CN113759614A - Liquid crystal display panel and display device - Google Patents
Liquid crystal display panel and display device Download PDFInfo
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- CN113759614A CN113759614A CN202111050236.2A CN202111050236A CN113759614A CN 113759614 A CN113759614 A CN 113759614A CN 202111050236 A CN202111050236 A CN 202111050236A CN 113759614 A CN113759614 A CN 113759614A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 181
- 239000000758 substrate Substances 0.000 claims abstract description 95
- 239000000463 material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 20
- 238000010586 diagram Methods 0.000 description 25
- 238000004873 anchoring Methods 0.000 description 20
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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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment 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
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Abstract
The application discloses liquid crystal display panel and display device relates to and shows technical field, can improve the dark line that the boundary region of the adjacent domain of current multidomain liquid crystal display panel produced to optimize display effect. A liquid crystal display panel comprising: the color film substrate and the array substrate are oppositely arranged; each pixel region corresponding to the same color of the liquid crystal display panel comprises at least two domain regions, an alignment film on the color film substrate corresponding to one of the two adjacent domain regions has an alignment direction, an alignment film on the array substrate corresponding to the other domain region has an alignment direction, and the alignment directions of the alignment films corresponding to the two adjacent domain regions are parallel; at least one of the first electrode on the color film substrate and the second electrode on the array substrate corresponding to each domain region is provided with a slit.
Description
Technical Field
The application relates to the technical field of display, in particular to a liquid crystal display panel and a display device.
Background
The liquid crystal display panel has been widely applied to the display, and with the development of the display technology, the consumer market has higher and higher requirements for the wide viewing angle of the liquid crystal display. Therefore, in order to improve the viewing angle of the liquid crystal display panel, a multi-domain display mode is proposed, in which one pixel is divided into a plurality of regions, each region corresponds to a different alignment direction, and each region corresponds to one domain. Due to the fact that the alignment directions of adjacent domains in the multi-domain display mode are different, the rotation angles of the liquid crystal in different alignment directions are different, visual angle difference can be mutually compensated, and the display visual angle can be further expanded.
However, due to the different alignment directions between the adjacent domains in the multi-domain display mode, the rotation angle of the liquid crystal at the boundary position of the adjacent domains is not complete enough, which easily causes the generation of dark lines at the boundary area of the adjacent domains, and affects the display effect.
Disclosure of Invention
The embodiment of the application provides a liquid crystal display panel and a display device, which can improve dark lines generated in a boundary area of adjacent domains of the existing multi-domain liquid crystal display panel so as to optimize the display effect.
In a first aspect of the embodiments of the present application, a liquid crystal display panel is provided, including: the color film substrate and the array substrate are oppositely arranged;
each pixel region corresponding to the same color of the liquid crystal display panel comprises at least two domain regions, an alignment film on the color film substrate corresponding to one of the two adjacent domain regions has an alignment direction, an alignment film on the array substrate corresponding to the other domain region has an alignment direction, and the alignment directions of the alignment films corresponding to the two adjacent domain regions are parallel;
at least one of the first electrode on the color film substrate and the second electrode on the array substrate corresponding to each domain region is provided with a slit.
In some embodiments, the liquid crystal display panel further includes:
the liquid crystal layer is arranged between the array substrate and the color film substrate;
the liquid crystal layer includes a chiral liquid crystal material.
In some embodiments, an extending direction of the slit of the first electrode is parallel to an alignment direction of the alignment film on the color film substrate; and/or the presence of a gas in the gas,
the extending direction of the slit of the first electrode is vertical to the alignment direction of the alignment film on the array substrate; and/or the presence of a gas in the gas,
the extending direction of the slit of the second electrode is parallel to the alignment direction of the alignment film on the array substrate; and/or the presence of a gas in the gas,
the extending direction of the slit of the second electrode is vertical to the alignment direction of the alignment film on the color film substrate.
In some embodiments, the extending directions of the slits of the first electrode corresponding to two adjacent domain regions are perpendicular to each other; and/or the presence of a gas in the gas,
the extending directions of the slits of the second electrode corresponding to two adjacent domain areas are perpendicular to each other.
In some embodiments, the first electrode corresponding to one of the two adjacent domains is provided with the slit, and the second electrode corresponding to the other domain is provided with the slit.
In some embodiments, the extending directions of the slits of the first electrode corresponding to two adjacent domain regions are perpendicular to each other, and the slits are not provided in the second electrode; or the like, or, alternatively,
the extending directions of the slits of the second electrodes corresponding to two adjacent domain areas are perpendicular to each other, and the slits are not arranged on the first electrodes.
In some embodiments, the extending directions of the slits of the first electrode corresponding to two adjacent domain regions are perpendicular to each other, and the slit is provided in the second electrode corresponding to one of the two adjacent domain regions; or the like, or, alternatively,
the extending directions of the slits of the second electrodes corresponding to two adjacent domain areas are perpendicular to each other, and the slit is arranged on the first electrode corresponding to one of the two adjacent domain areas.
In some embodiments, the width of the slit ranges from 2 to 4 μm.
In some embodiments, each of the pixel regions includes 4 of the domain regions.
In a second aspect of the embodiments of the present application, there is provided a display device including:
the liquid crystal display panel according to the first aspect.
In the liquid crystal display panel and the display device provided by the embodiment of the application, the alignment film on the color film substrate corresponding to one of the two adjacent domain regions has an alignment direction, the alignment film on the array substrate corresponding to the other domain region has an alignment direction, and the alignment directions of the alignment films corresponding to the two adjacent domain regions are parallel. The liquid crystal display panel is characterized in that single-side alignment is arranged for liquid crystal molecules with screw pitches, the alignment directions of alignment films corresponding to two adjacent domain areas are parallel, and dark lines at the boundary positions of the two adjacent domain areas can be improved to a certain extent. The slits are formed in at least one of the first electrode on the color film substrate and the second electrode on the array substrate corresponding to each domain area, the first electrode and the second electrode can generate a vertical electric field for the liquid crystal layer, the slits can enable the first electrode and/or the second electrode to form strip-shaped comb electrodes, the strip-shaped comb electrodes can play an anchoring role for liquid crystal molecules under the action of the vertical electric field, and anchoring force for the liquid crystal molecules can be further enhanced on the basis of the alignment direction of the alignment film. The liquid crystal molecules at the boundary position of the two domain areas are acted by the anchoring force, the rotating angle and the rotating direction become definite, namely the rotating direction and the rotating angle of each domain area are followed, the dark line at the boundary position of the two domain areas can be greatly reduced or even eliminated, and the display effect of the liquid crystal display panel is further optimized.
Drawings
Fig. 1 is a schematic cross-sectional view illustrating an lcd panel according to an embodiment of the present disclosure;
fig. 2 is a schematic top view illustrating an lcd panel according to an embodiment of the present disclosure;
fig. 3 is a schematic view illustrating an alignment direction of a pixel region of a liquid crystal display panel according to an embodiment of the present disclosure;
FIG. 4 is a schematic view illustrating an alignment direction of a pixel region of another LCD panel according to an embodiment of the present disclosure;
fig. 5 is a schematic slit diagram of a pixel region of an lcd panel according to an embodiment of the present disclosure;
fig. 6 is a schematic diagram illustrating a liquid crystal molecular state of a pixel region of a liquid crystal display panel according to an embodiment of the present disclosure;
fig. 7 is a schematic slit diagram of a pixel region of another liquid crystal display panel according to an embodiment of the present disclosure;
fig. 8 is a schematic slit diagram of a pixel region of another liquid crystal display panel according to an embodiment of the present disclosure;
fig. 9 is a schematic slit diagram of a pixel region of another liquid crystal display panel according to an embodiment of the present disclosure;
fig. 10 is a schematic slit diagram of a pixel region of an lcd panel according to an embodiment of the present disclosure;
fig. 11 is a schematic slit diagram of a pixel region of another liquid crystal display panel according to an embodiment of the present disclosure;
fig. 12 is a schematic slit diagram of a pixel region of another liquid crystal display panel according to an embodiment of the present disclosure;
fig. 13 is a schematic slit diagram of a pixel region of another liquid crystal display panel according to an embodiment of the present disclosure;
fig. 14 is a schematic slit diagram of a pixel region of an lcd panel according to an embodiment of the present disclosure;
fig. 15 is a schematic slit diagram of a pixel region of another liquid crystal display panel according to an embodiment of the present disclosure;
fig. 16 is a schematic structural diagram of a display device according to an embodiment of the present application.
Detailed Description
In order to better understand the technical solutions provided by the embodiments of the present specification, the technical solutions of the embodiments of the present specification are described in detail below with reference to the drawings and specific embodiments, and it should be understood that the specific features in the embodiments and examples of the present specification are detailed descriptions of the technical solutions of the embodiments of the present specification, and are not limitations on the technical solutions of the embodiments of the present specification, and the technical features in the embodiments and examples of the present specification may be combined with each other without conflict.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. The term "two or more" includes the case of two or more.
The liquid crystal display panel has been widely applied to the display, and with the development of the display technology, the consumer market has higher and higher requirements for the wide viewing angle of the liquid crystal display. Therefore, in order to improve the viewing angle of the liquid crystal display panel, a multi-domain display mode is proposed, in which one pixel is divided into a plurality of regions, each region corresponds to a different alignment direction, and each region corresponds to one domain. Due to the fact that the alignment directions of adjacent domains in the multi-domain display mode are different, the rotation angles of the liquid crystal in different alignment directions are different, visual angle difference can be mutually compensated, and the display visual angle can be further expanded. However, due to the different alignment directions between the adjacent domains in the multi-domain display mode, the rotation angle of the liquid crystal at the boundary position of the adjacent domains is not complete enough, which easily causes the generation of dark lines at the boundary area of the adjacent domains, and affects the display effect.
In view of this, embodiments of the present disclosure provide a liquid crystal display panel and a display device, which can improve dark lines generated in a boundary region between adjacent domains of a conventional multi-domain liquid crystal display panel to optimize a display effect.
In a first aspect of the embodiments of the present application, a liquid crystal display panel is provided, and fig. 1 is a schematic cross-sectional structure diagram of the liquid crystal display panel provided in the embodiments of the present application. As shown in fig. 1, the liquid crystal display panel provided in the embodiment of the present application includes: the color film substrate 100 comprises a first substrate 110, a first electrode 120 and an alignment film 101, and the first electrode 120 is arranged between the first substrate 110 and the alignment film 101; the array substrate 200 includes a second substrate 210, a second electrode 220, and an alignment film 101, and the second electrode 220 is disposed between the second substrate 210 and the alignment film 101. The color film substrate 100 and the alignment film 101 on the array substrate 200 are both disposed on the oppositely disposed surfaces, and a liquid crystal layer 300 is disposed between the alignment film 101 on the surface of the color film substrate 100 and the alignment film 101 on the surface of the array substrate 200. It should be noted that the color filter layer, the light-shielding pattern, the planarization layer, and the like may also be disposed on the color filter substrate 100, the array substrate 200 may also be disposed with a driving device, a driving circuit, and the like, and the detailed structures of the color filter substrate 100 and the array substrate 200 are not specifically limited in this embodiment. The first electrode 120 and the second electrode 220 located at two sides of the liquid crystal layer 300 are used for driving the rotation of the liquid crystal to generate an optical rotation effect, so that the liquid crystal layer 300 transmits light, does not transmit light, or transmits a part of light under the driving of the first electrode 120 and the second electrode 220, thereby achieving the effect of displaying a picture. The alignment films 101 disposed at both sides of the liquid crystal layer 300 serve to make the liquid crystal molecules have an initial angle by an alignment direction.
Fig. 2 is a schematic top view illustrating an lcd panel according to an embodiment of the present disclosure; fig. 3 is a schematic view illustrating an alignment direction of a pixel region of a liquid crystal display panel according to an embodiment of the present disclosure. In conjunction with fig. 2 and 3, the liquid crystal display panel may include a plurality of pixel regions 400 corresponding to different colors, for example, as shown in fig. 2, the liquid crystal display panel may include three color pixel regions 400, which are a red pixel region R, a green pixel region G, and a blue pixel region B, respectively, and the red pixel region R, the green pixel region G, and the blue pixel region B are repeatedly arranged in the display panel as a repeating unit, and the liquid crystal display panel may display a color picture with red, green, and blue as three primary colors. The color type of the pixel region 400 and the shape and arrangement of the pixel region 400 shown in fig. 2 are schematic and are not intended to be specific limitations of the embodiments of the present application. Each pixel region 400 of the liquid crystal display panel corresponding to the same color may include at least two domain regions 401, one pixel region 400 shown in fig. 3 includes 4 domain regions 401, fig. 3 is only schematic, one pixel region 400 may further include 3, 5, 6 domain regions 401, and the like, the more domain regions 401 included in one pixel region 400, the larger the viewing angle of the liquid crystal display panel is, and the specific setting may be performed according to the resolution requirement and the viewing angle parameter requirement of the liquid crystal display panel, which is not specifically limited in the present application. As shown in fig. 3, the color film pixel region 410 on the color film substrate 100 side and the array pixel region 420 on the array substrate 200 side are disposed opposite to each other to obtain the pixel region 400 of the liquid crystal display panel, the alignment direction of the alignment film 101 of the color film pixel region 410 is shown by an arrow in fig. 3, and the alignment direction of the alignment film 101 of the array substrate 200 is shown by an arrow in fig. 3. In the pixel region 400 of the liquid crystal display panel shown in fig. 3, the color filter substrate 100 and the array member 200 are bonded to each other, and the color filter pixel region 410 is located above and the array pixel region 420 is located below, so that the alignment direction of the alignment film 101 of the color filter substrate 100 is indicated by a dotted line. Fig. 4 is a schematic view of an alignment direction of a pixel region of another liquid crystal display panel according to an embodiment of the present disclosure. Fig. 3 and 4 show two alignment modes of the domain regions 401 in the pixel region 400. As shown in fig. 3 and 4, the alignment film 101 on the color filter substrate 100 corresponding to one of the two adjacent domain regions 401 has an alignment direction, the alignment film 101 on the array substrate 200 corresponding to the other domain region has an alignment direction, and the alignment directions of the alignment films 101 corresponding to the two adjacent domain regions 401 are parallel. It is easy to understand that the alignment films 101 with alignment directions of two adjacent domain regions 401 are located on different sides, that is, each domain region 401 has a single-sided alignment direction, although the alignment films 101 are disposed on two sides, only one side of the alignment film 101 corresponding to each domain region 401 has an alignment direction, and the alignment sides of two adjacent domain regions 401 are different, and the alignment directions of two adjacent domain regions 401 are parallel. The alignment mode with single-side alignment and parallel alignment directions of two adjacent domain regions 401 is suitable for liquid crystal molecules with a pitch, the liquid crystal molecules with the pitch can rotate by driving the molecules through the pitch under the condition of single-side alignment, and a light rotation effect of about 90 degrees is formed between the color film substrate 100 and the array substrate 200. And the alignment directions of the two adjacent domain regions 401 are arranged in parallel, and under the condition that the liquid crystal molecules with the screw pitches are aligned on different sides and on one side, the two adjacent domain regions 401 can form different liquid crystal rotation modes, so that different domain directions are formed. The liquid crystal molecules with the screw pitches are aligned on one side, the alignment directions of the alignment films 101 corresponding to the two adjacent domain areas 401 are parallel, and the dark lines at the boundary positions of the two adjacent domain areas can be improved to a certain extent.
At least one of the first electrode 120 on the color filter substrate 100 and the second electrode 220 on the array substrate 200 corresponding to each domain 401 is provided with a slit.
Fig. 5 is a schematic slit diagram of a pixel region of a liquid crystal display panel according to an embodiment of the present disclosure. In fig. 5, the first slit 121 is provided on the first electrode 120 corresponding to the alignment mode shown in fig. 3. The slits are formed by digging out partial areas of the first electrode 120 or the second electrode 220 to form a strip-shaped through groove penetrating through the thickness direction of the first electrode 120 or the second electrode 220, the arrangement of the slits enables the front electrode of the first electrode 120 or the second electrode 220 to be changed into a comb-shaped electrode or a strip-shaped electrode, the strip-shaped electrode can play an anchoring role on liquid crystal molecules, and anchoring force on the liquid crystal molecules can be further enhanced on the basis of the alignment direction of the alignment film. Fig. 5 is only an exemplary illustration, the first electrode 120 may be separately provided with a slit, the second electrode 220 may be separately provided with a slit, and both the first electrode 120 and the second electrode 220 may be provided with a slit, which is not limited in this embodiment of the present invention. The arrangement of the slits can reduce the resistance of the electrodes, and can improve the rotation response speed of the liquid crystal under the action of the vertical electric field of the first electrode and the second electrode, namely the response speed of the display picture of the liquid crystal display panel. The larger the number of slits, the faster the response speed, and the embodiment of the present application is not particularly limited.
For example, referring to fig. 3, liquid crystal molecules with a pitch can rotate by being driven by the pitch under the condition of single-side alignment, and a light rotation effect of about 90 ° is formed between the color film substrate and the array substrate. And the alignment directions of the two adjacent domain regions 401 are arranged in parallel, and under the condition that the liquid crystal molecules with the screw pitches are aligned on different sides and on one side, the two adjacent domain regions 401 can form different liquid crystal rotation modes, so that different domain directions are formed. However, since the alignment sides of the two adjacent domain regions 401 are different, and the liquid crystal molecules in the two adjacent domain regions 401 rotate in different directions in a parallel alignment direction, the liquid crystal molecules at the boundary position of the two domain regions 401 receive two alignment forces, the rotation angle of the liquid crystal molecules at the boundary position of the two domain regions 401 is not unique, and when the pixel region 400 is in a bright state, the rotation angle of the liquid crystal molecules at the boundary position of the two domain regions 401 is disturbed, so that the liquid crystal molecules at the boundary position of the two domain regions 401 cannot completely transmit light, that is, a dark line is generated at the boundary position of the two domain regions 401. Alternatively, when the pixel region 400 is in a dark state, the rotation angle of the liquid crystal molecules at the boundary position of the two domain regions 401 is disturbed, so that the liquid crystal molecules at the boundary position of the two domain regions 401 partially transmit light, that is, a bright line is generated at the boundary position of the two domain regions 401. The first electrode 120 and the second electrode 220 can generate a vertical electric field for the liquid crystal layer, the arrangement of the slits can enable strip-shaped comb-shaped electrodes to be formed on the first electrode 120 and/or the second electrode 220, the strip-shaped electrodes can perform an anchoring effect on liquid crystal molecules under the action of the vertical electric field, and anchoring force on the liquid crystal molecules can be further enhanced on the basis of the alignment direction of the alignment film. The liquid crystal molecules at the boundary position of the two domain areas 401 are acted by the anchoring force, the rotation angle and the rotation direction become definite, namely the rotation direction and the angle of each domain area are followed, the dark lines at the boundary position of the two domain areas 401 can be greatly reduced or even eliminated, and the display effect of the liquid crystal display panel is further optimized. The comb-shaped electrode and the strip-shaped electrode are both in the shape of electrodes formed by arranging slits, and the present application is not particularly limited.
In the liquid crystal display panel provided in the embodiment of the application, the alignment film 101 on the color film substrate 100 corresponding to one of the two adjacent domain regions 401 has an alignment direction, the alignment film 101 on the array substrate 200 corresponding to the other domain region has an alignment direction, and the alignment directions of the alignment films 101 corresponding to the two adjacent domain regions 401 are parallel. The liquid crystal molecules with the screw pitches are aligned on one side, the alignment directions of the alignment films 101 corresponding to the two adjacent domain areas 401 are parallel, and the dark lines at the boundary positions of the two adjacent domain areas can be improved to a certain extent. By arranging the slits in at least one of the first electrode 120 on the color film substrate 100 and the second electrode 220 on the array substrate 200 corresponding to each domain area 401, the first electrode 120 and the second electrode 220 can generate a vertical electric field for the liquid crystal layer, and the slits can form strip-shaped comb-shaped electrodes or strip-shaped electrodes on the first electrode 120 and/or the second electrode 220, and the strip-shaped electrodes can anchor liquid crystal molecules under the action of the vertical electric field, so that the anchoring force for the liquid crystal molecules can be further enhanced on the basis of the alignment direction of the alignment film. The liquid crystal molecules at the boundary position of the two domain areas 401 are acted by the anchoring force, the rotation angle and the rotation direction become definite, namely the rotation direction and the angle of each domain area are followed, the dark lines at the boundary position of the two domain areas 401 can be greatly reduced or even eliminated, and the display effect of the liquid crystal display panel is further optimized.
In some embodiments, the liquid crystal layer 300 includes a chiral liquid crystal material. It is easily understood that the chiral liquid crystal molecules have a helical pitch, having an internal rotation structure. Fig. 6 is a schematic diagram illustrating a liquid crystal molecular state of a pixel region of a liquid crystal display panel according to an embodiment of the present disclosure. The liquid crystal molecule state of the pixel region in fig. 6 is compared with the state of the liquid crystal molecules in the cross section of the pixel region in fig. 3 along a-a', as shown in fig. 6, the chiral liquid crystal molecules tilt along the direction of the alignment force in the initial alignment of the single-side alignment force, when the first electrode and the second electrode are powered on to apply a vertical electric field to the chiral liquid crystal molecules, the chiral liquid crystal molecules easily form a 90 ° rotation azimuth angle under the effect of the pitch, so that the dark line at the boundary position of the adjacent domain regions 401 can be narrowed, and the effect of weakening the dark line can be achieved. Due to the fact that the alignment sides of the adjacent domain areas 401 are different, the rotation directions of 90-degree rotation force formed by the chiral liquid crystal are different, slits with appropriate sizes are arranged on the first electrode 120 and/or the second electrode 220 to form strip-shaped electrodes, and in combination with the vertical electric field effect, the anchoring force on the chiral liquid crystal molecules can be further enhanced, so that the chiral liquid crystal molecules of each domain area 401 can more easily form 90-degree rotation force azimuth angles of the respective rotation directions, dark lines at the boundary positions of the adjacent domain areas 401 can be further narrowed, the effect of weakening the dark lines is achieved, and the display effect of the liquid crystal display panel is optimized.
In some embodiments, the width of the slit is in the range of 2-4 μm, if the slit is too wide, the electrode bar of the electrode is too narrow, which tends to lack anchoring force to the liquid crystal, and if the slit is too narrow, process capability cannot be realized, which is a suitable range of 2-4 μm. Illustratively, the distance between two adjacent slits in the extending direction of the slits is 12.8 μm, and the thickness of the liquid crystal layer may be 3.2 μm. The width of the slit, the distance between two adjacent slits, the thickness of the liquid crystal layer, and the like may also be set according to the size and resolution of the specific liquid crystal display panel, and the embodiment of the present application is not particularly limited.
Illustratively, the alignment direction of the alignment film is formed by a photo-alignment process, which can achieve different alignment directions in each pixel region to obtain a plurality of domain regions. The possibility of the multi-domain display mode can be increased in the manufacturing process, and the resolution of the multi-domain display mode can be improved.
In some embodiments, the extending direction of the slit of the first electrode is parallel to the alignment direction of the alignment film on the color film substrate. When the slits are disposed on the first electrodes corresponding to the domain regions, since the slits form the stripe-shaped electrodes to anchor the liquid crystal molecules, if the slits and the alignment direction of the alignment film are located on the same side, i.e., both on the color filter substrate side, the extending direction and the alignment direction of the slits need to be the same, and thus the extending direction of the slits of the first electrodes is parallel to the alignment direction of the alignment film on the color filter substrate. The anchoring of the slits to the liquid crystal molecules can strengthen the alignment force of the alignment force to the liquid crystal molecules, and is beneficial to the chiral liquid crystal molecules to form 90-degree rotating force.
And/or the presence of a gas in the gas,
the extending direction of the slit of the first electrode is vertical to the alignment direction of the alignment film on the array substrate. When the first electrode corresponding to the domain region is provided with the slits, the alignment film on the array substrate of the same domain region has an alignment direction, the slits are different from the alignment direction, the alignment force of the alignment direction on the chiral liquid crystal molecules on the array substrate side enables the liquid crystal molecules to form 90-degree turning force, the angle between the liquid crystal molecules on the array substrate side and the liquid crystal molecules on the color film substrate side is different by 90 degrees, therefore, the extending direction of the slits of the first electrode on the color film substrate side needs to be vertical to the alignment direction of the alignment film on the array substrate, the slit-formed strip-shaped electrode can anchor the liquid crystal molecules on the color film substrate side, the alignment direction on the color film substrate side enables the liquid crystal molecules on the color film substrate side to form the alignment force, and the 90-degree turning force of the liquid crystal molecules can be enhanced.
And/or the presence of a gas in the gas,
the extending direction of the slit of the second electrode is parallel to the alignment direction of the alignment film on the array substrate. When the slits are disposed on the second electrode corresponding to the domain regions, since the slits form the strip-shaped electrodes to anchor the liquid crystal molecules, if the slits and the alignment direction of the alignment film are located on the same side, i.e., both are located on the array substrate side, the anchoring direction and the alignment direction of the slits need to be the same, and thus, the extending direction of the slits of the second electrode is parallel to the alignment direction of the alignment film on the array substrate. The anchoring of the slits to the liquid crystal molecules can strengthen the alignment force of the alignment force to the liquid crystal molecules, and is beneficial to the chiral liquid crystal molecules to form 90-degree rotating force.
And/or
The extending direction of the slit of the second electrode is vertical to the alignment direction of the alignment film on the color film substrate. When the second electrode corresponding to the domain region is provided with the slits, the alignment film on the color film substrate of the same domain region has an alignment direction, the slits and the alignment direction are different, the alignment force of the alignment direction on the chiral liquid crystal molecules on the color film substrate side enables the liquid crystal molecules to form 90-degree turning force, the angle between the liquid crystal molecules on the color film substrate side and the liquid crystal molecules on the array substrate side is 90 degrees, therefore, the extending direction of the slits of the second electrode on the array substrate side needs to be vertical to the alignment direction of the alignment film on the color film substrate, the slit-formed strip-shaped electrode can anchor the liquid crystal molecules on the array substrate side, the alignment direction on the array substrate forms the alignment force on the liquid crystal molecules on the array substrate side, and the liquid crystal molecules can be strengthened to form 90-degree turning force.
It should be noted that the slits of each domain may be independent, and do not affect or limit each other, as long as the alignment directions of two adjacent domain regions are parallel and the alignment sides are different.
In the liquid crystal display panel provided by the embodiment of the application, the alignment film on one side of the liquid crystal layer corresponding to each domain area has an alignment direction, and the first electrode and the second electrode on two sides of the liquid crystal molecule corresponding to each domain area may be provided with a slit on a single-side electrode, or the electrodes on two sides may be provided with slits, that is, the first electrode or the second electrode in the domain area is provided with a slit, or the first electrode and the second electrode in the domain area are provided with slits. The slits and the alignment direction of the same domain region are located on the same side of the liquid crystal layer, and the extending direction of the slits is parallel to the alignment direction, or the slits and the alignment direction of the same domain region are respectively located on two sides of the liquid crystal layer, and the extending direction of the slits is perpendicular to the alignment direction, or the slits are arranged on two sides of the liquid crystal layer, and the alignment direction is parallel to the extending direction of the slits on the same side with the alignment direction. The slit-formed strip-shaped electrodes can superpose the alignment force in the alignment direction on the anchoring effect of the liquid crystal molecules, so that the 90-degree rotation force formed by the chiral liquid crystal molecules can be enhanced.
In some embodiments, the extending directions of the slits of the first electrode corresponding to two adjacent domain regions are perpendicular to each other. If the slits are arranged on the first electrodes corresponding to the two adjacent domain areas, the extending directions of the slits of the first electrodes corresponding to the two adjacent domain areas are mutually perpendicular because the alignment directions of the two adjacent domain areas are parallel and the alignment sides are different.
And/or the presence of a gas in the gas,
the extending directions of the slits of the second electrodes corresponding to the two adjacent domain areas are perpendicular to each other. If the slits are arranged on the second electrodes corresponding to the two adjacent domain areas, the extending directions of the slits of the second electrodes corresponding to the two adjacent domain areas are mutually perpendicular because the alignment directions of the two adjacent domain areas are parallel and the alignment sides are different.
For example, fig. 7 is a schematic slit diagram of a pixel region of another liquid crystal display panel provided in an embodiment of the present application. As shown in fig. 7, the first electrode 120 and the second electrode 220 corresponding to each domain 401 are provided with slits, the extending directions of the first slits 121 corresponding to two adjacent domain areas 401 are perpendicular to each other, and the extending directions of the second slits 221 corresponding to two adjacent domain areas 401 are perpendicular to each other.
In some embodiments, the slits of the first electrode corresponding to two adjacent domain regions extend in directions perpendicular to each other, and the second electrode is not provided with slits. Fig. 8 is a schematic slit diagram of a pixel region of another liquid crystal display panel according to an embodiment of the present disclosure. As shown in fig. 8, the first electrode 120 corresponding to each domain 401 has a first slit 121 disposed thereon, and the second electrode 220 corresponding to each domain 401 has no slit disposed thereon.
In some embodiments, the extending directions of the slits of the first electrode corresponding to two adjacent domain regions are perpendicular to each other, and the second electrode corresponding to one of the two adjacent domain regions is provided with the slits. Fig. 9 is a schematic slit diagram of a pixel region of another liquid crystal display panel according to an embodiment of the present disclosure. As shown in fig. 9, the first electrode 120 corresponding to each domain 401 has a first slit 121 disposed thereon, and the second electrode 220 has a second slit 221 disposed in the spaced domain 401. Fig. 10 is a schematic slit diagram of a pixel region of a liquid crystal display panel according to an embodiment of the present disclosure. As shown in fig. 10, the first electrode 120 corresponding to each domain 401 has a first slit 121 disposed thereon, and the second electrode 220 has a second slit 221 disposed in the spaced domain 401. The extending directions of the second slits 221 corresponding to the domain regions 401 at intervals shown in fig. 9 and 10 are parallel to each other.
In some embodiments, the extending directions of the slits of the second electrode corresponding to two adjacent domain regions are perpendicular to each other, and the slits are not provided in the first electrode. Exemplarily, fig. 11 is a schematic slit diagram of a pixel region of another liquid crystal display panel provided in an embodiment of the present application. As shown in fig. 11, the second electrode 220 corresponding to each domain 401 has a second slit 221, and the first electrode 120 corresponding to each domain 401 has no slit.
In some embodiments, the extending directions of the slits of the second electrodes corresponding to two adjacent domain regions are perpendicular to each other, and the first electrode corresponding to one of the two adjacent domain regions is provided with the slit. Exemplarily, fig. 12 is a schematic slit diagram of a pixel region of another liquid crystal display panel provided in an embodiment of the present application. As shown in fig. 12, the second electrode 220 corresponding to each domain 401 is provided with a second slit 221, and the first electrode 120 is provided with a first slit 121 in the spaced domain 401. Fig. 13 is a schematic slit diagram of a pixel region of another liquid crystal display panel according to an embodiment of the present disclosure. As shown in fig. 13, the second electrode 220 corresponding to each domain 401 is provided with a second slit 221, and the first electrode 120 is provided with a first slit 121 in the spaced domain 401. The extending directions of the first slits 121 corresponding to the domain regions 401 at intervals shown in fig. 12 and 13 are parallel to each other.
According to the liquid crystal display panel provided by the embodiment of the application, the first electrode 120 corresponding to each domain area 401 is provided with the first slit 121, and/or the second electrode 220 corresponding to each domain area 401 is provided with the second slit 221, so that a suitable slit setting mode can be selected according to different resolutions and other display requirements, and the chiral liquid crystal molecules can be strengthened to form 90-degree turning force by utilizing the anchoring effect of the strip-shaped electrodes formed by the slits on the liquid crystal molecules.
In some embodiments, the first electrode corresponding to one of the two adjacent domain regions is provided with a slit, and the second electrode corresponding to the other domain region is provided with a slit. For example, fig. 14 is a schematic slit diagram of a pixel region of a liquid crystal display panel according to an embodiment of the present application; fig. 15 is a slit schematic diagram of a pixel region of another liquid crystal display panel according to an embodiment of the present disclosure. As shown in fig. 14 and 15, the first electrode 120 is provided with a first slit 121 in a spaced domain region 401, the second electrode 220 is provided with a second slit 221 in the spaced domain region 401, and the first slit 121 and the second slit 221 are respectively provided in two adjacent domain regions 401 to provide anchoring force for liquid crystal molecules, so that the chiral liquid crystal molecules can be strengthened to form 90 ° rotation force.
It should be noted that the arrangement of the slits shown in fig. 7-15 corresponds to the alignment mode shown in fig. 3, and each pixel region 400 includes 4 domain regions 401, which is only exemplary, and in a large-sized liquid crystal display panel, 4 domain regions 401 can achieve a wider viewing angle and can achieve a larger resolution.
In a second aspect of the embodiments of the present application, a display device is provided, and fig. 16 is a schematic structural diagram of the display device provided in the embodiments of the present application. As shown in fig. 16, a display device provided in an embodiment of the present application includes: the liquid crystal display panel 1000 as described in the first aspect.
In the display device provided in the embodiment of the application, the liquid crystal display panel 1000 is configured such that the alignment film 101 on the color film substrate 100 corresponding to one of the two adjacent domain regions 401 has an alignment direction, the alignment film 101 on the array substrate 200 corresponding to the other domain region has an alignment direction, and the alignment directions of the alignment films 101 corresponding to the two adjacent domain regions 401 are parallel. The liquid crystal molecules with the screw pitches are aligned on one side, the alignment directions of the alignment films 101 corresponding to the two adjacent domain areas 401 are parallel, and the dark lines at the boundary positions of the two adjacent domain areas can be improved to a certain extent. By arranging the slits in at least one of the first electrode 120 on the color film substrate 100 and the second electrode 220 on the array substrate 200 corresponding to each domain area 401, the first electrode 120 and the second electrode 220 can generate a vertical electric field for the liquid crystal layer, and the slits can form strip-shaped comb-shaped electrodes or strip-shaped electrodes on the first electrode 120 and/or the second electrode 220, and the strip-shaped electrodes can anchor liquid crystal molecules under the action of the vertical electric field, so that the anchoring force for the liquid crystal molecules can be further enhanced on the basis of the alignment direction of the alignment film. The liquid crystal molecules at the boundary position of the two domain areas 401 are acted by the anchoring force, the rotation angle and the rotation direction become definite, namely the rotation direction and the angle of each domain area are followed, the dark lines at the boundary position of the two domain areas 401 can be greatly reduced or even eliminated, and the display effect of the liquid crystal display panel is further optimized.
While preferred embodiments of the present specification have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all changes and modifications that fall within the scope of the specification.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present specification without departing from the spirit and scope of the specification. Thus, if such modifications and variations of the present specification fall within the scope of the claims of the present specification and their equivalents, the specification is intended to include such modifications and variations.
Claims (10)
1. A liquid crystal display panel, comprising: the color film substrate and the array substrate are oppositely arranged;
each pixel region corresponding to the same color of the liquid crystal display panel comprises at least two domain regions, an alignment film on the color film substrate corresponding to one of the two adjacent domain regions has an alignment direction, an alignment film on the array substrate corresponding to the other domain region has an alignment direction, and the alignment directions of the alignment films corresponding to the two adjacent domain regions are parallel;
at least one of the first electrode on the color film substrate and the second electrode on the array substrate corresponding to each domain region is provided with a slit.
2. The liquid crystal display panel according to claim 1, further comprising:
the liquid crystal layer is arranged between the array substrate and the color film substrate;
the liquid crystal layer includes a chiral liquid crystal material.
3. The lcd panel of claim 2, wherein the extending direction of the slit of the first electrode is parallel to the alignment direction of the alignment film on the color film substrate; and/or the presence of a gas in the gas,
the extending direction of the slit of the first electrode is vertical to the alignment direction of the alignment film on the array substrate; and/or the presence of a gas in the gas,
the extending direction of the slit of the second electrode is parallel to the alignment direction of the alignment film on the array substrate; and/or the presence of a gas in the gas,
the extending direction of the slit of the second electrode is vertical to the alignment direction of the alignment film on the color film substrate.
4. The liquid crystal display panel according to claim 3, wherein the extending directions of the slits of the first electrode corresponding to two adjacent domain regions are perpendicular to each other; and/or the presence of a gas in the gas,
the extending directions of the slits of the second electrode corresponding to two adjacent domain areas are perpendicular to each other.
5. The liquid crystal display panel according to claim 3, wherein the first electrode corresponding to one of the two adjacent domain regions is provided with the slit, and the second electrode corresponding to the other domain region is provided with the slit.
6. The liquid crystal display panel according to claim 4, wherein the slits of the first electrode corresponding to two adjacent domain regions extend in directions perpendicular to each other, and the second electrode is not provided with the slits; or the like, or, alternatively,
the extending directions of the slits of the second electrodes corresponding to two adjacent domain areas are perpendicular to each other, and the slits are not arranged on the first electrodes.
7. The liquid crystal display panel according to claim 4, wherein the extending directions of the slits of the first electrode corresponding to two adjacent domain regions are perpendicular to each other, and the slit is provided in the second electrode corresponding to one of the two adjacent domain regions; or the like, or, alternatively,
the extending directions of the slits of the second electrodes corresponding to two adjacent domain areas are perpendicular to each other, and the slit is arranged on the first electrode corresponding to one of the two adjacent domain areas.
8. The liquid crystal display panel of claim 1, wherein the slits have a width in the range of 2-4 μm.
9. The liquid crystal display panel according to any one of claims 1 to 8, wherein each of the pixel regions includes 4 of the domain regions.
10. A display device, comprising:
a liquid crystal display panel according to any one of claims 1 to 9.
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