CN113326491A - Display panel, driving method thereof and display device - Google Patents

Display panel, driving method thereof and display device Download PDF

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Publication number
CN113326491A
CN113326491A CN202010128304.1A CN202010128304A CN113326491A CN 113326491 A CN113326491 A CN 113326491A CN 202010128304 A CN202010128304 A CN 202010128304A CN 113326491 A CN113326491 A CN 113326491A
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Prior art keywords
display panel
switch
devices
photoelectric
signal
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CN202010128304.1A
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CN113326491B (en
Inventor
李鹏飞
杨东伦
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EverDisplay Optronics Shanghai Co Ltd
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EverDisplay Optronics Shanghai Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31—User authentication
    • G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Computer Security & Cryptography (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Computer Hardware Design (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Image Input (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The invention discloses a display panel, a driving method thereof and a display device. The display panel comprises a plurality of photoelectric devices, a switch module, a plurality of first scanning driving lines extending along a first direction and a plurality of signal transmission lines extending along a second direction; the switch module connects a plurality of photoelectric devices in series and parallel under a photovoltaic power generation mode; the switch module connects the plurality of photoelectric devices to the signal transmission line and the first scanning driving line in a fingerprint identification or sign detection mode; wherein, a line photoelectric device is connected with a first scanning drive line, and a list photoelectric device is connected with a signal transmission line. According to the technical scheme, the power consumption of the display panel is reduced, the space of the display panel is occupied by integrating multifunctional design, the technical problem of the volume of the display device is increased, the space of the display panel is effectively utilized, the standby time of the display panel is prolonged, the practicability and the versatility of the display device are increased, and the use value of the display panel is improved.

Description

Display panel, driving method thereof and display device
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display panel, a driving method thereof and a display device.
Background
At present, intelligent terminal has great demand in market, and meanwhile, people also more and more to intelligent terminal's functional requirement, especially information security function such as fingerprint identification, and the integration design that increases functions such as fingerprint identification can increase equipment size, is unfavorable for equipment such as cell-phones to realize comprehensive screen function, has increased complete machine module space. Meanwhile, the power consumption of a display panel of the intelligent terminal device in the prior art is also high, the electric quantity of the battery cannot meet the requirement of long-term use of the display panel, frequent charging is needed, and great inconvenience is brought to a user.
Disclosure of Invention
The invention provides a display panel, a driving method thereof and a display device, which effectively utilize the space of the display panel, prolong the standby time of the display panel, increase the practicability and the versatility of the display device and improve the use value of the display panel.
In a first aspect, an embodiment of the present invention provides a display panel, including: the photoelectric conversion device comprises a plurality of photoelectric devices, a switch module, a plurality of first scanning driving lines extending along a first direction and a plurality of signal transmission lines extending along a second direction;
the switch module connects a plurality of the photoelectric devices in series and parallel in a photovoltaic power generation mode;
the switch module connects a plurality of photoelectric devices to the signal transmission line and the first scanning driving line in a fingerprint identification or sign detection mode; wherein one row of said optoelectronic devices is connected to one of said first scan drive lines, and one column of said optoelectronic devices is connected to one of said signal transmission lines; the row direction of the photoelectric devices is parallel to the first direction, and the column direction of the photoelectric devices is parallel to the second direction; or the row direction of the photoelectric devices is parallel to the second direction, the column direction of the photoelectric devices is parallel to the first direction, and the first direction is crossed with the second direction.
Optionally, the solar cell further comprises a light-emitting device, and the photoelectric device and the adjacent light-emitting device are arranged alternately.
Optionally, the switch module includes a plurality of first timing switches, a plurality of second timing switches, and a plurality of first control switches;
a plurality of first timing switches are connected in series on each first scanning driving line, and at least part of the photoelectric devices in one row are respectively connected to one first timing switch on one first scanning driving line;
at least some of the rows of the optoelectronic devices are connected to one of the signal transmission lines through one of the second timing switches, respectively, a first end of the optoelectronic device in a first row is connected to one of the signal transmission lines, and a second end of the optoelectronic device in a last row is connected to one of the signal transmission lines;
the first terminals of at least some of the optoelectronic devices in a row are connected to the second terminal of an adjacent said optoelectronic device by said first control switch.
Optionally, the display device further comprises a plurality of first switching signal lines extending along the first direction and a plurality of second switching signal lines extending along the second direction;
the first time sequence switch and the second time sequence switch which are connected with the photoelectric device on the same row are respectively connected with the same first switching signal line through respective control ends, and the signal input end of each first switching signal line is mutually and electrically connected;
and the control end of the first control switch connected with the photoelectric device on the same column is connected to the same second switching signal line, and the signal input end of each second switching signal line is electrically connected with each other.
Optionally, a second terminal of a first timing switch connected in series on one of the first scan driving lines is connected to a first terminal of an adjacent first timing switch;
the second terminals of at least some of the optoelectronic devices in a row are connected to the second terminal of the first timing switch and the first terminal of the last of the optoelectronic devices is connected to the first terminal of the first timing switch.
Optionally, a first terminal of the second timing switch is connected to the signal transmission line, and a second terminal is connected to a first terminal of the optoelectronic device.
Alternatively, a first end of the first control switch is connected between the corresponding photoelectric device and the first scan driving line connected to the adjacent photoelectric device, and a second end is connected to a first end of the photoelectric device.
Optionally, the optoelectronic device further comprises an energy storage module, the signal transmission line connected to the optoelectronic device in the first column is connected to a first end of the energy storage module, the signal transmission line connected to the optoelectronic device in the last column is connected to a second end of the energy storage module, and the energy storage module comprises an energy storage capacitor.
Alternatively, a plurality of the photoelectric devices in the display panel form a plurality of regions, and the photoelectric devices located in the same row in each of the regions are connected to one of the first scan driving lines.
Optionally, a first column of said optoelectronic devices in each said area is connected to a first column of said optoelectronic devices in an adjacent said area by a switch, and a last column of said optoelectronic devices in each said area is connected to a last column of said optoelectronic devices in an adjacent said area by a switch.
Optionally, the optoelectronic device comprises at least one of an organic optoelectronic device, a silicon-based optoelectronic device, and a thin film optoelectronic device.
In a second aspect, an embodiment of the present invention further provides a driving method of a display panel, where the display panel includes: the photoelectric conversion device comprises a plurality of photoelectric devices, a switch module, a plurality of first scanning driving lines extending along a first direction and a plurality of signal transmission lines extending along a second direction; the switch module connects a plurality of the photoelectric devices in series and parallel in a photovoltaic power generation mode; the switch module connects a plurality of photoelectric devices to the signal transmission line and the first scanning driving line in a fingerprint identification mode; wherein one row of said optoelectronic devices is connected to one of said first scan drive lines, and one column of said optoelectronic devices is connected to one of said signal transmission lines; the row direction of the photoelectric devices is parallel to the first direction, and the column direction of the photoelectric devices is parallel to the second direction; or the row direction of the photoelectric devices is parallel to the second direction, the column direction of the photoelectric devices is parallel to the first direction, and the first direction is crossed with the second direction;
the driving method of the display panel includes:
in a photovoltaic power generation mode, connecting a plurality of the photoelectric devices in series and parallel through the switch module;
in a fingerprint identification or sign detection mode, the photoelectric devices are connected to the signal transmission line and the first scanning driving line through the switch module.
Optionally, the switch module comprises: a plurality of first timing switches, a plurality of second timing switches, and a plurality of first control switches; a plurality of first timing switches are connected in series on each first scanning driving line, and at least part of the photoelectric devices in one row are respectively connected to one first timing switch on one first scanning driving line; at least part of the signal transmission lines are connected with a plurality of second time sequence switches, at least part of the columns of the photoelectric devices are respectively connected to one signal transmission line through one second time sequence switch, the first end of the photoelectric device in the first column is connected to one signal transmission line, and the second end of the photoelectric device in the last column is connected to one signal transmission line; a first terminal of at least some of the optoelectronic devices in a row is connected to a second terminal of an adjacent said optoelectronic device by the first control switch; the first switching signal lines extend along the first direction and the second switching signal lines extend along the second direction; the first time sequence switch and the second time sequence switch which are connected with the photoelectric device on the same row are respectively connected with the same first switching signal line through respective control ends, and the signal input end of each first switching signal line is mutually and electrically connected; the control end of a first control switch connected with the photoelectric devices on the same column is connected to the same second switching signal line, and the signal input end of each second switching signal line is electrically connected with each other;
in a photovoltaic power generation mode, connecting a plurality of the optoelectronic devices in series-parallel by the switch module, comprising:
controlling the first control switch to be conducted according to the second switching signal;
in a fingerprint recognition mode, connecting a plurality of the photoelectric devices to the signal transmission line and the first scan driving line through the switch module, including:
and controlling the first time sequence switch and the second time sequence switch to be conducted according to the first switching signal, and controlling the conducting time sequence of the first time sequence switches of each row according to a scanning driving signal.
In a third aspect, an embodiment of the present invention further provides a display device, including the display panel of the first aspect, further including a first timing driving circuit and a second timing driving circuit;
the first timing driving circuit comprises a plurality of scanning driving signal output ends, and the first scanning driving line is connected to the scanning driving signal output ends;
the second timing driving circuit includes a plurality of signal input terminals to which the signal transmission lines are connected.
Optionally, the timing control circuit further comprises a signal conversion module and a signal processing module, wherein the second timing driving circuit, the signal conversion module and the signal processing module are electrically connected in sequence;
the second time sequence driving circuit outputs the received signals to the signal conversion module for signal conversion, and the converted signals are processed through the signal processing module.
The display panel provided by the embodiment of the invention comprises a plurality of photoelectric devices, a switch module, a plurality of first scanning driving wires extending along a first direction and a plurality of signal transmission wires extending along a second direction, wherein in a photovoltaic power generation mode, the switch module is controlled to be conducted to connect each row of the photoelectric devices in series through the first scanning driving wires, the photoelectric devices connected in series in rows are connected in parallel through two rows of signal transmission wires in the head and the tail, the photovoltaic power generation is realized to supply power for the display panel through the photoelectric devices connected in series and parallel, in a fingerprint identification mode, the conducting time sequence of the switch module is controlled, each photoelectric device is respectively and independently connected to the first scanning driving wires and the signal transmission wires, and each photoelectric device is controlled to output fingerprint identification signals through the signal transmission wires at different time sequences. The technical scheme of this embodiment, set up one set of photoelectric device and the switch module and the signal line that correspond in display panel, photovoltaic power generation has been add for display panel, fingerprint identification and sign detection function, photovoltaic power generation has been realized, the switching of three kinds of functions of fingerprint identification and sign detection, need not divide at display panel and establish three sets of systems and carry out photovoltaic power generation respectively, fingerprint identification and sign detection, it is big to have alleviated display panel power consumption, and it occupies the display panel space to integrate multi-functional design, the technical problem of increase display device's volume, display panel's space has effectively been utilized, display panel's standby time has been prolonged, display device's practicality and multifunctionality have been increased, display panel's use value has been improved.
Drawings
Fig. 1 is a schematic diagram of a module structure of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a display panel for fingerprint identification according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a display panel for physical sign detection according to an embodiment of the present invention;
fig. 4 is a schematic top view of a display panel according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 6 is a schematic view of the structure of portion 10a of FIG. 5;
FIG. 7 is a timing diagram of signals corresponding to the display panel shown in FIG. 5;
fig. 8 is a schematic structural diagram of a module of a display panel for photovoltaic power generation according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a module of a display panel for fingerprint identification according to an embodiment of the present invention;
fig. 10 is a schematic block diagram of another display panel according to an embodiment of the present invention;
fig. 11 is a flowchart illustrating a driving method of a display panel according to an embodiment of the invention;
fig. 12 is a schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 13 is a schematic structural diagram of another display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic block diagram of a display panel according to an embodiment of the present invention. The display panel 10 can be applied to an intelligent terminal device, such as a mobile phone or an intelligent wearable device such as a smart watch. As shown in fig. 1, the display panel 10 includes: a plurality of photoelectric devices 1, a switching module 2, a plurality of first scan driving lines S extending in a first direction L1, and a plurality of signal transmission lines D extending in a second direction L2; the switch module 2 connects a plurality of photoelectric devices 1 in series and parallel in a photovoltaic power generation mode; the switch module 2 connects the plurality of photoelectric devices 1 to the signal transmission line D and the first scanning driving line S in a fingerprint identification or sign detection mode; wherein, a row of photoelectric devices 1 is connected with a first scanning driving line S, and a column of photoelectric devices 1 is connected with a signal transmission line D; the photoelectric devices 1 are arranged in a row direction parallel to the first direction L1 and in a column direction parallel to the second direction L2; or the photoelectric devices 1 are arranged in a row direction parallel to the second direction L2, in a column direction parallel to the first direction L1, and in a first direction L1 intersecting the second direction L2.
Referring to fig. 1, the present embodiment is described by taking an example in which the photoelectric devices 1 are arranged in a row direction parallel to the first direction L1 and in a column direction parallel to the second direction L2. Specifically, the photoelectric device 1 is a device that converts light energy into electric energy based on a photoelectric effect, such as a photoelectric converter or a photosensor. The switch module 2 can be turned on or off under the control of the control signal, and the photoelectric devices 1 are connected in series or in parallel to realize photovoltaic power generation, or the photoelectric devices 1 are independently connected to the first scanning driving line S and the signal transmission line D to control the time sequence of the output of the fingerprint identification signal of the photoelectric devices 1 in the fingerprint identification mode. In the photovoltaic power generation mode, a control signal may be output to the switch module 2, each row of the optoelectronic devices 1 is connected in series through the first scan driving line S connected to the row of the optoelectronic devices 1 by the switch module 2, for example, each row of the optoelectronic devices 1 is connected in series through the first scan driving line S1-Sn, each row of the optoelectronic devices 1 connected in series is connected in parallel through the signal transmission line D1 and the signal transmission line Dn at the head and tail ends, the optoelectronic devices 1 connected in series and parallel convert the light energy irradiated by the display panel 10 into electric energy for storage, and the battery in the display device equipped with the display panel 10 is charged to supply power to the display panel 10. Illustratively, the number of the photoelectric devices 1 connected in series in each row can be set through the switch module 2, so as to control the output voltage of the photoelectric devices 1 in each row, and the number of the rows of the photoelectric devices 1 connected in parallel is set, so as to control the output current of the photoelectric devices 1 connected in series and parallel.
Fig. 2 is a schematic structural diagram of a display panel for fingerprint identification according to an embodiment of the present invention. In conjunction with fig. 1 and 2, in the fingerprint recognition mode, fingerprint information of a human body can be recognized by using the optoelectronic device 1 and the light emitting device 3 disposed in the display panel 10, which is helpful for implementing a fingerprint unlocking function of the display apparatus. Among them, the light emitting device 3 may be an organic light emitting device including a light emitting function, but is not limited thereto, and may be implemented in various forms, for example, a liquid crystal display device, an electrophoretic display device, an electrowetting display device, and the like. Specifically, when fingerprint identification is performed through the display panel 10, the light emitting device 3 in the display panel 10 may be controlled to emit light, so as to irradiate light onto the surface of the finger 20a, since the finger 20a has uneven ridges or wrinkles, different reflected light can be reflected to the photoelectric device 1 in the display panel 10, and the photoelectric device 1 can detect the different reflected light of the fingerprint 20a on the display panel 10, thereby identifying fingerprint information. The control signal can be output to the switch module 2, and the scanning driving signal output to each row of switch modules 2 according to the first scanning driving line S controls the switch module 2 to be conducted, so that each photoelectric device 1 is connected to the signal transmission line D, and the fingerprint identification signal is output through the signal transmission line D. For example, in the first stage, the scanning driving signal output by the first scanning driving line S1 controls the switch modules 2 in the first row to be turned on to enable the optoelectronic devices 1 in the first row to output the fingerprint identification signal through the signal transmission lines D respectively connected thereto, in the second stage, the scanning driving signal output by the first scanning driving line S2 controls the switch modules 2 in the second row to be turned on to enable the optoelectronic devices 1 in the second row to output the fingerprint identification signal through the signal transmission lines D respectively connected thereto, and so on, each stage only controls the optoelectronic devices 1 in one row to output the fingerprint identification signal, so that the optoelectronic devices 1 in the whole display panel 10 independently output the fingerprint identification signal.
Fig. 3 is a schematic structural diagram of a display panel for physical sign detection according to an embodiment of the present invention. With reference to fig. 1 and fig. 3, the display panel provided in this embodiment can also be used for detecting physical signs, in the physical sign detection mode, the photoelectric device 1 and the light emitting device 3 configured in the display panel 10 can be used to identify physical sign information of the human body 20b, specifically, when fingerprint identification is performed through the display panel 10, the light emitting device 3 in the display panel 10 can be controlled to continuously emit light (for example, green light) with a corresponding wavelength to the outside, and at the same time, the photoelectric device 1 continuously receives light reflected from blood in the human body 20b to the photoelectric device 3, so as to detect information such as blood pulse rate (heart rate) or blood volume (cardiac output), and the emitted light from the display panel 10 enters the human body 20b to detect the flow of the blood, and real-time detection of the physical signs can be achieved through photoplethysmography. Under the sign detection mode, the switch modules 2 can be controlled to be switched on according to the scanning driving signal output to each row of the switch modules 2 by the first scanning driving line S based on the same principle as the fingerprint identification mode, each photoelectric device 1 is connected to the signal transmission line D, the sign detection signal is output through the signal transmission line D, and each photoelectric device 1 is controlled to independently output the sign detection signal.
The display panel provided by the embodiment of the invention comprises a plurality of photoelectric devices, a switch module, a plurality of first scanning driving wires extending along a first direction and a plurality of signal transmission wires extending along a second direction, wherein in a photovoltaic power generation mode, the switch module is controlled to be conducted to connect each row of the photoelectric devices in series through the first scanning driving wires, the photoelectric devices connected in series in rows are connected in parallel through two rows of signal transmission wires in the head and the tail, the photovoltaic power generation is realized to supply power for the display panel through the photoelectric devices connected in series and parallel, in a fingerprint identification mode, the conducting time sequence of the switch module is controlled, each photoelectric device is respectively and independently connected to the first scanning driving wires and the signal transmission wires, and each photoelectric device is controlled to output fingerprint identification signals through the signal transmission wires at different time sequences. The technical scheme of this embodiment, set up one set of photoelectric device and the switch module and the signal line that correspond in display panel, photovoltaic power generation has been add for display panel, fingerprint identification and sign detection function, photovoltaic power generation has been realized, the switching of three kinds of functions of fingerprint identification and sign detection, need not divide at display panel and establish three sets of systems and carry out photovoltaic power generation respectively, fingerprint identification and sign detection, it is big to have alleviated display panel power consumption, and it occupies the display panel space to integrate multi-functional design, the technical problem of increase display device's volume, display panel's space has effectively been utilized, display panel's standby time has been prolonged, display device's practicality and multifunctionality have been increased, display panel's use value has been improved.
Alternatively, referring to fig. 1, the optoelectronic device 1 includes at least one of an organic optoelectronic device, a silicon-based optoelectronic device, and a thin film optoelectronic device. Specifically, devices with light, thin and light-transmitting characteristics such as an organic photoelectric device, a silicon-based photoelectric device or a thin-film photoelectric device can be selected, light energy received by the display panel 10 is converted into electric energy in a photovoltaic power generation mode, and a reflected light signal emitted to the display panel 10 from the surface of a finger is detected in a fingerprint identification mode, so that the light-emitting performance of a light-emitting device inside the display panel 10 is prevented from being influenced while photovoltaic power generation or fingerprint identification is realized, and the film thickness of the display panel 10 is reduced.
Fig. 4 is a schematic top view of a display panel according to an embodiment of the present invention. As shown in fig. 4, the display panel 10 optionally further includes light emitting devices 3, and the photoelectric devices 1 are alternately disposed with adjacent light emitting devices 3. In the present embodiment, the light emitting device 3 is exemplified as an organic light emitting device, the light emitting device 3 can constitute a pixel unit of the display panel 10 for displaying images, and the light emitting device 3 may specifically include an organic light emitting device 3 for emitting white light and/or colored light, and has an anode layer, a cathode layer, and a light emitting functional layer disposed between the anode layer and the cathode layer, and is connected to a thin film transistor in the driving circuit through the cathode layer or the anode layer, and after receiving a driving current, the pixel unit is made to emit red light, green light, or blue light through the light emitting functional layer of each light emitting device 3. Specifically, the photoelectric device 1 can be arranged in the area of the gap between the adjacent light emitting devices 3 in the display panel 10, so that the photoelectric device 1 and the light emitting devices 3 can be alternately arranged, the internal space of the display panel 10 can be effectively utilized, the photoelectric device 1 is maximally arranged, the photoelectric conversion efficiency of the photoelectric device 1 is improved, the endurance time of the display panel 10 is further prolonged, the fingerprint identification performance is improved, meanwhile, the multifunctional arrangement for amplifying the volume of the display panel 10 can be avoided, and the display panel 10 is lighter and thinner.
Fig. 5 is a schematic structural diagram of another display panel according to an embodiment of the present invention. Fig. 6 is a schematic structural diagram of a portion 10a in fig. 5, and fig. 6 shows a specific structure of the portion 10a enclosed by a dotted line in fig. 5, which embodies port names of the first timing switch M1, the plurality of second timing switches M2, and the plurality of first control switches T1. With reference to fig. 5 and 6, optionally, the switch module 2 in the display panel 10 includes a plurality of first timing switches M1, a plurality of second timing switches M2, and a plurality of first control switches T1; a plurality of first timing switches M1 are connected in series on each first scanning driving line S, and at least some of the photoelectric devices 1 in a row are respectively connected to one first timing switch M1 on one first scanning driving line S; at least some of the columns of the optoelectronic devices 1 are respectively connected to one signal transmission line D through a second timing switch M2, the first end a1 of the optoelectronic device 1 of the first column is connected to one signal transmission line D, and the second end a2 of the optoelectronic device 1 of the last column is connected to one signal transmission line D; the first terminals a1 of at least some of the photovoltaic devices 1 in a row are connected to the second terminals a2 of the adjacent photovoltaic devices 1 by means of a first control switch T1.
Specifically, the first timing switch M1, the second timing switch M2, and the first control switch T1 may be thin film transistors, each of the first scan driving lines S is connected in series with a plurality of first timing switches M1, the first scan driving lines S may simultaneously output scan driving signals to the first timing switches M1 connected to one row of the optoelectronic devices 1, and the first scan driving lines S1 to S3 are controlled to respectively output different timing scan driving signals, so as to control the timing at which the first timing switches M1 of different rows are turned on. At least some columns, for example, each column of the optoelectronic devices 1 between the first column and the last column, are respectively connected to one signal transmission line D through the second timing switch M2, as shown in the connection situation of the optoelectronic devices 1 of the 2 nd to 4 th columns in fig. 5, the optoelectronic device 1 of the 2 nd column is connected to the signal transmission line D2, the optoelectronic device 1 of the 3 rd column is connected to the signal transmission line D3, the optoelectronic device 1 of the 4 th column is connected to the signal transmission line D4, the fingerprint identification signal of the optoelectronic device 1 of each column can be output to the signal transmission line D through the second timing switch M2 connected with the optoelectronic device 1, and the timing of turning on the second timing switch M2 of one column can be controlled, so as to realize that the optoelectronic device 1 in each column outputs the fingerprint identification signal in a time sharing manner. At least some of the photoelectric devices 1 in a row, for example, the first end a1 of the photoelectric device 1 between the first and the last of the row, is connected to the second end a2 of the adjacent photoelectric device 1 through the first control switch T1, so that the first control switch T1 of each row can be controlled to be turned on, the photoelectric devices 1 in a row are connected in series, after the photoelectric devices 1 in a row are connected in series, since the first end a1 of the photoelectric device 1 in the first column is connected to the signal transmission line D1, the second end a2 of the photoelectric device 1 in the last column is connected to the signal transmission line D5, and the photoelectric devices 1 in each row after the series connection can be connected in parallel.
Alternatively, in conjunction with fig. 5 and 6, the display panel 10 further includes a plurality of first switching signal lines G1 extending in the first direction L1 and a plurality of second switching signal lines G2 extending in the second direction L2; the first timing switch M1 and the second timing switch M2 connected to the same row of the optoelectronic devices 1 are respectively connected to the same first switching signal line G1 through respective control terminals, and the signal input terminal of each first switching signal line G1 is electrically connected to each other; the control terminals G3 of the first control switches T1 connected to the same column of photoelectric devices 1 are connected to the same second switching signal line G2, and the signal input terminals of each second switching signal line G2 are electrically connected to each other. Specifically, the first switching signal line G1 may output a first switching signal to control the optoelectronic device 1 in the display panel 10 to be in the fingerprint recognition state, and the first switching signal may be output to the control terminal G1 of all the first timing switches M1 and the control terminal G2 of the second timing switch M2 at the same time through the first switching signal line G1 to write a voltage to the control terminal G1 of the first timing switch M1 and the control terminal G2 of the second timing switch M2. The second switching signal line G2 may output a second switching signal to control the optoelectronic device 1 in the display panel 10 to be in a photovoltaic power generation state, and output the second switching signal to the control terminals G3 of all the first control switches T1 at the same time through the second switching signal line G2 to write a voltage to the control terminals G3 of the first control switches T1.
Alternatively, with reference to fig. 5 and 6, the second terminal d1 of the first timing switch M1 connected in series on one first scan driving line S is connected to the first terminal S1 of the adjacent first timing switch M1; the second terminal a2 of at least some of the optoelectronic devices 1 in a row is connected to the second terminal d1 of the first timing switch M1, and the first terminal a1 of the last optoelectronic device 1 is connected to the first terminal s1 of the first timing switch M1. Specifically, the first timing switch M1 connected to the optoelectronic devices 1 in the same row is connected in series to the same first scan driving line S, so that a voltage can be written into the first terminal S1 of the first timing switch M1 in one row at the same time, after the voltages are written into the control terminal g1 and the first terminal S1 of the first timing switch M1 in one row at the same time, the first timing switch M1 is turned on and connected to the optoelectronic devices 1 through the first terminal S1 of the first timing switch M1, and the last optoelectronic device 1 in one row is directly connected to the first scan driving line S through the first terminal a 1.
Alternatively, the first terminal D2 of the second timing switch M2 is connected to the signal transmission line D, and the second terminal is connected to the first terminal a1 of the optoelectronic device 1 in conjunction with fig. 5 and 6. Specifically, the first end a1 of each column of the photoelectric device 1 between the first column and the last column is connected to the signal transmission line D through the second timing switch M2, when the first timing switch M1 is turned on and the control end g2 of the second timing switch M2 writes a voltage, the photoelectric device 1 performs fingerprint recognition, outputs a fingerprint recognition signal through the first end a1, writes a voltage to the second end s2 of the second timing switch M2, turns on the second timing switch M2, and the photoelectric device 1 outputs a fingerprint recognition signal to the signal transmission line D through the second timing switch M2.
Alternatively, the first terminal S3 of the first control switch T1 is connected between the corresponding photoelectric device 1 and the first scan driving line S to which the adjacent photoelectric device 1 is connected in conjunction with fig. 5 and 6, and the second terminal d3 is connected to the first terminal a1 of the photoelectric device 1. Specifically, in a photovoltaic power generation mode, when the second switching signal line G2 simultaneously outputs a second switching signal to the control terminals G3 of all the first control switches T1, and a voltage is written into the control terminals G3 of the first control switches T1, the first optoelectronic device 1 in a row converts optical energy into electrical energy, a voltage is written into the first terminal s3 of the adjacent optoelectronic device 1 from the second terminal a2, the first terminal s3 and the control terminal G3 of the first control switch T1 are both written with a voltage and then turned on, the optoelectronic device 1 and the first optoelectronic device 1 are connected in series, similarly, the optoelectronic devices 1 in a row are connected in series, and each optoelectronic device 1 in a row after being connected in series is connected in parallel through the signal transmission line D1 connected to the optoelectronic device 1 in the first column and the signal transmission line D5 connected to the optoelectronic device 1 in the last column.
FIG. 7 is a timing diagram of signals corresponding to the display panel shown in FIG. 5. The operation principle of the display panel 10 provided in the present embodiment will be described with reference to fig. 5 and 7. At the stage T1, the first switching signal G1 is a low level signal, the second switching signal G2 is a high level signal, the optoelectronic devices 1 in the display panel 10 are in a photovoltaic power generation mode, the second switching signal G2 controls the first control switch T1 to be turned on, the first timing switch M1 and the second timing switch M2 are turned off, the optoelectronic devices 1 in each row are connected in series and then connected in parallel, and the optoelectronic devices 1 convert the light energy received by the display panel 10 into electric energy to store the electric energy and generate power for the display panel 10. In the phases t21-t23, the first switching signal G1 is a high level signal, the second switching signal G2 is a low level signal, the optoelectronic devices 1 in the display panel 10 are in the fingerprint identification or sign detection mode (taking the fingerprint identification mode as an example), in the phase t21, the first switching signal G1 and the scan driving signal S1 are simultaneously high level signals, the first switching signal G1 writes a voltage to the control terminal G1 of the first timing switch M1 and the control terminal G2 of the second timing switch M2, the scan driving signal S1 writes a voltage to the first terminal S1 of the first timing switch M1 connected to the optoelectronic devices 1 in the first row, the first timing switch M1 in the row is turned on, the fingerprint identification signal generated by each optoelectronic device 1 performing fingerprint identification is output to the second terminal S2 of the second timing switch M2, the second timing switch M2 is turned on, the optoelectronic devices 1 in the first row output fingerprint identification signals through the connected signal transmission lines D1-5, similarly, at the stage t22, the optoelectronic devices 1 in the second row simultaneously output the fingerprint identification signals through the connected second timing switch M2 and the signal transmission lines D1-D5, respectively, and at the stage t23, the optoelectronic devices 1 in the third row simultaneously output the fingerprint identification signals through the connected second timing switch M2 and the signal transmission lines D1-D5, respectively. Through the control of the conduction time sequence of the first control switch T1, the first time sequence switch M1 and the second time sequence switch M2, the display panel 10 achieves photovoltaic power generation and fingerprint identification in stages, the standby time of the display device is prolonged, and the versatility of the display device is increased.
Fig. 8 is a schematic structural diagram of a module of a display panel for photovoltaic power generation according to an embodiment of the present invention, and fig. 8 schematically illustrates a series-parallel connection situation of the optoelectronic devices 1 when the display panel 10 is in a photovoltaic power generation mode. Fig. 9 is a schematic structural diagram of a module of a display panel for fingerprint recognition according to an embodiment of the present invention, and fig. 9 schematically illustrates a connection form of the electro-optical device 1 with the first scan driving line S and the signal transmission line D when the display panel 10 is in a fingerprint recognition mode. In order to embody the connection relationship between the respective photoelectric devices 1 in the respective modes, the first control switch T1, the first timing switch M1, and the second timing switch M2 are omitted in fig. 8 and 9. In connection with fig. 5-8, in the photovoltaic generation mode at stage t1, the photovoltaic devices 1 in each row are connected in series, and the photovoltaic devices 1 in each row after series connection are connected in parallel. In the fingerprint recognition mode or the sign detection mode (described by taking the fingerprint recognition mode as an example) in the stages t21-t23 in conjunction with fig. 5-7 and 9, the timing at which the photoelectric devices 1 in the display panel 10 output the fingerprint recognition signals can be controlled, the photoelectric devices 1 in each row connected to the first scanning driving lines S1-S5 output the fingerprint recognition signals line by line, and each photoelectric device 1 in each row outputs the fingerprint recognition signals through the signal transmission lines D1-D10, respectively. The plurality of areas 11 provided on the display panel 10 are simultaneously in the fingerprint recognition mode, and fingerprint recognition can be performed at each position of the display panel 10.
Fig. 10 is a schematic block diagram of another display panel according to an embodiment of the present invention. As shown in fig. 8 to 10, alternatively, a plurality of the photoelectric devices 1 in the display panel 10 form a plurality of areas 11, and the photoelectric devices 1 located in the same row in each area 11 are connected to one first scan driving line S. Specifically, the optoelectronic device 1 in the display panel 10 may be divided into a plurality of regions 11, only the region 11a and the region 11b are shown in fig. 8 to 10, and each region 11 may be configured to have the same structure, and may perform photovoltaic power generation, fingerprint identification or physical sign detection. In the photovoltaic power generation or fingerprint identification mode, one or more regions 11 can be set to work simultaneously, for example, when the electric quantity of the display panel 10 is sufficient, only a small number of regions 11 can be set to perform photovoltaic power generation, so that unnecessary energy consumption is avoided; when the display panel 10 is short of electricity, the number of the regions 11 for performing photovoltaic power generation can be increased, and the output voltage or the output current provided by the photovoltaic device 1 can be increased to prolong the standby time of the display panel 10.
Alternatively, with reference to fig. 10, the first column of photovoltaic devices 1 in each zone is connected to the first column of photovoltaic devices 1 in the adjacent zone by means of a switch N1, and the last column of photovoltaic devices 1 in each zone is connected to the last column of photovoltaic devices 1 in the adjacent zone by means of a switch N2. Alternatively, the control terminal G4 of the switch N1 is connected to the second switching signal G2, the first terminal s4 is connected to the signal transmission line D1 connected to the optoelectronic device 1 in the first column in the region 11a, the second terminal D4 is connected to the signal transmission line D4 connected to the optoelectronic device 1 in the last column in the region 11a, the control terminal G5 of the switch N2 is connected to the second switching signal G2, the first terminal s5 is connected to the signal transmission line D5 connected to the optoelectronic device 1 in the first column in the region 11b, and the second terminal D5 is connected to the signal transmission line D connected to the optoelectronic device 1 in the last column in the region 11 b. Specifically, when the second switching signal G2 is a high-level signal, the first control switch T1, the switch N1 and the switch N2 are turned on, the optoelectronic devices 1 in the area 11a are connected in series and parallel, the optoelectronic devices 1 in the area 11b are connected in series and parallel, and the optoelectronic devices 1 in the area 11a after series and parallel are connected in parallel with the optoelectronic devices 1 in the area 11b after series and parallel, so that the output voltage and the output current of the optoelectronic devices 1 after series and parallel are increased, and the standby time of the display panel 10 is further prolonged.
Alternatively, referring to fig. 8, the display panel 10 further includes an energy storage module 4, the signal transmission line D connected to the first column of the optoelectronic devices 1 is connected to a first end of the energy storage module 4, the signal transmission line D connected to the last column of the optoelectronic devices 1 is connected to a second end of the energy storage module 4, and the energy storage module 4 includes an energy storage capacitor C. Specifically, the photoelectric devices 1 in the area 11a after series-parallel connection are connected in parallel with the photoelectric devices 1 in the area 11b after series-parallel connection, the signal transmission line D1a connected to the photoelectric devices 1 in the first column in the area 11a is connected to the first end of the energy storage module 4, the signal transmission line Dna connected to the photoelectric devices 1 in the last column is connected to the second end of the energy storage module 4, the signal transmission line D1b connected to the photoelectric devices 1 in the first column in the area 11b is connected to the first end of the energy storage module 4, the signal transmission line Dnb connected to the photoelectric devices 1 in the last column is connected to the second end of the energy storage module 4, and the photoelectric devices 1 in the area 11a and the area 11b convert incident light of sunlight on the display panel 10 into electric energy and store the electric energy in the energy storage capacitor C of the energy storage module 4 to charge the battery of the display device.
The embodiment of the invention also provides a driving method of the display panel, which can be used for driving the display panel provided by the embodiment of the invention to work. As shown in fig. 1, the display panel 10 includes: a plurality of photoelectric devices 1, a switching module 2, a plurality of first scan driving lines S extending in a first direction L1, and a plurality of signal transmission lines D extending in a second direction L2; the switch module 2 connects a plurality of photoelectric devices 1 in series and parallel in a photovoltaic power generation mode; the switch module 2 connects the plurality of photoelectric devices 1 to the signal transmission line D and the first scanning driving line S in the fingerprint recognition mode; wherein, a row of photoelectric devices 1 is connected with a first scanning driving line S, and a column of photoelectric devices 1 is connected with a signal transmission line D; the photoelectric devices 1 are arranged in a row direction parallel to the first direction L1 and in a column direction parallel to the second direction L2; or the photoelectric devices 1 are arranged in a row direction parallel to the second direction L2, in a column direction parallel to the first direction L1, and in a first direction L1 intersecting the second direction L2.
Fig. 11 is a flowchart illustrating a driving method of a display panel according to an embodiment of the present invention. As shown in fig. 11, the driving method of the display panel specifically includes:
and S110, connecting a plurality of photoelectric devices in series and parallel through a switch module in a photovoltaic power generation mode.
Referring to fig. 1, in the photovoltaic power generation mode, a control signal may be output to the switch module 2, each row of the optoelectronic devices 1 is connected in series through the first scan driving line S connected to the row of the optoelectronic devices 1 by the switch module 2, for example, each row of the optoelectronic devices 1 is connected in series through the first scan driving line S1-Sn, each row of the optoelectronic devices 1 connected in series is connected in parallel through the signal transmission line D1 and the signal transmission line Dn at the head and tail ends, the optoelectronic devices 1 connected in series and parallel convert the light energy irradiated by the display panel 10 into electric energy for storage, and the battery in the display device provided with the display panel 10 is charged to realize the charging of the display panel 10. Illustratively, the number of the photoelectric devices 1 connected in series in each row can be set through the switch module 2, so as to control the output voltage of the photoelectric devices 1 in each row, and the number of the rows of the photoelectric devices 1 connected in parallel is set, so as to control the output current of the photoelectric devices 1 connected in series and parallel.
And S120, connecting the plurality of photoelectric devices to a signal transmission line through a switch module in a fingerprint identification or sign detection mode.
And S130, connecting the plurality of photoelectric devices to a first scanning driving line through a switch module.
Referring to fig. 2, the control signal may be output to the switch module 2, and the switch module 2 may be controlled to be turned on according to the scan driving signal output to each row of the switch module 2 by the first scan driving line S, so as to connect each of the optoelectronic devices 1 to the signal transmission line D, and output the fingerprint identification signal through the signal transmission line D. For example, in the first stage, the scanning driving signal output by the first scanning driving line S1 controls the switch modules 2 in the first row to be turned on to enable the optoelectronic devices 1 in the first row to output the fingerprint identification signal through the signal transmission lines D respectively connected thereto, in the second stage, the scanning driving signal output by the first scanning driving line S2 controls the switch modules 2 in the second row to be turned on to enable the optoelectronic devices 1 in the second row to output the fingerprint identification signal through the signal transmission lines D respectively connected thereto, and so on, each stage only controls the optoelectronic devices 1 in one row to output the fingerprint identification signal, so that the optoelectronic devices 1 in the whole display panel 10 independently output the fingerprint identification signal. The driving method of the display panel provided by the novel embodiment of the present invention is used for driving the display panel described in the above embodiment to work, and therefore, the driving method of the display panel provided by the novel embodiment of the present invention has the above beneficial effects, and is not described herein again.
Referring to fig. 5, the switch module 2 includes: a plurality of first timing switches M1, a plurality of second timing switches M2, and a plurality of first control switches T1; a plurality of first timing switches M1 are connected in series on each first scanning driving line S, and at least some of the photoelectric devices 1 in a row are respectively connected to one first timing switch M1 on one first scanning driving line S; at least part of the signal transmission lines D are connected with a plurality of second timing switches M2, at least part of the columns of the photoelectric devices 1 are respectively connected to one signal transmission line D through one second timing switch M2, the first end of the photoelectric device 1 in the first column is connected to one signal transmission line D, and the second end of the photoelectric device 1 in the last column is connected to one signal transmission line D; the first terminals of at least some of the photovoltaic devices 1 in a row are connected to the second terminals of the adjacent photovoltaic devices 1 by means of a first control switch T1; further includes a plurality of first switching signal lines G1 extending in the first direction L1 and a plurality of second switching signal lines G2 extending in the second direction L2; the first timing switch M1 and the second timing switch M2 connected to the same row of the optoelectronic devices 1 are respectively connected to the same first switching signal line G1 through respective control terminals, and the signal input terminal of each first switching signal line G1 is electrically connected to each other; the control terminals of the first control switches T1 connected to the same column of the photoelectric devices 1 are connected to the same second switching signal line G2, and the signal input terminals of each second switching signal line G2 are electrically connected to each other;
optionally, in the photovoltaic power generation mode, connecting the plurality of photovoltaic devices in series-parallel by the switch module includes: and controlling the first control switch to be conducted according to the second switching signal. Specifically, with reference to fig. 5 to 7, at a stage T1, the first switching signal G1 is a low level signal, the second switching signal G2 is a high level signal, the optoelectronic device 1 in the display panel 10 is in a photovoltaic power generation mode, the second switching signal G2 controls the first control switch T1 to be turned on, the first timing switch M1 and the second timing switch M2 are turned off, each row of the optoelectronic devices 1 is connected in series and then connected in parallel, and the optoelectronic device 1 converts light energy received by the display panel 10 into electrical energy to be stored and generates power for the display panel 10.
Optionally, in the fingerprint recognition mode or the physical sign detection (taking the fingerprint recognition mode as an example for illustration), connecting the plurality of optoelectronic devices to the signal transmission line and the first scan driving line through the switch module includes: the first timing switch M1 and the second timing switch M2 are controlled to be turned on according to the first switching signal S1, and the timing at which each row of the first timing switch M1 is turned on is controlled according to the scan driving signal. Specifically, with reference to fig. 5-7, in the stage t21-t23, the first switching signal G1 is a high level signal, the second switching signal G2 is a low level signal, the optoelectronic devices 1 in the display panel 10 are in the fingerprint identification mode, in the stage t21, the first switching signal G1 and the scan driving signal S1 are simultaneously high level signals, the first switching signal G1 writes a voltage to the control terminal G1 of the first timing switch M1 and the control terminal G2 of the second timing switch M2, the scan driving signal S1 writes a voltage to the first terminal S1 of the first timing switch M1 connected to the optoelectronic devices 1 in the first row, the first timing switch M1 in the row is turned on, the fingerprint identification signal generated by each optoelectronic device 1 performing fingerprint identification is output to the second terminal S2 of the second timing switch M2, the second timing switch M2 is turned on, the optoelectronic devices in the first row output the fingerprint identification signals through the transmission lines D1-D5 respectively connected to the optoelectronic devices D5, similarly, at the stage t22, the optoelectronic devices 1 in the second row simultaneously output the fingerprint identification signals through the connected second timing switch M2 and the signal transmission lines D1-D5, respectively, and at the stage t23, the optoelectronic devices 1 in the third row simultaneously output the fingerprint identification signals through the connected second timing switch M2 and the signal transmission lines D1-D5, respectively. Through the control of the conduction time sequence of the first control switch T1, the first time sequence switch M1 and the second time sequence switch M2, the display panel 10 achieves photovoltaic power generation and fingerprint identification in stages, the standby time of the display device is prolonged, and the versatility of the display device is increased.
The embodiment of the invention also provides a display device which comprises the display panel provided by the embodiment of the invention. Fig. 12 is a schematic structural diagram of a display device according to an embodiment of the present invention. As shown in fig. 12, the display device further includes a first timing driving circuit 5 and a second timing driving circuit 6; the first timing driving circuit 5 includes a plurality of scan driving signal output terminals b, and the first scan driving line S is connected to the scan driving signal output terminals b; the second timing driving circuit 6 includes a plurality of signal input terminals C to which the signal transmission lines D are connected.
Specifically, the first timing circuit 5 outputs the scan driving signal to the first scan driving lines S1-Sn connected to the respective rows of the electro-optical devices 1 through the scan driving signal output terminals b 1-bn. When the display panel 10 is in the fingerprint identification mode, the photoelectric devices 1 in each row respectively output fingerprint identification signals to the second timing driving circuit 6 through the connected signal transmission lines D1-Dm and the signal input terminals C1-Cm of the second timing driving circuit 6, and the second timing driving circuit 6 can transmit the received fingerprint identification signals to the outside, and determine whether the fingerprint identification signals match with the fingerprint information of a user, so as to realize fingerprint identification. The display device provided by the novel embodiment of the invention comprises the display panel described in the above embodiment, so that the display device has the above beneficial effects, and details are not repeated herein.
Fig. 13 is a schematic structural diagram of another display device according to an embodiment of the present invention. Optionally, as shown in fig. 13, the display device further includes a signal conversion module 7 and a signal processing module 8, and the second timing driving circuit 6, the signal conversion module 7 and the signal processing module 8 are electrically connected in sequence; the second timing driving circuit 6 outputs the received signal to the signal conversion module 7 for signal conversion, and processes the converted signal through the signal processing module 8. Specifically, when display panel 10 is in the fingerprint identification mode, photoelectric device 1 exports the fingerprint identification signal to second time sequence drive circuit 6 through the signal transmission line D who connects, second time sequence drive circuit 6 can export the fingerprint identification signal to signal conversion module 7, signal conversion module 7 can convert the fingerprint identification signal of the human body reverberation of analog signal form into the fingerprint identification signal of digital signal form and export to signal processing module 8, signal processing module 8 can judge whether current fingerprint matches the user's fingerprint according to the fingerprint identification signal of the digital signal form received, realize fingerprint identification.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (15)

1. A display panel, comprising: the photoelectric conversion device comprises a plurality of photoelectric devices, a switch module, a plurality of first scanning driving lines extending along a first direction and a plurality of signal transmission lines extending along a second direction;
the switch module connects a plurality of the photoelectric devices in series and parallel in a photovoltaic power generation mode;
the switch module connects a plurality of photoelectric devices to the signal transmission line and the first scanning driving line in a fingerprint identification or sign detection mode; wherein one row of said optoelectronic devices is connected to one of said first scan drive lines, and one column of said optoelectronic devices is connected to one of said signal transmission lines; the row direction of the photoelectric devices is parallel to the first direction, and the column direction of the photoelectric devices is parallel to the second direction; or the row direction of the photoelectric devices is parallel to the second direction, the column direction of the photoelectric devices is parallel to the first direction, and the first direction is crossed with the second direction.
2. The display panel according to claim 1, further comprising a light emitting device, wherein the photoelectric device is alternately disposed with an adjacent light emitting device.
3. The display panel according to claim 1, wherein the switch module comprises a plurality of first timing switches, a plurality of second timing switches, and a plurality of first control switches;
a plurality of first timing switches are connected in series on each first scanning driving line, and at least part of the photoelectric devices in one row are respectively connected to one first timing switch on one first scanning driving line;
at least some of the rows of the optoelectronic devices are connected to one of the signal transmission lines through one of the second timing switches, respectively, a first end of the optoelectronic device in a first row is connected to one of the signal transmission lines, and a second end of the optoelectronic device in a last row is connected to one of the signal transmission lines;
the first terminals of at least some of the optoelectronic devices in a row are connected to the second terminal of an adjacent said optoelectronic device by said first control switch.
4. The display panel according to claim 3, further comprising a plurality of first switching signal lines extending in the first direction and a plurality of second switching signal lines extending in the second direction;
the first time sequence switch and the second time sequence switch which are connected with the photoelectric device on the same row are respectively connected with the same first switching signal line through respective control ends, and the signal input end of each first switching signal line is mutually and electrically connected;
and the control end of the first control switch connected with the photoelectric device on the same column is connected to the same second switching signal line, and the signal input end of each second switching signal line is electrically connected with each other.
5. The display panel according to claim 4, wherein a second terminal of a first timing switch connected in series to one of the first scan driving lines is connected to a first terminal of an adjacent first timing switch;
the second terminals of at least some of the optoelectronic devices in a row are connected to the second terminal of the first timing switch and the first terminal of the last of the optoelectronic devices is connected to the first terminal of the first timing switch.
6. The display panel according to claim 5, wherein a first terminal of the second timing switch is connected to the signal transmission line, and a second terminal is connected to a first terminal of the optoelectronic device.
7. The display panel according to claim 6, wherein a first end of the first control switch is connected between the corresponding one of the photoelectric devices and the first scan driving line to which the adjacent one of the photoelectric devices is connected, and a second end is connected to a first end of the photoelectric device.
8. The display panel of claim 1, further comprising an energy storage module, wherein the signal transmission line connected to the first column of the optoelectronic devices is connected to a first end of the energy storage module, and the signal transmission line connected to the last column of the optoelectronic devices is connected to a second end of the energy storage module, and wherein the energy storage module comprises an energy storage capacitor.
9. The display panel according to claim 1, wherein a plurality of the photoelectric devices in the display panel form a plurality of regions, and the photoelectric devices in the same row in each of the regions are connected to one of the first scan driving lines.
10. The display panel according to claim 9, wherein a first column of the electro-optical devices in each of the regions is connected to a first column of the electro-optical devices in an adjacent one of the regions by a switch, and a last column of the electro-optical devices in each of the regions is connected to a last column of the electro-optical devices in an adjacent one of the regions by a switch.
11. The display panel of claim 1, wherein the optoelectronic device comprises at least one of an organic optoelectronic device, a silicon-based optoelectronic device, and a thin film optoelectronic device.
12. A driving method of a display panel, the display panel comprising: the photoelectric conversion device comprises a plurality of photoelectric devices, a switch module, a plurality of first scanning driving lines extending along a first direction and a plurality of signal transmission lines extending along a second direction; the switch module connects a plurality of the photoelectric devices in series and parallel in a photovoltaic power generation mode; the switch module connects a plurality of photoelectric devices to the signal transmission line and the first scanning driving line in a fingerprint identification mode; wherein one row of said optoelectronic devices is connected to one of said first scan drive lines, and one column of said optoelectronic devices is connected to one of said signal transmission lines; the row direction of the photoelectric devices is parallel to the first direction, and the column direction of the photoelectric devices is parallel to the second direction; or the row direction of the photoelectric devices is parallel to the second direction, the column direction of the photoelectric devices is parallel to the first direction, and the first direction is crossed with the second direction;
the driving method of the display panel includes:
in a photovoltaic power generation mode, connecting a plurality of the photoelectric devices in series and parallel through the switch module;
in a fingerprint identification or sign detection mode, the photoelectric devices are connected to the signal transmission line and the first scanning driving line through the switch module.
13. The method for driving a display panel according to claim 12, wherein the switch module comprises: a plurality of first timing switches, a plurality of second timing switches, and a plurality of first control switches; a plurality of first timing switches are connected in series on each first scanning driving line, and at least part of the photoelectric devices in one row are respectively connected to one first timing switch on one first scanning driving line; at least part of the signal transmission lines are connected with a plurality of second time sequence switches, at least part of the columns of the photoelectric devices are respectively connected to one signal transmission line through one second time sequence switch, the first end of the photoelectric device in the first column is connected to one signal transmission line, and the second end of the photoelectric device in the last column is connected to one signal transmission line; a first terminal of at least some of the optoelectronic devices in a row is connected to a second terminal of an adjacent said optoelectronic device by the first control switch; the first switching signal lines extend along the first direction and the second switching signal lines extend along the second direction; the first time sequence switch and the second time sequence switch which are connected with the photoelectric device on the same row are respectively connected with the same first switching signal line through respective control ends, and the signal input end of each first switching signal line is mutually and electrically connected; the control end of a first control switch connected with the photoelectric devices on the same column is connected to the same second switching signal line, and the signal input end of each second switching signal line is electrically connected with each other;
in a photovoltaic power generation mode, connecting a plurality of the optoelectronic devices in series-parallel by the switch module, comprising:
controlling the first control switch to be conducted according to the second switching signal;
in a fingerprint recognition mode, connecting a plurality of the photoelectric devices to the signal transmission line and the first scan driving line through the switch module, including:
and controlling the first time sequence switch and the second time sequence switch to be conducted according to the first switching signal, and controlling the conducting time sequence of the first time sequence switches of each row according to a scanning driving signal.
14. A display device comprising the display panel according to any one of claims 1 to 11, and further comprising a first timing driving circuit and a second timing driving circuit;
the first timing driving circuit comprises a plurality of scanning driving signal output ends, and the first scanning driving line is connected to the scanning driving signal output ends;
the second timing driving circuit includes a plurality of signal input terminals to which the signal transmission lines are connected.
15. The display device according to claim 14, further comprising a signal conversion module and a signal processing module, wherein the second timing driving circuit, the signal conversion module and the signal processing module are electrically connected in sequence;
the second time sequence driving circuit outputs the received signals to the signal conversion module for signal conversion, and the converted signals are processed through the signal processing module.
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