection of the color resistance block on the second substrate are arranged at intervals, or the orthographic projection of the additional electrode on the second substrate and the orthographic projection of the color resistance block on the second substrate are partially overlapped.
In an embodiment of the invention, an orthogonal projection of the additional electrode on the first substrate is spaced from an orthogonal projection of the pixel electrode on the first substrate.
In one embodiment of the present invention, a distance between an orthogonal projection of the additional electrode on the first substrate and an orthogonal projection of the pixel electrode on the first substrate is greater than or equal to 3 micrometers.
In an embodiment of the invention, an orthogonal projection of the additional electrode on the pixel electrode layer is disposed around each of the pixel electrodes.
In an embodiment of the invention, the additional electrode is configured to apply an additional voltage signal to generate an additional electric field between the additional electrode and the common electrode layer, and the additional electric field is perpendicular to the first substrate or the second substrate, and the additional voltage signal includes a constant voltage signal.
In one embodiment of the present invention, the common electrode layer is used for loading a common voltage signal, and an absolute value of a difference between the additional voltage signal and the common voltage signal is greater than or equal to 1V.
In an embodiment of the present invention, the display panel further includes a liquid crystal layer, the liquid crystal layer is disposed between the additional electrode and the pixel electrode layer or between the additional electrode and the common electrode layer, and the liquid crystal layer includes liquid crystal molecules, an initial alignment direction of the liquid crystal molecules is parallel to the first substrate or the second substrate, and the liquid crystal molecules include negative liquid crystal.
According to the above object, an embodiment of the present invention further provides a display device, which includes a backlight module and the display panel, wherein the backlight module is disposed on a side of the first substrate away from the second substrate.
The invention has the beneficial effects that: in the invention, the electric field generated between the pixel electrode layer and the common electrode layer comprises an electric field in the horizontal direction, so that ions between the first substrate and the second substrate are subjected to action force in the horizontal direction and migrate in the horizontal direction, the invention forms an additional electrode on one side of the second substrate close to the first substrate, the additional electrode and the common electrode layer have an overlapped part, further an electric field in the direction vertical to the first substrate or the second substrate can be formed between the additional electrode and the common electrode layer, further the electric field in the vertical direction can apply action force in the vertical direction to the ions, so as to play a role in stabilizing the ions, reduce the probability of horizontal migration of the ions, further avoid the change of the electric field generated between the pixel electrode layer and the common electrode layer due to ion migration and aggregation, and effectively improve the line residual phenomenon of the display panel, the display effect of the display panel is improved.
Drawings
The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with the accompanying drawings.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an electric field distribution of a display panel according to an embodiment of the present invention;
fig. 3 is a schematic top view of an additional electrode and a pixel electrode according to an embodiment of the present invention;
fig. 4 is a schematic top view of an additional electrode and a pixel electrode according to an embodiment of the present invention;
fig. 5 is another schematic structural diagram of a display panel according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. 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 following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.
Referring to fig. 1, the display panel includes a first substrate 11, a second substrate 21, a common electrode layer 12, a pixel electrode layer 13, and an additional electrode 22.
Wherein, the first substrate 11 is arranged opposite to the second substrate 21; the common electrode layer 12 is disposed on one side of the first substrate 11 close to the second substrate 21; the pixel electrode layer 13 is arranged on one side of the common electrode layer 12 close to or far from the first substrate 11 and is insulated from the common electrode layer 12, and the pixel electrode layer 13 comprises a plurality of pixel electrodes 131 arranged at intervals; the additional electrode 22 is disposed on one side of the second substrate 21 close to the first substrate 11, an orthogonal projection of the additional electrode 22 on the pixel electrode layer 13 is located between the adjacent pixel electrodes 131, and an orthogonal projection of the additional electrode 22 on the first substrate 11 at least partially overlaps an orthogonal projection of the common electrode layer 12 on the first substrate 11.
In the implementation and application process, because the electric field generated between the pixel electrode layer 13 and the common electrode layer 12 includes the electric field in the horizontal direction, ions between the first substrate 11 and the second substrate 21 can be subjected to the action force in the horizontal direction, and can migrate in the horizontal direction, in the embodiment of the invention, the additional electrode 22 is formed on one side of the second substrate 21 close to the first substrate 11, and the additional electrode 22 and the common electrode layer 12 have an overlapping part, so that an electric field in the direction perpendicular to the first substrate 11 or the second substrate 21 can be formed between the additional electrode 22 and the common electrode layer 12, and further, the electric field in the vertical direction can apply the action force in the vertical direction to the ions, so as to stabilize the ions, reduce the probability of the ions undergoing horizontal migration, and further, avoid the electric field generated between the pixel electrode layer 13 and the common electrode layer 12 from being changed due to the migration and aggregation of the ions, the line residue phenomenon of the display panel is effectively improved, and the display effect of the display panel is improved.
Further, in an embodiment of the invention, referring to fig. 1, the display panel includes a first substrate 11 and a second substrate 21 that are disposed opposite to each other, and the display panel further includes a thin film transistor layer 14, a common electrode layer 12, an insulating layer 15 and a pixel electrode layer 13 that are sequentially disposed on a side of the first substrate 11 close to the second substrate 21, a black matrix layer 23, a color resistance layer, a planarization layer 25 and an additional electrode 22 that are sequentially disposed on a side of the second substrate 21 close to the first substrate 11, and a liquid crystal layer 30 that is disposed between the first substrate 11 and the second substrate 21.
It can be understood that the display panel provided in the embodiment of the present invention only shows the structure shown in fig. 1, but is not limited thereto, the display panel further includes a sealant disposed between the first substrate 11 and the second substrate 21 and surrounding the liquid crystal layer 30, an alignment film disposed on the pixel electrode layer 13 near the second substrate 21, and an alignment film disposed on the additional electrode 22 near the first substrate 11, and the like, and the above structure can be implemented according to a conventional manner, and is not described herein again.
In the embodiment of the invention, the common electrode layer 12 is disposed on the thin-film transistor layer 14 over the whole surface, the insulating layer 15 covers the common electrode layer 12, and the pixel electrode layer 13 is disposed on the insulating layer 15 and includes a plurality of pixel electrodes 131 distributed at intervals.
It should be noted that the thin film transistor layer 14 includes a plurality of thin film transistors distributed on the first substrate 11, and a scan line and a data line, and each pixel electrode 131 is correspondingly connected to at least one thin film transistor, a gate of the thin film transistor is turned on under the control of the scan line, and a source and a drain transmit a voltage signal in the data line to the correspondingly connected pixel electrode 131, so as to load a pixel voltage signal to the pixel electrode 131. Further, the display panel further includes a common voltage signal line connected to the common electrode layer 12 to load a common voltage signal to the common electrode layer 12.
As shown in fig. 1 and fig. 2, when a voltage is applied to the pixel electrode 131 and the common electrode, a fringe electric field a is generated between the pixel electrode 131 and the common electrode layer 12 below the pixel electrode 131. Further, the liquid crystal layer 30 includes liquid crystal molecules 31, in the embodiment of the present invention, an initial alignment direction of the liquid crystal molecules 31 is a horizontal direction, that is, the initial alignment direction of the liquid crystal molecules 31 is a direction parallel to the first substrate 11 or the second substrate 21, and the liquid crystal molecules 31 are deflected by the driving of the fringe electric field a.
Optionally, the liquid crystal molecules 31 are negative liquid crystals to effectively increase the response time of the liquid crystal molecules 31, but the content of the ions 32 in the liquid crystal layer 30 is increased, and the ions 32 may be distributed in the liquid crystal layer 30 in a positive or negative polarity manner, and when the pixel electrode 131 and the common electrode layer 12 are applied with a voltage and generate the fringe electric field a, a horizontal acting force, i.e., a force parallel to the first substrate 11 or the second substrate 21, is applied to the ions 32 due to the existence of the horizontal electric field in the fringe electric field a, so that the ions 32 are moved and aggregated in a direction parallel to the first substrate 11 or the second substrate 21.
In summary, in the embodiment of the invention, the additional electrode 22 is disposed on the side of the planarization layer 25 close to the first substrate 11, and the orthographic projection of the additional electrode 22 on the pixel electrode layer 13 is located between the adjacent pixel electrodes 131, and further, the orthographic projection of the additional electrode 22 on the first substrate 11 is at least partially overlapped with the orthographic projection of the common electrode layer 12 on the first substrate 11. When the additional electrode 22 loads an additional voltage signal and the common electrode layer 12 loads a common voltage signal, an additional electric field B perpendicular to the direction of the first substrate 11 or the second substrate 21 can be generated between the additional electrode 22 and the common electrode layer 12, and the additional electric field B can apply an acting force perpendicular to the direction of the first substrate 11 and the direction of the second substrate 21 to the ions 32, so as to stabilize the ions 32, so that the ions 32 reaching the on-hook electric field B are not easy to move under the action of the horizontal electric field in the fringe electric field a, thereby reducing the probability that the ions 32 migrate and gather to change the fringe electric field, so that the liquid crystal molecules 31 can be shifted according to a preset angle under the action of the fringe electric field, effectively improving the line residual phenomenon of the display panel, and improving the display effect of the display panel.
Alternatively, the additional voltage signal applied to the additional electrode 22 may be a constant voltage signal, and the absolute value of the difference between the additional voltage signal and the common voltage signal is greater than 1V, so as to ensure the strength of the additional electric field B between the additional electrode 22 and the common electrode layer 12, and effectively prevent the ions 32 from migrating and accumulating.
Alternatively, the materials of the additional electrode 22 and the pixel electrode 131 may include an indium tin oxide material, and may also be other transparent conductive materials, which are not limited herein.
In the embodiment of the present invention, the orthographic projection of the additional electrode 22 on the first substrate 11 and the orthographic projection of the pixel electrode 131 on the first substrate 11 are both within the coverage of the orthographic projection of the common electrode layer 12 on the first substrate 11. In addition, the orthographic projection of the additional electrode 22 on the first substrate 11 is spaced from the orthographic projection of the pixel electrode 131 on the first substrate 11, and the distance between the orthographic projection of the additional electrode 22 on the first substrate 11 and the orthographic projection of the pixel electrode 131 on the first substrate 11 is greater than or equal to 3 micrometers.
Referring to fig. 3, the orthographic projections of the additional electrodes 22 on the first substrate 11 are located between the orthographic projections of the adjacent pixel electrodes 131 on the first substrate 11, that is, the number of the additional electrodes 22 is multiple, and the additional electrodes are distributed among the pixel electrodes 131 in an array along a first direction X and a second direction Y, wherein the first direction X is a direction of a short side of the pixel electrode 131, the second direction Y is a direction of a long side of the pixel electrode 131, and the additional electrodes 22 are located between adjacent long sides of two adjacent pixel electrodes 131. Alternatively, the length of each additional electrode 22 in the first direction X may be greater than or equal to 4 micrometers and less than or equal to 15 micrometers, and the length of the additional electrode 22 in the second direction Y may be equal to the length of the pixel electrode 131.
Further, referring to fig. 1, the black matrix layer 23 is disposed between the second substrate 21 and the additional electrode 22, the black matrix layer 23 includes a plurality of openings 231, the color resist layer includes a plurality of color resist blocks 24, each color resist block 24 is disposed in one of the openings 231, and each color resist block 24 is disposed in one of the pixel electrodes 131.
The orthographic projection of the additional electrode 22 on the second substrate 21 is within the coverage range of the orthographic projection of the black matrix layer 23 on the second substrate 21, and the arrangement of the additional electrode 22 does not affect the light emission of the display panel.
In this embodiment, the orthogonal projection of the additional electrode 22 on the second substrate 21 is within the coverage of the orthogonal projection of the adjacent color resist block 24 on the second substrate 21, and the orthogonal projection of the additional electrode 22 on the second substrate 21 is spaced from the orthogonal projection of the color resist block 24 on the second substrate 21.
In summary, in the embodiment of the present invention, the additional electrode 22 is formed on the side of the second substrate 21 close to the first substrate 11, and the additional electrode 22 and the common electrode layer 12 have an overlapping portion, so that an electric field perpendicular to the direction of the first substrate 11 or the second substrate 21 can be formed between the additional electrode 22 and the common electrode layer 12, and then the electric field in the perpendicular direction can apply an acting force in the perpendicular direction to the ions, so as to stabilize the ions, reduce the probability of horizontal migration of the ions, and further prevent the electric field generated between the pixel electrode layer 13 and the common electrode layer 12 from being changed due to the migration and aggregation of the ions, thereby effectively improving the line remnant phenomenon of the display panel and improving the display effect of the display panel.
In another embodiment of the present invention, referring to fig. 1 and fig. 4, the difference between the present embodiment and the previous embodiment is the installation position of the additional electrode 22.
Specifically, in the present embodiment, the orthographic projection of the additional electrode 22 on the pixel electrode layer 13 is disposed around each pixel electrode 131, and at the same time, the orthographic projection of the additional electrode 22 on the first substrate 11 is disposed at an interval from the orthographic projection of each pixel electrode 131 on the first substrate 11.
In summary, in the embodiment of the present invention, the additional electrode 22 is formed on the side of the second substrate 21 close to the first substrate 11, and the additional electrode 22 and the common electrode layer 12 have an overlapping portion, so that an electric field perpendicular to the direction of the first substrate 11 or the second substrate 21 can be formed between the additional electrode 22 and the common electrode layer 12, and then the electric field in the perpendicular direction can apply an acting force in the perpendicular direction to the ions, so as to stabilize the ions, reduce the probability of horizontal migration of the ions, and further prevent the electric field generated between the pixel electrode layer 13 and the common electrode layer 12 from being changed due to the migration and aggregation of the ions, thereby effectively improving the line remnant phenomenon of the display panel and improving the display effect of the display panel. Compared with the previous embodiment, the range of the electric field between the additional electrode 22 and the common electrode layer 12 is increased in the present embodiment, so that the probability of horizontal migration of ions can be further reduced, the line remnant phenomenon of the display panel can be further improved, and the display effect of the display panel can be further improved.
It should be noted that, in the embodiment of the present invention, the black matrix layer 23 includes a plurality of openings 231, and each color block 24 is disposed in a corresponding one of the openings 231, in other embodiments of the present invention, each color block 24 may be disposed in a corresponding one of the openings 231 and partially extend onto the adjacent black matrix layer 23, and further, an orthographic projection of the additional electrode 22 on the second substrate 21 overlaps with an orthographic projection of the adjacent color block 24 on the second substrate 21, as shown in fig. 5.
In addition, in other embodiments of the present invention, the positions of the common electrode layer 12 and the pixel electrode layer 13 may also be interchanged (not shown in the figure), that is, the pixel electrode layer 13 is disposed on the thin-film transistor layer 14, the insulating layer 15 covers the pixel electrode layer 13, and the common electrode layer 12 is disposed on the insulating layer 15.
Further, in the method for manufacturing a display panel according to the embodiment of the present invention, after the black matrix layer 23, the plurality of color resist blocks 24, and the flat layer 25 are sequentially formed on the second substrate 21, a masking process may be added to form a transparent conductive film on the flat layer 25, and the additional electrode 22 is obtained through patterning, wherein an orthographic projection of the additional electrode 22 on the first substrate 11 is located between orthographic projections of the pixel electrode 131 on the first substrate 11, the orthographic projection of the additional electrode 22 on the first substrate 11 and the orthographic projection of the pixel electrode 131 on the first substrate 11 are spaced apart, and the orthographic projection of the additional electrode 22 on the second substrate 21 is located within a coverage range of the orthographic projection of the black matrix layer 23 on the second substrate 21.
The embodiment of the invention also provides a display device, which comprises a backlight module and a display panel, wherein the backlight module is arranged on one side of the first substrate 11 far away from the second substrate 21 so as to provide a backlight source for display.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The display panel and the display device provided by the embodiment of the present invention are described in detail above, and the principle and the embodiment of the present invention are explained in the present document by applying specific examples, and the description of the above embodiments is only used to help understanding the technical scheme and the core idea of the present invention; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A display panel, comprising:
a first substrate;
a second substrate disposed opposite to the first substrate;
the common electrode layer is arranged on one side, close to the second substrate, of the first substrate;
the pixel electrode layer is arranged on one side, close to or far away from the first substrate, of the common electrode layer and is insulated from the common electrode layer, and the pixel electrode layer comprises a plurality of pixel electrodes arranged at intervals;
and the additional electrode is arranged on one side of the second substrate close to the first substrate, the orthographic projection of the additional electrode on the pixel electrode layer is positioned between the adjacent pixel electrodes, and the orthographic projection of the additional electrode on the first substrate is at least partially overlapped with the orthographic projection of the common electrode layer on the first substrate.
2. The display panel according to claim 1, wherein the display panel further comprises a black matrix layer disposed between the second substrate and the additional electrode, and an orthogonal projection of the additional electrode on the second substrate is within a coverage of an orthogonal projection of the black matrix layer on the second substrate.
3. The display panel of claim 2, wherein the black matrix layer comprises a plurality of openings, and the display panel further comprises a plurality of color resist blocks, one of the color resist blocks is disposed in one of the openings, and one of the color resist blocks is disposed in correspondence with one of the pixel electrodes;
the orthographic projection of the additional electrode on the second substrate and the orthographic projection of the color block on the second substrate are arranged at intervals, or the orthographic projection of the additional electrode on the second substrate and the orthographic projection of the color block on the second substrate are partially overlapped.
4. The display panel according to claim 1, wherein an orthogonal projection of the additional electrode on the first substrate is spaced from an orthogonal projection of the pixel electrode on the first substrate.
5. The display panel according to claim 4, wherein a distance between an orthographic projection of the additional electrode on the first substrate and an orthographic projection of the pixel electrode on the first substrate is greater than or equal to 3 μm.
6. The display panel according to claim 4, wherein an orthogonal projection of the additional electrode on the pixel electrode layer is provided around each of the pixel electrodes.
7. The display panel of claim 1, wherein the additional electrode is configured to apply an additional voltage signal to generate an additional electric field with the common electrode layer, and the additional electric field is perpendicular to the first substrate or the second substrate, and the additional voltage signal comprises a constant voltage signal.
8. The display panel according to claim 7, wherein the common electrode layer is configured to apply a common voltage signal, and an absolute value of a difference between the additional voltage signal and the common voltage signal is greater than or equal to 1V.
9. The display panel according to claim 1, wherein the display panel further comprises a liquid crystal layer disposed between the additional electrode and the pixel electrode layer or between the additional electrode and the common electrode layer, and the liquid crystal layer comprises liquid crystal molecules, an initial alignment direction of the liquid crystal molecules is parallel to the first substrate or the second substrate, and the liquid crystal molecules comprise negative liquid crystal.
10. A display device, comprising a backlight module and the display panel of any one of claims 1 to 9, wherein the backlight module is disposed on a side of the first substrate away from the second substrate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210363136.3A CN114967245A (en) | 2022-04-07 | 2022-04-07 | Display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210363136.3A CN114967245A (en) | 2022-04-07 | 2022-04-07 | Display panel and display device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115327808A (en) * | 2022-08-31 | 2022-11-11 | 厦门天马微电子有限公司 | Display panel and display device |
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