CN114005368A - Display panel and display device - Google Patents
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- CN114005368A CN114005368A CN202111313260.0A CN202111313260A CN114005368A CN 114005368 A CN114005368 A CN 114005368A CN 202111313260 A CN202111313260 A CN 202111313260A CN 114005368 A CN114005368 A CN 114005368A
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- 230000005684 electric field Effects 0.000 description 2
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- 238000000034 method Methods 0.000 description 2
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 description 2
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- 238000005299 abrasion Methods 0.000 description 1
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- 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
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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
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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
- G02F1/135—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
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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
- G02F1/135—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, and relates 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, liquid crystal display technology has become the most widely used display technology at present. Meanwhile, with the improvement of the demand of people for display technologies, the foldable display panel gradually enters the visual field of people.
The current foldable display panel can be generally divided into two types, specifically, an inward folding type and an outward folding type, 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, the reliability risk of abrasion and falling damage of the display surface is relatively low, and the acceptance degree and the popularity are higher at present. However, it is obvious that, with the above-described configuration, once the display panel is in the folded state, the user cannot smoothly view the display surface. At present, a small display screen is additionally arranged on the display panel, and when 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 show pictures to a user in a folded state. However, the small display screen mainly adopts a transmissive display mode, which may increase 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 present invention provides a display panel, which achieves dual-sided display and has lower power consumption.
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, the display panel includes a first display surface and a second display surface that set up back to back each other, the display panel has at least a reflection display mode that makes the first display surface reflection show, the display panel has an expansion state and a folding state, wherein, when the display panel is in when the folding state, the first display surface is outwards folded, and the second display surface is inwards folded.
Optionally, in some embodiments of the present application, the display panel further has a transmissive display mode for enabling the second display surface to display in a transmissive manner.
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, which are sequentially disposed in a direction from the first display surface to the second display surface;
wherein the electrochromic layer is configured to be switchable between an 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, the liquid crystal display further includes 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.
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 absorption state, so that the backlight emitted by the backlight module passes through the liquid crystal substrate layer and the reflective layer and is emitted.
Optionally, in some embodiments of the present application, the backlight module further includes a first polarizing layer and a second polarizing layer, 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, where the liquid crystal substrate layer is configured to control backlight passing through the first polarizing layer to pass through the second polarizing layer or to 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, which are 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 the display panel according to 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 oppositely, the display panel is provided with a reflection display mode which enables the first display surface to display in a reflection mode, when the whole display panel is in the folded state, the first display surface is folded outwards, and the picture is displayed for a user in a reflection display mode, so that the power consumption is lower, the display effect is good in a highlight environment, and the use habit of the user is better met.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required in the embodiments are briefly described below. The drawings in the following description are only some embodiments of the present application, and it will be obvious to those skilled in the art that other drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a display panel in embodiment 1 of the present invention, in which the display panel is in a folded state;
fig. 2 is a schematic structural diagram of a display panel in embodiment 1 of the invention, in which the display panel is in an unfolded state;
fig. 3 is a schematic cross-sectional view of a display panel in embodiment 1, in which the display panel is in a reflective display mode for making the first display surface perform reflective display, and no current is applied to the liquid crystal layer;
fig. 4 is a schematic cross-sectional view of a display panel in embodiment 1, in which the display panel is in a reflective display mode for making the first display surface perform reflective display and a current is applied to the liquid crystal layer;
fig. 5 is a schematic cross-sectional view of a display panel in embodiment 1, in which the display panel is in a transmissive display mode for making the second display surface perform transmissive display, 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, in which the display panel is in a transmissive display mode for making the second display surface perform transmissive display, and no current is applied to the liquid crystal layer.
Description of reference numerals:
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-reflective layer, 151-first polarizing layer, 152-second polarizing layer.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments, not all embodiments, of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to 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 and positional relationships based on those shown in the drawings, and are used only for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a unique orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or including indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present application, the word "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 the purpose 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 are not shown in detail to avoid obscuring 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 fig. 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 at least has a reflective display mode for making the first display surface 1a perform reflective display, and the display panel 1 has an unfolded state and a folded state, wherein when the display panel 1 is in the folded state, the first display surface 1a is folded outwards, and the second display surface 1b is folded inwards.
In the present embodiment, the display panel 1 is provided with the first display surface 1a and the second display surface 1b, thereby constituting the display panel 1 for double-sided display, and the display panel 1 is configured to be foldable and to be 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 face 1a is folded outward and constitutes a main viewing face of a user, and at this time, when the display panel 1 is opened and adopts the reflective display mode, the first display face 1a performs display. Compared with the conventional method, in which the display screen with independent backlight is used as the main viewing surface of the user when the whole display panel 1 is folded, the embodiment displays the picture in the reflective display mode with lower power consumption, so that the display panel 1 has lower power consumption and more excellent performance.
Referring to fig. 1 again, the first display surface 1a is folded outward, 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 located above the inner contour of the display panel 1 in the folded state.
In addition, the implementer may select the specific technical means for implementing the folding of the display panel 1 according to his own needs, which is not particularly limited in the present application. For example, in another embodiment, a hinge is disposed in the middle of the display panel 1, so that the portions of the display panel 1 on both sides of the hinge rotate around the rotation center of the hinge, thereby switching the whole display panel 1 between the folded state and the unfolded state. In the present embodiment, the entire display panel 1 is a flexible display panel.
As for the unfolded state, the practitioner 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, when the display panel 1 is in the unfolded state, the entire display panel 1 takes an obtuse-angle shape. Referring to fig. 2 again, 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.
Note that the first display surface 1a may be capable of only reflective display, or may be capable of switching between reflective display and transmissive display or transflective display, and the present invention is not limited thereto.
The second display surface 1b may also 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 displayed in reflection. 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, under the condition that the intensity of the external light is weak, a user cannot observe clear pictures on the first display surface 1a and the second display surface 1b, and the use experience is poor. Correspondingly, in the present embodiment, the display panel 1 further has a transmissive display mode for making the second display surface 1b perform transmissive display, so as to improve the user experience under the condition that the external light intensity is weak.
With reference 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 a direction from a first display surface 1a to a second display surface 1 b; wherein the electrochromic layer 11 is configured to be switchable between an absorbing state and a transparent state, and the reflective layer 14 is configured to be switchable between a transmitting state and a reflective state.
As regards the electrochromic layer 11, the electrochromic layer 11 is capable of switching between a transparent state and an absorbing state, in particular under the action 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 the forming material of the electrochromic layer may include an inorganic electrochromic material and/or an organic electrochromic material; the inorganic electrochromic material can be tungsten trioxide, vanadium pentoxide, nickel oxide and the like, the organic electrochromic material can be polyaniline, polypyrrole, polythiophene and the like, and implementers can correspondingly select the inorganic electrochromic material according to self requirements, and the inorganic electrochromic material is not particularly limited in the application.
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 a reflective state and a reflective state under the influence of an electric field. The reflective layer 14 may be a polymer network liquid crystal film layer, an electrophoretic display film layer, or other film layer. In this embodiment, the reflective layer 14 is specifically a polymer network liquid crystal film layer, which is in a transparent state in a normal state, and the liquid crystal is electrically controlled to deflect so that a refractive index difference is generated between the liquid crystal and the polymer interface, thereby changing to a scattering state, i.e., a reflective state.
It should be additionally noted that, in the present embodiment, the side of the electrochromic layer 11 facing away from the backlight module 12 constitutes the first display surface 1a, but this does not limit the first display surface 1a, and the implementer may additionally provide other components on the side of the electrochromic layer 11 facing away from the backlight module 12 to constitute the first display surface 1a, and also the second display surface 1 b.
Referring to fig. 3, at this time, the display panel 1 is in the reflective display mode, in the embodiment, when the display panel 1 is in the reflective display mode, the electrochromic layer 11 is in the transparent state, and the reflective layer 14 is in the reflective state, so that the external light passes through the electrochromic layer 11 and the liquid crystal substrate layer 13 and is reflected to the outside by the reflective layer 14. That is to say, since the electrochromic layer 11 is in the transparent state, the ambient 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 after reflection, the ambient light passes through the liquid crystal substrate layer 13, the backlight module 12 and the electrochromic layer 11 again and is emitted from the first display surface 1a, so that the first display surface 1a realizes reflective display.
It can be understood that the above description is mainly used to illustrate 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, a 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 ambient 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, the display panel is in a reflective display mode in which the first display surface 1a is in a reflective display mode, and no current is applied to the liquid crystal layer 132. At this time, the liquid crystal layer 132 is vertically aligned, external light in the environment passes through the first polarizing layer 151 and then is converted into linearly polarized light, and the linearly polarized light passes through the reflective layer 14 and then is reflected back to the first polarizing layer 151, and the polarization direction is not changed, at this time, the light can be emitted from the first polarizing layer 151, so as to realize 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, the liquid crystal layer 132 at this time is equivalent to a quarter-film, the external light passing through the first polarizing layer 151 is converted into circularly polarized light after passing through the liquid crystal layer 132, the circularly polarized light passes through the reflective layer 14 and then is rotated and inverted, the circularly polarized light with the inverted rotation direction is converted into polarized light deflected by 90 degrees after passing through the liquid crystal layer 132 again, and cannot pass through the first polarizing layer 151, so that a dark state is realized. In addition, the actual liquid crystal mode may be twisted alignment (TN) or horizontal alignment (IPS), and the implementer may select the liquid crystal mode according to his own needs.
Referring to fig. 5, at this time, the display panel 1 is in the transmissive display mode, and in the 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 is emitted, thereby enabling the second display surface 1b to implement transmissive display.
In the present embodiment, the backlight module 12 includes a transparent light guide plate and LED chips, the light guide plate is disposed between the electrochromic layer 11 and the first polarizing layer 151, and the implementer may select another transparent backlight module 12, which is not 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 the switching between the bright state and the dark state of each pixel unit. Therefore, in the present embodiment, a second polarizing layer 152 is further included, the first polarizing layer 151 described above is disposed between the backlight module 12 and the liquid crystal substrate layer 13, and the second polarizing layer 152 is disposed on a side of the liquid crystal substrate layer 13 opposite to 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 to be blocked by the second polarizing layer 152.
In detail, referring to fig. 5, after the backlight passes through the transparent light guide plate and enters the liquid crystal substrate layer 13, the backlight enters the first polarization layer 151, the first polarization layer 151 and the second polarization layer 152 are orthogonal, the backlight passes through the first polarization layer 151 and is converted into linearly polarized light, 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 is equivalent to a half of a diaphragm, and after the backlight passes through the liquid crystal layer 132, the backlight passing through the first polarization layer 151 becomes polarized light with a deflection direction rotated by 90 degrees, and the polarized light passes through the second polarization 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, at this time, the first polarizing layer 151 and the second polarizing layer 152 are in an orthogonal state, the backlight is converted into linearly polarized light after passing through the first polarizing layer 151, and the linearly polarized light reaches the second polarizing layer 152 after passing through the liquid crystal layer 132, but cannot pass through, so as to realize a dark state. Consistent with the foregoing description, the actual liquid crystal mode may also be twisted alignment (TN) or horizontal alignment (IPS), which may be selected by the implementer according to his own needs.
In addition, the second polarizing layer 152 may be disposed on a side of the reflective layer 14 opposite to the liquid crystal substrate layer 13, as illustrated in the present embodiment. The implementer can specifically select and use according to the requirements.
As for the liquid crystal substrate layer 13, it mainly includes a substrate and a liquid crystal layer 132. In this embodiment, the liquid crystal substrate layer 13 includes a first substrate 131, a liquid crystal layer 132, and a second substrate 133 stacked in a direction from the first display surface 1a to the second display surface 1b, and an electrode layer connected to the liquid crystal layer 132 is disposed on the first substrate 131 and the second substrate 133. The first substrate 131 and the second substrate 133 are both flexible glass substrates, the electrode layers include a TFT array layer, and the electrode layers on the first substrate 131 and the second substrate 133 are used for providing signals to the liquid crystal layer 132 to realize color display, and components for preventing light leakage and providing box thickness are further disposed thereon. 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 filter substrate.
The foregoing has mainly described some basic descriptions of the display device provided in the present embodiment, and it is understood that the display device provided in the present embodiment may be any display device with a display panel 1, such as a tablet, a mobile phone, a computer screen, etc., and the implementer may select the display device according to his own needs, which is not limited in the present application.
Also, this application uses specific language to describe embodiments of the application. Reference throughout this specification to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with at least one embodiment of the present application is included in at least one embodiment of the present application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, some features, structures, or characteristics of one or more embodiments of the present application may be combined as appropriate.
Similarly, it should be noted that in the preceding description of embodiments of the application, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of one or more of the embodiments. This method of disclosure, however, is not intended to require more features than are expressly recited in the claims. Indeed, the embodiments may be characterized as having less than all of the features of a single embodiment disclosed above.
Numerals describing the number of components, attributes, etc. are used in some embodiments, it being understood that such numerals used in the description of the embodiments are modified in some instances by the use of the modifier "about", "approximately" or "substantially". Unless otherwise indicated, "about", "approximately" or "substantially" indicates that the number allows for a variation of + -%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximations that may vary depending upon the desired properties of the individual embodiments. In some embodiments, the numerical parameter should take into account the specified significant digits and employ a general digit preserving approach. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the range are approximations, in the specific examples, such numerical values are set forth as precisely as possible within the scope of the application.
For each patent, patent application publication, and other material cited in this application, such as articles, books, specifications, publications, documents, and the like, the entire contents of which are hereby incorporated by reference into this application, except for application history documents that are inconsistent with or conflict with the contents of this application, and except for documents that are currently or later become incorporated into this application as though fully set forth in the claims below. It is noted that the descriptions, definitions and/or use of terms in this application shall control if they are inconsistent or contrary to the present disclosure.
Claims (11)
1. A display panel comprising a first display surface and a second display surface disposed opposite to each other, the display panel having at least a reflective display mode in which the first display surface is displayed in reflection, 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 outward and the second display surface is folded inward.
2. The display panel according to claim 1, wherein the display panel further has a transmissive display mode in which the second display surface is transmissive-displayed.
3. The display panel according to claim 1 or 2, wherein the first display surface and the second display surface are parallel to each other when the display panel is in the unfolded state.
4. The display panel according to claim 2, wherein the display panel comprises an electrochromic layer, a backlight module, a liquid crystal substrate layer, and a reflective layer sequentially arranged in a direction from the first display surface to the second display surface;
wherein the electrochromic layer is configured to be switchable between an absorbing state and a transparent state, and the reflective layer is configured to be switchable between a transmissive state and a reflective state.
5. The display panel of claim 4, wherein 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, such that ambient light passing through the electrochromic layer and the liquid crystal substrate layer is reflected by the reflective layer to the ambient.
6. The display panel of claim 5, 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.
7. The display panel of claim 4, wherein when the display panel is in the transmissive display mode, the electrochromic layer is in the light absorbing state, such that the backlight emitted by the backlight module exits through the liquid crystal substrate layer and the reflective layer.
8. The display panel of claim 7, 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 opposite to 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.
9. The display panel of claim 8, wherein the second polarizing layer is disposed between the liquid crystal substrate layer and the reflective layer.
10. The display panel according to claim 4, wherein the liquid crystal substrate layer includes a first substrate, a liquid crystal layer, and a second substrate which are stacked in a direction from the first display surface to the second display surface.
11. A display device characterized by comprising the display panel according to any one of claims 1 to 10.
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