CN114068664A - Flexible display panel, manufacturing method thereof and flexible display device - Google Patents
Flexible display panel, manufacturing method thereof and flexible display device Download PDFInfo
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- CN114068664A CN114068664A CN202111360154.8A CN202111360154A CN114068664A CN 114068664 A CN114068664 A CN 114068664A CN 202111360154 A CN202111360154 A CN 202111360154A CN 114068664 A CN114068664 A CN 114068664A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
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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
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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Abstract
The present invention provides a flexible display panel, comprising: the display device comprises a display area and a frame area surrounding the display area, wherein the frame area comprises an upper frame area, a lower frame area and a side frame area, the upper frame area and the lower frame area are oppositely arranged, the side frame area is connected with the upper frame area and the lower frame area, the upper frame area comprises at least one pyroelectric sensing area, and the pyroelectric sensing area is provided with: a flexible substrate; a thin film encapsulation layer on the flexible substrate; the pyroelectric sensor is positioned on one side, far away from the flexible substrate, of the film packaging layer and is used for generating electric signals with different intensities after receiving infrared radiation with different intensities. The flexible display panel provided by the embodiment of the invention does not need to be opened in a sensing area to accommodate a sensor, and can realize a full-screen.
Description
Technical Field
The invention relates to the technical field of display, in particular to a flexible display panel, a manufacturing method thereof and a flexible display device.
Background
With the rise of the flexible OLED (Organic Light-Emitting Diode, abbreviated as OLED) technology, the full-screen technology and the full-screen mobile phone become one of the hottest technologies at present, and are popular and sought by users.
The full screen technology is a wider definition of ultra-high screen than the design of mobile phones in the display industry. The explanation is that the front of the mobile phone is a screen, the display interface of the mobile phone is completely covered by the screen, and the four frame positions of the mobile phone are designed without frames, so that the ultrahigh screen occupation ratio close to 100% is pursued. However, the mobile phone is limited by indispensable basic functional requirements of other mobile phones such as a front camera of the mobile phone, a mobile phone receiver, a distance sensor and a light sensor, and at present, a certain gap is required to be reserved above a mobile phone screen to accommodate the functional components, so that the mobile phone with a full screen declared in the industry is only a mobile phone with an ultrahigh screen ratio temporarily, and a mobile phone with a front screen accounting for 100% of the mobile phone front screen, namely, a "bang screen" and a "drip screen" are not provided. By adding an ultra-narrow frame design, the real screen occupation ratio can reach about 80-90%, and a certain distance is reserved between the screen and a 100% overall screen.
Disclosure of Invention
The embodiment of the invention provides a flexible display panel, a manufacturing method thereof and a flexible display device, which can avoid opening in a sensing area to accommodate a sensor and solve the problem that the prior art can not really realize a full-screen.
A first aspect of the present invention provides a flexible display panel comprising: the display device comprises a display area and a frame area surrounding the display area, wherein the frame area comprises an upper frame area, a lower frame area and a side frame area, the upper frame area and the lower frame area are oppositely arranged, the side frame area is connected with the upper frame area and the lower frame area, the display device is characterized in that the upper frame area comprises at least one pyroelectric sensing area, and the pyroelectric sensing area is provided with:
a flexible substrate;
a thin film encapsulation layer on the flexible substrate;
the pyroelectric sensor is positioned on one side, far away from the flexible substrate, of the film packaging layer and is used for generating electric signals with different intensities after receiving infrared radiation with different intensities.
Optionally, the pyroelectric sensor comprises:
the first induction electrode layer is positioned on one side, far away from the flexible substrate, of the thin film packaging layer and comprises at least one first induction electrode;
the pyroelectric film is positioned on one side, away from the flexible substrate, of the first sensing electrode layer and is used for releasing electric charges when the temperature is changed due to infrared radiation;
the second sensing electrode layer is positioned on one side, far away from the flexible substrate, of the pyroelectric film and comprises at least one second sensing electrode;
the at least one first sensing electrode corresponds to the at least one second sensing electrode one to one, and the orthographic projection of each first sensing electrode on the flexible substrate is overlapped with the orthographic projection of the corresponding second sensing electrode on the flexible substrate.
Optionally, the display area is provided with:
the flexible substrate;
a thin film transistor array layer on the flexible substrate;
the OLED device layer is positioned on one side, away from the flexible substrate, of the thin film transistor array layer and comprises a plurality of light emitting units, and each light emitting unit comprises an anode, a cathode and an organic light emitting layer positioned between the anode and the cathode;
the thin film packaging layer is positioned on one side, far away from the flexible substrate, of the OLED device layer;
the first touch electrode layer is positioned on one side, far away from the flexible substrate, of the thin film packaging layer and comprises at least one first touch electrode;
the insulating layer is positioned on one side, away from the flexible substrate, of the first touch electrode layer;
the second touch electrode layer is positioned on one side, away from the flexible substrate, of the insulating layer and comprises at least one second touch electrode;
the at least one first touch electrode and the at least one second touch electrode are arranged in a crossed manner.
Optionally, the first sensing electrode layer and the first touch electrode layer are made of the same material on the same layer; and
the second induction electrode layer and the second touch electrode layer are made of the same material on the same layer.
Optionally, the flexible display panel further comprises:
the flexible circuit board is arranged in the lower frame area, and a control circuit of the pyroelectric sensor is arranged on the flexible circuit board.
Optionally, the flexible display panel further comprises:
the pyroelectric sensor comprises at least one first sensing electrode lead, at least one second sensing electrode lead and at least one second sensing electrode lead, wherein one end of the first sensing electrode lead is connected with the first sensing electrode, the other end of the first sensing electrode lead is connected with a control circuit of the pyroelectric sensor, and the first sensing electrode lead comprises a first part positioned in an upper frame area, a second part connected with the first part and positioned in a side frame area, and a third part connected with the second part and positioned in a lower frame area;
one end of the second sensing electrode lead is connected with the second sensing electrode, the other end of the second sensing electrode lead is connected with a control circuit of the pyroelectric sensor, and the second sensing electrode lead comprises a fourth part located in the upper frame area, a fifth part connected with the fourth part and located in the side frame area, and a sixth part connected with the fifth part and located in the lower frame area.
Optionally, the material of the pyroelectric film comprises at least one of the following:
polyvinylidene fluoride, polyvinyl fluoride.
Optionally, the pyroelectric sensing region is further provided with: and the protective layer is positioned on one side of the second sensing electrode layer, which is far away from the flexible substrate.
Optionally, the flexible display panel further comprises:
the polaroids are positioned in the display area and the peripheral area and are positioned on one side, far away from the flexible substrate, of the protective layer;
the cover plate glass is positioned on one side of the polaroid, which is far away from the flexible substrate;
and the optical transparent adhesive is positioned between the polaroid and the cover plate glass and is used for adhering the polaroid and the cover plate glass.
A second aspect of the invention provides a display device comprising the flexible display panel described above.
A third aspect of the present invention provides a method for manufacturing a flexible display panel, the flexible display panel including: the display device comprises a display area and a frame area surrounding the display area, wherein the frame area comprises an upper frame area, a lower frame area and a side frame area, the upper frame area and the lower frame area are oppositely arranged, the side frame area is connected with the upper frame area and the lower frame area, the upper frame area comprises at least one pyroelectric sensing area, and the manufacturing method is characterized by comprising the following steps of:
arranging a flexible substrate in the pyroelectric sensing area;
forming a thin film encapsulation layer on the flexible substrate;
and forming a pyroelectric sensor positioned on one side of the film packaging layer, which is far away from the flexible substrate, wherein the pyroelectric sensor is used for generating electric signals with different intensities after receiving infrared radiation with different intensities.
The embodiment of the invention has the following beneficial effects:
the flexible display panel provided by the embodiment of the invention can detect the change of temperature through the pyroelectric sensor, generate an electric signal and feed back the electric signal to the control chip of the mobile phone. Under the control of the control chip of the mobile phone, the backlight lamp is turned off, so that the electric energy loss of the battery is saved, and the standby time of the mobile phone is prolonged. Meanwhile, the pyroelectric sensor provided by the embodiment of the invention does not need to be opened in a sensing area to accommodate the sensor, so that a full screen can be realized.
Drawings
Fig. 1 is a top view of a flexible display panel according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a flexible display panel according to an embodiment of the present invention, taken along the section line AA' in FIG. 1;
fig. 3 is a schematic diagram of a film structure of a flexible display panel in a display area according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a film structure of a flexible display panel in a peripheral area according to an embodiment of the present invention;
fig. 5 is a response diagram of the pyroelectric sensor provided by the embodiment of the invention under two touches;
fig. 6 is a flowchart of a method for manufacturing a flexible display panel according to an embodiment of the present invention.
Reference numerals
1 display area
2 frame area
3 pyroelectric sensing area
4 flexible circuit board
Control circuit of 5 pyroelectric sensor
6 Flexible substrate
7 thin film encapsulation layer
8 first sensing electrode layer
9 pyroelectric film
10 second sensing electrode layer
11 protective layer
12 polarizer
13 optical transparent adhesive
14 cover plate glass
15 thin film transistor array layer
16 OLED device layer
17 first touch electrode layer
18 insulating layer
19 second touch electrode layer
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
In the related art, an opening is usually formed above a mobile phone screen to accommodate essential basic functional elements of a mobile phone, such as a front camera, a handset, a distance sensor, a light sensor, and the like, so that a full-screen cannot be really realized.
To solve the above problems, embodiments of the present invention provide a flexible display panel.
The flexible display panel provided by the embodiment of the invention comprises: the display device comprises a display area and a frame area surrounding the display area, wherein the frame area comprises an upper frame area, a lower frame area and a side frame area, the upper frame area and the lower frame area are oppositely arranged, the side frame area is connected with the upper frame area and the lower frame area, the upper frame area comprises at least one pyroelectric sensing area, and the pyroelectric sensing area is provided with:
a flexible substrate;
a thin film encapsulation layer on the flexible substrate;
the pyroelectric sensor is positioned on one side, far away from the flexible substrate, of the film packaging layer and is used for generating electric signals with different intensities after receiving infrared radiation with different intensities.
Fig. 1 is a top view of a flexible display panel according to an embodiment of the present invention, and fig. 2 is a schematic cross-sectional view of the flexible display panel according to the embodiment of the present invention, taken along a cutting line AA' in fig. 1. Referring to fig. 1 and 2, a flexible display panel according to an embodiment of the present invention includes a display region 1 and a bezel region 2 surrounding the display region 1, where the bezel region 2 includes an upper bezel region, a lower bezel region, and a side bezel region connecting the upper bezel region and the lower bezel region, which are oppositely disposed, and the upper bezel region includes at least one pyroelectric sensing region 3.
The pyroelectric sensing region 3 is provided with a flexible substrate 6, and the flexible substrate 6 is an insulating material having flexibility, for example, a polymer material such as Polyimide (PI), Polycarbonate (PC), polyether sulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), Polyarylate (PAR), or glass Fiber Reinforced Plastic (FRP). The flexible substrate 6 may be transparent, translucent or opaque.
The pyroelectric sensing area 3 is further provided with a thin film encapsulation layer 7 on the flexible substrate 6. The film packaging layer 7 can isolate water and oxygen and prevent the film layer covered by the film packaging layer from being corroded by water and oxygen. The thin film encapsulation layer 7 includes an inorganic layer and an organic layer which are sequentially stacked.
The pyroelectric sensing area 3 is further provided with a pyroelectric sensor which is positioned on one side of the film packaging layer 7, which is far away from the flexible substrate 6, and the pyroelectric sensor is used for generating electric signals with different intensities after receiving infrared radiation with different intensities.
Optionally, the pyroelectric sensor comprises:
the first induction electrode layer is positioned on one side, far away from the flexible substrate, of the thin film packaging layer and comprises at least one first induction electrode;
the pyroelectric film is positioned on one side, away from the flexible substrate, of the first sensing electrode layer and is used for releasing electric charges when the temperature is changed due to infrared radiation;
the second sensing electrode layer is positioned on one side, far away from the flexible substrate, of the pyroelectric film and comprises at least one second sensing electrode;
the at least one first sensing electrode corresponds to the at least one second sensing electrode one to one, and the orthographic projection of each first sensing electrode on the flexible substrate is overlapped with the orthographic projection of the corresponding second sensing electrode on the flexible substrate.
Fig. 5 is a response diagram of the pyroelectric sensor provided by the embodiment of the invention under two touches. Assuming that the finger temperature is 35.5 ℃ and the pyroelectric sensor temperature is 24 ℃ under the condition of no infrared radiation, when the finger is close to the pyroelectric sensor, the temperature sensed by the pyroelectric sensor reaches 28.7 ℃. Fig. 5 shows a response curve of a finger twice approaching the pyroelectric sensor. When the finger is not close to the pyroelectric sensor, the voltage output of the pyroelectric sensor is almost zero, and when the finger is close to the pyroelectric sensor, the voltage output of the pyroelectric sensor reaches more than 0.00020V.
The pyroelectric sensor provided by the embodiment of the invention can capture weak temperature change through the pyroelectric film. When a finger or a human ear is close to the screen of the mobile phone, the pyroelectric sensor can detect the change of temperature, generate an electric signal and feed back the electric signal to a control chip of the mobile phone. Under the control of the control chip of the mobile phone, the backlight lamp is turned off, so that the electric energy loss of the battery is saved, and the standby time of the mobile phone is prolonged.
In addition, in the related art, an infrared distance sensor is usually used to detect whether a finger or a human ear is close to the mobile phone screen, so that an opening needs to be formed above the mobile phone screen. However, the open design may result in a handset that does not achieve a truly full screen.
Referring to fig. 2, the pyroelectric sensor provided by the embodiment of the invention includes a first sensing electrode layer 8 located on a side of the thin film encapsulation layer 7 away from the flexible substrate 6, a pyroelectric film 9 located on a side of the first sensing electrode layer 8 away from the flexible substrate 6, and a second sensing electrode layer 10 located on a side of the pyroelectric film 9 away from the flexible substrate 6.
Wherein, the first sensing electrode layer 8 comprises at least one first sensing electrode, and the second sensing electrode layer 10 comprises at least one second sensing electrode.
The at least one first sensing electrode corresponds to the at least one second sensing electrode one to one, and an orthographic projection of each first sensing electrode on the flexible substrate 6 is overlapped with an orthographic projection of the corresponding second sensing electrode on the flexible substrate 6.
Referring to fig. 1, fig. 1 shows a pyroelectric sensing region 3, and only one first sensing electrode and one second sensing electrode are disposed on the pyroelectric sensing region 3, and an orthographic projection of the first sensing electrode on a flexible substrate 6 overlaps with an orthographic projection of the second sensing electrode on the flexible substrate 6.
It should be noted that, according to the requirements of the application scenario, a plurality of pyroelectric sensing areas may be provided, and a plurality of pairs of sensing electrodes may be provided in each pyroelectric sensing area. The larger the pyroelectric sensing area, the more timely the response to temperature changes.
Furthermore, the at least one first sensing electrode and the at least one second sensing electrode can also be arranged in a crossed manner, so that not only can temperature sensing be realized, but also position detection can be realized.
Optionally, the display area is provided with:
the flexible substrate;
a thin film transistor array layer on the flexible substrate;
the OLED device layer is positioned on one side, away from the flexible substrate, of the thin film transistor array layer and comprises a plurality of light emitting units, and each light emitting unit comprises an anode, a cathode and an organic light emitting layer positioned between the anode and the cathode;
the thin film packaging layer is positioned on one side, far away from the flexible substrate, of the OLED device layer;
the first touch electrode layer is positioned on one side, far away from the flexible substrate, of the thin film packaging layer and comprises at least one first touch electrode;
the insulating layer is positioned on one side, away from the flexible substrate, of the first touch electrode layer;
the second touch electrode layer is positioned on one side, away from the flexible substrate, of the insulating layer and comprises at least one second touch electrode;
the at least one first touch electrode and the at least one second touch electrode are arranged in a crossed manner.
The film layer structure of the display area enables the display panel to have the characteristics of good flexibility, light and thin volume, low power consumption and rubbing resistance.
In addition, the organic light-emitting layer is generally made of solid materials, the anti-seismic performance is good, the visual angle of the flexible display panel is larger due to the organic light-emitting materials, the light-emitting efficiency of the organic light-emitting materials is higher, and the energy consumption is lower.
In addition, the touch electrode layer realizes effective touch, and can detect the touch position of a finger in real time.
Referring to fig. 3, fig. 3 is a schematic diagram of a film structure of a flexible display panel in a display area according to an embodiment of the present invention.
The display area 1 is provided with the flexible substrate 6.
The display area 1 is further provided with a thin film transistor array layer 15 on the flexible substrate 6. The thin film transistor array layer comprises a plurality of thin film transistors, and each thin film transistor comprises a semiconductor active layer, a gate electrode, a source electrode and a drain electrode. The semiconductor active layer includes a source region and a drain region formed by doping N-type impurity ions or P-type impurity ions. A region between the source region and the drain region is a channel region in which impurities are not doped.
The display area 1 is further provided with an OLED device layer 16 on the side of the thin film transistor array layer 15 remote from the flexible substrate 6. The OLED device layer 16 includes a plurality of light emitting cells including an anode, a cathode, and an organic light emitting layer between the anode and the cathode. The anode is electrically connected to the drain of the thin film transistor. The organic light emitting layer includes a low molecular weight organic material or a high molecular weight organic material. In addition to this, the organic light emitting layer may further include at least one of a Hole Injection Layer (HIL), a Hole Transport Layer (HTL), an Electron Transport Layer (ETL), and an Electron Injection Layer (EIL).
The display area 1 is further provided with the thin film encapsulation layer 7 on the side of the OLED device layer 16 remote from the flexible substrate 6.
The display area 1 is further provided with a first touch electrode layer 17 located on one side of the thin film encapsulation layer 7, which is far away from the flexible substrate 6, and the first touch electrode layer 17 comprises at least one first touch electrode. The first touch electrode layer 17 is a metal mesh, and the metal may be silver or copper.
The display area 1 is further provided with an insulating layer 18 located on one side of the first touch electrode layer 17 away from the flexible substrate 6.
The display area 1 is further provided with a second touch electrode layer 19 located on one side of the insulating layer 18 far away from the flexible substrate 6, and the second touch electrode layer 19 includes at least one second touch electrode. The first touch electrode layer 19 is a metal grid, and the metal may be silver or copper.
The at least one first touch electrode and the at least one second touch electrode are arranged in a crossed manner.
Optionally, the first sensing electrode layer and the first touch electrode layer are made of the same material on the same layer; and
the second induction electrode layer and the second touch electrode layer are made of the same material on the same layer.
Referring to fig. 2 and 3, the first sensing electrode layer 8 and the first touch electrode layer 17 are made of the same material in the same layer; and
the second sensing electrode layer 10 and the second touch electrode layer 19 are made of the same material in the same layer.
According to the flexible display panel provided by the embodiment of the invention, due to the integrated design of the induction electrode layer of the pyroelectric sensor and the touch electrode layer of the flexible display panel, an opening is not required to be formed in a mobile phone screen, so that a full-screen display is realized.
Optionally, the flexible display panel further includes:
the flexible circuit board is arranged in the lower frame area, and a control circuit of the pyroelectric sensor is arranged on the flexible circuit board.
The pyroelectric sensor provided by the embodiment of the invention can detect the change of temperature, generate an electric signal and transmit the electric signal to the control circuit, and the control circuit converts the voltage signal into a data signal and performs digital algorithm processing on the digital signal. In addition, the control circuit is connected with a control chip of the mobile phone. Under the control of the control chip of the mobile phone, the backlight lamp is turned off, so that the electric energy loss of the battery is saved, and the standby time of the mobile phone is prolonged.
Referring to fig. 1, the flexible display panel provided in the embodiment of the present invention further includes a flexible circuit board 5 disposed in the lower frame region, and the flexible circuit board 4 is provided with a control circuit 5 of the pyroelectric sensor.
Optionally, the flexible display panel further includes: the pyroelectric sensor comprises at least one first sensing electrode lead, wherein one end of the first sensing electrode lead is connected with the first sensing electrode, the other end of the first sensing electrode lead is connected with a control circuit of the pyroelectric sensor, and the first sensing electrode lead comprises a first part located in an upper frame area, a second part connected with the first part and located in a side frame area, and a third part connected with the second part and located in a lower frame area.
One end of the second sensing electrode lead is connected with the second sensing electrode, the other end of the second sensing electrode lead is connected with a control circuit of the pyroelectric sensor, and the second sensing electrode lead comprises a fourth part located in the upper frame area, a fifth part connected with the fourth part and located in the side frame area, and a sixth part connected with the fifth part and located in the lower frame area.
The induction electrode lead can transmit the electric signal generated by the pyroelectric sensor to the control circuit, so that subsequent electric signal processing is facilitated.
Referring to fig. 1, fig. 1 shows a first sensing electrode lead and a second sensing electrode lead. The first sensing electrode lead and the second sensing electrode lead are both in a side wiring mode.
Optionally, the material of the pyroelectric film comprises at least one of the following: polyvinylidene fluoride, polyvinyl fluoride.
Polyvinylidene fluoride (PVDF), which is mainly a vinylidene fluoride homopolymer or a copolymer of vinylidene fluoride and other small amount of fluorine-containing vinyl monomers, has the characteristics of both fluororesin and general-purpose resin, and has special properties such as piezoelectric property, dielectric property, thermoelectric property and the like in addition to good chemical corrosion resistance, high temperature resistance, oxidation resistance, weather resistance and radiation resistance.
As an example, the pyroelectric film of the embodiment of the present invention uses PVDF, and is disposed on the first sensing electrode layer 8 in a coating manner, and needs to be subjected to baking and polarization treatment.
Optionally, the pyroelectric sensing region is further provided with: and the protective layer is positioned on one side of the second sensing electrode layer, which is far away from the flexible substrate.
Referring to fig. 2, the pyroelectric sensing region 3 is further provided with: and the protective layer 11 is positioned on one side of the second sensing electrode layer 10 far away from the flexible substrate 6. The protective layer has elasticity and is used for preventing the pyroelectric sensor from generating elastic deformation under the action of external force.
Referring to fig. 3, the display area may also be provided with a protection layer 11 located on a side of the second touch electrode layer 19 away from the flexible substrate 6.
Optionally, the flexible display panel further includes:
the polaroids are positioned in the display area and the peripheral area and are positioned on one side, far away from the flexible substrate, of the protective layer;
the cover plate glass is positioned on one side of the polaroid, which is far away from the flexible substrate;
and the optical transparent adhesive is positioned between the polaroid and the cover plate glass and is used for adhering the polaroid and the cover plate glass.
The polaroid can prevent ambient light from reflecting away from the cell-phone screen, and then can improve and show contrast.
The cover plate glass can protect each film layer structure in the mobile phone from being damaged and plays a role in decorating appearance.
The optical transparent adhesive can prevent the polarizer from being separated from the cover plate glass.
Fig. 4 is a schematic diagram of a film structure of a flexible display panel in a peripheral area according to an embodiment of the present invention, and referring to fig. 4, in fig. 4, a polarizer 12, an optically transparent adhesive 13, and a cover glass 14 are added on the basis of fig. 2.
The embodiment of the invention also provides a flexible display device which comprises the flexible display substrate.
Therefore, when the flexible display device provided by the embodiment of the invention comprises the flexible display panel, the beneficial effects are also achieved, and the details are not repeated herein.
The flexible display device includes but is not limited to: radio frequency unit, network module, audio output unit, input unit, sensor, display unit, user input unit, interface unit, memory, processor, and power supply. It will be appreciated by those skilled in the art that the above described configuration of the display device does not constitute a limitation of the display device, and that the display device may comprise more or less of the components described above, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the display device includes, but is not limited to, a display, a mobile phone, a tablet computer, a television, a wearable electronic device, a navigation display device, and the like.
The flexible display device may be: any product or component with a display function, such as a television, a display, a digital photo frame, a mobile phone, a tablet computer and the like.
The embodiment of the present invention further provides a method for manufacturing a flexible display panel, where the flexible display panel includes: the display device comprises a display area and a frame area surrounding the display area, wherein the frame area comprises an upper frame area, a lower frame area and a side frame area, the upper frame area and the lower frame area are oppositely arranged, the side frame area is connected with the upper frame area and the lower frame area, the upper frame area comprises at least one pyroelectric sensing area, and the manufacturing method comprises the following steps of:
arranging a flexible substrate in the pyroelectric sensing area;
forming a thin film encapsulation layer on the flexible substrate;
and forming a pyroelectric sensor positioned on one side of the film packaging layer, which is far away from the flexible substrate, wherein the pyroelectric sensor is used for generating electric signals with different intensities after receiving infrared radiation with different intensities.
Referring to fig. 6, fig. 6 is a flowchart of a method for manufacturing a flexible display panel according to an embodiment of the present invention.
The manufacturing method comprises the following steps:
s602: and arranging a flexible substrate in the pyroelectric sensing area.
S604: and forming a thin film packaging layer on the flexible substrate.
S606: and forming a pyroelectric sensor positioned on one side of the film packaging layer, which is far away from the flexible substrate, wherein the pyroelectric sensor is used for generating electric signals with different intensities after receiving infrared radiation with different intensities.
In the embodiments of the methods of the present invention, the sequence numbers of the steps are not used to limit the sequence of the steps, and for those skilled in the art, the sequence of the steps is not changed without creative efforts.
It should be noted that, in the present specification, all the embodiments are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the embodiments, since they are substantially similar to the product embodiments, the description is simple, and the relevant points can be referred to the partial description of the product embodiments.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "under" another element, it can be "directly on" or "under" the other element or intervening elements may be present.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure, and all the changes or substitutions should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (11)
1. A flexible display panel comprising: the display device comprises a display area and a frame area surrounding the display area, wherein the frame area comprises an upper frame area, a lower frame area and a side frame area, the upper frame area and the lower frame area are oppositely arranged, the side frame area is connected with the upper frame area and the lower frame area, the display device is characterized in that the upper frame area comprises at least one pyroelectric sensing area, and the pyroelectric sensing area is provided with:
a flexible substrate;
a thin film encapsulation layer on the flexible substrate;
the pyroelectric sensor is positioned on one side, far away from the flexible substrate, of the film packaging layer and is used for generating electric signals with different intensities after receiving infrared radiation with different intensities.
2. The flexible display panel of claim 1, wherein the pyroelectric sensor comprises:
the first induction electrode layer is positioned on one side, far away from the flexible substrate, of the thin film packaging layer and comprises at least one first induction electrode;
the pyroelectric film is positioned on one side, away from the flexible substrate, of the first sensing electrode layer and is used for releasing electric charges when the temperature is changed due to infrared radiation;
the second sensing electrode layer is positioned on one side, far away from the flexible substrate, of the pyroelectric film and comprises at least one second sensing electrode;
the at least one first sensing electrode corresponds to the at least one second sensing electrode one to one, and the orthographic projection of each first sensing electrode on the flexible substrate is overlapped with the orthographic projection of the corresponding second sensing electrode on the flexible substrate.
3. The flexible display panel according to claim 2, wherein the display area is provided with:
the flexible substrate;
a thin film transistor array layer on the flexible substrate;
the OLED device layer is positioned on one side, away from the flexible substrate, of the thin film transistor array layer and comprises a plurality of light emitting units, and each light emitting unit comprises an anode, a cathode and an organic light emitting layer positioned between the anode and the cathode;
the thin film packaging layer is positioned on one side, far away from the flexible substrate, of the OLED device layer;
the first touch electrode layer is positioned on one side, far away from the flexible substrate, of the thin film packaging layer and comprises at least one first touch electrode;
the insulating layer is positioned on one side, away from the flexible substrate, of the first touch electrode layer;
the second touch electrode layer is positioned on one side, away from the flexible substrate, of the insulating layer and comprises at least one second touch electrode;
the at least one first touch electrode and the at least one second touch electrode are arranged in a crossed manner.
4. The flexible display panel of claim 3, wherein the first sensing electrode layer and the first touch electrode layer are made of the same material in the same layer; and
the second induction electrode layer and the second touch electrode layer are made of the same material on the same layer.
5. The flexible display panel of claim 2, further comprising:
the flexible circuit board is arranged in the lower frame area, and a control circuit of the pyroelectric sensor is arranged on the flexible circuit board.
6. The flexible display panel of claim 5, further comprising:
the pyroelectric sensor comprises at least one first sensing electrode lead, at least one second sensing electrode lead and at least one second sensing electrode lead, wherein one end of the first sensing electrode lead is connected with the first sensing electrode, the other end of the first sensing electrode lead is connected with a control circuit of the pyroelectric sensor, and the first sensing electrode lead comprises a first part positioned in an upper frame area, a second part connected with the first part and positioned in a side frame area, and a third part connected with the second part and positioned in a lower frame area;
one end of the second sensing electrode lead is connected with the second sensing electrode, the other end of the second sensing electrode lead is connected with a control circuit of the pyroelectric sensor, and the second sensing electrode lead comprises a fourth part located in the upper frame area, a fifth part connected with the fourth part and located in the side frame area, and a sixth part connected with the fifth part and located in the lower frame area.
7. The flexible display panel of claim 2, wherein the material of the pyroelectric film comprises at least one of:
polyvinylidene fluoride, polyvinyl fluoride.
8. The flexible display panel of claim 1, wherein the pyroelectric sensing region is further provided with: and the protective layer is positioned on one side of the second sensing electrode layer, which is far away from the flexible substrate.
9. The flexible display panel of claim 8, further comprising:
the polaroids are positioned in the display area and the peripheral area and are positioned on one side, far away from the flexible substrate, of the protective layer;
the cover plate glass is positioned on one side of the polaroid, which is far away from the flexible substrate;
and the optical transparent adhesive is positioned between the polaroid and the cover plate glass and is used for adhering the polaroid and the cover plate glass.
10. A flexible display device comprising a flexible display panel according to any one of claims 1-9.
11. A method of making a flexible display panel, the flexible display panel comprising: the display device comprises a display area and a frame area surrounding the display area, wherein the frame area comprises an upper frame area, a lower frame area and a side frame area, the upper frame area and the lower frame area are oppositely arranged, the side frame area is connected with the upper frame area and the lower frame area, the upper frame area comprises at least one pyroelectric sensing area, and the manufacturing method is characterized by comprising the following steps of:
arranging a flexible substrate in the pyroelectric sensing area;
forming a thin film encapsulation layer on the flexible substrate;
and forming a pyroelectric sensor positioned on one side of the film packaging layer, which is far away from the flexible substrate, wherein the pyroelectric sensor is used for generating electric signals with different intensities after receiving infrared radiation with different intensities.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111360154.8A CN114068664A (en) | 2021-11-17 | 2021-11-17 | Flexible display panel, manufacturing method thereof and flexible display device |
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| CN202111360154.8A CN114068664A (en) | 2021-11-17 | 2021-11-17 | Flexible display panel, manufacturing method thereof and flexible display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115581087A (en) * | 2022-09-23 | 2023-01-06 | 京东方科技集团股份有限公司 | Display device, display panel and manufacturing method thereof |
| WO2023159448A1 (en) * | 2022-02-24 | 2023-08-31 | 京东方科技集团股份有限公司 | Display module and display apparatus |
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2021
- 2021-11-17 CN CN202111360154.8A patent/CN114068664A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023159448A1 (en) * | 2022-02-24 | 2023-08-31 | 京东方科技集团股份有限公司 | Display module and display apparatus |
| CN115581087A (en) * | 2022-09-23 | 2023-01-06 | 京东方科技集团股份有限公司 | Display device, display panel and manufacturing method thereof |
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