CN111951730B - Display device, electronic device, display control method, and storage medium - Google Patents
Display device, electronic device, display control method, and storage medium Download PDFInfo
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- CN111951730B CN111951730B CN202010848824.XA CN202010848824A CN111951730B CN 111951730 B CN111951730 B CN 111951730B CN 202010848824 A CN202010848824 A CN 202010848824A CN 111951730 B CN111951730 B CN 111951730B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
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- 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
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- 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
- G06V40/1365—Matching; Classification
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Abstract
The application discloses a display device, an electronic device, a display control method and a storage medium. Wherein the display device includes: the pixel driving circuit comprises a control circuit, M pixel units and a first driving circuit connected with N pixel units in the M pixel units; the N pixel units are arranged in a fingerprint identification area of the display device; m and N are integers greater than 0; the control circuit is used for sending an enabling signal to the first driving circuit when the fingerprint identification area detects a fingerprint unlocking operation; the first driving circuit is used for sending driving signals to the N pixel units after being enabled so as to enable the OLEDs in the N pixel units to be in a light-emitting state.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a display device, an electronic device, a display control method, and a storage medium.
Background
Optical fingerprint recognition technology is widely applied to electronic devices of Organic Light-Emitting Diode (OLED) displays. As shown in fig. 1, the optical fingerprint recognition principle of the OLED display electronic device is as follows: the OLED light-emitting device emits light and emits light through the upper glass of the display screen; after the emitted light meets the finger, part of the light is reflected and received by the optical fingerprint sensor; the optical fingerprint sensor converts different optical information carried by the finger valleys and ridges into fingerprint image information in a photoelectric conversion mode; the processor of the electronic device matches the converted fingerprint image information with fingerprint image information which is recorded (namely stored) in advance, and then fingerprint identification is achieved.
However, in the related art, the power consumption of the electronic device is high in the process of performing fingerprint unlocking based on the optical fingerprint identification principle.
Disclosure of Invention
In order to solve the related technical problem, embodiments of the present application provide a display device, an electronic device, a display control method, and a storage medium.
The technical scheme of the embodiment of the application is realized as follows:
an embodiment of the present application provides a display device, including: the pixel driving circuit comprises a control circuit, M pixel units and a first driving circuit connected with N pixel units in the M pixel units; the N pixel units are arranged in a fingerprint identification area of the display device; m and N are integers greater than 0; wherein the content of the first and second substances,
the control circuit is used for sending an enabling signal to the first driving circuit when the fingerprint identification area detects a fingerprint unlocking operation;
the first driving circuit is used for sending driving signals to the N pixel units after being enabled so as to enable the OLEDs in the N pixel units to be in a light-emitting state.
In the above solution, the first driving circuit includes a first data line driving circuit; the display device further includes a second driving circuit connected to each of the M pixel cells; the second drive circuit comprises a first grid line drive circuit;
the control circuit is used for sending a first enabling signal to the first data line driving circuit and sending a second enabling signal to the first grid line driving circuit when the fingerprint identification area detects a fingerprint unlocking operation;
the first data line driving circuit and the first gate line driving circuit are used for sending driving signals to the N pixel units after being enabled so as to enable the OLEDs in the N pixel units to be in a light-emitting state; wherein the content of the first and second substances,
under the combined action of the driving signal sent by the first data line driving circuit and the driving signal sent by the first gate line driving circuit, the switches in the N pixel units are turned on, so that the OLEDs in the N pixel units are in a light-emitting state.
In the above solution, the first data line driving circuit is configured to send a first driving signal to each of the N pixel units after being enabled; the first driving signal can enable the storage capacitor of the corresponding pixel unit in the N pixel units to store electric quantity;
the first grid line driving circuit is used for sending a second driving signal to each of the M pixel units after being enabled; the second driving signal can enable the first switch of the corresponding pixel unit in the M pixel units to be in a conducting state; the first switch under the conducting state enables the first driving signal to be input into the storage capacitor of the corresponding pixel unit in the N pixel units; wherein the content of the first and second substances,
the electric quantity stored by the storage capacitor of the corresponding pixel unit reaches a first threshold value, so that the second switch of the corresponding pixel unit is conducted; the second switch in the conducting state makes the OLED in the corresponding pixel unit in a light-emitting state.
In the above scheme, the first driving circuit includes a second gate line driving circuit; the display device further includes a second driving circuit connected to each of the M pixel cells; the second driving circuit includes a second data line driving circuit;
the control circuit is configured to send a third enable signal to the second data line driving circuit and send a fourth enable signal to the second gate line driving circuit when the fingerprint unlocking operation is detected in the fingerprint identification area;
the second data line driving circuit and the second gate line driving circuit are used for sending driving signals to the N pixel units after being enabled so as to enable the OLEDs in the N pixel units to be in a light-emitting state; wherein the content of the first and second substances,
under the combined action of the driving signal sent by the second data line driving circuit and the driving signal sent by the second gate line driving circuit, the switches in the N pixel units are turned on, so that the OLEDs in the N pixel units are in a light-emitting state.
In the foregoing solution, the second data line driving circuit is configured to send a third driving signal to each of the M pixel units after being enabled; the third driving signal can enable the storage capacitor of the corresponding pixel unit in the M pixel units to store electric quantity;
the second gate line driving circuit is used for sending a fourth driving signal to each pixel unit in the N pixel units after being enabled; the fourth driving signal can enable the first switch of the corresponding pixel unit in the N pixel units to be in a conducting state; the first switch in the conducting state enables the third driving signal to be input into the storage capacitor of the corresponding pixel unit in the N pixel units; wherein the content of the first and second substances,
the electric quantity stored by the storage capacitor of the corresponding pixel unit reaches a first threshold value, so that the second switch of the corresponding pixel unit is conducted; the second switch in the conducting state makes the OLED in the corresponding pixel unit in a light-emitting state.
In the above scheme, the switches in the N pixel units are Thin Film field effect transistors (TFTs).
An embodiment of the present application further provides an electronic device, including: a processor and the display device of any of the above aspects; wherein the content of the first and second substances,
the processor is used for sending a notification signal to the control circuit when the fingerprint identification area detects a fingerprint unlocking operation;
the control circuit is used for responding to the notification signal and sending an enabling signal to the first driving circuit.
In the above solution, the electronic device further includes:
the fingerprint sensor is used for collecting fingerprint information and sending the collected fingerprint information to the processor; the collected fingerprint information is generated based on light emitted by the OLED in the N pixel units in a light-emitting state;
the processor is further configured to match the acquired fingerprint information with the first fingerprint information, and determine whether to execute an unlocking operation according to a matching result.
The embodiment of the application also provides a control method, which comprises the following steps:
when a fingerprint unlocking operation is detected in a fingerprint identification area of a display device, sending an enabling signal to a first driving circuit of the display device so as to send driving signals to N pixel units in M pixel units included in the display device after the first driving circuit is enabled; the drive signal enables the OLED in the N pixel units to be in a light-emitting state; the N pixel units are arranged in the fingerprint identification area; m and N are integers greater than 0.
An embodiment of the present application further provides a storage medium, in which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the above method.
The display device, the electronic device, the display control method, and the storage medium provided in the embodiment of the present application, the display device includes: the pixel driving circuit comprises a control circuit, M pixel units and a first driving circuit connected with N pixel units in the M pixel units; the N pixel units are arranged in a fingerprint identification area of the display device; m and N are integers greater than 0; the control circuit is used for sending an enabling signal to the first driving circuit when the fingerprint identification area detects a fingerprint unlocking operation; the first driving circuit is used for sending driving signals to the N pixel units after being enabled so as to enable the OLEDs in the N pixel units to be in a light-emitting state. According to the scheme of the embodiment of the application, when fingerprint unlocking operation is detected, the N pixel units are driven to emit light through the first driving circuit which is independently connected with the N pixel units arranged in the fingerprint identification area, and the fingerprint identification area of the display device is only lightened, so that the power consumption of the electronic device in the fingerprint unlocking process can be reduced, the cruising ability of the electronic device is improved, and the user experience is improved.
Drawings
FIG. 1 is a schematic diagram illustrating an optical fingerprint recognition principle of an OLED display electronic device in the related art;
FIG. 2 is a schematic diagram of a related art OLED pixel unit;
FIG. 3 is a schematic structural diagram of an electronic device of a related art OLED display;
FIG. 4 is a schematic structural diagram of a display device according to an embodiment of the present application;
FIG. 5 is a first schematic structural diagram of an electronic device according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solution of the present application is further described in detail below with reference to the accompanying drawings and embodiments.
Generally, an electronic device of an OLED display is provided with a plurality of OLED pixel units (english can be expressed as pixels), and each OLED pixel unit includes two TFTs (TFT 1 and TFT2), and a storage capacitor C as shown in fig. 2stAnd an OLED. Based on the structure of the OLED pixel unit shown in fig. 2, the principle of light emission of the OLED pixel unit is as follows: an anode signal ELVDD and a cathode signal ELVSS transmitted in the OLED pixel unit respectively provide an anode voltage and a cathode voltage for the OLED; when a row scanning signal is transmitted to a gate (gate), the TFT1 is turned on, and the turned-on TFT1 enables a data signal transmitted to a data line to be written into the gatest(ii) a At CstWhen the amount of power reaches the preset threshold, the TFT2 is turned on, and after the TFT2 is turned on, the ELVDD supplies power to the OLED, so that the OLED emits light.
Based on the OLED pixel cell shown in fig. 2, as shown in fig. 3, the electronic device of the OLED display may include: the pixel array comprises a processor, a display driver Integrated Circuit (IC), a row driver unit (which may also be referred to as a gate line driver Circuit in the following description), a data driver unit (which may also be referred to as a data line driver Circuit in the following description), a fingerprint sensor chip (i.e., an optical fingerprint sensor), and X × Y (X represents the number of rows, Y represents the number of columns, and X and Y are integers greater than 0) OLED pixel units; in this case, some of the X × Y pixel units are disposed in the fingerprint identification region (a region in which other pixel units than the pixel unit disposed in the fingerprint identification region are disposed in the X × Y pixel units may be referred to as a non-fingerprint identification region). Based on the structure of the OLED display electronic device shown in fig. 3, the operating principle of the OLED display electronic device is as follows: the processor drives the display drive IC to work through instructions, so that a display screen consisting of X, Y pixel units works normally, and meanwhile, the display drive IC synchronously feeds back the working state of the display screen to the processor; when the display driving IC works, the display driving IC respectively enables the row driving unit and the data driving unit,to control the turn-on of the TFT1 of each row of pixel cells and to control the writing of data signals to C of each column of pixel cellsstSo that the display screen composed of the X-Y pixel units can work normally, and the whole OLED display electronic device can work normally.
Based on the structure of the OLED display electronic device shown in fig. 3, the optical fingerprint unlocking principle of the OLED display electronic device is as follows: when the processor detects the operation of pressing the fingerprint identification area by a finger through a detection element (such as a pressing sensor) of the OLED display device, the processor sends a notification signal to the display driving IC, the display driving IC responds to the received notification signal, firstly uses a preset algorithm (denoted as a first algorithm in the following description) to control the X pixel units and the Y pixel units to emit light through the line driving unit and the data driving unit, namely, lights the whole display screen consisting of the X pixel units and the Y pixel units, and then uses another preset algorithm (denoted as a second algorithm in the following description) to control the pixel units arranged in the non-fingerprint identification area in the X pixel units and the Y pixel units to reduce the brightness so that the brightness of the pixel units arranged in the fingerprint identification area is higher than that of the pixel units arranged in the non-fingerprint identification area, therefore, the fingerprint sensing chip can identify the fingerprint image information to be verified in the received optical information and send the fingerprint image information to the processor, the processor matches the fingerprint image information to be verified with the prestored fingerprint image information, and then optical fingerprint unlocking is achieved according to the matching result.
However, in the process of controlling the X × Y pixel units to emit light first and then controlling the pixel units arranged in the non-fingerprint identification region among the X × Y pixel units to reduce the brightness so that the brightness of the pixel units arranged in the fingerprint identification region is higher than that of the pixel units arranged in the non-fingerprint identification region, on one hand, the power consumption of the electronic device is higher in the fingerprint unlocking process; on the other hand, the problem of screen flashing caused by mismatching of the timing nodes of the first algorithm and the timing nodes of the second algorithm may occur, and the user experience is poor.
Based on this, in various embodiments of the present application, when a fingerprint unlocking operation is detected, the N pixel units are driven to emit light by the first driving circuit separately connected to the N pixel units disposed in the fingerprint identification area, and only the fingerprint identification area of the display device is lit, so that power consumption of the electronic device during a fingerprint unlocking process can be reduced, and cruising ability of the electronic device can be improved; moreover, the brightness of the pixel unit arranged in the fingerprint identification area is higher than that of the pixel unit arranged in the non-fingerprint identification area without the first algorithm and the second algorithm, the screen flashing problem caused by mismatching of the time sequence node of the first algorithm and the time sequence node of the second algorithm is avoided, and the user experience can be improved.
An embodiment of the present application provides a display device, as shown in fig. 4, the display device includes: a control circuit 401, M pixel units 402, and a first drive circuit 403 connected to N pixel units 402 of the M pixel units 402; the N pixel units 402 are arranged in a fingerprint identification area of the display device; m and N are integers greater than 0; wherein the content of the first and second substances,
the control circuit 401 is configured to send an enable signal to the first driving circuit 403 when a fingerprint unlocking operation is detected in the fingerprint identification area;
the first driving circuit 403 is configured to send a driving signal to the N pixel units 402 after being enabled, so that the OLEDs in the N pixel units 402 are in a light emitting state.
It should be noted that the display device provided in the embodiment of the present application is an OLED display device (also referred to as an OLED display panel, an OLED display screen, or the like), and may be disposed in any electronic device to form an OLED display, such as a Personal Computer (PC), a mobile phone, or the like; the PC may include a desktop computer, a notebook computer, a tablet computer, a vehicle-mounted computer, and the like.
In practical applications, the structure of the pixel unit 402 can adopt the structure shown in fig. 2. The first driving circuit 403 may include a gate line driving circuit and a data line driving circuit, and under a combined action of a driving signal output by the gate line driving circuit and a driving signal output by the data line driving circuit, the switch of each pixel unit 402 of the N pixel units 402 is turned on, so that the OLED of each pixel unit 402 of the N pixel units 402 is in a light emitting state. Here, the switch of the pixel unit 402 may be a TFT.
In practical applications, in order to ensure normal use of the display device, the display device further needs to include a second driving circuit connected to each pixel unit 402 of the M pixel units 402; the second driving circuit may also include a gate line driving circuit (i.e., the row driving unit in the structure shown in fig. 3) and a data line driving circuit (i.e., the data driving unit in the structure shown in fig. 3), and under the combined action of the driving signal output by the gate line driving circuit and the driving signal output by the data line driving circuit, the switch in each pixel unit 402 of the M pixel units 402 is turned on, so that the OLED in each pixel unit 402 of the M pixel units 402 is in a light-emitting state.
In practical applications, in order to save the cost of the electronic device, the first driving circuit 403 may only include a data line driving circuit, and when it is necessary to make the OLEDs in the N pixel units 402 emit light, the control circuit 401 may enable the data line driving circuit included in the first driving circuit 403 and the gate line driving circuit included in the second driving circuit, and under the combined action of the driving signal output by the data line driving circuit included in the first driving circuit 403 and the driving signal output by the gate line driving circuit included in the second driving circuit, the switch in each pixel unit 402 in the N pixel units 402 is turned on, so that the OLED in each pixel unit 402 in the N pixel units 402 is in a light emitting state; therefore, the power consumption of the electronic equipment in the fingerprint unlocking process can be reduced on the premise of saving the cost of the electronic equipment, the cruising ability of the electronic equipment is improved, and the user experience is further improved.
Based on this, in one embodiment, the first driving circuit 403 includes a first data line driving circuit; the display device further comprises a second drive circuit connected to each pixel unit 402 of the M pixel units 402; the second drive circuit comprises a first grid line drive circuit;
the control circuit 401 is configured to send a first enable signal to the first data line driving circuit and send a second enable signal to the first gate line driving circuit when a fingerprint unlocking operation is detected in the fingerprint identification area;
the first data line driving circuit and the first gate line driving circuit are configured to send a driving signal to the N pixel units 402 after being enabled, so that the OLEDs in the N pixel units 402 are in a light emitting state; wherein the content of the first and second substances,
under the combined action of the driving signal sent by the first data line driving circuit and the driving signal sent by the first gate line driving circuit, the switches in the N pixel units 402 are turned on, so that the OLEDs in the N pixel units are in a light-emitting state.
In practical application, the first gate line driving circuit sends a driving signal to each pixel unit 402 of the M pixel units 402, but the other pixel units 402 except the N pixel units 402 in the M pixel units 402 do not receive the driving signal sent by the first data line driving circuit, so that the OLEDs in the other pixel units 402 except the N pixel units 402 in the M pixel units 402 are in a non-light-emitting state in the fingerprint unlocking process.
In an embodiment, the first data line driving circuit is specifically configured to send a first driving signal to each pixel unit 402 of the N pixel units 402 after being enabled; the first driving signal enables the storage capacitor of the corresponding pixel unit 402 of the N pixel units 402 to store the electric quantity;
accordingly, the first gate line driving circuit is specifically configured to send a second driving signal to each pixel unit 402 of the M pixel units 402 after being enabled; the second driving signal is capable of causing a first switch of a corresponding pixel unit 402 of the M pixel units 402 to be in a conducting state; the first switch in the on state enables the first driving signal to be input into the storage capacitor of the corresponding pixel unit 402 in the N pixel units 402; wherein the content of the first and second substances,
the amount of power stored by the storage capacitor of the corresponding pixel unit 402 reaches a first threshold value, causing the second switch of the corresponding pixel unit 402 to be turned on; the second switch in the on state puts the OLED in the corresponding pixel cell 402 in a light emitting state.
In practical applications, the first threshold refers to a threshold voltage at which the second switch (i.e., the TFT2 in the structure shown in fig. 2) is turned on.
In practical application, in order to save the cost of the electronic device, the first driving circuit 403 may also only include a gate line driving circuit, when it is necessary to make the OLEDs in the N pixel units 402 emit light, the control circuit 401 may enable the gate line driving circuit included in the first driving circuit 403 and the data line driving circuit included in the second driving circuit, and under the combined action of the driving signal output by the gate line driving circuit included in the first driving circuit 403 and the driving signal output by the data line driving circuit included in the second driving circuit, the switch in each pixel unit 402 in the N pixel units 402 is turned on, so that the OLED in each pixel unit 402 in the N pixel units 402 is in a light emitting state; therefore, the power consumption of the electronic equipment in the fingerprint unlocking process can be reduced on the premise of saving the cost of the electronic equipment, the cruising ability of the electronic equipment is improved, and the user experience is further improved.
Based on this, in one embodiment, the first driving circuit includes a second gate line driving circuit; the second driving circuit includes a second data line driving circuit;
the control circuit 401 is configured to send a third enable signal to the second data line driving circuit and send a fourth enable signal to the second gate line driving circuit when the fingerprint unlocking operation is detected in the fingerprint identification area;
the second data line driving circuit and the second gate line driving circuit are configured to send driving signals to the N pixel units 402 after being enabled, so that the OLEDs in the N pixel units 402 are in a light emitting state; wherein the content of the first and second substances,
under the combined action of the driving signal sent by the second data line driving circuit and the driving signal sent by the second gate line driving circuit, the switches in the N pixel units 402 are turned on, so that the OLEDs in the N pixel units are in a light-emitting state.
In practical applications, the second data line driving circuit sends a driving signal to each pixel unit 402 of the M pixel units 402, but the other pixel units 402 except the N pixel units 402 in the M pixel units 402 do not receive the driving signal sent by the second gate line driving circuit, so that the OLEDs in the other pixel units 402 except the N pixel units 402 in the M pixel units 402 are in a non-light-emitting state during the fingerprint unlocking process.
In an embodiment, the second data line driving circuit is specifically configured to send a third driving signal to each pixel unit 402 of the M pixel units 402 after being enabled; the third driving signal enables the storage capacitor of the corresponding pixel unit 402 of the M pixel units 402 to store the electric quantity;
accordingly, the second gate line driving circuit is specifically configured to send a fourth driving signal to each pixel unit 402 of the N pixel units 402 after being enabled; the fourth drive signal is capable of causing the first switch of a corresponding pixel unit 402 of the N pixel units 402 to be in a conducting state; the first switch in the on state enables the third driving signal to be input into the storage capacitor of the corresponding pixel unit 402 in the N pixel units 402; wherein the content of the first and second substances,
the amount of power stored by the storage capacitor of the corresponding pixel unit 402 reaches a first threshold value, causing the second switch of the corresponding pixel unit 402 to be turned on; the second switch in the on state puts the OLED in the corresponding pixel cell 402 in a light emitting state.
Based on the foregoing display device embodiment, an embodiment of the present application further provides an electronic device, as shown in fig. 5, an electronic device 50 includes: a processor 51 and a display device 52; the display device 52 is the display device described in any of the above display device embodiments; wherein the content of the first and second substances,
the processor 51 is configured to send a notification signal to the control circuit 401 when a fingerprint unlocking operation is detected in the fingerprint identification area;
the control circuit 401 is configured to send an enable signal to the first driving circuit in response to the notification signal.
Here, the control circuit 401 may determine that a fingerprint unlock operation is detected in the fingerprint identification area when receiving the notification signal transmitted from the processor 51.
In practice, the processor 51 may detect the fingerprint unlocking operation based on a detection element (e.g., a pressing sensor).
In an embodiment, the electronic device 50 may further include:
a fingerprint sensor for collecting fingerprint information and transmitting the collected fingerprint information to the processor 51; the collected fingerprint information is generated based on light emitted by the OLEDs in the N pixel units 402 in a light-emitting state;
the processor 51 is further configured to match the acquired fingerprint information with the first fingerprint information, and determine whether to execute an unlocking operation according to a matching result.
In practical application, the fingerprint sensor is an optical fingerprint sensor; the first fingerprint information may be set as desired.
In practical application, the electronic device 50 provided in the embodiment of the present application may be specifically embodied as the structure shown in fig. 6, and as shown in fig. 6, the electronic device may include: a processor 601 (i.e., the processor 51), a display driving IC 602 (i.e., the control circuit 401), a row driving unit 603 (i.e., the first gate line driving circuit), a data driving unit 604, a fingerprint sensing chip 605 (i.e., the fingerprint sensor), and X × Y (X × Y ═ M) pixel units (i.e., the pixel units 402); the data driving unit 604 includes a module one 6041 (i.e., the second data line driving circuit) and a module two 6042 (i.e., the first data line driving circuit); the second module 6042 forms the first driving circuit 403; the row driving unit 603 and the module one 6041 form the second driving circuit; the second block 6042 is separately connected to the pixel units (i.e., the N pixel units 402) in the fingerprint identification area among the X × Y pixel units through the newly added data lines. The process of fingerprint unlocking based on the electronic device shown in fig. 6 may include the following steps:
step 1: the display drive IC 602 controls the row drive unit 603 based on the timing to sequentially turn on the switching device (i.e., the TFT1) in each of the X × Y pixel units so that the data signal (i.e., the first drive signal) transmitted through the data signal line can be normally written into the storage capacitance in the corresponding pixel unit;
step 2: when the processor 601 recognizes (i.e., detects) the user fingerprint unlocking operation in the fingerprint recognition area by the detection element (e.g., the pressing sensor), the processor 601 notifies the display driver IC 602 to call (i.e., enable) the module two 6042;
and step 3: a second module 6042 controls a data signal (i.e. the first driving signal) to be written into a storage capacitor arranged in the pixel unit of the fingerprint identification area through a data line which is separately connected with the pixel unit arranged in the fingerprint identification area, so that the OLED arranged in the pixel unit of the fingerprint identification area is in a light-emitting state, that is, the lighting of the fingerprint identification area is realized;
and 4, step 4: the light emitted by the pixel unit arranged in the fingerprint identification area is reflected by a finger to obtain reflected light carrying fingerprint information; the fingerprint sensing chip 605 receives the reflected light carrying the fingerprint information, obtains the fingerprint image information to be verified in a photoelectric conversion processing mode, and sends the obtained fingerprint image information to be verified to the processor 601;
and 5: the processor 601 matches the fingerprint image information to be verified with preset fingerprint information (i.e. the first fingerprint information), and determines whether to execute an unlocking operation according to a matching result, so as to complete an optical fingerprint unlocking process.
Here, although the switching devices in the pixel units other than the pixel unit disposed in the fingerprint identification region among the X × Y pixel units are also in the on state by the row driving unit 603, since these pixel units are not connected to the block two 6042 and cannot receive the data signal transmitted by the block two 6042, the pixel units other than the pixel unit disposed in the fingerprint identification region among the X × Y pixel units are in the non-emission state; therefore, only the fingerprint identification area of the electronic equipment is lightened, the power consumption of the electronic equipment in the fingerprint unlocking process can be reduced, and the cruising ability of the electronic equipment is improved; moreover, the brightness of the pixel unit arranged in the fingerprint identification area is higher than that of the pixel unit arranged in the non-fingerprint identification area without the first algorithm and the second algorithm, the screen flashing problem caused by mismatching of the time sequence node of the first algorithm and the time sequence node of the second algorithm is avoided, and the user experience can be improved.
In addition, it should be noted that specific implementation processes of step 1 to step 5 are described in detail in the foregoing display device embodiment and electronic device embodiment, and are not described again here.
In practical application, the electronic device 50 provided in the embodiment of the present application may be further embodied as the structure shown in fig. 7, and as shown in fig. 7, the electronic device may include: a processor 701 (i.e., the processor 51), a display driving IC 702 (i.e., the control circuit 401), a row driving unit 703, a data driving unit 704 (i.e., the second data line driving circuit), a fingerprint sensing chip 705 (i.e., the fingerprint sensor), and X × Y (X × Y ═ M) pixel units (i.e., the pixel units 402); the row driving unit 703 includes a first module 7031 (i.e., the first gate line driving circuit) and a second module 7032 (i.e., the second gate line driving circuit); the second module 7032 forms the first driving circuit 403; the data driving unit 704 and the module one 7031 form the second driving circuit; the second module 7032 is separately connected to the pixel units (i.e., the N pixel units 402) in the fingerprint identification region among the X × Y pixel units through the newly added gate lines (also referred to as scan lines). The process of fingerprint unlocking based on the electronic device shown in fig. 7 may include the following steps:
step a: when the processor 701 recognizes (i.e., detects) the user fingerprint unlocking operation in the fingerprint recognition area through the detection element (e.g., sensor), the processor 701 notifies the display driver IC 702 to call (i.e., enable) the second module 7032 and the data driver unit 704;
step b: the second control module 7032 sequentially turns on the switching device (i.e., TFT1) in each of the pixel cells disposed in the fingerprint identification region through the gate lines individually connected to the pixel cells disposed in the fingerprint identification region based on the timing, so that the data signal (i.e., the third driving signal) transmitted through the data signal line can be normally written into the storage capacitor in the corresponding pixel cell;
step c: the data driving unit 704 writes a data signal (i.e., the third driving signal) into the storage capacitor disposed in the pixel unit of the fingerprint identification area through the data line, so that the OLED disposed in the pixel unit of the fingerprint identification area is in a light-emitting state, i.e., the lighting of the fingerprint identification area is realized;
step d: the light emitted by the pixel unit arranged in the fingerprint identification area is reflected by a finger to obtain reflected light carrying fingerprint information; the fingerprint sensing chip 705 receives reflected light carrying fingerprint information, obtains fingerprint image information to be verified in a photoelectric conversion processing mode, and sends the obtained fingerprint image information to be verified to the processor 701;
step e: the processor 701 matches the fingerprint image information to be verified with preset fingerprint information (i.e., the first fingerprint information), and determines whether to execute an unlocking operation according to a matching result, so as to complete an optical fingerprint unlocking process.
Here, although the data driving unit 704 also sends data signals to the other pixel units except for the pixel unit disposed in the fingerprint identification area among the X × Y pixel units, since the pixel units are not connected to the module two 7032, the switching device cannot be turned on under the control of the module two 7032, so that the data signals sent by the data driving unit 704 cannot be written into the storage capacitors of the other pixel units except for the pixel unit disposed in the fingerprint identification area among the X × Y pixel units, that is, the other pixel units except for the pixel unit disposed in the fingerprint identification area among the X × Y pixel units are in a non-light-emitting state; therefore, only the fingerprint identification area of the electronic equipment is lightened, the power consumption of the electronic equipment in the fingerprint unlocking process can be reduced, and the cruising ability of the electronic equipment is improved; moreover, the brightness of the pixel unit arranged in the fingerprint identification area is higher than that of the pixel unit arranged in the non-fingerprint identification area without the first algorithm and the second algorithm, the screen flashing problem caused by mismatching of the time sequence node of the first algorithm and the time sequence node of the second algorithm is avoided, and the user experience can be improved.
In addition, it should be noted that specific implementation processes of steps a to e are described in detail in the foregoing display device embodiment and electronic device embodiment, and are not described herein again.
Based on the foregoing display device embodiment, an embodiment of the present application further provides a display control method, including the following steps:
when a fingerprint unlocking operation is detected in a fingerprint identification area of a display device, sending an enabling signal to a first driving circuit of the display device so as to send driving signals to N pixel units in M pixel units included in the display device after the first driving circuit is enabled;
here, the driving signal makes the OLEDs in the N pixel units in a light emitting state; the N pixel units are arranged in the fingerprint identification area; m and N are integers greater than 0.
In one embodiment, the first driving circuit includes a first data line driving circuit; the display device further includes a second driving circuit connected to each of the M pixel cells; the second drive circuit comprises a first grid line drive circuit; the method further comprises the following steps:
when a fingerprint unlocking operation is detected in the fingerprint identification area, sending a first enabling signal to the first data line driving circuit, and sending a second enabling signal to the first grid line driving circuit, so as to send driving signals to the N pixel units after the first data line driving circuit and the first grid line driving circuit are enabled; wherein the content of the first and second substances,
under the combined action of the driving signal sent by the first data line driving circuit and the driving signal sent by the first gate line driving circuit, the switches in the N pixel units are turned on, so that the OLEDs in the N pixel units are in a light-emitting state.
In one embodiment, the first data line driving circuit is enabled to send a first driving signal to each of the N pixel units; the first driving signal can enable the storage capacitor of the corresponding pixel unit in the N pixel units to store electric quantity;
the first grid line driving circuit is enabled to send a second driving signal to each pixel unit in the M pixel units; the second driving signal can enable the first switch of the corresponding pixel unit in the M pixel units to be in a conducting state; the first switch under the conducting state enables the first driving signal to be input into the storage capacitor of the corresponding pixel unit in the N pixel units; wherein the content of the first and second substances,
the electric quantity stored by the storage capacitor of the corresponding pixel unit reaches a first threshold value, so that the second switch of the corresponding pixel unit is conducted; the second switch in the conducting state makes the OLED in the corresponding pixel unit in a light-emitting state.
In one embodiment, the first driving circuit includes a second gate line driving circuit; the second driving circuit includes a second data line driving circuit; the method further comprises the following steps:
when a fingerprint unlocking operation is detected in the fingerprint identification area, sending a third enabling signal to the second data line driving circuit, and sending a fourth enabling signal to the second grid line driving circuit, so as to send a driving signal to the N pixel units after the second data line driving circuit and the second grid line driving circuit are enabled; wherein the content of the first and second substances,
under the combined action of the driving signal sent by the second data line driving circuit and the driving signal sent by the second gate line driving circuit, the switches in the N pixel units are turned on, so that the OLEDs in the N pixel units are in a light-emitting state.
In one embodiment, the second data line driving circuit is enabled to send a third driving signal to each of the M pixel units; the third driving signal can enable the storage capacitor of the corresponding pixel unit in the M pixel units to store electric quantity;
the second grid line driving circuit is enabled to send a fourth driving signal to each pixel unit in the N pixel units; the fourth driving signal can enable the first switch of the corresponding pixel unit in the N pixel units to be in a conducting state; the first switch in the conducting state enables the third driving signal to be input into the storage capacitor of the corresponding pixel unit in the N pixel units; wherein the content of the first and second substances,
the electric quantity stored by the storage capacitor of the corresponding pixel unit reaches a first threshold value, so that the second switch of the corresponding pixel unit is conducted; the second switch in the conducting state makes the OLED in the corresponding pixel unit in a light-emitting state.
In one embodiment, the switches in the N pixel cells are TFTs.
It should be noted that: the display control method provided by the embodiment of the application and the display device embodiment belong to the same concept, and specific implementation processes thereof are described in the display device embodiment and are not described herein again.
The present embodiment further provides a storage medium, specifically a computer-readable storage medium, such as a memory of a display device, in which a computer program is stored, where the computer program is executable by a control circuit 401 (i.e., a display driver IC) of the display device to complete the steps of the foregoing method. The computer-readable storage medium may be a magnetic random access Memory (FRAM), a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Flash Memory (Flash Memory), a magnetic surface Memory, an optical disk, or a Compact Disc Read-Only Memory (CD-ROM), among other memories.
In the several embodiments provided in the present application, it should be understood that the disclosed method and intelligent device may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic or optical disk, or various other media that can store program code.
Alternatively, the integrated units described above in the present application may be stored in a computer-readable storage medium if they are implemented in the form of software functional modules and sold or used as independent products. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially implemented or portions thereof contributing to the prior art may be embodied in the form of a software product stored in a storage medium, and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic or optical disk, or various other media that can store program code.
It should be noted that: "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
The technical means described in the embodiments of the present application may be arbitrarily combined without conflict.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application.
Claims (10)
1. A display device, comprising: the pixel driving circuit comprises a control circuit, M pixel units, a first driving circuit connected with N pixel units in the M pixel units and a second driving circuit connected with each pixel unit in the M pixel units; the first driving circuit comprises a first data line driving circuit or a second grid line driving circuit; the second driving circuit comprises a first grid line driving circuit and a second data line driving circuit; the N pixel units are arranged in a fingerprint identification area of the display device; m and N are integers greater than 0; wherein the content of the first and second substances,
the control circuit is used for sending an enabling signal to the first driving circuit and the second driving circuit when the fingerprint identification area detects a fingerprint unlocking operation;
the first driving circuit and the second driving circuit are used for being enabled to send driving signals to the connected pixel units; under the combined action of the driving signal sent by the first data line driving circuit and the driving signal sent by the first gate line driving circuit, or under the combined action of the driving signal sent by the second data line driving circuit and the driving signal sent by the second gate line driving circuit, the Organic Light Emitting Diodes (OLEDs) in the N pixel units are in a light emitting state.
2. The display device according to claim 1, wherein in a case where the first driver circuit includes the first data line driver circuit,
the control circuit is specifically configured to send a first enable signal to the first data line driving circuit and send a second enable signal to the first gate line driving circuit when a fingerprint unlocking operation is detected in the fingerprint identification area; wherein the content of the first and second substances,
under the combined action of the driving signal sent by the first data line driving circuit and the driving signal sent by the first gate line driving circuit, the switches in the N pixel units are turned on, so that the OLEDs in the N pixel units are in a light-emitting state.
3. The display device according to claim 2,
the first data line driving circuit is used for sending a first driving signal to each pixel unit in the N pixel units after being enabled; the first driving signal can enable the storage capacitor of the corresponding pixel unit in the N pixel units to store electric quantity;
the first grid line driving circuit is used for sending a second driving signal to each of the M pixel units after being enabled; the second driving signal can enable the first switch of the corresponding pixel unit in the M pixel units to be in a conducting state; the first switch under the conducting state enables the first driving signal to be input into the storage capacitor of the corresponding pixel unit in the N pixel units; wherein the content of the first and second substances,
the electric quantity stored by the storage capacitor of the corresponding pixel unit reaches a first threshold value, so that the second switch of the corresponding pixel unit is conducted; the second switch in the conducting state makes the OLED in the corresponding pixel unit in a light-emitting state.
4. The display device according to claim 1, wherein in a case where the first driver circuit includes the second gate line driver circuit,
the control circuit is specifically configured to send a third enable signal to the second data line driving circuit and send a fourth enable signal to the second gate line driving circuit when the fingerprint unlocking operation is detected in the fingerprint identification area; wherein the content of the first and second substances,
under the combined action of the driving signal sent by the second data line driving circuit and the driving signal sent by the second gate line driving circuit, the switches in the N pixel units are turned on, so that the OLEDs in the N pixel units are in a light-emitting state.
5. The display device according to claim 4,
the second data line driving circuit is used for sending a third driving signal to each pixel unit in the M pixel units after being enabled; the third driving signal can enable the storage capacitor of the corresponding pixel unit in the M pixel units to store electric quantity;
the second gate line driving circuit is used for sending a fourth driving signal to each pixel unit in the N pixel units after being enabled; the fourth driving signal can enable the first switch of the corresponding pixel unit in the N pixel units to be in a conducting state; the first switch in the conducting state enables the third driving signal to be input into the storage capacitor of the corresponding pixel unit in the N pixel units; wherein the content of the first and second substances,
the electric quantity stored by the storage capacitor of the corresponding pixel unit reaches a first threshold value, so that the second switch of the corresponding pixel unit is conducted; the second switch in the conducting state makes the OLED in the corresponding pixel unit in a light-emitting state.
6. The display device according to any one of claims 2 to 5, wherein the switches in the N pixel cells are thin film field effect transistors (TFTs).
7. An electronic device, comprising: a processor and the display device of any one of claims 1 to 6; wherein the content of the first and second substances,
the processor is used for sending a notification signal to the control circuit when the fingerprint identification area detects a fingerprint unlocking operation;
the control circuit is used for responding to the notification signal and sending an enabling signal to the first driving circuit.
8. The electronic device of claim 7, further comprising:
the fingerprint sensor is used for collecting fingerprint information and sending the collected fingerprint information to the processor; the collected fingerprint information is generated based on light emitted by the OLED in the N pixel units in a light-emitting state;
the processor is further configured to match the acquired fingerprint information with the first fingerprint information, and determine whether to execute an unlocking operation according to a matching result.
9. A display control method, comprising:
when a fingerprint unlocking operation is detected in a fingerprint identification area of a display device, enabling signals are sent to a first driving circuit and a second driving circuit of the display device, and driving signals are sent to pixel units included in the connected display device after the first driving circuit and the second driving circuit are enabled; the first driving circuit is connected with N pixel units in M pixel units included in the display device; the second driving circuit is connected with each pixel unit in the M pixel units; the first driving circuit comprises a first data line driving circuit or a second grid line driving circuit; the second driving circuit comprises a first grid line driving circuit and a second data line driving circuit; under the combined action of the driving signal sent by the first data line driving circuit and the driving signal sent by the first grid line driving circuit, or under the combined action of the driving signal sent by the second data line driving circuit and the driving signal sent by the second grid line driving circuit, the OLEDs in the N pixel units are in a light-emitting state; the N pixel units are arranged in the fingerprint identification area; m and N are integers greater than 0.
10. A storage medium storing a computer program, characterized in that the computer program realizes the steps of the method of claim 9 when executed by a processor.
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