CN114005368B - Display panel and display device - Google Patents
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- CN114005368B CN114005368B CN202111313260.0A CN202111313260A CN114005368B CN 114005368 B CN114005368 B CN 114005368B CN 202111313260 A CN202111313260 A CN 202111313260A CN 114005368 B CN114005368 B CN 114005368B
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- 239000004973 liquid crystal related substance Substances 0.000 claims description 73
- 239000000758 substrate Substances 0.000 claims description 60
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000031700 light absorption Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 description 6
- 230000010287 polarization Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 229920000128 polypyrrole Polymers 0.000 description 1
- 229920000123 polythiophene Polymers 0.000 description 1
Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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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
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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
-
- 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
- G02F1/135—Liquid crystal cells structurally associated with a photoconducting or a ferro-electric layer, the properties of which can be optically or electrically varied
- G02F1/1351—Light-absorbing or blocking layers
-
- 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
- G02F1/135—Liquid crystal cells structurally associated with a photoconducting or a ferro-electric layer, the properties of which can be optically or electrically varied
- G02F1/1352—Light-reflecting layers
-
- 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
- G02F1/15—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 an electrochromic effect
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a display panel and a display device, which relate to the technical field of display components.
Description
Technical Field
The invention relates to the technical field of display components, in particular to a display panel and a display device.
Background
With the rapid development of display technology, the liquid crystal display technology has become the most widely used display technology at present. Meanwhile, as the demands of people for display technology are raised, the foldable display panel is gradually brought into the field of vision of people.
For the present folding display panel, it can be generally divided into two types, specifically, an inside fold and an outside fold according to different folding manners. For the technical scheme of adopting the inward folding, after the display panel is folded, the display surface is positioned at the inner side of the space surrounded by the whole display panel. Compared with the technical scheme of outward folding, the technical scheme of inward folding can protect the display surface to a certain extent, and the reliability risks of abrasion and drop damage of the display surface are relatively low, so that the current acceptance degree and popularity are higher. However, it is apparent that, in the above-described configuration, once the display panel is in the folded state, the user cannot smoothly observe the display surface. Therefore, at present, a small display screen is additionally arranged on the display panel, and after the display panel is folded, the small display screen is positioned on the folded part of the display panel, so that the whole display panel can still display pictures for users in a folded state. However, the small display screen mainly adopts a transmission display mode, which can improve the power consumption of the whole display panel and reduce the performance of the display panel and the display device.
Disclosure of Invention
In summary, the technical problem to be solved by the present invention is to provide a display panel, which is lower in power consumption while realizing double-sided display.
The technical scheme adopted by the invention for solving the technical problems is as follows:
in a first aspect, the present application provides a display panel comprising a first display surface and a second display surface disposed opposite each other, the display panel having at least a reflective display mode for reflective display of the first display surface, the display panel having an unfolded state and a folded state, wherein when the display panel is in the folded state, the first display surface is folded outwardly and the second display surface is folded inwardly.
Optionally, in some embodiments of the present application, the display panel further has a transmissive display mode for transmissive displaying the second display surface.
Optionally, in some embodiments of the present application, when the display panel is in the unfolded state, the first display surface and the second display surface are parallel to each other.
Optionally, in some embodiments of the present application, the display panel includes an electrochromic layer, a backlight module, a liquid crystal substrate layer, and a reflective layer sequentially disposed along a direction from the first display surface to the second display surface;
wherein the electrochromic layer is configured to be switchable between a light absorbing state and a transparent state, and the reflective layer is configured to be switchable between a transmissive state and a reflective state.
Optionally, in some embodiments of the present application, when the display panel is in the reflective display mode, the electrochromic layer is in the transparent state, and the reflective layer is in the reflective state, so that external light passes through the electrochromic layer and the liquid crystal substrate layer and is reflected to the outside by the reflective layer.
Optionally, in some embodiments of the present application, a first polarizing layer is further included, and the first polarizing layer is disposed between the liquid crystal substrate layer and the electrochromic layer, where the liquid crystal substrate layer is configured to control the external light reflected by the reflective layer to pass through or be blocked by the first polarizing layer.
Optionally, in some embodiments of the present application, when the display panel is in the transmissive display mode, the electrochromic layer is in the light absorbing state, so that the backlight emitted by the backlight module passes through the liquid crystal substrate layer and the reflective layer and then is emitted.
Optionally, in some embodiments of the present application, the backlight module further includes a first polarizing layer and a second polarizing layer, where the first polarizing layer is disposed between the backlight module and the liquid crystal substrate layer, and the second polarizing layer is disposed on a side of the liquid crystal substrate layer opposite to the backlight module, and the liquid crystal substrate layer is configured to control the backlight passing through the first polarizing layer to pass through or be blocked by the second polarizing layer.
Optionally, in some embodiments of the present application, the second polarizing layer is disposed between the liquid crystal substrate layer and the reflective layer.
Optionally, in some embodiments of the present application, the liquid crystal substrate layer includes a first substrate, a liquid crystal layer, and a second substrate stacked in a direction from the first display surface to the second display surface.
In a second aspect, the present application provides a display device comprising a display panel as described in the first aspect.
In summary, due to the adoption of the technical scheme, the invention at least comprises the following beneficial effects:
the invention mainly provides a display panel and a display device, in the embodiment provided by the invention, the display panel can be switched between a folded state and an unfolded state, on the basis, the display panel is provided with a first display surface and a second display surface which are arranged opposite to each other, the display panel is provided with a reflective display mode for enabling the first display surface to reflect and display, when the whole display panel is in the folded state, the first display surface is folded outwards, and displays pictures to a user in a reflective display mode, so that the power consumption is lower, the display effect is good under a high-brightness environment, and the display device is more in line with the use habit of the user.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following description will simply refer to the drawings that are required to be used in the embodiments. The drawings in the following description are only some of the embodiments of the present application and other drawings may be derived from these drawings by those skilled in the art without the exercise of inventive faculty.
Fig. 1 is a schematic structural diagram of a display panel in embodiment 1 according to the present invention, where the display panel is in a folded state;
fig. 2 is a schematic structural diagram of the display panel in embodiment 1 according to the present invention, where the display panel is in an unfolded state;
FIG. 3 is a schematic cross-sectional view of the display panel of embodiment 1 according to the present invention, wherein the display panel is in a reflective display mode for displaying the first display surface in a reflective manner, and no current is applied to the liquid crystal layer;
FIG. 4 is a schematic cross-sectional view of a display panel according to embodiment 1 of the present invention, wherein the display panel is in a reflective display mode for displaying the first display surface in a reflective manner, and a current is applied to the liquid crystal layer;
fig. 5 is a schematic cross-sectional view of the display panel in embodiment 1 provided by the present invention, wherein the display panel is in a transmissive display mode for transmissive displaying the second display surface, and a current is applied to the liquid crystal layer;
fig. 6 is a schematic cross-sectional view of the display panel in embodiment 1 provided by the present invention, where the display panel is in a transmissive display mode for transmissive displaying the second display surface, and no current is applied to the liquid crystal layer.
Reference numerals illustrate:
1-a display panel, 1 a-a first display surface, 1 b-a second display surface;
11-electrochromic layer, 12-backlight module, 13-liquid crystal substrate layer, 131-first substrate, 132-liquid crystal layer, 133-second substrate, 14-reflecting layer, 151-first polarizing layer, 152-second polarizing layer.
Detailed Description
Technical solutions in the embodiments of the present application will be clearly and comprehensively described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a unique orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or the inclusion of a number of indicated features. Thus, a feature defining "a first" or "a second" may include, either explicitly or implicitly, one or more features. In the description of the present invention, the meaning of "a plurality" is two or more unless explicitly defined otherwise.
In the application, the term "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as exemplary is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the invention. In the following description, details are set forth for purposes of explanation. It will be apparent to one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and processes have not been described in detail so as not to obscure the description of the invention with unnecessary detail. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles disclosed herein.
The main body of the present embodiment is a display device including a display panel 1.
Referring to fig. 1 and 2, in the present embodiment, the display panel 1 includes a first display surface 1a and a second display surface 1b disposed opposite to each other, the display panel 1 has at least a reflective display mode for making the first display surface 1a reflective display, and the display panel 1 has an unfolded state and a folded state, wherein the first display surface 1a is folded outwards and the second display surface 1b is folded inwards when the display panel 1 is in the folded state.
In the present embodiment, the display panel 1 is provided with the first display surface 1a and the second display surface 1b, so that the display panel 1 for double-sided display is configured, and at the same time, the display panel 1 is configured to be foldable, and is switched between an unfolded state and a folded state by an external force.
When the display panel 1 is in the folded state, the first display surface 1a is folded outwardly and constitutes a main viewing surface for a user, and at this time, when the display panel 1 is turned on and adopts the reflective display mode, the first display surface 1a performs display. Compared with the conventional method, the display screen with independent backlight is used as the main observation surface of the user when the whole display panel 1 is folded, and the embodiment displays the picture in a reflective display mode with lower power consumption, so that the display panel 1 has lower power consumption and better performance.
Referring to fig. 1 again, the first display surface 1a is folded outwards, that is, after the whole display panel 1 is folded, the first display surface 1a is located above the outer contour of the display panel 1 in the folded state. Correspondingly, the second display surface 1b is folded inwards, that is, after the whole display panel 1 is folded, the second display surface 1b is positioned above the inner contour of the display panel 1 in the folded state.
In addition, the implementation personnel can select specific technical means for realizing the folding of the display panel 1 according to own requirements, and the application is not particularly limited. For example, in another embodiment, a hinge is provided at a middle portion of the display panel 1 for rotating portions of the display panel 1 at both sides of the hinge around a rotation center of the hinge, thereby switching the entire display panel 1 between a folded state and an unfolded state. Whereas in the present embodiment the entire display panel 1 is a flexible display panel.
For the unfolded state, the operator can arbitrarily set the posture of the display panel 1 in the unfolded state as long as it is unfolded to a certain extent as compared with the display panel 1 in the folded state. For example, in another embodiment, the entire display panel 1 is in an obtuse angle shape when the display panel 1 is in the unfolded state. Referring again to fig. 2, in the present embodiment, when the display panel 1 is in the unfolded state, the first display surface 1a and the second display surface 1b are parallel to each other.
The first display surface 1a may be one which can realize only a reflective display, or may be one which can be switched from a reflective display to a transmissive display or a semi-reflective semi-transmissive display, and the present application is not particularly limited thereto.
The second display surface 1b may be a reflective display. For example, in another embodiment, the display panel 1 further has a mode in which both the first display surface 1a and the second display surface 1b are reflective-displayed. It will be appreciated that for reflective displays it is dependent on the intensity of ambient light. If the first display surface 1a and the second display surface 1b both adopt reflective display, the user is difficult to observe clear pictures on the first display surface 1a and the second display surface 1b under the condition of weak external light intensity, and the use experience is poor. In response to this, in the present embodiment, the display panel 1 further has a transmissive display mode for making the second display surface 1b transmissive for display, so as to improve the user experience in the case that the external light intensity is weak.
As for the specific structure of the display panel 1, please refer to fig. 3 to 6, in the present embodiment, the display panel 1 includes an electrochromic layer 11, a backlight module 12, a liquid crystal substrate layer 13 and a reflective layer 14 sequentially disposed along the direction from the first display surface 1a to the second display surface 1 b; wherein the electrochromic layer 11 is configured to be switchable between a light absorbing state and a transparent state and the reflective layer 14 is configured to be switchable between a transmissive state and a reflective state.
With respect to the electrochromic layer 11, the electrochromic layer 11 is capable of switching between a transparent state and a light-absorbing state, in particular between a transparent state and a light-absorbing state under the influence of an electric field. Meanwhile, the electrochromic layer 11 may be composed of two transparent conductive layers, and an electrochromic layer wrapped between the two transparent conductive layers, and a formation material of the electrochromic layer may include an electrochromic material and/or an electrochromic material; the electrochromic material can be selected from tungsten trioxide, vanadium pentoxide, nickel oxide and the like, and the electrochromic material can be polyaniline, polypyrrole, polythiophene and the like, and the operators can correspondingly select according to own requirements, so that the application is not particularly limited.
With respect to the reflective layer 14, the reflective layer 14 is capable of switching between a transmissive state and a reflective state, and in particular between an emissive state and a reflective state under the influence of an electric field. The reflective layer 14 may be a polymer network liquid crystal film, an electrophoretic display film, or other film. In this embodiment, the reflective layer 14 is specifically a polymer network liquid crystal film, and is normally in a transparent state, and the liquid crystal is electrically controlled to deflect so that the refractive index difference is generated between the liquid crystal and the polymer interface, and thus the reflective state is changed to a scattering state.
In this embodiment, the side of the electrochromic layer 11 facing away from the backlight module 12 forms the first display surface 1a, but this does not limit the first display surface 1a, and the practitioner may additionally provide other components on the side of the electrochromic layer 11 facing away from the backlight module 12 to form the first display surface 1a, and the second display surface 1 b.
Referring to fig. 3, at this time, the display panel 1 is in a reflective display mode, in this embodiment, when the display panel 1 is in the reflective display mode, the electrochromic layer 11 is in a transparent state, and the reflective layer 14 is in a reflective state, so that external light is reflected to the outside by the reflective layer 14 after passing through the electrochromic layer 11 and the liquid crystal substrate layer 13. That is, since the electrochromic layer 11 is in a transparent state, the external light in the environment can pass through the electrochromic layer 11 and the liquid crystal substrate layer 13 and is finally reflected by the reflective layer 14, and the reflected external light again passes through the liquid crystal substrate layer 13, the backlight module 12 and the electrochromic layer 11 and is emitted at the first display surface 1a, so that the first display surface 1a realizes reflective display.
It will be appreciated that the above description is mainly used to describe how the first display surface 1a realizes reflective display, and it is also necessary for the liquid crystal substrate layer 13 to cooperate with a polarizing layer to realize switching between the bright state and the dark state of each pixel unit. Therefore, in the present embodiment, the first polarizing layer 151 is further included, and the first polarizing layer 151 is disposed between the liquid crystal substrate layer 13 and the electrochromic layer 11, wherein the liquid crystal substrate layer 13 is configured to control external light reflected by the reflective layer 14 to pass through the first polarizing layer 151 or to be blocked by the first polarizing layer 151.
In detail, referring to fig. 3, at this time, the display panel is in a reflective display mode in which the first display surface 1a is reflective-displayed, and the liquid crystal layer 132 is not applied with a current. At this time, the liquid crystal layer 132 is vertically aligned, external light in the environment passes through the first polarizing layer 151 and is converted into linear polarized light, and the linear polarized light is reflected back to the first polarizing layer 151 through the reflecting layer 14, and the polarization direction is unchanged, at this time, the light can be emitted from the first polarizing layer 151, thereby realizing a bright state.
Referring to fig. 4, when a current is applied to the liquid crystal layer 132 in the liquid crystal substrate layer 13, the liquid crystal layer 132 deflects, at this time, the liquid crystal layer 132 corresponds to a quarter of a film, the external light passing through the first polarizing layer 151 is converted into circular polarized light after passing through the liquid crystal layer 132, the circular polarized light is rotated and inverted after passing through the reflecting layer 14, and the circular polarized light with inverted rotation direction is converted into polarized light deflected by 90 degrees after passing through the liquid crystal layer 132 again, so as to realize a dark state. In addition, the actual liquid crystal mode may be twisted alignment (TN) or horizontal alignment (IPS), and the implementation personnel may select the liquid crystal mode according to their own needs.
Referring to fig. 5, in the transmissive display mode, the display panel 1 is in the transmissive display mode, and in this embodiment, when the display panel 1 is in the transmissive display mode, the electrochromic layer 11 is in a light absorption state, so that the backlight emitted by the backlight module 12 passes through the liquid crystal substrate layer 13 and the reflective layer 14 and then is emitted, so that the second display surface 1b realizes transmissive display.
Regarding the above-mentioned backlight module 12, which is mainly used for providing backlight, in this embodiment, the backlight module 12 includes a transparent light guide plate and an LED chip, the light guide plate is disposed between the electrochromic layer 11 and the first polarizing layer 151, and the operator can select other transparent backlight modules 12, which is not particularly limited in this application.
As described above, the above description is mainly used to explain how the second display surface 1b realizes transmissive display, and it is also necessary for the liquid crystal substrate layer 13 to cooperate with the polarizing layer to realize switching between the bright state and the dark state of each pixel unit. Therefore, in the present embodiment, the first polarizing layer 151 is disposed between the backlight module 12 and the liquid crystal substrate layer 13, and the second polarizing layer 152 is disposed on the side of the liquid crystal substrate layer 13 facing away from the backlight module 12, wherein the liquid crystal substrate layer 13 is configured to control the backlight passing through the first polarizing layer 151 to pass through the second polarizing layer 152 or be blocked by the second polarizing layer 152.
In detail, referring to fig. 5, when backlight enters the liquid crystal substrate layer 13 through the transparent light guide plate, the backlight enters the first polarizing layer 151, the first polarizing layer 151 and the second polarizing layer 152 are in an orthogonal state, the backlight is converted into linear polarization after passing through the first polarizing layer 151, when the liquid crystal layer 132 in the liquid crystal substrate layer 13 is applied with current, the liquid crystal layer 132 deflects, at this time, the liquid crystal layer 132 corresponds to a half of a film, the backlight passing through the first polarizing layer 151 passes through the liquid crystal layer 132, and becomes polarized light with a deflection direction rotated by 90 degrees, and can pass through the second polarizing layer 152, thereby realizing a bright state.
Referring to fig. 6, when no current is applied to the liquid crystal layer 132 in the liquid crystal substrate layer 13, the liquid crystal layer 132 is vertically aligned, and at this time, the first polarizing layer 151 and the second polarizing layer 152 are in an orthogonal state, the backlight is converted into linear polarization after passing through the first polarizing layer 151, and the linear polarization passes through the liquid crystal layer 132 and reaches the second polarizing layer 152, but cannot pass through, so as to realize a dark state. In accordance with the foregoing description, the actual liquid crystal mode may be twisted alignment (TN) or horizontal alignment (IPS), and the implementation personnel may select the liquid crystal mode according to their own needs.
In addition, as shown in the present embodiment, the second polarizing layer 152 may be disposed on the side of the reflecting layer 14 facing away from the Yu Yejing substrate layer 13. The implementation personnel can be specifically selected according to the requirements.
As for the liquid crystal substrate layer 13, it mainly includes a substrate and a liquid crystal layer 132. In the present embodiment, the liquid crystal substrate layer 13 includes a first substrate 131, a liquid crystal layer 132, and a second substrate 133 stacked in the direction of the first display surface 1a to the second display surface 1b, and electrode layers connected to the liquid crystal layer 132 are provided on the first substrate 131 and the second substrate 133. The first substrate 131 and the second substrate 133 are flexible glass substrates, and the electrode layers include a TFT array layer, and electrode layers on the first substrate 131 and the second substrate 133 are used for providing signals for the liquid crystal layer 132 to realize color display, and parts for preventing light leakage, providing a box thickness and other functions are further arranged on the electrode layers. In another embodiment, one of the first substrate 131 and the second substrate 133 is an array substrate with a TFT array layer, and the other is a color film substrate.
While the display device provided in this embodiment has been mainly described above, it will be appreciated that the display device provided in this embodiment may be any display device with a display panel 1, such as a tablet, a mobile phone, a computer screen, etc., and an implementation person may select the display device according to his own needs, which is not particularly limited in this application.
Meanwhile, the present application uses specific words to describe embodiments of the present application. Reference to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic is associated with at least one embodiment of the present application. Thus, it should be emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various positions in this specification are not necessarily referring to the same embodiment. Furthermore, certain features, structures, or characteristics of one or more embodiments of the present application may be combined as suitable.
Likewise, it should be noted that in order to simplify the presentation disclosed herein and thereby aid in understanding one or more inventive embodiments, various features are sometimes grouped together in a single embodiment, figure, or description thereof. This method of disclosure, however, is not intended to imply that more features than are presented in the claims are required for the subject application. Indeed, less than all of the features of a single embodiment disclosed above.
In some embodiments, numbers describing the components, number of attributes are used, it being understood that such numbers being used in the description of embodiments are modified in some examples by the modifier "about," approximately, "or" substantially. Unless otherwise indicated, "about," "approximately," or "substantially" indicate that the number allows for ±% variation. Accordingly, in some embodiments, numerical parameters set forth in the specification and claims are approximations that may vary depending upon the desired properties sought to be obtained by the individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and employ a method for preserving the general number of digits. Although the numerical ranges and parameters set forth herein are approximations that may be employed in some embodiments to confirm the breadth of the range, in particular embodiments, the setting of such numerical values is as precise as possible.
For each patent, patent application publication, and other material, such as articles, books, specifications, publications, documents, etc., cited in this application, the entire contents of which are hereby incorporated by reference into this application, except for the application history documents which are inconsistent or conflict with the contents of this application, and for documents which have limited the broadest scope of the claims of this application (currently or hereafter attached to this application). It is noted that the descriptions, definitions, and/or terms used in the subject matter of this application are subject to the use of descriptions, definitions, and/or terms in case of inconsistent or conflicting disclosure.
Claims (7)
1. A display panel comprising a first display surface and a second display surface disposed opposite each other, the display panel having at least a reflective display mode in which the first display surface is reflective for display, the display panel having an unfolded state and a folded state, wherein when the display panel is in the folded state, the first display surface is folded outwardly and the second display surface is folded inwardly; the display panel also has a transmissive display mode for transmissive display of the second display surface; the display panel comprises an electrochromic layer, a backlight module, a liquid crystal substrate layer and a reflecting layer which are sequentially arranged along the direction from the first display surface to the second display surface; wherein the electrochromic layer is configured to be switchable between a light absorbing state and a transparent state, and the reflective layer is configured to be switchable between a transmissive state and a reflective state; the electrochromic layer comprises a first transparent conductive layer, a second transparent conductive layer and an electrochromic layer positioned between the first transparent conductive layer and the second transparent conductive layer;
when the display panel is in the reflective display mode, the electrochromic layer is in the transparent state, and the reflective layer is in the reflective state, so that external light rays pass through the electrochromic layer and the liquid crystal substrate layer and are reflected to the outside by the reflective layer;
when the display panel is in the transmission display mode, the electrochromic layer is in the light absorption state, so that the backlight emitted by the backlight module passes through the liquid crystal substrate layer and the reflecting layer and then is emitted.
2. The display panel of claim 1, wherein the first display surface and the second display surface are parallel to each other when the display panel is in the expanded state.
3. The display panel of claim 1, further comprising a first polarizing layer disposed between the liquid crystal substrate layer and the electrochromic layer, wherein the liquid crystal substrate layer is configured to control the ambient light reflected by the reflective layer to pass through or be blocked by the first polarizing layer.
4. The display panel of claim 1, further comprising a first polarizing layer disposed between the backlight module and the liquid crystal substrate layer, and a second polarizing layer disposed on a side of the liquid crystal substrate layer facing away from the backlight module, wherein the liquid crystal substrate layer is configured to control backlight passing through the first polarizing layer to pass through or be blocked by the second polarizing layer.
5. The display panel of claim 4, wherein the second polarizing layer is disposed between the liquid crystal substrate layer and the reflective layer.
6. The display panel of claim 1, wherein the liquid crystal substrate layer includes a first substrate, a liquid crystal layer, and a second substrate stacked in a direction from the first display surface to the second display surface.
7. A display device comprising the display panel according to any one of claims 1 to 6.
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