CN114755864B - Display panel, driving method thereof and display device - Google Patents
Display panel, driving method thereof and display device Download PDFInfo
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- CN114755864B CN114755864B CN202210475803.7A CN202210475803A CN114755864B CN 114755864 B CN114755864 B CN 114755864B CN 202210475803 A CN202210475803 A CN 202210475803A CN 114755864 B CN114755864 B CN 114755864B
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 241
- 239000000758 substrate Substances 0.000 claims abstract description 116
- 239000011159 matrix material Substances 0.000 claims abstract description 28
- 230000005684 electric field Effects 0.000 claims description 28
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000004044 response Effects 0.000 abstract description 36
- 230000000694 effects Effects 0.000 abstract description 20
- 230000009286 beneficial effect Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 8
- 230000001133 acceleration Effects 0.000 description 7
- 230000010287 polarization Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
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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
-
- 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
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
Abstract
The invention discloses a display panel, a driving method thereof and a display device, and relates to the technical field of display, wherein the display panel comprises: the color film substrate and the array substrate are oppositely arranged, and the liquid crystal layer is arranged between the color film substrate and the array substrate; the array substrate comprises a first substrate, a common electrode and a pixel electrode, wherein the common electrode and the pixel electrode are positioned on one side of the first substrate, which is close to the color film substrate; the color film substrate comprises a second substrate and a black matrix positioned on one side of the second substrate close to the array substrate; the display panel further includes a compensation electrode at least partially overlapping the black matrix in a direction perpendicular to a plane in which the first substrate is disposed. The invention solves the problem that the response time of the liquid crystal display panel in the prior art is long to influence the display effect, and reduces the response time of the liquid crystal display panel.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel, a driving method thereof and a display device.
Background
The response time of a liquid crystal display panel refers to the time required for liquid crystal molecules in the liquid crystal display panel to switch from one angle to another. With the development of display technology, the frame rate of the liquid crystal display panel is required to be higher and higher, and accordingly, the response time required for each frame of picture is required to be shorter and shorter.
However, the driving capability of the driving circuit in the prior art is limited at present, so that the response time required by the display screen of the liquid crystal display panel is long when the display screen is switched, and even exceeds the response time of one frame of screen, so that the liquid crystal display panel in the prior art has a smear phenomenon.
In the prior art, the response time is accelerated mainly by adjusting the liquid crystal parameters or reducing the thickness of the box, but the transmittance and the reliability are deteriorated, and the process difficulty is increased.
Disclosure of Invention
In view of the above, the present invention provides a display panel, a driving method thereof, and a display device, which solve the problem that the response time of the liquid crystal display panel is long to affect the display effect in the prior art, and reduce the response time of the liquid crystal display panel.
The present invention provides a display panel, comprising: the color film substrate and the array substrate are oppositely arranged, and the liquid crystal layer is arranged between the color film substrate and the array substrate; the array substrate comprises a first substrate, a common electrode and a pixel electrode, wherein the common electrode and the pixel electrode are positioned on one side of the first substrate, which is close to the color film substrate; the color film substrate comprises a second substrate and a black matrix positioned on one side of the second substrate close to the array substrate; the display panel further includes a compensation electrode at least partially overlapping the black matrix in a direction perpendicular to a plane in which the first substrate is disposed.
Based on the same thought, the invention also provides a driving method of the display panel, which is used for driving the display panel provided by the invention, and comprises the following steps: a first signal is applied to the compensation electrode at least such that an electric field is formed between the compensation electrode and the common electrode.
Based on the same thought, the invention also provides a display device which comprises the display panel provided by the invention.
Compared with the prior art, the display panel, the driving method thereof and the display device provided by the invention have the advantages that at least the following effects are realized:
the display panel provided by the invention further comprises a compensation electrode, wherein an electric field is formed between the compensation electrode and the common electrode at least by applying a first signal to the compensation electrode, and the electric field can drive liquid crystal molecules in a region corresponding to the compensation electrode in the liquid crystal layer. Because the liquid crystal molecules in the liquid crystal layer have the property of continuum, when the liquid crystal molecules in the area corresponding to the compensation electrode in the liquid crystal layer deflect, the deflection of the liquid crystal molecules in the area corresponding to the pixel electrode in the liquid crystal layer is facilitated, so that the accelerated deflection of the liquid crystal molecules in the area corresponding to the pixel electrode in the liquid crystal layer can be driven, the response time of the liquid crystal display panel is effectively reduced, and the problem that the response time of the liquid crystal display panel is long and the display effect is influenced in the prior art is solved. The color film substrate comprises a second substrate and a black matrix positioned on one side of the second substrate close to the array substrate. The compensation electrode at least partially overlaps the black matrix in a direction perpendicular to a plane in which the first substrate is located. When the liquid crystal molecules in the area corresponding to the compensation electrode in the liquid crystal layer deflect, the light rays in the area corresponding to the compensation electrode in the display panel are blocked by the black matrix even if the deflected liquid crystal molecules change the polarization direction, so that the light rays in the area corresponding to the compensation electrode in the display panel are prevented from being emitted from the light emitting surface of the display panel. That is, when the liquid crystal molecules in the region of the liquid crystal layer corresponding to the compensation electrode are deflected, the influence on the normal display of the display panel is effectively reduced.
Of course, it is not necessary for any one product to practice the invention to achieve all of the technical effects described above at the same time.
Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram of a display panel according to the present invention;
FIG. 2 is a schematic diagram of another display panel according to the present invention;
FIG. 3 is a schematic plan view of a display panel according to another embodiment of the present invention;
FIG. 4 is an enlarged schematic view of the portion A of the display panel shown in FIG. 3;
FIG. 5 is a schematic plan view of a display panel according to another embodiment of the present invention;
FIG. 6 is an enlarged schematic view of a portion B of the display panel shown in FIG. 5;
FIG. 7 is a schematic plan view of a display panel according to another embodiment of the present invention;
FIG. 8 is an enlarged schematic view of a portion C of the display panel shown in FIG. 7;
FIG. 9 is a schematic plan view of a display panel according to another embodiment of the present invention;
FIG. 10 is a driving timing diagram of a display panel according to the present invention;
FIG. 11 is a schematic diagram showing another driving timing diagram of a display panel according to the present invention;
fig. 12 is a schematic plan view of a display device according to the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
Fig. 1 is a schematic structural diagram of a display panel according to the present invention, and referring to fig. 1, a display panel is provided in this embodiment, and the display panel is a liquid crystal display panel. The display panel includes a color film substrate 10 and an array substrate 20 disposed opposite to each other, and a liquid crystal layer 30 disposed between the color film substrate 10 and the array substrate 20.
The array substrate 20 includes a first substrate 21, a common electrode 22 and a pixel electrode 23 at a side of the first substrate 21 near the color film substrate 10, and a driving electric field for driving liquid crystal molecules 31 of a region of the liquid crystal layer 30 corresponding to the pixel electrode 23 is formed between the common electrode 22 and the pixel electrode 23 by supplying a data signal to the pixel electrode 23.
It should be noted that, in fig. 1, a display panel with FFS (Fringe Field Switching liquid crystal ) mode is exemplarily shown, where the common electrode 22 and the pixel electrode 23 are located on different layers, and the pixel electrode 23 is located on a side of the common electrode 22 away from the first substrate 21. In other embodiments of the present invention, when the display panel is an FFS (Fringe Field Switching liquid crystal ) mode display panel, the common electrode and the pixel electrode are located in different layers, and the pixel electrode may be located on a side of the common electrode near the first substrate.
In other embodiments of the present invention, the display panel may also be an IPS (In Plane Switching liquid crystal, in-plane switching liquid crystal) mode display panel, where the common electrode and the pixel electrode may be located on the same film layer, or may be located on different film layers, and the pixel electrode is located on a side of the common electrode away from the first substrate, or the pixel electrode is located on a side of the common electrode close to the first substrate.
The display panel further includes a compensation electrode 40, at least an electric field is formed between the compensation electrode 40 and the common electrode 22 by applying a first signal to the compensation electrode 40, and the electric field drives the liquid crystal molecules 31 in the liquid crystal layer 30 in a region corresponding to the compensation electrode 40. Because the liquid crystal molecules 31 in the liquid crystal layer 30 have the property of a continuum, when the liquid crystal molecules 31 in the area corresponding to the compensation electrode 40 in the liquid crystal layer 30 deflect, the deflection of the liquid crystal molecules 31 in the area corresponding to the pixel electrode 23 in the liquid crystal layer 30 is facilitated, so that the acceleration deflection of the liquid crystal molecules 31 in the area corresponding to the pixel electrode 23 in the liquid crystal layer 30 can be driven, the response time of the liquid crystal display panel is effectively reduced, and the problem that the response time of the liquid crystal display panel is long and the display effect is influenced in the prior art is solved.
The color film substrate 10 includes a second substrate 11, and a black matrix 12 disposed on a side of the second substrate 11 near the array substrate 21. The compensation electrode 40 at least partially overlaps the black matrix 12 in a direction perpendicular to the plane of the first substrate 21. When the liquid crystal molecules 31 in the area corresponding to the compensation electrode 40 in the liquid crystal layer 30 are deflected, the light in the area corresponding to the compensation electrode 40 in the display panel is blocked by the black matrix 12 even if the polarized direction of the deflected liquid crystal molecules 31 is changed, so that the light in the area corresponding to the compensation electrode 40 in the display panel is prevented from being emitted from the light emitting surface of the display panel. That is, the liquid crystal molecules 31 in the liquid crystal layer 30 in the region corresponding to the compensation electrode 40 are deflected to effectively reduce the influence on the normal display of the display panel.
With continued reference to fig. 1, in some alternative embodiments, the vertical projection of the compensation electrode 40 onto the plane of the first substrate 21 is located within the vertical projection of the black matrix 12 onto the plane of the first substrate 21. When the liquid crystal molecules 31 in the region of the liquid crystal layer 30 corresponding to the compensation electrode 40 are deflected, the light in the region of the display panel corresponding to the compensation electrode 40 is blocked by the black matrix 12 even if the deflected liquid crystal molecules 31 change the polarization direction, so that the light in the region of the display panel corresponding to the compensation electrode 40 cannot be emitted from the light emitting surface of the display panel. That is, the liquid crystal molecules 31 in the region of the liquid crystal layer 30 corresponding to the compensation electrode 40 are deflected without affecting the normal display of the display panel.
With continued reference to fig. 1, in some alternative embodiments, the compensation electrode 40 is located in the array substrate 20, and the compensation electrode 40 is located on a side of the first substrate 21 near the color film substrate 10. That is, the compensation electrode 40 is disposed in the array substrate 20, and correspondingly, the signal line for transmitting signals to the compensation electrode 40 may be disposed in the circuit layer (not shown in fig. 1) of the array substrate 20, so that the signal line for transmitting signals to the compensation electrode 40 and the wiring in the circuit layer of the array substrate 20 may be made of the same material in the same mask process, thereby effectively reducing the process and production cost.
With continued reference to fig. 1, in some alternative embodiments, the compensation electrode 40 and the pixel electrode 23 are disposed in the same layer, and the compensation electrode 40 and the pixel electrode 23 may be made of the same material in the same mask process, so as to effectively reduce the process and production cost.
Fig. 2 is a schematic structural diagram of another display panel provided by the present invention, referring to fig. 2, in some alternative embodiments, the compensation electrode 40 is located in the color film substrate 10, and the compensation electrode 40 is located on a side of the second substrate 11 close to the array substrate 20. That is, the compensation electrode 40 is disposed in the color film substrate 10, so as to effectively avoid deviation of the positional relationship between the compensation electrode 40 and the black matrix 12 when deviation occurs in alignment and lamination of the color film substrate 10 and the array substrate 20, and thus avoid that when the liquid crystal molecules 31 in the region corresponding to the compensation electrode 40 in the liquid crystal layer 30 are deflected, after the polarization direction of the deflected liquid crystal molecules 31 in the region corresponding to the compensation electrode 40 in the display panel is changed, part of the deflected liquid crystal molecules 31 cannot be blocked by the black matrix 12, so that light in the region corresponding to the compensation electrode 40 in the display panel is prevented from being emitted from the light emitting surface of the display panel. Thereby avoiding the influence on the normal display of the display panel when the liquid crystal molecules 31 of the region of the liquid crystal layer 30 corresponding to the compensation electrode 40 are deflected.
Fig. 3 is a schematic plan view of a display panel according to another embodiment of the present invention, and fig. 4 is an enlarged schematic view of a portion a of the display panel shown in fig. 3, and referring to fig. 3 and 4, in some alternative embodiments, at least one compensation electrode 40 at least partially surrounds one pixel electrode 23. That is, the compensation electrode 40 is disposed around at least one pixel electrode 23 in the display panel, and by applying the first signal to the compensation electrode 40 around the pixel electrode 23, at least an electric field is formed between the compensation electrode 40 and the common electrode 22, and the electric field can drive the liquid crystal molecules 31 in the region corresponding to the compensation electrode 40 in the liquid crystal layer 30, and when the liquid crystal molecules 31 in the region corresponding to the compensation electrode 40 in the liquid crystal layer 30 deflect due to the nature of the continuum in the liquid crystal layer 30, the deflection of the liquid crystal molecules 31 in the region corresponding to the pixel electrode 23 in the liquid crystal layer 30 is facilitated, so that the acceleration deflection of the liquid crystal molecules 31 in the region corresponding to the pixel electrode 23 in the liquid crystal layer 30 can be driven, and the response time of the liquid crystal molecules 31 in the region corresponding to the pixel electrode 23 in the liquid crystal layer 30 can be effectively reduced.
It should be noted that, in fig. 3, for clarity of illustrating the structure of the compensation electrode 40, the black matrix 12 is not illustrated in fig. 3, the structure of the black matrix 12 in the display panel may refer to the black matrix illustrated in fig. 4, and the related illustrated modes are applicable in other embodiments of the present invention, which is not repeated herein.
Fig. 5 is a schematic plan view of a display panel according to another embodiment of the present invention, and fig. 6 is an enlarged schematic view of a portion B of the display panel shown in fig. 5, and referring to fig. 5 and 6, in some alternative embodiments, the compensation electrode 40 includes a first stripe-shaped electrode 41 extending along a first direction X and a second stripe-shaped electrode 42 extending along a second direction Y, wherein the first direction X and the second direction Y intersect. Optionally, the first direction X and the second direction Y are perpendicular. The compensation electrode 40 includes a first stripe-shaped electrode 41 extending in the first direction X and a second stripe-shaped electrode 42 extending in the second direction Y, thereby increasing the arrangement area of the compensation electrode 40 arranged around the pixel electrode 23, facilitating the accelerated deflection of the liquid crystal molecules 31 driving the region of the liquid crystal layer 30 corresponding to the pixel electrode 23, and further reducing the response time of the liquid crystal molecules 31 driving the region of the liquid crystal layer 30 corresponding to the pixel electrode 23.
It should be understood that, in fig. 5 and 6, the compensation electrode 40 is exemplarily shown to include a first strip electrode 41 extending along the first direction X and a second strip electrode 42 extending along the second direction Y, and in other embodiments of the present invention, the compensation electrode 40 may also include only the first strip electrode 41 extending along the first direction X, or only the second strip electrode 42 extending along the second direction Y, which is not described herein.
With continued reference to fig. 3 and 4, in some alternative embodiments, the display panel includes a plurality of subpixels P including at least a red subpixel P1, a green subpixel P2, and a blue subpixel P3. Since the emission luminance of the red subpixel P1 is maximized, the excessively long deflection time of the liquid crystal molecules 31 in the region of the liquid crystal layer 30 corresponding to the red subpixel P1 has a large influence on the display panel to display a white picture and a gray picture.
Along a third direction a, at least one side of the red subpixel P1 is provided with a compensation electrode 40, and the third direction a is parallel to the direction of the plane of the first substrate 21. That is, the compensation electrode 40 is disposed around the red subpixel P1, so that it is beneficial to accelerate the deflection of the liquid crystal molecules 31 in the region corresponding to the red subpixel P1 in the liquid crystal layer 30, and to reduce the response time of the liquid crystal molecules 31 in the region corresponding to the red subpixel P1 in the liquid crystal layer 30, so that the display effect of the display panel for displaying the white picture and the gray picture is prevented from being affected by the excessively long deflection time of the liquid crystal molecules 31 in the region corresponding to the red subpixel P1 in the liquid crystal layer 30.
It should be noted that, in fig. 3 and fig. 4, the third direction a is shown to be the same as the first direction X, and in other embodiments of the present invention, the third direction a may be the same as the second direction Y, and the third direction a may also be different from the first direction X and the second direction Y, which are not described in detail herein.
Fig. 7 is a schematic plan view of another display panel provided by the present invention, fig. 8 is an enlarged schematic view of a portion C of the display panel shown in fig. 7, and referring to fig. 7 and 8, in some alternative embodiments, compensation electrodes 40 are disposed on at least one side of the sub-pixels P along the third direction a. That is, the compensation electrodes 40 are disposed around all the sub-pixels P in the display panel, which is favorable for driving the liquid crystal molecules 31 in the liquid crystal layer 30 in the region corresponding to each sub-pixel P to accelerate and deflect, so that the liquid crystal molecules 31 in the region corresponding to each sub-pixel P in the liquid crystal layer 30 can be driven to accelerate and deflect, the response time of the liquid crystal display panel is effectively reduced, and the problem that the response time of the liquid crystal display panel is long and the display effect is affected in the prior art is solved.
Fig. 9 is a schematic plan view of still another display panel according to the present invention, and referring to fig. 9, in some alternative embodiments, the display panel includes a display area AA and a non-display area NA disposed around the display area AA, where the display area AA is used for display, the non-display area NA is not used for display, and the non-display area NA may be used for configuration of circuits and the like.
At least part of the compensation electrodes 40 are located in the display area AA, and the compensation electrodes 40 are connected to each other, i.e. the compensation electrodes 40 are integrally connected. The non-display area NA includes a driving chip 50, the driving chip 50 is electrically connected with the compensation electrode 40 through a connection wire 60, and the driving chip 50 can provide signals for the whole compensation electrode 40 through the connection wire 60, which is beneficial to simplifying the wiring difficulty of the display panel.
The connecting wire 60 is electrically connected with the compensation electrode 40 through the via hole 70, and the via hole 70 is located in the non-display area NA, so that the arrangement of the via hole 70 is prevented from influencing the arrangement of the sub-pixels P in the display area AA, the display effect of the display panel is prevented from being influenced by the arrangement of the via hole 70, the via hole 70 is located in the non-display area NA, the arrangement difficulty of the via hole 70 is facilitated to be simplified, and the yield is improved.
Optionally, the compensation electrode 40 includes a first sub-portion 43 located in the display area AA, and a second sub-portion 44 connected to all the first sub-portions 43, where two ends of the first sub-portion 43 are respectively connected to one second sub-portion 44 along the second direction Y, which is beneficial to improving the uniformity of signals on the compensation electrode 40.
The present embodiment provides a driving method of a display panel, which is used for driving the display panel provided by the foregoing embodiment of the present invention. The driving method comprises the following steps:
a first signal is applied to the compensation electrode at least such that an electric field is formed between the compensation electrode and the common electrode.
Specifically, referring to fig. 1, the display panel provided in this embodiment is a liquid crystal display panel, and the display panel includes a color film substrate 10 and an array substrate 20 that are disposed opposite to each other, and a liquid crystal layer 30 disposed between the color film substrate 10 and the array substrate 20.
The array substrate 20 includes a first substrate 21, a common electrode 22 and a pixel electrode 23 at a side of the first substrate 21 near the color film substrate 10, and a driving electric field for driving liquid crystal molecules 31 of a region of the liquid crystal layer 30 corresponding to the pixel electrode 23 is formed between the common electrode 22 and the pixel electrode 23 by supplying a data signal to the pixel electrode 23.
The display panel further includes a compensation electrode 40, at least an electric field is formed between the compensation electrode 40 and the common electrode 22 by applying a first signal to the compensation electrode 40, and the electric field drives the liquid crystal molecules 31 in the liquid crystal layer 30 in a region corresponding to the compensation electrode 40. Because the liquid crystal molecules 31 in the liquid crystal layer 30 have the property of a continuum, when the liquid crystal molecules 31 in the area corresponding to the compensation electrode 40 in the liquid crystal layer 30 deflect, the deflection of the liquid crystal molecules 31 in the area corresponding to the pixel electrode 23 in the liquid crystal layer 30 is facilitated, so that the acceleration deflection of the liquid crystal molecules 31 in the area corresponding to the pixel electrode 23 in the liquid crystal layer 30 can be driven, the response time of the liquid crystal display panel is effectively reduced, and the problem that the response time of the liquid crystal display panel is long and the display effect is influenced in the prior art is solved.
The color film substrate 10 includes a second substrate 11, and a black matrix 12 disposed on a side of the second substrate 11 near the array substrate 21. The compensation electrode 40 at least partially overlaps the black matrix 12 in a direction perpendicular to the plane of the first substrate 21. When the liquid crystal molecules 31 in the area corresponding to the compensation electrode 40 in the liquid crystal layer 30 are deflected, the light in the area corresponding to the compensation electrode 40 in the display panel is blocked by the black matrix 12 even if the polarized direction of the deflected liquid crystal molecules 31 is changed, so that the light in the area corresponding to the compensation electrode 40 in the display panel is prevented from being emitted from the light emitting surface of the display panel. That is, the liquid crystal molecules 31 in the liquid crystal layer 30 in the region corresponding to the compensation electrode 40 are deflected to effectively reduce the influence on the normal display of the display panel.
Fig. 10 is a driving timing diagram of a display panel according to the present invention, and referring to fig. 1 and 10, in some alternative embodiments, a first signal is applied to a compensation electrode 40 in a first frame in which a data signal is applied to a pixel electrode 23 and/or in a first frame in which a voltage value of the data signal applied to the pixel electrode 23 increases.
Specifically, in each frame time of the display panel displaying a picture, a driving signal is supplied to a scan line Gate (not shown in fig. 1) electrically connected to the pixel electrode 23, so that a transistor (not shown in fig. 1) electrically connected to the pixel electrode 23 is in an on state, and thus a data signal is transmitted to the pixel electrode 23, thereby forming a driving electric field between the common electrode 22 and the pixel electrode 23, and the driving electric field is used to drive the liquid crystal molecules 31 in the region of the liquid crystal layer 30 corresponding to the pixel electrode 23. When the first frame of the data signal is applied to the pixel electrode 23, the driving electric field formed between the common electrode 22 and the pixel electrode 23 drives the liquid crystal molecules 31 in the region corresponding to the pixel electrode 23 in the liquid crystal layer 30 to deflect, so that the first signal is applied to the compensation electrode 40 when the first frame of the data signal is applied to the pixel electrode 23, the electric field between the compensation electrode 40 and the common electrode 22 can drive the liquid crystal molecules 31 in the region corresponding to the compensation electrode 40 in the liquid crystal layer 30 to deflect, and the liquid crystal molecules 31 in the region corresponding to the compensation electrode 40 in the liquid crystal layer 30 can deflect favorably when the liquid crystal molecules 31 in the region corresponding to the pixel electrode 23 in the liquid crystal layer 30 deflect, thereby realizing the accelerated deflection of the liquid crystal molecules 31 in the region corresponding to the pixel electrode 23 in the liquid crystal layer 30, effectively reducing the response time of the liquid crystal display panel, and being beneficial to solving the problem that the response time of the liquid crystal display panel in the prior art is long and the display effect is affected.
Similarly, in the first frame in which the voltage value of the data signal applied to the pixel electrode 23 increases, the driving electric field formed between the common electrode 22 and the pixel electrode 23 drives the liquid crystal molecules 31 in the region corresponding to the pixel electrode 23 in the liquid crystal layer 30 to deflect, so that the first signal is applied to the compensation electrode 40 in the first frame in which the data signal is applied to the pixel electrode 23, the electric field between the compensation electrode 40 and the common electrode 22 can drive the liquid crystal molecules 31 in the region corresponding to the compensation electrode 40 in the liquid crystal layer 30 to deflect, and the liquid crystal molecules 31 in the region corresponding to the compensation electrode 40 in the liquid crystal layer 30 can deflect favorably when the liquid crystal molecules 31 in the region corresponding to the pixel electrode 23 in the liquid crystal layer 30 deflect, thereby realizing the acceleration deflection of the liquid crystal molecules 31 in the region corresponding to the pixel electrode 23 in the liquid crystal layer 30, effectively reducing the response time of the liquid crystal display panel, and being favorable for solving the problem that the response time of the liquid crystal display panel in the prior art is long and the display effect is affected.
When the voltage value of the data signal applied to the pixel electrode 23 is unchanged, the deflection angle of the liquid crystal molecules 31 in the region corresponding to the pixel electrode 23 in the liquid crystal layer 30 is unchanged, and at this time, the first signal is not required to be applied to the compensation electrode 40.
When the voltage value of the data signal applied to the pixel electrode 23 is reduced, the electric field between the compensation electrode 40 and the common electrode 22 may drive the liquid crystal molecules 31 in the region corresponding to the compensation electrode 40 in the liquid crystal layer 30 to gradually return to the original state, and at this time, the first signal is not applied to the compensation electrode 40, and the electric field for driving the liquid crystal molecules 31 in the region corresponding to the compensation electrode 40 in the liquid crystal layer 30 to deflect is not formed between the compensation electrode 40 and the common electrode 22, so that the length of time for which the liquid crystal molecules 31 in the region corresponding to the liquid crystal molecules 31 in the liquid crystal layer 30 return to the original state is not affected.
With continued reference to fig. 1 and 10, in some alternative embodiments, the method of driving further comprises: the time during which the first signal is applied to the compensation electrode 40 at least once is one frame time.
Specifically, the longer the time of applying the first signal to the compensation electrode 40, the more advantageous the deflection of the liquid crystal molecules 31 in the region of the liquid crystal layer 30 corresponding to the pixel electrode 23, but when the time of applying the first signal to the compensation electrode 40 is too long, the too long time of deflecting the liquid crystal molecules 31 in the region of the liquid crystal layer 30 corresponding to the compensation electrode 40 may be caused, and since the liquid crystal molecules 31 in the liquid crystal layer 30 have a continuous nature, the liquid crystal molecules 31 in the surrounding region of the liquid crystal layer 30 corresponding to the compensation electrode 40 may be deflected, so that the light in the region may be emitted from the light-emitting surface of the display panel through the polarizer after changing the polarization direction, thereby affecting the display effect of the display panel. The time of applying the first signal to the compensation electrode 40 is a frame time, which is favorable for the deflection of the liquid crystal molecules 31 in the region corresponding to the pixel electrode 23 in the liquid crystal layer 30, so that the acceleration deflection of the liquid crystal molecules 31 in the region corresponding to the pixel electrode 23 in the liquid crystal layer 30 can be driven, the response time of the liquid crystal display panel is effectively reduced, and meanwhile, the influence on the display effect of the display panel is effectively avoided.
With continued reference to fig. 1 and 10, in some alternative embodiments, the method of driving further comprises: the start time of applying the first signal to the compensation electrode 40 is synchronized with the start time of applying the data signal to the pixel electrode 23. That is, the first signal is applied to the compensation electrode 40 while the data signal is applied to the pixel electrode 23, at this time, the driving electric field formed between the common electrode 22 and the pixel electrode 23 drives the liquid crystal molecules 31 in the region corresponding to the pixel electrode 23 in the liquid crystal layer 30 to deflect, and at the same time, the electric field between the compensation electrode 40 and the common electrode 22 can drive the liquid crystal molecules 31 in the region corresponding to the compensation electrode 40 in the liquid crystal layer 30 to deflect, and when the liquid crystal molecules 31 in the region corresponding to the compensation electrode 40 in the liquid crystal layer 30 deflect, the deflection of the liquid crystal molecules 31 in the region corresponding to the pixel electrode 23 in the liquid crystal layer 30 is facilitated, so that the acceleration deflection of the liquid crystal molecules 31 in the region corresponding to the pixel electrode 23 in the liquid crystal layer 30 can be realized, and the response time of the liquid crystal display panel is effectively reduced, thereby being beneficial to solve the problem that the response time of the liquid crystal display panel in the prior art is long and the display effect is affected.
Fig. 11 is another driving timing chart of the display panel according to the present invention, and referring to fig. 1 and 11, the start time of applying the first signal to the compensation electrode 40 may be earlier than the start time of applying the data signal to the pixel electrode 23. Similarly, a first signal is applied to the compensation electrode 40, at this time, a driving electric field formed between the common electrode 22 and the compensation electrode 40 drives the liquid crystal molecules 31 in the region corresponding to the compensation electrode 40 in the liquid crystal layer 30 to deflect, then, a data signal is applied to the pixel electrode 23, the electric field between the pixel electrode 23 and the common electrode 22 can drive the liquid crystal molecules 31 in the region corresponding to the pixel electrode 23 in the liquid crystal layer 30 to deflect, and after the liquid crystal molecules 31 in the region corresponding to the compensation electrode 40 in the liquid crystal layer 30 deflect, the deflection of the liquid crystal molecules 31 in the region corresponding to the pixel electrode 23 in the liquid crystal layer 30 is facilitated, so that the acceleration deflection of the liquid crystal molecules 31 in the region corresponding to the pixel electrode 23 in the liquid crystal layer 30 can be realized, and the response time of the liquid crystal display panel is effectively reduced, thereby being beneficial to solving the problem that the response time of the liquid crystal display panel in the prior art is long and the display effect is affected.
As can be confirmed from simulation experiments, the start time of applying the first signal to the compensation electrode 40 is synchronized with the start time of applying the data signal to the pixel electrode 23, or the start time of applying the first signal to the compensation electrode 40 may be earlier than the start time of applying the data signal to the pixel electrode 23, and the response time of the liquid crystal display panel may be reduced by 0.5ms to 1.2ms.
With continued reference to fig. 1 and 10, in some alternative embodiments, the voltage value of the first signal is equal to the voltage value of the data signal applied to the pixel electrode 23, so that the angle at which the liquid crystal molecules 31 in the area corresponding to the compensation electrode 40 deflect in the liquid crystal layer 30 is the same as the angle at which the liquid crystal molecules 31 in the area corresponding to the pixel electrode 23 deflect in the liquid crystal layer 30, and since the liquid crystal molecules 31 in the liquid crystal layer 30 have a continuous nature, the angle at which the liquid crystal molecules 31 in the area corresponding to the compensation electrode 40 deflect in the liquid crystal layer 30 is the same as the angle at which the liquid crystal molecules 31 in the area corresponding to the pixel electrode 23 deflect in the liquid crystal layer 30 are beneficial to the deflection of the liquid crystal molecules 31 in the area corresponding to the pixel electrode 23 in the liquid crystal layer 30, so that the response time of the liquid crystal display panel can be effectively reduced, thereby being beneficial to solve the problem that the response time of the liquid crystal display panel in the prior art is long and the display effect is affected.
It will be appreciated that the voltage value of the first signal is exemplarily shown to be equal to the voltage value of the data signal applied to the pixel electrode 23, and in other embodiments of the present invention, the voltage value of the first signal may be greater than the voltage value of the data signal applied to the pixel electrode 23, so that the angle of deflection of the liquid crystal molecules 31 in the area corresponding to the compensation electrode 40 in the liquid crystal layer 30 is greater than the angle of deflection of the liquid crystal molecules 31 in the area corresponding to the pixel electrode 23 in the liquid crystal layer 30, which is more beneficial to the deflection of the liquid crystal molecules 31 in the area corresponding to the pixel electrode 23 in the liquid crystal layer 30, and further reduces the response time of the liquid crystal display panel, thereby being beneficial to solving the problem that the response time of the liquid crystal display panel is long and the display effect is affected in the prior art.
Referring to fig. 9 and 10, in some alternative embodiments, the first signal is applied to all compensation electrodes 40 simultaneously.
Specifically, at least a portion of the compensation electrode 40 is located in the display area AA, and the compensation electrode 40 is connected to each other, i.e., the compensation electrode 40 is in a structure integrally connected, and the non-display area NA includes the driving chip 50, the driving chip 50 is electrically connected to the compensation electrode 40 through the connection line 60, and the driving chip 50 can provide signals to the whole compensation electrode 40 through the connection line 60, so that the number of signal lines for providing signals to the compensation electrode 40 is reduced, and the difficulty of wire arrangement of the display panel is simplified.
With continued reference to fig. 1 and 10, in some alternative embodiments, the first signal is applied to only a portion of the compensation electrode 40.
Specifically, when the liquid crystal molecules 31 in the area corresponding to the partial pixel electrode 23 in the liquid crystal layer 30 need to deflect, the first signal can be applied to the compensation electrode 40 around the partial pixel electrode 23, so as to facilitate the deflection of the liquid crystal molecules 31 in the area corresponding to the partial pixel electrode 23 in the liquid crystal layer 30, and thereby the accelerated deflection of the liquid crystal molecules 31 in the area corresponding to the partial pixel electrode 23 in the liquid crystal layer 30 can be driven.
When the liquid crystal molecules 31 in the area corresponding to the partial pixel electrode 23 in the liquid crystal layer 30 do not need to deflect, the first signal is not applied to the compensation electrode 40 around the partial pixel electrode 23, so that the risk that the deflected liquid crystal molecules 31 in the area change the polarization direction and then are emitted from the light emitting surface of the display panel through the polarizer is reduced, and the risk that the display effect of the display panel is affected is reduced.
In some alternative embodiments, please refer to fig. 12, fig. 12 is a schematic plan view of a display device provided by the present invention, and a display device 1000 provided by the present embodiment includes a display panel 100 provided by the above-mentioned embodiments of the present invention. The embodiment of fig. 12 is only an example of a mobile phone, and the display device 1000 is described, and it is to be understood that the display device 1000 provided in the embodiment of the present invention may be any other display device 1000 having a display function, such as a computer, a television, a vehicle-mounted display device, etc., which is not particularly limited in this respect. The display device 1000 provided in the embodiment of the present invention has the beneficial effects of the display panel 100 provided in the embodiment of the present invention, and the specific description of the display panel 100 in the above embodiments may be referred to in the embodiments, and the description of the embodiment is omitted herein.
As can be seen from the above embodiments, the display panel, the driving method thereof and the display device provided by the invention at least realize the following beneficial effects:
the display panel provided by the invention further comprises a compensation electrode, wherein an electric field is formed between the compensation electrode and the common electrode at least by applying a first signal to the compensation electrode, and the electric field can drive liquid crystal molecules in a region corresponding to the compensation electrode in the liquid crystal layer. Because the liquid crystal molecules in the liquid crystal layer have the property of continuum, when the liquid crystal molecules in the area corresponding to the compensation electrode in the liquid crystal layer deflect, the deflection of the liquid crystal molecules in the area corresponding to the pixel electrode in the liquid crystal layer is facilitated, so that the accelerated deflection of the liquid crystal molecules in the area corresponding to the pixel electrode in the liquid crystal layer can be driven, the response time of the liquid crystal display panel is effectively reduced, and the problem that the response time of the liquid crystal display panel is long and the display effect is influenced in the prior art is solved. The color film substrate comprises a second substrate and a black matrix positioned on one side of the second substrate close to the array substrate. The compensation electrode at least partially overlaps the black matrix in a direction perpendicular to a plane in which the first substrate is located. When the liquid crystal molecules in the area corresponding to the compensation electrode in the liquid crystal layer deflect, the light rays in the area corresponding to the compensation electrode in the display panel are blocked by the black matrix even if the deflected liquid crystal molecules change the polarization direction, so that the light rays in the area corresponding to the compensation electrode in the display panel are prevented from being emitted from the light emitting surface of the display panel. That is, when the liquid crystal molecules in the region of the liquid crystal layer corresponding to the compensation electrode are deflected, the influence on the normal display of the display panel is effectively reduced.
While certain specific embodiments of the invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (18)
1. A display panel, comprising: the color film substrate and the array substrate are oppositely arranged, and the liquid crystal layer is arranged between the color film substrate and the array substrate;
the array substrate comprises a first substrate, a common electrode and a pixel electrode, wherein the common electrode and the pixel electrode are positioned on one side of the first substrate, close to the color film substrate;
the color film substrate comprises a second substrate and a black matrix positioned on one side of the second substrate close to the array substrate;
the display panel further comprises a compensation electrode, the compensation electrode and the black matrix are at least partially overlapped along the direction perpendicular to the plane where the first substrate is located, a first signal is applied to the compensation electrode, at least an electric field is formed between the compensation electrode and the common electrode, and liquid crystal molecules in a region corresponding to the pixel electrode in the liquid crystal layer are driven to deflect in an accelerating mode.
2. The display panel of claim 1, wherein the display panel comprises,
the vertical projection of the compensation electrode on the plane of the first substrate is positioned in the vertical projection of the black matrix on the plane of the first substrate.
3. The display panel of claim 1, wherein the display panel comprises,
the compensation electrode is positioned in the array substrate, and the compensation electrode is positioned on one side of the first substrate, which is close to the color film substrate.
4. The display panel according to claim 3, wherein,
the compensation electrode is arranged on the same layer as the pixel electrode.
5. The display panel of claim 1, wherein the display panel comprises,
the compensation electrode is positioned in the color film substrate, and the compensation electrode is positioned at one side of the second substrate, which is close to the array substrate.
6. The display panel of claim 1, wherein the display panel comprises,
at least one of the compensation electrodes at least partially surrounds one of the pixel electrodes.
7. The display panel of claim 6, wherein the display panel comprises,
the compensation electrode comprises a first strip electrode extending along a first direction or/and a second strip electrode extending along a second direction, wherein the first direction and the second direction intersect.
8. The display panel of claim 6, wherein the display panel comprises,
the display panel comprises a plurality of sub-pixels, wherein the plurality of sub-pixels at least comprise a red sub-pixel, a green sub-pixel and a blue sub-pixel;
and at least one side of the red sub-pixel is provided with the compensation electrode along a third direction, and the third direction is parallel to the direction of the plane where the first substrate is positioned.
9. The display panel of claim 8, wherein the display panel comprises,
and at least one side of each sub-pixel is provided with the compensation electrode along the third direction.
10. The display panel of claim 1, wherein the display panel comprises,
the display panel comprises a display area and a non-display area arranged around the display area, at least part of the compensation electrodes are positioned in the display area, and the compensation electrodes are connected with each other;
the non-display area comprises a driving chip, the driving chip is electrically connected with the compensation electrode through a connecting wire, the connecting wire is electrically connected with the compensation electrode through a via hole, and the via hole is positioned in the non-display area.
11. A driving method of a display panel, wherein the driving method is used for driving the display panel;
the display panel comprises a color film substrate, an array substrate and a liquid crystal layer, wherein the color film substrate and the array substrate are oppositely arranged;
the array substrate comprises a first substrate, a common electrode and a pixel electrode, wherein the common electrode and the pixel electrode are positioned on one side of the first substrate, close to the color film substrate;
the color film substrate comprises a second substrate and a black matrix positioned on one side of the second substrate close to the array substrate;
the display panel further comprises a compensation electrode, and the compensation electrode at least partially overlaps the black matrix along a direction perpendicular to the plane of the first substrate;
the driving method includes:
a first signal is applied to the compensation electrode at least such that an electric field is formed between the compensation electrode and the common electrode.
12. The method for driving a display panel according to claim 11, wherein,
the first signal is applied to the compensation electrode in a first frame in which a data signal is applied to the pixel electrode and/or a first frame in which a voltage value of the data signal applied to the pixel electrode increases.
13. The method for driving a display panel according to claim 12, further comprising:
the time at which the first signal is applied to the compensation electrode at least once is one frame time.
14. The method for driving a display panel according to claim 13, further comprising:
the start time of applying the first signal to the compensation electrode is earlier than the start time of applying the data signal to the pixel electrode, or the start time of applying the first signal to the compensation electrode is synchronized with the start time of applying the data signal to the pixel electrode.
15. The method of driving a display panel according to claim 12, wherein,
the voltage value of the first signal is greater than or equal to the voltage value of the data signal applied to the pixel electrode.
16. The method for driving a display panel according to claim 11, wherein,
the first signal is applied to all of the compensation electrodes simultaneously.
17. The method for driving a display panel according to claim 11, wherein,
the first signal is applied to only a portion of the compensation electrodes.
18. A display device, characterized in that the display device comprises a display panel according to any one of claims 1-10.
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| JPH06118436A (en) * | 1992-10-06 | 1994-04-28 | Olympus Optical Co Ltd | Optical device using liquid crystal shutter |
| CN102466923A (en) * | 2010-10-29 | 2012-05-23 | 京东方科技集团股份有限公司 | Thin film transistor-liquid crystal display (TFT-LCD), driving method thereof and manufacture method of color film substrate |
| CN206162021U (en) * | 2016-11-18 | 2017-05-10 | 厦门天马微电子有限公司 | Display panel and display device |
| CN206258650U (en) * | 2016-12-02 | 2017-06-16 | 厦门天马微电子有限公司 | A kind of liquid crystal display panel and display device |
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| CN106814510A (en) * | 2015-11-27 | 2017-06-09 | 群创光电股份有限公司 | Liquid crystal display device |
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| JPH06118436A (en) * | 1992-10-06 | 1994-04-28 | Olympus Optical Co Ltd | Optical device using liquid crystal shutter |
| CN102466923A (en) * | 2010-10-29 | 2012-05-23 | 京东方科技集团股份有限公司 | Thin film transistor-liquid crystal display (TFT-LCD), driving method thereof and manufacture method of color film substrate |
| CN206162021U (en) * | 2016-11-18 | 2017-05-10 | 厦门天马微电子有限公司 | Display panel and display device |
| CN206258650U (en) * | 2016-12-02 | 2017-06-16 | 厦门天马微电子有限公司 | A kind of liquid crystal display panel and display device |
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