TW201601033A - Displaying device and driving circuit thereof and driving method and electronic equipment - Google Patents

Abstract

The instant disclosure relates to a displaying device and its driving circuit, driving method and electronic equipment. The driving method includes: providing a fingerprint sensing signals of the fingerprint sensing to some portion to the first electrodes during in a fingerprint sensing phase; inspecting the first electrodes that have received fingerprint sensing signals for self-capacitance, until all of the first electrodes are provided with fingerprint sensing signals through successive fingerprint sensing phases; detecting self-capacitance to the portion of the first electrode until through a plurality of fingerprint sensing stage sequentially to all of the first electrode to provide the fingerprint sensing signal; inspecting detecting self-capacitance to the all of the first electrodes of the for self-capacitance detection for fingerprint sensing; forming a group stage of any adjacent fingerprint sensing phases based on arbitrary constitute a group of adjacent fingerprint sensing phases stage in a plurality of sequentially from successive fingerprint sensing phases; and providing displaying signals to a plurality of the second electrodes corresponding to provided with a plurality of the first electrodes, with the first and second electrodes arranged located in different rows columns to drive the second electrodes to display images, in plurality of first electrodes located in different columns and displaying images two electrodes between at least one set of adjacent fingerprint sensing phases of at least one group stage.

Description

Display device, driving circuit thereof and driving method, and electronic device

The present invention relates to the field of flat panel display, and in particular to a display device, a driving circuit thereof, a driving method, and an electronic device.

The popularity of electronic devices such as smart phones and tablets has affected people's lifestyles. With the use of various payment clients and other applications, how to improve the security and privacy of electronic devices has become one of the research priorities of technicians.

Referring to Figure 1, there is shown a schematic diagram of an electronic device having a fingerprint recognition function in the prior art. A fingerprint sensing device 2 is disposed in the electronic device 1, and the fingerprint sensing device 2 can implement fingerprint recognition. The user of the electronic device 1 performs fingerprint recognition through the fingerprint sensing device 2, and can use the fingerprint image as a mobile phone startup key or a payment client key, thereby improving the security of use of the electronic device.

However, as shown in FIG. 1, the fingerprint sensing device 2 is a separate sensing device and is placed outside the display area 3 of the electronic device 1.

The fingerprint sensing device 2 occupies a space of the electronic device 1 and does not meet the requirements of the thinning of the electronic device 1. In addition, the fingerprint sensing device 2 is a separate electronic device, which has high cost, complicated production process, and inconvenience in integration.

The problem to be solved by the present invention is to provide a display device, a driving circuit thereof, a driving method, and an electronic device, which improve the integrated density of the display device.

In order to solve the technical problem, the present invention provides a driving method for implementing fingerprint sensing, the display device comprising: a display panel, wherein the display panel is provided with a plurality of first electrodes located in a predetermined area of the display panel, And a plurality of second electrodes located outside the predetermined area, wherein the first electrode and the second electrode are arranged in an array and used for image display, and the first electrode is further used for comparison with the second electrode Fingerprint sensing, defining a phase at which the first electrode performs fingerprint sensing is a fingerprint sensing phase; the driving method includes: providing a fingerprint sensing signal to a portion of the first electrode in a fingerprint sensing phase, the first portion of the portion The electrode performs self-capacitance detection until a fingerprint sensing signal is provided to all the first electrodes through a plurality of sequentially performed fingerprint sensing stages, and self-capacitance detection is performed on all the first electrodes to implement fingerprint sensing; and multiple sequential fingerprints are performed. Any adjacent fingerprint sensing phase in the sensing phase constitutes a set of adjacent fingerprint sensing phases, and between at least one set of adjacent fingerprint sensing phases, Said plurality of first and second electrodes are in different columns to provide a display signal to drive a second electrode located in a different row and the first electrodes of the plurality of image display.

Optionally, a display signal is provided to a second electrode located in a different column from the plurality of first electrodes between at least one set of adjacent fingerprint sensing stages to drive a different column from the plurality of first electrodes The step of realizing image display by the second electrode includes: when performing fingerprint sensing, between adjacent fingerprint sensing stages in a set of adjacent two fingerprint sensing stages, to be located with the plurality of first electrodes The second electrodes of the different columns provide display signals to drive a second electrode located in a different column than the plurality of first electrodes for image display.

Optionally, a display signal is provided to a second electrode located in a different column from the plurality of first electrodes between at least one set of adjacent fingerprint sensing stages to drive a different column from the plurality of first electrodes The step of realizing image display by the second electrode includes: when performing fingerprint sensing, providing display signals to the second electrodes located in different columns with the plurality of first electrodes between the plurality of sets of adjacent fingerprint sensing stages And displaying an image display by driving a second electrode located in a different column from the plurality of first electrodes.

Optionally, the first fingerprint sensing phase defined in the plurality of sequentially performed fingerprint sensing stages is a first fingerprint sensing phase, and the last fingerprint sensing phase is defined as a second fingerprint sensing phase; performing fingerprint sensing The driving method further includes providing a display signal to the second electrode located in a different column from the plurality of first electrodes before the first fingerprint sensing phase and/or after the second fingerprint sensing phase.

Optionally, the step of providing a display signal to the second electrode when performing fingerprint sensing is a display update phase, and the number of display update phases is performed when performing fingerprint sensing, and in a display update phase, Providing a display signal for a portion of the second electrodes of the first electrodes located in different columns, and performing at least one step of providing a display signal to all of the second electrodes located in different columns with the plurality of first electrodes through the plurality of display update stages .

Optionally, the step of providing a display signal to the second electrode when performing fingerprint sensing is a display update phase, and the number of display update phases is one or more during fingerprint sensing, and is performed in each of the display update phases. The plurality of first electrodes are located in different columns and all of the second electrodes provide display signals.

Optionally, the driving method further includes: providing a display signal to the second electrode in a different column from the plurality of first electrodes, providing the second electrode in the same row and different rows as the first electrodes Display signal.

Optionally, the step of providing a display signal to the second electrode when performing fingerprint sensing is a display update phase, and the number of display update phases is performed when performing fingerprint sensing, and in a display update phase, on the display panel A portion of the two electrodes provides a display signal for performing at least one display signal on all of the second electrodes on the display panel through the plurality of display update stages.

Optionally, the step of providing a display signal to the second electrode when performing fingerprint sensing is a display update phase, and the number of display update phases is one or more when fingerprint sensing is performed, and in each of the display update phases All of the second electrodes on the display panel provide display signals.

Optionally, the number of the display update phases is multiple, and the times of the multiple display update phases are the same or different.

Optionally, the number of the display update phases is multiple, and each of the display update phases provides a second electrode of the display signal that completely overlaps, partially overlaps, or does not overlap.

Optionally, the times of the plurality of fingerprint sensing stages are the same or different.

Optionally, in the fingerprint sensing phase, in a process of providing a display signal to the second electrodes in different columns with the plurality of first electrodes, to a second electrode in the same row and different rows from the first electrodes Provide a predetermined display signal.

Optionally, each fingerprint sensing stage provides a fingerprint sensing signal for self-capacitance detection of the first electrode portion overlapping or not overlapping.

Optionally, the display device further includes a touch sensing unit; the step of providing a display signal to the second electrode during fingerprint sensing is a display update phase; and the driving method between the fingerprint sensing phase and the display update phase The method further includes: driving the touch sensing unit to perform touch detection; or determining, in a plurality of sequentially performing fingerprint sensing stages, a first fingerprint sensing stage as a first fingerprint sensing stage, and defining a final The fingerprint sensing phase is a second fingerprint sensing phase. Before the first fingerprint sensing phase, and/or after the second fingerprint sensing phase, the driving method further includes: driving the touch sensing unit to Performing touch detection, or the driving method further includes: driving the touch sensing unit to perform touch detection at least between a set of adjacent fingerprint sensing stages that are not provided with a display update phase.

Optionally, the number of times the touch detection is performed when the fingerprint sensing is performed is one or more times.

Optionally, the number of times the touch detection is performed when performing fingerprint sensing is multiple times, and the times of multiple touch detections are the same or different.

Correspondingly, the present invention further provides a driving circuit for implementing fingerprint sensing, the display device comprising: a display panel, the display panel is provided with a plurality of first electrodes located in a predetermined area of the display panel, and located at the a plurality of second electrodes outside the predetermined area, wherein the first electrode and the second electrode are arranged in an array and used for image display, and the first electrode is further used for fingerprint sensing than the second electrode Defining a stage in which the first electrode performs fingerprint sensing is a fingerprint sensing stage; the driving circuit includes: a display driving unit, configured to provide a display signal to the plurality of display electrodes to implement image display; and a fingerprint sensing unit Providing the fingerprint sensing signal to the first electrode, performing self-capacitance detection on the first electrode to implement fingerprint sensing, and a control unit for controlling the fingerprint in a fingerprint sensing stage The sensing unit provides a fingerprint sensing signal to a portion of the first electrode, and performs self-capacitance detection on the portion of the first electrode until a plurality of sequentially performing fingerprint sensing stages The first electrode provides a fingerprint sensing signal, and all the first electrodes are self-capacitance detection to implement fingerprint sensing; and any adjacent fingerprint sensing stages in a plurality of sequentially performed fingerprint sensing stages constitute a set of adjacent fingerprint senses a measuring phase, and for controlling the display driving unit to provide a display signal to a second electrode located in a different column with the plurality of first electrodes between at least one set of adjacent fingerprint sensing stages to drive the The second electrode in which the plurality of first electrodes are located in different columns realizes image display.

Optionally, the control unit is configured to control the display driving unit to and between the adjacent fingerprint sensing stages only during a set of two adjacent fingerprint sensing stages when performing fingerprint sensing A second electrode having a first electrode located in a different column provides a display signal to drive a second electrode located in a different column from the plurality of first electrodes to effect image display.

Optionally, the control unit is configured to control the display driving unit to be in a second column different from the plurality of first electrodes between all adjacent fingerprint sensing stages when performing fingerprint sensing The electrode provides a display signal to drive a second electrode that is in a different column than the plurality of first electrodes to effect image display.

Optionally, the first fingerprint sensing phase defined in the plurality of sequentially performed fingerprint sensing phases is a first fingerprint sensing phase, and the last fingerprint sensing phase is defined as a second fingerprint sensing phase; the control unit When performing fingerprint sensing, before the first fingerprint sensing phase, and/or after the second fingerprint sensing phase, is further configured to control the display driving unit to be in a different column from the plurality of first electrodes The second electrode provides a display signal.

Optionally, the step of providing a display signal to the second electrode when performing fingerprint sensing is a display update phase, and the number of display update phases is performed when the driving circuit performs fingerprint sensing, and the control unit is configured to a display update phase, controlling the display driving unit to provide a display signal to a portion of the second electrode located in a different column with the plurality of first electrodes, and the plurality of first electrodes are transmitted through the plurality of display update stages All of the second electrodes located in different columns complete the step of providing a display signal at least once.

Optionally, the step of providing a display signal to the second electrode when performing fingerprint sensing is a display update phase, and the number of display update phases is one or more when the driving circuit performs fingerprint sensing, and the control unit uses In each of the display update stages, the display driving unit is controlled to provide a display signal to all of the second electrodes located in different columns with the plurality of first electrodes.

Optionally, the control unit is further configured to: when controlling the display driving unit to provide a display signal to the second electrode located in different columns with the plurality of first electrodes, while also controlling the display driving unit to A second electrode of the same column and different rows of electrodes provides a display signal.

Optionally, the step of providing a display signal to the second electrode when performing fingerprint sensing is a display update phase, and the number of display update phases is performed when the driving circuit performs fingerprint sensing, and the control unit is configured to And a display update phase, the display driving unit is configured to provide a display signal to a portion of the second electrode on the display panel, and the step of providing the display signal to the second electrode on the display panel at least once by the plurality of display update stages.

Optionally, the step of providing a display signal to the second electrode when performing fingerprint sensing is a display update phase, and the number of display update phases is one or more when the driving circuit performs fingerprint sensing, and the control unit uses In each of the display update stages, the display driving unit is controlled to provide a display signal to all of the second electrodes on the display panel.

Optionally, when the driving circuit performs fingerprint sensing, the number of display update phases is multiple, and the control unit is configured to control the display driving unit to make the times of the plurality of display update phases the same or different.

Optionally, the number of display update phases is performed when the driving circuit performs fingerprint sensing, and the control unit is configured to control the display driving unit to completely overlap, partially overlap, or not overlap in each display update phase. The two electrodes provide a display signal.

Optionally, the control unit is configured to control the fingerprint sensing unit to make the time of the multiple fingerprint sensing phases the same or different.

Optionally, the control unit is configured to control the display driving unit to provide a display signal to the second electrode located in different columns of the plurality of first electrodes during the fingerprint sensing phase, and simultaneously control the display The driving unit supplies a predetermined display signal to the second electrode in the same row and different rows from the respective first electrodes.

Optionally, the control unit is configured to control the fingerprint sensing unit to provide a fingerprint sensing signal to the first electrode that is partially overlapped or not overlapped in each fingerprint sensing phase to perform self-capacitance detection.

Optionally, the display device further includes a touch sensing unit; the driving circuit further includes: a touch driving circuit, configured to perform touch detection on the touch sensing unit; and define a second in fingerprint sensing The step of providing a display signal by the electrode is a display update phase, and the control unit is further configured to control the touch driving circuit to drive the touch sensing unit to perform touch between the fingerprint sensing phase and the display update phase. The first fingerprint sensing stage is defined as a first fingerprint sensing stage, and the last fingerprint sensing stage is a second fingerprint sensing stage, and the control unit is defined. The method further includes: before the first fingerprint sensing phase, and/or after the second fingerprint sensing phase, controlling the touch driving circuit to drive the touch sensing unit to perform touch detection; or The control unit is further configured to control the touch driving circuit to drive the touch sensing unit between at least one set of adjacent fingerprint sensing stages that are not provided with a display update phase To perform touch detection.

Optionally, the control unit is configured to control the touch driving circuit to perform one or more touch detections on the touch sensing unit when performing fingerprint sensing.

Optionally, the control unit is configured to control the touch driving circuit to perform multiple touch detection on the touch sensing unit when the fingerprint sensing is performed, where the times of the multiple touch detection are the same or different.

Accordingly, the present invention also provides a display device, the display device comprising: a display panel, the display panel is provided with a plurality of first electrodes located in a predetermined area of the display panel, and a plurality of seconds located outside the predetermined area An electrode, wherein the first electrode and the second electrode are arranged in an array and used for image display, the first electrode is further used for fingerprint sensing compared to the second electrode, and the first electrode is defined to perform fingerprint sensing The stage is a fingerprint sensing stage; a driving circuit, configured to provide a display signal to the plurality of first electrodes and second electrodes to implement image display; and is further used for a part of the first electrode in a fingerprint sensing stage Providing a fingerprint sensing signal, performing self-capacitance detection on the part of the first electrode, and providing a fingerprint sensing signal to all the first electrodes through a plurality of sequentially performing fingerprint sensing stages, and performing self-capacitance detection on all the first electrodes, To implement fingerprint sensing; any adjacent fingerprint sensing stages in a plurality of sequentially performed fingerprint sensing stages constitute a set of adjacent fingerprint sensing stages, and at least one set of phases Between fingerprint sensing stage, to provide a display signal to the second electrode of the first plurality of electrodes located in different columns, the second electrode driver in different columns of the plurality of first electrodes of the image display.

Optionally, the driving circuit includes: a display driving unit, configured to provide a display signal to the plurality of display electrodes to implement image display; and a fingerprint sensing unit, configured to provide the fingerprint to the first electrode a sensing signal, performing self-capacitance detection on the first electrode to implement fingerprint sensing; and a control unit, configured to control the fingerprint sensing unit to provide a fingerprint sensing signal to a portion of the first electrode in a fingerprint sensing phase Performing self-capacitance detection on the first electrode to provide fingerprint sensing signals to all first electrodes through a plurality of sequentially performing fingerprint sensing stages, and performing self-capacitance detection on all first electrodes to implement fingerprint sensing And any adjacent fingerprint sensing stages of the plurality of sequentially performed fingerprint sensing stages form a set of adjacent fingerprint sensing stages, and for controlling the display driving between at least one set of adjacent fingerprint sensing stages The unit provides a display signal to the second electrode located in different columns with the plurality of first electrodes to drive the second electrode located in different columns with the plurality of first electrodes to realize image display .

Optionally, the control unit is configured to control the display driving unit to and between the adjacent fingerprint sensing stages only during a set of two adjacent fingerprint sensing stages when performing fingerprint sensing A second electrode having a first electrode located in a different column provides a display signal to drive a second electrode located in a different column from the plurality of first electrodes to effect image display.

Optionally, the control unit is configured to control the display driving unit to be in a second column different from the plurality of first electrodes between all adjacent fingerprint sensing stages when performing fingerprint sensing The electrode provides a display signal to drive a second electrode that is in a different column than the plurality of first electrodes to effect image display.

Optionally, the first fingerprint sensing phase defined in the plurality of sequentially performed fingerprint sensing phases is a first fingerprint sensing phase, and the last fingerprint sensing phase is defined as a second fingerprint sensing phase; the control unit For performing fingerprint sensing, before the first fingerprint sensing phase, and/or after the second fingerprint sensing phase, for controlling the display driving unit to be different from the plurality of first electrodes The second electrode of the column provides a display signal.

Optionally, the step of providing a display signal to the second electrode when performing fingerprint sensing is a display update phase, and the number of display update phases is performed when the driving circuit performs fingerprint sensing, and the control unit is configured to a display update phase, controlling the display driving unit to provide a display signal to a portion of the second electrode located in a different column with the plurality of first electrodes, and the plurality of first electrodes are transmitted through the plurality of display update stages All of the second electrodes located in different columns complete the step of providing a display signal at least once.

Optionally, the step of providing a display signal to the second electrode when performing fingerprint sensing is a display update phase, and the number of display update phases is one or more when the driving circuit performs fingerprint sensing, and the control unit uses In each of the display update stages, the display driving unit is controlled to provide a display signal to all of the second electrodes located in different columns with the plurality of first electrodes.

Optionally, the control unit is further configured to: when controlling the display driving unit to provide a display signal to the second electrode located in different columns with the plurality of first electrodes, while also controlling the display driving unit to A second electrode of the same column and different rows of electrodes provides a display signal.

Optionally, the step of providing a display signal to the second electrode when performing fingerprint sensing is a display update phase, and the number of display update phases is performed when the driving circuit performs fingerprint sensing, and the control unit is configured to And a display update phase, the display driving unit is configured to provide a display signal to a portion of the second electrode on the display panel, and the step of providing the display signal to the second electrode on the display panel at least once by the plurality of display update stages.

Optionally, the step of providing a display signal to the second electrode when performing fingerprint sensing is a display update phase, and the number of display update phases is one or more when the driving circuit performs fingerprint sensing, and the control unit uses In each of the display update stages, the display driving unit is controlled to provide a display signal to all of the second electrodes on the display panel.

Optionally, when the driving circuit performs fingerprint sensing, the number of display update phases is multiple, and the control unit is configured to control the display driving unit to make the times of the plurality of display update phases the same or different.

Optionally, the number of display update phases is performed when the driving circuit performs fingerprint sensing, and the control unit is configured to control the display driving unit to completely overlap, partially overlap, or not overlap in each display update phase. The two electrodes provide a display signal.

Optionally, the control unit is configured to control the fingerprint sensing unit to make the time of the multiple fingerprint sensing phases the same or different.

Optionally, the control unit is configured to control the display driving unit to provide a display signal to the second electrode located in different columns of the plurality of first electrodes during the fingerprint sensing phase, and simultaneously control the display The driving unit supplies a predetermined display signal to the second electrode in the same row and different rows from the respective first electrodes.

Optionally, the control unit is configured to control the fingerprint sensing unit to provide a fingerprint sensing signal to the first electrode that is partially overlapped or not overlapped in each fingerprint sensing phase to perform self-capacitance detection.

Optionally, the display device further includes a touch sensing unit; the driving circuit further includes: a touch driving circuit, configured to perform touch detection on the touch sensing unit; and define a second in fingerprint sensing The step of providing a display signal by the electrode is a display update phase, and the control unit is further configured to control the touch driving circuit to drive the touch sensing unit to perform touch between the fingerprint sensing phase and the display update phase. The first fingerprint sensing stage is defined as a first fingerprint sensing stage, and the last fingerprint sensing stage is a second fingerprint sensing stage, and the control unit is defined. The method further includes: before the first fingerprint sensing phase, and/or after the second fingerprint sensing phase, controlling the touch driving circuit to drive the touch sensing unit to perform touch detection; or The control unit is further configured to control the touch driving circuit to drive the touch sensing unit between at least one set of adjacent fingerprint sensing stages that are not provided with a display update phase To perform touch detection.

Optionally, the control unit is configured to control the touch driving circuit to perform one or more touch detections on the touch sensing unit when performing fingerprint sensing.

Optionally, the control unit is configured to control the touch driving circuit to perform multiple touch detection on the touch sensing unit when the fingerprint sensing is performed, where the times of the multiple touch detection are the same or different.

Optionally, the display panel is a liquid crystal display panel.

Optionally, the display panel is a planar conversion liquid crystal display panel.

Accordingly, the present invention also provides an electronic device comprising the display device.

Optionally, the electronic device further includes: a fingerprint sensing instruction unit, configured to trigger a fingerprint sensing phase of the display device.

Optionally, the electronic device further includes: a booting device, an application device, a touch detecting device or a fingerprint screen unlocking device, wherein the fingerprint sensing command unit is disposed in the booting device, the application device, and the touch detecting device Or any one or more of the fingerprint screen unlocking devices.

Optionally, the electronic device is a mobile phone, a tablet computer, a notebook computer or a desktop computer.

Compared with the prior art, the technical solution of the present invention has the following advantages:

The display device of the present invention can realize fingerprint sensing in a predetermined area in addition to image display, that is, the display device of the present invention integrates the function of fingerprint sensing and has better integrated density.

For the electronic device including the display device, it is not necessary to separately provide a fingerprint sensing device, which can reduce the space and weight occupied by the fingerprint sensing device and reduce the cost.

In addition, when the fingerprint sensing is performed, the fingerprint sensing is not performed for a long time, but the self-capacitance detection is performed in multiple fingerprint sensing stages, and the fingerprint sensing stage is further driven between the fingerprint sensing stages. The first electrodes are located in different columns of the second electrode to realize image display, thereby segmenting the entire fingerprint sensing process, reducing the influence of excessive fingerprint sensing time on other functions performed by the electronic device, and at least one group Providing a display signal to a second electrode located in a different column from the plurality of first electrodes between adjacent fingerprint sensing stages, so that the second electrode provided with the display signal can realize a display signal during the fingerprint sensing process. The update can reduce the problem that the fingerprint sensing time is too long to cause the liquid crystal molecules in the display region corresponding to the second electrode to age, and the life is increased while further increasing the bulk density.

The above described objects, features, and advantages of the present invention will be more apparent from the aspects of the invention.

In order to solve the problems mentioned in the prior art, the present invention provides an electronic device. Referring to FIG. 2, there is shown a schematic diagram of an embodiment of an electronic device according to the present invention. The electronic device 4 includes a display device 5, and the display device 5 There is a display area 6 for image display, and the predetermined area 101 of the display area 6 can be used to implement fingerprint sensing.

The electronic device 4 may be provided with a fingerprint sensing instruction unit 8 connected to the display device 5 (including direct connection or wireless connection) for triggering the display device 5 to perform fingerprint sensing.

It should be noted that the fingerprint sensing instruction unit 8 is represented by a dashed box in FIG. 2, and only the unit can be included in the electronic device 4, and the position and form of the fingerprint sensing instruction unit 8 should not be limited.

For example, the electronic device 4 is provided with a booting device for starting the electronic device 4, the booting device may include the fingerprint sensing command unit 8, and the fingerprint sensing command unit 8 is used at the startup device. When the electronic device 4 is described, the display device 5 is triggered to perform fingerprint sensing.

Alternatively, the electronic device 4 is provided with an application device for providing an application. The application device may include the fingerprint sensing instruction unit 8 for triggering the display device 5 to perform fingerprint sensing during an application being selected or during use of the application.

Or, the electronic device 4 is provided with a touch detection device for performing touch detection. The touch detection device may include the fingerprint sensing instruction unit 8 , and the fingerprint sensing instruction unit 8 is configured to The display device 5 is triggered to perform fingerprint sensing when the user touches the predetermined area 101.

Alternatively, the electronic device 4 is provided with a fingerprint screen unlocking device, and the touch detecting device may include the fingerprint sensing instruction unit 8 for the user to touch the touch When the area 101 is scheduled, the display device 5 is triggered to perform fingerprint sensing. If the fingerprint of the mobile phone user acquired in the fingerprint sensing stage does not match the fingerprint information stored in the mobile phone, the screen unlocking is unsuccessful, thereby preventing leakage of the mobile phone information. Improve the security of mobile phone use. Optionally, the fingerprint sensing instruction unit 8 is disposed in any one or more of the booting device, the application device, the touch detection device, or the fingerprint screen unlocking device to provide more options for the user of the electronic device 4. And the security of the electronic device 4 is further improved.

It should be noted that the present invention does not limit whether the fingerprint sensing command unit is disposed in the electronic device 4. In other embodiments, the display device 5 may be triggered to perform fingerprint sensing by other means or means.

Specifically, the electronic device 4 can be a mobile phone, a tablet computer, a notebook computer or a desktop computer. The invention is not limited thereto.

Referring to Fig. 3, there is shown a functional block diagram of a first embodiment of the display device of the present invention. The display device 5 includes a display panel 10 and a drive circuit 20. The driving circuit 20 is connected to the display panel 10 and is a driving circuit for implementing fingerprint sensing by the display device.

The display panel 10 is provided with a plurality of first electrodes 3011 located in a predetermined area 101 of the display panel 10 and a plurality of second electrodes 3021 located outside the predetermined area 101, wherein the first electrodes 3011 and the second The electrodes 3021 are arranged in an array, and the first electrode 3011 and the second electrode 3021 are used for image display, wherein the first electrode 3011 is further used for fingerprint sensing, and the stage of defining the first electrode 3011 to perform fingerprint sensing is a fingerprint sense. Measurement phase.

a driving circuit 20, configured to provide a display signal to the plurality of display electrodes 300 (ie, the first electrode 3011 and the second electrode 3021) to implement image display; and to be used in a fingerprint sensing stage The electrode 3011 provides a fingerprint sensing signal, and performs self-capacitance detection on the portion of the first electrode 3011 until all the first electrodes 3011 are provided with fingerprint sensing signals through a plurality of sequentially performing fingerprint sensing stages, for all the first electrodes 3011 Self-capacitance detection is performed to implement fingerprint sensing; any adjacent fingerprint sensing stages in a plurality of sequentially performed fingerprint sensing stages constitute a set of adjacent fingerprint sensing stages, and in at least one set of adjacent fingerprint sensing stages A display signal is supplied to the second electrode 3021 located in a different column from the plurality of first electrodes 3011 to drive the second electrode 3021 located in a different column from the plurality of first electrodes 3011 to realize image display.

Specifically, the electronic device 4 is used for the mobile phone, and the mobile phone is turned on to trigger the fingerprint sensing phase. The driving circuit 20 provides a fingerprint sensing signal to the first electrode 3011, and performs self-capacitance detection on the first electrode 3011. To achieve fingerprint sensing. The finger of the mobile phone user is placed in the predetermined area 101 for fingerprint sensing. If the fingerprint of the mobile phone user obtained through the fingerprint sensing matches the fingerprint information stored in the mobile phone, the booting is successful, if the mobile phone obtained during the fingerprint sensing phase If the fingerprint of the user does not match the fingerprint information stored in the mobile phone, the booting is unsuccessful, thereby preventing the leakage of the mobile phone information and improving the security of the mobile phone.

In addition, when performing fingerprint sensing, the driving circuit 20 does not perform fingerprint sensing for a long time, but performs self-capacitance detection in multiple fingerprint sensing stages, and drives and works between fingerprint sensing stages. The second electrode 3021 in which the plurality of first electrodes are located in different columns realizes image display, thereby segmenting the entire fingerprint sensing process, and reducing the influence of the long fingerprint sensing time on the electronic device 4 performing other functions.

It should be noted that, in addition to triggering the fingerprint sensing phase of the mobile phone, the fingerprint sensing phase may be triggered by the fingerprint sensing command.

The electronic device 4 is also described as a mobile phone. The mobile phone user uses the Alipay client to make a payment, and when the application (APP) of the Alipay client is clicked, sends a fingerprint sensing command to the driving circuit 20 to trigger the fingerprint sensing phase.

It should be noted that the driving circuit 20 provides a display signal to the display electrode 300 (including the first electrode 3011) to realize image display before the fingerprint sensing phase; the driving circuit 20 receives the fingerprint sensing instruction. (The fingerprint sensing phase may be triggered by other means), and the fingerprint sensing phase is triggered, and the image signal is provided as a fingerprint sensing signal during the fingerprint sensing phase, and the first electrode 3011 is self-capacitance detected to implement Fingerprint sensing.

The user of the mobile phone is placed in the predetermined area 101 for fingerprint sensing. If the fingerprint of the mobile phone user acquired in the fingerprint sensing phase matches the fingerprint information stored in the mobile phone, the Alipay client can be successfully opened, and the mobile phone user can make a payment; If the fingerprint of the mobile phone user acquired in the fingerprint sensing phase does not match the fingerprint information stored in the mobile phone, the Alipay client cannot be successfully opened, thereby improving the security of the mobile payment. Similarly, the segmentation is performed during fingerprint sensing, and the second electrode 3021 located in a different column from the plurality of first electrodes may be driven between the fingerprint sensing stages to implement image display (eg, Alipay client) The image of the payment page is displayed), thereby reducing the effect of excessive fingerprint sensing time on image display or other functions.

In summary, the display device 5 of the present invention can realize fingerprint sensing in the predetermined area 101 in addition to image display, that is, the display device 5 of the present invention integrates the function of fingerprint sensing and has better integrated density. For the electronic device 4 including the display device 5, it is not necessary to separately provide a fingerprint sensing device, the space and weight occupied by the fingerprint sensing device can be reduced, and the cost of the electronic device 4 is further reduced.

In addition, the display device 5 of the present invention performs self-capacitance detection on the sensing signals sent to a portion of the first electrodes 3011 in the predetermined region during the fingerprint sensing phase, which can reduce the time for sensing in each fingerprint sensing phase, and reduce fingerprint sensing. The effect of excessive time on the working process of other devices of the electronic device 4.

Further, between at least one set of adjacent fingerprint sensing stages, a display signal is provided to the second electrode 3021 located in a different column from the plurality of first electrodes 3011, so that the second electrode 3021 can be provided with the display signal The updating of the display signal is realized in the fingerprint sensing process, so that the problem that the fingerprint sensing time is too long and the liquid crystal molecules in the display region 6 corresponding to the second electrode 3021 are aged is reduced.

Specifically, please continue to refer to FIG. 3, the drive circuit 20 includes:

a display driving unit 21, configured to provide display signals to the plurality of first electrodes 3011 and second electrodes 3021 to implement image display;

The fingerprint sensing unit 22 is configured to provide the fingerprint sensing signal to the first electrode 3011, and perform self-capacitance detection on the first electrode 3011 to implement fingerprint sensing.

The control unit 23 is configured to control the fingerprint sensing unit 22 to provide a fingerprint sensing signal to a portion of the first electrode 3011 during a fingerprint sensing phase, and perform self-capacitance detection on the portion of the first electrode 3011 until multiple The fingerprint sensing stage sequentially provides fingerprint sensing signals to all the first electrodes 3011, and self-capacitance detection is performed on all the first electrodes to implement fingerprint sensing; and any adjacent fingerprint sense in a plurality of sequentially performed fingerprint sensing stages The measurement phase constitutes a set of adjacent fingerprint sensing phases, and is configured to control the display driving unit 21 to be in a different column from the plurality of first electrodes 3011 between at least one set of adjacent fingerprint sensing phases The second electrode 3021 provides a display signal to drive the second electrode 3021 located in a different column from the plurality of first electrodes 3011 to effect image display.

For example, when any one of the booting device, the application device, and the touch detecting device in the electronic device issues a fingerprint sensing command, the control unit 23 receives the fingerprint sensing command, and in the fingerprint sensing command Triggering fingerprint sensing starts. When the fingerprint sensing is performed, the control unit 23 controls the fingerprint sensing unit 22 to enable the fingerprint sensing unit 22 to perform fingerprint sensing through a plurality of sequentially performed fingerprint sensing stages to obtain fingerprint information. The control unit 23 controls the fingerprint sensing unit 22 to perform self-capacitance sensing on the fingerprint sensing signals provided by the portion of the first electrodes 3011 in each fingerprint sensing phase. Therefore, the time of each of the fingerprint sensing phases It is not long, so that it is not easy to have too much influence on the operation of other devices of the electronic device 4 (for example, display devices, touch detection devices).

In this embodiment, the segmentation control of the fingerprint sensing is implemented through a control unit 23, and the display driving unit 21 is controlled to drive the image display between the fingerprint sensing stages, thereby improving the controllability of the entire fingerprint sensing process and reducing the display. The problem that the fingerprint information is not obtained or the fingerprint information is deviated due to improper cooperation between the driving unit 21 and the fingerprint sensing unit 22 is caused.

4 and 5, respectively, a schematic structural view of the display device 5 shown in FIG. 3 and a schematic structural view of the display panel 10 of the display device 5 in FIG. 3 are shown. In addition, here, the display device 5 is demonstrated as a liquid crystal display device, and a display medium is liquid crystal. However, the display device 5 of the present invention is not limited to a liquid crystal display device. In other embodiments, the display device 5 may be other suitable types of display devices. Specifically, the liquid crystal display device may be an In-Plane Switching (IPS) liquid crystal display panel.

The display device 5 of the present embodiment includes a display panel 10 and a drive circuit 20.

In the display device 5 of the present embodiment, the display panel 10 is further provided with a scan line 400 sorted by rows, a data line 500 sorted by columns, and a control switch 100 connected to the scan line 400 and the data line 500; the control The switch 100 includes a control terminal g, a first conductive terminal s and a second conductive terminal d, and the control terminal g is configured to control whether the first conductive terminal s and the second conductive terminal d are conductive; the control switch 100 The control terminal g is connected to the scan line 400, the first conductive terminal s is connected to the data line 500, and the second conductive terminal d is connected to the plurality of display electrodes 300 (see FIG. 5). .

Specifically, the control switch 100 may be a Thin Film Transistor (TFT), and the thin film transistor is an amorphous germanium thin film transistor or a polycrystalline germanium thin film transistor. The control switch 100 can also be a control switch of other configurations.

In the display device 5 of this embodiment, the display driving unit 21 includes:

A scan line driving circuit 203 is connected to the scan line 400 for transmitting scan drive signals G1, G2, . . . , GN to the scan line 400 to turn on the control switch 100.

A data line driving circuit 204 is connected to the data line 500 for transmitting display data S1 . . . SN to the data line 500, so that the conductive control switch 100 transmits the display data S1 . . . SN to the plurality of displays. The electrode 300 (including the first electrode 3011 and the second electrode 3021).

As shown in FIG. 5, the display panel 10 includes a plurality of sub-pixel units, and the display electrodes 300 (including the first electrode 3011 and the second electrode 3021) are pixel electrodes, and the display panel 10 is further provided with a plurality of sub-pixel units. The common electrode 600 opposite to the pixel electrode is used as the two-pole plate of a sub-pixel unit in the display panel 10 and the display electrode (specifically, the pixel electrode). The display data S1 . . . SN is a pixel voltage, the common electrode 600 is loaded with a common voltage VCOM, and the pixel voltage and the common voltage VCOM on the sub-pixel unit determine the deflection of the liquid crystal molecules in the sub-pixel unit, thereby determining the sub-pixel unit. Light transmittance, combined with the color of the color filter to achieve image display.

Specifically, each sub-pixel unit includes a display electrode 300 and a control switch 100 connected to the display electrode 300, wherein the sub-pixel unit including the first electrode 3011 is defined as the first sub-pixel unit 301; other sub-pixels The unit is the second sub-pixel unit 302, the control switch 100 in the first sub-pixel unit 301 is the first control switch 3011, and the display electrode 300 defining the second sub-pixel unit 302 is the second electrode 3021, and the second sub-pixel unit 302 The control switch 100 is a second control switch 3022. The scan line 400 connected to the first sub-pixel unit 301 is a first scan line 401, is connected to the second sub-pixel unit 302, and is not connected to the first sub-pixel unit 301. The connected scan line 400 is the second scan line 402. The data line 500 connected to the first sub-pixel unit 301 is the first data line 501, and is connected to the second sub-pixel unit 302 and is not connected to the first sub-pixel unit. The 301-connected data line 500 is the second data line 502.

The fingerprint sensing unit 202 includes a fingerprint sensing control circuit 205 and a fingerprint sensing detecting circuit 206.

The fingerprint sensing control circuit 205 is connected to the first scan line 401 for providing a fingerprint sensing control signal C to turn on the first control switch 3012.

The fingerprint sensing detection circuit 206 is connected to the first data line 501 for providing a fingerprint sensing signal D for performing self-capacitance detection, so that the first control switch 3012 that is turned on transmits the fingerprint sensing signal D to the The first electrode 3011 is described to perform fingerprint sensing on the first electrode 3011.

When the control unit 200 controls the fingerprint sensing unit 202 to perform fingerprint sensing, the fingerprint sensing control circuit 205 may be configured to send a fingerprint sensing control signal C to a portion of the first scan line 401 in a fingerprint sensing phase. The first control switch 3012 connected to the first scan line 401 is turned on, and the fingerprint sensing detection circuit 206 is controlled to send the fingerprint sensing signal D to the first data line 501 to row the predetermined area 101. Or the plurality of rows of the first electrodes 3011 perform self-capacitance detection.

In this embodiment, as shown in FIG. 4 and FIG. 5, a fourth switch K1, K2, ..., KQ is disposed between the plurality of first data lines 501 and the data line driving circuit 204; A fifth switch K1B, K2B, ..., KQB is disposed between the data line 501 and the fingerprint sensing detection circuit 206. During fingerprint sensing, the control unit 200 can turn on the fifth switch K1B, K2B, ..., KQB and the fourth switch K1, K2, ..., KQ to turn off during the fingerprint sensing phase, thereby making the fingerprint sense The detection detection circuit 206 is electrically connected to the first data line 501, so that the fingerprint sensing detection circuit 206 provides a fingerprint sensing signal to the first electrode 3011 through the first data line 501, and then the first electrode. The 3011 implements self-capacitance detection.

Specifically, in different fingerprint sensing stages, the control unit 200 sends the fingerprint sensing control signal C to the first scan line 401 of different columns through the control fingerprint sensing control circuit 205 to respectively be in different fingerprint sensing stages. The first control switch 3012 of the different columns is turned on, and the fingerprint sensing signal D sent by the fingerprint sensing detection circuit 206 to the first data line 501 can only be transmitted to the first control switch 3012 when it is turned on. The first electrode 3011 can further provide the fingerprint sensing signal D to the first electrode 3011 of different columns in different fingerprint sensing stages, and then perform self-capacitance detection on the one or more rows of the first electrodes 3011 in the fingerprint sensing stage. Implement fingerprint sensing.

For example, the fingerprint sensing includes a first fingerprint sensing phase, a second fingerprint sensing phase, a third fingerprint sensing phase, and the Mth fingerprint sensing phase. When receiving the fingerprint sensing instruction, the control unit 200 controls the fifth switch K1B, K2B, ..., KQB to be turned on, the fourth switch K1, K2, ..., KQ to be turned off, and performs the first fingerprint sensing phase of fingerprint sensing. The control unit 200 controls the fingerprint sensing detection circuit 206 to send the fingerprint sensing control signal C to the first scanning line GP, and controls the fingerprint sensing signal sent by the fingerprint sensing detecting circuit 206 to the first data line 501. D is to perform self-capacitance detection with the first electrode 3011 on the first scan line GP row; when performing the second fingerprint sensing phase of fingerprint sensing, the control unit 200 controls the fingerprint sensing detection circuit 206 to the first scan line GP +1, the fingerprint sensing control signal C is sent, and the fingerprint sensing signal D sent by the fingerprint sensing and detecting circuit 260 to the first data line 501 is controlled to be When the first electrode 3011 on the scan line GP+1 row performs self-capacitance detection... When performing the Mth fingerprint sensing phase of fingerprint sensing, the control unit 200 controls the fingerprint sensing detection circuit 206 to send a fingerprint to the first scan line GN. Sensing the control signal C to The first electrode 3011 on the first scanning line GN row performs self capacitance detection.

In the above example, the first electrodes 3011 that provide fingerprint sensing signals for self-capacitance detection in each fingerprint sensing stage belong to different columns and do not overlap. In this way, the self-capacitance detection of all the first electrodes 3011 can be completed faster, and the fingerprint sensing efficiency is improved.

Referring to FIG. 4 and FIG. 5 , the control unit 200 divides the entire fingerprint sensing process into multiple fingerprint sensing stages, in addition to performing fingerprint sensing, and defines a plurality of sequential fingerprint sensing stages. Any of the adjacent fingerprint sensing stages constitutes a set of adjacent fingerprint sensing stages, and the control unit 200 also controls the display driving unit 21 to perform a display update phase between at least one set of adjacent fingerprint sensing stages. The display update phase described herein refers to a step of providing a display signal to the second electrode 3021 when fingerprint sensing is performed.

Specifically, the control unit 200 may control all the fifth switches K1B, K2B, ..., KQB to be turned off after completing the self-capacitance detection of a portion of the first electrodes in a fingerprint sensing phase, and control all the fourth switches K1, K2... KQ is turned on, thereby causing the data line driving circuit 204 to be turned on with the first data line 501, and the control unit 200 controls the scanning line driving circuit 203 to transmit the scan driving signals G1, G2, ... GN to the second scanning line 402. The second control switch 3022 connected to the second scan line 402 is turned on, and the data line driving circuit 204 is controlled to supply a display signal to the second electrode 3021 located in a different column from the plurality of first electrodes 3011.

For example, between the first fingerprint sensing phase and the second fingerprint sensing phase of performing fingerprint sensing, the control unit 200 controls the scan line driving circuit 203 to be different from the plurality of first electrodes 3011. All of the second electrodes 3021 provide display signals such that all of the second electrodes 3021 implement display updates. Display updates of all of the second electrodes 3021 can also be implemented between any other adjacent fingerprint sensing stages when fingerprint sensing is performed. That is, a display signal may be provided to the second electrode 3021 located in a different column from the plurality of first electrodes 3011 between only one set of adjacent two fingerprint sensing stages when fingerprint sensing is performed, Image display is performed by driving the second electrode 3021 located in a different column from the plurality of first electrodes 3011.

The scan line driving circuit 203 can provide a display signal to the second electrode 3021 to deflect the liquid crystal molecules in the display unit corresponding to the second electrode 3021 by performing a display update phase between the fingerprint sensing stages, thereby reducing liquid crystal aging. The problem is to increase the life of the display device and the electronic device.

It should be noted that, in the foregoing embodiment, in each fingerprint sensing stage, the control unit 200 controls the fingerprint sensing unit 22 to provide fingerprint sensing signals to the first electrodes 3011 of different columns, and different fingerprint sensing stages are performed. The self-capacitance-detected first electrodes 3011 do not overlap.

However, the present invention does not limit this. In other embodiments, the control unit 200 is configured to control the fingerprint sensing unit 22 to provide a fingerprint sensing signal to the partially overlapping first electrodes during each fingerprint sensing phase. Capacitance detection. For example, in the first fingerprint sensing stage, the fingerprint sensing unit 22 performs self-capacitance detection on the first electrode 3011 on the first scan line GP, GP+1 row; in the second fingerprint sensing stage, the fingerprint sense The measuring unit 22 can perform self-capacitance detection on the GP+1 row and the first electrode 3011 of the GP+1 next row, that is, the self-capacitance detection is performed on the first electrode 3011 on the GP+1 row in both fingerprint sensing stages. The first electrode 3011 for self-capacitance detection is partially overlapped in the two fingerprint sensing stages, and the self-capacitance detection is repeated for the part of the first electrode 3011 in the adjacent fingerprint sensing stage, which can reduce the display between adjacent fingerprint sensing stages. The interference caused by fingerprint sensing during the update improves the accuracy of fingerprint sensing.

It should also be noted that, in the above embodiment, in the display update phase, the control unit 200 controls the display driving unit 21 to supply display signals to all of the second electrodes 3021 located in different columns with the plurality of first electrodes 3011. However, the present invention does not limit this. In other embodiments, a plurality of display update phases may also be performed when fingerprint sensing is performed. In different display update phases, the control unit 200 controls the display driving unit 21 to A portion of the second electrode 3021 in which the plurality of first electrodes 3011 are located in different columns provides a display signal to drive a portion of the second electrodes 3021 located in different columns from the plurality of first electrodes 3011 to effect image display.

For example, when the fingerprint sensing is performed, the first display update phase, the second display update phase, the third display update phase, and the Nth display update phase are sequentially performed. The N display update stages may each provide a display signal to all of the second electrodes 3021 located in different columns with the first electrode 3011 (ie, the second electrodes 3021 providing display signals for each display update phase are completely overlapped). Alternatively, in a display update phase, the control unit 200 controls the display driving unit 21 to provide a display signal to a portion of the second electrodes 3021 located in different columns with all of the first electrodes 3011, through a plurality of display update stages to all of the first It is sufficient that all of the second electrodes 3021 whose electrodes are located in different columns complete the display signal at least once. For the case of including a plurality of display update phases, the step of providing a display signal is performed at least once for all the second electrodes 3021 located in different columns with all the first electrodes 3011 through the plurality of display update phases, thereby ensuring all the second electrodes 3021 The display update is performed to ensure that the liquid crystal molecules in the display unit corresponding to the second electrode 3021 can achieve at least one deflection, thereby reducing the aging problem of the liquid crystal molecules.

Specifically, in the first display update phase, the display signal may be provided to the second electrode 3021 connected to the second scan lines G1, G2, and in the second display update phase, the second scan may be performed on the second scan line G2. The second electrode 3021 connected to the line 402 provides a display signal. That is, the control unit 200 controls the second electrode 3021 which may cause the display driving unit 21 to provide a display signal at each display update stage without overlapping at all.

Alternatively, in the first display update phase, the display signal may be provided to the second electrode 3021 connected to the second scan lines 402 G1, G2, and in the second display update phase, the second scan line G2 and the G2 may be next to the line The second electrode 3021 connected to the two scan lines 402 provides a display signal, and the second electrode 3021 connected to the second scan line G2 is provided with a display signal in both the first display update phase and the second display update phase. The second electrodes 3021 of the control unit 200 for controlling the display driving unit 21 to provide display signals in the respective display update segments may partially overlap.

In the above embodiment, the display update phase is performed between adjacent fingerprint sensing stages, but the present invention is not limited thereto. In order to further reduce the problem of aging of the liquid crystal molecules, in addition to performing the display update phase between the respective fingerprint sensing stages, the display update phase can also be performed at other times. Specifically, the first fingerprint sensing phase defined in the plurality of sequentially performed fingerprint sensing stages is a first fingerprint sensing phase, and the last fingerprint sensing phase is defined as a second fingerprint sensing phase; the control unit 200 For performing fingerprint sensing, before the first fingerprint sensing phase, and/or after the second fingerprint sensing phase, for controlling the display driving unit 21 to be in a different column from all the first electrodes 3011 The second electrode 3021 provides a display signal.

For example, for the case where the display update phase is performed before the first fingerprint sensing phase, when the control unit 200 receives the fingerprint sensing command, the display driving unit 21 is first controlled to be in a different column from all the first electrodes 3011. The second electrode 3021 provides a display signal, and then the control unit 200 controls the fingerprint sensing unit 22 to provide a fingerprint sensing signal to the portion of the first electrode 3011 to perform a fingerprint sensing instruction.

It should be noted that the control unit 200 is configured to control the time of each fingerprint sensing phase performed by the fingerprint sensing unit 22 to be the same, so that the control segment of the control unit 200 performs the fingerprint sensing phase in a simple manner. For example, the time for performing fingerprint sensing is 100 ms, and the fingerprint sensing phase is divided into 5 time periods of 20 ms. However, the present invention does not limit this, and the time of different fingerprint sensing stages may be different.

It should be noted that the time for the control unit 200 to control each display update phase performed by the display driving unit 21 may be the same, so that the control segment of the control unit 200 performs the display update phase in a simple manner. For example, the time for performing fingerprint sensing is 100 ms, and the fingerprint sensing phase is divided into 5 time periods of 20 ms, and is performed between adjacent fingerprint sensing phases, before the first fingerprint sensing phase, or after the second fingerprint sensing phase. A display update phase of 12 ms. However, the time of each display update phase is the same, and the time of different display update phases may be different.

As shown in FIGS. 4 and 5, the display panel 10 includes a second electrode 3021 that is different from the first electrode 3011, and includes a second electrode 3021 that is in the same row and different rows from the plurality of first electrodes 3011. . The control unit 200 is further configured to control the display driving unit 21 to simultaneously control the display driving unit 21 when providing a display signal to the second electrode 3021 located in a different column from the plurality of first electrodes 3011. A second electrode 3021 of the same column and different rows of electrodes 3011 provides a display signal.

Specifically, the control unit 200 may control all the fifth switches K1B, K2B, ..., KQB to be turned off after completing the self-capacitance detection of the portion of the first electrodes 3011 in a fingerprint sensing phase, and control all the fourth switches K1, K2. KQ is turned on, thereby causing the data line driving circuit 204 to be turned on with the first data line 501, and the control unit 200 controls the scanning line driving circuit 203 to send the scan driving signals G1, G2 to the second scanning line 402. GN, to turn on the second control switch 3022 connected to the second scan line 402; at the same time, the control unit 200 further controls the scan line drive circuit 203 to send the scan drive signals G1, G2, ... GN to the first scan line 401. The first control switch 3012 connected to the first scan line 401 is turned on, and the display signal is further transmitted through the data line drive circuit 204 to the second electrode 3021 different from the first electrode 3011. The second electrode 3021 in the same row and different rows of the plurality of first electrodes 3011 provides a display signal.

In this way, during the fingerprint sensing process, all the second electrodes 3021 on the display panel 10 perform display update, and all the second electrodes 3021 can realize deflection of the liquid crystal molecules corresponding to the display unit, thereby further reducing the liquid crystal aging problem, and improving the display panel 10 and The yield of the electronic device 4.

Specifically, the step of providing a display signal to the second electrode 3021 when performing fingerprint sensing is a display update phase, and the number of display update phases is performed when the driving circuit performs fingerprint sensing, and the control unit 200 is configured to use In a display update phase, the display driving unit 21 is controlled to provide a display signal to a portion of the second electrode 3021 on the display panel 10, and at least one of the second electrodes 3021 on the display panel 10 is provided at least once through the plurality of display update stages. The step of displaying the signal.

Alternatively, the number of display update phases is one or more when the driving circuit performs fingerprint sensing, and the control unit 200 is configured to control the display driving unit 21 on the display panel 10 in each of the display update phases. All of the second electrodes 3021 provide display signals.

The predetermined area of the display area where the second electrode 3021 of the first electrode 3011 is in the same row is defined. In this embodiment, the predetermined area 101 is a rectangle located at an intermediate position of the display device, and the predetermined screen area is an area located on both sides of the rectangular predetermined area 101.

Alternatively, the second electrode 3021 in the predetermined screen area may be displayed with a predetermined picture (eg, a gray picture, or a fingerprinted picture) before the fingerprint sensing stage. Then, when the fingerprint sensing is performed, the predetermined screen area may still display the predetermined screen (for example, a gray screen or a fingerprinted screen), and the screen displayed from the predetermined screen area is ensured from the fingerprint sensing stage and the display stage. It remains basically unchanged to ensure consistency in the reserved screen area.

Specifically, before performing the fingerprint sensing phase, the control unit 200 controls the display driving unit 21 to provide a predetermined display signal to the second electrode 3021 located in the same row and different rows from the respective first electrodes 3011 to make the predetermined The screen area displays a predetermined screen (for example, a gray screen, or a screen with a fingerprint). Thereafter, in the fingerprint sensing stage, the control unit 200 controls the display driving unit 21 to provide a display signal to the second electrode 3021 located in a different column from the plurality of first electrodes 3011 while controlling the display. The driving unit 21 supplies the predetermined display signal to the second electrode 3021 which is in the same row and different rows from the first electrodes 3011 to display the predetermined screen area in the fingerprint sensing stage (for example, gray) Screen, or a screen with fingerprints).

For example, the second electrode 3021 in the same row and different rows of the first electrode 3011 is loaded with a predetermined display signal before the fingerprint sensing phase to present a fingerprint image. The control unit 200 controls the fingerprint sensing unit 22 to perform the fingerprint sensing on the partial first electrode 3011, and turns on the first scan line 401 of the partial row, and is different from the first electrode 3011 at this time. The second electrode 3021 of the row is still connected to the data line driving circuit 204, and the control unit 22 can control the data line driving circuit 204 to supply a predetermined display signal to the second electrode 3021 in the same row and different rows as the first electrode 3011. The second electrode 3021 loaded with the predetermined display signal remains substantially unchanged from the picture displayed before the fingerprint sensing phase, and remains a fingerprint picture. In addition to performing self-capacitance detection on the first columns 3011 of different columns at each fingerprint sensing stage as described above, self-capacitance detection of the first electrodes 3011 of different rows may also be performed at each fingerprint sensing stage.

For example, the control unit 200 may control all of the fourth switches K1, K2, ..., KQ to be turned off when fingerprint sensing is performed (eg, receiving a fingerprint sensing command), and control different groups during different fingerprint sensing stages. The fifth switches K1B, K2B, ..., KQB are turned on (the number of each of the fifth switches K1B, K2B, ..., KQB may be one or more), and the fingerprint sensing control circuit 205 is controlled to all of the first scan lines 401. Sending the fingerprint sensing control signal C, when all the first control switches 3012 are turned on, the fingerprint sensing signal D sent to the first data line 501 connected to the fifth switch that is turned on, so that different fingerprint sensing stages can be performed The fingerprint sensing signal D is provided to a portion of the first electrode 3011 of different rows, and the self-capacitance detection can be performed on a portion of the first electrode 3011 of different rows.

Alternatively, the control unit 200 turns on the fifth switch K1B, K2B, ..., KQB, respectively, and turns on the first scan line 501 with the fingerprint sensing control circuit 205, and can also be in each fingerprint sensing stage. One or more first electrodes 3011 at a particular location perform self capacitance detection.

The display device 5 further includes a touch sensing unit (not labeled) for implementing touch detection. As shown in FIG. 5, the display panel 10 is further provided with a common electrode 600, and the common electrode 600 can further be used as a touch sensing unit. The present invention is not limited to the use of the common electrode 600 as a touch sensing unit. The touch sensing unit is an external touch sensing unit, or the touch sensing unit is a part of the display panel 40. For example, the touch sensing unit is an on-screen touch sensing unit (on cell) or the touch sensing unit is an in-cell touch sensing unit (in cell).

The driving circuit 20 further includes: a touch driving circuit 209, configured to perform touch detection on the touch sensing unit;

The stage of providing the display signal to the second electrode 3021 during the fingerprint sensing is a display update phase, and the control unit 200 is further configured to control the touch driving circuit 209 between the fingerprint sensing phase and the display update phase. The touch sensing unit is driven to perform touch detection. For example, the fingerprint sensing includes multiple fingerprint sensing stages, and a display update phase is performed between one or more sets of adjacent fingerprint sensing stages, and touch detection can be performed between the fingerprint sensing stages, which is usually completed. The touch detection time is short, and it does not have a large impact on fingerprint sensing and image display.

Alternatively, the first fingerprint sensing phase defined in the plurality of sequentially performed fingerprint sensing stages is a first fingerprint sensing phase, and the last fingerprint sensing phase is defined as a second fingerprint sensing phase, and the control unit 200 further For controlling the touch driving circuit 209 to drive the touch sensing unit to perform touch detection before the first fingerprint sensing phase and/or after the second fingerprint sensing phase. In other words, the control unit 200 may perform a touch detection before receiving the fingerprint sensing instruction, and then perform the first fingerprint sensing phase; or, after completing the last fingerprint sensing phase of the fingerprint sensing, A touch out detection.

Or the control unit 200 is further configured to control the touch driving circuit 209 to drive the touch sensing unit to perform at least between a group of adjacent fingerprint sensing stages that are not provided with a display update phase. Touch detection. For example, fingerprint sensing is performed on a portion of the first electrode 3011 during the first fingerprint sensing phase, and then between the first fingerprint sensing phase and the second fingerprint sensing phase, first with the first electrode 3011 All the second electrodes 3021 of different columns perform a display update phase, and then fingerprint sensing is performed on another portion of the first electrodes 3011 in the second fingerprint sensing phase, and the second fingerprint sensing stage and the third fingerprint sensing are performed. Touch detection is performed between the phases, and finally the third fingerprint sensing is performed to complete the self-capacitance detection of all the first electrodes 3011 to obtain complete fingerprint information.

It should be noted that the control unit 200 is configured to control the touch driving circuit 209 to perform one or more touch detections on the touch sensing unit when performing fingerprint sensing.

The control unit 200 is configured to control the touch driving circuit 209 to perform multiple touch detections on the touch sensing unit when the fingerprint sensing is performed, and the times of the multiple touch detection are the same or different.

Accordingly, the present invention also provides a driving method for implementing fingerprint sensing by a display device. The technical solution of the driving method of the display device of the present invention will be described below with reference to the display device 5 shown in FIGS. 3 to 5.

The display device 5 includes: a plurality of first electrodes 3011 located in a predetermined area 101 of the display panel 10; and a plurality of second electrodes 3021 located outside the predetermined area 101, wherein the first electrodes 3011 The first electrode 3011 and the second electrode 3021 are used for image display, wherein the first electrode 3011 is further used for fingerprint sensing, and the first electrode 3011 is defined to perform fingerprint sensing. For the fingerprint sensing phase.

The driving method includes:

During a fingerprint sensing phase, a portion of the first electrode 3011 is provided with a fingerprint sensing signal, and the portion of the first electrode 3011 is self-capacitance detected until all of the first electrodes 3011 are provided through a plurality of sequentially performed fingerprint sensing stages. The fingerprint sensing signal performs self-capacitance detection on all the first electrodes 3011 to implement fingerprint sensing; and any adjacent fingerprint sensing stages in the plurality of sequentially performed fingerprint sensing stages constitute a set of adjacent fingerprint sensing stages, and Providing a display signal to the second electrode 3021 located in a different column from the plurality of first electrodes 3011 between at least one set of adjacent fingerprint sensing stages to drive the plurality of first electrodes 3011 The second electrode 3021 of different columns implements image display.

For example, when any one of the booting device, the application device, the touch detecting device, or the fingerprint screen unlocking device in the electronic device 4 issues a fingerprint sensing command, the control unit 23 receives the fingerprint sensing command, and The fingerprint sensing is started under the trigger of the fingerprint sensing instruction. During the fingerprint sensing, the sensing of the fingerprint is completed through a plurality of fingerprint sensing stages, and the fingerprint information is obtained, and the fingerprint sensing signal is provided to some of the first electrodes for self-capacitance sensing in each fingerprint sensing stage. Therefore, the time of each of the fingerprint sensing stages is not long, so that it is not easy to have too much influence on the operation of other devices of the electronic device 4 (for example, a display device, a touch detection device).

4 and FIG. 5, in the display device 5 of the present embodiment, the display panel 10 is further provided with scan lines 400 sorted by rows, data lines 500 sorted by columns, and data and data with the scan lines 400. The control switch 100 includes a control terminal g, a first conductive terminal s and a second conductive terminal d, and the control terminal g is configured to control the first conductive terminal s and the second conductive terminal Whether the control terminal g of the control switch 100 is connected to the scan line 400, the first conductive end s is connected to the data line 500, and the second conductive end d and the plurality of The display electrodes 300 are connected correspondingly (see Fig. 5).

Specifically, the control switch 100 may be a thin film transistor (TFT), and the thin film transistor is an amorphous germanium thin film transistor or a polycrystalline germanium thin film transistor. The control switch 100 can also be a control switch of other configurations.

In the display device 5 of this embodiment, the driving method includes:

Scan drive signals G1, G2, . . . GN are transmitted to the scan line 400 to turn on the control switch 100.

The display data S1 . . . SN is transmitted to the data line 500, and the turned-on control switch 100 transmits the display data S1 . . . SN to the plurality of display electrodes 300 (including the first electrode 3011 and the second electrode 3021) (see Figure 4).

As shown in FIG. 5, the display panel 10 includes a plurality of sub-pixel units, and the display electrodes 300 (including the first electrode 3011 and the second electrode 3021) are pixel electrodes, and the display panel 10 is further provided with a plurality of sub-pixel units. The common electrode 600 opposite to the pixel electrode is used as the two-pole plate of a sub-pixel unit in the display panel 10 and the display electrode (specifically, the pixel electrode). The display data S1 . . . SN is a pixel voltage, the common electrode 600 is loaded with a common voltage VCOM, and the pixel voltage and the common voltage VCOM on the sub-pixel unit determine the deflection of the liquid crystal molecules in the sub-pixel unit, thereby determining the sub-pixel unit. Light transmittance, combined with the color of the color filter to achieve image display.

Specifically, each sub-pixel unit includes a display electrode 300 and a control switch 100 connected to the display electrode 300, wherein the sub-pixel unit including the first electrode 3011 is defined as the first sub-pixel unit 301; other sub-pixels The unit is the second sub-pixel unit 302, the control switch 100 in the first sub-pixel unit 301 is the first control switch 3011, and the display electrode 300 defining the second sub-pixel unit 302 is the second electrode 3021, and the second sub-pixel unit 302 The control switch 100 is a second control switch 3022. The scan line 400 connected to the first sub-pixel unit 301 is a first scan line 401, is connected to the second sub-pixel unit 302, and is not connected to the first sub-pixel unit 301. The connected scan line is the second scan line 402. The data line 500 connected to the first sub-pixel unit 301 is the first data line 501, is connected to the second sub-pixel unit 302, and is not connected to the first sub-pixel unit 301. The connected data line 500 is the second data line 502.

During the fingerprint sensing phase, a fingerprint sensing control signal C is provided to turn on the first control switch 3012; and a fingerprint sensing signal D for self-capacitance detection is provided, so that the first control switch 3012 that turns on the fingerprint The sensing signal D is transmitted to the first electrode 3011 to perform fingerprint sensing on the first electrode 3011.

When fingerprint sensing is performed, the fingerprint sensing control signal C may be sent to a portion of the first scan line 401 during a fingerprint sensing phase to turn on the first control switch 3012 connected to the portion of the first scan line 401, and to the The first data line 501 sends the fingerprint sensing signal D to perform self-capacitance fingerprint sensing on the one or more rows of the first electrode 3011 of the predetermined area 101.

In this embodiment, as shown in FIG. 4 and FIG. 5, a fourth switch K1, K2, ..., KQ is disposed between the plurality of first data lines 501 and the data line driving circuit 204; A fifth switch K1B, K2B, ..., KQB is disposed between the data line 501 and the fingerprint sensing detection circuit 206. When the fingerprint is sensed, the fifth switch K1B, K2B, ..., KQB can be turned on, and the fourth switch K1, K2, ..., KQ is turned off, so that the first data line 501 is turned on to achieve the transmission. The first data line 501 provides a fingerprint sensing signal to the first electrode 3011, thereby implementing self-capacitance fingerprint sensing on the first electrode 3011.

Specifically, in different fingerprint sensing stages, the fingerprint sensing control signals C are sent to the first scan lines 401 of different columns to respectively switch the first control switches 3012 of different columns in different fingerprint sensing stages, The fingerprint sensing signal D sent to the first data line 501 can only be transmitted to the first electrode 3011 connected thereto when the first control switch 3012 is turned on, and thus can be different to the different columns in different fingerprint sensing stages. An electrode 3011 provides a fingerprint sensing signal D, and then performs self-capacitance detection on one or more rows of the first electrodes 3011 in the fingerprint sensing phase to implement fingerprint sensing.

For example, the fingerprint sensing includes a first fingerprint sensing phase, a second fingerprint sensing phase, a third fingerprint sensing phase, and the Mth fingerprint sensing phase. When fingerprint sensing is performed, the fifth switch K1B, K2B, ..., KQB is turned on, and the fourth switch K1, K2, ..., KQ is turned off, and when the first fingerprint sensing phase of fingerprint sensing is performed, the first scan is performed. The line GP sends the fingerprint sensing control signal C, and sends the fingerprint sensing signal D to the first data line 501 to perform self-capacitance detection with the first electrode 3011 on the first scanning line GP line; performing fingerprint sensing The fingerprint sensing control signal C is sent to the first scan line GP+1 and the fingerprint sensing signal D sent to the first data line 501 by the fingerprint sensing detection circuit 206. In order to perform self-capacitance detection with the first electrode 3011 on the first scan line GP+1 row... When performing the Mth fingerprint sensing phase of fingerprint sensing, send a fingerprint sensing control signal to the first scan line GN C, so that self-capacitance detection is performed with the first electrode 3011 on the first scanning line GN row.

In the above example, the first electrodes 3011 that provide fingerprint sensing signals for self-capacitance detection in each fingerprint sensing stage belong to different columns and do not overlap. In this way, the self-capacitance detection of all the first electrodes 3011 can be completed faster, and the fingerprint sensing efficiency is improved.

Please continue to refer to FIG. 4 and FIG. 5, when performing fingerprint sensing, divide the whole fingerprint sensing process into multiple fingerprint sensing stages, and define any adjacent fingerprint sense in multiple fingerprint sensing stages. The measurement phase constitutes a set of adjacent fingerprint sensing phases, and a display update phase is performed between at least one set of adjacent fingerprint sensing phases. The display update phase described herein refers to a step of providing a display signal to the second electrode 3021 when fingerprint sensing is performed.

Specifically, after completing the self-capacitance detection of a portion of the first electrodes in a fingerprint sensing phase, all of the fifth switches K1B, K2B, ..., KQB are controlled to be turned off, and all of the fourth switches K1, K2, ..., KQ are controlled to be turned on, thereby The data line driving circuit 204 is turned on with the first data line 501, and the scan driving signals G1, G2, . . . , GN are sent to the second scan line 402 to turn on the second control switch 3022 connected to the second scan line 402, and The second electrode 3021, which controls the data line driving circuit 204 and the plurality of first electrodes 3011 in different columns, provides a display signal.

For example, between the first fingerprint sensing phase and the second fingerprint sensing phase of performing fingerprint sensing, a display signal is provided to all of the second electrodes 3021 of different columns with the plurality of first electrodes 3011, thereby All of the second electrodes 3021 implement display updates. Display updates of all of the second electrodes 3021 can also be implemented between any other adjacent fingerprint sensing stages when fingerprint sensing is performed. That is, a display signal may be provided to the second electrode 3021 located in a different column from the plurality of first electrodes 3011 between only one set of adjacent two fingerprint sensing stages when fingerprint sensing is performed, Image display is performed by driving the second electrode 3021 located in a different column from the plurality of first electrodes 3011.

By performing the display update phase between the fingerprint sensing stages, the display signal can be provided to the second electrode 3021 to deflect the liquid crystal molecules in the display unit corresponding to the second electrode 3021, thereby reducing the problem of liquid crystal aging and thereby improving the display. The life of the device and the electronic device.

It should be noted that, in the foregoing embodiment, the fingerprint sensing signals are provided to the first electrodes 3011 of different columns in each fingerprint sensing stage, and the first electrodes 3011 that perform self-capacitance detection in different fingerprint sensing stages do not overlap.

However, the present invention does not limit this. In other embodiments, a fingerprint sensing signal is provided to the partially overlapping first electrodes during each fingerprint sensing phase to perform self-capacitance detection. For example, in the first fingerprint sensing phase, the first electrode 3011 on the first scan line GP, GP+1 row may be self-capacitance detected; in the second fingerprint sensing phase, the GP+1 row may be The first electrode 3011 of the next row of GP+1 performs self-capacitance detection, that is, the self-capacitance detection is performed on the first electrode 3011 on the GP+1 row in both fingerprint sensing stages, and the self-capacitance is performed in two fingerprint sensing stages. The detected first electrodes 3011 are partially overlapped, and the adjacent fingerprint sensing stage repeatedly performs self-capacitance detection on a portion of the first electrodes 3011, which can reduce interference caused by fingerprint sensing during display update between adjacent fingerprint sensing stages. Improve the accuracy of fingerprint sensing.

It should also be noted that, in the above embodiment, in the display update phase, display signals are supplied to all of the second electrodes 3021 located in different columns from the plurality of first electrodes 3011. However, the present invention does not limit this. In other embodiments, when the fingerprint sensing is performed, a plurality of display update phases may be performed, and in different display update phases, the plurality of first electrodes 3011 are located in different columns. A portion of the second electrode 3021 provides a display signal to drive a portion of the second electrode 3021 located in a different column from the plurality of first electrodes 3011 to effect image display.

For example, when the fingerprint sensing is performed, the first display update phase, the second display update phase, the third display update phase, and the Nth display update phase are sequentially performed. The N display update stages may each provide a display signal to all of the second electrodes 3021 located in different columns with the first electrode 3011 (ie, the second electrodes 3021 providing display signals for each display update phase are completely overlapped). It is also possible to provide a display signal to a portion of the second electrodes 3021 located in different columns with all of the first electrodes 3011 in a display update phase, and to all of the second electrodes 3021 in different columns with all of the first electrodes through a plurality of display update stages. Complete the step of providing a display signal at least once. For the case of including a plurality of display update phases, the step of providing a display signal is performed at least once for all the second electrodes 3021 located in different columns with all the first electrodes 3011 through the plurality of display update phases, thereby ensuring all the second electrodes 3021 The display update is performed to ensure that the liquid crystal molecules in the display unit corresponding to the second electrode 3021 can achieve at least one deflection, thereby reducing the aging problem of the liquid crystal molecules.

Specifically, in the first display update phase, the display signal may be provided to the second electrode 3021 connected to the second scan lines G1, G2, and in the second display update phase, the second scan may be performed on the second scan line G2. The second electrode 3021 connected by the line 402 provides a display signal ... that is, the second electrodes 3021 which provide display signals at the respective display update stages do not overlap at all.

Alternatively, in the first display update phase, the display signal may be provided to the second electrode 3021 connected to the second scan lines 402 G1, G2, and in the second display update phase, the next scan line G2 and G2 may be provided. The second electrode 3021 connected to the second scan line 402 provides a display signal, and the second electrode 3021 connected to the second scan line G2 is provided with a display signal in both the first display update phase and the second display update phase. The second electrodes 3021 that provide display signals in the respective display update segments may partially overlap.

In the above embodiment, the display update phase is performed between adjacent fingerprint sensing stages, but the present invention is not limited thereto. In order to further reduce the problem of aging of the liquid crystal molecules, in addition to performing the display update phase between the respective fingerprint sensing stages, the display update phase can also be performed at other times. Specifically, the first fingerprint sensing phase defined in the plurality of sequentially performed fingerprint sensing stages is a first fingerprint sensing phase, and the last fingerprint sensing phase is defined as a second fingerprint sensing phase; Including when performing fingerprint sensing, a display signal is provided to a second electrode 3021 that is in a different column from all of the first electrodes before the first fingerprint sensing phase, and/or after the second fingerprint sensing phase.

For example, for the case where the display update phase is performed before the first fingerprint sensing phase, when the fingerprint sensing instruction is received, the display signal is first supplied to the second electrode 3021 located in a different column from all the first electrodes 3011, and then the partial portion The first electrode 3011 provides a fingerprint sensing signal for fingerprint sensing instructions.

It should be noted that the time of each fingerprint sensing phase is the same, so that the control segment of the control unit 200 performs the fingerprint sensing phase in a simple manner. For example, the time for performing fingerprint sensing is 100 ms, and the fingerprint sensing phase is divided into 5 time periods of 20 ms. However, the present invention does not limit this, and the time of different fingerprint sensing stages may be different.

It should also be noted that the time of each display update phase may be the same, so that the control segment of the control unit 200 performs the display update phase in a relatively simple manner. For example, the time for performing fingerprint sensing is 100 ms, and the fingerprint sensing phase is divided into 5 time periods of 20 ms, and is performed between adjacent fingerprint sensing phases, before the first fingerprint sensing phase, or after the second fingerprint sensing phase. A display update phase of 12 ms. However, the time of each display update phase is the same, and the time of different display update phases may be different.

As shown in FIGS. 4 and 5, the display panel 10 includes a second electrode 3021 that is different from the first electrode 3011, and includes a second electrode 3021 that is in the same row and different rows from the plurality of first electrodes 3011. . The driving method further includes: when the display driving unit 21 is configured to supply a display signal to the second electrode 3021 located in a different column from the plurality of first electrodes 3011, and simultaneously to the same row as each of the first electrodes 3011 and different rows The two electrodes 3021 provide display signals.

Specifically, after the self-capacitance detection of the partial first electrode 3011 is completed in a fingerprint sensing phase, all the fifth switches K1B, K2B, ..., KQB are controlled to be turned off, and all the fourth switches K1, K2, ..., KQ are controlled to be turned on. The data line driving circuit 204 is electrically connected to the first data line 501, and the scan line driving circuit 203 is controlled to send the scan driving signals G1, G2, . . . , GN to the second scan line 402 to be turned on and the second scan line 402. The second control switch 3022 is connected; at the same time, the scan line driving circuit 203 is further controlled to send the scan driving signals G1, G2, . . . , GN to the first scan line 401 to turn on the first connected to the first scan line 401. The control switch 3012 further transmits the display signal to the second electrode 3021 different from the first electrode 3011 through the data line driving circuit 204, and further to the second electrode in the same row and different rows from the plurality of first electrodes 3011. The 3021 provides a display signal.

In this way, during the fingerprint sensing process, all the second electrodes 3021 on the display panel 10 perform display update, and all the second electrodes 3021 can realize deflection of the liquid crystal molecules corresponding to the display unit, thereby further reducing the liquid crystal aging problem and improving the display panel and the electronic device. Equipment yield.

Specifically, the stage of providing the display signal to the second electrode 3021 when performing fingerprint sensing is a display update phase, and the number of display update phases is performed when the driving circuit performs fingerprint sensing, and in a display update phase, A portion of the second electrode 3021 on the display panel 10 provides a display signal for performing at least one step of providing a display signal to all of the second electrodes 3021 on the display panel 10 through the plurality of display update stages.

Alternatively, the number of display update phases is one or more when the driving circuit performs fingerprint sensing, and each of the second electrodes 3021 on the display panel 10 is provided with a display signal in each of the display update phases.

The predetermined area of the display area where the second electrode 3021 of the first electrode 3011 is in the same row is defined. In this embodiment, the predetermined area 101 is a rectangle located at an intermediate position of the display device, and the predetermined screen area is an area located on both sides of the rectangular predetermined area 101.

Alternatively, the second electrode 3021 in the predetermined screen area may be displayed with a predetermined picture (eg, a gray picture, or a fingerprinted picture) before the fingerprint sensing stage. Then, when the fingerprint sensing is performed, the predetermined screen area may still display the predetermined screen (for example, a gray screen or a fingerprinted screen), and the screen displayed from the predetermined screen area is ensured from the fingerprint sensing stage and the display stage. It remains basically unchanged to ensure consistency in the reserved screen area.

Specifically, the driving method includes: providing a predetermined display signal to the second electrode 3021 located in the same row and different rows of the first electrodes 3011 before the fingerprint sensing phase, so that the predetermined screen area displays one A predetermined screen (such as a gray screen, or a screen with a fingerprint). Thereafter, in the fingerprint sensing stage, in the process of providing a display signal to the second electrode 3021 located in a different column from the plurality of first electrodes 3011, simultaneously to the same row and different rows from the first electrodes 3011 The two electrodes 3021 provide the predetermined display signal to cause the predetermined screen area to display the predetermined screen (eg, a gray screen, or a fingerprinted screen) during the fingerprint sensing phase.

For example, a second display electrode 3021 in the same row and different rows as the first electrode 3011 provides a predetermined display signal prior to the fingerprint sensing phase, presenting a fingerprint image. When the partial first electrode 3011 is fingerprint-sensed, the first scan line 401 of the partial row is turned on, and the second electrode 3021 of the same row and different rows of the first electrode 3011 is still connected to the data line driving circuit 204. Connected, the data line driving circuit 204 is controlled to supply a predetermined display signal to the second electrode 3021 in the same row and different rows as the first electrode 3011, so that the second electrode 3021 loaded with the predetermined display signal and the fingerprint sensing stage are displayed. The picture remains basically the same, still the fingerprint picture. In addition to performing self-capacitance detection on the first electrodes of different columns in each fingerprint sensing stage, self-capacitance detection may be performed on the first electrodes of different rows in each fingerprint sensing stage.

For example, when performing fingerprint sensing (for example, receiving a fingerprint sensing command), all fourth switches K1, K2, ..., KQ are controlled to be turned off, and in the different fingerprint sensing stages, the fifth switch K1B of different groups is controlled. , K2B ... KQB is turned on (the number of the fifth switches K1B, K2B, ... KQB may be one or more), and the fingerprint sensing control signal C is sent to all of the first scan lines 501 to turn on all the first When the switch 3012 is controlled, the fingerprint sensing signal D sent to the first data line 501 connected to the turned-on fifth switch can provide a sense of fingerprint to a portion of the first electrode 3011 of different rows at different fingerprint sensing stages. The signal D can be used to perform self-capacitance detection on a portion of the first electrode 3011 of different rows;

Alternatively, by controlling the fifth switches K1B, K2B, ..., KQB of the different groups to be turned on, and the conduction of the portion of the first scan line 501 is matched, the one or more first electrodes of the specific position may be selected in each fingerprint sensing stage. 3011 performs self-capacitance detection.

The display device further includes a touch sensing unit for implementing touch detection. As shown in FIG. 5, the display panel is further provided with a common electrode 600, and the common electrode 600 can further be used as a touch sensing unit. The present invention is not limited to the use of the common electrode 600 as a touch sensing unit. The touch sensing unit is an external touch sensing unit, or the touch sensing unit is a part of the display panel 40. For example, the touch sensing unit is an on-screen touch sensing unit (on cell) or the touch sensing unit is an in-cell touch sensing unit (in cell).

The driving method further includes: performing touch detection on the touch sensing unit;

The step of providing a display signal to the second electrode 3021 during fingerprint sensing is a display update phase, and the touch sensing unit is driven to perform touch detection between the fingerprint sensing phase and the display update phase. For example, the fingerprint sensing includes a plurality of fingerprint sensing stages, and a display update phase is performed between one or more sets of adjacent fingerprint sensing stages, and touch detection can be performed between the sensing stages, and the touch is usually completed. The time for control detection is short and does not have a large impact on fingerprint sensing and image display.

Alternatively, the first fingerprint sensing phase defined in the plurality of sequentially performed fingerprint sensing stages is the first fingerprint sensing phase, and the last fingerprint sensing phase is defined as the second fingerprint sensing phase, and the control unit further uses The touch sensing unit is driven to perform touch detection before the first fingerprint sensing phase and/or after the second fingerprint sensing phase. In other words, when a fingerprint sensing command is received, a touch detection is performed first, and then the first fingerprint sensing phase is performed; or, after the last fingerprint sensing phase of the fingerprint sensing is completed, a touch is performed. Detection.

Or alternatively, the touch sensing unit is driven to perform touch detection at least between a set of adjacent fingerprint sensing stages that are not provided with a display update phase. For example, fingerprint sensing is performed on a portion of the first electrode 3011 during the first fingerprint sensing phase, and then between the first fingerprint sensing phase and the second fingerprint sensing phase, first with the first electrode 3011 All the second electrodes 3021 of different columns perform a display update phase, and then fingerprint sensing is performed on another portion of the first electrodes 3011 in the second fingerprint sensing phase, and the second fingerprint sensing stage and the third fingerprint sensing are performed. Touch detection is performed between the phases, and finally the third fingerprint sensing is performed to complete the self-capacitance detection of all the first electrodes 3011 to obtain complete fingerprint information.

It should be noted that the touch sensing unit may perform one or more touch detections when performing fingerprint sensing.

When the touch sensing unit performs multiple touch detections during fingerprint sensing, the times of the multiple touch detections are the same or different.

Although the present invention has been disclosed above, the present invention is not limited thereto. Any changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be determined by the scope of the claims.

1‧‧‧Electronic equipment
2‧‧‧Fingerprint sensing device
3‧‧‧Display area
4‧‧‧Electronic equipment
5‧‧‧Display device
6‧‧‧Display area
8‧‧‧Fingerprint command unit
10‧‧‧ display panel
100‧‧‧Control switch
101‧‧‧Predetermined area
20‧‧‧Drive circuit
200‧‧‧Control unit
202‧‧‧Fingerprint sensing device
203‧‧‧Scan line driver circuit
204‧‧‧Data line driver circuit
205‧‧‧Fingerprint sensing control circuit
206‧‧‧Fingerprint detection and detection circuit
207‧‧‧Common voltage generating circuit
208‧‧‧First signal generation circuit
209‧‧‧Touch drive circuit
21‧‧‧Display drive unit
22‧‧‧Finger sensing unit
23‧‧‧Control unit
300‧‧‧ display electrode
301‧‧‧First sub-pixel unit
302‧‧‧Second sub-pixel unit
3011‧‧‧First electrode
3012‧‧‧First control switch
3021‧‧‧second electrode
3022‧‧‧Second control switch
40‧‧‧ display panel
400‧‧‧ scan line
401‧‧‧ first scan line
402‧‧‧Second scan line
500‧‧‧data line
501‧‧‧First data line
502‧‧‧second data line
600‧‧‧Common electrode
C‧‧‧Fingerprint sensing control signal
D‧‧‧ fingerprint sensing signal
G1‧‧‧ scan drive signal
G2‧‧‧ scan drive signal
GN‧‧‧ scan drive signal
K1‧‧‧fourth switch
K2‧‧‧fourth switch
K1B‧‧‧ fifth switch
K2B‧‧‧ fifth switch
KQB‧‧‧ fifth switch
S1‧‧‧Display data
SN‧‧‧ display data
D‧‧‧second conduction end
g‧‧‧Control end
S‧‧‧first conduction end

[Fig. 1] is a schematic diagram of an electronic device having a fingerprint recognition function in the prior art. [Fig. 2] is a schematic view showing an embodiment of an electronic apparatus of the present invention. [Fig. 3] is a functional block diagram of a first embodiment of the display device of the present invention. [Fig. 4] is a schematic view of the display device shown in Fig. 3. [Fig. 5] is a schematic structural view of the display panel in Fig. 4.

10‧‧‧ display panel

101‧‧‧Predetermined area

20‧‧‧Drive circuit

202‧‧‧Fingerprint sensing device

203‧‧‧Scan line driver circuit

204‧‧‧Data line driver circuit

205‧‧‧Fingerprint sensing control circuit

206‧‧‧Fingerprint detection and detection circuit

207‧‧‧Common voltage generating circuit

208‧‧‧First signal generation circuit

209‧‧‧Touch drive circuit

23‧‧‧Control unit

K1‧‧‧fourth switch

K2‧‧‧fourth switch

K1B‧‧‧ fifth switch

K2B‧‧‧ fifth switch

KQB‧‧‧ fifth switch

K3‧‧‧ sixth switch

K4‧‧‧ seventh switch

K5‧‧‧ tenth switch

Claims (58)

A display device for implementing a fingerprint sensing driving method, the display device comprising: a display panel, the display panel is provided with a plurality of first electrodes located in a predetermined area of the display panel, and a plurality of outside the predetermined area a second electrode, wherein the first electrode and the second electrode are arranged in an array and used for image display, the first electrode is further used for fingerprint sensing compared to the second electrode, and the first electrode is configured to perform fingerprinting The sensing phase is a fingerprint sensing phase; the driving method includes: providing a fingerprint sensing signal to a portion of the first electrode during a fingerprint sensing phase, and performing self-capacitance detection on the portion of the first electrode until a plurality of The fingerprint sensing phase sequentially provides fingerprint sensing signals to all the first electrodes, and self-capacitance detection is performed on all the first electrodes to implement fingerprint sensing; and any adjacent fingerprint sensing in a plurality of sequentially performed fingerprint sensing stages The stages form a set of adjacent fingerprint sensing stages, and between at least one set of adjacent fingerprint sensing stages, in a different column from the plurality of first electrodes Two electrodes provides a display signal to drive a second electrode located in a different row and the first electrodes of the plurality of image display. The driving method of claim 1, wherein a display signal is provided to a second electrode located in a different column with the plurality of first electrodes between at least one set of adjacent fingerprint sensing stages to drive the The step of realizing image display by the plurality of first electrodes located in different columns of the second electrode comprises: when performing fingerprint sensing, only between adjacent fingerprint sensing stages in a set of adjacent two fingerprint sensing stages The second electrodes of the plurality of first electrodes located in different columns provide a display signal to drive the second electrodes located in different columns with the plurality of first electrodes to achieve image display. The driving method of claim 1, wherein a display signal is provided to a second electrode located in a different column with the plurality of first electrodes between at least one set of adjacent fingerprint sensing stages to drive the The step of realizing image display by the plurality of first electrodes located in different columns of the second electrode comprises: when performing fingerprint sensing, between the plurality of sets of adjacent fingerprint sensing stages, being different from the plurality of first electrodes The second electrode of the column provides a display signal to drive a second electrode that is in a different column than the plurality of first electrodes to effect image display. The driving method of any one of the claims 1 to 3, wherein the fingerprint sensing stage defined in the plurality of sequentially performed fingerprint sensing stages is the first fingerprint sensing stage, and the final fingerprint feeling is defined. The measuring phase is a second fingerprint sensing phase; the driving method further includes: performing fingerprint sensing, before the first fingerprint sensing phase and/or after the second fingerprint sensing phase, to the plurality of A second electrode having an electrode in a different column provides a display signal. The driving method of claim 1, wherein the step of providing a display signal to the second electrode when performing fingerprint sensing is a display update phase, and the number of display update phases is performed when performing fingerprint sensing, in a display a refreshing phase, providing a display signal to a portion of the second electrode in a different column from the plurality of first electrodes, through the plurality of display update stages to all of the second electrodes in different columns from the plurality of first electrodes Complete the step of providing a display signal at least once. The driving method of claim 1, wherein the step of providing a display signal to the second electrode when performing fingerprint sensing is a display update phase, and the number of display update phases is one or more during fingerprint sensing. A display update phase provides a display signal to all of the second electrodes in different columns with the plurality of first electrodes. The driving method of claim 1, wherein the driving method further comprises: in the step of providing a display signal to the second electrode located in a different column from the plurality of first electrodes, in the same column as each of the first electrodes And the second electrode of the different row provides a display signal. The driving method of claim 7, wherein the step of providing a display signal to the second electrode when performing fingerprint sensing is a display update phase, and the number of display update phases is performed when fingerprint sensing is performed, in a display In the updating phase, a display signal is provided to a portion of the second electrode on the display panel, and the step of providing a display signal to at least one of the second electrodes on the display panel is performed through the plurality of display update phases. The driving method of claim 7, wherein the step of providing a display signal to the second electrode when performing fingerprint sensing is a display update phase, and the number of display update phases is one or more when fingerprint sensing is performed, Each of the display update stages provides a display signal to all of the second electrodes on the display panel. The driving method of 6, 8, or 9, wherein the number of the display update phases is plural, and the times of the plurality of display update phases are the same or different. The driving method according to 6, 8 or 9, wherein the number of the display update phases is plural, and the second electrodes providing the display signals in the respective display update phases are completely overlapped, partially overlapped or not overlapped. The driving method of any one of claims 1 to 3, wherein the times of the plurality of fingerprint sensing stages are the same or different. The driving method of any one of claims 1 to 3, wherein, in the fingerprint sensing phase, in a process of providing a display signal to a second electrode located in a different column with the plurality of first electrodes, A second electrode, each of which is located in the same column and in a different row, provides a predetermined display signal. The driving method of claim 1, wherein each of the fingerprint sensing stages provides a fingerprint sensing signal for self-capacitance detection of the first electrode portions overlapping or not overlapping. The driving method of claim 1, wherein the display device further comprises a touch sensing unit; the step of providing a display signal to the second electrode during fingerprint sensing is a display update phase; during the fingerprint sensing phase and display The driving method between the updating stages further includes: driving the touch sensing unit to perform touch detection; or determining, in a plurality of sequentially performing fingerprint sensing stages, the first fingerprint sensing stage as the first fingerprint During the sensing phase, the final fingerprint sensing phase is defined as a second fingerprint sensing phase, before the first fingerprint sensing phase, and/or after the second fingerprint sensing phase, the driving method further includes: The touch sensing unit is driven to perform touch detection, or the driving method further includes: performing the touch sensing unit at least between a set of adjacent fingerprint sensing stages that are not provided with a display update phase Drive to perform touch detection. The driving method of claim 15, wherein the number of times the touch detection is performed when the fingerprint sensing is performed is one or more times. The driving method of claim 15, wherein the number of times the touch detection is performed when the fingerprint sensing is performed is multiple times, and the time of the multiple touch detection is the same or different. A display device for implementing a fingerprint sensing driving circuit, the display device comprising: a display panel, the display panel is provided with a plurality of first electrodes located in a predetermined area of the display panel, and a plurality of outside the predetermined area a second electrode, wherein the first electrode and the second electrode are arranged in an array and used for image display, the first electrode is further used for fingerprint sensing compared to the second electrode, and the first electrode is configured to perform fingerprinting The sensing stage is a fingerprint sensing stage; the driving circuit includes: a display driving unit, configured to provide a display signal to the plurality of display electrodes to implement image display; and a fingerprint sensing unit, configured to An electrode is configured to provide the fingerprint sensing signal, and the first electrode is subjected to self-capacitance detection to implement fingerprint sensing; and the control unit is configured to control the fingerprint sensing unit to the first part in a fingerprint sensing stage The electrode provides a fingerprint sensing signal, and the part of the first electrode is self-capacitance detected until all the first electrodes are provided through a plurality of sequentially performing fingerprint sensing stages Sensing signal, self-capacitance detection is performed on all first electrodes to implement fingerprint sensing; any adjacent fingerprint sensing stages in a plurality of sequentially performed fingerprint sensing stages constitute a set of adjacent fingerprint sensing stages, and Controlling the display driving unit to provide a display signal to a second electrode located in a different column with the plurality of first electrodes to drive the plurality of first electrodes between at least one set of adjacent fingerprint sensing stages The second electrodes located in different columns implement image display. The driving circuit of claim 18, wherein the control unit is configured to control the display between adjacent fingerprint sensing stages in a set of adjacent two fingerprint sensing stages when performing fingerprint sensing The driving unit provides a display signal to the second electrodes located in different columns with the plurality of first electrodes to drive the second electrodes located in different columns with the plurality of first electrodes to realize image display. The driving circuit of claim 18, wherein the control unit is configured to control the display driving unit to and between the plurality of adjacent fingerprint sensing stages when performing fingerprint sensing A second electrode having an electrode in a different column provides a display signal to drive a second electrode located in a different column from the plurality of first electrodes for image display. The driving circuit of any one of claims 18 to 20, wherein the fingerprint sensing stage defined in the plurality of sequentially performed fingerprint sensing stages is the first fingerprint sensing stage, and the final fingerprint feeling is defined. The measurement phase is a second fingerprint sensing phase; the control unit is further configured to control the display driver before performing fingerprint sensing, before the first fingerprint sensing phase, and/or after the second fingerprint sensing phase The unit provides a display signal to a second electrode that is in a different column than the plurality of first electrodes. The driving circuit of claim 18, wherein the step of providing a display signal to the second electrode when performing fingerprint sensing is a display update phase, wherein the number of display update phases is performed when the driving circuit performs fingerprint sensing The control unit is configured to control the display driving unit to provide a display signal to a portion of the second electrode located in different columns of the plurality of first electrodes in a display update phase, by transmitting the plurality of display update stages The step of providing a display signal at least once is completed by all of the second electrodes in different columns with the plurality of first electrodes. The driving circuit of claim 18, wherein the step of providing a display signal to the second electrode when performing fingerprint sensing is a display update phase, wherein the number of display update phases when the driving circuit performs fingerprint sensing is one or And a plurality of, the control unit is configured to, in each of the display update stages, controlling the display driving unit to provide a display signal to all second electrodes located in different columns with the plurality of first electrodes. The driving circuit of claim 18, wherein the control unit is further configured to simultaneously control the display driving unit when providing a display signal to a second electrode located in a different column from the plurality of first electrodes The display driving unit supplies a display signal to the second electrode in the same column and different rows as the respective first electrodes. The driving circuit of claim 24, wherein the step of providing a display signal to the second electrode when performing fingerprint sensing is a display update phase, wherein the number of display update phases is performed when the driving circuit performs fingerprint sensing The control unit is configured to control the display driving unit to provide a display signal to a portion of the second electrode on the display panel during a display update phase, and complete at least all the second electrodes on the display panel through the plurality of display update stages The step of providing a display signal at a time. The driving circuit of claim 24, wherein the step of providing a display signal to the second electrode when performing fingerprint sensing is a display update phase, wherein the number of display update phases when the driving circuit performs fingerprint sensing is one or And a plurality of the control unit configured to control the display driving unit to provide a display signal to all the second electrodes on the display panel in each of the display update stages. The driving circuit of claim 22, 23, 25 or 26, wherein the number of display update phases is performed when the driving circuit performs fingerprint sensing, and the control unit is configured to control the display driving unit to increase The time to display the update phase is the same or different. The driving circuit of claim 22, 23, 25 or 26, wherein the number of display update phases is performed when the driving circuit performs fingerprint sensing, the control unit is configured to control the display driving unit in each The display update phase provides a display signal to the second electrode that is completely overlapping, partially overlapping, or non-overlapping. The driving circuit of any one of claims 18 to 20, wherein the control unit is configured to control the fingerprint sensing unit to make the times of the plurality of fingerprint sensing phases the same or different. The driving circuit of any one of claims 18 to 20, wherein the control unit is configured to control, in a fingerprint sensing stage, the display driving unit to be in a different column from the plurality of first electrodes The two electrodes provide a display signal while simultaneously controlling the display driving unit to supply a predetermined display signal to the second electrodes in the same row and different rows from the respective first electrodes. The driving circuit of claim 18, wherein the control unit is configured to control the fingerprint sensing unit to provide a fingerprint sensing signal to the first electrode that is partially overlapped or not overlapped in each fingerprint sensing stage, to perform Capacitance detection. The driving circuit of claim 18, wherein the display device further includes a touch sensing unit; the driving circuit further includes: a touch driving circuit, configured to perform touch detection on the touch sensing unit; The step of providing a display signal to the second electrode during the fingerprint sensing is a display update phase, and the control unit is further configured to control the touch driving circuit to the touch between the fingerprint sensing phase and the display update phase The sensing unit is driven to perform touch detection; or, the fingerprint sensing stage defined in the plurality of sequentially performed fingerprint sensing stages is the first fingerprint sensing stage, and the last fingerprint sensing stage is defined as the second fingerprint. During the sensing phase, the control unit is further configured to control the touch driving circuit to drive the touch sensing unit to perform before the first fingerprint sensing phase and/or after the second fingerprint sensing phase Touch detection; or the control unit is further configured to control the touch driving power between at least one set of adjacent fingerprint sensing stages that are not provided with a display update phase The touch sensing unit is driven to perform touch detection. The driving circuit of claim 32, wherein the control unit is configured to control the touch driving circuit to perform one or more touch detections on the touch sensing unit when performing fingerprint sensing. The driving circuit of claim 32, wherein the control unit is configured to control the touch driving circuit to perform multiple touch detection on the touch sensing unit when the fingerprint sensing is performed, and the multiple touch detection The time is the same or different. A display device, the display device comprising: a display panel, the display panel is provided with a plurality of first electrodes located in a predetermined area of the display panel, and a plurality of second electrodes located outside the predetermined area, wherein the An electrode and a second electrode are arranged in an array and used for image display. The first electrode is further used for fingerprint sensing than the second electrode, and the stage for defining the first electrode to perform fingerprint sensing is a fingerprint sensing stage. And a driving circuit, configured to provide a display signal to the plurality of first electrodes and second electrodes to implement image display; and to provide a fingerprint sensing signal to a portion of the first electrodes during a fingerprint sensing phase, Performing self-capacitance detection on the part of the first electrodes until all the first electrodes are provided with fingerprint sensing signals through a plurality of sequentially performing fingerprint sensing stages, and performing self-capacitance detection on all the first electrodes to implement fingerprint sensing; Any adjacent fingerprint sensing phase in a plurality of sequentially performed fingerprint sensing phases constitutes a set of adjacent fingerprint sensing phases, and in at least one set of adjacent fingerprint sensing phases Between the display signal to the second electrode of the plurality of first electrodes provided in different columns, the second electrode driver in different columns of the plurality of first electrodes of the image display. The display device of claim 35, wherein the driving circuit further comprises: a display driving unit configured to provide a display signal to the plurality of display electrodes to implement image display; and a fingerprint sensing unit for The first electrode provides the fingerprint sensing signal, and performs self-capacitance detection on the first electrode to implement fingerprint sensing. The control unit is configured to control the fingerprint sensing unit in a fingerprint sensing stage. Part of the first electrode provides a fingerprint sensing signal, and the part of the first electrode is self-capacitance detected until all of the first electrodes are provided with fingerprint sensing signals through a plurality of sequentially performing fingerprint sensing stages, and all the first electrodes are performed. Self-capacitance detection to implement fingerprint sensing; any adjacent fingerprint sensing stages in a plurality of sequential fingerprint sensing stages form a set of adjacent fingerprint sensing stages, and are used in at least one set of adjacent fingerprint sensing stages Controlling the display driving unit to provide a display signal to a second electrode located in a different column from the plurality of first electrodes to drive the plurality of first electrodes The second column of the electrodes in the same display image. The display device of claim 36, wherein the control unit is configured to control the display between adjacent fingerprint sensing stages in only one set of two adjacent fingerprint sensing stages when performing fingerprint sensing The driving unit provides a display signal to the second electrodes located in different columns with the plurality of first electrodes to drive the second electrodes located in different columns with the plurality of first electrodes to realize image display. The display device of claim 36, wherein the control unit is configured to control the display driving unit to and the plurality of first fingerprint sensing stages when performing fingerprint sensing A second electrode having an electrode in a different column provides a display signal to drive a second electrode located in a different column from the plurality of first electrodes for image display. The display device according to any one of claims 36 to 38, wherein the fingerprint sensing stage defined in the plurality of sequentially performed fingerprint sensing stages is a first fingerprint sensing stage, and the final fingerprint feeling is defined. The measurement phase is a second fingerprint sensing phase; the control unit is configured to, when performing fingerprint sensing, before the first fingerprint sensing phase, and/or after the second fingerprint sensing phase, further to control the The display driving unit supplies a display signal to a second electrode located in a different column from the plurality of first electrodes. The display device of claim 36, wherein the step of providing a display signal to the second electrode when performing fingerprint sensing is a display update phase, wherein the number of display update phases is performed when the driving circuit performs fingerprint sensing The control unit is configured to control the display driving unit to provide a display signal to a portion of the second electrode located in different columns of the plurality of first electrodes in a display update phase, by transmitting the plurality of display update stages The step of providing a display signal at least once is completed by all of the second electrodes in different columns with the plurality of first electrodes. The display device of claim 36, wherein the step of providing a display signal to the second electrode when performing fingerprint sensing is a display update phase, and the number of display update phases is one or And a plurality of, the control unit is configured to, in each of the display update stages, controlling the display driving unit to provide a display signal to all second electrodes located in different columns with the plurality of first electrodes. The display device of claim 36, wherein the control unit is further configured to simultaneously control the display driving unit when providing a display signal to a second electrode located in a different column with the plurality of first electrodes The display driving unit supplies a display signal to the second electrode in the same column and different rows as the respective first electrodes. The display device of claim 42, wherein the step of providing a display signal to the second electrode when performing fingerprint sensing is a display update phase, and the number of display update phases is performed when the driving circuit performs fingerprint sensing The control unit is configured to control the display driving unit to provide a display signal to a portion of the second electrode on the display panel during a display update phase, and complete at least all the second electrodes on the display panel through the plurality of display update stages The step of providing a display signal at a time. The display device of claim 42, wherein the step of providing a display signal to the second electrode when performing fingerprint sensing is a display update phase, and the number of display update phases is one or And a plurality of the control unit configured to control the display driving unit to provide a display signal to all the second electrodes on the display panel in each of the display update stages. The display device of claim 40, 41, 43 or 44, wherein the number of display update phases is performed when the driving circuit performs fingerprint sensing, and the control unit is configured to control the display driving unit to increase The time to display the update phase is the same or different. The display device of claim 40, 41, 43 or 44, wherein the number of display update phases is performed when the drive circuit performs fingerprint sensing, and the control unit is configured to control the display drive unit in each The display update phase provides a display signal to the second electrode that is completely overlapping, partially overlapping, or non-overlapping. The display device of any one of claims 36 to 38, wherein the control unit is configured to control the fingerprint sensing unit to make the times of the plurality of fingerprint sensing phases the same or different. The display device of any one of claims 36 to 38, wherein the control unit is configured to control, in a fingerprint sensing stage, the display driving unit to be in a different column from the plurality of first electrodes The two electrodes provide a display signal while simultaneously controlling the display driving unit to supply a predetermined display signal to the second electrodes in the same row and different rows from the respective first electrodes. The display device of claim 36, wherein the control unit is configured to control the fingerprint sensing unit to provide a fingerprint sensing signal to the first electrode that is partially overlapped or not overlapped in each fingerprint sensing phase to perform Capacitance detection. The display device of claim 36, wherein the display device further includes a touch sensing unit; the driving circuit further includes: a touch driving circuit, configured to perform touch detection on the touch sensing unit; The step of providing a display signal to the second electrode during the fingerprint sensing is a display update phase, and the control unit is further configured to control the touch driving circuit to the touch between the fingerprint sensing phase and the display update phase The sensing unit is driven to perform touch detection; or, the fingerprint sensing stage defined in the plurality of sequentially performed fingerprint sensing stages is the first fingerprint sensing stage, and the last fingerprint sensing stage is defined as the second fingerprint. During the sensing phase, the control unit is further configured to control the touch driving circuit to drive the touch sensing unit to perform before the first fingerprint sensing phase and/or after the second fingerprint sensing phase Touch detection; or the control unit is further configured to control the touch driving power between at least one set of adjacent fingerprint sensing stages that are not provided with a display update phase The touch sensing unit is driven to perform touch detection. The display device of claim 50, wherein the control unit is configured to control the touch driving circuit to perform one or more touch detections on the touch sensing unit when performing fingerprint sensing. The display device of claim 50, wherein the control unit is configured to control the touch driving circuit to perform multiple touch detection on the touch sensing unit when the fingerprint sensing is performed, and the multiple touch detection The time is the same or different. The display device of claim 35, wherein the display panel is a liquid crystal display panel. The display device of claim 35, wherein the display panel is a planar conversion liquid crystal display panel. An electronic device comprising the display device as claimed in any one of claims 35 to 54. The electronic device of claim 55, wherein the electronic device further comprises: a fingerprint sensing instruction unit configured to trigger a fingerprint sensing phase of the display device. The electronic device of claim 56, wherein the electronic device further comprises: a booting device, an application device, a touch detecting device or a fingerprint screen unlocking device, wherein the fingerprint sensing command unit is disposed on the booting device, Any one or more of an application device, a touch detection device, or a fingerprint screen unlock device. The electronic device of claim 55, wherein the electronic device is a mobile phone, a tablet computer, a notebook computer, or a desktop computer.