CN111025694A - Display panel and display device - Google Patents
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- CN111025694A CN111025694A CN201911266639.3A CN201911266639A CN111025694A CN 111025694 A CN111025694 A CN 111025694A CN 201911266639 A CN201911266639 A CN 201911266639A CN 111025694 A CN111025694 A CN 111025694A
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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
- G02F1/1323—Arrangements for providing a switchable viewing angle
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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
A display panel and a display device are provided, the display panel comprises an array substrate, a color film substrate and a liquid crystal layer, wherein a plurality of first pixel units and a plurality of second pixel units are formed on the array substrate; a first pixel electrode, a second pixel electrode, a third pixel electrode and a fourth pixel electrode which do not comprise a first electrode strip, a second electrode strip, a third electrode strip and a fourth electrode strip respectively are arranged in the first pixel unit and the second pixel unit, the extending direction of the second electrode strip deviates a certain angle from the vertical direction to the first direction, and the extending direction of the fourth electrode strip deviates a certain angle from the vertical direction to the second direction; the color film substrate comprises a visual angle control electrode. The display panel and the display device design the extending directions of the second electrode strips and the fourth electrode strips of two different pixel units to be inclined towards opposite directions, so that the transmissivity of the display device is improved, the response time is short, the response speed is high, the contrast is improved, and the display effect of the display device is improved.
Description
Technical Field
The present invention relates to the field of liquid crystal display technologies, and in particular, to a display panel and a display device.
Background
The liquid crystal display panel has the advantages of good picture quality, small volume, light weight, low driving voltage, low power consumption, no radiation and relatively low manufacturing cost, and is dominant in the field of flat panel display.
With the continuous progress of the liquid crystal display technology, the viewing angle of the display has been widened from about 120 ° to over 160 °, and people want to effectively protect business confidentiality and personal privacy while enjoying the visual experience brought by a large viewing angle, so as to avoid business loss or embarrassment caused by the leakage of screen information. Therefore, in addition to the wide viewing angle, the display device is also required to have a function of switching between the wide viewing angle and the narrow viewing angle.
In order to achieve protection of commercial confidentiality and personal privacy, a blind technology can be adopted, but with this technology, switching to a wide viewing angle mode is impossible, and loss of brightness is severe, and at the same time, manufacturing cost is high, and it is difficult to meet use requirements.
Disclosure of Invention
The invention aims to provide a display panel and a display device capable of realizing wide and narrow visual angle switching.
The invention provides a display panel, which comprises an array substrate, a color film substrate arranged opposite to the array substrate and a liquid crystal layer positioned between the array substrate and the color film substrate, wherein a plurality of first pixel units and a plurality of second pixel units are formed on the array substrate in a limited manner by scanning lines and data lines, a first pixel electrode and a second pixel electrode are arranged in each first pixel unit, each second pixel unit is provided with a third pixel electrode and a fourth pixel electrode, or a first pixel electrode and a third pixel electrode are arranged in each first pixel unit, a second pixel electrode and a fourth pixel electrode are arranged in each second pixel unit, or a first pixel electrode and a fourth pixel electrode are arranged in each first pixel unit, and a second pixel electrode and a third pixel electrode are arranged in each second pixel unit;
the first pixel electrode comprises a first electrode strip, the second pixel electrode comprises a second electrode strip, the third pixel electrode comprises a third electrode strip, the fourth pixel electrode comprises a fourth electrode strip, the extending directions of the first electrode strip and the second electrode strip are crossed, the extending directions of the first electrode strip and the third electrode strip are the same, the extending direction of the second electrode strip is offset by a certain angle from the vertical direction to the first direction, and the extending direction of the fourth electrode strip is offset by a certain angle from the vertical direction to the second direction opposite to the first direction; the color film substrate comprises a visual angle control electrode, and the visual angle control electrode is used for receiving different voltage signals and switching the display panel between different display modes.
In one embodiment, the extending directions of the third electrode strips and the fourth electrode strips are crossed, the included angle between the second electrode strips and the vertical direction is a, and the included angle between the fourth electrode strips and the vertical direction is-a.
In one embodiment, the first pixel units and the second pixel units are alternately arranged along the longitudinal direction; or, the first pixel units and the second pixel units are alternately arranged along the transverse direction; or, the first pixel units and the second pixel units are arranged in a staggered mode.
In one embodiment, the first electrode strips and the third electrode strips are parallel to each other.
In one embodiment, the first electrode strips and the third electrode strips are parallel to the horizontal direction.
In an embodiment, the first pixel electrode further includes a fifth electrode strip, the second pixel electrode further includes a sixth electrode strip, two ends of the first electrode strip are respectively connected to the two fifth electrode strips, and two ends of the third electrode strip are respectively connected to the two sixth electrode strips.
In one embodiment, the extending direction of the fifth electrode bar is offset from the vertical direction to the second direction by a certain angle, and the extending direction of the sixth electrode bar is offset from the vertical direction to the first direction by a certain angle.
In one embodiment, an included angle between the fifth electrode strip and the horizontal direction is B, and an included angle between the sixth electrode strip and the horizontal direction is-B.
In one embodiment, the included angle between the second electrode strips and the horizontal direction is-80 °, and the included angle between the fourth electrode strips and the horizontal direction is 80 °.
The invention also provides a display device comprising the display panel.
According to the display panel and the display device, on one hand, as the pixel electrodes of the pixel units comprise the first pixel electrode and the second pixel electrode which have different extending directions, different voltages can be applied to the visual angle control electrodes, so that the display panel can be switched between a wide visual angle and a full narrow visual angle, various requirements of users can be met, and the display effect is good; meanwhile, the extending directions of the second electrode strips and the fourth electrode strips of the two different pixel units are designed to incline towards opposite directions, so that the transmissivity of the display device is improved, the response time is shortened, the response speed is increased, the contrast is improved, and the display effect of the display device is improved.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to a first embodiment of the invention.
Fig. 2 is a schematic cross-sectional view of the display panel shown in fig. 1 with a wide viewing angle.
Fig. 3 is a schematic cross-sectional view of the display panel shown in fig. 1 with a narrow viewing angle.
Fig. 4 is a graph illustrating a transmittance-voltage curve of the display panel shown in fig. 1.
Fig. 5 is a graph illustrating a contrast-angle curve of the display panel shown in fig. 1.
Fig. 6 is a schematic structural diagram of a display panel according to a second embodiment of the invention.
Fig. 7 is a schematic structural diagram of a pixel electrode of a display panel according to a third embodiment of the invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects of the present invention will be made with reference to the accompanying drawings and examples.
First embodiment
Referring to fig. 1 and fig. 2, a display panel according to a first embodiment of the present invention includes an array substrate 10, a color filter substrate 30 disposed opposite to the array substrate 10, and a liquid crystal layer 50 disposed between the array substrate 10 and the color filter substrate 30.
A plurality of first pixel units P1 and a plurality of second pixel units P2 are defined on the array substrate 10 by the scan lines 100 and the data lines 101. The array substrate 10 includes a first substrate 102, a thin film transistor (not shown), a common electrode 104, and a pixel electrode, where one pixel electrode and one thin film transistor are disposed in each pixel unit. A first pixel electrode 106a and a second pixel electrode 106b are disposed in each first pixel cell P1, a third pixel electrode 106c and a fourth pixel electrode 106d are disposed in each second pixel cell P2, the first pixel electrode 106a includes a first electrode stripe 1061, the second pixel electrode 106b includes a second electrode stripe 1062, the third pixel electrode 106c includes a third electrode stripe 1063, and the fourth pixel electrode 106d includes a fourth electrode stripe 1064. The first electrode stripes 1061 and the second electrode stripes 1062 extend in different directions, the third electrode stripes 1063 extend in different directions, and the fourth electrode stripes 1064 extend in different directions (that is, the first electrode stripes 1061 and the second electrode stripes 1062 extend in different directions, and the third electrode stripes 1063 and the fourth electrode stripes 1064 extend in different directions), the first electrode stripes 1061 and the third electrode stripes 1063 extend in substantially the same direction, the second electrode stripes 1062 extend in different directions, and the fourth electrode stripes 1064 extend in different directions. Specifically, the angle of the second electrode stripes 1062 offset toward the first direction may be equal to the angle of the fourth electrode stripes 1064 offset toward the second direction, that is, the included angle between the second electrode stripes 1062 and the vertical direction is a, and the included angle between the fourth electrode stripes 1064 and the vertical direction is-a. By setting the angle of the second electrode stripes 1062 offset toward the first direction to be equal to the angle of the fourth electrode stripes 1064 offset toward the second direction, the electric field of the display panel is more uniform and the transmittance is better. Specifically, the thin film transistor includes a gate electrode electrically connected to the corresponding scan line 100, a source electrode 1032 electrically connected to the corresponding data line 101, a drain electrode 1033 electrically connected to the corresponding pixel electrode, and a semiconductor layer 1035. In this embodiment, the common electrode 104 and the pixel electrode are located in different layers, an insulating layer 107 is interposed between the common electrode 104 and the pixel electrode, the pixel electrode is disposed above the common electrode 104, the pixel electrode is a slit-shaped electrode, and the common electrode 104 is a planar electrode covering the entire surface of the first substrate 102, but the invention is not limited thereto.
In the present embodiment, the first pixel cells P1 and the second pixel cells P2 are alternately arranged in the longitudinal direction. That is, the pixel unit in the nth row is the first pixel unit P1, the pixel unit in the (N + 1) th row is the second pixel unit P2, and N is a positive integer. It is understood that the first pixel unit P1 and the second pixel unit P2 may be alternately arranged in the lateral direction. That is, the pixel unit of the nth column is the first pixel unit P1, the pixel unit of the (N + 1) th column is the second pixel unit P2, and N is a positive integer. It is understood that the first pixel unit P1 and the second pixel unit P2 may be alternatively disposed, that is, the periphery of each first pixel unit P1 is the second pixel unit P2, and the periphery of each second pixel unit P2 is the first pixel unit P1. It is understood that one second pixel unit P2 may be further disposed to be spaced apart by two or more first pixel units P1. That is, the first pixel cell P1 and the second pixel cell P2 may be disposed in an interlaced manner, may be uniformly interlaced, or may be non-uniformly interlaced, in the entire display region. That is, as long as one part of the pixel cells is the first pixel cell P1 and the other part is the second pixel cell P2.
In this embodiment, the first electrode stripes 1061 and the third electrode stripes 1063 are parallel to each other. More specifically, the first electrode stripes 1061 and the third electrode stripes 1063 are parallel to the horizontal direction.
In this embodiment, the included angle between the second electrode stripes 1062 and the fourth electrode stripes 1064 is about 160 °. Specifically, the second electrode strips 1062 are angled at about-80 ° from the horizontal, and the fourth electrode strips 1064 are angled at about 80 ° from the horizontal. It is understood that the included angle between the second electrode stripes 1062 and the horizontal direction may be any angle greater than or equal to 45 ° and less than 90 °, and the included angle between the fourth electrode stripes 1064 and the horizontal direction may be any angle greater than or equal to 45 ° and less than 90 °. The included angle between the second electrode strip 1062 and the horizontal direction is about-80 degrees, the included angle between the fourth electrode strip 1064 and the horizontal direction is about 80 degrees, and the experimental verification proves that the display effect of the display panel is better.
In this embodiment, the first pixel electrode 106a further includes a fifth electrode stripe 1065, the extending direction of the fifth electrode stripe 1065 is offset from the vertical direction to a certain angle toward the second direction, the second pixel electrode 106b further includes a sixth electrode stripe 1066, and the extending direction of the sixth electrode stripe 1066 is offset from the vertical direction to a certain angle toward the first direction. Specifically, the included angle between the fifth electrode strip 1065 and the horizontal direction is B, and the included angle between the sixth electrode strip 1066 and the horizontal direction is-B, and certainly, the included angle between the fifth electrode strip 1065 and the horizontal direction may not be equal to the included angle between the sixth electrode strip 1066 and the horizontal direction. More specifically, B is about 80 °. Both ends of the first electrode bar 1061 are connected to two fifth electrode bars 1065, respectively, and both ends of the third electrode bar 1063 are connected to two sixth electrode bars 1066, respectively. It is understood that B may have other angles as long as the fifth electrode stripe 1065 and the sixth electrode stripe 1066 can connect the corresponding first electrode stripe 1061 and the third electrode stripe 1063. The pixel electrode in each pixel unit is of a double-domain structure, and the display effect is better.
The color filter substrate 30 includes a second substrate 302 and a color resist layer 304 disposed on the second substrate 302. The color resist layer 304 is, for example, R, G, B color resist. The color resist layer 304 is provided on the surface of the second substrate 302 on the side closer to the liquid crystal layer 50. A Black Matrix (BM) may be disposed between color resists of the color resist layer 304 to prevent light of different colors from being mixed. The color filter substrate 30 further includes a viewing angle control electrode 306. The viewing angle control electrode 306 covers the entire display area, i.e. the viewing angle control electrode 306 is a planar electrode. The viewing angle control electrode 306 is provided on a surface of the color resist layer 304 on a side remote from the second substrate 302. The color filter substrate 30 further includes a protection layer 309, and the protection layer 309 is disposed on a surface of the viewing angle control electrode 306 close to the liquid crystal layer 50. In this embodiment, the viewing angle control electrode 306 is made of a transparent conductive material, such as an ITO (indium tin oxide) material.
In this embodiment, the liquid crystal molecules in the liquid crystal layer 50 are positive liquid crystal molecules, and the positive liquid crystal molecules have the advantage of fast response. In an initial state (i.e., when no voltage is applied to the display panel), the positive liquid crystal molecules in the liquid crystal layer 50 are in a lying posture substantially parallel to the array substrate 10 and the color filter substrate 30, i.e., the long axis direction of the positive liquid crystal molecules is substantially parallel to the surfaces of the array substrate 10 and the color filter substrate 30. However, in practical applications, a smaller initial pretilt angle may be provided between the positive liquid crystal molecules in the liquid crystal layer 50 and the array substrate 10 and the color filter substrate 30, and the range of the initial pretilt angle may be less than or equal to 10 degrees, that is: 0 DEG ≦ theta ≦ 10 deg. Of course, the liquid crystal molecules in the liquid crystal layer 50 may also be negative liquid crystal molecules.
In this embodiment, the display panel can be switched between the wide viewing angle mode and the full narrow viewing angle mode by controlling the voltage signal applied to the viewing angle control electrode 306.
In the first viewing angle mode (i.e., wide viewing angle mode when the liquid crystal molecules are positive liquid crystal molecules), as shown in fig. 2, a voltage of 0V is applied to the viewing angle control electrode 306, an alternating voltage is applied to both the first pixel electrode 106a and the second pixel electrode 106b, and a voltage of 0V is applied to the common electrode 104. At this time, the voltage of the viewing angle control electrode 306 is 0V, the liquid crystal molecules of the liquid crystal layer 50 rotate in the horizontal direction only under the action of the electrode electric field of the pixel electrode and the common electrode 104, no tilting occurs, the tilt angle is kept almost unchanged, and the display panel realizes normal wide viewing angle display. It can be understood that in the wide viewing angle mode, the voltage applied to the common electrode 104 and the viewing angle control electrode 306 may not be 0V, and may also be a dc voltage or an ac voltage other than 0V, as long as the voltage difference between the common electrode 104 and the viewing angle control electrode 306 is less than a predetermined value (e.g., 1V), and generally, the same Vcom voltage is applied to the common electrode 104 and the viewing angle control electrode 306.
In the second viewing angle mode (i.e., the full narrow viewing angle mode when the liquid crystal molecules are positive liquid crystal molecules), as shown in fig. 3, a voltage is applied to the viewing angle control electrode 306, and a voltage of 0V is applied to the common electrode 104, and even if there is a voltage of one offset value between the viewing angle control electrode 306 and the common electrode 104, an ac voltage is applied to both the first pixel electrode 106a and the second pixel electrode 106 b. At this time, a voltage difference greater than or equal to a predetermined value exists between the viewing angle control electrode 306 and the common electrode 104, and since the extending directions of the first pixel electrode 106a and the second pixel electrode 106b are different, in the region corresponding to the first pixel electrode 106a, the liquid crystal molecules tilt at an angle, and in the region corresponding to the second pixel electrode 106b, the liquid crystal molecules tilt at another angle, so that left and right light leakage and up and down light leakage can be formed at the same time. In this way, the display panel realizes a full narrow viewing angle display. It is understood that in the full view mode, the voltage applied to the common electrode 104 may not be 0V, and may also be a dc voltage or an ac voltage other than 0V, as long as the voltage difference between the common electrode 104 and the view angle control electrode 306 is greater than or equal to a predetermined value (e.g., 1V), and in general, a Vcom voltage is applied to the common electrode 104.
Hereinafter, a difference in display effects between a display panel (denoted by a) in which the extending direction of the second electrode stripes 1062 is the same as the extending direction of the fourth electrode stripes 1064 and a display panel (denoted by b) in which the extending direction of the second electrode stripes 1062 is different from the extending direction of the fourth electrode stripes 1064 according to the present invention is compared.
As shown in table 1 below and fig. 4, the Transmittance (TR) of the display panel of the present invention is significantly improved. As shown in table 2 below, the response time of the display panel of the present invention is shortened. As shown in fig. 5, the Contrast Ratio (CR) of the display panel of the present invention is improved by about 8%.
TABLE 1
Note: the voltage is the viewing angle control electrode voltage.
TABLE 2
| a | b | |
| Pixel on time (ms) | 25.1584 | 23.5049 |
| Pixel off time (ms) | 20.4526 | 20.1039 |
| Pixel switching time (ms) | 45.611 | 43.6088 |
On one hand, the display panel disclosed by the invention has the advantages that the pixel electrodes of the pixel units comprise the first pixel electrode and the second pixel electrode which have different extending directions, so that the display panel can be switched between a wide viewing angle and a full-narrow viewing angle by applying different voltages to the viewing angle control electrodes, various requirements of users can be met, and the display effect is good; meanwhile, the extending directions of the second electrode bar 1062 and the fourth electrode bar 1064 of the two different pixel units are designed to be inclined in opposite directions, so that the transmittance of the display panel is improved, the response time is shortened, the response speed is increased, the contrast is improved, and the display effect of the display panel is improved.
Second embodiment
As shown in fig. 6, the display panel of the second embodiment of the present invention has substantially the same structure as the display panel of the first embodiment, except that in this embodiment, a first pixel electrode 106a and a third pixel electrode 106c are disposed in each first pixel unit P1, a second pixel electrode 106b and a fourth pixel electrode 106d are disposed in each second pixel unit P2, the first pixel electrode 106a includes a first electrode strip 1061, the second pixel electrode 106b includes a second electrode strip 1062, the third pixel electrode 106c includes a third electrode strip 1063, and the fourth pixel electrode 106d includes a fourth electrode strip 1064. The first electrode stripes 1061 and the second electrode stripes 1062 extend in different directions, the third electrode stripes 1063 extend in different directions, and the fourth electrode stripes 1064 extend in different directions (that is, the first electrode stripes 1061 and the second electrode stripes 1062 extend in different directions, and the third electrode stripes 1063 and the fourth electrode stripes 1064 extend in different directions), the first electrode stripes 1061 and the third electrode stripes 1063 extend in substantially the same direction, the second electrode stripes 1062 extend in different directions, and the fourth electrode stripes 1064 extend in different directions. More specifically, the angle of the second electrode stripes 1062 offset toward the first direction may be equal to the angle of the fourth electrode stripes 1064 offset toward the second direction, i.e., the angle between the second electrode stripes 1062 and the vertical direction is a, and the angle between the fourth electrode stripes 1064 and the vertical direction is-a. By setting the angle of the second electrode stripes 1062 offset toward the first direction to be equal to the angle of the fourth electrode stripes 1064 offset toward the second direction, the electric field of the display panel is more uniform and the transmittance is better.
In the present embodiment, the first pixel cells P1 and the second pixel cells P2 are alternately arranged in the longitudinal direction. That is, the pixel unit in the nth row is the first pixel unit P1, the pixel unit in the (N + 1) th row is the second pixel unit P2, and N is a positive integer. It is understood that the first pixel cells P1 and the second pixel cells P2 are alternately arranged in the lateral direction. That is, the pixel unit of the nth column is the first pixel unit P1, the pixel unit of the (N + 1) th column is the second pixel unit P2, and N is a positive integer. It is understood that the first pixel unit P1 and the second pixel unit P2 may be alternatively disposed, that is, the periphery of each first pixel unit P1 is the second pixel unit P2, and the periphery of each second pixel unit P2 is the first pixel unit P1. It is understood that one second pixel unit P2 may be further disposed to be spaced apart by two or more first pixel units P1. That is, the first pixel cell P1 and the second pixel cell P2 may be disposed in an interlaced manner, may be uniformly interlaced, or may be non-uniformly interlaced, in the entire display region. That is, as long as one part of the pixel cells is the first pixel cell P1 and the other part is the second pixel cell P2.
In this embodiment, the first electrode stripes 1061 and the third electrode stripes 1063 are parallel to each other. More specifically, the first electrode stripes 1061 and the third electrode stripes 1063 are parallel to the horizontal direction.
In this embodiment, the included angle between the second electrode stripes 1062 and the fourth electrode stripes 1064 is about 160 °. Specifically, the second electrode strips 1062 are angled at about-80 ° from the horizontal, and the fourth electrode strips 1064 are angled at about 80 ° from the horizontal. It is understood that the included angle between the second electrode stripes 1062 and the horizontal direction may be any angle greater than or equal to 45 ° and less than 90 °, and the included angle between the fourth electrode stripes 1064 and the horizontal direction may be any angle greater than or equal to 45 ° and less than 90 °.
In this embodiment, the first pixel electrode 106a further includes a fifth electrode stripe 1065, the extending direction of the fifth electrode stripe 1065 is offset from the vertical direction to a certain angle toward the second direction, the second pixel electrode 106b further includes a sixth electrode stripe 1066, and the extending direction of the sixth electrode stripe 1066 is offset from the vertical direction to a certain angle toward the first direction. Specifically, the included angle between the fifth electrode strip 1065 and the horizontal direction is B, and the included angle between the sixth electrode strip 1066 and the horizontal direction is-B, and certainly, the included angle between the fifth electrode strip 1065 and the horizontal direction may not be equal to the included angle between the sixth electrode strip 1066 and the horizontal direction. More specifically, B is about 80 °. Both ends of the first electrode bar 1061 are connected to two fifth electrode bars 1065, respectively, and both ends of the third electrode bar 1063 are connected to two sixth electrode bars 1066, respectively. It is understood that B may be at other angles.
Other structures and operation principles of this embodiment are similar to those of the first embodiment, and are not described herein again.
Third embodiment
As shown in fig. 7, the display panel of the third embodiment of the present invention has substantially the same structure as the display panel of the first embodiment, except that in this embodiment, a first pixel electrode 106a and a fourth pixel electrode 106d are disposed in each first pixel unit P1, a second pixel electrode 106b and a third pixel electrode 106c are disposed in each second pixel unit P2, the first pixel electrode 106a includes a first electrode strip 1061, the second pixel electrode 106b includes a second electrode strip 1062, the third pixel electrode 106c includes a third electrode strip 1063, and the fourth pixel electrode 106d includes a fourth electrode strip 1064. The first electrode stripes 1061 and the fourth electrode stripes 1064 extend in different directions, the third electrode stripes 1063 extend in different directions, and the second electrode stripes 1062 extend in different directions (that is, the first electrode stripes 1061 and the fourth electrode stripes 1064 extend in different directions, and the third electrode stripes 1063 and the second electrode stripes 1062 extend in different directions), the first electrode stripes 1061 and the third electrode stripes 1063 extend in substantially the same direction, the second electrode stripes 1062 extend in different directions, and the fourth electrode stripes 1064 extend in different directions. More specifically, the angle of the second electrode stripes 1062 offset toward the first direction may be equal to the angle of the fourth electrode stripes 1064 offset toward the second direction, i.e., the angle between the second electrode stripes 1062 and the vertical direction is a, and the angle between the fourth electrode stripes 1064 and the vertical direction is-a. By setting the angle of the second electrode stripes 1062 offset toward the first direction to be equal to the angle of the fourth electrode stripes 1064 offset toward the second direction, the electric field of the display panel is more uniform and the transmittance is better.
In the present embodiment, the first pixel cells P1 and the second pixel cells P2 are alternately arranged in the longitudinal direction. That is, the pixel unit in the nth row is the first pixel unit P1, the pixel unit in the (N + 1) th row is the second pixel unit P2, and N is a positive integer. It is understood that the first pixel cells P1 and the second pixel cells P2 are alternately arranged in the lateral direction. That is, the pixel unit of the nth column is the first pixel unit P1, the pixel unit of the (N + 1) th column is the second pixel unit P2, and N is a positive integer. It is understood that the first pixel unit P1 and the second pixel unit P2 may be alternatively disposed, that is, the periphery of each first pixel unit P1 is the second pixel unit P2, and the periphery of each second pixel unit P2 is the first pixel unit P1. It is understood that one second pixel unit P2 may be further disposed to be spaced apart by two or more first pixel units P1. That is, the first pixel cell P1 and the second pixel cell P2 may be disposed in an interlaced manner, may be uniformly interlaced, or may be non-uniformly interlaced, in the entire display region. That is, as long as one part of the pixel cells is the first pixel cell P1 and the other part is the second pixel cell P2.
In this embodiment, the first electrode stripes 1061 and the third electrode stripes 1063 are parallel to each other. More specifically, the first electrode stripes 1061 and the third electrode stripes 1063 are parallel to the horizontal direction.
In this embodiment, the included angle between the second electrode stripes 1062 and the fourth electrode stripes 1064 is about 160 °. Specifically, the second electrode strips 1062 are angled at about-80 ° from the horizontal, and the fourth electrode strips 1064 are angled at about 80 ° from the horizontal. It is understood that the included angle between the second electrode stripes 1062 and the horizontal direction may be any angle greater than or equal to 45 ° and less than 90 °, and the included angle between the fourth electrode stripes 1064 and the horizontal direction may be any angle greater than or equal to 45 ° and less than 90 °.
In this embodiment, the first pixel electrode 106a further includes a fifth electrode stripe 1065, the extending direction of the fifth electrode stripe 1065 is offset from the vertical direction to a certain angle toward the second direction, the second pixel electrode 106b further includes a sixth electrode stripe 1066, and the extending direction of the sixth electrode stripe 1066 is offset from the vertical direction to a certain angle toward the first direction. Specifically, the included angle between the fifth electrode strip 1065 and the horizontal direction is B, and the included angle between the sixth electrode strip 1066 and the horizontal direction is-B, and certainly, the included angle between the fifth electrode strip 1065 and the horizontal direction may not be equal to the included angle between the sixth electrode strip 1066 and the horizontal direction. More specifically, B is about 80 °. Both ends of the first electrode bar 1061 are connected to two fifth electrode bars 1065, respectively, and both ends of the third electrode bar 1063 are connected to two sixth electrode bars 1066, respectively. It is understood that B may be at other angles. In this embodiment, the extending directions of the first electrode stripes 1061 and the fifth electrode stripes 1065 are substantially the same, and the extending directions of the second electrode stripes 1062 and the sixth electrode stripes 1066 are substantially the same, that is, the pixel electrode has a single domain structure.
Other structures and operation principles of this embodiment are similar to those of the first embodiment, and are not described herein again.
The invention also provides a display device comprising any one of the display panels. Specifically, the display device further includes a backlight module, and the backlight module may be disposed on a side of the display panel close to the array substrate 10.
According to the display panel and the display device, on one hand, as the pixel electrodes of the pixel units comprise the first pixel electrode and the second pixel electrode which have different extending directions, different voltages can be applied to the visual angle control electrodes, so that the display panel can be switched between a wide visual angle and a full narrow visual angle, various requirements of users can be met, and the display effect is good; meanwhile, since the extending directions of the second electrode bar 1062 and the fourth electrode bar 1064 of two different pixel units are designed to be inclined in opposite directions, the transmittance of the display device is improved, the response time is shortened, the response speed is increased, the contrast is improved, and the display effect of the display device is improved.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A display panel comprises an array substrate (10), a color film substrate (30) arranged opposite to the array substrate (10) and a liquid crystal layer (50) positioned between the array substrate (10) and the color film substrate (30), and is characterized in that a plurality of first pixel units (P1) and a plurality of second pixel units (P2) are formed on the array substrate (10) in a limited mode through scanning lines (100) and data lines (101);
a first pixel electrode (106a) and a second pixel electrode (106b) are arranged in each first pixel unit (P1), a third pixel electrode (106c) and a fourth pixel electrode (106d) are arranged in each second pixel unit (P2), or a first pixel electrode (106a) and a third pixel electrode (106c) are arranged in each first pixel unit (P1), a second pixel electrode (106b) and a fourth pixel electrode (106d) are arranged in each second pixel unit (P2), or a first pixel electrode (106a) and a fourth pixel electrode (106d) are arranged in each first pixel unit (P1), and a second pixel electrode (106b) and a third pixel electrode (106c) are arranged in each second pixel unit (P2);
the first pixel electrode (106a) includes a first electrode stripe (1061), the second pixel electrode (106b) includes a second electrode stripe (1062), the third pixel electrode (106c) includes a third electrode stripe (1063), the fourth pixel electrode (106d) includes a fourth electrode stripe (1064), the extending directions of the first electrode stripe (1061) and the second electrode stripe (1062) intersect, the extending directions of the first electrode stripe (1061) and the third electrode stripe (1063) are the same, the extending direction of the second electrode stripe (1062) is offset by a certain angle from the vertical direction toward a first direction, and the extending direction of the fourth electrode stripe (1064) is offset by a certain angle from the vertical direction toward a second direction opposite to the first direction; the color film substrate (30) comprises a visual angle control electrode (306), and the visual angle control electrode (306) is used for receiving different voltage signals to enable the display panel to be switched between different display modes.
2. The display panel according to claim 1, wherein the third electrode stripes (1063) and the fourth electrode stripes (1064) intersect in an extending direction, the second electrode stripes (1062) are at an angle a from the vertical direction, and the fourth electrode stripes (1064) are at an angle-a from the vertical direction.
3. The display panel of claim 1, wherein the first pixel cells (P1) and the second pixel cells (P2) are alternately arranged in a longitudinal direction; alternatively, the first pixel cells (P1) and the second pixel cells (P2) are alternately arranged in a lateral direction; alternatively, the first pixel cells (P1) and the second pixel cells (P2) are alternately arranged.
4. The display panel of claim 1, wherein the first electrode stripes (1061) and the third electrode stripes (1063) are parallel to each other.
5. The display panel according to claim 4, wherein the first electrode stripes (1061) and the third electrode stripes (1063) are parallel to a horizontal direction.
6. The display panel of claim 1, wherein the first pixel electrode (106a) further comprises a fifth electrode stripe (1065), the second pixel electrode (106b) further comprises a sixth electrode stripe (1066), two ends of the first electrode stripe (1061) are respectively connected to the two fifth electrode stripes (1065), and two ends of the third electrode stripe (1063) are respectively connected to the two sixth electrode stripes (1066).
7. The display panel according to claim 6, wherein the fifth electrode stripes (1065) extend in a direction angularly offset from the vertical direction toward the second direction, and the sixth electrode stripes (1066) extend in a direction angularly offset from the vertical direction toward the first direction.
8. The display panel according to claim 7, wherein the angle between the fifth electrode stripe (1065) and the horizontal direction is B, and the angle between the sixth electrode stripe (1066) and the horizontal direction is-B.
9. The display panel according to claim 1, wherein the second electrode strips (1062) are at an angle of-80 ° to the horizontal, and the fourth electrode strips (1064) are at an angle of 80 ° to the horizontal.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
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| CN108519704A (en) * | 2018-05-22 | 2018-09-11 | 昆山龙腾光电有限公司 | Display panel and narrow viewing angle display methods |
| CN108897151A (en) * | 2018-07-17 | 2018-11-27 | 昆山龙腾光电有限公司 | The changeable liquid crystal display device in visual angle |
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| CN107797343A (en) * | 2017-11-08 | 2018-03-13 | 昆山龙腾光电有限公司 | Visual angle changeable liquid crystal display device and its driving method |
| CN108508666A (en) * | 2018-04-13 | 2018-09-07 | 昆山龙腾光电有限公司 | Array substrate, liquid crystal display device and view angle switch method |
| CN108519704A (en) * | 2018-05-22 | 2018-09-11 | 昆山龙腾光电有限公司 | Display panel and narrow viewing angle display methods |
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