WO2019222919A1 - Flexible electronic device and bending position determining method thereof - Google Patents

Abstract

Disclosed in the present application is a flexible electronic device, comprising a flexible substrate, a flexible display component, a piezoelectric sensing component, and a processor. The flexible display component is stacked on the flexible substrate; recess parts are formed on at least two adjacent side walls of the flexible display component along a peripheral direction of the flexible display component; the piezoelectric sensing component comprises at least two piezoelectric sensing units, which are provided in the recess parts, and each side wall corresponds to at least one piezoelectric sensing unit; when the flexible electronic device is bent, the corresponding piezoelectric sensing unit generates a corresponding bending position identifying signal, and the processor determines the bending position according to the bending position identifying signal, and adjusts displaying of content on the flexible display component according to the bending position. Also disclosed in the present application is a bending position determining method. According to the present application, a bending position at any position of the flexible electronic device can be obtained in real time by means of the piezoelectric sensing component, and the processor thus can adjust displaying of content on the flexible electronic device according to the bending position.

Description

Flexible electronic device and method for determining bending position thereof Technical field

The present application relates to the field of flexible display technology, and in particular, to a flexible electronic device and a method for determining a bending position thereof.

Background technique

Currently, most flexible displays on the market are flexible displays with fixed curved surfaces, rather than flexible displays that can be bent at any position. When developing a flexible display that can be bent at any position, it is necessary to obtain its bending position in order to display the corresponding content and turn on and off the touch. Therefore, the determination of the bending position is very important, otherwise mishaps will occur. However, the prior art cannot determine the bending position of any bending of the flexible display for corresponding content display.

Summary of the Invention

The embodiment of the present application discloses a flexible electronic device and a method for determining a bending position thereof, so as to solve the foregoing problems.

An embodiment of the present application discloses a flexible electronic device including a flexible substrate, a flexible display component, a piezoelectric sensing component, and a processor. The flexible display component is stacked on the flexible substrate. Two adjacent side walls are provided with a recessed portion along the peripheral direction of the flexible display component. The piezoelectric sensing component includes at least two piezoelectric sensing units, and the at least two piezoelectric sensing units are disposed at Inside the recessed portion, and each of the side walls corresponds to at least one of the piezoelectric sensing units, and when the flexible electronic device is bent, the piezoelectric sensing unit corresponding to a bending position of the flexible electronic device is generated The corresponding bending position identification signal, the processor determines a bending position according to the bending position identification signal, and adjusts the content display of the flexible display component according to the bending position.

The embodiment of the present application discloses a method for determining a bending position, and the method for determining a bending position is applied to the flexible electronic device. The bending position determining method includes the steps of: when the flexible electronic device is bent, the piezoelectric sensing unit corresponding to the bending position of the flexible electronic device generates a corresponding bending position identification signal; according to the bending The folding position identification signal determines a folding position; and adjusts the content display of the flexible electronic device according to the folding position.

The flexible electronic device and the bending position determining method of the present application can determine the bending position of the flexible electronic device at an arbitrary position through the piezoelectric sensing component, so that the flexible electronic device can adjust the display according to the bending position. Content with a better user experience.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solutions in the embodiments of the present application more clearly, the drawings used in the embodiments are briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. Those of ordinary skill in the art can obtain other drawings according to these drawings without paying creative labor.

FIG. 1 is a schematic cross-sectional structure diagram of a flexible electronic device in a first embodiment of the present application.

FIG. 2 is a schematic structural diagram of a flexible electronic device according to an embodiment of the present application.

FIG. 3 is a schematic cross-sectional structure diagram of a flexible electronic device in a second embodiment of the present application.

FIG. 4 is a schematic cross-sectional structure diagram of a flexible electronic device in a third embodiment of the present application.

FIG. 5 is a schematic cross-sectional structure diagram of a flexible electronic device in a fourth embodiment of the present application.

6a and 6b are equivalent circuit diagrams of a piezoelectric induction unit in an embodiment of the present application.

FIG. 7 is a schematic structural diagram of the flexible electronic device 1 after removing all the laminated structures on the anode layer in an embodiment of the present application.

FIG. 8 is a schematic diagram of a bending position of a flexible display component according to an embodiment of the present application.

FIG. 9 is a schematic cross-sectional structure of a solder joint in an embodiment of the present application.

FIG. 10 is a schematic flowchart of a method for determining a bending position of a flexible electronic device according to an embodiment of the present application.

Explanation of main component symbols

Flexible electronic device	1
Flexible substrate	10
Flexible display components	30
Piezo Inductive Components	50

processor	70
Side wall	301
Recess	302
Piezo Induction Unit	51
Display area	X1
Non-display area	F1
Anode layer	31
Luminescent layer	32
Cathode layer	33
Hole transport layer	34
Electron transport layer	35
Flexible display components	30a, 30b, 30c
Thin film transistor array	36
First inorganic layer	37
Organic layer	38
Second inorganic layer	39
Anode unit	311
Pad area	80
Solder joint	81
Bend position	H1, H2, H3, V1, V2, V3
Insulation	811
Metal conductive layer	812
The protective layer	813
Protective layer opening	8131
Flattening layer	814
Planar opening	8141
Overlap layer	815

The following specific embodiments will further explain the present application in combination with the above drawings.

Detailed ways

In the following, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

Please refer to FIG. 1 and FIG. 2 together. FIG. 1 is a schematic cross-sectional structure diagram of a flexible electronic device 1 according to a first embodiment of the present application. FIG. 2 is a schematic structural diagram of a flexible electronic device according to an embodiment of the present application. The flexible electronic device 1 includes a flexible substrate 10, a flexible display component 30, a piezoelectric sensing component 50, and a processor 70. The flexible display component 30 is stacked on the flexible substrate 10. The flexible substrate 10 is used to provide support for the flexible display assembly 30. The flexible display component 30 is used to provide content display. A recessed portion 302 is defined in at least two adjacent sidewalls 301 of the flexible display component 30 along a circumferential direction of the flexible display component 30. The piezoelectric sensing component 50 includes at least two piezoelectric sensing units 51. The at least two piezoelectric sensing units 51 are disposed in the recessed portion 302, and each of the side walls 301 is correspondingly provided with at least one of the piezoelectric sensing units 51. When the flexible electronic device 1 is bent, the piezoelectric sensing unit 51 corresponding to the bending position of the flexible electronic device 1 generates a corresponding bending position identification signal. The processor 70 determines a bending position according to the bending position identification signal, and adjusts the content display of the flexible display component 30 according to the bending position.

Therefore, the processor 70 can determine the bending position on the flexible electronic device 1 through the bending position identification signal generated by the piezoelectric sensing component 50, and can adjust the flexible display component according to the bending position. 30 content shows that has a better user experience.

Specifically, the flexible substrate 10 may be, but is not limited to, a polymer plastic substrate, a metal foil substrate, an ultra-thin glass substrate, a paper substrate, and the like. The polymer plastic substrate may be made of, but not limited to, polyethylene (PE), polypropylene (PP), polystyrene (PS), polyethylene terephthalate (PET), and polysulfone ether ( PES), polyethylene terephthalate (PEN), polyimide (PI) and other materials.

Please refer to FIG. 2 again, the flexible display component 30 has a display area X1 and a non-display area F1 provided around a periphery of the display area X1. The display area X1 is used to provide content display. The recessed portion 302 is located in the non-display area F1. Therefore, the arrangement of the at least two piezoelectric sensing units 51 does not affect the content display of the display area X1 of the flexible display component 30.

Specifically, the extending direction of the recessed portion 302 may be parallel to the surface of the flexible display component 30, or may be in a non-parallel wave shape.

Specifically, the flexible display component 30 includes an anode layer 31, a light emitting layer 32, and a cathode layer 33. The anode layer 31 is stacked on the flexible substrate 10. The light emitting layer 32 is stacked on the anode layer 31. The cathode layer 33 is stacked on the light emitting layer 32. The anode layer 31 is generally made of a conductive material having a high work function and good light transmittance. For example, the anode layer 31 is a metal conductive film made of indium tin oxide (ITO). The light emitting layer 32 is generally prepared by using a fluorescent dopant doped in a fluorescent host material. The cathode layer 33 is generally made of an organic metal with a low work function. For example, the cathode layer 33 is an organic thin film metal electrode prepared by an evaporation method. When a positive DC voltage of 2 to 10 V is applied to the anode layer 31 and the cathode layer 33 is grounded, the holes generated by the anode layer 31 and the electrons generated by the cathode layer 33 move to each other, and The light emitting layers 32 meet. When holes and electrons meet in the light-emitting layer 32, energy excitons are generated, thereby exciting light-emitting molecules to finally generate visible light.

The recessed portion 302 may be provided in a stack formed by any one of the anode layer 31, the light-emitting layer 32, and the cathode layer 33, any two adjacent layers, or three adjacent layers. A structure corresponding to the non-display area F1. Referring to FIG. 1, in this embodiment, the recessed portion 302 is disposed in a region of the anode layer 31 corresponding to the non-display region F1. The at least two piezoelectric sensing units 51 are sequentially disposed in the recessed portion 302. Therefore, when the flexible electronic device 1 is bent, the piezoelectric sensing unit 51 corresponding to the bending position of the flexible electronic device 1 can sense the bending behavior of the flexible electronic device 1 and generate a corresponding response. Identification signal of the bending position. The processor 70 can determine a bending position according to the bending position identification signal.

Please refer to FIG. 3 together, which is a schematic cross-sectional structure diagram of the flexible electronic device 1 in the second embodiment of the present application. The flexible display component 30 a shown in FIG. 3 is similar to the flexible display component 30 shown in FIG. 1, except that the flexible display component 30 a further includes a hole transport layer 34 and an electron transport layer 35. The hole transport layer 34 is disposed between the anode layer 31 and the light emitting layer 32. The electron transport layer 35 is disposed between the light emitting layer 32 and the cathode layer 33. The hole-transporting layer 34 is generally made of a class of aromatic amine compounds, which has good thermal stability and can help the holes generated by the anode layer 31 move to the light-emitting layer 32. The electron transport layer 35 is generally made of a fluorescent dye compound, which has good thermal stability and surface stability, and can help the electrons released by the cathode layer 33 to be smoothly transferred to the light emitting layer 32. Therefore, the light emitting efficiency of the flexible display component 30a can be improved, and the holes and electrons in the light emitting layer 32 caused by the mobility of holes in the anode layer 31 and the mobility of electrons in the cathode layer 33 can be avoided. The imbalance of the implantation further reduces the luminous efficiency.

The recessed portion 302 may be provided in any one of the anode layer 31, the hole transport layer 34, the light emitting layer 32, the electron transport layer 35, and the cathode layer 33. An area corresponding to the non-display area F1 in a layered structure formed by two adjacent layers, any three adjacent layers, any four adjacent layers, or five adjacent layers. Please refer to FIG. 3 again. In this embodiment, the recessed portion 302 is disposed in a region of the anode layer 31 corresponding to the non-display region F1. The at least two piezoelectric sensing units 51 are sequentially disposed in the recessed portion 302. Therefore, when the flexible electronic device 1 is bent, the piezoelectric sensing unit 51 corresponding to the bending position of the flexible electronic device 1 can sense the bending behavior of the flexible electronic device 1 and generate a corresponding response. Identification signal of the bending position. The processor 70 can determine a bending position according to the bending position identification signal.

Please refer to FIG. 4 together, which is a schematic cross-sectional structure diagram of the flexible electronic device 1 in the third embodiment of the present application. The flexible display component 30b shown in FIG. 4 is similar to the flexible display component 30a shown in FIG. 3, except that in this embodiment, the flexible display component 30 adopts an active driving method, that is, the flexible display component 30b further includes a thin film transistor array 36, which is disposed between the flexible substrate 10 and the anode layer 31. Each thin film transistor in the thin film transistor array 36 corresponds to one of the light emitting layers 32. When the corresponding pixel in the light-emitting layer 32 needs to be lit, the thin-film transistor corresponding to the pixel in the thin-film transistor array 36 is turned on to drive the pixel and cause it to emit light continuously. Compared with the passive driving method, the above active driving method does not require scanning, the power supply current is constant, high peak current is not required, and power consumption is lower.

The recessed portion 302 may be provided in any one of the thin film transistor array 36, the anode layer 31, the hole transport layer 34, the light emitting layer 32, the electron transport layer 35, and the cathode layer 33, and any two adjacent layers , An area corresponding to the non-display area F1 in a layered structure formed by any three adjacent layers, any four adjacent layers, any five adjacent layers, or six adjacent layers. Please refer to FIG. 4 again. In this embodiment, the recessed portion 302 is disposed in a region of the anode layer 31 corresponding to the non-display region F1. The at least two piezoelectric sensing units 51 are sequentially disposed in the recessed portion 302. Therefore, when the flexible electronic device 1 is bent, the piezoelectric sensing unit 51 corresponding to the bending position of the flexible electronic device 1 can sense the bending behavior of the flexible electronic device 1 and generate a corresponding response. Identification signal of the bending position. The processor 70 can thereby determine a bending position according to the bending position identification signal.

Please refer to FIG. 5 together, which is a schematic cross-sectional structure diagram of the flexible electronic device 1 in the fourth embodiment of the present application. The flexible display component 30c shown in FIG. 5 is similar to the flexible display component 30b shown in FIG. 4, except that in this embodiment, the flexible display component 30c further includes a first inorganic layer 37, an organic layer 38, and a second Inorganic layer 39. The first inorganic layer 37 is stacked on a side of the cathode layer 33 facing away from the anode layer 31. The organic layer 38 is stacked on a side of the first inorganic layer 37 facing away from the anode layer 31. The second inorganic layer 39 is disposed on a side of the organic layer 38 facing away from the anode layer 31. The first inorganic layer 37, the organic layer 38, and the second inorganic layer 39 collectively constitute an encapsulation layer. The first inorganic layer 37, the organic layer 38, and the second inorganic layer 39 provide protection for the flexible display component 30c.

The recessed portion 302 is disposed on the thin film transistor array 36, the anode layer 31, the hole transport layer 34, the light emitting layer 32, the electron transport layer 35, the cathode layer 33, the first inorganic layer 37, the organic layer 38, and the first layer. Any one of the two inorganic layers 39, any two adjacent layers, any three adjacent layers, any four adjacent layers, any five adjacent layers, any six adjacent layers, and any seven adjacent layers In an area corresponding to the non-display area F1 in a layered structure formed by any adjacent eight or nine layers. In this embodiment, the recessed portion 302 is disposed in a region of the anode layer 31 corresponding to the non-display region F1. The at least two piezoelectric sensing units 51 are sequentially disposed in the recessed portion 302, so that when the flexible electronic device 1 is bent, the pressure corresponding to the bending position of the flexible electronic device 1 is The electrical sensing unit 51 can sense the bending behavior of the flexible electronic device 1 and generate a corresponding bending position identification signal. The processor 70 can thereby determine a bending position according to the bending position identification signal.

It can be understood that, in other embodiments, the recessed portion 302 may also be disposed in a region corresponding to the non-display region F1 among other layers included in the flexible display component 30, for example, a hole injection layer, an electron Injection layer, etc.

Specifically, please refer to FIG. 6 a and FIG. 6 b together, where FIG. 6 a and FIG. 6 b are equivalent circuit diagrams of the piezoelectric induction unit 51. The piezoelectric sensing unit 51 is a piezoelectric sensor. When the piezoelectric sensing unit 51 is compressed / stretched, the piezoelectric material generates a piezoelectric effect. The two polar surfaces of the piezoelectric sensing unit 51 have opposite polarities but the same amount of electricity. Charge. The capacitance Ca of the piezoelectric induction unit 51 is: Ca = εS / d, where ε is a piezoelectric constant, S is a force area, and d is a distance between two electrode plates of the piezoelectric induction unit 51. When the two opposite electrode plates of the piezoelectric induction unit 51 accumulate opposite charges, the two electrode plates exhibit a certain voltage Ua, the size of which is Ua = q / Ca, where q is the amount of charge and Ca is the capacitance. That is, the piezoelectric sensing unit 51 generates a voltage when it is bent, and therefore, the voltage of the flexible display assembly 30 can be determined according to whether the piezoelectric sensing unit 51 at a corresponding position of the flexible display assembly 30 generates a voltage. Whether the position is bent. Specifically, the piezoelectric induction unit 51 generates a voltage when it is bent, and the processor 70 determines the flexible display assembly 30 when a voltage is generated by the piezoelectric induction unit 51 at a position corresponding to the flexible display assembly 30. This position is bent; the piezoelectric sensing unit 51 does not generate a voltage when there is no bending, and the processor 70 generates no voltage when the piezoelectric sensing unit 51 at a corresponding position of the flexible display component 30 does not generate a voltage. It is determined that the position of the flexible display assembly 30 is not bent.

Further specifically, each piezoelectric sensing unit 51 is set corresponding to a bending position, and the bending position is stored, and specifically stored in the form of a correspondence table between the piezoelectric sensing unit and the bending position. When the piezoelectric sensing unit 51 generates a voltage, the processor 70 determines that the bending position corresponding to the piezoelectric sensing unit 51 is bent according to a correspondence table between the piezoelectric sensing unit and the bending position.

Please refer to FIG. 7 together. FIG. 7 is a schematic structural diagram of the flexible electronic device 1 after removing all the laminated structures on the anode layer 31 in an embodiment of the present application. In the flexible electronic device 1 shown in FIG. 7, the anode layer 31 includes at least two anode units 311 and is arranged in an array. The recessed portion 302 is disposed only at two adjacent sides of the flexible display component 30 corresponding to the non-display area F1. It can be understood that, in other embodiments, the recessed portion 302 may also be disposed at positions of four sides of the flexible display component 30 corresponding to the non-display area F1. Since the piezoelectric display units 51 are correspondingly provided on all edges of the flexible display component 30, when any two piezoelectric display units 51 of the flexible display component 30 generate a voltage, the flexibility can be determined. The bending position of the display unit 30 is a bending line. The processor 70 adjusts the content display of the flexible display component 30 according to the bend line, for example, adjusts the flexible display component 30 to display the screen in accordance with the bend line according to the bend line.

In an embodiment, the piezoelectric sensing unit 51 is in a strip shape, and the at least two piezoelectric sensing units 51 are spaced apart from each other and sequentially housed in the recessed portion 302, and are respectively separated from the recessed portion 302. The structure of the corresponding position is adapted. It can be understood that, in other embodiments, the voltage sensing unit 51 may be arranged in other shapes, and any two adjacent piezoelectric sensing units 51 of the at least two piezoelectric sensing units 51 may be arranged next to each other.

The flexible electronic device 1 includes a pad region 80. The pad region 80 is provided with at least two solder joints 81, the at least two solder joints 81 are respectively electrically connected to the processor 70, and the at least two piezoelectric sensing units 51 are connected to the at least two solder joints 81. Points 81 correspond one-to-one.

Specifically, a metal lead 511 is provided on the front and back of each piezoelectric sensing unit 51, and the metal lead 511 electrically connects the piezoelectric sensing unit 51 and the corresponding solder joint 81. And each solder joint 81 is electrically connected to the processor 70, so that the processor 70 can determine the bending of the flexible display component 30 according to the bending position identification signal generated by the piezoelectric sensing unit 51. Folded position.

Please refer to FIG. 7 and FIG. 8 together. In this embodiment, the number of the at least one piezoelectric sensing unit 51 is six, three of which correspond to the lateral bending positions H1, H2, H3, and the other three correspond to Vertical bending positions V1, V2 and V3. The number of the metal leads 511 is also six. The number of the solder joints 81 is also six. Each metal lead 511 electrically connects a corresponding piezoelectric sensing unit 51 and a corresponding solder joint 81.

When the flexible electronic device 1 is not bent horizontally, the voltages of the piezoelectric induction units 51 corresponding to the three bending positions H1, H2, and H3 are equal. When the flexible electronic device 1 is bent at a bending position H2, the voltage of the piezoelectric induction unit 51 corresponding to the bending position H2 is greater than the voltage corresponding to the other two bending positions H1 and H3. The voltage of the electric induction unit 51. Therefore, it can be determined whether the corresponding bending position of the flexible electronic device 1 is bent according to whether the piezoelectric sensing unit 51 generates a voltage.

It can be understood that, in other embodiments, the number, length, and interval length of the adjacent piezoelectric sensing units 51 may be determined according to the bending radius and sensitivity requirements of the flexible electronic device 1.

Please refer to FIG. 9 together, which is a schematic cross-sectional structure diagram of a solder joint 81 in an embodiment of the present application. The solder joint 81 includes an insulating layer 811, a metal conductive layer 812, a protective layer 813, a planarization layer 814, and an overlap layer 815, which are disposed on top of each other. The protective layer 813 is disposed on the metal conductive layer 812 and surrounds the metal conductive layer 812. The protective layer 813 is provided with a protective layer opening 8131, and the metal conductive 812 layer is exposed from the protective layer opening 8131. The planarizing layer 814 is disposed on the protective layer 813 and surrounds the protective layer 813. The planarizing layer 814 is provided with a planarizing layer opening 8141 at a position corresponding to the protective layer opening 8131. A bonding layer 815 overlaps one of the planarization layer 814, the planarization layer opening 8141, and the protective layer opening 8131, and the metal lead 511 of the piezoelectric sensing unit 51 overlaps the bonding layer. On 815, the metal conductive layer 812 is electrically connected to the processor 70.

Please refer to FIG. 10 together. FIG. 10 is a schematic flowchart of a method for determining a bending position according to an embodiment of the present application. The bending position determination method is applied to the aforementioned flexible electronic device 1, and the execution order is not limited to the order shown in FIG. 10. The method includes steps:

In step 101, when the flexible electronic device 1 is bent, the piezoelectric sensing unit 51 corresponding to the bending position of the flexible electronic device 1 generates a corresponding bending position identification signal.

Specifically, the piezoelectric sensing unit 51 is a piezoelectric sensor. When the piezoelectric sensing unit 51 is compressed / stretched, the piezoelectric material generates a piezoelectric effect, and charges with opposite polarities but equal electric charges appear on two polar surfaces. That is, the piezoelectric induction unit 51 generates a voltage when it is bent.

Step 102: Determine a bending position according to the bending position identification signal.

Specifically, the processor 70 determines a bending position according to the bending position identification signal.

Specifically, the processor 70 determines whether the position of the flexible display component 30 is bent according to whether the piezoelectric sensing unit 51 at the corresponding position of the flexible display component 30 generates a voltage.

Specifically, the piezoelectric induction unit 51 generates a voltage when it is bent, and the processor 70 determines the flexible display assembly 30 when a voltage is generated by the piezoelectric induction unit 51 at a position corresponding to the flexible display assembly 30. This position is bent; the piezoelectric sensing unit 51 does not generate a voltage when there is no bending, and the processor 70 generates no voltage when the piezoelectric sensing unit 51 at a corresponding position of the flexible display component 30 does not generate a voltage. It is determined that the position of the flexible display assembly 30 is not bent.

Further specifically, each piezoelectric sensing unit 51 is set corresponding to a bending position, and the bending position is stored, and specifically stored in the form of a correspondence table between the piezoelectric sensing unit and the bending position. When the piezoelectric sensing unit 51 generates a voltage, the processor 70 determines that the bending position corresponding to the piezoelectric sensing unit 51 is bent according to a correspondence table between the piezoelectric sensing unit and the bending position.

Step 103: Adjust the content display of the flexible display component 30 according to the bending position.

Specifically, the processor 70 adjusts the content display of the flexible electronic device 1 according to the bending position, for example, adjusts the split screen and the like according to the bending position.

The flexible electronic device and the bending position determining method of the present application can determine the bending position at any position of the flexible electronic device in real time through a piezoelectric sensing component, so that the flexible electronic device can adjust the display according to the bending surrounding. Content with a better user experience.

The processor 70 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), and application-specific integrated circuits (ASICs). ), Ready-made programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor, or the processor may be any conventional processor, etc. The processor is a control center of the flexible electronic device 1 and uses various interfaces and lines to connect the entire flexible electronic device. Various parts of the device 1.

It can be understood that the flexible electronic device 1 further includes a memory (not shown), and various data of the flexible electronic device 1 can be stored in the memory. The memory may be specifically used to store the computer program and / or module, and the processor 70 runs or executes the computer program and / or module stored in the memory and calls data stored in the memory. Realize various functions of the flexible electronic device 1. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, application programs required for multiple functions (such as a sound playback function, an image playback function, etc.), etc .; the storage data area may store Data (such as audio data, phone book, etc.) created based on the use of the mobile phone. In addition, the memory may include a high-speed random access memory, and may also include a non-volatile memory, such as a hard disk, an internal memory, a plug-in hard disk, a Smart Media Card (SMC), and a Secure Digital (SD). ) Card, flash memory card (Flash card), multiple disk storage devices, flash memory devices, or other volatile solid-state storage devices.

The above are the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principles of the present application, several improvements and retouches can be made. Application for protection.

Claims (14)

1. A flexible electronic device, characterized in that the flexible electronic device includes a flexible substrate, a flexible display component, a piezoelectric sensing component, and a processor. The flexible display component is stacked on the flexible substrate, and the flexible The at least two adjacent side walls of the display component are provided with recesses along the peripheral direction of the flexible display component. The piezoelectric sensing component includes at least two piezoelectric sensing units, and the at least two piezoelectric sensing components. A unit is disposed in the recessed portion, and each of the side walls corresponds to at least one of the piezoelectric induction units, and when the flexible electronic device is bent, the pressure corresponding to the bending position of the flexible electronic device is The electric induction unit generates a corresponding bending position identification signal, the processor determines a bending position according to the bending position identification signal, and adjusts the content display of the flexible display component according to the bending position.
2. The flexible electronic device according to claim 1, wherein the flexible display component has a display area and a non-display area provided around a periphery of the display area, and the recessed portion is disposed in the non-display area.
3. The flexible electronic device according to claim 1, wherein the at least two piezoelectric sensing units are disposed in the recessed portion at intervals, and are respectively adapted to inner walls of corresponding positions of the recessed portion.
4. The flexible electronic device according to any one of claims 1 to 3, wherein the piezoelectric induction unit generates a voltage when it is bent, and the processor is configured to apply the piezoelectric signal at a position corresponding to the flexible display component. When a voltage is generated by the sensing unit, it is determined that the position of the flexible display component is bent; when the piezoelectric sensing unit is not bent, no voltage is generated, and the voltage of the processor at the corresponding position of the flexible display component is bent. When no voltage is generated by the electric induction unit, it is determined that the position of the flexible display component is not bent.
5. The flexible electronic device according to claim 4, wherein each piezoelectric sensing unit is provided corresponding to a bending position, and when the piezoelectric sensing unit generates a voltage, the flexible electronic device determines the piezoelectric sensing unit The corresponding bending position is bent.
6. The flexible electronic device according to claim 1, wherein the flexible electronic device comprises a pad area, and the pad area is provided with at least two solder joints, and the at least two solder joints are respectively connected to the processor. The at least two piezoelectric sensing units are electrically connected to the at least two solder joints in a one-to-one correspondence.
7. The flexible electronic device according to claim 6, wherein a metal lead is provided on a front surface and a back surface of each of the piezoelectric sensing units, and the metal lead connects the piezoelectric sensing unit with the corresponding welding. Electrical connection between points.
8. The flexible electronic device according to any one of claims 6 to 7, wherein each of the solder joints comprises an insulating layer, a metal conductive layer, a protective layer, a planarization layer, and an overlap layer, which are arranged in a stack, A protective layer is disposed on the metal conductive layer and surrounds the metal conductive layer. The protective layer is provided with a protective layer opening, the metal conductive layer is exposed from the protective layer opening, and the planarization layer is disposed on the metal conductive layer. A planarizing layer opening is provided at a position corresponding to the protective layer opening on the protective layer and surrounding the protective layer, and the overlapping layer overlaps one of the planarizing layer and the planarizing layer. The planarizing layer opening and the protective layer opening, a metal lead of the piezoelectric sensing unit is overlapped on the overlapping layer, and the metal conductive layer is electrically connected to the processor.
9. The flexible electronic device according to claim 2, wherein the flexible display component includes at least an anode layer, a light emitting layer, and a cathode layer, the anode layer is stacked on the flexible substrate, and the light emitting layer is stacked The anode layer is disposed on the anode layer, the cathode layer is disposed on the light-emitting layer, and the recessed portion is disposed on any one of the anode layer, the light-emitting layer, and the cathode layer. An area corresponding to the non-display area in a layered structure formed by two adjacent layers or three adjacent layers.
10. The flexible electronic device according to claim 9, wherein the flexible display component further comprises a hole transporting layer provided between the anode layer and the light emitting layer, and a hole transporting layer provided between the light emitting layer and the light emitting layer. The electron transport layer between the cathode layers, the hole transport layer is used to help the holes generated by the anode layer move to the light emitting layer, and the electron transport layer is used to help the electrons released by the cathode layer to Smoothly transmitted to the light-emitting layer, and the recessed portion is provided in any one of the anode layer, the hole-transport layer, the light-emitting layer, the electron-transport layer, and the cathode layer An area corresponding to the non-display area in a layered structure formed by two adjacent layers, three adjacent layers, four adjacent layers, or five adjacent layers.
11. The flexible electronic device according to claim 10, wherein the flexible display assembly further comprises a thin film transistor array, the thin film transistor array is disposed between the flexible substrate and the anode layer, and the thin film transistor Each thin film transistor in the array corresponds to a pixel in the light emitting layer. When a corresponding pixel in the light emitting layer needs to be lit, the thin film transistor corresponding to the pixel in the thin film transistor array is turned on to drive the pixel. The recessed portion is disposed at any one of the thin film transistor array, the anode layer, the hole transport layer, the light emitting layer, the electron transport layer, and the cathode layer, and is adjacent to each other. An area corresponding to the non-display area in a layered structure formed by two layers, any adjacent three layers, any adjacent four layers, any adjacent five layers, or adjacent six layers.
12. The flexible electronic device according to claim 11, wherein the flexible display component further comprises a first inorganic layer, an organic layer, and a second inorganic layer, and the first inorganic layer is stacked and disposed on the cathode layer away from the cathode. One side of the anode layer, the organic layer being stacked on the side of the first inorganic layer facing away from the anode layer, and the second inorganic layer being provided on the side of the organic layer facing away from the anode layer, The recessed portion is provided in the thin film transistor array, the anode layer, the hole transport layer, the light emitting layer, the electron transport layer, the cathode layer, the first inorganic layer, Any one of the organic layer and the second inorganic layer, any two adjacent layers, any three adjacent layers, any four adjacent layers, any five adjacent layers, any six adjacent layers, In a region corresponding to the non-significant region, the layered structure formed by any adjacent seven layers, any adjacent eight layers, or adjacent nine layers.
13. A method for determining a bending position, wherein the method for determining a bending position is applied to a flexible electronic device according to any one of claims 1 to 12, wherein the method for determining a bending position includes steps:

    When the flexible electronic device is bent, the piezoelectric induction unit corresponding to the bending position of the flexible electronic device generates a corresponding bending position identification signal;

    Determining a bending position according to the bending position identification signal; and

    Adjusting the content display of the flexible electronic device according to the bending position.
14. The method for determining a bending position according to claim 13, wherein the method for determining a bending position comprises the steps of:

    Determining whether the piezoelectric induction unit generates a voltage;

    Determining that the position corresponding to the piezoelectric sensing unit of the flexible display component is bent when the piezoelectric sensing unit generates a voltage;

    When no voltage is generated by the piezoelectric sensing unit, it is determined that a position corresponding to the piezoelectric sensing unit of the flexible display component is not bent.

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