CN112882277B - Display panel, display device and driving method of display panel - Google Patents
Display panel, display device and driving method of display panel Download PDFInfo
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- CN112882277B CN112882277B CN202110210047.0A CN202110210047A CN112882277B CN 112882277 B CN112882277 B CN 112882277B CN 202110210047 A CN202110210047 A CN 202110210047A CN 112882277 B CN112882277 B CN 112882277B
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133553—Reflecting elements
- G02F1/133555—Transflectors
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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
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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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
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
- G02F1/13476—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells in which at least one liquid crystal cell or layer assumes a scattering state
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Abstract
The invention discloses a display panel, a display device and a driving method of the display panel, wherein the driving method comprises the steps of arranging a first liquid crystal module and a second liquid crystal module in a stacked mode; the first liquid crystal module comprises a first substrate, a first liquid crystal layer and a second substrate which are sequentially stacked; the first liquid crystal layer reflects or scatters light rays with different wave bands under the action of an electric field generated between the first substrate and the second substrate; the second liquid crystal module comprises a backlight module, a third substrate, a second liquid crystal layer and a fourth substrate which are sequentially stacked; the second liquid crystal layer controls the transmittance of emergent rays of the backlight module under the action of an electric field generated between the third substrate and the fourth substrate; the first liquid crystal module is positioned on one side of the fourth substrate, which is far away from the backlight module, so that transmission display and reflection display are realized.
Description
Technical Field
The present invention relates to the field of display panel technologies, and in particular, to a display panel, a display device, and a driving method of the display panel.
Background
Currently, liquid Crystal Displays (LCDs) have become the dominant Display in the market. Along with the development of liquid crystal displays, the demand of people for liquid crystal displays is also increasing. The traditional liquid crystal display panel has the advantages of good picture quality, light weight, low power consumption, small volume and the like.
With the technology becoming mature day by day, the demand of people is growing day by day, and ordinary electronic books and blackboards can only display single color, and displays which can not realize color mixing or white display and have single display function can not meet the market demand.
Disclosure of Invention
The embodiment of the invention provides a display panel, a display device and a driving method of the display panel, which are used for realizing the switching of functions such as reflective display and transmissive display and the like, so that the display panel can meet different applicable scenes.
In a first aspect, an embodiment of the present invention provides a display panel, including: the first liquid crystal module and the second liquid crystal module are arranged in a stacked mode;
the first liquid crystal module comprises a first substrate, a first liquid crystal layer and a second substrate which are sequentially stacked; the first liquid crystal layer reflects or scatters light rays with different wave bands under the action of an electric field generated between the first substrate and the second substrate;
the second liquid crystal module comprises a backlight module, a third substrate, a second liquid crystal layer and a fourth substrate which are sequentially stacked; the second liquid crystal layer controls the transmittance of the emergent light of the backlight module under the action of an electric field generated between the third substrate and the fourth substrate;
the first liquid crystal module is positioned on one side of the fourth substrate, which is far away from the backlight module.
Optionally, the first liquid crystal module includes a plurality of first pixel units arranged in an array, and each of the first pixel units includes a plurality of first sub-pixels;
the first liquid crystal module comprises a first electrode layer and a second electrode layer which are arranged in an insulating mode;
the first electrode layer comprises a plurality of first sub-electrodes, and each first sub-pixel corresponds to one first sub-electrode.
Optionally, the larger the electric field between the first sub-electrode and the second electrode layer is, the longer the wavelength of the light reflected by the first sub-pixel corresponding to the first sub-electrode is.
Optionally, the first liquid crystal layer comprises a bistable liquid crystal.
Optionally, the second liquid crystal module includes a plurality of second pixel units arranged in an array, and each of the second pixel units includes a plurality of second sub-pixels;
the second liquid crystal module comprises a third electrode layer and a fourth electrode layer which are arranged in an insulating mode.
In a second aspect, an embodiment of the present invention further provides a display device, including the display panel described in any one of the first aspects.
In a third aspect, an embodiment of the present invention further provides a driving method of a display panel, the driving method being applied to the display panel according to any one of claims 1 to 5, the driving method including:
controlling an electric field generated between the first substrate and the second substrate to enable the first liquid crystal layer to reflect or scatter light rays with different wave bands under the action of the electric field generated between the first substrate and the second substrate;
and controlling an electric field generated between the third substrate and the fourth substrate so that the second liquid crystal layer controls the transmittance of the emergent light of the backlight module under the action of the electric field generated between the third substrate and the fourth substrate.
Optionally, the first liquid crystal module includes a plurality of first pixel units arranged in an array, and each of the first pixel units includes a plurality of first sub-pixels; the first liquid crystal module comprises a first electrode layer and a second electrode layer which are arranged in an insulating mode; the first electrode layer comprises a plurality of first sub-electrodes, and each first sub-pixel corresponds to one first sub-electrode; the controlling of the electric field generated between the first substrate and the second substrate to enable the first liquid crystal layer to reflect or scatter light rays of different wave bands under the action of the electric field generated between the first substrate and the second substrate includes:
controlling the electric fields between the first sub-electrode corresponding to each sub-pixel and the second electrode layer to be different, so that the first liquid crystal layer reflects light rays with different wave bands under the action of the electric fields generated by the first sub-electrode corresponding to each first sub-pixel and the second electrode layer; or the like, or, alternatively,
and controlling an electric field between the first sub-electrode corresponding to each sub-pixel and the second electrode layer so that the first liquid crystal layer scatters light under the action of the electric fields generated by the first sub-electrode corresponding to each sub-pixel and the second electrode layer.
Optionally, the controlling an electric field generated between the third substrate and the fourth substrate to enable the second liquid crystal layer to control the transmittance of the light emitted from the backlight module under the effect of the electric field generated between the third substrate and the fourth substrate includes:
controlling an electric field generated between the third electrode layer and the fourth electrode layer to be a zero field so that the second liquid crystal layer controls the transmittance of emergent rays of the backlight module to be zero under the action of the electric field generated between the third substrate and the fourth substrate; or the like, or, alternatively,
and controlling an electric field generated between the third electrode layer and the fourth electrode layer to be a preset electric field so that the second liquid crystal layer controls the transmission of emergent rays of the backlight module under the action of the electric field generated between the third substrate and the fourth substrate.
Optionally, the larger the electric field between the first sub-electrode and the second electrode layer is, the longer the wavelength of the light reflected by the first sub-pixel corresponding to the first sub-electrode is
The display panel comprises a first liquid crystal module and a second liquid crystal module, a first liquid crystal layer of the first liquid crystal module reflects light rays in different wave bands or scatters the light rays under the action of an electric field generated between a first substrate and a second substrate, and a second liquid crystal layer of the second liquid crystal module controls the transmittance of emergent light rays of the backlight module under the action of an electric field generated between a third substrate and a fourth substrate. When the electric field between the third electrode layer and the fourth electrode layer is controlled to be a zero field, and the first liquid crystal layer of the first liquid crystal module reflects light rays with different wave bands under the action of the electric field generated between the first substrate and the second substrate, the display panel performs reflective display at the moment; when the second liquid crystal layer of the second liquid crystal module controls the emergent light of the backlight module to transmit through the second liquid crystal layer under the action of the electric field generated between the third substrate and the fourth substrate, the emergent light of the backlight module is scattered under the action of the electric field generated between the first substrate and the second substrate by controlling the first liquid crystal layer of the first liquid crystal module, so that the first liquid crystal module is in a transparent state, the transmission display of the display panel is realized, the display panel can realize the switching of functions such as reflection display, transmission display and the like, and different applicable scenes are met.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the invention;
fig. 2 is a schematic structural diagram of another display panel according to an embodiment of the invention;
fig. 3 is a schematic structural diagram of another display panel according to an embodiment of the invention;
fig. 4 is a schematic structural diagram of another display panel according to an embodiment of the invention;
fig. 5 is a schematic structural diagram of a display panel according to a second embodiment of the present invention;
fig. 6 is a schematic structural diagram of another display panel according to a second embodiment of the present invention;
fig. 7 is a schematic structural diagram of another display panel according to a second embodiment of the present invention;
fig. 8 is a schematic structural diagram of a display device according to a third embodiment of the present invention;
fig. 9 is a flowchart illustrating a driving method of a display panel according to a fourth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings, not all of them.
Example one
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention, as shown in fig. 1, the display panel includes a first liquid crystal module 100 and a second liquid crystal module 200 stacked in layers, the first liquid crystal module 100 includes a first substrate 11, a first liquid crystal layer 13, and a second substrate 12 stacked in sequence, the first liquid crystal layer 13 reflects light rays in different bands or scatters light rays under the action of an electric field generated between the first substrate 11 and the second substrate 12, the second liquid crystal module 200 includes a backlight module 21, a third substrate 22, a second liquid crystal layer 24, and a fourth substrate 23 stacked in sequence, the second liquid crystal layer 24 controls the transmittance of light rays emitted from the backlight module 21 under the action of an electric field generated between the third substrate 22 and the fourth substrate 23, wherein the first liquid crystal module 100 is located on a side of the fourth substrate 23 away from the backlight module 21.
As shown in fig. 1, the display panel according to the embodiment of the invention includes a first liquid crystal module 100, where the first liquid crystal module 100 includes a first substrate 11, a first liquid crystal layer 13 and a second substrate 12, and when an electric field is generated between the first substrate 11 and the second substrate 13 of the first liquid crystal module 100, the first liquid crystal layer 13 reflects or scatters light of different bands under the action of the electric field generated by the first substrate 11 and the second substrate 12, and the first liquid crystal layer is a bistable liquid crystal.
For example, as shown in fig. 1, the first substrate 11 and the second substrate 12 in different regions of the first liquid crystal module 100 are set to generate different voltage values, so that the first liquid crystal layer 13 corresponding to the different regions respectively reflects light beams in different wavelength bands. A part of the area in the first liquid crystal module 100 is set to reflect light R in a red waveband, a part of the area reflects light G in a green waveband, and a part of the area reflects light B in a blue waveband, at this time, the voltage value between the first substrate 11 and the second substrate 12 in the area corresponding to the reflected red waveband light is set to be a first voltage value, the voltage value between the first substrate 11 and the second substrate 12 in the area corresponding to the reflected green waveband light is set to be a second voltage value, and the voltage value between the first substrate 11 and the second substrate 12 in the area corresponding to the reflected blue waveband light is set to be a third voltage value. When external ambient light enters different regions of the first liquid crystal module 100 and the voltage values corresponding to the first substrate 11 and the second substrate 12 are different, the color of the light reflected by the first liquid crystal layer 13 is different, thereby realizing color reflective display of the display panel. In addition, when the voltage value between the first substrate 11 and the second substrate 12 in the regions corresponding to the different regions is set to be a fourth voltage value, the first liquid crystal layer 13 scatters the light under the action of the fourth voltage value generated by the first substrate 11 and the second substrate 12, and the first liquid crystal module is in a transparent state, as shown in fig. 2.
In other embodiments, when the voltage value of the electric field generated by the first substrate 11 and the second substrate 12 is the first voltage value V1, the first liquid crystal layer 13 reflects the light R in the red wavelength band under the effect of the first voltage value generated by the first substrate 11 and the second substrate 12. When the voltage value of the electric field generated by the first substrate 11 and the second substrate 12 is the second voltage value V2, the first liquid crystal layer 13 reflects the light G in the green wavelength band under the effect of the second voltage value generated by the first substrate 11 and the second substrate 12. When the voltage value of the electric field generated by the first substrate 11 and the second substrate 12 is the third voltage value V3, the first liquid crystal layer 13 reflects the light B in the blue wavelength band under the action of the third voltage value generated by the first substrate 11 and the second substrate 13. Different voltage values are respectively applied between the first substrate 11 and the second substrate 12, so that the first liquid crystal module 100 reflects light rays with different wave bands under the action of different electric fields, and colorful reflective display is realized.
It should be noted that fig. 3 exemplarily shows that the voltage value of the electric field generated between the first substrate 11 and the second substrate 12 is a first voltage value V1, the first liquid crystal layer 13 reflects the light R in the red wavelength band under the action of the first voltage value generated between the first substrate 11 and the second substrate 12, in other embodiments, the voltage value of the electric field generated between the first substrate 11 and the second substrate 12 may be set to a second voltage value, the first liquid crystal layer 13 reflects the light G in the green wavelength band under the action of the first voltage value generated between the first substrate 11 and the second substrate 12, or the voltage value of the electric field generated between the first substrate 11 and the second substrate 12 may be set to a third voltage value, and the first liquid crystal layer 13 reflects the light B in the blue wavelength band under the action of the first voltage value generated between the first substrate 11 and the second substrate 12.
With reference to fig. 1, the display panel further includes a second liquid crystal module 200, the second liquid crystal module 200 includes a backlight module 21, a third substrate 22, a second liquid crystal layer 24, and a fourth substrate 23, which are stacked in sequence, when an electric field is generated between the third substrate 22 and the fourth substrate 23, the second liquid crystal layer 24 located between the third substrate 22 and the fourth substrate 23 rotates under the action of the electric field, light emitted from the backlight module 21 can penetrate through the second liquid crystal layer 24, and the transmittance of the light emitted from the backlight module 21 is further controlled by controlling the magnitude of the electric field between the third substrate 22 and the fourth substrate 23.
For example, referring to fig. 1, when there is no electric field between the third substrate 22 and the fourth substrate 23, the second liquid crystal layer 24 is not deflected, the light emitted from the backlight module 21 cannot pass through the second liquid crystal layer 24, and the second liquid crystal module 200 is in a black state. When a voltage is applied to the third substrate 22 and the fourth substrate 23 to generate an electric field between the third substrate 22 and the fourth substrate 23, as shown in fig. 2, the light emitted from the backlight module 21 can pass through the second liquid crystal layer 24, and the second liquid crystal module 200 can realize normal display.
Fig. 1 exemplarily shows that different regions of the first liquid crystal module 100 respectively reflect light of different wavelength bands, and since there is no electric field between the third substrate 22 and the fourth substrate 23 in the second liquid crystal module 200, the second liquid crystal layer 24 does not deflect at this time, so that light emitted from the backlight module 21 cannot pass through the second liquid crystal layer 24, and the second liquid crystal module 200 is in a black state, in order to implement display of the display panel, light of different wavelength bands is respectively reflected by different regions of the first liquid crystal module 100, thereby implementing color reflective display of the display panel. Fig. 2 exemplarily shows that the first liquid crystal module 100 is in a transparent state when the first liquid crystal module 100 scatters light, when the first liquid crystal module 100 is in the transparent state, the backlight module 21 of the second liquid crystal module 200 is controlled to be turned on, and a voltage is applied to the third substrate 22 and the fourth substrate 23 to generate an electric field between the third substrate 22 and the fourth substrate 23, so that the second liquid crystal layer 24 rotates under the action of the electric field, and the light emitted from the backlight module 21 passes through the second liquid crystal layer 24, and since the first liquid crystal module 100 is in the transparent state, the light passing through the second liquid crystal layer 24 can pass through the first liquid crystal module 100, thereby implementing the transmissive display of the display panel.
It should be noted that fig. 1 exemplarily shows that a part of the area in the first liquid crystal module 100 reflects the light R in the red wavelength band, a part of the area reflects the light G in the green wavelength band, and a part of the area reflects the light B in the blue wavelength band, in other possible embodiments, a part of the area in the first liquid crystal module 100 reflects the light R in the red wavelength band, a part of the area reflects the light G in the green wavelength band, a part of the area reflects the light B in the blue wavelength band, and a part of the area scatters the light, as shown in fig. 4, wherein the area displayed in the reflective state can implement color display or white display, and the second liquid crystal module 200 corresponding to the area displayed in the scattering state is in the black state, and the area displayed in the scattering state is in the black state.
Further, still refer to fig. 4, partial area in first liquid crystal module 100 reflects light R of red wave band, partial area reflects light G of green wave band, when partial area reflects light B of blue wave band, the quantity that can reflect red wave band light R through control is the same with the quantity that reflects green wave band light G and the quantity that reflects blue wave band light B, and then make the light of different colours mix and form white display, also can control not the quantity that the colour light reflects inequality, realize display panel's colored reflection and show.
The display panel provided by the embodiment of the invention comprises a first liquid crystal module and a second liquid crystal module, wherein a first liquid crystal layer of the first liquid crystal module reflects light rays in different wave bands or scatters the light rays under the action of an electric field generated between a first substrate and a second substrate, and a second liquid crystal layer of the second liquid crystal module controls the transmittance of emergent light rays of the backlight module under the action of an electric field generated between a third substrate and a fourth substrate. When the first liquid crystal layer of the first liquid crystal module reflects light rays with different wave bands under the action of an electric field generated between the first substrate and the second substrate, the display panel performs reflective display at the moment, and when the second liquid crystal layer of the second liquid crystal module controls emergent light rays of the backlight module to penetrate through the second liquid crystal layer under the action of an electric field generated between the third substrate and the fourth substrate, the light rays are scattered under the action of the electric field generated between the first substrate and the second substrate by controlling the first liquid crystal layer of the first liquid crystal module at the moment, so that the first liquid crystal module is in a transparent state, the transmissive display of the display panel is realized, the display panel can realize the switching of functions such as reflective display and transmissive display, and different applicable scenes are met.
Example two
Optionally, on the basis of the above embodiment, fig. 5 is a schematic cross-sectional structure diagram of a display panel according to a second embodiment of the present invention, as shown in fig. 5, the first liquid crystal module 100 includes a plurality of first pixel units 10 arranged in an array, each of the first pixel units 10 includes a plurality of first sub-pixels 20 (fig. 5 exemplarily shows that each of the first pixel units 10 includes a first sub-pixel 20R, a first sub-pixel 20G, and a first sub-pixel 20B), the first liquid crystal module 100 includes a first electrode layer 30 and a second electrode layer 40 that are arranged in an insulating manner, the first electrode layer 30 includes a plurality of first sub-electrodes 31, and each of the first sub-pixels 20 corresponds to one of the first sub-electrodes 31.
Illustratively, as shown in fig. 5, the first liquid crystal module 100 includes a plurality of first pixel units 10 arranged in an array, each of the first pixel units 10 includes a plurality of first sub-pixels 20, the first liquid crystal module 100 includes a first electrode layer 30 and a second electrode layer 40 arranged in an insulating manner, the first electrode layer 30 includes a plurality of first sub-electrodes 31, and each of the first sub-pixels 20 corresponds to one of the first sub-electrodes 31. When the same voltage is applied to the second electrode layers 40 corresponding to different first sub-pixels 20, the voltage value between the first substrate 11 and the second substrate 13 corresponding to different first sub-pixels 20 is related to the voltage value of the first sub-electrode 31 electrically connected to the first sub-pixel 20, and when different voltage values are applied to the first sub-electrodes 31 corresponding to different first sub-pixels 20, the first liquid crystal layers 13 in the regions corresponding to different first sub-pixels reflect the light beams in different wavelength bands. For example, as shown in fig. 5, when each pixel unit 10 in the first liquid crystal module 100 includes three first sub-pixels, different voltage values are applied to the first sub-electrodes 31 corresponding to the first sub-pixels 20, and then the external ambient light enters different areas of the first liquid crystal module 100, the voltage values between the first substrate 11 and the second substrate 12 corresponding to the first sub-pixels 20 in the different areas are different, and the colors of the light reflected by the first liquid crystal layer 13 corresponding to the areas where the different first sub-pixels 20 are located are different, so as to implement color reflective display of the display panel. When a first voltage value is applied between the first sub-electrode 31 and the second electrode layer corresponding to the first sub-pixel 20R, the first sub-pixel 20R reflects light of a red wavelength band, when a second voltage value is applied between the first sub-electrode 31 and the second electrode layer corresponding to the first sub-pixel 20G, the first sub-pixel 20R reflects light of a green wavelength band, and when a third voltage value is applied between the first sub-electrode 31 and the second electrode layer corresponding to the first sub-pixel 20B, the first sub-pixel 20B reflects light of a blue wavelength band. In addition, when another voltage value is applied to the electrically connected first sub-electrode 31 corresponding to each first sub-pixel 20 in each pixel unit 10, at this time, a fourth voltage is applied between the first substrate 11 and the second substrate 12 corresponding to different first sub-pixels 20, the first liquid crystal layer 13 scatters light in different wavelength bands under the action of the electric field generated by the first substrate 11 and the second substrate 12, and the first liquid crystal module 100 is in a transparent state.
It should be noted that, in fig. 5, the first electrode layer 30 is exemplarily disposed on the side of the first substrate 11 close to the first liquid crystal layer 13, and the second electrode layer 40 is disposed on the side of the second substrate 12 close to the first liquid crystal layer 13, in other embodiments, the first electrode layer 30 and the second electrode layer 40 may also be disposed on the same side of the first liquid crystal layer 13, and the first electrode layer 30 and the second electrode layer 40 are disposed in an insulating manner, and the specific positions of the first electrode layer 30 and the second electrode layer 40 are not limited in the embodiments of the present invention, as long as it is ensured that when a voltage is applied to the first electrode layer 30 and the second electrode layer 40, the first liquid crystal layer 3 scatters or reflects light of different wavelength bands under the action of an electric field generated between the first substrate 11 and the second substrate 12.
Optionally, the larger the electric field between the first sub-electrode 31 and the second electrode layer 40 is, the longer the wavelength of the light reflected by the first sub-pixel 20 corresponding to the first sub-electrode 31 is.
For example, referring to fig. 5, when each pixel unit in the first liquid crystal module 100 includes three first sub-pixels 20, different voltage values are applied to the first sub-electrodes 31 corresponding to different first sub-pixels 20, and the voltage applied to the second electrode layer 40 is the same, where the voltage between the first substrate 11 and the second substrate 12 corresponding to the first sub-pixels 20 at different positions is related to the voltage value applied to the first sub-electrodes 31, and when the voltage value applied to the first sub-electrodes 31 is larger, the wavelength of the light reflected by the first sub-pixels 20 corresponding to the first sub-electrodes 31 is longer, and the different first sub-pixels 20 are arranged to reflect the light of the colors corresponding to different bands, respectively, so as to implement color reflective display of the display panel.
Optionally, the first liquid crystal layer 13 comprises a bistable liquid crystal.
Because the bistable liquid crystal has two structural states of a reflecting state and a scattering state, the two structural states can be mutually converted under the action of a certain electric field. When the bistable liquid crystal is in a reflective state, the arrangement directions of the bistable liquid crystal are different, and the reflected visible light spectrums are different. When the bistable liquid crystal is in a scattering state, the bistable liquid crystal can scatter light rays of different wave bands to realize a transparent state.
Wherein when the bistable liquid crystal is in a reflective state, the wavelength λ of incident light is 0 Satisfying the Bragg equation: lambda [ alpha ] 0 ＝n·P 0 Where n is the average refractive index of the bistable liquid crystal, P 0 Is the pitch of the bistable liquid crystal material. The wavelength of the reflected light is different for bistable liquid crystal materials of different pitches. It is known from the Bragg equation that the pitch of a bistable liquid crystal can be changed by changing the magnitude of the electric field to cause the bistable liquid crystal to reflect different colors of light, and by applying different voltage values to the bistable liquid crystal to change the pitch of the bistable liquid crystal.
Optionally, on the basis of the above embodiment, fig. 6 is a schematic cross-sectional structure diagram of another display panel according to the second embodiment of the present invention, as shown in fig. 6, the second liquid crystal module 200 includes a plurality of second pixel units 50 arranged in an array, each of the second pixel units 50 includes a plurality of second sub-pixels 60, and the second liquid crystal module 200 includes a third electrode layer 70 and a fourth electrode layer 80 which are arranged in an insulating manner.
For example, as shown in fig. 6, by disposing the second liquid crystal module 200 to include a plurality of second pixel units 50 arranged in an array, each second pixel unit 50 includes a plurality of second sub-pixels 60, and the second liquid crystal module 200 includes a third electrode layer 70 and a fourth electrode layer 80 disposed in an insulating manner, when the first liquid crystal layer 13 of the first liquid crystal module 100 scatters light under the action of an electric field generated between the first substrate 11 and the second substrate 12, and the first liquid crystal module 100 is in a transparent state, the transmissive display of the display panel can be realized through the plurality of second sub-pixels 60 in the second liquid crystal module 200.
It should be noted that, in fig. 6, the third electrode layer 70 is exemplarily disposed on the side of the third substrate 22 close to the second liquid crystal layer 24, and the fourth electrode layer 80 is disposed on the side of the fourth substrate 23 close to the second liquid crystal layer 24, in other embodiments, the third electrode layer 70 and the fourth electrode layer 80 may also be disposed on the same side of the second liquid crystal layer 24, and the third electrode layer 70 and the fourth electrode layer 80 are disposed in an insulating manner, and the specific positions of the third electrode layer 70 and the fourth electrode layer 80 are not limited in the embodiments of the present invention, as long as it is ensured that when a voltage is applied to the third electrode layer 70 and the fourth electrode layer 80, the second liquid crystal layer 24 controls the transmittance of the light emitted from the backlight module 21 under the action of an electric field generated between the third substrate 70 and the fourth substrate 80.
For example, fig. 6 shows that there is no electric field between the third electrode layer 70 and the fourth electrode layer 80 in the second liquid crystal module 200, the second liquid crystal layer 24 does not rotate under the action of a zero field, the light emitted from the backlight module 21 cannot penetrate through the second liquid crystal layer 24, and different voltage values are respectively applied to different areas between the first substrate 11 and the second substrate 12, so that the first liquid crystal module 100 reflects light of different bands under the action of different electric fields, thereby implementing a multi-color reflective display. Fig. 7 shows that the first liquid crystal layer 13 scatters light incident on the display panel under the action of the electric field generated by the first substrate 11 and the second substrate 12, so that the first liquid crystal module is in a transparent state, and further, the backlight module 21 of the second liquid crystal module 200 is controlled to be turned on, and a voltage is applied to the third electrode layer 70 and the fourth electrode layer 80, so that an electric field is generated between the third substrate 22 and the fourth substrate 23, so that the second liquid crystal layer 24 rotates under the action of the electric field, and the light emitted from the backlight module 21 passes through the second liquid crystal layer 24, because the first liquid crystal module 100 is in the transparent state, at this time, the light passing through the second liquid crystal layer 24 can pass through the first liquid crystal module 100, thereby realizing transmissive display of the display panel.
It should be noted that fig. 6 and fig. 7 exemplarily show that the second liquid crystal module 200 includes a plurality of second pixel units 50 arranged in an array, each second pixel unit 50 includes a plurality of second sub-pixels 60, the second liquid crystal module 200 includes a third electrode layer 70 and a fourth electrode layer 80 arranged in an insulating manner, in a specific embodiment, the second liquid crystal module includes an array substrate and a color filter substrate arranged oppositely, where the array substrate includes a first glass substrate, and scan lines, data lines and driving transistors arranged on the first glass substrate in a crisscross manner, and when the display panel is in a transmissive display state, the scan lines output scan control signals to control the driving transistors electrically connected to the respective second sub-pixels to be in a conducting state, and the data lines output data signals to the pixel electrodes of the respective second sub-pixels through the driving transistors. When the second liquid crystal layer rotates under the action of an electric field, light emitted by the backlight module 21 penetrates through the second liquid crystal layer, and the color filter layer is arranged on the color film substrate, so that color display is realized after the light penetrating through the second liquid crystal layer passes through the color filter layer, and further color transmission display of the display panel is realized.
EXAMPLE III
Optionally, on the basis of the foregoing embodiment, fig. 8 is a schematic structural diagram of a display device according to a third embodiment of the present invention, and as shown in fig. 8, the display device includes the display panel 01 according to the third embodiment of the present invention, so that the display device also has the beneficial effects of the display panel according to the third embodiment of the present invention, and the same points may be understood with reference to the foregoing description and are not repeated herein.
It should be noted that the display device provided in the embodiment of the present invention may be a color electronic book, a teaching color plate, a mobile phone, a tablet computer, a smart wearable device (e.g., a smart watch), and a display device known by those skilled in the art, and the embodiment of the present invention is not limited thereto.
Example four
Optionally, on the basis of the foregoing embodiment, an embodiment of the present invention further provides a driving method for a display panel, where the driving method is applied to the display panel described in any of the foregoing embodiments, and the driving method includes:
and S110, controlling an electric field generated between the first substrate and the second substrate so that the first liquid crystal layer reflects or scatters light rays with different wave bands under the action of the electric field generated between the first substrate and the second substrate.
When the electric field is generated between the first substrate and the second substrate of the first liquid crystal module, the first liquid crystal layer can reflect or scatter light rays with different wave bands under the action of the electric field generated by the first substrate and the second substrate.
Illustratively, when the voltage value of the electric field generated by the first substrate and the second substrate is a first voltage value, the first liquid crystal layer reflects the light in the red wavelength band under the action of the first voltage value generated by the first substrate and the second substrate. When the voltage value of the electric field generated by the first substrate and the second substrate is a second voltage value, the first liquid crystal layer reflects the light of the green light wave band under the action of the second voltage value generated by the first substrate and the second substrate. When the voltage value of the electric field generated by the first substrate and the second substrate is a third voltage value, the first liquid crystal layer reflects the light of the blue light wave band under the action of the third voltage value generated by the first substrate and the second substrate. Different voltage values are respectively applied between the first substrate and the second substrate, so that the first liquid crystal module reflects light rays with different wave bands under the action of different electric fields, or the first substrate and the second substrate in different areas in the first liquid crystal module are set to generate different voltage values, and the first liquid crystal layers corresponding to the different areas respectively reflect the light rays with different wave bands.
When the voltage value of the electric field generated by the first substrate and the second substrate is a fourth voltage value, the first liquid crystal layer scatters light under the action of the fourth voltage value generated by the first substrate and the second substrate, and the first liquid crystal module is in a transparent state.
And S120, controlling an electric field generated between the third substrate and the fourth substrate so that the second liquid crystal layer controls the transmittance of the emergent light of the backlight module under the action of the electric field generated between the third substrate and the fourth substrate.
When an electric field is generated between the third substrate and the fourth substrate, the second liquid crystal layer positioned between the third substrate and the fourth substrate can rotate under the action of the electric field, and the light emitted by the backlight module can penetrate through the second liquid crystal layer and further control the transmittance of the light emitted by the backlight module by controlling the size of the electric field between the third substrate and the fourth substrate.
Illustratively, when there is no electric field between the third substrate and the fourth substrate, the second liquid crystal layer is not deflected, the light emitted from the backlight module cannot pass through the second liquid crystal layer, and the second liquid crystal module is in a black state. When voltage is applied to the third substrate and the fourth substrate, an electric field is generated between the third substrate and the fourth substrate, at the moment, light emitted by the backlight module can penetrate through the second liquid crystal layer, and the second liquid crystal module can realize normal display.
Optionally, the first liquid crystal module includes a plurality of first pixel units arranged in an array, each first pixel unit includes a plurality of first sub-pixels, the first liquid crystal module includes a first electrode layer and a second electrode layer that are arranged in an insulating manner, the first electrode layer includes a plurality of first sub-electrodes, and each first sub-pixel corresponds to one first sub-electrode. Controlling the electric field generated between the first substrate and the second substrate so that the first liquid crystal layer reflects or scatters light rays of different wave bands under the action of the electric field generated between the first substrate and the second substrate comprises:
controlling the electric fields between the first sub-electrode and the second electrode layer corresponding to each sub-pixel to be different, so that the first liquid crystal layer reflects the light rays in different wave bands under the action of the electric fields generated by the first sub-electrode and the second electrode layer corresponding to each first sub-pixel; or, the electric field between the first sub-electrode and the second electrode layer corresponding to each sub-pixel is controlled, so that the first liquid crystal layer scatters the light under the action of the electric field generated by the first sub-electrode and the second electrode layer corresponding to each first sub-pixel.
Referring to fig. 5, the first liquid crystal module 100 includes a plurality of first pixel units 10 arranged in an array, each first pixel unit 10 includes a plurality of first sub-pixels 20, the first liquid crystal module 100 includes a first electrode layer 30 and a second electrode layer 40 arranged in an insulating manner, the first electrode layer 30 includes a plurality of first sub-electrodes 31, and each first sub-pixel 20 corresponds to one first sub-electrode 31. When the voltages applied to the second electrode layers 40 corresponding to different first sub-pixels 20 are different, the voltage value between the first substrate 11 and the second substrate 13 corresponding to different first sub-pixels 20 is related to the voltage value of the first sub-electrode 31 corresponding to the first sub-pixel 20, and when different voltage values are applied to the first sub-electrodes 31 corresponding to different first sub-pixels 20, the first liquid crystal layers 13 in the regions corresponding to different first sub-pixels respectively reflect the light beams in different wavelength bands. For example, as shown in fig. 5, when each pixel unit 10 in the first liquid crystal module 100 includes three first sub-pixels, the first voltage value is applied to the first sub-electrodes 31 corresponding to the first sub-pixels 20, and then the external ambient light enters different areas of the first liquid crystal module 100, the voltage values between the first substrate 11 and the second substrate 12 corresponding to the first sub-pixels 20 in the different areas are different, and the colors of the light reflected by the first liquid crystal layer 13 corresponding to the areas where the different first sub-pixels 20 are located are different, so as to implement the color reflective display of the display panel. In addition, when another voltage value is applied to the electrically connected first sub-electrode 31 corresponding to each first sub-pixel 20 in each pixel unit 10, at this time, the voltage value between the first substrate 11 and the second substrate 12 corresponding to different first sub-pixels 20 is a fourth voltage, the first liquid crystal layer 13 scatters light under the action of the electric field generated by the first substrate 11 and the second substrate 12, and the first liquid crystal module 100 is in a transparent state.
Optionally, the larger the electric field between the first sub-electrode and the second electrode layer is, the longer the wavelength of the light reflected by the first sub-pixel corresponding to the first sub-electrode is.
Optionally, the controlling an electric field generated between the third substrate and the fourth substrate to control the transmittance of the backlight module outgoing light rays by the second liquid crystal layer under the action of the electric field generated between the third substrate and the fourth substrate includes:
and controlling the electric field generated between the third electrode layer and the fourth electrode layer to be a zero field so as to control the transmittance of the emergent light of the backlight module to be zero under the action of the electric field generated between the third substrate and the fourth substrate by the second liquid crystal layer. Or, the electric field generated between the third electrode layer and the fourth electrode layer is controlled to be a preset electric field, so that the second liquid crystal layer controls the transmission of the emergent light of the backlight module under the action of the electric field generated between the third substrate and the fourth substrate.
It should be noted that, in the above embodiments, when the electric field generated between the third electrode layer and the fourth electrode layer is set to be a zero field, the second liquid crystal module is in a black state, and when the electric field generated between the third electrode layer and the fourth electrode layer is set, the second liquid crystal module is in a normal display state, in other embodiments, when the electric field generated between the third electrode layer and the fourth electrode layer is set to be a zero field, the second liquid crystal module is in a display state, and when the electric field generated between the third electrode layer and the fourth electrode layer is set, the second liquid crystal module is in a black state, which is not specifically limited in the embodiments of the present invention. When the electric field generated between the third electrode layer and the fourth electrode layer is zero field, the second liquid crystal module is in a display state, if the display panel needs to realize reflective display, the electric field can be generated between the third electrode layer and the fourth electrode layer at the moment, so that the second liquid crystal module is in a black state, and when the display panel needs to realize transmissive display, the second liquid crystal module is in a display state by setting no electric field between the third electrode layer and the fourth electrode layer at the moment.
It is to be noted that the foregoing description is only exemplary of the invention and that the principles of the technology may be employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (8)
1. A display panel is characterized by comprising a first liquid crystal module and a second liquid crystal module which are arranged in a laminated mode;
the first liquid crystal module comprises a first substrate, a first liquid crystal layer and a second substrate which are sequentially stacked; the first liquid crystal layer reflects or scatters light rays with different wave bands under the action of an electric field generated between the first substrate and the second substrate, so that the display panel performs reflective display or transmissive display;
the second liquid crystal module comprises a backlight module, a third substrate, a second liquid crystal layer and a fourth substrate which are sequentially stacked; the second liquid crystal layer controls the transmittance of emergent rays of the backlight module under the action of an electric field generated between the third substrate and the fourth substrate;
the first liquid crystal module is positioned on one side of the fourth substrate, which is far away from the backlight module;
the first liquid crystal module comprises a plurality of first pixel units which are arranged in an array mode, and each first pixel unit comprises a plurality of first sub-pixels;
the first liquid crystal module comprises a first electrode layer and a second electrode layer which are arranged in an insulating mode;
the first electrode layer comprises a plurality of first sub-electrodes, and each first sub-pixel corresponds to one first sub-electrode; when the same voltage is applied to the second electrode layers corresponding to different first sub-pixels and different voltage values are applied to the first sub-electrodes corresponding to different first sub-pixels, the pitches of the first liquid crystal layer in the regions corresponding to different first sub-pixels are different, and the first liquid crystal layer reflects light rays in different wave bands.
2. The display panel according to claim 1, wherein the larger the electric field between the first sub-electrode and the second electrode layer, the longer the wavelength of the light reflected by the first sub-pixel corresponding to the first sub-electrode.
3. The display panel according to claim 1, wherein the first liquid crystal layer comprises bistable liquid crystal.
4. The display panel according to claim 1, wherein the second liquid crystal module comprises a plurality of second pixel units arranged in an array, each of the second pixel units comprising a plurality of second sub-pixels;
the second liquid crystal module comprises a third electrode layer and a fourth electrode layer which are arranged in an insulating mode.
5. A display device characterized by comprising the display panel according to any one of claims 1 to 4.
6. A driving method of a display panel, which is applied to the display panel according to any one of claims 1 to 4, the driving method comprising:
controlling an electric field generated between the first substrate and the second substrate to enable the first liquid crystal layer to reflect or scatter light rays with different wave bands under the action of the electric field generated between the first substrate and the second substrate;
controlling an electric field generated between the third substrate and the fourth substrate to enable the second liquid crystal layer to control the transmittance of emergent rays of the backlight module under the action of the electric field generated between the third substrate and the fourth substrate, so that the display panel performs reflective display or transmissive display;
the first liquid crystal module comprises a plurality of first pixel units which are arranged in an array mode, and each first pixel unit comprises a plurality of first sub-pixels; the first liquid crystal module comprises a first electrode layer and a second electrode layer which are arranged in an insulating mode; the first electrode layer comprises a plurality of first sub-electrodes, and each first sub-pixel corresponds to one first sub-electrode; the controlling of the electric field generated between the first substrate and the second substrate to enable the first liquid crystal layer to reflect or scatter light rays of different wave bands under the action of the electric field generated between the first substrate and the second substrate includes:
controlling an electric field between the first sub-electrode and the second electrode layer corresponding to each sub-pixel, so that the first liquid crystal layer reflects light rays with different wave bands under the action of different electric fields generated by the first sub-electrode and the second electrode layer corresponding to each first sub-pixel; or the like, or, alternatively,
controlling an electric field between the first sub-electrode and the second electrode layer corresponding to each sub-pixel, so that the first liquid crystal layer scatters light under the action of the electric field generated by the first sub-electrode and the second electrode layer corresponding to each first sub-pixel;
when the same voltage is applied to the second electrode layers corresponding to different first sub-pixels and different voltage values are applied to the first sub-electrodes corresponding to different first sub-pixels, the pitches of the first liquid crystal layer in the regions corresponding to different first sub-pixels are different, and the first liquid crystal layer reflects light rays in different wave bands.
7. The method according to claim 6, wherein the controlling the electric field generated between the third substrate and the fourth substrate so that the second liquid crystal layer controls the transmittance of the light emitted from the backlight module under the action of the electric field generated between the third substrate and the fourth substrate comprises:
controlling an electric field generated between a third electrode layer and a fourth electrode layer to be a zero field so that the second liquid crystal layer controls the transmittance of emergent rays of the backlight module to be zero under the action of the electric field generated between the third substrate and the fourth substrate; or the like, or, alternatively,
and controlling an electric field generated between the third electrode layer and the fourth electrode layer to be a preset electric field so that the second liquid crystal layer controls the transmission of emergent rays of the backlight module under the action of the electric field generated between the third substrate and the fourth substrate.
8. The driving method according to claim 6, wherein the larger the electric field between the first sub-electrode and the second electrode layer is, the longer the wavelength of the light reflected by the first sub-pixel corresponding to the first sub-electrode is.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102981308A (en) * | 2012-11-30 | 2013-03-20 | 京东方科技集团股份有限公司 | Transparent display |
| CN106094303A (en) * | 2016-06-16 | 2016-11-09 | 京东方科技集团股份有限公司 | A kind of display panels and manufacture method, display device |
| CN108051946A (en) * | 2018-01-02 | 2018-05-18 | 京东方科技集团股份有限公司 | A kind of display device |
| CN108415199A (en) * | 2018-02-06 | 2018-08-17 | 昆山龙腾光电有限公司 | Liquid crystal display panel and liquid crystal display device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102981308A (en) * | 2012-11-30 | 2013-03-20 | 京东方科技集团股份有限公司 | Transparent display |
| CN106094303A (en) * | 2016-06-16 | 2016-11-09 | 京东方科技集团股份有限公司 | A kind of display panels and manufacture method, display device |
| CN108051946A (en) * | 2018-01-02 | 2018-05-18 | 京东方科技集团股份有限公司 | A kind of display device |
| CN108415199A (en) * | 2018-02-06 | 2018-08-17 | 昆山龙腾光电有限公司 | Liquid crystal display panel and liquid crystal display device |
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