CN117750834A - Flexible display panel, preparation method thereof and flexible display device - Google Patents
Flexible display panel, preparation method thereof and flexible display device Download PDFInfo
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Abstract
The application provides a flexible display panel, a preparation method thereof and a flexible display device. A flexible display panel includes a driving substrate; the pixel defining layer is arranged on one side of the driving substrate and protrudes out of the driving substrate to form a first area; the light emitting component is at least partially arranged in the first area; the light-emitting component comprises an anode, a light-emitting layer and a cathode which are sequentially stacked on the driving substrate; a cathode covering the pixel defining layer and the light emitting layer; the packaging layer is arranged on one side of the cathode, which is far away from the driving substrate; the auxiliary layer is arranged on one side of the packaging layer far away from the driving substrate, and the orthographic projection of the auxiliary layer on the driving substrate at least covers the orthographic projection of the light-emitting component on the driving substrate; the auxiliary layer is used for developing color in a stretched state to compensate the color gamut. According to the flexible display panel, the auxiliary layer is arranged on one side, far away from the driving substrate, of the packaging layer, so that the auxiliary layer develops color under a stretching state to compensate the color gamut, and the display effect after stretching is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a flexible display panel, a preparation method thereof and a flexible display device.
Background
Along with life forms and consumption upgrades, the application range of display products is wider and wider, and the Stretchable display technology can stretch the display screen in all directions like a rubber band to change the shape, can adapt to the surface with any shape, and can be flexibly applied to various fields such as consumer electronics, public display, medical treatment, biology, wearing, games, fashion, vehicle-mounted scenes and the like. Organic light emitting diode (Organic Light Emitting Diode, abbreviated as OLED) display panels have many advantages of full solid state, active light emission, high brightness, high contrast, ultra-thin, low power consumption, no viewing angle limitation, wide working temperature range and the like, and are receiving more and more attention.
In order to reduce cost and module thickness, the conventional flexible display panel adopts a COE (Color filter On Encapsulation, polarizer-free technology) technology. After stretching, the pixels can be seen to be elongated in the stretching direction, so that the thickness of the optical filtering component is thinned, and the display color gamut of the flexible display panel is reduced, and the display effect of the flexible display panel is further affected.
Disclosure of Invention
The application discloses a flexible display panel, a preparation method thereof and a flexible display device. The flexible display panel mainly solves the problems that the thickness of the optical filtering component is thinned in the stretching process, so that the display color gamut of the flexible display panel is reduced, and the display effect of the flexible display panel is further affected.
To solve the above technical problem, a first technical solution adopted in the present application is to provide a flexible display panel, including:
a driving substrate;
the pixel defining layer is arranged on one side of the driving substrate and protrudes out of the driving substrate to form a first area;
the light-emitting component is at least partially arranged in the corresponding first area; the light-emitting component comprises an anode, a light-emitting layer and a cathode which are sequentially stacked on the driving substrate;
the packaging layer is arranged on one side of the cathode, which is far away from the driving substrate;
further comprises:
the auxiliary layer is arranged on one side, far away from the driving substrate, of the packaging layer, and orthographic projection of the auxiliary layer on the driving substrate at least covers orthographic projection of the light-emitting component on the driving substrate;
wherein the auxiliary layer is used for developing color under a stretching state to compensate the color gamut.
Wherein the flexible display panel further comprises:
the spacer layer is arranged on one side of the packaging layer away from the driving substrate, and the spacer layer protrudes out of the packaging layer to form a second area; the auxiliary layer is also arranged in the corresponding second area;
the isolation structure is arranged on one side of the spacing layer and the auxiliary layer, which is far away from the driving substrate, and protrudes from the spacing layer and the auxiliary layer to form a third area;
the optical filtering component is arranged in the corresponding third area; the first area and the third area are correspondingly arranged.
And the front projection area of the auxiliary layer on the driving substrate is larger than or equal to the front projection area of the optical filtering component on the driving substrate when the flexible display panel is in an unstretched state.
Wherein the spacer layer is configured to:
when the flexible display panel is in an unstretched state, the spacer layer is in a transparent mode, so that light emitted by the light-emitting component is transmitted;
the flexible display panel is in a stretching state, and the spacing layer is in a shading mode so as to be used for shading the color gamut of light emitted by the light emitting component.
Wherein the auxiliary layer is configured to:
the auxiliary layer is in a transparent mode when the flexible display panel is in an unstretched state, so that light emitted by the light-emitting component is transmitted;
the auxiliary layer is in a color development mode under the stretching state of the flexible display panel, so as to be used for compensating the color gamut of the light emitted by the light emitting component.
Wherein the auxiliary layer comprises:
the first electrode is arranged on one side of the packaging layer far away from the driving substrate;
the ion storage layer is arranged on one side of the first electrode, which is far away from the driving substrate;
an electrolyte layer disposed on a side of the ion storage layer away from the drive substrate;
an electrochromic layer disposed on a side of the electrolyte layer away from the drive substrate;
a second electrode disposed on a side of the electrochromic layer away from the driving substrate;
wherein, the first electrode and the second electrode are both connected with an external power supply.
The flexible display panel is in an unstretched state, the external power supply does not apply voltage, and the auxiliary layer is in a transparent mode, so that light emitted by the light-emitting component is transmitted;
in the stretching state of the flexible display panel, the external power supply applies forward voltage to the auxiliary layer to enable ions in the ion storage layer to be implanted into the electrochromic layer, and the electrochromic layer develops color to compensate the color gamut of light rays emitted by the light emitting component;
and in the state that the flexible display panel is restored after being stretched, the external power supply applies reverse voltage to the auxiliary layer, so that ions in the electrochromic layer return to the ion storage layer, the electrochromic layer fades, and the auxiliary layer restores to a transparent mode.
Wherein the sum of the thicknesses of the auxiliary layer and the encapsulation layer is not more than 14 μm.
In order to solve the above technical problem, a second technical solution adopted in the present application is a flexible display device, including:
a flexible display panel, which is any one of the flexible display panels mentioned above;
and the driving circuit drives the flexible display panel to display.
In order to solve the above technical problems, a third technical solution adopted in the present application is to provide a method for manufacturing a flexible display panel, including:
providing a driving substrate;
providing a pixel defining layer on the driving substrate, the pixel defining layer protruding from the driving substrate to form a first region;
disposing a portion of the light emitting assembly within the first region; the light-emitting assembly comprises an anode, a light-emitting layer and a cathode which are sequentially stacked on the driving substrate;
an auxiliary layer is arranged on one side of the cathode, which is far away from the driving substrate; the orthographic projection of the auxiliary layer on the driving substrate at least covers the orthographic projection of the light-emitting component on the driving substrate; wherein the auxiliary layer is used for developing color under a stretching state to compensate the color gamut.
The application provides a flexible display panel, a preparation method thereof and a flexible display device. A flexible display panel includes a driving substrate; the pixel defining layer is arranged on one side of the driving substrate and protrudes out of the driving substrate to form a first area; the light-emitting component is at least partially arranged in the corresponding first area; the light-emitting component comprises an anode, a light-emitting layer and a cathode which are sequentially stacked on the driving substrate; a cathode covering the pixel defining layer and the light emitting layer; the packaging layer is arranged on one side of the cathode, which is far away from the driving substrate; the auxiliary layer is arranged on one side of the packaging layer far away from the driving substrate, and the orthographic projection of the auxiliary layer on the driving substrate at least covers the orthographic projection of the light-emitting component on the driving substrate; wherein the auxiliary layer is used for developing color in a stretched state to compensate the color gamut. According to the flexible display panel, the auxiliary layer is arranged on one side, far away from the driving substrate, of the packaging layer, so that the auxiliary layer develops color under a stretching state to compensate the color gamut, and the display effect after stretching is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural diagram of a flexible display panel according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of an auxiliary layer according to an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a flexible display device according to an embodiment of the present disclosure;
FIG. 4 is a flowchart illustrating steps of a method for manufacturing a flexible display panel according to an embodiment of the present disclosure;
FIG. 5a is a schematic diagram of step S1;
FIG. 5b is a schematic diagram of step S2;
FIG. 5c is a schematic diagram of step S3;
FIG. 5d is a schematic diagram of step S4;
FIG. 5e is a diagram of step S5;
FIG. 5f is a schematic diagram of step S6;
fig. 6 is a schematic structural diagram of steps S7 to S8;
fig. 7 is a schematic diagram of the specific structure of step S601 to step S605.
Reference numerals illustrate:
10-driving a substrate; 20-a pixel defining layer; 30-a light emitting assembly; 31-anode; 32-a light emitting layer; 33-cathode; 40-packaging layer; 50-spacer layer; 60-an auxiliary layer; 61-a first electrode; 62-an ion storage layer; 63-an electrolyte layer; 64-electrochromic layer; 65-a second electrode; 70-isolation structures; an 80-filter assembly; 100-a flexible display panel; 200-a driving circuit; 1000-a flexible display device; a-a first region; b-a second region; c-third region.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, interfaces, techniques, etc., in order to provide a thorough understanding of the present application.
The terms "first," "second," "third," and the like in this application 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, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. All directional indications (such as up, down, left, right, front, back … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular gesture (as shown in the drawings), and if the particular gesture changes, the directional indication changes accordingly. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The present application is described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a flexible display panel according to an embodiment of the present application. The present application provides a flexible display panel 100. The flexible display panel 100 includes a driving substrate 10, a pixel defining layer 20, a light emitting assembly 30, an encapsulation layer 40, and an auxiliary layer 60.
The driving substrate 10 is used for driving the light emitting assembly 30 to emit light. The pixel defining layer 20 is disposed on one side of the driving substrate 10. The pixel defining layer 20 may be used to absorb light that is not reflected or absorbed by the light emitting element 30, thereby advantageously reducing the reflected light. The pixel defining layer 20 protrudes from the driving substrate 10 to form a first region a. The light emitting assemblies 30 are partially disposed in the corresponding first regions a. The light emitting module 30 includes an anode 31, a light emitting layer 32, and a cathode 33, which are stacked. The anode 31 is disposed on one side of the driving substrate 10 in the first region a, the light emitting layer 32 is disposed on one side of the anode 31 away from the driving substrate 10 in the first region a, and the cathode 33 covers the pixel defining layer 20 and the light emitting layer 32. The anode 31 and the cathode 33 are used to control the light emitting layer 32 to emit light. The anode 31 is made of materials including, but not limited to, aluminum, silver and oxides thereof, indium tin oxide, and a stack of metal and indium tin oxide. The cathode 33 is made of a metal material including, but not limited to, aluminum, gold, silver, aluminum magnesium alloy, etc. The light emitting elements 30 are plural, and each light emitting element 30 corresponds to a pixel of one color. The first area a is also plural. The arrangement of the light emitting elements 30 is not limited in this application. The following description will mainly take two adjacent light emitting modules 30 as examples. In the present embodiment, one first area a is provided with one light emitting element 30. The encapsulation layer 40 is disposed on a side of the cathode 33 away from the driving substrate 10. The light emitting component 30 is sealed by the encapsulation layer 40 to avoid the reaction of water oxygen and the light emitting component 30, so as to achieve the purpose of protecting the light emitting component 30. In the process of manufacturing the display panel, the side of the encapsulation layer 40 facing away from the driving substrate 10 may be made more flat by a planarization process.
The encapsulation layer 40 is located at a side far from the driving substrate 10, and the auxiliary layer 60 is used for developing color in a stretched state to compensate the color gamut. In a specific embodiment, the plurality of auxiliary layers 60 includes a red auxiliary layer, a green auxiliary layer, and a blue auxiliary layer. Illustratively, the red auxiliary layer is disposed corresponding to the red pixel, and develops color in a stretched state to compensate for the color gamut. Specifically, the front projection of the auxiliary layer 60 on the driving substrate 10 at least covers the front projection of the light emitting component 30 on the driving substrate 10. It can also be understood that the front projection area of the auxiliary layer 60 on the driving substrate 10 is greater than or equal to the front projection area of the light emitting component 30 on the driving substrate 10, so that the stretched auxiliary layer 60 can perform color gamut compensation better.
Specifically, the sum of the thicknesses of the auxiliary layer 60 and the encapsulation layer 40 is not more than 14 μm. The sum of the thicknesses of the auxiliary layer 60 and the encapsulation layer 40 of the flexible display panel 100 is not increased or changed in thickness as compared to the encapsulation film layer of the related art, and the color gamut compensation is still performed in a stretched state without increasing the thickness of the flexible display panel 100. The flexible display panel 100 provided by the embodiment of the application sets up the auxiliary layer 60 in the second area B, so that the auxiliary layer 60 develops color under the stretching state to compensate the color gamut, and further the display effect after stretching can be improved, and the color gamut stability of the flexible display panel 100 before stretching and after stretching is improved.
In a specific embodiment, the auxiliary layer 60 provided in the embodiment of the present application is configured such that the auxiliary layer 60 is in a transparent mode when the flexible display panel 100 is in an unstretched state, so that the light emitted by the light emitting component 30 is transmitted; the auxiliary layer 60 is in a color development mode in the stretched state of the flexible display panel 100 for compensating the color gamut of the light emitted from the light emitting assembly 30. Wherein, the auxiliary layer 60 is transparent in an unstretched state and does not affect normal luminescence; the auxiliary layer 60 is in a color development mode in a stretched state for compensating the color gamut of the light emitted from the light emitting component 30.
Further, the flexible display panel 100 further includes a spacer layer 50. The spacer layer 50 is disposed on a side of the encapsulation layer 40 away from the driving substrate 10, and the spacer layer 50 protrudes from the encapsulation layer 40 to form a second region B. The auxiliary layer 60 is disposed in the corresponding second region B. It will be appreciated that the auxiliary layers 60 are in contact with each other for gamut compensation purposes, and that the spacer layer 50 is not a necessary feature. Therefore, the flexible display panel 100 may not be provided with the spacer layer 50, and the embodiment of the present application will mainly be described by taking the spacer layer 50 as an example.
With continued reference to fig. 1, the flexible display panel 100 further includes an isolation structure 70 and a filter assembly 80. The isolation structure 70 is disposed on a side of the spacer layer 50 and the auxiliary layer 60 away from the driving substrate 10, and the isolation structure 70 protrudes from the spacer layer 50 and the auxiliary layer 60 to form a third region C. The isolation structure 70 is made of a light absorbing material, for example, may be a black matrix, and in the case that ambient light is incident on the flexible display panel 100, the isolation structure 70 may absorb the light incident from the outside, so as to reduce the reflection intensity of the ambient light from the flexible display panel 100 and improve the display performance.
The filter assembly 80 is disposed in the corresponding third region C. In a specific embodiment, the plurality of filter assemblies 80 include a red filter assembly, a green filter assembly, and a blue filter assembly, that is, the filter assemblies 80 in the display panel include a red filter assembly, a green filter assembly, and a blue filter assembly. Illustratively, the red filter assembly allows only red light to pass through. Specifically, the first area a and the third area C are correspondingly disposed. The flexible display panel 100 is thinned as a whole when stretched, and then the optical filter assembly 80 is thinned, so that the color gamut of the flexible display panel 100 is narrowed, and the auxiliary layer 60 develops color to compensate the color gamut by arranging the auxiliary layer 60 in the second area B in a stretched state, so that the auxiliary layer 60 supplements the thinned optical filter assembly 80, thereby improving the display effect of the flexible display panel 100 after stretching and improving the color gamut stability of the flexible display panel 100 before stretching and after stretching. Specifically, in the unstretched state of the flexible display panel 100, the front projection area of the auxiliary layer 60 on the driving substrate 10 is greater than or equal to the front projection area of the filter assembly 80 on the driving substrate 10. The auxiliary layer 60 with larger area can provide more stretching allowance, so that the situation that the stretched auxiliary layer 60 is smaller than the stretched filter assembly 80 is avoided, and the stretched auxiliary layer 60 can perform color gamut compensation better.
Referring to fig. 2, fig. 2 is a schematic structural diagram of an auxiliary layer according to an embodiment of the present application. The auxiliary layer 60 includes a first electrode 61, an ion storage layer 62, an electrolyte layer 63, an electrochromic layer 64, and a second electrode 65. The first electrode 61 is disposed on a side of the encapsulation layer 40 away from the driving substrate 10, and the first electrode 61 is a transparent electrode, so that light emitted by the light emitting component 30 can be transmitted normally. The ion storage layer 62 is disposed on a side of the first electrode 61 away from the driving substrate 10, and is used for providing or receiving ions migrating during the color change process to maintain the electrical balance of the auxiliary layer 60. The electrolyte layer 63 is provided on a side of the ion storage layer 62 remote from the drive substrate 10, and serves to transport ion-conducting current between the first electrode 61 and the second electrode 65. The electrochromic layer 64 is disposed on a side of the electrolyte layer 63 away from the driving substrate 10, and is used for generating oxidation-reduction reaction under the action of an electric field, and displaying different color states after losing electrons. Specifically, electrochromic refers to a reversible color change phenomenon of a material under the action of an electric field. The second electrode 65 is disposed on a side of the electrochromic layer 64 away from the driving substrate 10, and the second electrode 65 is also a transparent electrode, so that light emitted by the light emitting component 30 can be transmitted normally.
Wherein both the first electrode 61 and the second electrode 65 are connected to an external power source (not shown). Specifically, the voltage applied by the external power source ranges from 0V to 3V.
The flexible display panel 100 has the following states: in the unstretched state of the flexible display panel 100, no voltage is applied from the external power source, and the auxiliary layer 60 is in a transparent mode, so that light emitted from the light emitting element 30 is transmitted; in the flexible display panel 100 in a stretched state, an external power source applies a forward voltage to the auxiliary layer 60 to implant ions in the ion storage layer 62 into the electrochromic layer 64, and the electrochromic layer 64 develops color to compensate the color gamut of the light emitted from the light emitting component 30; in a state where the flexible display panel 100 is restored after stretching, an external power supply applies a reverse voltage to the auxiliary layer 60, so that ions in the electrochromic layer 64 return to the ion storage layer 62, the electrochromic layer 64 is discolored, and the auxiliary layer 60 returns to a transparent mode.
In a specific embodiment, the flexible display panel 100 is in an unstretched state, no voltage is applied by an external power source, and the auxiliary layer 60 is in a transparent mode, so that the light emitted by the light emitting component 30 can be transmitted normally. In the flexible display panel 100, in a stretched state, an external power supply applies a forward voltage to the first electrode 61 and the second electrode 65 of the auxiliary layer 60, and ions in the ion storage layer 62 are injected into the electrochromic layer 64 under the action of an external electric field, so that the electrochromic layer 64 is further developed to compensate the color gamut of the light emitted by the light emitting component 30. In a state where the flexible display panel 100 is restored after the stretching is stopped, an external power supply applies a reverse voltage to the first electrode 61 and the second electrode 65 of the auxiliary layer 60, and ions in the electrochromic layer 64 are returned to the ion storage layer 62 by an external electric field, and further the electrochromic layer 64 is discolored to restore the transparent mode.
In other embodiments, there is also provided a flexible display panel 100 as shown in fig. 1 and 2, except that the state of the flexible display panel 100 is different, and in the specific embodiment, the flexible display panel 100 has the following states: in the unstretched state of the flexible display panel 100, the spacer layer 50 is in a transparent mode, so that light emitted from the light emitting component 30 is transmitted; in the stretched state of the flexible display panel 100, the spacer layer 50 is in a shading mode for shading the color gamut of the light emitted by the light emitting assembly 30, and the auxiliary isolation structure 70 has been shading the light.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a flexible display device according to an embodiment of the present application. The present application provides a flexible display device 1000. The flexible display device 1000 includes a flexible display panel 100 and a driving circuit 200. The flexible display panel 100 is any flexible display panel 100 related to the above embodiments, and specific structures and functions of the flexible display panel 100 are described in the above embodiments, which are not described herein. The driving circuit 200 is used for driving the flexible display panel 100 to display images. The flexible display device 1000 may be a mobile or fixed terminal having the flexible display panel 100 such as a mobile phone, a television, or the like.
Referring to fig. 4 and fig. 5a to 5f, fig. 4 is a flowchart illustrating steps of a method for manufacturing a flexible display panel according to an embodiment of the present application. Fig. 5a to 5f are schematic structural diagrams of the flexible display panel manufacturing method according to the embodiment of the present application after each manufacturing step is performed. The present application also provides a method for manufacturing the flexible display panel 100, which can be used to manufacture the flexible display panel 100 provided in the above embodiment, where the flexible display panel 100 further includes the spacer layer 50 in this embodiment is mainly described in the manufacturing example. The preparation method comprises the following steps:
step S1: a driving substrate is provided.
Referring to fig. 5a, fig. 5a is a schematic diagram of step S1. A driving substrate 10 is provided, and the driving substrate 10 is used for driving the light emitting component 30 to emit light.
Step S2: a pixel defining layer is disposed on the driving substrate, and the pixel defining layer protrudes from the driving substrate to form a first region.
Referring to fig. 5b, fig. 5b is a schematic diagram of step S2. The pixel defining layer 20 is disposed on the driving substrate 10, and the pixel defining layer 20 protrudes from the driving substrate 10 to form a first region a. The pixel defining layer 20 may be used to absorb light that is not reflected or absorbed by the light emitting device 30, thereby reducing reflected light.
Step S3: disposing a portion of the light emitting assembly within the first region; the light-emitting assembly comprises an anode, a light-emitting layer and a cathode which are sequentially stacked on the driving substrate.
Referring to fig. 5c, fig. 5c is a schematic diagram of step S3. A portion of the light emitting assembly 30 is disposed within the first region a. The light emitting elements 30 are plural, and each light emitting element 30 corresponds to a pixel of one color. The first area a is also plural. The arrangement of the light emitting elements 30 is not limited in this application. In the present embodiment, one first area a is provided with one light emitting element 30. An anode 31 is provided on one side of the drive substrate 10 in the first region a. A light emitting layer 32 is provided on the side of the anode 31 in the first region a remote from the drive substrate 10. Finally, a cathode 33 is provided covering the pixel defining layer 20 and the light emitting layer 32.
The anode 31 and the cathode 33 are used to control the light emitting layer 32 to emit light. The anode 31 is made of materials including, but not limited to, aluminum, silver and oxides thereof, indium tin oxide, and a stack of metal and indium tin oxide. The cathode 33 is made of a metal material including, but not limited to, aluminum, gold, silver, aluminum magnesium alloy, etc.
Step S4: and an encapsulation layer is arranged on one side of the cathode away from the driving substrate.
Referring to fig. 5d, fig. 5d is a schematic diagram of step S4. An encapsulation layer 40 is provided on the side of the cathode 33 remote from the drive substrate 10. The light emitting component 30 is sealed by the encapsulation layer 40 to avoid the reaction of water oxygen and the light emitting component 30, so as to achieve the purpose of protecting the light emitting component 30.
Step S5: and a spacer layer is arranged on one side of the encapsulation layer away from the driving substrate, and protrudes out of the encapsulation layer to form a second area.
Referring to fig. 5e, fig. 5e is a schematic diagram of step S5. A spacer layer 50 is disposed on a side of the encapsulation layer 40 away from the driving substrate 10, and the spacer layer 50 protrudes from the encapsulation layer 40 to form a second region B.
Step S6: providing an auxiliary layer in the second region; the front projection of the auxiliary layer on the driving substrate at least covers the front projection of the light-emitting component on the driving substrate; wherein the auxiliary layer is used for developing color in a stretched state to compensate the color gamut.
Referring to fig. 5f, fig. 5f is a schematic diagram of step S6. An auxiliary layer 60 is provided in the second region B (the auxiliary layer 60 is provided on the side of the encapsulation layer 40 remote from the drive substrate 10), the auxiliary layer 60 being for developing color in a stretched state to compensate for the color gamut. Specifically, the front projection of the auxiliary layer 60 on the driving substrate 10 at least covers the front projection of the light emitting component 30 on the driving substrate 10. It can also be understood that the front projection area of the auxiliary layer 60 on the driving substrate 10 is greater than or equal to the front projection area of the light emitting component 30 on the driving substrate 10, so that the stretched auxiliary layer 60 can perform color gamut compensation better.
Specifically, the sum of the thicknesses of the auxiliary layer 60 and the encapsulation layer 40 is not more than 14 μm. The sum of the thicknesses of the auxiliary layer 60 and the encapsulation layer 40 of the flexible display panel 100 is not increased or changed in thickness compared to the encapsulation film layer of the related art, and the compensation color gamut in the stretched state is still performed without increasing the thickness of the flexible display panel 100.
It will be appreciated that the method is mainly described by taking the flexible display panel 100 further including the spacer layer 50 as an example, if the flexible display panel 100 to be manufactured does not include the spacer layer 50, the next step S6 may be directly performed without performing the step S5, and the auxiliary layer 60 in the step S6 is disposed on the side of the encapsulation layer 40 away from the driving substrate 10. Those skilled in the art can perform the fine tuning of the steps within a reasonable range depending on the actual structure, and are within the scope of the present application.
In a specific embodiment, after the auxiliary layer 60 is disposed in the second area B, the method further includes:
step S7: and an isolation structure is arranged on one side of the spacing layer and the auxiliary layer away from the driving substrate, and protrudes from the spacing layer and the auxiliary layer to form a third area.
Step S8: disposing a filter assembly within the third region; wherein the first region and the third region are correspondingly arranged.
In a specific embodiment, referring to fig. 6, fig. 6 is a schematic structural diagram of step S7 to step S8. Specifically, an isolation structure 70 is disposed on a side of the spacer layer 50 and the auxiliary layer 60 away from the driving substrate 10, and the isolation structure 70 protrudes from the spacer layer 50 and the auxiliary layer 60 to form a third region C. Disposing a filter assembly 80 in the third region C; wherein the first area a and the third area C are correspondingly arranged.
The isolation structure 70 is made of a light absorbing material, for example, may be a black matrix, and in the case that ambient light is incident on the flexible display panel 100, the isolation structure 70 may absorb the light incident from the outside, so as to reduce the reflection intensity of the ambient light from the flexible display panel 100 and improve the display performance. In a specific embodiment, the plurality of filter assemblies 80 include a red filter assembly, a green filter assembly, and a blue filter assembly, that is, the filter assemblies 80 in the display panel include a red filter assembly, a green filter assembly, and a blue filter assembly. Illustratively, the red filter assembly allows only red light to pass through.
The flexible display panel 100 can be manufactured by the above manufacturing method. The flexible display panel 100 provided by the embodiment of the application sets up the auxiliary layer 60 in the second area B, so that the auxiliary layer 60 develops color under the stretching state to compensate the color gamut, and further the display effect after stretching can be improved, and the color gamut stability of the flexible display panel 100 before stretching and after stretching is improved.
In a specific embodiment, in the preparation method provided in the embodiment of the present application, a specific step flow in step S6 may be:
step S601: the first electrode is arranged on one side of the encapsulation layer away from the driving substrate.
Step S602: an ion storage layer is disposed on a side of the first electrode remote from the drive substrate.
Step S603: an electrolyte layer is disposed on a side of the ion storage layer remote from the drive substrate.
Step S604: an electrochromic layer is provided on a side of the electrolyte layer remote from the drive substrate.
Step S605: a second electrode is arranged on one side of the electrochromic layer away from the driving substrate; wherein, the first electrode and the second electrode are both connected with an external power supply.
Referring to fig. 7, fig. 7 is a schematic diagram showing the specific structure of steps S601 to S605. Namely, a first electrode 61, an ion storage layer 62, an electrolyte layer 63, an electrochromic layer 64, and a second electrode 65 are provided in this order on the side of the encapsulation layer 40 remote from the drive substrate 10. The first electrode 61 is a transparent electrode, and can allow light emitted from the light emitting element 30 to normally pass therethrough. The ion storage layer 62 is used to provide or accept ions that migrate during the color change process to maintain the electrical balance of the auxiliary layer 60. The electrolyte layer 63 serves to transport an ion-conducting current between the first electrode 61 and the second electrode 65. The electrochromic layer 64 is used for generating oxidation-reduction reaction under the action of an electric field, and presents different color states after losing electrons. The second electrode 65 is also a transparent electrode, so that the light emitted from the light emitting component 30 can be transmitted normally. Wherein the first electrode 61 and the second electrode 65 are both connected to an external power source.
It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the patent application, and all equivalent structures or equivalent processes using the descriptions and the contents of the present application or other related technical fields are included in the scope of the patent application.
Claims (10)
1. A flexible display panel, comprising:
a driving substrate;
the pixel defining layer is arranged on one side of the driving substrate and protrudes out of the driving substrate to form a first area;
the light-emitting component is at least partially arranged in the corresponding first area; the light-emitting component comprises an anode, a light-emitting layer and a cathode which are sequentially stacked on the driving substrate;
the packaging layer is arranged on one side of the cathode, which is far away from the driving substrate;
characterized by further comprising:
the auxiliary layer is arranged on one side, far away from the driving substrate, of the packaging layer, and orthographic projection of the auxiliary layer on the driving substrate at least covers orthographic projection of the light-emitting component on the driving substrate;
wherein the auxiliary layer is used for developing color under a stretching state to compensate the color gamut.
2. The flexible display panel of claim 1, further comprising:
the spacer layer is arranged on one side of the packaging layer away from the driving substrate, and the spacer layer protrudes out of the packaging layer to form a second area; the auxiliary layer is also arranged in the corresponding second area;
the isolation structure is arranged on one side of the spacing layer and the auxiliary layer, which is far away from the driving substrate, and protrudes from the spacing layer and the auxiliary layer to form a third area;
the optical filtering component is arranged in the corresponding third area; the first area and the third area are correspondingly arranged.
3. The flexible display panel of claim 2, wherein an orthographic projection area of the auxiliary layer on the driving substrate is greater than or equal to an orthographic projection area of the filter assembly on the driving substrate in an unstretched state of the flexible display panel.
4. The flexible display panel of claim 2, wherein the spacer layer is configured to:
when the flexible display panel is in an unstretched state, the spacer layer is in a transparent mode, so that light emitted by the light-emitting component is transmitted;
the flexible display panel is in a stretching state, and the spacing layer is in a shading mode so as to be used for shading the color gamut of light emitted by the light emitting component.
5. The flexible display panel of claim 1, wherein the auxiliary layer is configured to:
the auxiliary layer is in a transparent mode when the flexible display panel is in an unstretched state, so that light emitted by the light-emitting component is transmitted;
the auxiliary layer is in a color development mode under the stretching state of the flexible display panel, so as to be used for compensating the color gamut of the light emitted by the light emitting component.
6. The flexible display panel of claim 1, wherein the auxiliary layer comprises:
the first electrode is arranged on one side of the packaging layer far away from the driving substrate;
the ion storage layer is arranged on one side of the first electrode, which is far away from the driving substrate;
an electrolyte layer disposed on a side of the ion storage layer away from the drive substrate;
an electrochromic layer disposed on a side of the electrolyte layer away from the drive substrate;
a second electrode disposed on a side of the electrochromic layer away from the driving substrate;
wherein, the first electrode and the second electrode are both connected with an external power supply.
7. The flexible display panel according to claim 6, wherein the external power supply does not apply a voltage in an unstretched state of the flexible display panel, and the auxiliary layer is in a transparent mode to transmit light emitted from the light emitting element;
in the stretching state of the flexible display panel, the external power supply applies forward voltage to the auxiliary layer to enable ions in the ion storage layer to be implanted into the electrochromic layer, and the electrochromic layer develops color to compensate the color gamut of light rays emitted by the light emitting component;
and in the state that the flexible display panel is restored after being stretched, the external power supply applies reverse voltage to the auxiliary layer, so that ions in the electrochromic layer return to the ion storage layer, the electrochromic layer fades, and the auxiliary layer restores to a transparent mode.
8. The flexible display panel of claim 1, wherein a sum of thicknesses of the auxiliary layer and the encapsulation layer is not greater than 14 μιη.
9. A flexible display device, comprising:
a flexible display panel according to any one of claims 1 to 8;
and the driving circuit drives the flexible display panel to display.
10. A method of manufacturing a flexible display panel, comprising:
providing a driving substrate;
providing a pixel defining layer on the driving substrate, the pixel defining layer protruding from the driving substrate to form a first region;
disposing a portion of the light emitting assembly within the first region; the light-emitting assembly comprises an anode, a light-emitting layer and a cathode which are sequentially stacked on the driving substrate;
an encapsulation layer is arranged on one side of the cathode, which is far away from the driving substrate;
an auxiliary layer is arranged on one side of the packaging layer far away from the driving substrate; the orthographic projection of the auxiliary layer on the driving substrate at least covers the orthographic projection of the light-emitting component on the driving substrate; wherein the auxiliary layer is used for developing color under a stretching state to compensate the color gamut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311485479.8A CN117750834A (en) | 2023-11-08 | 2023-11-08 | Flexible display panel, preparation method thereof and flexible display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311485479.8A CN117750834A (en) | 2023-11-08 | 2023-11-08 | Flexible display panel, preparation method thereof and flexible display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117750834A true CN117750834A (en) | 2024-03-22 |
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ID=90278269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311485479.8A Pending CN117750834A (en) | 2023-11-08 | 2023-11-08 | Flexible display panel, preparation method thereof and flexible display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117750834A (en) |
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2023
- 2023-11-08 CN CN202311485479.8A patent/CN117750834A/en active Pending
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