CN112289184B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN112289184B CN112289184B CN202011153342.9A CN202011153342A CN112289184B CN 112289184 B CN112289184 B CN 112289184B CN 202011153342 A CN202011153342 A CN 202011153342A CN 112289184 B CN112289184 B CN 112289184B
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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
- G02F1/15—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
- G02F1/153—Constructional details
- G02F1/157—Structural association of cells with optical devices, e.g. reflectors or illuminating devices
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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
- G09F9/302—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 characterised by the form or geometrical disposition of the individual elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
Abstract
The application provides a display panel and a display device, wherein the display panel comprises a first display area and a second display area, and in the first display area, the display panel comprises an electrochromic film, a substrate, a thin film transistor, a pixel electrode, a light-emitting functional layer and a common electrode which are arranged in a laminated mode; the electrochromic film comprises a transparent state and a mirror reflection state, the transparent state of the electrochromic film is used for transmitting light generated by the light-emitting functional layer, and the mirror reflection state of the electrochromic film is used for reflecting light generated by the light-emitting layer. This application realizes display panel's two-sided color development through two kinds of forms of electrochromic film, has effectively reduced display panel's preparation process, and display device still provides a set of camera simultaneously and realizes display device's leading function of making a video recording and rearmounted function of making a video recording, the cost is reduced.
Description
Technical Field
The application relates to the field of display, in particular to a display panel and a display device.
Background
At present, a foldable mobile phone mainly adopts a display panel with a single light-emitting mode to realize a double-sided display function, and a front camera and a rear camera are respectively arranged to realize a double-sided photographing function. As shown in fig. 2a and 2B, the foldable phone includes a first display panel a1 and a second display panel a2, a rear camera B1 and a front camera B2, and when the foldable phone is in a folded state, the first display panel a1 and the rear camera B1 are adopted; when the folding mobile phone is in an unfolded state, the second display panel A2 and the front camera B2 are adopted. Such a design causes the preparation process of the foldable mobile phone to be too complicated and the cost to be too high.
Therefore, the conventional display device has the problems of complicated process and high cost.
Disclosure of Invention
The embodiment of the application provides a display panel and a display device, and can effectively solve the problems of complex process and high cost of the existing display device.
In order to solve the above problems, the technical scheme provided by the application is as follows:
the application provides a display panel, including first display area and with the second display area that first display area links to each other, display panel includes:
a substrate;
a thin film transistor disposed at one side of the substrate;
the pixel electrode is arranged on one side of the thin film transistor, which is far away from the substrate;
the light-emitting functional layer is arranged on one side of the pixel electrode, which is far away from the thin film transistor;
the public electrode is arranged on one side of the light-emitting function layer far away from the pixel electrode;
in the first display area, the pixel electrode and the common electrode are transparent electrodes, the display panel further comprises an electrochromic film, the electrochromic film is arranged on one side of the substrate, the electrochromic film comprises a transparent form and a mirror reflection form, the transparent form of the electrochromic film is used for transmitting light generated by the luminous functional layer, and the mirror reflection form of the electrochromic film is used for reflecting light generated by the luminous layer.
In some embodiments, the electrochromic film is disposed on a side of the substrate away from the thin film transistor.
In some embodiments, the electrochromic film is disposed on a side of the substrate proximate to the thin film transistor.
In some embodiments, the electrochromic film includes an anode conductive layer, an ion storage layer, an ion conductive layer, an electrochromic material layer, and a cathode conductive layer, which are stacked, and the material of the electrochromic material layer includes one of tungsten oxide and tetrathiafulvalene.
The present application further provides a foldable display device, comprising:
in the display panel, the display panel includes a first display area and a second display area connected to the first display area;
the protective cover plate is attached to the first display area and the second display area;
a housing covering a non-display area portion of the display panel;
the control chip is used for driving the display panel to work and controlling the state of the electrochromic film, and the electrochromic film comprises a transparent state and a mirror reflection state;
the camera is arranged in the first display area and comprises a front state and a rear state.
In some embodiments, the display device further comprises an infrared recognition device for recognizing the position of the human face relative to the display device and transmitting the position information of the human face to the driving chip.
In some embodiments, the driving chip determines to drive the first display area and the second display area according to the face position information.
In some embodiments, the driving chip determines to adopt a front-end state and a rear-end state of the camera according to the face position information.
In some implementations, the display device is a foldable device, the display device employs the first display region in a folded state, and the display device employs the first display region and the second display region in an unfolded state.
In some embodiments, the control chip is configured to determine to adopt the first display area and the second display area according to a folding angle of the display device, when the folding angle is greater than a preset angle, the control chip controls the electrochromic film to be in a transparent state, and simultaneously lights the first display area pixels, and when the folding angle is not greater than the preset angle, the control chip controls the electrochromic film to be in a mirror reflection state, and simultaneously lights the first display area pixels and the second display area pixels.
The application provides a display panel and a display device, wherein the display panel comprises a first display area and a second display area, and in the first display area, the display panel comprises an electrochromic film, a substrate, a thin film transistor, a pixel electrode, a light-emitting functional layer and a common electrode which are arranged in a laminated mode; the electrochromic film comprises a transparent state and a mirror reflection state, the transparent state of the electrochromic film is used for transmitting light generated by the light-emitting functional layer, and the mirror reflection state of the electrochromic film is used for reflecting light generated by the light-emitting layer. This application realizes display panel's two-sided color development through two kinds of forms of electrochromic film, has effectively reduced display panel's preparation process, and display device still provides a set of camera simultaneously and realizes display device's leading function of making a video recording and rearmounted function of making a video recording, the cost is reduced.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a display device in the prior art.
Fig. 2a is an expanded view of a display device in the prior art.
Fig. 2b is a schematic view of a display device in the prior art.
Fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present application.
Fig. 4 is a schematic plan-view expanded view of a first display device according to an embodiment of the present disclosure.
Fig. 5 is a schematic plan-view expanded view of a second display device according to an embodiment of the present application.
Fig. 6 is a schematic folded state diagram of a second display device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. 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 application.
In the description of the present application, 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," "clockwise," "counterclockwise," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular orientation, and thus are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; may be mechanically, electrically or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Further, the present application may repeat reference numerals and/or reference letters in the various examples for simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or arrangements discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize the application of other processes and/or the use of other materials. A (c)
As shown in fig. 1, in the prior art, a foldable mobile phone employs a display panel of an opaque substrate, where the display panel includes a substrate 110, a buffer layer 120, a thin film transistor layer 130, a pixel electrode 150, a light-emitting functional layer 170, and a common electrode 180, which are stacked, the substrate is an opaque substrate, and the display panel employs a top emission mode. In the prior art, because the display panel has a single light emitting mode, the foldable mobile phone is formed by splicing a first display panel a1 and a second display panel a2, and a front camera B2 and a rear camera B1 are used to realize double-sided photography, as shown in fig. 2B, the foldable mobile phone adopts the display panel a1 and the rear camera B1 in a folded state; as shown in fig. 2a, in the unfolded state, the foldable cellular phone employs a display panel a2 and a front camera a 1. Due to the adoption of the design that the double-display panel is spliced and the front camera and the rear camera are separated, the problems of complicated preparation process and overhigh cost of the existing foldable mobile phone are caused.
Specifically, with reference to fig. 3 to 6, the present application provides a display panel and a display device. The display panel includes a first display region and a second display region connected to the first display region, and in the first display region, as shown in fig. 3, the device of the display panel includes: electrochromic film 100, including both transparent and specular reflective forms; a substrate 110 disposed at one side of the electrochromic film; a buffer layer 120 disposed on a side of the substrate 110 away from the electrochromic film 100; a thin film transistor 130 disposed on a side of the buffer layer 120 away from the substrate 110; a pixel electrode 150 disposed on a side of the thin film transistor 130 away from the buffer layer 120; a light emitting function layer 170 disposed on a side of the pixel electrode 140 away from the thin film transistor 130; a common electrode 180 disposed on a side of the light emitting function layer 150 away from the pixel electrode 140; in the first display region, the substrate 100 is a transparent substrate, the pixel electrode 140 and the common electrode 180 are transparent electrodes, and the electrochromic film 100 includes a transparent state and a mirror reflection state, where when the first display region is adopted, the electrochromic film 100 is in the transparent state and is configured to transmit light generated by the light-emitting functional layer 170, and when the second display region is adopted, the electrochromic film 100 is in the mirror reflection state and is configured to reflect light generated by the light-emitting layer 170.
In some embodiments, the material components of the electrochromic film 100 include tungsten oxide, polythiophene, and tetrathiafulvalene, and the electrochromic film 100 has the advantages of large transmittance adjustment range, good cycling stability, low price of raw materials, low working voltage, low energy consumption, environmental friendliness, large vision, memory function, wide working range, and easy large-area manufacturing, and has a wide application prospect in the fields of display devices, light control glass, information storage, and the like.
In some embodiments, the electrochromic film 100 includes a transparent pixel electrode layer, an ion storage layer, an ion conductive layer, an electrochromic material layer, and a common electrode conductive layer, which are stacked. The transparent pixel electrode layer and the transparent common electrode conducting layer are generally made of transparent conducting materials, the transparent conducting materials can be oxides such as indium tin oxide, zinc oxide and aluminum oxide, and can also be polymers such as polypyridine, polythiophene, polyaniline and polyphenylacetylene, and in the application, the transparent pixel electrode layer and the transparent common electrode layer can be polythiophene; the ion conducting layer material contains hydrogen ions and lithium ions and is used for carrying out ion reduction on the electrochromic material; the electrochromic material generally has good electrochemical oxidation reducibility, such as tungsten oxide, titanium oxide, lead oxide, and changes the valence of the electrochromic material due to the injection or extraction of hydrogen ions and lithium ions, so as to change the color.
The substrate 110 is generally made of a flexible transparent material, and the material of the substrate 110 includes one of transparent polyimide, polyacrylate, polymethacrylic acid, methyl acrylate, and polycarbonate; a buffer layer 120 is disposed on a side of the substrate 110 away from the electrochromic film 100, and the buffer layer 120 is typically silicon nitride or silicide.
The thin film transistor 130 includes: an active layer 131 disposed on a side of the buffer layer 110 away from the substrate 100; a first gate insulating layer 132 disposed on a side of the active layer 131 away from the buffer layer 110; a first gate layer disposed on a side of the first gate insulating layer 132 away from the active layer 131 and patterned to form a first gate 133; a second gate insulating layer 134 disposed on a side of the first gate electrode 133 away from the first gate insulating layer 132; the second gate layer is arranged on one side, far away from the first gate 133, of the second gate insulating layer 134 and is patterned to form a second gate; an electrolyte layer 136 disposed on one side of the second gate electrode; a through hole is formed in the electrolyte layer 136, and the through hole penetrates through the electrolyte layer 136 to the surface of the active layer 131, and a source drain layer 137 is formed in the through hole.
A third insulating layer 140 disposed on a side of the thin film transistor 130 away from the active layer 131; the pixel electrode 150 is arranged on one side of the flat layer 140 far away from the source drain 136; a planarization layer 160 disposed on a side of the pixel electrode layer 150 away from the third insulating layer; a light-emitting functional layer 170 disposed on a side of the planarization layer 160 away from the pixel electrode layer and connected to the pixel electrode layer 150, wherein the light-emitting functional layer 170 includes a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, and an electron injection layer; the common electrode 180 is disposed on a side of the light emitting function layer 170 away from the pixel electrode layer, and the encapsulation layer 190 is disposed on a side of the common electrode 180 away from the light emitting function layer 170.
In some embodiments, the pixel electrode 150 and the common electrode 180 are made of a transparent electrode material, and the transparent electrode material is one or more of indium tin oxide, magnesium, and aluminum.
In some embodiments, the pixel projection of the light-emitting functional layer 170 is staggered from the projection of the thin film transistor, so that the light generated by the light-emitting layer 170 can be better transmitted when the electroluminescent film 110 is in a transparent state.
In some embodiments, the electrochromic film 110 has a high transmittance when not energized and exhibits a specular reflection effect when energized.
The present application further provides a display device, and fig. 4 is an expanded schematic view of the display device; the first display area adopts a display panel as shown in fig. 3, the display panel comprises a first display area a1 and a second display area a2 connected with the first display area, and in the first display area a1, the display panel comprises: a substrate; a thin film transistor disposed at one side of the substrate; the pixel electrode is arranged on one side of the thin film transistor, which is far away from the substrate; the light-emitting functional layer is arranged on one side of the pixel electrode, which is far away from the thin film transistor; the public electrode is arranged on one side of the light-emitting functional layer far away from the pixel electrode; wherein, in first display area, the substrate is transparent substrate, pixel electrode and common electrode are transparent electrode, display panel includes electrochromic membrane, electrochromic membrane sets up the substrate is kept away from one side of thin-film transistor, electrochromic membrane includes transparent form and specular reflection form, and when adopting first display area, electrochromic membrane is transparent form for see through the light that luminous functional layer produced, when adopting the second display area, electrochromic membrane is specular reflection form for the light that the reflection luminescent layer produced.
The electrochromic film has the advantages of large transmittance adjusting range, good cycling stability, low price of raw materials and the like, also has the advantages of low working voltage, low energy consumption, environmental protection, large vision, memory function, wide working range, easiness in large-area manufacturing and the like, and has wide application prospects in the fields of display devices, dimming glass, information storage and the like.
In some embodiments, the electrochromic film includes a transparent anode layer, an ion storage layer, an ion conducting layer, an electrochromic material layer, and a cathode conducting layer in a stacked arrangement. The transparent anode layer and the transparent cathode conductive layer are generally made of transparent conductive materials, the transparent conductive materials can be oxides such as indium tin oxide, zinc oxide, aluminum oxide and the like, and can also be polymers such as polypyridine, polythiophene, polyaniline, polyphenylacetylene and the like, and in the application, the transparent pixel electrode layer and the transparent common electrode layer can be polythiophene; the ion conducting layer material contains hydrogen ions and lithium ions and is used for carrying out ion reduction on the electrochromic material; the electrochromic material generally has good electrochemical oxidation reducibility, such as tungsten oxide, titanium oxide, lead oxide, and changes the valence of the electrochromic material due to the injection or extraction of hydrogen ions and lithium ions, so as to change the color.
In some embodiments, the display device further includes a control chip, the control chip is configured to control the electro-chromic film and the first and second display regions a1 and a2 to emit light, when the display device uses the first display region a1, the control chip sends a command to the display panel, the electrochromic film uses a transparent state, and the light of the light-emitting functional layer is transmitted through the electrochromic film; when the display device adopts the first display area and the second display area A2 at the same time, the control chip is connected with the electro-film through the data line, the transparent anode electrode layer of the electro-film receives current and then transmits the current to the ion storage layer, the ion storage layer transmits reductive cations to the electrochromic material layer, the valence of the electrochromic material is increased, the electrochromic material presents a mirror surface shape, and the electrochromic film is used for reflecting light generated by the light-emitting function layer.
The display device further comprises a camera B1, and the camera B1 is arranged in the first display area A1 of the display device.
The display device further comprises an infrared recognition device used for recognizing the position of the face relative to the display device, the driving chip judges and drives the first display area and the second display area according to the face WeChat information after receiving the face position information, and the driving chip judges and adopts the front-mounted state and the rear-mounted state of the camera according to the face information after receiving the face position information.
In some embodiments, the number of the cameras B1 is one or two.
In some embodiments, the number of the cameras B1 is three, the distances between the cameras B1 are equal, and the distance between the camera edges is not more than 0.2 cm.
In some embodiments, the second display region a2 of the display device employs a display panel as shown in fig. 1 in the non-projection area of the first display region a1, and a display panel employing an opaque substrate, the display panel including a substrate 110, a buffer layer 120, a thin-film transistor layer 130, a pixel electrode 150, a light-emitting function layer 170, and a common electrode 180, which are stacked, the substrate being an opaque substrate, the display panel employing a top emission mode.
In some embodiments, the control chip is configured to adopt the first display area a1 and the second display area a2 according to a state that a user holds the display device, adopt the first display area a1 when the mobile phone is tilted outward by more than 90 degrees, and adopt the first display area a1 and the second display area a2 when the mobile phone is tilted outward by less than 90 degrees.
In some embodiments, the display device is a foldable display device, fig. 5 is a folded and unfolded view of the real device, and fig. 6 is a folded schematic view of the display device, the display device includes a bending region C2, and a first flat region C1 and a second flat region C3 disposed at two sides of the bending region, the first flat region C1 may be at any angle with respect to the flat region C3 along the bending region C2, the display device includes a first display region a1 and a second display region a2 connected to the first display region a1, the first display region a1 is disposed in the first flat region C1, and the second display region includes the second flat region C3 and the bending region C2.
In some embodiments, the second display area a2 includes a portion of the first flat area C1.
The display panel includes: a substrate; a thin film transistor disposed at one side of the substrate; the pixel electrode is arranged on one side of the thin film transistor, which is far away from the substrate; the light-emitting functional layer is arranged on one side of the pixel electrode, which is far away from the thin film transistor; the public electrode is arranged on one side of the light-emitting function layer far away from the pixel electrode; wherein, in first display area A1, pixel electrode and common electrode are transparent electrode, display panel still includes electrochromic membrane, electrochromic membrane sets up the substrate is kept away from one side of thin film transistor, electrochromic membrane includes transparent form and specular reflection form, when adopting first display area, electrochromic membrane is transparent form for see through the light that luminous functional layer produced, when adopting the second display area, electrochromic membrane is specular reflection form for the light that the reflective light emitting layer produced.
In some embodiments, the material composition of the electrochromic film includes tungsten oxide, polythiophene, tetrathiafulvalene. The light-emitting diode has the advantages of large transmissivity adjusting range, good circulation stability, low price of raw materials and the like, also has the advantages of low working voltage, low energy consumption, environmental protection, large vision, memory function, wide working range, easiness in large-area manufacturing and the like, and has wide application prospects in the fields of display devices, light-adjusting glass, information storage and the like.
In some embodiments, the electrochromic film includes a transparent pixel electrode layer, an ion storage layer, an ion conductive layer, an electrochromic material layer, and a common electrode conductive layer, which are disposed in a stack. The transparent pixel electrode layer and the transparent common electrode conductive layer are generally made of transparent conductive materials, the transparent conductive materials may be oxides such as indium tin oxide, zinc oxide, aluminum oxide, and the like, or polymers such as polypyridine, polythiophene, polyaniline, polyphenylacetylene, and the like, and in the application, the transparent pixel electrode layer and the transparent common electrode layer may be polythiophene; the ion conducting layer material contains hydrogen ions and lithium ions and is used for carrying out ion reduction on the electrochromic material; the electrochromic material generally has good electrochemical oxidation reducibility, such as tungsten oxide, titanium oxide, lead oxide, and changes the valence of the electrochromic material due to the injection or extraction of hydrogen ions and lithium ions, so as to change the color.
In some embodiments, the control chip is configured to determine to adopt the first display area a1 and the second display area a2 according to a folding angle of the display device, when the folding angle is greater than 50 degrees, the control chip controls the electrochromic film to be in a transparent state while illuminating the first display area pixels, and when the folding angle is not greater than 50 degrees, the control chip controls the electrochromic film to be in a mirror reflection state while illuminating the first display area a1 pixels and the second display area a2 pixels.
The application provides a display panel and a display device, wherein the display panel comprises an electrochromic film, a substrate, a thin film transistor, a pixel electrode, a light-emitting functional layer and a common electrode which are arranged in a stacked mode; the electrochromic film comprises a transparent state and a mirror reflection state, the transparent state of the electrochromic film is used for transmitting light generated by the light-emitting functional layer, and the mirror reflection state of the electrochromic film is used for reflecting light generated by the light-emitting layer. This application realizes display panel's two-sided colour development through two kinds of forms of electrochromic film, has effectively reduced display device's thickness, and display device still provides a set of camera and realizes display device's leading function of making a video recording and rearmounted function of making a video recording simultaneously, has effectively reduced display device's lower frame length.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.
The display panel and the display device provided by the embodiments of the present application are described in detail above, and the principle and the implementation of the present application are explained in the present application by applying specific examples, and the description of the embodiments above is only used to help understanding the technical solution and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (8)
1. A display panel including a first display region and a second display region connected to the first display region, the display panel comprising:
a substrate;
a thin film transistor disposed at one side of the substrate;
the pixel electrode is arranged on one side of the thin film transistor, which is far away from the substrate;
the light-emitting functional layer is arranged on one side of the pixel electrode, which is far away from the thin film transistor;
the public electrode is arranged on one side of the light-emitting function layer far away from the pixel electrode;
in the first display area, the pixel electrode and the common electrode are transparent electrodes, the display panel further comprises an electrochromic film, the electrochromic film is arranged on one side, away from the thin film transistor, of the substrate, and in the first display area, the electrochromic film comprises a transparent state and a mirror reflection state, the transparent state of the electrochromic film is used for transmitting light generated by the light-emitting functional layer, and the mirror reflection state of the electrochromic film is used for reflecting light generated by the light-emitting layer;
when only the first display region is adopted, the electrochromic film is in a transparent state, and light of the light-emitting functional layer is transmitted through the electrochromic film;
when the first display area and the second display area are adopted simultaneously, the electrochromic film presents a mirror surface shape and is used for reflecting light generated by the light-emitting function layer;
the display panel comprises a bending area, a first flat area and a second flat area, wherein the first flat area and the second flat area are arranged on two sides of the bending area, the first flat area can form any angle with the second flat area along the bending area, the first display area is arranged in the first flat area, and the second display area comprises the second flat area and the bending area.
2. The display panel according to claim 1, wherein the electrochromic film comprises an anode conductive layer, an ion storage layer, an ion conductive layer, an electrochromic material layer, and a cathode conductive layer which are stacked, and a material of the electrochromic material layer comprises one of tungsten oxide and tetrathiafulvalene.
3. A foldable display device, comprising:
the display panel according to any one of claims 1 to 2, comprising a first display region and a second display region connected to the first display region;
the protective cover plate is attached to the first display area and the second display area;
a housing covering a non-display area portion of the display panel;
the control chip is used for driving the display panel to work and controlling the state of the electrochromic film, and the electrochromic film comprises a transparent state and a mirror reflection state;
the camera is arranged in the first display area and comprises a front state and a rear state.
4. The display device according to claim 3, wherein the display device further comprises an infrared recognition device for recognizing a position of a human face with respect to the display device and transmitting the position information of the human face to the driving chip.
5. The display device according to claim 4, wherein the driving chip determines to drive the first display area and the second display area according to the face position information.
6. The display device according to claim 4, wherein the driving chip determines whether to adopt a front-end state and a rear-end state of the camera according to the face position information.
7. A display device as claimed in claim 3, characterized in that the display device is a foldable device, the display device in a folded state employing the first display area, the display device in an unfolded state employing the first display area and the second display area.
8. The display device according to claim 7, wherein the control chip is configured to determine whether to adopt the first display region and the second display region according to a folding angle of the display device, and when the folding angle is greater than a predetermined angle, the control chip controls the electrochromic film to be in a transparent state while illuminating the first display region pixels, and when the folding angle is not greater than the predetermined angle, the control chip controls the electrochromic film to be in a mirror-reflective state while illuminating the first display region pixels and the second display region pixels.
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| CN112991950B (en) * | 2021-02-26 | 2023-01-13 | 维沃移动通信有限公司 | Folding screen and electronic equipment |
| CN112928149A (en) * | 2021-04-02 | 2021-06-08 | 维沃移动通信有限公司 | Display panel and electronic device |
| CN113326014A (en) * | 2021-06-22 | 2021-08-31 | 北京京东方技术开发有限公司 | Display device, display control method and storage medium |
| CN116052529A (en) * | 2022-05-13 | 2023-05-02 | 荣耀终端有限公司 | Folding display device |
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